CN113280063A - Coaxial direct-drive electronic parking actuator - Google Patents
Coaxial direct-drive electronic parking actuator Download PDFInfo
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- CN113280063A CN113280063A CN202110662787.8A CN202110662787A CN113280063A CN 113280063 A CN113280063 A CN 113280063A CN 202110662787 A CN202110662787 A CN 202110662787A CN 113280063 A CN113280063 A CN 113280063A
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- gear
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- planet
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- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 6
- 210000000080 chela (arthropods) Anatomy 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
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Classifications
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/14—Mechanical
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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
- F16D2121/24—Electric or magnetic using motors
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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
- F16D2123/00—Multiple operation forces
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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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/46—Rotating members in mutual engagement
- F16D2125/50—Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Retarders (AREA)
Abstract
The invention discloses a coaxial direct-drive electronic parking actuator, and relates to the field of vehicle parking braking. The motor is connected with the gear box, the axis of the motor is overlapped, and the power output end of the motor is connected with motor shaft teeth; the gear box comprises a primary gear, a planet carrier, a secondary gear, an output disc and a gear ring, wherein the top end of the gear ring is connected with a motor, the primary gear is meshed with the teeth of a motor shaft, the planet carrier is provided with a first planet shaft, the primary gear is rotationally connected with the first planet shaft, the planet carrier is provided with a transmission gear, the secondary gear is meshed with the transmission gear, the output disc is provided with a second planet shaft, the secondary gear is rotationally connected with the second planet shaft, and the inner surface of the gear ring is provided with an inner gear ring matched with the primary gear and the secondary gear. The invention has high assembly precision, the motor directly drives the gear box to reduce speed and output torque, and the transmission efficiency is high; the actuator is not limited by the outer dimension of the cylinder diameter of the brake caliper, and is suitable for brake calipers with various dimensions.
Description
Technical Field
The invention relates to the field of vehicle parking braking, in particular to a coaxial direct-drive electronic parking actuator.
Background
The electronic parking EPB is a technology for realizing parking braking by an electronic control method. The electronic hand brake is a technology for realizing parking brake in an electronic control mode.
The traditional electronic parking brake system has two motor executing mechanisms, one is that a hand brake pull handle is removed on the basis of the traditional hand brake pull wire parking, a motor lead screw nut transmission mechanism is used for replacing a handle to apply a pull rope force to a brake, and the other is a caliper type electronic parking brake.
The caliper electric parking brake is assembled directly to the brake caliper and the brake and caliper are then mounted together to the axle rim. The caliper type electronic parking brake directly transmits braking force to a brake caliper and a brake system without a parking pull wire, is convenient to install and easy to operate, is adopted by most vehicles at present, and is a widely recommended electronic parking form.
The actuating mechanisms of the caliper type electronic parking brake applied at present are all parallel shaft transmission, the transmission mode adopts belt transmission or transition gear transmission, the two transmission modes are low in efficiency and inaccurate in positioning, particularly, the belt transmission cannot bear large output torque, and cannot meet the requirement of a braking system or a vehicle type with large braking force, and the parallel shaft transmission can limit the range of the cylinder diameter of a caliper and cannot meet the use requirement of the caliper with large cylinder diameter.
Therefore, it is necessary to provide a coaxial direct-drive electronic parking actuator which directly drives a gear box by a motor to perform speed reduction and torque output and solves the problem of applicability of calipers with large cylinder diameters.
Disclosure of Invention
In order to solve the technical problems, the invention adopts the following technical scheme:
a coaxial direct-drive electronic parking actuator comprises a motor and a gear box, wherein the motor is fixedly connected with the gear box, the axis of the motor is overlapped, and the power output end of the motor is fixedly connected with motor shaft teeth;
the gear box includes one-level gear, planet carrier, secondary gear, output dish and ring gear, the ring gear top with motor fixed connection, one-level gear with motor shaft tooth meshing, the planet carrier upper surface is provided with first planet axle, one-level gear with first planet axle rotates to be connected, the planet carrier bottom is provided with drive gear, the secondary gear with drive gear meshing, output dish top is provided with the second planet axle, the secondary gear with second planet axle rotates to be connected, the ring gear internal surface be provided with one-level gear with secondary gear complex inner ring gear, one-level gear with the secondary gear respectively with inner ring gear meshing.
Further, the motor bottom is provided with the boss, the ring gear top be provided with boss complex recess, the boss with from the top down has set gradually sealing washer and protective pad piece between the recess.
Furthermore, the primary gears and the secondary gears are respectively provided with three gears, the three primary gears are respectively meshed with the motor shaft teeth, and the three secondary gears are respectively meshed with the transmission gears.
Further, the motor casing outside is provided with connecting portion, the inside insulating layer that is provided with of connecting portion, connecting portion with the motor adopts cast aluminium or punching press mode integrated into one piece.
Further, the shaft of the motor and the motor shaft teeth are integrally formed.
Furthermore, a brake caliper is fixedly connected to the bottom end of the gear ring, an external spline is arranged in the center of the top end of the brake caliper, an internal spline is arranged in the center of the bottom end of the output disc, and the external spline is installed in the internal spline.
Further, a brake caliper seal ring is provided, and the brake caliper seal ring is mounted between the ring gear and the brake caliper.
Further, the gear ring bottom is provided with the mounting hole, install the bush in the mounting hole.
The invention has the beneficial effects that:
1. the motor shell is directly fixedly connected with the gear box, the installation concentricity of the motor and the gear box is ensured, the motor directly drives the gear box to decelerate and output torque through a coaxial direct-drive transmission mode, other transition transmission modes are not needed, the efficiency and the service life of gear transmission can be improved, and the working noise of the system is reduced.
2. The problem of the suitability of big cylinder diameter calliper can be solved, compare in traditional area connection or chain connection, the coaxial transmission mode of directly driving is not restricted by the outside dimension of brake caliper cylinder diameter, is applicable to the braking pincers of various sizes.
3. The motor outside is provided with connecting portion, prevents at connecting portion that the pencil that links to each other with the motor can improve the security, and motor and connecting portion formula structure as an organic whole, and motor casing adopts die-casting or punching press mode integrated into one piece, has improved the leakproofness of device greatly when having realized the lightweight.
4. The gear box and the motor are designed into completely independent modules, and different matching combinations can be carried out according to requirements.
Drawings
Fig. 1 is a cross-sectional view of a coaxial direct-drive electronic parking actuator according to the present invention.
Fig. 2 is an exploded view of a coaxial direct-drive electronic parking actuator according to the present invention.
Fig. 3 is a schematic diagram of the coaxial direct-drive electronic parking actuator and a brake caliper in cooperation.
Fig. 4 is a schematic diagram of an output disc of a coaxial direct-drive electronic parking actuator according to the present invention.
Wherein, in the figure:
1-a motor; 11-a connecting portion; 12-motor shaft teeth; 2-a set screw; 3-sealing ring; 4-a protective gasket; 5-a gear box; 51-primary gear; 52-planet carrier; 53-secondary gear; 54-an output tray; 55-a gear ring; 6-brake caliper sealing ring; 7-a bushing; 8-internal splines; 9-external splines; 10-a brake caliper; 521-a first planet axis; 541-second planet axis.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a coaxial direct-drive electronic parking actuator with reference to fig. 1 to 4, which includes a motor 1 and a gear box 5, wherein the motor 1 is fixedly connected with the gear box 5, and the axes of the motor 1 and the gear box 5 are coincident; the utility model discloses a motor, including motor 1, connecting portion 11 are inside to be provided with the insulating layer, with the pencil that the binding post of motor 1 inside is connected can be installed prevent the condition of even electricity in connecting portion 11 and take place, just connecting portion 11 with motor 1 adopts cast aluminium or punching press mode integrated into one piece, and its compact structure need not secondary assembly, and integrated into one piece makes motor 1 has good waterproof nature, and whole equipment is safer.
The power output end of the motor 1 is fixedly connected with a motor shaft tooth 12, and the motor shaft tooth 12 and the shaft of the motor 1 are integrally formed, so that the transmission precision of the motor in power output is improved.
The gear box 5 comprises a primary gear 51, a planet carrier 52, a secondary gear 53, an output disc 54 and a gear ring 55, wherein the gear ring 55 is fixedly connected with the motor 1, the primary gear 51 and the secondary gear 53 are respectively provided with three numbers, the three primary gears 51 are respectively meshed with the motor shaft teeth 12, the three secondary gears 53 are respectively meshed with the transmission gears, the upper surface of the planet carrier 52 is provided with three first planet shafts 521, the three primary gears 51 are respectively arranged on the three first planet shafts 521 and are rotationally connected with the three first planet shafts 521, the bottom end of the planet carrier 52 is provided with the transmission gears, the three secondary gears 53 are meshed with the transmission gears, the top end of the output disc 54 is provided with three second planet shafts 541, the three secondary gears 53 are respectively arranged on the three second planet shafts 541 and are rotationally connected with the three second planet shafts 541, the internal surface of ring gear 55 be provided with one-level gear 51 with secondary gear 53 complex internal gear ring, one-level gear 51 with secondary gear 53 respectively with the internal gear ring meshing, motor 1 direct drive gear box 5 slows down and moment of torsion output, and transmission efficiency is higher, and multistage gear drive can provide bigger moment of torsion for the parking executor, improves the braking effect of parking.
The bottom end of the motor 1 is provided with a boss, the top end of the gear ring 55 is provided with a groove matched with the boss, a sealing ring 3 and a protective gasket 4 are sequentially arranged between the boss and the groove from top to bottom, the motor 1 is fixedly connected with the gear box 5 and tightly connected with the gear box 5 through the sealing ring 3 and the protective gasket 4 by utilizing a fixing screw 2, the axes of the motor 1 and the gear box 5 are overlapped during connection, coaxial direct-drive transmission is realized, and transmission loss is reduced.
The bottom end of the gear ring 55 is fixedly connected with a brake caliper 10, the center position of the top end of the brake caliper 10 is provided with an external spline 9, the center position of the bottom end of the output disc 54 is provided with an internal spline 8, the external spline 9 is installed in the internal spline 8, and the locking control of the brake caliper 10 is realized by controlling the movement of the splines. The bottom end of the gear ring 55 is further provided with a mounting hole, the gear ring 55 is fixedly connected with the brake caliper 10 by penetrating through the mounting hole through a bolt, a bushing 7 is mounted in the mounting hole, a brake caliper sealing ring 6 is arranged between the gear ring 55 and the brake caliper 10, and the bushing 7 and the brake caliper sealing ring 6 work in a matched mode to enable the connection between the brake caliper 10 and the gear ring 55 to be more compact and reduce vibration of the device.
The application a coaxial directly drive type electron parking executor at the during operation, the motor shaft rotates and drives motor shaft tooth 12 and rotate, motor shaft tooth 12 drives the work of 5 inside multistage gear drive mechanisms of gear box, and multistage gear drive mechanism provides bigger output torque for the parking executor, and the internal spline 8 that 5 bottoms of gear box set up cooperates with the external spline 9 that pincers 10 tops set up, according to the transmission condition of 5 inside multistage gear drive mechanisms of gear box, drives internal spline 8 and external spline 9 and rotates, and then controls the braking condition of pincers 10.
The motor shell of the coaxial direct-drive type electronic parking actuator is directly and fixedly connected with the gear box, the mounting concentricity of the motor and the gear box is guaranteed, the motor directly drives the gear box to reduce the speed and output torque through a coaxial direct-drive transmission mode, other transition transmission modes are not needed, the gear transmission efficiency and the service life can be improved, and meanwhile the working noise of a system is reduced; compared with the traditional belt connection or chain connection, the coaxial direct-drive transmission mode is not limited by the outer size of the cylinder diameter of the brake caliper, is suitable for brake calipers of various sizes, and solves the problem of applicability of the large-cylinder-diameter caliper; the connecting part is arranged on the outer side of the motor, so that the safety can be improved by preventing a wire harness connected with the motor at the connecting part, the motor and the connecting part are of an integrated structure, and the motor shell is integrally formed in a die-casting or stamping mode, so that the sealing performance of the device is greatly improved while the light weight is realized; the gear box and the motor are designed into completely independent modules, different matching combinations can be carried out according to requirements, and the application range is wider.
Example 2
The motor 1 adopts a flat motor, and the flat motor is selected to ensure that the axial length of the motor 1 is smaller under the condition that the output power is the same, so that the volume of the parking device is smaller, and the application range is wider.
The primary gear 51 and the secondary gear 53 are formed by metal powder metallurgy or metal sheet extrusion, so that the height of the gear box 5 is reduced, the overall size of the device is reduced, and the application range is enlarged.
In this embodiment, the number of teeth of the inner ring gears engaged with the primary gear 51 and the secondary gear 53 may be designed to be the same or different, and the relationship between the number of teeth of the two inner ring gears is adjusted as required, so that the gear box 5 provides appropriate torque and differential speed requirements.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The coaxial direct-drive electronic parking actuator is characterized by comprising a motor (1) and a gear box (5), wherein the motor (1) is fixedly connected with the gear box (5), the axes of the motor and the gear box are coincident, and the power output end of the motor (1) is fixedly connected with motor shaft teeth (12);
the gearbox (5) comprises a primary gear (51), a planet carrier (52), a secondary gear (53), an output disc (54) and a gear ring (55), the top end of the gear ring (55) is fixedly connected with the motor (1), the primary gear (51) is meshed with the motor shaft teeth (12), a first planet shaft (521) is arranged on the upper surface of the planet carrier (52), the primary gear (51) is rotationally connected with the first planet shaft (521), a transmission gear is arranged at the bottom end of the planet carrier (52), the secondary gear (53) is meshed with the transmission gear, a second planet shaft (541) is arranged at the top end of the output disc (54), the secondary gear (53) is rotationally connected with the second planet shaft (541), and an inner gear ring matched with the primary gear (51) and the secondary gear (53) is arranged on the inner surface of the gear ring (55), the primary gear (51) and the secondary gear (53) are respectively meshed with the internal gear ring.
2. The coaxial direct-drive electronic parking actuator according to claim 1, wherein a boss is arranged at the bottom end of the motor (1), a groove matched with the boss is arranged at the top end of the gear ring (55), and a sealing ring (3) and a protective gasket (4) are sequentially arranged between the boss and the groove from top to bottom.
3. The coaxial direct-drive electronic parking actuator according to claim 1, wherein the number of the primary gears (51) and the number of the secondary gears (53) are three, the three primary gears (51) are respectively engaged with the motor shaft teeth (12), and the three secondary gears (53) are respectively engaged with the transmission gear.
4. The coaxial direct-drive electronic parking actuator according to claim 1, wherein a connecting portion (11) is arranged on the outer side of a housing of the motor (1), an insulating layer is arranged inside the connecting portion (11), and the connecting portion (11) and the motor (1) are integrally formed in a cast aluminum or stamping mode.
5. The actuator according to claim 1, wherein the shaft of the motor (1) and the motor shaft teeth (12) are integrally formed.
6. The coaxial direct-drive electronic parking actuator according to claim 1, wherein a brake caliper (10) is fixedly connected to the bottom end of the gear ring (55), an external spline (9) is arranged at the center of the top end of the brake caliper (10), an internal spline (8) is arranged at the center of the bottom end of the output disc (54), and the external spline (9) is installed in the internal spline (8).
7. The actuator according to claim 6, characterized in that a brake caliper seal (6) is provided, said brake caliper seal (6) being mounted between said ring gear (55) and said brake caliper (10).
8. The coaxial direct-drive electronic parking actuator according to claim 7, wherein a mounting hole is formed at the bottom end of the gear ring (55), and a bushing (7) is mounted in the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110662787.8A CN113280063A (en) | 2021-06-15 | 2021-06-15 | Coaxial direct-drive electronic parking actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110662787.8A CN113280063A (en) | 2021-06-15 | 2021-06-15 | Coaxial direct-drive electronic parking actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113280063A true CN113280063A (en) | 2021-08-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110662787.8A Pending CN113280063A (en) | 2021-06-15 | 2021-06-15 | Coaxial direct-drive electronic parking actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113280063A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090308698A1 (en) * | 2008-06-16 | 2009-12-17 | Hyundai Mobis Co., Ltd. | Caliper attaching type electrical parking brake in vehicle |
| CN102001334A (en) * | 2010-11-19 | 2011-04-06 | 芜湖伯特利汽车安全系统有限公司 | Electronic parking executor applied to motor vehicle brake system |
| WO2015101562A2 (en) * | 2013-12-30 | 2015-07-09 | Chassis Brakes International B.V. | Motor-reducer with planetary gearset and drum brake and braking device provided with same |
| FR3031154A1 (en) * | 2014-12-29 | 2016-07-01 | Foundation Brakes France | DIFFERENTIALLY REDUCING BRAKE ACTUATOR, BRAKE OR BRAKE CALIPER INCLUDING SUCH ACTUATOR, AND METHOD FOR LOOSENING SUCH BRAKE |
-
2021
- 2021-06-15 CN CN202110662787.8A patent/CN113280063A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090308698A1 (en) * | 2008-06-16 | 2009-12-17 | Hyundai Mobis Co., Ltd. | Caliper attaching type electrical parking brake in vehicle |
| CN102001334A (en) * | 2010-11-19 | 2011-04-06 | 芜湖伯特利汽车安全系统有限公司 | Electronic parking executor applied to motor vehicle brake system |
| WO2015101562A2 (en) * | 2013-12-30 | 2015-07-09 | Chassis Brakes International B.V. | Motor-reducer with planetary gearset and drum brake and braking device provided with same |
| CN106103221A (en) * | 2013-12-30 | 2016-11-09 | 底盘制动系统国际有限公司 | There is decelerator, the drum brake equipped with this decelerator, disk brake and the brake apparatus of planetary gearsets |
| FR3031154A1 (en) * | 2014-12-29 | 2016-07-01 | Foundation Brakes France | DIFFERENTIALLY REDUCING BRAKE ACTUATOR, BRAKE OR BRAKE CALIPER INCLUDING SUCH ACTUATOR, AND METHOD FOR LOOSENING SUCH BRAKE |
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