JPH11210285A - Electronic code lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent confusion of ID code information resulting from the approach of a plurality of electronic code locks by forming the key base asymmetrically and positioning an ID code generation circuit at the more front end side than the key base end face. SOLUTION: The base 27 of a key 26 is made asymmetrical in the vertical directions against the center shaft L. That is, a part 27b extended downward is made shorter than the length of a part 27a extended upward. The end of a key-comparison circuit 25 is arranged to protrude to the more front end side of the key 26 than the extension line M of the other end face 30 of the key 26 positioned in the reverse direction against the front end of the key 26. As a result, even in the case that a plurality of electronic code locks are attached to a key holder and these locks are positioned close to the nearby position of the key cylinders, only the electronic code lock at the closest position to the key cylinder is magnetically joined with a car side coil. Accordingly, decoding confusion of the ID code information is avoidable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to locking or unlocking a door of a vehicle by comparing an ID code set on a key such as an electronic lock with an ID code set on the vehicle. The present invention relates to an electronic code lock used for the electronic device.

[0002]

2. Description of the Related Art An electronic code lock of this kind will be described below with reference to FIGS. The electronic code lock 1 includes a key B and a grip portion A. When the key B is inserted into the key insertion slot 2, power is supplied from the power supply circuit 3 to the vehicle-side coil 4. As a result, an induction magnetic field is generated from the vehicle-side coil 4, and the induction magnetic field is generated in parallel with the key rotation axis, and the ID stored in the grip portion A of the electronic code lock 1.
When the key side coil 6 provided in the code generation circuit 8 approaches the vehicle side coil 4, they are magnetically coupled to each other. Thereby, the ID code is transmitted from the circuit unit 9 constituting the ID code generation circuit 8 housed in the gripper A to the vehicle-side coil 4 in which the key-side coil 6 is magnetically coupled.
The transmitted ID code is supplied to an ID code receiving / decoding circuit 15, and the ID code is compared with a set reference ID code to check whether or not the ID code is correct.
On the other hand, if the key cylinder 7 is not mounted horizontally but mounted diagonally, that is, with the tip facing downward, the grip portion of the electronic code lock 12 of another vehicle mounted on the key holder 11 is mounted. ID stored in A '
The key-side coil provided in the code generation circuit 13 also receives the above-mentioned induction magnetic field and receives power supply at the same time. Reference numerals 10 and 14 denote keyless circuits used to lock and unlock the doors of the vehicle wirelessly.

[0003]

However, in such an electronic code lock, (B or B ') is supplied to the vehicle-side coil 4 from the power supply circuit by being inserted into the key cylinder 7, and the induction (B or B') is induced. When a magnetic field is generated, the ID codes from the ID code generation circuits 8 and 13 of both the electronic code locks 1 and 12 are received by the vehicle-side coil 4 at the same time. As a result, there has been a problem that the ID code receiving / decoding circuit 15 on the vehicle side that has input the ID code confuses the decoding of the ID code information and cannot be decoded.

The present invention has been made in view of such a problem. A plurality of keys are attached to a key holder, and the plurality of electronic code locks are located near a key cylinder. Even if there is, it is an object to make only the electronic code lock closest to the key cylinder magnetically coupled to the vehicle side coil.

[0005]

According to a first aspect of the present invention, there is provided an ID code generating circuit for outputting an ID code by being electromagnetically coupled to a control electronic circuit, and an ID code generating circuit. An electronic code lock comprising a resin holding portion to be stored and a key having a base fixed to the holding portion and having a key groove formed in an exposed portion formed from the base toward the tip. The base of the key has overhangs formed on both sides with respect to the central axis of the key, and one of the overhangs has an overhang length set to the other overhang, and the ID code generation circuit includes: The key is arranged so as to be adjacent to an overhang portion having a short overhang of the base portion and to be partly protruded from the end surface of the base portion of the key to the tip end side of the key and housed in the housing. And butterflies.

A second invention is characterized in that the ID code generation circuit is a key collation circuit for generating an ID code corresponding to a key groove formed in the key.

According to a third aspect of the present invention, the grip portion of the electronic code lock houses a keyless circuit and a key collating circuit, and both of these circuits have walls erected around them, and the storage space is formed by the walls. Are separately housed in respective spaces of a rubber seal member divided into two parts.

According to a fourth aspect of the present invention, the rubber seal member comprises:
It is characterized in that a tip side of a portion where the key matching circuit is stored is formed so as to protrude toward the key tip side.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings shown in FIGS. 1 to 8, reference numeral 20 denotes a resin grip portion of the electronic code lock, which is a lower case 21 and a switch knob pressing window 2.
An upper case 22 is provided with holes 2a and 22b. Between the lower case 21 and the upper case 22, a peripheral portion of a deep dish-shaped rubber seal member 23 is sandwiched. Inside, a keyless circuit 24 and a key matching circuit 25 corresponding to the ID code generation circuit 8 are housed and held.

In FIG. 2, an upper case 22 is provided.
A key groove (not shown) is engraved on an exposed portion formed from the base portion 27 toward the distal end on a part of the peripheral wall erected around the periphery, and the entire shape is formed substantially in a T-shape. A base 27 of the key 26 is formed of resin integrally with the upper case 22. The base 27 of the key 26 is
The portion 27b extending downward is asymmetrical with respect to the center axis L, that is, the portion 27b extending downward is shorter than the length of the portion 27a extending upward, and as shown in FIG. 26 is fixed to the lower case 21 by screws 28.

Next, the rubber seal member 23 will be described. As shown in a plan view in FIG. 5, the rubber seal member 23 has a wall 23a erected over the entire periphery, and has a rectangular shape slightly longer in the vertical direction. Further, one corner of the rubber seal member 23, that is, a lower right corner in FIG. 5 is formed so as to protrude outward, and the space formed by the peripheral wall 23 a is formed by a partition wall 29. Two storage spaces A and B
It is divided into. The storage space A is formed larger than the storage space B, and the keyless circuit 24 is stored therein. The smaller storage space B extends to the protruding corner of the seal member 23, and the key verification circuit 25 is stored in the storage space B. Also,
On the bottom surface of the rubber seal member 23, there are provided switch knob pressing windows 22b, 2 provided in the upper case 22.
2a so as to face the switch knob pressing portions 23, respectively.
b and 23c are formed integrally.

After the keyless circuit 24 is stored in the storage space A of the rubber seal member 23 and the key matching circuit 25 is stored in the storage space B, the upper case 22 is closed.
Then, the switch knob pressing portions 23b and 23c are fitted so as to face the switch knob pressing windows 22b and 22a, so that the end portion of the key collating circuit 25 becomes a short portion 27b of the base portion 27 of the key 26 overhanging. The key 26 is disposed so as to protrude from the extension line M of the other end surface 30 of the key located in the opposite direction to the tip of the key 26. As a result, when the key 26 is inserted into the key cylinder 7, the key matching circuit 25 comes closer to the vehicle-side coil 4 than before, so that the vehicle-side coil 4
Can be received even if the induction magnetic field generated from the signal is weak. As a result, the effective range of the induction magnetic field generated from the vehicle side coil 4 becomes smaller than the conventional effective range, and only the electronic code lock closest to the key cylinder 7 receives the induction magnetic field from the vehicle side coil 4. Become.

[0013]

As described above, according to the present invention, the base of the key of the magnetically coupled electronic code lock is formed asymmetrically, and the ID is located closer to the tip end of the key than the end face of the base of the key.
By storing it in the grip so that the code generation circuit is located, a plurality of electronic code locks are attached to the key holder,
Even when the plurality of electronic code locks are located close to the key cylinder, all the electronic code locks attached to the key holder are not magnetically coupled with the vehicle side coil. Be demonstrated.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of the appearance of a portable electronic code lock according to Embodiment 1 of the present invention.

FIG. 2 is an explanatory plan view of an essential part of the electronic code lock shown in FIG. 1 with a lower case 21 removed.

3 is a key 26 to the upper case 22 in FIG.
FIG. 3 is an explanatory plan view of the same before integral molding.

FIG. 4 is an explanatory cross-sectional view of a principal part taken along line XX ′ of FIG. 1 with a focus on a resin gripping portion 20 of the electronic code lock;

5 is an explanatory plan view of the rubber seal member 23 viewed from the opening side from below in FIG. 4;

FIG. 6 is a cross-sectional view taken along the line YY 'in a state where the keyless circuit 24 and the key matching circuit 25 are housed and attached to the rubber seal member 23 in FIG.

FIG. 7 is an explanatory plan view of the rubber seal member 23 in FIG. 4 as viewed from above, that is, from the switch knob side.

FIG. 8 is a side view of the side surface of the rubber seal member in FIG. 7 as viewed from the right.

FIG. 9 is an explanatory diagram of a conventional electronic code lock, a system explanatory diagram using the same, and a problem thereof.

10 is an explanatory diagram showing the internal structure of the ID code generation circuits 8 and 13 in FIG.

[Explanation of symbols]

 5 Keyhole 20 Resin gripping part 21 Lower case 22 Upper case 22a, 22b Window 23 Rubber seal member 23a Wall 23b, 23c Switch knob pressing part 24 Keyless circuit 25 Key matching circuit 26 Key 27 Base 28 Screw 29 Partition wall 30 Key Other end view

Claims (4)

[Claims] 1. An ID code generation circuit that outputs an ID code by being electromagnetically coupled to a control electronic circuit;
A resin grip for accommodating the ID code generating circuit, and a key having a base fixed to the grip and having a key groove formed in an exposed portion formed from the base toward the tip. In the electronic code lock, the base of the key has overhangs formed on both sides with respect to a central axis of the key, and one of the overhangs has an overhang dimension set to be longer than the other overhang. The ID code generation circuit is arranged adjacent to the overhang portion of the key base having a short overhang dimension and partly protruding from the end face of the key base to the tip end side of the key and housed in the housing. An electronic code lock characterized by the following. 2. The electronic code lock according to claim 1, wherein said ID code generating circuit is a key collating circuit for generating an ID code corresponding to a key groove formed in said key. 3. The grip portion of the electronic code lock houses a keyless circuit and a key collating circuit, and both of these circuits have walls erected around them, and the storage space is divided into two by the walls. 3. The electronic code lock according to claim 2, wherein the rubber seal members are separately stored in respective spaces. 4. A key sealing device according to claim 3, wherein the rubber sealing member is formed such that a distal end side of a portion in which the key matching circuit is housed protrudes toward the key distal end side. Electronic sign lock.