JP2540345Y2 - Drawer locking and safety locking device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawer locking and safety locking device for furniture such as cabinets, desks and the like. More specifically, the present invention relates to a drawer in which a plurality of drawers are stored in a removable manner. The present invention relates to a lock and safety locking device for a drawer provided with a locking mechanism for locking the drawer at the storage position and a safety locking mechanism for locking the remaining drawers at the storage position when one of the drawers is pulled out.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Publication No. 56-2054
As disclosed in Japanese Unexamined Patent Application Publication No. 7-56, Japanese Utility Model Application Laid-Open No. 56-2047, etc., furniture provided with a safety locking device for locking the remaining drawers in the storage position when one drawer is pulled out is known. Used. This type of safety locking device is provided with a vertically movable operating plate inside a furniture main body that accommodates a plurality of drawers so that the drawer can be taken in and out, and a catch member that holds the operating plate at the upper end position of the vertical moving section, Engagement pins are protruded from the side of each drawer, and a plurality of pin guides are provided on the operation plate corresponding to the respective engagement pins, and each of the pin guides has an engagement pin. The inclined groove extends from the upper rear end to the lower front end of the pin guide so that the corresponding engaging pin can pass through the inclined groove when the operating plate is at the lower end position. When the drawer is pulled out, the engaging pin passes through the inclined groove of the pin guide from the rear to the front to push up the operating plate to the upper end position and hold it on the catch member. ing.

Therefore, according to the safety locking device having the above structure, when any one of the drawers is pulled out from the furniture body, the operating plate is held at the upper end position by the catch member.
When trying to pull out another drawer, the engaging pin comes into contact with the lower surface of the rear end of the pin guide. That is, the other drawers are safely locked in the storage position. On the other hand, when the drawn drawer is stored in the furniture body, the engaging pin passes through the inclined groove of the pin guide of the operation plate from the front to the rear, and at this time, the pin guide is pushed down and detached from the catch member, and Return to position.

[0004]

However, in the drawer safety locking device having the above structure, when the furniture is turned upside down when the furniture is transported or the like, the operating plate moves to its upper end position by its own weight. As a result, the drawer is held by the catch member, which causes a problem that all drawers cannot be pulled out.

Accordingly, an object of the present invention is to lock and secure a drawer without inadvertently popping out or malfunctioning of a safety locking mechanism even when furniture is turned upside down when carrying furniture or the like. It is to provide a locking device.

[0006]

Means for Solving the Problems To solve the above-mentioned problems, the invention according to claim 1 has a drawer in which a plurality of drawers are stored so as to be able to be taken in and out. A locking mechanism for locking, and a safety locking mechanism for locking the remaining drawers in the storage position when any one of the drawers is withdrawn, and an operation plate capable of moving the safety locking mechanism up and down; A catch member that is held at an upper end position of the vertical movement section, and a plurality of engagement pins protrudingly provided on a side of each drawer, and a plurality of engagement plates can be brought into contact with the operation plate corresponding to each engagement pin. In the locking and safety locking device of a drawer provided with a plurality of pin guides and an inclined groove for passing the engaging pin in each pin guide, the inclined groove is inclined when the corresponding operating pin is at the upper end position. Lower the rear end of the pin guide so that it can pass through the groove As the engaging pin passes through the inclined groove of the pin guide from the rear to the front when pulling out one drawer, the operating plate is pushed down and detached from the catch member when extending one drawer. It is characterized by becoming.

According to a second aspect of the present invention, in the locking and safety locking device for a drawer according to the first aspect, the position of the catch member for holding the operating plate at the upper end position and the position for holding the operating plate at the lower end position is determined. The locking mechanism is a key insertion part, a key stick that is rotated in conjunction with the forward / reverse operation of the key insertion part by key operation, and a tip fixed to the key stick and having a tip. A catch member operating lever that engages with the catch member and moves the catch member up and down by rotation of the key rod.

According to a third aspect of the present invention, there is provided a lock and safety locking device for a drawer according to the second aspect, wherein a locking mechanism is further vertically installed inside the furniture main body so as to face the operating plate and to be vertically movable. A key actuating lever fixed to the key rod, the tip of which engages with the key plate and moves the key plate up and down in accordance with the rotation of the key rod. A locking pin is projected from the side, and a plurality of stoppers are provided on the key plate corresponding to each locking pin so as to be able to contact the contact pin. When it is at the upper end position of the vertical movement section, it is at a position that can pass under the corresponding stopper, and
When the key plate is at the lower end position, it is at a position where it comes into contact with the rear end of the stopper.

According to a fourth aspect of the present invention, in the locking and safety locking device for a drawer according to the first aspect, the locking mechanism is interlocked with a forward / reverse operation of the key insertion portion and the key insertion portion by the key operation. A pivotable key stick, a key plate vertically installed inside the furniture main body facing the operation plate, and vertically fixed to the key stick, the tip of which is engaged with the key plate to engage the key plate. A key actuating lever for moving the key plate up and down in accordance with the rotation, a locking pin protruding from a side of each drawer opposite to the engaging pin, and a key corresponding to each locking pin. The plate is provided with a plurality of stoppers that can contact the contact pins, and the lock pin of each drawer is located at a position where the key plate can pass under the corresponding stopper when the key plate is at the upper end position of the vertical movement section, The key plate is located at a position where it comes into contact with the rear end of the stopper when the key plate is at the lower end position.

According to a fifth aspect of the present invention, in the locking and safety locking device for a drawer according to the first aspect, the operating plate has an engagement piece at an upper end, and the catch member is snap-fitted to the engagement piece. It has a catch piece that fits and a catch mounting plate that holds the catch piece, and a slide guide that slidably engages the operating plate is provided at the lower end of the catch mounting plate. And

[0011]

In the drawer locking and safety locking device according to the first aspect, even if the furniture is turned upside down during transportation of the furniture, the operating plate does not malfunction due to its own weight. Further, when the furniture is turned upside down, all drawers can be locked in the storage position by the locking mechanism in advance, so that the drawers can be prevented from accidentally jumping out.

According to a second aspect of the present invention, the operating plate and the catch member of the safety locking device also function as a part of the locking mechanism, and perform the safety locking operation and the locking operation. Therefore, simplification of the structure can be achieved. When the drawer is locked, the operating plate is held by the catch member at the lower end position of the vertical movement,
Even if the furniture is turned upside down, the working plate does not move by its own weight.

According to a third aspect of the present invention, in the lock and safety locking device for a drawer, the locking mechanism further includes a key plate vertically installed inside the furniture body so as to face the operating plate and to be vertically movable inside the furniture body. A key actuating lever that is fixed and whose tip engages with the key plate and moves the key plate up and down in accordance with the rotation of the key rod, and a locking pin is provided on the side of each drawer opposite to the engaging pin. While being protruded,
A plurality of stoppers which can be brought into contact with the locking pins are provided on the key plate corresponding to the respective locking pins, and the locking pins of each drawer are provided with the corresponding stoppers when the key plate is at the upper end position of the vertical movement section. It is located at a position where it can pass below, and is in a position where it comes into contact with the rear end of the stopper when the key plate is at the lower end position, so that the operating plate on one side of the drawer and the key plate on the other side are used. All drawers can be securely locked in the storage position on both sides.

According to a fourth aspect of the present invention, there is provided a drawer locking and safety locking device, wherein the locking mechanism comprises a key insertion portion, and a key rod which is rotated in conjunction with the forward / reverse operation of the key insertion portion by a key operation. A key plate vertically mounted inside the body of the furniture so as to be movable up and down opposite to the operation plate; and a key plate fixed to the key stick, the tip of which is engaged with the key plate and the key plate is turned in accordance with the rotation of the key stick. And a lock actuating lever for moving the lock plate up and down.A lock pin protrudes from a side of each drawer opposite to the engagement pin, and the lock plate corresponds to the lock pin so as to correspond to each lock pin. A plurality of stoppers that can be contacted are provided, and the lock pin of each drawer is located at a position where the key plate can pass under the corresponding stopper when the key plate is at the upper end position of the vertical movement section, and the key plate is at the lower end position. The key plate and the operating plate of the locking mechanism are independent of each other for the locking operation and the safety It performs the operation. Therefore, the catch member can be fixed to the furniture main body, and there is no need to connect with the locking mechanism, so that the structure is simplified.
In the locking and safety locking device of the drawer according to the fifth aspect, the catch member and the operating plate can be smoothly moved up and down, respectively.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 8 show an embodiment in which the present invention is applied to a file cabinet. First, referring to FIGS. 1 to 3, the cabinet includes a cabinet main body 10 that houses upper and lower three-stage drawers 11 so that they can be taken in and out.

As shown in FIG. 2, on one side (left side in the figure) of the drawer 11, an operation plate 13 of a safety locking mechanism 10 is vertically provided inside the cabinet body 10 so as to be vertically movable. As shown in FIG. 3, an elastic plastic engagement piece 14 is provided at an upper end of the operation plate 13, and the engagement piece 14 is engaged above the operation plate 13 in the cabinet body 10. A possible catch member 15 is provided.

An engagement pin 16 is provided on the left side surface of each drawer 11 so as to project therefrom. Three pin guides 17 capable of contacting the engagement pins are provided on the operation plate 13 corresponding to the engagement pins 16. Is provided. Each of the pin guides 17 is formed with an inclined groove 17a that allows the engaging pin 16 to pass therethrough, and is formed on the drawer 11 side. Each inclined groove 17a has a corresponding engaging groove when the operating plate 13 is at the upper and lower ends. The pin 16 extends from the lower rear end to the upper front end of the pin guide 17 so that the pin 16 can pass through the inclined groove 17a. Therefore, when the operating plate 13 is at the upper end position, the engaging pin 16 can pass through the inclined groove 17 of the pin guide 17 or any one of the drawers 11 can be pulled out from the cabinet body 10. When one of the drawers 11 is pulled out, when the engaging pin 16 passes through the inclined groove 17a of the pin guide 17 from the rear to the front, it acts on the pin guide 17 to push down the operation plate 13. When the operating plate 13 is pushed up to the lower end position, the rear end of the other pin guide 17 comes to a position where it comes into contact with the engaging pin 16 of the corresponding drawer 11, so that the remaining drawers 11
Will be safely locked in the storage position.

The above-mentioned catch member 15 serves to hold the operation plate 13 at the upper end position by engaging with the engaging piece 14 of the operation plate 13 when the operation plate 13 is at the upper end position. The catch member 15 is the cabinet body 1
In this embodiment, the catch member 15 also performs a locking operation for locking all the drawers 11 in the storage position in cooperation with the operation plate 13 and a locking mechanism 21 described later. It has become something.

That is, the catch member 15 is vertically movable between a position for holding the operation plate 13 at the upper end position and a position for holding the operation plate 13 at the lower end position.
When 5 is at the lower end position, the operation plate 13 is held at the lower end position, so that all drawers 11 cannot be pulled out.

Referring to FIGS. 2 to 5, the locking mechanism 2
1 is a key insertion unit 22 and a key insertion unit 22 by key operation.
Key rod 23 which is rotated in conjunction with the forward / reverse operation of
3 is fixed to one end (left end) and the tip is a catch member 15.
And a catch member operating lever 24 that moves the catch member 15 up and down by the rotation of the key rod 23.

As shown in FIGS. 2 and 3, the catch member 15 has a catch piece 18 having an engagement hole for snap-fitting the engagement piece 14 of the operation plate 13, and the catch piece 18 holds the catch piece 18. And a catch mounting plate 19 that
The upper end of the catch mounting plate 19 is provided with an engaging hole 1 in which a pin 25 fixed to the tip of a catch member operating lever 24 is engaged.
9a are formed. In this embodiment, the operating plate 13 has a substantially U-shaped cross section, and the catch mounting plate 1
At the lower end of 9, a plastic slide guide 20 slidably engaged with the concave inner surface of the operation plate 13 is attached. The slide guide 20 plays a role of preventing the generation of noise by smoothly moving the operating plate 13 or the catch mounting plate 19 relative to each other when the operating plate 13 or the catch mounting plate 19 is moved up and down.

As shown in FIG. 2, FIG. 3 and FIG. 6, in this embodiment, a lock plate 21 is provided vertically on the right inside of the cabinet body 10 so as to be vertically movable in opposition to the operation plate 13. And a key actuating lever 27 fixed to the other end (right end) of the key stick 23, the tip of which engages the key plate 26 and moves the key plate 26 up and down in accordance with the rotation of the key stick 23. doing. Locking pins 28 project from the right side of each drawer 11, and three stoppers 29 that can abut the locking pins 28 are provided on the key plate 26 corresponding to the locking pins 28. Is provided. The locking pin 28 of each drawer 11 is at a position where the key plate 26 can pass under the corresponding stopper 29 when the key plate 26 is at the upper end position of the vertical movement section, and when the key plate 26 is at the lower end position. It is located in contact with the rear end.

Here, the operating plate 13 and the key plate 26 are connected to the drawer 1
The key insertion portion 22 is arranged on one side and the other side of the cabinet body 1 in a substantially symmetrical manner with good balance.
0 is located substantially at the center of the upper front part. The key stick 23 is formed of a square bar and extends substantially horizontally from near the upper end of the key plate 26 to near the upper end of the catch member 17.
At substantially the center thereof, it is connected to the key insertion portion 22 via a key actuating tool 30 as a rotary connection member and a crank pin 31.

As shown in FIG. 4, the key actuating device 30 is a key attachment case 32 fixed to the folded portion 10b of the upper wall plate 10a of the cabinet body 10 with a hook 33a and a screw 34.
Is held rotatably. As shown in FIGS. 2, 5 and 6, the catch member operating lever 24 and the key operating lever 27 are connected to the upper wall plate 10 of the cabinet body 10.
The guides 35 and 36 fitted to the folded portion 10b of FIG.

Next, the operation of the drawer locking and safety locking device and the locking mechanism in the cabinet having the above configuration will be described with reference to FIGS.

FIGS. 7A and 8A show a state where the locking mechanism 21 is unlocked. As can be seen from FIG. 7 (a), the operation plate 13 is moved upward and downward at the upper end position of the catch member
5, the engaging pin 16 of each drawer 11 is located at the lower rear end of the corresponding pin guide 17 and is positioned at the rear end opening of the inclined groove 17a. Also, as can be seen from FIG. 8 (a), the key plate 26 is also held at the upper end position of the vertical movement.
The locking pin 28 of each drawer 11 is located below the corresponding stopper 29. Therefore, in this state,
Any one of the drawers 11 can be pulled out of the cabinet body 10.

FIGS. 7 (b) and 8 (b) show a state in which the locking mechanism 21 is locked. As can be seen from FIG. 7B, the operating plate 13 is held by the catch member 15 at the lower end position of the vertical movement, and the engaging pin 16 of each drawer 11 is located above the rear end of the corresponding pin guide 17. ing. FIG.
As can be seen from (b), the key plate 26 is also held at the lower end position of the vertical movement, and the locking pin 28 of each drawer 11 is in contact with the rear end surface of the corresponding stopper 29. Therefore, in this state, any of the drawers 11 is connected to the cabinet body 1.
Cannot be pulled from zero.

FIG. 7C shows a state in which the uppermost drawer 11 is pulled out. Drawer 1 at the top from the state of Fig. 7 (a)
When 1 is pulled out, when the engaging pin 16 of the drawer 11 passes through the inclined groove 17a of the pin guide 17, the pin guide 17 is pushed down. Therefore, the engagement piece 14 at the upper end of the operation plate 13 is disengaged from the catch piece 18 (see FIG. 2) of the catch member 15 by the lowering force, and the operation plate 13 falls to the lower end position of the vertical movement. As a result, the engaging pins 16 of the remaining two drawers 11 are located above the rear end of the corresponding pin guide 17, that is, above the rear end opening of the inclined groove 17a. In, the remaining drawer 11 cannot be pulled out. That is, the remaining drawers 11 are safety-locked.

In the safety locking device having the above structure, all the drawers are connected to the cabinet body 1 when the cabinet is transported.
When the cabinet is turned upside down in a state where the lock is stored in the lock mechanism 21 and the locking mechanism 21 is unlocked (see FIG. 7A), the operation plate 13 is originally at the upper end position, and the operation plate 13 moves by its own weight. I will not do it. Therefore, the problem that the drawer 11 cannot be pulled out due to the malfunction of the operation plate 13 due to the inversion of the cabinet can be solved.

If the drawer 11 is previously locked at the storage position by the locking mechanism 21 (see FIGS. 7 (b) and 8 (b)), the drawer 11 is inadvertently removed from the furniture body when the cabinet is turned upside down. Jumping out can be prevented. Further, at the time of locking, the operation plate 13 is held by the catch member 15 at the lower end position of the vertical movement, so that even if the cabinet body 10 is turned upside down, the operation plate 13 does not move by its own weight.

Although the illustrated embodiment has been described above, the present invention is not limited to the above embodiment.
Various changes can be made to the components within the scope of the invention described in the utility model registration claim.

[0033] For example, it may be provided the key plate 26 to the same side as the operating plate 13 in the above embodiment, or Kagiban 26
And the stopper 29 may be omitted. The key plate 26
Is omitted, the locking mechanism 21 performs locking via the catch member 15 and the operation plate 13. Further, the catch member 15 is fixed in the cabinet body 10,
Therefore, the catch member operating lever 24 may be omitted, and the safety locking by the operating plate 13 and the locking by the key plate 26 may be performed independently. Furthermore, the present invention can be applied to various kinds of furniture having a drawer other than cabinets, for example, desks.
Noh.

[0034]

[Effects of the present invention] As is clear from the above description, the present invention
According to according to the furniture upside down when transporting furniture
Also, the operating plate does not malfunction due to its own weight.
When turning upside down, use a locking mechanism to
Can be locked in the storage position,
Inadvertent jumping out can be prevented. Therefore, safe
To provide a flexible drawer locking and safety locking device
Can be.

[0034]

[Brief description of the drawings]

FIG. 1 is a perspective view of a cabinet showing one embodiment of the present invention.

FIG. 2 is a front view of a main part of a locking and safety locking device for the drawer in the cabinet shown in FIG.

3 (a) is an exploded perspective view of a main part of the safety locking mechanism shown in FIG. 2, and FIG. 3 (b) is an exploded perspective view of a main part of a locking mechanism.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 2;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 2;

7 (a), (b) and (c) are explanatory views showing the operation of the safety locking mechanism shown in FIG. 2;

FIGS. 8A and 8B are explanatory diagrams showing the operation of the locking mechanism shown in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cabinet main body 11 Drawer 12 Safety locking mechanism 13 Operation plate 14 Engagement piece 15 Catch member 16 Engagement pin 17 Pin guide 18 Catch piece 19 Catch mounting plate 21 Locking mechanism 22 Key insertion part 23 Key stick 25 Catch member operation lever 26 key board 27 key board operating lever 28 locking pin 29 stopper

Claims (5)

(57) [Scope of request for utility model registration] 1. A lock mechanism for locking all drawers in a storage position by a key operation inside a furniture body for storing a plurality of drawers in a removable manner, and storing the remaining drawers when one of the drawers is pulled out. A safety locking mechanism for locking the position of the drawer, and an operating plate capable of vertically moving the safety locking mechanism, and a catch member for holding the operating plate at an upper end position of the vertical movement section. A plurality of pin guides are provided on the operation plate corresponding to each of the engagement pins, and a plurality of pin guides that can be brought into contact with the engagement pins are provided. In the locking and safety locking device of the provided drawer, the inclined groove is inclined from the lower rear end to the upper front end of the pin guide so that the corresponding engaging pin can pass through the inclined groove when the operating plate is at the upper end position. Locking the drawer characterized by extending And safety locking device. 2. A locking mechanism which can be moved up and down between a position where the catch member holds the operation plate at the upper end position and a position where the catch member holds the operation plate at the lower end position, and the locking mechanism includes a key insertion portion and a key operated by a key operation. A key rod that is rotated in conjunction with the forward / reverse operation of the insertion portion, and a catch member that is fixed to the key rod and whose tip engages with the catch member to move the catch member up and down by the rotation of the key rod The locking and safety locking device for a drawer according to claim 1, further comprising a lever. 3. A key plate, wherein a locking mechanism is further provided vertically inside the furniture main body so as to face the operation plate, and is vertically fixed inside the furniture main body. A key actuating lever that moves the key plate up and down in accordance with the rotation of the lock plate, and a locking pin protrudes from the side of each drawer opposite to the engaging pin, and corresponds to each locking pin. The key plate is provided with a plurality of stoppers capable of contacting the contact pins, and the locking pin of each drawer is located at a position where the key plate can pass under the corresponding stopper when the key plate is at the upper end position of the vertical movement section. The locking and safety locking device for a drawer according to claim 2, wherein the key plate is located at a position where it contacts the rear end of the stopper when the key plate is at the lower end position. 4. A key insertion part, a key rod turned in conjunction with a forward / reverse operation of the key insertion part by a key operation,
A key plate vertically installed inside the furniture main body so as to be able to move up and down in opposition to the operation plate, and a key plate fixed to the key stick, the tip of which is engaged with the key plate and the key plate is turned in accordance with the rotation of the key stick. A key actuating lever for moving up and down, a locking pin protruding from a side of each drawer opposite to the engaging pin, and an abutting pin abutting on the key plate corresponding to each locking pin. A plurality of possible stoppers are provided, and the lock pin of each drawer is at a position where the key plate can pass under the corresponding stopper when the key plate is at the upper end position of the vertical movement section, and the key plate is at the lower end position. The locking and safety locking device for a drawer according to claim 1, wherein the device is located at a position where it abuts a rear end of the stopper at one time. 5. The operating plate has an engagement piece at an upper end, and the catch member has a catch piece that snap-fits into the engagement piece, and a catch mounting plate that holds the catch piece. 2. The locking and safety locking device for a drawer according to claim 1, wherein a slide guide slidably engaging with the operating plate is provided at a lower end of the catch mounting plate.