CN104006092A - Rear brake structure - Google Patents
Rear brake structure Download PDFInfo
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- CN104006092A CN104006092A CN201410259173.5A CN201410259173A CN104006092A CN 104006092 A CN104006092 A CN 104006092A CN 201410259173 A CN201410259173 A CN 201410259173A CN 104006092 A CN104006092 A CN 104006092A
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- brake
- hoof
- friction plate
- brake shoe
- fixed
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Abstract
The invention relates to a rear brake structure which comprises a brake drum, a brake shell body, a brake shoe, braking device and return springs. The brake drum is fixed to a hub and rotates along with wheels. The brake shoe is fixed to a non-rotating part of the hub through the brake shell body, and the brake shoe is arranged in the brake drum. The outer surface shape of the brake shoe is matched with the inner surface shape of the brake drum. The brake shoe comprises a master brake shoe, a slave brake shoe, a first friction plate fixed to the outer surface of the master brake shoe and a second friction plate fixed to the outer surface of the slave brake shoe. The master brake shoe and the slave brake shoe are movably fixed to the brake shell body through a rotating shaft. The master brake shoe and the slave brake shoe are respectively provided with at least one return spring, and one end of the master brake shoe and the corresponding end of the slave brake shoe are provided with the braking device. The thickness of the first friction plate is larger than that of the second friction plate.
Description
Technical field
The invention belongs to automobile brake field, refer to especially a kind of rear brake structure that is applied to shoe drum braking.
Background technique
Symmetric type has neck hoof and is widely used at vehicle from the shoe drum brake of hoof, and for a break, the parameters such as the structure of friction shoe plate, shape, thickness have larger impact to NVH and the wear resistance of braking; Existing neck drum brake from shoe type adopts neck hoof and is of uniform thickness from hoof friction material, the radius arc structures such as surface employing.
As depicted in figs. 1 and 2, shoe drum brake includes brake drum 101, brake shoe, friction plate (104,105), the structure such as return spring 106, spanner 107, drag-line, wherein brake drum is fixed with wheel hub, and with rotation of wheel, brake shoe is fixed on the nonrotational portion of wheel hub by brake casing, brake shoe is arranged at the inside of brake drum; Brake shoe includes neck hoof 102 and from hoof 103, leading hoof and being symplex structure from hoof is fixed on the housing of break by rotatingshaft activity, leading hoof and be provided with return spring from hoof, spanner one end is connected with the one end from hoof with neck hoof, the other end of spanner is connected with drag-line, and spanner drives neck hoof and the motion of the internal surface direction from hoof to brake drum; Friction plate is fixed on neck hoof and from the outer surface of hoof, in braking process, friction plate is with the internal surface contact of brake drum.
In the brake structural of existing technology, lead hoof and adopt symmetrical structure design from hoof, lead hoof and adopt identical friction material thickness from hoof; This structure for related die simplicity of design, be easy to manufacture processing, simplify handling of goods and materials and quality control, simultaneously for braking force without impact, so adopt comparatively extensive.
Owing to leading stressed different with from hoof of hoof in actual using process, neck hoof is stressed is greater than stressed from hoof, so the wearing and tearing of neck hoof and requirement of strength are all higher than the wearing and tearing from hoof and requirement of strength; If neck hoof and all designing according to the highest requirement from hoof, there will be from hoof that intensity is superfluous and friction material utilization ratio is on the low side, especially, when adopting the higher friction material of value, this point is just particularly outstanding.
As shown in Figure 3, neck often adopts the design of continuous circular arc face to coordinate with brake drum from the Friction Disk Surface structure of shoe drum brake; This kind of design makes Friction Disk Surface and brake drum laminating closely, is conducive to wearing and tearing.Because existing brake drum ageing treatment is poor, in use easily there is " losing circle " phenomenon, because brake shoe is in use due to stressed generation deformation, also easily occur " losing circle " phenomenon, we are referred to as " losing circle effect " that this phenomenon is drum brake simultaneously; This phenomenon causes braking under some specific operating mode can produce the braking NVH problems such as shake, noise.
Summary of the invention
The object of the invention is by existing brake structural is improved, under the prerequisite of assurance brake performance and comfort property, reduce production costs.
The present invention is achieved by the following technical solutions:
A rear brake structure, includes brake drum, brake casing, brake shoe, braking device, return spring; Described brake drum is fixed with wheel hub, and with rotation of wheel; Described brake shoe is fixed on the nonrotational portion of described wheel hub by described brake casing, described brake shoe is arranged at the inside of described brake drum; The external surface shape of described brake shoe matches with the inner surface configuration of described brake drum;
Described brake shoe includes neck hoof, from hoof, be fixed on the first friction plate described neck hoof outer surface and be fixed on described the second friction plate from hoof outer surface; Described neck hoof and being fixed on described brake casing by rotatingshaft is movable from hoof;
Described neck hoof and be describedly provided with at least one return spring from hoof, and at described neck hoof and described one end from hoof, described braking device is set;
The thickness of described the first friction plate is greater than the thickness of described the second friction plate.
The thickness at described the first friction plate and described the second friction plate two end part is greater than its thickness of other parts separately.
The outer surface of described the first friction plate and described the second friction plate is respectively arranged with groove.
The outer surface of described the first friction plate and described the second friction plate is axially provided with groove described at least one along break.
Described brake shoe is non-symmetry structure with respect to described wheel hub center.
Described neck hoof is provided with pawl structures with described from hoof one end relative to described braking device, for the gap between adjustable brake hoof outer surface and brake drum internal surface.
Described braking device is Pneumatic actuator, hydraulic pressure installation or manual operating device.
Described manual operating device includes spanner and drag-line.
The invention has the beneficial effects as follows:
The present invention is by the design of asymmetric, and not affecting that braking moment realizes, under reliable and stable prerequisite, effectively Hoist braking device neck is harmonious from the working life of hoof, and effectively reduction is from the waste of hoof friction material; Frictional contact surface, by adopting the design of discontinuous arc surface, has effectively improved " losing circle effect " of drum brake simultaneously, has promoted greatly the NVH performance of braking system.A kind of low cost, high reliability, high-comfort design.
Accompanying drawing explanation
Fig. 1 is for existing technology symmetric type neck is from hoof structure drum-like brake structure schematic diagram;
Fig. 2 is existing technology symmetric type brake shoe assembly schematic diagram;
Fig. 3 is existing technology brake shoe outer surface structure schematic diagram;
Fig. 4 is one embodiment of the invention drum-like brake structure schematic diagram;
Fig. 5 is one embodiment of the invention brake shoe assembly schematic diagram;
Fig. 6 is one embodiment of the invention neck hoof outer surface structure schematic diagram;
Fig. 7 is that one embodiment of the invention is from hoof outer surface structure schematic diagram.
Embodiment
Describe by the following examples technological scheme of the present invention in detail, following embodiment is only exemplary, only can be used for explaining and technological scheme of the present invention being described, and can not to be interpreted as is the restriction to technical solution of the present invention.
In technological scheme of the present invention, the brake drum of drum brake is existing structure, mainly comprises two classes, drum-type structure in drum-type structure or dish.Drum-type structure is herein that brake drum is single brake drum, is fixed on the rotating part of wheel hub, with wheel, synchronously rotates.In dish, drum structure is to form tray type structure in the outer of brake drum, is beneficial to brake calipers and brake drum acting in conjunction simultaneously.
Break includes brake shell, for fixing brake inside assembly, plays protection and seal action simultaneously, and sealing herein refers to and prevent that dust and muddy water etc. from entering into brake inside, prevents corrosion and increases the resistance of vehicle.
Brake casing is fixed on the nonrotational part of wheel hub, and brake casing is not with vehicle wheel rotation.Brake shoe includes two, be respectively neck hoof and from hoof, lead hoof stress surface when braking, from hoof, for assisting braking, lead hoof and be relatively arranged in brake casing from hoof, and movable fixing by rotatingshaft, that is, lead hoof and rotate by rotatingshaft from hoof, to realize, expanding outwardly, the outer surface of brake shoe and the internal surface of brake drum are contacted, realize braking.
Leading hoof and be provided with return spring from hoof, conventionally on brake shoe, be provided with at least two return springs, be used for making to lead hoof and from hoof, end of braking, being returned to original position, one end of return spring is fixed on neck hoof, the other end is fixed on from hoof, if while adopting two return springs, be conventionally arranged at neck hoof and from the two ends close end of hoof, be conducive to like this equilibrium of forces.At the neck hoof of break be provided with braking device from one end of hoof, for accepting operator's order, make brake shoe action, complete braking or brake off, braking device is arranged at neck hoof and between one end of hoof, the existing braking device adopting is Pneumatic actuator, hydraulic pressure installation or manual operating device.Wherein manual operating device is spanner and stayed structure, is commonly using of most of load-carrying vehicle, and existing still have part minibus to adopt manual braking device.
Leading hoof and being provided with pawl structures from hoof one end relative to braking device, for the gap between adjustable brake hoof outer surface and brake drum internal surface.Existing pawl structures includes manual pawl structures and two kinds of automatic pawl structures, according to actual demand, determines.
In the application's technological scheme, brake shoe includes neck hoof, from hoof, be fixed on the first friction plate neck hoof outer surface and be fixed on the second friction plate from hoof outer surface; The thickness of the first friction plate is greater than the thickness of the second friction plate.
Embodiment 1
As shown in Figure 4 and Figure 5, a kind of rear brake structure, includes brake drum 1, brake casing (not shown), brake shoe, braking device 6, return spring (71,72); Brake drum 1 is fixed with wheel hub, and with rotation of wheel; Brake shoe is fixed on the nonrotational portion of wheel hub by brake casing, brake shoe is arranged at the inside of brake drum; The external surface shape of brake shoe matches with the inner surface configuration of brake drum;
Brake shoe is non-symmetry structure, brake shoe includes neck hoof 2, from hoof 3, be fixed on the first friction plate 4 neck hoof outer surface and be fixed on the second friction plate 5 from hoof outer surface; Lead hoof 2 and be fixed on brake casing by rotatingshaft (81,82) is movable from hoof 3;
Lead hoof 2 and be provided with at least one return spring from hoof 3, and leading hoof and from one end of hoof, braking device 6 be set;
The thickness of the first friction plate 4 is greater than the thickness of the second friction plate 5.
Lead hoof 2 and be provided with pawl structures 9 from hoof 3 one end relative to braking device 6, for the gap between adjustable brake hoof outer surface and brake drum internal surface.
Embodiment 2
As shown in Figures 4 to 7, a kind of rear brake structure, includes brake drum 1, brake casing, brake shoe, braking device 6, return spring (71,72); Brake drum is fixed with wheel hub, and with rotation of wheel; Brake shoe is fixed on the nonrotational portion of wheel hub by brake casing, brake shoe is arranged at the inside of brake drum; The external surface shape of brake shoe matches with the inner surface configuration of brake drum;
Brake shoe is non-symmetry structure, brake shoe includes neck hoof 2, from hoof 3, be fixed on the first friction plate 4 neck hoof outer surface and be fixed on the second friction plate 5 from hoof outer surface; Lead hoof 2 and be fixed on brake casing by rotatingshaft (81,82) is movable from hoof 3;
Lead hoof and be provided with at least one return spring from hoof, and leading hoof and from one end of hoof, braking device be set;
The thickness of the first friction plate 4 is greater than the thickness of the second friction plate 5; The thickness at the first friction plate and the second friction plate two end part is greater than the thickness of other parts, refers to that the thickness at the first friction plate two end part (401,402) is greater than the thickness of the first friction plate other parts herein; The thickness at the second friction plate two end part (501,502) is greater than the thickness of the second friction plate other parts.
Lead hoof 2 and be provided with pawl structures 9 from hoof 3 one end relative to braking device 6, for the gap between adjustable brake hoof outer surface and brake drum internal surface.
Embodiment 3
A rear brake structure, includes brake drum, brake casing, brake shoe, braking device, return spring; Brake drum is fixed with wheel hub, and with rotation of wheel; Brake shoe is fixed on the nonrotational portion of wheel hub by brake casing, brake shoe is arranged at the inside of brake drum; The external surface shape of brake shoe matches with the inner surface configuration of brake drum;
Brake shoe is non-symmetry structure, brake shoe includes neck hoof, from hoof, be fixed on the first friction plate neck hoof outer surface and be fixed on the second friction plate from hoof outer surface; Lead hoof and be fixed on brake casing by rotatingshaft is movable from hoof;
Lead hoof and be provided with at least one return spring from hoof, and leading hoof and from one end of hoof, braking device be set;
The thickness of the first friction plate is greater than the thickness of the second friction plate; The outer surface of the first friction plate and the second friction plate is axially provided with at least one groove along break.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiments, scope of the present invention is by claims and be equal to and limit.
Claims (8)
1. a rear brake structure, includes brake drum, brake casing, brake shoe, braking device, return spring; Described brake drum is fixed with wheel hub, and with rotation of wheel; Described brake shoe is fixed on the nonrotational portion of described wheel hub by described brake casing, described brake shoe is arranged at the inside of described brake drum; The external surface shape of described brake shoe matches with the inner surface configuration of described brake drum; It is characterized in that:
Described brake shoe includes neck hoof, from hoof, be fixed on the first friction plate described neck hoof outer surface and be fixed on described the second friction plate from hoof outer surface; Described neck hoof and being fixed on described brake casing by rotatingshaft is movable from hoof;
Described neck hoof and be describedly provided with at least one return spring from hoof, and at described neck hoof and described one end from hoof, described braking device is set;
The thickness of described the first friction plate is greater than the thickness of described the second friction plate.
2. rear brake structure according to claim 1, is characterized in that: the thickness at described the first friction plate and described the second friction plate two end part is greater than its thickness of other parts separately.
3. rear brake structure according to claim 1 and 2, is characterized in that: the outer surface of described the first friction plate and described the second friction plate is respectively arranged with groove.
4. rear brake structure according to claim 3, is characterized in that: the outer surface of described the first friction plate and described the second friction plate is axially provided with groove described at least one along break.
5. rear brake structure according to claim 1, is characterized in that: described brake shoe is non-symmetry structure with respect to described wheel hub center.
6. rear brake structure according to claim 1, is characterized in that: described neck hoof is provided with pawl structures with described from hoof one end relative to described braking device, for the gap between adjustable brake hoof outer surface and brake drum internal surface.
7. according to the rear brake structure described in any one in claim 1 or 6, it is characterized in that: described braking device is Pneumatic actuator, hydraulic pressure installation or manual operating device.
8. rear brake structure according to claim 7, is characterized in that: described manual operating device includes spanner and drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259173.5A CN104006092B (en) | 2014-06-11 | 2014-06-11 | Rear brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259173.5A CN104006092B (en) | 2014-06-11 | 2014-06-11 | Rear brake structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006092A true CN104006092A (en) | 2014-08-27 |
| CN104006092B CN104006092B (en) | 2017-02-15 |
Family
ID=51366914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410259173.5A Expired - Fee Related CN104006092B (en) | 2014-06-11 | 2014-06-11 | Rear brake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104006092B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686021A (en) * | 2018-07-05 | 2020-01-14 | 株式会社万都 | Drum brake |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1007804A (en) * | 1963-10-11 | 1965-10-22 | Rockwell Standard Co | Improvements in or relating to internal shoe-drum brakes |
| US4353441A (en) * | 1980-09-19 | 1982-10-12 | The Bendix Corporation | Dual mode drum brake |
| JPH0215735B2 (en) * | 1980-12-25 | 1990-04-13 | Akebono Brake Ind | |
| JP2000170802A (en) * | 1998-12-07 | 2000-06-23 | Hosei Brake Ind Ltd | Dual mode drum brake |
| DE102005056221A1 (en) * | 2004-12-21 | 2006-07-13 | Continental Teves Ag & Co. Ohg | Electromechanical parking brake for motor vehicle has brake shoes with four brake linings, some thicker than others |
| CN101818768A (en) * | 2009-11-17 | 2010-09-01 | 梅向东 | Automobile floating shoe-axis mode balancing force amplifying brake |
| CN201627845U (en) * | 2010-02-09 | 2010-11-10 | 芜湖稳乐制动系统有限公司 | Novel brake structure |
| CN203892408U (en) * | 2014-06-11 | 2014-10-22 | 安徽江淮汽车股份有限公司 | Rear brake structure |
-
2014
- 2014-06-11 CN CN201410259173.5A patent/CN104006092B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1007804A (en) * | 1963-10-11 | 1965-10-22 | Rockwell Standard Co | Improvements in or relating to internal shoe-drum brakes |
| US4353441A (en) * | 1980-09-19 | 1982-10-12 | The Bendix Corporation | Dual mode drum brake |
| JPH0215735B2 (en) * | 1980-12-25 | 1990-04-13 | Akebono Brake Ind | |
| JP2000170802A (en) * | 1998-12-07 | 2000-06-23 | Hosei Brake Ind Ltd | Dual mode drum brake |
| DE102005056221A1 (en) * | 2004-12-21 | 2006-07-13 | Continental Teves Ag & Co. Ohg | Electromechanical parking brake for motor vehicle has brake shoes with four brake linings, some thicker than others |
| CN101818768A (en) * | 2009-11-17 | 2010-09-01 | 梅向东 | Automobile floating shoe-axis mode balancing force amplifying brake |
| CN201627845U (en) * | 2010-02-09 | 2010-11-10 | 芜湖稳乐制动系统有限公司 | Novel brake structure |
| CN203892408U (en) * | 2014-06-11 | 2014-10-22 | 安徽江淮汽车股份有限公司 | Rear brake structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686021A (en) * | 2018-07-05 | 2020-01-14 | 株式会社万都 | Drum brake |
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| Publication number | Publication date |
|---|---|
| CN104006092B (en) | 2017-02-15 |
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| 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 Corp.,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 |
Granted publication date: 20170215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |