CN102305252A - Improved drum brake structure - Google Patents
Improved drum brake structure Download PDFInfo
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- CN102305252A CN102305252A CN201110267286A CN201110267286A CN102305252A CN 102305252 A CN102305252 A CN 102305252A CN 201110267286 A CN201110267286 A CN 201110267286A CN 201110267286 A CN201110267286 A CN 201110267286A CN 102305252 A CN102305252 A CN 102305252A
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- 238000005096 rolling process Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention discloses an improved drum brake structure which comprises a shell, a pair of brake shoes arranged in the shell, a resetting element and a brake arm assembly, wherein the resetting element is connected with the pair of brake shoes; one end of each brake shoe is rotatably positioned in the shell, and a gap between the other ends of the brake shoes is provided with a brake wheel driven to rotate by the brake arm assembly; a pin roller is respectively abutted and connected between the brake wheel and the end surfaces of the brake shoes on two sides; locating plates are arranged on the two axial end surfaces of the brake wheel, and the pin roller is rotatably positioned between the two locating plates; the edge of the brake wheel is provided with a limiting edge face which is matched with the end surface of the brake shoes to be abutted with the pin roller; and a rolling meshing structure is arranged between the limiting edge face and the pin roller. According to the improved structure provided by the invention, the phenomenon that the original drum brake adopts the working mode of directly driving the brake shoes to expand by a cam is changed, and the shortages of poor brake effect and long vehicle brake sliding distance of the existing drum brake can be effectively improved.
Description
Technical field
The present invention relates to a kind of drum stops.
Background technique
Drum is stopped and has been applied in above the automobile nearly centurial history, but because its reliability and powerful braking force make drum brakes still be configured on many vehicles now.As shown in Figure 1, the most existing drum is stopped and mainly is made up of shell 01, a pair of brake shoes 02, brake cam 05, brake rocker 03 and reset components 04.During braking, brake rocker drives brake cam and rotates, and brake cam forces brake shoes 02 expansion and contacts with shell 01, produces friction and then realizes brake, after the end of braking, relies on reset components that brake shoes 02 is retracted original position.In the braking process; Between brake shoes 02 and shell 01, produce the wearing and tearing; Can produce wearing and tearing equally between brake cam and the brake shoes; And these wearing and tearing concentrate on the several points or face of brake cam all the time; Greatly shortened the working life of brake cam; In addition, existing drum is stopped and is also existed braking moment little, the shortcoming that braking effect is poor, the car brakeing coasting distance is big.Technician's improvement of stopping to drum at present mainly concentrates on brake shoes and the shell, to brake cam and to drive the architecture advances of brake shoes expansion very few for it, therefore rouses the existing above-mentioned defective of stopping and fails effectively to be solved always.
Summary of the invention
Problem to be solved by this invention just provides a kind of drum improvement structure of stopping, and changes original drum and stops and adopt cam directly to drive the working method of brake shoes expansion, effectively improves existing drum braking weak effect, shortcoming that the car brakeing coasting distance is big.
For solving the problems of the technologies described above; The present invention adopts following technological scheme: a kind of drum improvement structure of stopping; Comprise shell; Be located at a pair of brake shoes in the shell; Be connected this to reposition element between the brake shoes and brake arm assembly; This to an end rotating position of brake shoes in the enclosure; Be provided with brake wheel between this end gap by brake arm assembly rotary driving to the brake shoes the other end; It is characterized in that: each butt has roller between the brake shoes end face of brake wheel and both sides; The axial both ends of the surface of said brake wheel are provided with positioning plate; Said roller rotating position is between two positioning plates; The edge of brake wheel is provided with the spacing edge face that cooperates the butt roller with the brake shoes end face, is provided with the rolling meshing engagement structure between said spacing edge face and the roller.
Further, said spacing edge face comprises that the rotation that promotes the roller rotation drives the rotation rolling edge face of edge face and the rolling of confession roller, and it is the arc surface of indent that said rotation drives the edge face, and said rotation rolling edge face is the arc surface of evagination; The rolling meshing engagement structure is arranged between rotation rolling edge face and the roller.
Further, be designed to gear hobbing face with the corresponding position of rotation rolling edge face on the periphery of said roller, rotation rolling edge face is designed to the tooth bar face, and gear hobbing face constitutes the rolling meshing engagement structure with the tooth bar face.
Further, the two ends of said roller are provided with axial raised roll pin, and said positioning plate is provided with and supplies roll pin along spacing waist hole that brake wheel radially slides.
Further, said brake arm assembly comprises brake rocker and the live axle that is connected with brake rocker, and said live axle one end runs through and connects brake wheel and two positioning plates.
Further; The part that said live axle runs through brake wheel and two positioning plates is a cuboid; The positioning plate center has two fan-shaped positioning holes that communicate and is used to cooperate cuboid to realize the spacing rotation of two positioning plates, wherein is provided with the elastic reset structure between a positioning plate and the driveshaft end; In braking or the braking releasing process, the elastic reset structure acts on roller through positioning plate, makes to have the restoring force that the rotation pointed to drives the edge face on the roller all the time.
Further, said elastic reset structure is the torsion spring of cross-under between positioning plate and driveshaft end.
Further, a side of said brake shoes end is provided with spacing block teeth, and the interior edge face of spacing block teeth is the circular arc of indent.Utilize spacing block teeth better to limit roller, prevent its dislocation.
Beneficial effect of the present invention:
1, original drum is stopped and is adopted cam directly to drive the brake shoes expansion, produces sliding friction between cam and the brake shoes, and friction concentrates on the several points or face of cam all the time, causes cam wear serious, thereby shortens its working life; Principle of the present invention is: the brake arm assembly drives the brake wheel rotation; Brake wheel outwards pushes against roller; Drive the brake shoes expansion by roller; The friction that produces between roller and brake wheel and the brake shoes end face belongs to rolling friction; It is much smaller that its frictional force is compared sliding friction, and fretting wear is not concentrated on certain several point or face of roller, thereby reduced the wearing and tearing of component; Feasible drum still has insensitivity preferably after stopping and using for a long time, has prolonged the working life that drum is stopped; In addition, adopt roller to drive brake shoes, increased braking moment, the vehicle braked effect is strengthened, and the braking coasting distance shortens greatly;
2, brake wheel and roller adopt the rolling engagement driving, can better prevent the roller dislocation, and improve the stationarity of roller motion, improve the insensitivity that drum is stopped then.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further explanation:
The structural representation that Fig. 1 stops for existing drum;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the assembling schematic representation of brake wheel, the gaily decorated basket, roller;
Fig. 4 is a preferred structure schematic representation of the present invention;
Fig. 5 is a principle schematic one of the present invention;
Fig. 6 is a principle schematic two of the present invention.
Embodiment
With reference to Fig. 2-3; A kind of drum improvement structure of stopping; Comprise shell 1; Be located at a pair of brake shoes 2 in the shell 1; Be connected this to reposition element between the brake shoes 23 and brake arm assembly; This to an end rotating position of brake shoes 2 in shell 1; Be provided with brake wheel 7 between this end gap by brake arm assembly rotary driving to brake shoes 2 the other ends; Each butt has roller 71 between brake shoes 2 end faces of brake wheel 7 and both sides; Said brake wheel 7 axial both ends of the surface are provided with positioning plate 50; Said roller 71 rotating position are between two positioning plates 50; The edge of brake wheel 7 is provided with the spacing edge face that cooperates butt roller 71 with brake shoes 2 end faces; The two ends of roller 71 are provided with axial raised roll pin 711, and said positioning plate 50 is provided with and supplies roll pin 711 along spacing waist hole 51 that brake wheel 7 radially slides; Spacing edge face comprises the rotation rolling edge face 73 that the rotation that promotes roller 71 rotations drives edge face 72 and supplies roller 71 to roll, and it is the arc surface of indent that said rotation drives edge face 72, and said rotation rolling edge face 73 is the arc surface of evagination.
The brake arm assembly comprises brake rocker 41 and the live axle 42 that is connected with brake rocker 41, and said live axle 42 1 ends run through and connect brake wheel 7 and two positioning plates 50.
With reference to Fig. 4; The part that live axle 42 runs through brake wheel 7 and two positioning plates 50 is a cuboid 421; Positioning plate 50 centers have the spacing rotation that two fan-shaped positioning holes 52 that communicate are used to cooperate two positioning plates 50 of cuboid 421 realizations, wherein are provided with the elastic reset structure between a positioning plate 50 and live axle 42 ends; In braking or the braking releasing process, the elastic reset structure acts on roller 71 through positioning plate 50, makes to have the restoring force that the rotation pointed to drives edge face 72 on the roller 71 all the time.
The elastic reset structure is the torsion spring 6 of cross-under between positioning plate 50 and live axle 42 ends.
In order better to prevent roller 71 dislocations; And the stationarity of raising roller 71 motions; The periphery of roller 71 is designed to gear hobbing face with rotation rolling edge face 73 corresponding positions; And rotation rolling edge face 73 is designed to the tooth bar face; Gear hobbing face constitutes the rolling meshing engagement structure with the tooth bar face; Be similar to gear & rack structure, have reliable operation, efficient height, long characteristics of life-span.Also spacing block teeth 21 can be set in a side of brake shoes 2 ends, the interior edge face of spacing block teeth 21 is the circular arc of indent, utilizes spacing block teeth can better limit roller 71, prevents its dislocation.
The principle of the invention:
With reference to Fig. 5,6; It is initial to implement braking; The brake arm assembly drives brake wheel 7 rotations; Rotation drives edge face 72 promotion rollers 71 and rotates its entering rotation rolling edge face 73 that rolls gradually that makes; Increase along with rotation rolling edge face 73 radians; Roller 71 struts to both sides gradually, ejects until the arc that reaches rotation rolling edge face 73, reaches maximum braking moment.Can know from above-mentioned principle: the friction that produces between roller 71 and brake wheel 7 and brake shoes 2 end faces belongs to rolling friction; It is much smaller that its frictional force is compared sliding friction; And fretting wear is not concentrated on certain several point or face of roller 71; Thereby the wearing and tearing of component have been reduced; Feasible drum still has insensitivity preferably after stopping and using for a long time, has prolonged the working life that drum is stopped; In addition, adopt roller 71 to drive brake shoes 2, increased braking moment, the vehicle braked effect is strengthened, and the braking coasting distance shortens greatly.
Outside the above preferred embodiment, the present invention also has other mode of execution, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to the defined scope of accompanying claims of the present invention.
Claims (7)
1. drum improvement structure of stopping; Comprise shell (1); Be located at a pair of brake shoes (2) in the shell (1); Be connected this to reposition element (3) and brake arm assembly between the brake shoes (2); This to an end rotating position of brake shoes (2) in shell (1); Be provided with brake wheel (7) between this end gap by brake arm assembly rotary driving to brake shoes (2) the other end; It is characterized in that: each butt has roller (71) between brake shoes (2) end face of brake wheel (7) and both sides; Said brake wheel (7) axially both ends of the surface is provided with positioning plate (50); Said roller (71) rotating position is between two positioning plates (50); The edge of brake wheel (7) is provided with the spacing edge face that cooperates butt roller (71) with brake shoes (2) end face, is provided with the rolling meshing engagement structure between said spacing edge face and the roller (71).
2. a kind of drum according to claim 1 improvement structure of stopping; It is characterized in that: said spacing edge face comprises that the rotation that promotes roller (71) rotation drives the rotation rolling edge face (73) of edge face (72) and confession roller (71) rolling; It is the arc surface of indent that said rotation drives edge face (72), and said rotation rolling edge face (73) is the arc surface of evagination; The rolling meshing engagement structure is arranged between rotation rolling edge face (73) and the roller (71).
3. a kind of drum according to claim 2 improvement structure of stopping; It is characterized in that: be designed to gear hobbing face with the corresponding position of rotation rolling edge face (73) on the periphery of said roller (71); Rotation rolling edge face (73) is designed to the tooth bar face, and gear hobbing face constitutes the rolling meshing engagement structure with the tooth bar face.
4. according to claim 1 or the 2 or 3 described a kind of drums improvement structure of stopping; It is characterized in that: the live axle (42) that said brake arm assembly comprises brake rocker (41) and is connected with brake rocker, said live axle (42) one ends run through and connect brake wheel (7) and two positioning plates (50).
5. a kind of drum according to claim 4 improvement structure of stopping; It is characterized in that: the part that said live axle (42) runs through brake wheel (7) and two positioning plates (50) is cuboid (421); Positioning plate (50) center has two fan-shaped positioning holes that communicate and is used to cooperate cuboid (421) to realize the spacing rotation of two positioning plates (50), wherein is provided with the elastic reset structure between a positioning plate (50) and live axle (42) end; In braking or the braking releasing process, the elastic reset structure acts on roller (71) through positioning plate (50), makes to have the restoring force that the rotation pointed to drives edge face (72) on the roller (71) all the time.
6. a kind of drum according to claim 5 improvement structure of stopping, it is characterized in that: said elastic reset structure is the torsion spring (6) of cross-under between positioning plate (50) and live axle (42) end.
7. according to claim 1 or the 2 or 3 described a kind of drums improvement structure of stopping, it is characterized in that: a side of said brake shoes (2) end is provided with spacing block teeth (21), and the interior edge face of spacing block teeth (21) is the circular arc of indent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110267286 CN102305252B (en) | 2011-09-09 | 2011-09-09 | Improved drum brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110267286 CN102305252B (en) | 2011-09-09 | 2011-09-09 | Improved drum brake structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102305252A true CN102305252A (en) | 2012-01-04 |
| CN102305252B CN102305252B (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110267286 Active CN102305252B (en) | 2011-09-09 | 2011-09-09 | Improved drum brake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102305252B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588471A (en) * | 2012-03-12 | 2012-07-18 | 许志明 | Safe drum brake |
| CN104179852A (en) * | 2014-08-15 | 2014-12-03 | 长兴华亿机电有限公司 | Safety braking drum brake |
| CN104179851A (en) * | 2014-08-15 | 2014-12-03 | 长兴华亿机电有限公司 | Drum brake |
| CN104613102A (en) * | 2015-02-13 | 2015-05-13 | 长兴华亿机电有限公司 | Drum brake |
| CN104653662A (en) * | 2015-02-11 | 2015-05-27 | 温州智创科技有限公司 | Drum brake |
| CN110608244A (en) * | 2018-06-15 | 2019-12-24 | 北汽福田汽车股份有限公司 | Drum brake and vehicle |
| CN112572679A (en) * | 2020-12-16 | 2021-03-30 | 摩拜(北京)信息技术有限公司 | Brake device and shared vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228867Y (en) * | 1995-07-18 | 1996-06-12 | 郭翠波 | Hand brake for rear axle of car |
| WO1999028649A1 (en) * | 1997-12-01 | 1999-06-10 | Robert Bosch Technology Corporation | Electro-mechanical actuator for a drum brake |
| CN101728998A (en) * | 2008-10-21 | 2010-06-09 | 株式会社万都 | Electronic mechanical drum brake |
| CN201588892U (en) * | 2009-11-21 | 2010-09-22 | 任秀军 | Improved structure of drum brake of car |
| CN201599348U (en) * | 2009-10-14 | 2010-10-06 | 毕大宁 | Electric drum brake |
| CN202266616U (en) * | 2011-09-09 | 2012-06-06 | 许志明 | Improved structure of drum brake |
-
2011
- 2011-09-09 CN CN 201110267286 patent/CN102305252B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228867Y (en) * | 1995-07-18 | 1996-06-12 | 郭翠波 | Hand brake for rear axle of car |
| WO1999028649A1 (en) * | 1997-12-01 | 1999-06-10 | Robert Bosch Technology Corporation | Electro-mechanical actuator for a drum brake |
| CN101728998A (en) * | 2008-10-21 | 2010-06-09 | 株式会社万都 | Electronic mechanical drum brake |
| CN201599348U (en) * | 2009-10-14 | 2010-10-06 | 毕大宁 | Electric drum brake |
| CN201588892U (en) * | 2009-11-21 | 2010-09-22 | 任秀军 | Improved structure of drum brake of car |
| CN202266616U (en) * | 2011-09-09 | 2012-06-06 | 许志明 | Improved structure of drum brake |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588471A (en) * | 2012-03-12 | 2012-07-18 | 许志明 | Safe drum brake |
| CN104179852A (en) * | 2014-08-15 | 2014-12-03 | 长兴华亿机电有限公司 | Safety braking drum brake |
| CN104179851A (en) * | 2014-08-15 | 2014-12-03 | 长兴华亿机电有限公司 | Drum brake |
| CN104179852B (en) * | 2014-08-15 | 2016-09-07 | 长兴华亿机电有限公司 | The drum of a kind of safety arrestment is stopped |
| CN104179851B (en) * | 2014-08-15 | 2016-09-07 | 长兴华亿机电有限公司 | A kind of drum is stopped |
| CN104653662A (en) * | 2015-02-11 | 2015-05-27 | 温州智创科技有限公司 | Drum brake |
| CN104653662B (en) * | 2015-02-11 | 2016-04-06 | 温州智创科技有限公司 | A kind of drum is stopped |
| CN104613102A (en) * | 2015-02-13 | 2015-05-13 | 长兴华亿机电有限公司 | Drum brake |
| CN110608244A (en) * | 2018-06-15 | 2019-12-24 | 北汽福田汽车股份有限公司 | Drum brake and vehicle |
| CN112572679A (en) * | 2020-12-16 | 2021-03-30 | 摩拜(北京)信息技术有限公司 | Brake device and shared vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102305252B (en) | 2013-06-05 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGXIN HUAYI MACHINERY CO., LTD. Free format text: FORMER OWNER: XU ZHIMING Effective date: 20140509 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140509 Address after: 313117 Zhejiang city of Huzhou province Changxing County coal town of Xinmin Village Patentee after: CHANGXING HUAYI ELECTROMECHANICAL CO., LTD. Address before: 313117 Zhejiang city of Huzhou province Changxing County coal town of Xinmin Village Patentee before: Xu Zhiming |
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| CP03 | Change of name, title or address |
Address after: 313117 Industrial Park, Changxing County Town, Changxing County, Huzhou Patentee after: Changxin Lola mechanical and Electrical Co., Ltd. Address before: 313117 Xinmin village, coal Hill Town, Changxing County, Huzhou, Zhejiang Patentee before: CHANGXING HUAYI ELECTROMECHANICAL CO., LTD. |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120104 Assignee: Zhejiang Luyuan Electric Vehicle Co., Ltd. Assignor: Changxin Lola mechanical and Electrical Co., Ltd. Contract record no.: X2019330000002 Denomination of invention: Improved drum brake structure Granted publication date: 20130605 License type: Exclusive License Record date: 20190808 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Zhejiang Lvyuan Electric Vehicle Co.,Ltd. Assignor: CHANGXING LUOLA ELECTROMECHANICAL Co.,Ltd. Contract record no.: X2019330000002 Date of cancellation: 20210712 |