JPH074733U - Key cylinder device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a key cylinder device in which a bobbin wound with a primary coil can be easily attached to a vehicle. [Structure] A bobbin 18 around which a coil mounting portion 11 is integrally provided on a front portion of a rotor case 2 and a primary coil 17 is wound,
In the state of being covered with the cover 23, the engaged portion 25 of the cover 23 is engaged with the engaging portion 15 of the coil attaching portion 11 to attach it to the coil attaching portion 11. Since the bobbin 18 is attached to the rotor case 2, the bobbin 1
8 can be attached to the vehicle by attaching the key cylinder body 1 to the lock body of the vehicle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a key cylinder device having a primary coil.

[0002]

[Prior art]

 In recent years, some automobiles are equipped with a so-called wireless door lock device. This wireless door lock device is generally provided with a transmitting circuit and a battery as a power source for the transmitting circuit at the base of the key to be inserted into the ignition key cylinder and the door key cylinder, and the user operates the transmitting circuit. When an electromagnetic wave signal is emitted, the radio wave signal is received by the receiver provided on the vehicle body side, and the received signal discrimination means decodes the radio wave signal, and the received radio wave signal is the specific signal set for the car. If there is, the electric actuator is operated to automatically lock the door, or the lock is automatically released.

By the way, in such a wireless door lock device, when the battery of the key is exhausted and the electric power is exhausted, the radio signal cannot be emitted, and the lock operation and the unlock operation by the radio signal cannot be performed. There is a problem called.

Therefore, the present inventors have considered the following configuration (see, for example, Japanese Patent Application No. 3-217954). That is, a primary coil is provided on the ignition key cylinder side, while a secondary battery that can charge the battery of the key is used and a secondary coil is provided on the key, and the key is inserted into the ignition key cylinder and rotated. When the engine is started, the primary coil is energized to change its current, and based on the change in the current flowing in this primary coil, an induced electromotive force is generated in the secondary coil on the key side. Based on the configuration, the secondary battery of the key is charged.

According to such a configuration, the secondary battery of the key can be charged while the engine is being driven.

[0006]

[Problems to be solved by the device]

 However, in the above configuration, the bobbin around which the primary coil is wound is attached to the lock body on the vehicle side where the key cylinder body is mounted by screwing, so that the bobbin for the vehicle (lock body) is It was necessary to assemble it separately from the key cylinder body, and there was a problem that the bobbin was troublesome to install.

Therefore, an object of the present invention is to provide a key cylinder device capable of easily mounting a bobbin wound with a primary coil on a vehicle.

[0008]

[Means for Solving the Problems]

 The key cylinder device of the present invention has a rotor housing, a rotor case mounted to a vehicle, a rotor housed in the rotor housing, into which a key having a secondary coil is inserted, and a rotor case of the rotor case. A coil mounting portion that is integrally provided in the front portion and that has a fitting portion and a plurality of engaging portions, a primary coil is wound, and a first fitted portion is provided. A bobbin arranged in the coil mounting part in a state where the mating part is fitted to the mating part, a second mated part and a plurality of mated parts, and a second mated part. A cover to be mounted on the coil mounting portion in a state of covering the bobbin by engaging the engaging portion with the engaging portion and engaging each engaged portion with the engaging portion. It was done.

[0009]

[Action]

 According to the above means, the bobbin wound with the primary coil is mounted on the coil mounting portion provided on the rotor case mounted on the vehicle.Therefore, the bobbin on the vehicle is mounted on the rotor case. Can be done at the same time. However, in this case, the bobbin and the cover covering the bobbin can be reliably positioned with respect to the coil mounting part by fitting the first and second fitted parts to the fitting part of the coil mounting part.

[0010]

【Example】

 Hereinafter, an embodiment in which the present invention is applied to a key cylinder device for ignition will be described with reference to the drawings. The key cylinder body 1 is attached to a lock body of a vehicle (not shown), and includes a rotor case 2 and a rotor 4 rotatably housed in a rotor housing 3 of the rotor case 2. There is. The rotor case 2 and the rotor 4 are made of zinc.

The rotor 4 has a key insertion opening 5 extending in the axial direction thereof, and a rotor cover 6 attached to the front surface thereof. The tumbler is movably arranged.

As is well known, when a regular key 7 is inserted into the key insertion opening 5, the rotor 4 is moved so that each tumbler is housed in the rotor 4 and can be rotated. Although allowed, when a key other than the regular key is inserted, a part of the tumbler protrudes to the outside of the rotor 4 and cannot rotate. Further, an ignition switch (not shown) that is operated according to the rotation of the rotor 4 is provided behind the rotor 4.

On the base portion 7 a of the key 7, a secondary coil 8, a rechargeable secondary battery 9, an oscillator circuit (not shown) using the secondary battery 9 as a power source, and the oscillator circuit is oscillated. A switch operation button 10 and the like are incorporated, and a radio signal is emitted from the transmission circuit in accordance with the operation of the operation button 10.

On the other hand, on the front portion of the rotor case 2, an annular coil mounting portion 11 is integrally provided so as to project laterally like a brim. As shown in FIG. 3, the coil mounting portion 11 is formed with a short cylindrical portion 12 surrounding the rotor 4 in the center of the front surface, and is located near the short cylindrical portion 12 to serve as a fitting portion. Of the fitting recess 13 is formed, an inclined lead wire guide portion 14 is formed on the outer peripheral portion corresponding to the fitting recess 13, and the engaging projections 15 as engaging portions are formed at four locations on the outer peripheral portion. Has been formed.

A shield plate 16 made of a magnetic material is arranged on the front side of the coil mounting portion 11, and a plastic bobbin 18 around which a primary coil 17 is wound is mounted on the front side of the shield plate 16. Has been done. A lead wire 19 connected to the primary coil 17 is led out.

In this case, the shield plate 16 is formed of permalloy, has a C-shape having an opening 20 having a width corresponding to the fitting recess 13, and is a short cylinder of the coil mounting portion 11. It is fitted to the portion 12. A seal 21 made of, for example, a polyester sheet is attached to the back surface of the shield plate 16, and the seal 21 insulates the shield plate 16 from the coil mounting portion 11.

The bobbin 18 has an annular shape corresponding to the coil mounting portion 11, and has a first convex portion 22 as a first fitted portion on the inner peripheral side of the back surface. The convex portion 22 is fitted into the fitting concave portion 13, and the inner peripheral portion is fitted into the short cylindrical portion 12.

A plastic cover 23 is mounted on the front surface of the coil mounting portion 11 so as to cover the primary coil 17 and the bobbin 18. The cover 23 has a double-cylinder shape having a stepped inner cylinder portion 23a and an outer cylinder portion 23b, and has a rear end portion of the inner cylinder portion 23a which serves as a second fitted portion. The second convex portion 24 is formed, the outer cylindrical portion 23b is formed with engaging holes 25 as engaged portions at four positions, and the notch portion 26 is formed at a portion corresponding to the second convex portion 24. Are formed.

As shown in FIG. 2, on the front surface of the cover 23, characters “LOCK”, “ACC”, “ON”, and “START” for indicating the rotational position (state of the ignition switch) of the rotor 4 are shown. Is displayed.

In the cover 23, the second convex portion 24 is fitted in the fitting concave portion 13 of the coil mounting portion 11, the inner cylindrical portion 23a is fitted in the short cylindrical portion 12, and the outer cylindrical portion 23b is formed. The coil mounting portion 11 is mounted on the front surface of the coil mounting portion 11 by fitting the outer peripheral surface of the coil mounting portion 11 and engaging the engaging holes 25 with the engaging convex portions 15.

With the cover 23 mounted on the coil mounting portion 11, the lead wire 19 is led out from the cutout portion 26 (see FIG. 1). The lead wire 19 is provided on the vehicle side. It is adapted to be connected to a control device (not shown).

Here, a procedure for assembling the shield plate 16, the bobbin 18, and the cover 23 to the key cylinder body 1 will be described. First, as shown in FIG. 3, with the back side of the cover 23 facing upward, the bobbin 18 around which the primary coil 17 is wound is housed between the inner cylindrical portion 23a and the outer cylindrical portion 23b. At this time, the first convex portion 22 and the second convex portion 24 are made to coincide with each other, and the lead wire 19 is extended outward from the cutout portion 26.

Next, the shield plate 16 to which the seal 21 is attached is placed on the bobbin 18 such that the seal 21 side faces upward (the side without the seal 21 faces the bobbin 18 side). At this time, the opening 20 is fitted into the first and second protrusions 22 and 24.

Then, the positions of the first and second convex portions 22 and 24 and the fitting concave portion 13 of the coil mounting portion 11 are aligned, and the positions of the lead wire 19 and the lead wire guide portion 14 are aligned. The coil mounting part 11 is press-fitted into the cover 23. Then, the first and second convex portions 22 and 24 and the fitting concave portion 13 are fitted together, the inner cylindrical portion 23a and the short cylindrical portion 12 are fitted together, and the outer cylindrical portion 23b and the coil mounting portion are fitted. The outer peripheral surface of the portion 11 is fitted, and the engaging holes 25 of the outer tubular portion 23b engage with the engaging convex portions 15 of the coil mounting portion 11.

As a result, the assembling of the shield plate 16, the bobbin 18 and the cover 23 to the key cylinder body 1 is completed. At this time, the shield plate 16, the bobbin 18, and the cover 23 are reliably mounted in the coil mounting portion 11 while being positioned.

The key cylinder body 1 to which the bobbin 18 and the cover 23 are attached is attached to a lock body (not shown) of the vehicle. Therefore, the bobbin 18 around which the primary coil 17 is wound can be attached to the vehicle at the same time as the key cylinder body 1 is attached to the lock body.

On the other hand, in the configuration described above, the key 7 is inserted into the key insertion opening 5 of the rotor 4, and the rotor 4 is rotated from the “LOCK” position in the direction of arrow A in FIG. When it is turned to the position, the engine is started via a starter (not shown). When the key 7 is released, the rotor 4 is automatically returned to the "ON" position.

Here, a control device (not shown) provided on the vehicle side energizes the primary coil 17 and controls it based on the start of the engine. Based on the change in the current flowing through the primary coil 17, an induced electromotive force is generated in the secondary coil 8 on the key 7 side, and the secondary battery 9 of the key 7 is charged based on this electromotive force. become.

At this time, since the shield plate 16 made of a magnetic material is arranged between the bobbin 18 around which the primary coil 17 is wound and the coil mounting portion 11 provided on the rotor case 2, the primary coil 17 is The magnetic flux due to the magnetic flux passes through the shield plate 16, and the magnetic flux acting on the rotor case 2 and the rotor 4 can be reduced as much as possible. As a result, the generation of eddy current due to the magnetic flux on the key cylinder body 1 side can be suppressed, and the decrease in the output of the primary coil 17 can be suppressed, and the magnetic flux of the primary coil 17 can be reduced to the secondary coil on the key 7 side. 8 can be effectively operated.

Further, in this case, since the shield plate 16 and the coil mounting portion 11 are insulated from each other by the seal 21 attached to the shield plate 16, the magnetic flux passing through the shield plate 16 is on the coil mounting portion 11 side. It is possible to further prevent the leak to the head and further suppress the decrease in the output of the primary coil 17.

In the above-mentioned embodiments, permalloy is exemplified as the material of the shield plate 16, but ferrite may be used. Further, the present invention is not limited to the ignition key cylinder, but can be applied to a door key cylinder.

[0032]

[Effect of device]

 As is apparent from the above description, according to the present invention, the bobbin around which the primary coil is wound is mounted on the coil mounting portion provided on the rotor case. Can be performed at the same time as the mounting of the rotor case, so that the bobbin can be easily mounted to the vehicle. Moreover, in this case, the bobbin and the cover that covers the bobbin have the advantage that the first and second fitted parts are fitted to the fitting part of the coil mounting part, so that the bobbin and the cover can be reliably positioned with respect to the coil mounting part. is there.

[Brief description of drawings]

1 shows an embodiment of the present invention, in which a key is inserted, and a side view of a main part broken along a line corresponding to line XX in FIG.

[Figure 2] Front view

FIG. 3 is an exploded perspective view of a main part

[Explanation of symbols]

1 is a key cylinder body, 2 is a rotor case, 3 is a rotor housing, 4 is a rotor, 7 is a key, 8 is a secondary coil, 9 is a secondary battery, 11 is a coil mounting part, and 13 is a fitting recess (fitting). Mating part), 15 is an engaging convex part (engaging part), 17 is a primary coil,
18 is a bobbin, 22 is a first convex portion (first fitted portion),
23 is a cover, 24 is a second convex portion (second fitted portion),
25 is an engaging hole (engaged portion).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Mizuno No. 1 Noda, Toyota, Oguchi-machi, Niwa-gun, Aichi Prefecture Tokai Rika Electric Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A rotor case which has a rotor housing portion and is mounted on a vehicle, a rotor which is housed in the rotor housing portion and into which a key having a secondary coil is inserted, and a front portion of the rotor case. A coil mounting part provided with a fitting part and a plurality of engaging parts; and a primary coil wound with a first fitted part.
A bobbin arranged on the coil mounting portion in a state where the first fitted portion is fitted to the fitting portion; a second fitted portion and a plurality of engaged portions; A cover to be mounted on the coil mounting portion in a state of covering the bobbin by fitting two fitted portions to the fitting portion and engaging each engaged portion with the engaging portion; A key cylinder device comprising: