Electronic mechanical brake and sealing structure

Abstract

The utility model provides an electronic mechanical brake and sealing structure, including driving mechanism, driving mechanism including top shell, middle shell and lower shell, top shell and middle shell are connected to form controller cavity, middle shell and lower shell are connected to form transmission mechanism cavity. The side, away from the middle shell, of the lower shell is connected with a driving motor, and a motor shaft arranged on the driving motor penetrates through the lower shell and extends into the transmission mechanism cavity. PINs arranged on the driving motor penetrate through the middle shell and the lower shell, the PINs extend into the controller cavity, sealing mechanisms are arranged on the outer sides of the PINs, and the PINs are connected to the middle shell and the lower shell in a sealed mode through the sealing mechanisms respectively. The transmission mechanism and the controller are respectively arranged in the transmission mechanism cavity and the controller cavity, and the sealing mechanism is arranged on the outer side of the motor shaft, so that a mechanical part is isolated from an electrical element, the controller is prevented from being polluted and damaged by lubricating grease and abrasion chippings, the normal work of the controller is ensured, and the reliability of the electronic mechanical brake is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the vehicle technical field, specifically relates to an electronic mechanical brake and sealing structure. BACKGROUND

[0002] With the rapid development of modern automobile electronic technology, under the background of the performance bottleneck of traditional hydraulic brake system, electronic mechanical brake becomes an important development direction in brake technology field. Among them, the wheel edge executor integrated controller scheme gradually becomes the mainstream design scheme. This scheme integrates the executor, controller and other components together, not only improves the response speed and control accuracy of the brake system, but also significantly reduces the overall volume and cost of the system. The wheel brake integrates the executor and the controller, that is, it contains not only the mechanical transmission mechanism but also the controller. The mechanical transmission mechanism needs lubricating grease to ensure normal operation and reduce wear and tear during operation. The debris generated by the mechanical transmission mechanism during operation has conductivity. These impurities may enter the controller area during operation, causing the electronic components on the PCB board of the controller to short circuit, corrode or interrupt signal transmission, affecting its normal function, and even causing safety accidents.

[0003] Therefore, the above problems need to be solved. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides an electronic mechanical brake and sealing structure, which sets up a sealing mechanism to prevent oil stains and debris generated by wear and tear from entering the controller area, avoid the short circuit and corrosion of electronic components in the controller area, ensure normal operation, and improve the reliability of the electronic mechanical brake.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a sealing structure, including drive mechanism, drive mechanism includes top casing, middle casing and lower casing, top casing and middle casing are connected and form controller cavity, middle casing and lower casing are connected and form transmission mechanism cavity. Controller is equipped in controller cavity, and transmission mechanism is equipped in transmission mechanism cavity. The side of lower casing away from middle casing is connected with drive motor, the motor shaft provided with drive motor passes through lower casing and extends into transmission mechanism cavity, and the motor shaft is drivenly connected with the transmission mechanism in transmission mechanism cavity. The PIN needle provided with drive motor passes through middle casing and lower casing, and the PIN needle extends into controller cavity, the outside of PIN needle is equipped with sealing mechanism, and sealing mechanism is sealedly connected with PIN needle in middle casing and lower casing respectively. The above-mentioned PIN needle is a kind of metal parts for conducting electricity or transmitting electric signal. The utility model is applied to electronic mechanical brake, and the caliper mechanism of electronic mechanical brake is driven by drive mechanism, and vehicle is braked. The utility model sets transmission mechanism and controller in transmission mechanism cavity and controller cavity respectively, and sets sealing mechanism, separates mechanical part and electrical element, avoids mutual influence of transmission mechanism and controller, prevents lubricating grease and wear debris from causing pollution and damage to controller, avoids short circuit and corrosion of controller, ensures normal work of controller, and improves the reliability of electronic mechanical brake.

[0006] Further, in the sealing structure, the sealing mechanism is cylindrical. The side of the middle casing close to the lower casing is provided with a first sealing hole, which is a counterbore hole. The end of the sealing mechanism away from the drive motor is connected in the first sealing hole, and the PIN needle passes through the first sealing hole into the controller cavity. The lower casing is provided with a second sealing hole corresponding to the first sealing hole. The sealing mechanism passes through the second sealing hole, and the PIN needle is sealedly connected through the sealing mechanism and the second sealing hole. By setting the sealing mechanism in the first sealing hole with a counterbore, the contact area of the sealing mechanism and the first sealing hole is increased, the sealing performance is improved, the lubricating grease and wear debris are prevented from entering the controller cavity during the operation of the transmission mechanism, the controller is prevented from being contaminated and damaged, and the reliability of the electronic mechanical brake is improved.

[0007] Further, in the sealing structure, the end of the sealing mechanism away from the drive motor is provided with an annular groove, and a sealing ring is arranged in the annular groove. The sealing ring is sealedly connected between the annular groove and the first sealing hole. The sealing ring and the sealing mechanism form a double sealing, further improving the sealing performance between the transmission mechanism cavity and the controller cavity, preventing the lubricating grease and wear debris from entering the controller cavity, preventing the electrical elements in the controller cavity from being contaminated and damaged, and improving the service life of the electronic mechanical brake.

[0008] Further, in the sealing structure, the motor shaft sleeve is provided with a bearing, and the motor shaft is connected with the lower casing through the bearing. The bearing can reduce the friction between the motor shaft and the lower casing, and can bear the radial load received by the motor shaft, reduce the wear of the drive motor, and improve the service life of the drive motor.

[0009] Further, the sealing structure, a first sealing groove is arranged along the opening of the lower end of the middle shell, and sealing glue is arranged in the first sealing groove, and the middle shell and the lower shell are sealingly connected.

[0010] Further, the sealing structure, a sealing step is arranged at the upper end of the middle shell, the lower end of the top shell is connected with the sealing step, and the sealing step and the lower end of the top shell are staggered.

[0011] Further, the sealing structure, the bearing is a sealed bearing. The bearing comprises an inner ring, rolling elements and an outer ring, and a plurality of rolling elements are clamped in rolling grooves between the inner ring and the outer ring. A retainer is arranged between the inner ring and the outer ring, the rolling elements are connected with the retainer, and the retainer uniformly distributes the rolling elements between the inner ring and the outer ring. The inner ring and the outer ring are respectively provided with second sealing grooves, the second sealing grooves are arranged on both sides of the retainer, sealing covers are arranged on both sides of the retainer, and the sealing covers are clamped in the second sealing grooves. The sealed bearing with the sealing covers can prevent grease in the transmission mechanism cavity from flowing out from the bearing gap, avoid the transmission mechanism from lacking lubrication and entering an overdrive mode, and improve the service life of the transmission mechanism.

[0012] Further, the sealing structure, the sealing cover is bent in an L shape towards the rolling elements at one end close to the inner ring, and the sealing cover is bent in a hook shape away from the rolling elements at one end close to the outer ring. The sealing cover is convenient to install, does not vibrate and fall out when clamped in the second sealing groove, ensures that the sealing cover plays a sealing role, and improves the sealing performance of the bearing.

[0013] The second aspect of the utility model provides an electric control mechanical brake, including the drive mechanism, drive mechanism drive connection has the calliper assembly, the calliper assembly is close to the side of drive mechanism and is equipped with the imitation cavity, and drive motor is equipped in the imitation cavity. Drive motor is arranged in the imitation cavity, so that the structure of the electric control mechanical brake is more compact, and the space occupation of the electric control mechanical brake is reduced.

[0014] The utility model discloses an electric control mechanical brake and driving assembly thereof, which is characterized in that the transmission mechanism and the controller are arranged in the transmission mechanism cavity and the controller cavity respectively, and a sealing mechanism is arranged to isolate the mechanical part and the electrical element, thereby avoiding mutual influence between the transmission mechanism and the controller, preventing the lubricating grease and the wear debris from polluting and damaging the controller, avoiding short circuit and corrosion of the controller, ensuring normal operation of the controller, and improving the reliability of the electronic mechanical brake. The sealing mechanism is arranged in the first sealing hole in the counterbore, and a sealing ring is arranged to form double sealing of the sealing ring and the sealing mechanism, thereby improving the sealing property and the reliability of the electronic mechanical brake. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a sectional view of the sealing structure of the utility model;

[0016] Figure 2 It is Figure 1 a partial enlarged view;

[0017] Figure 3 It is Figure 1 a partial enlarged view;

[0018] Figure 4 It is an explosion view of the electric control mechanical brake.

[0019] In the drawing: 100, driving mechanism, 1, top shell, 2, middle shell, 21, first sealing hole, 22, first sealing groove, 23, sealing step, 3, lower shell, 31, second sealing hole, 4, controller cavity, 5, transmission mechanism cavity, 6, driving motor, 61, motor shaft, 62, PIN needle, 63, sealing mechanism, 631, ring groove, 64, sealing ring, 65, bearing, 651, inner ring, 6511, second sealing groove, 652, rolling body, 653, outer ring, 654, retainer, 655, sealing cover, 200, caliper assembly, 201, profiling cavity. DETAILED DESCRIPTION

[0020] Example 1

[0021] As Figure 1The sealing structure is shown, including a drive mechanism 100, the drive mechanism 100 includes top shell 1, middle shell 2 and lower shell 3, top shell 1 and middle shell 2 are connected to form controller cavity 4, middle shell 2 and lower shell 3 are connected to form transmission mechanism cavity 5. The controller cavity 4 is provided with a controller, and the transmission mechanism cavity 5 is provided with a transmission mechanism. The lower shell 3 is connected with the drive motor 6 away from the middle shell 2 side, the motor shaft 61 provided with the drive motor 6 penetrates the lower shell 3 and extends into the transmission mechanism cavity 5, the motor shaft 61 and the transmission mechanism in the transmission mechanism cavity 5 are drivingly connected. The PIN needle 62 provided with the drive motor 6 penetrates the middle shell 2 and the lower shell 3, the PIN needle 62 extends into the controller cavity 4, the PIN needle 62 is provided with a sealing mechanism 63 outside, the sealing mechanism 63 is sealed to the middle shell 2 and the lower shell 3 respectively. The first sealing groove 22 is provided along the lower end opening of the middle shell 2, the first sealing groove 22 is provided with sealing glue, and the middle shell 2 and the lower shell 3 are sealingly connected. The first sealing groove 22 is coated with sealing glue, when the middle shell 2 and the lower shell 3 are connected, part of the sealing glue will extend along the lower shell opening, when the sealing glue solidifies, the sealing glue is fixed in the first sealing groove 22, so that the connection part of the middle shell 2 and the lower shell 3 forms a good seal. The upper end opening of the middle shell 2 is provided with a sealing step 23, the lower end opening of the top shell 1 is connected with the sealing step 23, and the sealing step 23 and the lower end opening of the top shell 1 are staggered.

[0022] As Figure 2 The sealing structure is shown, the sealing mechanism 63 is provided as a cylindrical type. The middle shell 2 is provided with a first sealing hole 21 close to the lower shell 3 side, the first sealing hole 21 is provided as a countersunk hole, the sealing mechanism 63 is connected in the first sealing hole 21 away from the drive motor 6 end, and the PIN needle 62 penetrates into the controller cavity 4 from the first sealing hole 21. The lower shell 3 is provided with a second sealing hole 31, the second sealing hole 31 and the first sealing hole 21 are correspondingly arranged, the sealing mechanism 63 penetrates the second sealing hole 31, and the PIN needle 62 is sealingly connected through the sealing mechanism 63 and the second sealing hole 31. The motor shaft 61 is provided with a bearing 65, and the motor shaft 61 is connected with the lower shell 3 through the bearing 65.

[0023] As Figure 3The sealing structure shown, the bearing 65 is provided as a sealed bearing. The bearing 65 comprises an inner ring 651, rolling elements 652 and an outer ring 653, and a plurality of rolling elements 652 are clamped in the rolling grooves between the inner ring 651 and the outer ring 653. A retainer 654 is arranged between the inner ring 651 and the outer ring 653, the rolling elements 652 and the retainer 654 are connected, and the retainer 654 uniformly distributes the rolling elements 652 between the inner ring 651 and the outer ring 653. The inner ring 651 and the outer ring 653 are respectively provided with a second sealing groove 6511, and the second sealing groove 6511 is arranged on both sides of the retainer 654, and the retainer 654 is provided with a sealing cover 655, and the sealing cover 655 is clamped in the second sealing groove 6511. The sealing cover 655 is bent to be L-shaped in the direction of the rolling elements 652 near one end of the inner ring 651, and the sealing cover 655 is bent to be a hook shape away from the rolling elements 652 near the other end of the outer ring 653.

[0024] The utility model discloses drive mechanism and controller are arranged respectively in drive mechanism cavity 5 and controller cavity 4, and set up sealing mechanism 63 outside drive motor 6, sealing mechanism 63 sets up sealing ring 64, and mechanical part and electrical element are isolated.

[0025] Example 2

[0026] As Figure 4 The sealing structure shown, comprising the above-mentioned drive mechanism 100, the drive mechanism 100 is driven to be connected with the calliper assembly 200, the calliper assembly 200 is provided with the analog cavity 201 near one side of the drive mechanism 100, and the drive motor 6 is arranged in the analog cavity 201.

[0027] The above examples are exemplary, and the purpose is to illustrate the technical concept and characteristics of the utility model, so that those skilled in the art can understand the content of the utility model and implement it, and the protection scope of the utility model cannot be limited. Any equivalent change or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A seal structure, characterized by: The utility model provides a drive mechanism (100) including top casing (1), middle casing (2) and lower casing (3), top casing (1) and middle casing (2) are connected to form controller cavity (4), and middle casing (2) and lower casing (3) are connected to form transmission mechanism cavity (5), controller is equipped in controller cavity (4), and transmission mechanism is equipped in transmission mechanism cavity (5), drive motor (6) is connected to the side away from middle casing (2) of lower casing (3), motor shaft (61) of drive motor (6) is inserted into transmission mechanism cavity (5) through lower casing (3), and motor shaft (61) is drivenly connected with transmission mechanism in transmission mechanism cavity (5), PIN needle (62) of drive motor (6) passes through middle casing (2) and lower casing (3), PIN needle (62) is inserted into controller cavity (4), sealing mechanism (63) is equipped on the outside of PIN needle (62), and sealing mechanism (63) is sealedly connected with PIN needle (62) in middle casing (2) and lower casing (3) respectively.

2. The seal structure of claim 1, wherein: The sealing mechanism (63) is cylindrical; the middle casing (2) is provided with a first sealing hole (21) on the side close to the lower casing (3), the first sealing hole (21) is a countersunk hole, the sealing mechanism (63) is connected to the first sealing hole (21) on the end away from the drive motor (6), and the PIN needle (62) penetrates into the controller cavity (4) from the first sealing hole (21); the lower casing (3) is provided with a second sealing hole (31), the second sealing hole (31) is correspondingly arranged with the first sealing hole (21), the sealing mechanism (63) penetrates through the second sealing hole (31), and the PIN needle (62) is sealedly connected through the sealing mechanism (63) and the second sealing hole (31).

3. The seal structure of claim 2, wherein: The sealing mechanism (63) is provided with a ring groove (631) on the end away from the drive motor (6), a sealing ring (64) is arranged in the ring groove (631), and the sealing ring (64) is sealedly connected between the ring groove (631) and the first sealing hole (21).

4. The seal structure of claim 1, wherein: The motor shaft (61) is sleeved with a bearing (65), and the motor shaft (61) is connected with the lower casing (3) through the bearing (65).

5. The seal structure of claim 1, wherein: A first sealing groove (22) is arranged at the lower end opening of the middle casing (2), a sealing glue is arranged in the first sealing groove (22), and the middle casing (2) and the lower casing (3) are sealedly connected.

6. The sealed structure of claim 1, wherein: A sealing step (23) is arranged at the upper end opening of the middle casing (2), the lower end opening of the top casing (1) is connected with the sealing step (23), and the sealing step (23) and the lower end opening of the top casing (1) are staggered.

7. The sealed structure of claim 4, wherein: The bearing (65) is a sealed bearing; the bearing (65) comprises an inner ring (651), rolling elements (652) and an outer ring (653), a plurality of the rolling elements (652) are clamped in the rolling grooves between the inner ring (651) and the outer ring (653); a retainer (654) is arranged between the inner ring (651) and the outer ring (653), the rolling elements (652) are connected with the retainer (654), the retainer (654) keeps the rolling elements (652) uniformly distributed between the inner ring (651) and the outer ring (653); the inner ring (651) and the outer ring (653) are respectively provided with second sealing grooves (6511), the second sealing grooves (6511) are arranged on both sides of the retainer (654), sealing covers (655) are arranged on both sides of the retainer (654), and the sealing covers (655) are clamped in the second sealing grooves (6511).

8. The seal structure of claim 7, wherein: The sealing cover (655) is bent to be L-shaped near one end of the inner ring (651) and towards the rolling elements (652), and the sealing cover (655) is bent to be hook-shaped near one end of the outer ring (653) and away from the rolling elements (652).

9. An electromechanical brake characterized by: The driving mechanism (100) comprises the driving mechanism (100) of any one of claims 1 to 8, the driving mechanism (100) is drivenly connected with a caliper assembly (200), the caliper assembly (200) is provided with a profiled cavity (201) on one side close to the driving mechanism (100), and the driving motor (6) is arranged in the profiled cavity (201).

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