CN113775675B - Electric vehicle and brake device for electric vehicle - Google Patents
Electric vehicle and brake device for electric vehicle Download PDFInfo
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- CN113775675B CN113775675B CN202111288399.4A CN202111288399A CN113775675B CN 113775675 B CN113775675 B CN 113775675B CN 202111288399 A CN202111288399 A CN 202111288399A CN 113775675 B CN113775675 B CN 113775675B
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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
- F16D55/2265—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 the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
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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
- F16D55/2265—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 the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
- F16D55/227—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 the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
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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
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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
- F16D65/54—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses an electric automobile and brake equipment of the electric automobile, which comprises a brake caliper and a brake disc matched with the brake caliper, a guide part is arranged in the brake caliper, and two brake pads are arranged by the guide part, are respectively positioned at two sides of the brake disc and are directionally displaced by the guide part, and each brake pad is provided with a brake pad, and the brake pads are directionally moved to drive the brake pads to be in contact with the brake disc for braking, in the actual running process, on the basis of ensuring the single brake block to realize inching brake and the double brake block to realize repeated brake, under the condition of repeated brake, when the brake block is abraded and stable brake performance is influenced, the abraded brake block can be effectively compensated, so that stable double-brake block double-brake is guaranteed to be used, and better safety guarantee is provided.
Description
Technical Field
The invention relates to the technical field of electric braking equipment, in particular to an electric automobile and braking equipment of the electric automobile.
Background
The electric automobile (BEV) is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor, meets various requirements of road traffic and safety regulations, and has the working principle that: the accumulator-current-power regulator-motor-power transmission system-drive automobile.
At present, electric vehicles mainly include a pure electric vehicle (BEV), a Hybrid Electric Vehicle (HEV) and a Fuel Cell Electric Vehicle (FCEV), and conventionally, a brake device of an electric vehicle mainly uses an electronic brake system to brake, and a starting motor works during an electronic brake, drives brake pads on two sides to move by using a screw transmission, and contacts a brake disc to brake.
Traditionally, at the in-process of brake, brake block surface and brake disc surface meeting frictional contact, when the brake block because certain brake has appeared the brake block and has generated heat, the brake block at this moment will quick wearing and tearing, long-time wearing and tearing also can appear at the in-process brake block that the car used simultaneously, the brake block need be changed, otherwise will cause the malfunctioning phenomenon of brake to the personnel safety in giving the car causes the threat. Meanwhile, the quality and the price of the brake pad have larger difference, the price difference between the brake pad with good performance and the brake pad with poor performance is larger, and in order to consider the price and the performance of the brake pad, a user of an automobile often comprehensively selects the brake pad, so that the quality is ensured, and the price factor can be considered. However, the brake pad considered together does not perform as well as the brake pad with the best quality when the brake pad is strongly braked, so that the safety and price of the user of the automobile are difficult to decide.
According to the patent application No. CN201810264947.1, the disclosed automobile brake mechanism based on screw thread transmission comprises a fixed arc plate, a brake trigger mechanism, heat dissipation holes, a brake disc, mounting holes and a T-shaped groove, wherein the end face of the brake disc is provided with a plurality of through heat dissipation holes; the end surface of one end of the brake disc is fixedly arranged on the end surface of the driving shaft; a first accommodating cavity is formed in the inner circular surface of the fixed arc plate; the invention utilizes the different wearing brake pads when the light brake and the strong brake are used, so that people can realize that the brake pad needs to be replaced and can continue to safely drive by using the strong brake when the light brake fails. In addition, when the brake pad is installed, a little bit of brake pad can be installed on the working surface of the brake pad during light braking, and the brake pad with higher quality can be installed on the working surface of the brake pad during strong braking, so that the braking safety of the whole vehicle is improved, and the economy is ensured; therefore, the purpose of automobile safety can be achieved while the economy is ensured.
However, based on the characteristics of the structural design of the application, in the process of re-braking the dual brake pads, the brake pads for spot braking are still driven to continuously press and contact the brake disc when the brake pads for spot braking are worn, that is, although the brake pads for spot braking are worn, the brake pads for spot braking have the ability of compensating braking, and the rotation performance of the brake pads is not affected, but the brake pads on the other side cannot have the corresponding compensation ability after being worn, that is, when the brake pads are worn, the re-braking performance of the dual brake pads can be seriously affected, and the driving safety is affected, so that the brake equipment of the electric vehicle and the electric vehicle is provided.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems occurring in the background art, and an object of the present invention is to provide an electric vehicle and a brake apparatus for an electric vehicle.
In order to achieve the purpose, the invention provides the following technical scheme: the braking equipment of the electric automobile comprises a braking caliper and a brake disc used in a matched mode, wherein a guide piece is arranged in the braking caliper, two braking pads are arranged by the guide piece and are respectively positioned on two sides of the brake disc, the directional displacement is realized by the guide piece, a braking pad is arranged on each braking pad, and the directional movement of the braking pads drives the braking pads to be in contact with the brake disc for braking;
the brake caliper further comprises a bearing seat arranged in the brake caliper, a driving shaft is arranged on the bearing seat, the brake discs are located below the driving shaft, a first through hole is formed in each brake pad, a first linkage part is arranged in the first through hole in the brake pad close to the bearing seat, a second linkage part is arranged in the first through hole in the other brake pad, the driving shaft is connected with the first linkage part, so that the first linkage part is used for driving the brake pad to move when the driving shaft acts, and the driving shaft is in butt joint with the second linkage part when the driving shaft continues to act so as to drive the other brake pad to move;
the brake pad wear-resistant device further comprises a compensation mechanism arranged on the brake pad corresponding to the second linkage piece, and when the second linkage piece drives the corresponding brake pad to move and the brake pad on the side is worn, the compensation mechanism is used for compensating the difference of the brake pad.
Preferably, a guide rail sliding groove with limiting and anti-falling capabilities is formed in the brake caliper, the guide piece comprises a plurality of guide rail sliding blocks which are respectively installed at the tops of the two brake pads, and the guide rail sliding blocks slide in the guide rail sliding groove so that the brake pads can move directionally and are not separated from the brake caliper.
Preferably, the driving shaft is of a bidirectional screw structure with opposite thread directions at two ends, the inner diameter of the driving shaft is smaller than that of the first through hole, the driving shaft penetrates through the bearing seat in a threaded manner, and the bearing seat is used for driving the threads to move when the driving shaft rotates;
the first linkage part comprises a first threaded sleeve with internal threads, and the first threaded sleeve penetrates through the first through hole in the brake pad on the side in a sliding manner, is sleeved on the outer side of the driving shaft and is meshed with the driving shaft;
the brake pad structure is characterized in that a limiting sliding groove for limiting rotation is formed in the inner side wall of the through hole, a limiting sliding strip matched with the limiting sliding groove is arranged on one side edge of the screw sleeve, the limiting sliding strip is arranged in the limiting sliding groove in a sliding mode to limit the rotation of the screw sleeve, a first buckle plate is arranged at one end, away from the linkage part II, of the screw sleeve, a first spring is arranged on the outer side of the screw sleeve, and two ends of the first spring are connected with a brake pad and a buckle plate on the side respectively.
Preferably, the linkage part II comprises a threaded sleeve II with internal threads, the driving shaft can be in threaded butt joint with the threaded sleeve II, the threaded sleeve II slides through a first through hole on a brake pad corresponding to the linkage part II, a limiting sliding groove is also arranged on the first through hole, and a same limiting sliding strip is arranged on the threaded sleeve II to limit the rotation of the threaded sleeve II;
a second buckle plate is arranged at one end, far away from the first threaded sleeve, of the second threaded sleeve, a sliding plate is arranged on the outer side of one section, far away from the brake pad, of the second threaded sleeve, a second spring is arranged between the sliding plate and the brake pad, and two ends of the second spring are respectively connected with the sliding plate and the corresponding brake pad.
Preferably, a first through groove is formed in the sliding plate along the moving direction of the sliding plate, a third through hole which penetrates through and is communicated with the brake pad and the brake pad corresponding to the sliding plate is formed in the sliding plate, the compensation mechanism comprises a top plate which is slidably arranged in the third through hole, and one end, close to the brake pad, of the top plate is flush with the side edge, close to the brake disc, of one side of the brake pad;
the brake pad is further close to the brake disc when the brake disc on the brake pad is worn to cause insufficient compression of the spring II, and the top plate is driven to move unidirectionally in the first through groove by the transmission piece so as to compensate the difference of compression change of the spring II caused by further movement of the brake disc on the sliding plate.
Preferably, a bearing seat communicated with the first through groove is formed in the end portion of the sliding plate, the transmission piece comprises a fixed shaft arranged in the bearing seat, a ratchet mechanism is arranged on the fixed shaft, and a first gear is arranged on the outer ring of the ratchet mechanism;
the side, close to the first gear, of the sliding plate is provided with a continuous first tooth groove, the first gear is meshed with the first tooth groove, when the fixed shaft rotates, the fixed shaft drives the first gear to rotate through a ratchet mechanism, and the first tooth groove is used for driving the sliding plate to move;
the sliding plate is in close contact with the inner wall of the through groove I, the friction force of the sliding plate is utilized to provide rotation resistance for the first gear when the fixed shaft rotates reversely, and the ratchet mechanism is utilized to limit the first gear to rotate synchronously;
the brake also comprises a ball bearing arranged on the fixed shaft, the ball bearing is connected with the side brake pad, and when the brake pad is worn, the ball bearing is used for driving the fixed shaft to rotate.
Preferably, the ball comprises a second gear arranged at the end of the fixed shaft, the second gear has the same diameter as the first gear, a straight rod is arranged at the side of the brake pad, a second continuous tooth groove is formed in the straight rod, and when the brake pad is not worn, the second gear is in contact with two end parts of the tooth groove and is not meshed with the tooth groove.
Preferably, a third spring is arranged at one end of the sliding plate close to the brake pad, and two ends of the third spring are respectively connected with the sliding plate and the brake pad.
Preferably, the electric automobile comprises a brake device of the electric automobile, and the brake device of the electric automobile is the brake device of the electric automobile according to claims 1 to 8.
Compared with the prior art, the invention has the beneficial effects that:
the invention is different from the prior art, and can effectively compensate the worn brake block when the brake block is worn to influence the stable braking performance under the heavy braking state on the basis of ensuring the single brake block point braking and the double brake block heavy braking in the actual driving process, thereby ensuring the stable double brake block heavy braking and providing better safety guarantee.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of another orientation of the present invention shown in FIG. 1;
FIG. 3 is a schematic view of another embodiment of the present invention;
FIG. 4 is a schematic diagram of a caliper in accordance with the present invention;
FIG. 5 is a schematic view of another embodiment of the present invention;
FIG. 6 is a schematic sectional view of FIG. 5 according to the present invention;
FIG. 7 is a schematic view of another embodiment of the present invention shown in FIG. 6;
FIG. 8 is a schematic view of the plane partial cross-section of FIG. 4 according to the present invention.
In the figure: 1. a brake caliper; 11. a brake pad; 12. a brake pad; 13. a bearing seat; 14. a drive shaft; 15. a first through hole; 2. a brake disc; 3. a guide member; 31. a guide rail chute; 32. a guide rail slider; 4. a linkage piece I; 41. a first screw sleeve; 42. a limiting chute; 43. a limiting slide bar; 44. buckling a plate I; 45. a first spring; 5. a second linkage part; 51. a second threaded sleeve; 52. a second buckle plate; 53. a slide plate; 54. a second spring; 6. a compensation mechanism; 61. a first through groove; 62. a top plate; 63. a third through hole; 7. a transmission member; 71. a bearing seat; 72. a fixed shaft; 73. a ratchet mechanism; 74. a first gear; 75. a first tooth groove; 8. and a ball.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution:
referring to figures 1-3:
the braking equipment of the electric automobile comprises a brake caliper 1 and a brake disc 2 which is matched with the brake caliper 1, wherein the brake disc 2 is provided with heat dissipation holes so as to increase the heat dissipation capacity of the brake disc 2, and meanwhile, the heat dissipation holes are used for removing powder which is rubbed in the braking process, so that the side effect of the powder in the braking process is reduced, and further the braking noise is reduced;
further, a guide part 3 is arranged in the brake caliper 1, two brake pads 11 are arranged by the guide part 3, the two brake pads 11 are respectively positioned at two sides of the brake disc 2, the guide part 3 is used for directional displacement, each brake pad 11 is provided with a brake pad 12, and the brake pads 11 are directionally moved to drive the brake pads 12 to be in contact with the brake disc 2 for braking;
the brake caliper further comprises a bearing seat 13 arranged in the brake caliper 1, a driving shaft 14 is arranged on the bearing seat 13, the brake disc 2 is positioned below the driving shaft 14, each brake pad 11 is provided with a through hole one 15, a linkage part one 4 is arranged in the through hole one 15 on the brake pad 11 close to the bearing seat 13, a linkage part two 5 is arranged in the through hole one 15 on the other brake pad 11, the driving shaft 14 is connected with the linkage part one 4, so that the brake pad 11 is driven to move by the linkage part one 4 when the driving shaft 14 acts, and the driving shaft 14 is butted with the linkage part two 5 when the driving shaft 14 continues to act, so that the other brake pad 11 is driven to move;
the double-brake-disc-type double-brake system further comprises a compensation mechanism 6 arranged on the brake pad 11 corresponding to the linkage piece II 5, when the linkage piece II 5 drives the corresponding brake pad 11 to move and the brake disc 12 on the side is worn, the compensation mechanism 6 is used for compensating the difference of the brake disc 12, and therefore stable, safe and efficient double-brake-disc 12 is guaranteed to be used for re-braking.
Referring to FIG. 7:
the guide 3 is supplemented as an embodiment, a guide rail sliding groove 31 with limiting and anti-dropping capabilities is arranged in the brake caliper 1, the guide 3 comprises a plurality of guide rail sliding blocks 32 respectively installed at the tops of the two brake pads 11, and the guide rail sliding blocks 32 slide in the guide rail sliding grooves 31 so that the brake pads 11 move directionally and do not separate from the brake caliper 1;
it should be noted that the guide rail sliding groove 31 may be a T-shaped groove structure or a dovetail groove structure, but is not limited to this, and may also be a groove structure with a large inner diameter and a small notch, so as to ensure stable anti-falling and displacement-preventing capability, so that the guide rail sliding block 32 slides in the guide sliding groove 331 and cannot be separated from the guide rail sliding block, and ensure that the corresponding brake pad 11 can only perform directional movement.
Referring to FIG. 5:
the linkage member 4 is supplemented as an embodiment, the driving shaft 14 is a bidirectional screw structure with opposite thread directions at two ends, and the inner diameter is smaller than the through hole one 15, that is, the brake pad 11 is not directly driven to move by the threads in the actual use process, and the threads penetrate through the bearing seat 13, and by the design, the threads of the driving shaft 14 are driven to move by the bearing seat 13 when the driving shaft 14 rotates;
the linkage part I4 comprises a threaded sleeve I41 with internal threads, and the threaded sleeve I41 penetrates through the through hole I15 on the side brake pad 11 in a sliding mode, is sleeved on the outer side of the driving shaft 14 and is meshed with the driving shaft;
the inner side wall of the first through hole 15 is provided with a limiting sliding groove 42 for providing rotation limiting, the side edge of the first thread insert 41 is provided with a limiting sliding strip 43 matched with the limiting sliding groove 42, the limiting sliding strip 43 is arranged in the limiting sliding groove 42 in a sliding mode to limit the rotation of the first thread insert 41, one end, far away from the linkage part two 5, of the first thread insert 41 is provided with a buckle plate I44, the outer side of the first thread insert 41 is provided with a spring I45, two ends of the spring I45 are respectively connected with the brake pad block 11 and the buckle plate I44 on the side, through the structural design, when the driving shaft 14 rotates, the first thread insert 41 can be firstly moved in a spiral mode and is driven to move, the first spring I45 is extruded when the first thread insert 41 moves, and then the brake pad 11 is driven to drive the brake pad 12 to be tightly attached to the brake disc 2 for braking;
it should be noted that the driving shaft 14 in the present application directly adopts the existing driving method described in the reference document in the background art, but it should be noted that the driving method is preferred but not limited, and it is sufficient to ensure stable driving.
Referring to FIG. 7:
the linkage member II 5 is supplemented as an embodiment, the linkage member II 5 comprises a threaded sleeve II 51 with internal threads, the driving shaft 14 can be in threaded butt joint with the threaded sleeve II 51, the threaded sleeve II 51 slides through a through hole I15 on the brake pad 11 corresponding to the linkage member II 5, a limiting sliding groove 42 is also arranged on the through hole I15, and the threaded sleeve II 51 is provided with a same limiting sliding strip 43 to limit the rotation of the threaded sleeve II 51, and the arrangement of the position is the same as that of the linkage member I4;
but the difference is that a second buckle 52 is arranged at one end of the second thread insert 51 far away from the first thread insert 41, a sliding plate 53 is arranged at one section of the outer side of the second thread insert 51 far away from the brake pad 11, a second spring 54 is arranged between the sliding plate 53 and the brake pad 11, and two ends of the second spring 54 are respectively connected with the sliding plate 53 and the corresponding brake pad 11;
when the driving shaft 14 moves spirally, the driving shaft is abutted with the second thread insert 51, and in a state that the second thread insert 51 is limited to rotate, the second thread insert 51 is driven to move close to the brake pad 11, and at the moment, the second pinch plate 52 drives the sliding plate 53 to push the second spring 54 to compress, so that the corresponding brake pad 11 is driven to drive the brake pad 12 to brake.
Further, with reference to FIG. 8:
the compensating mechanism 6 is supplemented as an embodiment, a first through groove 61 is formed on the sliding plate 53 along the moving direction of the sliding plate 53, a third through hole 63 which penetrates through and is communicated with the brake pad 11 and the brake pad 12 corresponding to the sliding plate 53 is formed on the sliding plate 53, the compensating mechanism 6 comprises a top plate 62 which is slidably arranged in the third through hole 63, and one end of the top plate 62 close to the brake pad 12 is flush with one side edge of the brake pad 12 close to the brake disc 2;
the brake disc further comprises a transmission piece 7 which is arranged on the side brake pad 11 and used for limiting the unidirectional movement of the top plate 62, when the brake disc 12 on the brake pad 11 is worn to cause the compression amount of the second spring 54 to be insufficient, the brake disc 12 is further close to the brake disc 2, and the top plate 62 is driven to move unidirectionally in the first through groove 61 through the transmission piece 7 so as to compensate the difference of the compression change of the second spring 54 caused by the further movement of the brake disc 12 on the sliding plate 53;
it should be noted that, if the side brake pad 12 is intact, and the compression amount of the slide plate 53 on the side of the coupling element two 5 pressing the spring two 54 is X when the double brake pad 12 brakes, then when the brake pad 12 wears and the braking performance is degraded, the contact friction force between the brake pad 12 and the brake disc 2 is reduced, and the contact friction is closely related to the pressure of the spring two 54 received by the brake pad 12, that is, the pressing force of the spring two 54 to the brake pad 12 is reduced, the deformation amount of the spring two 54 is reduced, that is, the compression amount Y of the spring two 54 is smaller than the normal value X, in this process, the transmission element 7 is used to drive the top plate 62 to move, and it needs to be further supplemented that the distance between the end of the top plate 62 far from the brake disc 2 and the side of the brake pad 11 is always equal to X, and the wear of the brake pad 12 is compensated by the movement of the top plate 62, at the moment, the second buckle plate 52 pushes against the top plate 62 to drive the brake pad 11 to move, so as to ensure that the brake pad 12 is driven to effectively contact with the brake disc 2 for braking.
Further, as an embodiment, the transmission member 7 includes a bearing seat 71 provided on the brake pad 11, a fixed shaft 72 is provided in the bearing seat 71, a ratchet mechanism 73 is provided on the fixed shaft 72, and a first gear 74 is provided on an outer ring of the ratchet mechanism 73;
a continuous tooth slot I75 is arranged on one side of the top plate 62 close to the gear I74, the gear I74 is meshed with the tooth slot I75, and when the top plate 62 moves, the ratchet mechanism 73 is used for limiting the top plate 62 to rotate in a single direction.
Further, inlay at roof 62 one end that is close to brake disc 2 and be equipped with ball 8 to utilize ball 8 and brake disc 2 rolling contact, become rolling friction with the sliding friction between roof 62 and the brake disc 2, reduce the loss of roof 62, guarantee its accurate compensation and use.
Further, the top plate 62 is in close contact with and pressed against the sides of the through hole 63 to provide frictional retention.
When the scheme is used, when the driving shaft 11 rotates, firstly, under the limitation of the guide piece 3, the first thread sleeve 41 is driven to drive the first buckle plate 44 to move, and then the spring 45 is compressed to drive the side brake pad 11 to drive the side brake pad 12 to contact the brake disc 2, so that the point brake of the single brake pad 12 is realized;
it should be noted that when the driving shaft 11 rotates, the driving shaft 11 is also caused to spirally displace under the restriction of the bearing seat 13, and in the process of the spiral displacement, the driving shaft 11 is abutted to the second thread sleeve 51, and drives the second thread sleeve 51 and the second buckle plate 52 to drive the sliding plate 53 to move and compress the second spring 54, so as to drive the side brake pad 11 to drive the brake pad 12 to move and contact the brake disc 2, so as to re-brake the double brake pad 12, in the above process, the top plate 62 is inserted into the first through groove 61 on the sliding plate 53, and in the limit re-brake state, the second buckle plate 52 just contacts the top plate 62;
during the continuous wear of brake pad 12, brake pad 12 is still in continuous contact with disc 2, but spring two 54 is loaded with insufficient pressure, but during this process, since top plate 62 is free to move, i.e., during wear of brake pad 12, top plate 62 will move to avoid wear, during the moving process, the top plate 62 extends from the other side of the brake pad 12, and drives the first gear 74 to walk while extending, and the ratchet mechanism 73 is arranged to avoid the reverse self-moving reset of the top plate 62, and it should be noted that, as much the brake pad 12 is worn, the top plate 62 moves, that is, when the second pinch plate 52 moves to push the top plate 62, the brake pad 11 can still be stably pushed to drive the worn brake pad 12 to effectively contact the brake disc 2 through the compensation amount of the top plate 62, and therefore the safe and effective double brake pads 12 are guaranteed to be used for re-braking.
Further, an electric vehicle includes a brake device of the electric vehicle, and the brake device of the electric vehicle is the brake device of the electric vehicle according to claims 1 to 8.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Braking equipment of electric automobile, including braking pincers (1) and supporting brake disc (2) that use, its characterized in that: a guide piece (3) is arranged in the brake caliper (1), two brake pads (11) are arranged by the guide piece (3), the two brake pads (11) are respectively positioned at two sides of the brake disc (2), the guide piece (3) is used for directional displacement, a brake pad (12) is arranged on each brake pad (11), and the brake pads (11) are directionally moved to drive the brake pads (12) to be in contact with the brake disc (2) for braking;
the brake caliper further comprises a bearing seat (13) arranged in the brake caliper (1), a driving shaft (14) is arranged on the bearing seat (13), the brake disc (2) is located below the driving shaft (14), a first through hole (15) is formed in each brake pad (11), a first linkage part (4) is arranged in the first through hole (15) of the brake pad (11) close to the bearing seat (13), a second linkage part (5) is arranged in the first through hole (15) of the other brake pad (11), the driving shaft (14) is connected with the first linkage part (4), the first linkage part (4) is used for driving the brake pad (11) to move when the driving shaft (14) moves, and the driving shaft (14) is butted with the second linkage part (5) when the driving shaft (14) continues to drive the other brake pad (11) to move; the brake caliper further comprises a compensation mechanism (6) arranged on the brake pad (11) corresponding to the second linkage part (5), when the second linkage part (5) drives the corresponding brake pad (11) to move and the side brake pad (12) is worn, the compensation mechanism (6) is used for compensating the difference of the brake pad (12), a guide rail sliding groove (31) with limiting and anti-dropping capacity is formed in the brake caliper (1), the guide part (3) comprises a plurality of guide rail sliding blocks (32) which are respectively arranged on the tops of the two brake pads (11), the guide rail sliding blocks (32) slide in the guide rail sliding groove (31) to enable the brake pads (11) to move directionally and not to be separated from the brake caliper (1), the driving shaft (14) is of a bidirectional screw rod structure with opposite thread directions at two ends, the inner diameter is smaller than that of the first through hole (15), and the driving shaft penetrates through the bearing seat (13), when the screw is rotated, the bearing seat (13) is used for driving the screw to displace;
the linkage piece I (4) comprises a threaded sleeve I (41) with internal threads, and the threaded sleeve I (41) penetrates through a through hole I (15) in the brake pad block (11) on the side in a sliding mode, is sleeved on the outer side of the driving shaft (14) and is meshed with the driving shaft;
a limiting sliding groove (42) for limiting rotation is formed in the inner side wall of the first through hole (15), a limiting sliding strip (43) matched with the limiting sliding groove (42) is arranged on the side edge of the first threaded sleeve (41), the limiting sliding strip (43) is arranged in the limiting sliding groove (42) in a sliding mode to limit the rotation of the first threaded sleeve (41), a first buckle plate (44) is arranged at one end, away from the second linkage part (5), of the first threaded sleeve (41), a first spring (45) is arranged on the outer side of the first threaded sleeve (41), two ends of the first spring (45) are respectively connected with the brake pad (11) and the first buckle plate (44) on the side, the second linkage part (5) comprises a second threaded sleeve (51) with internal threads, the driving shaft (14) can be in threaded butt joint with the second threaded sleeve (51), and the second threaded sleeve (51) slides through the first through hole (15) on the brake pad (11) corresponding to the second linkage part (5), a limiting sliding groove (42) is also formed in the through hole I (15), and a limiting sliding strip (43) is also arranged on the screw sleeve II (51) to limit the screw sleeve II (51) to rotate;
a second buckle plate (52) is arranged at one end of the second thread insert (51) far away from the first thread insert (41), and a sliding plate (53) is arranged on the outer side of one section of the second turnbuckle (51) far away from the brake pad (11), a second spring (54) is arranged between the sliding plate (53) and the brake pad (11), two ends of the second spring (54) are respectively connected with the sliding plate (53) and the corresponding brake pad (11), a first through groove (61) is arranged on the sliding plate (53) along the moving direction of the sliding plate (53), and the brake pad (11) and the brake pad (12) corresponding to the sliding plate (53) are provided with a third through hole (63) which penetrates and is communicated with each other, the compensation mechanism (6) comprises a top plate (62) which is arranged in the through hole III (63) in a sliding way, one end of the top plate (62) close to the brake pad (12) is flush with the side edge of one side of the brake pad (12) close to the brake disc (2); also comprises a transmission piece (7) which is arranged on the side brake pad (11) and used for limiting the unidirectional movement of the top plate (62), when the brake plate (12) on the brake pad (11) is worn to cause the compression amount of the second spring (54) to be insufficient, the brake pad (12) is further close to the brake disc (2), the top plate (53) is driven to move in a single direction in the first through groove (61) by the transmission piece (7), to compensate for the difference in compression of the second spring (54) caused by further movement of the brake pad (12) on the slide plate (53), the transmission piece (7) comprises a bearing seat (71) arranged on the brake pad (11), a fixed shaft (72) is arranged in the bearing seat (71), a ratchet mechanism (73) is arranged on the fixed shaft (72), and a first gear (74) is arranged on the outer ring of the ratchet mechanism (73);
a continuous tooth socket I (75) is arranged on one side of the top plate ((62)) close to a gear I (74), the gear I (74) is meshed with the tooth socket I (75), and when the top plate (62) moves, the one-way displacement of the top plate (62) is limited through a ratchet mechanism (73).
2. The brake apparatus of an electric vehicle according to claim 1, characterized in that: and a ball (8) is embedded at one end of the top plate (62) close to the brake disc (2), and the ball (8) is in rolling contact with the brake disc (2).
3. The brake apparatus of an electric vehicle according to claim 2, characterized in that: the top plate (62) is tightly contacted with the side edge of the through hole III (63) and mutually extruded.
4. An electric vehicle, characterized in that: the electric vehicle includes a brake apparatus of the electric vehicle according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111288399.4A CN113775675B (en) | 2021-11-02 | 2021-11-02 | Electric vehicle and brake device for electric vehicle |
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|---|---|---|---|
| CN202111288399.4A CN113775675B (en) | 2021-11-02 | 2021-11-02 | Electric vehicle and brake device for electric vehicle |
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| CN113775675A CN113775675A (en) | 2021-12-10 |
| CN113775675B true CN113775675B (en) | 2022-05-24 |
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| CN202111288399.4A Active CN113775675B (en) | 2021-11-02 | 2021-11-02 | Electric vehicle and brake device for electric vehicle |
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