JPH0440363Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a card lock device, and more specifically, the movable plug is made movable by inserting and removing a card, thereby causing the lock lever release transmission shaft to perform the lock release operation. The present invention relates to a card lock device that can be provided with a card lock device.

[Prior Art] Conventionally, this type of card lock device has a movable plug inserted into the main body under spring pressure so as to be able to slide, and a plurality of pin insertion holes in the main body card insertion hole, respectively. A pin consisting of a plurality of pin elements is formed by forming a plurality of communicating pin holes, and is inserted into the pin holes and the pin insertion hole by applying spring pressure, and the protruding pattern of the pin allows the pin to be inserted into the card insertion hole. Only when a holed card is inserted, the movable plug becomes movable because it is separated in line with the shear line between the main body and the movable plug, and the lock lever release transmission shaft can be operated to release the lock. It is known that it has been set up. In this card lock device, two types of pins are inserted through the pin insertion hole of the movable plug and the pin of the main body, and by inserting one blank card into the card insertion hole, the height of the pin head can be increased. It was set in two ways.

[Problem to be solved by the invention] However, according to such a conventional card lock device, the number of cards is one and there are two types of pins, so if the number of pins is 9, then 2 ⁹ = 512
You can only get the number of different keys on the street. Therefore, if you try to make a large number of different keys, you will have to increase the number of pins accordingly, resulting in problems such as an increase in the size of the entire key and an increase in cost.

The present invention was developed in view of these problems with conventional card locks, and allows the height of the pin head to be set in three or more ways, allowing for a large number of different keys to be obtained with a small number of pins. The purpose is to provide a card lock device that can

[Means for Solving the Problems] Therefore, the card lock device of the present invention has pin insertion holes 12 for the movable plug 5, which is inserted into the main body 1 by applying spring pressure so as to be able to slide into the main body. and a plurality of pin holes 13 communicating with the card insertion holes 3 of the main body, respectively, and a pin consisting of a plurality of pin elements inserted into the pin holes and the pin insertion hole with spring pressure, Due to the protruding pattern of the pin, only when a perforated card is inserted into the card insertion hole, the movable plug is made movable by being separated in line with the shear line a between the main body and the movable plug, and the lock lever is released. In a card lock device in which a power transmission shaft 7 is provided to enable unlocking operation, when the number of cards is n (however, n is an integer of 2 or more), the number of cards is n+1 depending on the thickness of the card. Pin holes are formed to have different depths, and the pins are
When the card is not inserted into the card insertion hole, the displacement of the abutting ends b of the pin elements with respect to the shear line is determined by n+1 in correspondence to the n+1 types of depths of the pin holes provided in the card. By setting the type, n+1
Its characteristic is that it is a kind.

[Function] When a regular card is inserted into the card insertion hole, multiple types of pins inserted into the pin insertion hole with spring pressure are inserted according to the protrusion pattern of the pins.
Separate it in line with the shear line between the main body and the movable plug. As a result, the movable plug becomes movable, and by inserting a pin or the like through the insertion hole in the side wall of the case and pushing it in against the elastic force of the spring, the engagement with the transmission shaft is released, and the transmission The shaft is moved toward the lock lever and rotates the lock lever at its upper end to unlock the shaft.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 9.

FIG. 9 is a front view showing an example of how the card lock device of the present invention is installed. The main body 1 of the card lock device is attached to the door 23, and a card 19 can be taken in and taken out from the bottom of the main body 1.

As shown in FIGS. 1 and 2, a main body 1 is fixed to the lower part of a case 2 formed on a box. A card insertion hole 3 having an opening 3a at the lower end is formed in the main body 1, and a movable plug insertion hole 4 is provided in a direction perpendicular to the card insertion hole 3 (in the width direction of the main body). A plate-shaped movable plug 5 is inserted into the movable plug insertion hole 4 so as to be slidable in the width direction of the main body.

A transmission shaft for releasing the lock lever is installed inside the case 2 on the right end side of the movable plug 5. Left end of movable plug 5 and side wall 2 of case 2
A compression spring 6 is interposed between the movable plug 5 and the movable plug 5, so that the movable plug 5 is elastically biased toward the transmission shaft and brought into abutment with the lower inner side surface of the transmission shaft 7.

The lower end of the transmission shaft 7 and the bottom wall 2 of the case 2
A compression spring 8 is interposed between it and b. As a result, the transmission shaft 7 is elastically biased upward, and a locking piece 7a protruding inward from the lower end of the transmission shaft 7 is releasably locked to the lower surface of the right end of the movable plug 5. Further, the transmission shaft 7 is installed inside a vertically elongated hole 9 provided in the main body 2 so as to be slidable in the vertical direction.
As will be described later, by being pushed up by the elastic force of the compression spring 8, its upper end comes into contact with a lock lever 10 that is pivotally supported within the case 2, and the lock lever releases a lock (not shown). It is designed to be rotatable. The movable plug 5 is released from the transmission shaft 7 against the elastic force of the compression spring 6 by inserting a pin or the like into the insertion hole 11 formed in the side wall 2c of the case 2. It is movable in the direction shown in FIG. 1 (leftward in FIG. 1).

The movable plug 5 has a plurality of pin insertion holes 12...
is penetrated in the thickness direction of the plate. Further, the main body 1 is provided with a plurality of pin holes 13 opening into the card insertion hole 3 so as to correspond to the plurality of pin insertion holes 12 . As a result, pins 15 made up of a plurality of pin elements are inserted into the pin insertion holes 12 . . . and the pin holes 13 . . . so as to be slidable in the length direction. A compression spring 14 is installed between the lower end of the pin and the bottom of the pin hole 13, and the pin is resiliently biased by the compression spring and is held protruding within the card insertion hole 3. There is. next,
The details of the pin 15 will be explained based on FIGS. 3 to 8.

The pin 15 is the first pin 16 and the sixth pin shown in FIG.
There are three types of pins, a second pin 17 shown in FIGS. 7 and 7, and a third pin 18 shown in FIG. On the other hand,
The perforated card 19 is formed into two pieces, a lower card 19a and an upper card 19b.

The three types of pins 16 to 18 each have three pin elements 1, as shown in FIGS. 5 to 8.
6a, 16b, 16c, 17a, 17b, 17
c, 18a, 18b, and 18c are formed by abutting each other in the axial direction. Proximal pin element 16
A, 17a, 18a are formed with spring receivers, and the compression springs 14 are accommodated in these spaces.
The length l of the intermediate pin elements 16b, 17b, and 18b is made equal to the plate thickness L of the movable plug 5. Pin elements 16c, 17c, 18c at the tip
Tapered surfaces 16d, 17d, 1 are provided at the tips of the
8d, and when two stacked cards, the lower card 19a and the upper card 19b, are inserted into the card insertion hole 3, the pins 16 to 18 are pressed against the elastic force of the compression springs 14... Hole 13... is configured to be pushed down into the hole.

The pin has pin elements 16c, 17c,
They are classified into three types by varying the length of 18c. In this embodiment, pins 16 to 1
8 is formed and classified as follows.
That is, the pin element 16 at the tip of the No. 1 pin 16
The length l' of c is equal to the dimension L' from the air line a of the main body 1 and the movable plug 5 to the inner surface 3b of the side wall of the card insertion hole 3, and the card 19 is not inserted into the card insertion hole 3. For pin 16
The abutting ends b of b and 16c are set in advance to coincide with the shear line a.
Length of pin element 17c at the tip of No. 2 pin 17
l'' is made shorter than the dimension L' by the thickness c of one card.The length l of the pin element 18c at the tip of the No. 3 pin 18 is shorter than the dimension L' by the thickness of two cards. As a result, when the second pin 17 and the third pin 18 are not inserted with the card 19, the abutting ends b of the pin elements 17b, 17c and pin elements 18b, 18c are shortened by the main body. 1, and is set so as not to coincide with the shear line a.

Figure 4 shows the arrangement of these three types of pins, with the 1st pin 16, the 2nd pin 1
The 7th and 3rd pins 18 are indicated by numbers 1, 2, and 3, respectively. In this embodiment, a total of nine pins, three of each type, are arranged at appropriate intervals.

FIG. 3 shows card 19. The lower card 19a is formed with three pin holes 20 and 21 corresponding to the first pin 16 and the second pin 17, respectively, and the upper card 19b is formed with three pin holes 20 and 21 corresponding to the first pin 16 and the second pin 17, respectively.
Three pin holes 22 corresponding to the number pins 16 are formed.

Next, the movable plug 5 and three types of pins 16, 1
The relationship between 7 and 18 and the card 19 will be explained.

FIG. 5 shows the relationship between the first pin 16 and the card 19. As shown on the left side of the figure, only when pin holes are provided in both the lower card 19a and the upper card 19b, the tip end pin element 16c is inserted into the pin hole 22, and the intermediate and tip pin elements 16b, The abutting end b of 16c coincides with the shear line a, and the movable plug becomes movable. On the other hand, as shown on the right side of the same figure, when the lower card 19a and the upper card 19b do not have pin holes, the butt end b does not match the shear line b, so the movable plug 5 is attached to the pin 16b.
and 16c, making it impossible to move.

Figures 6 and 7 show pin 2 17 and card 19.
It shows the relationship between As shown on the left side of the figure,
Only when the pin hole 21 is provided in the lower card 19a, the abutting end b of the pin element 17b and the pin element 17c and the shear line a match, and the movable plug 5 becomes movable. On the other hand, as shown on the right side of the figure, there is a case where the card 19 is not inserted, and a case where the lower card 19a is inserted as shown on the right side of FIG.
And if the upper card 19b is not provided with a pin hole, the pin element 17b and the pin element 17c
Since the abutting end b does not match the shear line a, the movable plug 5 is hooked to the pin elements 17b and 17c and becomes immovable.

FIG. 8 shows the relationship between the third pin 18 and the card 19. As shown on the left side of the figure, only when both the lower card 19a and the upper card 19b do not have pin holes, the mutually abutting ends b of the pin elements 118b and 18c align with the shear line a and are movable. The plug 5 becomes movable. On the other hand, as shown on the right side of the figure, when the card 19 is not inserted, the movable plug 5 is hooked to the pin elements 18a and 18b and becomes immovable.

In this embodiment, three types of pins, ie, three pins each, number 1 pin 16, number 2 pin 17, and number 3 pin 18, are provided for a total of nine pins. Therefore, in this embodiment, the number of key differences can be obtained in 3 ⁹ =19683 ways. If there are 10 pins, 3 ¹⁰ = 59049
Of course, by increasing the number of pins, you can obtain more key differences, such as 3 ¹¹ = 177147 if you increase the number of pins to 11.
Further, in this embodiment, there are three types of pins and two cards, but it is of course possible to use four types of pins and three cards, or five types of pins and four cards. In this case, if the number of pins is m, the number of different keys can be increased to 4 ^m or 5 ^m .

Next, the operation of this embodiment will be explained based on FIGS. 1 and 2.

Cards 19 consisting of two cards, a lower card 19a and an upper card 19b, are inserted into the card insertion hole 3 in a stacked state. If the inserted card is a regular card, the abutting ends of the plurality of pin elements of the pin 15 coincide with the shear line a, and the movable plug 5 becomes movable. In this state, by inserting a pin or the like through the insertion port 11 of the main body 1, the movable plug 5 is moved by the elastic force of the compression spring 6 to the side opposite to the transmission shaft 7 (leftward in FIG. 1). . As a result, the movable plug 5 and the locking piece 7a are unlatched, and the transmission shaft is moved toward the lock lever (upward in FIG. 1) by the return force of the compression spring 8, and the upper end of the transmission shaft is moved toward the lock lever. Rotate to unlock.

[Effects of the invention] According to the invention described above, the following effects can be obtained.

Number of cards is n (however, n is an integer greater than or equal to 2)
In this case, pin holes are formed in the card to have n+1 different depths depending on the thickness of the card, and the pins are inserted into the card insertion hole when the card is not inserted. , the displacement of the abutting ends b of the pin elements with respect to the shear line is determined by n corresponding to the n+1 types of depths of the pin holes provided in the card.
By setting +1 type, there are n+1 types, so if the number of pins is m, the number of key differences can be at least (n+1) ^m or more, which is significantly more than the conventional method.

Since the lock can be unlocked by stacking two or more cards and using them at the same time, it is not possible to create the other card by looking at one card, and if the cards are stored separately, it is safe from theft. It is. Additionally, the user can memorize several cards by memorization number and use them in combination.
Furthermore, for example, as in the case of a safe deposit box, the user and the management company each have their own cards, and the lock can only be unlocked if both cards match.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing an embodiment of the card lock device according to the present invention, Fig. 2 is a longitudinal sectional side view of the same embodiment, and Fig. 3 A and B are each of the lower card and upper card in the embodiment. A plan view, FIG. 4 is a plan view showing an example of the arrangement of three types of pins in the same embodiment, and FIG.
The figure is an explanatory diagram of the No. 1 pin in the same embodiment, FIGS. 6 and 7 are explanatory diagrams of the No. 2 pin in the same embodiment, FIG. 8 is an explanatory diagram of the No. 3 pin in the same embodiment, and FIG. The figure is a front view showing an example of use of the same embodiment. 1... Main body, 3... Card insertion hole, 5... Movable plug, 7... Transmission shaft, 12... Pin insertion hole, 13, 20, 21, 22... Pin hole, 16...
...1st pin, 17...2nd pin, 18...3rd pin, 19a...lower card, 19b...upper card, a...shear line, b...butt ends of pins.

Claims (1)

[Scope of utility model registration request] Each pin insertion hole 12 of the movable plug 5 is inserted into the main body 1 by applying spring pressure so as to be able to slide into the main body.
and a plurality of pin holes 13 communicating with the card insertion holes 3 of the main body, respectively, and a pin consisting of a plurality of pin elements inserted into the pin holes and the pin insertion hole with spring pressure, Due to the protruding pattern of the pin, only when a perforated card is inserted into the card insertion hole, the movable plug is made movable by being separated in line with the shear line a between the main body and the movable plug, and the lock lever is released. In a card lock device in which a power transmission shaft 7 is provided to enable unlocking operation, when the number of cards is n (however, n is an integer of 2 or more),
Pin holes are formed in the card to have n+1 depths depending on the thickness of the card, and the pins are connected to the shear line when the card is not inserted into the card insertion hole. A card lock device characterized in that the displacements of the abutting ends b of the pin elements are set to n+1 types in correspondence with the n+1 types of depths of the pin holes provided in the card, thereby providing n+1 types of displacement.