CN2434172Y

CN2434172Y - Horn contact device of steering wheel

Info

Publication number: CN2434172Y
Application number: CN 00212636
Authority: CN
Inventors: 周克正
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-17
Filing date: 2000-07-17
Publication date: 2001-06-13
Anticipated expiration: 2010-07-17

Abstract

The utility model relates to a horn contact device of a steering wheel, which belongs to a warning mechanism for steering wheels of automobiles. The utility model can be used for the automobiles, engineering vehicles, cars and tractors. The utility model comprises bottom plates, a conducting ring and a contact, wherein, two sleeve pipes are arranged on the bottom surface in a lower cover of the steering wheel, and springs of guide vanes are arranged in the sleeve pipes; metallic bottom plates are arranged above the sleeve pipes, and insulating covers are arranged above the bottom plates; two grooves are arranged in the insulating covers, and metallic contact pieces are arranged in the grooves to be contacted with conducting springs; the lower cover of the steering wheel is connected with the insulating covers of the bottom plates by screws to be fixed. The horn contact device of a steering wheel is arranged on the bottom plate of the steering wheel; the utility model has the advantages of simple structure, low cost, small volume, convenient installation and reliable use; the space in a cavity of a horn button can be saved.

Description

Bearing circle loudspeaker contact making device

The utility model relates to bearing circle loudspeaker knob assembly, particularly loudspeaker contact making device, is used for the caution of blowing a whistle of automobile, engineering truck, car.

The contact mechanism of bearing circle is by the stamping forming contact piece of steel plate, support, insulating mat, cushion blocking at present, in the middle of contact piece and support, support by four springs, be fixed on four screws again and cover the composition contact making device on the bearing circle, its circuit theory is that conducting ring is that positive pole is connected with lead with contact piece, base plate is a negative pole, support and the base plate fastening conduction of screw, press the bearing circle loam cake and make that positive pole on the contact piece contacts with cathode contact on the support, loudspeaker are rung, because the complex structure of blanked part, conformability has deviation; The difficult control of contact gap, the surface after the moulding also needs application to electroplate, otherwise easily gets rusty, the cost height needs to use mould, and difficulty of processing is big, again since whole contact mechanism be installed in bearing circle on cover, with the bearing circle body except that with the fixing also handy lead turn-on power of screw, the while has increased again to be connected with base plate conducts electricity the support of usefulness, the point of connection repetition, the frequent oxidation rapid wear of plug-in unit screw, increase failure factor, cause in-use performance to reduce, and occupy big quantity space.

In view of the shortcoming and defect of above-mentioned technology, the purpose of this utility model provide a kind of simple in structure, save space, cost-cutting, use reliable, the simple bearing circle loudspeaker of technology contact making device.

The utility model purpose can realize by following technical proposals: bearing circle loudspeaker contact making device of the present utility model, it comprises base plate, conducting ring, contact, on the inner bottom surface of bearing circle lower cover, have two sleeve pipes, power spring is housed respectively in the sleeve pipe, sleeve pipe top in the bearing circle lower cover is provided with the metal base plate top insulating cove is housed, two limit portions at insulating cove have groove, the power spring that is equipped with in the groove in the sleeve pipe that covers under strip metal contact piece and the bearing circle contact, and bearing circle lower cover and metal base plate and the cover-use screw that insulate are connected and fixed.

The utility model can also in the bearing circle loam cake, be provided with following insulating cove on corresponding the striking the post of knob.

Contact piece is anodal, and four contacts on the base plate are negative pole, presses knob and touches contact piece conducting sound horn and ring, and when unclamping the contact, disconnects with contact piece, cuts off and being electrically connected of storage battery, and loudspeaker are rung and promptly stopped.

Press such scheme, buckle the bearing circle loam cake, on cover strike the post corresponding with the knob on the insulating cove, pushing loam cake makes contact piece contact conducting with four contacts on the base plate, loudspeaker are rung, and unclamp loam cake because the elastic reaction of contact piece unclamps the contact, and cutting off the electricity supply rings promptly stops.

The utility model compared with prior art, the contact making device of present technique is installed on the bearing circle base plate fully, under the situation that the bearing circle loam cake is not installed, but just operation inspection loudspeaker mode of operation, cancelled lead, plug-in unit, connect reliably, cancelled parts such as metallic stamping pieces support spring, simple in structure, volume-diminished, low cost of manufacture, make surplusly in the loudspeaker knob chamber to have gone out sufficient space, can consider to install safety air bag, because contact piece is mounted in the insulating cove the inside, therefore contact gap is fixed, and must not adjust.

Fig. 1 is the utility model front elevation.

Fig. 2 is the AA cutaway view of Fig. 1.

1--bearing circle loam cake, 2--bearing circle lower cover, the 3--button, 4--metallic contact sheet, the 5--contact, the 6--buckle, the 7--conducting ring, the 8--power spring, the 9--metal base plate, the 10--joint bolt, the 11--insulating cove, the 12--sleeve pipe, 13--strikes the post, the 14--splice sleeve.

By shown in Figure 2: bearing circle lower cover (2) is equipped with guide card ring (7), having two on the lower cover inner face is the sleeve pipe (12) of one with lower cover, its material is PP, use mould molding, power spring (8) is housed in plastic casing, material is a bryllium bronze, following cap assemblies is installed in below the base plate (9), its material is the punch forming of 4mm steel plate, it is MODIFIED PP that insulating cove (11) material is housed above the base plate, Mould Machining back 100g injection machine injection moulding well, insulating cove is by shown in Figure 1, two limit P at insulating cove are provided with groove, the contact piece that the bryllium bronze punching press of 80 * 10 * 0.5mm is housed in the groove is equipped with four φ 6 on insulating cove little knob (3) contacts with contact piece (4), and lower cover (2) and base plate (9) and insulating cove (4) be with fastening connection of joint bolt (10), goes up at base plate (9) buckle (6) is installed, coupling sleeve (14) above the loam cake (1) is enclosed within on the buckle (6), and striking the post above the loam cake (1) (13) contacted with little knob (3) on the insulating cove.

Claims

1, a kind of bearing circle loudspeaker contact making device, it comprises base plate (9), conducting ring (7), contact (5), the inner bottom surface that it is characterized in that bearing circle lower cover (2) has two sleeve pipes (12), power spring (8) is housed respectively in the sleeve pipe, it is negative pole that sleeve pipe top in the bearing circle lower cover is provided with metal base plate (9), the top of base plate (9) is equipped with insulating cove (11) top knob (3) is housed, two limit portions of insulating cove have groove, strip metal contact piece (4) is housed for anodal in the groove, contact with the power spring (8) in the sleeve pipe (12), bearing circle lower cover (2) is connected and fixed with screw (10) with base plate (9) and insulating cove (11).

2, bearing circle loudspeaker contact making device according to claim 1, it is characterized in that having in the bearing circle loam cake (1) with insulating cove (11) on corresponding the striking the post of button (3) (13).