JP6874328B2 - Drawer latching device in cabinet - Google Patents

Description

The present invention relates to a structure of a latch device provided in a cabinet used in an office or the like to prevent a drawer from unexpectedly popping out.

There is a drawer latch device that prevents the drawer from suddenly jumping forward from the main body in the event of an earthquake or the like while the drawer of the cabinet is 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, at the position where the drawer 4 (drawer 2) is pushed so as to be accommodated in the main body 1 (casing 1) of the cabinet, the drawer 4 (drawer 2) is used to move left and right. The locking piece 18 (latch claw 51) provided at the tip of the connecting drawer 17 (operating drawer 61) slidably supported in the direction is a stopper portion 14 (latch claw 51) provided on the inner surface side of the side plate of the main body 1 (cabinet 1). It is locked to the locking projection 53). Since the locking piece 18 (latch claw 51) is elastically urged in the direction of locking to the stopper portion 14 (locking protrusion 53), the locked state of the latch device is maintained.

When the push button 19 provided on the front surface of the drawer 4 (drawer 2) is pressed (when the puller 4 is pulled), an motion conversion mechanism that converts the motion in the front-rear direction into the motion 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 motion converting means 62) of Patent Document 2, such as the tilting guide portion 20 and the touch button 23 of 1. As a result, the locking piece 18 (latch claw 51) retracts from the stopper portion 14 (locking protrusion 53) and the locked state is released, so that the drawer 4 (drawer 2) can be pulled out.

Further, in the drawer latch device of Patent Document 3, in a state where the drawer 2 is pushed so as to be housed in the housing 1 of the cabinet A and the puller 7 of the drawer 2 is not pulled, the drawer 2 is used for the left-right direction axis. The vertical rising portion 8a at the tip of the horizontal pivot shaft 8 extending in the left-right direction, which is rotatably supported around, is vertical, and the latch 9 in which the vertical rising portion 8a rotates around the vertical axis 10 is released. It is in a position where it does not. Therefore, the locking portion 11 protruding inward from the inner side surface 1a of the housing 1 engages with the locking hole 9b on the side surface of the latch 9. Since the locking hole 9b is elastically urged in the direction of engaging with the locking portion 11, the locked state of the latch device is maintained.

When the puller 7 of the drawer 2 is pulled, the motion conversion mechanism (at the tip of the pivot shaft 8) that converts the vertical rotation motion around the left-right axis into the lateral rotation motion around the vertical axis in conjunction with the operation. The latch 9) is provided with a vertical rising portion 8a and an operating rod portion 9a that abuts on the vertical rising portion 8a and rotates around the vertical axis 10), so that the latch 9 rotates around the vertical axis 10 against elastic urging force. To do. As a result, the locking hole 9b of the latch 9 retracts from the locking portion 11 and the locked state is released, so that the drawer 2 can be pulled out.

Jikken Sho 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 has a structure that converts the motion (conversion of the direction of force) by the motion conversion mechanism. There is room for improvement from the viewpoint of improving the certainty of operation and operating it more lightly.

Therefore, an object of the present invention is to provide a drawer latch device in a cabinet that can be operated more easily by improving the certainty of operation.

In order to solve the above problem, the drawer latch device in the cabinet according to the present invention includes a main body including left and right side plates and has an opening on the front surface, and is supported by the side plates so as to be slidable in the front-rear direction from the opening. In a cabinet with infested drawers
A latch device capable of switching between a locked state in which the drawer is locked so as to prevent the drawer from popping out and an unlocked state in which the locked state is released so that the drawer can be pulled out.
A drive rod that 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 fixed to the tip of the drive rod, located at both ends of the drawer in the left-right direction, and rotating together with the drive rod.
A lock body fixed to the side plate or a rail supporting the drawer and locked to the lock body in the locked state, and a lock body.
An operating body having an operation unit 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 rotating the drive rod around the axis by operating the operation unit.
An elastic urging means for urging the locking body, the driving rod, or the operating body in a direction in which the locking body locks the lock body with the drawer housed in the main body.
With
The operation of the operation unit, in a state in which rotating the locking member against the biasing force of said resilient biasing means, Ri Do the unlocked state the locking member is disengaged from said lock body,
The operating body has a connecting portion fixed to the operating rod, a connecting portion fixed to the driving rod, and a connecting portion extending in the front-rear direction connecting the operating portion and the connecting portion.
The drive rod rotates around the axis due to the displacement of the operation unit in the front-rear direction (claim 1).

According to such a configuration, the drive rod is rotated by the operation of the operation unit of the operating body, and the left and right locking bodies fixed to both ends of the drive rod in the left-right direction rotate together with the drive rod. Then, when the locking body rotates in this way, the locking body is disengaged from the locked body, and the drawer is in an unlocked state in which the drawer can be pulled out.
That is, the operating force acting on the operation unit is directly transmitted from the drive rod to the locking body without converting the motion (changing the direction of the force) as in the motion conversion mechanism, and the locking body rotates. As a result, the unlocked state is reached.
Therefore, malfunction is unlikely to occur, the certainty of the operation of putting the latch device in the unlocked state can be improved, and the operation for putting the latch device in the unlocked state becomes lighter. Moreover, the number of parts of the latch device can be reduced.

Moreover , the latch device can be easily unlocked by operating the operation unit in the front-rear direction when the user pulls out the drawer.

Further, in order to solve the above-mentioned problem, the drawer latch device in the cabinet according to the present invention includes a main body having an opening on the front surface including left and right side plates, and is supported by the side plates so as to be slidable in the front-rear direction. In a cabinet with drawers that haunt the section
A latch device capable of switching between a locked state in which the drawer is locked so as to prevent the drawer from popping out and an unlocked state in which the locked state is released so that the drawer can be pulled out.
A drive rod that 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 fixed to the tip of the drive rod, located at both ends of the drawer in the left-right direction, and rotating together with the drive rod.
A lock body fixed to the side plate or a rail supporting the drawer and locked to the lock body in the locked state, and a lock body.
An operating body having an operation unit 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 rotating the drive rod around the axis by operating the operation unit.
An elastic urging means for urging the locking body, the driving rod, or the operating body in a direction in which the locking body locks the lock body with the drawer housed in the main body.
With
By operating the operation unit, the locking body is disengaged from the locking body to be in the unlocked state while the locking body is rotated against the urging force of the elastic urging means.
The operating body has a connecting portion fixed to the operating rod, a connecting portion fixed to the driving rod, and a connecting portion extending in the front-rear direction connecting the operating portion and the connecting portion .
The operation unit 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 the upper portion of the portion extending upward and the step portion of the front portion of the drawer ( claim). Item 2 ).

According to such a configuration, the drive rod is rotated by the operation of the operation unit of the operating body, and the left and right locking bodies fixed to both ends of the drive rod in the left-right direction rotate together with the drive rod. Then, when the locking body rotates in this way, the locking body is disengaged from the locked body, and the drawer is in an unlocked state in which the drawer can be pulled out.
That is, the operating force acting on the operation unit is directly transmitted from the drive rod to the locking body without converting the motion (changing the direction of the force) as in the motion conversion mechanism, and the locking body rotates. As a result, the unlocked state is reached.
Therefore, malfunction is unlikely to occur, the certainty of the operation of putting the latch device in the unlocked state can be improved, and the operation for putting the latch device in the unlocked state becomes lighter. Moreover, the number of parts of the latch device can be reduced.
In addition, as the user grasps the step portion of the front part of the drawer and pulls out the drawer, the latch device is unlocked and the latch device is unlocked by the natural operation of grasping the upper part of the operation portion together with the step portion. Since the operation can be performed lightly as described above, the latch device can be unlocked without being aware of the operation of the operation unit.

Further, in order to solve the above-mentioned problem, the drawer latch device in the cabinet according to the present invention includes a main body having an opening on the front surface including left and right side plates, and is supported by the side plates so as to be slidable in the front-rear direction. In a cabinet with drawers that haunt the section
A latch device capable of switching between a locked state in which the drawer is locked so as to prevent the drawer from popping out and an unlocked state in which the locked state is released so that the drawer can be pulled out.
A drive rod that 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 fixed to the tip of the drive rod, located at both ends of the drawer in the left-right direction, and rotating together with the drive rod.
A lock body fixed to the side plate or a rail supporting the drawer and locked to the lock body in the locked state, and a lock body.
An operating body having an operation unit 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 rotating the drive rod around the axis by operating the operation unit.
An elastic urging means for urging the locking body, the driving rod, or the operating body in a direction in which the locking body locks the lock body with the drawer housed in the main body.
With
By operating the operation unit, the locking body is disengaged from the locking body to be in the unlocked state while the locking body is rotated against the urging force of the elastic urging means.
The locking body includes a rear extending portion extending rearward and an outward extending portion extending outward in the left-right direction from the tip end portion of the rear extending portion.
The lock body includes an inward extending portion that projects inward in the left-right direction.
In the locked state, the outward extending portion is located behind the inward extending portion and is held by the inward extending portion.
When the locking body is rotated by operating the operating portion, the upper surface of the outward extending portion is located below the lower surface of the inward extending portion and is in the unlocked state ( claim 3 ). ).

According to such a configuration, the drive rod is rotated by the operation of the operation unit of the operating body, and the left and right locking bodies fixed to both ends of the drive rod in the left-right direction rotate together with the drive rod. Then, when the locking body rotates in this way, the locking body is released from the locked body, and the drawer is in an unlocked state in which the drawer can be pulled out.
That is, the operating force acting on the operation unit is directly transmitted from the drive rod to the locking body without converting the motion (changing the direction of the force) as in the motion conversion mechanism, and the locking body rotates. As a result, the unlocked state is reached.
Therefore, malfunction is unlikely to occur, the certainty of the operation of putting the latch device in the unlocked state can be improved, and the operation for putting the latch device in the unlocked state becomes lighter. Moreover, the number of parts of the latch device can be reduced.
Further, the locking body is provided with a rear extending portion and an outward extending portion, and the locking body is provided with an inward extending portion. The locking body is a main component of the latch device of the present invention in a simple shape. A body and a lock body can be constructed.

Further, it is also a preferred embodiment that the bottom surface of the lock body is located below the lower surface of the outward extending portion in the unlocked state (claim 4 ).

According to such a configuration, the bottom surface of the lock body is located below the lower surface of the outward extending portion of the lock body at the position where the lock body is rotated and unlocked.
Therefore, when there is another drawer or shelf on which a shape-retaining storage item such as a file or a book is placed below the drawer, the upper end of the storage item may be located above the bottom surface of the lock body. Absent.
Therefore, since the stored object does not interfere with the rotation operation of the locking body when the latch device is unlocked, the problem that the drawer cannot be pulled out does not occur.
Similarly, the drawer is pushed into the main body from the position where the drawer is pulled out from the main body, and the drawer does not interfere with the rotation operation of the locking body when the latch device changes from the unlocked state to the locked state. There is no problem of not being able to enter the main body.

The cabinet according to the present invention includes a main body having an opening on the front surface and a main body.
A door body equipped with a pull tab, an electronic lock, and an authentication panel that opens and closes the opening of the main body.
A single or multiple drawers with a drawer latching device in the cabinet according to any one of claims 1 to 4 , located in the space below the body.
It has one or more shelves located in the space above the main body (claim 5 ).

In the conventional cabinet configuration in which a cabinet with a hinged door is often stacked on top of a drawer-type cabinet, the one with an electronic lock has a particularly high manufacturing cost.
On the other hand, according to the cabinet configuration of the present invention, a cabinet with an electronic lock that combines a drawer type and a hinged 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 operating portion located at the center of the front surface of the drawer in the left-right direction is directly transmitted from the drive rod to the locking body to lock. Since the body rotates and the drawer is in an unlocked state in which the drawer can be pulled out, the certainty of the operation of putting the latch device in the unlocked state can be improved, and the operation for putting the drawer in the unlocked state is lighter. become.

It is a perspective view seen from the diagonally upper right front which shows the state which the door body of the cabinet provided with the latch device of the drawer which concerns on embodiment of this invention is opened. It is a perspective view seen from the diagonally upper right front which shows the state which the door body is closed. It is a perspective view which saw the drawer alone from the diagonally upper right front. It is a perspective view of the drawer unit which attached the front plate and the partition plate, seen from the diagonally upper right front. It is a perspective view which saw the drawer alone from the diagonally lower right front. It is a partially decomposed perspective view seen from the diagonally lower right front which shows the state which the part attached to the drawer of a latch device is separated from the drawer. It is an exploded perspective view of the part attached to the drawer of the latch device seen from the diagonally upper left front. It is a partially disassembled perspective view seen from the diagonally lower left rear view which shows the attachment structure of the left end support member to a drawer. It is a perspective view which saw the lock body alone from the diagonally upper right front, (a) shows the left lock body attached to a left side plate, and (b) shows the right side lock body attached to a right side plate. It is the right side view of the partial vertical section for explaining the operation around the operation body of the latch device, (a) shows the locked state, and (b) shows the unlocked state. It is an enlarged perspective view of a main part viewed from diagonally upper right for explaining the operation of the latch device, (a) shows a locked state, and (b) shows an unlocked state. Similarly, it is an enlarged vertical sectional view of a main part seen from the right side, where (a) shows a locked state and (b) shows an 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, the cabinet 10 according to the embodiment of the present invention is rotatably supported around the vertical axis by the main body 11 and the upper and lower hinges H and H with respect to the main body 11. The left and right door bodies 17, 18 and the like are provided.
The door bodies 17 and 18 include an opening / closing operation unit 9 composed of a pull tab, an electronic lock, an authentication panel, and the like, and open / close the opening 11A on the front surface of the main body 11.

The main body 11 is formed by left and right side plates 12, 13, top plate 14, bottom plate 15, and back plate 16, and shelves 19, 19, ... Are placed in the upper space, and side plates 12, 13 are used in the lower space. Drawers 20, 20, ... Sliding in the direction are provided.
Further, since the cabinet 10 is provided with the latch device 1 of the drawer 20, which will be described in detail later, it is possible to prevent the drawer 20 from unexpectedly popping out in the event of an earthquake or the like.
According to such a configuration of the cabinet 10, drawers 20, 20, ... Are provided in the space below the main body 11, shelves 19 and 19 are provided in the space above the main body 11, and the opening 11A on the front surface of the main body 11 is opened and closed. The door bodies 17 and 18 with electronic locks are provided.
Therefore, since the cabinet 10 with an electronic lock that combines the drawer type and the hinged door type can be configured with only one electronic lock, the manufacturing cost can be reduced.
The cabinet to which the drawer latch device 1 of the cabinet of the present invention is applied may be a fully open type without a door body.

As shown in FIG. 3, the drawer 20 is a front open type including a bottom plate 21, side plates 22 and 23 erected at both left and right ends of the bottom plate 21, and a back plate 24 erected at the rear end of the bottom plate 21. It has a shelf-like shape.
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 stand up and store documents and the like so as to be arranged in the front-rear direction.

<Structure of drawer latch device>
The latch device 1 of the drawer 20 according to the embodiment of the present invention includes a portion to be attached to the drawer 20 shown in FIGS. 5 to 8 and 10 (a) and 10 (b), and FIGS. 9 and 11 (FIG. 11). It is composed of a) and portions (lock bodies 4L, 4R) attached to the side plates 12 and 13 of the main body 11 as shown in FIG. 11 (b).
Here, the components of the latch device 1 have a plane-symmetrical shape with the vertical plane at the center of the drawer 20 and the main body 11 in the left-right direction as a symmetrical plane.

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

The drive rod 2 is made of steel having a quadrangular cross section, is supported by the front portion of the bottom plate 21 of the drawer 20, and rotates 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 and 3R are made of synthetic resin, and since 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, they are fixed to both ends of the drive rod 2. ..
Further, the locking bodies 3L and 3R include a rear extending portion 32 extending rearward and an outward extending portion 33 extending outward in the left-right direction from the tip end portion of the rear extending portion 32.
The locking bodies 3L and 3R are not limited to a shape including the rear extending portion 32 and the outward extending portion 33, and may have a shape capable of engaging and disengaging with the locking bodies 4L and 4R. Just do it.

The operating 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 central portion in the left-right direction of the driving rod 2 and the latch device 1 are unlocked. It is composed of an operation unit 52 to be operated, and a connection unit 53 extending in the front-rear direction connecting the connection unit 51 and the operation unit 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 21A (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 insertion opening 21A (front surface of the bottom plate 21) of FIG. 6 in the operating body 5 has a small forward protrusion length. Therefore, even if a falling object or the like collides, it is unlikely to be damaged by the impact force.

The central support member 7 is made of synthetic resin, and the elastic locking claw 7B is 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 housed in the arc-shaped guide hole 7A. The elastic locking claw 7C is locked in the opening 21A (FIGS. 6 and 10A), and the elastic locking claw 7C is locked in the engaging hole 21B (FIG. 6) formed in the front portion of the bottom plate 21. It is attached so as to be locked in the engagement hole 21C (FIGS. 6 and 10 (a)) formed in the front portion (front reinforcement 25) of the bottom plate 21.

The end support members 8L and 8R are made of synthetic resin, and after the locking bodies 3L and 3R are attached so as to fit the connecting portions 31 of the locking bodies 3L and 3R into the round 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 that state, the end support members 8L and 8R are attached to the drawer 20.

Since the mounting methods of the left and right end support members 8L and 8R are the same, the left end support member 8L will be described.
As shown in FIG. 8, the engaging holes 21D formed so that the lower surface of the projecting piece 8D is in contact with the upper surface 25A of the front reinforcing 25 and the elastic locking claws 8B and 8B are formed on the front rear surface of the bottom plate 21 of the drawer 20. The elastic locking claw 8C is attached from below so as to be locked in the engaging hole 22A formed on the front lower outer surface of the side plate 22 of the drawer 20.

As described above, in the state where the portion to be 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 connected to the guide hole 7A of the central support member 7 shown in FIG. The cylindrical surface 51A of the above 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 rods 2, and the locking bodies 3L, 3R can rotate together 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 operating portion 52 of the latch device 1 has a portion extending upward from the front end portion of the connecting portion 53 extending in the front-rear direction. The lower portion 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 portion of the operation unit 52 gradually protrudes forward as it goes upward. It has a curved shape.
As the user grasps the step portion D at the front of the drawer 20 and pulls out the drawer 20, the user grips the upper portion of the operation portion 52 together with the step portion D, and thus operates as shown in FIG. 10 (b). The upper part of the portion 52 is pushed toward the drawer 20 side (arrow A in FIG. 11A). Therefore, as shown by the arrow B in FIG. 11A, the operating body 5, the driving rod 2, and the locking bodies 3L and 3R rotate integrally.

The torsion coil springs 6 and 6, which are elastic urging 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. To.
The torsion coil springs 6 and 6 have the locking bodies 3L and 3R in a state where the drawer 20 is housed in the main body 11 of the cabinet 10 as shown in FIG. , 4R acts in the direction of locking (the direction opposite to the arrow C in FIG. 11A).
Since the locking bodies 3L, 3R, the driving rod 2, and the operating body 5 rotate together, the elastic urging means applies the elastic restoring force to the locking bodies 3L, 3R, the driving rod 2. , Or the operating body 5 may be urged to act in the above direction.

(Part to be attached to the side plate of the main body)
Next, with reference to FIGS. 9 (a) and 9 (b), and FIG. 11 (a), the configuration of the portions (lock bodies 4L, 4R) to be attached to the side plates 12 and 13 of the main body 11 in the latch device 1 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. 9B is attached to the inner surface of the right side plate 13. That is, the elastic locking claw 41B is locked and prevented from coming off by fitting the base end side portion of the main body 41 of the lock bodies 4L and 4R into the engaging holes (not shown) of the side plates 12 and 13.

The lock bodies 4L and 4R may be attached to the rail supporting the drawer 20 instead of the side plates 12 and 13.
The lock bodies 4L and 4R are made of synthetic resin, and have an inward extending portion 42 protruding inward in the left-right direction, a rear wall portion 43 located behind the inward extending portion 42, and an upper portion of the rear wall portion 43. It has a forward extending portion 44 extending forward from the.

<Operation of drawer latch device)
Next, with reference to FIGS. 1, 10 (a) and 10 (b), 11 (a) and 11 (b), and 12 (a) and 12 (b), the latch device 1 The operation of is described.
In the state where the drawer 20 shown in FIG. 1 is pushed so as to be housed in the main body 11 and the operation unit 52 is not operated, the locked state shown in FIGS. 10 (a), 11 (a) and 12 (a) is shown. It is L.
That is, as shown in FIG. 12A, the outward extending portion 33 of the locking body 3L (3R) is located behind the inward extending portion 42 of the locking body 4L (4R), and the locking body 4L The upper surface 33A of the outward extending portion 33 is abutted against the lower surface 44A of the front extending portion 44 of the rear wall 43 (4R).
Therefore, the uppermost position of the outward extending portion 33 elastically urged by the torsion coil spring 6 is regulated, and in such a regulated state, the front surface 33C of the outward extending portion 33 is the inward extending portion 42. The drawer 20 cannot move forward because it is held back by the rear surface 42C.

In such a locked state L, when the user performs an operation of grasping the step portion D of the front portion of the drawer 20 in FIG. 10A and pulling out the drawer 20 in order to pull out the drawer 20 of FIG. 1, the operation is performed. As a result, the user grips the upper part of the operation unit 52 together with the step portion D.
As a result, as shown by the arrow A in FIG. 11A, the upper portion of the operating portion 52 of the operating body 5 is pushed backward against the elastic urging force of the torsion coil spring 6, and as described above, together with the operating body 5, Since the drive rod 2 and the locking bodies 3L and 3R rotate together as shown by the arrow B, the unlocked state UL of FIGS. 10 (b), 11 (b) and 12 (b) is obtained. ..
In such an unlocked state UL, the outward extending portion 33 of the locking body 3L (3R) is lowered as shown by the arrow C in FIG. 11 (a), and as shown in FIG. 12 (b). Since the upper surface 33A of the outward extending portion 33 is located below the lower surface 42A of the inward extending portion 42 of the lock body 4L (4R), the drawer 20 can be pulled out 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 as the drawer 20 is pushed in without operating the operation unit 52. At 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 outward 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 inward extending portion 42 of the locking body 4L (4R) is downward. It is a sloping surface that recedes as it goes toward. Therefore, as the drawer 20 is pushed in, 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, and the locking body 3L (3R) is driven. Since the rod 2 and the operating body 5 rotate, the outward extending portion 33 can pass through the inward extending portion 42. Then, at the position where the drawer 20 is housed in the main body 11, the locked state L shown in FIGS. 10 (a), 11 (a) and 12 (a) is obtained by the elastic urging force of the torsion coil spring 6.

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

At the position where the locking body 3L (3R) shown in FIG. 12B is rotated to be in the unlocked state UL, the locking body 3L (3R) is locked more than the lower surface 33B of the outward extending portion 33 of the locking body 3L (3R). The bottom surface 41A of the main body 41 of the body 4L (4R) is located below.
Therefore, when there is another drawer 20 on which a shape-retaining storage item such as a file or a book is placed below the drawer 20, the alternate long and short dash line in the upper end of the storage item (for example, FIG. 12B). (See E) is never located above the bottom surface 41A of the lock body 4L (4R).
Therefore, since the stored object does not interfere with the rotation operation of the locking bodies 3L and 3R when the latch device 1 is brought into the unlocked state UL, 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 changes from the unlocked state UL to the locked state L, the rotating operation of the locking bodies 3L and 3R is performed. Since the stored items do not interfere with each other, 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 unit 52 of the operation body 5, and the left and right locking bodies 3L, 3R fixed to both ends of the drive rod 2 in the left-right direction. Rotates with the drive rod 2. When the locking bodies 3L and 3R rotate in this way, the locking bodies 3L and 3R are disengaged from the locking bodies 4L and 4R (the upper surface 33A of the outward extending portion 33 of the locking bodies 3L and 3R is the locking body). (Located below the lower surface 42A of the inward extending portion 42 of the 4L and 4R), the drawer 20 can be pulled out forward from the main body 11.
That is, the operating force acting on the operation unit 52 is directly transmitted from the drive rod 2 to the locking bodies 3L and 3R, and the locking bodies 3L and 3R rotate, thereby causing the unlocked state UL, resulting in malfunction. It is less likely to occur, the certainty of the operation of bringing the latch device 1 to the unlocked state UL can be improved, and the operation for bringing the latch device 1 to the unlocked state UL becomes lighter. Moreover, the number of parts of the latch device can be reduced.

Further, the operating portion 52 of the operating body 5 has a portion extending upward from the front end portion of the connecting 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 is in the unlocked state UL.
Therefore, as the user grabs the step portion D at the front of the drawer 20 and pulls out the drawer 20, the latch device 1 is unlocked by a natural operation of gripping the upper part of the operation portion 52 together with the step portion D. Since the operation becomes UL and the operation can be performed lightly 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 part of the operation unit 52 has a curved shape so as to gradually push forward as it goes upward as described above, when the user puts a finger on the operation unit 52, the finger naturally moves upward. Since the movement is to rub up, the operation of grasping the upper part of the operation unit 52 together with the step portion D to bring the latch device 1 into the unlocked state UL becomes more natural.

1 Latch device 2 Drive rod 3L, 3R Locking body 4L, 4R Locking body 5 Operating body 6 Torsion coil spring (elastic urging means)
7 Central support member 7A Guide hole 7B, 7C, 7D Elastic locking claw 8A Guide hole 8B, 8C Elastic locking claw 8D Protruding piece 8L, 8R End support member 9 Opening / closing operation part 10 Cabinet 11 Main body 11A Opening 12, 13 Side plate 14 Top plate 15 Bottom plate 16 Back plate 17, 18 Door body 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 Top surface 26 Front Plate 27 Partition plate 31 Connecting part 31A Cylindrical surface 31B Engagement hole 32 Rear extension part 33 Outer extension part 33A Upper surface 33B Lower surface 33C Front 41 Main body 41A Bottom 41B Elastic locking claw 42 Inner extension 42A Lower surface 42B Front 42C Rear surface 43 Rear wall part 44 Front extension part 44A Bottom surface 51 Connecting part 51A Cylindrical surface 51B Engaging recess 52 Operation part 53 Connecting part H Hinge L Locked state UL Unlocked state

Claims (5)

In a cabinet including a main body including left and right side plates and having an opening on the front surface, and a cabinet provided with a drawer that is slidably supported in the front-rear direction by the side plates and protrudes from the opening.
A latch device capable of switching between a locked state in which the drawer is locked so as to prevent the drawer from popping out and an unlocked state in which the locked state is released so that the drawer can be pulled out.
A drive rod that 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 fixed to the tip of the drive rod, located at both ends of the drawer in the left-right direction, and rotating together with the drive rod.
A lock body fixed to the side plate or a rail supporting the drawer and locked to the lock body in the locked state, and a lock body.
An operating body having an operation unit 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 rotating the drive rod around the axis by operating the operation unit.
An elastic urging means for urging the locking body, the driving rod, or the operating body in a direction in which the locking body locks the lock body with the drawer housed in the main body.
With
The operation of the operation unit, in a state in which rotating the locking member against the biasing force of said resilient biasing means, Ri Do the unlocked state the locking member is disengaged from said lock body,
The operating body has a connecting portion fixed to the operating rod, a connecting portion fixed to the driving rod, and a connecting portion extending in the front-rear direction connecting the operating portion and the connecting portion.
The drive rod rotates around the axis due to the displacement of the operation unit in the front-rear direction .
Drawer latching device in a cabinet. In a cabinet including a main body including left and right side plates and having an opening on the front surface, and a cabinet provided with a drawer that is slidably supported in the front-rear direction by the side plates and protrudes from the opening.
A latch device capable of switching between a locked state in which the drawer is locked so as to prevent the drawer from popping out and an unlocked state in which the locked state is released so that the drawer can be pulled out.
A drive rod that 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 fixed to the tip of the drive rod, located at both ends of the drawer in the left-right direction, and rotating together with the drive rod.
A lock body fixed to the side plate or a rail supporting the drawer and locked to the lock body in the locked state, and a lock body.
An operating body having an operation unit 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 rotating the drive rod around the axis by operating the operation unit.
An elastic urging means for urging the locking body, the driving rod, or the operating body in a direction in which the locking body locks the lock body with the drawer housed in the main body.
With
The operation of the operation unit, in a state in which rotating the locking member against the biasing force of said resilient biasing means, Ri Do the unlocked state the locking member is disengaged from said lock body,
The operating body has a connecting portion fixed to the operating rod, a connecting portion fixed to the driving rod, and a connecting portion extending in the front-rear direction connecting the operating portion and the connecting portion.
The operating portion has a portion extending upward from the front end portion of the connecting portion, and is brought into the unlocked state by an operation of gripping the upper portion of the portion extending upward and the step portion of the front portion of the drawer .
Drawer latching device in a cabinet. In a cabinet including a main body including left and right side plates and having an opening on the front surface, and a cabinet provided with a drawer that is slidably supported in the front-rear direction by the side plates and protrudes from the opening.
A latch device capable of switching between a locked state in which the drawer is locked so as to prevent the drawer from popping out and an unlocked state in which the locked state is released so that the drawer can be pulled out.
A drive rod that 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 fixed to the tip of the drive rod, located at both ends of the drawer in the left-right direction, and rotating together with the drive rod.
A lock body fixed to the side plate or a rail supporting the drawer and locked to the lock body in the locked state, and a lock body.
An operating body having an operation unit 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 rotating the drive rod around the axis by operating the operation unit.
An elastic urging means for urging the locking body, the driving rod, or the operating body in a direction in which the locking body locks the lock body with the drawer housed in the main body.
With
The operation of the operation unit, in a state in which rotating the locking member against the biasing force of said resilient biasing means, Ri Do the unlocked state the locking member is disengaged from said lock body,
The locking body includes a rear extending portion extending rearward and an outward extending portion extending outward in the left-right direction from the tip end portion of the rear extending portion.
The lock body includes an inward extending portion that projects inward in the left-right direction.
In the locked state, the outward extending portion is located behind the inward extending portion and is held by the inward extending portion.
When the locking body is rotated by operating the operating portion, the upper surface of the outward extending portion is located below the lower surface of the inward extending portion to be in the unlocked state.
Drawer latching device in a cabinet. The bottom surface of the lock body is located below the lower surface of the outward extending portion in the unlocked state.
The drawer latching device in the cabinet according to claim 3. The main body with an opening on the front and
A door body equipped with a pull tab, an electronic lock, and an authentication panel that opens and closes the opening of the main body.
A single or multiple drawers with a drawer latching device in the cabinet according to any one of claims 1 to 4 , located in the space below the body.
With one or more shelves located in the space above the main body,
Cabinet with.

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