CN204140728U - The brake lining of drum-type brake - Google Patents
The brake lining of drum-type brake Download PDFInfo
- Publication number
- CN204140728U CN204140728U CN201420448807.7U CN201420448807U CN204140728U CN 204140728 U CN204140728 U CN 204140728U CN 201420448807 U CN201420448807 U CN 201420448807U CN 204140728 U CN204140728 U CN 204140728U
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- CN
- China
- Prior art keywords
- brake
- drum
- lining
- brake lining
- utility
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of brake lining of the drum-type brake that brake shoe and brake drum can be made normally to contact, be arranged on brake shoe outer surface, during work and brake drum rubbing contact, it is characterized in that: described brake shoe liner is arcuation, its radius of curvature is 89.7-89.8mm, the thickness at described brake lining edge is greater than the thickness on brake lining both sides, and the amplitude be greater than is at 0.1-0.15mm, and the surface roughness of brake lining is between Ra0.8-Ra1.2 μm.Beneficial effect is: by implementing the utility model, decrease the generation of noise, for driver drives to build stable environment.
Description
Technical field
The utility model relates to automotive brake technical field, particularly relates to a kind of brake lining of drum-type brake.
Background technique
Break may produce and make us insufferable high frequency shriek, and usual this cry is called as squeal.For drum brake, when the end that shriek occurs in brake shoe contacts with brake drum with root.In addition, cool down after break acutely works, shriek most possibly occurs, and when often occurring in low speed driving.It once occur, repeats braking, shriek can be made to increase then under similarity condition.
Drum brake is in braking process, and brake shoe and brake drum produce braking force reach retarding braking object by contacting, pressurizeing, and be generally Contact in brake shoe because curvature is overproof, result causes braking force too small.Braking force is too small poor stop when directly causing braking under certain speed of a motor vehicle, automobile belt brake travels a period of time and will produce braking abnormal sound.Structural representation when Fig. 1 is improper contact, Fig. 2 is structural representation when normally contacting.
Controlling hardness to the friction facing of braking just can make friction facing have suitable wear extent.There is good abrasion loss that friction facing and drum just can be made to have good stickiness.If the bad meeting of the laminating of friction facing and brake drum causes braking moment, deficiency produces squeal.Facts have proved: when friction factor roughness and friction factor in certain limit are directly proportional in tribology simultaneously, and the roughness of excessive brake drum can reduce friction factor cause braking moment deficiency produce friction scream.
Model utility content
Problem to be solved in the utility model is: the brake lining providing a kind of drum-type brake that brake shoe and brake drum can be made normally to contact.
The technical solution of the utility model is as follows: a kind of brake lining of drum-type brake, be arranged on brake shoe outer surface, during work and brake drum rubbing contact, it is characterized in that: described brake shoe liner is arcuation, its radius of curvature is 89.7-89.8mm, described brake lining edge thickness is greater than brake lining interior thickness, and the amplitude be greater than is at 0.1-0.15mm, and the surface roughness of brake lining is between Ra0.8-Ra1.2 μm.
The beneficial effects of the utility model are: by implementing the utility model, decrease the generation of noise, for driver drives to build stable environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of brake shoe when contacting with brake drum is improper.
Fig. 2 is the structural representation of brake shoe when normally contacting with brake drum.
Fig. 3 is structural representation of the present utility model.
Wherein: 1, brake shoe, 2, brake drum,
L1, brake lining edge thickness, L2, brake lining interior thickness,
The radius of curvature of R, brake lining.
Embodiment
Below in conjunction with accompanying drawing, brief description is made to embodiment of the present utility model.
As shown in Figure 3, a kind of brake lining of drum-type brake, is arranged on brake shoe 1 outer surface, during work and brake drum 2 rubbing contact.During due to brake work, push brake shoe 1 to brake drum 2, remove friction brake drum 2 by the brake lining on brake shoe 1 surface and then reach the effect of deceleration.In real work, due to material, this can produce deformation in conductance, the position that always brake lining is middle is just caused to contact brake drum 2 the earliest, be separated with brake drum 2 the latest, and then cause the generation of friction noise, so the brake shoe liner improved is arcuation, its radius of curvature R is 89.7-89.8mm, the thickness L1 at described brake lining edge is greater than the thickness L2 in the middle of brake lining, the amplitude be greater than is at 0.1-0.15mm, and the surface roughness of brake lining is between Ra0.8-Ra1.2 μm.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (1)
1. the brake lining of a drum-type brake, be arranged on brake shoe (1) outer surface, during work and brake drum (2) rubbing contact, it is characterized in that: described brake shoe liner is arcuation, its radius of curvature is 89.7-89.8mm, the thickness (L1) at described brake lining edge is greater than brake lining interior thickness (L2), and the amplitude be greater than is at 0.1-0.15mm, and the surface roughness of brake lining is between Ra0.8-Ra1.2 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448807.7U CN204140728U (en) | 2014-08-11 | 2014-08-11 | The brake lining of drum-type brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448807.7U CN204140728U (en) | 2014-08-11 | 2014-08-11 | The brake lining of drum-type brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140728U true CN204140728U (en) | 2015-02-04 |
Family
ID=52417413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420448807.7U Expired - Fee Related CN204140728U (en) | 2014-08-11 | 2014-08-11 | The brake lining of drum-type brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140728U (en) |
-
2014
- 2014-08-11 CN CN201420448807.7U patent/CN204140728U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20160811 |