JP5370015B2 - Locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a gap or prevent the generation of a gap in the state where a lock device and a striker are engaged with each other, and to reduce the size of a lock device. <P>SOLUTION: The lock device 20 includes a base 22, a hook 30 and a pole 40. The pole 40 is constituted of a turning pole 50 and a slide pole 70. A turning range is set where the contact of the turning pole 50 with the slide pole 70 caused by the rotation makes pressure angle contact. In the rotation range where the pressure angle contact is made, the action is in such a state that the hook 30 is held in a state of lock position by the pole. In the state of lock position of the hook 30, the turning pole 50 is rotated by the biasing force of the spring 80. The hook 30 is further rotated in the direction to clamp the striker S through the slide pole 70 by the pressure angle contact with the slide pole 70. Thereby, the striker S is clamped without a gap between a clamp arm 34 of the hook 30 and the bottom 24a of the striker engaging recess 24 formed on the base 22. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a locking device. Specifically, in order to fix the movable member in the vehicle to the fixed member in the vehicle, the movable member or the other of the fixed member that is engaged with the striker disposed on one of the movable member or the fixed member is equipped. It relates to a locking device.

  Conventionally, in order to fix a movable member in a vehicle such as an automobile to a fixed member in the vehicle, the movable member or the other of the fixed member engaged with a striker disposed on one of the fixed member is equipped. A known locking device is known. For example, there is a lock device in which a vehicle seat composed of a seat back and a seat cushion as a movable member in a vehicle engages with a striker disposed on a vehicle body floor as a fixed member in the vehicle.

  The movable configuration of the vehicle seat is a configuration in which the posture is changed so as to be rotatable in the vehicle front-rear direction around the front lower end portion of the seat cushion in a state where the seat back and the seat cushion are folded in a compact manner. When the vehicle seat is not used, the posture of the vehicle seat can be changed so that a space for installing the vehicle seat can be made to be a cargo space. When the vehicle seat is not used, the seat back is folded forward from the seated standing posture to the vehicle forward direction and folded on the seat cushion. Next, the folded vehicle seat is raised toward the front of the vehicle around a pivot shaft provided at the front lower end portion of the seat cushion, and is set to a retracted posture state position in which the vehicle seat stands on the vehicle floor. On the other hand, when using the vehicle seat, the vehicle seat in the retracted position is laid down from the retracted position to the vehicle floor, and is disposed on the vehicle floor with the locking device disposed at the lower end of the seat cushion. After engaging the striker and holding it in the seating posture state position, the seat back is erected to obtain the seating posture.

  The striker engages with the locking device by inserting the striker into a recess formed in the base member, and holding the striker by the recess of the base member and a hook pivotally supported by the base member together with the hook. A pole pivotally supported by the base member is configured to hold the locked state of the hook. Here, it is desirable that the locked state of the locking device and the striker has no gap between the recess and the striker held between the hooks. This is because such a gap causes play in the locking device, which causes problems such as abnormal noise caused by the play and vibrations caused by wobbling of the seat.

Heretofore, the following techniques are known as techniques for reducing or preventing the gap in the engagement state between the lock device and the striker.
Generally, the locking device is configured with a pole for holding the striker that has entered the recess of the base member between the recess and the hook. The pole is divided and the hook is locked. There is known a technique in which a function of holding the state and further rotating the hook in a direction to sandwich the striker is added (for example, Patent Documents 1 and 2).

Japanese Patent No. 3987343 JP 2005-263109 A

  However, in the technique of the above-mentioned patent document, the divided poles are configured to be pivotally supported by the base member so that the space for disposing the poles increases and the lock device becomes larger. There was a problem. Further, since the divided poles are pivotally supported, there are concerns that the number of parts to be pivoted increases, which may increase the component cost and processing cost.

  Therefore, as a result of intensive studies, the present inventor has an important pivotal direction in which the striker is sandwiched between the hooks configured in the lock device and the lock device is in the locked position in order to reduce the clearance between the lock device and the striker. It came to be. That is, the pivoting direction in which the hook is further rotated in the direction in which the striker is sandwiched is important. In order to operate the hook in the pivoting direction, all the divided poles are not configured to rotate. We focused on the fact that even a pole with a split configuration can be made compact if it can be replaced with an operation.

  Thus, the present invention has been devised in view of such points, and the problem to be solved by the present invention is to reduce or prevent a gap in the engagement state between the lock device and the striker and The purpose is to reduce the size of the apparatus.

In order to solve the above problems, the vehicle seat locking device of the present invention takes the following means.
First, in order to fix the movable member in the vehicle to the fixed member in the vehicle, the first invention is that of the movable member or the fixed member engaged with the striker disposed on one of the movable member or the fixed member. A locking device provided on the other side, wherein a base member formed with a recess that engages with the striker is supported by the base member so as to be rotatable by a first shaft, and the striker is supported by the base member. The striker that rotates in conjunction with the engaging operation that enters the formed recess and closes the opening of the recess by the rotation is inserted between the striker and the bottom of the recess. A hook that can be held in a locked position and a base member, and a spring member is hooked between the hook and the hook in a locked position. And a pole that serves to hold the hook in the locked position by the biasing force of the spring member when the spring member is pivoted to the base member, and the pole is pivotable on the base member by a second shaft. A first pole that is supported and biased in a rotational direction in which the biasing force of the spring member holds the hook in the locked position; and the base member is interposed between the first pole and the hook. And a second pole capable of transmitting the operation of the first pole to the hook. The second pole associated with the rotation of the first pole. A rotation range for pressure angle contact is set for contact with the pole, and the rotation range for pressure angle contact is an operating state in which the hook is held in the locked position by the pole, When the hook is in the locked position The first pole is rotated by the biasing force of the spring member, and the hook is further rotated in the direction of holding the striker via the second pole by the pressure angle contact with the second pole. The striker is clamped between the hook holding arm of the hook and the bottom of the recess formed in the base member without any gap.

  According to the first aspect of the present invention, the configuration in which the second pole, which is one of the split configuration poles, is configured to slide and move, so that the configuration supporting the shaft can be reduced, and the parts cost and processing cost can be reduced. Can do. In addition, the second pole can be reduced in size by reducing the support structure, and the lock device can be reduced in size by suppressing the space in the base member. The first pole has a rotation range in which pressure angle contact is set, and the second pole is configured to slide so that the hook is further rotated in a direction to sandwich the striker. Thereby, a 1st pole and a 2nd pole can be provided, without setting it as a complicated structure. Further, the hook can be further rotated in the direction of holding the striker stably by the pressure angle contact set on the first pole. Thereby, the reduction | decrease or prevention of the clearance gap in the engagement state of a locking device and a striker can be achieved further.

  According to the present invention, by taking the above-described means, it is possible to reduce or prevent a gap in the engaged state of the lock device and the striker and to reduce the size of the lock device.

It is the side view which showed schematic structure by which the locking device which concerns on Example 1 was arrange | positioned by the vehicle seat. FIG. 3 is an exploded perspective view illustrating each configuration of the locking device according to the first embodiment. It is the side view which showed the state in which the locking device which concerns on Example 1 and a striker do not engage, and a hook is located in a lock release position state. (A) The figure is the side view which showed the whole locking device. (B) The figure is the side view which expanded and showed the engagement state of the hook and the pole. It is the side view which showed the state which the locking device based on Example 1 and a striker engage, and a hook is located in a locked position state. (A) The figure is the side view which showed the whole locking device. (B) The figure is the side view which expanded and showed the engagement state of the hook and the pole. FIG. 6 is a side view showing a state in which the hook is further rotated in a direction to sandwich the striker from the position of the lock position in the engagement between the lock device and the striker according to the first embodiment. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The configuration of the locking device 20 according to the first embodiment will be described with reference to FIGS. 1 to 5.
FIG. 1 is a side view showing a schematic configuration in which a locking device 20 according to a first embodiment is disposed on a vehicle seat 10. FIG. 2 is an exploded perspective view illustrating each configuration of the locking device 20 according to the first embodiment. FIG. 2 illustrates each configuration of the locking device 20, and does not illustrate each configuration of the seat cushion 11. FIGS. 3 to 5 are side views showing states of respective configurations of engagement and release of the lock device 20 and the striker S according to the first embodiment. Each of FIGS. 3 to 5 omits one of the base plates 22a and 22b, which is the structure of the base member, in order to better represent the internal configuration of the locking device 20. 3 and 4, (a) shows the entire locking device 20, and (b) shows an enlarged state of engagement between the hook 30 and the pole 40.

The locking device according to the present invention is configured so that the movable member in the vehicle is engaged with a striker disposed on one of the movable member or the fixed member in order to fix the movable member in the vehicle to the fixed member in the vehicle. It is related with the locking device equipped with.
In the first embodiment, as illustrated in FIG. 1, as a configuration of the movable member in the vehicle, the vehicle seat 10 including the seat back 12 and the seat cushion 11, and the configuration of the fixed member in the vehicle as the vehicle body A configuration of the locking device 20 that engages with the striker S disposed on the floor F will be described. In this embodiment, the vehicle seat 10 corresponds to the “movable member” of the present invention, and the vehicle body floor F corresponds to the “fixed member” of the present invention. As illustrated in FIG. 1, the installation location of the striker S is only schematically illustrated, but is installed in a vehicle structure constituting the vehicle. In the first embodiment, the striker S is formed by bending a metal bar-like member and is disposed on the vehicle body floor F so as to be engageable with a locking device 20 provided at the rear lower end of the seat cushion 11.

  First, after describing the schematic configuration of the locking device 20 provided in the vehicle seat 10, each configuration will be described. The first embodiment is characterized in the configuration of the locking device 20 for the vehicle seat 10. Since the other parts of the vehicle seat 10 have a conventionally known configuration, the description thereof may be omitted. As shown in FIG. 1, the vehicle seat 10 of the first embodiment is used in any of the driver seat and the passenger seat in the first row of the vehicle, and the rear seats arranged in the second row and the third row. It is adopted. In addition, the vehicle seat 10 of the first embodiment shows the configuration of the rear seat disposed in the second row of the vehicle.

As shown in FIG. 1, the vehicle seat 10 is provided as a seat for an occupant to be seated. Generally, a seat back 12 serving as a backrest portion, a seat cushion 11 serving as a seating portion, It is comprised from the headrest 13 used as a head drown. The vehicle seat 10 is configured to be movable so that the posture can be changed.
The movable configuration of the vehicle seat 10 can be changed in posture so that the seat back 12 and the seat cushion 11 can be rotated in the vehicle front-rear direction around the front lower end portion of the seat cushion 11 in a compactly folded state. When the vehicle seat 10 is not used, the posture of the vehicle seat 10 is changed, and a space for installing the vehicle seat 10 is made to be a cargo space.

  As shown in FIG. 1, when the vehicle seat 10 is not in use, the seat back 12 rotatably connected to the seat cushion 11 is moved forward from the seated posture to the vehicle forward direction. Fold it over the seat cushion 11. Thereafter, the folded vehicle seat 10 is raised toward the front of the vehicle around a pivot shaft 14 provided at the front lower end of the seat cushion 11 and stood up with respect to the vehicle body floor F. State position 10B. On the other hand, when using the vehicle seat 10, the vehicle seat 10 in the retracted posture state position 10 </ b> B falls from the retracted posture state position 10 </ b> B to the vehicle body floor F and is disposed at the rear lower end of the seat cushion 11. The apparatus 20 and the striker S disposed on the vehicle body floor F are engaged and held at the seating posture state position 10A, and then the seat back 12 is raised to be in the seating posture.

As shown in FIG. 2, the locking device 20 is roughly configured to have a base member 22 in which a striker engagement recess 24 is formed as a recess into which the striker S (see FIG. 1) enters, and the base member 22 is rotatable. The hook 30 pivotally supported by the shaft 30, the pole 40 that serves to hold the hook 30 in the locked position state 30 </ b> B (see FIG. 4), the spring member 80 that connects the hook 30 and the pole 40, and the hook 30 can be rotated. A hook hinge pin 39 for pivotally supporting the pole 40, a pole hinge pin 49 for pivotally supporting the pole 40, and an operation transmitting member 90 for transmitting an operating force to the pole 40.
The striker S is engaged with the lock device 20 in a configuration in which the striker S enters the striker engagement recess 24 of the base member 22 and the striker S is clamped by the striker engagement recess 24 and the hook 30 to be locked. is there. Here, the lock device 20 has a function for reducing a gap between the striker engagement recess 24 and the striker S held by the hook 30 in the lock position state 30B of the lock device 20 and the striker S (see FIG. 4). have. Such a function is achieved by making the pole 40 into a divided configuration, holding the hook 30 in the locked position state 30B, and further rotating the hook 30 in a direction to sandwich the striker S.
The detailed configuration and operation of the locking device 20 will be described below.

The base member 22 will be described.
As shown in FIG. 1, the locking device 20 is fixedly installed on a seat cushion frame (not shown) constituting the seat cushion 11 via the base member 22. The base member 22 is configured to support components configured in the lock device 20 such as a hook 30 and a pole 40 described later. The base member 22 is formed with a recess that engages with the striker S disposed on the vehicle body floor F.
As shown in FIG. 2, the base member 22 is composed of two base plates 22a and 22b formed of a metal plate-like member. The base plates 22a and 22b include a hook 30 and a pole 40. It is comprised so that it may be inserted and supported. Both the base plates 22a and 22b are provided with striker engaging recesses 24.

  As shown in FIG. 2, the striker engaging recess 24 is formed to engage with the striker S, and is recessed so as to be cut out from the outer periphery of the base member 22 toward the center. It is formed in a concave shape. Specifically, the striker engaging recess 24 is formed from a bottom portion 24a having an arc shape larger than the diameter of the striker S at a substantially center of the base member 22, and from the outer periphery of the base member 22 to the bottom portion 24a. And a striker guide portion 24b formed in a guide groove shape. The striker guide portion 24 b is formed in an opening shape in which the outer peripheral portion of the base member 22 is expanded, and is formed in a guide groove shape that is smoothly narrowed toward the bottom portion 24 a at the substantially center of the base member 22. The striker engaging recess 24 corresponds to the “recess” of the present invention, and the bottom 24a corresponds to the “bottom” of the present invention.

  Further, on the plate surface of the base member 22, there is provided a rotation support hole 28a through which a hook hinge pin 39 for rotatably supporting a hook 30 described later is inserted. The hook hinge pin 39 corresponds to the “first shaft” of the present invention. Further, the base member 22 is provided with a rotation support hole 28b through which a pole hinge pin 49 for rotatably supporting a rotation pole 50 (first pole) which is a configuration of the pole 40 described later is inserted. ing. This pole hinge pin 49 corresponds to the “second axis” of the present invention.

  A slide groove 26 is formed on the plate surface of the base plate 22a of the base member 22 between the rotation pole 50 (first pole) and the hook 30, and a slide pole 70 (second pole) described later is formed. Is slidably arranged with respect to the base member 22. When the slide pole 70 (second pole) slides on the slide groove 26, the operation of the rotation pole 50 (first pole) can be transmitted to the hook 30. Further, the end portions of the base plates 22a and 22b are bent at a substantially right angle to form a side wall portion 29. The hook 30 is configured to rotate to a position where it abuts against the side wall 29, and this abutting position is configured as the maximum unlocking position of the hook 30, and the side wall 29 serves as a stopper for the rotation of the hook 30. Make a function.

Next, the hook 30 will be described.
As shown in FIG. 2, the hook 30 is pivotally supported so that a hook hinge pin 39 is inserted into the rotation support hole 28 a of the base member 22 and can be rotated. The hook 30 rotates in conjunction with the engagement operation in which the striker S (see FIG. 1) enters the striker engagement recess 24 formed in the base member 22, and the striker engagement recess 24 is rotated by this rotation. The striker S that has entered the striker engaging recess 24 by the sandwiching arm 34 that closes the opening of the open portion is sandwiched between the bottom portion 24a and the locked position state 30B is obtained. The hook 30 is switched to the following three states by engagement with the striker S and a pole 40 described later.

  As shown in FIG. 3, the first state is a state before the striker S is engaged and a lock release position state 30A in which the holding of the hook 30 is released so as to release the engagement of the striker S. . As shown in FIG. 4, the second state is a locked position state 30 </ b> B in which the striker S that has entered the striker engagement recess 24 is held between the bottom 24 a by the holding arm 34 of the hook 30. . In the third state, as shown in FIG. 5, the hook 30 is further rotated in the direction in which the striker S is clamped, and the striker S is clamped between the hook clamping arm 34 and the bottom 24 a without any gap. The hook driving position state 30C.

Specifically, as shown in FIG. 2, the hook 30 is a metal plate-like member formed in a substantially U shape, and roughly includes a rotation support hole 31 and a striker engaging portion 32. And a striker detection arm 33, a clamping arm 34, a corner portion 35, a spring locking portion 37, and a hook contact portion 38.
The rotation support hole 31 is formed so as to penetrate substantially the center of the hook 30 and the hook hinge pin 39 is inserted therethrough. The hook hinge pin 39 supports the hook 30 to be rotatable with respect to the base member 22. In the state where the hook 30 is sandwiched between the base plates 22a and 22b, the rotation support hole 28a formed in the base plates 22a and 22b and the rotation support hole 31 of the hook 30 are disposed at coaxial positions. . In this state, the hook hinge pin 39 is inserted and attached. As a result, the hook 30 is rotatably supported with respect to the base member 22 by the hook hinge pin 39 inserted through the rotation support hole 31. In other words, the hook hinge pin 39 inserted into the rotation support hole 31 becomes the rotation center of the hook 30.

As shown in FIGS. 3 to 5, the striker engaging portion 32 is formed with a groove having a width larger than the diameter of the striker S in order to engage with the striker S. The groove of the striker engagement portion 32 is formed by a striker detection arm 33 formed in a protruding shape from the inner side of the hook 30 toward the outer side and a holding arm 34. The striker detection arm 33 detects the entry of the striker S and rotates the hook 30 in conjunction with the striker S when the striker S enters the striker engagement recess 24 formed in the base member 22. Is. The striker detection arm 33 is disposed closer to the rotation support hole 31 than the pinching arm 34. Further, the protrusion amount of the hook 30 from the inner side to the outer side is formed longer than the holding arm 34.
The holding arm 34 is configured to close the opening of the striker engaging recess 24 formed in the base member 22 by taking the striker S into the striker engaging portion 32 by the rotation of the hook 30 when the striker S is engaged. It has been done. The projecting amount of the holding arm 34 from the inner side to the outer side of the hook 30 is formed to project to a length necessary to close the opening of the striker engaging recess 24.

  As shown in FIGS. 3 to 5, the corner portion 35 is configured to engage with a slide pole 70 formed on a pole 40 described later. The corner portion 35 is formed in a protruding shape protruding from the inner side to the outer side of the hook 30, and a sliding portion 35 a on which the slide pole 70 slides is formed on the outer periphery of the protruding tip portion. ing. Further, a hook engaging recess 35b in which the slide pole 70 is accommodated when the hook 30 is rotated to the locked position state 30B is formed adjacent to the sliding portion 35a.

  As shown in FIGS. 3 to 5, the spring locking portion 37 is a portion for locking one end of a spring member 80 to be described later, and the striker engaging portion 32 with respect to the rotation support hole 31. It is formed in the opposite position. The hook contact portion 38 functions as a stopper that stops the rotation by contacting the side wall 29 of the base member 22 when the hook 30 is rotated to the unlocked position state 30A (see FIG. 3). The rotation support hole 31 is provided at a position opposite to the corner portion 35 with which the slide pole 70 is engaged.

As shown in FIG. 3, the hook 30 is urged clockwise about the rotation support hole 31 by the urging force of the spring member 80. For this reason, in the unlocking position state 30A in which the engagement of a slide pole 70 as a pole 40 described later and the hook engaging recess 35b of the hook 30 is released, the hook 30 is urged clockwise. The striker S is disengaged from the striker engaging portion 32. Further, the unlocked position state 30 </ b> A is also a state where the striker S enters the striker engagement recess 24 and can be engaged with the striker engagement portion 32.
As shown in FIG. 4, when the striker S is engaged, the hook 30 is pushed by the striker S and rotates counterclockwise against the biasing force of the spring member 80. The slide pole 70 formed on the pole 40 and the hook engaging recess 35b of the hook 30 are engaged with each other, and the locked position state 30B is maintained in which the engagement is maintained.

Next, the pole 40 will be described.
As shown in FIGS. 3 to 5, the pole 40 is disposed on the base member 22, and a spring member 80 is hooked between the hook 30 as a tension spring connection state. And is operated in accordance with a pulling operation of the operation transmission member 90 described later, and switches between the unlocking position state 30A, the locking position state 30B, and the hook driving position state 30C of the hook 30. Is.

  As shown in FIG. 2, the pole 40 is composed of two of a rotation pole 50 and a slide pole 70 and is disposed on the base member 22. As shown in FIG. 4, the pole 40 functions to hold the hook 30 in the locked position state 30B by the biasing force of the spring member 80 when the hook 30 is rotated to the locked position state 30B. Further, as shown in FIG. 5, the pole 40 further rotates the hook 30 in the direction in which the striker S is sandwiched by the biasing force of the spring member 80 in the lock position state 30B of the hook 30 so that the striker S It functions to hold in the hook drive-in position state 30C that is clamped between the clamping arm 34 and the bottom 24a without any gap. As shown in FIG. 3, the pole 40 functions to release the hook 30 held in the hook drive-in position state 30 </ b> C to the unlocked position state 30 </ b> A by performing a pulling operation of an operation transmission member 90 described later. . The rotating pole 50 corresponds to the “first pole” of the present invention, and the slide pole 70 corresponds to the “second pole” of the present invention.

The rotation pole 50 will be described.
As shown in FIGS. 3 to 5, the rotation pole 50 is rotated in conjunction with the urging force of the spring member 80 that is hooked with the hook 30 as a tension spring connection state, so that the hook 30 is hooked. It serves to urge 30 in the rotational direction to hold 30 in the locked position state 30B. The rotation pole 50 is generally composed of a slide pole engaging member 52 and an unlocking member 60, and is formed by a pole hinge pin 49 inserted into the rotation support hole 28b (see FIG. 2) of the base member 22. It is pivotally supported so that it can rotate as a unit around this pole hinge pin 49.

  As shown in FIG. 2, the pole hinge pin 49 supports the slide pole engaging member 52 and the lock releasing member 60 so as to be rotatable with respect to the base member 22. The pole hinge pin 49 is formed with a fitting portion 48 for rotating the slide pole engaging member 52 and the lock releasing member 60 together. The fitting portion 48 has a cylindrical portion 48a that is the outer peripheral portion of the cylinder of the pole hinge pin 49. In the axial direction of the cylindrical portion 48a, the fitting portion 48 is notched in a planar shape at a predetermined distance in the radial direction from the center of rotation. The formed two plane portions 48b are formed in parallel with the rotation center in between, and have a substantially square cross section.

  As shown in FIGS. 2 to 5, the slide pole engaging member 52 has a function of rotating around the pole hinge pin 49 and engaging with a slide pole 70 described later to slide. The slide pole engaging member 52 is formed of a metal plate-like member, and has a substantially disc-shaped base portion 54 in which a fitting hole 58 through which the pole hinge pin 49 is inserted, and a rotation center of the base portion 54. And an engaging projection 56 that is formed in a protruding shape in the radial direction and engages with the slide pole 70. The fitting hole 58 is formed with a substantially square cross-section through which the fitting hole 58 is fitted to the cylindrical portion 48a and the flat portion 48b of the fitting portion 48 of the pole hinge pin 49. On the outer periphery of the engaging protrusion 56, a sliding portion 56a on which the slide pole 70 slides is formed. In addition, a pole engaging recess 56b that accommodates the slide pole 70 when the hook 30 is rotated to the unlocked position state 30A is formed adjacent to the sliding portion 56a.

  As shown in FIGS. 2 to 5, the lock release member 60 is operated by the operation transmission member 90 on the rotation pole 50 that is biased in the rotation direction that holds the hook 30 in the hook driving position state 30 </ b> C. It is configured to release the engagement between the striker S and the hook 30 by exerting force to release the lock release position state 30A. This unlocking member 60 is formed of a metal plate-like member in the shape of a long plate, and has a fitting hole 68 that fits into the fitting portion 48 of the pole hinge pin 49 at one end and a hook at the other end. 30, a spring locking portion 62 on which one end of a spring member 80 hooked as a tension spring connection state is hooked, and an operation transmission member connecting portion to which an operation transmission member 90 is connected adjacent to the spring locking portion 62 64. Similar to the fitting hole 58 formed in the slide pole engaging member 52 described above, the fitting hole 68 is a cross section that fits into the cylindrical portion 48a and the flat portion 48b of the fitting portion 48 of the pole hinge pin 49. A substantially square-shaped through-hole is formed.

  As shown in FIG. 2, the slide pole engaging member 52 and the unlocking member 60 are sandwiched between the base plates 22a and 22b, and the rotation support holes 28b formed in the base plates 22a and 22b. The fitting hole 58 of the slide pole engaging member 52 and the fitting hole 68 of the unlocking member 60 are disposed at coaxial positions. In this state, the pole hinge pin 49 is inserted and attached. As a result, the slide pole engaging member 52 and the lock releasing member 60 are rotatably supported as a unit with respect to the base member 22 by the pole hinge pins 49 inserted through the fitting holes 58 and 68. In other words, the pole hinge pin 49 inserted through the fitting holes 58 and 68 serves as the rotation center of the pole 40.

The slide pole 70 will be described.
As shown in FIGS. 2 to 5, the slide pole 70 is disposed between the rotation pole 50 and the hook 30 so as to be slidable with respect to the base member 22. Is transmitted to the hook 30.
The slide pole 70 has a metal plate-like member formed in a substantially trapezoidal shape. In FIG. 3, the left end portion is configured with a hook side engaging portion 72 formed so as to be able to be accommodated in the concave portion of the hook engaging concave portion 35 b of the hook 30. In this embodiment, the hook engaging concave portion 35 b An inclined portion that can be accommodated in the recess is formed. Further, the tip end portion of the hook side engaging portion 72 includes a hook side sliding tip portion 74 that contacts and slides on a sliding portion 35 a formed on the outer periphery of the corner portion 35 of the hook 30.
In FIG. 3, a pole-side engagement portion 76 formed so as to be accommodated in the recess of the pole engagement recess 56 b of the slide pole engagement member 52, which is the configuration of the rotation pole 50, is configured on the right end. In this embodiment, an inclined portion that can be accommodated in the recess of the pole engaging recess 56b is formed. Further, the tip end portion of the pole side engaging portion 76 is in contact with and slides on the sliding portion 56a formed on the slide pole engaging member 52 which is the configuration of the rotating pole 50. Is provided.
Further, as shown in FIG. 2, a protrusion 79 that engages with the slide groove 26 formed on the plate surface of the base plate 22a is formed on the surface of the base member 22 facing the base plate 22a. The slide pole 70 is regulated within the formation region of the slide groove 26, slides relative to the base member 22, and transmits the operation of the rotation pole 50 to the hook 30.

Next, the configuration of the pressure angle contact provided on the rotation pole 50 will be described.
As shown in FIGS. 3 to 5, the rotation pole 50 of the locking device 20 is rotated so that a pressure angle is brought into contact with the slide pole 70 when the rotation pole 50 rotates. A range is set. With this pressure angle contact configuration, the slide pole 70 is slid in the direction of the hook 30, and the hook 30 is further rotated in the direction to sandwich the striker S (from the lock position state 30B to the hook drive position state 30C). The striker S is clamped between the clamping arm 34 of the hook 30 and the bottom 24a of the striker engaging recess 24 formed in the base member 22 without any gap.

  This pressure angle contact portion includes a sliding portion 56a formed on the outer periphery of the engaging protrusion 56 of the slide pole engaging member 52, which is a constituent member of the rotating pole 50, and a pole side sliding tip of the slide pole 70. This is a portion where 78 abuts. The rotation range of the rotation pole 50 in which the pressure angle abuts with the slide pole 70 is from the position of the rotation pole 50 in the operating state in which the hook 30 is held in the lock position state 30B. Thus, the rotation pole 50 is further rotated to the hook drive position state 30C. The sliding part 56a formed on the outer periphery of the engaging protrusion 56 has a pressure angle θ in which the end side is inclined in a wedge shape with respect to the arc R having the pole hinge pin 49 as the rotation center.

  The slide pole 70 is slid in the direction of the hook 30 by the sliding portion 56a in which the inclined surface of the pressure angle θ is formed, and the hook 30 is further rotated in the direction of sandwiching the striker S. That is, when the hook 30 is in the locked position state 30B, the sliding portion 56a and the pole side sliding tip 78 of the slide pole 70 are in contact with each other. The rotating pole 50 is rotated counterclockwise in FIG. 3 by the biasing force of the spring member 80 from the contact state. Then, the slide pole 70 slides in the direction of the hook 30 while sliding on the sliding portion 56a in which the pole side sliding tip 78 forms an inclined surface having the pressure angle θ. By this sliding movement, the hook side engaging portion 72 of the slide pole 70 is engaged in the state of being accommodated in the hook engaging recess 35b of the hook 30, and the hook 30 is further rotated in the direction of sandwiching the striker S ( From the locked position state 30B to the hook driving position state 30C), the striker S is clamped between the clamping arm 34 of the hook 30 and the bottom 24a of the striker engaging recess 24 formed in the base member 22 without any gap.

The spring member 80 will be described.
As illustrated in FIGS. 3 to 5, the spring member 80 is configured by a so-called coil spring. One end of the hook 30 serving as the spring locking portion 37 and the other end of the pole 40 serving as the spring locking portion 62 are urged so as to approach each other. As a result, as described above, the hook 30 is urged clockwise and the pole 40 is urged counterclockwise as shown in FIG.

The operation transmission member 90 will be described.
As shown in FIGS. 3 to 5, the operation transmission member 90 is one configuration of an operation lever device that performs an operation for releasing the engagement of the striker S by the lock device 20. The operation force of the seated person exerted on the operation lever (not shown) provided on the seat 10 is transmitted through the inside of the vehicle seat 10 to the lock device 20 installed on the seat cushion 11.

The operation of the locking device 20 in the present embodiment having the above-described configuration is as follows.
As shown in FIG. 3, this state is a lock release position state 30 </ b> A where the lock device 20 and the striker S are not engaged. When the striker S enters the striker engagement recess 24 of the base member 22 from this state, the striker detection arm 33 detects the striker S. The hook 30 rotates counterclockwise about the hook hinge pin 39 against the bias of the spring member 80. The holding arm 34 of the hook 30 takes in the striker S into the striker engagement portion 32 and closes the striker engagement recess 24 of the base member 22. The striker S is held between the holding arm 34 and the bottom 24a of the striker engaging recess 24. At this time, the hook-side sliding tip 74 formed at the left end of the slide pole 70 slides on the sliding portion 35 a configured at the corner 35 of the hook 30. When the hook 30 is further rotated counterclockwise, the sliding portion 35a and the hook side sliding tip 74 are disengaged. And the hook side engaging part 72 is accommodated in the hook engaging recessed part 35b. Thereby, the slide pole 70 slides in the hook 30 direction. When the slide pole 70 is slid in the hook 30 direction, the pole-side engagement portion 76 formed at the right end of the slide pole 70 is disengaged from the position accommodated in the pole engagement recess 56b. The side sliding tip 78 is in contact with the sliding part 56a. Thus, the hook 30 is held in the locked position state 30B.

In the lock position state 30B described above, the rotation pole 50 is rotated counterclockwise in FIG. Along with this, the slide pole 70 slides on the inclined surface of the pressure angle θ formed at the sliding portion 56 a of the slide pole engaging member 52 having the pole side sliding tip 78 as the structure of the rotating pole 50. As a result, it slides in the direction of the hook 30. Then, the slide of the slide pole 70 causes the hook 30 to be further rotated counterclockwise with the hook side sliding tip 74 of the slide pole 70 engaged with the hook engaging recess 35b. Thereby, the striker S is clamped between the clamping arm 34 of the hook 30 and the bottom 24 a of the striker engaging recess 24 formed in the base member 22 without a gap. Thus, the hook 30 is held in the hook driving position state 30C.

  When the lock release member 60 formed on the rotation pole 50 is rotated in the clockwise direction by applying a pulling operation to the operation transmission member 90 from the hook driving position state 30C described above, the slide pole engagement member 52 is Together with this rotation, it rotates clockwise. As shown in FIG. 3, the slide pole engaging member 52 rotates to a position where the slide pole 70 is accommodated in the pole engaging recess 56 b. Then, the hook 30 is rotated clockwise by the urging of the spring member 80, and the slide pole 70 engaged with the hook 30 is accommodated in the pole engagement recess 56 b of the slide pole engagement member 52. Slide to the end. When the slide pole 70 slides to the position where it is accommodated in the pole engaging recess 56b of the slide pole engaging member 52, the hook-side sliding tip 74 and the hook engaging recess 35b are disengaged and the slide pole 70 is hooked again. The side sliding tip 74 is in a state of sliding on the sliding portion 35 a of the corner 35 of the hook 30. When the hook 30 is rotated to a position where the hook contact portion 38 contacts the side wall 29, the holding arm 34 that has closed the striker engagement recess 24 of the base member 22 is retracted, and the striker S is disengaged. Thus, the unlocked position state 30A is reached.

  According to the lock device 20 having such a configuration, a configuration in which the slide pole 70 which is one of the divided configuration poles 40 is slid and moved can be reduced, so that the configuration of supporting the shaft can be reduced, and the component cost and the processing cost can be suppressed. Can be achieved. Moreover, the slide pole 70 can be reduced in size by reducing the structure to support, and the space in the base member 22 can be suppressed to reduce the size of the lock device 20. The rotation pole 50 has a rotation range in which pressure angle contact is set, and the slide pole 70 is slid and moved so as to further rotate the hook 30 in the direction in which the striker S is sandwiched. Thereby, the rotation pole 50 and the slide pole 70 can be provided without using a complicated configuration. Further, the hook 30 can be further rotated in the direction in which the striker S is sandwiched stably by the pressure angle contact set on the rotation pole 50. Thereby, the reduction | decrease or prevention of the clearance gap in the engagement state of the locking device 20 and the striker S can be achieved further.

As mentioned above, although embodiment of this invention was described in Example 1, the locking device of this invention is not limited to this embodiment, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. It is.
For example, in the locking device 20 according to the first embodiment described above, the locking device 20 is configured on the vehicle seat 10 side as a movable member in the vehicle, and the striker S is configured on the vehicle body floor F side as a fixed member in the vehicle. It showed about things. However, the locking device in the present invention is not limited to this, and may be a locking device provided on the other of the movable member or the fixed member that engages with the striker disposed on one of the movable member or the fixed member. The locking device may be configured on the vehicle body floor side, and the striker may be configured on the vehicle seat.

  Moreover, the locking device 20 in the above-described first embodiment has been described with respect to the configuration of the vehicle seat 10 as a movable member in the vehicle. However, the locking device according to the present invention is not limited to this, and can be applied to movable members of various vehicles such as a trunk and a door as movable members in the vehicle.

  Moreover, the locking device 20 in the above-described first embodiment has been described with respect to the configuration of the vehicle body floor F as a fixing member in the vehicle. However, the locking device in the present invention is not limited to this, and any locking device may be used as long as the movable member in the vehicle is fixed to the fixed member in the vehicle. For example, the frame device may be a frame member as a vehicle structure. Alternatively, it may be arranged in a seat frame of an adjacent vehicle seat.

  In addition, as the configuration of the locking device 20 in the above-described first embodiment, a configuration in which the locking device 20 is provided with respect to the seat cushion 11 is shown. However, the locking device in the present invention is not limited to this, and for example, a locking device may be provided for the seat back of the vehicle seat.

  Further, the striker S of the locking device 20 according to the first embodiment described above is shown as having a configuration that is fixedly installed on the vehicle body floor. However, the striker of the locking device according to the present invention is not limited to this, and may be anything that fixes a movable member in the vehicle to a fixed member in the vehicle. For example, the striker is configured as a slide rail, The vehicle seat may be disposed so as to be slidable while being engaged with the striker. Thus, when the striker is configured to be slidable, the above-described vehicle seat can be added with a function such as a slide mechanism.

  Moreover, in the base member 22 of the locking device 20 in the above-described first embodiment, the base member 22 is illustrated as being installed on the seat cushion frame constituting the seat cushion 11. However, the base member of the locking device in the present invention is not limited to this, and the seat cushion frame itself can function as the base member.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 10B Storage attitude | position position 10A Seating attitude | position position 11 Seat cushion 12 Seat back 13 Headrest 14 Rotating shaft 20 Locking device 22 Base member 22a Base plate 22b Base plate 24 Striker engagement recessed part 24a Bottom part 24b Striker guide part 26 Slide groove 28a Rotation support hole 28b Rotation support hole 29 Side wall portion 30 Hook 30A Unlocked position state 30B Locked position state 30C Hook drive-in position state 31 Rotation support hole 32 Strike engagement portion 33 Strike detection arm 34 Clamping arm 35 Corner portion 35a Sliding part 35b Hook engaging recess 37 Spring locking part 38 Hook contact part 39 Hook hinge pin 40 Pole 48 Fitting part 48a Cylindrical part 48b Plane part 49 Pole hinge pin 50 Rotating pole 52 Slide pole Engaging member 54 Base 56 Engaging projection 56a Sliding part 56b Pole engaging recess 58 Fitting hole 60 Unlocking member 62 Spring locking part 64 Operation transmitting member connecting part 68 Fitting hole 70 Slide pole 72 Hook side engaging part 74 Hook-side sliding tip 76 Pole-side engaging portion 78 Pole-side sliding tip 79 Projection 80 Spring member 90 Operation transmission member F Vehicle body floor R Arc line S Strike θ Pressure angle

Claims (1)

In order to fix the movable member in the vehicle to the fixed member in the vehicle, a locking device provided on the other of the movable member or the fixed member that engages with a striker disposed on one of the movable member or the fixed member. There,
A base member formed with a recess that engages with the striker;
The base member is pivotally supported by a first shaft so that the striker rotates in conjunction with an engaging operation that enters a recess formed in the base member. A hook that can be in a locked position in which the striker that has entered the recess by a sandwiching arm that closes the opening can be sandwiched between the bottom of the recess; and
A spring member is disposed in the base member and is hooked to the hook in a tension spring coupling state, and when the hook is rotated to the locked position, the spring is biased by the biasing force of the spring member. And a pole that works to maintain the state,
The pole is pivotally supported on the base member by a second shaft so as to be pivotable, and a biasing force of the spring member is biased in a pivoting direction to hold the hook in a locked position; and A second pole disposed between the first pole and the hook so as to be slidable relative to the base member and capable of transmitting the operation of the first pole to the hook. Has been
A rotation range for pressure angle contact is set for the contact with the second pole as the first pole rotates, and the rotation range for pressure angle contact is hooked by the pole. The first pole is rotated by the biasing force of the spring member in the lock position state of the hook, and the second angle is brought into contact with the second pole by the pressure angle contact with the second pole. The hook is further rotated in a direction to sandwich the striker via the pole, and the striker is sandwiched between the hook holding arm of the hook and the bottom of the recess formed in the base member without gaps. Feature locking device.

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