CN212407387U - Four-piston fixed drum brake assembly - Google Patents
Four-piston fixed drum brake assembly Download PDFInfo
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- CN212407387U CN212407387U CN202021722778.0U CN202021722778U CN212407387U CN 212407387 U CN212407387 U CN 212407387U CN 202021722778 U CN202021722778 U CN 202021722778U CN 212407387 U CN212407387 U CN 212407387U
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- piston
- piston fixed
- brake assembly
- cylinder body
- drum brake
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Abstract
The utility model discloses a four-piston fixed drum brake assembly, include: the four pistons fix the cylinder body; the sealing base and the dust guard are arranged on the four-piston fixed cylinder body; a purge valve mounted on the sealing seat; the copper gasket is arranged on the four-piston fixed cylinder body; the piston is arranged on the four-piston fixed cylinder body; a friction plate mounted on the piston; a hub bearing mounted on the seal mount; a brake drum mounted on the hub bearing. The utility model discloses the braking cylinder body is four pistons fixed, and braking efficiency is high, and the piston return is stable, can effectively shorten the footboard stroke. The utility model discloses, volume space is little, arranges the convenience, and the braking cylinder body is four pistons fixed, and braking efficiency is high, and the piston return is stable, can effectively shorten the footboard stroke.
Description
Technical Field
The utility model relates to a drum brake field, concretely relates to fixed drum brake assembly of four pistons.
Background
With the development of the technology in the automobile industry and the aggravation of market competition, high-performance and low-cost products become the ultimate goal pursued by each automobile enterprise. As for the braking system, the brake with the best comprehensive performance belongs to a fixed disc brake, but the brake can only be applied to some luxury vehicle types due to the high price; the floating type disc brake is relatively low in price, but due to the floating characteristic, the problems of fatigue and softness of a first pedal, abnormal sound of bumpy roads, eccentric wear of friction plates, dragging and the like often occur, and meanwhile, due to the large radial and axial sizes of the floating type disc brake, certain difficulties are caused to the arrangement of wheels, steering and a suspension; the drum brake has the advantages of lowest price, small volume and space and easy arrangement, but because of the floatability of the shoe plate and the piston, abnormal noise of wheel idle running often occurs, because the friction plate area of the shoe plate is large, squeaking sound often occurs when the brake is stepped on, meanwhile, heat accumulation is serious during friction, local high hot points are easily caused, the braking efficiency is unstable, because various draw arms and return springs are numerous, the motion interference is inevitably caused, abnormal noise is generated, because the precision of the shoe plate is not guaranteed, in order to prevent self-braking jamming, the return of the shoe plate is generally large, and the stroke of the brake pedal is long.
SUMMERY OF THE UTILITY MODEL
The utility model provides a four-piston fixed drum brake assembly, braking cylinder body are four-piston fixed, and braking efficiency is high, and the piston return is stable, can effectively shorten the footboard stroke, has solved current three big type of stopper (fixed disc brake, floating drum brake) inherent with high costs, the space size is big, technical problem such as performance difference.
A four-piston fixed drum brake assembly comprising:
the four pistons fix the cylinder body;
the sealing base and the dust guard are arranged on the four-piston fixed cylinder body;
a purge valve mounted on the sealing seat;
the copper gasket is arranged on the four-piston fixed cylinder body;
the piston is arranged on the four-piston fixed cylinder body;
a friction plate mounted on the piston;
a hub bearing mounted on the seal mount;
a brake drum mounted on the hub bearing.
The four-piston fixed cylinder body is provided with four piston holes, a sealing groove provided with a sealing ring is machined in each piston hole, a rectangular groove is machined in the end part of each piston hole and used for fixing a friction plate, the side surface of the four-piston fixed cylinder body is grooved and used for communicating four-piston oil ways and assembling a copper gasket, and threaded holes are formed in the side surface of the four-piston fixed cylinder body and used for installing a sealing base and a dust guard.
The piston and the sealing ring are in a clearance self-adjusting mode, the sealing ring has a return function, and a groove is formed in the inner wall of the piston and used for fixing the friction plate;
the friction plate is arc-shaped in outline and is matched with the brake drum, and a silencing plate and a double-blade clamping jaw which is clamped on the piston are arranged on a back plate of the friction plate;
two round holes are processed on the copper gasket and used for filling brake fluid and exhausting air;
the side surface of the sealing base is provided with two mounting holes for mounting an oil pipe and an air release valve, and the side surface of the sealing base is provided with eight through holes for assembling a hub bearing and a four-piston fixed cylinder body;
the dust guard, the big through-hole in middle is used for keeping away from sealed base.
Compared with the prior art, the utility model has the advantages of as follows:
1. the four-piston fixed drum brake assembly of the utility model has small volume and space and convenient arrangement;
2. in the four-piston fixed drum brake assembly, the brake cylinder body is of a four-piston fixed type, the brake efficiency is high, the piston return is stable, and the pedal stroke can be effectively shortened;
3. in the four-piston fixed drum brake assembly, the friction area of the single friction plate is small, the braking efficiency is stable, and the squeak abnormal sound can be avoided;
4. in the four-piston fixed drum brake assembly, the parts have simple and regular structure and low manufacturing and processing cost of the die;
5. the utility model discloses in the fixed drum brake assembly of four pistons, zero dragging can be realized to friction disc and piston zonulae occludens.
Drawings
Fig. 1 is a schematic structural view of the four-piston fixed drum brake assembly of the present invention.
Detailed Description
The four-piston fixed drum brake assembly of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a four piston fixed drum brake assembly includes: a four-piston fixed cylinder 16; a sealing base 18 and a dust guard 12 mounted on the four-piston fixed cylinder 16; a purge valve 20 mounted on the seal mount 18; a copper gasket 11 mounted on the four-piston fixed cylinder 16; a piston 6 mounted on the four-piston fixed cylinder 16; a friction plate 8 mounted on the piston 6; a hub bearing mounted on the seal mount 18; a brake drum 1 mounted on a hub bearing.
The four-piston fixed cylinder body 16 is provided with four piston holes (namely a cylinder hole 10), a sealing groove 5 provided with a sealing ring 7 is machined in each piston hole, a rectangular groove (namely a friction plate clamping groove 4) is machined at the end part of each piston hole and used for fixing a friction plate 8, a groove is formed in the side surface of the four-piston fixed cylinder body 16 and used for communicating four-piston oil ways and assembling a copper gasket 11, and a threaded hole is formed in the side surface of the four-piston fixed cylinder body 16 and used for installing a sealing base 18 and a dust guard 12.
The piston 6 and the sealing ring 7 are in a clearance self-adjusting mode, the sealing ring 7 has a return function, and a groove is formed in the inner wall of the piston 6 and used for fixing a friction plate;
the friction plate 8 is arc-shaped and is used for matching with the brake drum 1, and a silencing plate and a double-blade clamping jaw 15 which is clamped on the piston 6 are arranged on the back plate of the friction plate 8;
two round holes are processed on the copper washer 11 and used for filling brake fluid and exhausting air;
the side surface of the sealing base 18 is provided with two oil inlet holes 14 for installing an oil pipe and an air release valve 20, and the side surface of the sealing base 18 is provided with eight through holes for assembling a hub bearing and a four-piston fixed cylinder body;
the dust guard 12, the middle large through hole is used for avoiding the sealing base 18.
As shown in fig. 1, a seal ring 7 is installed in a seal groove 5 on the inner wall of a cylinder hole 10 of a four-piston fixed cylinder 16, a piston 6 is pressed into the cylinder hole 10 of the four-piston fixed cylinder 16, a friction plate 8 is installed in a friction plate slot 4 of the four-piston fixed cylinder 16, meanwhile, the friction plate 8 is clamped in a clamping groove 9 in the piston 6 through a double-blade clamping jaw 15 on a back plate of the friction plate, a copper gasket 11 with two small holes is arranged in a T-shaped groove 17 of a four-piston fixed cylinder 16, a sealing base 18 is assembled on the four-piston fixed cylinder 16 through a bolt 21, a deflation valve 20 is arranged in a deflation valve mounting threaded hole 19 of the sealing base 18, an oil inlet hole 14 in the sealing base 18 is used for connecting an oil pipe, a dust guard plate 12 is assembled on the four-piston fixed cylinder 16 through a bolt 13, a flange 3 on the inner side of a hub bearing and the sealing base 18 are matched and fixed on a steering knuckle, and a flange 2 on the outer side of the hub bearing is matched with the. When braking, brake fluid enters an oil way of the T-shaped groove 17 through the oil inlet 14 and the small holes in the copper washer 11, and respectively enters the four cylinder holes 10 along the oil way, so that the piston 6 is pushed to further push the friction plate 8 to move along the radial outer side, the gap between the friction plate 8 and the brake drum 1 is eliminated, friction is further generated between the friction plate 8 and the brake drum 1, the rotating speed of the brake drum 1 is reduced, and braking is realized; when the brake is released, the piston 6 moves a certain distance along the radial inner side under the action of the deformation force of the sealing ring 7, so that the clearance between the brake drum 1 and the friction plate 8 is stabilized in a reasonable range, and the dragging is avoided.
The above-mentioned detailed description of the technical solution and the beneficial effects of the present invention have been described in detail, it should be understood that the above is only the most preferred embodiment of the present invention, not used for limiting the present invention, any modification, supplement, equivalent replacement, etc. made within the principle scope of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A four-piston fixed drum brake assembly comprising:
the four pistons fix the cylinder body;
the sealing base and the dust guard are arranged on the four-piston fixed cylinder body;
a purge valve mounted on the sealing seat;
the copper gasket is arranged on the four-piston fixed cylinder body;
the piston is arranged on the four-piston fixed cylinder body;
a friction plate mounted on the piston;
a hub bearing mounted on the seal mount;
a brake drum mounted on the hub bearing.
2. A four-piston fixed drum brake assembly according to claim 1, in which said four-piston fixed cylinder has four piston bores, each piston bore having a seal groove fitted with a seal ring, the ends of said piston bores having rectangular grooves for fixing friction plates.
3. A four-piston fixed drum brake assembly according to claim 2, in which said four-piston fixed cylinder is flanked by channels for communication of four-piston oil passages and for fitting of copper washers.
4. A four-piston fixed drum brake assembly according to claim 2, wherein said four-piston fixed cylinder is threaded on its side for mounting a sealing seat and dust-proof.
5. A four-piston fixed drum brake assembly according to claim 1, wherein said friction plates are arcuate in profile.
6. A four-piston fixed drum brake assembly according to claim 5, in which the back plate of said friction plate is provided with a noise damping plate and a double-bladed pawl for snap-engagement on said piston.
7. A four-piston fixed drum brake assembly according to claim 1, wherein said copper washer is machined with two circular holes for brake fluid filling and exhaust.
8. A four-piston fixed drum brake assembly according to claim 1, wherein said sealing seat is flanked by two mounting holes for mounting an oil line and a gas release valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021722778.0U CN212407387U (en) | 2020-08-18 | 2020-08-18 | Four-piston fixed drum brake assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021722778.0U CN212407387U (en) | 2020-08-18 | 2020-08-18 | Four-piston fixed drum brake assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407387U true CN212407387U (en) | 2021-01-26 |
Family
ID=74374870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021722778.0U Active CN212407387U (en) | 2020-08-18 | 2020-08-18 | Four-piston fixed drum brake assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212407387U (en) |
-
2020
- 2020-08-18 CN CN202021722778.0U patent/CN212407387U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 627, enterprise service center, No.17, section 3, Lingang Avenue, Lingang Economic Development Zone, Yibin City, Sichuan Province, 644000 Patentee after: Yibin Yizhi New Energy Vehicle Technology Co.,Ltd. Address before: Room 627, enterprise service center, No.17, section 3, Lingang Avenue, Lingang Economic Development Zone, Yibin City, Sichuan Province, 644000 Patentee before: Yibin Tongji Automobile Research Institute Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |