JPH11107594A - Locking device for door of furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unitize and miniaturize an entire device and to prevent each part from being deformed or broken even if exerted with the force to forcibly open a locked door. SOLUTION: A locking rod 23 is fitted into a solenoid main body 9, is expandably and contractably supported, and is made to directly enter the operating area of a stopper arm 16 with no intervention between the locking rod 23 and the stopper arm 16, so that the locking rod 23 is locked to and unlocked from the stopper arm 16. Thus even if a lateral external force works to forcibly open a door 2, each part can fully withstand deformation and damage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device for furniture in which a rotating door such as a locker or a cabinet can be easily locked and unlocked using electricity.

[0002]

2. Description of the Related Art Conventionally, as this type of lock device, Japanese Utility Model Publication No. 3-12131 is known. In this device, the door can be electrically locked and unlocked by the electromagnetic solenoid, so that the locking and unlocking operation can be performed more easily than the locking and unlocking by a lock.

In particular, when locking and unlocking many lockers and cabinets, a key operation is required for each locker or cabinet in the case of a lock, whereas a locker or cabinet equipped with this device is required. By controlling the electromagnetic solenoids, it is possible to lock and unlock each locker and cabinet at the same time, making locking and unlocking work very easy, so that all lockers and cabinets can be locked or unlocked at the time of leaving or leaving the company. Locking is possible, which is effective in preventing theft of documents and the like.

[0004]

However, in this device, the locking member of the lock body, which is linked to the electromagnetic solenoid, is moved from the center of rotation of the lock body to the latch rod to be disengaged by the vertical rotation of the lock body. It extends for a long time, so if you include a cylinder lock to unlock the door used in the event of a power outage or failure of an electrical device while it is electrically locked, the entire device will be large Had the disadvantage of becoming

[0005] Further, since the latching member on the latch rod side that engages with and disengages from the lock body that is linked to the electromagnetic solenoid extends from the latch rod toward the lock body side, when the door is locked, the door is locked. There is a problem that when a force for prying is applied, the locking body and the locking body are likely to be deformed or damaged.

The present invention solves such a problem, so that the entire apparatus can be unitized and miniaturized, and even if a force is applied to open the door in a locked state of the door, the components are applied to each part. An object of the present invention is to provide a door lock device for furniture that does not deform or break.

[0007]

In order to achieve the above object, a door lock device for furniture according to the present invention comprises a latch rod which can be engaged with an engaging portion of a furniture main body at both ends and is opened and closed on the furniture main body. The latch bar is rotated by urging the rear surface of the door freely pivoted in the engagement direction in the engagement direction to pivotally support the door, and rotating the latch bar in conjunction with the operation of a lever provided on the door surface, and In a door latch device for furniture that can release the engagement with the engaging portion, an electromagnetic solenoid main body, and a telescopic shaft inserted and supported in the electromagnetic solenoid main body so as to be able to expand and contract in relation to the operation of the electromagnetic solenoid. A locking member attached to a side surface of the latch rod, and the telescopic shaft is directly extended and retracted into an operation area of the locking member obtained by rotation of the latch rod, thereby engaging the locking member. Remove and turn the latch rod Is characterized in that the one of the dynamic disabled state. According to this feature, the telescopic shaft is inserted and fitted into the solenoid body and supported so as to be extendable and contractable, and the telescopic shaft is connected to the operating region of the locking member without providing any intervening member between the telescopic shaft and the locking member. The door is directly penetrated into the inside and is engaged with and disengaged from the locking member. Therefore, even if a lateral external force is applied when prying the door open, the door can sufficiently withstand deformation and breakage.

[0008] The door locking device in the furniture of the present invention,
Preferably, the telescopic shaft is provided so as to be parallel to and close to the latch rod. With this configuration, since the telescopic shaft is provided so as to be parallel to the latch bar, the device can be arranged close to the latch bar, so that the entire device can be downsized.

[0009] The door locking device in the furniture of the present invention,
It is preferable that a bearing portion for the telescopic shaft is provided near the locking member on the back surface of the door. By doing so, the bearing portion of the telescopic shaft is provided in the vicinity of the locking member, so that even if a force for prying the door is applied, the external force acting on the solenoid body side via the locking member is reduced. Can be reduced.

[0010] The door locking device in the furniture of the present invention is:
The telescopic shaft is configured to be shallowly engaged with the locking member of the latch bar, and the door is provided with a cylinder lock having a moving part that moves by a key operation. It is preferable that the engagement state between the telescopic shaft and the locking member can be released. In this way, when a solenoid with a small stroke is used, the telescopic shaft is engaged with the locking member of the latch rod shallowly, so that the key operation of the cylinder lock can be performed with a light operating force or immediately. Can be canceled.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a locker to which the present invention is applied, and FIG. 2 is a view showing a locked state of a lock device. First, FIG. 1 shows a locker 1 to which the present invention is applied.
Are provided in a plurality of rows, 2 is a door pivotally attached to the front surface of the locker 1 so as to be openable and closable, and 3 is a handle hole provided for opening the door 2 on the front surface.

The door 2 is formed in a hollow shape by a thin plate material. The open end in the hollow portion engages with an engaging portion provided at a predetermined position of a main body of the locker 1 at upper and lower ends. A pair of upper and lower latch bars 5, 5 'having latch claws 4, 4' are provided, and a lock device 6 of the present invention, which will be described later, is provided near the pull hole 3.

In the lock device 6, a key hole 7a is
A cylinder lock 7 and an electromagnetic solenoid 9 which will be described later, which are opened at a position below the handle hole 3 on the front face of the front side, are provided inside. Then, the electromagnetic solenoids 9 provided in the individual lockers 1 are all connected to one switch unit 8 provided in a suitable place outside the lockers 1 (FIG. 1).

As shown in FIG. 2, one end of each of the pair of upper and lower latch bars 5, 5 'is supported by upper and lower plates 13a, 13b on a substrate 13 constituting the lock device 6, and the other ends are respectively provided. Bearings 10, 10 'fixed to the upper and lower ends of the door 2
It is supported by And these latch bars 5, 5 '
Is connected to a rotating member 14 pivotally supported between the upper and lower plates 13a and 13b of the substrate 13 so as to rotate with the rotating member 14.

At the upper and lower ends of the latch bars 5, 5 ', latch claws 4, 4' are fixed so as to protrude rearward from a hole (not shown) of the door 2. Here, since the latch bar and the latch claw have the same structure in the upper and lower parts, only the upper part will be described. The latch claw 4 is adapted to be disengaged from an engagement hole (not shown) of the rocker 1 by rotation of the latch bar 5. Further, since the latch bar 5 is always urged to rotate in the engaging direction of the latch claw 4 by an appropriate urging means (not shown), when the door 2 is closed, the latch claw 4 is automatically engaged with the latch claw 4. It is designed to be engaged with the hole.

In FIG. 2, reference numeral 15 denotes a lever fixed to the upper part of the rotating member 14, the tip of which is located at the handle hole 3 (FIG. 1).
Reference). A stopper arm 16 serving as a locking member that restricts rotation of the rotating member 14 by engagement with a locking rod described later is fixed to a lower portion of the rotating member 14 so as to protrude in the radial direction.

Next, the lock device 6 will be described. FIG. 3A is a diagram showing a locked state of the lock device,
(B) is an AA cross-sectional view of (a), and (c) is a B- view of (a).
B sectional view, FIG. 4 (a) is a view showing an unlocked state of the lock device, (b) is a CC sectional view of (a), and FIG. 5 (a) is a locked state by a key operation of the cylinder lock. FIG. 5 is a view showing a state in which the lock device of FIG.

As shown in FIGS. 3 (a) and 3 (b), on the back surface of the cylinder lock 7 fixed below the handle hole 3 on the substrate 13, a key inserted into the key hole 7a is provided. A sliding plate 17 that slides in the left-right direction by operation is provided.

An L-shaped unlocking lever 18 is fixed to the end of the sliding plate 17 on the opposite side of the rotating member 14, the other end of which extends toward the rotating member 14 and approaches the rotating member 14.
The lower end of this tip is cut out to form a locking groove 19.

An inverted L-shaped support plate 20 is attached to the lower surface of the lower plate 13b of the substrate 13.
An electromagnetic solenoid 9 is fixed to the vicinity of the latch rod 5 'on the upper side of the cylinder 0 with an operating shaft 9a fitted to the tip of the solenoid so as to extend and contract upward.

A connecting bracket 21 formed in a U-shape is attached to the tip of the operating shaft 9a while being urged upward through a compression spring 22. The back of the connecting bracket 21 is attached to the support plate. The sliding of the connection bracket 21 is restricted by sliding contact with the upper surface of the connecting bracket 20.

The lower end of a locking rod 23 as a telescopic shaft is fixed to the upper end of the connecting bracket 21.
The upper end of the lock rod 3 extends through the lower plate 13b to the same height as the stopper arm 16 of the rotary member 14. 24 is provided so as to protrude to one side.

That is, in this state, the locking shaft 24 is provided in parallel with the vicinity of the latch rods 5 and 5 ', and has a corresponding relationship with the locking groove 19 below the tip of the lock release lever 18 described above. The locking shaft 24 can be engaged with and disengaged from the locking groove 19 by the expansion and contraction of the locking rod 23.

Above the support plate 20, a guide plate 25 having a through hole 25a as a bearing portion for slidably inserting and supporting the locking rod 23 is vertically provided to project forward, whereby the engaging member is engaged. The upper limit of the lateral movement of the stopper rod 23 and the upward movement thereof is regulated.

More specifically, the lower end of the locking rod 23 is fixed to the connecting bracket 21 by two nuts N1 and N2, and the operating shaft 9 is extended when the solenoid 9 is operated.
When a moves upward, the upper nut N2 comes into contact with the bottom surface of the guide plate 25.

Thus, the extra stroke of the operating shaft 9a is restricted, and the locking shaft 24 is moved upward by the locking rod 23.
When the lock lever is locked in the locking groove 19, a load that pushes the lock release lever 18 upward is not applied.

In order to detect the upper and lower limits of the locking rod 23 which expands and contracts with the operating shaft 9a by the operation of the solenoid 9, the connecting bracket 21
Limit switch L for detecting the upper limit of the locking rod 23
S1 and a limit switch LS2 for detecting a lower limit are arranged vertically.

As described above, the solenoid 9, the connecting bracket 21, the locking rod 23, the guide plate 25, and the limit switches LS1, LS2 constituting the lock device 6 are formed.
Is mounted on the support plate 20 to form a unit, and this unit is mounted on the lower surface of the lower plate 13b of the substrate 13.

Hereinafter, the operation of the embodiment of the present invention will be described with reference to FIGS.
To explain with reference to FIG.
When the FF is set, the shaft 9a of the electromagnetic solenoid 9 of each rocker 1 is in a fully contracted state as shown in FIGS. 4 (a) and 4 (b). Then, the locking shaft 24 at the tip of the locking rod 23 is disengaged from the locking groove 19 below the tip of the lock release lever 18 and the engagement is released. Since it has descended to a position lower than the height position, the rotation of the pull member 15 and the upper and lower latch bars 5, 5 'is allowed, and the door 2 can be freely opened.

That is, in this state, the connecting bracket 21
Is detected by the lower limit detection limit switch LS1, it can be confirmed that the locked state has been released.

Next, with each door 2 closed, switch unit 8
Is turned on, and when the shaft 9a of each electromagnetic solenoid 9 is extended, as shown in FIGS. 3 (a), 3 (b) and 3 (c), the locking rod 23 is raised via the connecting bracket 21. Then, when the stopper arm 16 is directly expanded and contracted into the operation area of the stopper arm 16 obtained by the rotation of the latch rods 5 and 5 ′, the locking shaft 24 protruding to one side above the locking rod 23 becomes the locking groove 1.
9 is engaged.

In this state, the tip end of the locking rod 23 is located at least at the same position (in the operation area) as the height position of the stopper arm 16 of the rotating member 14, and the rotation shown in FIG. The counterclockwise rotation of the member 14 causes the locking rod 23 to rotate.
The rotation of the rotary member 14 in the counterclockwise direction, that is, the rotation of the latch claws 4 and 4 ′ (see FIG. 1) in the direction of disengagement from the engagement hole is prevented. Therefore, the door 2 is locked in the closed state and cannot be opened.

The upper limit of this locking rod 23 is
The locked state can be confirmed by detecting the lower end of 1 by the upper limit detection limit switch LS2.

Further, in the locked state as described above, the cylinder lock 7 of any locker 1 is locked.
When the lock operation is appropriately performed using a key, (a) in FIG.
(B) As shown in FIG.
Is moved to the left in the drawing.

By this lateral movement, the locking shaft 24 moves downward along the inclined surface of the locking groove 19, so that the locking shaft 24 is disengaged from the locking groove 19 below the distal end and disengaged. .

As a result, the tip of the locking rod 23 is at a position lower than the height position of the stopper arm 16 of the rotating member 14, and the locking rod 23 is separated from the operation area of the stopper arm 16, so that the pull member 15 and the upper and lower The rotation of the latch bars 5, 5 'is allowed, and the door 2 can be freely opened.

Therefore, when the locker 1 is locked by the electromagnetic solenoid 9, each locker 1
Door 2 can be individually opened by key operation.

As described above, in the door locking device for furniture and the like according to the present invention, the locking rod 23 is inserted into the solenoid body 9 and is supported so as to be extendable and contractable. The locking rod 23 is directly inserted into the operation area of the stopper arm 16 and is disengaged from the stopper arm 16 without providing any intervening member between the stopper arms 16. Even if external force in the direction works,
It can fully withstand deformation and breakage.

Further, since the locking rod 23 is provided so as to be parallel to the latch rods 5 and 5 ', the apparatus can be operated with the latch rods 5 and 5'.
, The entire device can be downsized. And since the whole apparatus is miniaturized and configured to be unitized, it is possible to check the assembly state and the movement state between the parts assembled in the unit without directly incorporating the parts into the door.

Further, since a guide plate 25 having a through hole 25a for guiding and supporting the locking rod 23 is provided in the vicinity of the locking member 16, even if a force for prying the door is applied. The external force acting on the solenoid body via the locking member 16 can be reduced.

When a solenoid having a small stroke is used, the locking rod 23 is shallowly engaged with the locking member 16 of the latch rods 5 and 5 '. The engagement can be released by force or immediately.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention, the present invention will be described. Included in the invention.

[0043]

The present invention has the following effects.

(A) According to the first aspect of the present invention, the telescopic shaft is inserted and fitted into the solenoid body and supported so as to be able to expand and contract, and no intervening member is provided between the telescopic shaft and the locking member. The telescopic shaft is directly inserted into the operating area of the locking member and is engaged and disengaged from the locking member, so it can sufficiently withstand deformation and breakage even if external force acts in the lateral direction when trying to pry open the door. Can be.

(B) According to the second aspect of the present invention, since the telescopic shaft is provided so as to be parallel to the latch bar, the device can be arranged close to the latch bar, so that the entire device can be downsized. it can.

(C) According to the third aspect of the present invention, since the bearing portion of the telescopic shaft is provided in the vicinity of the locking member, even if a force for prying the door is applied, the force is applied via the locking member. External force acting on the solenoid body side can be reduced.

(D) According to the fourth aspect of the present invention, when a solenoid having a small stroke is used, the key operation of the cylinder lock is light because the telescopic shaft is engaged with the locking member of the latch rod shallowly. The engagement can be released by operating force or immediately.

[0048]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a locker to which the present invention is applied.

FIG. 2 is a diagram showing a locked state of a lock device.

3A is a view showing a locked state of the lock device, FIG. 3B is a sectional view taken along line AA of FIG. 3A, and FIG. 3C is a sectional view taken along line BB of FIG.

FIG. 4A is a view showing an unlocked state of a lock device;
(B) is CC sectional drawing of (a).

FIG. 5A is a view showing a state in which a locked lock device is unlocked by a key operation of a cylinder lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locker 2 Door 3 Pull hole 4, 4 'Latch claw 5, 5' Latch bar 6 Lock device 7 Cylinder lock 7a Lock hole 8 Switch part 9 Electromagnetic solenoid body 9a Operating shaft 10, 10 'Bearing 13 Substrate 13a Upper plate 13b Lower Plate 14 Rotating member 15 Lever 16 Stopper arm (locking member) 17 Sliding plate 18 Lock release lever 19 Locking groove 20 Support plate 21 Connecting bracket 22 Compression spring 23 Locking rod (expandable shaft) 24 Locking shaft 25 Guide plate (Bearing part) 25a Through hole

Claims (4)

[Claims] 1. A pivot rod, which is rotatable in the engaging direction on the back surface of a door pivotally attached to the furniture body so that the latch rod can be engaged with the engagement portion of the furniture body at both ends. A door latch device for furniture that can release the engagement between the latch claw and the engaging portion by rotating the latch bar in conjunction with the operation of a lever provided on the door surface, comprising: Having an expansion / contraction shaft inserted and supported in the electromagnetic solenoid main body so as to be capable of expanding and contracting in relation to the operation of the electromagnetic solenoid, and a locking member attached to a side surface of the latch rod. By directly expanding and contracting the telescopic shaft within the operation region of the obtained locking member, the telescopic shaft is disengaged from the locking member, and the latch rod is set in either a rotatable or non-rotatable state. Door locking device in furniture. 2. The door lock device for furniture according to claim 1, wherein the telescopic shaft is provided so as to be close to and parallel to the latch bar. 3. The bearing of the telescopic shaft is provided near the locking member on the back surface of the door.
A lock device for a door in furniture as set forth in Claim 1. 4. The telescopic shaft is configured to be shallowly engaged with a locking member of the latch bar, and the door is provided with a cylinder lock having a moving portion that moves by a key operation,
The door lock device for furniture according to any one of claims 1 to 3, wherein an engagement state between the telescopic shaft and the locking member can be released by moving the moving portion.