JP2000160887A - Locking and unlocking detection switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prolong the life of a detection switch by eliminating chattering of a contact. SOLUTION: As the detection switch is set up so as to contact and separate the contact portion by fitting a rotor 8 having a cam 17 into the rotating section 10 of a cylinder lock 2 operated by a key 3 and by pressing one contact of the contact portion provided in opposition by the cam 17 of the rotor 8, chattering does not occur and the contact portion does not wear due to slide friction, and the switch lasts long.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch for detecting lock and unlock of an automobile door.

[0002]

2. Description of the Related Art Conventionally, a door lock for an automobile is connected to a lock.
The detection switch for detecting the locked or unlocked state of the door and sending out a signal for displaying on a display lamp has a structure in which a contact portion slides. This will be described below with reference to FIG. FIG. 5 is a partially sectional view of a side view showing a state in which a conventional lock switch for detecting lock and unlock is connected to a lock of an automobile door. In FIG.
1 is a detection switch. 2 is a separate cylinder lock, and 3 is a key. Reference numeral 4 denotes a pair of connecting arms extending from both sides of the case 5 of the detection switch 1 and having a connecting portion 7 which is fitted with a connecting receiving portion 6 provided on a side surface of the cylinder lock 2. Be linked. Reference numeral 8 denotes a rotor. Reference numeral 9 denotes a connecting portion provided on the rotor 8. 11
Is a waterproof O (O) ring between the case 5 and the rotor 8. Reference numeral 12 denotes a leaf spring provided on the back surface of the rotor 8 and has a contact 13 at the tip. Reference numeral 14 denotes a lock / unlock pattern (contact point) provided on the printed circuit board 15, and reference numeral 16 denotes a link which is connected to the rotating portion 10 and rotates together with the rotating portion 10. The link 16 is a door lock (not shown). It is connected to buttons and the like. The conventional switch for detecting lock and unlock is configured as described above, so that each time the key 3 is operated, the contact portion (leaf spring 12) is operated.
, And a lock / unlock pattern provided on the printed circuit board 15).

For this reason, the lock / unlock pattern 14
When the rotor 8 rotates, there is a problem that chattering occurs due to the steps and gaps between the conductor portion and the insulating portion, and a contact portion (provided on the leaf spring 12) due to sliding. The contact 13 and the lock / unlock pattern provided on the printed circuit board 15 were severely worn, and the life of the detection switch 1 was shortened.

[0004]

As described above, in the conventional switch for detecting lock and unlock,
Since the contact portion slides, chattering occurs and wear is severe. When the switch is mounted on an automobile door, the life of the detection switch 1 is shorter than the service life of the automobile. There was a disadvantage that 1 had to be replaced halfway.

An object of the present invention is to pay attention to this point, and to reduce the wear of the contact portion to extend the life and to provide a switch structure in which chattering does not occur, so that the detection switch 1 does not need to be replaced halfway. And a detection switch for detecting unlock.

[0006]

According to the first aspect of the present invention, a rotor having a cam is fitted to a rotating portion of a cylinder lock operated by a key. This can be achieved by pressing one of the contact portions of the contact portion provided facing the rotor cam to make the contacts conductive. In the invention according to claim 2, the cam can be achieved by providing the cam on the back surface of the rotor. According to the invention of claim 3, the cam can be achieved by providing the cam on the outer peripheral surface of the rotor.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view for explaining a first embodiment of the present invention, and is a partial cross-sectional side view showing a state where a detection switch for detecting lock and unlock is connected to a lock of an automobile door. FIG. 2 shows A-
FIG. 1 and 2, reference numeral 22 denotes a detection switch. 2 is a separate cylinder lock, and 3 is a key. Reference numeral 4 denotes a pair of connecting arms extending from both sides of the case 5 of the detection switch 22. The connecting arm 4 is provided with a connecting portion 7 near the distal end, and the connecting portion 7 is connected to the cylinder lock 2.
Is fitted and connected to the connection receiving portion 6 provided on the side surface of the first member. In this embodiment, the connecting portion 6 is provided as a convex portion on the side surface of the cylinder lock 2 and the connecting portion 7 is formed as the same through hole. The part 6 may be an identical through hole or an identical bottomed hole. 8
Is a rotor of the detection switch 22, and 9 is a coupling portion provided on the rotor 8, which is fitted with the rotating portion 10 of the cylinder lock 2, and has a structure in which the rotor 8 is rotated by turning the key 3. I have. Reference numeral 11 denotes a waterproof O (O) ring between the case 5 and the rotor 8. Reference numeral 16 denotes a link that is connected to the rotating unit 10 and that rotates together with the rotating unit 10. The link 16 is connected to a door lock button (not shown) or the like. 17 is a cam provided on the back of the rotor 8. Reference numeral 18 denotes a contact plate having a contact 19 at the tip. When a key is operated and the rotor 8 rotates, the cam 17 moves in the direction of arrow B or C (FIG. 2), and is pressed by the cam 17. When the contact plate 18 is pressed, the contact 19 is pressed against the lock / unlock pattern 21 provided on the printed circuit board 20 to turn on an unillustrated display lamp or the like. 31 is a filler and 23 is an electric wire. As described above, in the first embodiment, the cam is provided on the back surface of the rotor 8, and the cam presses the contact plate 18 provided on the fixed side, so that the contact portion is brought into contact with and separated from the rotor 8. Chattering does not occur, and the contact portion does not wear due to sliding friction, so that the life of the detection switch 22 can be extended.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a view for explaining a second embodiment of the present invention, and is a partial cross-sectional side view showing a state where a detection switch for detecting lock and unlock is connected to a lock of an automobile door. FIG. 4 is a diagram showing an arrow of a cross section in FIG. 3D-D. 3 and 4, reference numeral 24 denotes a detection switch. 2 is a separate cylinder lock, and 3 is a key. Reference numeral 4 denotes a pair of connecting arms extending from both sides of the case 5 of the detection switch 24. The connecting arm 4 has a connecting portion 7 near the tip.
The connecting portion 7 is fitted and connected to the connecting receiving portion 6 provided on the side surface of the cylinder lock 2. In this embodiment, the connection receiving portion 6 is provided on the side surface of the cylinder lock 2 and the connecting portion 7 is formed as a through hole having the same shape. It may be an identical through hole or an identical bottomed hole. Reference numeral 16 denotes a link that is connected to the rotating unit 10 and that rotates together with the rotating unit 10. The link 16 is connected to a door lock button (not shown) or the like. 23a is a ground wire, and 23b is a lock / unlock wire. Reference numeral 25 denotes a rotor of the detection switch 24, which is formed in a cylindrical shape. The rotor 25 is configured to rotate by turning the key 3 as described above. 26
Is a cam provided on the outer periphery of the rotor 25, and 27 is the first cam.
Reference numeral 28 denotes a contact provided at the tip of the contact plate 27, and reference numeral 29 denotes a lock / unlock contact plate provided to face the first contact plate 27.

In the detection switch 24 constructed as described above, when the key 3 is operated and the rotor 25 rotates, the cam 26 moves in the clockwise direction or the counterclockwise direction (FIG. 4), and The contact plate 27 is pressed. As a result, the contact 28 comes into contact with the lock / unlock contact plate 29 and becomes conductive, so that an indicator lamp (not shown) is turned on. 30 is a back cover, and 31 is a filler. As described above, in the second embodiment, the cam 26 is provided on the outer periphery of the rotor 25, and the cam 26 presses the first contact plate 27 provided on the fixed side, so that the contact portions come into contact with and separate from each other. Because of the structure, the contact portion does not wear due to sliding friction and the life of the detection switch 24 can be extended.

[0010]

According to the present invention, a rotor having a cam is fitted to a rotating portion of a cylinder lock operated by a key, and one contact of a contact portion provided opposite to the cam is pressed by the cam of the rotor. By making the contacts conductive,
Since the contact portions are configured to be separated from each other, chattering does not occur due to sliding of the contact portions, and the contact portions do not wear due to sliding friction, and the life of the detection switch 24 can be extended. . Thus, a detection switch having a longer life than the service life of the vehicle can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded cross-sectional view of a main part for describing a first embodiment of the present invention.

FIG. 2 is a diagram showing an arrow of a cross section taken along line AA of FIG. 1;

FIG. 3 is an exploded cross-sectional view of a main part for describing a second embodiment of the present invention.

FIG. 4 is an arrow view of a cross section taken along line CC of FIG. 3;

FIG. 5 is a partial sectional view of a side view showing a state in which a conventional lock switch for detecting lock and unlock is connected to a lock of an automobile door.

[Explanation of symbols]

 1, 22, 24 Detection switch 2 Cylinder lock 3 Key 4 Connection arm 5 Case 6 Connection projection 7 Connection section 8, 25 Rotor 9 Connection section 10 Rotating section 11 O-ring 12 Plate spring 13, 19, 28 Contact point 14 , 21 Lock / unlock pattern 15, 20 Printed circuit board 16 Link 17, 26 Cam 18 Contact plate 27 First contact plate 29 Lock / unlock contact plate 30 Cover 31 Filler

Claims (3)

[Claims] 1. A rotor having a cam is fitted to a rotating portion of a cylinder lock operated by a key, and one contact of a contact portion provided facing the cam is pressed by the cam of the rotor to make the contact conductive. A lock and unlock detection switch, characterized in that the switch is operated. 2. The lock and unlock detection switch according to claim 1, wherein the cam is provided on a back surface of the rotor. 3. The lock and unlock detection switch according to claim 1, wherein the cam is provided on an outer peripheral surface of the rotor.