CN105465248B - Brake clearance adjusts device and air-pressure disc brake - Google Patents
Brake clearance adjusts device and air-pressure disc brake Download PDFInfo
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- CN105465248B CN105465248B CN201510973543.6A CN201510973543A CN105465248B CN 105465248 B CN105465248 B CN 105465248B CN 201510973543 A CN201510973543 A CN 201510973543A CN 105465248 B CN105465248 B CN 105465248B
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- China
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- rotary shaft
- sprocket wheel
- cross bar
- pushing part
- eccentric lever
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Classifications
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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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/58—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with eccentric or helical body
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to brakes, a kind of brake clearance adjustment device is provided, including caliper body and regulating mechanism, regulating mechanism includes cross bar and eccentric lever, each through-hole is equipped with rotary shaft, two rotary shaft parallel interval settings, and its rotation axis is perpendicular to the rotation axis of eccentric lever, the wherein an end portion of each rotary shaft is provided with pushing part, it is equipped in two rotary shafts perpendicular to axial sprocket wheel, by chain drive between two sprocket wheels, and two sprocket wheels are respectively close to the middle position of corresponding rotary shaft edge axial direction;A kind of air-pressure disc brake, including above-mentioned adjustment device are also provided.In the present invention, when eccentric lever is by external force, the axial movement for allowing two pushing parts along rotary shaft is threadedly engaged by cross bar and two rotary shafts, and then the gap adjustment of corresponding friction plate may be implemented, two rotary shafts use the kind of drive of sprocket wheel chain close to intermediate position to guarantee that the two rotation synchronizes, and consistency is very high.
Description
Technical field
The present invention relates to brake more particularly to a kind of brake clearance adjustment devices and air-pressure disc brake.
Background technique
The one kind of air-pressure disc brake as disk brake, starts from the nineties in last century, can be widely applied and large size
Passenger car and lorry.Air-pressure disc brake rapid heat dissipation, light-weight, structure is simple, wearing clearance adjust automatically;It is especially resistance to
High-temperature behavior is good, and braking effect is stablized, and can substantially reduce braking distance, provides reliable driving for vehicle and ensures.It is domestic at present
The clearance self-regulating mechanism type for the especially double push rod air-pressure disc brakes of air-pressure disc brake that Wai Ge company develops is more,
However the synchronization mechanism of most of structure uses the driving and driven shaft of gear synchronous, the system resistance of generation is unstable, therefore is adjusting
It is not sufficiently stable when the wearing clearance of whole brake, causes service life short.
Summary of the invention
The purpose of the present invention is to provide a kind of brake clearances to adjust device, it is intended to for solving existing brake mill
Damage gap adjusts unstable problem.
The present invention is implemented as follows:
The embodiment of the present invention provides a kind of brake clearance adjustment device, including the caliper body with chamber and is set to
The indoor regulating mechanism of chamber, the regulating mechanism include tool there are two the cross bar of through-hole and the cross bar can be pushed along vertical
The directly eccentric lever mobile in its rotation axis direction, each through-hole are equipped with the rotary shaft being threadedly coupled with it, and two
A rotary shaft parallel interval setting, and its rotation axis is perpendicular to the rotation axis of the eccentric lever, each rotation
The wherein an end portion of shaft, which is provided with, pushes the pushing part moved along its axis by it, is equipped in two rotary shafts
Perpendicular at least one axial sprocket wheel, corresponded to two-by-two between each sprocket wheel in two rotary shafts, and corresponding two
It is connected by chain drive between a sprocket wheel, each sprocket wheel is close to the corresponding rotary shaft along axial direction
Between position.
Specifically, it is respectively positioned on the top with the cross bar corresponding position along each sprocket wheel of axial direction of two rotary shafts,
And it is located at the lower section of the eccentric lever.
Specifically, it offers on the cross bar and is located at two one-to-one two grooves of sprocket wheel, the sprocket wheel
With in its groove, and there is gap between axial inner wall the groove, the chain is along the cross bar outer surface
Setting.
Further, the end of each rotary shaft is connected between its corresponding described pushing part by circlip.
Further, further include the bottom cover being fixed on the caliper body, pass through bullet between the bottom cover and the cross bar
Property part connection, the elastic component along the rotary shaft axial direction setting.
Further, each rotary shaft all has the threaded hole being arranged towards the pushing part, the threaded hole spiral shell
Line is connected with the screw rod connecting with the pushing part.
Further, have additional support cylinder between the eccentric lever and the cross bar, the eccentric lever with
It is connected between the caliper body inner wall by bearing.
Further, the driving lever extended outward, the extension of the driving lever are provided on the periphery of the eccentric lever
Axial direction of the direction perpendicular to the eccentric lever.
Specifically, it is connected between each sprocket wheel and the corresponding rotary shaft by spline.
Specifically, two pushing parts are integral by connecting plate connection, are integrally formed.
The embodiment of the present invention also provides a kind of air-pressure disc brake, including friction plate, further includes between above-mentioned brake
Clearance adjustment apparatus, the friction plate is set in the caliper body and two pushing parts of face.
The invention has the following advantages:
In adjustment device of the invention, when there is active force on eccentric lever, eccentric lever is rotated about the axis, so as to
Push cross bar to generate displacement, due between cross bar and two rotary shafts to be threadedly coupled, after cross bar is moved along the axis of rotary shaft,
Two rotary shafts are driven to rotate around own axes, and two rotary shafts rotated can push corresponding pushing part along its axis
Line is mobile, for using sprocket wheel with the cooperation kind of drive of chain to realize the synchronous of the two rotation between two rotary shafts, into
And guarantee the synchronizing moving of two pushing parts, since two rotary shafts all have certain length along the direction of respective axis, then will
Two sprocket wheels are respectively arranged at rotary shaft close to intermediate position, and two rotary shafts can be made to rotate smoothly, the two rotation
Consistency it is very high.When the adjustment device to be applied on brake, two pushing parts are corresponding with friction plate, work as friction plate
It, then can be by adjusting two pushing parts to push corresponding friction plate mobile, so that the gap of friction plate is in when wearing
In zone of reasonableness, it can the purpose of friction plate gap adjustment is played, it is more convenient.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram for the regulating mechanism that brake clearance provided in an embodiment of the present invention adjusts device;
Fig. 2 is the structural schematic diagram that the brake clearance of Fig. 1 adjusts the caliper body of device;
The top view that the brake clearance that Fig. 3 is Fig. 1 adjusts device when not having bottom cover;
Fig. 4 is sectional view along A-A in Fig. 3;
The top view that the brake clearance that Fig. 5 is Fig. 1 adjusts device when having bottom cover;
Fig. 6 is B-B direction cross-sectional view in Fig. 5;
Fig. 7 is the structural schematic diagram at another visual angle that the brake clearance of Fig. 1 adjusts the regulating mechanism of device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Referring to figures 1-4, the embodiment of the present invention provides a kind of brake clearance adjustment device, including caliper body 1 and tune
Mechanism 2 is saved, caliper body 1 has chamber 11, and regulating mechanism 2 is installed in the chamber 11, and regulating mechanism 2 includes cross bar 21 and sets
The eccentric lever 22 being placed on cross bar 21, eccentric lever 22 being eccentrically rotated around itself, and then can push cross bar 21 along hang down
Directly mobile in the direction of 22 rotary shaft of eccentric lever, 23 line, the tool of cross bar 21 is worn in each through-hole 211 there are two through-hole 211
Equipped with rotary shaft 23, and rotary shaft 23 with, to be threadedly coupled, two rotary shafts 23 are parallel between its corresponding 211 inner wall of through-hole
Interval setting, and axis direction is also parallel with the moving direction of cross bar 21, the wherein an end portion of each rotary shaft 23 is respectively provided with
There is pushing part 24, corresponding pushing part 24 can be pushed to move along the direction of 23 line of rotary shaft after the rotation of rotary shaft 23,
Also equal ring sets at least one sprocket wheel 231 in each rotary shaft 23, and each sprocket wheel 231 between two rotary shafts 23 corresponds, and
Chain 232 is also all made of between corresponding two sprocket wheels 231 to be sequentially connected, and the installation position of sprocket wheel 231 is close to
The centre of corresponding rotary shaft 23.In the present embodiment, after eccentric lever 22 pushes cross bar 21 mobile, due to cross bar 21 and two
To be threadedly coupled between a rotary shaft 23, there is relative movement between cross bar 21 and rotary shaft 23, two rotations can be driven
Axis 23 is rotated around respective axis, and then drives corresponding pushing part 24 mobile by rotary shaft 23, and general pushing part 24 acts on
In the friction plate (not shown) of brake, by the impetus of pushing part 24 to guarantee that the gap of friction plate is in reasonable
In range, and when adjusting the gap of friction plate, the movement of two pushing parts 24 should keep synchronous, to this in two rotary shafts 23
Between be cooperatively connected using sprocket wheel 231 and chain 232, the transmission of 231 chain 232 of sprocket wheel can be one group, or multiple groups are led to
Cross it is this be sequentially connected so that two 23 synchronous rotaries of rotary shaft, then synchronous effect is on two pushing parts 24, and due to two
A rotary shaft 23 all has certain length on the direction along respective axis, and sprocket wheel 231 is set to rotary shaft 23 in
Between position can guarantee that the stationarity of drive mechanism, rotary shaft 23 will not generate deflection, in addition use 231 chain 232 of sprocket wheel
Transmission can obtain more accurate average ratios, suitable for larger center away from parallel axes between transmission, can be in dust, oil
It working in the adverse circumstances such as dirty, moist and high temperature, and the processing of 231 chain 232 of sprocket wheel is also fairly simple, required precision is not high,
Tensile force is small when it is driven, also smaller to the pressure of two rotary shafts 23.Connecting plate company can also be used in certain two pushing parts 24
It is connected in an entirety, three can be integrally formed and be made, i.e., two rotary shafts 23 drive a component mobile simultaneously, can also be into one
Step guarantees that two 24 synchronous effects of pushing part adjust friction plate gap, and for two rotary shafts 23, one of them is adjustment axis, separately
One is resetting shaft.
Referring to fig. 4 and Fig. 6 specifically for the position of sprocket wheel 231, can be divided into two kinds, mainly according to rotary shaft
23 and the length of cross bar 21 determine that one of which is the top that sprocket wheel 231 is located at cross bar 21, in the axis along rotary shaft 23
Direction sprocket wheel 231 between cross bar 21 and eccentric lever 22, specially along each sprocket wheel 231 of the axial direction of rotary shaft 23 be respectively positioned on
The top of 21 corresponding position of cross bar, while being located at the lower section of eccentric lever 22, this structure type, 231 chain 232 of sprocket wheel can take off
From cross bar 21, not excessive connection relationship between the two, processing installation is more convenient, and sprocket wheel 231 and chain 232 it
Between transmission it is more steady.And in another structure type, two sprocket wheels 231 are all set at cross bar 21, on cross bar 21
It opens up there are two groove 212, two grooves 212 and two sprocket wheels 231 correspond, and sprocket wheel 231 is located at groove corresponding with its
In 212, and there is gap between the axis direction sprocket wheel 231 of rotary shaft 23 and the inner wall of groove 212, and the then edge of chain 232
The outer surface of cross bar 21 is arranged.For this structure type, corresponding structure is set on cross bar 21 to install 231 chain of sprocket wheel
232,231 chain 232 of sprocket wheel is embedded on cross bar 21, but the two will not generate interference, i.e. 231 chain 232 of sprocket wheel can be around
Cross bar 21 is steadily driven.For generalling use spline and being attached between sprocket wheel 231 and corresponding rotary shaft 23, the two is coaxial,
After cross bar 21 drives rotary shaft 23 to rotate, which can drive corresponding 231 synchronous rotary of sprocket wheel.
Referring to Fig. 3 and Fig. 4, rotary shaft 23 and the driving structure between its corresponding pushing part 24 are refined, it can be by
Different embodiments, such as the end of each rotary shaft 23 are connected between its corresponding pushing part 24 by circlip.This
In embodiment, two rotary shafts 23 will not generate movement, and cross bar 21 and two pushing parts 24 will not then generate rotation, work as bias
It, between the two can be with due to passing through circlip connection between cross bar 21 and rotary shaft 23 after 22 rotation forces cross bar 21 of lever is mobile
Relative movement is generated, then cross bar 21 drives rotary shaft 23 to rotate around own axes, similarly since pushing part 24 will not rotate, works as rotation
Shaft 23 rotates, and the pushing part 24 connecting with its circlip can then be moved along the axis direction of rotary shaft 23.In this configuration, may be used
Position limiting structure is provided in rotary shaft 23, there is part-structure to be located in the position limiting structure of corresponding rotary shaft 23 for pushing part 24,
When rotary shaft 23 drives pushing part 24 mobile, the part-structure of pushing part 24 is limited in the position limiting structure and moves, so as to
To limit the whole displacement in pushing part 24.
Referring to Fig. 5 and Fig. 6, in another embodiment, each rotary shaft 23, which all has towards pushing part 24, to be arranged
Threaded hole 233, which is threaded with the screw rod 25 connecting with pushing part 24.In the present embodiment, bottom cover 12 is located at
The side of pushing part 24, screw rod 25 will not rotate, and after cross bar 21 is mobile, and rotary shaft 23 is driven to rotate, rotary shaft 23 is then driven
Corresponding screw rod 25 is moved along axis, and then drives pushing part 24 mobile by screw rod 25.Optimize the embodiment, pushing part
Card slot 241 is provided on 24, the end that screw rod 25 is connected at pushing part 24 is provided with flange 251, and each flange 251, which blocks, to be set
In in corresponding card slot 241, screw rod 25 is also connected to the outer surface of pushing part 24, so that pushing part 24 has part
Structure is located between corresponding screw rod 25, i.e., clamping is formed between screw rod 25 and corresponding pushing part 24, when screw rod 25 is mobile
When, 24 synchronizing moving of pushing part can be driven.
Referring to fig. 2, Fig. 6 and Fig. 7 continues to optimize above-mentioned two embodiment, is additionally provided with bottom cover in caliper body 1
12, bottom cover 12 is fixed on caliper body 1, and rotary shaft 23 may pass through the bottom cover 12, and bottom cover 12 will not influence rotary shaft 23
Rotation, and bottom cover 12 is located at the side of pushing part 24, and elastic component 26, elastic component 26 are also had additional between bottom cover 12 and cross bar 21
Along the axial direction setting of rotary shaft 23, compressed spring etc. is generallyd use for the elastic component 26.In the present embodiment, when cross bar 21 is to pushing away
When dynamic 24 side of portion movement, the compensation adjustment to friction plate gap can be formed, and in this process, cross bar 21 is to elastic component
26 generate active force, so that elastic component 26 compresses, and when releasing the external force of eccentric lever 22, then in the elastic force of the elastic component 26
Under effect, cross bar 21 and two equal self-returns in pushing part 24 are very convenient.
Referring to Fig. 1, Fig. 6 and Fig. 7, further, support cylinder 27 is had additional between eccentric lever 22 and cross bar 21, and
It is connected between eccentric lever 22 and the inner wall of caliper body 1 by bearing.In the present embodiment, support cylinder 27 is set to cross bar 21
On, then eccentric lever 22 is set on support cylinder 27, by supporting cylinder 27 that can form cross bar 21 and eccentric lever
22 connection relationship facilitates the installation to be formed to eccentric lever 22, by the rotation of eccentric lever 22 to drive support cylinder 27
Movement, and then push cross bar 21 mobile by support cylinder 27, need to rotate additionally, due to eccentric lever 22, then in eccentric lever
Bearing (not shown) is set between 22 1 inner wall of outer surface and caliper body, and the inner wall of caliper body 1 will not influence eccentric lever
22 rotation can be ball bearing or sliding bearing for bearing.Generally, it is arranged on the periphery of eccentric lever 22
There is driving lever 221, which is extended outward by the periphery of eccentric lever 22, and edge extends perpendicularly to eccentric lever
22 axial direction.In the present embodiment, external force is directly acted on driving lever 221, and then drives eccentric lever 22 around axis by driving lever 221
Rotation can drive eccentric lever 22 to act by driving lever 221 in favor of external force.
Referring to Fig. 1, Fig. 2 and Fig. 7, the embodiment of the present invention also provide a kind of air-pressure disc brake, including friction plate with
And above-mentioned adjustment device, friction plate is set in caliper body 1 and two pushing parts 24 of face.It, will be above-mentioned in the present embodiment
It adjusts device to be applied on brake, the surface of two 24 face friction plates of pushing part is in the same plane, when friction plate
When gap needs to adjust, active force can be generated at the driving lever 221 of eccentric lever 22, eccentric lever 22 is driven to rotate, and then passed through
Cross bar 21 and rotary shaft 23 are to drive two pushing parts 24 to push the friction plate with its face, due to adopting between two rotary shafts 23
It being sequentially connected with 231 chain 232 of sprocket wheel, then two 24 synchronizing movings of pushing part, the active force that the two generates friction plate is identical,
It can be so that the adjustment of friction plate gap be more balanced.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of brake clearance adjusts device, including the caliper body with chamber and it is set to the indoor adjusting machine of the chamber
Structure, the regulating mechanism include tool there are two the cross bar of through-hole and the cross bar can be pushed along perpendicular to its rotation axis direction
Mobile eccentric lever, each through-hole is equipped with the rotary shaft being threadedly coupled with it, between two rotary shafts are parallel
Every setting, and its rotation axis is perpendicular to the rotation axis of the eccentric lever, the wherein an end portion of each rotary shaft
Be provided with and the pushing part that moves along its axis pushed by it, it is characterised in that: be equipped in two rotary shafts perpendicular to
At least one axial sprocket wheel is corresponded to two-by-two between each sprocket wheel in two rotary shafts, and described in corresponding two
It is connected by chain drive between sprocket wheel, each sprocket wheel is close to the corresponding rotary shaft along axial interposition
Set, each rotary shaft all have towards the pushing part be arranged threaded hole, the threaded hole be threaded with it is described
The screw rod of pushing part connection, card slot is provided on the pushing part, and the screw rod is connected to the setting of the end at the pushing part
There is flange, each flange is arranged in the corresponding card slot, and the screw rod is also connected to the pushing part
Outer surface.
2. brake clearance as described in claim 1 adjusts device, it is characterised in that: along each institute of the axial direction of two rotary shafts
It states sprocket wheel and is respectively positioned on top with the cross bar corresponding position, and be located at the lower section of the eccentric lever.
3. brake clearance as described in claim 1 adjusts device, it is characterised in that: offered on the cross bar and two institutes
One-to-one two grooves of sprocket wheel are stated, the sprocket wheel is located in the groove with it, and with the groove along axial inner wall
Between there is gap, the chain is arranged along the cross bar outer surface.
4. brake clearance as described in claim 1 adjusts device, it is characterised in that: the end of each rotary shaft with and
It is connected between its corresponding described pushing part by circlip.
5. brake clearance as described in claim 1 adjusts device, it is characterised in that: further include being fixed on the caliper body
Bottom cover, be folded with elastic component between the bottom cover and the cross bar, axial direction setting of the elastic component along the rotary shaft.
6. brake clearance as described in claim 1 adjusts device, it is characterised in that: the eccentric lever and the cross
Support cylinder is had additional between bar, is connected between the eccentric lever and the caliper body inner wall by bearing.
7. brake clearance as described in claim 1 adjusts device, it is characterised in that: each sprocket wheel with it is corresponding described
It is connected between rotary shaft by spline.
8. brake clearance as described in claim 1 adjusts device, it is characterised in that: two pushing parts pass through connecting plate
Connection is integral, and is integrally formed.
9. a kind of air-pressure disc brake, including friction plate, it is characterised in that: further include as described in claim any one of 1-8
Brake clearance adjust device, the friction plate is set in the caliper body and two pushing parts of face.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510973543.6A CN105465248B (en) | 2015-12-22 | 2015-12-22 | Brake clearance adjusts device and air-pressure disc brake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510973543.6A CN105465248B (en) | 2015-12-22 | 2015-12-22 | Brake clearance adjusts device and air-pressure disc brake |
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Publication Number | Publication Date |
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CN105465248A CN105465248A (en) | 2016-04-06 |
CN105465248B true CN105465248B (en) | 2019-03-19 |
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CN201510973543.6A Active CN105465248B (en) | 2015-12-22 | 2015-12-22 | Brake clearance adjusts device and air-pressure disc brake |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111927907B (en) * | 2020-09-14 | 2020-12-29 | 宁波合力制动***有限公司 | Wear compensation mechanism for friction auxiliary block of brake |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1326057A (en) * | 2000-05-31 | 2001-12-12 | 哈尔德克斯制动产品股份公司 | Disk brake including braking mechanism |
WO2015107135A1 (en) * | 2014-01-20 | 2015-07-23 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Sensor device and disk brake having a sensor device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5457723B2 (en) * | 2009-05-28 | 2014-04-02 | 日清紡ブレーキ株式会社 | Drum brake device with automatic shoe clearance adjustment device |
DE102011119768A1 (en) * | 2011-11-30 | 2013-06-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Function unit for adjusting a brake pad of a disc brake |
EP2754912B1 (en) * | 2012-12-19 | 2018-03-21 | Meritor Heavy Vehicle Braking Systems (UK) Limited | A vehicle brake assembly |
CN203627616U (en) * | 2013-11-27 | 2014-06-04 | 湖北丹江口志成铸造有限公司 | Gap self-adjusting mechanism of disc brake |
CN204677656U (en) * | 2015-03-18 | 2015-09-30 | 武汉元丰汽车零部件有限公司 | Promote the structure of air-pressure disc brake clearance adjustment mechanism mechanical efficiency |
CN205446492U (en) * | 2015-12-22 | 2016-08-10 | 武汉元丰汽车零部件有限公司 | Stopper clearance adjustment device and atmospheric pressure disc brake |
-
2015
- 2015-12-22 CN CN201510973543.6A patent/CN105465248B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1326057A (en) * | 2000-05-31 | 2001-12-12 | 哈尔德克斯制动产品股份公司 | Disk brake including braking mechanism |
WO2015107135A1 (en) * | 2014-01-20 | 2015-07-23 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Sensor device and disk brake having a sensor device |
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