CN109253192A - A kind of disk brake - Google Patents
A kind of disk brake Download PDFInfo
- Publication number
- CN109253192A CN109253192A CN201811370613.9A CN201811370613A CN109253192A CN 109253192 A CN109253192 A CN 109253192A CN 201811370613 A CN201811370613 A CN 201811370613A CN 109253192 A CN109253192 A CN 109253192A
- Authority
- CN
- China
- Prior art keywords
- self
- sliding axle
- piston
- regulated
- brake
- 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.)
- Pending
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 44
- 239000000428 dust Substances 0.000 claims abstract description 8
- 230000001012 protector Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000009987 spinning Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
- F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
Abstract
This application involves a kind of disk brakes, belong to motor vehicle braking system field.A kind of disk brake of the invention includes: braking clamp body (1)；Brake-caliper support (2)；Sliding axle (3)；The sliding axle (3) includes: main sliding axle (30)；Secondary sliding axle (31)；It slides axle bolt (32)；It slides shaft dust protector (33)；Hydraulic cylinder (4)；Hydraulic cylinder body (40)；Piston (41)；Piston seal (42)；Clearance self-adjusting device (5)；Self-regulated segment hub seal circle (51)；Self-regulated screw rod (52)；Baffle (53)；Thrust ball bearing (54)；Self-regulated nut (55)；Nut torsional spring (56)；Piston shield (43)；The lash adjusting device of disk brake of the invention can adjust the gap increased due to abrasion in time automatically, can continuously adjust so that brake clearance remains within scope of design.The security performance of vehicle is improved, time delay when brake effect is eliminated, ensure that the good braking ability of vehicle.
Description
Technical field
This application involves motor vehicle braking system field more particularly to a kind of disk brakes.
Background technique
Brake refers to the component for generating braking moment, power to hinder vehicle movement or movement tendency.Automobile at present
In mostly use friction brakes, it generates braking moment using the friction of fixing element and rotating element working surface.
What the caliper of disc brake with floating caliper was typically designed can be slid axially with relative brake disk.Wherein only in brake disc
Inside hydraulic cylinder is set, and the brake block in outside is then attached on caliper.
When braking, piston pushes brake disc under the action of hydraulic coupling, by movable brake block.At the same time, system is acted on
Reaction force on moving caliper pushes braking clamp body to move right along guide pin, makes to be fixed on the fixation brake block on braking clamp body
It presses against in brake disc.Then, the friction block of brake disc two sides clamps brake disc under action of hydraulic force, is allowed on the disc brake rotor
The opposite braking moment of the direction of motion is resulted from, automobile brake is promoted.
Disk brake is since braking moment is big, and thermal stability and braking ability are good, and outer dimension is small, and abrasion is small, extensively
It is general to be applied to brake system of car.But current disk brake makes to live using the elasticity and quantitative deformation of piston seal
Position and self-regulated gap are got back into, it is very high for the elasticity of piston seal, heat resistance, wearability and surface roughness requirements, no
Braking ability can be completely secured.
Existing brake clamp have the disadvantage in that the braking principle due to brake is by interior friction block and outer
Friction between friction block is braked, and heat will necessarily be generated in braking process, and the thermal conductivity of metal material is good, and heat will
It is transferred to working chamber by piston, causes the brake fluid oil temperature in working chamber to increase, accelerates the gasification and emulsification of brake fluid, from
And vehicle braking performances is caused to reduce, threaten vehicle safety；It is coupled due to wear-resisting between metallic piston and metal brake caliper body
The problem of property, also causes to be easy to generate abrasion between the two, reduce the service life of brake.
Summary of the invention
This application provides a kind of disk brake, it can guarantee the reliability for thoroughly releasing braking, be special gap
The disposable adjustment of friction limit may be implemented in self-adjusting apparatus.
The present invention provides a kind of disk brake, comprising: braking clamp body；Brake-caliper support；Sliding axle, the sliding axle packet
Include main sliding axle, secondary sliding axle, sliding axle bolt and sliding shaft dust protector；The braking clamp body by the sliding axle bolt and
The sliding axis connection；The main sliding axle and the secondary sliding axle are located at the both ends of the braking clamp body；The sliding
Shaft dust protector surrounds the sliding axle；The sliding axle activity is inserted in the hole of the brake-caliper support；The braking clamp body edge
The sliding axle is in axial sliding；
Hydraulic cylinder, the hydraulic cylinder include hydraulic cylinder body, piston, piston seal, clearance self-adjusting device and piston shield
Cover；The clearance self-adjusting device includes self-regulated segment hub seal circle, self-regulated screw rod, baffle, thrust ball bearing, self-regulated nut and nut
Torsional spring；
The piston seal is located on the annular groove of the hydraulic cylinder body；The piston is matched with the hydraulic cylinder body
It closes；The self-regulated screw rod pass through the braking clamp body hole, the threaded one end part spinning of the self-regulated screw rod the self-regulated
Nut；The flange portion of the self-regulated nut is fixed by nut torsional spring；One end of the nut torsional spring is fixed on the piston,
The other end freely abuts against the flange of the self-regulated nut；The thrust ball bearing is fixed on the other side of self-regulated nut, and by
The baffle closing；The self-regulated segment hub seal circle is mounted on the self-regulated screw rod；The piston shield is mounted on the work
It fills at bottom and the hydraulic cylinder body slotted engagement.
Preferably, the piston seal is O-ring seal.Its used rubber material is light, easy to process, price
Cheaply, so that braking clamp body it is light-weight, and manufacturing cost is low.
Preferably, the fit-up gap between the thrust ball bearing and baffle is equal to complete when brake clearance is setting value
Piston stroke needed for full application of brake.
A kind of disk brake provided herein, compared with prior art, the lash adjusting device energy in brake
It is enough to adjust the gap increased due to abrasion in time automatically, it can continuously adjust so that brake clearance remains at design model
Within enclosing.The security performance of vehicle is improved, time delay when brake effect is eliminated, ensure that the good braking of vehicle
Energy.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Application.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of disk brake provided by the embodiment of the present application；
Fig. 2 is a kind of partial structure diagram of disk brake provided by the embodiment of the present application.
Appended drawing reference: 1- braking clamp body；2- brake-caliper support；3- sliding axle；4- hydraulic cylinder；The main sliding axle of 30-；31- pair
Sliding axle；32- slides axle bolt；33- slides shaft dust protector；40- hydraulic cylinder body；41- piston；42- piston seal；43-
Piston shield；5- clearance self-adjusting device；51- self-regulated segment hub seal circle；52- self-regulated screw rod；53- baffle；54- thrust ball bearing；
55- self-regulated nut；56- nut torsional spring.
The drawings herein are incorporated into the specification and forms part of this specification, and is used to explain together with specification
The principle of the application.
Specific embodiment
The application is described in further detail below by specific embodiment and in conjunction with attached drawing.
A kind of disk brake provided by the embodiment of the present application, as shown in Figs. 1-2, comprising: braking clamp body 1；Caliper
Bracket 2；Sliding axle 3；Sliding axle 3 includes: main sliding axle 30；Secondary sliding axle 31；Slide axle bolt 32；Slide shaft dust protector 33；
Hydraulic cylinder 4；The hydraulic cylinder 4 includes hydraulic cylinder body 40；Piston 41；Piston seal 42；Clearance self-adjusting device 5；Self-regulated spiral shell
Bar sealing ring 51；Self-regulated screw rod 52；Baffle 53；Thrust ball bearing 54；Self-regulated nut 55；Nut torsional spring 56；Piston shield 43.
The brake-caliper support 2 is fixed on vehicle steering knuckle；The braking clamp body 1 by the sliding axle bolt 32 and
The sliding axle 3 connects；The main sliding axle 30 and the secondary sliding axle 31 are located at the both ends of the braking clamp body 1；Institute
It states sliding shaft dust protector 33 and surrounds the sliding axle 3；Sliding axle 3 is inserted into actuation in the hole of the brake-caliper support 2 and cooperates；It is described
Braking clamp body 1 is in axial sliding along the sliding axle 3.
Piston seal 42 is located on the annular groove of the hydraulic cylinder body 40；The piston 41 and the hydraulic cylinder body
40 cooperations；Self-regulated screw rod 52 pass through the braking clamp body 1 hole, the threaded one end part spinning of the self-regulated screw rod 52 self-regulated
Nut 55；The flange portion of self-regulated nut 55 is fixed by nut torsional spring 56；One end of the nut torsional spring 56 is fixed on piston,
The other end freely abuts against the flange of self-regulated nut 55；The thrust ball bearing 54 is fixed on the other side of self-regulated nut 55,
And it is closed by the baffle 53；The self-regulated segment hub seal circle 51 is mounted on the self-regulated screw rod 52；The piston shield 43
It is mounted on 41 bottom of piston, the opening Cao Chu and piston 41 for being stuck in hydraulic cylinder 40 cooperate, and piston shield 43 has dust-proof
The function of cover, plays a protective role to piston.Fit-up gap between thrust ball bearing 54 and baffle 53 is equal to brake clearance
To brake required piston stroke completely when setting value.Brake further includes friction block abrasion alarm switch.When the thickness of friction plate
When degree may wear to minimum thickness allowable, alarm switch just connects circuit to driver's signal an alert.
The gasification and emulsification that two seals have delayed brake fluid can be used in piston seal 42, effectively increases vehicle peace
Quan Xing, the wear-resisting coupling between rubber material and metal decrease well the abrasion between piston and braking clamp body, improve
The service life of brake.
Piston seal 42 is O-ring seal.Its used rubber material is light, easy to process, cheap, thus
So that braking clamp body is light-weight, and manufacturing cost is low.
When implementing service brake in the case where brake clearance is greater than the set value, piston 41 moves under hydraulic action,
Piston 41 pushes friction block assembly and vehicle chocking disk to completely attach to, and realizes braking completely.When baffle 53 and thrust ball bearing 54
Between gap disappear after, hydraulic thrust suffered by piston 41 will pass through thrust ball bearing 54 and act on 55 flange of self-regulated nut,
This axial force just forces self-regulated nut 55 to rotate, and is moved to brake clearance relative to self-regulated screw rod 52 with piston 41 and disappears
Until.
At this point, nut torsional spring 56 opens and its bung flange diameter slightly increases, when brake release, hydraulic to remove, piston is close
Seal 42 makes piston 41 return to the position that brake clearance is equal to setting value, and the free end of nut torsional spring 56 is due to suffered friction
Torque disappears and goes back to original position, and it is motionless that self-regulated nut 47 is then maintained at the axial position reached when braking, to ensure that baffle
Gap between 53 and thrust ball bearing 54 is initial value.
The beneficial effects of the present application are as follows: the lash adjusting device of disk brake of the invention can be adjusted in time automatically
The whole gap increased due to abrasion can continuously adjust so that brake clearance remains within scope of design.Improve vehicle
Security performance, eliminate brake effect when time delay, ensure that the good braking ability of vehicle.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (3)
1. a kind of disk brake characterized by comprising
Braking clamp body (1)；
Brake-caliper support (2)；
Sliding axle (3), the sliding axle (3) include main sliding axle (30), secondary sliding axle (31), sliding axle bolt (32) and slide
Shaft dust protector (33)；The braking clamp body (1) is connect by the sliding axle bolt (32) with the sliding axle (3)；The master
Sliding axle (30) and the secondary sliding axle (31) are located at the both ends of the braking clamp body (1)；The sliding shaft dust protector
(33) sliding axle (3) is surrounded；Sliding axle (3) activity is inserted in the hole of the brake-caliper support (2)；The caliper
Body (1) is in axial sliding along the sliding axle (3)；
Hydraulic cylinder (4), the hydraulic cylinder (4) include hydraulic cylinder body (40), piston (41), piston seal (42), gap from
Adjust device (5) and piston shield (43)；
The clearance self-adjusting device (5) includes self-regulated segment hub seal circle (51), self-regulated screw rod (52), baffle (53), thrust ball axis
Hold (54), self-regulated nut (55) and nut torsional spring (56)；The piston seal (42) is located at the hydraulic cylinder body (40)
On annular groove；The piston (41) and the hydraulic cylinder body (40) cooperate；The self-regulated screw rod (52) passes through the caliper
The hole of body (1), the threaded one end part spinning of the self-regulated screw rod (52) the self-regulated nut (55)；The self-regulated nut
(55) flange portion is fixed by nut torsional spring (56)；One end of the nut torsional spring (56) is fixed on the piston (41),
The other end freely abuts against the flange of the self-regulated nut (55)；The thrust ball bearing (54) is fixed on self-regulated nut (55)
The other side, and closed by the baffle (53)；The self-regulated segment hub seal circle (51) is mounted on the self-regulated screw rod (52)；Institute
Piston shield (43) is stated to be mounted at the piston (41) bottom and the hydraulic cylinder body (40) slotted engagement.
2. a kind of disk brake according to claim 1, which is characterized in that the piston seal (42) is O-shaped close
Seal.
3. a kind of disk brake according to claim 1, which is characterized in that the thrust ball bearing (46) and the gear
Required piston stroke is braked when setting value equal to brake clearance in fit-up gap between piece (45) completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811370613.9A CN109253192A (en) | 2018-11-17 | 2018-11-17 | A kind of disk brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811370613.9A CN109253192A (en) | 2018-11-17 | 2018-11-17 | A kind of disk brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253192A true CN109253192A (en) | 2019-01-22 |
Family
ID=65044538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811370613.9A Pending CN109253192A (en) | 2018-11-17 | 2018-11-17 | A kind of disk brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109253192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321218A (en) * | 2020-09-29 | 2022-04-12 | 比亚迪股份有限公司 | Disc brake and vehicle with same |
-
2018
- 2018-11-17 CN CN201811370613.9A patent/CN109253192A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321218A (en) * | 2020-09-29 | 2022-04-12 | 比亚迪股份有限公司 | Disc brake and vehicle with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190122 |
|
| WD01 | Invention patent application deemed withdrawn after publication |