JPH0528663Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a vehicle door switch device that is turned on and off in response to opening and closing of a vehicle door.

(Prior Art) In a conventional door switch device, when the vehicle door is opened and the pushing force on the rod is gradually removed, a contact terminal fixed to the rod comes into contact with a fixed contact part provided on a bracket and turns on. The contact terminal is configured to separate from the fixed contact portion and turn off when the door is closed and a pushing force is applied to the rod. In order to reduce costs, conventional products use materials such as copper, brass, nickel, zinc, and iron, which have relatively low conductivity and are not desirable as contact materials, such as copper, brass, nickel, zinc, and iron. Therefore, the shape of the contact part is made V-shaped so that there is a slight sliding movement when the contact parts come into contact with each other, but due to switching, the contact part wears out and comes into contact with the surface. ,
Since they no longer slide, the contact terminal and the fixed contact section function as a so-called opposed contact type switch.

(Problem to be solved by the invention) In this way, in the conventional device, the contact terminal and the fixed contact part act as an opposing contact type switch, but in the case of a door switch device, the contact terminal and the fixed contact part Because these contact terminals and fixed contact parts are exposed, dirt, dust, oil, etc. tend to adhere to them, and carbonized insulators from switching adhere to them, resulting in poor contact and low durability. It was hot.

Therefore, an object of the present invention is to provide an extremely simple structure in which the inclined contact portion of the contact terminal can reliably slide into contact with the fixed contact portion having an inclined surface when turned on, and thereby To provide a vehicle door switch device which can prevent defects as much as possible.

[Structure of the invention] (Means for solving the problem) The present invention includes a bracket that is fixed to the body of a vehicle and has a guide hole and a support hole formed therein, and a bracket that is inserted into and supported by the guide hole and the support hole. A movable rod is provided, which is capable of reciprocating between a first position and a second position in response to opening and closing of the door, and is capable of rotating slightly around the axis; The first corresponding to the open position of the door
a coil spring that applies a spring force to move the movable rod in the direction of the position of the movable rod and rotate the movable rod around its axis; and a sloped surface continuous with the edge of the support hole in the bracket. and a contact terminal provided on the movable rod and having an inclined contact portion that protrudes in an outer circumferential direction and comes into contact with the fixed contact portion, When the movable rod is released, the movable rod is moved to the first position by the spring force of the coil spring in the direction of the first position, and in the process of the movement, the contact portion of the contact terminal is brought into contact with the slope portion of the fixed contact portion. and the contact portion is guided by the slope portion to move the contact point with the rotation of the movable rod, and in response to this when the door is closed, the movable rod is moved to a second position. The present invention is characterized in that the contact state is released while the movable rod is rotated back by the spring force in the rotational direction of the coil spring during the movement process.

(Function) According to the above means, when the door is opened, the movable rod is moved to the first position by the spring force of the coil spring in the direction of the first position, and in the process of movement, the movable rod is moved against the slope of the fixed contact part. Since the contact part of the contact terminal is brought into contact with the contact part of the contact terminal and the contact part is guided by the slope part, the contact point is moved with rotation of the movable rod, so that the contact part of the contact terminal and the slope part of the fixed contact part are moved. The contact terminal slides securely, and at this time, dirt, dust, oil, etc. adhering to the contact portion of the contact terminal or the fixed contact portion are removed, resulting in a reliable contact state.

(Example) An example of the present invention will be described below with reference to the drawings. 1 is a metal frame as a bracket fixed to the body 2 of an automobile as a vehicle with mounting screws 3, and this is manufactured by punching and bending a metal plate by press working. A support portion 5 bent at a substantially right angle is formed at one end of the base portion 4, and a receiving portion 6 bent at a substantially right angle is formed at the tip of the support portion 5. Base part 4
For example, an oval-shaped guide hole 7 is provided in the receiving portion 6, and a substantially circular support hole 8 is provided in the receiving portion 6. One end of the movable plastic rod 9 is provided in the guide hole 7, and the other end is provided in the support hole 8 in the axial direction. is slidably inserted into the hole. This movable rod 9 can be moved to the first position shown in FIG.
It is adapted to be moved back and forth between the second position shown in FIG. Further, the portion of the movable rod 9 corresponding to the guide hole 7 has an oval-shaped cross section, for example, and has a predetermined gap around the inner circumference of the guide hole 7. The structure allows for slight rotation in the direction of arrow E and the opposite direction. Note that the portion corresponding to the support hole 8 has a circular cross section. The tip of the movable rod 9 projects outward from the base portion 4 by a predetermined length when the door is open (first position), and in the direction of arrow A (second position) when the door is closed.
(in the direction of the position). A slit hole 10 extending in the axial direction and a rectangular hole 11 intersecting the slit hole 10 at right angles are formed at the other end of the movable rod 9.

A coil spring 12 wound around the outer periphery of the movable rod 9 has one end in contact with a stepped portion 9a provided at the intermediate portion of the movable rod 9, and the other end in contact with the receiving portion 6. 9 is biased in the opposite direction of arrow A, which is the first position direction. Further, as will become clear from the description below, this coil spring 12 moves the movable rod 9 in a direction around its axis (in a direction opposite to the direction of arrow E).
It is designed to be biased to rotate.

Reference numeral 13 denotes a contact terminal formed by punching a metal plate by press working, and one end thereof is inserted into a slit hole 10 formed in the movable rod 9, and the cut-out portion 13a is engaged with the rectangular hole 11. It is attached to the movable rod 9. contact terminal 1
A connecting portion 13b for attaching a connector (not shown) is formed at the other end of the connector 3, and inclined contact portions 14, 14 protruding toward the outer circumference are formed at the intermediate portion.

15, 15 are approximately V-shaped fixed contact parts formed in the receiving part 6 so as to correspond to the support hole 8; these are the contact parts 14, 15 of the contact terminal 13;
The supporting hole 8 has continuous inclined surfaces 15a, 15a and 15b, 15b provided at positions substantially corresponding to the supporting hole 14, respectively, and inclined so as to gradually move away from the outer periphery of the movable rod 9. and,
The angles between the inclined surfaces 15a and 15b and the reference line a passing through the center of the support hole 8 are α and β, respectively, and the angle α is set to be larger than the angle β. Also,
When the door is closed, the movable rod 9 releases the coil spring 12.
When the contact terminals 13 are pushed in the direction of the arrow A against the pressure, the contact portions 14, 14 of the contact terminals 13 are spaced apart from each other and are opposed to each other at substantially intermediate positions of the inclined surfaces 15a, 15a of the fixed contact portions 15, respectively.

Reference numeral 16 denotes a bag-shaped cover made of, for example, rubber, and is designed to cover the tip of the movable rod 9 and the surface of the base portion 4.

Next, the operation of the above configuration will be explained. When the door (not shown) is closed, the movable rod 9 is pushed through the cover 16 in the direction of arrow A against the coil spring 12 and is in the second position shown in FIG. Contact part 1
4 and 14 are spaced apart from the fixed contact portion 15 provided on the receiving portion 6 and are in an OFF state. In this state, as described above, the contact portion 14 of the contact terminal 13 is spaced apart from and facing the inclined portion 15a of the fixed contact portion 15, and is deviated from the reference line a by an angle γ. (3rd
(See Figure and Figure 4). On the other hand, when the door (not shown) is opened, the pushing force on the movable rod 9 is removed, so the movable rod 9 is moved to the second position of the coil spring 12.
It is moved back in the opposite direction of arrow A by the biasing force in the direction of the position. Then, first, contact terminal 1
Point b of the contact portion 14 of No. 3 is brought into contact with point c of the inclined surface 15a of the fixed contact portion 15 (see FIG. 4),
When the movable rod 9 is further moved in the opposite direction of arrow A, the contact portion 14 is guided by the slope portion 15a of the fixed contact portion 15, so that the movable rod 9 rotates around the axis (in this case, in the direction of arrow E). Accordingly, the contact point between the contact portion 14 and the fixed contact portion 15 changes from point b at the contact portion 14 of the contact terminal 13 in the direction of arrow B, and changes from point c at the inclined surface 15a of the fixed contact portion 15 in the direction of arrow B. The point d of the contact portion 14 of the contact terminal 13 finally reaches the fixed contact portion 1.
The point e of the inclined surface 15a of No. 5 is contacted.

When the contact part 14 of the contact terminal 13 and the fixed contact part 15 come into contact in this way,
These are electrically connected (turned on), and the contact terminal 13 is grounded to the body 2 via the frame 1.

When the movable rod 9 rotates in the direction of arrow E, a torsional force in the direction of arrow E is applied to the coil spring 12. As a result, the coil spring 12 receives a spring force (torsion) in the opposite direction to the direction of arrow E. power). For this reason, when the door (not shown) is closed again, the movable rod 9 is rotated back in the opposite direction of arrow E by the torsional force stored in the coil spring 12, so that the contact terminal 13
The positional relationship between the contact portion 14 and the fixed contact portion 15 is again shown by the solid line in FIG.

In the above configuration, the contact terminal 13 is provided with the inclined contact portion 14, and the fixed contact portion 15 is provided with the inclined contact portion 14.
Since the inclined surface 15a is provided at the slanted surface 15a, when the contact terminal 13 comes into contact with the fixed contact part 15, the contact terminal 13 slides from point b to point d with respect to the fixed contact part 15, and the fixed contact part 15 It slides against the contact terminal 13 from point c to point e. Therefore, dirt, dust, oil, etc. adhering to the contact terminal 13 and the fixed contact part 15 are removed by the sliding movement of the two, and the contact part 14 of the contact terminal 13 is removed from the fixed contact part 15. Reliable contact without contact failure.

In the above-mentioned embodiment, the bracket 1 was formed by bending the plate material into a substantially U-shape, but a cylindrical support portion was provided by drawing the plate material, and the support portion was The structure may be such that the movable rod is supported in the provided support hole and guide hole, or the bracket may be formed of plastic, and a conductive member made of a band-shaped metal plate having a fixed contact portion may be attached to the bracket. The structure may be such that the member is grounded to the body by contacting a screw that fixes the bracket to the body, and various modifications can be made.

[Effects of the invention] As is clear from the above explanation, the present invention has an extremely simple structure, but when turned on, the inclined contact portion of the contact terminal reliably slides with the fixed contact portion having an inclined surface. This has the excellent effect of making contact possible and preventing poor contact as much as possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a longitudinal sectional side view of FIG. 1 viewed from the direction of the arrow, and FIG. FIG. 4 is a cross-sectional side view showing the main parts, FIG. 4 is an operational explanatory view showing the main parts cut away in cross sections at right angles to each other, and FIG. 5 is a cutaway plan view of the main parts showing a different operating state from FIG. 4. In the drawing, 1 is a bracket, 2 is a body, 7 is a guide hole, 8 is a support hole, 9 is a movable rod, 12 is a coil spring, 13 is a contact terminal, 14 is a contact part, 15 is a fixed contact part, and 15a is an inclined part. It is a surface.

Claims (1)

[Scope of utility model registration request] A bracket is fixed to the vehicle body and has a guide hole and a support hole formed therein, and the bracket is inserted into and supported by the guide hole and the support hole, and is set to a first position and a second position according to opening and closing of the door. a movable rod that can reciprocate between positions and rotate slightly around its axis; and a spring that moves the movable rod toward a first position corresponding to the open position of the door. A fixing device comprising a coil spring that applies force and a spring force to rotate the movable rod around its axis, and a sloped portion that is continuous with the edge of the support hole in the bracket. a contact terminal provided on the movable rod and having an inclined contact portion that protrudes toward the outer circumference and comes into contact with the fixed contact portion; The movable rod is moved to the first position by a spring force in the direction of the position, and in the process of movement, the contact portion of the contact terminal is brought into contact with the sloped portion of the fixed contact portion, and the contact portion is brought into contact with the sloped portion of the fixed contact portion. When the door is closed, the movable rod is moved to the second position in response to the closing of the door, and in the process of the movement, the coil spring is A door switch device for a vehicle, characterized in that the contact state is released while the movable rod is rotated back by a spring force in the rotation direction.