JPS5842112A - Horn switch for steering wheel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a horn switch for a steering wheel of an automobile.

In contrast to the conventional horn switch, the contact plate is guided by a plurality of tomouchi plates and moved up and down directly on the contact sheet, and the m point of the contact plate and the contact point of the contact sheet are brought into contact and energized. I honked the horn.

However, in order for the L1 contact plate to move up and down perpendicularly to the contact sheet by 100 cm, there is no choice but to use a single flat surface of the horn butane attached to the contact plate.

Recently, when installing a horn button tube in the spokes of a steering wheel, from a design point of view, it is desirable that there be a small gap between the outer surface of the horn button and the spokes. It was essential to eliminate vibration in directions other than the operating direction.

In view of the above-mentioned points, this invention aims to reduce vibrations in directions other than the operating direction of the horn butane by configuring the working surface of the horn butane with two or more surfaces that intersect with each other when the horn is operated. To provide a steering wheel horn switch pipe that can be minimized.
t purpose.

ζOSummary of the invention Twist: Above the contact sheet having a contact point at one end, an insulator is pivotally attached to the other end of the contact sheet at two or more places with the coil fully valved, and the contact point corresponds to the contact point of the contact sheet. A contact plate having a diameter is attached to the insulator, and a horn button is attached to the contact plate to rotate the insulator and the contact plate against the biasing force of the filler screw to bring the contacts of the contact plate and the contact sheet into contact with each other. The installed configuration consists of a horn switch on the steering wheel.

Hereinafter, one embodiment of the present invention will be explained based on the illustrated example. I will explain.

This embodiment [2, j11/As shown in the figure, the horn switch is installed in the spoke part /a of the steering wheel l near the ring part /'b where the cross-sectional area becomes small. Fig. A-A sectional view of Fig. 1, No. 3
Figure #im2 is a partially exploded perspective view of Figure #im2.

A set plate 3 is fixed to the core metal of the spoke part /a, and on the set plate 3 there is a convex part J at the tip of the spoke part /a.
&Yt Insert contact sheet 4 into mounting hole 4ca!
is provided. The lower cover 9 is fixed to the contact plate 3 by screws 10 from the bottom surface of the lower cover 9.

In addition, guide holes d'b and +'b are provided near both ends of the center of the contact sheet, and retaining plates <te and +e that are bent at the rear end and facing each other are formed, and the retaining plate 4Ie is provided with guide holes d'b and +'b, respectively. A shaft hole IIa is provided. Then, a support rod 4b is pivotally connected to the shaft hole pc of the mount seat via a protrusion 45L), and a guide rod is inserted into the guide hole ≦
Insulators 6 made of synthetic resin, such as dahliacetal, each having a number 0 formed thereon, are provided above the contact sheet via a coil bar.

The coil bar is attached to the spring holding protrusion 6a of the insulator T of company J, and is biased to separate the insulator B from the contact sheet in the counterclockwise direction in the figure, centering on the protrusion 4FL of the support rod 4b. However, when assembling the insulator 6 to the contact sheet, by attaching the spacer 1/ to the lower surface of the guide rod 6C with a screw, and bringing the upper surface of the spacer 1 into contact with the lower surface of the contact sheet, The movement 1B of separating the insulator 4 is restricted.

A contact plate 7 is provided on the upper surface of the insulator 4, and m
The insulator 4 and the contact plate 7 are fixed to the horn button l by t' This is the contact point of the 7dFi contact plate 7, and the contact point l! provided on the contact sheet reference.
It is provided to correspond to d.

The horn button #ti is made of synthetic resin such as ABSl resin, and has a shape of working surfaces la and jb that intersect with each other φ, and a mounting part into which a screw l- is screwed onto the back surface of the working surface tb. ZC is formed.

Next, a method for assembling this embodiment will be explained.

First, a filler S is cast onto the insulating material through the retaining protrusions 6d, and the protrusions 4a and 4a of the support rods ab and ib are inserted into the shaft holes o*l shown in the contact sheet.

The guide rod 60. Insert the guide hole 4I'b of the tCt contact sheet into the guide hole 4I'b, and attach the spacer 11 to the bottom of the guide rod 6C with a screw.

Then, place the contact plate 7 on the upper surface of the insulator 6 (Ul#E), insert the screw L- into each mounting hole 4e +70, attach the insulator to the mounting part I0 of the horn button L, and attach the contact plate 7, and integrally install the horn button 11 contact plate 7, the contact plate 11A4, and the contact sheet 1.

After that, by inserting the convex part 3& of the plate F into the mounting hole a of the contact sheet and fixing it with screws 10 from the lower surface through the lower cover plate, it can be assembled to the spoke part /a of the steering wheel. .

Therefore, in this embodiment, as shown in FIG.
No matter which one of the action surfaces Ia or Irb of the horn button L is pressed, contact plate 7 with the pivot point as the fulcrum is pivoted to insulator 4# contact sea) 4C to which contact plate 7 is attached. The coil spring j is compressed by the rotation of the insulator 6, and the contacts 7d and d come into contact and become energized (Fig. 4).The horn is sounded, and the contact plate 7 Since the insulator B to which the B is attached is pivoted at two points on the tactile seat, when the horn is activated, it is possible to suppress left and right vibrations of the horn button B (Fig. 3) in directions other than the operating direction of the horn button L. . In addition, when assembled to the spoke part /a, the horn switch can be formed compactly by fitting the retaining plate pe of the contact F and the support rod ≦b of the insulator into the recess ld on the back surface of the spoke part /a.゛It can be installed sufficiently in the spoke parts near the ring part where the cross-sectional area is small.

As described above, the insulator to which the contact plate is attached is pivotally connected to the touch seat via the coil spring, and the insulator and the contact plate are rotated against the biasing force of the coil spring. The horn button is attached to the contact brage, and when the horn is activated, the contacts of the contact plate are pivoted to the contact sheet of the insulator. Since it rotates using the point as a fulcrum and makes contact with the contact point of the contact sheet,
By configuring the operating surface of the horn button to include two or more surfaces that intersect with each other, it is possible to improve the degree of freedom in design of the steering wheel. Also, contact)
Since the insulator that attaches the contact sheet is pivoted at two or more locations on the contact sheet, it has the effect of minimizing OJ noise other than in the operating direction of the horn button.

[Brief explanation of the drawing]

WJ Moriki shows an embodiment of the horn switch of the steering wheel of the present invention, and WJ is a steering wheel #O.
Plan view, No. λl! Figure 1 is an A-A sectional view of Figure 1, Figure 3 is an exploded perspective view of the voice part of Figure 2, Figure 4 is an assembled perspective view of the main parts of the embodiment, and Figure 4 is the horn during operation. It is a figure which shows the state S of this in order. Reference: Contact sheet, j: Coil spring, ≦・
... Absolute 11A, 7-... Contact play), l...
Horn l tongue, I a + t b...action surface. Patent applicant Toyoda Gosei Co., Ltd. 15'! s1 Figure JIZ diagram

Claims (1)

[Claims] Above the contact sheet having a contact point at one end, insulators are pivotally attached to the coil through screws at two or more places on the other layer of the contact sheet, and the contact plate has contact points corresponding to the contacts of the contact sheet. is attached to the insulator and further rotates the insulator and the contact plate against the biasing force of the coil plate to bring the contacts of the contact plate and the contact sheet into contact with each other. A steering wheel horn switch with a configuration attached to a contact plate.