Electronic parking structure, transmission, parking control system and automobile

Abstract

The invention provides an electronic parking structure, a transmission, a parking control system and an automobile. The electronic parking structure comprises a shell, an adjusting mechanism, a pawl and a parking ratchet wheel. The shell is used for mounting the driving motor; the parking ratchet wheel is arranged on an output shaft of the driving motor in a sleeving manner; the first end of the adjusting mechanism is fixed to the shell, the second end of the adjusting mechanism is connected with the first end of the pawl, the second end of the pawl and the parking ratchet wheel are oppositely arranged, and the adjusting mechanism is used for controlling the pawl to be meshed with or separated from the parking ratchet wheel. In the driving state, the adjusting mechanism controls the pawl to be separated from the parking ratchet wheel, the parking ratchet wheel rotates along with the output shaft of the driving motor, the electronic mechanical braking system transmits power through the driving motor, wheel braking is achieved, and the braking performance of driving is met; in the parking state, the adjusting mechanism controls the pawl to be meshed with the parking ratchet wheel, and the parking ratchet wheel is locked, so that the output shaft of the driving motor is locked, wheels are locked, and the normal parking function is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile electric control braking, and in particular relates to an electronic parking structure, a transmission, a parking control system and an automobile. Background Art

[0002] The automobile braking system is to slow down and stop the moving vehicle in a short time, and to achieve stable parking at the same time. The parking system is an important part of the automobile braking system, which is a safety device to prevent the vehicle from sliding under special working conditions. The earliest vehicle parking brake system adopted the traditional mechanical transmission method, which was realized by the driver manually operating the brake handle. With the development of braking technology, the electronic parking brake system has been proposed and successfully applied, with the advantages of high safety, good stability and better experience. The electronic parking brake system (EPB) is composed of a main control module, sensors and integrated parking actuators. It is currently mainly integrated in the rear brake system assembly to play the role of safe parking. The electronic parking brake system will combine the state of the vehicle, and the controller will calculate the braking force required for the rear wheels, and control the wheel-end actuator to provide the clamping force to support.

[0003] The electronic mechanical brake system (EMB) is a new generation of wire-controlled brake system. EMB eliminates the traditional mechanical connection part and mainly transmits the braking system through the communication harness. It has the characteristics of fast response, low cost, high safety and stability. EMB mainly uses the motor as the driving source, and converts the output torque of the motor into the driving force for the master cylinder piston through the deceleration and torque increase mechanism and the motion conversion mechanism, thereby establishing hydraulic pressure in the brake master cylinder. Since EMB is still in the research and development stage and has no mass production results, the research on EMB has always been a key technology in the field of automotive braking. At the same time, the parking mechanism integrated with EMB has not been clearly proposed.

[0004] The existing electronic parking structure parts are relatively complex, requiring a special motor and transmission mechanism, which is costly and cannot be perfectly combined with the EMB actuator, resulting in a large layout space. Summary of the invention

[0005] The present invention provides an electronic parking structure, a transmission, a parking control system and a car to solve the problems that the existing electronic parking structure has complex parts, requires a special motor and a transmission mechanism, and has a high cost; and cannot be perfectly combined with an EMB actuator, resulting in a large layout space.

[0006] An electronic parking structure comprises a housing, an adjustment mechanism, a pawl and a parking ratchet;

[0007] The housing is used to install the drive motor;

[0008] The parking ratchet is sleeved on the output shaft of the driving motor;

[0009] The first end of the adjusting mechanism is fixed on the housing, the second end of the adjusting mechanism is connected to the first end of the pawl, the second end of the pawl is arranged opposite to the parking ratchet, and the adjusting mechanism is used to control the engagement or separation of the pawl with the parking ratchet.

[0010] Preferably, the adjustment mechanism comprises a first adjustment component and a second adjustment component arranged along the radial direction of the parking ratchet;

[0011] The first end of the first adjustment assembly is connected to the first end of the pawl, and is used to drive the pawl to move outward along the radial direction of the parking ratchet so as to separate the pawl from the parking ratchet;

[0012] The first end of the second adjusting component is connected to the second end of the first adjusting component, and the second end of the second adjusting component is connected to the housing, for driving the pawl to move inward along the radial direction of the parking ratchet so that the pawl engages with the parking ratchet.

[0013] Preferably, the first regulating component is a solenoid valve, comprising a solenoid valve body and a solenoid valve core;

[0014] The solenoid valve body is connected to the shell, the solenoid valve core is arranged in the solenoid valve body, and the solenoid valve body is connected to an external power supply to control the solenoid valve core to move outward along the radial direction of the parking ratchet to separate the pawl from the parking ratchet.

[0015] Preferably, the second adjustment component is a return spring, a first end of the return spring is connected to the housing, and a second end of the return spring is connected to the first adjustment component;

[0016] The return spring controls the pawl to move inwardly along the radial direction of the parking ratchet so that the pawl engages with the parking ratchet.

[0017] Preferably, the adjustment mechanism further comprises a fixing seat; one end of the fixing seat is fixed in the shell, and the other end of the fixing seat is connected to the second adjustment component.

[0018] Preferably, the housing comprises a first body, a connecting portion extending outwardly from an outer side of one end of the first body along a radial direction of the first body, and a second body extending from an outer edge of the connecting portion along an axial direction of the first body;

[0019] The driving motor is assembled in the first body, and the first end of the adjusting mechanism is connected to the inner wall of the second body.

[0020] A transmission, comprising the electronic parking structure, a drive motor and a driving transmission gear;

[0021] The driving transmission gear is assembled on the output shaft of the driving motor, and the driving transmission gear is located outside the parking ratchet.

[0022] A parking control system, comprising the transmission and the controller;

[0023] The controller is connected to the adjustment mechanism in the electronic parking structure and is used to control the adjustment mechanism to work so that the pawl is engaged with or disengaged from the parking ratchet wheel.

[0024] Preferably, the parking control system further comprises an electronic parking switch connected to the controller, and the controller controls the operation of the regulating mechanism according to the working state of the electronic parking switch.

[0025] A car comprises the parking control system.

[0026] In the present invention, the shell serves as a basic component for installing a driving motor, and the driving motor is an EMB motor for transmitting braking force. The parking ratchet is also installed in the shell, and the parking ratchet is rigidly connected to the output shaft of the driving motor. The first end of the adjusting mechanism is fixed to the shell, the second end of the adjusting mechanism is connected to the first end of the pawl, and the second end of the pawl is arranged opposite to the parking ratchet. The adjusting mechanism is used to control the engagement or disengagement of the pawl with the parking ratchet. In the driving state, the adjustment mechanism controls the pawl to separate from the parking ratchet, and the parking ratchet rotates with the output shaft of the drive motor. The electronic mechanical brake system (EMB) transmits power through the drive motor to achieve wheel braking and meet the braking performance of driving; in the parking state, the adjustment mechanism controls the pawl to engage with the parking ratchet, and the parking ratchet is locked, thereby locking the output shaft of the drive motor, locking the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor, that is, the EMB actuator, and does not require a special motor and transmission mechanism, which reduces the cost, and the parts are simple, the layout space is small, and the wire control driving and parking functions are met. The parking ratchet is rigidly riveted with the output shaft of the drive motor, and the parking ratchet locks the output shaft of the drive motor in the parking state. The parking ratchet rotates synchronously with the output shaft of the drive motor in the driving state; the parking ratchet and the pawl are engaged through the tooth surface, and the end face of the pawl in the parking state is engaged with the tooth surface of the parking ratchet, and the end face of the pawl in the driving state is separated from the tooth surface of the parking ratchet. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional diagram of the electronic parking structure of the present invention;

[0028] Figure 2 is a cross-sectional view of the electronic parking structure of the present invention;

[0029] Figure 3 is a first state diagram of the regulating mechanism in the present invention;

[0030] Figure 4 It is the second state diagram of the regulating mechanism in the present invention.

[0031] Among them, 1. Shell; 11. First body; 12. Connecting part; 13. Second body; 2. Driving motor; 21. Output shaft; 3. Adjusting mechanism; 31. First adjusting component; 311. Solenoid valve body; 312. Solenoid valve core; 32. Second adjusting component; 33. Fixed seat; 4. Ratchet; 5. Parking ratchet; 6. Driving transmission gear. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The embodiment of the present invention provides an electronic parking structure, referring to Figure 1-4The electronic parking structure includes a shell 1, an adjusting mechanism 3, a pawl 4 and a parking ratchet 5; the shell 1 is used to install the driving motor 2; the parking ratchet 5 is sleeved on the output shaft 21 of the driving motor 2; the first end of the adjusting mechanism 3 is fixed to the shell 1, the second end of the adjusting mechanism 3 is connected to the first end of the pawl 4, the second end of the pawl 4 is arranged opposite to the parking ratchet 5, and the adjusting mechanism 3 is used to control the engagement or separation of the pawl 4 and the parking ratchet 5.

[0036] As an example, the housing 1 is used as a base member for mounting the driving motor 2. The driving motor 2 is an EMB motor for transmitting braking force. The parking ratchet 5 is also mounted in the housing 1, and the parking ratchet 5 is rigidly connected to the output shaft 21 of the driving motor 2. The first end of the adjusting mechanism 3 is fixed to the housing 1, and the second end of the adjusting mechanism 3 is connected to the first end of the pawl 4, and the second end of the pawl 4 is arranged opposite to the parking ratchet 5. The adjusting mechanism 3 is used to control the engagement or disengagement of the pawl 4 and the parking ratchet 5. In the driving state, the adjusting mechanism 3 controls the pawl 4 to separate from the parking ratchet 5, and the parking ratchet 5 rotates with the output shaft 21 of the driving motor 2. The electronic mechanical braking system (EMB) transmits power through the driving motor 2 to achieve wheel braking, thereby meeting the braking performance of driving; in the parking state, the adjusting mechanism 3 controls the pawl 4 to engage with the parking ratchet 5, and the parking ratchet 5 is locked, thereby locking the output shaft 21 of the driving motor 2, achieving locking of the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the driving motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces costs, and has simple parts and a small layout space, meeting the wire-controlled driving and parking functions. The parking ratchet 5 is rigidly riveted to the output shaft 21 of the driving motor 2. In the parking state, the parking ratchet 5 locks the output shaft 21 of the driving motor 2. In the driving state, the parking ratchet 5 and the output shaft 21 of the driving motor 2 rotate synchronously. The parking ratchet 5 and the pawl 4 are meshed through the tooth surface. In the parking state, the end face of the pawl 4 is meshed with the tooth surface of the parking ratchet 5, and in the driving state, the end face of the pawl 4 is separated from the tooth surface of the parking ratchet 5.

[0037] The electronic parking structure in this embodiment can be integrated with the drive motor 2 in the EMB actuator, with a smaller layout space, higher safety, and lower costs. Compared with the existing parking structure, it is expected to reduce costs by 500-600 yuan per vehicle. The control principle is reliable and the response is fast, and EMB automatic parking can be realized, while preventing the drive motor 2 from stalling, overheating, and damage.

[0038] In one embodiment, referring to Figure 1-4The adjustment mechanism 3 includes a first adjustment component 31 and a second adjustment component 32 arranged along the radial direction of the parking ratchet 5; the first end of the first adjustment component 31 is connected to the first end of the pawl 4, and is used to drive the pawl 4 to move outward along the radial direction of the parking ratchet 5 so that the pawl 4 is separated from the parking ratchet 5; the first end of the second adjustment component 32 is connected to the second end of the first adjustment component 31, and the second end of the second adjustment component 32 is connected to the housing 1, and is used to drive the pawl 4 to move inward along the radial direction of the parking ratchet 5 so that the pawl 4 is engaged with the parking ratchet 5.

[0039] As an example, the adjustment mechanism 3 includes a first adjustment component 31 and a second adjustment component 32, which are arranged along the radial direction of the parking ratchet 5. The first adjustment component 31 and the second adjustment component 32 cooperate to drive the pawl 4 to move along the radial direction of the parking ratchet 5, so that the pawl 4 is separated from or engaged with the parking ratchet 5. When the electronic parking structure is in the driving state, the first adjustment component 31 drives the pawl 4 to move outward along the radial direction of the parking ratchet 5, so that the pawl 4 is separated from the parking ratchet 5, and the normal driving function is ensured; when the electronic parking structure is in the parking state, the second adjustment component 32 drives the first adjustment component 31 and the pawl 4 to move inward along the radial direction of the parking ratchet 5, so that the pawl 4 is engaged with the parking ratchet 5, and the parking ratchet 5 is locked and immovable, thereby locking the output shaft 21 of the drive motor 2, realizing the locking of the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces costs, and has simple parts and a small layout space, meeting the wire-controlled driving and parking functions.

[0040] In one embodiment, referring to Figure 1-4 The first regulating component 31 is a solenoid valve, including a solenoid valve body 311 and a solenoid valve core 312; the solenoid valve body 311 is connected to the housing 1, the solenoid valve core 312 is arranged in the solenoid valve body 311, and the solenoid valve body 311 is connected to an external power supply to control the solenoid valve core 312 to move outward along the radial direction of the parking ratchet 5 to separate the pawl 4 from the parking ratchet 5.

[0041] As an example, the first regulating component 31 is introduced as a solenoid valve, including a solenoid valve body 311 and a solenoid valve core 312. The solenoid valve body 311 is connected to the shell 1, and the solenoid valve core 312 is arranged in the solenoid valve body 311. Under the action of the solenoid valve body 311, the solenoid valve core 312 can move in the solenoid valve body 311. The pawl 4 is rigidly connected to the solenoid valve core 312. The solenoid valve body 311 is connected to an external power supply to control the solenoid valve core 312 to move outward along the radial direction of the parking ratchet 5 to separate the pawl 4 from the parking ratchet 5. In the driving state, the coil of the solenoid valve body 311 is in the energized state, and the solenoid valve core 312 and the pawl 4 move outward in the radial direction of the parking ratchet 5 under the action of the electromagnetic force of the solenoid valve body 311, and the pawl 4 is separated from the parking ratchet 5 to ensure the normal driving function; when the first adjustment component 31 is arranged above the parking ratchet 5, in the parking state, the coil of the solenoid valve body 311 is de-energized, and the solenoid valve body 311 has no electromagnetic force. The solenoid valve core 312 and the pawl 4 move inward in the radial direction of the parking ratchet 5 under the action of gravity or under the action of the second adjustment component 32, and the pawl 4 is engaged with the parking ratchet 5, and the parking ratchet 5 is locked and immovable, thereby locking the output shaft 21 of the drive motor 2, realizing the locking of the wheel and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces costs, and has simple parts and a small layout space. It meets the wire-controlled driving and parking functions, and performs parking control by turning on and off the solenoid valve, and the technology is relatively mature.

[0042] In one embodiment, referring to Figure 1-4 The second adjustment component 32 is a return spring, the first end of the return spring is connected to the housing 1, and the second end of the return spring is connected to the first adjustment component 31; the return spring controls the pawl 4 to move inward along the radial direction of the parking ratchet 5 so that the pawl 4 engages with the parking ratchet 5.

[0043] As an example, the second adjusting component 32 is introduced as a return spring, the first end of the return spring is connected to the housing 1, and the second end of the return spring is connected to the first adjusting component 31. The elastic force of the return spring is used to control the pawl 4 to move inward along the radial direction of the parking ratchet 5 so that the pawl 4 engages with the parking ratchet 5; specifically, the second end of the return spring is connected to the solenoid valve body 311, and the return spring cooperates with the solenoid valve to control the pawl 4 to move along the radial direction of the parking ratchet 5 so that the pawl 4 engages with or disengages from the parking ratchet 5. In the driving state, the coil of the solenoid valve body 311 is energized, and the pawl 4 and the solenoid valve core 312 overcome the spring force of the return spring and move outward along the radial direction of the parking ratchet 5 under the electromagnetic force of the solenoid valve body 311, and the pawl 4 is separated from the parking ratchet 5 to ensure the normal driving function; in the parking state, the coil of the solenoid valve body 311 is de-energized, and the solenoid valve body 311 has no electromagnetic force. The pawl 4 moves inward along the radial direction of the parking ratchet 5 under the spring force of the return spring, and the pawl 4 and the parking ratchet 5 are meshed with each other, and the parking ratchet 5 is locked, thereby locking the output shaft 21 of the drive motor 2, realizing locking the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces the cost, and has simple parts and a small layout space, meets the wire-controlled driving and parking functions, and performs parking control by turning the solenoid valve on and off, and the technology is relatively mature.

[0044] In one embodiment, referring to Figure 1-4 The adjustment mechanism 3 also includes a fixing seat 33 ; one end of the fixing seat 33 is fixed in the housing 1 , and the other end of the fixing seat 33 is connected to the second adjustment component 32 .

[0045] As an example, it is introduced that the adjustment mechanism 3 also includes a fixed seat 33, which is arranged between the shell 1 and the second adjustment component 32, so as to facilitate the installation of the second adjustment component 32 (i.e., the return spring) on ​​the shell 1, and ensure that the second adjustment component 32 (i.e., the return spring) can be stably deformed, so that the pawl 4 moves smoothly.

[0046] In one embodiment, referring to Figure 1 and Figure 2 The shell 1 includes a first body 11, a connecting portion 12 extending from the outer side of one end of the first body 11 along the radial direction of the first body 11, and a second body 13 extending from the outer edge of the connecting portion 12 along the axial direction of the first body 11; the driving motor 2 is assembled in the first body 11, and the first end of the adjusting mechanism 3 is connected to the inner wall of the second body 13.

[0047] As an example, it is introduced that the shell 1 includes a first main body 11, a connecting part 12 and a second main body 13. The drive motor 2 is assembled in the first main body 11. The first main body 11 serves as a support to provide an installation position and protection for the drive motor 2. The connecting part 12 extends from the outer side of one end of the first main body 11 along the radial direction of the first main body 11. The second main body 13 extends from the outer edge of the connecting part 12 along the axial direction of the first main body 11. The connecting part 12 and the second main body 13 cooperate to expand the accommodating space of the shell 1. The first end of the adjusting mechanism 3 is connected to the inner wall of the second main body 13, and the adjusting mechanism 3 is placed separately from the drive motor 2 to avoid interference between the two, so as to facilitate the control of the working state of the output shaft 21 of the drive motor 2 through the adjusting mechanism 3; the adjusting mechanism 3 may not be in contact with the connecting part 12. With the connecting part 12 as a reference, the adjusting mechanism 3 moves along the radial direction of the connecting part 12 to control the pawl 4 to engage or disengage with the parking ratchet 5. Preferably, the adjusting mechanism 3 and the connecting part 12 can also be made to contact each other, or a guide slide can be provided between the adjusting mechanism 3 and the connecting part 12 to provide a moving guide for the adjusting mechanism 3 to move along the radial direction of the connecting part 12, so as to more conveniently control the engagement or disengagement of the pawl 4 and the parking ratchet 5.

[0048] The embodiment of the present invention provides a transmission, referring to Figure 1-4 , including an electronic parking structure, a driving motor 2 and a driving transmission gear 6 ; the driving transmission gear 6 is assembled on the output shaft 21 of the driving motor 2 , and the driving transmission gear 6 is located on the outside of the parking ratchet 5 .

[0049] As an example, it is introduced that the driving transmission gear 6 is assembled on the output shaft 21 of the driving motor 2, and the driving transmission gear 6 is located on the outside of the parking ratchet 5, the housing 1 is used as a basic component to install the driving motor 2, the driving motor 2 is an EMB motor for transmitting braking force, the parking ratchet 5 is also installed in the housing 1, and the parking ratchet 5 is rigidly connected to the output shaft 21 of the driving motor 2, the first end of the adjusting mechanism 3 is fixed on the housing 1, the second end of the adjusting mechanism 3 is connected to the first end of the pawl 4, the second end of the pawl 4 is arranged opposite to the parking ratchet 5, and the adjusting mechanism 3 is used to control the engagement or disengagement of the pawl 4 with the parking ratchet 5. In the driving state, the adjusting mechanism 3 controls the pawl 4 to separate from the parking ratchet 5, and the parking ratchet 5 rotates with the output shaft 21 of the driving motor 2. The electronic mechanical braking system (EMB) transmits power through the driving motor 2 to achieve wheel braking, thereby meeting the braking performance of driving; in the parking state, the adjusting mechanism 3 controls the pawl 4 to engage with the parking ratchet 5, and the parking ratchet 5 is locked, thereby locking the output shaft 21 of the driving motor 2, achieving locking of the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the driving motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces costs, and has simple parts and a small layout space, meeting the wire-controlled driving and parking functions. The parking ratchet 5 is rigidly riveted to the output shaft 21 of the driving motor 2. In the parking state, the parking ratchet 5 locks the output shaft 21 of the driving motor 2, and in the driving state, the parking ratchet 5 rotates synchronously with the output shaft 21 of the driving motor 2; the parking ratchet 5 is meshed with the pawl 4 through the tooth surface, and the end face of the pawl 4 is meshed with the tooth surface of the parking ratchet 5 in the parking state, and the end face of the pawl 4 is separated from the tooth surface of the parking ratchet 5 in the driving state.

[0050] The electronic parking structure in this embodiment can be integrated with the drive motor 2 in the EMB actuator, with a smaller layout space, higher safety, and lower costs. Compared with the existing parking structure, it is expected to reduce costs by 500-600 yuan per vehicle. The control principle is reliable and the response is fast, and EMB automatic parking can be realized, while preventing the drive motor 2 from stalling, overheating, and damage.

[0051] The embodiment of the present invention provides a parking control system, referring to Figure 1-4 , including a transmission and a controller; the controller is connected to the adjustment mechanism 3 in the electronic parking structure, and is used to control the adjustment mechanism 3 to work so that the pawl 4 is engaged or disengaged with the parking ratchet 5.

[0052] As an example, a control system is introduced, which includes a transmission and a controller. The controller is connected to an adjusting mechanism 3 in an electronic parking structure and is used to control the operation of the adjusting mechanism 3. The controller outputs a control signal according to a received signal. The adjusting mechanism 3 moves along the radial direction of the parking ratchet 5 according to the control signal to make the pawl 4 engage or disengage with the parking ratchet 5. In the driving state, the adjusting mechanism 3 moves outward along the radial direction of the parking ratchet 5, and the pawl 4 is disengaged from the parking ratchet 5 to ensure the normal driving function; in the parking state, the adjusting mechanism 3 moves inward along the radial direction of the parking ratchet 5, and the pawl 4 is engaged with the parking ratchet 5, and the parking ratchet 5 is locked and immovable, thereby locking the output shaft 21 of the drive motor 2, realizing locking the wheel and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor 2 in the EMB actuator, does not require a special motor and a transmission mechanism, reduces the cost, and has simple parts and a small layout space, which meets the wire-controlled driving and parking functions.

[0053] In one embodiment, the parking control system further includes an electronic parking switch connected to the controller, and the controller controls the operation of the regulating mechanism 3 according to the working state of the electronic parking switch.

[0054] As an example, it is introduced that the parking control system also includes an electronic parking switch connected to the controller. The controller outputs a control signal according to the working state of the electronic parking switch being started or released. The adjusting mechanism 3 moves along the radial direction of the parking ratchet 5 according to the control signal to make the pawl 4 engage or disengage with the parking ratchet 5. In the driving state, the adjusting mechanism 3 moves outward along the radial direction of the parking ratchet 5, and the pawl 4 is separated from the parking ratchet 5 to ensure the normal driving function; in the parking state, the adjusting mechanism 3 moves inward along the radial direction of the parking ratchet 5, and the pawl 4 and the parking ratchet 5 are engaged with each other, and the parking ratchet 5 is locked and immovable, thereby locking the output shaft 21 of the drive motor 2, realizing locking the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces the cost, and has simple parts and a small layout space, which meets the wire-controlled driving and parking functions.

[0055] As an example, the adjustment mechanism 3 includes a first adjustment component 31 and a second adjustment component 32 arranged along the radial direction of the parking ratchet 5; the first adjustment component 31 is a solenoid valve, including a solenoid valve body 311 and a solenoid valve core 312; the solenoid valve body 311 is connected to the shell 1, and the solenoid valve core 312 is arranged in the solenoid valve body 311, and the solenoid valve body 311 is connected to an external power supply, and the solenoid valve core 312 is controlled to move outward along the radial direction of the parking ratchet 5 to separate the pawl 4 from the parking ratchet 5; the second adjustment component 32 is a return spring, the first end of the return spring is connected to the shell 1, and the second end of the return spring is connected to the first adjustment component 31; the return spring controls the pawl 4 to move inward along the radial direction of the parking ratchet 5 to engage the pawl 4 with the parking ratchet 5. In this example, the user can control the electronic parking switch to start or release according to the actual situation, so that the controller outputs a control signal according to the working state of the electronic parking switch to control the power-on state of the solenoid valve body 311. Specifically, when the control signal is the start of the electronic parking switch, the solenoid valve body 311 is powered off; when the control signal is the release of the electronic parking switch, the solenoid valve body 311 is powered on. When the solenoid valve body 311 is in the power-on state, the solenoid valve body 311 can control the solenoid valve core 312 and the pawl 4 to move along the radial direction of the parking ratchet 5, so that the pawl 4 is engaged with or separated from the parking ratchet 5. When the solenoid valve body 311 is powered off, under the elastic force of the return spring, the solenoid valve core 312 and the pawl 4 move inward along the radial direction of the parking ratchet 5, and the pawl 4 engages with the parking ratchet 5; when the solenoid valve body 311 is powered on, under the electromagnetic force of the solenoid valve body 311, the solenoid valve core 312 and the pawl 4 move inward along the radial direction of the parking ratchet 5, and the pawl 4 separates from the parking ratchet 5.

[0056] In this example, according to actual conditions, the user can control the electronic parking switch to start or release. When the electronic parking switch is started, the controller outputs a signal to control the solenoid valve body 311 to cut off the power. Under the elastic force of the return spring, the solenoid valve core 312 and the pawl 4 move inward along the radial direction of the parking ratchet 5, and the pawl 4 engages with the parking ratchet 5 to realize the electronic parking function; when the electronic parking switch is released, the controller outputs a signal to control the solenoid valve body 311 to be energized. Under the electromagnetic force of the solenoid valve body 311, the elastic force of the return spring is overcome, and the solenoid valve core 312 and the pawl 4 move inward along the radial direction of the parking ratchet 5, and the pawl 4 is separated from the parking ratchet 5 to realize the driving function.

[0057] An embodiment of the present invention provides a car, including a parking control system.

[0058] As an example, the controller is connected to the adjustment mechanism 3 in the electronic parking structure, which is used to control the operation of the adjustment mechanism 3. The controller can output a control signal according to actual conditions. The adjustment mechanism 3 moves along the radial direction of the parking ratchet 5 according to the control signal to make the pawl 4 engage or disengage with the parking ratchet 5. In the driving state, the adjustment mechanism 3 moves outward along the radial direction of the parking ratchet 5, and the pawl 4 is separated from the parking ratchet 5 to ensure the normal driving function; in the parking state, the adjustment mechanism 3 moves inward along the radial direction of the parking ratchet 5, and the pawl 4 is engaged with the parking ratchet 5, and the parking ratchet 5 is locked and immovable, thereby locking the output shaft 21 of the drive motor 2, locking the wheel, and ensuring the normal parking function. Compared with the existing electronic parking structure, the electronic parking structure in this example is integrated with the drive motor 2 in the EMB actuator, does not require a special motor and transmission mechanism, reduces the cost, and has simple parts and a small layout space, which meets the wire-controlled driving and parking functions.

[0059] In this example, according to actual conditions, the user can control the electronic parking switch to start or release. When the electronic parking switch is started, the controller outputs a signal to control the solenoid valve body 311 to cut off the power. Under the elastic force of the return spring, the solenoid valve core 312 and the pawl 4 move inward along the radial direction of the parking ratchet 5, and the pawl 4 engages with the parking ratchet 5 to realize the electronic parking function; when the electronic parking switch is released, the controller outputs a signal to control the solenoid valve body 311 to be energized. Under the electromagnetic force of the solenoid valve body 311, the elastic force of the return spring is overcome, and the solenoid valve core 312 and the pawl 4 move inward along the radial direction of the parking ratchet 5, and the pawl 4 is separated from the parking ratchet 5 to realize the driving function.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic parking structure, characterized in that: It includes a housing, an adjustment mechanism, a pawl and a parking ratchet; The housing is used to install the drive motor; The parking ratchet is sleeved on the output shaft of the driving motor; The first end of the adjusting mechanism is fixed on the housing, the second end of the adjusting mechanism is connected to the first end of the pawl, the second end of the pawl is arranged opposite to the parking ratchet, and the adjusting mechanism is used to control the engagement or separation of the pawl with the parking ratchet.

2. The electronic parking structure according to claim 1, characterized in that: The adjustment mechanism includes a first adjustment component and a second adjustment component arranged along the radial direction of the parking ratchet; The first end of the first adjustment assembly is connected to the first end of the pawl, and is used to drive the pawl to move outward along the radial direction of the parking ratchet so as to separate the pawl from the parking ratchet; The first end of the second adjusting component is connected to the second end of the first adjusting component, and the second end of the second adjusting component is connected to the housing, for driving the pawl to move inward along the radial direction of the parking ratchet so that the pawl engages with the parking ratchet.

3. The electronic parking structure according to claim 2, characterized in that: The first regulating component is a solenoid valve, comprising a solenoid valve body and a solenoid valve core; The solenoid valve body is connected to the shell, the solenoid valve core is arranged in the solenoid valve body, and the solenoid valve body is connected to an external power supply to control the solenoid valve core to move outward along the radial direction of the parking ratchet to separate the pawl from the parking ratchet.

4. The electronic parking structure according to claim 2, characterized in that: The second adjusting component is a return spring, a first end of the return spring is connected to the housing, and a second end of the return spring is connected to the first adjusting component; The return spring controls the pawl to move inwardly along the radial direction of the parking ratchet so that the pawl engages with the parking ratchet.

5. The electronic parking structure according to claim 2, characterized in that: The adjustment mechanism further comprises a fixing seat; one end of the fixing seat is fixed in the shell, and the other end of the fixing seat is connected to the second adjustment component.

6. The electronic parking structure according to claim 1, characterized in that: The housing comprises a first body, a connecting portion extending outwardly from an outer side of one end of the first body in a radial direction of the first body, and a second body extending from an outer edge of the connecting portion in an axial direction of the first body; The driving motor is assembled in the first body, and the first end of the adjusting mechanism is connected to the inner wall of the second body.

7. A transmission, characterized in that: The electronic parking structure, the driving motor and the driving transmission gear according to any one of claims 1 to 6 are included; The driving transmission gear is assembled on the output shaft of the driving motor, and the driving transmission gear is located outside the parking ratchet.

8. A parking control system, characterized in that: The transmission and controller comprising claim 7; The controller is connected to the adjustment mechanism in the electronic parking structure and is used to control the adjustment mechanism to work so that the pawl is engaged with or disengaged from the parking ratchet wheel.

9. The parking control system according to claim 8, characterized in that: The parking control system further comprises an electronic parking switch connected to the controller, and the controller controls the operation of the regulating mechanism according to the working state of the electronic parking switch.

10. An automobile, characterized in that: Including the parking control system described in any one of claims 8-9.

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