JP4105288B2 - Card type lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a card-type lock that sets the unlock position of a tumbler pin with a setting card having a plurality of pin-corresponding holes and unlocks with a predetermined card key having a plurality of pin-corresponding holes, and in particular, with a master key. The present invention relates to a lockable card type lock.
[0002]
[Prior art]
Conventionally, a moving plate is movably accommodated in a casing, and a number of pin holes are provided in the thickness direction of the casing and the moving plate, and springs, tumbler pins, and balls are sequentially inserted into the pin holes, and the casing is moved into the casing. A card-type lock provided with an insertion slot for a setting card and an insertion slot for a card key has been proposed, for example, in Japanese Patent Laid-Open No. 53-146899.
[0003]
[Problems to be solved by the invention]
This card type lock is a pin corresponding to the unlocking position of the tumbler pin by setting the unlocking position of the tumbler pin by inserting a setting card having a pin-corresponding hole in a predetermined position into the insertion slot for the setting card. By inserting the card key with the corresponding hole into the insertion slot for the card key, the moving surface of the moving plate and the abutment surface of the tumbler pin (underpin and cord pin) are aligned to operate to unlock. To do.
[0004]
However, since this conventional card type lock is inserted into the pin hole so that two balls (steel balls) are arranged on each tumbler pin, the number of parts of the ball is increased, and a large number of balls are inserted into the pin holes. The inserting operation is also complicated, and there is a problem that man-hours increase.
[0005]
Therefore, the present inventors formed a setting card insertion slot and a card key insertion slot in the moving plate, accommodated one ball in the pin hole above each cord pin, Japanese Patent Application Laid-Open No. 9-291729 has proposed a card-type lock having a simple structure in which the inserted setting card is inserted between the code pin and the ball, thereby setting the position of the hole of the card key for unlocking.
[0006]
Since this card type lock has a small number of parts and can be manufactured easily, for example, this type of card type lock is used conveniently for doors and drawers of small items used in hospital rooms. A master key may be required for their management. However, this type of card-type lock uses a setting card to create an arbitrary unlock code, that is, to arbitrarily set the unlock position of the tumbler pin, so that all such card keys set There was a problem that it was difficult to make a master key that could unlock a card-type lock.
[0007]
The present invention has been made in view of the above points, and an object thereof is to provide a card-type lock that can be unlocked using a predetermined master key.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the card type lock of the present invention has a movable plate movably disposed in a casing, and a plurality of pin holes are provided in the thickness direction of the casing and the movable plate so as to communicate with each other. An under pin and a cord pin are slidably accommodated in the pin hole by a spring, a setting card insertion long hole and a card key insertion long hole are formed in the transverse direction of the pin hole, and the operation plate is connected to the moving plate. In the card-type lock, when the movable plate is pushed by the card key and moved, the actuating plate moves the latch of the latch mechanism to unlock it,
A master lock is attached to a part of the casing, and the master lock is a rectangular tube-shaped housing, a movable body that is inserted in the housing so as to be movable in the same direction as the moving plate, and has a key insertion long hole therein. and a under-pin and code pin slidably received is urged by a spring to communicatively a key insertion slot transversely drilled a pin hole of the moving body and the housing, master mobile An operating plate for locking is connected, and when the moving body is pushed and moved by a master key , the operating plate for master locking moves the latch of the latch mechanism to unlock.
[0009]
[Operation and effect of the invention]
When the card-type lock having such a configuration is used, first, a setting card provided with holes corresponding to some pin holes is inserted into the setting card insertion slot, and a card key for unlocking is set. The position of the hole of the set card key is different from the position of the hole of the setting card, the code pin in the position without the hole is pushed down by the setting card, and the contact surface of the code pin and the underpin is the unlocked position. Become.
[0010]
When unlocking, the set card key is inserted into the card key insertion slot. At this time, the ball passing through the hole of the setting card and the code pin are pushed down by the distance of the thickness of the card key, and the contact surface of the code pin and the underpin is in the unlocked position, so that it does not pass through the hole of the setting card. The ball above the depressed code pin enters the hole of the card key, and the code pin remains in the unlocked position. When a predetermined card key is inserted, the unlocked state is established, and the moving plate is pushed and moved by the card key as it is, and the latch mechanism connected to the moving plate is unlocked.
[0011]
When unlocking using the master key, when the master key is inserted into the key insertion slot of the master lock, the recess provided on the surface of the master key pushes the code pin into the predetermined position at the predetermined position. Match the boundary with the underpin to the boundary surface of the moving object.
[0012]
As a result, the master lock is in an unlocked state, and when the movable body is further pushed by holding the master key, the movable body is moved, and the latch mechanism is operated via the operation plate for the master lock by the movement of the movable body. It will be unlocked. Thus, when necessary for management, the card-type lock can be opened using the master lock. Since the master lock can be formed in a small size and can be attached to a part of the casing of the card-type lock, a lock that can be used for the master key can be realized without increasing the size of the card-type lock. Further, if the master lock is structured to be detachably inserted and fitted into a square hole formed in the casing, the master lock can be easily replaced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 shows a front view of a card-type lock setting card K1 and a card key C inserted therein, FIG. 2 shows a rear view with a cross section, and FIG. 3 shows a plan view with the cross section. A rectangular parallelepiped casing 1 is inserted into the casing 1 so that the movable plate 2 is slidable by a predetermined distance in the horizontal direction. At the tip of the moving plate 2 (lower end in FIG. 3), the connecting portion 3 is provided through the bottom of the casing 1, and the operation plate 4 having a triangular tip is fixed to the connecting portion 3.
[0014]
In the casing 1, a large number of pin holes 5 for tumbler pins, positioning holes 6 for positioning the moving plate 2, and large-diameter pin holes 7 are formed at predetermined positions in the thickness direction. The movable plate 2 is also provided with a pin hole 8 penetrating in the thickness direction at a position where it can communicate with each of the pin holes 5, and a large diameter pin at a position where it can communicate with the large diameter pin hole 7. A hole 9 is drilled.
[0015]
Inside the moving plate 2, a setting card insertion slot 10 for setting card insertion is formed as a slit-like hole. The setting card insertion slot 10 is formed with an opening on two sides so that a card can be inserted from both the left and right sides of the lock, and an opening is also formed on the casing on the same side. Further, a card key insertion slot 11 for inserting a card key is formed as a slit-shaped hole in the moving plate 2 between the casing 1 and the casing 1. The card key insertion slot 11 is formed with an opening on the front side of the lock.
[0016]
A coil spring 12 is inserted into each pin hole 5 provided in the casing 1, and an underpin 15 is inserted from above. A coil spring 13 is inserted into the positioning hole 6, and a positioning ball 16 is inserted from above. Further, a coil spring 14 is inserted into the large-diameter pin hole 7, and a large-diameter underpin 17 is inserted from above.
[0017]
Further, a cord pin 18 having the same length is inserted into each pin hole 8 provided in the moving plate 2, and a large-diameter code pin 19 is inserted into the large-diameter pin hole 9. When the tumbler pin is formed from the underpin 15 and the cord pin 18 and the contact surface of the underpin 15 and the cord pin 18 coincides with the boundary surface M between the movable plate 2 and the casing 1, the unlocked state is established. The large-diameter underpin 17 and the large-diameter cord pin 19 constitute a tumbler pin for locking, and lock the movement of the moving plate 2 in a state where the setting card is not inserted.
[0018]
Further, a ball (steel ball) 20 is inserted on the cord pin 18 in each pin hole 8. The diameter of the ball 20 is set to be approximately the same as the thickness of the upper part from the insertion slot 10 of the moving plate 2. The positioning ball 16 is inserted into a shallow recess provided at a predetermined position on the lower surface of the moving plate 2 to position the moving plate 16. The code pin 19 inserted into the large-diameter pin hole 9 pushes the inserted setting card K1 or K2 upward and locks the movement of the moving plate 16 when the card is not inserted.
[0019]
The card key C is formed in a shape that can be inserted into the card key insertion slot 11, and a plurality of unlocking holes are formed at positions corresponding to the predetermined pin holes 8. These holes are formed so as to be symmetrical with respect to the longitudinal center line of the card, and pin holes 5 and 8 are formed on one half of the center line of the lock body, so that the card key C is reversible, that is, It can be inserted no matter which side is up.
[0020]
The setting card K1 is of a type that is inserted from the side of the casing, and the setting card K2 is of a type that is inserted from the back side of the casing, and a plurality of holes are formed at positions corresponding to the predetermined pin holes 8, respectively. The The positions of the holes formed in the setting cards K1 and K2 determine the unlocking code, that is, the position of the hole of the unlocking card key C, and the positions of the holes of the unlocking card key C are the setting card K1, It is formed at a position corresponding to the pin hole 8 that is not drilled on K2. That is, the positions of the holes of the setting cards K1 and K2 do not coincide with the positions of the holes of the card key C. The card key C and the setting cards K1, K2 are set to the same thickness.
[0021]
Further, a master lock 30 is disposed rearward in the lower left portion of the casing 1 when viewed from the front. As shown in FIG. 8, the master lock 30 is formed in an elongated prismatic shape having substantially the same length (depth) as the casing 1, and is inserted and attached to a square hole formed in the lower left portion in the casing 1. The square hole portion is formed so as to penetrate from the front side of the casing 1 to the back side. As shown in FIGS. 6 to 9, the master lock 30 includes a handing 31 formed in a rectangular tube shape, a moving body 34 that is inserted into the housing 31 and can be moved back and forth by a predetermined distance, and the top and bottom of the housing 31. It is provided with covers 32 and 33 to be fitted.
[0022]
As shown in FIG. 6, four pin holes 37 are formed side by side in the upper and lower portions of the front side of the housing 31, and each pin hole 37 penetrates to the inside of the rectangular tube-shaped housing. Locking portions 31 a for locking the covers 32 and 33 are formed on both side surfaces of the housing 31. Locking claws 32a and 33a are provided on both sides of the covers 32 and 33. When the master lock 30 is inserted into the square hole in the casing 1, the inner side of the lower cover 32 is provided inside the cover 32 and 33a. A locking convex portion 32b locked to the concave portion is provided to protrude downward with spring elasticity.
[0023]
The moving body 34 is formed in a prismatic shape that can be inserted into the housing 31, and a key insertion long hole 36 is formed in the axial direction inside, and the moving body 34 is formed at a position corresponding to the pin hole 37 at the upper and lower portions on the front side. A pin hole 41 is formed. These pin holes 41 are formed with a stepped portion so as to insert the code pin 39 at a predetermined position, and communicate with the key insertion long hole 36. A connecting portion 35 protrudes from the end of the moving body 34 so as to penetrate the housing 31 and the bottom of the casing 1.
[0024]
The positions of the upper pin holes 37 and 41 and the lower pin holes 37 and 41 are slightly shifted from each other to the left and right sides, and the master key MK can be used reversibly, that is, both sides can be used. That is, the upper and lower surfaces of the key can be used by forming four concave portions corresponding to the length of the tumbler pins inserted into the upper and lower pin holes 37 and 41 on both surfaces of the master key MK.
[0025]
When assembling such a master lock 30, as shown in FIG. 6, the moving body 34 is inserted into a fixed position in the housing 31 and the pin holes 37 and 41 are aligned with each other. Are respectively inserted from the upper and lower pin holes 37, and the coil spring 40 is further inserted into these holes. Then, the cover 33 is covered from above and the cover 32 is covered from below so as to cover the upper and lower sides of the housing 31, and the locking claws 33a and 32a provided on both sides thereof are locked to the locking portions 31a on the housing side. 33 and 32 are fitted (FIG. 7).
[0026]
The master lock 30 is now in the state shown in FIGS. 8 and 9, and the cord pins 39 having the respective lengths are in a state in which the tips protrude from the key insertion long holes 36 by the respective projecting lengths. The cord pins 39 and the under pins 38 are urged in the distal direction by the coil springs 40, and the under pins 38 are located across the boundary surface M, which is the boundary between the housing 31 and the moving body 34. Then, the moving body 34 cannot move and is locked.
[0027]
Such a master lock 30 is inserted into a square hole provided in the lower left portion of the casing 1, and the locking convex portion 32b is locked to the concave portion on the casing 1 side and attached to a predetermined position. It is also possible to remove the master lock 30 by releasing the locking by pressing the locking projection 32b. The connecting portion 35 provided at the end of the moving body 34 protrudes downward through the bottom of the housing 31 and the casing 1, and the operation plate 23 having a triangular tip is fixed to the lower surface of the connecting portion 35. The operation plate 23 is arranged in parallel with the operation plate 4 of the card type lock.
[0028]
Further, a latch mechanism 25 is provided in the attachment case 27 at the rear portion of the casing 1. The latch mechanism 25 is provided with a latch 26 having a triangular tip so as to protrude laterally into the mounting case 27 and be retractable. A spring 28 that protrudes and urges in a protruding direction is hooked between the latch 26 and the mounting case 27, and a pin 24 that contacts the tip inclined portion of the actuating plate 23, and the actuating plate 4 of the actuating plate 4. A pin 29 that comes into contact with the tip inclined portion is projected. The latch 26 usually has its tip projected laterally from the mounting case 27 by the spring force of the spring 28.
[0029]
The card-type lock having such a configuration is used, for example, as a locking device such as a door for a container or a drawer installed in a hospital room or the like, and on the fixed side or the moving side (wing side) facing the latch 26, A receiving member (not shown) is attached to a position where it engages with and locks the front end of the latch 26. At this time, the front side of the card-type lock, that is, the opening of the card key insertion slot 11 for inserting the card key is positioned at the front of the door or drawer, and the opening of the setting card insertion slot 10 is Certain sides and backs can be mounted inside the door or drawer.
[0030]
The setting card K1 or K2 and the card key C are usually manufactured from a synthetic resin or the like as one set. In the card-type lock in which the setting card and the card key are not inserted at all, the underpin 15 intersects the boundary surface M between the moving plate 2 and the casing 1, and the moving plate 2 cannot move.
[0031]
When using the lock, the user first inserts the setting card K1 or K2 into the setting card insertion slot 10. When the setting card K1 is used, it is inserted into the insertion slot 10 from the lateral direction, and when the setting card K2 is used, it is inserted into the insertion slot 10 from the rear. The insertion direction of the setting card can be arbitrarily selected according to the mounting state of the lock. When the setting card K2 is inserted, the setting card K2 enters between the code pin 18 and the ball 20 and sets the unlocking code, that is, the position of the hole of the unlocking card key.
[0032]
At this time, the cord pin 18 coinciding with the hole 22 on the setting card pushes the ball 20 upward, and the contact surface between the cord pin 18 and the underpin 15 does not coincide with the boundary surface M, and is in a locked state. Further, the plurality of code pins 18 and the large-diameter code pins 19 push up the setting card K1 at their tips to prevent rattling. At this time, the contact surface between the code pin 18 and the underpin 15 at a position that does not coincide with the hole 22 of the setting card coincides with the boundary surface M.
[0033]
When the card key C is inserted into the card key insertion slot 11 from the front side with the setting card K2 inserted, as shown in FIG. 4, the hole 20 without a hole and the cord pin 18 are slightly pushed down by the card key. The contact surface of the pin 18 and the underpin 15 coincides with the boundary surface M. Therefore, the movable plate 2 is now in a movable state, and the movable plate 2 is moved backward by pushing the card key C as it is. Along with the movement of the moving plate 2, the operating plate 4 moves so as to protrude rearward, and the movement moves the latch 26 in the left direction of FIG.
[0034]
At this time, since the card key C is pressed against the casing 1 by a large number of balls 20 and code pins 18, if the card key C is pulled back, there is a positioning action of the ball 16 in the positioning hole 6, and the moving plate can be easily moved. 2 can be returned to its original position. Thereafter, if the card key C is further pulled, the card key C is pulled out from the card key insertion slot 11 and is locked again.
[0035]
When the card key C is lost, when the master key is unlocked, the master key MK is inserted into the master lock 30 and unlocked. That is, when the master key MK is inserted into the key insertion slot 36 at the lower left of the front, the concave portions provided on the surface of the master key MK push the four upper and lower code pins 39 into the predetermined positions at the predetermined positions. The boundary between each code pin 39 and the under pin 38 is made to coincide with the boundary surface M of the outer surface of the moving body 34.
[0036]
As a result, the master lock 30 is unlocked, and when the movable body 34 is pushed with the master key MK, the movable body 34 moves to the back by a predetermined distance. Due to the movement of the moving plate 34, the operating plate 23 moves so as to protrude rearward, and the movement moves the latch 26 to the left in FIG. Thus, when necessary for management, the card lock can be opened using the master lock 30.
[0037]
The master lock 30 may be provided with a return spring for returning the movable body 34 to the locked position.
[Brief description of the drawings]
FIG. 1 is a front view of a card type lock showing an embodiment of the present invention.
FIG. 2 is a rear view with a cross section of the card type lock.
FIG. 3 is a plan view with a cross section of the card type lock.
4 is a cross-sectional view taken along the line IV-IV in FIG. 3;
5 is a cross-sectional view taken along VV in FIG.
6 is an exploded perspective view of the master lock 30. FIG.
7 is an exploded perspective view of the master lock 30. FIG.
8 is a perspective view of the master lock 30. FIG.
FIG. 9 is a cross-sectional view of a portion where the master lock 30 is mounted.
[Explanation of symbols]
1-casing 2-moving plate 3-connecting portion 4-acting plate 5, 8-pin hole 10-setting card insertion long hole 11-card key insertion long hole 15-under pin 18-code pin 20-ball 23-acting plate 25-latch mechanism 30-master lock 31-housing 34-moving body 35-connecting portion 36-key insertion long hole 37-pin hole 38-under pin 39-code pin

Claims (2)

A movable plate is movably disposed in the casing, and a plurality of pin holes are provided in the casing and the movable plate in the thickness direction so that the pin can communicate with each other. Underpins and cord pins are urged by springs to the pin holes. A set card insertion slot and a card key insertion slot are formed in the transverse direction of the pin hole, the operation plate is connected to the moving plate, and the moving plate is pushed and moved by the card key. When the card-type lock that unlocks the operating plate by moving the latch of the latch mechanism,
A master lock is mounted on a part of the casing, and the master lock is inserted into the housing so as to be movable in the same direction as the movable plate and provided with a key insertion slot in the housing. A movable body, an underpin and a cord pin that are slidably received by a spring in a pin hole that is communicated with the housing and the movable body and is formed in a transverse direction of the key insertion slot; With
The operation plate for the master lock is connected to the movable body, and when the movable body is pushed and moved by a master key , the actuation plate for the master lock moves the latch of the latch mechanism to unlock. Card-type lock. The card type lock according to claim 1, wherein the master lock is detachably inserted and fitted in a square hole formed in the casing.

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