CN102588471A - Safe drum brake - Google Patents
Safe drum brake Download PDFInfo
- Publication number
- CN102588471A CN102588471A CN2012100638102A CN201210063810A CN102588471A CN 102588471 A CN102588471 A CN 102588471A CN 2012100638102 A CN2012100638102 A CN 2012100638102A CN 201210063810 A CN201210063810 A CN 201210063810A CN 102588471 A CN102588471 A CN 102588471A
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- Prior art keywords
- brake
- roller
- brake shoes
- stopped
- drum
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Abstract
The invention discloses a safe drum brake which comprises a casing, a pair of brake shoes and a brake arm assembly, wherein one end of each of the brake shoes is rotatably connected on the casing, a brake wheel connected with the brake arm assembly is arranged between the gap of the other ends of the pair of the brake shoes, a pin roller is butted between the brake wheel and each of the brake shoes, and the pin roller is in tooth meshing with the brake shoes. As the roller is in tooth meshing with the brake shoes, the pin roller can be effectively prevented from slipping during braking, the braking reliability of the drum brake is improved, and simultaneously, the dislocation of the roller can be prevented, the stability of movement of the pin roller is improved, and the braking stability of the drum brake is further 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 brake hub, 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 brake hub, 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 all the time on the several points or face of brake cam; 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 safety drum and stops, 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 safety drum is stopped; Comprise shell, brake shoes and brake arm assembly, an end of said brake shoes is transferred on said shell, is provided with the brake wheel that is connected with said brake arm assembly between another end gap of said brake shoes; Butt has roller between said brake wheel and the said brake shoes, is the profile of tooth engagement between said roller and the said brake shoes.
Further, the end face of the said roller of said brake shoes butt is provided with rack member, and said roller is provided with first flank of tooth with said rack member engagement.
Further, the two ends of said rack member are provided with spacing preiection.
Further, said rack member and said brake shoes one.
Further, said brake wheel is provided with the rotation rolling edge face that the rotation that promotes the roller rotation drives 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.
Further, be the profile of tooth engagement between said rotation rolling edge face and the said roller.
Further, said rotation rolling edge face is designed to gear hobbing face, and said roller is provided with second flank of tooth with said gear hobbing face engagement.
Further, said roller is a Cylindrical Gear.
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 service 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 parts; Feasible drum still has insensitivity preferably after stopping and using for a long time, has prolonged the service 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, adopt the profile of tooth engagement between roller and the brake shoes, can prevent effectively that roller from skidding in brake process, improve the brake reliability that drum is stopped, also can prevent the roller dislocation simultaneously, improve the stationarity of roller motion, continue and improve the brake stability that drum is stopped.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
The structural representation that Fig. 1 stops for existing drum;
The structural representation that Fig. 2 stops for drum of the present invention;
Fig. 3 is the C-C sectional view of Fig. 2;
Fig. 4 is the B place enlarged view of Fig. 3;
Fig. 5 is the A place enlarged view of Fig. 2.
Embodiment
With reference to Fig. 2-4, a kind of safety drum is stopped, and comprises shell 1, a pair of brake shoes 2 and brake arm assembly 3; One end of brake shoes 2 is transferred on shell, is provided with the brake wheel 4 that is connected with brake arm assembly 3 between another end gap of brake shoes 2, and butt has roller 5 between brake wheel 4 and the brake shoes 2; The position structure that also comprises roller 5; Position structure comprises positioning plate 6, and positioning plate 6 is provided with restraining groove 61, and roller 5 is provided with the convexity that embeds this restraining groove 61; When brake wheel 4 promotes roller 5; Roller 5 moves in the track that restraining groove 61 sets all the time, and its principle can not done detailed description at this with reference to the patent No. " 2011203340168 " of application before the claimant, the patent of invention that name is called " a kind of novel drum is stopped ".
The present invention adopts the profile of tooth engagement with roller 5 and brake shoes 2 on existing drum is stopped the basis, can prevent effectively that roller 5 from skidding in brake process; Improve the brake reliability that drum is stopped; Also can prevent simultaneously roller 5 dislocations, improve the stationarity of roller 5 motions, continue and improve the brake stability that drum is stopped.Explain characteristics of the present invention below in conjunction with concrete embodiment:
With reference to Fig. 5; The end face of brake shoes 2 butt rollers 5 is provided with rack member 21, and roller 5 is provided with first flank of tooth with rack member 21 engagements, rack member 21 and brake shoes 2 one; Also can be external parts; The two ends of rack member 21 also are provided with spacing preiection 22, utilize spacing preiection 22 can better limit the range of movement of roller 5, prevent its dislocation.
As for brake principle of the present invention equally can the application reference people before the patent No. " 2011203340168 ", the patent of invention that name is called " a kind of novel drum is stopped " of application, do not do detailed description at this.
Except that above-mentioned 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 (8)
1. a safety drum is stopped; Comprise shell, brake shoes and brake arm assembly; One end of said brake shoes is transferred on said housing; Be provided with the brake wheel that is connected with said brake arm assembly between another end gap of said brake shoes, butt has roller between said brake wheel and the said brake shoes, it is characterized in that: be the profile of tooth engagement between said roller and the said brake shoes.
2. a kind of safety drum as claimed in claim 1 is stopped, and it is characterized in that: the end face of the said roller of said brake shoes butt is provided with rack member, and said roller is provided with first flank of tooth with said rack member engagement.
3. a kind of safety drum as claimed in claim 2 is stopped, and it is characterized in that: the two ends of said rack member are provided with spacing preiection.
4. a kind of safety drum as claimed in claim 2 is stopped, and it is characterized in that: said rack member and said brake shoes one.
5. a kind of safety drum as claimed in claim 2 is stopped; It is characterized in that: said brake wheel is provided with the rotation rolling edge face that the rotation that promotes the roller rotation drives edge face and the rolling of confession roller; 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.
6. a kind of safety drum as claimed in claim 5 is stopped, and it is characterized in that: be the profile of tooth engagement between said rotation rolling edge face and the said roller.
7. a kind of safety drum as claimed in claim 6 is stopped, and it is characterized in that: said rotation rolling edge face is designed to gear hobbing face, and said roller is provided with second flank of tooth with said gear hobbing face engagement.
8. stop like claim 1 or 7 described a kind of safety drums, it is characterized in that: said roller is a Cylindrical Gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100638102A CN102588471A (en) | 2012-03-12 | 2012-03-12 | Safe drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100638102A CN102588471A (en) | 2012-03-12 | 2012-03-12 | Safe drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588471A true CN102588471A (en) | 2012-07-18 |
Family
ID=46477559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100638102A Pending CN102588471A (en) | 2012-03-12 | 2012-03-12 | Safe drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588471A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108825680A (en) * | 2018-08-09 | 2018-11-16 | 郭千华 | A kind of drum brake |
| CN110500368A (en) * | 2019-07-22 | 2019-11-26 | 高邮市顺达动力机电有限公司 | A kind of New drum type braking mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1471136A (en) * | 1973-04-16 | 1977-04-21 | Centrax Ltd | Brakes |
| CN102305252A (en) * | 2011-09-09 | 2012-01-04 | 许志明 | Improved drum brake structure |
| CN102322488A (en) * | 2011-09-07 | 2012-01-18 | 许志明 | A kind of novel drum is stopped |
| CN202441769U (en) * | 2012-03-12 | 2012-09-19 | 许志明 | Safe drum brake |
-
2012
- 2012-03-12 CN CN2012100638102A patent/CN102588471A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1471136A (en) * | 1973-04-16 | 1977-04-21 | Centrax Ltd | Brakes |
| CN102322488A (en) * | 2011-09-07 | 2012-01-18 | 许志明 | A kind of novel drum is stopped |
| CN102305252A (en) * | 2011-09-09 | 2012-01-04 | 许志明 | Improved drum brake structure |
| CN202441769U (en) * | 2012-03-12 | 2012-09-19 | 许志明 | Safe drum brake |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104613102A (en) * | 2015-02-13 | 2015-05-13 | 长兴华亿机电有限公司 | Drum brake |
| CN108825680A (en) * | 2018-08-09 | 2018-11-16 | 郭千华 | A kind of drum brake |
| CN110500368A (en) * | 2019-07-22 | 2019-11-26 | 高邮市顺达动力机电有限公司 | A kind of New drum type braking mechanism |
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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 | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120718 |