JP2011094440A - Lock device and door using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability and appearance while adopting a lock device of high-strength. <P>SOLUTION: The lock device includes a striker 2 which is brought into engagement with or disengaged from an engagement-receiving part 8c in a closed-door state, and a door can be retained in the closed-door state by bringing the striker into engagement with the receiving part when the door is pushed from the opening to the closing direction. The engagement is released and the door can be rotated in the opening direction by pushing the door in the same direction again. The lock device is provided with: a case 1 supporting the striker 2; an energizing means S1 energizing the striker in the direction to project from the case; a switching member 3 which is switched from the normal non-operating position without applying any load to the striker to the operating position of being rotated by stress produced when hitting a body side abutting part 8e, and which moves the striker against the energizing force; a spring means which returns the switching member to the non-operating position; and an engagement mechanism which alternately varies between the engagement mode for retaining the striker in a state to be moved against the energizing force and the non-engagement mode for releasing the retention every time the switching member is switched between the non-operating position and the operating position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lock device that engages so as to keep a door closed by a push operation on the door and releases the engagement by a next push operation, and a door using the same. Note that the target door is rotated by using one end side as a fulcrum with respect to the main body side opening (this one end side includes a configuration that moves along a guide rail or the like as in the embodiment). It is a type that can be switched between a closed state that closes the door and an open state that opens. Preferably, it is a foldable door (folding door) that is used for a closet, a partition, or the like and is movable while being folded and unfolded.

  For example, in a conventional folding door, the doors are held in a closed state by a locking device, and a hinge connecting the doors has a biasing means, and the biasing force causes the engagement in the closed state. In some cases, the holding action is supplemented. Moreover, in the conventional structure, since the handle for pulling the door in the opening direction is required together with the engagement of the lock device, the appearance is worsened by the handle on the design surface side of the door. Patent Document 1 discloses a countermeasure example. The structural feature is that the appearance is improved by providing a handle recess provided on the door that is difficult to see in relation to a hinge as a handle used during operation. In addition, in the publicly known technology, as a kind of handle, it is immersed in the door surface with one push and pushed again in this state to make a retractable handle that protrudes on the door surface, suppressing the flapping of the door in the closed state As a means for this, there is a configuration in which a catch member is provided for being accommodated in the rail.

JP 2008-240377 A

  In the structure of Patent Document 1, the appearance can be improved as the handle recess is made smaller, but the operability is degraded when the recess is made smaller. In addition, with the retractable handle, the door surface cannot be made completely flat, and the operation is complicated accordingly. In the structure using the catch member, the mounting accuracy of the catch member is bothered and the operability is complicated accordingly. Note that a conventional locking device includes a push-push locking mechanism that engages and holds the door on the main body side by the first pushing operation and releases the engagement by the next pushing operation (for example, Japanese Patent Laid-Open No. 2006-214105). Disclosure structure). However, in this structure, a lock device and a rod-like engagement / disengagement member (referred to as a striker) that engages and disengages with the lock device are indispensable. It becomes difficult to apply when it becomes large and heavy, or it becomes a folding type.

  In view of the above problems, therefore, the present inventors have engaged in and disengaged from the latch receiving portion provided on the opening side of the main body in the closed state, that is, a high-strength lock that engages and disengages. As an apparatus, the invention described in Japanese Patent Application No. 2009-19130 has been devised. In this lock device, in particular, when the door is pushed from the open state, the door is engaged and held, and when the door is pushed again from the closed state, the engagement is released, and then the door is rotated by a biasing force. An object of the present invention is to further improve it and reduce the number of members to reduce cost and size.

  In order to achieve the above object, the present invention, when specified with reference to the form and the modification, is a closed state in which the opening is closed by being pivoted about one end side with respect to the opening on the main body side, and an open state in which the opening is opened. The striker is used for the door 9B that is normally urged in the opening direction and is engaged with and disengaged from a locking receiving portion 8c (for example, a groove in the guide rail) provided in the main body in the closed state. 2 and when the door is pushed in the closing direction from the open and the pushing force is released, the striker can be engaged with the receiving portion to be held in the closed state, and the door is pushed again in the same direction. A lock device that can be rotated in the opening direction from the closed state by releasing the engagement, and a case 1 that is disposed on the door 9 and supports the striker 2 movably, and the striker 2 Protrudes from the case 1 Urging means S1 urging in the direction, and stress when hitting the abutting portion 8e provided on the main body side from a normal non-operating position that is pivotally supported by the case and does not apply a load to the striker A switching member 3 that is rotated and switched to the operating position to move the striker 2 against the urging force of the urging means; and a spring means S2 that returns the switching member from the operating position to the non-operating position; Each time the switching member is switched from the non-operating position to the operating position, it is possible to alternately change between a locking mode in which the striker 2 is moved against the biasing force and a non-locking mode in which the holding is released. It is characterized by comprising a locking mechanism 4 or 4A.

  In the present invention described above, the locking mechanism is referred to as push-push, lift-out latch, push lock / push open, and the like. When pressed for the first time, it becomes a locking state (locks in a state where the striker is moved), and when pressed next, it becomes a non-locking mode (releases the locking of the striker), that is, it is locked via a switching member. The mode and the non-locking mode are alternately switched. In addition, the receiving part is formed in a substantially concave shape in the corresponding part on the main body side, or is provided in the main body side opening as in the form and uses a concave groove of a guide rail for rotating and moving the door. The structure to do may be sufficient. In addition, the front end (upper engagement portion) of the striker preferably has a shape in the door opening / closing direction, preferably the front side (side in the door opening direction) is a substantially vertical surface for locking, and the rear side (side in the door closing direction). Is formed on the inclined surface for release.

The present invention as described above is more preferably embodied as described in claims 2-7. (1) As shown in FIGS. 1 to 9, the locking mechanism 4 is attached to the case 1 and can receive the corresponding portion of the striker 2 inside, and the case A sliding body 41 with a locking portion 42 slidably disposed on the body, a spring member biasing the sliding body in a direction protruding from the housing, and a cam groove provided in the sliding body 43 and a latch having a pin 44 for tracing the cam groove (Claim 2).
(2) As illustrated in FIGS. 11 and 12, the locking mechanism 4A includes a cam groove 45 provided on the striker 2A side and a pin 46 provided on the case 1 side and tracing the cam groove. (Claim 3).

(3) The receiving portion 8c has a substantially reverse concave cross section, and the striker releases the pushing force from the opening to the closing direction on the door after the switching member 3 is rotated from the non-operation position to the operation position. Then, the locking mechanism is switched from the locking mode to the non-locking mode, and the front end (upper end) is urged together with the door while being pressed from the reverse concave lower end surface of the receiving portion to the reverse concave inner edge. It is the structure which can be engaged with the hollow of a reverse concave shape by moving by (Claim 4).
(4) It is the structure which has the base 5 which supports the said case 1 so that a movement to an up-down direction is possible, and the height adjustment means 6 which changes the height of the said case 1 with respect to the said base 5 (claim). Item 5).

(5) It has a fixing bracket 55A or 55 that is fixed to the door and pivotally supports the case 1 so that the case 1 can be overturned, and an urging member S3 that urges the case 1 to a normal position of the fixing bracket. In a state in which the striker is engaged with the receiving portion 8c, the case 1 can be overturned to release the engagement when it receives a predetermined amount of vibration (Claim 6).
(6) On the other hand, Claim 7 specifies the door using each of the above locking devices. As a more preferable door structure, as shown in the embodiment, the door is a folding door that can move while folding and unfolding along the guide rail.

  According to the first aspect of the present invention, while adopting a high-strength lock structure having a striker that engages and disengages, that is, engages and disengages, the striker is attached to the striker on the main body side in the closed state. With a simple structure including a biasing means, a switching member and a spring means attached thereto, and a locking mechanism, the door is switched from the open state to the closed state by a pushing operation on the door, or the engagement is released by the next pushing operation. Since the door is switched to the open state, the operability can be improved, and the appearance can be improved without using a conventional handle.

  In the invention of claim 2, since an existing latch having a housing, a sliding body, a spring member, a cam groove and a pin (for example, a so-called lift latch) is used as a locking mechanism, it is easy to assemble and versatility. Is excellent. On the other hand, in the invention of claim 3, since the locking mechanism includes the cam groove on the striker side and the pin on the case side, simplification and cost reduction can be further achieved.

  In the invention of claim 4, when the striker faces the receiving part, it is moved by the urging force and protrudes into the reverse concave shape of the receiving part and engages and generates a repelling sound or impact sound proportional to the urging force. (Upper end) Engage with the reverse concave bottom edge of the receiving part while pressing against the inner edge of the reverse concave. Can be reduced.

  In the fifth aspect of the present invention, for example, the height can be finely adjusted by the height adjusting means with respect to the base even after the lock device is attached to the door, so that the accuracy of attachment to the door can be eased.

  In the invention of claim 6, for example, in an emergency such as when a child is trapped inside the main body side opening (opening / closing room or the like) that is opened and closed by the door, the door is struck from the rear surface of the door, etc. Because the locking device forcibly falls down against the urging force against the urging force and can be disengaged simply by applying vibrations of an abnormal condition (such as when a person is trapped in the space behind the door) ) Can be opened forcibly to improve reliability and safety.

  In invention of Claim 7, the effect of Claims 1-6 can be comprised as a door. If the door is a foldable door that can move while folding and unfolding the other end of the door along the groove of the guide rail or the guide groove, as shown in the form, the door can be Guide rails and guide grooves can be used.

FIG. 1 shows a folding door with a locking device to which the present invention is applied, (a) is a schematic perspective view seen from the design surface side of the door, and (b) is a schematic perspective view seen from the back side. is there. FIG. 2 is a schematic perspective view showing a part of the hinge broken away. FIGS. 3A and 3B are external views showing the form of the locking device as seen from the front and the back. FIG. 4 (a) is a state diagram when the lock device projects the striker from the case, and FIG. 4 (b) is a state diagram when the height of the main part is further changed by the height adjusting means. FIG. 5 is a schematic exploded perspective view showing the overall configuration of the locking device. FIGS. 6A and 6B are schematic operation diagrams showing the main part and the latch of the locking device assuming a state in which the door is pushed in the closing direction from the opening. FIGS. 7A and 7B are schematic operation diagrams showing a main part and a latch of the locking device assuming a state in which the pushing force is released after the door is further pushed in the closing direction. FIGS. 8A and 8B are schematic operation diagrams showing the main part of the locking device assuming that the door is further held in the closed state by the locking device from the state of FIG. 9 (a) and 9 (b) are schematic diagrams showing an operation procedure for disengaging (forcibly removing structure) in an emergency when a child or the like is confined with the door closed. FIGS. 10A to 10C are schematic views showing a restoring operation after forcibly removing. FIG. 11 is a view showing a modified locking device corresponding to FIG. FIGS. 12A to 12D are schematic views for explaining a locking mechanism when the locking device of FIG. 11 is used.

  Hereinafter, embodiments and modifications to which the present invention is applied will be described with reference to the drawings. In this description, the structure of the main body side opening and the door, the structure of the hinge, the structure of the locking device, the assembly procedure, the height adjustment operation, the main operation of the locking device, the forced removal structure, and the modification will be described in detail.

The lock device RE in the form (configuration of the main body side opening and the door), as illustrated in FIG. 1, is opened and closed with the main body side opening being closed by being rotated with respect to the main body side opening as one fulcrum. It is used for the door 9B or the door 9A that is switched to the open state. In FIG. 1, as an example, the opening of the main body 8 is partitioned by left and right vertical members 8a and upper and lower horizontal members 8b. For example, the opening is a portion that opens and closes or communicates a shared space such as a living room or a corridor and a closed space such as a walk-in closet or a storage box via the folding doors 9A and 9B. A guide rail 8c having a substantially reverse concave cross section is attached to the inner surface of the upper cross member 8b, and a concave groove of the guide rail 8c extends in the longitudinal direction. A guide groove 8d is formed along the longitudinal direction on the inner surface of the lower cross member 8b. The concave groove of the guide rail 8c is used as a receiving portion of the present invention. For this reason, the code | symbol 8c may be described as the receiving part 8c. Further, on the inner surface of the upper cross member 8b, an abutting portion 8e is provided substantially vertically below the guide rail 8c on the side that becomes a closed space such as a walk-in closet or a container. The abutting portion 8e is provided corresponding to the locking device RE and prevents the door 9B from moving to the closed space side when the switching member 3 constituting the locking device hits. In this example, the abutting portion 8e is constituted by a substantially T-shaped push-in preventing stopper formed of metal or the like.

  The doors 9A and 9B are formed on a flat surface as shown in FIG. 1 (a) on the front surface (design surface) side, that is, the side arranged in the above-mentioned common space, and there are no handles or recesses for handling. It is shaped into a designed shape. On the other hand, the rear surfaces of the doors 9A and 9B, that is, the opposite ends of the doors on the closed space side can be bent by a plurality of (three in this example) hinges 7 as shown in FIG. It is connected. One end of the door 9A is disposed close to the vertical member 8a and is pivotally supported via a pivot (not shown) or the like, but the pivot (not shown) is guided along the guide rail 8c and the groove 8d. It is also possible to pivot so as to be movable and pivotable. In contrast, the door 9B is pivotally supported at one end side so as to be movable and pivotable along a guide rail 8c and a concave groove 8d via a pivot (not shown) (this pivot may have a pin configuration or a roller configuration). Has been. Further, the door 9B is provided with a recess 9a in the vicinity of the upper hinge 7 and on the rear upper edge side of the door, and a lock device RE is attached to the recess 9a.

(Structure of hinge) In FIGS. 1 (b) and 2, the hinge 7 is fixed to the door corresponding portion by a plurality of screws B across the door 9A and the door 9B, and each door is always opened. That is, it has a biasing spring 69 that biases it to bend outward. In detail, the hinge 7 supports the left and right hinge pieces 67 and 67 attached to the corresponding door as illustrated in FIG. 2, and the hinge pieces 67 and 67 rotatably via the upper and lower connecting portions 67a. The pivot 68, a coiled biasing spring 69 disposed on the outer periphery of the pivot 68, and pivotally supported so as to cover the biasing spring 69 with respect to the pivot 68, and the biasing spring 69. And the spring receiving pieces 7a and 7b serving as covers which are overlapped with the corresponding hinge pieces 67 in a state where the corresponding ends 69a or 69b are hooked. Each hinge piece 67 is constantly applied with an urging force to be bent as indicated by an arrow via an urging spring 69 and spring receiving pieces 7a and 7b. For this reason, in this hinge 7, when the locking device RE is disengaged, that is, in the unlocked state, the doors 9A and 9B are formed in a substantially square shape (approximately V when the urging force is strong) as shown in FIG. Bend it in the direction of the shape, and switch to the open state. Such a hinge may use a commercial item.

(Configuration of Lock Device) The lock device RE includes a case 1 that is disposed directly or via a base 5 or the like with respect to the recess 9a of the door 9B, and a striker that is supported by the space 15a of the case 1 so as to be vertically movable. 2 and an urging means S1 for urging the striker 2 in a direction projecting from the case 1, and provided at the opening on the main body side from a normal non-operating position pivotally supported by the case 1 and applying no load to the striker 2. The switching member 3 that is rotated to the operating position by the stress when it hits against the abutting portion 8e, the spring means S2 for returning the switching member 3 from the operating position to the non-operating position, and the switching member 3 in the non-operating position. Each time the operation position is switched from to the operating position, the locking mechanism that alternately changes between a locking mode in which the striker 2 is moved against the biasing force of the biasing means S1 and a non-locking mode in which the holding is released. As And a latch 4. In the locking device RE, the latch 4 holds the striker 2 against the urging force, and the door 9B is pushed from the open to the closing direction against the urging force of the urging spring 69. Is released, the latch 4 is switched from the locking mode to the non-locking mode via the switching means 3 and the striker 2, and the striker 2 is engaged with the receiving portion 8c (in this example, the concave groove of the guide rail 8c). When the door 9B can be held in the closed state and the door 9B is pushed again in the same direction, the latch 4 is switched to the locking state via the switching means 3 and the striker 2 to release the engagement, and the door 9B is moved by the biasing force. It should be possible to switch from closed to open.

  Further, the above-described locking device RE includes a base 5 that supports the case 1 so as to be movable directly or via an adjuster case 60 as in this example, and an adjustment case 60 that changes the height of the case 1 relative to the base 5. The height adjusting means 6 is included. Furthermore, as an unreasonable structure, a fixing bracket 55A that pivotally supports the case 1 so as to be able to fall, a sheet metal 55B that is integrated with the fixing bracket 55A and elastically holds the case 1 so that it can be released to a normal position, and the case 1 is fixed to the bracket. And a biasing member S3 biasing toward the normal position of 55A. Hereinafter, details of each member will be clarified.

  First, the case 1 has a substantially open container shape defined by the front and rear walls 10, 11 and both side walls 12, and the like, and a space 15a in which the striker 2 and the latch 4 are disposed, and both sides of the space 15a via inner walls. A small space 15b that is partitioned and passes through both leg portions 31 of the switching member 3 is formed. The space 15a has a bottom wall (not shown), and a shaft portion 14c (see FIG. 9) that supports the lower side of the coil spring as the biasing means S1 and a mounting portion (not shown) for attaching the latch 4 to the bottom wall. And are provided. Reference numeral 13 denotes a piece that is provided in the middle of the left and right sides of the bottom wall. As shown in FIG. 3 (a), the fitting hole 13a is passed through the piece 13 from side to side. Further, the front wall 10 is provided with a notch portion 16 having a large opening on the upper side and a locking portion 17 that is provided in the lower middle and locks the corresponding end of the biasing member 3. The rear wall 11 is provided in the space 15a and guides the striker 2 to the left and right guide grooves 14a and the intermediate guide groove 14b, and a part of the guide groove 14b is passed through and fitted into the protrusion 23a of the striker 2. In addition, a restriction groove 14c (see FIG. 6A) for preventing the striker 2 from coming out of the case space 15a is provided. A shaft hole 18 is formed on the lower side of the side walls 12 so as to be coaxial with the fitting hole 13a. Locking portions 19 are provided on the upper and outer surfaces of the side walls 12 respectively. Each locking portion 19 has an inclined surface that becomes higher from the rear side toward the front side and a front end surface that is substantially vertical.

  The striker 2 is provided on the rear surface of the main body 20, a small block-shaped main body 20, an upper engagement portion 21 protruding upward from the upper surface of the main body 20, guide ribs 22 provided on both side surfaces of the main body 20, and the like. It has a guide rib 23, a lower engagement portion 24 projecting downward from the lower surface of the main body 20, and a tube portion 25 provided in front of the lower engagement portion 24. Among these, the upper surface of the main body 20 is an inclined surface that becomes lower toward the front side than the rear side. The upper engaging portion 21 has a release inclined surface 21 a on the front side and a vertical surface 21 b for locking on the rear side, and is engaged with and disengaged from the receiving portion 8 c of the main body opening. The guide ribs 22 on both sides and the guide ribs 23 on the rear side are fitted into the guide grooves 14a and the guide grooves 14b in the space 15a. The guide rib 23 has a protrusion 23a protruding to the back side. The lower engaging portion 24 has a claw portion 24a at the lower end as shown in FIG. 6B, and is engaged with and disengaged from the latch 4 mounted in the space 15a. The cylindrical part 25 positions the upper part of the coil spring which is the urging means S1 for urging the striker 2 in the direction protruding from the case 1.

  The switching member 3 is substantially U-shaped, and includes an intermediate portion 30 disposed horizontally and left and right leg portions 31 provided on both sides of the intermediate portion 30. The intermediate portion 30 is protruded on both sides of the rear surface and is slightly inclined so as to easily hit the abutting portion 8e of the opening on the main body side that constitutes the upper surface of the pusher 32 that can come into contact with the upper surface of the striker side main body 20. The abutting portion 33 is provided. Each leg portion 31 has a shaft hole 34 which is on the lower end side and penetrates on the coaxial line, and is inserted into the corresponding small space 15 b of the case 1. The above switching member 3 is pivotally supported with respect to the case 1 so as to be rotatable by a predetermined angle in a state where the shaft 35 is inserted into the shaft hole 34 and the shaft hole 18.

  The latch 4 corresponds to the locking mechanism of the present invention, and includes a housing 40 that can receive the lower engaging portion 24 of the striker inside, and a locking portion 42 that is slidably disposed on the housing 40. A sliding body 41, a spring member (not shown) that urges the sliding body 41 in a direction protruding from the housing 40, a substantially heart-shaped cam groove 43 provided on the sliding body 40, and a pin that traces the cam groove 43 44 and is attached to a mounting portion provided on the bottom wall of the space 15a. Then, when the striker 2 is pushed in the direction of the arrow in FIG. 6B through the switching member 3 from the non-locking state of FIG. The sliding body 40 is pushed into the housing 40 against the urging force. In this state, the locking portion 42 is locked in the retracted position as shown in FIG. Further, from this state, when the striker 2 is pushed in the direction of the arrow in FIG. 6B via the switching member 3, the locking is released, and the sliding body 40 is pushed by the urging force, and the locking portion 42. Is moved in a direction protruding from the housing 40, and is switched to a non-locking mode in which the locking of the locking part 42 with respect to the claw part 42a is released.

  The height adjusting means 6 includes an adjuster case 60 that supports the case 1 so as to be able to fall with the shaft 35 as a fulcrum, and an operation member 65 that can change the adjuster case 60 up and down with respect to the base 5. Here, the operation member 65 has a bolt configuration including an operation head and a male screw. The adjuster case 60 is divided into a holding portion 61 that divides a space in which the lower side of the case 1 is arranged, and a space in which the head of the operation member 65 is arranged so as to be operable. And a functional unit 62. The holding part 65 has a front opening. Here, a shaft hole 61 a penetrating the lower side of both side walls 61 on the same axis, a guide rib 61 b provided on the outer surface of both side walls 61, and a lower inner corner of one side wall 61 are provided. The spring locking groove 61c is provided. The functional part 62 is formed with a recess 63 cut out from the left and right middle of the front wall toward the rear, and an insertion part 64 penetrating downward in a part of the bottom surface defining the recess 63. is doing. In FIG. 3, reference numeral 64 a denotes a spring locking groove cut out from the lower side of the holding portion 65 to the functional portion 62. 6 to 9, the height adjusting means 6 is simplified due to restrictions on drawing.

  The base 5 supports the case 1 so as to be movable in the vertical direction via the adjuster case 60, or the case 1 has a predetermined dimension via the height adjusting means 6 including the adjuster case 60 and the operation member 65 with the case 1 as a reference plane. It is a member for enabling position adjustment only in the vertical direction. That is, the base 5 has a substantially U shape defined by the intermediate portion 50 and the side walls 51. The intermediate portion 50 is provided with a female screw portion 54 at the center of the upper surface. The female screw portion 54 has either a configuration in which a female screw that is screwed with a male screw of the operation member 65 is formed in the intermediate portion 50 or a configuration that uses a nut mounted within the thickness of the intermediate portion 50. Each side wall 51 is provided with a guide groove 51a provided on the inner surface, a locking claw 52 protruding from the lower outer surface, and a long hole-shaped escape hole 53 penetrating substantially in the middle of the upper and lower sides. .

  Further, the above-described base 5 has a fixing bracket 55A and a sheet metal 55B connected to the fixing bracket 55A in order to employ a forced-extraction structure in the lock device RE having the form as shown in FIGS. Here, the fixing bracket 55A and the sheet metal 55B are press products, but may be resin molded products. The fixing bracket 55 </ b> A includes a lower mounting portion 56 mounted on the base 5, and a mounting portion 57 that integrates the mounting portions 56 and is fixed to the door side. The mounting portion 56 is provided with an engagement hole 56 a with which the locking claw 52 is engaged, and an escape hole 56 b corresponding to the escape hole 53. The mounting portion 57 is formed so as to be disposed along the both side portions 12 from the back side of the case 1, and is attached to the corresponding portion of the door with a mounting hole 57 a and the upper end thereof is bent and hooked on the corresponding portion of the door. And a latching portion 57b. On the other hand, the sheet metal 55B is set in a shape that is arranged inside the fixed bracket 55A, and the attachment portions 58 are formed so as to be arranged along the both side portions 12 from the back side of the case 1 in the same manner as the attachment portions 57. A mounting hole 58a provided in each mounting portion 58 and overlaid on the mounting hole 57a, and an elastically deformable engagement piece 59 formed one step shorter inside the both mounting portions 58.

(Assembly Procedure) The striker 2 described above is assembled into the case space 15a together with the urging means S1 after the latch 4 described later is mounted, and the corresponding guide ribs 22 are provided in the guide grooves 14a, and the guide ribs 23 are provided in the guide grooves 14b. It is possible to move in the fitted state, and the protrusion 23a hits the upper end of the restriction groove 14c and is prevented from coming off (see FIG. 8). Next, when the switching member 3 inserts both the leg portions 31 into the corresponding small space 15b, the intermediate portion 30 is disposed in the space 15a. In this state, the upper surface intermediate portion of the main body 20 is released between the pressing portions 32, and each pressing portion 32 faces the corresponding side portion of the upper surface of the main body 20. Hereinafter, this state is referred to as a semi-assembled product.

  On the other hand, an adjuster case 60 is incorporated into the base 5 so as to be movable up and down in a state where the guide rib 61b is fitted in the guide groove 51a. In that case, the operating member 5 is placed in a state where its head is disposed in the recessed portion 63, and the adjuster case 60 is moved to the lower side of the base 5 to place the head with a human finger or tool. It rotates so that the male screw part is screwed into the female screw part 54. In addition, a fixing bracket 55A is attached to the base 5 by engaging the locking claw 52 and the engaging hole 56a. At that time, the sheet metal 55B is disposed inside the fixed racket 55A so that the attachment hole 57a and the attachment hole 58a coincide. From the above state, the semi-assembled product is pivotally supported with respect to the adjuster case 60 via the shaft 35.

  That is, the shaft 35 is, for example, in the state of FIG. 5, the left escape hole 56b on the fixed bracket side, the left shaft hole 61a on the adjuster case side, the coil spring as the spring means S2, and the fitting hole 13a of the piece 13 (FIG. 3). ), The coil spring as the biasing means S3, the one shaft hole 18 on the case side, the one shaft hole 34 on the switching member side, the other shaft hole 34 on the switching member side, the other shaft hole 18 on the case side, and the adjuster case side The other shaft hole 61a and the other escape hole 56b on the fixed racket side are passed through and arranged in a skewered state. Thereafter, the shaft 35 is prevented from coming off by the retaining rings 37 being engaged with the circumferential grooves 36 provided on both ends.

  Next, as shown in FIG. 3, the coil spring which is the urging means S2 has one end locked in the locking groove 61c on the adjustment case side (see FIG. 5) and the other end expressing the urging force. The switching member 3 is locked to the lower portion of the one leg portion 31, whereby the switching member 3 is disposed along the inner surface of the front wall of the case and held in a substantially vertical state. This state is the non-operating position of the switching member 3. Further, one end of the coil spring which is the biasing means S3 is locked in the adjusting case side locking groove 64a (see FIG. 3), and the other end is engaged with the case side locking portion 17 while exerting a biasing force. Locked. Thereby, the case 1 is arranged so as to be accommodated inside the adjustment case 60 and is held in a substantially vertical state, and the fixed bracket is provided by the engagement between the engagement piece portion 59 of the sheet metal 55B and the locking portion 19 of the case side portion. It is engaged with 55A and elastically held. The locking device RE of FIG. 3 is assembled in this way, and the case 1 is in a normal state.

(Height adjustment operation) The lock device RT described above is attached to a recess 9a provided in the door 9B as shown in FIG. The recess 9a is provided in advance corresponding to the receiving portion 8c provided in the main body side opening. By the way, there are usually large and small dimensional errors between members. For this reason, when the locking device RT is arranged in the recess 9a and is inserted and fixed by inserting a screw or the like into the mounting holes 58a and 57a, the striker 2 of the biasing means S1 as shown in FIG. The mounting height in the recess 9a must be accurately determined so as to be engaged with the receiving portion 8c as designed while protruding from the case 1 by the urging force. This operation is troublesome. Therefore, this lock device RT is devised so that the height can be adjusted even after it is once fixed in the recess 9a so that the mounting operability is good.

  That is, FIG. 4B shows an upper side (case 1, striker 2, switching member 3, latch 4, biasing means S1, spring means S2, biasing including the adjustment case 60 constituting the locking device RT. The member S3) is shown positioned relative to the base 5 by several millimeters above the arrow. In this operation, the head of the operation member 65 exposed in the depression 63 is rotated to the right indicated by an arrow with a finger or the like. When reducing the height, the operation member 65 is rotated in the reverse direction. In this example, the operation member 65 is screw-fed through rotation and screwed with the female screw 54 of the base, and the upper side including the adjustment case 60 (case 1, striker 2, switching member 3, latch 4, biasing means) S1, spring means S2, and urging member S3) can be smoothly moved up and down with a guide operation of guide groove 51a and guide rib 61b with respect to base 5 (and fixing bracket 55A) within a range of about 10 mm. .

(Main operation of the locking device) Next, the operation when switching from the open state (opening of the door) when using the above locking device RE to the closed state or switching from the closed state to the open state again is shown. 6 to 8 to clarify. In these figures, a right-pointing arrow indicates a biasing force that biases the door in the opening direction, a left-pointing arrow (1) and (2) indicates a pressing force that presses the door against the biasing force, Arrow (1) indicates the pushing force in the closing direction from the opening of the door, and arrow (2) indicates the pushing force in the closing direction from the closed state.

(1) First, in the open state, as inferred from FIG. 1, the opposing end of the doors 9A and 9B is shaped forward (biasing force) by the biasing force of the biasing spring 69 on the hinge side. If is stronger, it is further rotated into a V shape. In this state, by pressing the door 9B in the direction of the arrow by hand, the doors 9A and 9B can be folded, and the width of the opening on the main body 8 side can be increased. In this open state, the locking device RT is in a normal standing state where no load is applied to the striker 2, that is, in the non-operating position, as shown on the right side of FIG. It is moved downward against the urging force of S1, and is held in the moved state by the latch 4. In this latch 4, as shown in FIG. 6B, the pair of engaging portions 42 constituting the latch 4 restrains the claw portion 24 a of the lower engaging portion 24 and locks it in the housing 40. It is an aspect.

(2) When opening the doors 9A and 9B from the open state to the closed state, as shown in FIG. 6A, the door 9B or the door 9A is moved against the urging force of the urging spring 69 of the hinge 7 with an arrow ( Push in the closing direction shown in 1). In this pressing process, the switching member 3 resists the urging force of the spring means S2 by the reaction force when the abutting portion 33 comes into contact with the abutting portion 8e of the main body side opening as shown on the left side of FIG. Rotate clockwise. Then, the striker 2 is pressed downward by the pressing portion 32 of the switching member, and is moved downward against the biasing force of the biasing means S1 by the pressing force. When the striker 2 is pushed in the direction of the arrow in FIG. 6B, the latch 4 is released from the locking state, and the sliding body 40 moves in conjunction with the release of the pressing force on the door. It is pushed by an unillustrated urging force and slides in a direction in which the locking portion 42 protrudes from the housing 40, and finally the restraint of the locking portion 42 with respect to the claw portion 42a is released as shown in FIG. It is switched to the non-locking mode.

  FIG. 7A to FIG. 8B show details from the time when the striker 2 is unlocked from the latch 4 and engaged with the receiving portion 8c of the opening on the main body side and held in the closed state. In the locking device RE described above, when the pressing force on the door is released, the door 9B is moved in the opening direction by the biasing force of the biasing spring 69. At that time, the switching member 3 is rotated from the operating position in the standing direction by the urging force of the spring means S2, and is switched to the normal non-operating position as shown in FIG. In the process in which the switching member 3 is switched to the non-operation position, the striker 2 is moved in a direction protruding from the case 1 as shown in FIG. 7A by the biasing force of the biasing means S1, and the upper end of the upper engagement portion 21 is received. It contacts the reverse concave bottom surface forming the part 8c. The door 9B is slowly moved in the opening direction at a reduced speed by the frictional force received by the contact. Subsequently, the striker 2 is urged upward by the urging force of the urging means S1, and in this case, when reaching the reverse concave shape forming the receiving portion 8c as shown in FIG. While being pressed against the inner edge of the reverse concave shape from the lower end surface, the door 9B is slightly moved in the opening direction by the urging force with the door 9B as shown in FIG. 8B and engages with the reverse concave recess to keep the door 9B closed ( Lock). When the striker 2 opposes the receiving portion 8c, such an operation is caused by a repelling sound having a magnitude proportional to the urging force when projecting into the reverse concave shape of the receiving portion (engaging operation noise or impact sound). The same is achieved, but by engaging the tip of the striker with the reverse concave bottom edge of the receiving part while pressing against the inner edge of the reverse concave, such repelling noise can be reduced easily without adding a braking member. it can.

(3) When the door 9 is to be opened again, in the closed state of FIG. 8 (b), the door 9B or the door 9A is resisted against the urging force of the hinge side urging spring 69 with the hand or finger. Push in the closing direction (2) until an overstroke occurs as shown in FIG. In other words, the arrow (2) in FIG. 8 (b) shows the state when the door is pushed in the closing direction, and the arrow (2) in FIG. 6 (a) shows the state when the pushing force is released. Yes. Here, when the door 9B is pushed in the closing direction indicated by the arrow (2) in FIG. 8B, the striker 2 moves downward against the urging force of the urging means S1. In this process, the switching member 3 is maintained in the non-actuated position raised by the urging force of the spring means S2 until it contacts the abutting portion 8e, and after the contact portion 33 hits the abutting portion 8e, the reaction force is applied. It is rotated clockwise against the biasing force of the spring means S2.

  Then, the striker 2 is pressed downward by the pressing portion 32 of the switching member 3, and is moved downward against the biasing force of the biasing means S1 as shown in FIG. The claw portions 24 a of the lower engaging portion 24 are restrained by the pair of engaging portions 42 constituting the latch 4 and are locked while being drawn into the housing 40. That is, the latch 4 is switched from the non-locking mode to the locking mode. When the pushing force is released, the door is moved in the opening direction by the urging force of the urging spring 69 as shown in the right diagram of FIG. 6A. In this process, the switching member 3 is also urged by the spring means S2. Is switched to the non-operating position. Thereafter, each time the doors 9B and 9A are pressed in the closing direction, the doors 9B and 9A are repeatedly held and released.

The above-described locking device RE can be easily disengaged as a countermeasure when an infant, a child, or the like is trapped in the back side closed space (such as a storage room) of the doors 9B, 9A. Next, the unreasonable structure will be described in detail with reference to FIGS.

  In the state shown in FIG. 9A, for example, when the child is confined in a closed space closed by a door, the lock device RE has no handle or handle recess on both the design surface and the back surface of the door 9B, 9A. Even if the child wants to release the engagement of the locking device RE, the child cannot pull the doors 9B and 9A to the closed space side by himself and is in a critical state. However, in this structure, the locking device RE is automatically disengaged and the doors 9B and 9A are automatically switched to the open state simply by pushing or hitting the door 9B or 9A from the closed space side of the child. It is done.

  That is, when vibration or load is applied to the doors 9B and 9A, the locking device RE resists the urging force of the urging member S3 with the shaft 35 as a fulcrum, and also has the engagement piece 59 on the sheet metal side and the case side. When the engagement force with the locking portion 19 is overcome and the engagement is released, the vehicle falls over as shown in FIG. 9B. In this overturned state, the striker 2 descends with the compression displacement of the biasing means S1, and the upper The engaging part 21 is released from the receiving part 8c and released. Then, the door is automatically rotated in the opening direction through the biasing spring 69 from the closed state.

  Further, as shown in FIG. 10, the locking device RE is restored to the original normal state only by pushing the door again in the closing direction. That is, when the door is pushed in the closing direction against the urging force of the urging spring 69 in the state where the door is rotated in the opening direction than FIG. 2 is moved downward against the urging force with buffering with the main body side opening and the receiving portion 8c. As shown in FIG. 10A, the switching member 3 abuts against the abutting portion 8e of the opening on the main body side and is rotated clockwise against the urging force of the spring means S2 by the reaction force, so that the striker 2 is switched to the switching member. 3 is pushed down. In the process in which the door is further pushed in the same direction, the case 1 is moved closer to the fixing bracket 55A by the stress received from the switching member 3 as shown in FIG. 5B, and finally the fixing portion bracket as shown in FIG. The case side locking portion 19 is elastically engaged with the side engaging piece portion 59. When the pushing force against the door is released, the latch 4 is switched to a locking mode in which the lower engaging portion of the striker is restrained. The door is moved in the opening direction by the biasing force of the biasing spring 69, and in this process, the switching member 3 is also switched to the inoperative position by the biasing force of the spring means S2.

(Modification) FIGS. 11 and 12 show a modification in which a part of the above embodiment is changed. In this description, the same portions as those of the first embodiment are denoted by the same reference numerals, and only the changed portions are described in detail using different reference numerals only for different portions or changed members.

  The first change is different in that the fixing bracket 55A and the sheet metal 55B are integrated. That is, the fixing portion racket 55 includes both lower mounting portions 56 to be mounted on the base 5, an attachment hole 57 a for fixing to the corresponding portion of the door with a screw, and a latch portion 57 b to be hooked on the corresponding portion of the door. And the elastically deformable engaging piece 59 that is formed one step shorter inside the both mounting portions 57 are integrally formed.

  The second change is that the latch mechanism 4A replaces the latch 4, that is, the cam groove 45 provided on the striker 2A side, the pin 46 provided on the case 1 side and tracing the cam groove 45, and the pin 46 It differs in that it is constituted by a leaf spring 47 that is urged so as to swing. That is, in the modified example, the case 1 is different from the above embodiment in that a tracing pin 51 and a leaf spring 47 that urges the pin are attached. The striker 2A is similar to the striker 2 in that the striker 2 includes a main body 20, an upper engaging portion 21, a guide rib 22, a cylindrical portion 25, and the like. The difference is that the cam groove 28 has a heart cam shape.

  Of these, the pin 46 is formed by bending a metal wire into a substantially U shape, with a lower end 46a pivotally supported by a corresponding portion on the case side, and an upper end 46b provided in the corresponding portion on the case side. The pin intermediate portion is biased and held by the leaf spring 47 in this state. The leaf spring 47 urges the pin-corresponding portion on the upper side in a state where the lower side is crimped to the engaging recess provided in the case-side corresponding portion, and the pin 46 supports the lower end 46a against the urging force. To be rocked. The cam groove 28 is formed around a convex heart-shaped island 29 as shown in FIG. 12A, and extends from the lower side to the upper right side. The guide groove for locking 28b and the guide groove for release 28d separated from each other, the concave locking groove 28c positioned slightly below the guide grooves 28b and 28d, and the return groove 28e extending downward from the guide groove 28d. Etc.

  In the above locking mechanism 4A, FIG. 12A shows, for example, the door open state, that is, the right side of FIG. 6A and the state of FIG. In the locking mechanism 4A, the striker 2 is moved in the direction of the arrow against the urging force in the previous stage, and accordingly, the pin 46 (the other end 46b) is engaged with the locking groove 28c. The striker 2 is restricted from moving upward against the biasing force of the biasing means S1.

  FIG. 12B corresponds to, for example, a state in which the door is shifted from the open state to the left side of FIG. In the locking mechanism 4A, the striker 2 is pushed by the switching member 3 as described above and moved downward against the biasing force of the biasing means S1, and the pin 46 (the other end 46b) is locked accordingly. It moves from the groove 28c to the release guide groove 28d.

  FIG. 12C corresponds to, for example, a state in which the door releases the pushing force from the state on the left side of FIG. In the locking mechanism 4A, the switching means 3 is switched from the operating position to the non-operating position, and at the same time, the striker 2 is moved upward by the urging force of the urging means S1 as described above and engaged with the receiving portion 8c. The other end 46b) moves from the guide groove 28d to the lower end of the return groove 28e or the lower end of the dwelling groove 28a.

  FIG. 12D corresponds to, for example, a state in which the door is pushed in the arrow (2) direction from the closed state of FIG. The locking mechanism 4A is rotated in the direction of the operating position against the biasing force by the reaction force when the switching means 3 hits the abutting portion 8e, and the striker 2 is pushed downward by the rotation of the switching member 3. The pin 46 (the other end 46b) moves from the dwelling groove 28a to the locking guide groove 28b.

  FIG. 12E corresponds to a state in which the pushing force against the door is released from the left side of FIG. 1A, for example, and the door moves again in the opening direction by the urging force. In the locking mechanism 4A, the switching means 3 is rotated from the operating position to the non-operating position, the triker 2 is moved upward by the urging force of the urging means S1, and the pin 46 (the other end 46b) is moved again from the guide groove 28b. It moves to the locking groove 28c. In the above modification, the cost can be reduced as compared with the embodiment.

  In addition, although the folding door was mentioned as a door in the above form, the locking device of this invention is a rotation type urged | biased in an opening direction (the structure rotated by one end as a fulcrum, the pivot of one end, or a pivot part) (Including a structure that is rotated while moving the door), it is also applicable to a single door, or conversely, a folding door type door in which three or more are connected.

1 ... Case (12 is a side wall, 15a is a space, 15b is a small space, 19 is a locking part)
2, 2A ... striker (20 is a main body, 21 is an upper engaging portion, 24 is a lower engaging portion)
3 ... switching member (30 is an intermediate part, 31 is a leg part, 32 is a pushing part, 33 is a contact part)
4 ... Latch (corresponding to a locking mechanism, 40 is a housing, 41 is a sliding body, 43 is a cam groove)
4A: Locking mechanism (28 is a cam groove, 46 is a pin, 47 is a leaf spring)
5 ... Base (52 is a locking claw, 53 is a relief hole, 54 is a female screw part)
6 ... Height adjusting means (60 is an adjuster case, 65 is an operation member)
7 ... Hinge (67 is hinge piece, 68 is pivot, 69 is biasing spring)
8 ... 框 (8c is a guide rail corresponding to the receiving portion, 8d is a concave groove, 8e abutting portion)
9A, 9B ... Folding type door (9a is a recess)
35 ... Shaft (36 is a circular groove)
55, 55A ... fixed bracket (56a is an engagement hole, 55B is a sheet metal, 59 is an engagement piece)
RE ... Locking device S1 ... Biasing means S2 ... Spring means S3 ... Biasing member B ... Screw

Claims (7)

Rotating around one end of the main body side opening as a fulcrum to switch between a closed state that closes the opening and an open state that opens, and is used for doors that are always urged in the opening direction. A striker that engages with and disengages from a locking receiving portion provided on the main body in a state where the striker is engaged with the receiving portion when the door is pushed from the open to the closing direction and the pushing force is released. A locking device that can be held in a closed state and can be rotated from closed to open by releasing the engagement by pushing the door in the same direction again,
A case disposed on the door and supporting the striker in a movable manner;
Biasing means biasing the striker in a direction protruding from the case;
The striker is pivoted by the stress when it hits the abutting portion provided on the main body side from the normal non-operating position that is pivotally supported by the case and does not apply a load to the striker, and the striker is switched to the operating position. A switching member that moves against the biasing force of the biasing means;
Spring means for returning the switching member from the operating position to the non-operating position, and a locking mode for holding the striker in a state of being moved against the biasing force each time the switching member is switched from the non-operating position to the operating position. And a locking mechanism that can be alternately changed to a non-locking mode for releasing the holding.   The locking mechanism includes a housing attached to the case and capable of receiving a corresponding portion of the striker therein, a sliding body with a locking portion slidably disposed on the housing, and the sliding 2. A latch comprising: a spring member that biases a moving body in a direction protruding from the housing; a cam groove provided in the sliding body; and a pin that traces the cam groove. The locking device according to 1.   The lock mechanism according to claim 1, wherein the locking mechanism includes a cam groove provided on the striker side and a pin provided on the case side to trace the cam groove. .   The receiving portion has a substantially reverse concave cross section, and the striker releases the locking force when the switching member is rotated from the non-operating position to the operating position, and then the pressing force from the opening to the closing direction is released. The mechanism is switched from the locking mode to the non-locking mode, and the tip is moved by the urging force together with the door while being pressed against the reverse concave inner edge from the reverse concave lower end surface of the receiving portion. The locking device according to claim 1, wherein the locking device can be engaged with the locking device.   5. The apparatus according to claim 1, further comprising: a base that supports the case so as to be movable in a vertical direction; and a height adjusting unit that varies a height of the case with respect to the base. A locking device according to claim 1.   A fixing bracket that is fixed to the door and pivotally supports the case so that the case can be overturned; and an urging means that urges the case to a normal position of the fixing bracket, and the striker is engaged with the receiving portion. The door locking device according to any one of claims 1 to 5, wherein in a combined state, when the case receives a predetermined amount of vibration, the case falls and the engagement can be released.   A door comprising the locking device according to claim 1.

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