JPH0136676Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a theft detection device that detects illegal intrusion into a vehicle, and in particular, the theft detection device is unlocked by pulling out the key cylinder and operating the unlock switch. The present invention relates to a vehicle theft detection device that will not be stolen.

[Conventional technology]

In general, a theft detection device detects when a door or the like is opened by a means other than a key and determines theft. When the condition that all accessible openings and closing parts such as hatches, trunks, etc. are closed is satisfied in parallel, the device is set to the ready state (set state). If a door or an opening/closing part is opened by any means, it is determined to be trespassing (theft). Based on this information, a warning is issued by sounding the horn or flashing the headlights and taillights.

However, according to the theft detection device using the setting method described above, it is set even when the door lock device is locked and the door is closed from inside the vehicle, so it is impossible to leave the vehicle outside the vehicle with the door lock device locked from inside the vehicle. There was an inconvenience that when the door was opened to leave, the theft detection system was activated and an alarm was issued.

Further, according to the above-described theft detection device, theft is not determined when the door lock device is unlocked by means other than the key, but theft is determined only when the door or the like is opened. Therefore, if a door, etc. is opened while the open/close detection switch, etc. that detects the open/closed state of the door, etc. is prevented from operating by some means, there is the inconvenience that the theft detection will not be activated, resulting in reliability problems. Ta.

Therefore, the present inventor developed a theft detection device as shown in Japanese Patent Application No. 59-102839. That is,
At least for the driver's or passenger's door, after the door lock device of the door is in the locked position,
The door opening/closing knob on the outside of the vehicle is keyless lockable and locked by holding it in the open position and closing it, and includes an ignition switch off signal, at least one open signal of the keyless lockable door, and all door locking devices. After the locking signal is input, at least one of the door and opening/closing part open signal and the door lock device unlock signal is input under the condition that this lock signal is continuously input. It is determined that the item is stolen. The relationship between the lock detector and the key unlock detector has a conceptual configuration as shown in FIG. That is, the door lock device 11 provided on the door 10 is connected via a link mechanism 12 to a door lock knob 13 for manual operation, via a link mechanism 14 to an electromagnetic lock solenoid 15, and further via a link mechanism 16 to an electromagnetic lock solenoid 15. door key cylinder 1
7, respectively. Solenoid 15
is adapted to be driven by an electromagnetic lock switch 18. Further, the door lock device 11 includes the door lock knob 13 and the electromagnetic lock switch 18.
Alternatively, by operating any one of the door key cylinders 17, the doors can be locked or unlocked independently. In addition, the link mechanism 16
The arm 16a is pivotally supported by a pivot 16b, and its tip is connected to a door key cylinder 17 via an arm 16c. Further, an unlock detector 6a consisting of a limit switch is arranged below the arm 16a. The state in Figure 3 is
This shows the state when the arm 16a is in the neutral position, and at this time the key hole 17a of the door key cylinder 17 is in the state shown in FIG. 4A. When unlocking the door lock device 11 with a key, insert the key into the key hole 17a and turn it to the state shown in FIG. 4B, and the arm 16a swings in the direction of the arrow 19 shown in FIG. 3 via the arm 16c. As a result, the movable piece 20 of the limit switch is displaced to the position shown by the dotted line in the figure, and the limit switch detector 2
When 1 is pressed, a key unlock signal is output.

When this key unlock signal is output, the theft detection device is released.

However, in the case where the unlock detector is activated using such a link mechanism, when the key cylinder 17 is pulled out from the outside of the door 10, the arm 16c of the link mechanism 16 is inserted through the hole through which the key cylinder 17 was pulled out. It will be completely visible. Therefore, by pushing down this arm 16c with a finger or other tool, the link mechanism 16 is activated, and the arm 16a presses the movable piece 20, and the unlock detector 6a is activated, as if by a key. There was a problem that the theft detection device was essentially useless as the lock remained unlocked.

Therefore, in recent years, a structure in which a key unlock switch is built into a key cylinder without using such a link mechanism has been devised. This is configured so that the key unlock switch is turned on by inserting the key into the key cylinder and turning it. That is, the key unlock switch has the same structure as the unlock detector using the limiter switch described above by short-circuiting two lead wires with a key.

[Problem that the invention attempts to solve]

However, even if such a key unlock switch is built into the key cylinder, when the key cylinder is pulled out from the outside of the door, the lead wire connected to the key unlock switch inside the key cylinder will come out as well. Put it away. Therefore, by cutting this lead wire and short-circuiting the two lead wires, the unlock switch can be turned on and the theft detection device can be released.

As described above, the conventional theft detection device has the problem that it is completely useless when the key cylinder is pulled out from the outside of the door and the unlock switch is activated.

〔the purpose〕

The purpose of the present invention is to make it impossible to release the theft detection device even if the key cylinder with a built-in key unlock switch is pulled out from the outside of the door.

[Means for solving problems]

This invention provides a removable connector in the middle of the lead wire that connects the key cylinder with a built-in key unlock switch and the lock device, and fixes the connector on the lock device side to a clamp fixing member provided inside the door. .

[Effect]

In order to adopt such a structure, a connector is provided at the tip of the lead wire coming out from the locking device, and this connector is fixed to a clamp fixing member. The connector that fits into this connector is the connector at the tip of the lead wire coming out from the key cylinder. These connectors are normally fitted together, and the theft detection device is released by turning on the key unlock switch in the key cylinder. If you pull out the key cylinder from the outside of the door, the lead wire connected to the key cylinder will be pulled and the connector will come off. As a result, the lead wire of the switch cannot be reached, the key unlock switch cannot be turned on, and the theft detection device is not released.

〔Example〕

Examples of the present invention will be described below.

FIG. 1 shows an embodiment of the present invention.

FIG. 1A shows a state in which a key cylinder with a built-in key unlock switch is attached to a door outer panel.

In the figure, a key cylinder 1 is attached to a door outer panel 5, and a key unlock switch 2 is built into the key cylinder 1. Two lead wires 7 are connected to the key unlock switch 2, and a switch side connector 3 is connected to the tip of the lead wire 7.

On the other hand, a clamp fixing iron plate 6 is provided inside the door, and this clamp fixing iron plate 6 has the following features:
A connector 4 with a clamp is attached to which a lead wire 8 to which a locking device (not shown) is connected is connected. The switch-side connector 3 is fitted into this connector 4 with a clamp, and the lead wires 7 and 8 are connected via the connectors 3 and 4. The connectors 3 and 4 are configured to be detachable.

Ideally, the total length L of the lead wire 7 should be the same as the distance l ₂ between the key cylinder 1 and the connector 3, but considering dimensional variations and workability, L > l ₂ ...( 1) It has become. Further, the switch connector 3 is of a semi-lock type and is configured to be unlocked under a load of 5 kg. Even though the overall length L of the lead wire 7 has the relationship shown in equation (1), the lead wire 7 is
The dimension L is the distance from the door outer panel 5 to the inside of the vehicle l ₁ +
l Must be shorter than ₂ .

L<l ₁ +l ₂ (2) With this configuration, when the key cylinder 1 is pulled out from the outside of the door, the state as shown in FIG. 1B is obtained. That is, by pulling out the key cylinder 1, the lead wire 7 is pulled and the collector 3 comes off from the collector 4. In this state, if you ensure a sufficient distance _l2 , you can prevent the key cylinder from reaching the collector 4 through the hole from which you pulled it out, and the key unlock switch wire cannot be short-circuited, making it impossible to detect theft. The device will now operate normally.

In the present invention, the total length L of the lead wire 7 has the relationship l ₂ < L < l ₁ + l ₂ (3), but since l ₁ is usually about 30 mm, it is not possible to sufficiently absorb variations in the lead wire dimensions. can. Further, the pullout load of the lead wire and the lead wire side connector 3 is 10 kg or more, and when the key cylinder is pulled, it will not break midway and will always come off at the semi-locking connectors 3 and 4.

FIG. 2 shows another embodiment of the invention.

FIG. 2A shows the state in which the key unlock switch connector and the vehicle side connector are connected.

In the drawings, the same reference numerals as in the embodiment shown in FIG. 1A indicate the same parts and the same functions. This embodiment differs from the embodiment shown in FIG. 1A in that a large number of holes 9 are provided in the iron plate 6 for fixing the clamp.

In the figure, T is the distance between the outer plate and the center hole 9i of the clamp. If the design value of the length of the lead wire (including the key cylinder) is T and the manufacturing variation is α, then the dimensions of the lead wire are T±α (4). The distance from the center hole 9i of the clamp fixing iron plate 6 to the outermost holes 9i ₁ and 9ij is α.

By making the clamp fixing iron plate 6 have multiple holes in this way, when the connectors 3 and 4 are connected, it is possible to clamp the connector 4 in the optimal hole where the most tension is applied, no matter where the clamp is placed. .

If the key cylinder is pulled out under tension in this way, the connector 3 will be reliably disconnected against the movement of the key cylinder 1 by the length _l1 , as shown in FIG. 2B.

[Effect of idea]

As explained above, according to the present invention, even if an attempt is made to release the theft detection device by pulling out the key cylinder with a built-in key unlock switch from the outside of the door, the connector will come off and the lead wire will be cut midway. Therefore, the theft detection device cannot be released.

Therefore, according to the present invention, when an attempt is made to open or close the door using a means other than the key, the theft detection device can be operated normally.

[Brief explanation of drawings]

FIGS. 1A and 1B are configuration diagrams showing an embodiment of the present invention,
Figures 2A and B are block diagrams showing other embodiments of the present invention, Figure 3 is a block diagram of an unlock detector using a conventional link mechanism, and Figures 4A and B are the operations shown in Figure 3. FIG. 1...Key cylinder, 2...Unlock switch, 3...Switch side connector, 4...Connector with clamp, 5...Door outer plate, 6...Iron plate for fixing the clamp, 7, 8...Lead wire, 9...hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The locking device is activated by a locking signal from a door locking device installed on a door that can be entered into the vehicle, and the unlocking switch is activated by inserting and rotating the key into the key cylinder. In a car theft detection device that issues an alarm when the key cylinder is activated, the lock device is released, and the lock is unlocked by a method other than a key, a removable connector is installed in the middle of the lead wire that connects the key cylinder and the lock device. A theft detection device for an automobile, characterized in that one connector is fixed to a clamp fixing member provided inside the door, so that the connector part is detached when the key cylinder is pulled out from the door outer panel. . (2) In the invention set forth in claim 1 of the utility model registration claim, the clamp fixing member is provided with multiple holes, and the connector is fixed by preventing the lead wire between the connector and an unlocking switch provided on the key cylinder from becoming loose. An automobile theft detection device characterized in that it can be fixed in a position where it would otherwise be impossible to detect theft.