CN109099083B - Brake friction plate position control device for new energy vehicle - Google Patents
Brake friction plate position control device for new energy vehicle Download PDFInfo
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- CN109099083B CN109099083B CN201811034164.0A CN201811034164A CN109099083B CN 109099083 B CN109099083 B CN 109099083B CN 201811034164 A CN201811034164 A CN 201811034164A CN 109099083 B CN109099083 B CN 109099083B
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- friction plate
- brake
- push rod
- magnet
- control device
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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
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
Abstract
The invention discloses a brake friction plate position control device for a new energy vehicle, which is positioned on a brake, wherein the brake comprises a caliper body and a caliper support which are oppositely arranged, friction plate bottom plates are respectively arranged on the opposite sides of the caliper body and the caliper support, two opposite friction plates are arranged in the two friction plate bottom plates, the control device comprises magnet push rods respectively positioned on the two friction plate bottom plates, and the magnetic poles of the opposite sides of the two magnet push rods are the same. The invention has the advantages that the relative distance between the two friction plate bottom plates, namely the two friction plates, is controlled by the magnet push rod, and repulsion is provided to assist the friction plates to return when the friction plates are close, so that dragging force is reduced, and the service life of the friction plates is prolonged; the kinetic energy loss of the vehicle body during running is reduced, and the cruising ability of the electric vehicle is improved.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a brake friction plate position control device for a new energy automobile.
Background
The traditional disc brake has the problem that dragging torque always troubles a host factory, and when the torque is too large, the kinetic energy of the whole vehicle is consumed, so that the endurance is not ideal. In the electric vehicle, the dragging torque is more important whether reasonable or not because of being more sensitive to endurance. When the dragging torque is large, when the driver releases the brake, the brake pedal is released, but the wheel brake is still in a brake state wholly or partially, and the brake can not be quickly released. This causes the brake drum (disc) to heat up, and the running resistance increases. The existing method for solving the dragging torque of the brake mostly adopts a mode of increasing the rigidity of a return support or a rectangular sealing ring, and the rectangular rubber sealing ring plays a role in sealing, returning a piston and automatically adjusting a gap. During normal braking, oil is pressed into the inner wheel cylinder and the outer wheel cylinder, and the pistons of the oil press the two brake blocks to the brake disc under the hydraulic action, so that friction torque is generated to brake. At this time, the edge of the rectangular rubber seal in the cylinder groove is slightly elastically deformed by the friction force of the piston. When the brake is released, the piston and the brake block return by the elasticity of the rectangular sealing ring and the elasticity of the spring. Because the deformation of the edge of the rectangular sealing ring is very small, when the brake is not performed, the clearance between the friction plate and the disc is only about 0.1mm on each side, and the brake can be released sufficiently. And because the thickness of the brake disc is slightly changed when the brake disc is heated and expanded, the phenomenon of 'dragging' cannot occur. If the abrasion of the clearance between the friction plate and the disc of the brake block is increased, the piston can still move after the deformation of the sealing ring reaches the limit during braking until the friction plate presses the brake disc. After the brake is released, the distance for pushing the piston back by the rectangular rubber sealing ring is the same as that before abrasion, and the standard value is still kept. However, after the rectangular sealing ring is aged, the friction plate cannot return, the dragging torque is large, and the whole vehicle kinetic energy and the vehicle endurance capacity are influenced.
Although the rectangular rubber sealing ring can relieve dragging to a certain extent, the problem cannot be really solved due to the structure.
The utility model discloses a utility model with the name of "an electronic parking brake inner friction disc return structure" published in the publication number CN207315926U and the publication number 2018, 5/4, which discloses an electronic parking brake inner friction disc return structure, wherein a piston cylinder is connected below a brake shell, assembling rods are fixed on both sides of the brake shell, guide pin holes are arranged on the assembling rods, an inner friction disc spring contact surface is arranged in the brake shell, the inclination angle of the inner friction disc spring contact surface is 4 degrees, the utility model changes the original design angle of the inner friction disc spring contact surface from 0 degree to 4 degrees, so that in the braking process, the inner friction disc spring contact point is taken as the original point, the spring contact surface on the inner friction disc spring and the Electronic Parking (EPB) brake shell returns along the angle of 4 degrees, and the inner friction disc spring is compressed by the inner inclined plane of the brake shell, the component force of the inner friction plate in the return direction is increased, so that the inner friction plate can return smoothly and quickly, and the dragging torque is effectively reduced. The defect is that the brake can be only displayed before leaving factory or in the front of life cycle, and then the problems of abrasion of the friction plate and aging and dragging of the spring still occur.
Therefore, it is necessary to design a friction plate position control device capable of overcoming the drag of the friction plate to reduce the generation of the drag force.
Disclosure of Invention
The invention provides a brake friction plate position control device for a new energy vehicle, which aims to overcome the defects that the existing friction plate is unreliable in return and easily generates dragging torque to consume so as to influence the kinetic energy of the whole vehicle, and can stably control the friction plate to return and prevent the dragging torque from being generated.
In order to achieve the above object, the present invention adopts the following technical solutions.
The brake comprises a caliper body and a caliper support which are arranged oppositely, friction plate bottom plates are arranged on opposite sides of the caliper body and the caliper support respectively, two opposite friction plates are arranged in the two friction plate bottom plates, the control device comprises magnet push rods which are arranged on the two friction plate bottom plates respectively, and magnetic poles on opposite sides of the two magnet push rods are the same. The relative distance between the two friction plate bottom plates, namely the two friction plates, is controlled by the magnet push rod, and repulsion is provided to assist the friction plates to return when the friction plates are close, so that drag force is reduced, and the service life of the friction plates is prolonged; the kinetic energy loss of the vehicle body during running is reduced, and the cruising ability of the electric vehicle is improved.
Preferably, at least one magnet push rod is an electromagnet, the magnet push rod comprises a push rod main body and a coil for providing magnetic force for the push rod main body, a distance meter capable of detecting the distance between the two magnet push rods is arranged outside the magnet push rod, and the distance meter controls the current in the coil to be switched on and off. The magnet push rod is an electromagnet, the distance between the two friction plates is detected through the distance measuring instrument, and when the distance measuring instrument detects that the distance between the magnet push rod and the opposite installation block is too short, the coil is electrified to enable the magnet push rod to move outwards to drive the friction plates to return.
Preferably, a brake disc is arranged outside the caliper body, the caliper support is fixed on the brake disc, the caliper body is connected to the caliper support, and an EPB motor capable of pushing a friction plate on the caliper body to clamp is arranged on the caliper support. The brake disc is fixed on the wheel, and the friction disc of the caliper body and the friction disc on the caliper support are tightly clamped through the EPB motor to complete vehicle body braking, and after the braking process is finished, the friction disc on the caliper body resets under the action of the magnet push rod to prevent dragging.
Preferably, the magnet push rod is externally provided with a mounting block extending the magnetic field, and the distance meter is positioned on the mounting block. Improve the magnetic field force between the magnet push rod through the installation piece, make things convenient for the installation of distancer, the installation piece can also improve the installation stability of magnet push rod.
Preferably, the push rod main body comprises a connecting rod seat arranged on the bottom plate of the friction plate and a rod column arranged on the connecting rod seat, the two rod columns connected with the push rod are opposite, and the coil is arranged in the connecting rod seat. The compactness of structure is improved, and the coil is located the connecting rod seat, prevents to mix into in the coil and adsorbs magazines such as iron fillings, improves the magnetic force effect of coil.
Preferably, two ends of one side opposite to the two mounting blocks are provided with right-angle notches, the distance meter is mounted on one of the right-angle notches, and the distance meter is located behind the end face of the magnet push rod. The installation of the distance measuring instrument is convenient, and the return of the magnet push rod is convenient.
Preferably, the magnet push rod on the friction plate bottom plate of the caliper support is a permanent magnet, the magnet push rod on the friction plate bottom plate of the caliper body is an electromagnet with a coil, and the electromagnet is repelled from the permanent magnet after being electrified. The magnet push rod is electrified only when the distance between the magnet push rod and the friction plate is short, the repulsion force is stronger when the magnet push rod is short, the friction plate is prevented from being dragged, and the influence on the braking of the friction plate is small; when the magnet push rod is not electrified, the magnet push rod made of the permanent magnet can generate tiny magnetic attraction to the opposite electromagnetic push rod, and the two magnet push rods, namely the friction plates, tend to be driven to be close to each other, so that the quick response during initial braking is facilitated, and the response efficiency of the brake is improved.
Preferably, both magnet push rods are electromagnets, and the distance meter is positioned on the side of one of the magnet push rods. The two magnet push rods are electromagnets, and are electrified only when the magnet push rods are close to each other, the closer the magnet push rods are, the stronger the repulsive force is, so that dragging of the friction plate is prevented, and the influence on braking of the friction plate is small.
Preferably, the opposite ends of the push rods of the two magnets are respectively provided with a pressing block. The alignment areas of the two ends of the magnet push rods are enhanced through the pressing blocks, the repulsive force between the two magnet push rods is improved, and the two magnet push rods are favorable for driving the friction plates to return; the installation of the magnet push rod is facilitated through the pressing block.
Preferably, the distance meter is located on a mounting block on the caliper body. Make things convenient for the installation of distancer, can install the back on the calliper pincers body with the distancer, install the calliper pincers body again on the calliper support, the installation effectiveness is high, and the distancer debugging is convenient.
The invention has the advantages that:
1. the relative distance between the two friction plate bottom plates, namely the two friction plates, is controlled by the magnet push rod, and repulsion is provided to assist the friction plates to return when the friction plates are close, so that drag force is reduced, and the service life of the friction plates is prolonged;
2. the kinetic energy loss of the vehicle body during running is reduced, and the cruising ability of the electric vehicle is improved;
3. the installation effectiveness is high, and the distancer debugging is convenient.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a third embodiment of the present invention.
In the figure: the caliper body 1, the caliper support 2, the brake disc 3, the friction disc bottom plate 4, the friction disc reed 5, the coil 7, the magnet push rod 8, the connecting rod seat 81, the rod column 82, the pressing block 9, the EPB motor 10 and the range finder 11 mounting block 12.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
In fig. 1, a brake friction plate position control device for a new energy vehicle is located on a brake, the brake includes a caliper body 1 and a caliper support 2 which are arranged oppositely, friction plate bottom plates 4 are respectively arranged on opposite sides of the caliper body 1 and the caliper support 2, two opposite friction plates 6 are arranged in the two friction plate bottom plates 4, friction plate reeds 5 are arranged on two sides of the friction plate bottom plates 4, and the friction plate reeds 5 assist in fixing the friction plates 6. The control device comprises magnet push rods 8 which are respectively positioned on the two friction plate bottom plates 4, and the opposite sides of the two magnet push rods 8 have the same magnetic poles. The magnet push rod 8 comprises a push rod main body, the push rod main body comprises a connecting rod seat 81 arranged on the friction plate bottom plate 4 and a rod column 83 arranged on the connecting rod seat 81, the two rod columns 83 connected with the push rod are opposite, and the opposite ends of the two magnet push rods 8 are respectively provided with a pressing block 9. An installation block 12 for extending a magnetic field is arranged outside the magnet push rod 8, and a distance meter 11 is arranged on the installation block 12.
In fig. 2, a brake lining position control device for new energy vehicle is located the stopper, and the stopper includes the calliper body 1 and the calliper support 2 that set up relatively, and calliper body 1 is equipped with brake disc 3 outward, and calliper support 2 is fixed on brake disc 3, and calliper body 1 is connected on calliper support 2, and calliper body 1 can slide relatively calliper support 2 through the guide post. The caliper bracket 2 is provided with an EPB motor 10 which can push the friction plate 6 on the caliper body 1 to clamp. The opposite sides of the caliper body 1 and the caliper support 2 are respectively provided with a friction plate bottom plate 4, two opposite friction plates 6 are arranged in the two friction plate bottom plates 4, friction plate reeds 5 are arranged on the two sides of the friction plate bottom plate 4, and the friction plate reeds 5 assist in fixing the friction plates 6. The control device comprises magnet push rods 8 which are respectively positioned on the two friction plate bottom plates 4, the opposite sides of the two magnet push rods 8 have the same magnetic poles, and the two magnet push rods 8 are both made of permanent magnets. The magnet push rod 8 comprises a push rod main body, the push rod main body comprises a connecting rod seat 81 arranged on the friction plate bottom plate 4 and a rod column 83 arranged on the connecting rod seat 81, the two rod columns 83 connected with the push rod are opposite, and the opposite ends of the two magnet push rods 8 are respectively provided with a pressing block 9.
In fig. 3, a brake pad position control device for a new energy vehicle, the embodiment shown in fig. 3 is different from the embodiment shown in fig. 2 in that one of the magnet push rods 8 is an electromagnet, specifically, the magnet push rod 8 located on the pad bottom plate 4 of the caliper bracket 2 is a permanent magnet, the magnet push rod 8 located on the pad bottom plate 4 of the caliper body 1 is an electromagnet with a coil 7, and the electromagnet is repelled from the permanent magnet after being energized. The magnet push rod 8 comprises a push rod main body and a coil 7 providing magnetic force for the push rod main body, a distance meter 11 capable of detecting the distance between the two magnet push rods 8 is arranged outside the magnet push rod 8, and the distance meter 11 controls the current in the coil 7 to be switched on and switched off. The magnet push rod 8 is externally provided with a mounting block 12 for extending a magnetic field, and the distance measuring instrument 11 is positioned on the mounting block 12. The push rod main body comprises a connecting rod seat 81 arranged on the friction plate bottom plate 4 and a rod post 83 arranged on the connecting rod seat 81, the two rod posts 83 connected with the push rod are opposite, and the coil 7 is arranged in the connecting rod seat 81. Two ends of one side opposite to the two mounting blocks 12 are provided with right-angle notches, the distance meter 11 is mounted on one of the right-angle notches, and the distance meter 11 is positioned behind the end face of the magnet push rod 8. The opposite ends of the two magnet push rods 8 are respectively provided with a pressing block 9.
Only when the distance between the magnet push rod 8 and the magnetic plate is closer, the magnet push rod 8 is electrified, the closer the magnet push rod 8 is, the stronger the repulsive force is, the friction plate 6 is prevented from being dragged, and the influence on the braking of the friction plate 6 is small; when the magnet push rod 8 is not electrified, the magnet push rod 8 made of the permanent magnet can generate tiny magnetic attraction to the magnet push rod 8 of the electromagnet opposite to the magnet push rod 8, so that the two magnet push rods 8, namely the friction plates 6, are driven to approach, the quick response during initial braking is facilitated, and the response efficiency of the brake is improved.
In fig. 4, a brake pad position control device for a new energy vehicle, the embodiment shown in fig. 4 is different from the embodiment shown in fig. 2 in that two magnet push rods 8 are both electromagnets, and a distance meter 11 is located on the side of one of the magnet push rods 8. The distance meter 11 is located on a mounting block 12 on the caliper body 1. The opposite ends of the two magnet push rods 8 are respectively provided with a pressing block 9.
The two magnet push rods 8 are electromagnets, the distance between the two friction plates 6 is measured through the distance measuring instrument 11, and when the vehicle is braked normally, the distance measuring instrument 11 monitors the distance L between the two friction plates and the opposite mounting block 12 to obtain minimum distance data L. After the vehicle brake is released, the distance meter 11 obtains the distance at this time, which is L1. If L1 is greater than or equal to L + (0.2 +/-0.1), the clearance is normal, the drag torque is in the range, and the device does not work. If L1 is less than L + (0.2 + -0.1), the coil 7 is electrified to generate magnetic force to push the magnet push rod 8, the magnet push rod 8 pushes out to push the caliper body to be far away from the caliper body bracket, the gap is pushed to meet the requirement, and the auxiliary friction plate 6 is returned to prevent dragging. The relative distance between the two friction plate bottom plates 4, namely the two friction plates 6, is controlled by the magnet push rod 8, and when the friction plates 6 are close, repulsion is provided to assist the friction plates 6 to return, so that drag force is reduced, and the service life of the friction plates 6 is prolonged; the kinetic energy loss of the vehicle body during running is reduced, and the cruising ability of the electric vehicle is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A brake friction plate position control device for a new energy vehicle is positioned on a brake, the brake comprises a caliper body and a caliper support which are oppositely arranged, friction plate bottom plates are respectively arranged on opposite sides of the caliper body and the caliper support, two opposite friction plates are arranged in the two friction plate bottom plates, and the brake is characterized in that the control device comprises magnet push rods respectively positioned on the two friction plate bottom plates, and the magnetic poles of the opposite sides of the two magnet push rods are the same; at least one magnet push rod is an electromagnet, the magnet push rod comprises a push rod main body and a coil for providing magnetic force for the push rod main body, a distance meter capable of detecting the distance between the two magnet push rods is arranged outside the magnet push rod, and the distance meter controls the current in the coil to be switched on and switched off.
2. The brake pad position control device for the new energy vehicle as claimed in claim 1, wherein a brake disc is disposed outside the caliper body, the caliper bracket is fixed on the brake disc, the caliper body is connected to the caliper bracket, and an EPB motor capable of pushing the brake pad on the caliper body to clamp is disposed on the caliper bracket.
3. The brake friction plate position control device for the new energy vehicle as claimed in claim 1, wherein a mounting block for extending a magnetic field is provided outside the magnet push rod, and the distance meter is located on the mounting block.
4. The brake friction plate position control device for the new energy vehicle as claimed in claim 1 or 3, wherein the push rod main body comprises a connecting rod seat mounted on the friction plate bottom plate and a rod post located on the connecting rod seat, the two rod posts connected with the push rod are opposite, and the coil is located in the connecting rod seat.
5. The brake friction plate position control device for the new energy vehicle as claimed in claim 3, wherein two opposite ends of the two mounting blocks are provided with a right-angle notch, and the distance measuring instrument is mounted on one of the right-angle notches and is located behind the end face of the push rod of the magnet.
6. The brake friction plate position control device for the new energy vehicle as claimed in claim 1, 3 or 5, wherein the magnet push rod on the friction plate bottom plate of the caliper bracket is a permanent magnet, the magnet push rod on the friction plate bottom plate of the caliper body is an electromagnet with a coil, and the electromagnet repels the permanent magnet after being electrified.
7. The brake pad position control device for the new energy vehicle as claimed in claim 5, wherein the two magnet push rods are both electromagnets, and the distance measuring instrument is located at a side surface of one of the magnet push rods.
8. The brake pad position control device for the new energy vehicle as claimed in claim 1, 3, 5 or 7, wherein the two magnet push rods are provided at opposite ends thereof with press blocks, respectively.
9. The brake friction plate position control device for the new energy vehicle as claimed in claim 7, wherein the distance measuring instrument is located on a mounting block on the caliper body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811034164.0A CN109099083B (en) | 2018-09-05 | 2018-09-05 | Brake friction plate position control device for new energy vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811034164.0A CN109099083B (en) | 2018-09-05 | 2018-09-05 | Brake friction plate position control device for new energy vehicle |
Publications (2)
| Publication Number | Publication Date |
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| CN109099083A CN109099083A (en) | 2018-12-28 |
| CN109099083B true CN109099083B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811034164.0A Active CN109099083B (en) | 2018-09-05 | 2018-09-05 | Brake friction plate position control device for new energy vehicle |
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| CN (1) | CN109099083B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075860A (en) * | 2019-12-17 | 2020-04-28 | 张和平 | Floating caliper type electromagnetic brake for new energy automobile |
| CN113734109B (en) * | 2020-05-29 | 2023-09-05 | 比亚迪股份有限公司 | Brake caliper, brake system, vehicle and brake control method |
| CN115217867A (en) * | 2022-07-15 | 2022-10-21 | 奇瑞汽车股份有限公司 | Brake caliper for vehicle, return method, and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014077811A1 (en) * | 2012-11-15 | 2014-05-22 | Otis Elevator Company | Brake |
| CN204226514U (en) * | 2014-09-23 | 2015-03-25 | 上海凯腾汽车技术有限公司 | A kind of electromagnetic braking clamp structure |
| CN206468720U (en) * | 2017-01-22 | 2017-09-05 | 杭州云乐车辆技术有限公司 | A kind of low power of dragging friction plate |
| CN107154704A (en) * | 2017-06-23 | 2017-09-12 | 浙江捷昌线性驱动科技股份有限公司 | The brake device for electrical machinery and electric pushrod of a kind of electric pushrod |
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2018
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| CN109099083A (en) | 2018-12-28 |
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