JP2013095163A - Lock mechanism for swing door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock mechanism with which a manual opening/closing operation can be performed easily.SOLUTION: A lock mechanism comprises: a movable shaft 6 which is supported by a support means 2 and movable back and forth in a predetermined direction; a support proximal end 31 which is supported by the movable shaft and continued to a support body 3; a base part 1 which supports the support means; a support shaft 5 which is mounted in the base part and axially supports the proximal end rotatable; guide surfaces 12a, 12b which are configured by forming the edges of the base part in a predetermined shape so as to guide a trajectory of the movable shaft when rotating the support means by the support shaft; slide contact parts 32, 33 which are supported by the movable shaft so as to be brought into slide-contact with the guide surfaces; and an energizing means 7 which energizes the slide contact parts to the guide surfaces.

Description

  The present invention relates to a lock mechanism for a swing door provided on a loading platform such as a truck or a cargo box.

  A general door lock mechanism has a structure in which a part of the door is sandwiched between the hook and the lock member by locking the lock member to a hook projecting from the support column (patent) Reference 1). This type of locking mechanism is based on operating a support member that rotatably supports the locking member in order to lock the locking member to the hook. That is, the support member includes a pivot for supporting the locking member, a pivot shaft provided at an eccentric position with respect to the pivot shaft, and a handle extending from the pivot shaft. By doing so, the locking member is locked to the hook.

Japanese Utility Model Publication No. 2-333184

  In the above technique, the urging means is interposed between the handle of the support member and the rotating shaft in order to maintain the state where the locking member is locked to the hook, and the handle is resisted against this urging. By rotating the, the handle reversal is suppressed in a state beyond the position where the most urging force acts.

  However, the rotation of the handle must be operated to resist the urging force of the urging means as described above, and the urging force must be increased to maintain the locked state firmly. It was. That is, when the weight of the load loaded on the loading platform or packing box is large, especially when the weight of the load supported by the swing door is large, it must be sufficiently locked to prevent the lift door from opening. In order to prevent the locked state from being released, the urging force for maintaining the locked state has to be strengthened.

  Therefore, in order to strengthen the urging force, generally, the handle is enlarged, the distance between the fulcrum and the force point is increased, and the handle can be rotated against the urging with a small force. . However, there is not always enough space to install such a large locking device. If such space is not secured, it is unavoidable to install a small locking device. In this case, manual handle operation was not easy.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a lock mechanism that can be easily opened and closed manually.

  Therefore, the present invention provides a hook projecting from a support column that supports the sliding door, a locking member that can be locked to the hook, a support body that is provided continuously to the locking member, and the support. In a lock mechanism comprising a support means for mounting the main body on the support in a rotatable state, a movable shaft held by the support means and capable of moving back and forth in a predetermined direction, and supported by the movable shaft, A support portion base end that is continuous with the support portion body, a base portion that supports the support means, a support shaft that is attached to the base portion and pivotally supports the base end; and When the support means rotates, a guide surface having a predetermined end edge of the base so as to guide the track of the movable shaft, and a slidable contact portion supported by the movable shaft so as to slidably contact the guide surface And biasing means for biasing the sliding contact portion against the guide surface It is characterized in that to obtain.

  According to the above configuration, the support unit main body mounted on the support column changes its posture with the rotation of the support unit by the rotatable support unit supported by the base, and the posture of the support unit main body is changed. Is left to the movement of the movable shaft that supports the base end of the support portion in the advancing and retreating direction and the movement of the base end of the support portion along the guide surface. Therefore, the movable shaft is provided with a sliding contact portion, and the sliding contact portion is in sliding contact with the guide surface, whereby the advancing / retreating direction of the movable shaft is guided. By providing undulations (with a predetermined shape) on the guide surface, the movable range of the movable shaft is limited, and the movement of the movable shaft can be stopped at a predetermined position. As a result, in a state where the locking member is locked to the hook, the locked state can be maintained by stopping the movement of the movable shaft. In addition, since the movable shaft (sliding contact portion) is urged so as to slidably contact the guide surface by the urging means, even if the shape of the guide surface is complicated, it is moved along the guide surface. It is something that can be done.

  In the above invention, an engagement recess is provided for engaging the sliding contact portion supported by the movable shaft when the guide surface reaches near the limit of the range in which the support means can rotate. It can be configured.

  According to the above configuration, since the movable shaft (sliding contact portion) moves along the guide surface, the movable shaft (sliding contact portion) guided to the engaging recess is naturally engaged in the engaging recess. Will be. Here, the limit of the range in which the support means can rotate means the position where the locking member exclusively locks the hook, but the locking member releases the hook and reverses by the rotation of the support means. It also means a limit state when rotating in the direction, that is, a state where the locking member comes into contact with a column of the loading platform or a part of the sliding door. Therefore, when the movable shaft is engaged with the engaging recess when the locking member is in the state of locking the hook, the movable shaft engaged with the engaging recess can remove the engaging recess. Otherwise, the state of locking the hook cannot be released, and the locked state can be maintained firmly. In order for the movable shaft to move away from the engaging recess, it is necessary to move against the urging force of the urging means. However, depending on the depth or shape of the engaging recess, it is not necessary to use an artificial external force. It can be set as the state which cannot be removed from an entrance recess. When the movable shaft is engaged with the engagement recess when the engagement member is released from the engagement of the hook, the positions of the engagement member and the support means are also in the unlocked state by the engagement member. Can be fixed.

  Moreover, in the said invention, it is good also as a structure which has a mitigation part in which the urging | biasing force by the said urging means becomes weak when the said guide surface is located in the middle of the range which the said support means can rotate.

  According to the above configuration, the rotation of the support means can be temporarily stopped even at a position that is not the limit of the rotation of the support means. That is, when the movable shaft is engaged with the engagement recess only within the limit of the range in which the support means can be rotated, the locked state and the released state are stabilized, but in the case of stopping at the intermediate position. It is possible to eliminate the unstable state. In the case of such a configuration, for example, when the rotation range of the support means is 180 °, the support means (and the support portion main body are provided by providing a stop position by the relaxation portion in the middle of 90 °. And the locking member) can be relieved from vigorously rotating in the range of 180 °.

  Further, the present invention is a lock mechanism for the sliding door of each configuration described above, and is provided continuously with the operation base that is rotatably mounted by the support shaft, and the operation base. And an operation portion that projects outward from the base portion, and an action portion that is provided continuously with the operation base portion and that is slidable in contact with the base end of the support portion.

  According to the above configuration, the support shaft attached to the base portion supports the support means, and the action portion provided continuously to the operation base portion supported by the support shaft is the support shaft. It is possible to rotate around the axis. On the other hand, since the support portion base end is supported by the support means, the operation base portion can be brought into contact with the support portion base end by rotating around the axis of the support shaft. . Further, since the operation base is provided with an operation unit in addition to the above-described operation unit, the operation base can be rotated around the support shaft by applying an external force to the operation unit. Furthermore, the action part slides into contact with the base end of the support part by the rotation, and the movable part that supports the base end of the support part can be advanced and retracted in a predetermined direction. Therefore, for example, in a state where the support portion base end is engaged with the engaging recess, the action portion can move the movable shaft forward and backward by changing the position of the support portion base end, and the support portion base end can be moved back and forth. It is possible to move the rotation shaft so as to be detached from the above.

  Accordingly, the present invention provides a sliding door locking mechanism according to the invention having a configuration in which the engaging recess is provided on the guide surface as described above, and an operation base portion rotatably mounted by the support shaft, An operation part provided continuously on the operation base and projecting outward from the base; an action part provided continuously on the operation base and capable of sliding contact with the support base end; The action part is an action part that guides the support part base end in a direction to be removed from the engaging recess when the operation base part rotates around the axis of the support shaft. To do.

  According to the above configuration, since the action portion guides the support portion base end in a direction to be removed from the engaging recess, the operation portion provided on the operation base is operated at a position different from the action portion. By doing (turning the operating base), the support base end can be easily escaped from the engaging recess.

  Furthermore, the present invention provides a lock mechanism for a sliding door according to the above-mentioned invention, which is provided integrally with the support portion base end, and when the guide of the support portion base end by the action portion is started, the action portion It further comprises an abutment piece portion that abuts and is guided preferentially.

  According to the above configuration, since the support base is provided with the contact piece provided integrally with the support base, the action portion provided on the operation base is directly supported by the support base. When the base end cannot be contacted or when it is not easy to guide the support base end in a desired direction (for example, when the support base end is engaged in a deeply formed engaging recess) However, immediately after the guidance by the action part is started, the action part does not directly guide the support part base end, but by guiding the contact piece integral with this, the support part base end is desired as a result. It is possible to guide in the direction.

  In each of the above inventions, the support means is a support means having at least two parallel plate-like members, and having a long hole in the same direction and the same length in a predetermined direction of each plate-like member, and the movable shaft However, it is good also as a structure which is a movable axis | shaft penetrated by the long hole of each said plate-shaped member, and is arrange | positioned so that sliding is possible along this long hole.

  According to the above configuration, since the movable shaft is suspended by the parallel plate-like members, the support portion base end can be disposed in the middle of both plate-like members. Furthermore, since the advancing / retreating direction in which the movable part should move can be regulated by the long hole, when the desired advancing / retreating direction is linear, the linear advance / retreat can be enabled.

  Further, in each of the above inventions, the base may be arranged inside two parallel plate-like members of the support means, and the operation base may be arranged inside the base. .

  According to the above configuration, the two plate-like members constituting the support means are positioned on the outermost side of the other component members constituting the lock mechanism of the present invention. It can arrange | position in the state straddling the base and the operation base. Therefore, the support portion main body and the locking member rotate around the base and the like whose position does not change due to the rotation of the support means, and the rotation range can be expanded. In the middle of rotating within this range, the support base end is guided by the guide surface of the base end edge.

  In each of the above inventions, the long hole may be a long hole provided at a position where the position closest to the support shaft that supports the support means is offset from the axis of the support shaft.

  With the above configuration, the locked state is prevented from being released even when the sliding door is subjected to rapid vibration. That is, the state in which the movable shaft is closest to the support shaft is, for example, a state in which the base end of the support portion is engaged with the engagement recess, and the engagement member is engaged with the hook. This is the case. In such a case, the position of the support shaft is deviated from the position of the support portion base end even if the support portion base end receives vibration that resists biasing by the biasing means due to an external impact. In this case, the support shaft cannot be easily rotated, and the engagement state of the support portion base end can be maintained.

  Further, in each of the above inventions, the long hole is elongated from the support shaft side supporting the support means toward the free end side, and the longitudinal direction thereof is at a predetermined angle with respect to the radial direction from the support shaft. It may be configured to have an oblique shape.

  According to the above configuration, for example, when the support member stands in the vertical direction, when the locking member locks the hook, the longitudinal direction of the long hole is slightly inclined from the vertical direction. Even if a simple vertical vibration is caused by an impact from the outside, the base end of the support portion can be prevented from being easily detached from the engaging recess.

  According to the present invention, by rotating the support means about the axis of the support shaft of the base, the support portion base end pivotally supported by the movable shaft of the support means is guided, so the support means is manually rotated. By doing so, the position of the support base end can be guided to an accurate state, and further, the support base end can be temporarily stopped by the shape of the guide surface for guiding the support base end. Therefore, the opening and closing of the sliding door can be easily operated manually.

It is explanatory drawing which shows the outline of embodiment of this invention. It is a perspective view of the embodiment of the present invention. It is III-III sectional drawing. It is explanatory drawing which shows the operation | movement aspect of embodiment. It is explanatory drawing which shows the operation | movement aspect of embodiment. It is explanatory drawing which shows the modification of embodiment. It is explanatory drawing which shows the modification of embodiment. It is explanatory drawing which shows the modification of embodiment. It is explanatory drawing which shows the operation | movement aspect of a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an outline of the present embodiment. As shown in this figure, this embodiment is composed of a support means 2 that is rotatably attached to the base 1, and the support member 2 includes a support portion main body 3 and a latch that is continuous with the tip thereof. The member 4 is supported. The locking member 4 is formed in an annular shape so that the locking member 4 can be locked to a hook F provided on a support column or the like of the cargo bed. When the support means 2 rotates, the annular locking member 4 is hooked. F lock and release are possible.

  The base 1 is fixed to the surface of the same column as the hook F. In the present embodiment, the base 1 is composed of two plate-like members 11a and 11b, and the guide surfaces 12a and 12b are formed by the edges of the plate-like members 11a and 11b. Is configured. The base 1 is provided with through holes 13a and 13b so that the support shaft 5 can be mounted. The guide surfaces 12a and 12b are formed so as to change the distance from the center of the through holes 13a and 13b with reference to the arcuate surface. That is, two engaging recesses 14a, 14b, 15a, 15b and one flat portion 16a, 16b are formed, and a portion adjacent to the flat portions 16a, 16b is formed from the center of the through holes 13a, 13b. The distance is formed to be long.

  The main body portion of the support means 2 is provided in a U-shape with two plate-like members 21 and 22 and an intermediate member 23 that is integrally configured so as to keep them parallel. The plate-like members 21 and 22 constituting the main body portion are provided with long holes 24 and 25 that are elongated in the same direction, and the intermediate member 23 is provided with a through hole 26 through which the support body 3 can be inserted. It has been. A movable shaft 6 can be inserted into the long holes 24 and 25, and a support base end 31 that is continuous with the distal end of the support body 3 is pivotally supported by the movable shaft 6. Further, the plate-like members 21 and 22 constituting the support means 2 are provided with through holes 27 and 28 for mounting on the base 1.

  In addition, annular sliding contact portions 32 and 33 are inserted into the same movable shaft 6 at both ends in the axial direction of the support portion base end 31 so as to be rotatable. Further, a compression spring 7 as an urging means is interposed between the intermediate member 23 constituting the main body portion of the support means 2 and the support portion base end 31 to move the support portion base end 31 away from the intermediate member 23. Energized in the direction. The compression spring 7 is provided in a state of being inserted into the support portion main body 3 extending inside the support means 2 and cannot be detached from the support means 2.

  Since it is the above structure, the two plate-shaped members 21 and 22 which comprise the said support means 2 are arrange | positioned on the outer side of the two plate-like members 11a and 11b which comprise the base 1, and the support shaft 5 The support means 2 is provided so as to be rotatable about the support shaft 5 together with the support body 3 and the forming member 3.

  In the present embodiment, the operating means 8 can be pivotally supported on the support shaft 5 in a rotatable manner. The operation means 8 includes a cylindrical operation base portion 81, an operation portion 82 continuous with the operation base portion 81, and an action portion 83. The operation base 81 is configured to have a length matching the distance between the two plate-like members 11a and 11b of the base 1 so that the operation unit 82 is outward from the base 1. It is formed to protrude. The action portion 83 is configured by a plate-like member having a curved surface, and is provided so as to contact the support portion base end 31 when the operation base portion 81 is attached to the base portion 1 together with the support means 2. Yes.

  Since the present embodiment is configured as described above, by attaching the support means 2 and the operation means 8 to the base 1, as shown in FIG. The support shaft 5 is inserted into the support shaft 5 so as to be rotatable. The annular sliding contact portions 32 and 33 that are pivotally supported by the movable shaft 6 abut on the surfaces of the guide surfaces 12 a and 12 b of the base 1, and the support means 2 rotates around the support shaft 5. Then, the surfaces of the guide surfaces 12a and 12b of the base 1 are brought into sliding contact with each other. By the way, the support base end 31 supported by the movable shaft 6 is urged by the compression spring 7 as the urging means, so this urging force urges the movable shaft 6, When the external force against the force does not act, the movable shaft 6 is located at the base ends of the long holes 24 and 25. However, the movable shaft 6 can move within the range of the long holes 24 and 25 when an external force that resists the biasing acts.

  Therefore, when the sliding contact portions 32 and 33 are engaged with the engaging recesses 14a and 14b (FIG. 1) that are most cut out of the guide surfaces 12a and 12b, the movable shaft 6 is urged ( The compression spring 7 is biased to be positioned at the base ends of the long holes 24 and 25. When the sliding contact portions 32 and 33 are removed from the engaging recesses 14 a and 14 b, the movable shaft 6 is moved against the urging force by the urging means (compression spring) 7. , 25 is moved along the longitudinal direction (the long holes 24, 25 are advanced in the opposite direction), and the position thereof is changed. Further, when the sliding contact portions 32 and 33 are again engaged with the same engaging recesses 14 a and 15 b or other engaging recesses 15 a and 15 b, the engaging recesses (compression springs) 7 are biased by the biasing recesses (compression springs) 7. 14a, 14b, 15a, 15b (FIG. 1) is engaged, and the movable shaft 6 moves (retreats) along the long holes 24, 25 according to the engagement depth.

  Such advance and retreat of the movable shaft 6 limits the positions (states) of the support portion main body 3 and the locking member 4 at the tip thereof due to fluctuations in the positions of the sliding contact portions 32 and 33 along the guide surfaces 12a and 12b. Is. The long holes 24 and 25 are provided long from the support shaft side of the support means (side supported by the support shaft 5) to the free end side (side farthest from the support shaft 5). The longitudinal direction is inclined with respect to a straight line extending radially from the axis of the support shaft 5. Then, as shown in the drawing, the longitudinal direction is set to a direction in which the gap between the support shaft 5 and the support column P is gradually reduced from the support shaft 5 toward the tip in the state where the locking member 4 locks the hook F. ing. The inclined shafts 24 and 25 make it easy to raise the movable shaft 6. That is, the shape of the cutout portion for forming the engaging recesses 14a and 14b is set so as to greatly enter beyond the virtual straight line connecting the boundary portion between the adjacent guide surfaces 12a and 12b and the axis of the support shaft 5. Therefore, in order to remove the sliding contact portions 32 and 33 from the engaging recesses 14a and 14b, it is preferable to move the sliding contact portions 32 and 33 in the direction of approaching the column P. The longitudinal directions of the long holes 24 and 25 are inclined so as to guide the movable shaft 6 in any direction.

  Since this embodiment is configured as described above, the following operation mode is provided. That is, FIG. 3 shows a state where the support base end 31 (substantially the slidable contact portions 32, 33) is engaged with the engaging recess (14a, 14b). As shown in this figure, in a state where the support base end 31 is engaged in the engagement recess (14a, 14b), the support means 2 cannot rotate around the support shaft 5, and the hook F is locked. It is in a state that can be done. That is, the support means 2 that supports the support portion main body 3 and the locking member 4 is mounted so as to be rotatable about the support shaft 5 as a whole, but the support portion base end is provided in the engaging recess (14a, 14b). When the 31 is engaged, the other guide surfaces (12a, 12b) 12b of the base 1 are prevented from rotating. Particularly, the support base end 31 is strongly urged by the urging means (compression spring) 7, and as a result, the movable shaft 6 is strongly urged in the direction of the long holes 24 and 25. Thus, the slidable contact portions 32 and 33 cannot be detached from the engaging recesses (14a, 14b), and the support means 2 can be restricted from being turned upright. In addition, when the support part base end 31 rises against the urging force of the urging means (compression spring) 7, it can be detached from the engaging recesses (14 a) 14 b, but without external force. Such a rise is never caused by vibration alone. In particular, as shown in the figure, the support portion base end 31 is provided so that the shaft center of the support portion base end 31 is biased to the outside (position away from the installed column P or the like) with respect to the support shaft 5. Even if an external force acting in the rotational direction acts on the shaft center 31, it does not act as an external force in the rotational direction on the support shaft 5. Thereby, even when receiving a sudden impact from the inside of the sliding door D and receiving an external force that causes the locking member 4 to move away from the hook F, the locking state of the locking member 4 is prevented from being released. It is.

  Next, when the locked state is released by an external force, it can be easily performed by operating the operating means 8 as shown in FIGS. That is, by pressing the operating portion 82 of the operating means 8 toward the column P or the like P (FIG. 3), the operating base 81 is rotated around the axis of the support shaft 5, and the operating portion 83 is supported by this rotation. The part base end 31 is pushed up (see FIG. 4A). Further, when the support portion base end 31 is pushed up by the action portion 83, the support portion base end 31 (sliding contact portions 32, 33) is sufficiently removed from the insertion recesses (14a, 14b) (FIG. 4 ( b)). Then, when the support base end 31 moves in the rotation direction of the action portion 83 (the support means 2 rotates), the support base end 31 (substantially the slidable contact portion (32, 33)) Then, it is moved to the guide surface (12a,) 12b different from the insertion recess (14a,) 14b (see FIG. 4C). Thus, the urging means (compression spring) 7 is greatly compressed by the sliding contact portions (32, 33) being guided by the guide surfaces (12a, 12b) adjacent to the engaging recesses (14a, 14b). The guide surface (12a,) 12b is strongly biased, and is guided along the shape of the guide surface (12a,) 12b with the biasing force. Then, since the guided direction is a direction rotating around the axis of the support shaft 5, as a result, the entire support means 2 rotates around the support shaft 5 (FIG. 5A). To (c)).

  Of the guide surfaces (12a,) 12b, the vicinity of the engaging recesses (14a,) 14b is formed such that the distance from the support shaft 5 is large and then gradually decreases, and in the horizontal direction of the support shaft 5 The straight portions (16a,) 16b are formed (see FIG. 5B). When the slidable contact portions 32, 33 are guided to the straight portions (16a, 16b), the support portion base end 31 comes close to the support shaft 5. ) The urging force by 7 acts weakly (relaxes) (thus, the straight line portion is referred to as a relaxation portion). And when the support part base end 31 (sliding contact part 32, 33) reaches | attains a relaxation part, in order to cross the relaxation part, the external force which resists further the urging | biasing means (compression spring) 7 is required. Therefore, when the support portion base end 31 (sliding contact portions 32, 33) reaches the relaxation portion, the rotation of the support means 2 is temporarily stopped.

  By the way, in order to rotate the entire support means 2 from the locked state to the opposite direction (hanging state), the support base end 31 (sliding contact portion 32, 33) is further moved to the guide surface (12a). ,) 12b. To do so, the entire support means 2 is rotated around the axis of the support shaft 5, or the locking member 4 is pulled to urge the compression means (compression spring). It is sufficient to apply an external force in a direction against the urging of 7). Even in the state where the support means 2 is suspended, the support base end 31 (sliding contact portion 32, 33) is engaged with another engagement recess (15a, 15b) 15b. The rotation can be stopped (see FIG. 5C).

  In order to re-engage from this state, the engaging member 4 is pulled downward to be removed from the engaging recess (15a,) 15b, and thereafter the guide surface (12a,) 12b. This is done by moving the support base 31 (sliding contact portions 32, 33). That is, by moving the support base end 31 (sliding contact portion 32, 33) along the guide surface (12a, 12b) (turning the support means 2) in this way, the opposite is finally achieved. The sliding contact portions 32 and 33 can be engaged with the side (upper) engagement recesses (14a, 14b). That is, when the sliding contact portions 32 and 33 reach the engaging recesses (14a, 14b) (see FIG. 4 (a)), the biasing means (compression spring) 7 is biased against the support base end 31. The slidable contact portions 32 and 33 are forcibly engaged in the engaging recesses (14a, 14b).

  As described above, the sliding contact portions 32, 33 detached from the upper engaging recess (14a, 14b) can easily move along the guide surface (12a, 12b). This is because the difference in level of the undulation is gently formed, or the boundary difference between the undulating parts is formed slowly.

  Further, the two plate-like members (21, 22) constituting the support means 2 are located outside the plate-like members (11a, 11b) constituting the base 1, and the plate-like members of the support means 2 are included. Since (21,) 22 is arranged on the outermost side, when the supporting means 2 rotates, each part constituting the supporting means 2 and the member supported by the supporting means 2 are separated from the base 1 The outer side is rotated, and the range from the standing state to the hanging state can be changed without any trouble.

  Furthermore, since the operation unit 8 is provided so as to be rotatable with respect to the support shaft 5, the operation unit 8 is not forced to rotate. However, when the support means 2 moves from the suspended state to the upright state (from the unlocked state to the locked state), the operating portion 83 comes into sliding contact with the support portion base end 31, and thereafter, the support portion base end 31 When the operating portion 83 is rotated and the support means 2 is in the upright state (locking state), the operation means 8 is in the initial state (see FIG. 3).

  The embodiment of the present invention is as described above, but the present invention is not limited to the above-described embodiment, and can be various forms. For example, as shown in FIG. 6, the operating means 8 is not provided, but a gripping portion 9 is provided near the boundary between the support portion main body 3 and the locking member 4, and the support portion main body 3 and the engagement portion are held by the gripping portion 9. It is good also as a structure which cancels | releases a latching state by raising the stop member 4. FIG. In this case, after raising the gripping part 9, the support part base end 31 (sliding contact parts 32, 33) is escaped from the engaging recesses 14 a, 14 b and brought into contact with the guide surfaces 12 a, 12 b of the base 1. The support means 2 easily shifts to the open state.

  Further, as shown in FIG. 7, in order to facilitate the contact between the operating portion 83 of the operating means 8 and the support portion base end 31 in the above-described embodiment, it protrudes from the support portion base end 31 toward the operation portion 83. A contact piece 34 may be provided. In such a configuration, the support base end 31 (sliding contact portions 32, 33) is allowed to escape from the engaging recesses 14a, 14b, and the support base end 31 (sliding contact portions 32, 33) is formed on the guide surfaces 12a, 12b. ) To assist the guide of the support base end 31 by the operating portion 83. That is, when the longitudinal direction of the long holes 24 and 25 provided in the support means 2 is provided obliquely with respect to the vertical direction, the movable shaft 6 (support portion base end 31) is moved along the oblique direction. It is provided for this purpose. That is, when it is difficult to raise the support portion base end 31 along the longitudinal direction of the long holes 24 and 25 only with the orbit of the operation portion 83, the abutment protrudes in a direction different from the arc-shaped operation portion 83. By providing the piece 34, the direction is changed.

  Furthermore, the operation part 82 of the operation means 8 may be configured to be long. In this case, when the operation unit 82 is simply configured to be long, it protrudes greatly outward from the entire apparatus. As a structure for eliminating this, for example, as shown in FIG. 8, the operation means 108 can be composed of two components, a portion mainly composed of an operation base portion 181 and an action portion 183, and an operation portion 182. . That is, the base portion 184 of the operation portion 182 is configured to be supported by the protruding portions 185 and 186 that protrude from the operation base portion 181. At this time, through holes are formed in the projecting portions 185 and 186, and a support shaft 187 inserted therethrough is provided. On the other hand, a base portion 184 of the operation portion 182 is provided with a long hole portion 188. The support shaft 187 is rotatably supported. Moreover, the base portion 184 of the operation portion 182 is supported close to the operation base portion 181, and when the support shaft 187 exists at a predetermined position of the long hole portion 188, the outer surface of the base portion 184 is the operation base portion 181. It arrange | positions so that it may contact | abut.

  According to the operation means 108 configured as described above, as shown in FIG. 9, in the state where the operation portion 182 is erected, the support shaft 187 is caused to move to the rear end side of the long hole portion 188 (operation portion) by its own weight. It will be located on the front end side of 182 (see FIG. 9A). On the other hand, in a state in which the operation portion 182 is suspended, the support shaft 187 is positioned at the distal end portion (the base side of the operation portion 182) of the long hole portion 188 (see FIG. 9D). By the way, when the support shaft 187 is positioned at the distal end of the long hole portion 188 (FIG. 9D), the outer surface of the base portion 184 does not come into contact with the outer surface of the operation base portion 181 and can rotate freely. However, when the support shaft 187 is located on the rear end side of the long hole portion 188 (FIG. 9A), both external surfaces come into contact with each other during the rotation.

  Therefore, in order to change the state of the operating portion 183 by the operating means 108 having the above configuration, first, the operating portion 182 is changed from the upright state (FIG. 9A) without changing the position of the support shaft 187. The operation unit 182 is tilted. When the operation unit 182 is tilted to a predetermined angle, the outer surface of the base 184 of the operation unit 182 comes into contact with the outer surface of the operation base 181 (see FIG. 9B). In this state, the operation unit 182 is in a state where it cannot be further tilted unless the operation base 181 rotates. Therefore, by further tilting the operation portion 182, the operation base portion 181 rotates while maintaining the above contact state, and as a result, the state of the operation portion 183 changes (FIG. 9C). reference). Thus, by sufficiently changing the state of the action portion 183, the support portion base end 31 can be moved in a predetermined direction as described above (see FIG. 4). After the support portion base end 31 is sufficiently moved, the support means 2 rotates about the support shaft 5, so that the operation portion 182 is in a freely rotatable state (FIG. 9D). Alternatively, by being in this rotatable state, it is possible to prevent the movement of the support means 2 from being hindered when the support means 2 is greatly rotated. Since the operation unit 182 can freely rotate while tilting from the upright state (FIG. 9A) to the contact state (FIG. 9B), the above-described upright state is maintained. Alternatively, the operation unit 182 may be configured to be hooked on the support unit base end 31 or may be configured to be temporarily magnetically attached to the support unit 2 by using a magnet or the like.

DESCRIPTION OF SYMBOLS 1 Base 2 Support means 3 Support part main body 4 Locking member 5 Support shaft 6 Movable shaft 7 Energizing means (compression spring)
8, 108 Operation means 9 Grasping part 11a, 11b Plate-like member 12a, 12b Guide surface 13a, 13b Through hole 14a, 14b, 15a, 15b Engaging recess 16a, 16b Plane part (relaxation part)
21, 22 Plate member 23 Intermediate member 24, 25 Long hole 26 Through hole 31 Support portion base end 32, 33 Sliding contact portion 34 Contact piece portion 81, 181 Operation base portion 82, 182 Operation portion 83, 183 Action portion 184 Base part 185, 186 of operation part Protruding part 187 Support shaft 188 Long hole part D Sliding door F Hook P Post etc.

Claims (10)

A hook projecting from a support column that supports the sliding door, a locking member that can be locked to the hook, a support body that is provided continuously to the locking member, and the support body can be rotated. In a locking mechanism provided with a supporting means to be mounted on the column in a state of
A movable shaft held by the support means and capable of moving back and forth in a predetermined direction, a support portion base end supported by the movable shaft and continuing to the support portion main body, a base portion for supporting the support means, A support shaft that is mounted on the base and pivotally supports the support means, and when the support means is rotated by the support shaft, an edge of the base is predetermined so as to guide the track of the movable shaft. A guide surface having a shape; a slide contact portion supported by the movable shaft so as to be in sliding contact with the guide surface; and biasing means for biasing the slide contact portion against the guide surface. The lock mechanism of the sliding door. The guide surface is a guide surface provided with an engaging recess for engaging the sliding contact portion supported by the movable shaft when reaching the limit of the range in which the support means can rotate. The locking mechanism for a swing door according to claim 1. 3. The sliding door according to claim 1, wherein the guide surface is a guide surface having a relaxation portion in which a biasing force by the biasing unit is weakened when the support unit is positioned in a middle of a range in which the support unit can rotate. Locking mechanism. A locking mechanism for a sliding door according to any one of claims 1 to 3, wherein the operating base is rotatably mounted by the support shaft, the operating base is provided continuously to the operating base, and A lock mechanism for a sliding door, further comprising: an operation portion protruding outward from the base portion; and an action portion that is provided continuously with the operation base portion and is capable of sliding contact with the base end of the support portion. 4. The locking mechanism for a sliding door according to claim 2 or 3, wherein the operating base is rotatably mounted by the support shaft, and is continuously provided on the operating base, and is provided outside the base. And an operating portion that is provided continuously with the operating base and is slidably contactable with the base end of the supporting portion, and the operating base is supported by the operating base. A locking mechanism for a sliding door, wherein the locking mechanism is an action part that guides the base end of the support part in a direction of detaching from the engaging recess when rotating around the axis of the shaft. 6. The locking mechanism for a sliding door according to claim 5, wherein the locking mechanism is provided integrally with the support base end, and the action portion abuts when the guide of the support base end by the action portion is started. A lock mechanism for a sliding door, further comprising a contact piece that is guided with priority. The support means is a support means having at least two parallel plate-like members, and having a long hole of the same direction and the same length in a predetermined direction of each plate-like member, and the movable shaft is each plate-like member The sliding door lock mechanism according to any one of claims 1 to 6, wherein the locking mechanism is a movable shaft that is inserted into a long hole of the member and is slidably disposed along the long hole. The said base is arrange | positioned inside the two parallel plate-shaped members of the said support means, The said base for operation is arrange | positioned inside the said base, The Claim 7 characterized by the above-mentioned. Locking mechanism for the sliding door. The said long hole is a long hole provided in the position where the position nearest to the support shaft which supports the said support means is deviated from the axial center of the said support shaft. The lock mechanism of the door. The long hole is elongated from the support shaft side that supports the support means toward the free end side, and the longitudinal direction thereof is inclined at a predetermined angle with respect to the radial direction from the support shaft. 10. The lock mechanism for a swing door according to claim 7, wherein the lock mechanism is a long hole.

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