CN113074200A - Wear compensation mechanism of brake device, brake device and vehicle - Google Patents
Wear compensation mechanism of brake device, brake device and vehicle Download PDFInfo
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- CN113074200A CN113074200A CN202110461639.XA CN202110461639A CN113074200A CN 113074200 A CN113074200 A CN 113074200A CN 202110461639 A CN202110461639 A CN 202110461639A CN 113074200 A CN113074200 A CN 113074200A
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- brake
- braking
- adjusting mechanism
- groove
- adjusting
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- 230000007246 mechanism Effects 0.000 title claims abstract description 256
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 230000003044 adaptive effect Effects 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 15
- 238000005299 abrasion Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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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
- F16D65/60—Slack adjusters mechanical self-acting in one direction for adjusting excessive play for angular adjustment of two concentric parts of the brake control systems
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
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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
- F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
- F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
- F16D65/562—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake arranged between service brake actuator and braking member, and subjected to service brake force
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a wear compensation mechanism of a braking device, which comprises an adjusting mechanism, a sliding seat and a sliding groove, wherein the adjusting mechanism is connected with a braking transmission mechanism of the braking device and can drive the braking transmission mechanism to rotate along a braking direction or a resetting direction; the sliding seat is arranged corresponding to the adjusting mechanism and used for limiting the swinging range of the adjusting mechanism; the sliding seat is installed in the sliding groove, the sliding groove is used for limiting the sliding seat to move towards the reset direction, and the adjusting mechanism can drive the sliding seat to move towards the braking direction in the sliding groove. Meanwhile, the invention also provides a vehicle which comprises a braking device applying the wear compensation mechanism of the braking device. Compared with the prior art, the wear compensation mechanism of the braking device, the braking device and the vehicle can realize the compensation of the brake clearance, ensure the braking effect and reduce the potential safety hazard.
Description
Technical Field
The invention relates to the technical field of vehicle braking, in particular to a wear compensation mechanism of a braking device, the braking device and a vehicle.
Background
The braking device is an operation for stopping or reducing the speed of a running vehicle, another vehicle, a machine, or the like, or an operation for keeping a stopped vehicle still. The structure and performance of the brake device are directly related to the safety of vehicles and personnel, so that the brake device is regarded as an important safety part of the vehicle and is generally regarded as important.
The braking device in the prior art generally comprises a brake and a brake ring, a gap exists between the brake and the brake ring under normal conditions, and when a vehicle needs to be braked, the brake is driven to move through the rotation of a brake transmission mechanism, so that the brake and the brake ring are mutually attached and rubbed, and braking force is generated. After the braking device is used for a period of time, a brake or a brake ring is abraded, so that a brake gap is formed.
However, the rotation angle of the brake transmission mechanism in the prior art is limited, the brake transmission mechanism can return to the original angle after the driving is finished, so that the brake transmission mechanism can always rotate within the specified angle range, the effective braking eccentric amount is fixed, and for the worn brake and the worn brake ring, the rotation angle can not be further increased, so that the brake can not further expand outwards by a larger distance to compensate the brake clearance, and the worn brake device can not well brake the vehicle, thereby having potential safety hazards. And after the braking device is used for a period of time, the brake cable has the problem of looseness, and the braking stroke can be influenced, so that the braking effect on the vehicle is influenced.
Meanwhile, when the brake device of the vehicle is worn, the brake device is replaced manually in the prior art, complex disassembly and assembly of parts are needed, and the replacement frequency is high. When the braking devices of the shared bicycle, the electric vehicle, the take-away vehicle and the like have serious abrasion problems, the vehicle needs to be found first, then the braking devices are maintained, then the vehicle is put on the market, and the labor cost is too high.
Disclosure of Invention
The brake device aims at the technical problems that after the brake device in the prior art is abraded, a brake gap can be formed, or a brake cable is loosened, so that a vehicle cannot be well braked, and potential safety hazards exist. The invention provides a wear compensation mechanism of a braking device, which can compensate a brake clearance and ensure the braking effect of the braking device so as to reduce potential safety hazards.
A wear compensation mechanism for a brake device, comprising:
the adjusting mechanism is connected with the braking transmission mechanism of the braking device and can drive the braking transmission mechanism to rotate along the braking direction or the resetting direction;
the sliding seat is arranged corresponding to the adjusting mechanism and used for limiting the swinging range of the adjusting mechanism;
the sliding seat is installed in the sliding groove, the sliding groove is used for limiting the sliding seat to move towards the reset direction, and the adjusting mechanism can drive the sliding seat to move towards the braking direction in the sliding groove.
Preferably, the chute comprises:
a tank body;
the clamping grooves are arranged in the groove body and are sequentially arranged at intervals along the braking direction;
at least part of the sliding seat is clamped in one clamping groove, and the adjusting mechanism can drive the sliding seat to slide into another adjacent clamping groove towards the braking direction.
Preferably, the card slot includes:
a bottom surface;
a first side surface connected to one side of the bottom surface;
a second side surface connected to the other side of the bottom surface;
the first side surface is located on one side close to the braking direction, and the first side surface is an inclined surface.
Preferably, the slider includes:
a seat body installed in the tank body;
the two limiting columns are arranged on the seat body and spaced from each other to form a limiting space, and at least part of the adjusting mechanism is positioned in the limiting space;
the elastic piece is arranged on the base body and is partially clamped in the clamping groove.
Preferably, the housing comprises:
a body portion;
the mounting groove is formed in the body part;
the elastic member includes:
a main body part mounted on the mounting groove;
and one end of the elastic part is connected with the main body part, and the other end of the elastic part is clamped in the clamping groove.
Preferably, the clamping grooves are formed in two sides of the groove body, and the elastic parts are correspondingly arranged on the clamping grooves in each side.
Preferably, the base further comprises:
and the avoiding groove is formed by sinking towards the direction away from the clamping groove from one side of the body part close to the clamping groove, and the avoiding groove is arranged corresponding to the elastic part.
A braking device, comprising:
a housing;
the brake ring is arranged on the wheel;
the brake is movably arranged on the shell and is arranged corresponding to the brake ring;
the brake transmission mechanism is movably arranged on the shell, corresponds to the brake and is used for driving the brake to be attached to the brake ring;
a wear compensation mechanism for a brake apparatus as claimed in any one of the preceding claims;
and the driving mechanism is connected with the adjusting mechanism and used for driving the adjusting mechanism to swing.
Preferably, the drive mechanism includes:
a drive plate hinged to the housing;
the brake cable is connected with the driving plate;
and one end of the self-adaptive adjusting mechanism is hinged with the driving plate, the other end of the self-adaptive adjusting mechanism is hinged with the adjusting mechanism, and the distance between the two ends can be adjusted according to the position of the sliding seat.
Preferably, the braking device further includes:
the reset piece is arranged on the shell and connected with the driving plate.
Preferably, the adaptive adjustment mechanism includes:
the connecting piece is hinged with the driving plate or the adjusting mechanism;
one end of the adjusting screw rod is correspondingly hinged with the adjusting mechanism or the driving plate, and the other end of the adjusting screw rod is inserted into the connecting piece;
the adjusting nut is in threaded connection with the adjusting screw rod and is positioned in the connecting piece, and the connecting piece is used for blocking the adjusting nut;
and the pushing and rotating piece is fixedly arranged on the connecting piece and used for driving the adjusting nut to move towards one side close to the adjusting mechanism.
Preferably, a sliding groove or a protruding block is formed in one side, close to the pushing and rotating piece, of the adjusting nut, the pushing and rotating piece is correspondingly provided with the protruding block or the sliding groove, the sliding groove comprises a bottom surface and a guide inclined surface connected with the bottom surface, the protruding block is arranged corresponding to the guide inclined surface, and the protruding block can slide on the guide inclined surface to enable the adjusting nut to rotate.
Preferably, the protruding blocks are sequentially arranged at intervals along the circumferential direction, and each protruding block is at least correspondingly provided with one sliding groove.
A vehicle comprising a braking device as claimed in any one of the preceding claims.
Compared with the prior art, the adjusting mechanism in the wear compensation mechanism of the braking device provided by the invention is connected with the braking transmission mechanism of the braking device and can drive the braking transmission mechanism to rotate along the braking direction or the resetting direction; the sliding seat is arranged corresponding to the adjusting mechanism and used for limiting the swinging range of the adjusting mechanism; the sliding seat is installed in the sliding groove, the sliding groove is used for limiting the sliding seat to move towards the reset direction, and the adjusting mechanism can drive the sliding groove to move towards the braking direction in the sliding groove. During normal braking operation, the brake driving is realized by applying force to the adjusting mechanism so as to drive the brake transmission mechanism to rotate; when the brake device is worn and applies force to the adjusting mechanism, the movement stroke of the adjusting mechanism is increased, so that the adjusting mechanism is in contact with the sliding seat, and the sliding seat is driven to move in the sliding groove; after the force is applied, the position of the whole sliding seat in the sliding groove moves, and the sliding seat is limited by the sliding groove and cannot be reset, so that the adjusting mechanism cannot be reset to the initial position due to the blocking of the sliding seat when being reset towards the resetting direction, and the braking transmission mechanism cannot be reset to the original angle, so that the braking transmission mechanism obtains a deflection angle in the initial state, and the compensation of the abrasion loss is realized; when the brake mechanism is in the initial state, the brake transmission mechanism obtains a deflection angle, so that the brake transmission mechanism can be rotated to a larger angle after the force is applied to the adjusting mechanism, the compensation of a brake gap is realized, the brake effect is ensured, and the potential safety hazard is reduced. Meanwhile, an initial deflection angle can be provided for the brake transmission mechanism, so that when the brake cable has a loosening problem, the brake stroke of the brake cable can be compensated, and the brake cable can brake the vehicle by only needing less strokes.
Correspondingly, the braking device provided by the invention can effectively compensate the brake clearance after abrasion by adopting the abrasion compensation mechanism of the braking device, thereby effectively ensuring the braking effect and reducing the potential safety hazard.
Correspondingly, the vehicle provided by the invention can effectively guarantee the braking effect and reduce the potential safety hazard by adopting the braking device.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a braking device according to an embodiment;
FIG. 2 is a schematic structural view of the sliding slot and the sliding base shown in FIG. 1;
FIG. 3 is a schematic view of an angular plan view of the brake apparatus of FIG. 1;
FIG. 4 is an exploded view of the brake apparatus shown in FIG. 1;
FIG. 5 is a schematic plan view of the braking device shown in FIG. 1 in an unbraked state;
FIG. 6 is a schematic plan view of the braking device shown in FIG. 1 in a braking state;
FIG. 7 is a schematic perspective view of the adjusting screw, the adjusting nut and the pushing and rotating member shown in FIG. 3;
FIG. 8 is a perspective view of the pusher of FIG. 7;
FIG. 9 is a perspective view of the adjustment nut of FIG. 7;
FIG. 10 is a schematic plan view of the housing of FIG. 3;
fig. 11 is a perspective view illustrating a structure of the driving plate shown in fig. 3.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
The invention provides a wear compensation mechanism of a braking device, which comprises an adjusting mechanism, a sliding seat and a sliding groove, wherein the adjusting mechanism is connected with a braking transmission mechanism of the braking device and can drive the braking transmission mechanism to rotate along a braking direction or a resetting direction; the sliding seat is arranged corresponding to the adjusting mechanism and used for limiting the swinging range of the adjusting mechanism; the sliding seat is installed in the sliding groove, the sliding groove is used for limiting the sliding seat to move towards the reset direction, and the adjusting mechanism can drive the sliding seat to move towards the braking direction in the sliding groove. The abrasion compensation mechanism of the braking device can realize the compensation of the brake clearance, ensure the braking effect and reduce the potential safety hazard.
Example one
Please refer to fig. 1 and fig. 2 in combination. The embodiment provides a wear compensation mechanism 10 of a braking device, which is used for compensating a brake clearance after the brake and/or a brake ring of the braking device are worn to generate the brake clearance, so that the brake and the brake ring can be attached to each other, and the braking effect is guaranteed. Specifically, the wear compensation mechanism 10 of the braking device is used for angle compensation of a braking transmission mechanism for driving the brake to expand outwards, and after the braking device is worn, the wear compensation mechanism 10 of the braking device can compensate an initial deflection angle for the braking transmission mechanism, so that the braking transmission mechanism can rotate to a larger angle, and the brake can further expand outwards to a larger distance to compensate for a brake gap.
The wear compensation mechanism 10 of the braking device comprises an adjusting mechanism 11, a sliding seat 12 and a sliding groove 13, wherein the adjusting mechanism 11 is connected with a braking transmission mechanism 20 of the braking device and can drive the braking transmission mechanism 20 to rotate along a braking direction or a resetting direction. The braking direction refers to a direction in which when the brake actuator 20 is rotated, the brake in the brake device is caused to expand outward. The reset direction is the direction opposite to the braking direction, and specifically, when the brake actuator 20 rotates in this direction, the brake in the brake device is forced to contract inward. In this embodiment, the braking direction is clockwise in fig. 5, and the resetting direction is counterclockwise in fig. 5.
The slide 12 is disposed corresponding to the adjusting mechanism 11, and is used for limiting a swing range of the adjusting mechanism 11. That is, the carriage 12 is arranged at least in some areas in a position coinciding with the adjustment mechanism 11, the carriage 12 being partially inserted into the adjustment mechanism 11 or the adjustment mechanism 11 being partially inserted into the carriage 12. Therefore, the sliding seat 12 can limit and block the adjusting mechanism 11, so that the relative position of the adjusting mechanism 11 and the sliding seat 12 is always within a range, the adjusting mechanism 11 can only swing within a certain range in the sliding seat 12, or the sliding seat 12 can only move within a certain range in the adjusting mechanism 11.
The sliding seat 12 is installed in the sliding groove 13, the sliding groove 13 is used for limiting the sliding seat 12 to move towards the reset direction, and the adjusting mechanism 11 can drive the sliding seat 12 to move towards the braking direction in the sliding groove 13. The movement toward the reset direction means the movement along the reset direction or the movement toward the reset direction, and the movement toward the braking direction means the movement along the braking direction or the movement toward the braking direction.
Therefore, when the braking device is normal, external force is applied to enable the adjusting mechanism 11 to swing around the braking transmission mechanism 20 as a center, so that the braking transmission mechanism 20 is driven to rotate, the braking transmission mechanism 20 drives the brake in the braking device to expand outwards, the brake and the brake ring are in contact friction, and braking is achieved. At this time, the swing range of the adjusting mechanism 11 is limited in the sliding seat 12, the adjusting mechanism 11 does not contact with the sliding seat 12, or the sliding seat 12 cannot move in the sliding groove 13 due to the slight contact between the adjusting mechanism 11 and the sliding seat 12.
When a brake or a brake ring in the braking device is worn to form a brake gap, and a force is applied, the brake and the brake ring are not in contact, so that resistance cannot be generated, the movement stroke of the adjusting mechanism 11 can be increased, the adjusting mechanism 11 can swing to a larger extent along the braking direction, the adjusting mechanism 11 is in contact with the sliding seat 12 and generates driving force for the sliding seat 12, and the sliding seat 12 is urged to move towards the braking direction in the sliding groove 13. When the adjusting mechanism 11 is reset, because the sliding base 12 is restricted by the sliding groove 13 and cannot return to the initial position in the resetting direction, the sliding base 12 blocks the adjusting mechanism 11, so that the adjusting mechanism 11 cannot return to the initial position, and further the braking transmission mechanism 20 cannot return to the original angle, so that the braking transmission mechanism 20 obtains an initial deflection angle in the initial state. Therefore, during the next braking action, because the braking transmission mechanism 20 obtains a deflection angle in the initial state, after the force is applied to the adjusting mechanism 11, the braking transmission mechanism 20 can be rotated to a larger angle, the compensation of the braking clearance is realized, the braking effect is ensured, and the potential safety hazard is reduced. Meanwhile, an initial deflection angle can be provided for the brake transmission mechanism 20, so that when the brake cable has a loosening problem, the brake travel of the brake cable can be compensated, and the brake cable can brake the vehicle by only needing less travel. For example, in a normal situation, the brake cable needs 5 strokes to realize braking, and after the brake cable is loosened, the brake cable needs to be pulled for 6 strokes to complete braking. In the wear compensation mechanism 10 of the braking device provided in this embodiment, since the initial deflection angle of the braking transmission mechanism 20 can be compensated, even if the brake cable is loosened, the required rotation angle of the braking transmission mechanism 20 is reduced, so that the stroke required by the brake cable to complete braking is also reduced, and the loosened brake cable can complete braking only by pulling 5 strokes. Namely, the initial deflection angle of the brake transmission mechanism 20 is compensated, the compensation of the brake line stroke can be completed, and the brake effect of the vehicle is guaranteed.
That is, the sliding groove 13 is a one-way sliding groove, the sliding seat 12 is forced to move only toward one side of the braking direction in the sliding groove 13, and cannot move to the reset direction, so that the sliding seat 12 blocks the adjusting mechanism 11, and the braking transmission mechanism 20 is urged to obtain an initial deflection angle to compensate the abrasion loss.
In the present exemplary embodiment, the brake gear mechanism 20 is embodied as a camshaft. The sliding groove 13 is arc-shaped, so that the deflection of the adjusting mechanism 11 can be better matched. Of course, in other embodiments, the sliding groove 13 may have other shapes, and even the sliding groove 13 may be linear, that is, the sliding seat 12 only needs to be limited by the sliding groove 13, so that the sliding seat 12 can only move in one direction, and then the deflection angle compensation of the brake transmission mechanism 20 is realized.
Preferably, the sliding groove 13 includes a groove body 131 and a plurality of engaging grooves 132, and the engaging grooves 132 are disposed in the groove body 131, and a plurality of the engaging grooves 132 are sequentially disposed at intervals in the braking direction. The slide carriage 12 is at least partially engaged in one of the engaging slots 132, and the adjusting mechanism 11 can drive the slide carriage 12 to slide into another adjacent engaging slot 132 toward the braking direction. Namely, the locking slot 132 is used to block and limit the slide carriage 12, and block the slide carriage 12 from moving toward the reset direction. It will be appreciated that in this embodiment, by providing a plurality of successively spaced pockets 132, wear can be compensated for in steps until the carriage 12 slides into the last pocket 132. Through the mode of gradual compensation, can be more accurate, better compensate the wearing and tearing volume, also can avoid the compensation volume too much to lead to the too sensitive problem that influences the vehicle and normally travel of braking. It should be noted that, in the present embodiment, the card slot 132 is disposed in the slot body 131. Of course, in other embodiments, the clamping groove 132 may also be disposed outside the groove body 131, that is, only the groove body 131 needs to be disposed to guide the sliding seat 12, and the sliding seat 12 is limited by the clamping groove 132. In this embodiment, the slot 132 is disposed in the slot body 131, so that the slider 12 can be conveniently disposed, the structure of the slider 12 is simpler, and the processing and manufacturing are facilitated.
Preferably, the card slot 132 includes a bottom surface 1321, a first side surface 1322 and a second side surface 1323, wherein the first side surface 1322 is connected to one side of the bottom surface 1321, and the second side surface 1323 is connected to the other side of the bottom surface 1321. The first side surface 1322 is located at a side close to the braking direction, and the first side surface 1322 is an inclined surface. That is, the first side surface 1322 is disposed obliquely with respect to the bottom surface 1321, so that when the slide 12 is subjected to a force in the braking direction, the first side surface 1322 can guide the portion of the slide 12 located in the slot 132, so that the portion of the slide 12 located in the slot 132 can more easily enter the next adjacent slot 132. That is, by providing the first side 1322 as an inclined surface, the movement of the sliding base 12 in the sliding groove 13 is facilitated, and the force required for driving the sliding base 12 to move is reduced, so that the amount of wear can be more easily compensated.
Preferably, the sliding seat 12 includes a seat body 121, a limiting post 122 and an elastic member 123, the seat body 121 is installed in the groove body 131, the limiting post 122 is disposed on the seat body 121, and the elastic member 123 is installed on the seat body 121 and is partially clamped in the clamping groove 132. The number of the limiting columns 122 is two, the two limiting columns 122 are spaced from each other to form a limiting space 124, and the adjusting mechanism 11 is at least partially located in the limiting space 124. That is, after the slider 12 is stressed, the elastic member 123 is caused to deform, so that the elastic member 123 slides out of the slot 132 and slides into another adjacent slot 132 in the braking direction. The two limiting columns 122 limit the adjusting mechanism 11 in the limiting space 124, and when the swing amplitude of the adjusting mechanism 11 is increased, the adjusting mechanism is blocked by the limiting columns 122, so that the position of the adjusting mechanism 11 is limited, or the adjusting mechanism 11 drives the sliding base 12 to move. It should be noted that, in the present embodiment, by providing the limiting columns 122 on both sides, the adjusting mechanism 11 is partially inserted into the limiting space 124, so as to limit the swing position of the adjusting mechanism 11 by the sliding base 12. Of course, in other embodiments, the limiting space 124 may also be disposed on the adjusting mechanism 11, specifically, a corresponding sliding groove may be formed on the adjusting mechanism 11, and correspondingly, the sliding seat 12 may be disposed with a limiting post inserted into the sliding groove, so that the limiting post is blocked by the side walls on two sides of the sliding groove after sliding in the sliding groove for a certain distance, thereby further limiting the swing amplitude of the adjusting mechanism 11. That is, only a corresponding limit structure needs to be arranged between the adjusting mechanism 11 and the sliding seat 12 to limit the swing range of the adjusting mechanism 11 relative to the sliding seat 12, so that the sliding seat 12 is driven to move towards the braking direction and the adjusting mechanism 11 is limited to reset along the resetting direction through the contact between the adjusting mechanism 11 and the sliding seat 12. Preferably, the elastic member 123 is a metal elastic sheet, so that the elastic sheet is not easily damaged. Preferably, one end of the adjusting mechanism 11 is inserted into the limiting space 124 and extends out of the limiting space 124, so that the sliding seat 12 can be blocked by the adjusting mechanism 11, and the sliding seat 12 is prevented from being accidentally removed from the sliding groove 13.
Preferably, the housing 121 includes a body 1211 and a mounting groove 1212 formed on the body 1211. The elastic member 123 includes a main body 1231 installed in the mounting groove 1212, and an elastic portion 1232 having one end connected to the main body 1231 and the other end engaged with the locking groove 132. By installing the main body 1231 in the installation groove 1212, the installation stability can be ensured, and the elastic member 123 can be prevented from being accidentally disengaged.
Preferably, the clamping grooves 132 are formed on both sides of the groove body 131, and the elastic portions 1232 are correspondingly disposed on the clamping grooves 132 on each side. That is, the two side walls of the groove body 131 are both provided with the locking grooves 132, the elastic portions 1232 are provided with at least two, and each of the elastic portions 1232 corresponds to one of the locking grooves 132. Through all setting up in both sides draw-in groove 132, and every side draw-in groove 132 all is provided with elasticity portion 1232, thereby make slide 12 card is located during in the spout 13, the more equilibrium of atress avoids one-way atress to take place unexpected pop out or drop, the effectual stability that has ensured.
Preferably, the seat body 121 further includes an avoiding groove 1213, the avoiding groove 1213 is formed by being recessed from a side of the body 1211 close to the slot 132 toward a direction away from the slot 132, and the avoiding groove 1213 is disposed corresponding to the elastic portion 1232. Therefore, when the elastic part 1232 is stressed to bend inwards, the avoiding groove 1213 can provide a good deformation space for the elastic part 1232, so that the sliding seat 12 can move towards the braking direction more conveniently and more easily.
Example two
Please refer to fig. 1 to 11. This embodiment provides a brake equipment 100, and it includes shell 30, braking circle 40, brake 50, braking drive mechanism 20, brake equipment's wear compensation mechanism and actuating mechanism 60, braking circle 40 is installed on the wheel of vehicle, brake 50 movable mounting in on the shell 30, and correspond braking circle 40 sets up, and is concrete, brake 50 set up in braking circle 40, braking drive mechanism 20 movable mounting in on the shell 30 and correspond brake 50 sets up and is used for the drive brake 50 with braking circle 40 laminates. Wherein, the wear compensation mechanism of the braking device adopts the wear compensation mechanism 10 of the braking device in the first embodiment. The driving mechanism 60 is connected to the adjusting mechanism 11 for driving the adjusting mechanism 11 to swing. The brake 50 may be a drum brake, an expansion brake, a servo brake, or the like.
Specifically, the brake 50 includes two oppositely disposed brake shoes 51, the brake 50 and the brake ring 40 are located on one side of the housing 30, and the wear compensation mechanism 10 and the driving mechanism 60 of the braking device are mounted on the other side of the housing 30. The brake transmission mechanism 20 is movably mounted on the housing 30 and inserted between the two brake shoes 51, wherein the movable mounting of the brake transmission mechanism 20 on the housing 30 means that the brake transmission mechanism 20 can rotate on the housing 30 after being stressed. In the normal condition, two the outward flange of brake shoe 51 with the mutual interval of brake circle 40, when needs are brakied, through actuating mechanism 60 to adjustment mechanism 11 application of force, thereby adjustment mechanism 11 drives brake drive mechanism 20 rotates, and then brake drive mechanism 20 will two brake shoe 51 is outside extrudeing, makes brake shoe 51 with brake circle 40 contact friction realizes the braking effect. When the brake shoe 51 and/or the brake ring 40 are worn, the initial deflection angle of the brake actuator 20 is compensated by the wear compensation mechanism 10 of the brake apparatus, so that the wear amount of the brake shoe 51 and/or the brake ring 40 is compensated by providing the brake actuator 20 with an initial deflection angle.
Preferably, the driving mechanism 60 includes a driving plate 61, a brake cable 62 and an adaptive adjusting mechanism 63, the driving plate 61 is hinged to the housing 30, and the brake cable 62 is connected to the driving plate 61. One end of the adaptive adjusting mechanism 63 is connected with the driving plate 61, and the other end is connected with the adjusting mechanism 11, and the distance between the two ends can be adjusted according to the position of the sliding seat 12. Namely, the driving plate 61, the adaptive adjustment mechanism 63 and the adjustment mechanism 11 together form a link structure, and the length of the adaptive adjustment mechanism 63 can be adaptively adjusted according to actual conditions. The adaptive adjustment mechanism 63 can adjust the distance between the two ends according to the position of the sliding seat 12, specifically: according to different positions of the sliding base 12 in the sliding groove 13, the spacing distance between the two hinge points of the adaptive adjusting mechanism 63 can be adaptively adjusted, that is, the length of the adaptive adjusting mechanism 63 itself can be adaptively adjusted. Specifically, in this embodiment, after the adjusting mechanism 11 drives the sliding base 12 to move a certain distance in the sliding groove 13 toward the braking direction, during the resetting, due to the blocking of the sliding base 12 to the adjusting mechanism 11, the adaptive adjusting mechanism 63 performs adaptive adjustment after receiving resistance, so that the distance between two hinge points of the adaptive adjusting mechanism 63 is shortened, that is, the overall length of the adaptive adjusting mechanism 63 is shortened, and thus the adaptive adjusting mechanism 63 does not always apply a large force toward the resetting direction to the adjusting mechanism 63. That is, in the present embodiment, by providing the adaptive adjustment mechanism 63 to transmit power, after the wear compensation mechanism 10 of the braking device performs wear compensation, the adaptive adjusting mechanism 63 can perform self-adjustment according to the resistance fed back by the adjusting mechanism 11, thereby reducing the length of the whole self, slowing or eliminating the force of the self-adaptive adjusting mechanism 63 applied to the adjusting mechanism 11 towards the reset direction, and then slow down or eliminate adjustment mechanism 11 to the slider 12 exerts towards the power of direction that resets, has effectually avoided slider 12 in spout 13 towards the direction that resets the unexpected back slip or drop takes place, further guaranteed arresting gear's wear compensation mechanism 10 is to the compensation effect of braking drive mechanism 20, also ensured arresting gear's wear compensation mechanism 10's stability.
Preferably, the braking device 100 further comprises a reset member 70, and the reset member 70 is disposed on the housing 30 and connected to the driving plate 61. The reset member 70 is used to provide a restoring force to the driving plate 61, so as to drive the adjusting mechanism 11 to move toward the reset direction. In this embodiment, the piece 70 that resets specifically is the reset torsion spring, brake cable 62 is connected with the brake handle on the vehicle, and when the vehicle need brake, through pressing the brake handle drive brake cable 62 is right drive plate 61 pulls, reset 70 atress emergence deformation. After the brake handle is released after braking, the reset member 70 drives the driving plate 61 to return to the original position, and further drives the brake transmission mechanism 20 to return to the original angle. Of course, in other embodiments, the reset element 70 may be disposed at any other desired position, and the reset element 70 may also adopt any other structure or device capable of providing a restoring force, that is, only the restoring force needs to be provided for the braking device 100 through the reset element 70, so that the braking device 100 can be restored to the state after braking is finished. In the embodiment, the reset member 70 is connected to the driving plate 61, so that after the wear compensation mechanism 10 of the brake device performs angle compensation and the adaptive adjustment mechanism 63 performs adaptive adjustment, the reset member 70 does not continuously apply restoring force to the adjustment mechanism 11, thereby ensuring the stability of the wear compensation mechanism 10 of the brake device.
Preferably, the adaptive adjusting mechanism 63 includes a connecting member 631, an adjusting screw 632, an adjusting nut 633 and a pushing and rotating member 634, the connecting member 631 has an accommodating space 637 therein, the connecting member 631 is hinged to the driving plate 61 or the adjusting mechanism 11, and one end of the adjusting screw 632 is hinged to the adjusting mechanism 11 or the driving plate 61, and the other end is at least partially inserted into the accommodating space 637. That is, the connecting member 631 is disposed on either the driving plate 61 or the adjusting mechanism 11, and the adjusting screw 632 is correspondingly disposed on the other. In the present embodiment, the connecting member 631 is disposed on the driving plate 61, and the adjusting screw 632 is disposed on the adjusting mechanism 11. The adjusting nut 633 is screwed on the adjusting screw 632 and located in the accommodating space 637, and the connecting member 631 blocks the adjusting nut 633. The pushing and rotating member 634 is fixed on the connecting member 631 to drive the adjusting nut 633 to rotate. In a normal state, the pushing screw 634 does not contact the adjusting nut 633, so that the position of the adjusting nut 633 on the adjusting screw 632 does not change, and the adjusting nut 633 is blocked by the connecting member 631, so that the distance between the connecting point of the connecting member 631 and the drive plate 61 and the connecting point of the adjusting screw 632 and the adjusting mechanism 11 (the overall length of the adaptive adjusting mechanism 63) does not change. After the wear compensation mechanism 10 of the braking device compensates, because the adjustment mechanism 11 is blocked by the sliding base 12 when returning, the driving plate 61 is driven by the reset member 70 to still move toward the reset direction, so as to drive the connecting member 631 to move toward one side of the adjustment screw 632, so that the other end of the adjustment screw 632 gradually extends into the connecting member 631, the pushing member 634 contacts with the adjustment nut 633 to drive the adjustment nut 633 to rotate, and the adjustment nut 633 moves laterally toward one side close to the adjustment mechanism 11, so as to shorten the overall length of the adaptive adjustment mechanism 63. Finally, the driving plate 61 can return to the initial position under the driving of the reset member 70, and meanwhile, the adaptive adjustment mechanism 63 can also adaptively adjust the length, so as to prevent the sliding base 12 from sliding back or slipping due to the stress.
Preferably, a sliding groove 635 or a protrusion 636 is disposed on one side of the adjusting nut 633 close to the pushing and rotating member 634, and the protrusion 636 or the sliding groove 635 is correspondingly disposed on the pushing and rotating member 634. That is, either one of the adjusting nut 633 and the pushing and rotating member 634 is provided with the projection 636, and the other one is provided with the sliding groove 635. In this embodiment, the sliding groove 635 is disposed on the adjusting nut 633, and the protrusion 636 is disposed on the pushing member 634. The sliding groove 635 comprises a bottom surface 6351 and a guiding inclined surface 6352 connected to the bottom surface 6351, the protrusion 636 is disposed corresponding to the guiding inclined surface 6352, and the protrusion 636 can slide on the guiding inclined surface 6352 to cause the adjusting nut 633 to rotate. That is, when the pushing element 634 contacts the adjusting nut 633, the protrusion 636 contacts with the wall of the sliding groove 635, so that the adjusting nut 633 is rotated by the guiding of the guiding slope 6352, and the adjusting nut 633 is laterally displaced on the adjusting screw 632 and moves toward the side close to the adjusting mechanism 11. Of course, in other embodiments, any other structure may be adopted between the adjusting nut 633 and the pushing and selecting element 634 to drive the adjusting nut 633 to rotate, even the protrusion 636 may be directly disposed on the inner wall of the connecting element 631, and the sliding groove 635 may also be disposed on the side wall of the adjusting nut 633. In this embodiment, the protrusion 636 and the sliding groove 635 are disposed at the end portions, so that the protrusion 636 can be aligned and adapted with the sliding groove 635 better, the processing difficulty is reduced, and the processing is facilitated.
Preferably, the protruding blocks 636 are sequentially arranged at intervals along the circumferential direction, and each protruding block 636 is at least correspondingly provided with one sliding groove 635. In this embodiment, three protrusions 636 are specifically arranged, the number of the sliding grooves 635 is greater than that of the protrusions 636, and the sliding grooves 635 are sequentially arranged at intervals in the circumferential direction. The adjusting nut 633 is pushed by arranging a plurality of bumps 636, so that the force application is more balanced in the driving process, and the adjusting nut 633 cannot deflect. It can be understood that, in order to ensure that the protrusion 636 can smoothly enter the next adjacent sliding groove 635 in the next adjustment process after sliding into the bottom of the sliding groove 635, the positions of the guiding inclined surfaces 6352 corresponding to the three protrusions 636 may be slightly different. Therefore, after one of the protrusions 636 slides into the bottom, in the next adjustment process, the other protrusion 636 may first contact with the guiding inclined surface 6352, and the adjusting nut 633 is rotated to a certain position, so that the protrusion 636 can smoothly slide into the other adjacent sliding groove 635. And corresponding slopes or curved surfaces may be provided at corresponding positions on the protrusions 636 so as to guide the protrusions 636 to slide into the adjacent sliding grooves 635. Specifically, a transition surface 638 between two adjacent sliding grooves 635 is a slope, wherein the transition surface 638 is a surface of the adjusting nut 633 near to the pushing element 634. After the lug 636 slides into the bottom of the sliding groove 635, the transition surface 638 can well guide the lug 636 to slide into the next adjacent sliding groove 635 during the next adjustment process, so as to ensure that the rotating and pushing member 634 can continuously push the adjusting nut 633.
Specifically, the adjusting mechanism 11 includes a first plate 111 and an extending plate 112 connected to an end of the first plate 111, the extending plate 112 is correspondingly inserted into the limiting space 124, one side of the first plate 111, which is far away from the extending plate 112, is connected to the brake transmission mechanism 20, and the adjusting screw 632 is hinged to the middle of the adjusting mechanism 11. The driving plate 61 comprises a second plate body 611 and a brake cable clamping portion 612 arranged on the second plate body 611, the brake cable 62 is clamped on the brake cable clamping portion 612, one end of the second plate body 611 is hinged to the housing 30, and the connecting member 631 is hinged to the middle of the second plate body 611. The housing 30 includes a housing body 31, a first hinge point 32, a second hinge point 33 and a brake cable fixing seat 34, which are disposed on the housing body 31, and in this embodiment, the sliding slot 13 is disposed on the housing body 31. The adjusting mechanism 11 is hinged to the first hinge point 32, the driving plate 61 is hinged to the second hinge point 33, and the brake cable fixing seat 34 is used for fixedly limiting the position of the brake cable 62, so that the transmission of the driving force of the brake cable 62 can be effectively ensured.
It can be understood that, after the brake device 100 provided by this embodiment is worn, only a force needs to be applied to increase the stroke of the brake cable 62, so as to provide a driving force to move the sliding seat 12 in the sliding slot 13, thereby compensating for the wear amount. The brake device 100 can be self-adaptive only by pressing the brake handle without complex disassembly and assembly, so that the abrasion loss of the brake device 100 is compensated, the labor cost is effectively reduced, the maintenance time can be saved, and the vehicle does not need to be found and maintained.
EXAMPLE III
The present embodiment provides a vehicle including the brake device 100 according to the second embodiment. In particular, the vehicle may be an electrically assisted bicycle. Of course, in other embodiments, the braking device 100 may be used in any other desired vehicle.
Compared with the prior art, the adjusting mechanism in the wear compensation mechanism of the braking device provided by the invention is connected with the braking transmission mechanism of the braking device and can drive the braking transmission mechanism to rotate along the braking direction or the resetting direction; the sliding seat is arranged corresponding to the adjusting mechanism and used for limiting the swinging range of the adjusting mechanism; the sliding seat is installed in the sliding groove, the sliding groove is used for limiting the sliding seat to move towards the reset direction, and the adjusting mechanism can drive the sliding groove to move towards the braking direction in the sliding groove. During normal braking operation, the brake driving is realized by applying force to the adjusting mechanism so as to drive the brake transmission mechanism to rotate; when the brake device is worn and applies force to the adjusting mechanism, the movement stroke of the adjusting mechanism is increased, so that the adjusting mechanism is in contact with the sliding seat, and the sliding seat is driven to move in the sliding groove; after the force is applied, the position of the whole sliding seat in the sliding groove moves, and the sliding seat is limited by the sliding groove and cannot be reset, so that the adjusting mechanism cannot be reset to the initial position due to the blocking of the sliding seat when being reset towards the resetting direction, and the braking transmission mechanism cannot be reset to the original angle, so that the braking transmission mechanism obtains a deflection angle in the initial state, and the compensation of the abrasion loss is realized; when the brake mechanism is in the initial state, the brake transmission mechanism obtains a deflection angle, so that the brake transmission mechanism can be rotated to a larger angle after the force is applied to the adjusting mechanism, the compensation of a brake gap is realized, the brake effect is ensured, and the potential safety hazard is reduced. Meanwhile, an initial deflection angle can be provided for the brake transmission mechanism, so that when the brake cable has a loosening problem, the brake stroke can be compensated, and the brake of the vehicle can be realized by the brake cable with less stroke.
Correspondingly, the braking device provided by the invention can effectively compensate the brake clearance after abrasion by adopting the abrasion compensation mechanism of the braking device, thereby effectively ensuring the braking effect and reducing the potential safety hazard.
Correspondingly, the vehicle provided by the invention can effectively guarantee the braking effect and reduce the potential safety hazard by adopting the braking device.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (14)
1. A wear compensation mechanism for a brake device, comprising:
the adjusting mechanism is connected with the braking transmission mechanism of the braking device and can drive the braking transmission mechanism to rotate along the braking direction or the resetting direction;
the sliding seat is arranged corresponding to the adjusting mechanism and used for limiting the swinging range of the adjusting mechanism;
the sliding seat is installed in the sliding groove, the sliding groove is used for limiting the sliding seat to move towards the reset direction, and the adjusting mechanism can drive the sliding seat to move towards the braking direction in the sliding groove.
2. The wear compensation mechanism of a brake device of claim 1, wherein the slide groove comprises:
a tank body;
the clamping grooves are arranged in the groove body and are sequentially arranged in the direction of the braking direction at intervals;
at least part of the sliding seat is clamped in one clamping groove, and the adjusting mechanism can drive the sliding seat to slide into another adjacent clamping groove towards the braking direction.
3. The wear compensation mechanism of a brake device of claim 2, wherein the catch groove comprises:
a bottom surface;
a first side surface connected to one side of the bottom surface;
a second side surface connected to the other side of the bottom surface;
the first side surface is located on one side close to the braking direction, and the first side surface is an inclined surface.
4. A wear-compensating mechanism for a brake apparatus according to claim 2 or 3, wherein the carriage includes:
a seat body installed in the tank body;
the two limiting columns are arranged on the seat body and spaced from each other to form a limiting space, and at least part of the adjusting mechanism is positioned in the limiting space;
the elastic piece is arranged on the base body and is partially clamped in the clamping groove.
5. The wear compensation mechanism of a brake apparatus of claim 4, wherein the seat body comprises:
a body portion;
the mounting groove is formed in the body part;
the elastic member includes:
a main body part mounted on the mounting groove;
and one end of the elastic part is connected with the main body part, and the other end of the elastic part is clamped in the clamping groove.
6. The wear compensation mechanism of claim 5, wherein the locking groove is formed on both sides of the groove body, and the elastic portion is correspondingly formed on the locking groove on each side.
7. The wear compensation mechanism of a brake apparatus of claim 6, wherein the housing further comprises:
and the avoiding groove is formed by sinking towards the direction away from the clamping groove from one side of the body part close to the clamping groove, and the avoiding groove is arranged corresponding to the elastic part.
8. A brake apparatus, comprising:
a housing;
the brake ring is arranged on the wheel;
the brake is movably arranged on the shell and is arranged corresponding to the brake ring;
the brake transmission mechanism is movably arranged on the shell, corresponds to the brake and is used for driving the brake to be attached to the brake ring;
a wear compensation mechanism of a brake device according to any one of claims 1 to 7;
and the driving mechanism is connected with the adjusting mechanism and used for driving the adjusting mechanism to swing.
9. The braking device of claim 8, wherein the drive mechanism comprises:
a drive plate hinged to the housing;
the brake cable is connected with the driving plate;
and one end of the self-adaptive adjusting mechanism is hinged with the driving plate, the other end of the self-adaptive adjusting mechanism is hinged with the adjusting mechanism, and the distance between the two ends can be adjusted according to the position of the sliding seat.
10. The braking apparatus according to claim 9, characterized by further comprising:
the reset piece is arranged on the shell and connected with the driving plate.
11. A braking apparatus in accordance with claim 9 or 10, characterised in that the adaptive adjustment mechanism comprises:
the connecting piece is hinged with the driving plate or the adjusting mechanism and internally provided with an accommodating space;
one end of the adjusting screw is correspondingly hinged with the adjusting mechanism or the driving plate, and the other end of the adjusting screw is at least partially inserted into the accommodating space;
the adjusting nut is in threaded connection with the adjusting screw rod and is positioned in the accommodating space, and the connecting piece is used for blocking the adjusting nut;
and the pushing and rotating piece is fixedly arranged on the connecting piece and used for driving the adjusting nut to move towards one side close to the adjusting mechanism.
12. The brake device according to claim 11, wherein a sliding groove or a protrusion is formed on a side of the adjusting nut close to the rotation pushing member, the rotation pushing member is correspondingly provided with the protrusion or the sliding groove, the sliding groove includes a bottom surface and a guiding inclined surface connected to the bottom surface, the protrusion is arranged corresponding to the guiding inclined surface, and the protrusion can slide on the guiding inclined surface to facilitate the rotation of the adjusting nut.
13. The braking device according to claim 12, wherein a plurality of the protrusions are sequentially arranged at intervals along the circumferential direction, and each protrusion is provided with at least one corresponding sliding groove.
14. A vehicle characterized by comprising a braking device according to any one of claims 8 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110461639.XA CN113074200A (en) | 2021-04-27 | 2021-04-27 | Wear compensation mechanism of brake device, brake device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110461639.XA CN113074200A (en) | 2021-04-27 | 2021-04-27 | Wear compensation mechanism of brake device, brake device and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN113074200A true CN113074200A (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110461639.XA Pending CN113074200A (en) | 2021-04-27 | 2021-04-27 | Wear compensation mechanism of brake device, brake device and vehicle |
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| CN (1) | CN113074200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114623172A (en) * | 2022-05-12 | 2022-06-14 | 深圳三火电子科技有限公司 | Parking brake capable of automatically compensating braking force |
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