CN104613102A - Drum brake - Google Patents
Drum brake Download PDFInfo
- Publication number
- CN104613102A CN104613102A CN201510080874.7A CN201510080874A CN104613102A CN 104613102 A CN104613102 A CN 104613102A CN 201510080874 A CN201510080874 A CN 201510080874A CN 104613102 A CN104613102 A CN 104613102A
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- Prior art keywords
- brake
- positioning plate
- limited part
- roller
- drum
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Abstract
The invention relates to a drum brake and belongs to the field of car braking in order to prevent braking failure of the drum brake. The drum brake comprises a shell, a pair of brake shoes and a brake component, the brake shoes are disposed on the shell with one ends hinged to the shell, the brake component comprises a brake shaft and a brake wheel disposed on the brake shaft, a pin roller is arranged between other ends of the brake shoes and the brake wheel, the brake wheel rotates and pushes the pin roller to drive the brake shoes to expand, the pin roller drives the brake wheel to revolve when the brake shoes are reset, the brake component further comprises a limitation portion, a retaining portion is arranged on the shell, and the retaining portion is abutted against the limitation portion to prevent the brake wheel from revolving after the brake shoes are reset.
Description
Technical field
The present invention relates to a kind of drum to stop, belong to car brakeing field.
Background technique
Drum brakes is a kind of conventional mode of braking of vehicle.Existing drum brakes comprises housing, be provided with two pieces of brake shoes and brake wheel in housing, two pieces of brake shoes are hinged, its formation axle center, hinged place, brake wheel can drive brake shoes to rotate around axle center by rotating forward, and brake wheel also can reverse and drive brake shoes to rotate around axle center.
For improving the braking effect that drum is stopped, application number is 201210063810.2, and denomination of invention is a kind of patent of safe drum brake, between brake wheel with brake shoes, abutted roller, for profile of tooth engages between roller with brake shoes.But after brake shoes resets, brake wheel continues revolution, and so roller will exit in groove, thus causes bulging braking to lose efficacy.
Summary of the invention
Problem to be solved by this invention is just to provide a kind of drum and stops, and loses efficacy to avoid drum braking.
For solving the problem, the invention provides following technological scheme:
A kind of drum is stopped, comprise shell, be installed on a pair brake shoes and the brake assemblies of shell, described brake shoes one end and housing hinge, described brake assemblies comprises brake axle and is arranged on the brake wheel on described brake axle, roller is provided with between the described brake shoes the other end and brake wheel, described brake wheel rotation forces roller is expanded with driving brake shoe plate, roller driving brake wheel revolution when described brake shoes resets, described brake assemblies also comprises limited part, described shell is provided with stop part, after described brake shoes resets, stop part and described limited part conflict to stop brake wheel to turn round.
Further, described brake assemblies also comprises positioning plate, and described positioning plate is provided with restraining groove, and described roller end is provided with fixing pin, and described fixing pin inserts in described restraining groove, and described limited part is fixed on positioning plate.
Further, described limited part is stretched out by described positioning plate edge and is formed.
Further, described positioning plate comprises positioning plate and lower positioning plate, described upper positioning plate is provided with upper limit position groove, described lower positioning plate is provided with lower limit groove, described roller two ends are respectively equipped with fixing pin, the fixing pin of described roller upper end inserts in upper limit position groove, and the fixing pin of described roller lower end inserts in lower limit groove, and described upper positioning plate and/or described lower positioning plate are provided with described limited part.
Further, described upper positioning plate is provided with the first limited part, and described lower positioning plate is provided with the second limited part, and described first limited part is corresponding up and down with described second limited part.
Further, described upper positioning plate is provided with the first limited part, and described lower positioning plate is provided with the second limited part, and described first limited part and described second limited part stagger.
Further, described brake assemblies also comprises positioning plate, and described positioning plate is provided with restraining groove, and described roller end is provided with fixing pin, and described fixing pin inserts in described restraining groove, and described limited part is fixed on brake axle upper-end surface.
Further, described stop part is upwards extended to form by described shell upper-end surface.
Beneficial effect of the present invention:
Drum of the present invention is stopped and is comprised shell and brake assemblies, and shell is provided with stop part, and brake assemblies comprises limited part, and after brake shoes resets, stop part and limited part conflict to stop brake wheel to turn round.
Existing drum is stopped after brake shoes resets, and roller inserts in the draw-in groove of brake wheel, now, if brake wheel continues to rotate under the effect of external force, so, brake wheel will promote roller by draw-in groove, and makes it exit from the gap location between brake wheel and brake shoes.
In the present invention, after brake shoes resets, stop part and limited part are conflicted, and drum can be avoided to stop and occur excessive pivotal situation.In other words, stop part and limited part are used for avoiding drum braking to lose efficacy.
Accompanying drawing explanation
Fig. 1 is the plan view that in the present invention, a kind of drum is stopped;
Fig. 2 is the explosive view that in the present invention, a kind of drum is stopped;
Fig. 3 is the stereogram of brake member in the present invention;
Fig. 4 is the explosive view of brake member in the present invention.
Embodiment
The technological scheme of accompanying drawing to the embodiment of the present invention below in conjunction with the embodiment of the present invention is explained and illustrated, but following embodiment is only the preferred embodiments of the present invention, and not all.Based on the embodiment in mode of execution, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection scope of the present invention.
Embodiment one
See figures.1.and.2, a kind of drum is stopped, and comprise shell 1, be installed on a pair brake shoes of shell 1 and brake assemblies, wherein, a pair described brake shoes comprises first brake shoe plate 3 and the second brake shoes 4.First brake shoe plate 3 one end and second brake shoes 4 one end hinged with shell 1 respectively, be connected with elastic element 8 between first brake shoe plate 3 the other end and second brake shoes 4 the other end.The brake wheel 21 that brake assemblies comprises brake axle 2 and is arranged on brake axle 2, the first roller 6 is provided with between first brake shoe plate 3 the other end and brake wheel 21, and first brake shoe plate 3 and brake wheel 21 engage with the first roller 6 respectively, be provided with the second roller 7 between second brake shoes 4 the other end and brake wheel 21, and the second brake shoes 4 and brake wheel 21 engage with the second roller 7 respectively.In the process that brake wheel 21 rotates forward, brake wheel 21 side promotes the first roller 6 and expands outwardly to drive first brake shoe plate 3 the other end, and brake wheel 21 opposite side promotes the second roller 7 and expands outwardly to drive second brake shoes 4 the other end.In the process of brake wheel 21 counterrotating, elastic element 6 drives first brake shoe plate 3 the other end and second brake shoes 4 the other end to shrink, and turns round to realize brake wheel 21.For avoiding first brake shoe plate 3 and the second brake shoes 4 after the reset, brake wheel 21 continues revolution, the brake assemblies of the present embodiment also comprises limited part, shell 1 is provided with stop part, when first brake shoe plate 3 and the second brake shoes 4 reset, stop part and limited part conflict to stop brake wheel 21 to continue to turn round.
With reference to Fig. 2 and Fig. 3, concrete, brake assemblies also comprises the upper positioning plate 22 offseted with brake wheel 21 upper-end surface and the lower positioning plate 23 offseted with brake wheel 21 lower end surface, and, limited part is arranged on lower positioning plate 23, namely descends the edge of positioning plate 23 to be provided with outward extending protruding 24; For offseting with protruding 24, shell 1 is provided with stop part, and namely the upper-end surface of shell 1 is provided with the limited post 11 upwards extended.
With reference to Fig. 4, for limiting the sliding trace of the first roller 6 and the second roller 7, in the present embodiment, upper positioning plate 22 is provided with the first restraining groove 222, lower positioning plate 23 is provided with three restraining groove 232 concordant with the first restraining groove 222, the two ends of the first roller 6 are respectively arranged with the first fixing pin 61, the first fixing pin 61 being positioned at roller 6 upper-end surface can insert the first restraining groove 222, the first fixing pin 61 being positioned at roller 6 lower end surface can insert the 3rd restraining groove 232, reciprocatingly slides with the arc realizing the first roller 6; In like manner, upper positioning plate 22 is also provided with the second restraining groove 223, lower positioning plate 23 is also provided with four restraining groove 233 concordant with the second restraining groove 223, the two ends of the second roller 7 are respectively arranged with the second fixing pin 71, the second fixing pin 71 being positioned at roller 7 upper-end surface can insert the second restraining groove 223, the second fixing pin 71 being positioned at roller 7 lower end surface can insert the 4th restraining groove 233, reciprocatingly slides with the arc realizing the second roller 7.
With reference to Fig. 2 and Fig. 4, in the present embodiment, the working principle of first brake shoe plate 3 and the expansion of the second brake shoes 4: brake wheel 21 is rotated counterclockwise in process with brake axle 2, exit in the draw-in groove 213 of the first roller 6 on the left of brake wheel 21, and engage with the first teeth 212 on the left of brake wheel 21, to realize driving first brake shoe plate 3 to expand outwardly; In like manner, exit in the draw-in groove 213 of the second roller 7 on the right side of brake wheel 21, and engage with the first teeth 212 on the right side of brake wheel 21, expand outwardly to realize driving second brake shoes 4.
With reference to Fig. 2 and Fig. 4, in the present embodiment, the working principle that first brake shoe plate 3 and the second brake shoes 4 reset: after brake wheel 21 turns clockwise with brake axle 2, first teeth 212 of the first roller 6 around left side rotate, insert in the draw-in groove 213 in left side, and first teeth 212 of the second roller 7 around right side rotate, insert in the draw-in groove 213 on right side, first brake shoe plate 3 can be realized and the second brake shoes 4 resets.
With reference to Fig. 2, after first brake shoe plate 3 and the second brake shoes 4 reset, if continue spin brake axle 2, so, driving wheel 21 will continue promotion first roller 6, first roller 6 will be separated with the second teeth 311 on the first groove 31 diapire, and along the side walls of the first groove 31 or rolling, to realize exiting the first groove 31; In like manner, driving wheel 21 will continue promotion second roller 7, second roller 7 and will be separated with the 3rd teeth 411 on the second groove 41 diapire, and along the side walls of the second groove 41 or rolling, to realize exiting the second groove 41.If the first roller 6 exits after the first groove 31 and the second roller 7 exit the second groove 41, drum is stopped and will be there will be braking failure.For avoiding drum braking to lose efficacy, after first brake shoe plate 3 and the second brake shoes 4 reset, protruding 24 offset with limited post 11, continue to rotate than prevention driving wheel 21.
With reference to Fig. 4, for fixing upper positioning plate 22, driving wheel 21 and lower positioning plate 23, in the present embodiment, upper positioning plate 22 is provided with the first through hole 221, brake wheel 21 is provided with the second through hole 211, lower positioning plate 23 is provided with third through-hole 231, and the rectangular preiection 20 of brake axle 2 upper end passes the first through hole 221, second through hole 211 and third through-hole 231, successively to realize fixing above-mentioned three parts.
With reference to Fig. 2, the upper-end surface of shell 1 is also provided with the fixing column 5 upwards extended, and after first brake shoe plate 3 and the second brake shoes 4 are enclosed within fixing column 5 successively, nut 52 is threaded with fixed base 5 to realize fixing first brake shoe plate 3 and the second brake shoes 4.
Embodiment two
Be with embodiment one difference, in the present embodiment, the mounting point of limited part changes.
Concrete, in the present embodiment, upper positioning plate is provided with the first limited part, first limited part is that upper positioning plate edge outward extending first is protruding, lower positioning plate is provided with the second limited part, second limited part is that lower positioning plate edge outward extending second is protruding, and first is protruding protruding corresponding up and down with second.After first brake shoe plate and the second brake shoes reset, the first projection and the second projection offset with limited post respectively.
The beneficial effect of the present embodiment: the first projection and the second projection can be used for the active force strengthening the rotation of limited post prevention brake wheel.
Embodiment three
Be with embodiment one difference, in the present embodiment, the mounting point of limited part and the structure of stop part change.
Concrete, in the present embodiment, upper positioning plate is provided with the first limited part, first limited part is that upper positioning plate edge outward extending first is protruding, lower positioning plate is provided with the second limited part, second limited part is that lower positioning plate edge outward extending second is protruding, and the first projection staggers with the second projection.Shell is provided with the first limited post and the second limited post, after first brake shoe plate and the second brake shoes reset, the first projection offsets with the first limited post, and the second projection offsets with the second limited post.
The beneficial effect of the present embodiment: the present embodiment is by dual conflict, thus anti-rotation reliability of stopping is roused in increase further.
Embodiment four
Be with embodiment one difference, in the present embodiment, the mounting point of limited part changes.
Concrete, in the present embodiment, brake axle upper-end surface is provided with limited part, and limited part is the projection that brake axle radial direction extends.After first brake shoe plate and the second brake shoes reset, protruding and limited post offsets.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and those of ordinary skill in the art should be understood that and the present invention includes but the content being not limited to accompanying drawing and describing in embodiment above.Any amendment not departing from function and structure principle of the present invention all will comprise within the scope of the appended claims.
Claims (8)
1. a drum is stopped, comprise shell, be installed on a pair brake shoes and the brake assemblies of shell, described brake shoes one end and housing hinge, described brake assemblies comprises brake axle and is arranged on the brake wheel on described brake axle, roller is provided with between the described brake shoes the other end and brake wheel, described brake wheel rotation forces roller is expanded with driving brake shoe plate, roller driving brake wheel revolution when described brake shoes resets, it is characterized in that: described brake assemblies also comprises limited part, described shell is provided with stop part, after described brake shoes resets, stop part and described limited part conflict to stop brake wheel to turn round.
2. drum as claimed in claim 1 is stopped, it is characterized in that: described brake assemblies also comprises positioning plate, described positioning plate is provided with restraining groove, and described roller end is provided with fixing pin, described fixing pin inserts in described restraining groove, and described limited part is fixed on positioning plate.
3. drum as claimed in claim 2 is stopped, and it is characterized in that: described limited part is stretched out by described positioning plate edge and formed.
4. drum as claimed in claim 2 is stopped, it is characterized in that: described positioning plate comprises positioning plate and lower positioning plate, described upper positioning plate is provided with upper limit position groove, described lower positioning plate is provided with lower limit groove, described roller two ends are respectively equipped with fixing pin, the fixing pin of described roller upper end inserts in upper limit position groove, and the fixing pin of described roller lower end inserts in lower limit groove, and described upper positioning plate and/or described lower positioning plate are provided with described limited part.
5. drum as claimed in claim 4 is stopped, and it is characterized in that: described upper positioning plate is provided with the first limited part, described lower positioning plate is provided with the second limited part, and described first limited part is corresponding up and down with described second limited part.
6. drum as claimed in claim 4 is stopped, and it is characterized in that: described upper positioning plate is provided with the first limited part, described lower positioning plate is provided with the second limited part, and described first limited part and described second limited part stagger.
7. drum as claimed in claim 1 is stopped, it is characterized in that: described brake assemblies also comprises positioning plate, described positioning plate is provided with restraining groove, and described roller end is provided with fixing pin, described fixing pin inserts in described restraining groove, and described limited part is fixed on brake axle upper-end surface.
8. the drum as described in one of claim 1 to 7 is stopped, and it is characterized in that: described stop part is upwards extended to form by described shell upper-end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080874.7A CN104613102A (en) | 2015-02-13 | 2015-02-13 | Drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080874.7A CN104613102A (en) | 2015-02-13 | 2015-02-13 | Drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104613102A true CN104613102A (en) | 2015-05-13 |
Family
ID=53147697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510080874.7A Pending CN104613102A (en) | 2015-02-13 | 2015-02-13 | Drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104613102A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653662A (en) * | 2015-02-11 | 2015-05-27 | 温州智创科技有限公司 | Drum brake |
| CN109826885A (en) * | 2017-11-23 | 2019-05-31 | 江苏恒力制动器制造有限公司 | A kind of single pin stopper mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3677374A (en) * | 1969-06-25 | 1972-07-18 | Girling Ltd | Cam actuated drum brake |
| GB1471136A (en) * | 1973-04-16 | 1977-04-21 | Centrax Ltd | Brakes |
| CN102182771A (en) * | 2011-03-22 | 2011-09-14 | 杨胜军 | Linkage outer expansion type drum brake |
| CN102305252A (en) * | 2011-09-09 | 2012-01-04 | 许志明 | Improved drum brake structure |
| CN102588471A (en) * | 2012-03-12 | 2012-07-18 | 许志明 | Safe drum brake |
| CN204437117U (en) * | 2015-02-13 | 2015-07-01 | 长兴华亿机电有限公司 | A kind of drum is stopped |
-
2015
- 2015-02-13 CN CN201510080874.7A patent/CN104613102A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3677374A (en) * | 1969-06-25 | 1972-07-18 | Girling Ltd | Cam actuated drum brake |
| GB1471136A (en) * | 1973-04-16 | 1977-04-21 | Centrax Ltd | Brakes |
| CN102182771A (en) * | 2011-03-22 | 2011-09-14 | 杨胜军 | Linkage outer expansion type drum brake |
| CN102305252A (en) * | 2011-09-09 | 2012-01-04 | 许志明 | Improved drum brake structure |
| CN102588471A (en) * | 2012-03-12 | 2012-07-18 | 许志明 | Safe drum brake |
| CN204437117U (en) * | 2015-02-13 | 2015-07-01 | 长兴华亿机电有限公司 | A kind of drum is stopped |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109826885A (en) * | 2017-11-23 | 2019-05-31 | 江苏恒力制动器制造有限公司 | A kind of single pin stopper mechanism |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20150513 |