JP3339707B2 - Cabinet locking mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabinet locking mechanism suitable for use in an office cabinet, and more particularly, to a cabinet locking mechanism using a card-type locking device.

[0002]

2. Description of the Related Art Conventionally, a file cabinet or the like having a drawer is provided with a latch mechanism for locking all drawers in a storage position. A general latch mechanism is attached to a front plate of a drawer or a door. A latch member that interlocks with the pull tab, and when the pull tab is pulled, the latch member detaches from the locking projection or the locking hole provided on the cabinet body, that is, releases the latch, so that the drawer and the door can be opened and moved. . In a cabinet or the like provided with such a latch mechanism, a locking device independent of the latch mechanism or combined with the latch mechanism is further incorporated. To directly lock the drawer in the storage position. As this kind of locking device, a device using a cylinder lock type in which a key is inserted into a cylinder lock and rotated is generally used.

On the other hand, a device using a card is being used as a locking device such as a door at the entrance of a room. Generally, this type of card-type locking device reads magnetic information or optical information recorded on the surface of a card. In addition, a lock mechanism such as a door is released by driving an actuator such as a solenoid.

[0004]

The above-mentioned locking device of the cylinder lock type requires that a key be inserted into the cylinder lock and turned, and therefore a locking device with a simpler key operation is demanded.

On the other hand, since the above-mentioned card type locking device needs to supply power to a reading circuit such as a magnet, the installation place is limited to a place where power can be supplied, and is not suitable for a file cabinet or the like. In addition, it requires an electric / electronic circuit, an actuator, a power supply circuit, and the like, so that it is very expensive, and furthermore has a drawback that the cost increases due to power consumption.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cabinet locking mechanism that is compact, reliable, inexpensive, and simple in key operation.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a drawer is housed so as to be able to be taken in and out from a front opening of a cabinet body, and can be brought into contact with a front end of a projection projecting from an outer surface of a side wall of the drawer. A locking rod provided with a suitable stopper is moved up and down by a locking or unlocking operation of a locking device provided on the front surface of the cabinet main body to lock and unlock the drawer. An operating member that moves in the front-rear direction by a card insertion / removal operation and switches between a locked position and an unlocked position, and the cabinet main body is provided with a swinging rod that can swing up and down at both ends. One end of the rod is brought into contact with the operating member and the other end is connected to the locking rod, and the locking rod is moved up and down in conjunction with the forward and backward movement of the operating member. And, wherein the swing center of the swing rod to form the distance is shortened position to the position of near one end that is contact with the actuating member than the distance to the other end position to be connected to the locking rod , Between the cabinet body,
A method of driving the swinging rod by pressing the swinging rod by the operating member
And a spring for urging the swinging rod in the same direction as the locking direction .

[0008]

In the cabinet locking mechanism having the above construction, the card is inserted into the locking device from the front side of the cabinet body, and the operating member is moved rearward by the pushing force of the card, whereby the rocking rod is rocked up and down. The drawer can be moved up and down to lock or unlock the drawer. In this case, since the swing center of the swing rod is formed at a position where the distance to the position where the swing rod is in contact with the operating member is shorter than the distance to the other end position connected to the locking rod, The other end of the swinging rod and the locking rod can be moved up and down greatly compared to the amount of vertical displacement of the one end of the swinging rod by the member, and the locking rod can be locked or unlocked with a small amount of card operation. Can be reliably performed. Ma
In addition, it swings between the cabinet body and the operating member.
The swinging rod is urged in the same direction as the direction in which the rod is pressed and driven.
Is provided, the card is pushed by the spring force.
Locking or locking by card operation.
Unlocking can be performed with a light force.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of a card-type locking device applied to a cabinet locking mechanism of the present invention. FIG. 1 is a perspective view of a card-type locking device and a card, and FIG. FIG. 3 is a perspective view of the card type locking device with a part of a storage case and an operating member removed, and FIG. 3 is an exploded perspective view of the card type locking device. 4 is a perspective view showing an assembled state of a card guide, a key groove detecting member and an unauthorized groove detecting member, FIG. 5 is an exploded perspective view thereof, and FIG. 6 is a longitudinal section of a main part of the card type locking device. FIG.

First, referring to FIGS. 1 to 3,
The card type locking device has a storage case 1, which is composed of an upper case 2, a lower case 3, and both cases 2, 3.
, A front plate 5 having a card insertion slot 5a formed thereon, and a decorative plate 6 attached to the front surface of the front plate 5. The cover 4 is provided with a mounting plate 7 protruding laterally.

An insertion portion 10a for receiving the leading end of the card 8 inserted from the card insertion slot 5a is provided in the storage case 1.
In this case, a card guide 10 is provided so as to be slidable in the insertion and removal direction of the card 8. The card guide 10 is slidable between a first position near the card insertion slot 5a and a second position separated from the card insertion slot 5a. In order to slidably guide the card guide 10, guide grooves 2 f are provided on both inner plates of the upper case 2 of the storage case 1 so as to extend in the insertion / removal direction of the card 8. The protruding projection 11 is slidably engaged via a sleeve 12 described later.

The card guide 10 is urged from a second position to a first position between a pair of hooks provided on the front plate 5 and a pair of hooks protruding from the bottom of the card guide 10. The return springs 13 are respectively stretched.

In FIG. 3, reference numeral 14 denotes the card guide 1.
Each time 0 moves back to the first position after it has advanced to the second position, the card guide 10 returns to the first position and locks to the third position between the first position and the second position. Are shown as a whole. Here, the operation control unit 14 is integrally provided on the bottom surface of the card guide 10, and has a substantially heart-shaped grooved cam 15 and a lever 17 pivotally attached to the inner bottom surface of the lower case 3 of the storage case 1 via the pivot 15.
And a neutral spring 18 for pulling the tip of the lever 16 from the front of the pivot 15. At the tip of the lever 16, an engaging element 19 for engaging with the groove cam 15 is provided.

When the engaging element 19 is located at the tip of the heart of the groove cam 15, the card guide 10 is at the first position, and the engaging element 19 is at the top end of the two heart-shaped peaks of the groove cam 15. When located, the card guide 10 is in the second position.
And the engagement element 19 is in the shape of the heart-shaped 2
When located at the bottom of the valley between the two peaks, the card guide 10 is in the third position.

The groove cam 15 is not symmetrical with respect to the front-rear direction, that is, the card insertion / removal direction, but has an obliquely distorted shape. Therefore, when the card guide 10 is pressed from the first position to the second position against the spring 13 and then released, the engaging element 19 moves from one peak of the groove cam 15 to the bottom of the groove cam 15. The card guide 10 is stopped at the third position because it is locked at the bottom of the valley. When the card guide 10 is pressed again from the third position toward the second position, the engaging element 19 is separated from the bottom of the cam groove 15 and rides over the other peak. 10 returns to the original first position.

Reference numeral 20 denotes an operating member that works with the card guide 10. The operating member 20 takes one of the locked position and the unlocked position when the card guide is in the first position, and the locked position when the card guide 10 is in the section from the second position to the third position. And the lock release position. The operating member 20 is provided on the left and right side surfaces of the upper case 2 and the card guide 10.
Left and right side wall portions 20a are inserted between the left and right side surface portions, and the sleeve 12 is fitted into a groove 21 formed at one end of the side wall portion 20a.
When the sleeve 12 is fitted into the groove 21, first, the protrusion 11 of the card guide 10 is moved from the opening of the groove 21 to the groove 21.
The sleeve 12 can be fitted in the groove 21 by inserting the sleeve 12 into the protrusion 11 and inserting the sleeve 12 into the protrusion 11. The operating member 20 has an inclined cam portion 20b at the other end of the side wall portion 20a.

Next, referring to FIG. 2, FIG. 4 and FIG.
Reference numeral 22 denotes a keyway detecting member. The key groove detecting member 22 is inserted into the card guide 10 when the card guide 10 is at the first position or the third position when the key groove is not formed at a predetermined position of the card 8 (see FIG. 1). The card guide 1 is engaged with the first engaging portion 23 or the second engaging portion 24 (FIG. 2) formed on the storage case 1 by riding on the flat portion of the card 8.
0 is locked in the first position or the third position, and when a key groove 8a (see FIG. 1) is formed at a predetermined position of the inserted card, the key case 8a is engaged with the key groove 8a to thereby store the card case. The card guide 10 is disengaged from the first engagement portion 23 or the second engagement portion 24, thereby unlocking the card guide 10 from the first position or the third position.

More specifically, the keyway detecting member 2
Reference numeral 2 denotes a pair of left and right arms 25, an end shaft 26 connecting one end of both arms 25, 25, an intermediate shaft 27 extending through an intermediate portion of both arms 25, 25, and other arms 25, 25. And a connecting piece 28 for connecting between the end portions. The end shaft 26 is rotatably engaged with a shaft support portion 29 provided on the card guide 10 so that one end portion of the key groove detecting member 22 is connected to the card guide 10. The guide 10 is swingably supported. A plurality of key groove detecting projections 30 which can be engaged with the key groove 8a at a predetermined position of the card 8 are formed on the intermediate shaft 27 on the other end side of the key groove detecting member 22 so as to protrude downward. 25,2
At the other end of 5, a locking projection 31 that can be engaged with the first engaging portion 23 and the second engaging portion 24 of the storage case 1 is formed to protrude upward. The card guide 10 has a spring 32 that urges the locking projection 31 of the keyway detecting member 22 in a direction (downward) to be detached from the first engaging portion 23 and the second engaging portion 24 of the storage case 1. Is provided. This spring 3
Reference numeral 2 denotes a central coil portion which is held by the card guide 10, and both ends of a spring extending from the coil portion bias the key groove detecting member 22 downward, and
Plays the role of suppressing left-right vibration. The key groove detecting projection 30 is provided on the card guide 10 in the card insertion portion 1.
An insertion hole 10b is formed for insertion into Oa.

Reference numeral 33 denotes a pair of left and right illegal groove detecting members. When an unauthorized groove is formed at a position other than the predetermined position of the card 8, the unauthorized groove detecting member 33 detects the card inserted into the card guide 10 when the card guide 10 is at the first position or the third position. 8 engages with the third engaging portion 34 or the fourth engaging portion 35 (FIG. 2) formed in the storage case 1, whereby the card guide 10 is moved to the first position. When the card 8 is locked at the third position or the third position, and no illegal groove is formed at a position other than the predetermined position of the inserted card 8, the third case or the fourth case of the storage case 1 From the engaging portions 34 and 35 of the card guide 10
From the first position or the third position.

More specifically, the fraudulent groove detecting member 33 has a middle portion pivotally supported on both ends 27a of the intermediate shaft 27 of the key groove detecting member 22, respectively.
At one end and the other end thereof, an unauthorized groove detecting projection 36 that can be engaged with an unauthorized groove of the card 8 and a locking projection 37 that can be engaged with the third and fourth engaging portions 33 and 34 of the storage case 1. Are formed. Further, the locking protrusion 37 of the unauthorized groove detecting member 22 has the third and fourth engaging portions 33 and 34 of the storage case 1.
Are biased by a spring 38 in a direction (upward) of engaging with the spring.

As shown in FIG. 1, in this embodiment, the same function as the return spring 13 is applied to the locking portion protruding from the upper surface of the operating member 20 and the hook provided on the cover 4 of the storage case 1. The spring 39 is stretched. As described above, since the springs for urging the card guide 10 and the operating member 20 are disposed on the upper and lower sides, the movement of the card guide 10 and the operating member 20 can be made smooth.

In this embodiment, the card guide 10
A ridge 10c that abuts the inner surface of the operating member 20 on the left and right sides of the upper case 2 to lightly press the operating member 20 against the inner surface of the upper case 2.
Is formed, the card guide 10 and the operating member 2
It has a structure in which left and right play are unlikely to occur at 0.

In the card-type locking device having the above structure,
When the regular card 8 is inserted into the card guide 10 from the card insertion slot 5a of the storage case 1, the key groove detecting projection 30 of the key groove detecting member 22 is formed at a predetermined position on the flat portion of the card 8. By engaging with the keyway 8a,
The key groove detecting member 22 unlocks the card guide 10 from the first position in the vicinity of the card insertion slot, and the illegal groove detecting protrusion 36 of the illegal groove detecting member 33 rides on the flat portion from the tip of the card 8, thereby making the illegal operation. The groove detecting member 33 also unlocks the card guide 10 from the first position near the card insertion slot. Therefore, the card guide 10 can be moved forward from the first position to the second position by the card pushing force. When the card guide 10 moves away from the first position, the key groove detecting member 22 and the unauthorized groove detecting member 33 are kept in the unlocked state by contact with the inner wall surface of the upper case 2 of the storage case 1. Therefore, by moving the card guide 10 forward from the first position to the second position together with the card 8, the operating member 20 can be moved from one of the locked position and the unlocked position to the other.

On the other hand, when an erroneous card or an improperly created card is inserted, the keyway detecting member 22
Alternatively, since at least one of the unauthorized groove detecting members 33 does not release the lock of the card guide 10 from the first position, locking or unlocking cannot be performed with these unauthorized cards or the like.

As described above, the card guide 10 is
When moving from the position to the second position, the engaging element 19 of the operation control unit 14 moves from the tip of the heart of the heart-shaped grooved cam 15 to one base. When the card 8 is pushed in until the card guide 10 reaches the second position and the pressing force is released, the card guide 10 is urged in the direction of the first position by the spring 13. The engagement element 19 moves to the bottom of the groove cam 15 between the two heart ridges and is locked at that position. Therefore, the card guide 10 is locked in the third position between the second position and the first position by the operation control unit 14, in which position the operating member 20 is in the same position as in the second position, that is, the locked position or It is kept in the unlocked position. On the other hand, when the card guide 10 is at the third position, the protrusions 31 and 37 of the key groove detecting member 22 and the unauthorized groove detecting member 33 are at positions where they can be engaged with the engaging portions 24 and 34 of the storage case 1. While the card-type locking device is kept in one of the locked and unlocked states, the card 8 is inserted into the card guide 10 and the storage case 1.
Can be extracted from

Next, after inserting the card 8 again and moving the card guide 10 from the third position to the second position, the card guide 10 is moved together with the card 8 from the second position to the first position. The engagement element 19 of the operation control unit 14 once moves from the bottom of the heart-shaped grooved cam 15 to the other heart ridge, and then moves from this heart ridge to the heart tip. Therefore, the card guide 10 returns to the first position without being locked at the third position, and the operating member 20 returns to the original locked or unlocked position. When the card 8 is removed, the card guide 10 is locked at the first position by the key groove detecting member 22 and the unauthorized groove detecting member 33.

As described above, the card-type locking device having the above configuration can switch between locking and unlocking by inserting and removing the card 8 only by mechanical operation. Next, a cabinet using the card-type locking device having the above configuration will be described. 7 to 9 show one embodiment of the cabinet 50. FIG. Referring to these figures, the cabinet is composed of a cabinet body 51 and a plurality of drawers 52 housed in the cabinet body 51 so as to be freely taken in and out.
And a locking mechanism 53 for locking all the drawers 52 at the storage positions in the cabinet body 51. The locking mechanism 53 can abut on the front ends of the projections 54 protruding from the outer surfaces of the left and right side walls of each drawer 52. A locking device having a pair of left and right locking rods 56 provided with stoppers 55, a card-type locking device having the above-described configuration indicated by reference numeral 40, and a pair of left and right swinging rods 57, provided on the front surface of the cabinet body 51. The locking and unlocking of the drawer 52 is performed by vertically moving the locking rods 56 via the swinging rods 57 by the locking or unlocking operation of the drawer 52.

More specifically, the swinging rod 57 has a V-shaped notch 59 which engages with a support member 58 fixed to the cabinet main body 51. Both ends can be swung up and down. One end of each of the swinging rods 57 is connected to the operating member 20 of the card-type locking device 40.
, And the other end is connected to a pair of left and right locking rods 56, respectively. As described above, the operating member 20 moves in the insertion / removal direction of the card 8, that is, in the front-rear direction together with the card guide 10. As a result, the pair of left and right locking rods 56 is vertically moved.

Notch 59 forming the center of swing of swinging rod 57
Is formed at a position where the distance to a position near one end where it abuts on the operating member 20 is shorter than the distance to the other end side position connected to the locking rod 56. Therefore, it is possible to increase the vertical displacement of the locking rod 56 connected to the other end of the swinging rod 57 as compared with the displacement of the swinging rod 57 that is in contact with the operating member 20 near one end. it can.

The swinging rod 57 is a long rod bent in a U-shape in cross section, and the notches 59 are formed at the lower ends of both side walls of the swinging rod 57. Since such a swinging rod 57 is light in weight but hardly bent, the operation of the locking device 40 can reliably move the locking rod 56 up and down by a required amount.

The support member 58 is formed with a projection 60 that is in contact with the upper surface of the swinging rod 57 immediately above the notch 59.
This serves to stably hold the swinging rod 57 while facilitating the assemblability of the swinging rod 57 to the engaging member 58. Therefore, even when the cabinet 50 is turned upside down to transport the cabinet 50 or the like, the swinging rod 57
Can be prevented from being detached from the engaging member 58.

A roller 61 is provided at one end of the swinging rod so as to be in contact with the operating member 20 so that the movement of the operating member 20 and the swinging rod 57 is smooth.

The cabinet body 51 is provided with a spring 62 for urging the swinging rod 57 in the same direction as the direction in which the operating member 20 pushes the swinging rod 57 (in the illustrated embodiment, the direction in which the swinging rod is pushed down). By the action of the spring 62, the card 8 and the operating member 20 can be operated with a light force.

Although the illustrated embodiment has been described above, the present invention is not limited to only the above embodiment.
Various changes can be made to the shape and the like of each component. For example, in the illustrated embodiment of the card-type locking device, five groove detecting projections 30 are used. However, by changing the position and the number thereof according to the key groove 8a of the card 8, a card corresponding to a large number of cards 8 is provided. A locking device can be provided. In the illustrated embodiment of the card-type locking device, an unauthorized groove detecting member 33 is provided on both sides of the key groove detecting member 22.
However, for example, a key groove detecting member can be divided and arranged on both sides of the unauthorized groove detecting member. Further, the card-type locking device according to the present invention can be attached to any place that requires locking, such as an opening / closing door or a room door, in addition to the above-mentioned drawer of the file cabinet.

[0034]

As is apparent from the above description, it is possible to provide a cabinet locking mechanism that is compact, highly reliable, inexpensive, and simple in key operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a card-type locking device applied to the present invention.

FIG. 2 is a perspective view showing a state where a cover and an operating member of the locking device shown in FIG. 1 are removed.

FIG. 3 is an exploded perspective view of the locking device shown in FIG.

FIG. 4 is a perspective view showing a state where the card guide, the key groove detecting member, and the unauthorized groove detecting member of the locking device shown in FIG. 1 are assembled.

FIG. 5 is an exploded perspective view of the card guide, the key groove detecting member, and the unauthorized groove detecting member shown in FIG.

FIG. 6 is a longitudinal sectional view of a main part of the locking device shown in FIG. 1;

FIG. 7 is a perspective view of the cabinet showing one embodiment of a cabinet locking mechanism according to the present invention using the locking device shown in FIG. 1;

FIG. 8 is a schematic sectional view of a main part of the cabinet shown in FIG. 7;

9 is a perspective view of a main part of a locking mechanism of the cabinet shown in FIG. 7;

FIG. 10 is a sectional view of a main part of a locking mechanism of the cabinet shown in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage case 5a Card insertion slot 8 Card 8a Keyway 10 Card guide 13 Return spring 14 Operation control unit 20 Working member 22 Keyway detecting member 23 First engaging part 24 Second engaging part 30 Keyway detecting protrusion 31 Locking projection 32 spring 33 illegal groove detecting member 34 third engaging part 35 fourth engaging part 36 illegal groove detecting projection 37 locking projection 38 spring 40 card type locking device 50 cabinet 51 cabinet body 52 drawer 53 locking mechanism 56 Locking rod 57 Swinging rod 58 Engagement member 59 Notch 60 Projection 61 Roller 62 Spring

Continuation of the front page (56) References JP-A-4-296419 (JP, A) JP-A-62-135756 (JP, A) JP-A-4-61806 (JP, A) Jpn. , U) Japanese Utility Model Sho 51-22517 (JP, U) Japanese Utility Model Hei 1-92485 (JP, U) Japanese Utility Model Hei 1-1112270 (JP, U) Japanese Utility Model Utility Model 1-159081 (JP, U) 31-5600 (JP, Y1) Jikken 47-5906 (JP, Y1)

Claims (1)

(57) [Claims] 1. A lock in which a drawer is housed so as to be able to be taken in and out from a front opening of a cabinet body, and a locking rod having a stopper which can abut on a front end of a projection projecting from an outer surface of a side wall of the drawer is provided on a front surface of the cabinet body. In a cabinet locking mechanism that locks and unlocks a drawer by moving the device up and down by locking or unlocking operation of the device, the locking device moves in the front-rear direction by a card insertion / removal operation, and the locking position is determined. An operating member that switches to an unlocked position, the cabinet body is provided with a swinging rod whose both ends can swing up and down, and one end of the swinging rod is brought into contact with the operating member and the other end is Is connected to the locking rod, and the locking rod is moved up and down in conjunction with the forward and backward movement of the operating member, and the swing center of the swinging rod is connected to the locking rod. Formed at a position where the distance to a position near one end that is in contact with the operating member is shorter than the distance to the other end position , between the cabinet body.
A method of driving the swinging rod by pressing the swinging rod by the operating member
A locking mechanism for a cabinet , comprising a spring for urging the swinging rod in the same direction as the direction .