CN203374703U - Brake pad device of drum brake - Google Patents
Brake pad device of drum brake Download PDFInfo
- Publication number
- CN203374703U CN203374703U CN201320353372.3U CN201320353372U CN203374703U CN 203374703 U CN203374703 U CN 203374703U CN 201320353372 U CN201320353372 U CN 201320353372U CN 203374703 U CN203374703 U CN 203374703U
- Authority
- CN
- China
- Prior art keywords
- brake
- brake block
- brake pad
- drum
- side wall
- 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 relates to a brake pad device of a drum brake. The brake pad device of the drum brake comprises a left brake pad mounting frame and a right brake pad mounting frame, wherein the upper end parts of both the left and right brake pad mounting frames are hinged through a mounting shaft; a rocker arm is arranged between the lower end parts of both the left and right brake pad mounting frames; a reset spring is connected between the left and right brake pad mounting frames; a left brake pad is fixed on the left sidewall which is located at the left side of the brake pad mounting frame; a right brake pad is fixed on the right sidewall which is located at the right side of the brake pad mounting frame; when the drum brake is motionless, the left sidewall of the left brake pad and the right sidewall of the right brake pad are two sections of round arcs of the same ellipse, and the center of the rotating shaft and the center of the rocker arm are located on the long axis of the ellipse. After the installation and use, the brake pad device of the drum brake can improve the braking performance of the drum brake device remarkably and improves running safety performance of a vehicle.
Description
Technical field
The utility model relates to a kind of parts of drum type braking device, especially a kind of brake block device of drum-type brake.
Background technique
Generally adopt drum type braking device on electric bicycle, this device is exactly to utilize static brake block in brake drum, removes the brake drum of friction along with vehicle wheel rotation, to produce the turn a wheel braking device of Speed Reduction of frictional force.During brake, by the line of stopping, pull rocking arm to make brake block open contact brake drum inner edge and produce frictional force.
At present, when the brake block of use is static, its outer rim is a circle, and diameter is 108mm, as shown in Figure 1.The stationary axle of take under the rocking arm effect during brake opens to both sides as initial point, and now its outer rim is approximate ellipsoidal, with the surface of contact of brake drum oval two end points just, as shown in Figure 2.Now only some brake block and brake drum produce friction, and its braking effect does not reach perfect condition.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of brake block device that can improve the drum-type brake of braking effect is provided.
The technological scheme provided according to the utility model, the brake block device of described drum-type brake, it comprises two the brake block scaffolds in left and right, the upper end portion of two the brake block scaffolds in left and right is hinged by installation shaft, be provided with rocking arm between the underpart of two the brake block scaffolds in left and right, be connected with Returnning spring between the brake block scaffold of two of left and right, be fixed with left brake block on the left side wall of the brake block scaffold that is positioned at left side, be fixed with right brake block on the right side wall of the brake block scaffold that is positioned at right side, at drum-type brake when static, two sections circular arcs that the left side wall of left brake block and the right side wall of right brake block are same ellipse, and the center of installation shaft and the center of rocking arm all are positioned on the major axis of described ellipse.
At drum-type brake, when static, the left side wall of left brake block is 1.03 ~ 1.04:1 with the long axis length of the right side wall place ellipse of right brake block with the ratio of minor axis length.
The utility model is after installing and using, and the braking ability of drum type braking device obviously improves, and has improved the Safety performance of vehicle operating.
The accompanying drawing explanation
Fig. 1 is that the brake block device of drum-type brake of prior art is at the structural representation of state of rest.
Fig. 2 is the structural representation of brake block device busy state of the drum-type brake of prior art.
Fig. 3 is the structural representation of brake block of the present utility model in state of rest.
Fig. 4 is brake block of the present utility model structural representation in working order.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
The brake block device of this drum-type brake, it comprises two the brake block scaffolds 1 in left and right, the upper end portion of two the brake block scaffolds 1 in left and right is hinged by installation shaft 2, be provided with rocking arm 3 between the underpart of two the brake block scaffolds 1 in left and right, be connected with Returnning spring 4 between the brake block scaffold 1 of two of left and right, be fixed with left brake block 5 on the left side wall of the brake block scaffold 1 that is positioned at left side, be fixed with right brake block 6 on the right side wall of the brake block scaffold 1 that is positioned at right side, at drum-type brake when static, two sections circular arcs that the right side wall of the left side wall of left brake block 5 and right brake block 6 is same ellipse, and the center of the center of installation shaft 2 and rocking arm 3 all is positioned on the major axis of described ellipse.
At drum-type brake, when static, the left side wall of left brake block 5 is 1.03 ~ 1.04:1 with the long axis length of the right side wall place ellipse of right brake block 6 with the ratio of minor axis length.
At drum-type brake, when static, the long axis length of the right side wall place ellipse of the left side wall of left brake block 5 and right brake block 6 is preferably 111.6mm, and minor axis length is preferably 107.6mm.
Brake block device of the present utility model is when brake, and the outer rim after left brake block 5 opens with right brake block 6 is a circle, with brake drum, contacts fully, and braking effect improves greatly.
Claims (2)
1. the brake block device of a drum-type brake, it comprises left and right two brake block scaffolds (1), the upper end portion of two the brake block scaffolds in left and right (1) is hinged by installation shaft (2), be provided with rocking arm (3) between the underpart of two the brake block scaffolds in left and right (1), be connected with Returnning spring (4) between two the brake block scaffolds in left and right (1), be fixed with left brake block (5) on the left side wall of the brake block scaffold (1) that is positioned at left side, be fixed with right brake block (6) on the right side wall of the brake block scaffold (1) that is positioned at right side, it is characterized in that: at drum-type brake when static, two sections circular arcs that the right side wall of the left side wall of left brake block (5) and right brake block (6) is same ellipse, and the center of the center of installation shaft (2) and rocking arm (3) all is positioned on the major axis of described ellipse.
2. the brake block device of drum-type brake as claimed in claim 1, it is characterized in that: at drum-type brake, when static, the long axis length of the right side wall place ellipse of the left side wall of left brake block (5) and right brake block (6) is (1.03 ~ 1.04) with the ratio of minor axis length: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320353372.3U CN203374703U (en) | 2013-06-19 | 2013-06-19 | Brake pad device of drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320353372.3U CN203374703U (en) | 2013-06-19 | 2013-06-19 | Brake pad device of drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374703U true CN203374703U (en) | 2014-01-01 |
Family
ID=49837232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320353372.3U Expired - Fee Related CN203374703U (en) | 2013-06-19 | 2013-06-19 | Brake pad device of drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632949A (en) * | 2015-02-11 | 2015-05-20 | 江苏金麦穗新能源科技股份有限公司 | Rice straw composite material fiber friction material brake block |
| CN109383706A (en) * | 2017-08-04 | 2019-02-26 | 官焕章 | Bicycle |
-
2013
- 2013-06-19 CN CN201320353372.3U patent/CN203374703U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632949A (en) * | 2015-02-11 | 2015-05-20 | 江苏金麦穗新能源科技股份有限公司 | Rice straw composite material fiber friction material brake block |
| CN104632949B (en) * | 2015-02-11 | 2017-02-01 | 江苏金麦穗新能源科技股份有限公司 | Rice straw composite material fiber friction material brake block |
| CN109383706A (en) * | 2017-08-04 | 2019-02-26 | 官焕章 | Bicycle |
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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 |
Granted publication date: 20140101 Termination date: 20150619 |
|
| EXPY | Termination of patent right or utility model |