JP6301148B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device that can be used in a vehicle mounting device such as a glove box.

  In many automobiles, a glove box capable of storing vehicle verification or personal items is installed on the passenger side of the instrument panel. The glove box is rotated from the closed position accommodated in the instrument panel to the passenger compartment side to put in and out articles, and is held in the closed position by a locking device disposed in the glove box. (For example, refer to Patent Document 1). The lock device of Patent Document 1 includes an operation knob that is swingably disposed on the front side of the glove box, and the operation knob is held at a pressing start position by biasing of a coil spring attached to the operation knob. Yes. The locking device includes a link member that is disposed on the back side of the glove box, has a pressure receiving portion that extends in a radial direction from the rotation shaft, and two input portions, and that rotates about the rotation shaft. The link member is urged in a predetermined direction by a coil spring. Further, the locking device has a first collar portion that is connected to the protruding end of one input portion so that the right end is rotatable and extends to the left, and a left end that is connected rotatably to the protruding end of the other input portion. A second eaves portion extending rightward, and left and right eaves portions protruding from both sides of the glove box are hooked to the instrument panel.

  In the lock device of Patent Document 1, when the user swings the operation knob, the pressure receiving portion of the link member is pushed by the pressing portion of the operation knob, the link member rotates, and the link member rotates. The left and right buttocks move synchronously so that they retract from the instrument panel. Moreover, even if it is a case where one hook part is pushed so that it may evacuate from an instrument panel, the other hook part will evacuate from an instrument panel synchronously by rotation of a link member. To move. Thus, the locking device of Patent Document 1 operates so that the left and right hooks operate in synchronization, so that one hook is hooked on the instrument panel, but the other hook is not hooked on the instrument panel. Can be avoided.

JP 2009-235794 A

  The lock device of Patent Document 1 is connected to the protruding end of the input unit, whereas the input unit extending radially outward from the rotation shaft of the link member swings about the rotation shaft. The buttocks slide in the left-right direction. That is, the connection part between the input part and the collar part of the link member cannot be fixed, and absorbs the difference in movement between the input part that swings around the front-rear axis and the collar part that slides in the left-right direction. The heel part is pivotally supported by the input part with a margin (play). For this reason, the play which occurs in the connection part of an input part and a buttocks may generate inconveniences, such as abnormal noise generated due to vibrations during driving of the automobile, and the synchronization between the left and right buttocks.

  That is, the present invention has been proposed in order to suitably solve these problems related to the prior art, and an object of the present invention is to provide a locking device that has a simple configuration and can prevent the occurrence of problems. And

In order to overcome the above-mentioned problems and achieve the intended purpose, the locking device of the invention according to claim 1 of the present application provides:
The four linkages are hinged at the ends, and the coupling sites to which the ends of the linkages are linked are formed in a closed annular shape, and the diagonal coupling sites are displaced in opposite directions. A linkage structure configured to be deformable,
A pair of scissors that are connected to each of the two coupling sites located diagonally of the linkage structure, and reciprocate in opposite directions as the linkage structure is deformed to engage / disengage with the corresponding engagement object. and parts,
Biasing means for biasing the collar portion so as to move in a locking direction for engaging the engagement target ;
The linking structure is characterized in that two binding sites located on one diagonal are arranged symmetrically across a line connecting the two binding sites located on the other diagonal.
According to the first aspect of the present invention, the lock device can move the pair of hooks connected to the coupling sites located diagonally of the linkage structure synchronously by deformation of the linkage structure. Here, the linkage structure is formed in a closed ring shape in which four linkage portions are hinged at the ends, and can be deformed so that the diagonally arranged binding sites are displaced in opposite directions. Therefore, the force input from one binding site can be transmitted from the two routes to the other binding site located diagonally. That is, since the locking device can achieve stable transmission of force by the linkage structure, the other flange can be smoothly moved through the linkage structure accompanying the movement of one of the flanges. Generation and synchronization shift can be suppressed. In addition, the linkage structure can transmit the force from the two linkage portions to one coupling site, so that it is possible to suppress the bias of the force due to the change of the direction of the force by the linkage portion, and more stable. Power transmission can be achieved. Furthermore, since the lock device is assisted by the urging means so that the collar portion returns to the lock position, the operation load can be reduced.

The invention according to claim 2 is summarized in that the linkage structure includes the linkage portions connected by an integral hinge.
According to the invention according to claim 2, since the linkage portion is connected by an integral hinge, the configuration can be simplified compared to a link structure that allows the linkage portion to be connected by a shaft to be rotated, Occurrence of problems such as rattling, interference, and abnormal noise occurring at the connection site can be avoided.

The gist of the invention according to claim 3 is that the linkage structure and the flange portion are integrally formed.
According to the invention which concerns on Claim 3, while forming a collar part and a linkage structure integrally, a structure can be simplified more and a number of parts can be reduced.

In the invention according to claim 4, in the linkage structure, the linkage structure is provided so as to be connected to a coupling portion having a diagonal different from the diagonal where the pair of flanges is provided, and the linkage moves in the unlocking direction. The gist is provided with an extruding part that guides the flange part so as to be displaced from the engagement target at the time of deformation.
According to the fourth aspect of the present invention, the lock device can be easily unlocked by the push-out portion that guides the hook portion so as to be displaced from the engagement target when unlocking the hook portion.

  According to the locking device of the present invention, it is possible to prevent the occurrence of problems with a simple configuration.

It is a schematic perspective view which shows the locking device which concerns on the suitable Example of this invention, (a) shows the state in which a collar part exists in a lock position, (b) shows the state in which a collar part exists in a lock release position. It is a schematic perspective view which decomposes | disassembles and shows the locking device of an Example. It is a front view which shows the locking device of an Example, (a) shows the state in which a collar part exists in a lock position, (b) shows the state in which a collar part exists in a lock release position. Note that the lid is omitted and the relationship between the lock device and the box body is shown. It is the sectional view on the AA line of Fig.3 (a). (a) is a schematic perspective view which shows the box by which the locking device of the Example was arrange | positioned, (b) shows the state which isolate | separated the box main body and the lid. It is a schematic perspective view which shows the example of a change of a locking device.

  Next, a preferred embodiment of the locking device according to the present invention will be described below with reference to the accompanying drawings.

  The embodiment includes a box-shaped box body 12 having an open front surface and a lid 16 that is connected to the front surface of the box body 12 via a hinge 14 so that the front opening of the box body 12 can be opened and closed. A case where the locking device 20 is applied to the box 10 (see FIG. 5) will be described. The locking device 20 is formed in a substantially tray shape that opens to the rear, and is attached so as to block the rear opening of the front plate portion 17 and the front plate portion 17 constituting the surface of the lid 16. It arrange | positions in the apparatus accommodating space 16a (refer FIG. 5) defined between the backplate parts 18 which comprise. The locking device 20 is configured such that a collar portion 24 that moves forward and backward protrudes from each of the collar openings 16 b that are opened on the left and right side surfaces of the lid 16. The locking device 20 inserts the lid 16 into the front surface of the box body 12 by inserting the pair of flange portions 24 and 24 into corresponding engagement openings (engagement targets) 13 formed on the left and right side walls of the box body 12. Rotation is restricted in a closed posture with the opening closed. Further, the locking device 20 is configured to release the restriction of the rotation of the lid 16 and to allow the posture displacement of the lid 16 to the open posture by removing the collar portion 24 from the engagement opening 13 by the user's operation. Is done.

  As shown in FIGS. 1 to 3, the locking device 20 is formed in a closed ring shape by a pair of flange portions 24, 24 and four linkage portions 28 being hinged at the ends, and is diagonally And a link member 26 having a linkage structure 26 configured to be deformable so as to be displaced in opposite directions. The pair of left and right collar portions 24 are provided to be connected to each of two lateral coupling sites (coupling sites) that are diagonally spaced apart in the left-right direction in the linkage structure 26, and the pair of collar portions 24, 24 are linked to each other. Along with the deformation of the structure 26, the structure 26 is configured to reciprocate in opposite directions and engage / disengage with the corresponding engagement openings 13, 13. That is, the pair of flange portions 24, 24 are close to each other at the lock positions (see FIGS. 1 (a) and 3 (a)) that are spaced apart from each other and can be engaged with the corresponding engagement openings 13, 13, respectively. Thus, it is possible to reciprocate between lock release positions (FIGS. 1B and 3B) that are disengaged from the corresponding engagement openings 13 and 13. The locking device 20 includes an operating unit 30 that moves the collar 24 in the unlocking direction (from the locked position to the unlocked position) for retracting the collar 24 from the engagement opening 13 by a user operation. Furthermore, the locking device 20 includes a biasing means 32 that biases the collar portion 24 so as to move in a locking direction (from the unlocking position to the locking position) in which the collar portion 24 enters the engagement opening 13. Here, the lock device 20 is configured as an integral unit in which the lock member 22, the operating unit 30, the biasing means 32, and the like are supported by the base member 34 and can be attached and detached via the base member 34. ing.

  As shown in FIG. 2, the flange portion 24 is a rod-shaped portion having a substantially rectangular cross section, and is hooked into the engagement opening 13 at the locked position inserted into the engagement opening 13 or to the engagement opening 13. It is configured as a rigid body that does not substantially deform even if it interferes with the box body 12 or the like during engagement / disengagement. Further, the flange portion 24 has a tapered surface 24a that inclines inwardly from the front side to the rear side at the tip, and when the opened lid 16 is closed, the tapered surface 24a that contacts the side wall of the box body 12 The collar 24 is guided to move from the locked position toward the unlocked position.

  As shown in FIG. 3, the linkage structure 26 is a pantograph-like portion formed by connecting four linkage portions 28 so as to form a diamond shape, and the coupling portion of the linkage portion 28 is an integral hinge. 29 is connected. In other words, the linkage structure 26 is configured to be deformable so that the two linkage portions 28, 28 connected to the coupling site with the integral hinge 29 of the coupling site are connected to and separated from each other. Each linking portion 28 that forms each side extending linearly in the linking structure 26 is a linearly extending rod-like body having a substantially rectangular cross section, and is connected to the integral hinge 29 from one end to the other end. The whole is constructed as a rigid body that does not substantially deform. The integral hinge 29 is configured to be thinner than the linkage portion 28 so that it can be bent and deformed in the thickness direction. In the linkage structure 26, a pair of lateral coupling sites that are diagonally located and the collar portions 24 are respectively arranged on the left and right sides, and a pair of vertical coupling sites that are located on different diagonals are arranged vertically. Has been placed. The linkage structure 26 is arranged so that two coupling sites located on one diagonal are symmetrical with respect to an imaginary line (line) connecting the two coupling sites located on the other diagonal. . In the lock member 22 of the embodiment, the linkage structure 26 and the pair of left and right flange portions 24, 24 are formed symmetrically across an imaginary line passing through the upper and lower vertical coupling portions, and pass through the left and right lateral coupling portions. The linkage structure 26 is formed vertically symmetrically across the virtual line.

  As shown in FIG. 3, in the linkage structure 26, when the left and right horizontal binding sites are close to each other, the upper and lower vertical binding sites are separated from each other, and when the left and right horizontal binding sites are spaced from each other, the upper and lower vertical binding sites are close to each other. Deform to The linkage structure 26 is deformed so that the left and right lateral coupling sites are separated from each other when the upper and lower vertical coupling sites are close to each other, and the left and right horizontal coupling sites are brought closer to each other when the upper and lower vertical coupling sites are separated from each other. In addition, when a force is applied to displace one binding site, the linkage structure 26 has a different pair from the binding site to which the force is applied as the two linking portions 28 and 28 connected to the binding site move. The binding site at the corner is displaced, and the binding site located at the opposite corner of the binding site to which a force is applied is displaced in the opposite direction to the binding site to which the force is applied. The lock member 22 includes an auxiliary support portion 36 that extends downward from the lower vertical coupling portion and an extrusion portion 38 that also functions as an auxiliary support portion that extends upward from the upper vertical coupling portion.

  As shown in FIG. 2, the operating portion 30 is provided on the front side of the linkage structure 26 so as to be slidable in the vertical direction, and is provided at the upper end of the main body piece 42. And an operation piece 44 facing the operation opening 16c provided in the plate portion 17. The operating portion 30 is formed to project forward from the front surface of the base member 34, and the main body piece 42 is sandwiched between a pair of holding pieces 48, 48 spaced apart in the left-right direction, so that movement in the left-right direction is restricted. The Further, the operating portion 30 includes a claw formed on the front edge of a pair of holding pieces 48, 48 that are arranged in two sets apart from each other in the vertical direction, and a front edge of a guide piece 49 that is erected on the front surface of the base member 34. The main body piece 42 is sandwiched between the two and the movement in the front-rear direction is restricted. Here, the operating portion 30 has a positioning recess 42a formed at a side edge of the main body piece 42 at a position corresponding to the holding piece 48, and the holding piece 48 abuts on the upper edge or the lower edge of the positioning recess 42a. The reciprocable range of the operating unit 30 is defined. Further, the operating portion 30 includes a connecting piece 46 that is hooked on a receiving portion 40 formed on an auxiliary support portion 36 that extends downward from a lower longitudinal coupling portion of the linkage structure 26, and is rearward on the rear surface of the main body piece 42. It is formed to project toward. The actuating part 30 has the receiving part 40 sandwiched between connecting pieces 46 and 46 opposed to each other in the vertical direction, and the actuating part 30 and the lower coupling portion of the linkage structure 26 are linked in one up-and-down movement. And connected to move up and down. The operation piece 44 is a plate-like piece that extends forward from the main body piece 42 and serves as a portion that is grasped by the user when the lock device 20 is unlocked.

  In the embodiment, a coil spring is used as the urging means 32, and is formed so as to protrude downward from one of the flange portions 24 and to protrude from the front surface of the base member 34 so as to face the abutting portion 24 b. The biasing means 32 is interposed between the receiving wall 50 and the receiving wall 50. Note that substantially columnar receiving bosses 24c and 50a are formed on the abutting portion 24b and the receiving wall 50, and the urging means 32 is positioned by fitting the receiving bosses 24c and 50a to the coil of the urging means 32. doing. The linkage structure 26 is always elastically applied in the locking direction (outward) to the abutting portion 24b by the urging means 32, and the urging means is in a free state in which the operating portion 30 is not operated. 32, both flange portions 24, 24 are held in the locked position, and the operating portion 30 is in the upper position.

  As shown in FIG. 3, the lock member 22 is provided on the front surface of the base member 34, and is held by guide means that defines a movement path of the lock member 22 by abutting against the lock member 22. In the embodiment, as guide means, a lateral guide piece 52 for guiding the left and right flange portions 24, 24, an auxiliary support portion 36 that extends downward from a lower vertical coupling portion in the linkage structure 26, and the linkage structure 26. And a vertical guide piece 54 for guiding the pushing portion 38 extending upward from the upper vertical coupling portion. On the front surface of the base member 34, a pair of lateral guide pieces 52, 52 extending in the left-right direction are disposed opposite to each other, corresponding to the left and right flange portions 24, 24. In the embodiment, two pairs of upper and lower horizontal guide pieces 52, 52 are provided to be separated from each other in the left and right directions, corresponding to one flange portion 24. The pair of lateral guide pieces 52, 52 are arranged so that the path from the lateral coupling portion of the linkage structure 26 to the flange 24 is straight along the reciprocating direction of the flange 24 with the flange 24 interposed therebetween. It prescribes. In addition, a pair of vertical guide pieces 54, 54 extending in the vertical direction are disposed on the front surface of the base member 34 so as to be opposed to each other in the left-right direction, corresponding to the auxiliary support portion 36 and the pushing portion 38. The pair of vertical guide pieces 54, 54 are defined such that the vertical coupling portion of the linkage structure 26 is linearly displaced in the vertical direction with the auxiliary support portion 36 or the extrusion portion 38 interposed therebetween.

  As shown in FIG. 2, the pushing portion 38 is provided so as to be connected to the upper vertical coupling portion in the upper and lower diagonals different from the left and right diagonals in which the pair of flange portions 24 and 24 are provided in the linkage structure 26. ing. Thus, the push-out portion 38 retracts toward the device accommodating space 16a when the flange portion 24 advances in the locking direction and the projecting dimension from the device accommodating space 16a increases, and the distal end of the flange portion 24 is retracted. When retreating to the device housing space 16a in the unlocking direction, it reciprocates so as to protrude outward from the device housing space 16a. Similar to the flange portion 24, the extruded portion 38 is a rod-shaped portion having a substantially rectangular cross section, and is configured as a rigid body that does not substantially deform even if it interferes with the box body 12 or the like. Further, the pushing portion 38 has a tapered surface 38a inclined downward from the front side toward the rear side at the tip, and when the linkage structure 26 in which the flange portion 24 moves in the unlocking direction, the front surface of the box body 12 is deformed. A tapered surface 38a is configured to come into contact with the guiding portion 12a formed on the upper edge of the opening in the closed posture of the lid 16 (see FIG. 4). When the pushing portion 38 moves upward while abutting the tapered surface 38a with the hemispherical guiding portion 12a, the pushing portion 38 is in the opening direction of the lid due to the contacting of the tapered surface 38a and the guiding portion 12a. You will be guided towards

(Effects of Example)
Next, the operation of the locking device 20 according to the embodiment will be described. When the user pushes down the operating piece 44 of the operating unit 30 against the urging force of the urging means 32, the user is pulled by the receiving unit 40, and the lower vertical coupling portion in the linkage structure 26 moves downward. As a result, the two linkage portions 28, 28 connected to the lower vertical binding portion are displaced so as to approach each other with the lower integral hinge 29 as a fulcrum, so that the left and right horizontal binding portions are close to each other. Moving. As the left and right lateral coupling sites move closer to each other, the left and right flanges 24, 24 move synchronously from the locked position toward the unlocked position, and the respective flanges 24 are disengaged from the engagement openings 13 and the lid 16 is released. Permissible. At this time, the linkage structure 26 causes the two linkage portions 28, 28 connected to the upper vertical coupling portion to approach each other with the upper integral hinge 29 as a fulcrum as the left and right lateral coupling portions move in proximity. Accordingly, the upper longitudinal coupling portion and the pushing portion 38 move upward. Since the pushing portion 38 moves upward while the tapered surface 38a of the pushing portion 38 is in contact with the guiding portion 12a, the pushing portion 38 is pushed forward by the guiding portion 12a. The lid 16 in the closed position can be urged toward the open position. As described above, since the opening of the lid 16 can be assisted by the pushing portion 38 protruding in conjunction with the movement of the left and right flange portions 24, 24 in the unlocking direction, the opening operation of the lid 16 by the user can be performed with a small force. This can be done and can improve usability.

  When the user releases the operation piece 44 with the lid 16 in the open position, one of the flanges 24 is urged in the locking direction by the urging means 32 and moves from the unlocked position to the locked position. Then, the two linking portions 28, 28 connected to the lateral coupling portion connected to one of the flange portions 24 are displaced so as to approach each other with the lateral integral hinge 29 as a fulcrum. Thereby, as the upper and lower vertical binding sites move so as to be close to each other, the two linkage portions 28 and 28 connected to the other horizontal binding site are displaced so as to approach each other with the integral hinge 29 as a fulcrum, The other lateral coupling part is displaced so as to be separated from the one lateral coupling part, and the other collar part 24 is also moved to the lock position in conjunction with the one collar part 24 urged by the urging means 32. Become. Thus, since the locking device 20 is provided so that the pair of flange portions 24 and 24 are connected to each other at the connecting portion located diagonally of the linkage structure 26 configured in a pantograph shape, the pair of flange portions 24 is provided. , 24 can be moved synchronously so as to be close to or away from each other.

  When the lid 16 is returned from the open position to the closed position, the left and right flange portions 24, 24 abut against the side walls of the box body 12, so that the left and right flange portions 24, 24 are moved from the locked position to the unlocked position. Applying force to push toward When the collar portion 24 is pressed in the unlocking direction, the two linkage portions 28 and 28 connected to the lateral coupling portion are displaced with the integral hinge 29 as a fulcrum, so that the upper and lower vertical coupling portions are separated from each other. Therefore, the right and left lateral coupling sites are allowed to move close to each other, and the left and right flanges 24, 24 move from the lock position in synchronization with the lock release position. Thereby, each collar part 24 retracts | saves toward the apparatus accommodation space 16a, and closing of the lid 16 is accept | permitted. When the left and right flange portions 24, 24 are inserted into the corresponding engagement openings 13 and the pressing of the flange portions 24, 24 in the unlocking direction is released, the biasing means 32 is biased as described above. As a result, the linkage structure 26 is deformed so that the left and right lateral coupling sites are separated from each other, so that the left and right flange portions 24, 24 move synchronously from the unlocked position to the locked position and are held in the locked position. . Here, since the locking device 20 is assisted by the biasing means 32 so that the collar portion 24 returns to the locked position, the operation load can be reduced.

  When only one of the hooks 24 is pushed toward the unlocking position, the two linkage parts 28 connected to the lateral coupling portion connected to the one hook part 24 as the one hook part 24 moves, 28 is displaced so as to be separated from each other with the integral hinge 29 as a fulcrum, and the upper and lower vertical coupling sites are moved away from each other. When the upper and lower vertical binding sites move away from each other, the two linkage portions 28 and 28 connected to the other horizontal binding site are displaced away from each other with the integral hinge 29 as a fulcrum, so The other flange portion 24 is moved to the unlocked position in conjunction with the one flange portion 24 that is displaced so as to be close to the lateral coupling portion. As described above, the other flange 24 is also interlocked with the movement of the one flange 24 in the unlocking direction by the linkage structure 26, and the left and right flanges 24, 24 are moved to the unlocked position in synchronization. be able to. Further, when the pressing state toward the unlocking position with respect to one of the collar portions 24 is released, the biasing means 32 urges the left and right collar portions 24 with the deformation of the linkage structure 26 as described above. , 24 are synchronously moved to the locked position. As described above, in the locking device 20, even when only one collar 24 is pushed or pulled, the other collar 24 is interlocked with the one collar 24 and the unlocking position and the lock position are also coupled. Can be moved to.

  The locking device 20 can move the pair of flanges 24, 24 connected to the coupling site located diagonally of the linkage structure 26 in synchronization with the linkage structure 26. Here, the linkage structure 26 is formed in a substantially quadrangular closed ring shape in which the four linkage portions 28 are connected to each other through the integral hinge 29 at the end, and the binding sites located on the opposite sides are in a direction opposite to each other. Since it is configured to be deformable so as to be displaced, a force input from one binding site can be transmitted from the two routes to the other binding site located diagonally. That is, since the locking device 20 can achieve stable transmission of force by the linkage structure 26, the locking device 20 moves the pair of collars 24, 24 via the linkage structure 26 according to the operation of the user, and the biasing means 32. The movement of the pair of eaves 24, 24 via the linkage structure 26 accompanying the biasing of the movement, or the movement of the other eaves 24 via the linkage structure 26 accompanying the movement of the one eaves 24 causes a large operating load. It can be done smoothly without receiving it. Further, since the linkage structure 26 can transmit force from the two linkage portions 28 and 28 to one coupling site, it suppresses the bias of force accompanying the change of the direction of force by the linkage portion 28. Can achieve more stable transmission of force. Therefore, the locking device 20 can avoid the synchronization shift of the pair of flange portions 24, 24 and the increase of the operation load, and can operate the flange portion 24 stably.

  Unlike the link mechanism that transmits force by links that are connected to each other so as to be able to rotate, the locking device 20 is not limited by the integral hinge 29 even if the four linkage portions 28 of the linkage structure 26 are integrally connected. The direction of the force applied to the binding site can be changed. That is, the lock device 20 does not require a connection structure such as a link structure that connects the members so as to be able to be displaced, such as turning, so that the configuration can be simplified. Since the lock member 22 is integrally connected to each other such as the linkage portion 28 and the flange portion 24 of the linkage structure 26, the lock member 22 is caused by rattling that occurs at the connection site such as the linkage portion 28 and play between the members. Problems such as sound generation can be avoided. Moreover, since the lock member 22 is a single member in which the portions 24, 26, 36, 38, and 40 are integrally formed, the configuration can be simplified and the number of parts can be reduced. Moreover, since the linkage structure 26 is an integrally formed product in which the linkage portion 28 is connected by the integral hinge 29, there is no synchronization shift between the left and right flange portions 24, 24 due to play between the connected members.

  The locking device 20 causes the lateral guide piece 52 to contact the lateral guide piece 52 when the operating portion 30 is moved up and down, the urging means is urged, and the force from the collar portion 24 is input. The vertical displacement of the portion 24 is restricted, and the collar portion 24 is guided so as to reciprocate while maintaining a linear state extending in the left-right direction. Similarly, the auxiliary support portion 36 and the push-out portion 38 abut on the vertical guide piece 54, so that the left and right displacements are restricted by the vertical guide piece 54, and reciprocate while maintaining a linear state extending in the vertical direction. To be guided. Thus, the locking device 20 can move the locking member 22 more smoothly by defining the movement path of the locking member 22 by the guide means 52 and 54 that can contact the locking member 22. In addition, by defining the movement path of the lock member 22 by the guide means 52 and 54, it is possible to prevent the dispersion of force and the deviation of the transmission direction, and the like. An increase etc. can be avoided and the collar part 24 can be operated more stably.

(Example of change)
The present invention is not limited to the configuration described above, and can be modified as follows, for example.
(1) In the embodiment, each part of the lock member 22 is integrally formed. However, the parts formed separately may be integrally connected by rigid joining. Here, “integrally connected” means that the respective parts constituting the lock member 22 are integrally molded (Example), or even if each part is a separate body, the adjacent parts are fixedly fixed. It means being connected.
(2) The linkage structure 26 is exemplified by the configuration in which the end portions of the linkage portion 28 are hinge-connected by the integral hinge 29. However, the linkage structure 26 is provided at the end portion of the linkage portion 28 as in the modification shown in FIG. Alternatively, a hinge connection structure that rotates around the shaft 27 fitted in the shaft hole may be used.
(3) In the embodiment, the configuration in which the lock member 22 is symmetrical has been described. However, the configuration is not limited to this, and one of the flange portions 24 may be longer than the other flange portion 24. In addition, if the linkage structure has a configuration in which two binding sites located on one diagonal are arranged symmetrically across a line connecting the two binding sites located on the other diagonal, May be a curved shape or a bent shape.
(4) The operation configuration of the lock device is not limited to the embodiment, and various configurations such as a knob type for rotating the operation piece, a type for turning a knob, and a type for pressing with a button can be adopted. Moreover, the part which provides an operation part, such as the structure which provides the operation part in the lock member 22 and directly operates the lock member 22 instead of the structure which operates an operation part, is not specifically limited.
(5) The guide means is not limited to a wall-shaped guide piece, and may be other shapes such as a pillar shape or a rotating body that contacts the lock member 22. Further, a location to be guided can be appropriately selected, such as omitting one of the horizontal guide piece 52 and the vertical guide piece 54.
(6) The configuration may be such that the urging means 32 is omitted and the user operates not only when the lock member 22 is unlocked but also when the lock member 22 is locked.
(7) In the embodiment, the example in which the locking device is applied to the box has been described. The locking device according to the present invention can be applied to the device.

24 collars, 26 linkage structures, 28 linkages, 29 integral hinges,
32 urging means, 38 extruding part

Claims (4)

The four linkages are hinged at the ends, and the coupling sites to which the ends of the linkages are linked are formed in a closed annular shape, and the diagonal coupling sites are displaced in opposite directions. A linkage structure configured to be deformable,
A pair of scissors that are connected to each of the two coupling sites located diagonally of the linkage structure, and reciprocate in opposite directions as the linkage structure is deformed to engage / disengage with the corresponding engagement object. and parts,
Biasing means for biasing the collar portion so as to move in a locking direction for engaging the engagement target ;
The linkage structure is characterized in that two coupling sites located on one diagonal are arranged symmetrically across a line connecting the two coupling sites located on the other diagonal.   The locking device according to claim 1, wherein the linkage structure is connected to the linkage portion by an integral hinge.   The locking device according to claim 1 or 2, wherein the linkage structure and the flange portion are integrally formed.   In the linkage structure, the ribs are provided so as to be linked to the diagonally different connecting portions where the pair of hooks are provided, and the hooks are deformed when the hooks move in the unlocking direction. The locking device according to any one of claims 1 to 3, further comprising an extruding part that guides the object to be disengaged from the engagement target.

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