JPH09317294A - Locking/unlocking device in multiple drawer cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability by fitting an electromagnetic solenoid which is elevated/lowered on an elevating/lowering rod in a box body slidably in the axial direction, and installing a cylinder lock. SOLUTION: When an electromagnetic cylinder lock 35 is locked, an electromagnetic solenoid 29 of a locking device 21 is retracted, and an elevating/ lowering rod 6 is slightly elevated through a turning ring 26 and an oscillation plate 17, and a depressing projection of the elevating/lowering rod 6 covers the forward part of a projection provided on a side of a drawer 2, and any drawer can not be drawn out. When the locking device 21 is locked and a part of the opened drawers 2 are closed, a fitting plate 28 of the solenoid 29 slides upward, and the link 26 is permitted to turn and the elevating/lowering rod 6 is permitted to move downward, and the drawers 2 are closed, and the fitting plate 28 is returned downward so as to be in the locked condition. When the device 21 is locked in the locked condition, a manual cylinder lock 54 is operated, and in cooperation with a slidably contact rod 55 and the fitting plate 28, the elevating/lowering rod 6 is moved to unlock all drawers 2. Locking/ unlocking can be easily performed, and the structure can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking / unlocking device for a multi-stage drawer cabinet in which a plurality of drawers are vertically mounted in a box body.

[0002]

2. Description of the Related Art Conventionally, as this type of lock device, Japanese Utility Model Publication No. 4-32465 has been disclosed. This device is configured such that a plurality of drawers are mounted in a box in a multi-stage manner in a box body, and a latch claw rotatably provided at the rear end of each drawer is arranged so as to be rotatable back and forth disposed in the box body. It is configured to be urged in the direction of engagement with the vertically-engaged vertically-engaged engagement member so that the engagement with the engagement member can be released by a lock provided on the front plate of the drawer to which each of the latch claws is attached. On the other hand, an electromagnetic solenoid for rotating and driving the engaging member in a direction for simultaneously engaging and disengaging all the drawers inserted into the box with the latch claws is provided in the box.

In this device, an electromagnetic solenoid is used to
Since all the drawers can be locked and unlocked electrically at the same time, locking and unlocking can be performed more easily than locking and unlocking by locks. Especially when locking and unlocking many cabinets, in the case of locks, key operation is required for each cabinet, whereas in the case of cabinets equipped with this device,
Simultaneous locking and unlocking of each cabinet is possible by making the central control unit control the electromagnetic solenoid of each cabinet, locking and unlocking work is very easy, simultaneous locking of all cabinets when leaving the office, all cabinets when leaving the office Can be unlocked simultaneously, which is effective in preventing theft of documents and the like.

[0004]

However, in such a device, locking is performed with the drawer appropriately opened, and the user tries to close the opened drawer without knowing the locked state. When doing so, not only the parts of the locking device may be damaged, but also the key operation for the lock for each drawer is required to close the drawer in such a state.

Further, a lock is provided for each drawer, and the latch can be rotated by the lock to release the engagement between each latch claw and the engaging member. In the event of a power outage or failure of an electrical device, etc. in the locked state, in order to unlock each drawer, all drawers can be opened unless a key is inserted into the lock of each drawer and operated. And the operation is troublesome.

Therefore, a lock and a mechanism for linking the lock and the latch claw are required for each drawer, so that the apparatus becomes expensive.

The present invention has been made in view of such a problem, and a first object is to easily close a drawer even if a part of the drawer is locked while being opened. A second object of the present invention is to provide a locking / unlocking device in a multi-stage drawer cabinet which can be installed in a proper position of a box when a power failure or a failure of an electric device occurs in an electrically locked state. It is an object of the present invention to provide a locking / unlocking device for a multi-stage drawer cabinet which is capable of unlocking all drawers at the same time by the key operation of the cylinder lock, and which has a simple structure and is inexpensive.

[0008]

In order to achieve the above object, a locking / unlocking device in a multi-stage drawer cabinet of the present invention has a plurality of drawers mounted vertically in a multi-tiered manner in a box body and an inner surface of the box body. In the locking / unlocking device in the multi-stage drawer cabinet, in which the lifting rod is mounted so as to be vertically movable, and between the lifting rod and each of the drawers, an engaging / disengaging means capable of locking and unlocking all the drawers simultaneously by the vertical movement of the lifting rod is provided. All the drawers can be locked and unlocked at the same time by moving the lifting rod up and down in conjunction with the key operation of the cylinder lock installed at the proper position of the box body, and by linking with the lifting rod, the lifting rod can be moved up and down. An electromagnetic solenoid that is slidable in the same direction as the shaft of the electromagnetic solenoid, is attached to the inside surface of the box, and a spring having a weaker biasing force than the shaft holding force of the electromagnetic solenoid is attached to the electromagnetic solenoid. De axis is characterized in that provided between the electromagnetic solenoid and the box body so as to bias the direction of movement during locking. According to this feature, while the shaft of the electromagnetic solenoid remains locked, the main body of the electromagnetic solenoid can slide in the same direction as the expansion and contraction of the shaft of the electromagnetic solenoid against the urging force of the spring. The drawer that has been opened can be easily closed, and all drawers are automatically locked even after the drawer is closed.

The locking / unlocking device in the multi-stage drawer cabinet according to the present invention is characterized in that another cylinder lock, which can be moved up and down by a key operation of the lifting rod, is provided at an appropriate position of the box body. There is. In this way, if a failure or the like of an electric device occurs in an electrically locked state, the locking of all drawers can be simultaneously unlocked by operating a key of another cylinder lock provided in a proper position of the box. Therefore, it is excellent in operability, and it is not necessary to provide a lock and a mechanism linked to the lock for each drawer, so that the structure of the entire apparatus is simplified and an inexpensive apparatus can be provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a cabinet for storing documents to which the present invention is applied. The drawers 2 are accommodated in the upper and lower three stages. Traveling rails 4 that can be fitted into guide rails 3 that are slidably mounted in the front-rear direction are fixedly provided on respective inner side surfaces of the box 1 on both side surfaces of the drawer 2. It can be put in and out of the box 1. Projectors 5 are provided at predetermined locations on both side surfaces of each of the drawers 2.

An elevating rod 6 slightly shorter than the height of the box 1 is supported by a support plate 10 (see FIG. 2) vertically on both inner side surfaces of the box 1 so as to be able to move up and down. Between the lower end of the middle-right lifting rod 6 and the lower end of the right side plate,
A catch 7 made of synthetic resin is provided.

The front end surface of the upper plate 1a of the box 1 has key holes 35a for an electromagnetic cylinder lock and a manual cylinder lock, which will be described later.
54a are respectively formed. An electric cylinder lock may be used instead of the manual cylinder lock.

As shown in FIGS. 5 (a) to 5 (c), the catch 7 comprises an upper gripping tool 8 and a lower fitting tool 9, and the gripping tool 8 has a rectangular box shape with an open lower surface. In addition, a pair of locking pieces 8a that are elastically bent are formed on the inner surface. The lower ends of the locking pieces 8a are always close to each other. The fitting 9 has a tongue-shaped fitting portion 9a with a bulged middle portion and a mounting portion 9b connected to the lower end of the fitting portion 9a. The gripper 8 is fixed to the lower portion of the inner side surface of the box 1, and the fitting 9 is fixed to the lower end of the right elevating rod 6.

A board 12 of a guide 11 to be described later is fixed to a portion of the right elevating rod 6 which is substantially at the same height as each of the projections 5. Downward chevron-shaped push-up protrusions 13 are continuously provided on the upper side surfaces of the substrate 12, and upward-veined chevron-shaped push-up projections (stoppers) 14 are continuously provided on the lower side surfaces.
Between the four, an inclined groove 15 facing forward and downward is formed, through which the protrusion 5 of the drawer 2 can be inserted back and forth. The rear end surface 14a of the pressing projection 14 forms a vertical stopper surface. still,
At the position corresponding to each drawer 2 on the inner side surface of the left elevating rod 6, only the same pressing projection 14 as described above is fixed.

Further, the engaging holes 1 are formed at the upper ends of the both lifting rods 6.
6 is bored, and a tip end portion 17a of a rocking plate 17 which is bent in a stepwise manner is fitted in both engagement holes 16 so as to be slightly movable in the vertical direction (see FIGS. 6 and 9). .

As shown in FIG. 9 in particular, the oscillating plate 1
A hook 18 is projected rearward from a rear plate 17b of the box 7, and the hook 18 is provided in a long hole 20 formed in a supporting member 19 fixed to the back surface of the upper plate of the box body 1. Engagement is engageable.

In front of the rocking plate 17, a manual cylinder lock 5 is formed so that a key hole 54a is opened at the front end surface of the upper plate 1a of the box body 1.
The manual cylinder lock 54 is provided with a sliding contact rod 5 which is rotated by a key operation from a key hole 54a.
5 protrudes rearward. And the sliding contact rod 55 is
When the lock device 21, which will be described later, is in an electrically locked state, it comes into sliding contact with the upper side 17c of the swing plate 17.

An automatic lock device 21 shown in FIGS. 6 to 10 is arranged on the rear side of the upper left inside surface of the box body 1. The automatic lock device 21 has a base plate 22 fixed mainly on the upper left inner surface of the box body 1, and a projecting piece 23 formed on the base plate 22. A pivot link 26 for supporting the vicinity of the tip 17a of the rocking plate 17 from below via a notch 25 (see FIG. 9) formed in the upper part of the front end thereof, and a vertical direction with respect to the substrate 22. An electromagnetic solenoid 29 fixed to a mounting plate 28 slidably mounted.

A lower plate 2 which is continuously provided below the mounting plate 28.
An elongated hole 50 extending in the up-down direction is formed in 8a, and a bolt 27 inserted through the elongated hole 50 is fixed to the substrate 22 so that the mounting plate 28 is elongated with respect to the substrate 22. It is attached so as to be vertically slidable by a length of 50.

The other end of the upper plate of the lower plate 28 is the substrate 22.
One end of an auxiliary spring 52 attached to the tip of a mounting bolt 51 fixed to the lower piece 22a is attached. As the auxiliary spring 52, a spring having a tensile force that is weaker than the holding force of the shaft of the electromagnetic solenoid 29 described later and that can move the elevating rod 6 upward is used. And the mounting plate 2 moved upward
8 is pulled in the returning direction.

A shaft 29a which vertically expands and contracts is fitted above the electromagnetic solenoid 29, and a connecting plate 31 having a horizontal plate 30 at its lower end is attached to the tip thereof.
The upper end of the connecting plate 31 has a shaft 32 and a rotary link 2
6 is pivotally attached to the rear end.

The horizontal plate 30 is fixed to the mounting plate 28 in the vertical direction with a predetermined distance therebetween and is fixed to the upper and lower regulating members 3.
It is possible to move between 3 and 33 '.

Numeral 34 is a biasing spring, one end of which is attached to the rear end of the rotary link 26 and the other end of which is attached to the upper end of a mounting bolt 36 which is attached to the base plate 22. The electromagnetic solenoid 29 is urged in the rotating direction.
Is designed to assist the contracting force of the shaft 29a.

The electromagnetic solenoid 29 is an electromagnetic cylinder lock 35a having a key hole 35a exposed on the upper front surface of the box body 1.
The shaft 29a of the electromagnetic solenoid 29 is contracted by the key operation via the, and the rotary link 26 is rotated around the shaft 24.

In the apparatus thus constructed, when all the drawers 2 are pushed in and the electromagnetic cylinder lock 35 is unlocked, the shaft of the electromagnetic solenoid 29 is driven by the weight of the lifting rod 6 as shown in FIG. 29a extends so that the front end of the rotary link 26 holds the front end of the swing plate 17 at the lower position.

As shown in FIG. 2, both lifting rods 6 are at the lower limit due to their own weight (that is, the lifting rod 6 is suspended from the tip 17a of the rocking plate 17 via the upper side of the engaging hole 16). When doing so, the rear end of the inclined groove 15 of each guide tool 11 is located immediately before the protrusion 5 of each drawer 2. Therefore, each drawer 2 can be freely drawn out, and the gripping tool 8 and the fitting 9 of the catch 7 are vertically separated as shown in FIG.

As shown in FIG. 3, for example, when the middle drawer 2 is pulled out, the right protrusion 5 pushes up the push-up protrusion 13 when passing through the inclined groove 15 of the middle guide tool 11, and the All the guide tools 11 are lifted together with the other lifting rod 6, and the fitting tool 9 that moves up together fits into the gripping tool 8 and elastically engages as shown in FIG. 5B.

Even after the protrusion 5 has passed, the elevating rod 6 on the right side does not descend, and the other protrusions 5 are positioned immediately below the rear end face 14a of the pressing protrusion 14. Therefore, the upper and lower drawers 2
The protrusion 5 cannot be pulled out because its front is blocked by the pressing protrusion 14 of each guide 11. At this time, the left elevator 6
Remains at the lower limit, and does not hinder the movement of the left-hand projection 5 at all.

In the above-mentioned state, when the middle drawer 2 is pushed in, the right protrusion 5 pushes down the push-down projection 14 when passing the inclined groove 15 of the middle guide tool 11 from the front side. The rod 6 also descends, the fitting 9 of the catch 7 is forcibly disengaged from the gripper 8, and the elevating rod 6 on the right side further descends slightly due to its own weight to the state shown in FIG. All drawers 2 can be withdrawn.

When the electromagnetic cylinder lock 35 is locked in the state shown in FIGS. 2 and 7, the shaft 29a of the electromagnetic solenoid 29 contracts as shown in FIG. 8 to rotate the rotary link 26 counterclockwise. Therefore, the tip of the turning link 26 turns the rocking plate 17 upward, and the two lifting rods 6 suspended and supported by the tip 17a of each of the guides 1 are moved as shown in FIG.
1, the upper part of the rear end face 14a of the push-down projection 14 covers the front of each of the protrusions 5, so that all the drawers 2 in the left and right rows are locked so that they cannot be drawn out.

Further, at this time, since the both elevating rods 6 do not move up as much as the above-mentioned simultaneous withdrawal prevention, the catch 7 is not engaged. Therefore, if the power supply to the electromagnetic solenoid 29 is stopped again, as shown in FIG.
9, the shaft 29a is extended again, and the lifting rod 6 is lowered by its own weight and released as shown in FIG.

Further, for example, when the lock device 21 is locked while the drawer 2 is appropriately opened,
When the drawer 2 is to be closed, the raising / lowering rod 6 is moved downward by the anti-tilt device, and the pivot link 2
6 tries to rotate clockwise. At this time, since the shaft 29a of the electromagnetic solenoid 29 is held in the contracted state,
The mounting plate 28 itself is slid upward. Therefore, since the rotation of the rotation link 26 and the downward movement of the lifting rod 6 are allowed, the drawer 2 can be closed.

At the same time when the drawer 2 is completely closed, the mounting plate 28 is automatically returned downward by the auxiliary spring 52 (and the urging spring) to return to the locked state.

When the lock device 21 is locked in a locked state for some reason, the sliding contact rod 5 is operated by a key operation from the key hole 54a of the manual cylinder lock 54.
When 5 is rotated, the mounting plate 28 can slide upward even if the shaft 29a of the electromagnetic solenoid 29 is held in a contracted state and does not move. Therefore, the elevating rod 6 is moved downward and the full withdrawal is performed. 2 can be unlocked at the same time.

In the following, according to the locking / unlocking device of the multi-stage drawer cabinet as the embodiment of the present invention, the electromagnetic solenoid main body resists the urging force of the spring while the shaft of the electromagnetic solenoid remains in the locked state. Since it can slide in the same direction as the expansion and contraction of the solenoid shaft, one manual cylinder lock installed in the proper position on the box in the event of a power failure or electrical device failure while it is electrically locked It is possible to unlock all drawers at the same time by key operation of, and it has excellent operability. Also, the drawer that was open at the time of locking can be easily closed, and it can automatically return to the locked state even after closing. become. In addition, since all drawers can be unlocked at the same time by operating one cylinder lock key, there is no need to provide a lock or a mechanism linked to the lock for each drawer, and the structure of the entire device is simplified and the cost is low. Various devices can be provided.

Further, by providing a sensor for detecting the expansion / contraction state of the shaft of the electromagnetic solenoid, the opening / closing state of the drawer can be grasped without being affected by the key operation of the cylinder lock.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions within the scope not departing from the gist of the present invention, the present invention is not limited. Included in the invention.

For example, in the embodiment, the expansion / contraction operation of the shaft 29a of the electromagnetic solenoid 29 can be performed by the electromagnetic cylinder lock 35 attached to the box body 1, but it can be operated by an appropriate external operation switch or the like. You may do it.

[0039]

The present invention has the following effects.

(A) According to the invention of claim 1, with the shaft of the electromagnetic solenoid in the locked state, the main body of the electromagnetic solenoid resists the biasing force of the spring in the same direction as the expansion and contraction of the shaft of the electromagnetic solenoid. Since it is slidable, the drawer that has been opened at the time of locking can be easily closed, and all drawers can be locked automatically even after the drawer is closed.

(B) According to the invention of claim 2, when a power failure or a failure of an electric device occurs in an electrically locked state, a key operation of another cylinder lock provided at a proper position of the box body is performed. With this, it is possible to unlock all drawers at the same time with excellent operability, and there is no need to provide a lock or a mechanism linked to the lock for each drawer, and the structure of the entire device is simplified,
An inexpensive device can be provided.

[0042]

[Brief description of drawings]

FIG. 1 is a perspective view showing a document storage cabinet to which the present invention is applied.

FIG. 2 is a side view showing the cabinet in which the locking / unlocking device is in an unlocked state.

FIG. 3 is a side view showing the cabinet from which the drawer is pulled out in a state where the locking / unlocking device is unlocked.

FIG. 4 is a side view showing the cabinet in which the locking / unlocking device is in a locked state.

5 (a), 5 (b) and 5 (c) respectively show A-
FIG. 3 is a sectional view taken along line A, a sectional view taken along line BB of FIG. 2, and a sectional view taken along line CC of FIG.

FIG. 6 is an enlarged plan view of a main part of the cabinet of FIG.

FIG. 7 is a side view showing the locking / unlocking device of the cabinet in the state of FIG.

FIG. 8 is a side view showing the locking / unlocking device of the cabinet in the state of FIG.

FIG. 9 is an enlarged perspective view of a main part of the locking / unlocking device.

FIG. 10 is a side view showing the locking / unlocking device when the drawer is closed in the locked state.

[Explanation of symbols]

 1 Box 1a Upper plate 2 Drawer 3 Guide rail 4 Traveling rail 5 Protrusion 6 Elevating rod 7 Catch 8 Grasping tool 8a Locking piece 9 Fitting tool 9a Fitting part 9b Mounting part 10 Support plate 11 Guide tool 12 Board 13 Push-up protrusion 14 Depressing projection 14a Rear end surface (stopper surface) 15 Inclined groove 16 Engagement hole 17 Swing plate 17a Tip part 17b Rear plate 17c Upper side 18 Hook 19 Support tool 20 Long hole 21 Automatic locking device 22 Base plate 22a Lower piece 23 Projecting piece 24 Shaft 25 Notch 26 Rotating Link 27 Bolt 28 Mounting Plate 28a Lower Plate 29 Electromagnetic Solenoid 29a Shaft 30 Horizontal Plate 31 Connecting Plate 32 Shaft 33, 33 'Regulation Member 34 Energizing Spring 35 Electromagnetic Cylinder Lock 35a Keyhole 36 Mounting Bolt 50 Length Hole 51 Mounting bolt 52 Auxiliary spring 54, 54 'Manual cylinder lock 55 Sliding contact rod

Claims (2)

[Claims] 1. A plurality of drawers are vertically mounted in a multi-tiered manner in a box body, and an elevating rod is attached to an inner side surface of the box body so as to be vertically movable, and the elevating rod is provided between the elevating rod and each of the drawers. In a locking / unlocking device for a multi-stage drawer cabinet provided with an engaging / disengaging means capable of simultaneously locking / unlocking all drawers by vertical movement, an electromagnetic solenoid that is linked with the lifting rod to move the lifting rod up and down is provided. It is mounted on the inner surface of the box so that it can slide in the same direction as the electromagnetic solenoid, and a spring with a weaker biasing force than the shaft holding force of the electromagnetic solenoid is biased in the direction in which the shaft of the electromagnetic solenoid moves when locked. A locking / unlocking device in a multi-stage drawer cabinet characterized by being provided between boxes. 2. A multi-stage drawer cabinet according to claim 1, wherein another cylinder lock that can be moved up and down by a key operation and that is manually or electrically operated is provided at an appropriate position of the box body. Locking / unlocking device.