CN219413345U - Electronic parking brake caliper - Google Patents
Electronic parking brake caliper Download PDFInfo
- Publication number
- CN219413345U CN219413345U CN202320841866.XU CN202320841866U CN219413345U CN 219413345 U CN219413345 U CN 219413345U CN 202320841866 U CN202320841866 U CN 202320841866U CN 219413345 U CN219413345 U CN 219413345U
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- friction plate
- cylinder hole
- piston
- connector
- electronic parking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The utility model discloses an electronic parking brake caliper, wherein a first cylinder hole, a second cylinder hole and a third cylinder hole which are communicated are formed in a caliper body, the caliper body is provided with a first friction plate and a second friction plate, and a spring is arranged between the first friction plate and the second friction plate; the floating part comprises a floating main body, a braking piston and a driving assembly for driving the braking piston to move, wherein a claw part of the floating main body stretches into the clamp body to act on the outer side of the second friction plate, the braking piston is arranged in the third cylinder hole and acts on the first friction plate, and the fixed clamp part comprises a first piston and a second piston which are respectively arranged in the first cylinder hole and the second cylinder hole and act on the first piston and the second friction plate respectively. When parking is braked, the driving component drives the brake piston to push the first friction plate, and the claw part of the floating main body pushes the second friction plate, so that braking is realized; when the vehicle brakes, the brake fluid pushes the first piston, the second piston and the brake piston, and finally the side wall of the brake disc of the first friction plate and the side wall of the brake disc of the second friction plate are contacted, so that high-efficiency braking is realized.
Description
Technical Field
The utility model relates to an improved utility model of an electronic parking brake assembly, in particular to an electronic parking brake caliper.
Background
Electronic parking brake systems typically include a hydraulic service brake system and an electronic parking brake system, with the service brake system and the parking brake system operating separately. The electronic parking brake system includes one or more brake pistons and friction plates located on each side of the brake rotor; during service braking operations, the opposing brake pistons move relative to each other, which moves the opposing friction plates into contact with both sides of the brake disc, thereby creating a clamping force that slows or stops or maintains the running vehicle in a stopped state; after the braking is released, the springs between the friction plates rebound to push the friction plates to reset, and the friction plates are separated from the brake disc.
The brake assembly in the current market adopts an integral multi-piston structure, integrates an electronic parking brake system and a service brake system, but the brake pistons of the service brake and the parking brake still keep independent operation, and the problems of more brake pistons and poor braking effect occur; there are also some problems: 1. the brake assembly adopts an external oil pipe, so that the service life is short, and the potential safety hazard is large; 2. the strength and stability of the reset spring are weak, and the service life is short; 3. the electronic parking braking system and the caliper body are movably arranged, so that rotation is easy to occur in driving, and the driving performance is influenced.
Disclosure of Invention
In view of the technical problems existing in the background art, the technical problems solved by the utility model are to provide the electronic parking brake caliper with a simple structure and a good braking effect.
In order to solve the technical problems, the utility model adopts the following technical scheme: this kind of electron parking brake caliper, its characterized in that: comprises the following steps of
The pliers body is internally provided with a first cylinder hole, a second cylinder hole and a third cylinder hole, the three cylinder holes are communicated with an oil liquid channel, the first cylinder hole and the second cylinder hole are correspondingly arranged left and right, the pliers body is provided with a first friction plate and a second friction plate which are correspondingly arranged left and right, and a spring is arranged between the first friction plate and the second friction plate;
a floating member comprising
The floating main body comprises a connector and a connecting arm, the connecting arm is connected with the connector, the claw part of the connecting arm stretches into the clamp body to act on the outer side of the second friction plate,
a brake piston provided in the third cylinder hole and acting on the outer side of the first friction plate,
the driving assembly drives the brake piston to move towards the first friction plate in the third cylinder hole, and a motor of the driving assembly is arranged on the connecting head;
and the fixed clamp part comprises a first piston and a second piston which are respectively arranged in the first cylinder hole and the second cylinder hole, wherein the first piston acts on the outer side of the first friction plate, and the second piston acts on the outer side of the second friction plate.
When parking braking, the motor is started, the driving assembly drives the brake piston to move towards the first friction plate, the brake piston pushes the first friction plate, the first friction plate is in contact with the brake disc, the brake piston pushes the first friction plate to meet resistance and generate reaction force, the reaction force pushes the floating main body to move relative to the caliper body, the floating main body and the brake piston move in opposite directions, so that the claw part of the connecting arm pushes the second friction plate, the first friction plate and the second friction plate move towards the brake disc and are in contact with the braking surface of the brake disc, and the generated clamping force enables the brake disc to stop rotating; when the vehicle brakes, the pressure of the oil liquid channel is increased, the brake liquid pushes the first piston, the second piston and the brake piston to move towards the brake disc, and finally the first friction plate and the second friction plate move towards the brake disc and are in contact with the braking surface of the brake disc, so that the generated clamping force stops the rotation of the brake disc, and complete and efficient braking is realized.
Preferably, the driving assembly further comprises a screw rod axially arranged relative to the third cylinder hole and a screw sleeve in threaded connection with the screw rod, the screw rod is rotatably arranged on the connecting head and connected with the motor, and the screw sleeve extends into the third cylinder hole and acts on the brake piston. The motor drives the screw rod to rotate, and the connector limits the screw rod to axially move, so that the threaded sleeve axially moves relative to the screw rod, and then the brake piston can be pushed to axially move.
Preferably, the pliers body is provided with a mounting opening, the mounting opening is extended with a connecting ring, the mounting end of the connector is inserted into the inner hole of the connecting ring, and the mounting end of the connector is matched with the inner hole of the connecting ring. The connecting ring increases the guide length of the clamp body mounting opening, when the friction plate is worn, the mounting end of the connector floats outside the clamp body, the mounting end of the connector can still be ensured to be in the clamp body, and the gap between the friction plate and the brake disc is ensured to be in the designed gap range.
Preferably, a sealing ring is arranged between the connector and the connecting ring. The tightness of the floating body and the clamp body is improved, and the functions of dust prevention, water prevention and active return are achieved.
Preferably, the clamp body is provided with a stop pin, the connector is provided with a limit hole corresponding to the stop pin, or the connector is provided with the stop pin, and the clamp body is provided with a corresponding limit hole; the stop pin is inserted into the limit hole. The rotation of the floating body relative to the caliper body is limited by the arrangement of the rotation stop pin, so that the braking is more stable.
Preferably, the connector is made of 45 # steel, and the connecting arm is made of aluminum alloy. The steel 45 has higher strength, plasticity and wear resistance, and the connector slides stably relative to the pliers body and has long service life; the aluminum alloy material is light in weight, so that the whole weight of the floating body is light, and the floating body can move easily.
Preferably, the spring comprises a body, wherein two ends of the body are symmetrically provided with an installation clamping groove, two supporting feet and two supporting rods, the clamping groove is in clamping connection with an installation shaft on the clamp body, and the two supporting feet and the two supporting rods are arranged in bilateral symmetry and respectively act on the inner side of the first friction plate and the inner side of the second friction plate. The clamping and the installation are convenient and quick; the dual function of the supporting feet and the supporting rods ensures that the force acting on the first friction plate and the second friction plate is more uniform and the reset is more stable when the springs are reset.
Preferably, the spring comprises a body, the middle position of the body is sunken, the sunken part is sunken, and the sunken part and the body form a step shape. Compared with the other surface of the body, the concave part is a convex part, and the middle part of the body is stepped, so that the effect of enhancing the structural strength of the spring is achieved, and the service life of the spring is prolonged.
Preferably, the oil liquid channel is arranged in the pliers body, the pliers body is provided with an oil inlet, the oil inlet is provided with a sealing cover, and the oil inlet is communicated with the oil liquid channel. The built-in oil liquid channel is not easy to damage and age, so that the use is safer; and the appearance of the brake assembly is more attractive.
Drawings
Fig. 1 is a top view of the present utility model.
Fig. 2 is a cross-sectional view 1 of the present utility model.
Fig. 3 is a cross-sectional view 2 of the present utility model.
Fig. 4 is a partial cross-sectional view of the present utility model.
Description of the embodiments
The details and working principles of the embodiments and examples of the present utility model are described below with reference to the drawings. The electronic parking brake caliper comprises a caliper body 2, a floating part 1 and a fixed caliper part 35, wherein a first cylinder hole 11, a second cylinder hole 12 and a third cylinder hole 13 are formed in the caliper body 2, the three cylinder holes are communicated with an oil liquid channel 14, brake liquid is arranged in the oil liquid channel 14, the first cylinder hole 11, the second cylinder hole 12 and the third cylinder hole 13, and the oil liquid channel 14 is communicated with a service brake oil pipe. The first cylinder hole 11 and the second cylinder hole 12 are correspondingly arranged left and right, the first cylinder hole 11, the second cylinder hole 12 and the third cylinder hole 13 can be arranged in one group or a plurality of groups, the first cylinder hole 11 and the second cylinder hole 12 can be arranged at the front end, the rear end and the middle position of the clamp body 2, and the third cylinder hole 13 can be arranged at the front end, the rear end and the middle position of the clamp body 2; in the figure, the third cylinder hole 13 is provided at the front end of the caliper body 2, and the first cylinder hole 11 and the second cylinder hole 12 are provided at the rear end of the caliper body 2. The front end and the rear end of the pliers body 2 are not limited to the positions set in the drawings, for example, the first cylinder hole 11 and the second cylinder hole 12 are on the right side in fig. 2, the third cylinder hole 13 is on the left side, the drawings can be modified to the first cylinder hole 11 and the second cylinder hole 12 are on the left side, and the third cylinder hole 13 is on the right side, but for convenience of description, the positions set in fig. 1 are described below, the X axis is the front-rear direction, the arrow direction is the front, the Y axis is the left-right direction, and the arrow direction is the right side.
The pliers body 2 is provided with a first friction plate 5 and a second friction plate 6 which are correspondingly arranged left and right, and a spring 7 is arranged between the first friction plate 5 and the second friction plate 6; the floating component 1 comprises a floating main body 20, a brake piston 10 and a driving component 32, the floating main body 20 comprises a connector 3 and a connecting arm 4, the connecting arm 4 is connected with the connector 3, a claw portion 15 of the connecting arm 4 stretches into the clamp body 2 and acts on the outer side of the front end of the second friction plate 6, the brake piston 10 is arranged in a third cylinder hole 13 and acts on the outer side of the front end of the first friction plate 5, the driving component 32 drives the brake piston 10 to axially move towards the first friction plate 5 in the third cylinder hole 13, and a motor of the driving component 32 is arranged on the connector 3.
The driving assembly 32 further comprises a screw rod 17 axially arranged relative to the third cylinder hole 13 and a screw sleeve 16 in threaded connection with the screw rod 17, a cavity 18 for installing the screw rod 17 and the screw sleeve 16 is arranged in the connector 3, the cavity 18 is communicated with the third cylinder hole 13, the screw rod 17 is rotatably arranged on the connector 3, the screw rod 17 is connected with a motor, the screw sleeve 16 extends into the third cylinder hole 13 and acts on the brake piston 10, when the motor positively rotates to drive the screw rod 17 to rotate, the connector 3 limits the screw rod 17 to axially move, so that the screw sleeve 16 axially moves relative to the screw rod 17, and then the screw sleeve 16 pushes the brake piston 10 to move towards a brake disc, and a brake disc is not shown in the figure. When the utility model is used, the first friction plate 5 and the second friction plate 6 are arranged on two sides of the brake disc, and when the utility model is not braked, the first friction plate 5 and the second friction plate 6 have a gap with the brake disc.
The fixed jaw 35 comprises a first piston 8 and a second piston 9 respectively arranged in a first cylinder hole 11 and a second cylinder hole 12, and brake fluid in the cylinder holes can push the first piston 8 and the second piston 9 to axially move, so that the first piston 8 acts on the outer side of the rear end of the first friction plate 5, and the second piston 9 acts on the outer side of the rear end of the second friction plate 6.
When the electronic parking brake is applied, the motor is started, the driving screw 17 rotates, so that the screw sleeve 16 moves towards the brake piston 10 and pushes the brake piston 10 to move towards the first friction plate 5, the brake piston 10 pushes the front end of the first friction plate 5, the first friction plate 5 contacts with the right braking surface of the brake disc, the brake piston 10 pushes the first friction plate 5 to encounter resistance and generate a reaction force, the reaction force pushes the floating main body 20 to move relative to the caliper body 2, the floating main body 20 moves in the opposite direction to the brake piston 10, the claw 15 of the connecting arm 4 pushes the front end of the second friction plate 6, the second friction plate 6 contacts with the left braking surface of the brake disc, and thus, the front end and the rear end of the first friction plate 5 and the second friction plate 6 both move towards the brake disc and contact with the braking surface of the brake disc, and the generated clamping force enables the brake disc to stop rotating; when stopping braking is needed, the motor rotates reversely, the screw sleeve 16 retreats, and the spring 7 is reset at the moment to push the first friction plate 5 and the second friction plate 6 to return to the initial positions.
When the vehicle brakes, the brake is stepped on by foot, brake fluid in the vehicle brake oil pipe is pushed to enter the first cylinder hole 11, the second cylinder hole 12 and the third cylinder hole 13, the brake fluid pushes the first piston 8, the second piston 9 and the brake piston 10 to move towards the brake disc, the brake piston 10 pushes the first friction plate 5 to contact with the brake disc, the generated reaction force also pushes the floating main body 20 to move relative to the caliper body 2, so that the claw 15 of the connecting arm 4 pushes the front end of the second friction plate 6, and thus the front end and the rear end of the first friction plate 5 and the second friction plate 6 move towards the brake disc and contact with the brake disc braking surface, and complete and efficient braking is finally realized. When the brake is released, the brake fluid is retracted, the first piston 8, the second piston 9 and the brake piston 10 are retracted and reset, and at the moment, the spring 7 is reset to push the first friction plate 5 and the second friction plate 6 to return to the initial positions.
The clamp body 2 is provided with a stop pin 28, the connector 3 is provided with a limit hole 33 corresponding to the stop pin 28, or the connector 3 is provided with the stop pin 28, and the clamp body 2 is provided with a corresponding limit hole 33; the stop pin 28 is inserted into the limit hole 33, and the stop pin 28 limits the rotation of the floating body 20 relative to the caliper body 2, so that the braking is smoother. The pliers body 2 is provided with a mounting opening 30, the mounting opening 30 is extended with a connecting ring 29, the mounting end of the connector 3 is inserted into an inner hole of the connecting ring 29, the mounting end 31 of the connector 3 is matched with the inner hole of the connecting ring 29 in a sliding fit manner, and the mounting opening 30 and the connecting ring 3 play a role in guiding the movement of the floating body 20; the connector 3 is made of a No. 45 steel material, the No. 45 steel material has higher strength, plasticity and wear resistance, and the surface of the connector 3 processed by the No. 45 steel material is smooth, and the connector is stable in sliding relative to the pliers body 2 and is not easy to wear; the connecting arm 4 is made of aluminum alloy, and the aluminum alloy is light in weight, so that the whole weight of the floating body 20 is light, and the floating body 20 is beneficial to floating. A sealing ring 19 is arranged between the connector 3 and the connecting ring 29, the sealing ring can increase the tightness of the floating body 20 and the clamp body 2, the functions of dust prevention, water prevention and active return are achieved, and the floating body 20 floats to enable the sealing ring to axially deform during braking; after braking is finished, the elastic force of the sealing ring can also act on the floating body 20, so that the floating body actively returns. The setting of go-between 29 then has increased the direction length of the installation mouth 30 of the pincers body 2, and when wearing and tearing appear in the friction disc, when the installation end of connector 3 was floated outward to the pincers body 2, when the figure was floated to the right, because of installation length and the direction length of the pincers body 2 are enough long, can guarantee that the installation end of connector 3 is in the pincers body 2, guarantees that the clearance between friction disc and the brake disc is in the clearance scope of design.
The spring 7 comprises a body, wherein mounting clamping grooves 26, two supporting feet 24 and two supporting rods 23 are symmetrically arranged at two ends of the body, namely four supporting feet 24 and four supporting rods 23, the two supporting feet 24 and the two supporting rods 23 are symmetrically arranged left and right and respectively act on the inner side of the first friction plate 5 and the inner side of the second friction plate 6, and the force acting on the first friction plate 5 and the second friction plate 6 when the spring 7 resets is more uniform and the resetting is more stable; the clamping groove 26 is clamped with the mounting shaft 22 on the clamp body 2, in order to increase clamping stability, the body extends to the clamping groove 26 to form a limiting piece 27, the limiting piece 27 has a certain limiting effect on the mounting shaft 22, the mounting shaft 22 enters the clamping groove 26 through extruding the limiting piece 27, and after entering the clamping groove 26, the blocking of the limiting piece 27 prevents the mounting shaft 22 from being separated from the clamping groove 26; the middle position of the body is concave, the concave part is a concave part 25, the concave part 25 and the body form a step shape, the concave part 25 is a convex part for the other surface of the body, and the middle position of the body forms a step shape, thereby playing the role of enhancing the structural strength of the spring 7 and prolonging the service life of the spring 7. The oil liquid channel 14 is arranged in the clamp body 2, the clamp body 2 is provided with an oil inlet 21, the oil inlet 21 is provided with a sealing cover 34, the oil inlet 21 is communicated with the oil liquid channel 14, the built-in oil liquid channel 14 is not easy to damage and age, the use is safer, and the appearance of the brake assembly is more attractive.
Claims (9)
1. An electronic parking brake caliper, characterized in that: comprises the following steps of
The pliers body is internally provided with a first cylinder hole, a second cylinder hole and a third cylinder hole, the three cylinder holes are communicated with an oil liquid channel, the first cylinder hole and the second cylinder hole are correspondingly arranged left and right, the pliers body is provided with a first friction plate and a second friction plate which are correspondingly arranged left and right, and a spring is arranged between the first friction plate and the second friction plate;
a floating member comprising
The floating main body comprises a connector and a connecting arm, the connecting arm is connected with the connector, the claw part of the connecting arm stretches into the clamp body to act on the outer side of the second friction plate,
a brake piston provided in the third cylinder hole and acting on the outer side of the first friction plate,
the driving assembly drives the brake piston to move towards the first friction plate in the third cylinder hole, and a motor of the driving assembly is arranged on the connecting head;
and the fixed clamp part comprises a first piston and a second piston which are respectively arranged in the first cylinder hole and the second cylinder hole, wherein the first piston acts on the outer side of the first friction plate, and the second piston acts on the outer side of the second friction plate.
2. The electronic parking brake caliper of claim 1, wherein: the driving assembly further comprises a screw rod axially arranged relative to the third cylinder hole and a screw sleeve in threaded connection with the screw rod, the screw rod is rotatably arranged on the connecting head and connected with the motor, and the screw sleeve stretches into the first cylinder hole and acts on the brake piston.
3. The electronic parking brake caliper of claim 1, wherein: the pliers body is provided with a mounting opening, the mounting opening extends to form a connecting ring, the mounting end of the connector is inserted into the inner hole of the connecting ring, and the mounting end of the connector is matched with the inner hole of the connecting ring.
4. An electronic parking brake caliper according to claim 3, characterized in that: and a sealing ring is arranged between the connector and the connecting ring.
5. The electronic parking brake caliper of claim 1, wherein: the pliers body is provided with a stop pin, the connector is provided with a limit hole corresponding to the stop pin, or the connector is provided with the stop pin, and the pliers body is provided with a corresponding limit hole; the stop pin is inserted into the limit hole.
6. The electronic parking brake caliper of claim 1, wherein: the connector is made of 45 # steel materials, and the connecting arm is made of aluminum alloy materials.
7. The electronic parking brake caliper of claim 1, wherein: the spring comprises a body, wherein two ends of the body are symmetrically provided with an installation clamping groove, two supporting feet and two supporting rods, the clamping groove is connected with the clamp body through an installation shaft in a clamping mode, and the two supporting feet and the two supporting rods are symmetrically arranged left and right and respectively act on the inner side of the first friction plate and the inner side of the second friction plate.
8. The electronic parking brake caliper of claim 1, wherein: the spring comprises a body, wherein the middle position of the body is sunken, the sunken part is sunken, and the sunken part and the body form a step shape.
9. The electronic parking brake caliper of claim 1, wherein: the oil liquid channel is arranged in the pliers body, an oil inlet is arranged on the pliers body, a sealing cover is arranged on the oil inlet, and the oil inlet is communicated with the oil liquid channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320841866.XU CN219413345U (en) | 2023-04-17 | 2023-04-17 | Electronic parking brake caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320841866.XU CN219413345U (en) | 2023-04-17 | 2023-04-17 | Electronic parking brake caliper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219413345U true CN219413345U (en) | 2023-07-25 |
Family
ID=87236585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320841866.XU Active CN219413345U (en) | 2023-04-17 | 2023-04-17 | Electronic parking brake caliper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219413345U (en) |
-
2023
- 2023-04-17 CN CN202320841866.XU patent/CN219413345U/en active Active
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