JP2018071186A - Drawer latch mechanism of cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawer latch mechanism of a cabinet which improves a certainty of action and is able to operate more pleasantly.SOLUTION: A drawer latch mechanism of a cabinet comprises: a driving bar 2 which turns around an axis core along right and left direction while being supported by a front portion of a bottom plate of a drawer; a latch body 3L which is fixed on a top portion of the driving bar 2, and is located at both end of right and left direction of the drawer, and includes portions 32,33 protruding backward, and turns with the driving bar 2; a lock body 4L which is fixed on a side plate 12 and latches to the latch body 3L in a locking state L; an operation body 5 which has a connection member 51 fixed to the driving bar 2, and has an operation member 52 locating on a center portion of right and left direction of a front face of the drawer, and turns the driving bar 2 around the axis core by displacement of forth and back direction of the operation member 52; and elastic pushing means which pushes the latch body 3L in a direction to latch the lock body 4L. When the operation member 52 is pushed, the latch body 3L is unlatched from the lock body 4L and thereby the cabinet becomes an unlocking state UL.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a structure of a latch device that is provided in a cabinet used in an office or the like and prevents unexpected pull-out of drawers.

  There is a drawer latch device that prevents the drawer from unexpectedly jumping forward from the main body during an earthquake or the like with the cabinet drawer housed in the main body (see, for example, Patent Documents 1 to 3).

  Here, in the drawer latch device of Patent Documents 1 and 2, the drawer 4 (drawer 2) is moved left and right by the drawer 4 (drawer 2) at a position where the drawer 4 (drawer 2) is pushed into the main body 1 (housing 1) of the cabinet. A locking piece 18 (latch claw 51) provided at the tip of the connecting rod 17 (operating rod 61) supported so as to be slidable in the direction is a stopper portion 14 (provided on the inner surface side of the side plate of the main body 1 (housing 1)). Lock to the locking projection 53). And since the latching piece 18 (latch claw 51) is elastically urged | biased in the direction latched by the stopper part 14 (locking protrusion 53), the locking state of a latch apparatus is hold | maintained.

  When a push button 19 provided on the front surface of the drawer 4 (drawer 2) is pressed (when the puller 4 is pulled), an operation conversion mechanism that converts the operation in the front-rear direction into the operation in the left-right direction in conjunction with the operation (Patent Document) The connecting rod 17 (operating rod 61) slides against the elastic urging force by the operation converting means 62) of Patent Document 2, such as the one inclined guide portion 20 and the contactor 23. As a result, the locking piece 18 (latch claw 51) is retracted from the stopper portion 14 (locking projection 53) and the locked state is released, so that the drawer 4 (drawer 2) can be pulled out.

  In the drawer latch device disclosed in Patent Document 3, when the drawer 2 is pushed into the housing 1 of the cabinet A so that the drawer 7 is not pulled, the drawer 2 pulls the horizontal axis. The vertical rising portion 8a at the tip of the horizontal pivot shaft 8 that is supported so as to be rotatable about the left and right direction is vertical, and the latch 9 that releases the vertical rising portion 8a around the vertical shaft 10 is released. Not in a position. Therefore, the locking portion 11 protruding inward from the inner side surface 1 a of the housing 1 is engaged with the locking hole 9 b on the side surface of the latch 9. And since the latching hole 9b is elastically urged | biased in the direction engaged with the latching | locking part 11, the locking state of a latch apparatus is hold | maintained.

  When the puller 7 of the drawer 2 is pulled, an operation converting mechanism (the pivotal shaft 8 at the tip of the pivot shaft 8) is converted in association with the operation into a vertical rotation operation around the left-right axis into a horizontal rotation operation around the vertical axis. The latch 9 is rotated around the vertical axis 10 against the elastic biasing force by the vertical rising part 8a and the latch 9 which is provided with the actuating part 9a contacting the vertical rising part 8a and rotates around the vertical axis 10). To do. Thereby, the locking hole 9b of the latch 9 is retracted from the locking portion 11, and the locked state is released, so that the drawer 2 can be pulled out.

Japanese Utility Model Publication No. 62-26522 Japanese Patent No. 2596301 Japanese Patent No. 3368549

  The conventional drawer latch device as described above uses the motion conversion mechanism to release the locked state, and is a structure that converts the motion (change of the direction of the force) by the motion conversion mechanism. There is room for improvement from the viewpoint of improving the certainty of operation and operating more lightly.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a drawer latch device in a cabinet that improves the reliability of operation and can be operated more lightly.

In order to solve the above problems, the drawer latch device in the cabinet according to the present invention includes left and right side plates, a main body having an opening on the front surface, and supported by the side plate so as to be slidable in the front-rear direction. In a cabinet with a haunting drawer,
A latch device capable of switching between a locked state for locking so as to prevent the drawer from jumping out and an unlocked state for releasing the locked state and enabling the drawer to be drawn,
A drive rod which is supported by the front part of the bottom plate of the drawer or the lower part of the front plate of the drawer and rotates around the axis in the left-right direction;
Left and right locking bodies that are fixed to the front end of the drive rod and are positioned at both ends of the drawer in the left-right direction, and rotate with the drive rod;
A lock body fixed to the side plate or a rail supporting the drawer, and locked to the locking body in the locked state;
An operation body arranged on the front surface of the bottom plate of the drawer or the lower front surface of the front plate of the drawer, and an operation body that rotates the drive rod around the axis by operation of the operation portion;
Elastic biasing means for biasing the locking body, the driving rod or the operating body in a direction in which the locking body is locked to the lock body in a state where the drawer is accommodated in the main body;
With
By operating the operation portion, the locking body is released from the lock body and enters the unlocked state in a state where the locking body is rotated against the biasing force of the elastic biasing means. It is characterized (claim 1).

According to such a configuration, the driving rod is rotated by the operation of the operating portion of the operating body, and the left and right engaging bodies fixed to the left and right ends of the driving rod are rotated together with the driving rod. And when a latching body rotates in this way, a latching body will remove | deviate from a lock body, and it will be in the unlocked state which can draw | draw out drawer | drawer.
That is, the operating force acting on the operating portion is directly transmitted from the drive rod to the locking body without rotating the movement (changing the direction of the force) unlike the motion conversion mechanism, and the locking body rotates. , Thereby entering the unlocked state.
Therefore, the malfunction is unlikely to occur, the reliability of the operation of bringing the latch device into the unlocked state can be improved, and the operation for making the unlocked state becomes lighter. In addition, the number of parts of the latch device can be reduced.

  Here, the operating body has a connecting portion that extends in the front-rear direction that connects the operating portion, the connecting portion fixed to the drive rod, and the operating portion and the connecting portion, and is provided in the front-rear direction of the operating portion. It is preferable that the driving rod is rotated around the axis by displacement.

  According to such a configuration, the latch device can be easily unlocked by operating the operation portion in the front-rear direction when the user pulls out the drawer.

  Further, the operation portion has a portion extending upward from the front end portion of the connection portion, and is brought into the unlocked state by an operation of gripping an upper portion of the upward extension portion and a step portion of the front portion of the drawer. (Claim 3).

  According to such a configuration, the latch device is unlocked by a natural operation of gripping the upper part of the operation unit together with the step part as the user grasps the step part at the front part of the drawer and pulls out the drawer. As described above, since the light operation is possible as described above, the latch device can be unlocked without being aware of the operation of the operation unit.

In addition, the locking body includes a rearward extending portion that extends rearward and an outwardly extending portion that extends outward in the left-right direction from the distal end portion of the rearward extending portion,
The lock body includes an inward extending portion that protrudes inward in the left-right direction,
In the locked state, the outward extending portion is positioned behind the inward extending portion and is stopped by the inward extending portion,
When the operation body is operated to rotate the locking body, the upper surface of the outwardly extending portion is positioned below the lower surface of the inwardly extending portion so that the unlocked state is further achieved. Preferred (claim 4).

  According to such a configuration, the latch body of the present invention has a simple configuration in which the locking body includes the rear extension portion and the outward extension portion, and the lock body includes the inward extension portion. A locking body and a lock body, which are parts, can be configured.

  Furthermore, it is also a preferred embodiment that the bottom surface of the lock body is positioned below the lower surface of the outwardly extending portion in the unlocked state (Claim 5).

According to such a configuration, the bottom surface of the lock body is positioned below the lower surface of the outwardly extending portion of the lock body at the position where the lock body is rotated and unlocked.
Therefore, when there are other drawers or shelves on which stored objects such as files and books are placed below the drawer, the upper end of the stored articles may be located above the bottom surface of the lock body. Absent.
Therefore, the stored item does not interfere with the rotating operation of the locking body when the latch device is in the unlocked state, so that a problem that the drawer cannot be pulled out does not occur.
Similarly, when the drawer is pushed into the main body from the position where the drawer is pulled out from the main body, the stored object does not interfere with the rotating operation of the locking body when the latch device changes from the unlocked state to the locked state. There will be no problems that prevent it from entering the body.

The cabinet according to the present invention, a main body having an opening on the front surface,
A door provided with a handle, an electronic lock, and an authentication panel for opening and closing the opening of the main body;
One or more drawers comprising the drawer latch device in the cabinet according to any one of claims 1 to 5, which is located in a lower space of the main body,
It has one or several shelf boards located in the upper space of the said main body (Claim 6).

In a conventional cabinet configuration in which opening door cabinets are often stacked and installed on top of a drawer-type cabinet, those with electronic locks are particularly expensive to manufacture.
On the other hand, according to the configuration of the cabinet of the present invention, a cabinet with an electronic lock combining a drawer type and an open door type can be configured with only one electronic lock, so that the manufacturing cost can be reduced.

  As described above, according to the drawer latch device in the cabinet according to the present invention, the operating force acting on the operation portion located in the center portion in the left-right direction on the front surface of the drawer is directly transmitted from the drive rod to the locking body and locked. Since the body rotates, and the unlocked state in which the drawer can be pulled out is achieved, the reliability of the operation of bringing the latch device into the unlocked state can be improved, and the operation for making the unlocked state is lighter become.

It is the perspective view seen from the diagonally upper right front which shows the state which opened the door body of the cabinet provided with the latch device of the drawer which concerns on embodiment of this invention. It is the perspective view seen from the diagonally upper right front which shows the state which closed the said door body. It is the perspective view which looked at the drawer simple substance from the diagonally upper right front. It is the perspective view which looked at the drawer single body which attached the front board and the partition plate from diagonally right upper front. It is the perspective view which looked at the drawer simple substance from diagonally lower right front. It is the partial exploded perspective view seen from the diagonally lower right front which shows the state which isolate | separated the part attached to the drawer of a latch apparatus from the drawer. It is the disassembled perspective view which looked at the part attached to drawer | drawing-out of a latch apparatus from the diagonally upper left front. It is the partial exploded perspective view seen from the diagonally left lower back which shows the attachment structure to the drawer of the left side edge part supporting member. It is the perspective view which looked at the lock body simple substance from diagonally right upper front, (a) shows the left lock body attached to the left side plate, (b) shows the right lock body attached to the right side plate. It is the partial longitudinal cross-section right side view for operation | movement description around the operating body of a latch apparatus, (a) has shown the locked state, (b) has shown the unlocked state. It is the principal part expansion perspective view seen from the diagonally upper right for operation | movement description of a latch apparatus, (a) has shown the locked state, (b) has shown the unlocked state. It is the principal part expansion longitudinal cross-sectional view similarly seen from the right side, (a) has shown the locked state, (b) has shown the unlocked state.

Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings.
In the present specification, the direction in which the drawer of the cabinet is pulled out is defined as the front, the direction in which the drawer is pushed so as to be accommodated in the main body of the cabinet is defined as the rear, and the left and right are defined in a state of facing backward.

<Cabinet configuration>
As shown in FIGS. 1 and 2, a cabinet 10 according to an embodiment of the present invention is supported to be rotatable about a vertical axis by a main body 11 and upper and lower hinges H, H with respect to the main body 11. The left and right door bodies 17 and 18 are provided.
The door bodies 17 and 18 include an opening / closing operation unit 9 configured by a pull handle, an electronic lock, an authentication panel, and the like, and open / close the opening 11 </ b> A on the front surface of the main body 11.

The main body 11 is formed by left and right side plates 12, 13, a top plate 14, a bottom plate 15, and a back plate 16, and shelf plates 19, 19,... Are disposed in the upper space and front and rear portions are disposed in the lower space by the side plates 12, 13. The drawers 20, 20,... Are slidably supported in the direction.
Moreover, since the cabinet 10 includes the latch device 1 of the drawer 20 which will be described later in detail, it is possible to prevent the drawer 20 from being unexpectedly ejected during an earthquake or the like.
According to such a configuration of the cabinet 10, the drawers 20, 20,... Are provided in the lower space of the main body 11, the shelf plates 19, 19 are provided in the upper space of the main body 11, and the opening 11 </ b> A on the front surface of the main body 11 is opened and closed. The door bodies 17 and 18 with an electronic lock are provided.
Therefore, since the cabinet 10 with an electronic lock which combined the drawer | drawing-out type | mold and the opening door type | mold with only one electronic lock can be comprised, manufacturing cost can be reduced.
Note that the cabinet to which the drawer latch device 1 in the cabinet of the present invention is applied may be a fully open type without a door.

As shown in FIG. 3, the drawer 20 is composed of a bottom plate 21, side plates 22 and 23 erected on both left and right ends of the bottom plate 21, a back plate 24 erected on the rear end of the bottom plate 21, and the like. It is a shelf.
FIG. 4 shows a state in which the front plate 26 and the partition plate 27 are attached to the drawer 20. By attaching the front plate 26, it is possible to store documents and the like so as to be arranged in the front-rear direction.

<Configuration of drawer latch device>
The latch device 1 of the drawer 20 according to the embodiment of the present invention includes a portion attached to the drawer 20 shown in FIGS. 5 to 8 and FIGS. 10 (a) and 10 (b), and FIGS. It consists of the part (lock body 4L, 4R) attached to the side plates 12 and 13 of the main body 11 shown to a) and FIG.11 (b).
Here, the component parts of the latch device 1 have a plane-symmetric shape with the vertical plane at the center in the left-right direction of the drawer 20 and the main body 11 as the plane of symmetry.

(Part to be attached to the drawer)
First, with reference to FIGS. 5 to 8 and FIGS. 10 (a) and 10 (b), the configuration of the portion attached to the drawer 20 in the latch device 1 will be described.
The parts attached to the drawer 20 in the latch device 1 are the drive rod 2, the locking bodies 3L and 3R, the operation body 5, the center support member 7, the end support members 8L and 8R, and the torsion that is the elastic biasing means. It consists of coil springs 6 and 6.

  The drive rod 2 is made of steel having a quadrangular cross section, and is supported by the front portion of the bottom plate 21 of the drawer 20 so as to rotate around the axis in the left-right direction. Depending on the structure of the drawer 20, the drive rod 20 may be supported by the lower portion of the front plate located on the front side of the bottom plate 21.

The locking bodies 3L, 3R are made of synthetic resin, and the left and right end portions (tip portions) of the drive rod 2 are fitted into the engagement holes 31B of the connecting portion 31, so that they are fixed to both end portions of the drive rod 2. .
The locking bodies 3L and 3R include a rear extension 32 extending rearward and an outer extension 33 extending outward in the left-right direction from the tip of the rear extension 32.
The locking bodies 3L and 3R are not limited to the shape including the rear extension portion 32 and the outward extension portion 33, but may have a shape that can be engaged with and disengaged from the lock bodies 4L and 4R. That's fine.

The operation body 5 is made of synthetic resin, and when the driving rod 2 is fitted into the engaging recess 51B and the connecting portion 51 fixed to the center portion in the left-right direction of the driving rod 2 and the locking state of the latch device 1 are released. And an connecting portion 53 that extends in the front-rear direction and connects the connecting portion 51 and the operating portion 52.
The operating body 5 attaches the drive rod 2 to the connecting portion 51 after inserting the connecting portion 51 and the connecting portion 53 from the front of the insertion opening 21 </ b> A (FIG. 6) formed on the front surface of the bottom plate 21 of the drawer 20.
Here, the operating portion 52 (see FIGS. 1 and 3 to 5) exposed to the front side of the operating body 5 from the insertion opening 21 </ b> A (the front surface of the bottom plate 21) in FIG. 6 has a small forward protrusion length. Therefore, even if a fallen object collides, it is not easily damaged by the impact force.

  The central support member 7 is made of synthetic resin, and is inserted through the elastic locking claw 7B formed on the front surface of the bottom plate 21 of the drawer 20 in a state where the connecting portion 51 of the operating body 5 is accommodated in the arc-shaped guide hole 7A. The elastic locking claw 7C is locked to the opening 21A (FIG. 6 and FIG. 10A), and the elastic locking claw 7C is locked to the engagement hole 21B (FIG. 6) formed in the front portion of the bottom plate 21. It attaches so that it may latch in 21C (FIG.6 and FIG.10 (a)) formed in the front part (front reinforcement 25) of the baseplate 21. FIG.

The end support members 8L and 8R are made of synthetic resin, and after the locking bodies 3L and 3R are attached so that the coupling portions 31 of the locking bodies 3L and 3R are fitted into the circular hole-shaped guide holes 8A. The left and right ends of the drive rod 2 are fitted into the engagement holes 31B of the connecting portions 31 of the locking bodies 3L and 3R.
In this state, the end support members 8L and 8R are attached to the drawer 20.

Since the left and right end support members 8L and 8R are attached in the same manner, the left end support member 8L will be described.
As shown in FIG. 8, the engagement hole 21 </ b> D formed on the front rear surface of the bottom plate 21 of the drawer 20 so that the lower surface of the protruding piece 8 </ b> D is in contact with the upper surface 25 </ b> A of the front reinforcement 25. The elastic locking claw 8C is attached from below so as to be locked in the engaging hole 22A formed on the outer surface of the front lower portion of the side plate 22 of the drawer 20.

As described above, when the portion attached to the drawer 20 of the latch device 1 is attached to the drawer 20 as shown in FIG. 5, the connecting portion 51 of the operating body 5 is inserted into the guide hole 7A of the central support member 7 shown in FIG. The cylindrical surface 51A is inscribed, and the cylindrical surface 31A of the connecting portion 31 of the locking bodies 3L and 3R is inscribed in the guide holes 8A of the end support members 8L and 8R shown in FIG.
Therefore, the operating body 5, the driving rod 2, and the locking bodies 3 </ b> L and 3 </ b> R can be integrally rotated around the axis of the driving rod 2 while being supported by the front portion of the bottom plate 21 of the drawer 20. Become.

As shown in FIG. 10A, the operation unit 52 of the latch device 1 has a portion extending upward from the front end portion of the connection portion 53 extending in the front-rear direction. The lower part of the operation unit 52 is substantially parallel to the front surface of the bottom plate 21 of the drawer 20 (or the lower front surface of the front plate of the drawer 20), and the upper part of the operation unit 52 gradually protrudes forward as it goes upward. It has a curved shape.
As the user grasps the step D at the front part of the drawer 20 and pulls out the drawer 20, the user grasps the upper part of the operation unit 52 together with the step D, so that the operation is performed as shown in FIG. The upper part of the part 52 is pushed to the drawer 20 side (arrow A in FIG. 11A). Therefore, as shown by the arrow B in FIG. 11A, the operating body 5, the drive rod 2, and the locking bodies 3L and 3R rotate together.

The torsion coil springs 6 and 6 as elastic biasing means shown in FIGS. 7 and 8 are mounted between the end support member 8L and the locking body 3L, and between the end support member 8R and the locking body 3R. The
The torsion coil springs 6 and 6 have their elastic restoring force in a state where the drawer 20 is accommodated in the main body 11 of the cabinet 10 as shown in FIG. , 4R acts in the direction (the direction opposite to the arrow C in FIG. 11A).
Since the locking bodies 3L and 3R, the driving rod 2 and the operating body 5 rotate as a unit, the elastic biasing means uses the elastic restoring force as the locking bodies 3L and 3R and the driving rod 2. Alternatively, the operating body 5 may be actuated in the aforementioned direction by urging the operating body 5.

(The part attached to the side plate of the main unit)
Next, with reference to FIG. 9A, FIG. 9B, and FIG. 11A, the configuration of the portions (lock bodies 4L, 4R) attached to the side plates 12, 13 of the main body 11 in the latch device 1 is described. explain.
The lock body 4L shown in FIG. 9A is attached to the inner surface of the left side plate 12 as shown in FIG. 11A, and the lock body 4R shown in FIG. That is, by inserting the base end side portion of the main body 41 of the lock bodies 4L and 4R into the engagement holes (not shown) of the side plates 12 and 13, the elastic locking claws 41B are locked and prevented from coming off.

The lock bodies 4L and 4R may be attached to the rail that supports the drawer 20 instead of the side plates 12 and 13.
The lock bodies 4L and 4R are made of synthetic resin, and project inwardly in the left-right direction, the rear wall part 43 positioned behind the inwardly-extending part 42, and the upper part of the rear wall part 43. A front extending portion 44 extending forward from the front end.

<Operation of drawer latch device>
Next, referring to FIG. 1, FIG. 10 (a) and FIG. 10 (b), FIG. 11 (a) and FIG. 11 (b), and FIG. 12 (a) and FIG. Will be described.
When the operation unit 52 is not operated at the position where the drawer 20 shown in FIG. 1 is pushed into the main body 11, the locked state shown in FIGS. 10 (a), 11 (a), and 12 (a). L.
That is, as shown in FIG. 12A, the outwardly extending portion 33 of the locking body 3L (3R) is located behind the inwardly extending portion 42 of the lock body 4L (4R), and the lock body 4L (4R) The upper surface 33A of the outward extending portion 33 is stopped against the lower surface 44A of the front extending portion 44 of the rear wall 43.
Therefore, the uppermost position of the outward extending portion 33 elastically urged by the torsion coil spring 6 is restricted, and the front surface 33C of the outward extending portion 33 is restricted to the inward extending portion 42 in such a restricted state. The drawer 20 cannot be moved forward because it is stopped by the rear surface 42C.

In such a locked state L, when the user performs an operation of pulling out the drawer 20 by grasping the front step D of the drawer 20 in FIG. 10A in order to pull out the drawer 20 of FIG. Accordingly, the user holds the upper portion of the operation unit 52 together with the stepped portion D.
As a result, as indicated by an arrow A in FIG. 11A, the upper portion of the operation portion 52 of the operation body 5 is pushed backward against the elastic biasing force of the torsion coil spring 6, and as described above, Since the driving rod 2 and the locking bodies 3L and 3R rotate together as indicated by an arrow B, the unlocked state UL shown in FIGS. 10B, 11B, and 12B is obtained. .
In such an unlocked state UL, the locking body 3L (3R) has its outwardly extending portion 33 lowered as shown by an arrow C in FIG. 11A, as shown in FIG. Since the upper surface 33A of the outwardly extending portion 33 is positioned below the lower surface 42A of the inwardly extending portion 42 of the lock body 4L (4R), the drawer 20 can be pulled forward from the main body 11.

When the drawer 20 is pushed into the main body 11 from the position where the drawer 20 is pulled out from the main body 11, the drawer 20 is accommodated in the main body 11 with the operation of pushing the drawer 20 without operating the operation unit 52. In the position, it returns to the locked state L shown in FIGS. 10 (a), 11 (a) and 12 (a).
That is, the upper surface 33A of the outwardly extending portion 33 of the locking body 3L (3R) is an inclined surface that descends toward the rear, and the front surface 42B of the inwardly extending portion 42 of the lock body 4L (4R) is downward. It is an inclined surface that recedes as it goes to. Therefore, the upper surface 33A of the outward extending portion 33 moves rearward along the inclined surface of the front surface 42B of the inward extending portion 42 as the drawer 20 is pushed in, and the locking body 3L (3R) is driven. Since the heel 2 and the operating body 5 rotate, the outward extending portion 33 can pass through the inward extending portion 42. And in the position which accommodated the drawer 20 in the main body 11, it will be in the locking state L shown to Fig.10 (a), Fig.11 (a), and Fig.12 (a) by the elastic biasing force of the torsion coil spring 6. FIG.

  In the above, the configuration in which the operation body 5 is rotated by the displacement of the operation section 52 in the front-rear direction has been described. However, the operation section for rotating the operation body 5 may be a push button type or a left-right slide type. The configuration is not limited to the configuration in which the operating body 5 is rotated by displacement in the front-rear direction.

In the position where the locking body 3L (3R) shown in FIG. 12B is rotated to the unlocked state UL, the locking body 3L (3R) is locked more than the lower surface 33B of the outwardly extending portion 33. The bottom surface 41A of the main body 41 of the body 4L (4R) is positioned below.
Therefore, when there is another drawer 20 on which a storage object such as a file or a book is placed below the drawer 20, the upper end of the storage object (for example, a two-dot chain line in FIG. 12B). E) is not positioned above the bottom surface 41A of the lock body 4L (4R).
Therefore, the stored items do not interfere with the rotating operation of the locking bodies 3L and 3R when the latch device 1 is in the unlocked state UL, so that the problem that the drawer 20 cannot be pulled out does not occur.
Similarly, when the drawer 20 is pushed into the main body 11 from the position where the drawer 20 is pulled out from the main body 11 and the latch device 1 is changed from the unlocked state UL to the locked state L, the rotating bodies 3L and 3R are rotated. Since the stored items do not disturb, there is no problem that the drawer 20 does not enter the main body 11.

According to the latch device 1 as described above, the drive rod 2 is rotated by the operation of the operation portion 52 of the operation body 5, and the left and right engaging bodies 3L and 3R fixed to both the left and right ends of the drive rod 2. Rotates together with the drive rod 2. When the locking bodies 3L and 3R are thus rotated, the locking bodies 3L and 3R are detached from the lock bodies 4L and 4R (the upper surface 33A of the outwardly extending portion 33 of the locking bodies 3L and 3R is the lock body). 4L and 4R are located below the lower surface 42A of the inwardly extending portion 42), and the drawer 20 can be pulled forward from the main body 11.
That is, the operating force acting on the operating portion 52 is directly transmitted from the drive rod 2 to the locking bodies 3L and 3R, so that the locking bodies 3L and 3R rotate and thereby enter the unlocked state UL. It is difficult to occur, and the reliability of the operation of setting the latch device 1 to the unlocked state UL can be improved, and the operation for setting the unlocked state UL becomes lighter. In addition, the number of parts of the latch device can be reduced.

In addition, the operation portion 52 of the operation body 5 has a portion extending upward from the front end portion of the connection portion 53, and by an operation of gripping the upper portion of the portion extending upward and the step portion D of the front portion of the drawer 20. The latch device 1 enters the unlocked state UL.
Therefore, the latch device 1 is unlocked by a natural operation of gripping the upper portion of the operation portion 52 together with the step portion D as the user grasps the step portion D at the front portion of the drawer 20 and pulls out the drawer 20. Since it becomes UL and a light operation is possible as described above, the latch device 1 can be brought into the unlocked state UL without being aware of the operation of the operation unit 52.
In particular, since the upper portion of the operation unit 52 has a curved shape so that it gradually protrudes forward as it goes upward as described above, the user naturally touches the operation unit 52 with his finger upward. Since the movement is rubbed up, the operation of holding the upper portion of the operation unit 52 together with the stepped portion D to bring the latch device 1 into the unlocked state UL becomes more natural.

DESCRIPTION OF SYMBOLS 1 Latch apparatus 2 Drive rod 3L, 3R Locking body 4L, 4R Lock body 5 Operation body 6 Torsion coil spring (elastic biasing means)
7 Central support member 7A Guide hole 7B, 7C, 7D Elastic locking claw 8A Guide hole 8B, 8C Elastic locking claw 8D Projection piece 8L, 8R End support member 9 Opening / closing operation part 10 Cabinet 11 Main body 11A Opening part 12, 13 Side plate 14 Top plate 15 Bottom plate 16 Back plate 17, 18 Door 19 Shelf plate 20 Drawer 21 Bottom plate 21A Insertion opening 21B, 21C, 21D Engagement hole 22, 23 Side plate 22A Engagement hole 24 Back plate 25 Front reinforcement 25A Upper surface 26 Front Plate 27 Partition plate 31 Connecting portion 31A Cylindrical surface 31B Engagement hole 32 Backward extending portion 33 Outwardly extending portion 33A Upper surface 33B Lower surface 33C Front surface 41 Main body 41A Bottom surface 41B Elastic locking claw 42 Inwardly extending portion 42A Lower surface 42B Front surface 42C Rear surface 43 Rear wall portion 44 Front extension portion 44A Lower surface 51 Connection portion 51A Cylindrical surface 51B Engaging recess 52 Operation portion 53 Connection portion H Hinge L Locked state UL Unlocked state

Claims (6)

In a cabinet that includes left and right side plates, a main body having an opening on the front surface, and a drawer that is slidably supported by the side plates in the front-rear direction and protrudes and retracts from the opening,
A latch device capable of switching between a locked state for locking so as to prevent the drawer from jumping out and an unlocked state for releasing the locked state and enabling the drawer to be drawn,
A drive rod which is supported by the front part of the bottom plate of the drawer or the lower part of the front plate of the drawer and rotates around the axis in the left-right direction;
Left and right locking bodies that are fixed to the front end of the drive rod and are positioned at both ends of the drawer in the left-right direction, and rotate with the drive rod;
A lock body fixed to the side plate or a rail supporting the drawer, and locked to the locking body in the locked state;
An operation body arranged on the front surface of the bottom plate of the drawer or the lower front surface of the front plate of the drawer, and an operation body that rotates the drive rod around the axis by operation of the operation portion;
Elastic biasing means for biasing the locking body, the driving rod or the operating body in a direction in which the locking body is locked to the lock body in a state where the drawer is accommodated in the main body;
With
By operating the operation portion, the locking body is released from the lock body and enters the unlocked state in a state where the locking body is rotated against the biasing force of the elastic biasing means. Features
Latch device for drawer in cabinet. The operating body includes the operating portion, a connecting portion fixed to the driving rod, and a connecting portion extending in the front-rear direction that connects the operating portion and the connecting portion.
The driving rod is rotated around the axis by the displacement of the operation part in the front-rear direction.
The drawer latch device in the cabinet according to claim 1. The operation portion has a portion extending upward from the front end portion of the connection portion, and is brought into the unlocked state by an operation of gripping an upper portion of the portion extending upward and a step portion of the front portion of the drawer.
The drawer latch device in the cabinet according to claim 1 or 2. The locking body includes a rear extension part extending rearward and an outer extension part extending outward in the left-right direction from the tip of the rear extension part,
The lock body includes an inward extending portion that protrudes inward in the left-right direction,
In the locked state, the outward extending portion is positioned behind the inward extending portion and is stopped by the inward extending portion,
When the operating body is operated to rotate the locking body, the upper surface of the outward extending portion is positioned below the lower surface of the inward extending portion and is in the unlocked state.
The drawer latch apparatus in the cabinet of any one of Claims 1-3. The bottom surface of the lock body is positioned below the lower surface of the outwardly extending portion in the unlocked state.
The drawer latch device in the cabinet according to claim 4. A main body having an opening on the front surface;
A door provided with a handle, an electronic lock, and an authentication panel for opening and closing the opening of the main body;
One or more drawers comprising the drawer latch device in the cabinet according to any one of claims 1 to 5, which is located in a lower space of the main body,
One or more shelf boards located in the upper space of the main body;
With cabinet.

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