CN204164233U - A kind of drum brake and self-regulating mechanism thereof - Google Patents
A kind of drum brake and self-regulating mechanism thereof Download PDFInfo
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- CN204164233U CN204164233U CN201420617493.9U CN201420617493U CN204164233U CN 204164233 U CN204164233 U CN 204164233U CN 201420617493 U CN201420617493 U CN 201420617493U CN 204164233 U CN204164233 U CN 204164233U
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- Prior art keywords
- plectrum
- self
- regulating mechanism
- adjustable lever
- spring sheet
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- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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Abstract
The utility model discloses a kind of drum brake and self-regulating mechanism thereof, this self-regulating mechanism comprises the adjustable lever that end is provided with gear ring, and the plectrum assembly of arbitrary teeth groove clamping with described gear ring; Wherein, plectrum assembly comprises support, spring sheet and plectrum; The holding part of described support is held between the end briquetting of described adjustable lever and described gear ring, and its free segment is located between described spring sheet and described adjustable lever; One end of described spring sheet is fixed in described adjustable lever, and its other end is provided with described plectrum, and described plectrum is connected in described teeth groove; The mounting point of described spring sheet and described adjustable lever, the mounting point of more described holding part and described adjustable lever is away from described gear ring.Like this, above-mentioned self-regulating mechanism has simple structure, and its assembly process is simple, thus reduces its cost of production.
Description
Technical field
The utility model relates to Vehicle Engineering technical field, particularly relates to a kind of self-regulating mechanism for drum brake.The utility model also relates to a kind of drum brake comprising above-mentioned self-regulating mechanism.
Background technique
Break is the core component of brake system of car, and its performance directly affects the quality of brake system of car.Drum brake utilizes brake transmission mechanism to make brake shoe be pressed on inside brake drum by brake strip, thus generation braking force, make wheel decelerates as required or stop in the shortest distance, to guarantee traffic safety, and ensureing that its automatic sliding is reliably avoided in automobile parking.
Drum type brake friction sheet is after brake wear after a while, and friction plate and brake drum gap become greatly, when gap reach pre-conditioned after, just need to utilize self-regulating mechanism to carry out brake clearance adjustment, to ensure braking effect.As shown in Figure 1, the existing self-regulating mechanism for drum brake comprises adjusting part 11, the rotatable gear ring 12 be installed in adjusting part 11, and be connected to the plectrum 13 of the predetermined teeth groove of gear ring 12, plectrum 13 offers pin-and-hole near one end of brake shoe 14, and have bearing pin 15 by pin-and-hole riveting, bearing pin 15 is stuck in the mounting hole on brake shoe 14, and plectrum 13 and brake shoe 14 are also provided with plectrum spring 16, and utilize plectrum spring 16 to be fixed on brake shoe 14 by plectrum 13.In gap adjustment process, continue to step in braking process when brake clearance reaches predefined value, adjusting part regulates its length along with the expansion of brake shoe, simultaneously plectrum along with ring gear against rotation snaps in next teeth groove, restriction adjusting part return, after end of braking, under pull-up spring action, two brake shoe retractions, due to the position-limiting action of plectrum, shoe plate amount of recovery reduces, and friction plate and brake drum gap also diminish, and this completes a brake clearance adjustment.
But, in above-mentioned self-regulating mechanism, its plectrum needs riveting bearing pin, and bearing pin also needs to be connected in the mounting hole on shoe plate, also need separately to establish plectrum spring to cause the complex structure of self-regulating mechanism, assembly technology complicated for fixing plectrum, cost is in addition higher, this self-regulating mechanism is arranged near hub side, in brake clearance adjustment process, plectrum along with profile of tooth outwards move time, exist with hub interfere risk.
Therefore, the self-regulating mechanism that a kind of structure is simple, assembling is easy, cost of production is lower being provided, needing the problem of solution with regard to becoming those skilled in the art badly.
Model utility content
The purpose of this utility model is to provide a kind of self-regulating mechanism for drum brake, makes it have simple structure, and simplifies its assembly process, reduces its cost of production.Another object of the present utility model is to provide a kind of drum brake comprising above-mentioned self-regulating mechanism.
To achieve these goals, the utility model provides a kind of self-regulating mechanism for drum brake, comprises the adjustable lever that end is provided with gear ring, and the plectrum assembly of arbitrary teeth groove clamping with described gear ring; Described plectrum assembly comprises support, spring sheet and plectrum; The holding part of described support is held between the end briquetting of described adjustable lever and described gear ring, and its free segment is located between described spring sheet and described adjustable lever; One end of described spring sheet is fixed in described adjustable lever, and its other end is provided with described plectrum, and described plectrum is connected in described teeth groove; The mounting point of described spring sheet and described adjustable lever, the mounting point of more described holding part and described adjustable lever is away from described gear ring.
Preferably, described plectrum is provided with shifting block towards the side of described gear ring, and described plectrum is connected in described teeth groove by described shifting block.
Preferably, described holding part and the V-shaped structure of described free segment.
Preferably, described holding part and described free segment are integral type structure.
Preferably, described spring sheet and described plectrum are integral type structure.
Preferably, described spring sheet is riveted on described adjustable lever.
The utility model also provides a kind of drum brake, and the self-regulating mechanism comprising brake backing plate and arrange near described brake backing plate, described self-regulating mechanism is self-regulating mechanism as above.
The self-regulating mechanism that the utility model provides is for drum brake, and this self-regulating mechanism comprises the adjustable lever that end is provided with gear ring, and the plectrum assembly of arbitrary teeth groove clamping with described gear ring; Wherein, plectrum assembly comprises support, spring sheet and plectrum; The holding part of described support is held between the end briquetting of described adjustable lever and described gear ring, and its free segment is located between described spring sheet and described adjustable lever; One end of described spring sheet is fixed in described adjustable lever, and its other end is provided with described plectrum, and described plectrum is connected in described teeth groove; The mounting point of described spring sheet and described adjustable lever, the mounting point of more described holding part and described adjustable lever is away from described gear ring.
When the brake clearance of drum brake becomes greatly to predetermined extent, continue to step in braking process, adjustable lever is along with the expansion adjustment its length of shoe plate, the holding part of the support power that is squeezed reduces and flare thereupon, free segment then between spring sheet and adjustable lever moves, drive spring sheet and plectrum also one the samely to move, above move past in journey, plectrum drives gear ring upwards to rotate a tooth angle degree along screw thread; After end of braking, at pull-up spring action lower dolly bar return, the holding part affixed with the adjustable lever power that is squeezed increases and introversion thereupon, free segment between spring sheet and adjustable lever moves down, and spring sheet and plectrum also together move down, and plectrum snaps in next teeth groove downwards along gear ring, due to gear ring along screw thread rotation the angle of one tooth, shoe plate amount of recovery reduces, and friction plate and brake drum gap also diminish, and this completes a brake clearance adjustment.
Like this, above-mentioned self-regulating mechanism has simple structure, and its assembly process is simple, thus reduces its cost of production.
In a preferred embodiment, in self-regulating mechanism provided by the utility model, its plectrum is provided with shifting block towards the side of described gear ring, and described plectrum is connected in described teeth groove by described shifting block, to improve clamping convenience and the reliability of plectrum and teeth groove.
In another preferred embodiment, in self-regulating mechanism provided by the utility model, its holding part and the V-shaped structure of free segment, to make the structure of mechanism compacter, improve space availability ratio.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the utility model, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of self-regulating mechanism in prior art;
Fig. 2 is the structural representation of a kind of embodiment of self-regulating mechanism provided by the utility model;
Fig. 3 is the partial enlarged drawing of shifting block assembly in Fig. 2.
Description of reference numerals:
11-adjusting part 12-gear ring 13-plectrum 14-brake shoe 15-bearing pin
16-plectrum spring
21-gear ring 22-adjustable lever 221-end briquetting 31-support 311-holding part 312-free segment
32-spring sheet 33-plectrum 4-brake backing plate 5-shoe plate 6-pull-up spring
33-plectrum
Embodiment
Core of the present utility model is to provide a kind of self-regulating mechanism for drum brake, makes it have simple structure, and simplifies its assembly process, reduces its cost of production.Another core of the present utility model is to provide a kind of drum brake comprising above-mentioned self-regulating mechanism.
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with accompanying drawing, the utility model is further detailed.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of a kind of embodiment of self-regulating mechanism provided by the utility model; Fig. 3 is the partial enlarged drawing of shifting block assembly in Fig. 2.
In a kind of embodiment, the self-regulating mechanism that the utility model provides is for drum brake, and this self-regulating mechanism comprises the adjustable lever 22 that end is provided with gear ring 21, and the plectrum assembly of arbitrary teeth groove clamping with described gear ring 21; Wherein, plectrum assembly comprises support 31, spring sheet 32 and plectrum 33; Between the end briquetting that the holding part 311 of described support 31 is held on described adjustable lever 22 and described gear ring 21, its free segment 312 is located between described spring sheet 32 and described adjustable lever 22; One end of described spring sheet 32 is fixed in described adjustable lever 22, and its other end is provided with described plectrum 33, and described plectrum 33 is connected in described teeth groove; The mounting point of described spring sheet 32 and described adjustable lever 22, the mounting point of more described holding part 311 and described adjustable lever 22 is away from described gear ring 21.Like this, above-mentioned self-regulating mechanism has simple structure, and its assembly process is simple, thus reduces its cost of production.
When the brake clearance of drum brake becomes greatly to predetermined extent, continue to step in braking process, adjustable lever 22 is along with the expansion adjustment its length of shoe plate 5, the holding part 311 of support 31 power that is squeezed reduces and flare thereupon, free segment 312 then between spring sheet 32 and adjustable lever 22 moves, drive spring sheet 32 and plectrum 33 also one the samely to move, above move past in journey, plectrum 33 drives gear ring 21 upwards to rotate a tooth angle degree along screw thread; After end of braking, lower dolly bar 22 return is acted at pull-up spring 6, the holding part 311 affixed with adjustable lever 22 power that is squeezed increases and introversion thereupon, free segment 312 between spring sheet 32 and adjustable lever 22 moves down, and spring sheet 32 and plectrum 33 also together move down, and plectrum 33 snaps in next teeth groove downwards along gear ring 21, due to gear ring 21 along screw thread rotation the angle of one tooth, shoe plate 5 amount of recovery reduces, and friction plate and brake drum gap also diminish, and this completes a brake clearance adjustment.
Particularly, above-mentioned plectrum 33 is provided with shifting block towards the side of described gear ring 21, and described plectrum 33 is connected in described teeth groove by described shifting block, to improve clamping convenience and the reliability of plectrum 33 and teeth groove.Apparently, plectrum 33 can also realize the clamping with teeth groove by the structure of related domain routine.
Above-mentioned holding part 311 and free segment 312 can V-shaped structures, to make the structure of mechanism compacter, improve space availability ratio.From theory, holding part 311 and free segment 312 are also not limited to v-shaped structure, as long as both can realize the connection of suitable angle, such as, both axis also can vertically be arranged, i.e. holding part 311 and the L-shaped structure of free segment 312.
In order to ensure the two-part reliable linkage of support 31, described holding part 311 is integral type structure with described free segment 312.Apparently, holding part 311 and free segment 312 are also not limited to integral structure, as long as can ensure that both link, such as both also can fix for modes such as welding, riveted joint or bolt connections.
In order to the structure simplified the internal structure of an organization further, reduce assembling difficulty, described spring sheet 32 is integral type structure with described plectrum 33.Apparently, spring sheet 32 and plectrum 33 are also not limited to integral structure, also can be split-type structural, and are fixed by modes such as welding, riveted joint or bolt connections.
Particularly, spring sheet 32 can rivet, welds or adopt other to be fixedly connected with mode and be installed on described adjustable lever 22.
Except above-mentioned self-regulating mechanism, the utility model also provides a kind of drum brake comprising above-mentioned self-regulating mechanism, above-mentioned self-regulating mechanism is arranged on the position of drum brake near brake backing plate 4, to avoid interfering with wheel hub in working procedure, other Each part of this drum brake please refer to prior art, do not repeat them here.
Mode above only by illustrating describes some one exemplary embodiment of the present utility model, undoubtedly, for those of ordinary skill in the art, when not departing from spirit and scope of the present utility model, can revise described embodiment by various different mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the utility model claims.
Claims (7)
1., for a self-regulating mechanism for drum brake, comprise the adjustable lever (22) that end is provided with gear ring (21), and the plectrum assembly of arbitrary teeth groove clamping with described gear ring (21); It is characterized in that, described plectrum assembly comprises support (31), spring sheet (32) and plectrum (33); The holding part (311) of described support (31) is held between the end briquetting (221) of described adjustable lever (22) and described gear ring (21), and its free segment (312) is located between described spring sheet (32) and described adjustable lever (22); One end of described spring sheet (32) is fixed in described adjustable lever (22), and its other end is provided with described plectrum (33), and described plectrum (33) is connected in described teeth groove; The mounting point of described spring sheet (32) and described adjustable lever (22), the mounting point of more described holding part (311) and described adjustable lever (22) is away from described gear ring (21).
2. self-regulating mechanism according to claim 1, is characterized in that, described plectrum (33) is provided with shifting block towards the side of described gear ring (21), and described plectrum (33) is connected in described teeth groove by described shifting block.
3. self-regulating mechanism according to claim 1, is characterized in that, described holding part (311) and described free segment (312) V-shaped structure.
4. self-regulating mechanism according to claim 3, is characterized in that, described holding part (311) and described free segment (312) are integral type structure.
5. self-regulating mechanism according to claim 1, is characterized in that, described spring sheet (32) and described plectrum (33) are integral type structure.
6. self-regulating mechanism according to claim 1, is characterized in that, described spring sheet (32) is riveted on described adjustable lever (22).
7. a drum brake, the self-regulating mechanism comprising brake backing plate (4) and arrange near described brake backing plate (4), it is characterized in that, described self-regulating mechanism is the self-regulating mechanism as described in any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617493.9U CN204164233U (en) | 2014-10-22 | 2014-10-22 | A kind of drum brake and self-regulating mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617493.9U CN204164233U (en) | 2014-10-22 | 2014-10-22 | A kind of drum brake and self-regulating mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164233U true CN204164233U (en) | 2015-02-18 |
Family
ID=52537923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420617493.9U Expired - Fee Related CN204164233U (en) | 2014-10-22 | 2014-10-22 | A kind of drum brake and self-regulating mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164233U (en) |
-
2014
- 2014-10-22 CN CN201420617493.9U patent/CN204164233U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20191022 |