CN207145485U - A kind of automobile brake shoe Floating cam drum brake - Google Patents
A kind of automobile brake shoe Floating cam drum brake Download PDFInfo
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- CN207145485U CN207145485U CN201721077645.0U CN201721077645U CN207145485U CN 207145485 U CN207145485 U CN 207145485U CN 201721077645 U CN201721077645 U CN 201721077645U CN 207145485 U CN207145485 U CN 207145485U
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Abstract
A kind of automobile brake shoe Floating cam drum brake, including brake backing plate, brake-shoe and the cam being fixed on bottom plate, return spring is installed on two brake-shoes, friction facing mounted in brake-shoe it is cylindrical on, brake-shoe one end is movably arranged on back-plate by sphere-contact device, the other end is provided with roller, roller and cam contact, on sphere-contact device, the floating bushing of the shoe plate end of brake-shoe or the pin that floats use spherical rotation structure, make brake-shoe under stress, can be around pin-and-hole center rotating.Sphere-contact device has two kinds of structure types of the rotary axle box on brake-shoe and the rotation axle assembly on back-plate.The utility model has the advantages that：1st, brake and the unilateral difference gap of brake drum are small, and installation and debugging are easy.2nd, in use, initial contact area is big for brake, and braking moment is stable.3rd, left and right braking force value is balanced on automobile, causes braking not sideslip.
Description
Technical field
Automobile braking device is the utility model is related to, specifically a kind of automobile brake shoe Floating cam drum brake
Device.
Background technology
The structure of existing brake cam of automobile drum brake, compressed on the brake wheel by brake-shoe to realize brake
's.Brake-shoe is internal expanding type, and it is located on the inside of braked wheel, the circle that two arcuate brake hoof are fixed with its end when brake
The bearing pin of cylindricality is arranged on bottom plate, and the other end is flared out by cam, and friction plate is adjacent to the inner side of braked wheel, reaches brake
The purpose of car.
It is this applied on automobile in following drawback be present：
1st, the accumulated error of the brake part accuracy of manufacture, cause brake and the unilateral gap of brake drum excessive, vehicle bridge dress
Can not be offline after the completion of matching somebody with somebody, particularly the vehicle bridge equipped with automatic adjusting arm causes toning, can not use.
2nd, in use, brake-shoe opens brake, and initial contact area is less than 70%, and braking moment is unstable.
3rd, left and right braking force value has difference on automobile, unbalanced, causes brake side-slipping.
The content of the invention
The utility model is that the cylindrical pin shaft structure fixed to solve brake-shoe end in above-mentioned brake is present
The problem of, there is provided a kind of brake-shoe self-regulated gap drum brake.It is of the present utility model to be structurally characterized in that handle and brake-shoe and bottom
The bearing pin of the fixed cylinder shape of plate connection is changed into the rotary axle box of sphere-contact or rotates axle assembly.
This automobile brake shoe Floating cam drum brake, including brake backing plate, be connected as a single entity with bottom plate it is anti-
Dust hood, brake-shoe and the cam being fixed on bottom plate, spring-hanging column is installed on two brake-shoes, return is housed between two spring-hanging columns
Spring, friction facing mounted in brake-shoe it is cylindrical on, it is characterised in that brake-shoe one end is movably arranged on by sphere-contact device
On back-plate, the other end is provided with roller, roller and cam contact, on sphere-contact device, the shoe plate end of brake-shoe
Floating bushing or the pin that floats use spherical rotation structure, make brake-shoe under stress, can be around pin-and-hole center rotating.
The utility model has the advantages that：1st, brake and the unilateral difference gap of brake drum are small, and installation and debugging are easy.
2nd, in use, brake-shoe opens brake, and initial contact area is big, and braking moment is stable.
3rd, left and right braking force value is balanced on automobile, causes braking not sideslip.
Brief description of the drawings
Fig. 1 is mounted in the front view of the rotary axle box form brake component on brake-shoe
Fig. 2 is Fig. 1 A-A sectional views
Fig. 3 is brake shoe assembly front view
Fig. 4 is Fig. 3 B-B sectional views
Fig. 5 .1 are mounted in the rotary axle box original state figure on brake-shoe
Fig. 5 .2 are mounted in the state diagram of the rotary axle box working range 1 on brake-shoe
Fig. 5 .3 are mounted in the state diagram of the rotary axle box working range 2 on brake-shoe
Fig. 6 is mounted in the front view of the rotation axle assembly form brake component on back-plate
Fig. 7 is Fig. 6 A-A sectional views
Fig. 8 is floor pan assembly front view
Fig. 9 is Fig. 8 B-B sectional views
Figure 10 .1 are mounted in the rotation axle assembly original state figure on back-plate
Figure 10 .2 are mounted in the state diagram for rotating axle assembly working range 1 on back-plate
Figure 10 .3 are mounted in the state diagram for rotating axle assembly working range 2 on back-plate
In figure：1st, bottom plate, 2, brake-shoe, 3, spring-hanging column, 4, return spring, 5, friction facing, 6, roller, 7, cam, 8,
Float pin, and 9, rotary axle box, 10, outer ring, 11, sphere, 12, support set, 13, back-moving spring, 14, floating bushing, 15, axostylus axostyle.
Embodiment
This automobile brake shoe Floating cam drum brake, including brake backing plate 1, be connected as a single entity with bottom plate 1
Dust cover（It is not drawn into）, brake-shoe 2 and the cam 7 being fixed on bottom plate 1, spring-hanging column 3 is installed on two brake-shoes 2, two hang
Return spring 4 is housed between spring post 3, friction facing 5 mounted in brake-shoe 2 it is cylindrical on, it is characterised in that the one end of brake-shoe 2 passes through
Sphere-contact device is movably arranged on back-plate 1, and the other end is provided with roller 6, and roller 6 and cam 7 contact, sphere-contact
On device, the floating bushing 14 or floating pin 8 of the shoe plate end of brake-shoe use spherical rotation structure, make brake-shoe 2 under stress,
Can be around pin-and-hole center rotating.
Sphere-contact device has the rotary axle box on brake-shoe and the rotation axle assembly on back-plate
Two kinds of structure types.
In figures 1-4, the form of rotary axle box 9 on brake-shoe 2：There is rotary shaft in the shoe plate end of brake-shoe 2
Set 9, rotary axle box 9 has outer ring 10 and floating bushing 14, and floating bushing 14 is sleeved in outer ring 10, and the center of floating bushing 14 is provided with fixation
Axostylus axostyle 15 on bottom plate 1, outer ring 10 are fixed on the shoe plate end of brake-shoe 2, the contact surface between outer ring 10 and floating bushing 14
For sphere 11, in Fig. 5 .1, Fig. 5 .2, Fig. 5 .3, rotary axle box original state, the work being arranged on brake-shoe are represented respectively
Scope 1 and working range 2, shoe plate can also do the motion in other small size directions in addition to planar doing opening and closing motion.
In figs. 6-9, the rotation axle assembly form on back-plate 1, support set is fixed with back-plate 1
12, support set 12 has outer ring 10 and floating pin 8, and outer ring 10 is fixed on back-plate 1, and floating pin 8 is inserted into outer ring 10, floats
Brake-shoe 2 is installed on dynamic pin 8, the contact surface between outer ring 10 and floating pin 8 is sphere 11, is provided with two shoe plate ends
Back-moving spring 13, in Figure 10 .1, Figure 10 .2, Figure 10 .3, represent that the rotation axle assembly on back-plate is initial respectively
State, working range 1 and working range 2, shoe plate can also do other small size directions in addition to planar doing opening and closing motion
Motion.
Claims (5)
1. a kind of automobile brake shoe Floating cam drum brake, including brake backing plate, be connected as a single entity with bottom plate it is dust-proof
Cover, brake-shoe and the cam being fixed on bottom plate, spring-hanging column is installed on two brake-shoes, return bullet is housed between two spring-hanging columns
Spring, friction facing mounted in brake-shoe it is cylindrical on, it is characterised in that brake-shoe one end is movably arranged on system by sphere-contact device
On dynamic bottom plate, the other end is provided with roller, roller and cam contact, on sphere-contact device, the shoe plate end of brake-shoe it is floating
Dynamic set or the pin that floats use spherical rotation structure, make brake-shoe under stress, can be around pin-and-hole center rotating.
2. a kind of automobile brake shoe Floating cam drum brake according to claim 1, it is characterised in that sphere connects
Tactile device has two kinds of structure types of the rotary axle box on brake-shoe and the rotation axle assembly on back-plate.
3. a kind of automobile brake shoe Floating cam drum brake according to claim 2, it is characterised in that be arranged on
Rotary axle box on brake-shoe (2)（9）Form：In brake-shoe（2）Shoe plate end have rotary axle box（9）, rotary axle box（9）Have
Outer ring（10）And floating bushing（14）, floating bushing（14）It is sleeved on outer ring（10）In, floating bushing（14）Center, which is provided with, is fixed on bottom
Plate（1）On axostylus axostyle（15）, outer ring（10）It is fixed on brake-shoe（2）Shoe plate end, outer ring（10）And floating bushing（14）Between
Contact surface be sphere（11）, shoe plate except planar do opening and closing motion in addition to, can also do the motion in other small size directions.
4. a kind of automobile brake shoe Floating cam drum brake according to claim 2, it is characterised in that be arranged on
Back-plate（1）On rotation axle assembly form, in back-plate（1）On be fixed with support set（12）, support set（12）Have outer
Circle（10）Sold with floating（8）, outer ring（10）It is fixed on back-plate（1）On, float pin（8）It is inserted into outer ring（10）In, float
Brake-shoe (2) is installed, the contact surface between outer ring (10) and the pin (8) that floats is sphere (11), and shoe plate is except flat on pin (8)
It is outer that opening and closing motion is done in face, can also do the motion in other small size directions.
5. a kind of automobile brake shoe Floating cam drum brake according to claim 4, it is characterised in that at two
Shoe plate end is provided with back-moving spring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721077645.0U CN207145485U (en) | 2017-08-27 | 2017-08-27 | A kind of automobile brake shoe Floating cam drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721077645.0U CN207145485U (en) | 2017-08-27 | 2017-08-27 | A kind of automobile brake shoe Floating cam drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207145485U true CN207145485U (en) | 2018-03-27 |
Family
ID=61670223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721077645.0U Active CN207145485U (en) | 2017-08-27 | 2017-08-27 | A kind of automobile brake shoe Floating cam drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207145485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339343A (en) * | 2017-08-27 | 2017-11-10 | 湖南运达机电科技股份有限公司 | A kind of automobile brake shoe Floating cam drum brake |
| CN111976197A (en) * | 2020-05-27 | 2020-11-24 | 山东省科学院自动化研究所 | Double-brake device of double-disc friction press |
-
2017
- 2017-08-27 CN CN201721077645.0U patent/CN207145485U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339343A (en) * | 2017-08-27 | 2017-11-10 | 湖南运达机电科技股份有限公司 | A kind of automobile brake shoe Floating cam drum brake |
| CN111976197A (en) * | 2020-05-27 | 2020-11-24 | 山东省科学院自动化研究所 | Double-brake device of double-disc friction press |
| CN111976197B (en) * | 2020-05-27 | 2022-03-01 | 山东省科学院自动化研究所 | Double-brake device of double-disc friction press |
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