CN110901604B - Disc type electronic central parking brake assembly - Google Patents
Disc type electronic central parking brake assembly Download PDFInfo
- Publication number
- CN110901604B CN110901604B CN201911190781.4A CN201911190781A CN110901604B CN 110901604 B CN110901604 B CN 110901604B CN 201911190781 A CN201911190781 A CN 201911190781A CN 110901604 B CN110901604 B CN 110901604B
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- China
- Prior art keywords
- piston
- parking brake
- friction plate
- dust cover
- screw rod
- Prior art date
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- 239000000428 dust Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to the field of automobile brake systems, and particularly relates to a disc type electronic central parking brake assembly which comprises a caliper body, wherein an inner friction plate and an outer friction plate are arranged on the caliper body; the caliper body is also provided with a piston cylinder body, and a piston is arranged in the piston cylinder body; the caliper body is also provided with a driving motor; the piston is internally provided with a screw mechanism, the screw mechanism comprises a threaded sleeve and a screw rod which are matched with each other, the threaded sleeve is concentrically fixed inside the piston, and the screw rod is connected with an output shaft of the driving motor 1. The parking brake device is simple in structure and strong in applicability, and improves the parking brake capability of the off-road vehicle.
Description
Technical Field
The invention belongs to the field of automobile brake systems, and particularly relates to a disc type electronic central parking brake assembly which is mainly used for special vehicles such as off-road vehicles and the like.
Background
The parking brake device is divided into a central parking brake device and a wheel parking brake device according to different installation positions on the automobile. The former brake is mounted on the transmission shaft and is called a central brake; the brake and the service brake device share one set of brake, the structure is simple and compact, and the brake is widely applied to cars.
Conventional center parking brake devices generally include a drum-type center parking brake and a disc-type center parking brake. When the drum type central parking brake is used for parking braking, a manual parking brake operating lever in a cab is pulled to a braking position, the lower end of a parking brake lever is pulled forwards through transmission of a plurality of rows of levers and a pull rope, the parking brake lever rotates around a flat head pin, a middle fulcrum of the parking brake lever pushes a brake push rod to move left, and a front brake shoe is pushed to a brake drum. After the front brake shoe is pressed against the brake drum, the push rod stops moving, and the brake lever continues to rotate around the middle fulcrum. The upper end of the brake lever is then moved to the right, pressing the rear brake shoe against the brake drum, applying the parking brake. The disc type central parking brake can refer to a disc type central parking brake assembly of a utility model patent, application number 201710098021.5, and the brake assembly comprises a brake caliper, a friction plate, a push rod assembly, a steel ball, an end cover assembly, a return spring, a pull arm assembly, a spline shaft and a sliding pin; the sliding pins are arranged in circular holes at two ends of the brake caliper; the pull arm assembly is fixed with the spline shaft; the return spring is positioned by a cylindrical pin on the pull arm assembly and fixed by a round hole on the end surface; the end cover assembly is matched with the spline shaft through a lining; the end cover assembly and the spline shaft clamp the steel balls in the corresponding fan-shaped grooves; the end cover assembly is fixed with the brake caliper; the push rod assembly is matched with the circular groove on the spline shaft; the friction plate is adsorbed together with the push rod assembly through a magnetic core on the push rod assembly. The invention can solve the problems of poor reliability of a drum-type central parking brake and overheating of travelling towing and grinding; the structure is complicated, the weight is large, the difficult problem of arrangement is difficult, and the disc type central parking brake assembly of the parking brake capability of the off-road vehicle is improved. The existing disc type central parking brake has low parking braking capacity, low reliability, low efficiency, complex structure and difficult layout.
Disclosure of Invention
The invention aims to provide a disc type electronic central parking brake assembly which is simple in structure and strong in applicability and improves the parking braking capability of off-road vehicles.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a disc type electronic central parking brake assembly comprises a caliper body 2, wherein an inner friction plate 8 and an outer friction plate 9 are arranged on the caliper body 2; the caliper body 2 is also provided with a piston cylinder body, and a piston 7 is arranged in the piston cylinder body; the method is characterized in that: the caliper body 2 is also provided with a driving motor 1; the screw rod mechanism is arranged inside the piston 7 and comprises a threaded sleeve 4 and a screw rod 3 which are matched with each other, the threaded sleeve 4 is concentrically fixed inside the piston 7, and the screw rod 3 is connected with an output shaft of the driving motor 1.
Further, the piston 7 and the piston cylinder are sealed by a rectangular ring 5.
Further, a piston dust cover 6 is arranged between one end of the piston 7 close to the inner friction plate 8 and the inner wall of the piston cylinder.
Further, one end of the piston 7 close to the inner friction plate 8 is provided with a dust cover installation groove 11 for installing the piston dust cover 6.
Further, the side wall of the piston 7 is provided with an air hole 12 for communicating the inside and the outside, and the air hole 12 is positioned between the rectangular ring 5 and the piston dust cover 6; and pressure maintaining gas is reserved in the piston dust cover 6 and is used for exchanging gas with the interior of the piston 7 through the gas hole 12.
Further, the input voltage of the driving motor 1 is 12V or 24V.
The invention has the beneficial effects that:
(1) the parking brake device is simple in structure and strong in applicability, and improves the parking brake capability of the off-road vehicle.
(2) The disc type middle sample parking brake adopts a floating caliper disc structure, a friction plate is arranged in a caliper body, a rotating part brake disc is used as a friction pair, and the motor actuating device is used for actuating the friction plate and clamping the brake disc to realize parking braking kinetic energy. Compared with the matching effect of an IPB brake and a drum brake, the EPB brake has the advantages of larger clamping force, high output efficiency and better adaptation to the 24V voltage of a special vehicle.
(3) The EPB central parking brake can be fixed at the output end of the gearbox and the transmission shaft hoisting device through the sliding pin, reduces the IPB pneumatic thrust device, and is more convenient to arrange and higher in efficiency.
(4) The invention does not need to use brake fluid, and is communicated with the atmosphere in the braking process, so that the vacuum in the braking cavity can not be formed, and the cavity is prevented from being rusted due to water inlet. The gas exchange is carried out between the perforated piston and the gas reserved in the piston dust cover, so that no vacuum is generated in the clamp body cavity. The piston dust cover and the piston are in interference fit to achieve a sealing effect. The problem that the inner cavity of the IPB in the market is easy to rust is solved.
Drawings
FIG. 1 is a cross-sectional schematic view of a disc electric center parking brake assembly.
Fig. 2 is a schematic perspective view of the piston.
In the figure: 1-driving motor, 2-clamp body, 3-screw rod, 4-thread sleeve, 5-rectangular ring, 6-piston dust cover, 7-piston, 8-inner friction plate, 9-outer friction plate, 10-clamp frame, 11-dust cover mounting groove and 12-air hole.
Detailed Description
In order to better understand the present invention, the following embodiments are further described.
As shown in fig. 1, a disc type electronic central parking brake assembly includes a caliper body 2, and an inner friction plate 8 and an outer friction plate 9 are disposed on the caliper body 2.
The caliper body 2 is also provided with a piston cylinder body, and a piston 7 is arranged in the piston cylinder body; the piston 7 and the piston cylinder body are sealed through a rectangular ring 5; and a piston dust cover 6 is arranged between one end of the piston 7 close to the inner friction plate 8 and the inner wall of the piston cylinder, and as shown in fig. 2, a dust cover mounting groove 11 is arranged at one end of the piston 7 close to the inner friction plate 8 and used for mounting the piston dust cover 6.
The side wall of the piston 7 is provided with an air hole 12 for communicating the inside and the outside, and the air hole 12 is positioned between the rectangular ring 5 and the piston dust cover 6; and pressure maintaining gas is reserved in the piston dust cover 6 and is used for exchanging gas with the interior of the piston 7 through the gas hole 12.
The caliper body 2 is also provided with a 24V driving motor 1 (matched voltage is selected according to the vehicle type); the screw rod mechanism is arranged inside the piston 7 and comprises a threaded sleeve 4 and a screw rod 3 which are matched with each other, the threaded sleeve 4 is concentrically fixed inside the piston 7, and the screw rod 3 is connected with an output shaft of the driving motor 1.
The main working principle and the working process of the disc type electronic central parking brake assembly are as follows: the ECU sends out a control command according to the vehicle state (or an external control key), and the driving motor 1 positively or reversely rotates according to the ECU command to drive the screw rod mechanism to drive the piston 7 to axially move, so that parking or parking releasing action is realized. The piston dust cover 6 and the piston 7 are in over-hard matching to achieve a sealing effect, and rust caused by water entering the cavity is prevented. However, due to the sealing, vacuum negative pressure can be formed inside the piston 7 during the axial movement of the piston 7, which affects braking. The gas exchange is carried out by adopting the piston through hole (the air hole 12) and the gas reserved in the piston dust cover 6, so that no vacuum is generated in the clamp body cavity.
The above description is only an application example of the present invention, and certainly, the present invention should not be limited by this application, and therefore, the present invention is still within the protection scope of the present invention by equivalent changes made in the claims of the present invention.
Claims (3)
1. A disc type electronic central parking brake assembly comprises a caliper body (2), wherein an inner friction plate (8) and an outer friction plate (9) are arranged on the caliper body (2); the caliper body (2) is also provided with a piston cylinder body, and a piston (7) is arranged in the piston cylinder body; the method is characterized in that: the caliper body (2) is also provided with a driving motor (1); a screw rod mechanism is arranged in the piston (7), the screw rod mechanism comprises a threaded sleeve (4) and a screw rod (3) which are matched with each other, the threaded sleeve (4) is concentrically fixed in the piston (7), and the screw rod (3) is connected with an output shaft of the driving motor (1);
the piston (7) and the piston cylinder body are sealed through a rectangular ring (5), and a piston dust cover (6) is arranged between one end, close to the inner friction plate (8), of the piston (7) and the inner wall of the piston cylinder body; the side wall of the piston (7) is provided with an air hole (12) for communicating the inside and the outside, and the air hole (12) is positioned between the rectangular ring (5) and the piston dust cover (6); and pressure maintaining gas is reserved in the piston dust cover (6) and is used for exchanging gas with the interior of the piston (7) through the gas hole (12).
2. A disc electric central parking brake assembly according to claim 1, wherein: and a dust cover mounting groove (11) is formed in one end, close to the inner friction plate (8), of the piston (7) and used for mounting a piston dust cover (6).
3. A disc electric central parking brake assembly according to claim 1, wherein: the input voltage of the driving motor (1) is 12V or 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190781.4A CN110901604B (en) | 2019-11-28 | 2019-11-28 | Disc type electronic central parking brake assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190781.4A CN110901604B (en) | 2019-11-28 | 2019-11-28 | Disc type electronic central parking brake assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110901604A CN110901604A (en) | 2020-03-24 |
| CN110901604B true CN110901604B (en) | 2022-01-07 |
Family
ID=69820209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911190781.4A Active CN110901604B (en) | 2019-11-28 | 2019-11-28 | Disc type electronic central parking brake assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110901604B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911564A (en) * | 2020-07-08 | 2020-11-10 | 中国第一汽车股份有限公司 | Independent parking EPB brake caliper device |
| CN113511176A (en) * | 2021-05-19 | 2021-10-19 | 句容市天王汽车配件制造有限公司 | Brake device for parking automobile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202851754U (en) * | 2012-10-18 | 2013-04-03 | 台州三进压铸有限公司 | Back brake caliper piston |
| CN109707771A (en) * | 2019-03-06 | 2019-05-03 | 芜湖伯特利汽车安全系统股份有限公司 | Brake caliper assy applied to electronic parking |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202441770U (en) * | 2011-12-29 | 2012-09-19 | 徐州锐马重工机械有限公司 | Brake of vehicle electronic parking brake system |
| CN104401308B (en) * | 2014-10-11 | 2017-01-25 | 北京英创汇智科技有限公司 | Method for improving reliability of EPB (electrical park brake) based on piezoelectric ceramic sensor |
| CN109083948B (en) * | 2018-11-07 | 2024-03-29 | 芜湖伯特利汽车安全系统股份有限公司 | Be applied to electronic parking braking system's brake caliper assembly |
-
2019
- 2019-11-28 CN CN201911190781.4A patent/CN110901604B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202851754U (en) * | 2012-10-18 | 2013-04-03 | 台州三进压铸有限公司 | Back brake caliper piston |
| CN109707771A (en) * | 2019-03-06 | 2019-05-03 | 芜湖伯特利汽车安全系统股份有限公司 | Brake caliper assy applied to electronic parking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110901604A (en) | 2020-03-24 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 430000 Joint Plant 3, No. 9, Zili 4th Road, Wuhan Technological Development Zone, Hubei Province Patentee after: Wanxiang (Wuhan) Intelligent Manufacturing Co.,Ltd. Country or region after: China Address before: 430000 No.2, Wuchang Avenue, Zhifang street, Jiangxia District, Wuhan City, Hubei Province Patentee before: WUHAN WANXIANG AUTOMOBILE BRAKE Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |