CN201050566Y

CN201050566Y - Automatic adjusting arm for vehicle brake gap

Info

Publication number: CN201050566Y
Application number: CNU2007200361664U
Authority: CN
Inventors: 黄斯成
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-13
Filing date: 2007-04-13
Publication date: 2008-04-23
Anticipated expiration: 2017-04-13

Abstract

The utility model relates to a novel automobile braking gap self-correcting arm, which solves the problems that the prior automobile braking gap self-correcting arm has high manufacture cost and long service life. The self-correcting arm consists of a shell, a worm wheel, a worm, a control disc, a tooth bar and an isolator. The utility model is characterized in that the isolator comprises retaining rings, sleeves and rollers, wherein, the retaining rings are sleeved on the sleeves at one side, the inner ring walls of the retaining rings are evenly distributed with axial alveoluses, each alveolus is provided with a columned roller inside, and the sleeves at the other side are external meshing gears. The utility model cannot cause the braking gap self-correcting arm to be out of work due to the reverse slippage of the isolator, cannot cause accidents of vehicles because the braking gap self-correcting arm is out of work, and can improve the service life of the automobile braking gap self-correcting arm; on the other hand, the isolator adopting the sleeves, the retaining rings and the rollers has good manufacturability and reduces the production cost.

Description

The new automobile arm for automatically regulating clearance of brake

Technical field

The utility model relates to arm for adjusting automobile brake clearance automatically.

Background technique

Known arm for adjusting automobile brake clearance automatically adopts the spring one-way element, existing spring one-way element, and not only the relevant parameter to counterpart requires very strictness, and manufacture difficulty is big, and in its design principle insecure factor is arranged also; Skidding is very general in the actual use of home made article, Problem of Failure such as it is loud that, tumble moment of torsion not enough such as the tumble moment of torsion descends too fast or tumble skids, therefore the traffic accident that causes occurs repeatedly, and causes very big personal property loss, influences the Safety performance of automobile.

Summary of the invention

The purpose of this utility model is: the new automobile arm for automatically regulating clearance of brake that a kind of reliable operation, low cost of manufacture, long service life are provided.

The purpose of this utility model is to realize that by the improvement to existing arm for adjusting automobile brake clearance automatically concrete architecture advances scheme is as follows:

The new automobile arm for automatically regulating clearance of brake comprises housing, worm gear, worm screw, control panel, tooth bar and one-way element, worm gear and worm screw cooperation are positioned at housing, coaxial worm gear one side that is positioned at of control panel, one-way element is sleeved on the worm shaft, and the tooth bar lower end that cooperates with one-way element is positioned at the control panel groove.

Described one-way element comprises retaining ring, sleeve pipe and roller, and retaining ring is set on the side sleeve pipe, and uniform axially teeth groove is provided with a cylindrical rollers on the described retaining ring internal ring wall in each teeth groove, and the opposite side sleeve pipe is an external gear pump.

Described sleeve pipe the other end excircle is the straight-tooth external gear pump, and sleeve pipe and straight-tooth external gear pump are the one gear shaft.

Described retaining ring is the bottle cap shape, and axially the middle part is provided with through hole, uniform axially teeth groove on its inner peripheral wall, and the inner orifice of through hole is the female cone dentation.

The utility model can not cause arm for automatically regulating clearance of brake to lose efficacy because of one-way element oppositely skids by the improvement to existing arm for adjusting automobile brake clearance automatically; Can not cause the vehicle safety accident because of arm for automatically regulating clearance of brake loses efficacy; Improved the working life of arm for adjusting automobile brake clearance automatically; Adopt the one-way element good manufacturability of sleeve pipe, retaining ring and roller on the other hand, reduced cost of production.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is normal clearance braking state figure,

Fig. 3 is super gap braking state figure,

Fig. 4 is the A-A cutaway view Amplified image of Fig. 3,

Fig. 5 adjusts phase diagram for return,

Fig. 6 is the B-B cutaway view Amplified image of Fig. 5.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

The new automobile arm for automatically regulating clearance of brake comprises housing 8, worm gear 7, worm screw 6, control panel 5, tooth bar 4 and one-way element, sees Fig. 1 and Fig. 2.Worm gear 7 and worm screw 6 cooperates and is positioned at housing 8, and control panel 5 is coaxial to be positioned on the worm-wheel shaft of worm gear 7 one sides, and one-way element is sleeved on the worm shaft, and tooth bar 4 lower ends that cooperate with one-way element are positioned at the groove of control panel 5.

One-way element comprises retaining ring 1, sleeve pipe 3 and roller 2.Retaining ring 1 is the bottle cap shape, axially the middle part has through hole, be sleeved on the side sleeve pipe 3 by through hole retaining ring 1, uniform axially teeth groove on its inner peripheral wall, the inner orifice of through hole is the female cone dentation, 9 are equipped with a cylindrical rollers 2 in each teeth groove, and sleeve pipe 3 the other ends are the straight-tooth external gear pump, and sleeve pipe 3 is the one gear shaft with the straight-tooth external gear pump.

Working principle is as follows:

When the gap between hub was setting value when friction lining and braking, control panel 5 was done clockwise rotation motion with respect to housing 8, and its rotational angle range is confined to can not realize interference to tooth bar between the difference δ of shifting block width of its gap width and tooth bar 4.Worm screw 6, worm gear 7 rotate synchronously with housing 8 in the lump, see Fig. 1 and Fig. 2, make " S " cam promote brake shoe by spline and make friction lining and braking hub force applying to realize vehicle brake;

When friction lining surpasses setting value because of the gap between wearing and tearing and braking hub increases, the brake stroke must strengthen, in the stroke of enlarged portion, the breach back arm of control panel 5 then promotes tooth bar 4 Top Runby ε, tooth bar 4 promotes gear 3 and clockwise rotates, the axial region of gear 3 drives roller 2 and rolls counterclockwise in retaining ring 1, because retaining ring 1 is far longer than the thrust that roller 2 rolls and produces with the bevel gear pair combination force of worm screw 6 this moment, so 2 counterclockwise rotations of roller in the original place, retaining ring 1 and worm screw 6 can not rotated thereupon, see Fig. 3 and Fig. 4;

But, during the brake return, tooth bar 4 retreats descending under the effect of the comprehensive returning place force of Brake System, moving back the said δ in front, when continuing the stroke of descending enlarged portion ε, then spurring gear 3 rotates counterclockwise, gear 3 axial regions drive roller 2 will do clockwise rolling, but retardance because of dentation raceway particular curve, force this rolling not realize, but suffered drive is passed to retaining ring 1, retaining ring 1 drives worm screw 6 by bevel gear pair and rotates counterclockwise, worm screw 6 drive worm gears 7 rotate counterclockwise the angle corresponding to ε, see Fig. 5 and Fig. 6.This angle also is " S " cam to reducing the angle that the brake clearance direction is rotated, and makes the brake clearance that increases because of the friction lining wearing and tearing obtain corresponding compensation, thereby realizes adjusting the function that arm is adjusted brake clearance automatically.

Claims

1. the new automobile arm for automatically regulating clearance of brake comprises housing, worm gear, worm screw, control panel, tooth bar and one-way element, worm gear and worm screw cooperation are positioned at housing, coaxial worm gear one side that is positioned at of control panel, one-way element is sleeved on the worm shaft, the tooth bar lower end that cooperates with one-way element is positioned at the control panel groove, it is characterized in that: described one-way element comprises retaining ring, sleeve pipe and roller, retaining ring is set on the side sleeve pipe, uniform axially teeth groove on the described retaining ring internal ring wall, be provided with a cylindrical rollers in each teeth groove, the opposite side sleeve pipe is an external gear pump.

2. new automobile arm for automatically regulating clearance of brake according to claim 1 is characterized in that: described sleeve pipe the other end excircle is the straight-tooth external gear pump, and sleeve pipe and straight-tooth external gear pump are the one gear shaft.

3. new automobile arm for automatically regulating clearance of brake according to claim 1 is characterized in that: described retaining ring is the bottle cap shape, and axially the middle part is provided with through hole, uniform axially teeth groove on its inner peripheral wall, and the inner orifice of through hole is the female cone dentation.