CN112193227A - Parking braking device, parking braking system and vehicle - Google Patents
Parking braking device, parking braking system and vehicle Download PDFInfo
- Publication number
- CN112193227A CN112193227A CN202010903674.8A CN202010903674A CN112193227A CN 112193227 A CN112193227 A CN 112193227A CN 202010903674 A CN202010903674 A CN 202010903674A CN 112193227 A CN112193227 A CN 112193227A
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- Prior art keywords
- parking brake
- gear
- rack
- brake device
- parking
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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
- 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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/58—Combined or convertible systems
-
- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Braking Arrangements (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The invention provides a parking brake device, which comprises a transmission mechanism and an operating mechanism, wherein the transmission mechanism is provided with a first connecting part, a second connecting part and a third connecting part; the switching mechanism is used for controlling the electronic operation part or the mechanical operation part to drive the transmission mechanism. The invention also provides a parking brake system. The invention also provides a vehicle. The parking brake device, the parking brake system and the vehicle can realize the braking of the vehicle by selecting different parking modes, and are more reliable.
Description
Technical Field
The invention relates to the technical field of parking braking, in particular to a parking braking device, a parking braking system and a vehicle.
Background
Along with the trend of vehicle electronization, the electronic hand brake is more and more widely popularized to manual transmission automobiles, and according to different installation positions, the electronic hand brake can be divided into a parking stay cable type and an integrated caliper type, and the two modes respectively have advantages and disadvantages.
However, due to the structural characteristics of the electronic parking, the electronic parking usually only works in a low-speed area, once a dangerous situation occurs at a high speed, only hydraulic braking is used or a gear is lowered, and if the hydraulic braking is also failed, the electronic parking is very dangerous; in addition, if an electrical failure occurs, the parking may not be performed or the parking may not be released.
Therefore, how to provide a solution to solve the above drawbacks remains a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a parking brake device which can freely select mechanical parking or electronic parking and improve the reliability of vehicle parking. Another object of the present invention is to provide a parking brake system, which has high reliability and can realize parking or parking release in time. Another object of the present invention is to provide a vehicle with a parking brake system having high reliability.
In order to solve the technical problems, the invention provides a parking brake device, which comprises a transmission mechanism and an operating mechanism, wherein the transmission mechanism is provided with a first connecting part, a second connecting part and a third connecting part, the operating mechanism comprises a mechanical operating part and an electronic operating part, the first connecting part is used for being connected with a parking brake cable, the second connecting part is connected with the mechanical operating part, the third connecting part is connected with the electronic operating part, and the mechanical operating part or the electronic operating part can drive the transmission mechanism to move so as to drive the parking brake cable to brake a vehicle; the switching mechanism is used for controlling the electronic operation part or the mechanical operation part to drive the transmission mechanism.
The parking brake device is provided with two control mechanisms of a mechanical control part and an electronic control part, has two functions of mechanical parking and electronic parking, is also provided with a switching mechanism, can freely select the mechanical control part or the electronic control part to drive the transmission mechanism, and can drive the transmission mechanism through the mechanical control part once the electronic parking function fails due to various factors, so that the parking of the whole vehicle cannot be influenced, the parking safety of the whole vehicle is ensured, and the parking reliability of the vehicle is improved.
Optionally, the transmission mechanism includes a rack-and-pinion transmission unit, the rack-and-pinion transmission unit includes a rack and a gear, both ends of the rack are respectively and axially connected with a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod respectively form the first connecting portion and the second connecting portion, and the gear forms the third connecting portion.
Optionally, the electronic operating part comprises a driving motor for driving the gear to rotate, and a speed reducing unit arranged between the driving motor and the gear, wherein the speed reducing unit is used for reducing the rotating speed of the gear and increasing the torque of the gear.
Optionally, the reduction unit includes worm gear unit, worm gear unit includes assorted worm wheel and worm, the worm with driving motor connects, the worm wheel with gear fixed connection, the worm wheel can drive the synchronous rotation of gear, just the number of teeth of gear is less than the number of teeth of worm wheel.
Optionally, the electronic operating part further comprises a reduction gearbox for accommodating the reduction unit, the switching mechanism comprises a switching cable arranged on the reduction gearbox, and the switching cable can drive the reduction gearbox, the reduction unit and the gear to move in the vertical direction so as to enable the gear to be meshed with or separated from the rack.
Optionally, the device further comprises an encapsulating shell, and the conveying mechanism and the electronic operating part are both encapsulated inside the encapsulating shell.
Optionally, the energy storage device further comprises an elastic component arranged between the reduction gearbox and the packaging shell, and when the gear is separated from the rack, the elastic component is in an energy storage state.
Optionally, the two sides of the speed reduction box are provided with sliding blocks, the inner side of the bottom wall of the packaging shell is provided with a sliding rail extending in the vertical direction at a position corresponding to the speed reduction box, and the speed reduction box is mounted on the sliding rail through the sliding blocks and can move in the vertical direction along the sliding rail.
Optionally, the lower end of the sliding rail is provided with a limiting block, and when the gear is meshed with the rack, the bottom wall of the reduction gearbox is abutted to the limiting block.
The invention also provides a parking brake system which comprises a brake, a parking brake cable and the parking brake device, wherein the brake, the parking brake cable and the parking brake device are sequentially connected, and the parking brake cable is connected with the first connecting part of the transmission mechanism.
The parking brake system comprises the parking brake device, two operating mechanisms of a mechanical operating part and an electronic operating part are arranged at the same time, the parking brake system has two functions of mechanical parking and electronic parking, a switching mechanism is further arranged, the mechanical operating part or the electronic operating part is freely selected to drive the transmission mechanism, once the electronic parking function fails due to various factors, the transmission mechanism can be driven through the mechanical operating part, the parking of the whole vehicle cannot be influenced, the parking safety of the whole vehicle is guaranteed, and the parking reliability of the vehicle is improved.
The invention further provides a vehicle which comprises a vehicle body and the parking brake system.
The vehicle comprises the parking braking system, wherein the parking braking device is simultaneously provided with two control mechanisms of a mechanical control part and an electronic control part, and has two functions of mechanical parking and electronic parking, and the parking braking system is also provided with a switching mechanism which can freely select the mechanical control part or the electronic control part to drive the transmission mechanism.
Drawings
FIG. 1 is a schematic structural diagram of a parking brake mechanism according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of the parking brake mechanism of FIG. 1;
wherein, each reference numeral in fig. 1 and fig. 2 is:
1-driving a motor; 2-worm gear unit; 21-a worm; 22-a worm gear; 3-a rack and pinion transmission unit; 31-a gear; 32-a rack; 33-a first connecting rod; 4-a mechanical manipulation section; 5-a reduction gearbox; 6-switching the guy cable; 7-a spring; 8-a slide rail; 9-a limiting block.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a parking brake mechanism according to an embodiment of the present invention; FIG. 2 is a partial schematic view of the parking brake mechanism of FIG. 1.
The invention provides a parking brake device, which comprises a transmission mechanism and an operating mechanism, wherein the transmission mechanism is provided with a first connecting part, a second connecting part and a third connecting part, the operating mechanism comprises a mechanical operating part 4 and an electronic operating part, the first connecting part is used for being connected with a parking brake cable, the second connecting part is connected with the mechanical operating part 4, the third connecting part is connected with the electronic operating part, and the mechanical operating part 4 or the electronic operating part can drive the transmission mechanism to move so as to drive the parking brake cable to brake a vehicle; the device also comprises a switching mechanism which is used for controlling the electric operation part or the mechanical operation part 4 to drive the transmission mechanism.
The parking brake device is provided with two control parts, namely a mechanical control part 4 and an electronic control part, and has two functions of mechanical parking and electronic parking, and is also provided with a switching mechanism, the transmission mechanism is driven by freely selecting the mechanical control part 4 or the electronic control part, once the electronic parking function fails due to various factors, the transmission mechanism can be driven by the mechanical control part 4, and the parking of the whole vehicle is not influenced, so that the parking safety and the reliability of the whole vehicle are ensured.
Referring to fig. 1 and 2, in the present embodiment, the transmission mechanism includes a rack-and-pinion transmission unit 3, the rack-and-pinion transmission unit 3 includes a rack 32 and a gear 31, two ends of the rack 32 are respectively and axially connected with a first connection rod 33 and a second connection rod, the first connection rod 33 and the second connection rod respectively form the first connection portion and the second connection portion, which are respectively used for being connected with the parking brake cable and the mechanical operation portion 4, the gear 31 forms a third connection portion, which is connected with the electronic operation portion, when the electronic parking function is selected, the electronic operation portion can drive the gear 31 to rotate, so as to drive the rack 32 to move along the axial direction, and then the first connection rod 33 drives the parking brake cable to move, and the vehicle is braked by controlling the brake; when the mechanical parking function is selected, the gear 31 can be driven to be separated from the rack 32 through the switching mechanism, and the rack 32 is driven to move along the axial direction through the mechanical operation part 4, so that the vehicle is braked;
in practical application, the transmission mechanism can drive the parking brake cable to move linearly except for the gear rack transmission unit 3.
Referring to fig. 2, the electronic operating part of the present invention includes a driving motor 1 for driving the gear to rotate, and a deceleration unit disposed between the driving motor 1 and the gear 31, wherein the deceleration unit is used for reducing the rotation speed of the gear 31, increasing the torque of the gear 31, ensuring the precise control of the moving distance of the rack 32 during the braking process, and improving the sensitivity and reliability of the transmission unit and the parking brake.
In practical application, the reduction unit can be the speed reducer of lug connection in driving motor 1 output shaft or the reduction unit of other forms, specifically to in this embodiment, the reduction unit includes worm gear unit 2, worm gear unit 2 includes assorted worm wheel 22 and worm 21, worm 21 is connected with driving motor 1, worm wheel 22 and gear 31 fixed connection, specifically through connecting axle fixed connection, worm wheel 22 can drive gear 31 synchronous rotation, and the number of teeth of gear 31 is less than the number of teeth of worm wheel 22.
In the embodiment, the worm and gear unit 2 is arranged between the driving motor 1 and the rack and pinion transmission unit 3, on one hand, the number of teeth of the gear 31 is smaller than that of the worm wheel 22, so that the speed reduction function of the driving motor 1 can be realized; on the other hand, only when the worm 21 is rotated, the worm wheel 22 can be passively rotated, otherwise, transmission cannot be achieved, so that mechanism self-locking can be achieved, the reliability of the mechanism is improved, in addition, due to the self-locking characteristic of the worm wheel and worm unit 2, after the electronic parking reaches the required parking force, the driving motor 1 can be powered off, and energy is saved.
In practical application, a person skilled in the art can design the gear ratio between the gear 31 and the worm wheel 22 according to actual use requirements, so as to ensure not only the speed reduction function, the sensitivity of brake control, but also the transmission efficiency.
In practical application, the speed reduction unit may be a ball screw unit in addition to the worm gear unit 2, and the ball screw unit can also achieve the speed reduction function, and also has a mechanism self-locking function, so as to ensure the reliability of the device.
Further, the electronic operation part further comprises a reduction gearbox 5 for accommodating the speed reduction unit, the switching mechanism comprises a switching cable 6 arranged on the reduction gearbox 5, the switching cable 6 can drive the reduction gearbox 5, the speed reduction unit arranged in the reduction gearbox 5 and a gear 31 fixedly connected with a worm wheel 22 in the speed reduction unit to move along the vertical direction, so that the gear 31 is meshed with or separated from the rack 32.
By arranging the reduction gearbox 5, on one hand, the effects of mounting and protecting the reduction unit are achieved; on the other hand, the switching inhaul cable 6 is fixed, the switching inhaul cable 6 drives the whole reduction gearbox 5 to move in the vertical direction, connection or disconnection between the electronic operation part and the transmission mechanism is achieved, specifically, when the transmission mechanism needs to be driven through the electronic operation part, the switching inhaul cable 6 can be controlled to move downwards, and then the whole reduction gearbox 5 is driven to move downwards, so that the gear 31 and the rack 32 are located at a theoretical meshing position; when the transmission mechanism needs to be driven by the mechanical operation part 4, the switching inhaul cable 6 can be controlled to move upwards, and then the reduction gearbox 5 is driven to move upwards integrally, so that the gear 31 is separated from the rack 32, the electronic operation part fails at the moment, and the rack 32 can be directly driven by the mechanical operation part 4.
The control of the switching cable 6 can be implemented in various ways, for example, the control can be performed manually, specifically, a corresponding control rod can be arranged in the cab and connected with the switching cable 6, and the driver can control the control rod to realize the movement of the switching cable 6 in the vertical direction; in addition, the driving mechanism may be an electronic control mode, specifically, a driving component capable of directly generating a linear position such as an air cylinder, a hydraulic oil cylinder, an electric cylinder, and the like may be provided and connected to the switching cable 6, or a driving component capable of generating a rotational displacement such as a motor may be provided and matched with a corresponding transmission component to convert a rotational motion of the motor into a linear motion of the switching cable 6 in the vertical direction. In practical applications, a person skilled in the art can select a suitable control mode according to actual requirements.
The parking brake device also comprises an encapsulation shell, and the transmission mechanism and the electronic operation part are encapsulated in the encapsulation shell. The packaging shell plays roles of dust prevention, integration and protection of all parts, and reliability and service life of all parts are improved.
In addition, the invention also comprises an elastic part arranged between the reduction gearbox 5 and the packaging shell, and when the gear 31 is separated from the rack 32, the elastic part is in an energy storage state. By arranging the elastic part, on one hand, when the gear 31 is meshed with the rack 32, the reduction gearbox 5 is fixed at a theoretical position through the elastic part, and normal meshing of the gear 31 and the rack 32 is ensured; on the other hand, when the gear 31 and the rack 32 are disengaged and the meshing state needs to be restored, the reduction gearbox 5 can move downwards under the restoring force of the elastic component, so that the gear 31 and the rack 32 return to the theoretical meshing position, and the transmission reliability of the rack-and-pinion transmission unit 3 is improved.
Referring to fig. 1, in the present embodiment, the elastic component is two springs 7, one end of each spring 7 is engaged with the top wall of the reduction box 5, the other end is engaged with the enclosure, and when the gear 31 and the rack 32 are disengaged, the springs 7 are compressed to store energy.
Of course, in practical application, the position and the number of the springs 7 are not limited, as long as the above functions can be realized, and the reduction gearbox 5 can be ensured to be in the theoretical position under two working states.
Besides the spring 7, the elastic member may be an elastic element in various forms such as a ball spring, a tensile cord, or the like, as long as the above-described technical effects can be achieved.
Referring to fig. 1, the two sides of the reduction gearbox 5 are provided with slide blocks, the inner side of the bottom wall of the enclosure casing is provided with slide rails 8 extending in the vertical direction at positions corresponding to the reduction gearbox 5, and the reduction gearbox 5 is mounted on the slide rails 8 through the slide blocks and can move in the vertical direction along the slide rails 8. The arrangement can ensure that the movement tracks of the gear 31 and the rack 32 in the disengaging or engaging process are controllable and reliable, accurately position the relative positions of the gear 31 and the rack 32 in the disengaging or engaging process, ensure the transmission reliability and further improve the reliability of the parking brake device.
In addition, the lower end of the slide rail 8 is also provided with a limit block 9, and when the gear 31 is meshed with the rack 32, the bottom wall of the reduction gearbox 5 is abutted against the limit block 9.
By arranging the limiting block 9, the gear 31 and the rack 32 can be located at a theoretical position when being meshed, so that the meshing gap between the gear 31 and the rack 32 can be accurately positioned, and the transmission of the gear rack transmission unit 3 is more reliable.
The invention also provides a parking brake system which comprises a brake, a parking brake cable and the parking brake device, wherein the brake, the parking brake cable and the parking brake device are sequentially connected, and the parking brake cable is specifically connected with a first connecting part of a transmission mechanism in the parking brake device.
The parking brake system of the present invention includes the parking brake device, and therefore has the same technical effects as the parking brake device, and will not be described herein again.
The invention further provides a vehicle which comprises a vehicle body and the parking brake system.
The vehicle of the present invention includes the parking brake system, and therefore has the same technical effects as the parking brake system, and will not be described herein again.
The parking brake device, the parking brake system and the vehicle provided by the present invention are described in detail above, and the principle and the embodiment of the present invention are explained herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method of the present invention and the core idea thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (11)
1. A parking brake device characterized in that: the parking brake cable is characterized by comprising a transmission mechanism and an operating mechanism, wherein the transmission mechanism is provided with a first connecting part, a second connecting part and a third connecting part, the operating mechanism comprises a mechanical operating part (4) and an electronic operating part, the first connecting part is used for being connected with a parking brake cable, the second connecting part is connected with the mechanical operating part (4), the third connecting part is connected with the electronic operating part, and the mechanical operating part (4) or the electronic operating part can drive the transmission mechanism to move so as to drive the parking brake cable to brake a vehicle;
the switching mechanism is used for controlling the electronic operation part or the mechanical operation part (4) to drive the transmission mechanism.
2. The parking brake device according to claim 1, characterized in that: the transmission mechanism comprises a gear and rack transmission unit (3), the gear and rack transmission unit (3) comprises a gear (31) and a rack (32) which are matched, two ends of the rack (32) are respectively and axially connected with a first connecting rod (33) and a second connecting rod, the first connecting rod (33) and the second connecting rod are respectively formed into a first connecting part and a second connecting part, and the gear (31) is formed into a third connecting part.
3. The parking brake device according to claim 2, characterized in that: the electronic operation part comprises a driving motor (1) for driving the gear (31) to rotate, and a speed reduction unit arranged between the driving motor (1) and the gear (31), wherein the speed reduction unit is used for reducing the rotating speed of the gear (31) and improving the torque of the gear (31).
4. The parking brake device according to claim 3, characterized in that: the reduction unit includes worm gear unit (2), worm gear unit (2) include assorted worm wheel (22) and worm (21), worm (21) with driving motor (1) is connected, worm wheel (22) with gear (31) fixed connection, worm wheel (22) can drive gear (31) synchronous rotation, just the number of teeth of gear (31) is less than the number of teeth of worm wheel (22).
5. The parking brake device according to claim 4, characterized in that: the electronic operation part further comprises a reduction gearbox (5) used for accommodating the reduction unit, the switching mechanism comprises a switching inhaul cable (6) arranged on the reduction gearbox (5), and the switching inhaul cable (6) can drive the reduction gearbox (5), the reduction unit and the gear (31) to move along the vertical direction, so that the gear (31) is meshed with or separated from the rack (32).
6. The parking brake device according to claim 5, characterized in that: the electronic control device is characterized by further comprising a packaging shell, wherein the transmission mechanism and the electronic control part are packaged in the packaging shell.
7. The parking brake device according to claim 6, characterized in that: the energy storage device is characterized by further comprising an elastic part arranged between the reduction gearbox (5) and the packaging shell, and when the gear (31) is separated from the rack (32), the elastic part is in an energy storage state.
8. The parking brake device according to claim 6, characterized in that: the two sides of the reduction gearbox (5) are provided with sliding blocks, the inner side of the bottom wall of the packaging shell is provided with a sliding rail (8) which extends in the vertical direction at a position corresponding to the reduction gearbox (5), and the reduction gearbox (5) is installed on the sliding rail (8) through the sliding blocks and can move in the vertical direction along the sliding rail (8).
9. The parking brake device according to claim 8, characterized in that: the lower end of the sliding rail (8) is provided with a limiting block (9), and when the gear (31) is meshed with the rack (32), the bottom wall of the reduction gearbox (5) is abutted to the limiting block (9).
10. A parking brake system characterized by: the parking brake device comprises a brake, a parking brake cable and the parking brake device of any one of claims 1 to 9, wherein the brake and the parking brake cable are connected in sequence, and the parking brake cable is connected with the first connecting part of the transmission mechanism.
11. A vehicle, characterized in that: comprising a vehicle body and a parking brake system according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010903674.8A CN112193227A (en) | 2020-09-01 | 2020-09-01 | Parking braking device, parking braking system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010903674.8A CN112193227A (en) | 2020-09-01 | 2020-09-01 | Parking braking device, parking braking system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112193227A true CN112193227A (en) | 2021-01-08 |
Family
ID=74005205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010903674.8A Pending CN112193227A (en) | 2020-09-01 | 2020-09-01 | Parking braking device, parking braking system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112193227A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112810586A (en) * | 2021-01-20 | 2021-05-18 | 清华大学 | Commercial car stopper actuation module and braking system |
-
2020
- 2020-09-01 CN CN202010903674.8A patent/CN112193227A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112810586A (en) * | 2021-01-20 | 2021-05-18 | 清华大学 | Commercial car stopper actuation module and braking system |
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