CN102305252B - Improved drum brake structure - Google Patents
Improved drum brake structure Download PDFInfo
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- CN102305252B CN102305252B CN 201110267286 CN201110267286A CN102305252B CN 102305252 B CN102305252 B CN 102305252B CN 201110267286 CN201110267286 CN 201110267286 CN 201110267286 A CN201110267286 A CN 201110267286A CN 102305252 B CN102305252 B CN 102305252B
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- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
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- 230000007547 defect 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 automobile nearly centurial history, but due to its reliability and powerful braking force, makes drum brakes still be configured on many vehicles now.As shown in Figure 1, existing most of drum is stopped and mainly is comprised 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 end of braking, relies on reset components that brake shoes 02 is retracted original position.In braking process, produce wearing and tearing between brake shoes 02 and shell 01, can produce wearing and tearing equally between brake cam and brake shoes, and these wearing and tearing concentrate on 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 large.The improvement that present technician stops for drum mainly concentrates on brake shoes and shell, and is very few for it for the architecture advances of brake cam and the expansion of driving brake shoes, therefore rouses the existing defects of stopping and fails effectively to be solved always.
Summary of the invention
Problem to be solved by this invention just is to provide 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 large.
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 shell, be connected to this to the reposition element between brake shoes and brake arm assembly, this to an end rotating position of brake shoes in the enclosure, be provided with the brake wheel by the rotation of brake arm Component driver between this end gap to the brake shoes the other end, it is characterized in that: the brake shoes end face among butt of brake wheel and both sides has roller, the axial both ends of the surface of described brake wheel are provided with positioning plate, described roller rotating position is between two positioning plates, the edge of brake wheel is provided with the spacing edge face that coordinates the butt roller with the brake shoes end face, be provided with the rolling meshing engagement structure between described spacing edge face and roller.
Further, described spacing edge face comprises the rotary actuation edge face that promotes the roller rotation and the rotary rolling edge face that rolls for roller, and described rotary actuation edge face is the arc surface of indent, and described rotary rolling edge face is the arc surface of evagination; The rolling meshing engagement structure is arranged between rotary rolling edge face and roller.
Further, position corresponding with rotary rolling edge face on the periphery of described roller is designed to gear hobbing face, and rotary rolling edge face is designed to the tooth bar face, and gear hobbing face consists of the rolling meshing engagement structure with the tooth bar face.
Further, the two ends of described roller are provided with axial raised roll pin, and described positioning plate is provided with for roll pin along spacing waist hole that brake wheel radially slides.
Further, described brake arm assembly comprises brake rocker and the live axle that is connected with brake rocker, and described live axle one end runs through and connects brake wheel and two positioning plates.
Further, the part that described live axle runs through brake wheel and two positioning plates is cuboid, the positioning plate center has two fan-shaped positioning holes that communicate and is used for coordinating cuboid to realize the rotation-limited of two positioning plates, wherein is provided with the elastic reset structure between a positioning plate and driveshaft end; In braking or braking releasing process, the elastic reset structure acts on roller by positioning plate, makes to have all the time the restoring force that points to rotary actuation edge face on roller.
Further, described elastic reset structure is the torsion spring of cross-under between positioning plate and driveshaft end.
Further, a side of described 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 brake shoes, and friction concentrates on 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 rotation of brake arm Component driver brake wheel, brake wheel outwards pushes against roller, drive the brake shoes expansion by roller, the friction that produces between roller and brake wheel and 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, make drum stop and still have insensitivity preferably after use for a long time, extended the working life that drum is stopped; In addition, adopt roller to drive brake shoes, increased braking moment, the braking effect of vehicle 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, then improve the insensitivity that drum is stopped.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing:
The structural representation that Fig. 1 stops for existing drum;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the assembling schematic diagram of brake wheel, the gaily decorated basket, roller;
Fig. 4 is preferred structure schematic diagram of the present invention;
Fig. 5 is principle schematic one of the present invention;
Fig. 6 is 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 shell 1, be connected to this to the reposition element 3 between brake shoes 2 and brake arm assembly, this to an end rotating position of brake shoes 2 in shell 1, be provided with the brake wheel 7 by the rotation of brake arm Component driver between this end gap to brake shoes 2 the other ends, brake wheel 7 has roller 71 with the brake shoes 2 end face among butts of both sides, the axial both ends of the surface of described brake wheel 7 are provided with positioning plate 50, described roller 71 rotating position are between two positioning plates 50, the edge of brake wheel 7 is provided with the spacing edge face that coordinates butt roller 71 with brake shoes 2 end faces, the two ends of roller 71 are provided with axial raised roll pin 711, described positioning plate 50 is provided with the spacing waist hole 51 that radially slides along brake wheel 7 for roll pin 711, spacing edge face comprises the rotary actuation edge face 72 that promotes roller 71 rotations and the rotary rolling edge face 73 that rolls for roller 71, and described rotary actuation edge face 72 is the arc surface of indent, and described rotary 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 described 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 cuboid 421, positioning plate 50 centers have two fan-shaped positioning holes that communicate 52 and are used for coordinating cuboid 421 to realize the rotation-limited of two positioning plates 50, wherein are provided with the elastic reset structure between a positioning plate 50 and live axle 42 ends; In braking or braking releasing process, the elastic reset structure acts on roller 71 by positioning plate 50, makes to have all the time the restoring force that points to rotary actuation edge face 72 on roller 71.
The torsion spring 6 that the elastic reset structure is 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 position that the periphery of roller 71 is corresponding with rotary rolling edge face 73 is designed to gear hobbing face, and rotary rolling edge face 73 is designed to the tooth bar face, gear hobbing face consists of the rolling meshing engagement structure with the tooth bar face, be similar to gear ﹠ rack structure, have the advantages that reliable operation, efficient are high, the life-span is long.Also can spacing block teeth 21 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, implement braking initial, 7 rotations of brake arm Component driver brake wheel, 72 promotion rollers 71 rotations of rotary actuation edge face are rolled gradually it and are entered rotary rolling edge face 73, increase along with rotary rolling edge face 73 radians, roller 71 struts to both sides gradually, ejects until reach the arc of rotary rolling edge face 73, reaches maximum braking moment.From above-mentioned principle as can be known: 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, make drum stop and still have insensitivity preferably after use for a long time, extended the working life that drum is stopped; In addition, adopt roller 71 to drive brake shoes 2, increased braking moment, the braking effect of vehicle is strengthened, and the braking coasting distance shortens greatly.
Outside above preferred embodiment, the present invention also has other mode of execution, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise break away from spirit of the present invention, all should belong to the defined scope of 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 shell (1), be connected to this to reposition element (3) and brake arm assembly between brake shoes (2), this to an end rotating position of brake shoes (2) in shell (1), be provided with the brake wheel (7) by the rotation of brake arm Component driver between this end gap to brake shoes (2) the other end, it is characterized in that: brake wheel (7) has roller (71) with brake shoes (2) the end face among butt of both sides, described brake wheel (7) axially both ends of the surface is provided with positioning plate (50), described roller (71) rotating position is between two positioning plates (50), the edge of brake wheel (7) is provided with the spacing edge face that coordinates butt roller (71) with brake shoes (2) end face, be provided with the rolling meshing engagement structure between described spacing edge face and roller (71).
2. a kind of drum according to claim 1 improvement structure of stopping, it is characterized in that: described spacing edge face comprises the rotary actuation edge face (72) that promotes roller (71) rotation and the rotary rolling edge face (73) that rolls for roller (71), described rotary actuation edge face (72) is the arc surface of indent, and described rotary rolling edge face (73) is the arc surface of evagination; The rolling meshing engagement structure is arranged between rotary rolling edge face (73) and roller (71).
3. a kind of drum according to claim 2 improvement structure of stopping, it is characterized in that: position corresponding with rotary rolling edge face (73) on the periphery of described roller (71) is designed to gear hobbing face, rotary rolling edge face (73) is designed to the tooth bar face, and gear hobbing face consists of the rolling meshing engagement structure with the tooth bar face.
4. according to claim 1 and 2 or 3 described a kind of drums improvement structure of stopping, it is characterized in that: the live axle (42) that described brake arm assembly comprises brake rocker (41) and is connected with brake rocker, described 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 described 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 be used for to coordinate cuboid (421) to realize the rotation-limited 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 braking releasing process, the elastic reset structure acts on roller (71) by positioning plate (50), makes to have all the time the restoring force that points to rotary actuation edge face (72) on roller (71).
6. a kind of drum according to claim 5 improvement structure of stopping is characterized in that: the torsion spring (6) that described elastic reset structure is cross-under between positioning plate (50) and live axle (42) end.
7. according to claim 1 and 2 or 3 described a kind of drums improvement structure of stopping is characterized in that: a side of described 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 CN102305252A (en) | 2012-01-04 |
| CN102305252B true 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 |
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| Country | Link |
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| CN (1) | CN102305252B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588471A (en) * | 2012-03-12 | 2012-07-18 | 许志明 | Safe 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 |
| 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 |
| CN110608244B (en) * | 2018-06-15 | 2020-12-08 | 北汽福田汽车股份有限公司 | Drum brake and vehicle |
| CN112572679B (en) * | 2020-12-16 | 2022-05-10 | 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 |
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| Publication number | Publication date |
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| CN102305252A (en) | 2012-01-04 |
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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 | ||
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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 |