CN201103642Y - Actuating mechanism of vehicle electric parking braking system - Google Patents
Actuating mechanism of vehicle electric parking braking system Download PDFInfo
- Publication number
- CN201103642Y CN201103642Y CNU2007201844968U CN200720184496U CN201103642Y CN 201103642 Y CN201103642 Y CN 201103642Y CN U2007201844968 U CNU2007201844968 U CN U2007201844968U CN 200720184496 U CN200720184496 U CN 200720184496U CN 201103642 Y CN201103642 Y CN 201103642Y
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- brake
- braking
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- synchronous pulley
- piston
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Abstract
The utility model discloses an executing mechanism of an electronic parking and braking system of vehicles, which comprises a transmission device and a braking caliper assembly. After output of a DC motor in the transmission device is decelerated with torque increased by a transmission mechanism of a synchronous belt and a transmission mechanism of a planet gear with an involute of few teeth differences, the rotation movement is changed into linear movement by a sliding screw transmission mechanism and a brake disc is braked by applying the form that a thread sleeve pushes a piston and a brake block assembly. The circumference freedom degree of the piston is limited by the brake block assembly, and the circumference and axial freedom degrees of the thread sleeve are respectively limited by a non-circular hole of the piston and a blocking ring. The thread sleeve and a screw rod are matched in the manner of a self-locking screw thread, thus guaranteeing safe and reliable parking and braking. Compared with the traditional executing mechanism of a back wheel parking and braking system of vehicles, the executing mechanism provided by the utility model has the advantages of saving cab space, reducing labor intensity of drivers, leading to safer and more reliable parking and braking, facilitating the application of intelligent control and integrating other functions, etc.
Description
Technical field
The utility model relates to park braking system for automobile, relates in particular to vehicle electronic brake system actuator.
Background technique
The vehicle rear wheel parking braking system mainly is made up of Parking Brake, transmitting set and control gear, and mainly contain following three kinds of composition forms: 1. be used for the rear drum brake double as Parking Brake of service brake, the braking torque arm that links to each other successively with this drum brake, brake cable etc. are as transmitting set; 2. the trailing wheel brake caliper assembly double as Parking Brake that is used for service brake is installed at the interior screw rod of this brake caliper, swivel nut and the outside braking torque arm that links to each other successively, brake cable etc. as transmitting set; 3. a drum brake is installed separately as Parking Brake in the trailing wheel brake disc, the braking torque arm that links to each other successively with this drum brake, brake cable etc. are as transmitting set.The control gear of above-mentioned three kinds of forms generally is made up of parking brake handle grip etc.
From above-mentioned three kinds of common form as can be seen, transmitting set generally adopts mechanical drag-line structure.When operating this structure, driver's labor intensity is big, and the braking force during each Parking can vary with each individual, the Security in the time of can not guaranteeing on great slope Parking fully.
Under the situation that service braking sytem lost efficacy, need secondary braking sytem to realize the deceleration or the parking of automobile.Common car emergency braking system is served as by parking braking system, and severity of braking is directly proportional with the pulling force of pilot control parking brake handle grip, and this is not easy to control for the driver who uses this function once in a while.
Each braking back brake slipper all can have wearing and tearing in various degree, so brake clearance needs can realize automatic adjustment, and is slow excessively to prevent braking response speed.Above-mentioned three kinds of forms all adopt the part that installs a plurality of necessity additional to realize the automatic adjustment of brake clearance, therefore process, assemble loaded down with trivial details.
Summary of the invention
The purpose of this utility model provides a kind of vehicle electronic brake system actuator, under the cooperation of miscellaneous part such as ECU (Electrical Control Unit), can effectively overcome the above-mentioned shortcoming of traditional parking braking system.
The technological scheme that its technical problem that solves the utility model adopts is:
By transmitting set and brake caliper assembly.The front case and the rear case of transmitting set are tightly connected, form semi-enclosed housing, transmitting set links to each other with braking clamp body by screw, in the front case of transmitting set direct current generator is housed, on the output shaft of direct current generator small synchronous pulley is housed, small synchronous pulley links to each other with the big synchronous pulley that is contained in eccentric shaft one end by synchronous band, eccentric shaft is supported on the rear case near an end of big synchronous pulley, the other end is supported on the output inner gear, the middle eccentric segment of eccentric shaft is equipped with duplicate gear, duplicate gear is near the gear and the fixed annulus engagement that is installed in the front case of big synchronous pulley one side, the opposite side gear of duplicate gear and output inner gear engagement, output inner gear is installed on the output inner gear seat in the front case and links to each other with screw rod external part in the brake caliper assembly by spline, the screw rod external part is equipped with back-up ring near braking clamp body one side, screw rod not external part adopts self-locking thread to cooperate and be positioned at the non-circular hole of piston with swivel nut, the groove that is installed in close brake pad assembly one side of piston in the braking clamp body cylinder hole cooperates with the boss of brake pad assembly, and the centre of two brake pad assemblies is equipped with brake disc.
The beneficial effect that the utlity model has is:
1) control gear of park braking system for automobile is replaced by the parking braking button by brake handle, obviously saved cab space, as long as the driver presses or parking braking be implemented or be removed to the parking braking button of upspringing just can to vehicle, therefore labor intensity is little, and the size identical property of each parking braking power is good, can guarantee safe Parking in gradient scope of design fully.
2) transmitting set of park braking system for automobile is replaced by as shown in Figure 2 the transmitting set with big speed ratio by brake cable, ECU (Electrical Control Unit) easy to use is like this controlled it, by direct current generator being taked different control strategies, can realize other functions, for example: by the number of turns of control direct current generator return, can freely carry out precision control, thereby realize clearance self-regulating brake clearance.
3) braking force of emergency brake is provided by direct current generator, this moment, the output torque of direct current generator can adopt brake petal control, brake petal is stepped on deeply more, the output torque of direct current generator is big more, the braking clamping force is also big more, so just can realize gradual braking, meet driver's braking custom more.
In a word, the utility model provides safety and comfortable driving environment more for the user.
Description of drawings
Fig. 1 is the transmission block diagram of the utility model vehicle electronic brake system actuator.
Fig. 2 is the structural principle schematic representation of the utility model vehicle electronic brake system actuator.
Among the figure: 101, storage battery, 102, direct current generator, 103, synchronous belt drive mechanism, 104, the involute planetary gear gear drive, 105, the slip screw driving mechanism, 106, piston, 107, brake pad assembly, 108, brake disc, 201, braking clamp body, 202, piston packing, 203, swivel nut, 204, screw rod, 205, screw, 206, front case, 207, the output inner gear seat, 208, output inner gear, 209, fixed annulus, 210, duplicate gear, 211, rear case, 212, big synchronous pulley, 213, eccentric shaft, 214, be with synchronously, 215, small synchronous pulley, 216, motor cabinet, 217, the vibration damping cover, 218, back-up ring.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Be the transmission block diagram of the utility model vehicle electronic brake system actuator as shown in Figure 1.Storage battery 101, direct current generator 102, synchronous belt drive mechanism 103, involute planetary gear gear drive 104, slip screw driving mechanism 105, piston 106, brake pad assembly 107 and brake disc 108 transmit energy successively downwards.
Be the structural principle schematic representation of the utility model vehicle electronic brake system actuator as shown in Figure 2.The utility model comprises transmitting set and brake caliper assembly.The front case 206 of transmitting set and rear case 211 adopt fixed seal connection, form semi-enclosed housing, this housing that all the other component of transmitting set are housed links to each other with braking clamp body 201 by screw 205, in the front case 206 of transmitting set direct current generator 102 is housed, the output terminal of direct current generator 102 is supported on the motor cabinet 216 that is fixed in the front case 206, the other end is supported in the circular hole of front case 206 by vibration damping cover 217, small synchronous pulley 215 is housed on the output shaft of direct current generator 102, small synchronous pulley 215 is by linking to each other with the big synchronous pulley 212 that is contained in eccentric shaft 213 1 ends with 214 synchronously, eccentric shaft 213 is supported on the rear case 211 near an end of big synchronous pulley 212, the other end is supported on the output inner gear 208, the middle eccentric segment of eccentric shaft 213 is equipped with duplicate gear 210, duplicate gear 210 is near the gear and fixed annulus 209 engagements that are installed in the front case 206 of big synchronous pulley 212 1 sides, the opposite side gear of duplicate gear 210 and output inner gear 208 engagements, output inner gear 208 is installed on the output inner gear seat 207 in the front case 206 and links to each other with screw rod 204 external parts in the brake caliper assembly by spline, screw rod 204 external parts are equipped with back-up ring 218 near braking clamp body 201 1 sides, screw rod 204 not external part adopts self-locking thread to cooperate and be positioned at the non-circular hole of piston 106 with swivel nut 203, the groove that is installed in piston 106 close brake pad assembly 107 1 sides in the braking clamp body 201 cylinder holes cooperates with the boss of brake pad assembly 107, and the centre of two brake pad assemblies is equipped with brake disc 108.
Described duplicate gear 210, fixed annulus 209, output inner gear 208 and eccentric shaft 213 are formed involute planetary gear gear drive 104.
Described brake caliper assembly: comprise slip screw driving mechanism 105, piston 106, brake pad assembly 107 and the braking clamp body 201 formed by swivel nut 203 and screw rod 204.
The profile of tooth of described synchronous belt drive mechanism 103 is arc toothed.
Described involute planetary gear gear drive 104 is a 2Z-X type structure.
Described slip screw driving mechanism 105 comprises screw rod 204 and the swivel nut 203 that adopts the self-locking buttress thread form to cooperate.
Its working principle is: during service brake, high hydraulic brake fluid injects its interior cylinder hole by the filler opening on the braking clamp body 201, promotes piston 106 and brake pad assembly 107 clamping brake discs 108; When removing service brake, brake fluid returns oil storage cup from the cylinder hole of braking clamp body 201.During parking braking, direct current generator 102 is just changeing, by eccentric shaft 213 rotations that drive big synchronous pulley 212 with 214 synchronously and be fixed together with it that are fixed on the small synchronous pulley 215 on the motor shaft and cooperate with it, duplicate gear 210 is subjected to the driving of eccentric shaft 213, rotation on one side, revolve round the sun around fixed annulus 209 axis on one side, thereby driving output inner gear 208 rotates together with the screw rod 204 that links to each other by spline with it, and then make the swivel nut 203 that is subjected to piston 106 inner non-circular hole restrictions on the circumferencial direction can only axially promote piston 106 and brake pad assembly 107 clamping brake discs 108, because swivel nut 203 and screw rod 204 adopt the self-locking buttress thread form to cooperate, parking braking is safe and reliable; When removing parking braking, direct current generator 102 counter-rotatings, because screw rod 204 axially is subjected to back-up ring 218 restrictions, reciprocal displacement when swivel nut 203 produces with parking braking, the axial force that acts on the piston 106 is removed, and piston packing 202 is owing to exist resiliently deformable, reciprocal displacement when forcing piston 106 to produce a certain amount of and parking braking, recover certain clearance thereby make between brake pad assembly 107 and the brake disc 108, parking braking this moment is removed fully.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, and any structure after simple transformation on the utility model basis all belongs to protection domain of the present utility model.
Claims (3)
1. vehicle electronic brake system actuator, by transmitting set and brake caliper assembly, it is characterized in that: front case of transmitting set (206) and rear case (211) are tightly connected, form semi-enclosed housing, transmitting set links to each other with braking clamp body (201) by screw (205), direct current generator (102) is housed in the front case of transmitting set (206), small synchronous pulley (215) is housed on the output shaft of direct current generator (102), small synchronous pulley (215) links to each other with the big synchronous pulley (212) that is contained in eccentric shaft (213) one ends by being with (214) synchronously, eccentric shaft (213) is supported on the rear case (211) near an end of big synchronous pulley (212), the other end is supported on the output inner gear (208), the middle eccentric segment of eccentric shaft (213) is equipped with duplicate gear (210), duplicate gear (210) is near the gear and fixed annulus (209) engagement that is installed in the front case (206) of big synchronous pulley (212) one sides, the opposite side gear of duplicate gear (210) and output inner gear (208) engagement, output inner gear (208) is installed in that output inner gear seat (207) in the front case (206) is gone up and links to each other with screw rod (204) external part in the brake caliper assembly by spline, screw rod (204) external part is equipped with back-up ring (218) near braking clamp body (201) one sides, screw rod (204) not external part adopts self-locking thread to cooperate and be positioned at the non-circular hole of piston (106) with swivel nut (203), the groove that is installed in close brake pad assembly (107) one sides of piston (106) in braking clamp body (201) the cylinder hole cooperates with the boss of brake pad assembly (107), and the centre of two brake pad assemblies is equipped with brake disc (108).
2. vehicle electronic brake system actuator according to claim 1 is characterized in that: the profile of tooth of described synchronous band (214) and synchronous pulley is arc toothed.
3. vehicle electronic brake system actuator according to claim 3 is characterized in that: described screw rod (204) and swivel nut (203) cooperate for the self-locking buttress thread form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201844968U CN201103642Y (en) | 2007-10-19 | 2007-10-19 | Actuating mechanism of vehicle electric parking braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201844968U CN201103642Y (en) | 2007-10-19 | 2007-10-19 | Actuating mechanism of vehicle electric parking braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103642Y true CN201103642Y (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201844968U Expired - Fee Related CN201103642Y (en) | 2007-10-19 | 2007-10-19 | Actuating mechanism of vehicle electric parking braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201103642Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011814A (en) * | 2010-11-23 | 2011-04-13 | 江苏大学 | Disc brake with permanent magnet parking brake mechanism and braking method |
| CN105917133A (en) * | 2013-12-06 | 2016-08-31 | 卢卡斯汽车股份有限公司 | Motor vehicle brake which can be activated electromechanically and hydraulically and has optional self-locking |
| CN108105292A (en) * | 2016-11-24 | 2018-06-01 | 比亚迪股份有限公司 | Brake actuator, brake system of car and electric vehicle |
| CN109424665A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
-
2007
- 2007-10-19 CN CNU2007201844968U patent/CN201103642Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011814A (en) * | 2010-11-23 | 2011-04-13 | 江苏大学 | Disc brake with permanent magnet parking brake mechanism and braking method |
| CN102011814B (en) * | 2010-11-23 | 2012-11-07 | 江苏大学 | Disc brake with permanent magnet parking brake mechanism and braking method |
| CN105917133A (en) * | 2013-12-06 | 2016-08-31 | 卢卡斯汽车股份有限公司 | Motor vehicle brake which can be activated electromechanically and hydraulically and has optional self-locking |
| CN105917133B (en) * | 2013-12-06 | 2018-11-02 | 卢卡斯汽车股份有限公司 | It electromechanically and hydraulically can be activated and have the motor vehicle brake of optional self-locking |
| CN108105292A (en) * | 2016-11-24 | 2018-06-01 | 比亚迪股份有限公司 | Brake actuator, brake system of car and electric vehicle |
| CN108105292B (en) * | 2016-11-24 | 2020-05-19 | 比亚迪股份有限公司 | Brake actuator, automobile brake system and electric automobile |
| CN109424665A (en) * | 2017-08-29 | 2019-03-05 | 比亚迪股份有限公司 | Disk brake and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080820 Termination date: 20101019 |