JPH07197719A - Lock device of drawer in furniture - Google Patents

Abstract

PURPOSE:To safely lock the other drawers on the received position when one drawer is drawn out by utilizing a key bar operated with a locking device so as to lock or unlock. CONSTITUTION:Drawers 2 of vertically several steps are received in a cabinet main body 1 opened in front capably of being taken in and out. Stoppers 9 are projectingly provided on the outsides of respective drawers, and a key bar 8 is vertically provided inside the cabinet main body rotationally movably. The key bar is projectingly provided with a plurality of hooks 10 corresponding to the respective stoppers. By rotationally moving the key bar with a locking device 11 provided on the cabinet main body, respective hooks are engaged or disengaged with corresponding stoppers. A rail body supporting a drawer is composed of a fixed rail 3 and a movable rail 4, and the movable rail is moved front and rear accompanying taking in and out of the drawer. Each movable rail is provided with a window part 4a, and a plurality of arms 14 is projectingly provided on the key bar corresponding to the respective window parts. When one drawer is taken out, the arm is pushed out from the window part so as to rotationally move the key bar, and the hooks are engaged with the stoppers of the other drawers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawer locking device for furniture, and more particularly to a locking device capable of locking another drawer in a storage position when one drawer is pulled out.

[0002]

2. Description of the Related Art Conventionally, furniture such as a file cabinet has been used in which rail bodies are provided on the left and right inner side surfaces of a cabinet body having an opening on the front side with a vertical interval, and a drawer is freely inserted into and pulled out from each rail body. There is. In this type of furniture, a stopper is generally provided on the outer surface of each drawer, while a key bar is rotatably provided vertically inside the cabinet body. A plurality of hooks are provided so as to project, and each hook is configured to be disengaged from a corresponding stopper by rotating a key bar with a locking device provided in the cabinet body. Therefore, when the locking device is operated with the key to rotate the key rod in the lock direction, all the hooks engage with the corresponding stoppers, so that all the drawers can be locked at the storage position. Further, when the locking device is operated by the key to rotate the key bar in the unlocking direction, all the hooks are disengaged from the corresponding stoppers, so that all the drawers can be pulled out.

[0003]

However, in the above-mentioned conventional furniture, when one drawer is pulled out, the other drawers are in the unlocked state. There was a risk that the weight would be lost and the furniture would fall.

Therefore, an object of the present invention is to provide a simple structure utilizing a key rod that is locked and unlocked by a locking device, and when one drawer is pulled out, another drawer is safely locked in a storage position. An object of the present invention is to provide a drawer lock device for furniture.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is to provide rail bodies on the left and right inner side surfaces of a cabinet body having an opening on the front side with a vertical space provided therebetween, and each rail body is provided. The drawer is supported freely in and out of the drawer, stoppers are provided on the outer surface of each drawer, and a key bar is rotatably installed vertically inside the cabinet body. In a drawer lock device of furniture in which hooks are projected and the key bar is rotated by a locking device provided in the cabinet body, the hooks are engaged with and disengaged from the corresponding stoppers. The cam means is provided on the member that moves back and forth with the removal of the
A plurality of arms are projected on the key rod corresponding to each cam means, and when one drawer is pulled forward from the storage position, the arm is rotated together with the key stick by the cam means and the stopper of the other drawer is pulled out. It is characterized in that the hook is engaged with.

According to a second aspect of the present invention, in the locking device according to the first aspect, each rail body has a fixed rail fixed to the left and right inner side surfaces of the cabinet body, and a movable rail supported by the fixed rail. A roller for supporting the drawer is rotatably supported by the movable rail, and the roller is configured to move the movable rail forward by rolling on the fixed rail when the drawer is pulled out forward. The means comprises an outer surface of the movable rail and a window portion opening to the outer surface, and the arm of the key rod is configured to engage with the window portion of the movable rail when the drawer is in the storage position. Characterize.

According to a third aspect of the present invention, in the lock device according to the first aspect, the cam means includes an outer surface of the drawer and a window portion opened to the outer surface, and the arm of the key rod is housed in the drawer. It is characterized in that it is adapted to engage the window of the drawer when in the position.

Further, the invention according to claim 4 is the invention according to claim 2.
Alternatively, the lock device according to the third aspect is characterized in that the arm includes a support piece fixed to the key bar and a roller pivotally supported by the support piece corresponding to the window portion.

[0009]

In the lock device according to the first aspect, when the lock device is operated by the key to rotate the key rod in the lock direction,
Since all hooks engage the corresponding stoppers, all drawers can be locked in the storage position.
Further, when the locking device is operated by the key to rotate the key bar in the unlocking direction, all the hooks are disengaged from the corresponding stoppers, so that all the drawers can be pulled out. Further, when one drawer is pulled forward from the storage position, the arm can be rotated together with the key bar by the cam means to engage the hook with the stopper of another drawer, so that one drawer was pulled out. Sometimes other drawers can be safely locked in the storage position (safety lock).

In the lock device according to the second aspect, when the drawer is pulled out forward, the tip of the movable rail moves to the front of the cabinet body to support the drawer, so that each drawer can be pulled out largely. Becomes Also,
Since the cam means is composed of the outer surface of the movable rail and the window portion opened to this outer surface, it is not necessary to form a window portion for engaging the arm on the outer surface of the drawer. Therefore, it is possible to prevent the stored items such as files inside the drawer from being scratched by the arm, and the coating surface on the outer surface of the drawer from being scratched by the arm.

In the lock device according to the third aspect of the present invention, since the cam means comprises the outside surface of the drawer and the window portion opened to this outside surface, the rail body for supporting the drawer has a simple structure of only the fixed rail. be able to.

According to another aspect of the lock device of the present invention, the arm is composed of a supporting piece fixed to the key bar and a roller pivotally supported by the supporting piece corresponding to the window portion, so that one drawer is pulled out. When rotating, the roller can be easily pushed out of the window while rotating the roller at the edge of the window.
Therefore, the safety lock operation of the drawer can be smoothly performed.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show a first embodiment in which the present invention is applied to a file cabinet. First, referring to FIG. 1, three upper and lower drawers 2 are housed in a cabinet body 1 having an open front so that the drawers 2 can be freely taken out and put in. As shown in FIG. 2, the rail body that supports each drawer 2 is a fixed rail 3 having a substantially U-shaped cross section fixed to the left and right inner side surfaces of the cabinet body 1 (only one inner side surface is shown).
And a movable rail 4 having a substantially U-shaped cross section which is inserted into and supported by the fixed rail 3. A roller 5 that abuts the lower surface of the upper surface 3a of the fixed rail 3 is pivotally supported at the rear end of the movable rail 4, and the bottom surface of the fixed rail 3 is near the front end and the rear end of the movable rail 4, respectively. 3b
A roller 6 that is in contact with the upper surface of is supported. On the other hand, a vane 7 extending in the front-rear direction is projectingly provided on the outer surface of each drawer 2, and the drawer 2 is supported on the upper surface of the roller 6 by bringing the lower surface of the vane 7 into contact with the upper surface of the roller 6. It is supposed to be done.

According to the above-mentioned rail structure, since the vanes 7 rotate the rollers 6 when the drawer 2 is pulled out to the front of the cabinet body 1, the rollers 6 roll on the bottom surface 3b of the fixed rail 3, As a result, the movable rail 4 moves to the front of the cabinet body 1. Therefore, when the drawer 2 is pulled out in front of the cabinet body 1, the movable rail 4
Since the tip end of the drawer moves to the front of the cabinet body 1 to support the drawers 2, each drawer 2 can be largely pulled out forward.

As shown in FIGS. 2 and 3, a key rod 8 is rotatably provided vertically inside one side of the cabinet body 1 and corresponds to a stopper 9 protruding from the outer surface of each drawer 2. A hook 10 formed of, for example, a U-shaped curved rod is fixed to the key rod 8.

As shown in FIGS. 2 and 5, the cabinet body 1 is provided with a locking device 11. The locking device 11 is supported by an upper front surface portion of the top plate 1a of the cabinet body 1 and a front reinforcing plate 1b fixed inside the top plate 1a, and is movable back and forth. 2 and 5 show an unlocked state in which the locking device 11 projects to the front of the cabinet body 1. When the locking device 11 is pushed backward and a key (not shown) inserted in the key insertion portion 11a of the locking device 11 is turned, the locking device 11 is locked at the pushed locking position. . A lever 12 extending rearward is attached to the locking device 11, a long hole 12a extending in the front-rear direction is formed in the lever 12, and the key bar 8 has its upper end bent at a right angle to form an arm portion. 8a is formed, and the arm portion 8a forms the lever 1
The two long holes 12a penetrate. A tension spring 13 is attached between the tip of the arm portion 8a and the front reinforcing plate 1b.

When the locking device 11 is in the unlocked position, FIG.
Further, as shown in FIG. 3, each hook 10 fixed to the key rod 8 is separated from the stopper 9 of each drawer 2. When the locking device 11 is pushed backward, the key rod 8 rotates in the clockwise direction (the direction of arrow R) in FIG. 2 against the spring force of the tension spring 13, whereby each hook 10 stops the stopper of each drawer 2. Since it engages with 9, all the drawers 2 are locked (locked) in the storage position.

As shown in FIG. 2, side walls of the fixed rail 3 and the movable rail 4 are provided with windows 3c and 4a which are aligned with each other when the drawer 2 is in the storage position, and the key rod 8 is provided with the windows. An arm 14 that engages with the window 4a of the movable rail 4 from the outside of the side wall of the fixed rail 3 is provided. In this embodiment, the arm 14 includes a support piece 15 fixed to the key rod 8.
And a roller 16 axially supported by the support piece 15 corresponding to the window 4a of the movable rail 4.

In the drawer lock device of the file cabinet having the above-mentioned structure, since the movable rail 4 moves forward when one drawer 2 is pulled out from the storage position to the front, the roller 16 of the arm 14 moves to the movable rail 4. Since it abuts on the edge of the window 4a and rides on the outer surface of the movable rail 4 while rotating, the key rod 8 rotates in the locking direction, and as shown in FIG. 4, the stopper 9 of the other drawer 2 hooks 10.
Engage. Therefore, when one drawer 2 is pulled out, the other drawer 2 can be safely locked in the storage position (safety lock).

Further, since the cam means is composed of the outer side surface of the movable rail 4 and the window portion 4a opened to the outer side surface, the drawer 2 is provided.
It is not necessary to form a window portion for engaging the arm 14 on the outer side surface of the. Therefore, it is possible to prevent the stored items such as files inside the drawer 2 from being scratched by the arm and the coating surface on the outer surface of the drawer 2 from being scratched by the arm 14.

Further, in the above embodiment, since the arm portion 8a at the upper end of the key rod 8 is engaged with the elongated hole 12a of the lever 12 of the locking device 11, the safety lock when one drawer 2 is pulled out. During operation, the arm portion 8a moves to the lever 12
The locking device 11 is kept in the protruding (unlocking) position by moving backward in the long hole 12a. At this time, the locking device 1
1 is released from the spring force of the tension spring 13 and can move back and forth. There is no problem in terms of function, but the locking device 1
Another spring (not shown) to prevent rattling of 1
The locking device 11 may be biased in the protruding (unlocking) direction with.
Also, instead of the long hole 12a, the lever 12 has an arm portion 8a.
You may provide a round hole etc. which conform to.

FIGS. 6 (a) and 6 (b) show a second embodiment of the present invention. In the figure, the same components as those in the first embodiment are designated by the same reference numerals. In this embodiment, the arm 14 protruding from the key rod 8 is composed of a U-shaped bending rod bent in a V shape, and the other structure is the same as that of the first embodiment. In this embodiment, since the number of parts of the arm 14 is reduced, it can be provided at a low cost.

FIG. 7 shows a third embodiment of the present invention. In the figure, the same components as those in the first embodiment are designated by the same reference numerals. In this embodiment, the cam means is composed of the outer side surface of the drawer 2 and the window portion 2a opened to this outer side surface. In addition, the arm 14 protruding from the key rod 8
Is composed of a U-shaped bending rod bent in a V shape similarly to the second embodiment, but in the second embodiment, the hook 10 is in front of the key rod 8 and the arm 14 is in the key rod 8. In contrast to the protrusions to the rear, the hook 1 is used in the third embodiment.
The reference numeral 0 projects to the rear of the key rod 8 and the arm 14 projects to the front of the key rod 8.

Therefore, in this third embodiment,
The rail body that supports the drawer 2 is a fixed rail 3 with rollers.
Only a simple configuration can be made. However, drawer 2
Since the cantilever support state is obtained by pulling out forward, the configuration of the third embodiment can be suitably used for a drawer having a relatively shallow bottom and a small storage weight. In addition, in the third embodiment, when the drawer 2 is pulled out from the storage position to the front, the arm 14 is more easily attached to the window 2a than in the second embodiment.
The safety lock operation can be performed smoothly because it can be escaped from.

FIG. 8 shows a fourth embodiment of the present invention relating to the connecting structure of the locking device 11 and the key rod 8. In this embodiment, the locking device 11 has a lever 17 which is rotated by operating a key (not shown), and the rotation of this lever 17 causes the arm portion 8a at the upper end of the key rod 8 to resist the spring force of the spring 13. And can be rotated.
The key rod 8 of the third embodiment has a rotation direction for locking and unlocking that is opposite to that of the first and second embodiments, so that
It is preferable to combine the configuration of the embodiment with the configuration of the third embodiment.

Although the embodiments shown in the drawings have been described above, the present invention is not limited to the embodiments described above,
For example, the hook 10 in the first and second embodiments.
The protruding direction of the arm 14 may be reversed as in the third embodiment. Further, the cam means provided on the drawer 2 may be a cam plate which is provided on the outer surface of the drawer 2 so as to project and whose front end is an inclined surface.

[0028]

As is apparent from the above description, according to the present invention, each drawer or a member that moves back and forth as the drawer moves in and out is provided with cam means, and a locking device is provided corresponding to each cam means. Plural arms are projected on the connected key bar, and 1
When one drawer is pulled forward from the storage position, the arm is rotated together with the key bar by the cam means to engage the hook with the stopper of another drawer, so that the locking and unlocking operations are performed by the locking device. With a simple configuration using a key bar, when one drawer is pulled out, the other drawer can be safely locked in the storage position.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a file cabinet showing a first embodiment of the present invention.

2 is an exploded perspective view of essential parts of the file cabinet shown in FIG. 1. FIG.

FIG. 3 is a horizontal cross-sectional plan view of an essential part with a part of the file cabinet shown in FIG. 1 cut away.

FIG. 4 is a view similar to FIG. 3 showing an operating state of the lock device of the file cabinet shown in FIG. 1.

5 is a vertical cross-sectional side view of essential parts showing the connecting structure of the locking device and the key bar of the file cabinet shown in FIG. 1. FIG.

FIG. 6A is a horizontal cross-sectional plan view of a main part of a file cabinet showing a second embodiment of the present invention, and FIG. 6B is a vertical cross-sectional side view of the main part of the file cabinet.

FIG. 7 is a horizontal cross-sectional plan view of a main part of a file cabinet showing a third embodiment of the present invention.

FIG. 8 is a perspective view of a connecting structure of a locking device and a key bar of a file cabinet showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Cabinet body 2 Drawer 2a Window part 3 Fixed rail 4 Movable rail 4a Window part 6 Roller 7 Wing plate 8 Key bar 8a Arm part 9 Stopper 10 Hook 11 Locking device 12 Lever 12a Long hole 13 Tension spring 14 Arm 15 Support piece 16 Roller 17 lever

Claims (4)

[Claims] 1. A rail body is provided on the left and right inner side surfaces of a cabinet main body having an open front surface with a vertical interval, and a drawer is freely inserted into and removed from each rail body, and a stopper is provided on an outer side surface of each drawer. , A key rod is rotatably installed vertically inside the cabinet body, and a plurality of hooks are projected on the key rod corresponding to each stopper, and the key rod is rotated by a locking device provided in the cabinet body. As a result, in a drawer lock device in furniture in which each hook is engaged with and disengaged from a corresponding stopper, a cam means is provided on each drawer or a member that moves back and forth as the drawer is taken in and out. Corresponding to the above, a plurality of arms are projected on the key rod, and when one drawer is pulled forward from the storage position, the arm is rotated together with the key rod by the cam means to engage the hooks with the stoppers of other drawers. Combine Locking device of the drawer in the furniture, characterized in that was Unishi. 2. Each rail body has a fixed rail fixed to the left and right inner side surfaces of the cabinet body, and a movable rail supported by the fixed rail, and a roller supporting a drawer is pivotally supported on the movable rail. This roller is configured to move the movable rail forward by rolling on the fixed rail when the drawer is pulled out forward, and the cam means includes an outer surface of the movable rail and a window portion opened to the outer surface. The lock device for a drawer in furniture according to claim 1, characterized in that the arm of the key bar is configured to engage with the window of the movable rail when the drawer is in the storage position. 3. The cam means comprises an outer surface of the drawer and a window opening to the outer surface, and the arm of the key bar is configured to engage with the window of the drawer when the drawer is in the storage position. The lock device for the drawer in the furniture according to claim 1, wherein 4. A drawer for furniture according to claim 2, wherein the arm comprises a support piece fixed to the key bar and a roller pivotally supported by the support piece corresponding to the window portion. Locking device.