JP3713157B2 - Automotive door open / close detection switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a detection switch for detecting locking and unlocking of an automobile door.
[0002]
[Prior art]
Conventionally, a detection switch that detects a locked or unlocked state of an automobile door and sends a signal for display on an indicator lamp has a contact portion that is directly connected to a lock of an automobile door and rotates and slides against it. It was a structure. For this reason, each time the key of the automobile door is operated, the contact portion (the convex contact provided on the leaf spring and the lock / unlock pattern provided on the printed circuit board) greatly slides in contact with the printed circuit board. There is a problem that chattering occurs when passing through the steps or gaps of the lock / unlock pattern, and the contact part (the convex contact provided on the leaf spring and the printed circuit board provided by pressure contact sliding) The wear of the lock / unlock pattern) was severe and shortened the life of the detection switch.
[0003]
[Problems to be solved by the invention]
As described above, the conventional detection switch for detecting lock and unlock has a structure in which the contact portion slides in a large pressure, so that chattering occurs and the wear is severe, and it is attached to an automobile door. Since the life of the detection switch 1 is shorter than the service life of the automobile, there is a drawback that the detection switch 1 must be replaced in the middle.
[0004]
An object of the present invention is to replace the detection switch 1 in the middle by focusing on this point and reducing the wear of the contact portion to extend the life, to prevent chattering, and to prevent contact failure. It is an object of the present invention to provide a detection switch that detects unnecessary lock and unlock.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, in the invention of claim 1, a rotor having a cam is fitted to a rotating portion of a cylinder lock operated by a key, and the cam of this rotor is provided facing each other. the second pushing portion of further pressing after a first pressing portion that presses the one of the leaf spring of the pair of leaf springs from the rear has, is one of the leaf spring was in contact with the other plate spring is made conductive contacts There provided continuously, one plate spring can be achieved by very small amounts slide contact portions of the two leaf springs deflect the other leaf spring.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining a first embodiment of the present invention, and is a partially sectional exploded side view showing a state in which a detection switch for detecting locking and unlocking is connected to a lock of an automobile door. . FIG. 2 is a perspective view of the AA cross-sectional direction of FIG. 3 and 4 are diagrams showing in detail the operation of the contact portion of FIGS. 1 and 2. FIG.
1, 2, and 3, 1 is a detection switch, 2 is a separate cylinder lock, and 3 is a key. A pair of connecting arms 4 extend from both sides of the case 5 of the detection switch 1. Further, the connecting arm 4 is provided with a connecting portion 7 in the vicinity of the tip, and the connecting portion 7 is fitted and connected to a connecting receiving portion 6 provided on the side surface of the cylinder lock 2. In this embodiment, the receiving portion 6 for connection is provided as a convex portion on the side surface of the cylinder lock 2 and the connecting portion 7 is a through hole having the same shape. The part 6 may be a through hole having the same shape or a bottomed hole having the same shape. Reference numeral 8 denotes a rotor of the detection switch 1, which is formed in a cylindrical shape with the rotor of the detection switch 1, and has a structure in which the rotor 8 is rotated via the rotation unit 9 by turning the key 3. Reference numeral 10 denotes a link that is coupled to the rotation unit 9 and rotates together with the rotation unit 9. The link 10 is connected to a door lock button or the like (not shown). 11a is a ground wire, and 11b is a lock / unlock wire. 12 is a cam provided on the outer periphery of the rotor 8, 13 is one leaf spring, 14 is a contact point provided at the tip of the one leaf spring 13, and 15 is provided facing the one leaf spring 13. It is the other leaf | plate spring for lock / unlock detection. That is, one leaf spring 13 and the other leaf spring 15 are provided as a pair facing each other. Reference numeral 16 denotes a back cover, and reference numeral 17 denotes a filler for sealing the back side of the detection switch 1.
[0007]
In the detection switch 1 configured in this way, the cam 12 is rotated clockwise or counterclockwise (FIGS. 2, 3, and 4) when the key 3 is operated and the rotor 8 is rotated. Then, one leaf spring 13 is pressed. As a result, the contact 14 comes into contact with the other plate spring 15 for detecting unlocking and unlocking, thereby turning on an indicator lamp (not shown). As described above, in the first embodiment, the cam 12 is provided on the outer periphery of the rotor 8, and the cam 12 presses one leaf spring 13 provided on the cam side from the rear, so that the contact 14 is the other. The plate spring 15 contacts and conducts, but the cam plate 12 still rotates to further press one plate spring 13 to warp the other plate spring 15 and contact portions of a pair of plate springs with different support portions. Slides a small amount.
That is, the rotor 8 having the cam 12 is fitted to the rotating portion 9 of the cylinder lock operated by the key 3, and one of the plate springs 13 provided by facing the cam of the rotor By pressing from behind, the other leaf spring 15 is brought into contact (FIG. 3), the contact is made conductive, and then further pressed, and the other leaf spring 15 is warped (FIG. 4). By sliding a small amount, the contact is always polished.
[0008]
【The invention's effect】
As described above, 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 of a pair of leaf springs provided to face each other by the cam of the rotor. By pressing the leaf spring from the back to contact the other leaf spring and conducting the contact point, press further, warp the other leaf spring and slide the contact portion of the two leaf springs slightly, The contact part is a structure that contacts and separates, and the contact is always polished and there is no step, so chattering due to sliding of the contact part does not occur, and the contact part may wear due to sliding friction. Thus, the life of the detection switch 24 can be extended. Accordingly, a detection switch having a longer life than the service life of the automobile can be provided.
[Brief description of the drawings]
FIG. 1 is a partially sectional exploded side view for explaining an embodiment of the present invention.
FIG. 2 is a perspective view in the AA cross-sectional direction of FIG.
FIG. 3 is a diagram illustrating in detail the operation of the contact portion of FIGS. 1 and 2;
4 is a diagram showing in detail the operation of the contact portion of FIGS. 1 and 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Detection switch 2 Cylinder lock 3 Key 4 Connection arm 5 Case 6 Connection convex part 7 Connection part 8 Rotor 9 Turning part 10 Link 11 Electric wire 12 Cam 13 One leaf spring 14 Contact 15 The other leaf spring 16 Cover 17 Filling Agent

Claims (1)

A rotor having a cam is fitted to a rotating portion of a cylinder lock operated by a key, and the cam of the rotor presses one leaf spring of a pair of leaf springs provided facing each other from the rear. A pressing portion and a second pressing portion that is further pressed after the one leaf spring is brought into contact with the other leaf spring to make the contact conductive, and one leaf spring warps the other leaf spring. A switch for detecting the opening / closing of an automobile door, wherein a contact portion of two leaf springs is slid slightly.

Images