CN108953424B - Eccentric pull-only structural hydraulic brake caliper - Google Patents
Eccentric pull-only structural hydraulic brake caliper Download PDFInfo
- Publication number
- CN108953424B CN108953424B CN201810707012.6A CN201810707012A CN108953424B CN 108953424 B CN108953424 B CN 108953424B CN 201810707012 A CN201810707012 A CN 201810707012A CN 108953424 B CN108953424 B CN 108953424B
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- Prior art keywords
- eccentric
- friction block
- pull
- shell
- brake caliper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
Abstract
The invention relates to the technical field of brake calipers, in particular to an eccentric pull-only structural hydraulic brake caliper, which comprises a guide pin, a buffer sleeve, a retaining spring, an inner friction block, an outer friction block, an eccentric shell, a piston and a pull-only structural support, wherein two sides of the eccentric shell are connected with the pull-only structural support through the guide pin and the buffer sleeve, the eccentric shell is connected with the outer friction block through the retaining spring, and the inner friction block is connected with the piston through another retaining spring. Compared with the prior art, the invention designs the tension-only structure bracket with the outer beam, so that the integral rigidity is improved, the machining stability is greatly improved, and the tolerance zone is greatly reduced, thereby providing more favorable support for improving eccentric wear, noise and dragging; the eccentric shell is matched with the pull-only structure support, eccentric wear of the friction plate is reduced to the maximum extent, and low frequency and knocking abnormal sound noise are improved. The hydraulic brake caliper has the advantages that the dragging, eccentric wear and noise conditions are also well improved.
Description
Technical Field
The invention relates to the technical field of brake calipers, in particular to an eccentric pull-only structural hydraulic brake caliper.
Background
The brake caliper is fixed on the steering knuckle through the bracket mounting hole and can slide relative to the bracket along the guide pin in the axial direction. Under the action of brake pressure, the piston pushes the piston side friction block, so that the piston side friction block is pressed against the brake disc. Meanwhile, the brake pressure pushes the brake caliper shell to move along the guide pin, so that the fist side friction block is pressed against the brake disc, and braking force is generated. Then, both sides of the brake disk are sandwiched by the friction pads, and braking is performed. The brake disc is in turn fastened to the wheel hub so that the wheel also stops rotating.
As the brake is applied, the pad is worn and the clearance between the pad and the disc increases, and the caliper generally has a clearance automatic compensation function to maintain the stability of the clearance. When braking, the piston sealing ring can elastically deform; when the brake is released, the sealing ring is deformed to drive the piston to return to the original position. After the friction block is abraded, the disc clearance is increased, the piston displacement is increased during braking, and the sealing ring and the piston generate relative displacement on a contact surface; after the pressure is released, the backward movement amount of the piston still only depends on the recovery deformation of the sealing ring, so that the compensation of the clearance of the friction block is realized, the clearance is kept with certain stability, and the stable state of the braking mode in theory is achieved.
With the increasing requirements of the customer market on the aspects of automobile travelling comfort, environmental protection and energy conservation, new requirements are provided for developers in the aspects of noise such as dragging, eccentric wear, screaming, knocking abnormal sound and the like of the brake caliper. The development of a brake caliper with low drag, low eccentric wear and noise improvement is imperative.
The existing brake caliper support is generally of a push-pull structure without an outer beam or a push-only structure with an outer beam. The structure of only pushing away of outband roof beam because the function that the clutch blocks backplate did not draw, so for only pushing away the state forever, under this kind of mode, because the moment that the clutch blocks backplate tup atress produced can aggravate the skew at clutch blocks atress center to cause the eccentric wear easily, make because the trend increase of the dragging that the eccentric wear caused, noise etc.. The friction plate is provided with a friction plate and a friction block, wherein the friction plate is provided with a friction surface, the friction surface is provided with a friction block, the friction block is arranged on the friction surface, and the friction block is arranged on the friction surface.
Most of the brake calipers are assembled on the shaft in the following way: the upper part of the shaft is designed to be smaller or form an included angle of zero degree with the horizontal line. The influence of the dead weight of the friction block and the dead weight of the brake caliper shell assembly in a symmetrical positioning mode on the gap is obvious, and meanwhile, the impact equivalent of the rebound of the sealing ring and the shell after pressure release on the friction block is large, so that the tendency of knocking abnormal sound and eccentric wear is easily caused.
In the existing brake caliper, a large span, a plane support or a small span and a single point support is generally adopted between an outer friction block and a shell. The large-span and plane support is stable, but the plane support forms clearance fit, and abnormal noise is easily caused. The small span and the single point support are unstable in support of the small span and easy to cause instability in the radial direction due to the single point support compared with the large span.
Therefore, it is desirable to design an eccentric pull-only type hydraulic brake caliper with low drag, low eccentric wear, and improved noise.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the eccentric pull-only structure type hydraulic brake caliper with low dragging, low eccentric wear and noise improvement.
In order to achieve the aim, the invention relates to an eccentric pull-only structural hydraulic brake caliper, which comprises a guide pin, a buffer sleeve, a retaining spring, an inner friction block, an outer friction block, an eccentric shell, a piston and a pull-only structural support, and is characterized in that: the two sides of the eccentric shell are connected with the tension-only structure support through guide pins and buffer sleeves, the eccentric shell is connected with the outer friction block through a retaining spring, and the inner friction block is connected with the piston through another retaining spring.
The outer friction block and the inner friction block respectively comprise a vibration reduction sheet, a back plate and friction materials, two ends of the top of the back plate of the outer friction block and two ends of the eccentric shell are respectively supported by circular arcs, and gapless linear contact is kept between the back plate of the outer friction block and the eccentric shell.
The tension-only structure support comprises a support body and an outer beam, the two ends of the support body are connected through the outer beam, the support body is in contact with hammer heads at the two ends of the back plate of the outer friction block, and the moment generated after the hammer heads are stressed reduces the deflection of the stress center of the outer friction block.
The offset of the center of the eccentric shell is 0.2-0.4 mm, the eccentric shell overcomes the influence of the self weight of an outer friction block and the self weight of a brake caliper shell assembly on a gap, and the tendency of knocking abnormal sound and eccentric wear is improved.
The part numbers of the damping sheets of the outer friction block and the inner friction block are the same, and the part numbers of the back plate of the outer friction block and the back plate of the inner friction block are the same.
And a protective plug is arranged at the end part of the guide pin.
The upper end of the eccentric shell is provided with an air release bolt, and the end part of the air release bolt is provided with a dust cap.
The piston is positioned in the eccentric shell, and a sealing ring and a dust cover are arranged on the piston.
And the inner friction block is provided with a wear alarm.
And a vibration reduction sheet is fixed on one side of the back plate, and a friction material is fixed on the other side of the back plate.
Compared with the prior art, the invention designs the tension-only structure bracket with the outer beam, so that the integral rigidity is improved, the machining stability is greatly improved, and the tolerance zone is greatly reduced, thereby providing more favorable support for improving eccentric wear, noise and dragging; the eccentric shell is matched with the pull-only structure bracket, so that eccentric wear of the friction plate is reduced to the maximum extent, and low frequency and knocking abnormal sound noise are improved; after assembly, the back plate of the outer friction block is in gapless linear contact with the eccentric shell, so that a stable contact state is achieved, and the improvement of noise, vibration and sound vibration roughness performance is facilitated. The hydraulic brake caliper has the advantages that the dragging, eccentric wear and noise conditions are also well improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of the present invention.
FIG. 3 is a schematic structural view of the inner friction block and the outer friction block of the present invention.
FIG. 4 is a schematic view of the structure of the pull-only structural stent of the present invention.
FIG. 5 is a force diagram of the tension-only structural support of the present invention.
FIG. 6 is a schematic structural diagram of the eccentric housing according to the present invention.
FIG. 7 is a partially enlarged view of the arc support between the back plate and the eccentric housing according to the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1-2, the invention is a hydraulic brake caliper with an eccentric pull-only structure, comprising a guide pin, a buffer sleeve, a retaining spring, an inner friction block, an outer friction block, an eccentric shell, a piston and a pull-only structure support, wherein the brake caliper is fixed on a chassis steering knuckle by the pull-only structure support 16 to transmit tangential force, two sides of the eccentric shell 12 are connected with the pull-only structure support 16 by the guide pin 4 and the buffer sleeve 5, the eccentric shell 12 is connected with the outer friction block by the retaining spring 6, and the inner friction block is connected with the piston 13 by the other retaining spring 7.
Referring to fig. 3, the outer friction block and the inner friction block each include a damping sheet 8, a back plate 9 and a friction material 10, the damping sheet 8 is fixed on one side of the back plate 9, and the friction material 10 is fixed on the other side of the back plate 9. Referring to fig. 7, the two ends of the top of the back plate 9 of the outer friction block and the two ends of the eccentric shell 12 are respectively supported by circular arcs, and the back plate 9 of the outer friction block and the eccentric shell 12 are in gapless linear contact. The span of the two arc supporting points is large, and the arc supporting mode enables the back plate 9 and the eccentric shell 12 to be in linear contact under any condition, so that stable support is formed between the back plate 9 and the eccentric shell 12, and the working mode of the outer friction block is more stable. Two-point circular arc support with large span realizes a stable system with gapless fit in radial and tangential directions under any condition, and greatly improves noise abnormal sound.
Referring to fig. 4-5, the tension-only structural support 16 includes a support body and an outer beam, the two ends of the support body are connected by the outer beam, and the outer beam is added on the basis of the push-pull structural support 16, so that the stress mode of the support is changed into tension-only, the stress mode of the support is optimized, and the control of tolerance is optimized. The support body contacts with the hammers at the two ends of the back plate 9 of the outer friction block, and the moment generated after the hammers are stressed reduces the deviation of the stressed center of the outer friction block, so that the pressure distribution of the friction surface is more uniform, the eccentric wear is optimized, and the influences of dragging, noise and the like caused by the eccentric wear are reduced.
Referring to fig. 6, the offset of the center of the eccentric shell 12 is 0.2-0.4 mm, the eccentric shell 12 overcomes the influence of the dead weight of the outer friction block and the dead weight of the brake caliper shell assembly on the gap, and simultaneously reduces the impact equivalent of the rebound after the brake pressure is released on the outer friction block, thereby achieving the purpose of improving the tendency of knocking abnormal sound and eccentric wear. The degree of the clearance between the inner open stop of the friction block and the broach slot of the bracket and the rebound amount of the stressed shell determine the definition of the eccentricity degree. From a standardized design point of view, the values are generally fixed unless the customer has special non-standard requirements.
The part numbers of the vibration reduction sheet 8 of the outer friction block and the vibration reduction sheet 8 of the inner friction block are the same, and the part numbers of the back plate 9 of the outer friction block and the back plate 9 of the inner friction block are the same, so that the design workload is reduced, the logistics cost is reduced, and the assembly efficiency is improved.
In the present invention, the end of the guide pin 4 is provided with a protective plug 3 to prevent contamination of the guide pin 4. The upper end of the eccentric shell 12 is provided with an air discharging bolt 2, and the end part of the air discharging bolt 2 is provided with a dustproof cap 1, so that the system can discharge air conveniently, and the air discharging bolt is prevented from being polluted and corroded. And the inner friction block is provided with a wear alarm 11, and the wear condition of the inner friction block 11 is alarmed.
The piston 13 is positioned in the eccentric shell 12, a sealing ring 14 and a dust cover 15 are arranged on the piston 13, the eccentric shell 12 transmits hydraulic pressure to form clamping force, the piston 13 transmits the hydraulic pressure to the friction block, the sealing ring 14 prevents leakage between the piston 13 and the eccentric shell 12, and the dust cover 15 prevents a piston hole of the eccentric shell 12 from being corroded and polluted.
Claims (7)
1. The utility model provides an eccentric only draws structural formula hydraulic braking calliper, includes uide pin, buffer tube, keeps spring, interior clutch blocks, outer clutch blocks, eccentric formula casing, piston and only draws the structural support, its characterized in that: the two sides of an eccentric shell (12) are connected with a pull-only structural support (16) through guide pins (4) and a buffer sleeve (5), the eccentric shell (12) is connected with an outer friction block through a retaining spring (6), the inner friction block is connected with a piston (13) through another retaining spring (7), the outer friction block and the inner friction block respectively comprise a vibration damping sheet (8), a back plate (9) and friction materials (10), two ends of the top of the back plate (9) of the outer friction block are respectively supported by circular arcs with two ends of the eccentric shell (12), the back plate (9) of the outer friction block is in gapless linear contact with the eccentric shell (12), the pull-only structural support (16) comprises a support body and an outer beam, two ends of the support body are connected through the outer beam, the support body is in contact with hammer heads at two ends of the back plate (9) of the outer friction block, the moment generated after the hammer is stressed reduces the offset of the stress center of the outer friction block, the offset of the center of the eccentric shell (12) is 0.2-0.4 mm, the eccentric shell (12) overcomes the influence of the self weight of the outer friction block and the brake caliper shell assembly on the gap, and the tendency of knocking abnormal sound and eccentric wear is improved.
2. The hydraulic brake caliper of an eccentric pull-only configuration according to claim 1, wherein: the part numbers of the damping sheets (8) of the outer friction block and the damping sheets (8) of the inner friction block are the same, and the part numbers of the back plate (9) of the outer friction block and the back plate (9) of the inner friction block are the same.
3. The hydraulic brake caliper of an eccentric pull-only configuration according to claim 1, wherein: the end part of the guide pin (4) is provided with a protective plug (3).
4. The hydraulic brake caliper of an eccentric pull-only configuration according to claim 1, wherein: the upper end of the eccentric shell (12) is provided with an air release bolt (2), and the end part of the air release bolt (2) is provided with a dust cap (1).
5. The hydraulic brake caliper of an eccentric pull-only configuration according to claim 1, wherein: the piston (13) is positioned in the eccentric shell (12), and a sealing ring (14) and a dust cover (15) are arranged on the piston (13).
6. The hydraulic brake caliper of an eccentric pull-only configuration according to claim 1, wherein: and a wear alarm (11) is arranged on the inner friction block.
7. The hydraulic brake caliper of an eccentric pull-only configuration according to claim 1, wherein: and a vibration reduction sheet (8) is fixed on one side of the back plate (9), and a friction material (10) is fixed on the other side of the back plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707012.6A CN108953424B (en) | 2018-07-02 | 2018-07-02 | Eccentric pull-only structural hydraulic brake caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707012.6A CN108953424B (en) | 2018-07-02 | 2018-07-02 | Eccentric pull-only structural hydraulic brake caliper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953424A CN108953424A (en) | 2018-12-07 |
| CN108953424B true CN108953424B (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810707012.6A Active CN108953424B (en) | 2018-07-02 | 2018-07-02 | Eccentric pull-only structural hydraulic brake caliper |
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| Country | Link |
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| CN (1) | CN108953424B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360650U (en) * | 2011-10-14 | 2012-08-01 | 浙江亚太机电股份有限公司 | Eccentric brake caliper |
| CN103967978A (en) * | 2013-02-05 | 2014-08-06 | 上海大陆汽车制动系统销售有限公司 | Hydraulic pin slide type caliper without support |
| CN204371997U (en) * | 2014-12-08 | 2015-06-03 | 上海汽车制动系统有限公司 | A kind of brake calipers being provided with reinforced backboard |
| CN105020301A (en) * | 2015-08-05 | 2015-11-04 | 万向钱潮（上海）汽车系统有限公司 | Floating type caliper disc brake |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090059576A (en) * | 2007-12-07 | 2009-06-11 | 정철규 | Caliper for a braking system of an automobile |
| CN206329659U (en) * | 2016-12-31 | 2017-07-14 | 北京长城华冠汽车技术开发有限公司 | It is a kind of to reduce the friction plate system for dragging torque |
-
2018
- 2018-07-02 CN CN201810707012.6A patent/CN108953424B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360650U (en) * | 2011-10-14 | 2012-08-01 | 浙江亚太机电股份有限公司 | Eccentric brake caliper |
| CN103967978A (en) * | 2013-02-05 | 2014-08-06 | 上海大陆汽车制动系统销售有限公司 | Hydraulic pin slide type caliper without support |
| CN204371997U (en) * | 2014-12-08 | 2015-06-03 | 上海汽车制动系统有限公司 | A kind of brake calipers being provided with reinforced backboard |
| CN105020301A (en) * | 2015-08-05 | 2015-11-04 | 万向钱潮（上海）汽车系统有限公司 | Floating type caliper disc brake |
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| Publication number | Publication date |
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| CN108953424A (en) | 2018-12-07 |
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