JPH064134Y2 - Day tent switch for automatic vehicles - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a detent switch for an automatic vehicle that detects that a shift lever of an automatic vehicle is located at a parking position.

[Conventional technology]

Recently, there have been a lot of runaway accidents of vehicles equipped with an automatic transmission. A park lock shift lock system is used to prevent this runaway accident. The park lock / shift lock system locks the shift lever so that it does not move from the parking position unless the driver steps on the brake pedal, and the engine key can be attached and removed only when the shift lever is in the parking position. Together with this, it is a system that allows the engine to be started. In the park lock shift lock system, the position is detected by the micro switch hitting the detent pin when the shift lever is in the parking position. In addition, 57-
As a similar technique, Japanese Laid-Open Patent Publication No. 144130 discloses a shift lever park position detecting device.

[Problems to be solved by the invention]

The conventional micro switch that detects when the shift lever is in the parking position is a switch that turns on and off one electric circuit, and cannot open and close a plurality of electric circuits. In addition, the microswitch suffers from rattling and durability due to the impact of the detent pin.

[Means for solving problems]

A switch case installed on the detent plate of an automatic vehicle and one tip end of the switch case protrudes from the switch case, and is arranged at a position where it is pressed by the detent pin when the shift lever is in the parking position, and the other end. An L-shaped working shaft having a central portion and a central portion pivotally supported by the switch case and the lid member, a movable plate locked with the L-shaped working shaft in the switch case, and having a movable contact piece inserted thereinto, The above-mentioned problem is solved by being constituted by a spring interposed between the movable plate and the switch case and inserted into the L-shaped action shaft.

[Action]

When the shift lever is set to the parking position, the detent pin hits and pushes the L-shaped action shaft protruding from the switch case. The L-shaped action shaft moves in a state of being axially supported by the switch case and the lid member, and therefore moves without rattling. When the L-shaped action shaft moves, the movable plate having the movable contact piece and locked to the L-shaped action shaft moves in the switch case. On the movable plate, a plurality of movable contact pieces that slidably contact fixed contacts provided on the inner wall of the switch case are supported symmetrically. A plurality of contact portions can be provided on the movable contact piece to open and close a plurality of electric circuits.

〔Example〕

Hereinafter, a structure of a detent switch for an automatic vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 is a detent plate mounted on an automatic vehicle, and forms a groove 1a in which a detent pin 2 is locked. The detent pin 2 is a push button 4 of the shift lever 3.
In order to lock the shift lever 3. The detent pin 2 is an abutment portion 7 of the L-shaped working shaft 6 of the detent switch 5 attached to the detent plate 1 in the parking position as shown in FIG.
Hit on. In FIG. 2, a parking position, a reverse position, a drive position, a drive position, a first position, and a second position. L-shaped working shaft 6
Supports the central portion on the bearing portion 8a of the switch case 8,
One tip portion projects from the switch case 8 and the abutting portion 7 is fixed, and the other tip portion is pivotally supported by the lid member 9. The L-shaped action shaft 6 includes a step portion 6a for locking the movable plate 10 and a retaining ring 1 in the switch case 8.
The convex portion 6b for fixing 1 is formed. The moving distance of the L-shaped action shaft 6 is such that the movable platen 10 locked to the L-shaped action shaft 6 contacts the bearing portion 8a of the switch case 8 and the L-shaped action shaft 6 is stopped by the stopper portion 8b of the switch case 8. It is up to the position to hit. Switch case 8
Fits the projections 8c and 8d into the positioning holes (not shown) formed in the detent plate 1 and setscrews (not shown)
Is attached to the detent plate 1 by screwing the screws into the screw holes 8e and 8f. The switch case 8 has a substrate 14 having a fixed contact 13 therein. Reference numeral 8g is a cover mounting portion which projects on both sides of the L-shaped action shaft 6, blocks rotation of the L-shaped action shaft 6, and locks the cover 12 of the L-shaped action shaft 6. The lid member 9 is a bearing member of the L-shaped action shaft 6, and is fitted to the switch case 8 by engaging the claw 9 a with the hole 8 h of the switch case 8. The movable platen 10 is inserted into the L-shaped action shaft 6 and is fixed by the step portion 6a and the retaining ring 11 fitted to the convex portion 6b of the L-shaped action shaft 6. The movable platen 10 is constantly pressed by the spring 16 via the movable contact piece 15 and is in contact with the retaining ring 11. The fixed contacts 13 are conductive plates of a rectangular shape having a desired length, which are embedded in the substrate 14, and a plurality of fixed contacts 13 are arranged side by side on the substrates 14 arranged on the left and right in the switch case 8. The fixed contact 13 is connected to a cord 18 via a terminal 17. The board 14 is fixed to both side surfaces of the switch case 8. The movable contact piece 15 is inserted into the movable platen 10 and is pressed against the flange portion 10 a of the movable platen 10 by the spring 16. The movable contact piece 15 includes a substrate 14 and a fixed contact 1.
3 has a plurality of contact portions 15a which are in sliding contact with each other on the left and right sides. 15b engages with the square-shaped collar portion 10a of the movable plate 10,
It is a projecting piece for preventing the movable contact piece 15 from rotating. One of the springs 16 is inserted into the bearing portion 8 a formed to project inside the switch case 8, and the other is inserted into the movable plate 10 to be attached. The terminal 17 is fixed to the substrate 14, penetrates between the switch case 8 and the lid member 9, and projects to the outside of the switch case 8. The cord 18 is hugged and fixed to the switch case 8 by a cord fixing member 19.

The detent switch for an automatic vehicle according to the present invention is constructed as described above, and its operation will be described in detail below.

When the shift lever 3 is in a position other than the parking position, the detent pin 2 is not in contact with the abutting portion 7.
The L-shaped action shaft 6 is in a position in contact with the stopper portion 8b of the switch case 8 because the movable platen 10 that is locked is pressed by the spring 16. Therefore, the movable contact piece 15 contacts the fixed contact 13 and is turned on.

The push button 4 of the shift lever 3 is pressed, the shift lever 3 is moved to the parking position, and the push button 4 is released. Then, the detent pin 2 rises and pushes the hitting portion 7 from below. The L-shaped action shaft 6 rises when the fixed abutting portion 7 is pushed up, and stops when the movable plate 10 abuts on the bearing portion 8a of the switch case 8. The L-shaped action shaft 6 moves without rattling because the L-shaped action shaft 6 is pivotally supported by the bearing portion 8a of the switch case 8 and the lid member 9 at two locations. Further, the movable platen 10 mounted on the L-shaped action shaft 6 has the movable contact pieces 15 inserted in the movable platen 10 symmetrically arranged in a plurality of leg shapes and having a contact portion 15a. Then, since the contact portion 15a slides on the surface of the substrate 14, the movable platen 10 moves stably without backlash. The contact part 15a is turned off by moving. Since the movable contact piece 15 forms the plurality of contact portions 15a, it is possible to open and close a plurality of electric circuits.

[Effect of device]

The automatic vehicle detent switch according to the present invention has the following effects.

Since the L-shaped action shaft that moves linearly is provided and the movable plate is locked to the L-shaped action shaft, the movement of the L-shaped action shaft pushed up by the detent pin can be directly transmitted to the movable plate. Therefore, the contact position of the contact can be set accurately. Since the L-shaped working shaft is supported at two places, the bearing part of the switch case and the lid member, the movable platen moves without rattling. The movable board is fitted with a plurality of leg-shaped movable contact pieces having contact points that are in constant contact with the substrate,
Moreover, since it is inserted in the L-shaped action shaft, it moves stably in the switch case without rattling. Since the movable contact piece is fixed by being inserted into the movable plate and pressed by the spring, it is easy to assemble. As described above, in the present invention, the L-shaped working shaft is provided, so that the structure is simple and durable, and the positioning work when mounting the switch case on the detent plate is easy.

[Brief description of drawings]

1, 2 and 3 are drawings showing an embodiment of a detent switch for an automatic vehicle according to the present invention. FIG. 1 is a side view of a cross section of a main part, and FIG. 2 is a detent. FIG. 3 is a front view showing a main part of a switch mounted state, and FIG. 3 is a side view showing a mounted state of the detent switch. 1 ... Detent plate, 2 ... Detent pin, 3 ... Shift lever, 5 ... Detent switch, 6 ... L-shaped action shaft, 8 ... Switch case, 9 ... Lid member, 10 ... Movable board,
13 ... Fixed contact, 14 ... Board, 15 ... Movable contact piece

Claims (1)

[Scope of utility model registration request] 1. A switch case installed on a detent plate of an automatic vehicle, and one end portion of the switch case protruding from the switch case and arranged at a position to be pressed by a detent pin when a shift lever is located at a parking position. And an L-shaped working shaft whose other end and center are pivotally supported by the switch case and the lid member, and which is locked to the L-shaped working shaft in the switch case,
A detent switch for an automatic vehicle, comprising a movable plate having a movable contact piece inserted therein, and a spring interposed between the movable plate and the switch case and inserted into the L-shaped action shaft.