JP2009155953A - Lock device and lock system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device and a lock system increased in security by adopting a mechanical locking/unlocking mechanism, so designed that reflected light is emitted from the inside of a lock, and having an optical function for authentication based on whether the reflected light is strong or weak. <P>SOLUTION: The lock comprises a key, a first light emitting element which illuminates the end of the key when the key is inserted into a plug, and a light receiving element which receives the reflected light reflected by the reflecting elements of the key. The key comprises a light guide installed in the longitudinal direction of a metal body, formed of one or more of reflecting elements attached to the light guide at proper positions, and allowing a part of the light directed to the light guide to be reflected by the reflecting elements and emitted from the end of the light guide. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lock key device and a lock key system that make it difficult to duplicate and unlock a key by optical means.

  In general, cylinder locks have a shear line as the mating surface of the plug fitted in the cylinder body, pin holes set according to the pitch from the reference surface of the key, and a pin and a pin attached to each pin hole. The plug is rotated and unlocked by inserting the screwdriver pin to be pressed and matching the pin inserted in each pin hole with the shear line according to the height of the key pile inserted from the key hole. Has been.

  However, in such a conventional cylinder lock, the pin hole is set to the pitch from the reference surface of the key, and is determined by the depth of the pin inserted into the pin hole. Can do. In addition, there is a drawback that it can be easily unlocked by a simple operation to insert the picking from the keyhole and adjust the height of the pin to the shear line.

  Therefore, various electronic locks have been proposed that improve security by preventing imitation of keys in place of such mechanical locks. These electronic locks are largely classified into electric, radio, and optical types. It has been separated. In the case of the electric type, a complicated electric circuit is required, and there is a problem that wear and continuity deteriorate when the number of uses increases. In the case of the radio wave type, there is a risk that the radio wave transmitted from the key is leaked and intercepted.

In the case of the optical type, for example, a key including an identifier made of a multilayer thin film having specific spectral characteristics, a reference member made of a multilayer thin film having the same spectral characteristics as the identifier, and the identifier and the reference member are irradiated. The identification light transmitted or reflected by the identifier and the reference light transmitted or reflected by the reference member are detected, and the identity between the spectral characteristic of the identifier and the spectral characteristic of the reference member is determined. There is something like that (see Patent Document 1).
JP 2006-97426 A

  In the case of the optical key system disclosed in Patent Document 1, an identifier made of a multilayer thin film is provided on the key itself, and the identity between the identifier and the spectral characteristic of the reference member is determined. A complicated optical path must be formed by many optical components such as a polarization separation mirror and a total reflection prism.

  Therefore, the structure is extremely complicated and the manufacturing cost is high, and the system is difficult to spread to general buildings. In addition, since the key is recognized based on the spectral characteristics of the multilayer thin film without using digital data, there is a problem that it is difficult to duplicate the key and it is difficult to deal with loss.

  The present invention is optical as well as mechanical, and can be used to authenticate a key with a simple configuration without forming a complicated optical path, thereby preventing malicious duplication of the key. It is an object of the present invention to provide a lock key device and a lock key system with improved performance.

  Therefore, the present invention solves the above problems by means described below. That is, the invention according to claim 1 is a lock key device in which a plug is rotatably fitted to a cylinder body, and a driver pin is matched with a key ring or dimple of a key to be locked and unlocked. A light guide part is provided in the longitudinal direction of the light guide, and one or a plurality of reflection elements are provided at appropriate positions of the light guide part, and a part of the light incident on the light guide part is reflected by the reflection element. And a light reflected from the first light emitting element that irradiates the tip of the key and the reflective element of the key when the key is inserted into the plug. The lock is provided with a light receiving element for receiving light.

  According to a second aspect of the present invention, in the lock device according to the first aspect, a light guide portion whose light emitting surface coincides with the keyhole surface is provided so as to surround the outer periphery of the lock, and the light guide portion is irradiated. A second light emitting element is provided to enable authentication display.

  According to a third aspect of the present invention, in the lock device according to the first aspect, the second light emitting element is provided in the vicinity of the keyhole surface so that authentication display is possible.

  According to a fourth aspect of the present invention, in the lock device according to the first aspect, an electric lock mechanism for restricting the rotation of the plug is provided.

  According to a fifth aspect of the present invention, in the lock device according to the first aspect, a detection sensor is provided for detecting when the key is inserted from the keyhole.

  According to a sixth aspect of the present invention, a light guide is formed in the longitudinal direction inside the metal main body, and one or a plurality of reflective elements are provided at appropriate positions of the light guide, and the light guide A part of the light incident on the light is reflected by the reflecting element and becomes a key to be emitted from the tip of the light guide.

  According to the seventh aspect of the present invention, when the key is inserted into the plug, the first light emitting element that irradiates the tip of the key, the light receiving element that receives the reflected light reflected by the reflecting element of the key, and the authentication display The lock is provided with a second light-emitting element that can be used, an electric lock mechanism that restricts the rotation of the plug, and a detection sensor that detects when the key is inserted through the keyhole. To.

  In the invention described in claim 8, a light guide is provided in the longitudinal direction inside the metal main body, and one or a plurality of reflective elements are provided at appropriate positions of the light guide. A key in which a part of incident light is reflected by the reflecting element and emitted from the tip of the light guide, and a first light emitting element that irradiates the tip of the key when the key is inserted into the plug And a light receiving element that receives the reflected light reflected by the reflecting element, a second light emitting element that enables authentication display, an electric lock mechanism that restricts rotation of the plug, and a key that is a keyhole The first light emitting element emits light based on the detection signal of the detection sensor that detects the insertion of the key, and is reflected by the reflective element. Value of the output signal from the light receiving element that received the reflected light When consistent with preset set value, as well as an authentication display to light emitting elements of the margin 2, so that the lock key system becomes possible unlocked by actuating the lock mechanism.

  According to the present invention, a mechanical locking / unlocking mechanism is adopted, reflected light is obtained from the inside of the key, and an optical function is provided that enables authentication by the strength of the reflected light. Therefore, it is possible to provide a lock key device and a lock key system that can obtain extremely high security.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 show an outline of the configuration of the present invention, and FIG. 3 shows an example of the key configuration of the present invention. FIG. 4 specifically explains the function of the present invention, and FIG. 5 specifically shows the configuration of the control unit of the present invention. FIG. 6 shows an implementation state of the present invention, and FIGS. 7 and 8 show the flow of processing of the present invention.

  As shown in FIG. 1, the main configuration of the present invention is to control a lock 1 incorporating an optical element, a key 20 in which a light guide path is formed, and the optical element and a locking mechanism. It comprises a control unit 30 for performing the recognition setting of the key 20.

  The basic structure of the mechanism related to the locking and unlocking of the lock 1 is the same as that of a general cylinder lock, and a plug 2 in which a key hole 2a into which a key 20 is inserted is formed, and a cylinder that rotatably holds the plug 2 The body 3 is mainly configured. An annular recess 2b communicating with the pin hole 3a is formed on the fitting surface of the plug 2 with the cylinder body 3, and the tip of the pin 4 pressed by a compression spring disposed in the pin hole 3a is formed in the annular recess 2b. I try to face it. Therefore, when the pin 4 is pushed up to the inserted key 20 by the key ring, the plug 2 can be rotated and unlocked.

  A substrate 5 is disposed on the back side of the plug 2 and the cylinder body 3, and a first light emitting element 6 and a light receiving element 7 are disposed in a recess 5 a of the substrate 5. In the mechanism element configured as described above, the light guide holder 8 is integrally provided so as to surround the outer periphery thereof, and the second light emitting element 9 is provided at the rear end portion of the light guide holder 8. Since the light-shielding layer 10 is formed on the outer periphery of the light guide portion, the light emitted from the second light-emitting element 9 is guided to the light guide holder 8 and emitted from the front end without leaking outside. As shown in FIG. 2, the light guide holder 8 may not be used, and the light emitted from the second light emitting element 9 may be directly emitted to the outside. Moreover, when light emission display is performed by the light guide holder 8, the light emitting surface can be caused to emit light in a ring shape or other forms, and a design effect can be imparted.

  In the present invention, the detection sensor 11 for detecting the insertion of the key 20 is provided, and the electric lock mechanism 12 that restricts the rotation of the plug 2 by the lock pin 12a is provided. Each element of the electric system of the lock 1 configured as described above is wired to the control unit 30, and operation control of each element is performed by the control unit 30.

  Next, the configuration of the key 20 according to the present invention will be described. As shown in FIG. 3, the key 20 includes a side plate 21 made of metal on at least both sides, and is integrally configured with a light guide portion 22 made of synthetic resin or the like sandwiched between the side plates 21. In the case of the key 20 shown in FIG. 3A, a key ring 20a is formed, and a reflecting element 23 is embedded at an appropriate position of the light guide unit 22 as shown in FIG. 4 so that incident light can be reflected. ing. Note that one or more reflective elements 23 may be provided.

  As a result, as shown in the figure, the incident light L1 from the first light emitting element 6 is reflected by the reflecting element 23, and the reflected light L2 is guided to the light receiving element 7 by the light guide section 22, and a part of the reflected light is reflected. Leaks from the key knob to the outside. As described above, the reflection element 23 for reflecting the incident light L1 can have different reflectivities at the position where the light guide unit 22 is embedded. In addition, although another member may be embedded in the reflective element, an inclined surface may be formed in a part of the light guide unit 22 and a reflective film may be deposited on this part.

  The key 1 of the present invention configured as described above may be formed with a light guide path formed by the light guide portion 22 in the inside thereof, as shown in FIGS. 3 (B) and 3 (C). They may be connected to form a U shape or an inverted U shape. In addition, in the dimple key as shown in FIGS. 3D and 3E, the metal portion may be formed in an H shape, or the outer surface may be entirely formed of metal, and the light guide portion 22 may be filled inside. .

  Next, the configuration of the control unit 30 will be described. FIG. 5 is a block diagram showing a specific configuration of the control unit 30. A setting processing unit 31 having a CPU (Central Processing Unit) therein controls a RAM (Random Access Memory) of the storage unit 32. Further, the light emitting element 6 is connected to the setting processing unit 31, and the light emission timing of the light emitting element is controlled based on on / off of the detection sensor 11 and the reset switch 33. The reset switch 33 is disposed on the back side of the through hole 15a formed in the front panel 15 where the dead bolt and the latch bolt face as shown in FIG.

  Reference numeral 34 denotes a voltage detection unit that detects the value of the output voltage of the light receiving element 7 and outputs it to the A / D converter 35. The A / D converter 35 converts the voltage value input from the voltage detection unit 34 into a digital signal and outputs the digital signal to the storage unit 32 and the comparison processing unit 36. The comparison processing unit 34 performs an authentication process for the key 20, operates the unlock control unit 37 with a signal output based on the authentication result, causes the second light emitting element 9 to emit light, and drives the lock mechanism 12. Then, the distal end of the lock pin 12a is detached from the engaging portion 2c of the plug 2c, and unlocking is possible.

  Next, the flow of the initial setting operation for recognizing the key 20 in the above configuration will be described with reference to FIG. When the reset switch 33 is turned on by operating the pin P in the initial setting, the reset signal S is input to the setting processing unit 31 (step Sa1). By inputting the reset signal S, the setting processing unit 31 enters an initial setting mode. And the key 20 is inserted from the keyhole 2a, and the detection sensor 11 detects this, and outputs the detection signal K to the setting process part 31 (step Sa2).

  The setting processing unit 31 to which the reset signal S and the detection signal K are input emits light from the light emitting element 6 based on the reset signal S (step Sa3), and the light receiving element 7 receives the reflected light L2 from the inside of the key 20 (step Sa4). ), And the output voltage is input to the A / D converter 35, and the voltage value converted into a digital signal is output to the storage unit 32 (step Sa5). At this time, since the write signal W is output from the setting processing unit 31 to the storage unit 32, the voltage value determined by the reflected light reflected by the reflectivity inherent in the key 20 is stored in the storage unit 32. Become.

  The operation flow for unlocking the lock 1 initially set as described above will be described below with reference to FIG. At the stage where the key 20 is inserted into the keyhole 2a for the unlocking operation, the reset switch 33 is off and the reset signal S is not input to the setting processing unit 31. If it is inserted from the keyhole 2a in this state, the detection sensor 11 detects this and outputs a detection signal K to the process setting unit 31 (step Sb1).

  Accordingly, the setting processing unit 31 starts light emission of the light emitting element 6 (step Sb2) and outputs a read signal R to the storage unit 32 (step Sb3). Then, the light receiving element 7 receives the reflected light L2 from the inside of the key 20 (step Sb4), and the output voltage is input to the A / D converter 35 and the voltage value converted into a digital signal is input to the comparison processing unit 36. Output (step Sb5).

  The comparison processing unit 36 is set with the stored value output from the storage unit 32 based on the read signal R, and is compared with the voltage value input from the A / D converter 35. When the voltage value and the stored value match, the unlock control unit 37 is operated to cause the second light emitting element 9 to emit light (step Sb7), and the lock mechanism 9 is driven (step Sb8). Make it possible. That is, when the voltage value matches the stored value in the comparison processing unit 36, the key 20 is authenticated, and unlocking is possible.

  As described above in detail, according to the present invention, since the key authentication is performed by the mechanical method and the optical method, the security can be extremely high. In addition, since the key and the lock have a light emitting function, it can be visually recognized that the key is recognized in the light emitting state, and a design effect by light decoration can be obtained. Furthermore, according to the present invention, since the individual keys can be optically recognized by operating the reset switch, individual authentication can be performed based on the reflectance inside the different keys. Therefore, since the authentication setting can be performed only by the reset operation, for example, even when the key is lost, a key suitable for the existing lock can be easily created.

It is a figure explaining the outline | summary of a structure of this invention. It is a figure explaining the outline | summary of a structure of this invention. It is a figure which shows the example of a structure of the key of this invention. It is a figure explaining the function of this invention. It is a block diagram which shows the structure of the control part of this invention. It is a figure which shows the example of the implementation state of this invention. It is a flowchart figure which shows the flow of a process of this invention. It is a flowchart figure which shows the flow of a process of this invention.

Explanation of symbols

1 .... Lock 2 .... Plug 3 .... Cylinder barrel 4 .... Pin 5 .... Board 6 .... First Light-emitting element 7 ··· Light-receiving element 8 ··· Light guide holder 9 ······· Second light-emitting device 10 ··· Shading layer 11 ··· Detection sensor 12... Lock mechanism 20... Key 21... Side plate 22... Light guide unit 30... Control unit 31. ··· Memory 33 ··· Reset switch 34 ··· Voltage detector 35 ··· A / D converter 36 ··· Comparison processing unit 37 ··· Solution Lock control unit

Claims (8)

It is a lock device that locks and unlocks by fitting the plug to the cylinder body so that it can rotate, matching the pin to the key ring or dimple of the key,
A light guide is provided in the longitudinal direction inside the metal main body, and one or a plurality of reflecting elements are provided at appropriate positions of the light guide, and a part of the light incident on the light guide is A key reflected by the reflective element and emitted from the tip of the light guide,
A lock comprising a first light emitting element that irradiates the tip of the key when the key is inserted into the plug and a light receiving element that receives the reflected light reflected by the reflective element of the key;
A lock key device comprising:   A light guide unit whose light emitting surface coincides with the keyhole surface is provided so as to surround the outer periphery of the lock, and a second light emitting element for irradiating the light guide unit is provided to enable authentication display. The lock key device according to claim 1, wherein:   The lock device according to claim 1, wherein a second light emitting element is provided in the vicinity of the keyhole surface so that authentication display is possible.   2. The lock device according to claim 1, further comprising an electric lock mechanism for restricting rotation of the plug.   2. The lock device according to claim 1, further comprising a detection sensor for detecting when the key is inserted from the keyhole.   A light guide is formed in the longitudinal direction inside the metal main body, and one or a plurality of reflective elements are provided at appropriate positions of the light guide, and a part of the light incident on the light guide is A key that is reflected by the reflecting element and is emitted from the tip of the light guide.   When the key is inserted into the plug, the first light emitting element that irradiates the tip of the key, the light receiving element that receives the reflected light reflected by the reflecting element of the key, and the authentication display are made possible. A lock comprising: the light emitting element of 2; an electric lock mechanism that restricts rotation of the plug; and a detection sensor that detects when a key is inserted from the keyhole. A light guide is provided in the longitudinal direction inside the metal main body, and one or a plurality of reflecting elements are provided at appropriate positions of the light guide, and a part of the light incident on the light guide is A key reflected by the reflective element and emitted from the tip of the light guide,
When the key is inserted into the plug, the first light emitting element that irradiates the tip of the key and the light receiving element that receives the reflected light reflected by the reflecting element, and the authentication display can be performed. And a lock provided with a light-emitting element, an electric lock mechanism that restricts the rotation of the plug, and a detection sensor that detects when the key is inserted through the keyhole,
A set value in which the value of the output signal from the light receiving element that emits the first light emitting element based on the detection signal of the detection sensor that has detected the insertion of the key and receives the reflected light reflected by the reflecting element is set in advance. When the two keys coincide with each other, the second light emitting element emits light to display an authentication, and the lock mechanism is operated to enable unlocking.

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