CN105257733A - Drum brake - Google Patents
Drum brake Download PDFInfo
- Publication number
- CN105257733A CN105257733A CN201510743332.3A CN201510743332A CN105257733A CN 105257733 A CN105257733 A CN 105257733A CN 201510743332 A CN201510743332 A CN 201510743332A CN 105257733 A CN105257733 A CN 105257733A
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- China
- Prior art keywords
- brake
- cam
- angle
- drum
- plate group
- 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.)
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Abstract
The invention discloses a drum brake which is mainly composed of a brake cover, a shoe set, a brake rod and a cam. The cam is fixedly connected with the brake rod and can rotate in the plane of the brake cover along with the brake rod. The upper end of the shoe set is fixed to the brake cover through fixing pins. Friction plates are arranged on the periphery of the shoe set. The upper end and the lower end of the shoe set are provided with return springs respectively. An included angle is formed between the cam and the diameter line of the portion, radially corresponding to the cam, of the brake cover and ranges from 5 degrees to 55 degrees. The length of the cam ranges from 17 mm to 25 mm, and the width ranges from 13 mm to 20 mm. The length of the fixed connection pieces ranges from 16 mm to 20 mm and the width ranges from 10 mm to 14 mm. According to the drum brake, a traditional vertical cam inclines by 5 degrees to 55 degrees, and large-range separation can be generated for the shoe set by rotating the cam by a small angle in the braking process; compared with a traditional drum brake, the brake stroke of the brake is reduced, and a spare stroke space is reserved; and due to the fact that the brake stroke of the brake is reduced, the friction loss of the friction plates is reduced greatly, and the service life of the brake is prolonged greatly.
Description
Technical field
The invention discloses a kind of drum to stop, the drum referred more particularly to for electric motor car is stopped.
Background technique
It is utilize brake shoes to contact brake drum Inner edge when braking that drum is stopped, and the frictional force produced by contact is to suppress tyre rotation to reach brake object.Traditional electric motor vehicle drum brake is primarily of parts compositions such as braking top, shoe plate group, cam, brake lever, and cam and fixing pin are point-blank.Certain angle is rotated by brake lever band moving cam, shoe plate group is expanded outwardly, thus reach brake object, traditional cam is vertically arranged, even if rotate larger angle, the scope that shoe plate group expands outwardly is also very micro-, is reflected in practical application, needs to hold more greatly the power of stopping and just can reach required braking effect.Moreover owing to rotating larger angle, make friction plate frictional wear serious, the friction plate life-span has a strong impact on.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of drum that can reduce skidding stroke and stops.
In order to solve the problems of the technologies described above, the invention provides a kind of drum to stop, primarily of lid of stopping, shoe plate group, brake lever and cam composition, cam is fixedly connected with brake lever and can with brake lever at lid rotation with in surface of stopping, shoe plate group upper end is fixed on to stop by fixing pin and is covered, shoe plate group periphery is provided with friction plate, described shoe plate group top and bottom are respectively equipped with return spring, described cam and its position the radial corresponding diameter line covered of stopping be an angle, this angle is 5-55 °, described cam length is 17-25mm, width is 13-20mm, fixed tabs length is 16-20mm, width is 10-14mm.
Further improve as of the present invention, described cam and the diameter line covered of stopping corresponding to its position are an angle, and this angle is 5-35 °.
Further improve as of the present invention, described cam and the diameter line covered of stopping corresponding to its position are an angle, and this angle is 36-55 °.
Further improve as of the present invention, described shoe plate group lower end is respectively equipped with fixed tabs, and fixed tabs is fitted respectively with the left and right both sides of the cam under static state respectively
Adopt said structure, its beneficial effect is: this drum is stopped by the cam inclination 5-55 ° arranged by conventional vertical, during brake, cam rotates less angle can make the generation of shoe plate group compared with the separation of large scale, namely stop compared to traditional drum, reduce the braking distance of brake, leave stroke space for subsequent use.Due to the reduction of the braking distance of brake, friction plate frictional wear is significantly reduced, extends the working life of brake greatly.And the drum being applicable to large gauge model when cam angle of inclination increases is stopped.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention's drum is stopped.
Fig. 2 is that traditional drum is stopped structural representation.
In figure: 1-stops lid, 2-shoe plate group, 3-brake lever, 4-cam, 5-fixing pin, 6-friction plate, 7-return spring, 8-fixed tabs.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Embodiment one:
As Fig. 1, shown in 2, a kind of drum is stopped, primarily of lid 1 of stopping, shoe plate group 2, brake lever 3 and cam 4 form, cam 4 is fixedly connected with brake lever 3 and can with brake lever 3 at lid 1 rotation with in surface of stopping, shoe plate group 2 upper end is fixed on by fixing pin 5 and is stopped on lid 1, shoe plate group 2 periphery is provided with friction plate 6, shoe plate group 2 top and bottom are respectively equipped with return spring 7, cam 4 and its position the diameter line of radial corresponding lid 1 of stopping be an angle, this angle is 5-55 °, cam 3 length is 17-25mm, width is 13-20mm, fixed tabs 8 length is 16-20mm, width is 10-14mm.Shoe plate group 2 lower end is respectively equipped with fixed tabs 8, and fixed tabs 8 is fitted respectively with the left and right both sides of the cam 4 under static state respectively.
To be tilted 5-55 ° by the cam 4 that conventional vertical is arranged, can be learnt by geometry principle, the cam 4 be obliquely installed rotates less angle can make shoe plate group 2 produce separation compared with large scale.Laboratory data shows, shoe plate group 2 is separated same distance each other, the angle that the cam 4 be obliquely installed rotates is the 1/6-2/3 of cam 4 rotation angles vertically arranged, thus the present invention stops compared to traditional drum, when reaching same braking effect, skidding stroke reduces greatly, and the required power of stopping of manually holding reduces greatly.Thus, this drum is used to stop safety and reliability.Due to the reduction of the braking distance of brake, friction plate frictional wear is significantly reduced, extends the working life of brake greatly.
Embodiment two:
Cam 4 is an angle with the diameter line of the lid 1 of stopping corresponding to its position, and this angle is 5-35 °.Can be learnt by geometry principle, the cam 4 be obliquely installed rotates less angle can make shoe plate group 2 produce separation compared with large scale.Laboratory data shows, shoe plate group 2 is separated same distance each other, the angle that the cam 4 be obliquely installed rotates is the 1/6-1/2 of cam 4 rotation angles vertically arranged, thus the present invention stops compared to traditional drum, when reaching same braking effect, skidding stroke reduces greatly, and the required power of stopping of manually holding reduces greatly.Thus, this drum is used to stop safety and reliability.Due to the reduction of the braking distance of brake, friction plate frictional wear is significantly reduced, extends the working life of brake greatly.
Embodiment three:
Cam 4 is an angle with the diameter line of the lid 1 of stopping corresponding to its position, and this angle is 36-55 °, can be learnt by geometry principle, and the cam 4 be obliquely installed rotates less angle can make shoe plate group 2 produce separation compared with large scale.Laboratory data shows, shoe plate group 2 is separated same distance each other, the angle that the cam 4 be obliquely installed rotates is the 1/4-2/3 of cam 4 rotation angles vertically arranged, thus the present invention stops compared to traditional drum, when reaching same braking effect, skidding stroke reduces greatly, and the required power of stopping of manually holding reduces greatly.Thus, this drum is used to stop safety and reliability.Due to the reduction of the braking distance of brake, friction plate frictional wear is significantly reduced, extends the working life of brake greatly.
Any employing and the similar drum designed by technical characteristics of the present invention are stopped and will be fallen within protection scope of the present invention.
Claims (4)
1. a drum is stopped, primarily of lid (1) of stopping, shoe plate group (2), brake lever (3) and cam (4) composition, cam (4) is fixedly connected with brake lever (3) and can covers (1) rotation with in surface with brake lever (3) stopping, shoe plate group (2) upper end is fixed on by fixing pin (5) and is stopped on lid (1), shoe plate group (2) periphery is provided with friction plate (6), described shoe plate group (2) top and bottom are respectively equipped with return spring (7), it is characterized in that: described cam (4) and its position the radial corresponding diameter line covering (1) of stopping be an angle, this angle is 5-55 °, described cam (4) length is 17-25mm, width is 13-20mm, fixed tabs (8) length is 16-20mm, width is 10-14mm.
2. drum according to claim 1 is stopped, and it is characterized in that: described cam (4) is an angle with the diameter line covering (1) of stopping corresponding to its position, and this angle is 5-35 °.
3. drum according to claim 1 is stopped, and it is characterized in that: described cam (4) is an angle with the diameter line covering (1) of stopping corresponding to its position, and this angle is 36-55 °.
4. drum according to claim 1 is stopped, and it is characterized in that: described shoe plate group (2) lower end is respectively equipped with fixed tabs (8), and fixed tabs (8) is fitted respectively with the left and right both sides of the cam (4) under static state respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743332.3A CN105257733A (en) | 2015-02-10 | 2015-11-05 | Drum brake |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015100679731 | 2015-02-10 | ||
| CN201510067973.1A CN104632941A (en) | 2015-02-10 | 2015-02-10 | Drum brake |
| CN201510743332.3A CN105257733A (en) | 2015-02-10 | 2015-11-05 | Drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105257733A true CN105257733A (en) | 2016-01-20 |
Family
ID=53212035
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067973.1A Pending CN104632941A (en) | 2015-02-10 | 2015-02-10 | Drum brake |
| CN201510743332.3A Pending CN105257733A (en) | 2015-02-10 | 2015-11-05 | Drum brake |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067973.1A Pending CN104632941A (en) | 2015-02-10 | 2015-02-10 | Drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104632941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106005205A (en) * | 2016-06-07 | 2016-10-12 | 乔爱民 | Electric bicycle brake with bidirectional braking function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678204B (en) * | 2017-03-02 | 2018-10-23 | 盐城金华尔内燃机制造有限公司 | A kind of double necks of machinery are double from floating type motor vehicle brake |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329167A (en) * | 1999-05-19 | 2000-11-28 | Yamaha Motor Co Ltd | Drum brake for vehicle |
| CN201588893U (en) * | 2010-01-06 | 2010-09-22 | 重庆振华制动器有限公司 | Non-asbestos steel fiber drum brake assembly of a motor vehicle |
| CN202065381U (en) * | 2011-04-27 | 2011-12-07 | 无锡爱玛车业有限公司 | Rear drum brake of electric vehicle |
| CN102434609A (en) * | 2011-12-14 | 2012-05-02 | 张万川 | Folding mandril spreading device for internal-expanding wheel drum brake |
-
2015
- 2015-02-10 CN CN201510067973.1A patent/CN104632941A/en active Pending
- 2015-11-05 CN CN201510743332.3A patent/CN105257733A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329167A (en) * | 1999-05-19 | 2000-11-28 | Yamaha Motor Co Ltd | Drum brake for vehicle |
| CN201588893U (en) * | 2010-01-06 | 2010-09-22 | 重庆振华制动器有限公司 | Non-asbestos steel fiber drum brake assembly of a motor vehicle |
| CN202065381U (en) * | 2011-04-27 | 2011-12-07 | 无锡爱玛车业有限公司 | Rear drum brake of electric vehicle |
| CN102434609A (en) * | 2011-12-14 | 2012-05-02 | 张万川 | Folding mandril spreading device for internal-expanding wheel drum brake |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106005205A (en) * | 2016-06-07 | 2016-10-12 | 乔爱民 | Electric bicycle brake with bidirectional braking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104632941A (en) | 2015-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |