JPH10159422A - All-lock device for drawer in cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the construction of an all-lock device for drawers and to make it possible to lock the drawers with high degree of accuracy. SOLUTION: A crank body 26 constituted of a contact arm 30 coming into contact with a dead-bolt 23 of a lock 24 provided to the front board of a drawer 5 on the top stage, an operation arm 21 for raising and lowering a lock lever 12 provided to a side board 2 of a cabinet main body 1 in a horizontally and vartically movable manner and a rotation center shaft 27 having a rotation axis in the front and rear directions are arranged to the top rail section of the cabinet main body 1, all drawers are pushed into the cabinet main body 1, and when lock operation is made with a key, the dead-bolt 23 is raised to push the contact arm 30 in the crank body 26 upward against urging force of a torsion spring 3, and the operation arm 21 is turned downward. Since the operation arm 21 is inserted between a pair of up and down control pieces 13 and 14 in the lock lever 12, stopper pieces 17 provided to the lock lever 12 lowered by specific quantity are fitted to an engagement section 16 of the outside of a side board in each of the drawers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desk drawer, a wagon-type side desk, a cabinet body such as a wagon-type cabinet and the like, which is provided with a plurality of drawers of upper and lower stages (hereinafter simply referred to as cabinet). The present invention relates to a structure of an all-lock device capable of locking these drawers with one lock at a time.

[0002]

2. Description of the Related Art Conventionally, as an all-lock device of this type, Japanese Utility Model Publication No. 57-38530 discloses an engaging portion provided on a vertically long lock rod disposed on the inner surface of a cabinet body. While it is configured to be disengaged from the stopper on the side of the drawer of each stage by rotation about the axis,
One lock is attached to the front plate of the uppermost drawer, and a pressing rod connected to the dead bolt of the lock is configured to be movable in a substantially horizontal direction within the front plate, and all drawers are placed in the cabinet body. In the pressed state, the tip of the pressing rod presses a protrusion provided on one side of the lock rod horizontally in the locking direction by locking the lock, and all the drawers are simultaneously rotated by the rotation of the lock rod. Is disclosed.

On the other hand, in Japanese Utility Model Publication No. 5-89748,
An engaging portion provided on the lock rod, which is vertically and vertically movable by engaging a vertically long locking rod arranged on the inner surface of the cabinet body with a rotating plate also pivotably supported on the inner surface of the cabinet body. The lock rod is configured to be disengaged from the stopper on the side of the drawer by the vertical movement of the lock rod, while one lock is attached to the front plate of the uppermost drawer and the dead bolt of the lock is locked. It is configured to rise during operation, and a lower shaft of the upper frame of the cabinet main body is mounted with a rotating shaft that rotates around an axis in the front-rear direction via a fixture and fixed to the front end of the rotation shaft. The protrusion on the lower surface of the distal end of the operating tool is brought into contact with the dead bolt, and the shaft protruding backward from the distal end of the connecting plate fixed to the rear end of the rotating shaft is engaged with the notch of the vertical rocking plate. Then, the tip of this vertical rocking plate is cut out at the upper part of the lock rod. Configuration engaged is disclosed in section.

[0004]

However, in Japanese Utility Model Publication No. 5-89748, the number of parts is large.
Since the number of parts from the rotation shaft to the lock rod is large, the play size of the associated engaging portion becomes large. Therefore, the lock and the lock are fixed with respect to the fixed dead bolt rising amount of the lock. The lift of the lock rod for releasing the lock was uncertain.

An object of the present invention is to eliminate these problems and to provide a device that can be securely locked with a simple configuration.

[0006]

According to a first aspect of the present invention, there is provided an all-lock device for a drawer in a cabinet according to the present invention, wherein a plurality of drawers are mounted on a cabinet body so as to be able to be pulled out and moved back and forth. An all-lock device, wherein a vertically movable lock rod is disposed, and the drawers of all stages pushed into the cabinet body are locked and unlocked by the vertical movement of the lock rod. In the upper part of the front plate of the drawer, a lock with a dead bolt that rises during the lock operation is provided,
In the upper frame portion of the cabinet body, there is disposed a crank body having a contact arm contacting the dead bolt and an operating arm for raising and lowering the lock rod.

[0007] The invention described in claim 2 is the first invention.
In the all-lock device of the drawer in the cabinet according to the above, a pair of upper and lower regulating pieces having a cross section that is formed in a convex curved shape that abuts on the upper and lower surfaces of the operating arm protrude from an upper end portion of the lock rod, The crank body or the lock rod is provided with an urging spring for urging the lock rod to be at the raised position when the lock is released.

[0008]

Next, embodiments of the present invention will be described. 1 is a perspective view of a wagon-type cabinet, FIG. 2 is a perspective view of a main part of an all-lock device, and FIG. 3 is an enlarged side sectional view taken along line III-III in FIG. A cabinet body 1 made of a metal plate includes left and right side plates 2 and 2, a top plate 3 having a large opening in a central portion and including a peripheral side plate, a bottom plate (not shown), and a caster mounted on the bottom plate and capable of changing the direction. The drawers 5, 6, and 7 are arranged so as to be able to be pulled out and moved forward and backward via rails (not shown) provided on the inner surfaces of the left and right side plates 2 and 2. On the top surface of the top plate 3, another table plate 8 made of wood or the like is fixed.

Next, the operation configuration of the all-lock device 20 will be described with reference to FIGS. First, a pair of front and rear reinforcing frames 10 and 11 are fixed by spot welding or the like on the inner surface of the right side plate 2 of the cabinet body 1 so as to have a vertically long guide groove 9 at the forward position. The lock rod 12, which is vertically long and has a substantially U-shaped cross section, is vertically movably arranged. A pair of upper and lower restricting pieces 13, 14 abutting on upper and lower surfaces of an operation arm 21 of an all-lock mechanism 20 described below are provided on the upper end of the lock rod 12.
Are provided to be bent laterally. The pair of restricting pieces 13 and 14 are formed in, for example, an arc-shaped cross section such that the side that contacts the upper and lower surfaces of the operation arm 21 has a convex curve. The lock rod 12 has a stopper that engages with an upwardly open engaging portion 16 formed in the reinforcing rail 15 serving as a rail provided on the outer surface of the right side plate of the drawers 5, 6, 7 of each stage. The piece 17 is also bent.

A lock 24 on which a dead bolt 23 moves up and down is fixed by a key 22 to an upper portion of the front plate 5 a of the uppermost drawer 5. On the other hand, a mounting member 25 having a rectangular cross section is fixed to the inner surface of the front frame 1 a of the cabinet body 1, and a crank body 26 is mounted on the mounting member 25. The crank body 26 includes a rotation center shaft 27 which is rotatably supported at both front and rear portions by the mounting member 25,
A horizontal bar 28 protruding laterally from the rotation center shaft 27 on the rear side of the mounting member 25, an operating arm 21 having a round bar shape or the like protruding rearward from the tip of the horizontal bar 28, An abutting arm 30 having a downwardly convex cross section is provided at an end of an arm 29 that projects laterally from the middle. The lower surface of the contact arm 30 is set so as to face the upper end of the dead bolt 23 of the lock 24.

In a normal (unlocked position), the lock rod 12 is in the raised position, and the stopper piece 17 is disengaged upward from the engaging portion 16 of each of the drawers 5, 6, 7 so that it can be pulled out. Of the torsion spring 31 as an urging spring is fitted on the rotation center shaft 27, and one end 31 a of the torsion spring 31 is attached to the contact arm 30.
And the other end 31b of the torsion spring 31 is locked to the lower surface of the upper frame 1a.

Next, the operation of the all-lock device 20 will be described. All the drawers 5, 6, 7 are pushed into the cabinet body 1, and then the lock 22 is
When the lever 4 is rotated in the locking direction, the dead bolt 23 rises by a certain amount, and pushes the contact arm 30 of the crank body 26 upward against the urging force of the torsion spring 31.
As a result, since the rotation center shaft 27 is rotated clockwise in FIG. 2, the operation arm 21 is rotated downward via the horizontal bar 28. This operating arm 21 is connected to the lock rod 12.
3, the lock rod 12 is lowered by a predetermined amount by the rotation of the crank body 26 in the predetermined lock direction (the direction of the arrow A in FIG. 3). ), The stopper piece 1 provided on the lock rod 12
7 fits into the engaging portion 16 on the outer surface of the side plate of each of the drawers 5, 6, and 7 and can be all locked (see the two-dot chain lines in FIGS. 3 and 4).

Conversely, when the key 22 is turned in the unlocking direction, the dead bolt 23 in the lock 24 is lowered, and the crank body 26 is moved by the urging force of the torsion spring 31 as shown in FIG.
, The lock rod 12 is raised by a fixed amount via the operating arm 21 and the pair of upper and lower regulating pieces 13 and 14, and the stopper piece 17 is
Since each of the drawers is disengaged upward from the engaging portions 16 of the sixth and seventh, each drawer can be freely pulled back and forth.

The sectional shape of the pair of upper and lower restricting pieces 13 and 14 of the lock rod 12 is
If the curved surface is convex on the side that comes into contact with the upper and lower surfaces of the operating arm 2,
Even if it is formed so as to be equal to the dimension between the upper and lower surfaces, since the side of the pair of restricting pieces 13 and 14 is spread vertically, the operating arm 21 is moved to the wide portion. And a pair of upper and lower restriction pieces 1
Since the convex and curved surfaces 3 and 14 are in line contact with the upper and lower surfaces of the operation arm 21, the lock rod 12 can be moved up and down without rattling.

In order to always urge the lock rod 12 to the upper position, a tension spring is mounted between the lock rod 12 and the cabinet body 1 instead of the torsion spring 31 mounted on the crank body 26. May be configured.

[0016]

As described above, according to the first aspect of the present invention, the all lock device for the drawer in the cabinet according to the first aspect of the present invention has a plurality of drawers which are vertically movable on the inner surface of the cabinet body in which the drawers can be pulled back and forth. In an all-lock device, a possible lock rod is arranged, and the drawers of all stages pushed into the cabinet body are locked and unlocked by the vertical movement of the lock rod. A lock provided with a deadbolt that rises during a locking operation is provided on the upper part of the face plate, and a contact arm that contacts the deadbolt and an operating arm that raises and lowers the lock rod are provided on the upper frame of the cabinet body. The protruding crank body is arranged.

According to this structure, since only the crank body having the contact arm and the operating arm needs to be disposed between the dead bolt of the lock and the lock rod, the number of components is extremely reduced, and the distance between adjacent components is reduced. The gap can be made extremely small and the all-lock can be performed with high accuracy. Claim 2
According to the invention described in claim 1, in the all-lock device for a drawer in a cabinet according to claim 1, the upper end of the lock rod has a pair of upper and lower upper and lower surfaces that are in contact with the upper and lower surfaces of the operating arm and are formed in a convex curved shape. Therefore, even if the narrowest space between the upper and lower restricting pieces is formed to be equal to the dimension between the upper and lower surfaces of the operating arm, the side of the pair of restricting pieces may be formed. Are spread vertically, so that the operating arm can be easily attached to the wide area, and the upper and lower surfaces of the operating arm are in line contact with the convex curved surfaces of the pair of upper and lower restricting pieces. There is an effect that the lock rod can be moved up and down without being pulled.

Since the crank body or the lock rod is provided with an urging spring for urging the lock rod to the raised position when the lock is released, the dead weight of the lock rod and dead weight during the lock operation are provided. By pushing up the contact arm with the bolt, the lock can be turned in the locking direction with a light force.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cabinet.

FIG. 2 is a perspective view of a main part of the all-lock device.

FIG. 3 is an enlarged side sectional view taken along line III-III of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet main body 1a Upper frame 5, 6, 7 Drawer 12 Lock rod 13, 14 Restriction piece 16 Engagement part 17 Stopper piece 20 All lock device 21 Operation arm 23 Dead bolt 26 Crank body 27 Rotation center axis 28 Horizontal rod 29 Arm 30 contact arm 31 torsion spring

Claims (2)

[Claims] 1. A vertically movable lock rod is arranged on an inner surface of a cabinet body on which a plurality of drawers are mounted so as to be able to be pulled out and moved forward and backward, and the lock rod is pushed into the cabinet body by the vertical movement of the lock rod. In the all-lock device configured to lock and unlock the drawers of all the stages, a lock with dead bolts that rises during the locking operation is provided at the upper part of the front plate of the drawer, An all-lock device for a drawer in a cabinet, wherein a crank body having a contact arm contacting the dead bolt and an operating arm for raising and lowering the lock rod is disposed in the frame portion. 2. A pair of upper and lower restricting pieces, each having a convexly curved cross section that comes into contact with the upper and lower surfaces of the operating arm, protrude from an upper end of the lock rod. 2. The all lock device for a drawer in a cabinet according to claim 1, further comprising an urging spring for urging the lock rod to be at the raised position when the lock is released.