CN205371408U - Drum brake's braking clearance adjustment structure - Google Patents
Drum brake's braking clearance adjustment structure Download PDFInfo
- Publication number
- CN205371408U CN205371408U CN201521059406.3U CN201521059406U CN205371408U CN 205371408 U CN205371408 U CN 205371408U CN 201521059406 U CN201521059406 U CN 201521059406U CN 205371408 U CN205371408 U CN 205371408U
- Authority
- CN
- China
- Prior art keywords
- brake
- sleeve
- web
- friction plate
- clearance
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a drum brake's braking clearance adjustment structure, including the brake shoe, web and sleeve, the bar hole has been seted up on the web, the both sides of web are equipped with first friction disc and second friction disc respectively, the sleeve includes cylindrical section and screw thread section, telescopic cylindrical section department is equipped with the disc, the disc offsets with first friction disc, telescopic screw thread section is connected with the mount pad, mount pad department is equipped with the pressure spring, still externally make the spacer pin on the movable support including fixing, be equipped with the bulb on the spacer pin, into sleeve is stretched to the bulb. The utility model discloses an effect is: during braking clearance between brake shoe and braked wheel increase, the web will be overcome the effort of friction disc and drive the brake shoe and remove certain distance, distance that this distance just in time increases for the braking clearance, therefore this structure can realize the automatic compensation in clearance when the braking clearance increases, the messenger brakies the clearance and maintains the optimum value, has guaranteed the form safety of vehicle.
Description
Technical field
This utility model relates to drum brake, and the brake clearance being specially a kind of drum brake adjusts structure.
Background technology
Drum brake is the braking executive device in brakes, is the critical component in brake system of car, and the element of drum brake is fewer than disk brake, simple in construction, and manufacturing cost is relatively low.
When using drum brake braking, piston in hydraulic drive wheel cylinder is displaced outwardly, wheelcylinder piston promotes brake-shoe near braked wheel again, brake-shoe and braked wheel produce frictional resistance and stop the rotation of wheel, wherein the gap between brake-shoe and braked wheel is called brake clearance, in order to ensure the normal traveling of automobile, best brake clearance should be kept between brake-shoe and braked wheel, tradition drum brake is in use for some time, the brake clearance made between brake-shoe and braked wheel is increased by brake-shoe due to abrasion, increasing of brake clearance will have influence on the normal traveling of vehicle.
Utility model content
This utility model is intended to provide a kind of brake clearance that can make to remain the drum brake of best brake clearance between brake-shoe and braked wheel to adjust structure.
The brake clearance of the drum brake in this programme adjusts structure, including brake-shoe, the web being connected with brake-shoe and sleeve, web offers bar hole, web be respectively provided on two sides with the first friction plate and the second friction plate, sleeve includes cylindrical section and thread segment, the cylindrical section place of sleeve is provided with disk, sleeve sequentially passes through the first friction plate, bar hole and the second friction plate, disk and the first friction plate offset, the thread segment of sleeve is connected to mounting seat, mounting seat place is provided with stage clip, stage clip one end and mounting seat offset, the stage clip other end and the second friction plate offset, also include the spacer pin being fixed on outer brake support, spacer pin is provided with bulb, bulb puts in sleeve, the side of bulb and sleeve offset, there is gap in the opposite side of bulb and the inwall of sleeve.
nullThe principle of this programme is: when being braked，Promotion power on the lower brake-shoe of effect makes brake-shoe drive web to move to the direction of braked wheel together，When web strips moving sleeve moves to sleeve lining and bulb offsets，Now brake-shoe and braked wheel offset，Under the brake-shoe frictional force effect with braked wheel，Braked wheel speed is limited，When brake-shoe is after using a period of time abrasion occur，Brake clearance between brake-shoe and braked wheel increases，When again braking，When sleeve lining offsets with bulb，Gap is there is also between brake-shoe and braked wheel，It is connected owing to guide finger and outer brake support are fixing，Under the effect of guide finger，The position of sleeve is defined，Now under the effect promoting power，Web will overcome and the active force of the first friction plate and the second friction plate，Continue to move to braked wheel direction with brake-shoe，Until brake-shoe and braked wheel offset，Braked wheel is braked under the effect of frictional force，After braking completes，Remove promotion power，Now web will be unable to again overcome the active force of the first friction plate and the second friction plate to return to origin-location，Therefore web will be positioned at new position with brake-shoe，And the distance that web and brake-shoe move is the distance that brake clearance increases，It is achieved thereby that the adjustment of brake clearance.
The effect of this programme is: when the brake clearance between brake-shoe and braked wheel increases, web will overcome the active force of the first friction plate and the second friction plate and drives brake-shoe to move certain distance, the distance that this distance just increases for brake clearance, therefore this structure can realize the automatic compensation in gap when brake clearance increases, brake clearance is made to maintain optimum, it is ensured that the form safety of vehicle.
Further, spacer pin and outer brake support weld together, and the mode of welding is simple to operate and dependable performance.
Further, brake-shoe being additionally provided with the drag ring improving brake efficiency, drag ring can improve frictional force during braking between brake-shoe and braked wheel, thus improving brake efficiency.
Further, the diameter of cylindrical section is more than the diameter of thread segment, and mounting seat can be carried out spacing more than thread segment diameter by cylindrical section diameter.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Detailed description of the invention
Below by detailed description of the invention, this utility model is described in further detail:
Accompanying drawing labelling in Figure of description includes: brake-shoe 1, drag ring 2, web 3, bar hole the 4, first friction plate the 5, second friction plate 6, disk 7, sleeve 8, mounting seat 9, stage clip 10, guide finger 11, bulb 12.
Embodiment is substantially as shown in Figure 1: the brake clearance of drum brake adjusts structure, including brake-shoe 1, the right side of brake-shoe 1 is provided with drag ring 2, frictional force when drag ring 2 can increase brake-shoe 1 with braked wheel effect, so that braked wheel can realize fast braking, it is provided with web 3 in the left side of brake-shoe 1.
Web 3 offers bar hole 4, the first friction plate 5 it is provided with in the downside of web 3, second friction plate 6 equivalently-sized with the first friction plate 5 it is provided with in the upside of web 3, the width of the first friction plate 5 and the second friction plate 6 left and right directions, more than the width of bar hole 4 on web 3, all offers, on the first friction plate 5 and the second friction plate 6, the through hole communicated with bar hole 4.
It is additionally provided with sleeve 8 at bar hole 4 place of web 3, sleeve 8 includes disk 7, cylindrical section and thread segment, the cylindrical section of sleeve 8 and thread segment sequentially pass through the through hole of the through hole of the first friction plate 5, bar hole 4 and the second friction plate 6 from top to bottom, disk 7 and the first friction plate 5 on sleeve 8 offset, the width of the disk 7 left and right directions width more than the first friction plate 5 through hole and the width less than the first friction plate 5.
It is also associated with mounting seat 9 at the thread segment place of sleeve 8, mounting seat 9 is threadeded with sleeve 8, it is provided with flexible member in the downside of mounting seat 9, the present embodiment elastic element is stage clip 10, the upside of stage clip 10 and mounting seat 9 offset, the downside of stage clip 10 and the second friction plate 6 offset, and under the effect of stage clip 10 and disk 7, the first friction plate 5 and the second friction plate 6 are from two side compression webs 3.
Outside brake holder is also associated with guide finger 11, the upside of guide finger 11 and outer brake support weld together, the downside of guide finger 11 is stretched in sleeve 8, it is additionally provided with bulb 12 in the downside of guide finger 11, the right side of bulb 12 just with sleeve 8 on the right side of inwall offset, there is certain gap between inwall on the left of the left side of bulb 12 and sleeve 8, this gap is sleeve 8 mobile ultimate range during braking.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the premise without departing from this utility model structure, it is also possible to make some deformation and improvement; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. records the content that may be used for explaining claim.
Claims (4)
- null1. the brake clearance of a drum brake adjusts structure，It is characterized in that，Including brake-shoe、The web being connected with described brake-shoe and sleeve,Described web offers bar hole,Described web be respectively provided on two sides with the first friction plate and the second friction plate，Described sleeve includes cylindrical section and thread segment，The cylindrical section place of described sleeve is provided with disk，Described sleeve sequentially passes through described first friction plate、Described bar hole and described second friction plate，Described disk and described first friction plate offset，The thread segment of described sleeve is connected to mounting seat，Described mounting seat place is provided with stage clip，Described stage clip one end and described mounting seat offset，The described stage clip other end and described second friction plate offset，Also include the spacer pin being fixed on outer brake support，Described spacer pin is provided with bulb，Described bulb puts in described sleeve，The side of described bulb and described sleeve offset，There is gap in the inwall of the opposite side of described bulb and described sleeve.
- 2. the brake clearance of drum brake according to claim 1 adjusts structure, it is characterised in that: described spacer pin and outer brake support weld together.
- 3. the brake clearance of drum brake according to claim 2 adjusts structure, it is characterised in that: described brake-shoe is additionally provided with the drag ring improving brake efficiency.
- 4. the brake clearance of drum brake according to claim 3 adjusts structure, it is characterised in that: the diameter of described cylindrical section is more than the diameter of described thread segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059406.3U CN205371408U (en) | 2015-12-18 | 2015-12-18 | Drum brake's braking clearance adjustment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059406.3U CN205371408U (en) | 2015-12-18 | 2015-12-18 | Drum brake's braking clearance adjustment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371408U true CN205371408U (en) | 2016-07-06 |
Family
ID=56259341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521059406.3U Expired - Fee Related CN205371408U (en) | 2015-12-18 | 2015-12-18 | Drum brake's braking clearance adjustment structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485222A (en) * | 2015-12-18 | 2016-04-13 | 重庆泽田汽车部件有限责任公司 | Brake clearance adjusting structure of drum brake |
| CN110925333A (en) * | 2019-10-30 | 2020-03-27 | 湖南中联重科车桥有限公司 | Drum brake and vehicle braking system |
-
2015
- 2015-12-18 CN CN201521059406.3U patent/CN205371408U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485222A (en) * | 2015-12-18 | 2016-04-13 | 重庆泽田汽车部件有限责任公司 | Brake clearance adjusting structure of drum brake |
| CN110925333A (en) * | 2019-10-30 | 2020-03-27 | 湖南中联重科车桥有限公司 | Drum brake and vehicle braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20161218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |