CN102322488B - Novel drum brake - Google Patents
Novel drum brake Download PDFInfo
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- CN102322488B CN102322488B CN 201110263455 CN201110263455A CN102322488B CN 102322488 B CN102322488 B CN 102322488B CN 201110263455 CN201110263455 CN 201110263455 CN 201110263455 A CN201110263455 A CN 201110263455A CN 102322488 B CN102322488 B CN 102322488B
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- brake
- roller
- edge face
- brake shoes
- shoes
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- 238000000034 method Methods 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention discloses a novel drum brake comprising a shell, a pair of brake shoes, a reset component and a brake arm assembly, wherein the pair of brake shoes are arranged in the shell, the reset component is connected between the pair of brake shoes, one ends of the pair of brake shoes are rotatably located in the shell, a brake wheel which is driven to rotate by the brake arm assembly is arranged between end gaps of the other ends of the pair of brake shoes, and a limiting structure for preventing a roller from dislocating is arranged on the brake wheel. In the invention, a structure for driving the brake shoes to expand inside the drum brake is improved, the work mode of directly driving the brake shoes to expand by using a cam in the traditional drum brake is changed, therefore, the abrasion is effectively reduced, the service life is prolonged, and the brake effect and safety of a car are 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 Novel drum brake, improve for the structure of rousing the internal drive brake shoes expansion of stopping, changing original drum stops and adopts cam directly to drive the working method of brake shoes expansion, effectively reduce wear, extend its working life, improve car brakeing effect and braking safety.
for solving the problems of the technologies described above, the present invention adopts following technological scheme: a kind of Novel drum brake, 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, it is characterized in that: 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, the brake shoes end face among butt of brake wheel and both sides has roller, brake wheel is provided with the limit structure that prevents the roller dislocation, described limit structure comprises the positioning plate that is located at respectively on the axial both ends of the surface of brake wheel, the two ends of described roller are provided with axial raised roll pin, described positioning plate is provided with the spacing hole that radially slides along brake wheel for roll pin, the edge of described brake wheel is provided with the spacing edge face that coordinates the butt roller with the brake shoes end face, described spacing edge face comprises the rotary actuation edge face that roller rotates and the rotational slide edge face that rolls for roller of promoting, and between described rotary actuation edge face and rotational slide edge face, arc transition is connected.
Further, described rotary actuation edge face is the arc surface of indent, and described rotational slide edge face is the arc surface of evagination.
Further, connect by axial connecting plate between two positioning plates.
Further, described spacing hole is waist shaped hole.
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.Prevent that roller is extruded between brake wheel and brake shoes end face.
Beneficial effect of the present invention:
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.
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 Novel drum brake, comprise shell 1, be located at the interior a pair of brake shoes 2 of 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, and brake wheel 7 is provided with the limit structure that prevents roller 71 dislocations.Limit structure comprises the positioning plate 50 that is located at respectively on the axial both ends of the surface of brake wheel 7, and the two ends of described roller 71 are provided with axial raised roll pin 711, and described positioning plate 50 is provided with the spacing hole 51 that radially slides along brake wheel 7 for roll pin 711; The edge of described brake wheel 7 is provided with the spacing edge face that coordinates butt roller 71 with brake shoes 2 end faces; Spacing edge face comprises the rotary actuation edge face 72 that roller 71 rotates and the rotational slide edge face 73 that rolls for roller 71 of promoting, and between described rotary actuation edge face 72 and rotational slide edge face 73, arc transition is connected; Wherein rotary actuation edge face 72 is the arc surface of indent, and described rotational slide edge face 73 is the arc surface of evagination; Connect by axial connecting plate 53 between piece positioning plate 50, spacing hole 51 adopts waist shaped hole.
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.
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.
With reference to Fig. 4, the vehicle of running at high speed is when carrying out braking, need powerful braking moment, easily cause roller 71 to be extruded internally, for avoiding this situation to occur, a side of brake shoes 2 ends arranges spacing block teeth 21, and the interior edge face of spacing block teeth 21 is the circular arc of indent, can prevent effectively that roller 71 is extruded between brake wheel 7 and brake shoes 2 end faces, thereby guarantee braking safety.
The principle of the invention:
With reference to Fig. 5,6, implement braking initial, 7 rotations of brake arm Component driver brake wheel, rotary actuation edge face 72 promote roller 71 and rotate, and roller 71 is take fulcrum A as turning point, roll gradually and enter rotational slide edge face 73, after roller 71 entered rotational slide edge face 73 fully, along with the increase of rotational slide edge face 73 radians, roller 71 strutted to both sides gradually, eject until reach the arc of rotational slide edge face 73, reach 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 (8)
1. Novel drum brake, 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), it is characterized in that: 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, brake wheel (7) has roller (71) with brake shoes (2) the end face among butt of both sides, brake wheel (7) is provided with the limit structure that prevents roller (71) dislocation, described limit structure comprises the positioning plate (50) that is located at respectively on the axial both ends of the surface of brake wheel (7), the two ends of described roller (71) are provided with axial raised roll pin (711), described positioning plate (50) is provided with the spacing hole (51) that radially slides along brake wheel (7) for roll pin (711), the edge of described brake wheel (7) is provided with the spacing edge face that coordinates butt roller (71) with brake shoes (2) end face, described spacing edge face comprises the rotary actuation edge face (72) that roller (71) rotates and the rotational slide edge face (73) that rolls for roller (71) of promoting, and between described rotary actuation edge face (72) and rotational slide edge face (73), arc transition is connected.
2. a kind of Novel drum brake according to claim 1, it is characterized in that: described rotary actuation edge face (72) is the arc surface of indent, described rotational slide edge face (73) is the arc surface of evagination.
3. a kind of Novel drum brake according to claim 1, is characterized in that: connect by axial connecting plate (53) between two positioning plates (50).
4. a kind of Novel drum brake according to claim 1, it is characterized in that: described spacing hole (51) is waist shaped hole.
5. a kind of Novel drum brake according to claim 1, it is characterized in that: described brake arm assembly comprises brake rocker (41) and the live axle (42) that is connected with brake rocker (41), and described live axle (42) one ends run through and connect brake wheel (7) and two positioning plates (50).
6. a kind of Novel drum brake according to claim 5, 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 (52) 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).
7. a kind of Novel drum brake according to claim 6 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.
8. a kind of Novel drum brake according to claim 1 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 201110263455 CN102322488B (en) | 2011-09-07 | 2011-09-07 | Novel drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110263455 CN102322488B (en) | 2011-09-07 | 2011-09-07 | Novel drum brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102322488A CN102322488A (en) | 2012-01-18 |
| CN102322488B true CN102322488B (en) | 2013-06-05 |
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ID=45450292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110263455 Active CN102322488B (en) | 2011-09-07 | 2011-09-07 | Novel drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322488B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588471A (en) * | 2012-03-12 | 2012-07-18 | 许志明 | Safe 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 |
| CN108825680A (en) * | 2018-08-09 | 2018-11-16 | 郭千华 | A kind of drum brake |
| CN113294458A (en) * | 2021-05-24 | 2021-08-24 | 仇梅惠 | Improved drum brake structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433140Y (en) * | 2000-07-22 | 2001-06-06 | 谢新庭 | Collinear equipollent driving device of floating camshaft type brake shoe |
| CN2680926Y (en) * | 2004-03-10 | 2005-02-23 | 梁育红 | Floating type adjustment-free automobile brake |
| US7175009B2 (en) * | 2004-07-20 | 2007-02-13 | Bendix Spicer Foundation Brake Llc | Cam actuated drum brake |
| JP2006090535A (en) * | 2004-09-27 | 2006-04-06 | Hosei Brake Ind Ltd | Drum brake |
| AT8926U1 (en) * | 2005-11-14 | 2007-02-15 | Magna Drivetrain Ag & Co Kg | DRUM BRAKE WITH FORCE COMPENSATED |
| CN202266615U (en) * | 2011-09-07 | 2012-06-06 | 许志明 | Novel drum brake |
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2011
- 2011-09-07 CN CN 201110263455 patent/CN102322488B/en active Active
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| Publication number | Publication date |
|---|---|
| CN102322488A (en) | 2012-01-18 |
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| C14 | Grant of patent or utility model | ||
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Owner name: CHANGXIN HUAYI MACHINERY CO., LTD. Free format text: FORMER OWNER: XU ZHIMING Effective date: 20140424 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140424 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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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: 20120118 Assignee: Zhejiang Luyuan Electric Vehicle Co., Ltd. Assignor: Changxin Lola mechanical and Electrical Co., Ltd. Contract record no.: X2019330000002 Denomination of invention: Novel drum brake 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 |