CN217926862U - Multi-cylinder synchronous piezoelectric control dynamic caliper - Google Patents
Multi-cylinder synchronous piezoelectric control dynamic caliper Download PDFInfo
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- CN217926862U CN217926862U CN202222402000.7U CN202222402000U CN217926862U CN 217926862 U CN217926862 U CN 217926862U CN 202222402000 U CN202222402000 U CN 202222402000U CN 217926862 U CN217926862 U CN 217926862U
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Abstract
The utility model discloses an automatically controlled brake caliper of multi-cylinder synchronous pressure build, including the power transmission mechanism that brake caliper body assembly, braking piece assembly, driving motor, be connected with driving motor and with power transmission mechanism with the braking piece assembly is connected and is used for converting the rotary motion from power transmission mechanism into the motion conversion mechanism of the linear motion of braking piece assembly. The utility model discloses an automatically controlled brake caliper of pressure is built in step to multi-cylinder has simple structure, can realize braking zero dragging, and transmission efficiency is high, characteristics such as brake performance is good.
Description
Technical Field
The utility model belongs to the technical field of the car braking, specifically speaking, the utility model relates to a multi-cylinder is built automatically controlled brake caliper of pressure in step.
Background
The electronic mechanical brake technology is that a motor is used as a power source of a brake system, a purely mechanical mechanism is adopted to realize motion conversion and force gain, and finally, the brake block and a brake disc are pressed tightly, so that required brake force is generated. The electromechanical brake system (EMB) has the following advantages over conventional automotive brake systems: the electronic element replaces part of mechanical elements, and the electric wire replaces all brake pipelines, so that the signal transmission speed is high, the brake response time is shortened, and the brake performance is improved; a plurality of valve elements of the brake system are omitted, so that the space is saved, and the weight is light; no brake fluid is used, and the device is simple and rapid to install, test and maintain, safe and environment-friendly; consistent with brake pedal characteristics; the electronic control unit ECU performs the integral control of the system for braking the automobile and performing centralized control, each brake is provided with a respective control unit, various electronic control functions can be added by slight improvement, and the integrated control is easy. With the development of torque motor technology and electronic control technology, an EMB electromechanical brake system as a new generation brake of an automobile will become a main development direction of automobile braking in the future.
The disc brake is a key part in an automobile safety system, and when an automobile brakes, the inner brake pad and the outer brake pad clamp a brake disc under the action of a hydraulic pushing piston to brake the automobile. After the pressure is relieved and the brake is released, if the brake pad cannot be separated from the brake disc immediately, dragging resistance is formed, energy consumption is increased, and meanwhile, the abrasion of the brake disc and the brake pad is accelerated. The dragging torque is an important technical index of the disc brake, and the traditional floating caliper has the problem of residual dragging generated by the contact of an inner brake pad and an outer brake pad with a brake disc after the brake is released. There are a variety of factors that can lead to drag problems with floating electrically controlled calipers: drag tendency can be caused by the sliding resistance of the brake pad, the sliding resistance of the caliper body and the sliding resistance of the piston, and the drag problem is difficult to completely eliminate;
the fixed electrically controlled caliper can eliminate the dragging torque problem, but in the prior art, for example, in the patent document with publication number CN114423962A, a set of motor and speed reducing mechanism needs to be separately equipped for each motion conversion mechanism, which results in a complex structure, a large number of parts and increased cost. Moreover, if motors are arranged on two sides of the brake caliper, the axial height of the brake caliper is increased, so that the brake caliper is difficult to arrange on the whole vehicle;
to sum up, the problem that automatically controlled brake caliper among the prior art exists is:
1. floating electrically controlled calipers have a variety of factors that can lead to drag problems: drag tendency can be caused by the sliding resistance of the brake pad, the sliding resistance of the caliper body and the sliding resistance of the piston, and the drag problem is difficult to completely eliminate;
2. although the fixed automatically controlled calliper can eliminate the dragging problem among the prior art, nevertheless the problem that still exists is: each motion conversion mechanism needs to be provided with a set of motor and speed reducing mechanism, and the structure is complex and the cost is high; the motors are arranged on two sides of the clamp body, and in order to reduce the axial size, the worm and gear transmission is adopted, so that the transmission efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an automatically controlled brake caliper of pressure is built in step to multi-cylinder, when the purpose realizes braking zero dragging, improves transmission efficiency.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the multi-cylinder synchronous pressure build-up electric control brake caliper comprises a brake caliper body assembly, a brake pad assembly, a driving motor, a power transmission mechanism connected with the driving motor, and motion conversion mechanisms which are connected with the power transmission mechanism and the brake pad assembly and used for converting rotary motion from the power transmission mechanism into linear motion of the brake pad assembly, wherein the motion conversion mechanisms are more than two and distributed on two opposite sides of a brake disc, and the motion conversion mechanisms distributed on the two sides of the brake disc are connected through a synchronization device.
The power transmission mechanism comprises a first transmission mechanism connected with the driving motor, and the first transmission mechanism is connected with the motion conversion mechanism.
The number of the brake pad assemblies is two, the brake pad assemblies are distributed on two sides of the brake pad, and each brake pad assembly is connected with at least one motion conversion mechanism.
The synchronous device comprises at least one synchronous connecting shaft and a coupler connected with the at least one synchronous connecting shaft, and the synchronous connecting shaft is connected with the motion conversion mechanism through a second transmission mechanism.
The second transmission mechanism is a gear transmission mechanism.
The synchronous device stretches across two sides of the brake caliper body assembly, and the synchronous connecting shaft penetrates through the brake caliper body assembly.
The first transmission mechanism comprises a speed reduction and torque increase mechanism connected with the driving motor and a transmission shaft assembly connected with the speed reduction and torque increase mechanism, and the transmission shaft assembly is rotatably arranged on the brake caliper body assembly and connected with the motion conversion mechanism.
The brake caliper body assembly comprises an inner side support, a caliper body support and an outer side support, the inner side support, the caliper body support and the outer side support are arranged in a split mode and are connected through fasteners, and the inner side support, the caliper body support and the outer side support are arranged on two sides of the brake disc.
The brake caliper body assembly further comprises a reset spring, the brake pad assembly is movably arranged on the caliper body support, the reset spring is embedded in a groove formed in the caliper body support, and the reset spring is compressed when the brake pad assembly moves.
The inner side support and the outer side support are provided with a plurality of bosses for arranging a motion conversion mechanism mounting cylinder hole and a bidirectional pressure building gear shaft mounting cylinder hole.
The motion conversion mechanism is a connecting rod transmission mechanism, a ball screw transmission mechanism or a sliding screw transmission mechanism.
The utility model discloses an automatically controlled brake caliper of pressure is built in step to multi-cylinder has simple structure, can realize braking zero dragging, and transmission efficiency is high, characteristics such as brake performance is good.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic view of the general structure of the multi-cylinder bidirectional pressure-building electric control brake caliper of the present invention;
FIG. 2 is a schematic view of a transmission shaft assembly;
FIG. 3 is an exploded view of the caliper body assembly;
labeled in the figure as: 1. a drive motor; 2. a motor shaft; 3. a drive shaft assembly; 3a, a second gear; 3b, a third gear; 3c, a transmission shaft body; 4. a fourth gear; 5. a synchronization device; 5a, synchronous connecting shafts; 5b, a coupler; 6. a motion conversion mechanism; 7. a brake disc; 8. a brake caliper body assembly; 8a, an inner bracket; 8b, a clamp body bracket; 8c, an outer bracket; 8d, a return spring; 8e, a brake pad assembly; 9. a first gear; 10. a fifth gear.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to help those skilled in the art to more fully, accurately and deeply understand the conception and the technical solution of the present invention, and to help them implement the same, by referring to the accompanying drawings and the description of the embodiments.
As shown in fig. 1 to 3, the utility model provides a multi-cylinder is built piezoelectricity in step and is controlled dynamic caliper, including the caliper body assembly 8, braking piece assembly 8e, driving motor 1, the power transmission mechanism who is connected with driving motor 1 and the motion conversion mechanism 6 who is connected with power transmission mechanism and braking piece assembly 8e and is used for converting the rotary motion from power transmission mechanism to the linear motion of braking piece assembly 8e, motion conversion mechanism 6 sets up two at least and motion conversion mechanism 6 distributes in the relative both sides of braking piece 7, the motion conversion mechanism 6 who distributes in braking piece 7 both sides passes through synchronizer 5 and connects.
Specifically, as shown in fig. 1, the driving motor 1 is located outside the caliper body assembly 8, the driving motors 1 are rotating motors, one driving motor 1 is provided, and the power transmission mechanism includes a first transmission mechanism connected to the driving motor 1, and the first transmission mechanism is connected to the motion conversion mechanism 6. The motor shaft 2 of the driving motor 1 is connected with the input end of the first transmission mechanism.
Preferably, the motion conversion mechanism 6 includes at least a rotary member that performs a rotary motion and a translational member that performs a linear motion. The motion conversion mechanism 6 is arranged in a cylinder hole of the brake caliper body assembly 8. The motion conversion mechanism 6 is used for converting input rotary motion into linear motion and pushing the brake pad assembly 8e to press the brake disc 7 to realize braking. As shown in fig. 3, two brake pad assemblies 8e are provided, two brake pad assemblies 8e are distributed on the inner side and the outer side of the brake disc 7, and each brake pad assembly 8e is connected with at least two motion conversion mechanisms 6 to ensure that the brake pad assemblies 8e run stably. The caliper body assembly 8 is provided with a plurality of cylinder holes, and each motion conversion mechanism 6 is located in one cylinder hole.
As shown in fig. 1, the synchronizing device 5 spans across the inner side and the outer side of the brake disc 7, and is connected to the motion conversion mechanisms 6 on the two sides of the caliper body assembly 8, so as to implement synchronous motion of the motion conversion mechanisms 6 on the two sides of the brake disc 7, and further implement synchronous motion of the two brake pad assemblies 8e, and control the two brake pad assemblies 8e to move in opposite directions or away from each other, thereby implementing clamping and releasing of the brake disc 7. The synchronizer 5 comprises two synchronous connecting shafts 5a and a coupling 5b for connecting the two synchronous connecting shafts 5a, and the synchronous connecting shafts 5a are connected with the motion conversion mechanism 6 through a second transmission mechanism.
As shown in fig. 1, the synchronous connecting shafts 5a are rotatably disposed on the caliper body assembly 8, the axes of the synchronous connecting shafts 5a are parallel to the axis of the brake disc 7, the coupling 5b is disposed between the two synchronous connecting shafts 5a, the two synchronous connecting shafts 5a of the synchronizer 5 are integrally connected by the coupling 5b, the two synchronous connecting shafts 5a respectively extend toward two opposite sides of the caliper body assembly 8, and the end of each synchronous connecting shaft 5a is connected to the input end of a motion conversion mechanism 6 through a second transmission mechanism.
As shown in fig. 1, the first transmission mechanism includes a speed reduction and torque increase mechanism connected to the driving motor 1 and a transmission shaft assembly 3 connected to the speed reduction and torque increase mechanism, and the transmission shaft assembly 3 is rotatably disposed on the caliper body assembly 8 and connected to the motion conversion mechanism 6. The deceleration torque-increasing mechanism is used to reduce the rotational speed of the drive motor 1 and increase its output torque. The speed reduction and torque increase mechanism comprises a first gear 9 and a second gear 3a which are meshed with each other, the first gear 9 is fixedly connected with the motor shaft 2 of the driving motor 1, and the diameter of the second gear 3a is larger than that of the first gear 9. The transmission shaft assembly 3 comprises a transmission shaft body 3c and a third gear 3b fixedly arranged on the transmission shaft body 3c, the transmission shaft body 3c is rotatably arranged on the brake caliper body assembly 8, the axis of the transmission shaft body 3c is parallel to the axis of the brake disc 7, the second gear 3a is fixedly arranged on the transmission shaft body 3c, and the third gear 3b is positioned between the second gear 3a and the brake caliper body assembly 8.
As shown in fig. 1, in the present embodiment, the second transmission mechanisms are gear transmission mechanisms, the number of the second transmission mechanisms is the same as that of the motion conversion mechanisms 6, and each of the synchronization connection shafts 5a is connected to the input end of one of the motion conversion mechanisms 6 through one of the second transmission mechanisms, respectively. The second transmission mechanism comprises a fourth gear 4 and a fifth gear 10 which are meshed with each other, the fifth gear 10 is fixedly arranged on the synchronous connecting shaft 5a, and the fourth gear 4 is fixedly connected with the input end of the motion conversion mechanism 6. The driving motor 1, the first transmission mechanism and a part of the second transmission mechanism are located on the same side of the brake caliper body assembly 8, the third gear 3b is meshed with the fourth gear 4 of the part of the second transmission mechanism, the diameter of the fourth gear 4 is larger than that of the third gear 3b, and the transmission mechanism formed by meshing the third gear 3b and the fourth gear 4 plays a role in reducing speed and increasing torque. After the driving motor 1 operates, the first transmission mechanism drives the second transmission mechanism located on one side of the brake caliper body assembly 8 to operate, and the second transmission mechanism of the part drives the second transmission mechanism located on the other side of the brake caliper body assembly 8 to operate through the synchronization device 5, so that the synchronous operation of all the motion conversion mechanisms 6 can be realized.
As shown in fig. 1 and 3, the caliper body assembly 8 includes an inner bracket 8a, a caliper body bracket 8b, and an outer bracket 8c, the inner bracket 8a, the caliper body bracket 8b, and the outer bracket 8c are separately disposed, the inner bracket 8a, the caliper body bracket 8b, and the outer bracket 8c are connected by fasteners, and the inner bracket 8a and the outer bracket 8c are disposed on two sides of the brake disc 7. The caliper body support 8b is positioned between the inner support 8a and the outer support 8c, and the caliper body support 8b is rigidly mounted on a steering knuckle (not shown in the drawing) of the automobile through a bolt, so that the brake caliper body assembly 8 realizes the automobile braking function.
Two synchronous connecting shafts 5a of the synchronizer 5 are rotatably arranged on an inner side bracket 8a and an outer side bracket 8c respectively, first mounting bosses are arranged on the inner side bracket 8a and the outer side bracket 8c, the two synchronous connecting shafts 5a of the synchronizer 5 penetrate through the first mounting bosses arranged on the inner side bracket 8a and the outer side bracket 8c respectively, and the fifth gear 10 is positioned outside the first mounting bosses. The motion conversion mechanism 6 is provided on the inside bracket 8a and the outside bracket 8c, a plurality of second mounting bosses are provided on the inside bracket 8a and the outside bracket 8c, cylinder holes are provided in the second mounting bosses, and the fourth gear 4 is located outside the second mounting bosses. The coupler 5b of the synchronizer 5 is positioned between the inner bracket 8a and the outer bracket 8c, and the transmission shaft assembly 3 is rotatably arranged on the inner bracket 8a or the outer bracket 8 c.
As shown in fig. 1 and fig. 3, the brake caliper body assembly 8 further includes a return spring 8d, the two brake pad assemblies 8e are movably disposed on the caliper body support 8b, the return spring 8d is embedded in a groove disposed on the caliper body support 8b, the brake pad assemblies 8e compress the return spring 8d when moving, and the return spring 8d is used for returning the brake pad assemblies 8 e. The inner brake disc assembly 8e and the outer brake disc assembly 8e are symmetrically and evenly distributed on two sides of the brake disc 7, the two brake disc assemblies 8e are overlapped and installed in the groove of the caliper body support 8b, and the two brake disc assemblies 8e can slide along the groove of the caliper body support 8 b.
Preferably, the motion conversion mechanism 6 is a link transmission mechanism, a ball screw transmission mechanism or a sliding screw transmission mechanism, and realizes motion conversion to convert rotary motion into linear motion; the motion conversion mechanism 6 transmits the motion to the inner brake pad assembly 8e and the outer brake pad assembly 8e, pushes the inner brake pad assembly 8e to press the brake disc 7 at the same time, and tightly presses the brake disc 7 to generate brake force, so that the synchronous pressure build-up of the inner side and the outer side of the brake disc 7 is realized.
The working principle of the electric control brake caliper is as follows:
when braking is carried out, the driving motor 1 runs, the motion conversion mechanism 6 positioned on the inner side of the brake caliper body assembly 8 is driven to run through the first transmission mechanism, the motion conversion mechanism 6 positioned on the inner side drives the motion conversion mechanism 6 positioned on the outer side of the brake caliper body assembly 8 to run synchronously through the synchronization device 5, the motion conversion mechanism 6 converts the rotary motion input by the gear into linear motion, then the motion is transmitted to the inner brake pad assembly 8e and the outer brake pad assembly 8e, and the inner brake pad assembly 8e and the outer brake pad assembly 8e are pushed to press the brake disc 7 so as to be tightly pressed with the brake disc 7, so that braking force is generated;
when the brake is released, the driving motor 1 runs in the reverse direction, the motion conversion mechanism 6 located on the inner side of the brake caliper body assembly 8 is driven to run through the first transmission mechanism, the motion conversion mechanism 6 located on the inner side drives the motion conversion mechanism 6 located on the outer side of the brake caliper body assembly 8 to run synchronously through the synchronization device 5, the motion conversion mechanism 6 converts the rotation motion input by the gear into linear motion, the motion conversion mechanism 6 moves in the reverse direction to be separated from the inner brake pad assembly 8e and the outer brake pad assembly 8e, and the inner brake pad assembly 8e and the outer brake pad assembly 8e return to the original positions through the return spring 8d and are released from the brake disc 7.
The electronic control brake caliper with the structure has the following advantages:
1. there are multiple factors that can lead to the problem of dragging in current floating automatically controlled calliper: the dragging tendency is caused by the sliding resistance of the clamp body, and the dragging problem is difficult to completely eliminate; the fixed electric control calipers of the utility model can realize zero dragging of braking;
2. the transmission efficiency is high by adopting all-gear transmission; only a single motor and a speed reducing mechanism are arranged, multi-cylinder synchronous action is realized through the synchronizer 5, and the structure is relatively simple.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical scheme of the utility model can be directly applied to other occasions, all within the protection scope of the utility model.
Claims (11)
1. Multi-cylinder builds automatically controlled brake caliper of pressure in step, including brake caliper body assembly, braking piece assembly and driving motor, its characterized in that: the brake disc assembly is characterized by further comprising a power transmission mechanism connected with the driving motor and a motion conversion mechanism connected with the power transmission mechanism and the brake disc assembly and used for converting rotary motion from the power transmission mechanism into linear motion of the brake disc assembly, the motion conversion mechanisms are more than two and distributed on two opposite sides of the brake disc, and the motion conversion mechanisms distributed on two sides of the brake disc are connected through a synchronization device.
2. The multi-cylinder synchronous pressure-building electric control brake caliper according to claim 1, characterized in that: the power transmission mechanism comprises a first transmission mechanism connected with the driving motor, and the first transmission mechanism is connected with the motion conversion mechanism.
3. The multi-cylinder synchronous pressure-building electric control brake caliper according to claim 2, characterized in that: the number of the brake pad assemblies is two, the brake pad assemblies are distributed on two sides of the brake pad, and each brake pad assembly is connected with at least one motion conversion mechanism.
4. The multi-cylinder synchronous pressure-building electric control brake caliper according to claim 3, characterized in that: the synchronous device comprises at least one synchronous connecting shaft and a coupler connected with the at least one synchronous connecting shaft, and the synchronous connecting shaft is connected with the motion conversion mechanism through a second transmission mechanism.
5. The multi-cylinder synchronous pressure build electric control brake caliper of claim 4, characterized in that: the second transmission mechanism is a gear transmission mechanism.
6. The multi-cylinder synchronous pressure build electric control brake caliper of claim 4, characterized in that: the synchronous device stretches across two sides of the brake caliper body assembly, and the synchronous connecting shaft penetrates through the brake caliper body assembly.
7. The multi-cylinder synchronous pressure build electric control brake caliper according to any one of claims 2 to 6, characterized in that: the first transmission mechanism comprises a speed reduction and torque increase mechanism connected with the driving motor and a transmission shaft assembly connected with the speed reduction and torque increase mechanism, and the transmission shaft assembly is rotatably arranged on the brake caliper body assembly and connected with the motion conversion mechanism.
8. The multi-cylinder synchronous pressure-building electric control brake caliper according to any one of claims 1 to 6, characterized in that: the brake caliper body assembly comprises an inner side support, a caliper body support and an outer side support, the inner side support, the caliper body support and the outer side support are arranged in a split mode and are connected through fasteners, and the inner side support, the caliper body support and the outer side support are arranged on two sides of the brake disc.
9. The multi-cylinder synchronous pressure build electric control brake caliper of claim 8, characterized in that: the brake caliper body assembly further comprises a reset spring, the brake pad assembly is movably arranged on the caliper body support, the reset spring is embedded in a groove formed in the caliper body support, and the reset spring can be compressed when the brake pad assembly moves.
10. The multi-cylinder synchronous pressure build electric control brake caliper of claim 8, characterized in that: the inner side support and the outer side support are provided with a plurality of bosses for arranging a motion conversion mechanism mounting cylinder hole and a bidirectional pressure build gear shaft mounting cylinder hole.
11. The multi-cylinder synchronous pressure build electric control brake caliper according to any one of claims 1 to 6, characterized in that: the motion conversion mechanism is a connecting rod transmission mechanism, a ball screw transmission mechanism or a sliding screw transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222402000.7U CN217926862U (en) | 2022-09-09 | 2022-09-09 | Multi-cylinder synchronous piezoelectric control dynamic caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222402000.7U CN217926862U (en) | 2022-09-09 | 2022-09-09 | Multi-cylinder synchronous piezoelectric control dynamic caliper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217926862U true CN217926862U (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222402000.7U Active CN217926862U (en) | 2022-09-09 | 2022-09-09 | Multi-cylinder synchronous piezoelectric control dynamic caliper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217926862U (en) |
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2022
- 2022-09-09 CN CN202222402000.7U patent/CN217926862U/en active Active
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