CN210363782U

CN210363782U - Integrated electronic parking brake system

Info

Publication number: CN210363782U
Application number: CN201921427592.XU
Authority: CN
Inventors: 吴保亮; 丁海辉; 梁庚法; 廖程亮; 杨林海; 熊和保; 段志娟; 秦文波; 邓乐辉
Original assignee: Jiangling Holdings Co Ltd
Current assignee: Jiangling Holdings Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-04-21
Anticipated expiration: 2029-08-29

Abstract

The utility model provides an integrated electronic parking braking system, which comprises an actuating mechanism, wherein the actuating mechanism comprises a bracket and a transmission structure arranged on the bracket; the transmission structure comprises an external sleeve, a threaded sleeve and a screw rod, the threaded sleeve is coaxially arranged in the external sleeve and can move along the axial direction, one end of the screw rod is in threaded connection with the threaded sleeve, the other end of the screw rod extends out of the external sleeve, and the screw rod is rotated to drive the threaded sleeve to move axially; the end, away from the screw rod, of the threaded sleeve is provided with an annular limiting plate with a through hole, the threaded sleeve penetrates through the through hole and is fixedly connected with the inner wall of the limiting plate, and the outer wall of the limiting plate is provided with a plurality of bulges which are uniformly arranged at intervals in a circumferential manner; the inner wall of the outer sleeve is axially provided with a plurality of convex plates which are arranged circumferentially, a groove is formed between every two adjacent convex plates, and the protrusions are abutted against the convex plates. The utility model discloses set up a plurality of flanges at external sleeve inner wall, it is rotatory with the protruding butt of fixing at the outside limiting plate of swivel nut to have restricted the swivel nut, improves the stability of swivel nut along axial round trip movement.

Description

Integrated electronic parking brake system

Technical Field

The utility model relates to an automobile chassis braking field especially relates to an integrated form electron parking braking system.

Background

Modern automobile manufacturing technology is increasingly and closely fused with electronic technology and information technology, and automobiles are not simple vehicles any more and become carriers of modern technology. In view of safety, automobiles are currently equipped with a parking brake system.

The traditional mechanical parking brake consists of a parking handle, a pull wire and a parking brake which are connected in sequence, wherein the parking handle is an actuating mechanism of the parking brake and is generally arranged near a driver in an operable range, and the driver realizes a parking function by manually controlling the parking handle to move up and down; the parking brake is generally arranged near a rear axle, and a parking handle (commonly called a hand brake) pulls the parking brake through a lever principle to lock a brake shoe or a brake caliper of a rear wheel. However, due to the problem of arrangement space, the size of the parking brake is not too large, the operation force of the parking handle is usually 200N or 300N, and some vehicle models can reach 400N or even higher, so the labor intensity of drivers is large, the force of different drivers is different, the braking force of different drivers for operating the parking handle is different, the parking response time is different, and the safety is low. Compared with a mechanical type, the stay cable type electronic parking braking system is advanced, a hydraulic driving piston is controlled, the piston pushes a friction plate to clamp a brake disc, but the stay cable type electronic parking braking system is low in response speed, poor in emergency braking performance and low in safety.

The existing electronic parking brake system is generally provided with a rear embedded integrated electronic parking brake system, power is derived from a motor, the parking brake and the release of a vehicle are realized through a brake through a transmission device, the transmission device generally adopts a pull rod type structure, the motor drives the pull rod type structure to move back and forth through a gear structure, and finally a friction plate is used for clamping a brake disc.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an integrated form electron parking braking system solves the current emergent braking performance poor problem of parking braking.

An integrated electronic parking brake system comprises an integrated electronic control mechanism and an execution mechanism, wherein the execution mechanism executes parking or parking releasing actions after receiving a control command sent by the integrated electronic control mechanism, and the execution mechanism comprises a support and a transmission structure arranged on the support;

the transmission structure comprises an external sleeve, a threaded sleeve and a screw rod, the threaded sleeve is coaxially arranged in the external sleeve and can move axially, one end of the screw rod is in threaded connection with the threaded sleeve, the other end of the screw rod extends out of the external sleeve, and the screw rod is rotated to drive the threaded sleeve to move axially;

an annular limiting plate is arranged at the end, away from the extension end of the screw rod, of the threaded sleeve, a through hole is formed in the middle of the limiting plate, the threaded sleeve penetrates through the through hole and is fixedly connected with the inner wall of the limiting plate, a plurality of bulges are arranged on the outer wall of the limiting plate, and the bulges are uniformly arranged at intervals in a circumferential manner;

the inner wall of the outer sleeve is provided with a plurality of convex plates in the axial direction, the convex plates are arranged circumferentially, a groove is formed between every two adjacent convex plates, and the protrusions are abutted to the convex plates.

According to the utility model provides an integrated form electron parking braking system has following beneficial effect: the utility model discloses set up a plurality of flanges at the outside sleeve inner wall that is the curved surface, make outside sleeve have the plane region, this plane region and the protruding butt of fixing at the outside limiting plate of swivel nut, increase the frictional force of the two, it is rotatory to have restricted the swivel nut, and some archs fall into in the recess that forms between the adjacent flange, make the side butt of arch and flange, it is rotatory to have further restricted the swivel nut, make the swivel nut can only follow axial displacement and can not take place ascending rotation in week, improve the stability of swivel nut along axial round trip movement, thereby be favorable to improving the stability that parking and conciliation are situated under.

In addition, according to the utility model provides an integrated form electron parking braking system can also have following additional technical characterstic:

furthermore, the bracket is also provided with a gear structure, the gear structure comprises a direct current motor, a large belt wheel, a duplicate gear and an inner gear seat which are coaxially and sequentially arranged, the output shaft of the direct current motor is provided with a small belt wheel, the large belt wheel is connected with the small belt wheel through a belt, the large belt wheel is provided with an inner gear ring,

the duplex gear comprises a first gear and a second gear, the centers of the first gear and the second gear are connected through a connecting shaft, the first gear is meshed with the inner gear ring, the second gear is meshed with the inner gear seat through a spline, and one end, far away from the second gear, of the inner gear seat is connected with the extending end of the screw rod.

Furthermore, the external sleeve is arranged in a shell, the outer wall of the external sleeve is fixedly connected with the inside of the shell, the outer wall of the shell is connected with an installation seat, and the installation seat is provided with a bolt hole;

the support is fixedly provided with a longitudinally arranged return spring, one end of the return spring, which is far away from the support, is fixedly connected with an internal thread seat, the internal thread seat is provided with a threaded hole, the threaded hole is communicated with the bolt hole, and the bolt hole is internally provided with a bolt for fixing the mounting seat on the support.

Furthermore, 4 convex plates are arranged, and each convex plate is abutted to the two bulges.

Furthermore, the bulges comprise a first bulge and a second bulge, the first bulge is abutted with the surface of the convex plate, and the second bulge is matched with the groove and abutted with the side surface of the convex plate.

Further, the cross-sectional shape of the groove is arc-shaped.

Further, be equipped with the joint post in the recess, it is adjacent form between the arch with the holding tank of joint post looks adaptation, the length of joint post is greater than bellied length.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an actuator of an integrated electronic parking brake system according to an embodiment of the present invention;

fig. 2 is a front view of a gear structure of the integrated electronic parking brake system according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2;

fig. 4 is a partial schematic structural diagram of an actuator according to an embodiment of the present invention;

fig. 5 is a schematic block diagram of an integrated electronic parking brake system according to an embodiment of the present invention;

10. a support; 11. a return spring; 12. an internal thread seat; 20. a transmission structure; 21. an outer sleeve; 22. A threaded sleeve; 23. a screw; 30. a limiting plate; 31. a protrusion; 32. accommodating grooves; 40. a convex plate; 41. a groove; 50. a gear structure; 51. a direct current motor; 52. a large belt pulley; 53. a first gear; 54. a second gear; 55. a connecting shaft; 56. an inner gear seat; 57. a small belt pulley; 58. a belt; 59. a spline; 60. a housing; 61. a mounting seat; 62. a bolt; 70. a power source; 80. an ECU 1; 90. an ECU 2; 100. an ECU 3; 101. a data input/output module; 102. a data processing module; 103. a motor drive module; 110. a signal input section; 111. a clutch position signal; 112. a gear signal; 113. an ignition switch signal; 114. a brake pedal signal; 115. a parking switch signal; 120. and an actuator.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 4, an embodiment of the present invention provides an integrated electronic parking brake system, including an integrated electronic control mechanism and an execution mechanism 120, where the execution mechanism 120 receives a control command sent by the integrated electronic control mechanism and then executes a parking or parking releasing action, and the execution mechanism 120 includes a support 10 and a transmission structure 20 disposed on the support 10.

The transmission structure 20 comprises an external sleeve 21, a threaded sleeve 22 and a screw rod 23, wherein the threaded sleeve 22 is coaxially arranged in the external sleeve 21 and can move along the axial direction, one end of the screw rod 23 is in threaded connection with the threaded sleeve 22, the other end of the screw rod 23 extends out of the external sleeve 21, and the screw rod 23 is rotated to drive the threaded sleeve 22 to move axially; an annular limiting plate 30 is arranged at the end, away from the screw rod 23, of the threaded sleeve 22, a through hole is formed in the middle of the limiting plate 30, the threaded sleeve 22 penetrates through the through hole and is fixedly connected with the inner wall of the limiting plate 30, a plurality of protrusions 31 are arranged on the outer wall of the limiting plate 30, and the protrusions 31 are uniformly arranged at intervals in a circumferential manner; the inner wall of the outer sleeve 21 is provided with a plurality of convex plates 40 along the axial direction, the convex plates 40 are arranged in a circumferential manner, a groove 41 is formed between the adjacent convex plates 40, and the protrusion 31 is abutted against the convex plates 40.

The utility model discloses 21 inner walls of outside sleeve that is the curved surface set up a plurality of flanges 40, make outside sleeve 21 have the plane region, this plane region and the protruding 31 butt of fixing at the outside limiting plate 30 of swivel nut 22, increase the frictional force of the two, it is rotatory to restrict swivel nut 22, and protruding 31 falls into the recess 41 that forms between the adjacent flange 40 a bit, make protruding 31 and flange 40's side butt, it is rotatory to further restrict swivel nut 22, make swivel nut 22 can only follow axial displacement and can not take place ascending rotation in week, improve swivel nut 22 along axial round trip movement's stability, thereby be favorable to improving the stability that parking and deconsolidation were situated between.

Specifically, the bracket 10 is further provided with a gear structure 50, the gear structure 50 includes a dc motor 51, a large belt pulley 52, a duplicate gear and an internal gear seat 56, an output shaft of the dc motor 51 is provided with a small belt pulley 57, the large belt pulley 52 is connected with the small belt pulley 57 through a belt 58, and the large belt pulley 52 is provided with an internal gear ring;

the duplicate gear comprises a first gear 53 and a second gear 54, the centers of the first gear 53 and the second gear 54 are connected through a connecting shaft 55, the first gear 53 is meshed with the inner gear ring, the second gear 54 is meshed with the inner gear seat 56 through a spline 59, and one end, far away from the second gear 54, of the inner gear seat 56 is connected with the extending end of the screw rod 23.

When the dc motor 51 is started, the output shaft and the small pulley 57 rotate synchronously, so as to drive the large pulley 52, which is driven by the belt 58 and the small pulley 57, to rotate, and further drive the first gear 53 engaged with the ring gear to rotate, and the first gear 53 rotates to drive the second gear 54 and the spline 59 to rotate, so as to drive the inner gear seat 56 and the screw 23 connected with the inner gear seat 56 to rotate together. The gear structure 50 comprises a multi-stage gear reduction structure, and the gear structure 50 reduces the speed and increases the torque of the rotary motion, so that the braking effect of parking braking is improved.

The outer sleeve 21 is installed in a shell 60, the outer wall of the outer sleeve 21 is fixedly connected with the inside of the shell 60, the outer wall of the shell 60 is connected with an installation seat 61, and a bolt 62 hole is formed in the installation seat 61;

specifically, a return spring 11 which is longitudinally arranged is fixed on the support 10, one end, far away from the support 10, of the return spring 11 is fixedly connected with an internal thread seat 12, a threaded hole is formed in the internal thread seat 12, the threaded hole is communicated with the bolt 62 hole, and a bolt 62 which is used for fixing the mounting seat 61 on the support 10 is arranged in the bolt 62 hole. The outer sleeve 21 is fixed with the shell 60, the mounting seat 61 of the shell 60 is connected with the bracket 10 through a bolt 62, the return spring 11 is arranged to have a buffering function, and the mounting seat 61 is tightly attached to the threaded seat through the elasticity of the return spring 11.

Specifically, there are 4 convex plates 40, and each convex plate 40 abuts against two of the protrusions 31. Each of the convex plates 40 abuts against the boss 31 at two different positions, increasing the contact area between the convex plate 40 and the boss 31, and restricting the rotation of the threaded sleeve 22 in the circumferential direction.

Specifically, the protrusion 31 includes a first protrusion 31 and a second protrusion 31, the first protrusion 31 abuts against the surface of the convex plate 40, and the second protrusion 31 is adapted to the groove 41 and abuts against the side surface of the convex plate 40. The cross-sectional shape of the groove 41 is an arc.

In another embodiment of the present invention, a joint column is disposed in the groove 41, and is adjacent to the accommodating groove 32 formed between the protrusions 31 and adapted to the joint column, and the length of the joint column is greater than the length of the protrusions 31. The clamping columns are placed in the accommodating grooves 32 and are in contact with the inner walls of the accommodating grooves 32, and the rotation of the threaded sleeve 22 is limited.

Referring to fig. 5, the integrated electronic control mechanism includes a power source 70, an ECU180 of an engine, an ECU290 of an ABS/ESC, an ECU3100 of an EPB, and a signal input part 110, the signal input part 110 includes a clutch position signal 111, a shift signal 112, an ignition switch signal 113, a brake pedal signal 114, and a parking switch signal 115, which are input to the control unit ECU3100 of the EPB, the engine ECU180 and the ECU290 of the ABS/ESC are connected to the ECU3100 of the EPB through a CAN bus, the ECU3100 includes a data input/output module 101, a data processing module 102, and a motor driving module 103, the data input/output module 101 receives various signals and then passes through the data processing module 102, the ECU3100 performs corresponding algorithms and sends control commands according to vehicle conditions, the motor driving module 103 performs corresponding execution actions after receiving the commands, the execution mechanism 120 acts on a brake disc of a rear brake, the motor drives the gear mechanism to rotate in forward rotation or reverse rotation according to the command of the ECU3100, and then drives the screw 23 to pull the piston of the brake wheel cylinder to move axially, so that parking or parking releasing action is realized, wherein the clamping force and current signals of the executing mechanism 120 are also fed back to the data input and output module 101 in the ECU3100 of the EPB, and the parking signal is also sent to the CAN bus.

During the operation, the plurality of convex plates 40 are axially arranged on the inner wall of the outer sleeve 21, so that the inner wall of the outer sleeve 21 is not curved, the area provided with the convex plates 40 is a plane, the screw 23 is rotated, as the protrusions 31 outside the screw sleeve 22 are abutted to the surface of the convex plates 40 of the outer sleeve 21, some protrusions 31 fall into the grooves 41 and are abutted to the side surfaces of the convex plates 40, so that the inner sleeve 22 cannot rotate and can only axially move, and the tail end of the axially moving screw sleeve 22 can push the friction plate to clamp the brake disc so as to execute the parking action.

From the above description, the utility model provides a pair of integrated form electron parking braking system, beneficial effect lies in: the utility model discloses set up a plurality of flanges at the outside sleeve inner wall that is the curved surface, make outside sleeve have the plane region, this plane region and the protruding butt of fixing at the outside limiting plate of swivel nut, increase the frictional force of the two, it is rotatory to restrict the swivel nut, and some archs fall into in the recess that forms between the adjacent flange, make the side butt of arch and flange, it is rotatory to have further restricted the swivel nut, make the swivel nut can only follow axial displacement and can not take place ascending rotation in week, improve the stability of swivel nut along axial round trip movement, thereby be favorable to improving the stability that parking and conciliate.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An integrated electronic parking brake system comprises an integrated electronic control mechanism and an execution mechanism, wherein the execution mechanism executes parking or parking releasing actions after receiving a control command sent by the integrated electronic control mechanism;

2. The integrated electronic parking brake system according to claim 1, wherein the bracket is further provided with a gear structure, the gear structure comprises a direct current motor, and a large belt wheel, a duplicate gear and an internal gear seat which are coaxially arranged in sequence, a small belt wheel is mounted on an output shaft of the direct current motor, the large belt wheel is connected with the small belt wheel through a belt, the large belt wheel is provided with an internal gear ring,

3. The integrated electronic parking brake system according to claim 1, wherein the outer sleeve is mounted in a housing, the outer wall of the outer sleeve is fixedly connected with the inside of the housing, the outer wall of the housing is connected with a mounting seat, and the mounting seat is provided with a bolt hole;

4. The integrated electronic parking brake system of claim 1 wherein there are 4 of the tabs, each tab abutting two of the protrusions.

5. The integrated electronic parking brake system of claim 1 wherein the protrusions include a first protrusion that abuts a surface of the raised plate and a second protrusion that fits into the recess and abuts a side of the raised plate.

6. The integrated electronic parking brake system of claim 5 wherein the cross-sectional shape of the groove is arcuate.

7. The integrated electronic parking brake system according to claim 1, wherein a clamping column is arranged in the groove, a receiving groove matched with the clamping column is formed between the adjacent protrusions, and the length of the clamping column is greater than that of the protrusion.