CN102644682A - Drum brake parking structure - Google Patents
Drum brake parking structure Download PDFInfo
- Publication number
- CN102644682A CN102644682A CN2012101220917A CN201210122091A CN102644682A CN 102644682 A CN102644682 A CN 102644682A CN 2012101220917 A CN2012101220917 A CN 2012101220917A CN 201210122091 A CN201210122091 A CN 201210122091A CN 102644682 A CN102644682 A CN 102644682A
- Authority
- CN
- China
- Prior art keywords
- drum brake
- parking
- fixed
- parking structure
- horseshoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 210000000003 hoof Anatomy 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Braking Arrangements (AREA)
Abstract
The invention discloses a drum brake parking structure, which comprises a horseshoe and a friction plate arranged at the edge of the horseshoe. The horseshoe and the friction plate are mounted in a drum body bottom plate, a cam is arranged between two ends of the horseshoe and fixed on a cam shaft, the cam shaft passes through a flange disc and is fixed with a pull arm, and a parking cable is fixed on the pull arm. Advantages of the inventive structure include adjustable pull arm position, convenient arrangement, improved cable mounting efficiency, simple structure, easy manufacturing, low cost, good safety and reliability, low failure rate, long service life, and improved system practicability and economical efficiency.
Description
Technical field
The present invention relates to the drum brake of automobile, particularly a kind of Parking structure of drum brake.
Background technique
The automotive brake principal mode is drum brake, dribbling drum brake and comprehensive Parking Brake in the existing technology, and drum brake also is block brake, leans on brake slipper on Brake drum, to compress and realizes braking.Because its cost of production is lower, is used for the smaller trailing wheel of brake load in a large number.
But because many component such as drum brake inside brake shoe, torque arm, return spring and clutch release slave cylinder have occupied very large space; Make drum brake that great difficulty arranged when arranging parking device; The backguy inconvenient installation; Particularly using more and more under the situation of third generation hub bearing on the automobile at present, it is nervous that the installing space of parking device more shows.
A kind of novel Parking structure is provided, and the installation efficiency that improves drum brake is the problem that existing technology need solve.
Summary of the invention
Technical problem to be solved by this invention is a kind of Parking structure of drum brake to be provided, to reach the purpose of the installation efficiency that improves drum brake.
For solving the problems of the technologies described above, technological scheme of the present invention is a kind of Parking structure of drum brake; The edge that comprises shoes is provided with friction plate and is installed in the bulging body base plate; It is characterized in that: be provided with cam between described shoes two ends and be fixed on the wheel shaft, wheel shaft passes flange plate and torque arm is fixed, and the Parking drag-line is fixed in the torque arm; Thereby cam is imported the arm of force be installed in the break outside, install and replacing Parking drag-line with convenient.
Be provided with jump ring between described wheel shaft and the flange plate, thereby wheel shaft has been played spacing effect.
Described flange plate runs through bulging body base plate.
Described torque arm is passed wheel shaft and is fixed with nut, and relative position is adjustable, and convenient the layout improved the installation efficiency of Parking drag-line.
Be provided with return spring in the middle of the described shoes.
A kind of Parking structure of drum brake, owing to adopt said structure, this structure has the following advantages: 1, torque arm adjustable positions, the convenient layout improved the backguy installation efficiency; 2, simple in structure, be easy to make, with low cost; 3, safe and reliable, rate of fault is low, and long service life effectively improves system availability and Economy.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation;
Fig. 1 is the Facad structure schematic representation of the Parking structure of a kind of drum brake of the present invention;
Fig. 2 for the A of the Parking structure of a kind of drum brake of the present invention to cross-sectional view;
Fig. 3 for the B of the Parking structure of a kind of drum brake of the present invention to cross-sectional view;
In Fig. 1-3,1, cam; 2, wheel shaft; 3, flange plate; 4, rouse the body base plate; 5, torque arm; 6, jump ring; 7, shoes; 8, friction plate; 9, return spring.
Embodiment
Shown in Fig. 1-3, the present invention imports the arm of force with cam and is installed in the break outside, installs and replacing Parking drag-line with convenient.
Substitute the Parking torque arm that is built in brake inside through cam 1 mechanism; Utilize the controllability of cam type surface just can obtain comparatively desirable input/output relation after cam drive is fixing; And then can obtain comparatively stable braking moment; And the cam drive reliability is high, and component are few and simple in structure, is particularly useful for being installed in the narrow and small compact working environment; The input torque of cam can require to adjust according to vehicle, thereby not in the size of limiting to the break inner space.
The edge that the present invention includes shoes 7 is provided with friction plate 8 and is installed in the bulging body base plate 4; Hoof; Be provided with cam 1 between 7 two ends and be fixed on the wheel shaft 2, it is fixing with torque arm 5 that wheel shaft 2 passes flange plate 3, and the Parking drag-line is fixed in the torque arm 5; Thereby the cam 1 input arm of force is installed in the break outside, installs and replacing Parking drag-line with convenient.
Be provided with jump ring 6 between wheel shaft 1 and the flange plate 3, thereby wheel shaft 2 has been played spacing effect.Flange plate 3 runs through bulging body base plate 4.Torque arm 5 is passed wheel shaft 2 usefulness nuts and is fixed, and relative position is adjustable, and convenient the layout improved the installation efficiency of Parking drag-line.And in the middle of shoes 7, be provided with return spring 9.
After vehicle stopped, driver pulling Parking handle was delivered to power in the torque arm 5 through driving mechanisms such as Parking drag-lines; Like Fig. 1, shown in 2; Live axle 2 is rotated in torque arm 5, and wheel shaft 2 drives cam 1 and rotates thereupon, and cam 1 rotation will promote shoes 7 and be affixed to the inboard working surface of brake drum with friction plate 8; Driver continues pulling Parking handle; Then cam 1 is rotated further and can makes the inboard working surface of shoes 7 and 8 pairs of brake drums of friction plate produce positive pressure, under the effect of positive pressure, just brake drum is produced the static friction force along its sense of rotation, thereby stops wheel to realize parking function.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as the various improvement of having adopted technological scheme of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (5)
1. the Parking structure of a drum brake; The edge that comprises shoes (7) is provided with friction plate (8) and is installed in the bulging body base plate (4); It is characterized in that: be provided with cam (1) between described shoes (7) two ends and be fixed on the wheel shaft (2); It is fixing with torque arm (5) that wheel shaft (2) passes flange plate (3), and the Parking drag-line is fixed in the torque arm (5).
2. the Parking structure of a kind of drum brake according to claim 1 is characterized in that: be provided with jump ring (6) between described wheel shaft (2) and the flange plate (3).
3. the Parking structure of a kind of drum brake according to claim 1 and 2, it is characterized in that: described flange plate (3) runs through bulging body base plate (4).
4. the Parking structure of a kind of drum brake according to claim 1, it is characterized in that: described torque arm (5) is passed wheel shaft (2) and is fixed with nut, and relative position is adjustable.
5. the Parking structure of a kind of drum brake according to claim 1 is characterized in that: be provided with return spring (9) in the middle of the described shoes (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101220917A CN102644682A (en) | 2012-04-24 | 2012-04-24 | Drum brake parking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101220917A CN102644682A (en) | 2012-04-24 | 2012-04-24 | Drum brake parking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644682A true CN102644682A (en) | 2012-08-22 |
Family
ID=46657707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101220917A Pending CN102644682A (en) | 2012-04-24 | 2012-04-24 | Drum brake parking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102644682A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1265078A (en) * | 1968-07-04 | 1972-03-01 | ||
| KR20010037919A (en) * | 1999-10-20 | 2001-05-15 | 정주호 | Drum Type Brake Structure Of Automotive Vehicle |
| CN2929326Y (en) * | 2006-07-24 | 2007-08-01 | 张娟仙 | Pneumatic new brake |
| CN202091412U (en) * | 2011-05-30 | 2011-12-28 | 泰州神力车桥有限公司 | Left camshaft assembly for left brake of engineering vehicle |
| CN102336182A (en) * | 2010-07-14 | 2012-02-01 | 北汽福田汽车股份有限公司 | Parking brake, vehicle braking system and vehicle |
-
2012
- 2012-04-24 CN CN2012101220917A patent/CN102644682A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1265078A (en) * | 1968-07-04 | 1972-03-01 | ||
| KR20010037919A (en) * | 1999-10-20 | 2001-05-15 | 정주호 | Drum Type Brake Structure Of Automotive Vehicle |
| CN2929326Y (en) * | 2006-07-24 | 2007-08-01 | 张娟仙 | Pneumatic new brake |
| CN102336182A (en) * | 2010-07-14 | 2012-02-01 | 北汽福田汽车股份有限公司 | Parking brake, vehicle braking system and vehicle |
| CN202091412U (en) * | 2011-05-30 | 2011-12-28 | 泰州神力车桥有限公司 | Left camshaft assembly for left brake of engineering vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120822 |