CN203500329U - Drum brake capable of preventing shoe sheet from jumping in radial direction - Google Patents
Drum brake capable of preventing shoe sheet from jumping in radial direction Download PDFInfo
- Publication number
- CN203500329U CN203500329U CN201320529906.3U CN201320529906U CN203500329U CN 203500329 U CN203500329 U CN 203500329U CN 201320529906 U CN201320529906 U CN 201320529906U CN 203500329 U CN203500329 U CN 203500329U
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- China
- Prior art keywords
- brake
- braking
- brake shoe
- shoe
- bottom board
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Abstract
The utility model discloses a drum brake capable of preventing a shoe sheet from jumping in the radial direction, and relates to the field of a brake. The drum brake solves the technical problem that in the prior art, the brake shoe can easily generate friction with a brake bottom plate through jumping. The drum brake provided by the utility model comprises a brake bottom plate, wherein a left brake shoe, a right brake shoe, a brake pulling arm and the brake drum are arranged on the brake bottom plate, the middle section of the right brake shoe and the left brake shoe are rotationally connected with the brake bottom plate through a pin, a reset spring is arranged between the left brake shoe and the right brake shoe, the upper end of the left brake shoe is connected with a pulling rope through the brake pulling arm, the bottom end of the left brake shoe is connected with the bottom end of the right brake shoe through a regulating ratchet wheel, the drum brake also comprises a fixing frame for limiting the braking pulling arm from upwards and downwards jumping in the radial direction of the brake bottom plate, the fixing frame is fixedly connected with the brake bottom plate, in addition, a concave cavity is arranged on the fixing frame, and the brake pulling arm is connected with the concave cavity in a penetrating way. The brake has the advantages that the jumping of the brake shoes is limited, the brake is prevented from generating friction and abnormal sound, the use effect is better, and the service life is longer.
Description
[technical field]
The utility model relates to a kind of automotive brake, especially a kind of drum brake.
[background technique]
Parking brake is again in parking braking, its effect be exactly in when parking to resistance of automobile, make automobile not slip car.Parking braking, pins transmission shaft or trailing wheel, and the parking braking power more required than service brake is little a lot, is only that not slip car just passable guaranteeing to stop at slope road.Brake shoe is connected with braking bottom board by pin, therefore brake shoe contacts with braking bottom board, and there is assemblage gap between pin and brake shoe, when drum brake jolts road or deceleration strip in process, brake shoe, at the upper and lower play of radial direction, can cause the bottom surface of brake shoe and braking bottom board friction to produce abnormal sound, and permanent friction can affect the assembling effect of braking bottom board and brake shoe, affect the stopping power of break, even can reduce the working life of drum brake.
[summary of the invention]
The technical problem that the utility model solves is to provide a kind of drum brake, can prevent brake shoe in the footpath of braking bottom board play up and down, avoid producing between brake shoe and braking bottom board friction.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of drum brake that prevents shoe plate radial-play, comprise braking bottom board, described braking bottom board is provided with left brake shoe, right braking hoof, braking torque arm and brake drum, the stage casing of described right braking hoof and left brake shoe is rotationally connected by pin and braking bottom board, between left brake shoe and right braking hoof, be provided with Returnning spring, the upper end of left brake shoe is connected with stay cord by braking torque arm, the bottom of left brake shoe is connected by adjusting ratchet with the bottom of right braking hoof, described drum brake also comprise the described braking torque arm of restriction along braking bottom board footpath the fixing frame of play up and down, described fixing frame is fixedly connected with braking bottom board, and fixing frame is provided with cavity, cavity described in described braking torque arm cross-under.
Further, described fixing frame comprises punch holder, die holder and the bending section that connects punch holder and die holder, described punch holder, die holder and bending section are around forming described cavity, and the free end of punch holder is provided with the upwards flanging of bending, and described flanging is fixedly connected with braking bottom board.
Further, described flanging and braking bottom board are connected by screw.
Further, described braking bottom board is provided with lug boss, boss is in the top of braking torque arm, the two ends of described lug boss offset with the upper end end face of left brake shoe and right braking hoof respectively, and described lug boss is with the opposing side of right braking hoof the arc surface matching with opposing side, the lug boss of left brake shoe.
Further, described arc surface is upper and lower asymmetric arc surface, and arc surface comprises the great circle segmental arc of upper end and the roundlet segmental arc of lower end, and the arc diameter of described great circle segmental arc is greater than the arc diameter of roundlet segmental arc.
The beneficial effects of the utility model:
In the utility model, by fixing frame, limit braking torque arm at the upper and lower play of radial direction of braking bottom board, therefore also limited the play of left brake shoe and right braking hoof, passing by while jolting road or deceleration strip, between left brake shoe and right braking hoof and braking bottom board, can not produce friction and abnormal sound, the using effect of drum brake is better, and the life-span is longer.
These features of the present utility model and advantage will be below embodiment, accompanying drawing in detailed exposure.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the plan view of the utility model drum brake;
Fig. 2 is the sectional view of A – A in Fig. 1;
Fig. 3 is the sectional view of B – B in Fig. 1;
Fig. 4 is the partial schematic diagram of drum brake;
Fig. 5 is the structural representation of fixing frame.
[embodiment]
The utility model provides a kind of drum brake that prevents shoe plate radial-play, comprise braking bottom board, braking bottom board is provided with left brake shoe, right braking hoof, braking torque arm and brake drum, the stage casing of right braking hoof and left brake shoe is rotationally connected by pin and braking bottom board, between left brake shoe and right braking hoof, be provided with Returnning spring, the upper end of left brake shoe is connected with stay cord by braking torque arm, the bottom of left brake shoe is connected by adjusting ratchet with the bottom of right braking hoof, drum brake also comprise restriction braking torque arm along braking bottom board footpath the fixing frame of play up and down, fixing frame is fixedly connected with braking bottom board, and fixing frame is provided with cavity, braking torque arm cross-under cavity.By fixing frame, connect braking bottom board and braking torque arm, braking torque arm is connected in left brake shoe, fixing frame restriction braking torque arm moves up and down in radial direction, thereby also limited left brake shoe at the upper and lower play of radial direction, therefore the right braking hoof being fixedly connected with left brake shoe is also limited, and fixing frame allows stay cord to pull braking torque arm to swing in cavity, promotes left brake shoe and drives right braking hoof to expand outwardly, with brake drum friction catch.
Accompanying drawing below in conjunction with the utility model embodiment is explained and illustrated the utility model embodiment's technological scheme, but following embodiment is only preferred embodiment of the present utility model, not all.Embodiment based in mode of execution, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to protection domain of the present utility model.
With reference to figure 1, Fig. 2 and Fig. 3, shown drum brake, comprise braking bottom board 1, the outer brake drum 5 that is socketed with of braking bottom board 1, braking bottom board 1 is provided with brake shoe and braking torque arm 4, in braking torque arm 4, be connected with stay cord, brake shoe comprises right braking hoof 22 and the left brake shoe 21 being oppositely arranged, the stage casing of right braking hoof 22 and left brake shoe 21 is by pin 61, press spring base 62 and limit spring 63 switchings are on braking bottom board 1 surface, and be provided with Returnning spring between left brake shoe 21 and right braking hoof 22, Returnning spring comprises being located between the upper end of left brake shoe 21 and the upper end of right braking hoof 22 return spring 31 is set, be located at the extension spring 32 arranging between the lower end of left brake shoe 21 and the lower end of right braking hoof 22, the upper end of left brake shoe 21 connects braking torque arm 4, braking torque arm 4 connects the mounting hole of braking bottom board 1, left brake shoe 21 is connected by adjusting ratchet 9 with the bottom of right braking hoof 22.
When pulling parking brake, braking torque arm 4 is opened to the left and is promoted left brake shoe 21, left brake shoe 21 and brake drum 5 contact friction output frictional force F1, left brake shoe 21, by regulating ratchet 9 to 22 1 thrusts of right braking hoof, makes right braking hoof 22 and brake drum 5 contact frictions produce frictional force F2, under the effect of frictional force F1 and F2, make automobile parking not slip slope, unclamp parking brake, brake shoe is by return spring 31 and extension spring 32 returns, take-off the brake drum 5.
With reference to figure 3 and Fig. 4, improved, drum brake of the present utility model also comprise restriction braking torque arm 4 in braking bottom board footpath the fixing frame 8 of play up and down, fixing frame 8 is fixedly connected with braking bottom board 1, diagram fixing frame 8 is fixedly connected with the lug boss 11 on braking bottom board, and fixing frame 8 is provided with cavity 85, braking torque arm 4 cross-under are in cavity 85.When brake shoe descends play diametrically, braking torque arm 4 is also thereupon up and down mobile, and will brake torque arm 4 with fixing frame 8, be connected with braking bottom board 1, limited braking torque arm 4 at the upper and lower play of radial direction, also just prevented that brake shoe from descending play diametrically.
With reference to figure 4 and Fig. 5, fixing frame 8 specifically comprises punch holder 81, die holder 82 and the bending section 83 that connects punch holder 81 and die holder 82, punch holder 81, die holder 82 and bending section 83 are around forming cavity 85, the free end of punch holder 81 is provided with the upwards flanging 84 of bending, braking torque arm 4 is passed from cavity 85, punch holder 81 and die holder 82 are positioned at the both sides up and down of braking torque arm 4, by flanging 84, are fixedly connected with braking bottom board 1.
Preferably, flanging 84 is connected by screw 7 with braking bottom board 1.On flanging 84, be provided with through hole 841, braking bottom board 1 is provided with tapped hole, and screw 7 is through through hole 841 connecting thread holes; Screw connects detachable, is convenient to replacing and the adjustment of fixing frame.
With reference to figure 4, braking bottom board 1 is provided with lug boss 11, lug boss 11 is positioned at the top of braking torque arm 4, the flanging 84 of the surperficial Connection Bracket of lug boss 11, the left end of lug boss 11 and left brake shoe 21 upper end end faces offset, the upper end end face of the right-hand member of lug boss 11 and right braking hoof 22 offsets, and lug boss 11 is with the opposing side of left brake shoe 21 and the opposing side of lug boss 11 and right braking hoof 22 arc surface 12 matching.Drum brake is when non-braking state, and end face and the lug boss 11 of left brake shoe 21 and right braking hoof 22 offset, and arc surface is connected can provide resistance when brake shoe play, further prevent brake shoe in the footpath of braking bottom board 1 play up and down.
And arc surface 12 is preferably upper and lower asymmetric arc surface, arc surface comprises the great circle segmental arc of upper end and the roundlet segmental arc of lower end, and the arc diameter of great circle segmental arc is greater than the arc diameter of roundlet segmental arc.In parking braking, when brake shoe supports outward, braking torque arm has the power radially making progress to brake shoe, brake shoe is up moved, therefore lug boss and brake shoe installation place have certain gap, adopt upper and lower asymmetric arc surface that lug boss is better contacted with brake shoe, and compare laterally zygomorphic arc surface and can reduce the assemblage gap between lug boss and brake shoe, can better be stressed while making brake shoe play, can more early make lug boss contact with brake shoe, thereby alleviate the play of brake shoe.
By above-described embodiment, the purpose of this utility model is by fully effective having reached.The personage who is familiar with this technology should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in embodiment above.Any modification that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (5)
1. a drum brake that prevents shoe plate radial-play, comprise braking bottom board, described braking bottom board is provided with left brake shoe, right braking hoof, braking torque arm and brake drum, the stage casing of described right braking hoof and left brake shoe is rotationally connected by pin and braking bottom board, between left brake shoe and right braking hoof, be provided with Returnning spring, the upper end of left brake shoe is connected with stay cord by braking torque arm, the bottom of left brake shoe is connected by adjusting ratchet with the bottom of right braking hoof, it is characterized in that: described drum brake also comprise the described braking torque arm of restriction along braking bottom board footpath the fixing frame of play up and down, described fixing frame is fixedly connected with braking bottom board, and fixing frame is provided with cavity, cavity described in described braking torque arm cross-under.
2. a kind of drum brake that prevents shoe plate radial-play according to claim 1, it is characterized in that: described fixing frame comprises punch holder, die holder and the bending section that connects punch holder and die holder, described punch holder, die holder and bending section are around forming described cavity, the free end of punch holder is provided with the upwards flanging of bending, and described flanging is fixedly connected with braking bottom board.
3. a kind of drum brake that prevents shoe plate radial-play according to claim 2, is characterized in that: described flanging and braking bottom board are connected by screw.
4. according to a kind of drum brake that prevents shoe plate radial-play described in claim 1 or 2 or 3, it is characterized in that: described braking bottom board is provided with lug boss, boss is in the top of braking torque arm, the two ends of described lug boss offset with the upper end end face of left brake shoe and right braking hoof respectively, and described lug boss is with the opposing side of right braking hoof the arc surface matching with opposing side, the lug boss of left brake shoe.
5. a kind of drum brake that prevents shoe plate radial-play according to claim 4, it is characterized in that: described arc surface is upper and lower asymmetric arc surface, arc surface comprises the great circle segmental arc of upper end and the roundlet segmental arc of lower end, and the arc diameter of described great circle segmental arc is greater than the arc diameter of roundlet segmental arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529906.3U CN203500329U (en) | 2013-08-28 | 2013-08-28 | Drum brake capable of preventing shoe sheet from jumping in radial direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529906.3U CN203500329U (en) | 2013-08-28 | 2013-08-28 | Drum brake capable of preventing shoe sheet from jumping in radial direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500329U true CN203500329U (en) | 2014-03-26 |
Family
ID=50331309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320529906.3U Expired - Lifetime CN203500329U (en) | 2013-08-28 | 2013-08-28 | Drum brake capable of preventing shoe sheet from jumping in radial direction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500329U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438765A (en) * | 2016-10-24 | 2017-02-22 | 广州中博制动系统有限公司 | In-disc drum brake capable of preventing brake shoes from falling |
| CN108223628A (en) * | 2018-03-15 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | A kind of parking torque arm structure |
-
2013
- 2013-08-28 CN CN201320529906.3U patent/CN203500329U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438765A (en) * | 2016-10-24 | 2017-02-22 | 广州中博制动系统有限公司 | In-disc drum brake capable of preventing brake shoes from falling |
| CN106438765B (en) * | 2016-10-24 | 2018-08-07 | 广州中博制动系统有限公司 | It can prevent drum brake in the disk of brake-shoe tenesmus |
| CN108223628A (en) * | 2018-03-15 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | A kind of parking torque arm structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 311835 Industrial Zone of Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Wanan Zhiyu Automobile Control System Co.,Ltd. Address before: 311835 Wan'an Science and Technology Park, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG ZHUJI MANPOWER MACHINERY CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |
|
| CX01 | Expiry of patent term |