JP2015068110A - Door check device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door check device configured to be relatively inexpensive and capable of generating a braking force of a vehicle door at an arbitrary opening. When a vehicle door DR is opened and closed when the holding members 5a and 5b are located at the original positions in the case 2 and the rotational position of the release lever 62 is at the neutral rotational position, the resistance of the pair of springs 7a and 7b is achieved. The force acts on the vehicle door DR as a braking force. At this time, since the rotation position of the release lever 62 is restricted to the rotation position in the holding region by the cam members 8a and 8b, the holding members 5a and 5b hold the check rod 3 until the holding members 5a and 5b reach the operating position. . When the holding members 5a and 5b reach the operating position, the release lever 62 is rotated in the direction toward the release region by the biasing force of the return spring 65. As a result, the rotational position of the release lever 62 reaches the release region, and the holding of the check bar 3 by the holding members 5a and 5b is released. [Selection] Figure 2

Description

  The present invention relates to a door check device.

  A door check device mounted on a vehicle generates a resistance force (hereinafter referred to as a braking force) against the opening / closing operation of the vehicle door. For example, when the vehicle door is opened at a predetermined opening on a slope by the door check device, the vehicle door closes unexpectedly, or the vehicle door is further moved from the desired opening by being blown by wind or the like. Opening and closing operations contrary to the intention of the vehicle door, such as opening it to a large extent, can be prevented.

  A general door check device is configured such that a braking force is generated when the vehicle door is opened at a predetermined opening, and no braking force is generated at other openings. For example, the door check device is configured so that the braking force is generated when the opening degree of the vehicle door is 30 ° and 60 °. However, the optimum opening at which the braking force should be generated differs depending on the physique of the occupant and the surrounding environment of the vehicle (for example, the distance between adjacent vehicles). Therefore, there is a need for a door check device that can generate a braking force at an arbitrary opening at which the user stops the opening / closing operation of the vehicle door. Patent Document 1 discloses a door check device that can generate a braking force at an arbitrary opening by using a piezoelectric element.

JP 2012-97482 A

(Problems to be solved by the invention)
According to the door check device described in Patent Document 1, a control device for controlling energization to the piezoelectric element is necessary. Therefore, the control is complicated and the cost is increased. An object of the present invention is to provide a door check device that is configured at a relatively low cost and can generate a braking force of a vehicle door at an arbitrary opening.

(Means for solving the problem)
The present invention has a case attached to either a vehicle body or a vehicle door connected to the vehicle body so as to be openable and closable, and one end of which is swingably connected to either the vehicle body or the vehicle door and is inserted through the case. In addition, a rod-shaped member that moves relative to the case in the axial direction as the vehicle door opens and closes, and a rod-shaped member that is disposed in the case and extends between the original position and the operating position in the case along the axial direction of the rod-shaped member. And a rotatable release lever that moves with the holding member, and the rotational position of the release lever is in the neutral rotational position or in one direction from the neutral rotational position. When the holding member holds the rod-shaped member when it is in the holding area that is the rotated rotation area, and the rotation position of the release lever is in the release area that is the area rotated in the other direction from the neutral rotation position A release member configured to release the holding of the rod-shaped member by the holding member in accordance with the rotational position of the release lever so that the holding member releases the holding of the rod-shaped member, and when the holding member moves from the original position, A braking force applying member that applies a resistance force against movement to the holding member and applies a restoring force to the holding member in a direction to return the holding member to the original position when the holding member is in the operating position, and a release provided on the case. The cam member is in contact with the lever. When the holding member is in the original position, the rotation position of the release lever is restricted to the neutral rotation position, and when the holding member moves from the original position toward the operating position, the release lever The rotational position is restricted to the rotational position in the holding region, and the rotational position of the release lever is restricted to the rotational position in the release region when the holding member moves from the operating position toward the original position. The release lever is released from the neutral rotation position and the cam member that regulates the rotation position of the release lever so that the rotation position of the release lever rotates from the rotation position in the release area to the neutral rotation position when reaches the original position. And a biasing member that biases the rotation in a direction toward the region.

  In this case, the cam member may be configured such that the restriction of the rotational position of the release lever is released when the holding member reaches the operating position.

  According to the present invention, the holding member holds the rod-shaped member when the holding member is located at the original position in the case and the rotation position of the release lever is at the neutral rotation position. When the vehicle door is opened and closed at this time, the rod-shaped member moves in the axial direction in conjunction with the opening and closing operation, and the holding member holding the rod-shaped member operates from the original position in the case as the rod-shaped member moves in the axial direction. Move to position. When the holding member moves from the original position to the operating position, the holding member is biased in a direction to return to the original position by the resistance force of the braking force applying member. Such a resistance force acts on the vehicle door as a braking force.

  Further, when the holding member moves from the original position toward the operating position, the rotation position of the release lever is regulated by the cam member to the rotating position in the holding area, so that the holding member does not move until the holding member reaches the operating position. Maintain the holding of the rod-shaped member. When the holding member reaches the operating position, the restriction of the rotation position of the release lever by the cam member is released, and the release lever is rotated in the direction toward the release region by the urging force of the urging member. As a result, the rotational position of the release lever reaches the release region, and the holding of the rod-like member by the holding member is released. After the holding member reaches the operating position, the holding member is returned from the operating position to the original position by the restoring force from the braking force applying member. When the holding member moves from the operating position toward the original position, the rotation position of the release lever is regulated by the cam member to the rotation position in the release region, so that the rod-like member by the holding member until the holding member reaches the original position. The release of holding is maintained. When the holding is released, the force from the braking force applying member acting on the holding member does not act on the rod-shaped member. That is, when the rotation position of the release lever is in the release region, no braking force is generated on the rod-like member and the vehicle door. For this reason, a vehicle door can be opened and closed smoothly.

  When the holding member reaches the original position from the operating position, the release lever is rotated from the rotation position in the release region to the neutral rotation position by the cam member. Thereby, a holding member hold | maintains a rod-shaped member again.

  As described above, according to the door check device of the present invention, the release lever is rotated in conjunction with the opening / closing operation of the vehicle door, so that the holding member releases the holding of the rod-like member. When the opening and closing of the vehicle door is stopped at an arbitrary opening degree, the release position of the release lever is returned to the neutral rotation position so that the holding member holds the rod-like member and generates a braking force. Can be made. Further, since the braking force can be generated at an arbitrary opening degree by the mechanical rotation operation of the release lever, a control device or the like is not required, and complicated control is not required. Therefore, it is possible to provide a door check device that is configured at a relatively low cost and can generate a braking force at an arbitrary opening.

  Further, when the holding member returns from the operating position to the original position, the release lever is rotated from the release position to the neutral rotation position by the cam member. At this time, the urging force of the urging member moves the release lever toward the release region. Energize. Therefore, the urging force of the urging member acts on the release lever as a reaction force against rotation toward the neutral rotation position of the release lever. This reaction force increases the time required for the release lever to return to the neutral rotational position. In other words, the timing at which the holding member shifts from the state in which the holding of the rod-like member is released to the state in which the holding member holds the rod-like member, in other words, the state in which the braking force is not applied to the vehicle door. The transition timing is delayed. Therefore, the time during which the holding member releases the holding of the rod-shaped member (holding release time) is increased. As a result, it is possible to prevent the opening / closing operation of the vehicle door from being hindered by the release lever returning to the neutral rotation position during the opening / closing operation of the vehicle door and suddenly generating braking force.

  Further, according to the present invention, when the opening / closing operation of the vehicle door is started, the release lever rotates from the neutral position to the rotation position in the holding area and is restricted to the rotation position in the holding area. That is, at the start of the opening / closing operation of the vehicle door, the release lever rotates in a direction opposite to the direction in which the holding of the rod-like member by the holding member is released. Therefore, when an external force is applied to the vehicle door when the opening / closing operation of the vehicle door is stopped, it is possible to reliably avoid a problem that the release lever is operated toward the release region and the holding of the rod-like member by the holding member is released. it can. As a result, the braking force can be reliably applied to the vehicle door.

It is the schematic which shows the attachment state to the vehicle of the door check apparatus which concerns on embodiment. It is a partial section schematic diagram of a door check device concerning an embodiment. It is the schematic which shows the connection state of a rotating cam and a cancellation | release lever. It is a partial section schematic diagram showing an example of a holding member concerning this embodiment. It is a fragmentary sectional schematic diagram which shows the arrangement | positioning relationship between a cancellation | release member and a holding member in case the rotation position of a cancellation | release lever exists in a holding | maintenance area. It is a fragmentary sectional schematic diagram which shows the arrangement | positioning relationship between a cancellation | release member and a holding member in case the rotation position of a cancellation | release lever exists in a cancellation | release area | region. It is a figure which shows the structure of the upper half of a cancellation | release lever. It is a figure which shows a 1st cam member. It is a partial section schematic diagram of a door check device in an initial state. It is the partial cross section schematic of a door check apparatus when the 1st roller is moving on the 1st inclined surface. It is a partial section schematic diagram of a door check device when the 1st roller is moving on the 1st level surface. It is a partial section schematic diagram of door check device 1 when the 1st roller reaches the advance end of the 1st horizontal surface. It is a partial section schematic diagram of a door check device when the 1st roller contacted the 2nd inclined surface. It is a partial section schematic diagram of a door check device when the 1st roller is moving on the 2nd level surface. It is a partial section schematic diagram of a door check device when the 2nd roller contacted the 4th inclined surface. It is a partial section schematic diagram of a door check device when the 2nd roller is moving on the 4th inclined surface. It is a graph which shows the relationship between the opening degree of a vehicle door and braking force when the vehicle door is opened at a constant speed from the fully closed state using the door check device according to the present embodiment.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a schematic view showing an attachment state of a door check device 1 according to the present embodiment to a vehicle. A vehicle V shown in FIG. 1 includes a vehicle body B and a vehicle door DR. A boarding opening OP is formed in a side portion of the vehicle body B. A pair of door hinges H, H are attached to the edge FE on the vehicle front side of the opening OP along the vertical direction. The vehicle door DR is connected to the vehicle body B through a pair of door hinges H, H so as to be swingable (openable and closable). That is, the vehicle door DR can open and close the opening OP formed in the vehicle body B. The door check device 1 according to the present embodiment is attached in the vehicle door DR.

  FIG. 2 is a partial cross-sectional schematic view of the door check device 1 according to the present embodiment. In FIG. 2 and FIGS. 9A to 9H to be described later, hidden portions are also shown to make the structure easy to understand. As shown in FIG. 2, the door check device 1 includes a case 2, a check bar (bar-shaped member) 3, an inner case 4, a pair of holding members 5 a and 5 b, a release member 6, a return spring 65 (biasing member), a pair Springs (braking force applying members) 7a, 7b, and a pair of cam members (first cam member 8a, second cam member 8b). 2 and later-described FIGS. 9A to 9H are schematic partial cross-sectional views of the door check device 1 when the door check device 1 is cut along a plane parallel to the axis of the check rod 3. FIG.

  Case 2 is attached to vehicle door DR. Specifically, the case 2 is disposed in the internal space of the door panel that constitutes the vehicle door DR. The case 2 has a hollow rectangular parallelepiped shape, and is attached to the vehicle door DR so that the longitudinal direction coincides with the front-rear direction (horizontal direction) of the vehicle door DR. As shown in FIG. 1, the check rod 3 is configured such that one end thereof is swingably attached to an edge FE on the vehicle front side of the opening OP of the vehicle body B. The check rod 3 having one end attached to the vehicle body B extends into the vehicle door DR (in the door panel), and the extended portion is inserted into the case 2. The swing axis direction of the check bar 3 is the same direction as the swing axis direction of the pair of door hinges H, that is, the vertical direction. Therefore, the check bar 3 swings according to the opening / closing of the vehicle door DR.

  Since the vehicle door DR is rotationally displaced with respect to the vehicle body B when the vehicle door DR is opened and closed, the relative positional relationship between the check rod 3 having one end connected to the vehicle body B side and the case 2 attached to the vehicle door DR side is also Change. That is, when the vehicle door DR is opened and closed, the check rod 3 moves in the axial direction relative to the case 2 along the longitudinal direction of the case 2 while swinging. The case 2 may be attached to the vehicle body B side. In this case, one end side of the check rod 3 is swingably attached to the vehicle door DR side.

  Since the swing center axis position of the vehicle door DR (rotation center axis position of the hinge H) and the swing center axis position of the check rod 3 are different, the check rod 3 swings as the vehicle door DR opens and closes. The angle formed by the opening direction of the vehicle door DR and the axial direction of the check bar 3 as viewed from above the vehicle changes. In order to allow the check rod 3 to move in the axial direction relative to the case 2 while allowing this angle change, the case 2 is preferably attached to the vehicle door DR so as to be swingable. .

  As shown in FIG. 2, the inner case 4, the pair of holding members 5 a and 5 b, the release member 6, the return spring 65 and the pair of springs (first spring 7 a and second spring 7 b) are accommodated in the case 2. . The check bar 3 penetrates the case 2 in the longitudinal direction. The check bar 3 is also inserted into the inner case 4 in the case 2. In the inner case 4, a pair of holding members 5a and 5b are disposed. The pair of holding members 5a and 5b are arranged along the longitudinal direction of the check bar 3 in the inner case 4 so as to face each other. The pair of holding members 5a and 5b are arranged so as to be in contact with opposing side wall surfaces (inner surfaces of the left and right side walls in FIG. 2) of the inner case 4, respectively. The release member 6 is disposed between the pair of holding members 5a and 5b when viewed from a direction perpendicular to the paper surface of FIG. The inner case 4 is movable in the case 2 along the axial direction of the check bar 3. Therefore, the pair of holding members 5 a and 5 b and the release member 6 in the inner case 4 can also move in the case 2 along the axial direction of the check bar 3.

  The check bar 3 is also inserted into the pair of holding members 5 a and 5 b in the inner case 4. The pair of holding members 5a and 5b are configured to be able to hold the check bar 3 and to release the holding. Therefore, when the pair of holding members 5a and 5b are holding the check rod 3, that is, in the holding state, the check rod 3 operates integrally with the pair of holding members 5a and 5b. On the other hand, when the holding of the check bar 3 by the pair of holding members 5a and 5b is released, that is, in the released state, the check bar 3 is independent of the pair of holding members 5a and 5b (that is, separately). Operate.

  The release member 6 includes a rotating cam 61 and a release lever 62. The release lever 62 is rotatably connected to the inner case 4 at a central portion in the longitudinal direction. Therefore, the release lever 62 can rotate in a plane parallel to the paper surface of FIG. Further, the rotating cam 61 is connected to the central portion of the release lever 62 in the longitudinal direction. The rotating cam 61 is provided between the pair of holding members 5a and 5b, and is arranged to be able to contact the holding members 5a and 5b.

  FIG. 3 is a schematic view showing a connection state between the rotating cam 61 and the release lever 62. In FIG. 3, the release lever 62 is indicated by a solid line, and the rotary cam 61 is indicated by a dotted line. As shown in FIG. 3, the rotary cam 61 is rotatably connected to the release lever 62 at the rotation center position O of the release lever 62. The rotating cam 61 is formed in a rectangular shape having a short side and a long side when viewed from a direction perpendicular to the paper surface of FIG. Further, the release lever 62 is formed with a rectangular parallelepiped protrusion 62a protruding toward the rotary cam 61, while the concave portion 61a is formed on the surface of the rotary cam 61 facing the release lever 62. The protrusion 62a is fitted into the recess 61a.

  When the release lever 62 rotates counterclockwise from the rotational position shown in FIG. 3, the protrusion 62 a idles in the concave portion 61 a, and the release lever 62 rotates clockwise from the rotational position shown in FIG. 3. When rotated, the protrusion 62a has a shape that engages with the wall surface forming the recess 61a. Therefore, even if the release lever 62 rotates counterclockwise from the rotation position shown in FIG. 3, the rotary cam 61 does not engage with the release lever 62, so the rotary cam 61 does not rotate. On the other hand, when the release lever 62 rotates in the clockwise direction from the rotation position shown in FIG. 3, the rotary cam 61 engages with the release lever 62, so the rotary cam 61 rotates in conjunction with the rotation of the release lever 62. To do. The rotation position of the release lever 62 as shown in FIG. 3 is referred to as a “neutral rotation position”. A rotation region in which the release lever 62 rotates counterclockwise from the neutral rotation position is referred to as a “holding region”, and rotation in which the release lever 62 rotates clockwise from the neutral rotation position. The area is called a “release area”. The rotation position of the release lever 62 shown in FIG. 2 is a neutral rotation position.

  Therefore, even if the release lever 62 rotates counterclockwise in FIG. 2 from the neutral rotation position shown in FIG. 2, the rotating cam 61 does not rotate. That is, when the rotation position of the release lever 62 rotates from the neutral rotation position to the rotation position in the holding region, the rotation cam 61 does not rotate. On the other hand, when the release lever 62 rotates clockwise from the neutral rotation position shown in FIG. 2, the rotating cam 61 rotates together with the release lever 62. That is, when the rotation position of the release lever 62 rotates from the neutral rotation position to the rotation position in the release region, the rotary cam 61 rotates. When the rotating cam 61 rotates from the position shown in FIG. 2, the contact surface (contact state) between the rotating cam 61 and the pair of holding members 5a, 5b changes, and the diagonal portion of the rotating cam 61 is changed to the pair of holding members 5a, Press 5b. The holding members 5a and 5b of the present embodiment have a holding state in which the check rod 3 is held by a pressing operation of the rotating cam 61 resulting from the rotation of the rotating cam 61 and a released state in which the holding of the check rod 3 is released. Configured to take.

FIG. 4 is a partial cross-sectional schematic view showing an example of the holding member according to the present embodiment. Each of the pair of holding members 5 a and 5 b shown in FIG. 4 includes a main body 51, a retainer 52, a plurality of balls 53, and an internal spring 54. A rotating cam 61 is disposed between the pair of holding members 5a and 5b.

  The main body 51 is formed in a ring shape so as to cover the outer periphery of the check bar 3. A tapered surface 51 a is formed on the inner peripheral side of the main body 51 near the one end surface 511 so that the diameter decreases as the end surface 511 is approached. Further, a flange portion 51b extending inwardly from the other end surface 512 of the main body 51 is formed.

  A retainer 52, a plurality of balls 53, and an internal spring 54 are disposed between the inner peripheral surface of the main body 51 and the outer peripheral surface of the check bar 3. The retainer 52 is formed in a ring shape so as to cover the outer periphery of the check bar 3. A plurality of holes (not shown) are formed in the retainer 52 along the circumferential direction, and a plurality of balls 53 are held in the hole along the circumferential direction. The plurality of balls 53 are in contact with the outer peripheral surface of the check bar 3 while being held in the holes of the retainer 52. As the plurality of balls 53 slide (or roll) on the outer peripheral surface of the check bar 3, the retainer 52 can move along the axial direction of the check bar 3.

  The internal spring 54 is disposed between the flange portion 51 b of the main body 51 and the retainer 52. The internal spring 54 covers the outer periphery of the check bar 3 so as to be attached to the retainer 52, and one end thereof is locked to the side surface of the retainer 52, and the other end is locked to the flange portion 51 b of the main body 51. The internal spring 54 is configured to always generate an extension force in a state where both ends thereof are locked. Therefore, the retainer 52 is biased toward the one end surface 511 side of the main body 51 by the extension force of the internal spring 54. As described above, since the tapered surface 51 a is formed on the inner periphery of the main body 51 near the one end surface 511, the plurality of balls 53 held by the retainer 52 are pressed against the tapered surface 51 a by the extension force of the internal spring 54. . A reaction force against the pressing force is transmitted from the tapered surface 51 a to the plurality of balls 53, and further transmitted from the plurality of balls 53 to the check bar 3. That is, the check bar 3 is fastened to the holding members 5a and 5b by the holding force resulting from the extension force of the internal spring 54. In this way, the holding members 5a and 5b hold the check bar 3. FIG. 4 shows a state (holding state) in which the check bar 3 is held by the holding members 5a and 5b.

  As shown in FIG. 4, the pair of holding members 5 a and 5 b are arranged on the inner side so that the one end surfaces 511 of the main bodies 51 of the pair of holding members 5 a and 5 b face each other and the rotating cam 61 is sandwiched between the retainers 52. It is arranged in the case 4 so as to face each other. In the holding state shown in FIG. 4, the rotation position of the release lever 62 is the neutral rotation position. When the rotation position of the release lever 62 is the neutral rotation position, the short side of the rotation cam 61 coincides with the axial direction of the check bar 3. At this time, the retainer 52 is not pressed by the rotating cam 61. Therefore, in the state shown in FIG. 4, the holding state of the pair of holding members 5a and 5b is maintained.

  When the release lever 62 rotates counterclockwise from the neutral rotation position shown in FIG. 4, the rotation position of the release lever 62 is located in the holding region. When the rotation position of the release lever 62 is located within the holding area, the rotating cam 61 does not rotate as described above. Therefore, when the rotation position of the release lever 62 is in the holding region, the holding members 5a and 5b maintain the holding state. FIG. 5 shows an arrangement relationship between the release member 6 and the holding members 5a and 5b when the rotation position of the release lever 62 is within the holding region.

  On the other hand, when the release lever 62 rotates clockwise from the neutral rotation position shown in FIG. 4, the rotation position of the release lever 62 is located in the release region. When the release lever 62 rotates from the neutral rotation position to the rotation position in the release region, the rotary cam 61 also rotates as described above. When the rotating cam 61 rotates, the contact surface of the rotating cam 61 with respect to the retainers 52 and 52 changes. For this reason, a pressing force is applied to the retainers 52, 52 from the rotary cam 61, and the retainers 52, 52 move along the axial direction of the check bar 3 so as to be separated from each other. The plurality of balls 53 arranged on the retainer 52 are separated from the tapered surface 51 a of the main body 51 by such movement of the retainers 52, 52 in the direction away from each other. Therefore, the extension force of the internal spring 54 acting on the check bar 3 via the ball 53 and the main body 51 is prevented from being transmitted to the check bar 3. As a result, the holding of the check bar 3 by the holding members 5a and 5b is released. FIG. 6 shows an arrangement relationship between the release member 6 and the holding members 5a and 5b when the rotation position of the release lever 62 is within the release region.

  As is clear from the above example, the holding members 5a and 5b used in the present embodiment can be switched between the holding state and the releasing state depending on the operation of the releasing member 6, specifically, the rotational position of the releasing lever 62. Configured as follows. In other words, in the release member 6, the holding members 5 a and 5 b hold the check bar 3 when the release position of the release lever 62 is in the neutral rotation position or the holding area that is a rotation area rotated in one direction from the neutral rotation position. Then, the rotation position of the release lever 62 is set so that the holding members 5a and 5b release the holding of the check rod 3 when the release position of the release lever 62 is in the release area that is an area rotated in the other direction from the neutral rotation position. Accordingly, the holding of the check bar 3 by the holding members 5a and 5b is released.

  As shown in FIG. 2, a pair of partition plates (a first partition plate 9 a and a second partition plate 9 b) are provided in the case 2. The pair of partition plates 9 a and 9 b are arranged in the case 2 so as to sandwich the inner case 4 in the case 2 from both sides along the axial direction of the check bar 3. A through hole is formed in the pair of partition plates 9a and 9b, and the check bar 3 is inserted through the through hole. The pair of partition plates 9 a and 9 b are configured to be movable in the axial direction of the check bar 3 in the case 2.

  A pair of springs 7 a and 7 b are disposed in the case 2 so as to face each other with the inner case 4 sandwiched along the axial direction of the check bar 3. Of the pair of springs 7a and 7b, one end of the first spring 7a on the right side in FIG. 2 is locked to the inner surface of the side wall forming the right end surface of the case 2, and the other end is locked to the right surface of the first partition plate 9a. Is done. Of the pair of springs 7a and 7b, one end of the second spring 7b on the left side in FIG. 2 is locked to the inner surface of the side wall forming the left end surface of the case 2, and the other end is locked to the left surface of the second partition plate 9b. Is done. Each spring 7a, 7b is configured to generate an extension force with both ends locked. Accordingly, the first partition plate 9a is urged in the direction approaching the inner case 4 by the first spring 7a, and the second partition plate 9b is urged in the direction approaching the inner case 4 by the second spring 7b.

  Further, as shown in FIG. 2, the first cam member 8a is attached to the upper inner wall surface of the case 2, and the second cam member 8b is attached to the lower inner wall surface. The first cam member 8 a and the second cam member 8 b are attached to the case 2 over the entire area in the longitudinal direction of the case 2. The first cam member 8a and the second cam member 8b are arranged so as to face each other in the vertical direction, and the elements described above (the inner case 4, the holding members 5a and 5b, the release member 6, the pair of springs) are disposed between the first cam member 8a and the second cam member 8b. 7a, 7b) are arranged. A pair of stoppers (first stopper 21 and second stopper 22) are formed on the first cam member 8a and the second cam member 8b. The pair of stoppers 21 and 22 are provided at predetermined intervals along the longitudinal direction of the case 2. The first partition plate 9 a can contact the first stopper 21, and the second partition plate 9 b can contact the second stopper 22.

  When the first partition plate 9a biased by the first spring 7a contacts the first stopper 21, the leftward movement of the first partition plate 9a is restricted in FIG. Similarly, when the second partition plate 9b urged by the second spring 7b contacts the second stopper 22, movement of the second partition plate 9b to the right in FIG. 2 is restricted. The distance between the pair of stoppers 21 and 22 is substantially equal to the lateral length of the inner case 4. Therefore, when the position of the pair of partition plates 9a and 9b is restricted by the pair of stoppers 21 and 22, the inner case 4 is positioned between the pair of partition plates 9a and 9b. The position of the holding members 5a and 5b when the inner case 4 is positioned between the pair of partition plates 9a and 9b whose positions are restricted, that is, the positions of the holding members 5a and 5b shown in FIG. Call it. In addition, although both the side walls of the inner case 4 and the pair of partition plates 9a and 9b are in contact with each other in the original position, the inner case 4 may be configured to form a minute gap.

  Further, as shown in FIG. 2, a return spring 65 is disposed in the case 2. One end of the return spring 65 is fixed to the release lever 62, and the other end is fixed to the outer wall of the inner case 4. The return spring 65 always generates a contraction force with its both ends fixed to the release lever 62 and the inner case 4. In the example shown in FIG. 2, one end of the return spring 65 is fixed above the center portion (rotation center) in the longitudinal direction of the release lever 62, and the other end of the return spring 65 is the return spring in FIG. 2. It is fixed to a portion located on the right side of one end of 65. By fixing both ends of the return spring 65 in this way, the upper portion of the release lever 62 is pulled rightward by the contraction force of the return spring 65. Therefore, the release lever 62 is urged clockwise in FIG. 2, that is, in the direction from the neutral rotation position toward the release region. In other words, the return spring 65 urges the release lever 62 to rotate in the direction from the neutral rotation position toward the release region.

  The release lever 62 is formed to extend in one and the other from the rotation center position. A first roller 621 is provided at one end (upper end in FIG. 2) of the release lever 62, and a second roller 622 is provided at the other end (lower end in FIG. 2) of the release lever 62. 7A and 7B are diagrams showing the configuration of the upper half of the release lever 62, in which FIG. 7A is a perspective view and FIG. 7B is an exploded perspective view. The configuration of the lower half of the release lever 62 is the same as the configuration of the upper half except that the first roller 621 is replaced with the second roller 622, and thus the description thereof is omitted.

  As shown in FIG. 7, the release lever 62 includes a first roller 621 (second roller 622), a lever portion 623, a rod 624, and a spring 625. A through hole 623a is formed at the end of the lever portion 623, and the rod 624 is inserted into the through hole 623a. A head portion 624a having a diameter larger than the diameter of the through hole 623a is formed at the base end of the rod 624. When the rod 624 is inserted into the through hole 623a, the head portion 624a is formed on the side surface of the lever portion 623. Locked. The first roller 621 is attached to a rod 624 inserted through the through hole 623a. The first roller 621 is attached to the rod 624 so as to be rotatable and movable in the axial direction of the rod 624. The spring 625 is disposed around the rod 624 inserted through the through hole 623 a, and one end thereof is locked to the side surface of the lever portion 623, and the other end is locked to the end surface of the first roller 621. Accordingly, the first roller 621 is biased in the direction away from the lever portion 623 by the elastic force (extension force) of the spring 625. Note that a stopper (not shown) for preventing the first roller 621 from falling off from the tip of the rod 624 may be formed at the tip of the rod 624.

  As described above, the first cam member 8 a is attached to the upper inner wall surface of the case 2, and the second cam member 8 b is attached to the lower inner wall surface of the case 2. 8A and 8B are views showing the first cam member 8a. FIG. 8A is a front view, FIG. 8B is a bottom view, and FIG. 8C is a perspective view. In FIG. 2 and FIGS. 9A to 9H described later, the first cam member 8a viewed from the front direction is shown. Since the structure of the second cam member 8b is the same as that of the first cam member 8a, the description thereof is omitted.

  In the following description of the first cam member 8a, the vertical direction in the front view of FIG. 8A is defined as the vertical direction of the first cam member 8a, and the horizontal direction is defined as the longitudinal direction of the first cam member 8a. Define. Further, the vertical direction in the bottom view of FIG. 8B is defined as the thickness direction of the first cam member 8a. Further, the left side in the front view of FIG. 8A is defined as the front side of the first cam member 8a, and the right side is defined as the rear side of the first cam member 8a. Furthermore, the upper side in the bottom view of FIG. 8B is defined as the inner side of the first cam member 8a, and the lower side is defined as the outer side of the first cam member 8a.

  As shown in FIG. 8, the first cam member 8a includes a reference plane S1, a first inclined plane S2, a first horizontal plane S3, a second inclined plane S4, a second horizontal plane S5, a third inclined plane S6, and a third horizontal plane. S7, 4th inclined surface S8, level | step difference surface S9, end surface S10, 1st vertical surface S11, 2nd vertical surface S12, and 5th inclined surface S13 are formed.

  The reference surface S1 is a surface with which the first roller 621 (second roller 622) abuts when the release lever 62 is in the neutral rotation position. The reference plane S1 is perpendicular to the vertical direction. The first inclined surface S2 and the third inclined surface S6 are connected to the front end of the reference surface S1. As shown in FIG. 8C, the first inclined surface S2 is connected to the outer side of the front end of the reference surface S1, and the third inclined surface S6 is connected to the inner side of the front end of the reference surface S1. The Accordingly, the first inclined surface S2 and the third inclined surface S6 are arranged in parallel along the thickness direction. The first inclined surface S2 is parallel to the thickness direction and is formed to be inclined downward as it goes forward. The third inclined surface S6 is parallel to the thickness direction and is formed to incline upward as it goes forward.

  The first horizontal plane S3 is connected to the front end of the first inclined plane S2, and the second horizontal plane S5 is connected to the front end of the third inclined plane S6. Both the first horizontal plane S3 and the second horizontal plane S5 are perpendicular to the vertical direction. As can be seen from FIG. 8A, the vertical position of the first horizontal plane S3 is lower than the vertical position of the second horizontal plane S5.

  A step surface S9 is formed upward from the front end of the first horizontal plane S3. The second inclined surface S4 is connected to the front end of the second horizontal plane S5. The second inclined surface S4 is parallel to the thickness direction, and is formed so as to be inclined downward as it goes forward as in the first inclined surface S2.

  An end surface S10 is formed at the front end of the second inclined surface S4. The lower end surface S10 is perpendicular to the vertical direction. The vertical positions of the lower end surface S10 and the first horizontal plane S3 are the same. A space is formed between the front end of the first horizontal plane S3 and the rear end of the lower end surface S10.

  The fourth inclined surface S8 is connected to the rear end of the reference surface S1. The fourth inclined surface S8 is parallel to the thickness direction and is formed to be inclined upward as it goes rearward. A downwardly protruding projection P is formed on the first cam member 8a by the fourth inclined surface S8, the reference surface S1 in front of the fourth inclined surface S8, and the third inclined surface in front of the fourth inclined surface S8. The third horizontal plane S7 is connected to the rear end of the fourth inclined surface S8. The third horizontal plane S7 is perpendicular to the vertical direction.

  The inner end in the thickness direction of the first inclined surface S2 is chamfered. The first vertical surface S11 is connected to the inner end in the thickness direction of the first inclined surface S2 through the chamfered portion. Further, the second vertical surface S12 is connected to the inner end in the thickness direction of the first horizontal surface S3. The first vertical surface S11 and the second vertical surface S12 are formed on the same plane, and these surfaces are perpendicular to the thickness direction. Further, a fifth inclined surface S13 is formed above the second vertical surface S12. The fifth inclined surface S13 is a surface parallel to the vertical direction, and is formed to be inclined outward in the thickness direction toward the front. The front end position of the fifth inclined surface S13 coincides with the front end position of the first horizontal plane S3.

  The first cam member 8 a having the above configuration is attached to the upper inner wall surface of the case 2, and the second cam member 8 b having the same shape as the first cam member 8 a is attached to the lower inner wall surface of the case 2. In this case, as shown in FIG. 2, the first cam member 8a and the second cam member 8b are point-symmetric with respect to the center point in FIG. 2 of the case 2, that is, the holding members 5a and 5b are in their original positions. The cam members 8a and 8b are attached to the case 2 so as to be point-symmetric with respect to the rotation center position of the release lever 62.

  As shown in FIG. 2, the first roller 621 provided at one end of the release lever 62 (lever portion 623) can contact the first cam member 8 a and is provided at the other end of the release lever 62. The arrangement relationship between the release lever 62 and the cam members 8a and 8b is determined so that the second cam member 8b can come into contact with the second roller 622. At this time, the first roller 621 and the second roller 622 of the release lever 62 are urged outward in the thickness direction with respect to the cam members 8a and 8b by the urging force of the spring 625.

  Next, the operation of the door check device 1 according to this embodiment will be described. When the vehicle door DR is opened, the check bar 3 moves relative to the case 2 in one axial direction. When the vehicle door DR is closed, the check bar 3 moves relative to the case 2 in the other axial direction with the closing operation of the vehicle door DR. The relative movement direction of the check rod 3 when the vehicle door DR is opened is opposite to the relative movement direction of the check rod 3 when the vehicle door DR is closed. In the present embodiment, the relative movement direction of the check rod 3 when the vehicle door DR is opened is the direction of arrow A (rightward) in FIG. 2, and the relative movement of the check rod 3 when the vehicle door DR is closed. The direction is an arrow B direction (left direction) in FIG.

(initial state)
FIG. 9A is a partial cross-sectional schematic view of the door check device 1 when the opening / closing operation of the vehicle door DR is stopped. FIG. 9A is the same diagram as FIG. In FIG. 9A, the first partition plate 9 a is urged by the extension force of the first spring 7 a and is in contact with the first stopper 21. Therefore, the position of the first partition plate 9 a is restricted by the first stopper 21. Further, the second partition plate 9 b is urged by the extension force of the second spring 7 b and is in contact with the second stopper 22. Therefore, the position of the second partition plate 9 b is regulated by the second stopper 22. The inner case 4 is disposed between the pair of partition plates 9a and 9b whose positions are restricted. Therefore, the pair of holding members 5a and 5b in the inner case 4 is located at the original position.

  Further, the first roller 621 of the release lever 62 contacts the reference surface S1 of the first cam member 8a, and the second roller 622 contacts the reference surface S1 of the second cam member 8b. At this time, since the release lever 62 is urged clockwise by the return spring 65, such urging force acts as a vertical drag at the contact points between the rollers 621 and 622 and the reference surfaces S1 and S1. Therefore, both rollers 621 and 622 are engaged with both reference surfaces S1 and S1, and the rotation position of the release lever 62 is restricted to the neutral rotation position shown in FIG. 9A. The operation state of the door check device 1 when the holding members 5a and 5b are in the original positions and the rotation position of the release lever 62 is in the neutral rotation position, that is, the state shown in FIG. 9A is referred to as an initial state.

  In the initial state, since the rotation position of the release lever 62 is in the neutral rotation position, the rotation cam 61 does not press the internal elements of the holding members 5a and 5b. Therefore, the holding members 5a and 5b hold the check bar 3. That is, when the operation state of the door check device 1 is the initial state, the holding members 5a and 5b are in the holding state.

(Initial motion)
When the vehicle door DR is opened when the operation state of the door check device 1 is the initial state shown in FIG. 9A, the check rod 3 is pivoted relative to the case 2 as the vehicle door DR is opened. Move direction. At this time, the check bar 3 moves in the axial direction in the right direction indicated by the arrow A1 in FIG. 9A (hereinafter, movement in the right direction may be referred to as forward movement). When the vehicle door DR is closed, the check bar 3 moves in the left direction indicated by the arrow B1 in FIG. 9A (hereinafter, the movement in the left direction may be referred to as backward movement).

  Since the check rod 3 is held by the holding members 5a and 5b in the initial state as described above, when the vehicle door DR is opened in the initial state, the holding members 5a and 5b are connected to the case together with the check rod 3. Move forward in 2. As the holding members 5a and 5b move forward, the inner case 4 housing the holding members 5a and 5b and the release lever 62 connected to the inner case 4 also move forward together with the holding members 5a and 5b.

  In the initial state, the first roller 621 and the second roller 622 of the release lever 62 are in contact with the reference surface S1 of each cam member 8a, 8b. When the release lever 62 moves forward from such an initial state, the first roller 621 also moves forward, so the first roller 621 moves from a position on the reference surface S1 to a position on the first inclined surface S2 in front of it. To do. The first roller 621 moves in the forward direction on the first inclined surface S2. Here, the first inclined surface S2 and the third inclined surface S6 are connected to the front end of the reference surface S1, and the first inclined surface S2 is provided on the outer side in the thickness direction than the third inclined surface S6. It has been. Since the first roller 621 is biased outward in the thickness direction with respect to the first cam member 8a by the biasing force of the spring 625, the first roller 621 has moved forward from the position on the reference plane S1. In this case, the first roller 621 rides on the first inclined surface S2 formed on the outer side in the thickness direction with respect to the third inclined surface S6 and moves on the first inclined surface S2. FIG. 9B is a schematic partial cross-sectional view of the door check device 1 when the first roller 621 is moving on the first inclined surface S2.

  Since the first inclined surface S2 is inclined downward in the forward direction (the right direction in FIG. 9B), the first roller 621 contacts the first inclined surface S2 as the release lever 62 moves forward. The height position of the vertical direction of the portion is lower. Therefore, as the first roller 621 moves forward on the first inclined surface S2, the release lever 62 rotates counterclockwise in FIG. 9B from the neutral rotation position so that the vertical position of the upper end thereof becomes lower. .

  In FIG. 9B and later-described FIGS. 9C to 9H, the inclination direction of the release lever 62 when the release lever 62 is in the neutral rotation position is indicated by a one-dot chain line. As shown in FIG. 9B, when the release lever 62 rotates counterclockwise from the neutral rotation position, the rotation position of the release lever 62 is located in the holding region. When the release lever 62 rotates in the direction (counterclockwise direction) from the neutral rotation position toward the rotation position in the holding region, the rotation cam 61 does not rotate. Therefore, the holding members 5a and 5b maintain the state where the check rod 3 is held.

  When the operation state of the door check device 1 is the state shown in FIG. 9B, when the vehicle door DR is further opened, the check bar 3 further moves forward with respect to the case 2, and the inner case 4 and the holding member 5a. , 5b and the release member 6 are further moved forward. Then, as the release lever 62 moves forward, the first roller 621 moves further forward on the first inclined surface S2, and eventually moves to a position on the first horizontal plane S3. Then, the first roller 621 moves in the forward direction on the first horizontal plane S3. FIG. 9C is a partial cross-sectional schematic view of the door check device 1 when the first roller 621 is moving on the first horizontal plane S3.

  As shown in FIG. 9C, since the vertical position of the first horizontal plane S3 is equal to the lower end position of the first inclined plane S2, the rotation of the release lever 62 is performed while the first roller 621 is moving on the first horizontal plane S3. The position is restricted to a predetermined rotational position rotated counterclockwise from the neutral rotational position. Since the rotation position of the release lever 62 shown in FIG. 9C is a position in the holding region, the holding members 5a and 5b maintain the state in which the check bar 3 is held. 9B, 9C and the state shown in FIG. 9D described later, that is, the state where the first roller 621 of the release lever 62 is moving forward on the first inclined surface S2 or the first horizontal plane S3 of the first cam member 8a. Called the initial state.

  In the initial movement state, as described above, the release lever 62 is rotated counterclockwise from the neutral rotation position, and the rotation position of the release lever 62 is restricted to the rotation position in the holding region. Therefore, the holding members 5a and 5b maintain the holding of the check bar 3. Accordingly, the inner case 4, the holding members 5a and 5b, and the release member 6 are shown in FIG. 9A together with the first partition plate 9a in conjunction with the relative forward movement of the check bar 3 with respect to the case 2 accompanying the opening operation of the vehicle door DR. Move forward from position to the right. As the first partition plate 9a moves forward, the first spring 7a contracts. For this reason, the extension force of the first spring 7a acts on the inner case 4 and the holding members 5a and 5b via the partition plate 9a, and also acts on the check bar 3 held on the holding members 5a and 5b. Accordingly, the extension force of the first spring 7a acts as a resistance force against the forward movement of the check bar 3 to the right.

  That is, when the operation state of the door check device 1 is the initial movement state, a large force when opening / closing the vehicle door DR, specifically, a force larger than the extension force of the first spring 7a acting on the first partition plate 9a. is necessary. In other words, when the operation state of the door check device 1 is the initial movement state, the extension force of the first spring 7a acts on the vehicle door DR as a braking force.

  In the initial movement state, the release roller 62 is locked to the neutral rotational position by the first roller 621 being locked to the first inclined surface S2 or the first horizontal surface S3 of the first cam member 8a by the urging force of the return spring 65. Returning to is prevented. For this reason, the rotation position of the release lever 62 is restricted to the rotation position in the holding region. In the initial movement state, when the release lever 62 is rotated counterclockwise to the rotation position in the holding region, the second roller 622 opposite to the first roller 621 is separated from the second cam member 8b. To be in a floating state.

  When the operation state of the door check device 1 is the state shown in FIG. 9C and the vehicle door DR is further opened, the inner case 4 and the holding members 5a and 5b are moved in the right direction indicated by the arrow A1 in FIG. While moving further in the forward direction, the first roller 621 of the release lever 62 moves forward on the first horizontal plane S3, and eventually the first roller 621 reaches the forward end of the first horizontal plane S3. FIG. 9D is a partial cross-sectional schematic view of the door check device 1 when the first roller 621 reaches the forward end of the first horizontal plane S3. Even when the first roller 621 reaches the forward end of the first horizontal plane S3, the rotation position of the release lever 62 is still restricted to the rotation position in the holding region, so that the check rods by the holding members 5a and 5b are used. 3 is maintained.

(Release start state)
When the vehicle door DR is further opened from the time when the operation state of the door check device 1 is the state shown in FIG. 9D, the first roller 621 of the release lever 62 further moves forward, but in front of the first horizontal plane S3. Since the space is formed, the first roller 621 is released from the first horizontal plane S3 and discharged into this space. When the first roller 621 is detached from the first horizontal plane S3, the restriction of the rotation of the release lever 62 in the clockwise direction is released, and the release lever 62 is rotated in the clockwise direction of FIG. 9D by the biasing force of the return spring 65. As a result, the first roller 621 also rotates in the clockwise direction. Then, when the first roller 621 contacts the second inclined surface S4, the clockwise rotation is restricted. FIG. 9E is a partial cross-sectional schematic view of the door check device 1 when the first roller 621 contacts the second inclined surface S4.

  In the state shown in FIG. 9E, the release lever 62 rotates clockwise from the rotational position shown in FIG. 9D by the biasing force of the return spring 65. As a result, the rotational position of the release lever 62 is more clockwise than the neutral rotational position. It is located in the rotated position, that is, in the release area. When the release lever 62 rotates from the neutral rotation position to the rotation position in the release region, the rotary cam 61 also rotates in conjunction with the rotation. The holding members 5a and 5b are pressed by the rotating cam 61 by the rotation of the rotating cam 61, and the holding of the check bar 3 by the holding members 5a and 5b is released. The operation state of the door check device 1 when release of the holding of the check bar 3 by the holding members 5a and 5b is started, that is, the state shown in FIG. 9E is referred to as a “release start state”. Further, the position of the pair of holding members 5a and 5b in the case 2 in the release start state is referred to as an “operation position”. In particular, the operation position (the position of the pair of holding members 5a and 5b shown in FIG. 9E) when the vehicle door DR is opened is referred to as an “open operation position”.

  In the release start state shown in FIG. 9E, since the check bar 3 is not held by the pair of holding members 5a and 5b, the check bar 3 does not move integrally with the pair of holding members 5a and 5b. That is, the pair of holding members 5a and 5b and the check bar 3 can be moved separately. In the release start state, since the pair of holding members 5 a and 5 b do not hold the check bar 3, the extension force of the first spring 7 a is not transmitted to the check bar 3. Therefore, when the operation state of the door check device 1 is the release start state, the vehicle door DR can be opened with a small force. In other words, when the operation state of the door check device 1 is the release start state, the braking force hardly acts on the vehicle door DR.

(Release maintenance state)
Even when the release lever 62 is in the rotational position in the release region shown in FIG. 9E, the extension force of the first spring 7a acts on the inner case 4 and the holding members 5a and 5b via the first partition plate 9a. . Accordingly, the urging force (extension force) of the first spring 7a acts on the holding members 5a and 5b as a restoring force (extension force) in a direction to return the holding members 5a and 5b from the opening operation position to the original position. For this reason, immediately after the operation state of the door check device 1 reaches the release start state, the inner case 4 and the holding members 5a and 5b are moved backward in the left direction indicated by the arrow B1 in FIG. 9E by the first spring 7a.

  Then, the release lever 62 also moves backward together with the holding members 5a and 5b. At the same time, the first roller 621 of the release lever 62 moves backward on the second inclined surface S4. The second inclined surface S4 is inclined upward as it goes rearward. Therefore, as the first roller 621 moves backward on the second inclined surface S4, the contact portion between the first roller 621 and the second inclined surface S4 moves upward, and thereby the release lever 62 rotates in the clockwise direction. . The rotation of the release lever 62 in the clockwise direction restricts the rotational position of the release lever 62 to a position in the release region, and the release of the holding of the check bar 3 by the holding members 5a and 5b is maintained. A state after the release start state and in which the rotation position of the release lever 62 is in the release region is referred to as a release maintenance state.

  In the released and maintained state, the pair of holding members 5 a and 5 b do not hold the check bar 3, so the extension force of the first spring 7 a is not transmitted to the check bar 3. Therefore, the vehicle door DR can be opened with a small force when the operation state of the door check device 1 is the release maintenance state. In other words, when the operation state of the door check device 1 is the release maintaining state, the braking force hardly acts on the vehicle door DR.

  The first roller 621 moving backward on the second inclined surface S4 eventually moves from the rear end side of the second inclined surface S4 to the second horizontal plane S5, and moves backward on the second horizontal plane S5. FIG. 9F is a partial cross-sectional schematic view of the door check device 1 when the first roller 621 is moving on the second horizontal plane S5. As shown in FIG. 9F, since the vertical position of the second horizontal plane S5 is equal to the upper end position of the second inclined plane S4, the rotation of the release lever 62 while the first roller 621 moves on the second horizontal plane S5. The position is restricted to a position in the release region rotated clockwise from the neutral rotation position. For this reason, the holding members 5a and 5b maintain the state in which the holding of the check bar 3 is released.

  When the first roller 621 is moving backward on the second horizontal plane S5, the second roller 622 that has been separated from the second cam member 8b until then is rotated by the clockwise rotation of the release lever 62. The second cam member 8b contacts the third horizontal plane S7 and moves backward on the third horizontal plane S7.

  Further, when the first roller 621 moves backward on the second horizontal plane S5, the first roller 621 is pressed against the fifth inclined surface S13 by the urging force of the spring 625. Accordingly, when the first roller 621 is moving on the second horizontal plane S5, the first roller 621 moves in the backward direction while sliding on the fifth inclined surface S13, and the position of the first roller 621 in the thickness direction is increased. It gradually changes from the outside to the inside. Further, the first roller 621 slides on a fifth inclined surface S13 formed so as to be inclined outward in the thickness direction toward the front while being biased outward in the thickness direction by the biasing force of the spring 625. Accordingly, the urging force of the spring 625 acts on the release lever 62 as a resistance force against the backward movement of the holding members 5a and 5b and the release lever 62.

  When the holding members 5a and 5b, the inner case 4 and the release lever 62 are further moved backward by the biasing force (restoring force) of the first spring 7a from the state shown in FIG. 9F, the second roller 622 is moved to the second cam member 8b. Further, the second roller 622 comes into contact with the fourth inclined surface S8 of the second cam member 8b. FIG. 9G is a schematic partial cross-sectional view of the door check device 1 when the second roller 622 comes into contact with the fourth inclined surface S8.

  When the holding members 5a and 5b, the inner case 4 and the release lever 62 are further moved backward by the biasing force (restoring force) of the first spring 7a from the state shown in FIG. 9G, the second roller 622 is moved to the second cam member 8b. It moves backward on the second inclined surface S8 so as to run up on the fourth inclined surface S8. Since the fourth inclined surface S8 is inclined upward in the backward direction (leftward), the second roller 622 is moved to the fourth inclined surface as the release lever 62 moves backward by the restoring force of the first spring 7a. The vertical position at the portion in contact with S8 increases. Accordingly, as the second roller 622 moves backward on the fourth inclined surface S8, the release lever 62 rotates counterclockwise from the rotation position in the release region so that the vertical position of the lower end thereof becomes higher. . FIG. 9H is a partial schematic cross-sectional view of the door check device 1 when the second roller 622 is moving on the fourth inclined surface S8.

  In the state shown in FIG. 9H, when the release lever 62 is slightly rotated counterclockwise from the state shown in FIG. 9G, the first roller 622 is separated from the second horizontal plane S5 of the first cam member 8a and floats. It is assumed that As a result, the upper end of the release lever 62 is brought into a free state. At this time, with the contact portion between the second roller 622 and the fourth inclined surface S8 as a fulcrum, the urging force (compression force) of the return spring 65 acts to pull the release lever 62 rightward in FIG. 9H. This urging force acts on the rotating cam 61 from the release lever 62 and further on the holding members 5a and 5b from the rotating cam 61. The urging direction of the return spring 65 acting on the holding members 5a and 5b in this way is opposite to the direction of the restoring force of the first spring 7a on the holding members 5a and 5b. At this time, the elastic coefficient of the return spring 65 is set so that the urging force of the return spring 65 acting on the holding members 5a and 5b is weaker than the restoring force of the first spring 7a. As a result of the urging force of the return spring 65 and the urging force of the spring 625 described above acting on the holding members 5a and 5b as a reaction force of the restoring force of the first spring 7a, the holding members 5a and 5b, the inner case 4 And the speed at which the release lever 62 moves backward decreases. When the reverse movement speed of the release lever 62 decreases, the rotation speed of the release lever 62 also decreases, and the release lever 62 slowly rotates from the position in the release area to the neutral rotation position. Thereby, the time until the rotational position of the release lever 62 returns from the rotational position in the release region to the neutral rotational position increases. That is, after the holding of the check bar 3 by the holding members 5a and 5b is released, the timing at which the release lever 62 returns to the neutral rotation position and the holding of the check bar 3 by the holding members 5a and 5b is started again is delayed. . In other words, the time during which the holding members 5a and 5b release the holding of the check bar 3 (holding release time) is increased by the biasing force of the return spring 65 in the release maintaining state.

(initial state)
When the second roller 622 further moves back on the fourth inclined surface S8 and climbs up the fourth inclined surface S8, the rotational position of the release lever 62 is returned to the neutral position. At this time, the first roller 621 contacts the reference surface S1 of the first cam member 8a, the second roller 622 contacts the reference surface S1 of the second cam member 8b, and the holding members 5a and 5b are returned to the original positions. . That is, the fourth inclined surface S8 has a rotation position of the release lever so that the rotation position of the release lever 62 rotates from the rotation position in the release region to the neutral rotation position when the holding members 5a and 5b reach the original positions. To regulate. Thus, the operation state of the door check device 1 is restored to the initial state. In the initial state, the check bar 3 is held by the holding members 5a and 5b as described above.

  As described above, when the vehicle door DR is opened, the operation state of the door check device 1 is changed from the initial state (FIG. 9A) to the initial operation state (FIGS. 9B, 9C, and 9D) to the release start state (FIG. 9E). → Release maintenance state (FIGS. 9F, 9G, and 9H) → Initial state, and so on. Even when the vehicle door DR is closed, the operation state of the door check device 1 sequentially changes in the same manner as described above.

  The operation of the door check device 1 when closing the vehicle door DR will be briefly described. For example, when the vehicle door DR is in the fully open state and the opening / closing operation is stopped, the operation state of the door check device 1 is the initial state. When the operation state of the door check device 1 is the initial state, the position of the pair of holding members 5a and 5b is the original position, and the rotation position of the release lever 62 is the neutral rotation position.

  When the vehicle door is closed when the operation state of the door check device 1 is the initial state, the check bar 3 moves in the backward direction indicated by the arrow B1 in FIG. 9A. As the check rod 3 moves backward, the pair of holding members 5 a and 5 b also move backward from the original position in the case 2. As the holding members 5a and 5b move backward, the extension force of the second spring 7b acts on the pair of holding members 5a and 5b as a resistance force. Further, as the holding members 5a and 5b move backward, the second roller 622 of the release lever 62 moves backward on the first inclined surface S2 of the second cam member, so that the release lever 62 rotates counterclockwise in FIG. 9A. Rotate in the direction. Therefore, the rotational position of the release lever 62 is restricted to a position in the holding area.

  When the closing operation of the vehicle door DR proceeds and the pair of holding members 5a and 5b move from the original position to the operating position (closed operating position) when the vehicle door DR is closed, the second roller 622 of the release lever 62 is The two cam members 8b are separated from the second horizontal plane S3, and the release lever 62 is rotated clockwise by the urging force of the return spring 65. Therefore, the rotational position of the release lever 62 is set to a position in the release region, and the holding of the check bar 3 by the pair of holding members 5a and 5b is released. As a result, the vehicle door DR can be smoothly closed with a small force. Even when the holding of the check rod 3 by the pair of holding members 5a and 5b is released, the extension force of the second spring 7b acts on the pair of holding members 5a and 5b. Force), the pair of holding members 5a and 5b is returned from the closed operation position to the original position.

  When the pair of holding members 5a and 5b are returned to their original positions by the urging force of the second spring 7b, the second roller 622 of the release lever 62 slides on the fifth inclined surface S13 of the second cam member 8b. Move forward. At this time, the urging force of the spring 625 acts on the holding members 5a and 5b as a reaction force of the restoring force of the second spring 7b. Further, when the pair of holding members 5a and 5b are returned to the original positions by the biasing force of the second spring 7b, the first roller 621 of the release lever 62 moves on the fourth inclined surface S8 of the first cam member 8a. At this time, the urging force of the return spring 65 acts on the holding members 5a and 5b as a reaction force of the restoring force of the second spring 7b. The biasing force of these springs increases the time until the release lever 62 returns to the neutral rotation position. That is, the timing at which the holding of the check bar 3 by the holding members 5a and 5b is started is delayed.

  When the first roller 621 of the release lever 62 climbs up the fourth inclined surface S8 of the first cam member 8a, the release lever 62 returns to the neutral rotation position and the holding members 5a and 5b return to the original position. The operation state of the door check device 1 returns to the initial state.

  FIG. 10 shows the relationship between the opening degree of the vehicle door DR and the braking force when the door check device 1 according to the present embodiment is used to open the vehicle door DR at a constant speed from the fully closed state. It is a graph. As shown in FIG. 10, when the opening degree of the vehicle door DR is 0 °, that is, when the vehicle door DR is in the fully closed state, the operation state of the door check device 1 is an initial state. In the initial state, as described above, the extension force of the first spring 7a acts on the vehicle door DR as the braking force F1. That is, the braking force when the opening degree is 0 ° is F1. At this time, the rotation position of the release lever 62 is a neutral rotation position.

  Further, when the opening degree is from 0 ° to D1 (> 0), the operation state of the door check device 1 is the initial operation state. In the initial movement state, the check bar 3 is held by the holding members 5a and 5b. As the opening increases from 0 ° to D1, the amount of movement of the holding members 5a and 5b from the original position increases, and the amount of compression of the first spring 7a also increases accordingly. For this reason, the force received by the check rod 3 from the first spring 7a increases in proportion to the increase in the opening degree. Therefore, as the opening degree increases from 0 ° to D1, the braking force also increases from F1, as shown in FIG.

  When the opening degree of the vehicle door DR reaches D1, the braking force is set to the maximum braking force F2. At this time, the holding members 5a and 5b reach the open operation position, and the first roller 621 of the release lever 62 is detached from the first horizontal plane S3. Further, the release lever 62 is rotated in the clockwise direction by the urging force of the return spring 65, and the rotation position thereof is set to a position in the release region. Therefore, the operation state of the door check device 1 is set to the release start state, and immediately after that, the operation state of the door check device 1 is set to the release maintenance state. Since the holding of the check bar 3 by the holding members 5a and 5b is released in the release start state and the release maintenance state, the extension force of the first spring 7a is not transmitted to the check bar 3. Therefore, when the opening degree D2 (> D1) is reached, the braking force rapidly decreases to F0 (<F1), and the vehicle door DR can be opened smoothly (with a small force).

  Until the opening degree of the vehicle door DR reaches D3 to D3 (> D2), the operation state of the door check device 1 is the release maintenance state. As described above, the biasing force of the return spring 65 acts on the release lever 62 in the release maintenance state, and delays the time until the release lever 62 returns from the rotational position in the release region to the neutral rotational position. Can do. Thereby, it is possible to prevent the braking force from suddenly increasing due to the holding members 5a and 5b holding the check rod 3 during the opening operation of the vehicle door DR. When the opening degree of the vehicle door DR reaches D3, the operation state of the door check device 1 returns to the initial state, and the holding of the check rod 3 by the holding members 5a and 5b is started. For this reason, the braking force increases again.

  Here, a case is considered in which the opening operation of the vehicle door DR is stopped when the opening degree of the vehicle door DR reaches an opening degree D4 larger than D2 and smaller than D3. When the opening degree of the vehicle door DR reaches D4, the rotation position of the release lever 62 is in the middle of returning from the rotation position in the release region to the neutral rotation position, and the holding of the check rod 3 by the pair of holding members 5a and 5b is released. Is maintained. That is, the operation state of the door check device 1 is the release maintenance state. Therefore, the braking force acting on the vehicle door DR is small. However, after that, although the opening operation of the vehicle door DR is stopped at the opening degree D4, the release lever 62 rotates toward the neutral rotation position as time passes, and the operation state of the door check device 1 is eventually reached. Returns to the initial state. Thus, after the operation state of the door check device 1 returns to the initial state, a large braking force F1 acts on the vehicle door DR.

  As described above, when the door check device 1 according to this embodiment is used, the opening operation of the vehicle door DR is stopped at any opening (specifically, any opening within the range of the opening D2 to D3). The braking force F1 can be applied to the vehicle door DR at the stopped opening position. Similarly, by using the door check device 1 of the present embodiment, when the closing operation of the vehicle door DR is stopped at an arbitrary opening, the braking force F1 is applied to the vehicle door DR at the stopped opening position. be able to.

  As described above, the door check device 1 according to the present embodiment includes the case 2, the check rod 3, the holding members 5a and 5b, the release member 6, and the pair of springs 7a and 7b (braking force applying members). , Cam members 8a and 8b, and a return spring (biasing force applying member) 65.

  The case 2 is attached to a vehicle door DR connected to the vehicle body B so as to be opened and closed. The check rod 3 is pivotally connected at one end to the vehicle body B, is inserted through the case 2, and moves relative to the case 2 in the axial direction as the vehicle door DR is opened and closed. The holding members 5a and 5b are disposed in the case 2 and can move between the original position and the operating position in the case 2 along the axial direction of the check bar 3 and can hold the check bar 3 Composed. The release member 6 has a rotatable release lever 62 that moves together with the holding members 5a and 5b. When the rotation position of the release lever 62 is in the neutral rotation position or the rotation position in the holding region, the holding members 5a and 5b Depending on the rotation position of the release lever 62, the holding members 5a and 5b release the holding of the check bar 3 when the check bar 3 is held and the release lever 62 is in the rotation position within the release region. It is configured to release the holding of the check bar 3 by the holding members 5a and 5b. The pair of springs 7a and 7b provide the holding members 5a and 5b with a resistance force against the movement when the holding members 5a and 5b move from their original positions, and hold members when the holding members 5a and 5b are in the operating position. A restoring force in a direction to return 5a and 5b to the original position is applied to the holding members 5a and 5b. The cam members 8a and 8b are provided in the case 2, and when the holding members 5a and 5b are in their original positions, the rotation position of the release lever 62 is restricted to the neutral rotation position, and the holding members 5a and 5b are in the operating positions from the original positions. The rotational position of the release lever 62 is restricted to the rotational position in the holding area when moving toward the release position, and the rotational position of the release lever 62 is released when the holding members 5a and 5b move from the operating position toward the original position. The rotation of the release lever 62 is regulated so that the rotation position of the release lever 62 rotates from the rotation position in the release area to the neutral rotation position when the holding members 5a and 5b reach the original position. Regulate the position. Further, when the holding members 5a and 5b reach the operating position, the restriction of the rotational position of the release lever 62 by the cam members 8a and 8b is released. The return spring 65 urges the release lever 62 to rotate in the direction from the neutral rotation position toward the release region.

  The cam members 8a and 8b include a reference surface S1 that contacts the release lever 62 so that the rotation position of the release lever 62 is regulated to the neutral rotation position when the holding members 5a and 5b are in the original position, and the holding member. A first regulating surface (first inclined surface) that contacts the release lever 62 so that the rotational position of the release lever 62 is regulated to the rotational position in the holding region when the 5a and 5b move from the original position toward the operating position. S2, the first horizontal plane S3) and the release lever 62 so that the rotational position of the release lever 62 is regulated to the rotational position in the release region when the holding members 5a, 5b move from the operating position toward the original position. When the second regulating surface (second inclined surface S4, second horizontal surface S5) that contacts and the holding members 5a and 5b reach the original position, the rotation position of the release lever 62 is changed from the rotation position in the release region to the neutral rotation position. Until times A third regulating surface which abuts the release lever 62 so as to (fourth inclined surface S8), the.

  The cam members 8a and 8b are configured so that the first restriction surface and the second restriction surface are in contact with a roller (first roller 621 or second roller 622) provided at one end of the release lever 62, thereby releasing the release lever. The rotational position of the release lever 62 is regulated by contacting the roller (the second roller 622 or the first roller 621) provided at the other end of the release lever 62. Configured to do.

  According to the door check device 1 according to the present embodiment, when the holding members 5a and 5b are located at the original positions in the case 2 and the rotation position of the release lever 62 is at the neutral rotation position (the door check device 1 is the initial position). In the state), the holding members 5a and 5b hold the check bar 3. When the vehicle door DR is opened and closed at this time, the check bar 3 moves in the axial direction in conjunction with the opening and closing operation, and the holding members 5a and 5b are operated from the original position in the case 2 as the check bar 3 moves in the axial direction. Move to position. When the holding members 5a and 5b move from the original position to the operating position, the holding members 5a and 5b are urged in a direction to return to the original position by the resistance force of the pair of springs 7a and 7b. Such a resistance force acts on the vehicle door DR as a braking force.

  Further, when the holding members 5a and 5b move from the original position toward the operating position, the rotation position of the release lever 62 is restricted to the rotation position in the holding region by the cam members 8a and 8b. The holding members 5a and 5b hold the check rod 3 until 5b reaches the operating position. When the holding members 5a and 5b reach the operating position, the restriction of the rotational position of the release collar 62 by the cam members 8a and 8b is released, and the release lever 62 moves toward the release region by the biasing force of the return spring 65. Turned. As a result, the rotational position of the release lever 62 reaches the release region, and the holding of the check bar 3 by the holding members 5a and 5b is released. After the holding members 5a and 5b reach the operating position, the holding members 5a and 5b are returned from the operating position to the original position by the restoring force from the pair of springs 7a and 7b. When the holding members 5a and 5b move from the operating position toward the original position, the rotation position of the release lever 62 is regulated by the cam members 8a and 8b to the rotation position in the release region, so that the holding members 5a and 5b The release of the holding of the check bar 3 by the holding members 5a and 5b is maintained until the original position is reached. When the holding is released, the force from the pair of springs 7a and 7b acting on the holding members 5a and 5b does not act on the check bar 3. That is, when the rotational position of the release lever 62 is in the release region, no braking force is generated on the check bar 3 and the vehicle door DR. For this reason, the vehicle door DR can be opened and closed smoothly.

  When the holding members 5a and 5b reach the original position from the operating position, the release lever 62 is rotated from the rotation position in the release region to the neutral rotation position by the cam members 8a and 8b. Thereby, the holding members 5a and 5b hold the check bar 3 again.

  As described above, according to the door check device 1 according to the present embodiment, the holding members 5a and 5b release the holding of the check bar 3 by the release lever 62 rotating in conjunction with the opening / closing operation of the vehicle door DR. Therefore, the vehicle door DR is smoothly opened and closed, and when the opening and closing operation of the vehicle door DR is stopped at an arbitrary opening degree, the rotation position of the release lever 62 is returned to the neutral rotation position and the holding members 5a, Since 5b holds the check rod 3, a braking force can be generated. Further, since the braking force can be generated at an arbitrary opening degree by the mechanical rotation operation of the release lever 62, a control device or the like is not required and complicated control is not required. For this reason, it can be set as the door check apparatus 1 which is comprised comparatively cheaply and can generate braking force with arbitrary opening.

  Further, when the holding members 5a and 5b return from the operating position to the original position by the restoring force of the first spring 7a or the second spring 7b, the release lever 62 is provided with a fourth inclined surface S8 provided on the cam members 8a and 8b. By moving the first roller 621 or the second roller 622 on the top, it is rotated from the release position to the neutral rotation position. At this time, the biasing force of the return spring 65 biases the release lever 62 in the direction toward the release region. Therefore, the urging force of the return spring 65 acts on the release lever 62 as a reaction force against the restoring force of the first spring 7a or the second spring 7b acting on the holding members 5a and 5b. Since this reaction force acts on the release lever 62 as a reaction force against rotation toward the neutral rotation position of the release lever 62, the time required for the release lever 62 to return to the neutral rotation position due to such reaction force increases. Accordingly, it is possible to prevent the opening / closing operation of the vehicle door DR from being hindered by the release lever 62 returning to the neutral rotational position during the opening / closing operation of the vehicle door DR and suddenly generating braking force.

  Further, when the opening / closing operation of the vehicle door DR is started, the release lever 62 rotates from the neutral position to the rotation position in the holding area. That is, at the start of the opening / closing operation of the vehicle door DR, the release lever 62 rotates in a direction opposite to the direction in which the holding members 5a and 5b release the holding of the check bar 3. Accordingly, when an external force is applied to the vehicle door DR when the opening / closing operation of the vehicle door DR is stopped, the release lever 62 operates toward the release region side, and the holding of the check bar 3 by the holding members 5a and 5b is released. Can be avoided reliably. As a result, the braking force can be reliably applied to the vehicle door DR.

  In addition, the cam members 8a and 8b have a first cam member 8a and a second cam member 8b on which a first restriction surface, a second restriction surface, and a third restriction surface are formed, respectively. The first cam member 8a and the second cam member 8b are disposed point-symmetrically within the case 2 with respect to the rotation center of the release lever 62 when the holding members 5a and 5b are in their original positions. For this reason, regardless of which direction the check bar 3 moves, the release lever 62 can be rotated in the same direction by the cam members 8a and 8b. Therefore, a braking force can be applied to the vehicle door DR regardless of whether the vehicle door DR is opened or closed.

  Further, as shown in FIG. 8, a chamfered portion is formed between the first inclined surface S2 and the first vertical surface S11 of the cam members 8a and 8b. For this reason, when the first roller 621 or the second roller 622 passes the chamfered portion during the transition from the release maintaining state to the initial state, the first roller 621 or the second roller 622 is smoothly referred to by the urging force of the spring 625. Move on surface S1. For this reason, the rotational position of the release lever 62 can be reliably returned to the neutral position. In addition, the first roller 621 or the second roller 622 can be moved on the first inclined surface S2 with high accuracy (without stepping off) in the initial movement state.

  As mentioned above, although embodiment of this invention was described, this invention should not be limited to the said embodiment. For example, in the above-described embodiment, the springs 7a and 7b are illustrated as members that apply the braking force to the vehicle door DR, but the braking force applying member is not limited to the spring. For example, rubber or a fluid pressure generating mechanism that generates fluid pressure can be used as the braking force applying member. Further, although the return spring 65 is illustrated as an urging member that urges the release lever 62 to rotate in the direction from the neutral rotation position to the rotation position in the release region, other configurations may be used. Thus, the present invention can be modified without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 ... Door check apparatus, 2 ... Case, 3 ... Check rod (bar-shaped member), 4 ... Inner case, 5a, 5b ... Holding member, 51 ... Main body, 51a ... Tapered surface, 51b ... Flange part, 52 ... Retainer, 53 ... Ball, 54 ... Internal spring, 6 ... Release member, 61 ... Rotating cam, 61a ... Recess, 62 ... Release lever, 62a ... Projection part, 621 ... First roller, 622 ... Second roller, 623 ... Lever part, 623a ... through-hole, 624 ... rod, 624a ... head, 625 ... spring, 7a ... first spring (braking force applying member), 7b ... second spring (braking force applying member), 8a ... first cam member, 8b ... 2nd cam member, 9a ... 1st partition plate, 9b ... 2nd partition plate, 65 ... Return spring, S1 ... Reference plane, S2 ... 1st inclined surface (1st control surface), S3 ... 1st horizontal surface (1st Restriction surface), S4 ... second inclined surface ( 2 regulating surface), S5 ... second horizontal surface (second regulating surface), S6 ... third inclined surface, S7 ... third horizontal plane, S8 ... fourth inclined surface (third regulating surface)

Claims (4)

A case attached to either the vehicle body or a vehicle door connected to the vehicle body so as to be openable and closable;
A rod-like member whose one end is swingably connected to either the vehicle body or the vehicle door, is inserted through the case, and moves relative to the case in the axial direction as the vehicle door opens and closes. When,
A holding member disposed in the case and configured to be movable between an original position and an operating position in the case along the axial direction of the rod-shaped member, and capable of holding the rod-shaped member;
A rotatable release lever that moves together with the holding member, and the holding member is in a neutral rotation position or a holding region that is a rotation region rotated in one direction from the neutral rotation position; The release is performed so that the holding member releases the holding of the bar-shaped member when the bar-shaped member is held and the rotation position of the release lever is in a release area which is an area rotated in the other direction from the neutral rotation position. A release member configured to release the holding of the rod-shaped member by the holding member in accordance with the rotation position of the lever;
When the holding member moves from the original position, a resistance force to the movement is applied to the holding member, and when the holding member is in the operating position, a restoring force in a direction to return the holding member to the original position. A braking force applying member for applying a force to the holding member;
A cam member provided on the case and in contact with the release lever, wherein the rotation position of the release lever is restricted to the neutral rotation position when the holding member is in the original position, and the holding member is moved from the original position. The rotational position of the release lever is restricted to the rotational position in the holding area when moving toward the operating position, and the rotational position of the release lever is adjusted when the holding member moves from the operating position toward the original position. The release lever is restricted to a rotational position in the release region, and the release lever is rotated from the rotational position in the release region to the neutral rotational position when the holding member reaches the original position. A cam member for regulating the rotational position of
An urging member that urges the release lever to rotate in a direction from the neutral rotation position toward the release region;
A door check device. The door check device according to claim 1,
The cam member includes a reference surface that contacts the release lever so that the rotation position of the release lever is regulated to the neutral rotation position when the holding member is in the original position, and the holding member is operated from the original position. A first regulating surface that contacts the release lever so that the rotational position of the release lever is regulated by the rotational position in the holding area when moving toward the position, and the holding member is moved from the operating position to the original position. A second restricting surface that contacts the release lever so that the rotational position of the release lever is regulated to the rotational position in the release region when moving toward the second position, and when the holding member reaches the original position, A door check device, comprising: a third restriction surface that contacts the release lever so that a rotation position of the release lever rotates from a rotation position in the release region to the neutral rotation position. The door check device according to claim 2,
The cam member restricts the rotational position of the release lever by the first restriction surface and the second restriction surface being in contact with one end of the release lever, and the third restriction surface is the release lever. A door check device configured to regulate the rotational position of the release lever by contacting the other end. The door check device according to claim 3,
The cam member includes a first cam member and a second cam member on which the first restriction surface, the second restriction surface, and the third restriction surface are formed, respectively.
The door check device, wherein the first cam member and the second cam member are arranged point-symmetrically in the case.

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