JPH0613968Y2 - Key information reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a key information reading device capable of electrically reading the position and shape of a key groove from a key as key information.

(Prior Art and its Problems) As a conventional key information reading device of this type, Japanese Patent Laid-Open No. 64-719
There is one disclosed in Japanese Patent No. 77, but this is provided with only one detection part that detects the shape of a plurality of notched grooves formed in the key inserted into the key hole of the reading device main body, and the key of the key Timing is detected by detecting the state of entry into the hole, and the key information is read by sequentially detecting the shape of each notched groove from the tip side of the key at this timing.There is one notch groove shape detection unit. Although there is an advantage that it is only necessary to provide it in a place, since the shape of each notch groove is directly optically detected when the key is entering the key hole, that is, when it is moving, depending on the insertion speed of the key into the key hole Interference of light or irregular reflection of light at the edge of the groove causes the shape of some groove to be detected as an incorrect shape, or when a foreign substance enters the key hole, the timing is shifted and the shape of the groove Can not be detected accurately, There is a possibility to provide key information that Tsu.

Also, as a device for reading the key information in a stationary state, there is a device described in Japanese Patent Laid-Open No. 57-6068, which uses a multiplying device such as a link mechanism to measure the movement of a probing tumbler for measuring the depression of the key. Multiplying and blocking multiple optical paths by its movement, and obtaining the key information by detecting the degree of blocking, there was a problem in terms of practicality such as a complicated structure and high production cost. .

(Object of the Invention) In order to solve the above-mentioned problems of the prior art, the present invention seeks to detect the position and shape of the key groove in response to the key groove without using an intermediary member such as a multiplier. It is an object of the present invention to provide a device capable of accurately reading key information by directly detecting the position of a deep tumbler by optical means.

(Structure of the Invention) A key information reading device according to the present invention has a key hole into which a key having a plurality of notched grooves is inserted at a predetermined position along the longitudinal direction, and by inserting the key into the key hole, The main body provided with a plurality of exploratory tumblers corresponding to each of the engraved grooves, which moves downward and fits in contact with the engraved groove of the key at one end to measure the depth of the engraved groove, and And a depth detecting device for confirming the position and outputting a signal indicating the depth of the key groove.

(Embodiment) An embodiment illustrating a specific configuration of the present invention will be described below.

That is, 1 has knurled grooves K ₁ ... K ₅ formed at predetermined 5 positions,
A block-shaped reading device main body for reading information of a key having five depths including a depth of zero, that is, a depth of zero, and a key K formed in the longitudinal direction from the end face is inserted. a key hole 1 _1, formed below the probe depth tumbler fitting the fitting plurality of interpolating the square hole-like insertion hole 1 ₂ ... 1 ₂ and to be perpendicular toward the same key hole 1 ₁ from the upper end surface, both sides the insertion hole on a surface substantially s center side 1 ₂ ... 1 ₂ light projection window that is formed to penetrate the
1 ₃ ... 1 ₃ has a light receiving window 1 ₄ ... 1 _4, the insertion hole 1 ₂ are formed respectively in positions corresponding to the respective increments groove upon insertion of the key K into the key hole 1 ₁ . 2 ... 2 are the insertion holes 1 ₂ ... 1 ₂
In prismatic probe depth tumbler all the same dimensions inserted in, the substantially central portion of the probe depth tumbler 2 transparent portion serving pinhole or slit 2 ₁ is formed, the lower bottom curved portion by the spring 3 That it is biased to fall into the key hole 1 _1. Reference numeral 4 stores the main body 1 and confirms the positions of the exploration tumblers 2 ... 2 in the same body, that is, the positions of the translucent portions 2 ₁ ... 2 ₁ formed on the tumblers.
In housing then box provided with a plurality of depth detecting device for detecting the depth of increments groove of the key K that are in contact with each depth detection device includes a projector 5 for irradiating light to the light projection window 1 ₃ of the body 1, the light receiving window 1 consists of five stages coming out ₄ height light from each and receiver 6a ... 6e for receiving individually, between the light receiving window 1 ₄ and the receiver 6a ... 6e is fitted is projector 5 of the storage box 4 The optical fiber 6 ₁ inserted in the side wall facing the hole 4 ₁ in the side wall to be inserted
… 6 ₁ optically coupled. The light receiving window 1 ₄ pinholes preferably is stepwise formed in accordance with the depth. In the figure, 7 is, when the key K is inserted to a predetermined position of the key hole 1 ₁ body 1, a key closed is pressed contacts the tip of the key K in a predetermined insertion position detecting microswitch,
Energization control for the projectors 5, ... The light emitter and the light receiver use a light emitting diode and a phototransistor which are small and have a long life.

(Operation of the Invention) The specific usage and operation of the present invention will be described with reference to the illustrated embodiment according to the above-described configuration of the present invention.

That is, knurls K ₁ , K ₂ , K ₃ , which are numbered sequentially from the tip,
K _4, the depth of the K ₅ inserts the key K, respectively 1,0,3,4,2 the key hole 1 ₁ of the body 1, sequentially pushed while the key hole of each probe depth tumbler 2 in the tapered portion of the distal end 11 When entering into 1 ₁ and reaching a predetermined position, the tip end pushes the contact of the micro switch 7 to close the contact, so that electric circuits such as the projectors 5 ... 5 and the detection circuit are energized to start reading. .

At this time, as shown in FIG. 2, the deep tumblers 2 ... 2 have their lower end portions in contact with the corresponding notched grooves K ₁ ... K ₅ , respectively, and the pinholes 2 ₁ ... 2 _{1 of the} deep tumblers 2 ... 2 Are located at positions corresponding to the depths of the respective kerfs K ₁ ... K ₅ . Although read the depth clogging key information for all increments groove of the key K to the position of the pinhole 2 ₁ ... 2 ₁ is detected by the corresponding depth detecting device respectively, the depth detecting device corresponding to the increments of the grooves K ₄ as an example The depth detection method by will be described.

That is, the light emitted from the projector 5 body 1 from light projection window 1 ₃
Is incident to the inner, light projection window 1 ₃ and the light receiving window 1 ₄ through the pin holes 2 ₁ a probe deep tumbler 2 in between coming out of the light receiving window 1 _4. The light is sensed in the light receiver 6e through the fiber optic ₆₁ light receiver 6e lowermost corresponding straight ahead, the electrical signal from the light receiver are output. This electric signal indicates that the exploration tumbler 2 is in contact with the deepest kerf K ₄ at the depth 4, and this depth detecting device detects that the kerf K _{4 has} a depth of 4.

In this way, the depths of the other groove grooves K ₁ , K ₂ , K ₃ , K ₅ are ₁ , 0, ₂ depending on the output signals from the photodetectors 6b, 6a, 6c, 6d of the respective depth detecting devices. 3 is detected.

Therefore, when the signals output from these depth detecting devices are put together, coded and expressed as a matrix, this key K
The key information of is as follows.

That is, the key information represented by the above matrix is read by the device of the present invention, and all the information of the key obtained by the combination of the five depths of the five dents can be read. Is.

If the key information read by this device is stored in the storage device together with the key number, the key information of the key can be immediately called up by simply inputting the key number, and the key shape can be displayed. Yes, in addition, this device is installed at the common entrance of apartment houses such as mansion, and all the key information of the keys owned by the residents of this apartment house is stored in advance, and the key owned by the person who enters the common entrance is stored. If you open the door of the common entrance only when it matches the key information, you can enhance the crime prevention effect.
Even if a resident moves out of an apartment house due to moving, etc., by deleting the key information of the key owned by the resident from the storage device, it is possible to prevent the evacuee from illegal entry from the common entrance. .

In the above-mentioned embodiment, as the depth detecting device for detecting the position of the exploration tumbler, an optical method comprising a light projector and a light receiver is adopted. However, as shown in FIG. 1 and molding the Sagufuka tumbler 2 ... 2 an electrically insulating material such as synthetic resin, a plate-shaped electrode 8 on the inner surface of the location corresponding to the light projecting window 1 _3, the inner surface of the location corresponding to the light receiving window 1 ₄ A plurality of spherical electrodes 9 ... 9 stepwise according to depth
Respectively provided, the conductive portion 10 of the copper wire or the like is provided at a location corresponding to the pin hole 2 ₁ Sagufuka tumbler 2, electrodes 8 and 9 ...
It is convenient that the positions of the probing tumblers 2 can be directly electrically detected by electrically connecting the nine parts through the contacts of the conductive part 10. Also, the exploration tumbler 2
2 does not have to have the same dimensions as long as the positions of the light transmitting portion or the conductive portion are constant, and the shape thereof is not limited to the prismatic shape,
As shown in FIG. 5 a to c, the center may be a light-transmitting portion 2 _1, and tube 2 ₂ by penetrating columnar shape which has been subjected to rotation stopper, translucent without a detent part even those slit grooves 2 ₁ and the cylindrical shape has been chopped in the circumferential direction and also in certain respects the may be of slit grooves 2 ₁ and the prismatic, whether the shape It doesn't matter. Further, instead of the micro switch 7 which detects a predetermined position of the key, various methods such as an optical detection method which emits a signal when light is shielded by the tip of the key may be adopted. Further, a light transmitting portion such as a pinhole or a slit is formed at a predetermined position of the key, and another light receiver is provided which senses light through the light transmitting portion when the key is inserted to a predetermined position of the key hole. If there is no signal from the light receiver, if key information is not read, it will not react to imitation keys other than the regular key provided with the light-transmitting part, and illegal entry can be prevented, Further, the crime prevention effect can be enhanced.

(Effect of the Invention) As described above, according to the key information reading device of the present invention, the shape of each notch groove provided at a predetermined position in a state where the key is inserted to a predetermined position and is stationary, that is, the depth, Since the vertical position of the sounding tumbler for measuring the depth is detected by the order of the light receivers that detect the light passing through the translucent part of the sounding tumbler, it is possible to read the data in each moving state of the key. The one in which the shape of the groove is directly read optically and the one in which the key information is read by expanding the movement of the probing tumbler by mechanical means to read the wrong key information may be used. It has absolutely no structure, has an extremely simple structure, and can be manufactured at low cost, but can always obtain accurate key information, and has a great practical effect.

[Brief description of drawings]

The drawings illustrate the embodiments of the present invention. FIG. 1 is an exploded perspective view of the device of the present invention, FIG. 2 is a vertical sectional side view of the device of the present invention in which a key is inserted, and FIG. Figure A
FIG. 4 is an enlarged vertical sectional view taken along line A, FIG. 4 is an enlarged vertical sectional view showing another embodiment of the device of the present invention, and FIGS. 5A to 5C are perspective views showing other embodiments of the sounding tumbler. 1 ... reader body, 2 ... exploration tumbler, 3 ... spring, 4 ... storage box, 5 ... projector, 6a ... 6e
...... Receiver, 7 ...... Micro switch, 8 ...... Electrode, 9
……electrode

Claims (1)

[Scope of utility model registration request] 1. A key hole for inserting a key having a plurality of notched grooves is provided at a predetermined position along the longitudinal direction, and the key is moved up and down by inserting the key into the key hole, and at the predetermined position, the key is moved. A body with a plurality of probing tumblers with a light-transmitting part that correspond to each scoring groove to measure the depth of the scoring groove by contacting one end with the scoring groove, and a floodlight with an insertion hole for each probing tumbler. A plurality of light receivers that detect light that has passed through the translucent part of the sounding tumbler are installed, and the position of each sounding tumbler is confirmed by the operation of this light receiver, and a signal indicating the depth of the key groove is output. A key information reading device, comprising: