CN110966320B - Brake for vehicle and vehicle - Google Patents
Brake for vehicle and vehicle Download PDFInfo
- Publication number
- CN110966320B CN110966320B CN201811162509.0A CN201811162509A CN110966320B CN 110966320 B CN110966320 B CN 110966320B CN 201811162509 A CN201811162509 A CN 201811162509A CN 110966320 B CN110966320 B CN 110966320B
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- Prior art keywords
- friction plate
- brake
- abutting
- screwing
- sliding groove
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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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
- F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
- F16D65/0977—Springs made from sheet metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a brake for a vehicle and the vehicle, the brake includes: the clamp frame is provided with a screwing-in side part and a screwing-out side part, and a first sliding groove and a second sliding groove are respectively arranged on the side surfaces of the screwing-in side part and the screwing-out side part, which are opposite to each other; the friction plate is arranged between the screwing-in side part and the screwing-out side part in a sliding mode, and a first abutting part matched with the first sliding groove and a second abutting part matched with the second sliding groove are respectively arranged at two ends of the friction plate; the side wall surface of the first sliding groove is further provided with a first open groove, the side wall surface of the second sliding groove is further provided with a second open groove, the first abutting portion is provided with a first clamping jaw matched with the first open groove, and the second abutting portion is provided with a second clamping jaw matched with the second open groove. The brake of the invention has light weight and small drag force, and the friction plate is not easy to be worn eccentrically.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a brake for a vehicle and the vehicle.
Background
In the related technology, the floating caliper type brake adopted by the vehicle is generally a hammer head type brake caliper and a common brake caliper, the sliding resistance of the brake caliper is overlarge, so that the dragging torque is large, the caliper frame is made of cast iron, and the weight is heavy; the oil consumption is high, the friction plate is driven back (far away from the direction of the brake disc) by the rotation of the brake disc due to the return of the friction plate in the common brake caliper, the dragging phenomenon is easy to generate in the method, and the caliper frame is made of cast iron and heavy in weight.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a brake for a vehicle, which has a light weight, a small drag force, and a friction plate that is less prone to eccentric wear.
The invention also provides a vehicle with the brake.
The brake for a vehicle according to the present invention includes: the clamp frame is provided with a screwing-in side part and a screwing-out side part, and a first sliding groove and a second sliding groove are respectively arranged on the side surfaces of the screwing-in side part and the screwing-out side part, which are opposite to each other; the friction plate is arranged between the screwing-in side part and the screwing-out side part in a sliding mode, and a first abutting part matched with the first sliding groove and a second abutting part matched with the second sliding groove are respectively arranged at two ends of the friction plate; the side wall surface of the first sliding groove is further provided with a first open groove, the side wall surface of the second sliding groove is further provided with a second open groove, the first abutting portion is provided with a first clamping jaw matched with the first open groove, and the second abutting portion is provided with a second clamping jaw matched with the second open groove.
According to the brake for the vehicle, the first sliding groove is formed in the screwing-in side portion of the caliper frame, the first open groove is formed in the first sliding groove, the first open groove is matched with the first clamping jaw on the first abutting portion on one side of the friction plate to transmit braking force, the other side of the friction plate is abutted with the second sliding groove through the second abutting portion to transmit the braking force, the contact area between the friction plate and the caliper frame is increased, the screwing-in side portion of the caliper frame and the screwing-out side portion of the caliper frame can transmit the braking force, the transmission of the braking force is more stable, the selection standard of the caliper frame is reduced, and the reliability of the brake is improved.
According to one embodiment of the invention, a first clamp spring is arranged in the first open groove, a second clamp spring is arranged in the second open groove, the first abutting portion is slidably arranged in the first clamp spring, and the second abutting portion is slidably arranged in the second clamp spring.
According to an embodiment of the present invention, the first snap spring is in interference fit with the first abutting portion, and the second snap spring is in interference fit with the second abutting portion.
According to an embodiment of the invention, the first open groove is provided with a first abutting surface which is suitable for abutting directly against the first clamping jaw, the second clamp spring is provided with a second abutting surface which is suitable for abutting directly against the second clamping jaw or/and the second abutting portion, and a friction coefficient of the first abutting surface is greater than that of the second abutting surface.
According to one embodiment of the present invention, the friction coefficient of the first abutting surface is μ 1, the friction coefficient of the second abutting surface is μ 2, and μ 1 satisfies: 0.1 or more and mu 1 or less and 0.2 or less, wherein mu 2 satisfies the following condition: mu 2 is more than or equal to 0.02 and less than 0.1.
According to an embodiment of the present invention, the first snap spring is disposed on an inner wall surface of the first sliding groove and a bottom wall surface of the first slot and a side wall surface far from the second slot, and the second snap spring is disposed on an inner wall surface of the second sliding groove and a bottom wall surface of the second slot and a side wall surface far from the first slot.
According to one embodiment of the invention, the friction plate comprises: the inner friction plate and the outer friction plate are respectively provided with a first abutting part matched with the first sliding groove and a second abutting part matched with the second sliding groove, and the inner friction plate and the outer friction plate are respectively arranged on the inner side and the outer side of the brake disc.
According to an embodiment of the invention, the brake further comprises: the caliper body is slidably arranged on the caliper frame and is suitable for driving the friction plate to be close to the brake disc.
According to one embodiment of the invention, the caliper body is provided with a first driving piece and a second driving piece which are used for driving the inner friction plate to move.
The vehicle according to the present invention is briefly described below.
The vehicle is provided with the brake for the vehicle of the embodiment, and the vehicle is provided with the brake of the embodiment, so that the vehicle is light in weight, low in oil consumption, good in reliability of the brake, and less prone to eccentric wear of friction plates.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an exploded view of a brake according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a brake according to an embodiment of the present invention;
FIG. 3 is an enlarged partial view of circled A in FIG. 2;
FIG. 4 is a schematic view of the construction of the jawset in one orientation in accordance with the embodiment of the present invention;
FIG. 5 is a schematic view of the jawset in another orientation in accordance with the embodiment of the present invention;
FIG. 6 is a schematic diagram of the force applied to the friction plate and the caliper frame according to the embodiment of the invention;
FIG. 7 is a schematic diagram of the friction plate, the clamp spring and the clamp frame according to the embodiment of the invention;
FIG. 8 is an enlarged partial view of circle B in FIG. 7;
fig. 9 is a force diagram of a brake according to an embodiment of the present invention.
Reference numerals:
the brake (100) is provided with a brake,
the clamp frame 110, a screw-in side portion 111, a first sliding groove 111a, a first slot 111b, a screw-out side portion 112, a second sliding groove 112a, a second slot 112b,
a friction plate 120, a first stopping part 121, a first jaw 121a, a second stopping part 122, a second jaw 122a,
the outer friction plates 120b, the inner friction plates 120a,
a first circlip 131, a second circlip 132,
the caliper body 140, the driving member 150, the first driving member 151, the second driving member 152, the guide pin 160,
a first stop surface 101 and a second stop surface 102.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A brake 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 6.
As shown in fig. 1, 2, 3 and 6, a brake 100 for a vehicle according to an embodiment of the present invention is provided with a caliper 110 and a friction plate 120, wherein the caliper 110 has a screw-in side portion 111 and a screw-out side portion 112, a first sliding groove 111a and a second sliding groove 112a are respectively provided on sides of the screw-in side portion 111 and the screw-out side portion 112 facing each other, the friction plate 120 is slidably provided between the screw-in side portion 111 and the screw-out side portion 112, and both ends of the friction plate 120 are respectively provided with a first abutting portion 121 engaged with the first sliding groove 111a and a second abutting portion 122 engaged with the second sliding groove 112 a. When the vehicle brakes, due to the contact between the friction plate 120 and the brake disc, a friction force is generated between the friction plate 120 and the brake disc, so that the friction plate 120 has a tendency to move towards the swing-out side portion 112, and the swing-out side portion 112 of the friction plate 120 abuts against the bottom wall of the second sliding groove 112a, wherein the caliper bracket 110 is fixed on a knuckle of the vehicle, and after the swing-out side portion 112 abuts against the second sliding groove 112a, the braking force between the friction plate 120 and the brake disc can be transmitted to the knuckle, thereby ensuring the stable braking of the vehicle brake 100. It should be noted here that the structures of the screwing-in side portion 111 and the screwing-out side portion 112 may be the same, and the screwing-in and screwing-out are relative to the rotation direction of the brake disc.
A first open slot 111b is further provided on the side wall surface of the first sliding slot 111a, a second open slot 112b is further provided on the side wall surface of the second sliding slot 112a, a first claw 121a matching with the first open slot 111b is provided on the first abutting portion 121, a second claw 122a matching with the second open slot 112b is provided on the second abutting portion 122, wherein the extending direction of the first open slot 111b may be different from the extending direction of the first sliding slot 111a, the extending direction of the second open slot 112b may be different from the extending direction of the second sliding slot 112a, during braking, the brake 100 rotates out the side portion 112 to abut against the bottom wall surface of the second sliding slot 112a, the braking force is transmitted by the rotation out side portion 112 contacting with the bottom wall surface of the second sliding slot 112a, so as to transmit the braking force of the friction plate 120 to the caliper frame 110, the first claw 121a screwed into the side portion 111 is adapted to match with the first open slot 111b, so that a part of the friction force generated between the friction plate 120 and the brake disc can be transmitted through the matching of the first jaw 121a and the first slot 111b, and the other part of the brake force can be transmitted through the matching of the second sliding groove and the second abutting portion 122 at the screwing-out end of the friction plate 120, so that both ends of the caliper frame 110 can bear force, the contact area between the friction plate 120 and the caliper frame 110 is increased, the pressure of the contact part of the caliper frame 110 and the friction plate 120 is reduced, the selection requirement of the caliper frame 110 is reduced, and the light weight of the caliper frame 110 is facilitated.
Compared with the caliper frame in the prior art, the caliper frame in the prior art only stops against the friction plate at the screwing-out end, so that the screwing-out side part and the screwing-in side part of the caliper frame in the prior art need to be connected to increase the structural strength of the caliper frame, and in the brake 100 of the invention, the screwing-in side part 111 and the screwing-out side part 112 of the caliper frame 110 can transmit braking force with the friction plate 120, so that a connecting structure for connecting the screwing-in side part 111 and the screwing-out side part 112 can be omitted, the weight of the caliper frame 110 is further reduced, the structure of the caliper frame 110 is simpler, and the cost of the brake 100 is reduced.
According to the brake 100 for the vehicle of the present invention, the first sliding groove 111a is provided on the screwing-in side portion 111 of the caliper 110, the first open groove 111b is provided on the first sliding groove 111a, the first open groove 111b is engaged with the first jaw 121a on the first abutting portion 121 on one side of the friction plate 120 to transmit the braking force, and the other side of the friction plate 120 is abutted with the second sliding groove 112a through the second abutting portion 122 to transmit the braking force, so that the contact area between the friction plate 120 and the caliper 110 is increased, the screwing-in side portion 111 of the caliper 110 and the screwing-out side portion 112 of the caliper 110 can both transmit the braking force, the transmission of the braking force is more stable, the selection standard of the caliper 110 is reduced, and the reliability of the brake 100 is improved.
According to an embodiment of the present invention, a first snap spring 131 is disposed in the first slot 111b, a second snap spring 132 is disposed in the second slot 112b, the first abutting portion 121 is slidably disposed in the first snap spring 131, the second abutting portion 122 is slidably disposed in the second snap spring 132, the first snap spring 131 and the second snap spring 132 are both configured as flexible members, the first snap spring 131 is in interference fit with the first abutting portion 121, and the second snap spring 132 is in interference fit with the second abutting portion 122.
The first clamp spring 131 can be firstly clamped and fixed at the screwed-in side portion of the caliper frame 110, the first clamp spring 131 can be arranged in the first sliding groove 111a and then is matched with the first abutting portion 121 of the friction plate 120, the first clamp spring 131 can be used for clamping the first abutting portion 121 of the friction plate 120, and the friction plate 120 is prevented from vibrating; the second snap spring 132 may be first fastened and fixed to the screw-out portion of the caliper frame 110, the second snap spring 132 may be disposed in the second sliding groove 112a and then matched with the second abutting portion 122 of the friction plate 120, the second snap spring 132 may be used to clamp the second abutting portion 122 of the friction plate 120, so as to prevent the friction plate 120 from vibrating, and since the second snap spring 132 is a flexible member, the second snap spring 132 may slide relative to the second abutting portion 122.
Through the arrangement of the first snap spring 131 and the second snap spring 132, both ends of the friction plate 120 can be limited by the first snap spring 131 and the second snap spring 132, the first snap spring 131 and the second snap spring 132 are elastic members, so that the bounce of the friction plate 120 can be reduced, and the first abutting portion 121 and the second abutting portion 122 of the friction plate 120 are prevented from being disengaged from the first sliding groove and the second sliding groove.
It should be noted here that the first abutting portion 121 and the first sliding groove 111a are in clearance fit to ensure that the first abutting portion 121 can be smoothly installed in the first sliding groove 111a, the first sliding groove 111a can be used for limiting the moving range of the first abutting portion 121, because the snap spring is an elastic member, the first snap spring 131 can only weaken the bounce of the friction plate 120 to a certain extent, the first abutting portion 121 still needs the side wall surface of the first sliding groove 111a to limit the moving range of the first abutting portion 121, and the second abutting portion 122 has the same structure as the first abutting portion 121.
As shown in fig. 3 and 6, according to an embodiment of the present invention, the first slot 111b is provided with a first abutting surface 101 for directly abutting against the first claw 121a, the second snap spring 132 is provided with a second abutting surface 102 adapted to directly abut against the second claw 122a or/and the second abutting portion 122, and a friction coefficient of the first abutting surface 101 is greater than a friction coefficient of the second abutting surface 102.
During braking of the vehicle, the first stopping portion 121 of the friction plate 120 has a tendency of moving away from the first sliding groove 111a, the first claw 121a on the first stopping portion 121 is adapted to contact with an inner wall surface of the first open groove 111b facing the screwing-out end, and the wall surface is a first stopping surface 101; the second clamp spring 132 is adapted to contact the second stopping portion 122, the second stopping portion 122 has a moving tendency toward the screw-out side portion 112, and the second stopping portion 122 is adapted to press the second clamp spring 132 against the bottom wall of the second sliding groove 112 a.
The frictional force between the friction plate 120 and the brake disc is related to a positive pressure acting between the friction plate 120 and the brake disc, the driving member 150 is adapted to push the friction plate 120 to move toward the brake disc, the driving member 150 applies the same force to the first abutting portion 121 and the second abutting portion 122 of the friction plate 120, a positive pressure is generated between the friction plate 120 and the caliper frame 110 after the friction plate 120 moves toward the brake disc and contacts the brake disc, and the friction plate 120 has a tendency to move toward the brake disc, thereby changing the positive pressure acting between the friction plate 120 and the brake disc.
The positive pressure of the first abutting portion 121 on the friction plate 120 is the difference between the positive pressure applied to the first abutting portion 121 by the driving member 150 and the friction force generated on the first abutting surface 101, the positive pressure of the second abutting portion 122 on the friction plate 120 is the difference between the positive pressure applied to the second abutting portion 122 by the driving member 150 and the friction force generated on the second abutting surface 102, during the braking process, the positive pressures applied to the first abutting surface 101 and the second abutting surface 102 are braking forces, so the positive pressures on the first abutting surface 101 and the second abutting surface 102 are the same, the friction coefficient of the first abutting surface 101 is greater than that of the second abutting surface 102, the difference between the positive pressure on the first abutting portion 121 and the friction force generated on the first abutting surface 101 is reduced, the friction force between the rotating end side of the friction plate 120 and the brake disc is reduced, and the wear of the rotating end of the friction plate 120 is substantially equal to the wear of the rotating end of the friction plate 120, the eccentric wear of the friction plate 120 can be reduced to some extent, and the stability of the brake 100 can be improved.
It should be noted that, in the prior art, when the friction plate 120 brakes, the abrasion of the screwing end is larger than that of the screwing end of the friction plate 120.
Further, the friction coefficient of the first abutting surface 101 is μ 1, the friction coefficient of the second abutting surface 102 is μ 2, and μ 1 satisfies: mu 1 is more than or equal to 0.1 and less than or equal to 0.2, and mu 2 satisfies the following conditions: mu 2 is more than or equal to 0.02 and less than 0.1, and the friction coefficient mu 1 of the first abutting surface 101 and the friction coefficient mu 2 of the second abutting surface 102 are set in the range, so that the eccentric wear problem of the friction plate 120 can be effectively solved.
As shown in fig. 8, according to an embodiment of the present invention, the first clamp spring 131 is disposed on the inner wall surface of the first sliding groove 111a, the bottom wall surface of the first open groove 111b, and the side wall surface far away from the second open groove 112b, and the first clamp spring 131 can effectively limit the first abutting portion 121, so as to prevent the first abutting portion 121 from jumping in the up-down direction in fig. 8, so as to ensure the stability of the friction plate 120; similarly, the second snap spring 132 is disposed on the inner wall surface of the second sliding groove 112a, the bottom wall surface of the second open groove 112b, and the side wall surface far away from the first open groove 111b, the second snap spring 132 can effectively limit the second abutting portion 122, and prevent the second abutting portion 122 from jumping, so as to ensure the stability of the friction plate 120, and the first snap spring 131 and the second snap spring 132 are configured as the above structure, so that the stability of the friction plate 120 of the brake 100 in the vehicle driving process can be effectively improved, and the reliability of the brake 100 is improved.
As shown in fig. 9, taking a two-cylinder brake caliper as an example, the positive pressure of each piston is F, and F ═ pi × r2 ×, where r is the cylinder diameter of the piston and p is the hydraulic pressure of the brake caliper, and the friction pad is divided into two parts in the middle, and the tangential force is generated by the rotation of the brake disc: f 'is 2F ×, μ, where μ is a friction coefficient of a side surface of the friction plate contacting the brake disc, a thrust F1 of the friction plate near the rotation end is F- (F'/2) × μ 1, and a thrust F2 of the friction plate near the rotation end is F- (F '/2) × μ 2, where it should be noted that, since the first abutting surface 101 and the second abutting surface 102 are provided between the caliper 110 and the friction plate 120, a positive pressure between each abutting surface and the caliper 110 is F'/2, μ 1 is a friction coefficient of the first abutting surface 101, and μ 2 is a friction coefficient of the second abutting surface 102. The difference between the thrust F2 of the friction plate near the rotation-out end and the thrust F1 of the friction plate near the rotation-in end is F2-F1 ═ F- (F '/2) × μ 1] - [ F- (F '/2) × μ 2] ═ F '/2 ([ mu 1- μ 2) ].
In the common brake in the prior art, a friction plate is only contacted with a caliper bracket at a screw-out end, the same double-cylinder brake caliper is adopted, the positive pressure of each piston is F, and the tangential force is generated by the rotation of a brake disc: f ' is 2F ═ mu, the thrust F1 of the friction plate near the rotation-in end is F, the caliper frame of the ordinary brake is stressed on one side, the friction force between the friction plate and the caliper frame is only at the rotation-out end, the thrust F2 of the friction plate near the rotation-out end is F-F ' × mu 1, and the difference between the thrust F2 of the friction plate near the rotation-out end and the thrust F1 of the friction plate near the rotation-in end is F2-F1 ═ F ' × mu 1.
The pressure difference between the rotating end and the rotating end of the common brake caliper is-F '. mu.1, while the pressure difference between the rotating end and the rotating end of the friction plate on the brake of the invention is (F '/2). mu.1-mu.2, and because the pressure difference is larger than the pressure difference of the rotating end and the rotating end of the friction plate on the brake of the invention, and the pressure difference is larger than the pressure difference of the rotating end and the rotating end of the friction plate on the brake of the invention, (F '/2). mu.1-mu.2) is far larger than the pressure difference of the rotating end and the rotating end of the friction plate on the brake of the invention, the brake of the invention can effectively relieve the eccentric wear.
According to one embodiment of the present invention, friction plate 120 includes: the inner friction plate 120a and the outer friction plate 120b are respectively provided with a first stopping part 121 matched with the first sliding groove 111a and a second stopping part 122 matched with the second sliding groove 112a, and the inner friction plate 120a and the outer friction plate 120b are respectively arranged on the inner side and the outer side of the brake disc so as to be suitable for clamping the brake disc from the inner side and the outer side of the friction plate 120.
According to an embodiment of the present invention, the brake 100 further includes a caliper body 140, the caliper body 140 is slidably disposed on the caliper frame 110 and adapted to drive the friction plate 120 to approach the brake disc, the caliper body 140 is connected to the caliper frame 110 by a guide pin 160, the weight of the caliper body 140 is transmitted to the caliper frame 110 by the guide pin 160, and the caliper body 140 does not contact the friction plate 120 to prevent the caliper body 140 from interfering with the movement of the friction plate 120.
Compared with the prior art, the caliper body of the hammer type brake caliper is arranged on the friction plate, so that the sliding resistance of the friction plate is increased, the friction plate of the hammer type brake caliper is not easy to reset after braking is finished, the dragging force of the brake caliper is increased, the weight of the caliper body 140 of the brake 100 is not directly applied to the friction plate 120 any more, the friction force between the friction plate 120 and the caliper frame 110 is reduced, and the dragging force of the brake 100 after braking is finished is reduced.
According to an embodiment of the present invention, the caliper body 140 is provided with a first driving member 151 and a second driving member 152 for driving the inner friction plate 120a to move, the first driving member 151 may be disposed on one side of the rotational end of the friction plate 120, the second driving member 152 may be disposed on one side of the rotational end of the friction plate 120, and the driving force of the first driving member 151 may be smaller than the driving force of the second driving member 152, so as to reduce the wear of the friction plate 120 on one side close to the rotational end, so as to alleviate the eccentric wear of the friction plate 120, although the driving force of the first driving member 151 and the driving member of the second driving member 152 may also be the same.
The vehicle according to the present invention is briefly described below.
The vehicle according to the present invention is provided with the brake 100 for a vehicle according to the above-described embodiment, and the vehicle according to the present invention is provided with the brake 100 according to the above-described embodiment, so that the vehicle is light in weight, low in fuel consumption, and good in reliability of the brake 100, and the friction plates 120 are not easily worn unevenly.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A brake (100) for a vehicle, comprising:
the clamp frame (110) is provided with a screwing-in side part (111) and a screwing-out side part (112), and the mutually opposite side surfaces of the screwing-in side part (111) and the screwing-out side part (112) are respectively provided with a first sliding groove (111a) and a second sliding groove (112 a);
the friction plate (120) is slidably arranged between the screwing-in side part (111) and the screwing-out side part (112), and two ends of the friction plate (120) are respectively provided with a first abutting part (121) matched with the first sliding groove (111a) and a second abutting part (122) matched with the second sliding groove (112 a); wherein
A first open slot (111b) is further formed in the side wall surface of the first sliding slot (111a), a second open slot (112b) is further formed in the side wall surface of the second sliding slot (112a), a first clamping jaw (121a) matched with the first open slot (111b) is arranged on the first abutting portion (121), and a second clamping jaw (122a) matched with the second open slot (112b) is arranged on the second abutting portion (122);
a first clamp spring (131) is arranged in the first open groove (111b), a second clamp spring (132) is arranged in the second open groove (112b), the first abutting part (121) is slidably arranged in the first clamp spring (131), and the second abutting part (122) is slidably arranged in the second clamp spring (132);
the first open slot (111b) is provided with a first abutting surface (101) which is suitable for abutting directly against the first clamping jaw (121a), the second clamp spring (132) is provided with a second abutting surface (102) which is suitable for abutting directly against the second clamping jaw (122a) or/and the second abutting portion (122), and the friction coefficient of the first abutting surface (101) is larger than that of the second abutting surface (102).
2. The brake (100) for a vehicle according to claim 1, characterized in that the first circlip (131) is in interference fit with the first abutment (121), and the second circlip (132) is in interference fit with the second abutment (122).
3. The brake (100) for vehicles according to claim 1, characterized in that the coefficient of friction of the first stop surface (101) is μ 1 and the coefficient of friction of the second stop surface (102) is μ 2, said μ 1 satisfying: 0.1 or more and mu 1 or less and 0.2 or less, wherein mu 2 satisfies the following condition: mu 2 is more than or equal to 0.02 and less than 0.1.
4. The brake (100) for a vehicle according to claim 1, wherein the first circlip (131) is provided on an inner wall surface of the first slide groove (111a) and a bottom wall surface of the first slot (111b) and a side wall surface away from the second slot (112b), and the second circlip (132) is provided on an inner wall surface of the second slide groove (112a) and a bottom wall surface of the second slot (112b) and a side wall surface away from the first slot (111 b).
5. The brake (100) for a vehicle according to claim 1, characterized in that the friction plate (120) comprises: the brake disc comprises an inner friction plate (120a) and an outer friction plate (120b), wherein a first abutting part (121) matched with the first sliding groove (111a) and a second abutting part (122) matched with the second sliding groove (112a) are arranged on the inner friction plate (120a) and the outer friction plate (120b), and the inner friction plate (120a) and the outer friction plate (120b) are respectively arranged on the inner side and the outer side of the brake disc.
6. The brake (100) for a vehicle according to claim 5, further comprising: the caliper body (140) is slidably arranged on the caliper frame (110) and is suitable for driving the friction plate (120) to be close to a brake disc.
7. The brake (100) for a vehicle according to claim 6, characterized in that the caliper body (140) is provided with a first driving member (151) and a second driving member (152) for driving the inner friction plate (120a) to move.
8. A vehicle, characterized in that it comprises a brake (100) according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162509.0A CN110966320B (en) | 2018-09-30 | 2018-09-30 | Brake for vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162509.0A CN110966320B (en) | 2018-09-30 | 2018-09-30 | Brake for vehicle and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110966320A CN110966320A (en) | 2020-04-07 |
| CN110966320B true CN110966320B (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811162509.0A Active CN110966320B (en) | 2018-09-30 | 2018-09-30 | Brake for vehicle and vehicle |
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| Country | Link |
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| CN (1) | CN110966320B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537282B (en) * | 2020-12-18 | 2021-10-29 | 南京信息职业技术学院 | Emergency brake device for unmanned automobile |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110966320A (en) | 2020-04-07 |
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