Electronic parking device and motor vehicle

Abstract

The embodiment of the present application provides an electronic parking device and a motor vehicle, the electronic parking device comprises: a body seat; a locking piece arranged on the body seat; a sliding block arranged on the body seat and connected with a gear box push rod, and the sliding block is provided with a locking matching part; the sliding block is configured to slide to approach the locking piece when not parking, so that the locking matching part and the locking piece are engaged, and slide to move away from the locking piece when parking, so that the locking matching part and the locking piece are separated; a locking structure arranged on the body seat is configured to lock the locking piece on the locking matching part when not parking, and release the locking effect on the locking piece when parking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor vehicles, in particular to an electronic parking device and a motor vehicle. BACKGROUND

[0002] The electronic parking module is used to make the vehicle stably park on various road surfaces when the vehicle stops without being turned off. In the related art, the electronic parking module mostly adopts worm gear structure transmission, mainly relying on the self-locking of the worm gear to make the vehicle remain in the non-parking state. Since the transmission friction of the worm gear structure is large and easy to wear, the reliability of the electronic parking module in the non-parking state is insufficient and there is a risk of failure. SUMMARY

[0003] The electronic parking device and the motor vehicle provided by the embodiments of the present application can improve the reliability in the non-parking state.

[0004] In one aspect, the present application provides an electronic parking device, comprising: a body seat; a locking member arranged on the body seat; a sliding block arranged on the body seat and connected with a gear shift lever, the sliding block being provided with a locking matching part; the sliding block being configured to slide to approach the locking member in the non-parking state to make the locking matching part and the locking member engage, and slide to move away from the locking member in the parking state to make the locking matching part and the locking member separate; and a locking structure arranged on the body seat and configured to lock the locking member on the locking matching part in the non-parking state and release the locking effect on the locking member in the parking state.

[0005] In some embodiments, the electronic parking device comprises a driving element, a reduction gear mechanism and a cam mechanism, the reduction gear mechanism comprising an input gear, a plurality of double gear stages and an output gear which are sequentially engaged, the input gear being connected with the driving element, the output gear being connected with the cam mechanism, and the cam mechanism being connected with the sliding block.

[0006] In some embodiments, the cam mechanism comprises a cam shaft, a cam and a driven shaft, the output gear and the cam being arranged on the cam shaft, the cam shaft and the driven shaft being arranged in parallel, and the driven shaft being connected with the sliding block.

[0007] In some embodiments, the electronic parking device further comprises a Hall sensor, the cam shaft being provided with a corner magnet, and the Hall sensor and the corner magnet being arranged in parallel to sense the rotation position of the cam shaft.

[0008] In some embodiments, the cam is provided with a self-locking position, when the cam contacts and matches with the driven shaft at the self-locking position and the electronic parking device is powered off, the cam mechanism realizes self-locking.

[0009] In some embodiments, the electronic parking device further comprises a sliding seat arranged on the body seat, and a sliding block slidably retained on the sliding seat; and a return spring arranged between the sliding block and the sliding seat, wherein the elastic extension direction of the return spring is parallel to the sliding direction of the sliding block.

[0010] In some embodiments, the sliding seat is provided with a spring mounting portion, which comprises a guide groove sub-portion and a guide sub-shaft portion formed in the guide groove sub-portion, and the return spring is arranged in the guide groove sub-portion and sleeved on the guide sub-shaft portion.

[0011] In some embodiments, the sliding seat comprises an upper cover plate, a middle guide plate and a lower cover plate arranged in sequence, the upper cover plate is provided with an upper recessed portion and an upper guide sub-shaft portion formed in the upper recessed portion, the lower cover plate is provided with a lower recessed portion and a lower guide sub-shaft portion formed in the lower recessed portion, the recessed direction of the upper recessed portion is opposite to the recessed direction of the lower recessed portion, and the upper recessed portion and the lower recessed portion jointly form the guide groove sub-portion; the upper guide sub-shaft portion extends outward from the bottom of the upper recessed portion along the recessed direction of the lower recessed portion, the lower guide sub-shaft portion extends outward from the bottom of the lower recessed portion along the recessed direction of the upper recessed portion, and the upper guide sub-shaft portion and the lower guide sub-shaft portion are arranged in a spaced manner to jointly form the guide sub-shaft portion.

[0012] In some embodiments, the locking structure is an electromagnetic telescopic rod, which is extended to tightly press the locking piece on the locking matching portion when not parking, and is retracted to release the pressing action on the locking piece when parking.

[0013] In some embodiments, the locking matching portion is a recessed portion, and the locking piece is a pawl; when the sliding block and the pawl are in contact, the sliding block slides in a direction approaching the pawl to make the pawl swingingly embedded in the recessed portion, and slides in a direction away from the pawl to make the pawl swingingly disengaged from the recessed portion, and the locking structure is configured to tightly press and lock the pawl when the pawl is embedded in the recessed portion.

[0014] In some embodiments, the electronic parking device further comprises a pawl shaft extending in a horizontal direction, which is arranged on the body seat in an interference manner, and the pawl is sleeved on the pawl shaft in a clearance fit manner.

[0015] In some embodiments, the slider and the locking structure are arranged on opposite sides of the pawl along the swinging direction of the pawl, a fitting end of the pawl near the slider is formed to be fitted with the recess, and an acting end of the pawl near the locking structure is formed to bear the locking action.

[0016] In some embodiments, the electronic parking device further comprises a Hall sensor, and a position magnet is arranged on the slider, the Hall sensor and the position magnet are arranged in a spaced manner to sense the current position of the slider.

[0017] In another aspect, the embodiments of the present application provide a motor vehicle comprising a gear lever and the electronic parking device according to any one of the above embodiments.

[0018] The embodiments of the present application can make the slider reliably remain stationary at the locking position by the locking force provided by the locking structure, drive the gear lever to correspondingly remain at the non-parking gear, and further make the motor vehicle reliably remain at the non-parking state, by arranging the slider, the locking member and the locking structure, first making the slider slide to approach the locking member based on the non-parking instruction, and then making the locking member and the locking fitting part remain locked by the locking member being locked to the locking fitting part under the driving of the locking structure based on the locking instruction. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0020] Figure 1 is an exploded structural view of the electronic parking device provided by some embodiments of the present application;

[0021] Figure 2 is a partial structural view of the electronic parking device provided by some embodiments of the present application;

[0022] Figure 3 is another partial structural view of the electronic parking device provided by some embodiments of the present application;

[0023] Figure 4 is still another partial structural view of the electronic parking device provided by some embodiments of the present application;

[0024] Figure 5This is another partial structural diagram of the electronic parking device provided in some embodiments of this application;

[0025] Figure 6 This is another partial structural diagram of the electronic parking device provided in some embodiments of this application;

[0026] Explanation of key component symbols:

[0027] 1-Body base, 2-Locking element, 211-Mating end, 212-Actuating end, 22-Pawl shaft, 3-Slider, 31-Locking mating part, 32-Spring mating groove part, 33-Flange part, 34-Bearing mounting hole, 35-Mating ear part, 4-Locking structure, 51-Driving element, 52-Reduction gear mechanism, 521-Input end gear, 522-Double gear, 522a-First stage double gear, 522b-Second stage double gear, 523-Output end gear, 531-Camshaft, 532-Cam, 533-Driven shaft 534-Corner magnet, 535-First magnet seat, 536-Ball bearing, 6-Sliding seat, 61-Upper cover plate, 611-Upper recess, 612-Upper guide shaft, 62-Middle guide plate, 621-Guide cavity, 6211-Matching groove, 63-Lower cover plate, 631-Lower recess, 632-Lower guide shaft, 71-Reset spring, 72-Position magnet, 73-Second magnet seat, 74-Linear pull rod, 81-Controller, 82-First connector, 83-Second connector, 91-Upper shell, 92-Lower shell. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0031] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0032] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0033] like Figure 1As shown, this application embodiment provides an electronic parking device, which includes a body base 1, a locking member 2, a slider 3, and a locking structure 4, which can improve reliability when not parked. Here, the electronic parking device can be applied to various motor vehicles with transmissions, and this application embodiment does not limit this application. Corresponding to the switching between the parking state and the normal driving state of the motor vehicle, the electronic parking device has a parking mode and a non-parking mode. When the electronic parking device receives a parking command, it switches to parking mode, enabling the motor vehicle to be stably parked on the road surface; when it receives a non-parking command, it switches to non-parking mode, allowing the motor vehicle to be released from parking and driven normally.

[0034] Here, the main body 1 is the structural base of the electronic parking brake, suitable for mounting functional structural components such as the aforementioned locking element 2, slider 3, and locking structure 4. The locking element 2 is provided on the main body 1 and can lock the slider 3 when not parked.

[0035] The slider 3 is mounted on the main body 1 and connected to the gearbox push rod, allowing the slider 3 to move the gearbox push rod and thus shift the gearbox push rod into the corresponding gear. The slider 3 is provided with a locking engagement part 31, which can engage with the locking member 2 in the locked position to achieve position locking. When not parked, the slider 3 slides closer to the locking member 2 based on the non-parking command, causing the locking engagement part 31 to slide synchronously and gradually approach the locking member 2 in the locked position, and then engage with the locking member 2; while parked, the slider 3 slides away from the locking member 2 based on the parking command, causing the locking engagement part 31 and the locking member 2 to gradually separate, and then disengage from the engaged state.

[0036] The locking structure 4 is mounted on the main body 1 and is configured to lock the locking member 2 onto the locking engagement part 31 when the vehicle is not parked, and to release the locking effect on the locking member 2 when the vehicle is parked. In other words, when the vehicle is not parked, after the slider 3 slides to the locked position and engages the locking engagement part 31 and the locking member 2, the locking structure 4 applies a locking force to the locking member 2 based on the locking command enable, thereby keeping the locking member 2 and the locking engagement part 31 locked. In this way, the locking force provided by the locking structure 4 can reliably keep the slider 3 stationary in the locked position, thereby driving the gearbox push rod to remain in the non-parking gear position, and thus enabling the motor vehicle to reliably remain in the non-parking state and drive normally. When the vehicle is parked, the locking structure 4 releases the locking effect on the locking member 2 based on the parking command. The locking member 2 and the locking mating part 31 lose the locking force and return to a free state. The slider 3 can slide away from the locking member 2, causing the locking mating part 31 and the locking member 2 to separate and release the locking state. This allows the slider 3 to drive the gearbox push rod to shift into the parking gear, thereby enabling the motor vehicle to reliably remain in the parking state.

[0037] In the non-parking state, the electronic parking device provided in this application first causes the slider 3 to slide close to the locking member 2 based on the non-parking command. The locking engagement part 31 on the slider 3 engages with the locking member 2. Then, the locking structure 4 applies a locking force to the locking member 2 based on the locking command, keeping the locking member 2 and the locking engagement part 31 locked. The locking force provided by the locking structure 4 makes the slider 3 reliably remain stationary in the locked position, driving the gearbox push rod to remain in the non-parking gear, thereby enabling the motor vehicle to be reliably kept in the non-parking state. Compared with the worm gear self-locking structure of related technologies, the above-mentioned electronic parking device adopts the active enabling locking structure 4, in which the locking member 2 locks the locking engagement part 31 under the drive of the locking structure 4. This can avoid the transmission friction and wear problem of the worm gear structure and has higher reliability.

[0038] like Figures 1-2 As shown, in some embodiments, the electronic parking device may include a drive element 51, a reduction gear mechanism 52, and a cam mechanism. The reduction gear mechanism 52 includes an input gear 521, a multi-stage double gear 522, and an output gear 523 that mesh sequentially. The input gear 521 is connected to the drive element 51, the output gear 523 is connected to the cam mechanism, and the cam mechanism is connected to the slider 3.

[0039] Here, the type of drive element 51 can be determined according to actual needs, and can be such as a drive motor or a hydraulic motor, etc., which is not limited in this embodiment. Here, the double gear 522 has two gear parts arranged coaxially and spaced apart; taking the reduction gear mechanism 52 with two stages of double gear 522 as an example, one gear part of the first stage double gear 522a meshes with the input end gear 521, the other gear part meshes with one gear part of the second stage double gear 522b, and the other gear part of the second stage double gear 522b meshes with the output end gear 523.

[0040] When the electronic parking brake receives a non-parking command, the drive element 51 rotatably drives the input gear 521 to rotate. The input gear 521 sequentially drives the multi-stage double gear 522 and the output gear 523 to rotate. The cam mechanism converts the circular motion of the output gear 523 into the linear motion of the slider 3, thus achieving the purpose of driving the slider 3. When the slider 3 slides to the locked position where the locking engagement part 31 and the locking member 2 engage, the drive element 51 can temporarily stop rotating, keeping the slider 3 in the locked position. This allows the locking structure 4 to be enabled and apply a locking force to the locking member 2, thus keeping the locking member 2 and the locking engagement part 31 locked. Using a reduction gear mechanism 52 for transmission can improve transmission efficiency and increase the transmission capacity and reliability of the transmission structure.

[0041] likeFigure 3 As shown, in some examples, the electronic parking brake may also include a sliding seat 6 and a return spring 71. The sliding seat 6 is disposed on and fixedly connected to the main body 1, and the slider 3 is slidably held on the sliding seat 6. The return spring 71 is disposed between the slider 3 and the sliding seat 6, and the elastic extension direction of the return spring 71 is parallel to the sliding direction of the slider 3.

[0042] When the electronic parking brake receives a non-parking command and drives the slider 3 to slide close to the locking member 2, the slider 3 and the sliding seat 6 move relative to each other synchronously, causing the return spring 71 to deform elastically and accumulate elastic potential energy. After the slider 3 slides to the locking position where the locking engagement part 31 and the locking member 2 are engaged, and the locking structure 4 locks the locking member 2 onto the locking engagement part 31, the drive element 51 can continue to rotate and drive the cam mechanism to rotate back to the initial position. After that, the drive element 51 can stop rotating and keep the cam mechanism in the initial position.

[0043] When the electronic parking brake receives a parking command, the locking structure 4 releases its locking action on the locking member 2 based on the parking command, causing the locking member 2 and the locking mating part 31 to lose their locking force and return to a free state. At this time, the return spring 71 resets and releases its elastic potential energy, causing the slider 3 to slide away from the locking member 2 under the drive of the return spring 71, thus separating the locking mating part 31 from the locking member 2 and releasing the locked state. In this way, the elastic action of the return spring 71 can be used to achieve rapid reset of the slider 3, thereby realizing a rapid switch from non-parking mode to parking mode.

[0044] The structure of the sliding seat 6 can be determined according to actual needs, and this application embodiment does not limit it. In some examples, the sliding seat 6 may be provided with a guide cavity 621. The slider 3 can be disposed in the guide cavity 621 and perform linear reciprocating motion along the extension direction of the guide cavity 621. For example, the slider 3 is provided with a mating ear 35, and the guide cavity 621 is provided with a mating groove 6211. The mating ear 35 is slidably held in the mating groove 6211, and the sliding stroke of the slider 3 is limited by the sliding engagement of the mating ear 35 and the mating groove 6211; here, the mating groove 6211 is formed on one side wall of the guide cavity 621 in the direction perpendicular to its extension direction.

[0045] In some examples, the slide seat 6 may be provided with a spring mounting portion, which may include a guide groove portion and a guide shaft portion formed within the guide groove portion. A return spring 71 is disposed within the guide groove portion and sleeved on the guide shaft portion, and the return spring 71 is then connected to the slider 3. Here, the extending direction of the guide shaft portion, the extending direction of the guide groove portion, and the sliding direction of the slider 3 are set to be consistent, ensuring that the elastic extension direction of the return spring 71 is parallel to the sliding direction of the slider 3. For example, when the slide seat 6 also provides the aforementioned guide cavity portion 621, the extending direction of the guide shaft portion, the extending direction of the guide groove portion, and the extending direction of the guide cavity portion 621 are set to be consistent, thereby ensuring that the elastic extension direction of the return spring 71 is parallel to the sliding direction of the slider 3.

[0046] For example, the slider 3 is provided with a spring mating groove 32, and the spring mating groove 32 has flanges 33 at its opposite ends along its extension direction. The extension direction of the spring mating groove 32, the extension direction of the flanges 33, and the extension direction of the guide cavity 621 are consistent. The return spring 71 is embedded in the spring mating groove 32, and the two ends of the return spring 71 are respectively fitted onto the flanges 33.

[0047] For example, the sliding seat 6 may include an upper cover plate 61, a middle guide plate 62, and a lower cover plate 63 stacked sequentially. Here, the guide cavity 621 may be disposed separately on the middle guide plate 62; or, the guide cavity 621 may be formed by the upper cover plate 61, the middle guide plate 62, and the lower cover plate 63.

[0048] The upper cover plate 61 is provided with an upper recess 611 and an upper guide shaft portion 612 formed in the upper recess 611. The upper guide shaft portion 612 extends outward from the bottom of the upper recess 611, and the extending direction of the upper guide shaft portion 612 is opposite to the concave direction of the upper recess 611. The lower cover plate 63 is provided with a lower recess 631 and a lower guide shaft portion 632 formed in the lower recess 631. The lower guide shaft portion 632 extends outward from the bottom of the lower recess 631, and the extending direction of the lower guide shaft portion 632 is opposite to the concave direction of the lower recess 631.

[0049] Here, the concave direction of the upper recess 611 is opposite to that of the lower recess 631, allowing the upper recess 611 and the lower recess 631 to enclose and form a guide groove. The bottoms of the upper recess 611 and the lower recess 631 are positioned opposite each other to form the opposite side walls of the guide groove. The upper guide shaft 612 and the lower guide shaft 632 are spaced apart and together form the guide shaft, making it easy to mount the return spring 71. Based on the structure of the sliding seat 6 described above, the sliding structure can be made relatively compact and small, and easy to assemble and disassemble.

[0050] like Figure 1 and Figure 4 As shown, in some examples, the cam mechanism may include a camshaft 531, a cam 532, and a driven shaft 533. An output gear 523 and a cam 532 are spaced apart on the camshaft 531, and the output gear 523 can drive the cam 532 to rotate synchronously via the camshaft 531. The driven shaft 533 is connected to the slider 3, and when the cam 532 drives the driven shaft 533 to move linearly, the driven shaft 533 can further drive the slider 3 to slide synchronously. Here, the camshaft 531 and the driven shaft 533 can be arranged in parallel, making the cam mechanism more compact, and consequently, making the electronic parking device more compact and small. For example, the slider 3 may have a bearing mounting hole 34, within which a ball bearing 536 is installed, and the driven shaft 533 passes through the ball bearing 536.

[0051] For example, the electronic parking brake may further include a Hall sensor, and an angle magnet 534 is provided on the camshaft 531. The Hall sensor and the angle magnet 534 are spaced apart to sense the rotational position of the camshaft 531. For instance, when the camshaft 531 rotates to a position corresponding to the Hall sensor, the angle magnet 534 is located at the sensing position of the Hall sensor, allowing the Hall sensor to generate an induced voltage, thereby realizing the sensing and measurement of the current position of the camshaft 531, and then performing feedback control. For example, the electronic parking brake may further include a first magnet holder 535, on which the angle magnet 534 is fixed, and the first magnet holder 535 is fixedly connected to the camshaft 531. In this way, when the camshaft 531 rotates, the cam 532, the first magnet holder 535, and the angle magnet 534 rotate synchronously with the camshaft 531, so that the angle magnet 534 can reflect the current position of the cam 532.

[0052] For example, the cam 532 may be provided with a self-locking position. When the cam 532 is in the self-locking position and in contact with the driven shaft 533, and the electronic parking brake is de-energized, the cam mechanism achieves self-locking. In particular, even with the aforementioned return spring 71, the cam 532 in the self-locking position is sufficient to overcome the elastic force of the return spring 71 and perform self-locking. Thus, during the assembly or disassembly of the motor vehicle, since the cam mechanism is in the self-locking mode, safe assembly and disassembly can be performed conveniently.

[0053] The type of locking structure 4 can be determined according to actual needs, and can be such as an electrostrictive structure, etc., but this application does not limit this. Figure 1As shown, in some embodiments, the locking structure 4 can be an electromagnetic telescopic rod. When energized, the electromagnetic telescopic rod generates an electromagnetic field, causing the telescopic rod portion to extend or retract under electromagnetic influence; when de-energized, the electromagnetic telescopic rod loses its electromagnetic field, causing the telescopic rod portion to lose its electromagnetic influence and retract or extend. Thus, the electromagnetic telescopic rod can extend when not parked to press the locking member 2 against the locking engagement part 31, and retract when parked to release the pressing action on the locking member 2.

[0054] In some examples, the electromagnetic telescopic rod can be configured to be energized when not parked and de-energized when parked. In this way, when not parked, the electromagnetic telescopic rod remains energized, ensuring a reliable output of the locking force in the non-parking mode, thus guaranteeing the reliability of the vehicle in the non-parking mode. When parked, the electromagnetic telescopic rod is directly de-energized and quickly retracts, separating from the locking element 2. This rapidly removes the locking force originally applied to the locking element 2, avoiding motion interference and ensuring the sensitivity of the locking engagement 31 and the locking element 2 in unlocking.

[0055] The structure of the locking member 2 can be determined according to actual needs, and this application embodiment does not limit it. In some embodiments, the locking mating part 31 can be a recessed part, and the locking member 2 can be a pawl. When the slider 3 and the pawl are in contact, the slider 3 can slide in a direction close to the pawl so that the pawl swings into the recessed part under the contact force of the slider 3, and can also slide in a direction away from the pawl so that the pawl swings out of the recessed part under the contact force of the slider 3. The locking structure 4 is configured to press and lock the pawl when it is embedded in the recessed part. The type of recessed part can be determined according to actual needs, and can be such as a groove or a hole. This application embodiment does not limit it.

[0056] In some examples, the electronic parking brake may also include a pawl shaft 22 extending horizontally. The pawl shaft 22 is interference-fitted onto the body seat 1, while the pawl is clearance-fitted onto the pawl shaft 22, allowing the pawl to swing relative to the pawl shaft 22. Since the pawl shaft 22 extends horizontally, the swing direction and trajectory of the pawl lie in a vertical plane; thus, when no external force is applied, the pawl maintains a natural downward state based on its own weight, placing it at the lowest point of its swing stroke. When the slider 3 slides to the area below the pawl, it ensures that the slider 3 and the pawl quickly and reliably make contact, thereby achieving locking and unlocking. Furthermore, when the slider 3 slides in a direction close to the pawl, causing the pawl to swing, the pawl can quickly slide into the recess based on its own weight, rapidly achieving a mating engagement between the pawl and the recess.

[0057] In some examples, the slider 3 and the locking structure 4 can be positioned on opposite sides of the pawl along its swing direction. Here, the end of the pawl near the slider 3 can form a mating end 211 that engages with the recess, while the end of the pawl near the locking structure 4 can form an actuating end 212 that bears the locking action. When locked, the mating end 211 is embedded in the recess, and the locking structure 4 acts on the actuating end 212, thereby pressing the mating end 211 against the recess.

[0058] like Figure 5 As shown, in some embodiments, the electronic parking device may further include a Hall sensor, and a position magnet 72 is provided on the slider 3. The Hall sensor and the position magnet 72 are spaced apart to sense the current position of the slider 3. For example, when the slider 3 slides to the position corresponding to the Hall sensor, the position magnet 72 is located at the sensing position of the Hall sensor, so that the Hall sensor can generate an induced voltage, thereby realizing the sensing measurement of the current position of the slider 3, and then performing feedback control.

[0059] In some examples, the electronic parking brake may also include a fixedly connected second magnet base 73 and linear lever 74, with a position magnet 72 fixed to the second magnet base 73, and the linear lever 74 fixedly connected to the slider 3. Thus, when the slider 3 slides linearly, the linear lever 74 slides synchronously with the slider 3, thereby causing the second magnet base 73 and the position magnet 72 to slide synchronously, enabling the position magnet 72 to reflect the current position of the slider 3.

[0060] like Figure 1 As shown, in some embodiments, the electronic parking device may further include a controller 81, which can perform control actions according to non-parking commands and parking commands. When a non-parking command is received, the controller 81 can control the slider 3 to slide close to the locking member 2 when not parked, so that the locking engagement part 31 and the locking member 2 are engaged, and control the locking structure 4 to apply a locking force to the locking member 2 after the locking engagement part 31 and the locking member 2 are engaged, so that the locking member 2 and the locking engagement part 31 remain locked; when a parking command is received, the controller 81 can control the locking structure 4 to release the locking effect on the locking member 2. For example, when the locking structure 4 is an electromagnetic telescopic rod, the controller can control the electromagnetic telescopic rod to be de-energized and retracted, thereby releasing the tightening effect on the locking member 2.

[0061] like Figure 6As shown, in some examples, the electronic parking brake may further include a first connector 82 and a second connector 83. The first connector 82 is electrically connected to the controller 81 and the vehicle control system of the motor vehicle, and the second connector 83 is electrically connected to the locking structure 4 and the transmission power supply. The types of the first connector 82 and the second connector 83 can be determined according to actual needs, and this application embodiment does not limit this. For example, the first connector 82 may be a connector with multiple pins, and the second connector 83 may be a plug-in.

[0062] In some embodiments, the electronic parking device may further include an upper shell 91 and a lower shell 92, which are connected and enclosed to form a receiving cavity. For example, functional structural components such as the body seat 1, locking member 2, slider 3 and locking structure 4 may be disposed in the receiving cavity.

[0063] On the other hand, embodiments of this application provide a motor vehicle, which includes a gearbox pushrod and an electronic parking device provided in any of the above embodiments. The type of motor vehicle can be determined according to actual needs, and can be such as a passenger car, commercial vehicle, or special vehicle, etc., and embodiments of this application do not limit this.

[0064] The electronic parking device and motor vehicle provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An electronic parking brake device, characterized in that, include: body base; A locking element is provided on the main body base; A slider is disposed on the main body and connected to the gearbox push rod. The slider is provided with a locking engagement part. The slider is configured to slide close to the locking member when not parked so that the locking engagement part and the locking member engage, and to slide away from the locking member when parked so that the locking engagement part and the locking member disengage. A locking structure is provided on the main body seat and is configured to lock the locking member onto the locking mating part when the vehicle is not parked, and to release the locking effect on the locking member when the vehicle is parked. The electronic parking brake also includes a sliding seat and a return spring. The sliding seat includes an upper cover plate, a middle guide plate, and a lower cover plate stacked sequentially. The upper cover plate has an upper recess and an upper guide sub-shaft formed in the upper recess. The lower cover plate has a lower recess and a lower guide sub-shaft formed in the lower recess. The recess direction of the upper recess is opposite to that of the lower recess, and the upper recess and the lower recess enclose a guide groove. The upper guide sub-shaft and the lower guide sub-shaft are spaced apart and together form the guide sub-shaft. The reset spring is disposed within the guide groove and sleeved on the guide shaft.

2. The electronic parking device according to claim 1, characterized in that, The electronic parking device includes a drive element, a reduction gear mechanism, and a cam mechanism. The reduction gear mechanism includes an input gear, a multi-stage double gear, and an output gear that mesh sequentially. The input gear is connected to the drive element, the output gear is connected to the cam mechanism, and the cam mechanism is connected to the slider.

3. The electronic parking device according to claim 2, characterized in that, The cam mechanism includes a camshaft, a cam, and a driven shaft. The output gear and the cam are spaced apart on the camshaft. The camshaft and the driven shaft are arranged in parallel, and the driven shaft is connected to the slider.

4. The electronic parking device according to claim 3, characterized in that, The electronic parking device also includes a Hall sensor, and an angle magnet is provided on the camshaft. The Hall sensor and the angle magnet are spaced apart to sense the rotational position of the camshaft. And / or, the cam is provided with a self-locking position, and when the cam is in contact with the driven shaft in the self-locking position and the electronic parking device is de-energized, the cam mechanism achieves self-locking.

5. The electronic parking device according to claim 2, characterized in that, The sliding seat is disposed on the main body, and the slider is slidably held on the sliding seat; the return spring is disposed between the slider and the sliding seat, and the elastic extension direction of the return spring is parallel to the sliding direction of the slider.

6. The electronic parking device according to claim 1, characterized in that, The upper guide shaft portion extends outward from the bottom of the upper recessed portion along the concave direction of the lower recessed portion, and the lower guide shaft portion extends outward from the bottom of the lower recessed portion along the concave direction of the upper recessed portion.

7. The electronic parking device according to claim 1, characterized in that, The locking structure is an electromagnetic telescopic rod. When the vehicle is not parked, the electromagnetic telescopic rod extends to press the locking member against the locking mating part, and when the vehicle is parked, it retracts to release the pressing effect on the locking member.

8. The electronic parking device according to claim 1, characterized in that, The locking engagement portion is a recessed portion, and the locking element is a pawl; when the slider and the pawl are in contact, the slider slides in a direction close to the pawl so that the pawl swings into the recessed portion, and slides in a direction away from the pawl so that the pawl swings out of the recessed portion. The locking structure is configured to press and lock the pawl when it is inserted into the recessed portion.

9. The electronic parking device according to claim 8, characterized in that, The electronic parking device also includes a pawl shaft extending in a horizontal direction, the pawl shaft being interference-fitted onto the main body seat, and the pawl being clearance-fitted onto the pawl shaft; And / or, the slider and the locking structure are disposed on opposite sides of the pawl along its swing direction, the end of the pawl near the slider forms a mating end that engages with the recess, and the end of the pawl near the locking structure forms a working end that bears the locking action.

10. A motor vehicle, characterized in that, Includes a gearbox pushrod and an electronic parking device as described in any one of claims 1-9.

Images