CN2711456Y

CN2711456Y - Control lever device for automatic car brake gap adjusting lever

Info

Publication number: CN2711456Y
Application number: CN 200420060048
Authority: CN
Inventors: 许萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-28
Filing date: 2004-06-28
Publication date: 2005-07-20
Anticipated expiration: 2014-06-28

Abstract

The utility model provides a control lever device for automatic car brake gap adjusting lever, mainly comprising a control arm 1, a control loop 2, an attachment ring 3 and a cover board 4. The control loop 2 is sheathed on and anchored with the attachment ring 3. The cover board 4 is sheathed on the excircle of the cascade circular projection 2a the control loop 2, and is posioned between the control arm 1 and the control loop 2. The control arm 1 and the cascade circular projection 2a of the control loop 2 are respectively fastened by the inner tooth 1a and the external tooth 2b above. The transmitting force between the control arm and the control loop of the utility model is direct and fast, and the reliable and firm connection enables the gap compensation function of the entire automatic car brake gap adjusting lever to be more stable and reliable.

Description

The control arm device of arm for adjusting automobile brake clearance automatically

One, technical field:

The utility model relates to the control arm device of parts, especially an arm for adjusting automobile brake clearance automatically of arm for adjusting automobile brake clearance automatically.

Two, background technique:

At present, break on the automobile normally realizes braking by the frictional force between friction plate and brake drum or the brake disc, this break in use, along with the wearing and tearing of friction plate, gap between friction plate and brake drum or the brake disc can be strengthened gradually, thereby influences braking effect.For this brake clearance is adjusted automatically, make gap between friction plate and brake drum or the brake disc all the time in given scope, arm for adjusting automobile brake clearance automatically has been developed out and has been widely used on the heavy vehicles such as various automobile, especially heavy truck, high-grade motor bus and various trailers.As the patent No. is ZL03234030.3, the model utility name is called in the Chinese utility model patent of " arm for adjusting automobile brake clearance automatically " and has just disclosed a kind of arm for adjusting automobile brake clearance automatically, the control arm device of this arm for adjusting automobile brake clearance automatically is by control arm, cover plate, draw-barring and control ring are formed, control arm wherein, control ring all is sleeved on the draw-barring, cover plate is enclosed within on the belt boss of ladder of control ring, and between control arm and control ring, control arm links to each other by rake tooth or annular knurl extruding with draw-barring, control ring and draw-barring are fixed together by tooth interlock or alternate manner, draw-barring not only plays axial connection effect, but also play the effect of transmission power, the power that is control arm must be delivered on the control ring by draw-barring, the shortcoming of this structure is: if make control arm stressed too big because of accidental improper sudden reason, very easily relatively rotate between control arm and the draw-barring because of stinging incessantly, make the Control Failure of arm for automatically regulating clearance of brake, thereby influence effective braking of whole automobile.

Three, summary of the invention:

The purpose of this utility model provides a kind of control arm device of arm for adjusting automobile brake clearance automatically, and the control arm device that solves the orthodox car arm for automatically regulating clearance of brake is easily because of the problem of accidental improper sudden former thereby Control Failure.

The technical solution of the utility model is: it comprises control arm, control ring, draw-barring and cover plate, control ring is sleeved on the draw-barring and tightens together, cover plate is enclosed within on the ladder annular boss cylindrical of control ring, and between control arm and control ring, its structural feature is: described control arm is fastening by the inside and outside tooth interlock on it respectively between the ladder annular boss of control ring.

Control arm directly is fixedly connected on the control ring by the tooth interlock in the utility model, like this, control arm just can no longer be directly passed to control ring by draw-barring with power, and it is more direct to make arm for automatically regulating clearance of brake transmit power, it is quicker to transmit action, and the compensating action in gap is more reliable and more stable.And, owing to be that the tooth interlock is fastening, make control arm stressed too big even therefore run into accidental improper sudden reason, also be unlikely to make and sting between control arm and the control ring incessantly and the displacement that relatively rotates, thereby avoided in use losing the problem of brake clearance automatic compensation function phenomenon because of control arm device Control Failure makes arm for adjusting automobile brake clearance automatically.

The beneficial effects of the utility model are: transmission power is direct between control arm and the control ring, and is agile, connects solid and reliablely, makes the gap compensating action of whole arm for adjusting automobile brake clearance automatically more reliable and more stable.

Four, description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the right elevation of Fig. 1.

Five, embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is further described:

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of control arm device of arm for adjusting automobile brake clearance automatically, form by control arm 1, control ring 2, draw-barring 3, cover plate 4 and seal ring 6, control ring 2 is sleeved on the draw-barring 3 and tightens together, cover plate 4 is enclosed within on the ladder annular boss 2a cylindrical of control ring 2, and between control arm 1 and control ring 2, its structure outline is: described control arm 1 is fastening by internal tooth 1a, external tooth 2b interlock on it respectively between the ladder annular boss 2a of control ring 2.

As can be seen from Figure 2: the external tooth 2b on internal tooth 1a on the control arm 1 and the control ring 2 ladder annular boss 2a is the inside and outside rectangular teeth that matches, and rectangular teeth can make between control arm 1 and the control ring 2 interlock more firm.

As can be seen from Figure 3: an end of draw-barring 3 outwards turns down, and being provided with tooth 5 in outer rim, tooth 5 is embedded in the teeth groove that is complementary with it on the control ring 2, can guarantee the fixing that connects between draw-barring 3 and the control ring 2 like this, certainly, also can adopt other connecting mode to tighten together between them.

As can be seen from Figure 1: be provided with seal ring 6 between control arm 1 and the cover plate 4, enter the surface of contact between the ladder annular boss 2a of cover plate 4 and control ring 2, influence its rotation to prevent extraneous greasy dirt, dust etc.

During use, cover plate 4 is by on the housing that is bolted to arm for automatically regulating clearance of brake, control arm 1 is fixed on the vehicle bridge, its working principle is identical with the control arm device that arm is adjusted in the traditional braking gap automatically, its difference is that control arm 1 is no longer by draw-barring 3 but power is directly passed to control ring 2, the transmission of power is more direct, and connecting between control arm 1 and the control ring 2 is very reliable, can not occur making the stressed malfunctioning problem of control arm device that causes too greatly of control arm because of accidental improper sudden reason again.

Claims

1, a kind of control arm device of arm for adjusting automobile brake clearance automatically, comprise control arm (1), control ring (2), draw-barring (3) and cover plate (4), control ring (2) is sleeved on the draw-barring (3) and tightens together, cover plate (4) is enclosed within on ladder annular boss (2a) cylindrical of control ring (2), and be positioned between control arm (1) and the control ring (2), it is characterized in that: described control arm (1) is fastening by inside and outside tooth (1a, the 2b) interlock on it respectively between the ladder annular boss (2a) of control ring (2).

2, the control arm device of arm for adjusting automobile brake clearance automatically according to claim 1 is characterized in that: internal tooth (1a) and the external tooth (2b) on control ring (2) the ladder annular boss (2a) on the described control arm (1) are the inside and outside rectangular teeths that matches.

3, the control arm device of arm for adjusting automobile brake clearance automatically according to claim 1 and 2, it is characterized in that: an end of described draw-barring (3) outwards turns down, and being provided with tooth (5) in outer rim, described tooth (5) is embedded in the teeth groove that is complementary with it on the control ring (2).

4, the control arm device of arm for adjusting automobile brake clearance automatically according to claim 1 and 2 is characterized in that: be provided with seal ring (6) between described control arm (1) and the cover plate (4).

5, the control arm device of arm for adjusting automobile brake clearance automatically according to claim 3 is characterized in that: be provided with seal ring (6) between described control arm (1) and the cover plate (4).