JP2586142Y2 - 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 locking device that can be suitably used for drawers and doors of office file cabinets and the like, and more particularly to a mechanically operated locking device using a card key.

[0002]

2. Description of the Related Art Conventionally, a lock mechanism for locking a drawer in a storage position is provided in a file cabinet or the like having a drawer, and a similar lock mechanism for locking a door in a closed position is provided in a library having a door. Have been. This type of locking mechanism generally has a latch member that is interlocked with a puller attached to a drawer or a front plate of a door, and when the puller is pulled, the latch member is provided with a locking projection or a locking mechanism provided on the cabinet body. By releasing from the hole, that is, unlocking, the drawer and the door can be opened and moved. Such a lock mechanism is further provided with a locking device for preventing unlocking, and by operating the locking device, the operation of the pull tab or the latch member can be restricted. A locking device of this type generally uses a cylinder lock of a type in which a key is inserted and rotated.

[0003] On the other hand, a device using a card key is being used as a locking device such as a door in a room. This type of card key type locking device generally reads magnetic information or optical information recorded on the surface of a card key. In addition, a lock mechanism such as a door is released by driving an actuator such as a solenoid.

[0004]

Since the cylinder lock type locking device described above needs to secure a relatively large dimension in the body length direction of the cylinder lock itself, it is incorporated in a front plate of a drawer, a cabinet door, or the like. This limits the drawer storage space. In addition, if a cylinder lock type locking device is incorporated in the cabinet body in a cabinet having a plurality of drawers, it is possible to prevent the restriction on the storage space of each drawer, but it is possible to lock or unlock each drawer individually. There is a disadvantage that it disappears.

On the other hand, since the above-mentioned card key type locking device needs to energize 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, there is a drawback that an electric / electronic circuit, an actuator, a power supply circuit, and the like are required, so that the device becomes very expensive, and the cost is increased due to power consumption.

Accordingly, an object of the present invention is to provide a card key type locking device which is compact, reliable and inexpensive.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention identifies a specific card key having an engagement groove formed at a predetermined position, and enables a lock and unlock operation by the card key. A card guide having a card insertion groove for receiving a leading end of a card key inserted from the insertion slot in a locking device body having a card key insertion slot between a lock position and an unlock position. Slidably in a direction parallel to the plane of the card key and perpendicular to the insertion direction of the card key, and faces the engagement groove of the card key when a specific card key is inserted into the card insertion groove. An identification hole is formed through the card guide so that the locking hole is aligned with the identification hole when the card guide is in the lock position and the unlock position, respectively. A discriminating body is formed in the discriminating hole and can be inserted into the engaging groove of the specific card key so as to be able to advance and retreat to the card insertion groove and the regulating hole. And a spring for urging the regulating body toward the identification hole, and when the one end of the identification body is fitted into the engagement groove of the specific card key, the other end of the identification body regulates the identification hole. A locking device is provided at an opening end on the hole side.

[0008] Preferably, the identification body comprises a sphere that can be fitted into the engagement groove of the card key, and a rod that comes into contact with the sphere.

[0009]

In the locking device having the above structure, when the identification hole and one of the restriction holes are aligned and the card key is not inserted into the locking device main body, the identification body in the identification hole is restricted. One end of the identification body is in contact with the opposite inner wall surface of the card insertion groove by being pressed by a spring force through the body. At this time, since a part of the regulation body in the regulation hole has entered the identification hole, the movement of the card guide with respect to the locking device main body is regulated by the regulation body. Therefore, the card guide is stably held at the locked position or the unlocked position when the card key is not inserted.
Next, when a specific card key is inserted into the card insertion groove from the card insertion slot of the locking device main body, one end of the identification body in the identification hole is fitted into the engagement groove of the card key, Since the other end of the identification body is located at the opening end of the identification hole on the regulation hole side, the regulation of the movement of the card guide by the regulation body is released. Therefore, the card guide is movable from the locked position to the unlocked position or from the unlocked position to the locked position. During the movement of the card guide, the other end of the identification body is in sliding contact with the wall surface of the locking device main body, so that one end of the identification body is held in a state of being fitted into the engagement groove of the card key. Therefore, it is possible to prevent the card key from slipping out during the movement of the card guide. When the card guide moves from the position where the identification hole is aligned with the one restriction hole to the position where the identification hole is aligned with the other restriction hole, the other end of the identification body can enter into the other restriction hole. Can be pulled out. Then, when the card key is pulled out, a part of the regulating body in the regulating hole enters the identification hole, so that the movement of the card guide with respect to the locking device main body is regulated by the regulating body.

As described above, the locking device according to the present invention can switch between locking and unlocking by the card key only by mechanical operation. Moreover, the card guide is provided between the lock position and the unlock position so as to be slidable in a direction parallel to the plane of the card key and perpendicular to the card key insertion direction. There is no need to secure the moving stroke of the card guide. Therefore, the thickness can be reduced particularly in the card key insertion direction.

When the discriminator comprises a sphere which can be fitted into the engagement groove of the card key and a rod which comes into contact with the sphere, the discriminator can be smoothly inserted into and removed from the engagement groove of the card key, and the discrimination can be performed. It is possible to reliably control the movement of the card guide by the body.

[0012]

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

FIG. 1 is a perspective view of a locking device showing one embodiment of the present invention, FIG. 2 is an exploded perspective view of the locking device, and FIGS. 3 (a) to 3 (c) show the internal structure of the locking device and FIG. FIG. 4 is a perspective view showing an example in which the locking device is applied to a drawer lock mechanism of a cabinet.

Referring to these drawings, the locking device includes a locking device main body 1 having a card key insertion slot 2.
In this embodiment, the locking device main body 1 is configured such that an upper case 1a and a lower case 1b are overlapped and fastened with a screw 1c.

[0015] A card key insertion slot 2 is provided in the locking device main body 1.
A card guide 4 having a card insertion groove 5 for receiving a leading end portion of the card key 3 inserted from the card guide 3 is stored.
The card guide 4 is parallel to the plane of the card key 3 and between the first position, for example, the unlocked position shown in FIG. 3A and the second position, for example, the locked position shown in FIG. It is slidably held in a direction perpendicular to the insertion direction. In addition, which of the first position and the second position is set as the lock position can be arbitrarily selected.

In this embodiment, two concave engagement grooves 6 are formed on both sides of the card key 3, respectively. The positions where the engagement grooves 6 are formed differ depending on each card key 3. The card guide 4 has four identification holes 7 facing each of the four engagement grooves 6 formed in the card key 3 when a specific card key 3 is inserted into the card insertion groove 5 of the card guide 4. The locking device body 1 has two (eight in total) regulating holes 8 for each identification hole 7 aligned with each identification hole 7 when the card guide 4 is in the lock position and the unlock position, respectively. Are formed.

In each of the identification holes 7, an identification body 9 composed of a sphere 10 partially fittable in the engagement groove 6 and a rod 11 abutting on the sphere 10 is provided in the card insertion groove 5 and the restriction hole 8. It is provided so that it can advance and retreat. On the other hand, in each regulating hole 8, a rod-shaped regulating body 12 that can advance and retreat to the identification hole 7 and a spring 13 that urges the regulating body 12 toward the inside of the identification hole 7 are provided. When a part of the sphere 10 forming one end of the identification body 9 is fitted into the engagement groove 6 of the specific card key 3, a part of the rod 11 forming the other end of the identification body 9 becomes the identification hole 7.
(See FIG. 3 (b)). Each regulating hole 8 is opened on the outer wall surface of the locking device main body 1, and the identification body 9 and the regulating body 12 can be inserted into the identification hole 7 and the regulating hole 8 from outside the locking device main body 1. The locking device main body 1 is provided with covers 14 and 15 for closing the outer opening end of the restriction hole 8.

In the locking device having the above structure, as shown in FIG. 3 (a), when the card guide 4 is at the unlock position, for example, the identification hole 7 and one of the restriction holes 8 are aligned, and When the key 3 is not inserted into the locking device main body 1, the identification body 9 in the identification hole 7 is pressed by the force of the spring 13 via the regulating body 12, and the sphere 10 forming one end of the identification body 9 is moved. It is in contact with the opposed inner wall surface of the card insertion groove 5. At this time, a part of the regulating body 12 in the regulating hole 8 is
The movement of the card guide 4 with respect to the locking device main body 1 is restricted by the restricting body 12.
Therefore, when the card key 3 is not inserted, the card guide 4 is stably held at the unlock position.

Next, when a specific card key 3 is inserted into the card insertion groove 5 of the card guide 4 from the card insertion slot 2 of the locking device main body 1, as shown in FIG.
When a part of the sphere 10 forming one end of the identification body 9 in the inside is fitted into the engagement groove 6 of the card key 3, the end of the rod 11 forming the other end of the identification body 9 becomes the identification hole 7. The movement of the card guide 4 by the regulating body 9 is released. Therefore, the card guide 4 can be freely moved from the unlocked position to the locked position shown in FIG. During the movement of the card guide 4, the end of the rod 11, which is the other end of the identification body 9, is in sliding contact with the wall surface of the locking device main body 1. It is held in a state fitted in the engagement groove 6. Therefore, it is possible to prevent the card key 3 from coming out of the card insertion groove 5 while the card guide 4 is moving.

When the card guide 4 moves from the unlocked position to the locked position shown in FIG. 3C, the identification hole 7 is aligned with the other restriction hole 8, so that the rod 11 forming the other end of the identification body 9 is formed. Can enter the other regulating hole 8. Therefore, the card key 3 can be pulled out. When the card key 3 is pulled out, a part of the regulating body 12 in the regulating hole 8 enters the identification hole 7, so that the movement of the card guide 4 with respect to the locking device main body 1 is regulated by the regulating body 12.

FIG. 4 shows an example in which the locking device having the above configuration is applied to a drawer lock mechanism of a cabinet.
A latch member 22 is attached to the card guide 4 of the locking device provided on the front plate 21 of the drawer 20. Therefore, when the card guide 4 is moved from the locked position to the unlocked position or from the unlocked position to the locked position when the drawer 20 is stored in the cabinet body 22, the latch member 22 is interlocked with the card guide 4. Then, it moves from the position where it engages with the locking hole 24 formed in the cabinet body 23 to the position where it is disengaged or from the disengagement position to the engagement position.

Although the illustrated embodiment has been described above, the present invention is not limited to the above embodiment.
For example, as the engagement groove formed in the card key, if the identification body can be fitted to an intermediate position in the thickness of the card key, other than the above-mentioned concave or bottomed shape, a through hole may be used. There may be. Further, the number and positions of the engagement grooves formed in the card key can be arbitrarily determined as necessary.

Further, the discriminating body may be a rod alone. In this case, if one end of the disc is engaged with the engaging groove of the card key and is formed as a columnar rod having a hemispherical shape, the disc can be engaged with the engaging groove of the card key. The fitting can be smoothly performed as in the above embodiment. Further, the spring for urging the regulating body may be an elastic body such as a leaf spring or rubber. In addition, the locking device according to the present invention can be used to pull out the file cabinet,
It can be installed in any place that requires locking, such as cabinet doors, room doors, etc.

[0024]

As is clear from the above description, the locking device according to the present invention can switch between locking and unlocking by a card key only by mechanical operation. In particular, the card guide is provided between the lock position and the unlock position so as to be slidable in a direction parallel to the plane of the card key and perpendicular to the card key insertion direction, so that the card guide is inserted in the card key insertion direction. It is not necessary to secure the moving stroke of the vehicle. Therefore, it is possible to provide a highly reliable and inexpensive card key type locking device which can be made thinner particularly in the card key insertion direction.

[Brief description of the drawings]

FIG. 1 is a perspective view of a locking device and a card key showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the locking device shown in FIG.

3 (a), 3 (b) and 3 (c) are sectional views showing the internal structure and operation of the locking device shown in FIG. 1, respectively.

FIG. 4 is a perspective view showing an example in which the locking device shown in FIG. 1 is provided in a drawer of a file cabinet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking device main body 2 Card key insertion slot 3 Card key 4 Card guide 5 Card insertion groove 6 Engagement groove 7 Identification hole 8 Restriction hole 9 Identification body 10 Sphere 11 Rod 12 Regulation body 13 Spring

Claims (2)

(57) [Scope of request for utility model registration] 1. A locking device for identifying a specific card key having an engagement groove formed at a predetermined position and enabling locking and unlocking operations by the card key, wherein the locking device has a card key insertion slot. The card guide having a card insertion groove for receiving the tip of the card key inserted from the insertion slot into the main body is parallel to the plane of the card key between the locked position and the unlocked position and in the card key insertion direction. The card guide is slidably provided in a direction perpendicular to the card guide, and an identification hole is formed through the card guide so as to face the engagement groove of the card key when the specific card key is inserted into the card insertion groove. A regulating hole is formed in the locking device main body so as to be aligned with the identification hole when in the lock position and the unlock position, respectively, and is fitted into an engagement groove of a specific card key in the identification hole. A possible identification body is provided so as to be able to advance and retreat with respect to the card insertion groove and the regulation hole, and a regulation body which can advance and retreat to the identification hole and a spring which urges the regulation body toward the identification hole are provided in the regulation hole. Wherein the other end of the identification body is located at the opening end of the identification hole on the regulation hole side when one end of the identification body is fitted into the engagement groove of the specific card key. . 2. The locking device according to claim 1, wherein the identification body comprises a sphere that can be fitted into the engagement groove of the card key, and a rod that comes into contact with the sphere.