JPH0732797Y2 - Key information reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key information reading device mounted on a lock device for crime prevention.

{Prior Art} There are two types of lock devices, an electric type that unlocks by a key provided with key information of a predetermined format, and a mechanical type that operates a tumbler of a cylinder by a key mountain formed on the key. There are some.

Among them, an electric type locking device is, for example, SAIkai Sho 61-9196.
The one disclosed in Japanese Patent Publication No. 3 is known.

This lock device adds key information of a predetermined format by punching to the key, while the lock device side is provided with a key information reading device, and the control device of this key information reading device has the key information unique to the key. Is stored in advance, and based on the key information and the stored information when the key is inserted into the lock device, the lock device is configured to be unlocked when both information match, for example, For collective housing such as condominiums, for total security of the entire collective housing,
In many cases, the above-described electric lock is provided on the door of each house, and an electric lock that is unlocked by sharing the key of the electric lock is provided on the common entrance door of the apartment house.

However, the above-mentioned key information reading device is very expensive, and the electric lock equipped with this key information reading device has a price difference of 10 to 15 times compared with the mechanical type locking device, and this expensive There was a problem in that the initial cost would be enormous to equip all apartments with electric locks.

Therefore, an electric lock device which can solve the above-mentioned inconvenience has been proposed by Japanese Patent Laid-Open No. 64-71977.

This locking device is a key for locking / unlocking a so-called mechanical locking device, that is, a key having a plurality of cutout recesses formed on the edge thereof. The cutout recesses of this key are unique to the key. A key information reading device used for information is provided.

A concrete structure of this key information reader is shown in FIG. 8 and FIG.
Shown in the figure. In these figures, 43 in the figures is a signal detection case, which is a key for locking and unlocking a mechanical locking device.
41 and a key hole 44 for inserting and removing.

Notch recesses 42a to 42e are formed at the edge of the key portion inserted into the key hole 44.

Then, in the signal detection case 43, the notch recess 42
a to 42e as key information specific to the key, in order to read this, light emitting elements 45a and 45b formed of light emitting diodes, and light receiving elements 48a to 48f formed of phototransistors optically connected to optical fibers 47a to 47f. Is provided, and in order to sequentially detect the insertion position of the key 41 into the key hole 44 and generate a timing signal, the light emitting elements 46a to 46f made of light emitting diodes and the optical fibers 49a to 49f are optically provided. Light receiving elements 50a to 50f formed of connected phototransistors are provided.

According to this key information reading device, when the tip of the key 41 first blocks the light of the light emitting element 46a with the insertion of the key 41 into the key hole 44, the output signal of the light receiving element 50a causes a control device (not shown). , And at this time, the light of the light emitting element 45a is in a state of passing through the cutout recess 42a, so that the electric signals of the light receiving elements 48a to 48c correspond to the depth of the cutout recess 42a. It is input to the control device.

Next, insert the key 41 further so that the tip of the key 41 is the light emitting element 46.
When the light of b is blocked, the output signal of the light receiving element 50b is input to the control device. At this time, since the light of the light emitting element 45b is in a state of passing through the cutout recess 42b, each electric signal of the light receiving elements 48d to 48f is input to the control device corresponding to the depth of the cutout recess 42b. To be done.

Thus, as the tip of the key 41 sequentially passes through the generation elements 46a to 46f for generating the timing signal, the light emitting element
The information of the cutout recesses at the positions of 45a, 45b, 47a to 47f and the information of the key ridges are read and sequentially input to the control device as these electric signals. The control device compares the stored information peculiar to the key stored in advance by the control device, and the lock device is unlocked when both the information match.

Therefore, for example, in an apartment house, the door of each house is equipped with an inexpensive mechanical locking device, and only the common entrance door is equipped with an expensive locking device equipped with the above key information reading device. , If you store the information of the door key of each house in the control device, you can unlock the front door by sharing the key of the mechanical lock device equipped in each house,
It is possible to take a total security posture of an apartment house at a very low initial cost.

{Problems to be solved by the invention} By the way, in the above key information reading device, the key 41 has a key hole.
When the tip of the key 41 is inserted into 44 and sequentially blocks the light of the light emitting elements 46a to 46f, the information of the key crests corresponding to the positions of the light emitting elements 45a and 45b is sequentially detected.

Therefore, when the speed of inserting the key 41 into the key hole 44 is too fast, the detection of the key information by the cutout recesses 42a to 42e becomes inaccurate, and the unlocking is impossible even though it is the correct key. There was a risk of becoming.

Further, when the key 41 is reciprocally moved in the key hole 44, there is a problem that an erroneous signal is input.

In view of such circumstances, the present invention provides the latter key information reading device suitable for taking a total security posture of an apartment house, that is, a key notch concave portion of a key in a mechanical lock device. For the key information reader used for
It is intended to solve the problems of the key information reading device.

{Problems to be solved by the device} That is, the key information reading device according to the first device is provided with a key hole for inserting a key having a notched concave portion at an edge thereof in a signal detection case. In this signal detection case, key detection means for detecting an insertion completion state at a predetermined position of the key with respect to the key hole and outputting an electric signal, and this information as key information unique to the cutout recess key is used as the predetermined key of the key. And a key information detecting means for outputting an electric signal when it is detected when the insertion is completed, and the key information is compared with the previously stored unique stored information, and when the information matches, The feature is that a control device for unlocking the locking device is provided.

In the key information reading device according to the second invention, a key hole for inserting a key having a notched concave portion at the edge is formed in the signal detecting case, and the key hole for the key hole is formed in the signal detecting case. When a key detecting means for detecting an insertion completion state of a key at a predetermined position and outputting an electric signal, and the cutout concave portion as key information unique to the key, when this information is detected under the predetermined insertion completion of the key A key information detecting means for outputting an electric signal is provided on the key, while a through hole or a second notch recess is formed in the key, and the through hole or the second notch recess is used as cross-sectional shape information unique to the key. , Cross-sectional shape information detecting means for detecting this information when a predetermined insertion of the key is completed and outputting an electric signal, and comparing the cross-sectional shape information with the key information and previously stored stored information peculiar to the key do it, It is characterized in that provided a control device for unlocking the lock device when these information are matched.

The key detecting means, the key information detecting means, and the cross-sectional shape information detecting means are, for example, light emitting elements such as visible light, infrared light, and laser light, and phototransistors that operate by receiving these lights. However, the key detecting means may be constituted by a limit switch.

Further, as the key position detection target by the key detecting means, for example, the tip end portion or the base end portion of the key can be arbitrarily selected, and the key information unique to the key is the cutout concave portion itself or the gap between the cutout concave portions. You can choose any of the key mountains,
The cross-sectional shape information peculiar to the key is obtained by the through hole or the notched recess formed in the key.

{Operation} According to the key information reading device according to the first invention, when the key detecting means detects the completion of the insertion of the key into the key hole at the predetermined position, the key information reading device is based on the notch concave portion. The key information is detected by the key information detecting means, and this key information and the stored information peculiar to the key stored in advance are compared by the control means, and when the two pieces of information match, the locking device is unlocked.

According to the key information reading device of the second invention, when the key detecting means detects the completion of the key insertion at the predetermined position with respect to the key hole, the key information based on the notch concave portion is synchronized with this. Detected by the key information detection means,
The cross-sectional shape information based on the through hole or the second cutout recess is detected by the cross-sectional shape information detecting means, and the cross-sectional shape information, the key information and the prestored key-specific information are compared by the control means. Then, the lock device is unlocked when these pieces of information match.

That is, in any of the key information readers of the first and second inventions, it is detected whether or not the key is inserted in the predetermined position of the key hole, and the key is inserted in the predetermined position of the key hole. When this is detected, the information is compared for the first time, regardless of the key insertion speed into the key hole, and even if the key reciprocates within the key hole, it is always You can read the key information accurately,
Improved reliability is achieved.

{Embodiment} A first embodiment of a key information reader according to the present invention is shown in FIGS.
Description will be made with reference to FIG.

In FIGS. 1 to 3, reference numeral 1 in the drawings denotes a key, and a cutout recess 2a having three different depths for forming a key mountain is formed at the edge of the key portion inserted into the key hole. 2e is formed.

A signal detection case 3 has a key hole 4 formed over substantially the entire length thereof. A light passage hole 5 and light passage holes 6a to 6e are formed on one side wall of the signal detection case 3 so as to communicate with the key hole 4. ing.

The light passage hole 5 in this state is in a state in which the key portion having the cutout recesses 2a to 2e is completely inserted into a predetermined position of the key hole 4, that is, the key insertion into the predetermined position with respect to the key hole 4 is completed. In the state, the light passage holes 6a to 6e are formed at positions overlapping with the tip of the key 1, and at positions where the light passing holes 6a to 6e overlap with the cutout recesses 2a to 2e of the key 1 when the key insertion is completed at the predetermined position. ing.

Reference numeral 7 is a light emitting element formed of a light emitting diode arranged in the light passage hole 5, 9 is an optical fiber provided on the other side wall of the signal detection case 3 facing the light emitting element 7, and the optical fiber 9 is composed of a phototransistor. The light receiving element 10 is optically connected to form a key detecting means for detecting the completion state of the key insertion into the key hole 4 at a predetermined position and outputting an electric signal.

Reference numerals 8a to 8e are light emitting elements each including a light emitting diode arranged in each of the light passage holes 6a to 6e, and 11a to 11e are light emitting elements 8a to 8e.
Opposite to each of the above, for example, a set of three optical fibers is provided on the other side wall of the signal detection case 3 as a set, and these are separated by a slight distance in the height direction of the cutout recesses 2a to 2e. It is arranged.

Then, the light receiving elements 12a, 12b, 12c to 16a, 16 formed of phototransistors are respectively included in these assembled optical fibers 11a to 11e.
b and 16c are optically connected to each other, and when the key insertion into the key hole 4 at a predetermined position is completed, the notch recess 2a is formed.
~ 2e can be detected.

That is, the cutout recesses 2a to 2e are used as key information unique to the key, and a key information detecting means for outputting an electric signal when this information is detected when the predetermined insertion of the key 1 is completed is configured. The output signals generated by the key information detecting means and the key detecting means are input to a control device (not shown).

In this embodiment, each of the assembled optical fibers 11a to 11e is set to 3
The reason why the optical fibers of one set are configured as one set is to detect the depth of each of the cutout recesses 2a to 2e having three different depths. If there are six stages, six optical fibers are set as one set.

Further, the notch recesses 2a to 2e are provided only on one end edge of the key 1, but these may be provided separately on both end edges of the key 1, and correspondingly, the light emitting element and the light receiving element are optically provided. Place the optical fiber connected to.

Further, as shown in FIG. 3, light is made to enter each of the three assembled optical fibers 11a by one light emitting element 8a, but light is made incident respectively to each of the assembled optical fibers 11a. As described above, it is possible to implement by disposing three light emitting elements.

To read the key information by the key information reading device configured as described above, the key 1 is inserted into the key hole 4 of the signal detection case 3, and the key portion having the cutout recesses 2a to 2e is formed in the predetermined key hole 4. It is performed when the key 1 is completely inserted into the position, that is, when the key detecting means detects the completion of insertion of the key 1 into the predetermined position. , Key 1 notch recess 2a
2e are overlapped with the light emitting elements 8a to 8e.

Thus, in the cutout recess 2a, as shown in FIG. 3, the three optical fibers 11a from the light emitting element 8a corresponding to the depth thereof are formed.
Light is incident on all of the three light receiving elements 12a to 12c
An analog electric signal is output from the two light receiving elements 13a and 13b in the cutout recess 2b, and the remaining cutouts 2c to 2e receive light corresponding to the respective depths. Analog electric signals are output from the elements 14a, 15a to 15c, 16a, 16b and are input to the control device.

Then, the control device converts the analog signal into a digital signal, compares the key information peculiar to the key based on the cutout recesses 2a to 2e, and the stored information peculiar to the key stored in advance, and both the information are When they match, a signal for unlocking the lock device is output.

Therefore, for example, by inputting key information about a plurality of keys of the lock device provided on the door of each dwelling unit of the housing complex into the control device in advance, those keys can be shared and unique keys for each key can be obtained. The lock device can be operated based on the information.

It should be noted that the signal detection case 3 is provided at the rear end with a discharge hole for foreign matter that has entered the inside thereof, and when the light receiving element 10 of the key detection means receives an electric signal, the key information is detected with a slight time lag. If the key information is input to the control device from the means, even if a solid substance or the like is packed in the key hole 4 due to mischief, erroneous key information is generated due to the solid substance. It is possible to prevent output situations.

That is, in the conventional key information reading device of the latter configuration described above, when a solid substance or the like is filled in the key hole 44 by mischief, the solid substance moves the key tip together with the key 41. Then, the solid matter is sequentially detected by the light of the light emitting elements 46a to 46f, and at that time, the light emitting elements 45a and 45b.
There is a risk that the key information due to the notched concave portion at the wrong position opposite to that may be input to the control device, and an erroneous signal may be output from the control device. The output problem of the false signal is surely prevented.

In FIGS. 4 to 7 showing the second embodiment, 1 in FIG.
Is a key, and at the end edge of the key portion that is inserted into the key hole, the notch concave portion for forming the key peak has three different depths.
2a to 2e are formed. Reference numeral 21 is a key detection target member protruding in a stepped manner from the base end portion of the key 1, and 32 is a contact portion.

Reference numeral 22 is a concave groove formed on the side surface of the key 1, 23 and 23 are through-holes formed in the key 1, and the position and number of the through-holes 23 and 23 are the cross-sectional shape information unique to the key.

Therefore, when the position and the number of the concave grooves 22 are different, the position and the number of the through holes 23 are correspondingly changed to obtain the information that can specify the sectional shape peculiar to the key.

Reference numeral 3 is a signal detection case, and a key hole 4 is formed over substantially the entire length thereof. The key hole 4 allows the insertion of the key 1 having a different cross-sectional shape, so that the convex portion corresponding to the concave groove 22 is formed. It is formed in a rectangular shape without providing.

The signal detection case 3 is provided with cutout recesses 2a to 2e.
The light passing hole 6a that overlaps with each of the cutout recesses 2a to 2e in a state in which the key portion formed with the key is inserted into a predetermined position of the key hole 4.
˜6e, a light passage hole 24 overlapping the key detection target member 21, and light passage holes (see FIG. 6) 25a to 25d for reading the position and number of the through holes 23, 23 are formed. There is.

There are two through-holes 23, 23, but four light-passing holes 2
5a to 25d are formed to detect other key through holes at positions different from the through holes 23, 23 of the key 1 shown in FIG. 4 or different numbers of through holes. This is to make it possible.

Reference numeral 26 is a light emitting element formed of a light emitting diode disposed in the light passage hole 24, 28 is an optical fiber provided in the signal detecting case 3 facing the light emitting element 26, and a light receiving element 29 formed of a phototransistor in the optical fiber 28. Is optically connected to form a key detecting means for detecting a completion state of key insertion into a predetermined position with respect to the key hole 4 and outputting an electric signal.

27a to 27d are light emitting elements formed of light emitting diodes arranged in the light passage holes 25a to 25d, and 30a to 30d are optical fibers provided in the signal detection case 3 facing the light emitting elements 27a to 27d. To 30d are optically connected to the light receiving elements 31a to 31d formed of hot transistors, and the through holes 23, 23
The position and the number of are used as the sectional shape information peculiar to the key, and the sectional shape information detecting means for detecting this information when the predetermined insertion of the key 1 is completed and outputting an electric signal is configured.

Reference numerals 8a to 8e are light emitting elements each including a light emitting diode arranged in each of the light passage holes 6a to 6e, and 11a to 11e are light emitting elements 8a to 8e.
Opposite to each of the above, for example, a set of three optical fibers provided in the signal detection case 3 as a set, and these are arranged at a slight interval in the height direction of the cutout recesses 2a to 2e. There is.

Then, in each of these optical fibers 11a to 11e, a light receiving element (not shown because it is clear with reference to FIG. 2) 12a, 12b, 12c to 16a, 1 each consisting of a phototransistor is provided.
6b and 16c are optically connected to each other, and when the key insertion into the key hole 4 at a predetermined position is completed, the notch recess 2a is formed.
~ 2e can be detected.

That is, the cutout recesses 2a to 2e are used as key information unique to the key, and a key information detecting means for outputting an electric signal when this information is detected when the predetermined insertion of the key 1 is completed is configured. The output signals generated from the key information detecting means, the key detecting means and the sectional shape information detecting means are input to the control device.

To read the key information by the key information reading device configured as described above, the key 1 is inserted into the key hole 4 of the signal detection case 3, and the key portion having the cutout recesses 2a to 2e is formed in the predetermined key hole 4. This is performed when the key detection target member 21 blocks the light from the light emitting element 26 and the key detection means detects the insertion completion state of the key 1 at the predetermined position. Since the input of the electric signal to the control device for reading the key information by the cutout recesses 2a to 2e is the same as that in the first embodiment, the description thereof will be omitted.

On the other hand, in the state in which the insertion of the key 1 into the key hole 4 at the predetermined position is completed, the through holes 23, 23 overlap the light emitting elements 27b, 27d, and those lights are incident on the optical fibers 30b, 30d. Then, analog electric signals are input to the control device from the light receiving elements 31b and 31d.

Then, the control device, peculiar key information based on the cutout recesses 2a to 2e, cross-sectional shape information peculiar to the key based on the through holes 23, 23, and stored information peculiar to the key stored in advance in association with these Is compared with each other and a signal for unlocking the lock device is output when these pieces of information match.

Therefore, for example, by inputting the key information and the cross-sectional shape information inspection for the plurality of keys of the lock device provided on the door of each dwelling unit of the housing complex into the control device in advance, the keys can be shared and The lock device can be operated based on the information peculiar to each key. At this time, since the cross-sectional shapes of the keys 1 are different from each other, as shown in FIG. Although each of the keys 4 is rectangular, each key 1 can be accurately read from the cross-sectional shape information, and the situation in which an unlock signal is output by a key having different cross-sectional shape information can be prevented without error.

Of course, even if a solid substance has entered the inside of the signal detecting case 3, the key information detecting means does not operate unless the key detecting means detects the completion of the insertion of the key 1 into the key hole 4 at a predetermined position. The situation in which an erroneous signal is output due to the intrusion of solid matter is reliably prevented.

It should be noted that the number of through-holes 23 serving as the cross-sectional shape information of the key 1 is arbitrary, and the through-holes 23 can be parallel to the notched recesses with respect to the edge of the key. It is called the second notch recess, but the reading is
This is similar to the key information detecting means.

{Effect of the device} As described above, according to the key information reading device of the first device, the key information based on the notch concave portion is first stored in advance when the key is inserted into a predetermined position of the key hole. The stored information is compared with the stored information, and the lock device is unlocked when the two pieces of information match, without being influenced by the insertion speed of the key into the key hole and in the key hole. Even if the key reciprocates, the key information can always be accurately read, and a highly reliable key information reading device can be obtained.

Further, in the key information reading device according to the second invention, the cross-sectional shape information of the key is further compared, and when the cross-sectional shape information, the key information and the stored information match, the lock device is unlocked. It is possible to obtain a key information reading device that is locked and can be implemented for more types of keys with higher reliability.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention, in which FIG. 1 is a front view of a key, FIG. 2 is a perspective view of a signal detection case with a partial cross section, and FIG. It is an expanded sectional view of the signal detection case. 4 to 7 show a second embodiment, FIG. 4 is a front view of a key, FIG. 5 is a perspective view of a signal detecting case with a part thereof cut away, and FIG. 6 is a side view of the signal detecting case. FIG. 7 is an enlarged cross-sectional view of a signal detection case with a key inserted. 8 and 9 show a conventional example, FIG. 8 is a front view of a key, and FIG. 9 is a perspective view of a signal detection case. 1 ... key, 2a to 2e ... notched recess, 3 ... signal detection case, 4 ... key hole, 23 ... through hole, 7,10, (26,29)
... Key detection means (8a-8e), (12a, 12b, 12c-16a, 1
6b, 16c) ... Key information detection means (27a to 27d), (31a)
~ 31d) …… Section shape information detection means.

Claims (2)

[Scope of utility model registration request] 1. A signal detection case is formed with a key hole for inserting a key having a notched concave portion at an edge thereof, and the signal detection case is provided with a completion state of insertion of the key into a predetermined position with respect to the key hole. Key detecting means for detecting and outputting an electric signal, and key information detecting means for outputting the electric signal when the notch concave portion is used as key information peculiar to the key and this information is detected when the predetermined insertion of the key is completed. And a control device for comparing the above-mentioned key information with previously stored stored information peculiar to the key and unlocking the lock device when the information matches. Key information reader. 2. A signal detection case is formed with a key hole for inserting a key having a notched concave portion at an edge thereof, and the signal detection case is provided with a state of completion of insertion of the key into a predetermined position with respect to the key hole. Key detecting means for detecting and outputting an electric signal, and key information detecting means for outputting the electric signal when the notch concave portion is used as key information peculiar to the key and this information is detected when the predetermined insertion of the key is completed. While the key is provided, a through hole or a second notch recess is formed in the key, and the through hole or the second notch recess is used as the cross-sectional shape information unique to the key, and this information is inserted in the predetermined insertion of the key. When cross-sectional shape information detecting means for detecting under completion and outputting an electric signal is provided, and this cross-sectional shape information is compared with the key information and the stored information peculiar to the key stored in advance, when the information matches Lock device Key information reading apparatus characterized by comprising providing a control device for unlocking.