JPS5856295Y2 - Locks for information processing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lock for information processing equipment that outputs a specific code signal depending on the key used with the lock function.

Generally, information processing devices such as accounting machines are configured so that a plurality of keys can be used for one lock, and each key can generate a unique code signal.

Conventional keys are provided with a key code part with a specific shape as a key and an operator code part for generating a unique code signal.The key code part and operator code part are formed with unevenness. There are mechanical keys and electronic keys that have permanent magnets embedded in the key code section and operator code section.

As mentioned above, each of these keys requires the same number of keys as the number of operators for one lock, and generally about 64 keys, and because they must be manufactured in large numbers, electronic keys are more popular than simple mechanical keys. Since a permanent magnet is embedded and a code is generated depending on the presence or absence of the permanent magnet, the total number of parts of the key is very large, resulting in high cost.

On the other hand, for conventional locks, (A) locks for mechanical keys in which the key code part and operator code part are shifted from each other in the longitudinal direction of the key have a longer key length. The disadvantage was that it became larger.

In addition, (B) a lock for a key in which the key code section and the operator code section are provided in positions facing each other on both sides of the key has no space for installing a microswitch in the position facing the operator code section, so the operator code section Since the microswitch is opened and closed using a lever, the structure of the lock becomes complicated and the lock becomes large.

Further, (C) the lock for the electronic key is provided with a magnetically sensitive element at a position opposite to the operator code section, so the characteristics of the magnetically sensitive element require adjacent spacing, resulting in a large key.

Furthermore, the permanent magnet of the key may damage the stored contents of the magnetic medium (credit card or commuter pass), and there is a drawback that care must be taken when storing the key.

As mentioned above, the shortcomings of conventional locks for information processing equipment, which have multiple keys for one lock as a set, are summarized as follows: (A) Both the key and the lock are large and unsuitable for mounting on the equipment (B) The key has a small and simple shape, but the lock structure is complex and large.
Assembly and adjustment takes time and costs are high.

(C) Although the structure of the lock is simple, if a large number of keys have to be manufactured for one lock, the number of parts will be large and the cost will be high.

Also, the permanent magnet of the key affects the magnetic medium.

Therefore, the present invention eliminates the drawbacks of the prior art and uses a mechanical key, but simplifies and downsizes the structure of the lock, and will be described in detail below with reference to embodiments.

FIG. 1 is a perspective view showing an embodiment of the information processing equipment side lock according to the present invention, and also shows a perspective view of the key to be used.

In the figure, 1 is a housing, 2 is a reset plate spring whose one end is fixed with screws 3a and 3b of the housing 1, 4 is a cylinder part of a cylinder lock, and 5 is a plurality of magnetic sensing elements 6 and necessary electrical parts. 7 is a key having a key code section 7a and an operator code section 7b.

Note that Figure 2 is a sectional view taken along line AA' in Figure 1.
It shows the state rotated 0° clockwise.

In the same figure, a permanent magnet 9 is embedded asymmetrically with respect to a protrusion 8a, and an operator code portion 7b of a key 7 is shown at 8.
This operation piece has a protrusion 8a that engages with the protrusion and a protrusion 8b that engages with the other end of the reset plate spring 2, and has a symmetrical shape with respect to the protrusion 8a.

Further, FIG. 3 is a partially detailed exploded perspective view of FIG. 2.

Further, FIG. 4 is a diagram showing the arrangement relationship between the plurality of operation pieces shown in FIG. 1 and permanent magnets.

Next, the operation of the information processing equipment side lock according to the above configuration will be explained.

First, the key 7 is inserted into the cylinder portion 4 of the cylinder lock.

When the relationship between the key code section 7a and the pin in the cylinder section 4 matches a predetermined value, the cylinder section 4 can be rotated.

Therefore, the cylinder part 4 can be rotated by the key 7 to unlock it, and since the key 7 also turns together with the cylinder part 4, the operation piece 8 slides against the biasing force of the plate h2.

This sliding of the operation piece 8 causes the permanent magnet 9 to face the magnetically sensitive element 6 .

Therefore, the magnetically sensitive element 6 operates and the operation piece can be output.

As described above in detail, according to the information processing equipment side lock according to the present invention, the operation of the operation piece corresponding to the operator code section is simple, there is little loss, and the structure is simple, and the operation is simple. As is clear from the structure of the present invention, it is possible to obtain a small, inexpensive, and highly reliable lock that is easy to manufacture, in which magnetically sensitive elements can be disposed in at least half or less of a lock that uses an electronic key.

It is clear that it is possible to use a key that has a small, simple structure, a small number of parts, and does not affect the magnetic medium.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the information processing equipment side lock according to the present invention, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, and Fig. 3 is a partially detailed exploded view of Fig. 2. The perspective view of FIG. 4 is a diagram showing the relationship between the plurality of operation pieces of FIG. 1 and a permanent magnet. 1...Housing, 2...Reset plate, 3a and 3b...Screws, 4...
... Cylinder part, 5 ... Printed circuit board, 6.
...Magnetic sensing element, 7...Key, 7a...
...Key code section, 7b...Operator code section, 8...Operation piece, 8a and 8b...Protrusion, 9...Permanent magnet.

Claims (1)

[Scope of utility model registration request] A lock for information processing equipment that can be opened by a key having a key code portion and an operator code portion formed with unevenness, the cylinder portion having a plurality of pins, a permanent magnet at a predetermined position, and engaging with the operator code portion of the key, A lock for information processing equipment comprising an operation piece that moves with the rotation of a key, and a magnetically sensitive element whose permanent magnets face each other and operate when the operation piece slides.