Park and drive shift integrated device and vehicle

Abstract

The present application relates to the field of vehicles, and in particular to a parking and drive switching integrated device and a vehicle. The parking and drive switching integrated device includes an input shaft, an output shaft, an active tooth disc, a driven tooth disc, a parking ratchet, a parking pawl, a shift fork assembly and a driving actuator; the active tooth disc is axially slidably connected to the input shaft and circumferentially locked with the input shaft, the driven tooth disc is connected to the output shaft and drives the output shaft to rotate, the active tooth disc and the driven tooth disc are engaged through a first engaging tooth and a second engaging tooth, and the parking ratchet is circumferentially fixedly connected to the output shaft; the driving actuator is connected and drives the shift fork assembly to rotate, and the shift fork assembly is drivingly connected to the active tooth disc and the parking pawl; when the shift fork assembly rotates a first angle in a first direction, the active tooth disc and the driven tooth disc are driven to engage, and when the shift fork assembly continues to rotate a second angle, the parking pawl locks the parking ratchet. The above-mentioned parking and drive switching integrated device can simplify the structure, reduce the cost of parts and the weight of the vehicle body.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a parking and driving switching integrated device and a vehicle. Background Art

[0002] Four-wheel drive vehicles and two-wheel drive vehicles have their own advantages and disadvantages. Four-wheel drive vehicles have strong power, good off-road performance and maneuverability, but high fuel consumption. Two-wheel drive vehicles have high transmission efficiency and low fuel consumption, but are relatively easy to lose control in rainy and snowy weather.

[0003] At present, there are many vehicles on the market that have the function of switching between four-wheel drive and two-wheel drive. They need to use a drive switching system to achieve the switch between four-wheel drive and two-wheel drive; they also need to use another parking system to achieve the parking function. The four-wheel drive system and the parking system are two independent systems. In addition to a complete transmission system, the drive switching system also requires an independent controller and drive actuator. Similarly, the parking system is also an independent system and also requires an independent controller and drive actuator. Not only does it increase the cost of parts, but it also takes up more space and increases the weight of the vehicle body, which is not conducive to the lightweight design of the entire vehicle. Summary of the invention

[0004] The present application provides a parking and drive switching integrated device and a vehicle. The integrated device integrates the parking function and the drive switching function, which can simplify the system structure, reduce the number of components, reduce the component cost and vehicle body weight, and is conducive to the lightweight design of the entire vehicle.

[0005] In a first aspect, the present application provides a parking and driving switching integrated device, comprising:

[0006] An input shaft and an active toothed disc, wherein the active toothed disc is slidably connected to the input shaft along the axial direction of the input shaft, and the active toothed disc and the input shaft are circumferentially locked, and the active toothed disc is provided with a first engaging tooth;

[0007] The output shaft and the driven tooth plate are both coaxially arranged with the input shaft; the driven tooth plate is connected to the output shaft and drives the output shaft to rotate, and the driven tooth plate is provided with a second engaging tooth that cooperates with the first engaging tooth;

[0008] A parking ratchet and a parking pawl, wherein the parking ratchet is circumferentially fixedly connected to the output shaft;

[0009] A shift fork assembly, drivingly connected to the active tooth plate and the parking pawl;

[0010] A driving actuator is connected to the fork assembly and drives the fork assembly to rotate. When the driving actuator drives the fork assembly to rotate a first angle in a first direction, the active tooth disk is driven to slide and engage with the driven tooth disk; when the driving actuator drives the fork assembly to continue to rotate a second angle in the first direction, the parking pawl is driven to lock the parking ratchet.

[0011] In some embodiments, the active toothed disk includes a disk body and a shaft portion, a sleeve is slidably connected to the shaft portion, the fork assembly is connected to the sleeve and drives the sleeve to slide, a wave spring is provided between the sleeve and the disk body, and a retaining ring is provided at one end of the shaft portion away from the disk body to lock the sleeve.

[0012] In some embodiments, the fork assembly includes a fork body and a driving arm connected to the fork body, and the fork body is clamped with the sliding sleeve;

[0013] A transmission connecting rod is provided between the driving arm and the parking pawl, wherein a first end of the transmission connecting rod is hinged to the driving arm, and a second end of the transmission connecting rod abuts against a side of the parking pawl away from the parking ratchet wheel;

[0014] When the driving arm rotates in a first direction, it drives the transmission connecting rod to move toward the parking pawl, squeezes and drives the parking pawl to rotate toward the parking ratchet wheel, and the parking pawl is connected to a first reset torsion spring, which is used to drive the parking pawl to rotate away from the parking ratchet wheel and reset.

[0015] In some embodiments, a limiting groove is provided on the side of the parking pawl facing away from the parking ratchet wheel, and also includes a fixed arc-shaped limiting member, which is arranged corresponding to the limiting groove and cooperates with the limiting groove to form a limiting space for limiting the second end of the transmission connecting rod.

[0016] In some embodiments, the second end of the transmission link is slidably connected to the transmission cap, and the transmission cap is provided with a conical extrusion portion, and the radial dimension of the conical extrusion portion gradually increases from close to the parking pawl to away from the parking pawl; the transmission link is sleeved with a buffer spring, and the buffer spring abuts against the transmission cap.

[0017] In some embodiments, the drive actuator includes a self-locking mechanism, and the self-locking mechanism is used to lock the output shaft of the drive actuator to maintain a preset angle.

[0018] In some embodiments, the fork assembly is connected to a second reset torsion spring, and the second reset torsion spring is used to drive the fork assembly to rotate and reset along a second direction, and the second direction is opposite to the first direction.

[0019] In some embodiments, a first spline is provided between an inner wall of the active toothed disc and an outer wall of the input shaft.

[0020] In some embodiments, a second spline is provided between the inner wall of the driven tooth plate and the outer wall of the output shaft; and / or a third spline is provided between the inner wall of the parking ratchet and the outer wall of the output shaft.

[0021] In a second aspect, the present application provides a vehicle, using any of the above-mentioned parking and drive switching integrated devices.

[0022] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the parking function and the drive switching function are integrated into a set of devices, and only one set of drive actuators and controllers is required. The drive actuator drives the fork assembly to rotate in steps, driving the active tooth plate and the parking pawl to respectively perform the drive switching function and the parking function, thereby reducing the number of parts, simplifying the device structure, saving parts costs and reducing the weight of the vehicle, which helps to achieve lightweight body.

[0023] When the above-mentioned parking and drive switching integrated device is working, when the driving actuator drives the fork assembly to rotate from the initial position in the first direction by a first angle, the fork assembly drives the active tooth plate to slide along the axial direction of the input shaft toward the output shaft and the driven tooth plate, and the active tooth plate and the driven tooth plate are engaged through the first engaging teeth and the second engaging teeth, so that the input shaft can drive the output shaft to rotate; wherein, the input shaft is transmission-connected to one of the front axle and the rear axle of the vehicle, and the output shaft is transmission-connected to the other of the front axle and the rear axle of the vehicle, and after the input shaft and the output shaft are connected, the vehicle switches from the two-wheel drive mode to the four-wheel drive mode; in the four-wheel drive mode, the driving actuator drives the fork assembly to continue to rotate by a second angle, and the fork assembly drives the parking pawl to move to a state of locking the parking ratchet, thereby realizing the parking function.

[0024] When the parking mode needs to be released, the driving actuator drives the fork assembly to rotate a second angle in a second direction opposite to the first direction, and the parking pawl disengages from the parking ratchet; when it is necessary to switch to the two-wheel drive mode, the driving actuator continues to drive the fork assembly to rotate the first angle in the second direction, the fork assembly returns to its initial position, the active tooth plate and the driven tooth plate separate, and the switching from the four-wheel drive mode to the two-wheel drive mode is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 A schematic diagram of a parking and driving switching integrated device provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 Schematic diagram of the central parking and drive switching integrated device without the drive actuator;

[0030] Figure 3 for Figure 2 Schematic diagram of the integrated parking and drive switching device without the parking ratchet and transmission link;

[0031] Figure 4 It is a schematic diagram of the assembly of the fork assembly and the active tooth plate;

[0032] Figure 5 for Figure 4 Rear view of

[0033] Figure 6 for Figure 4 Exploded diagram of

[0034] Figure 7 This is the working principle diagram of the parking ratchet;

[0035] Figure 8 for Figure 7 Schematic diagram of the transmission connecting rod.

[0036] Description of reference numerals:

[0037] 10- input shaft;

[0038] 20-active toothed disc; 21-wave spring; 22-sliding sleeve; 23-circlip;

[0039] 30-shift fork assembly; 31-shift fork body; 32-driving arm; 33-second return torsion spring;

[0040] 40-driven tooth plate; 50-output shaft;

[0041] 60-parking ratchet; 61-parking pawl; 62-first reset torsion spring; 63-transmission connecting rod; 64-transmission cap; 641-conical extrusion part; 65-buffer spring; 66-arc-shaped limiter;

[0042] 70-Drive actuator. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0045] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a change in posture or a change in motion state, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0046] In order to solve the technical problem in the prior art that the large number of components in the drive switching system and the parking system leads to increased parts cost and vehicle body weight, the present application provides a parking and drive switching integrated device and a vehicle, which integrates the parking function and the drive mode switching function into a set of devices, can reduce the number of components, save component costs, reduce vehicle weight, and facilitate lightweighting of the vehicle.

[0047] The initial position refers to the position of the fork assembly 30 when the active tooth plate 20 and the driven tooth plate 40 are in a mutually separated state. Figures 1 to 3 The clockwise direction in the second direction is Figures 1 to 3 The counterclockwise direction in the first direction is opposite to the second direction. The input shaft 10 is connected to one of the front and rear axles of the vehicle, and the output shaft 50 is connected to the other of the front and rear axles of the vehicle. When the output shaft 50 is connected to the input shaft 10, the vehicle switches from the two-wheel drive mode to the four-wheel drive mode. When the output shaft 50 is separated from the input shaft 10, the vehicle switches from the four-wheel drive mode to the two-wheel drive mode.

[0048] The embodiment of the present application provides a parking and driving switching integrated device, such as Figures 1 to 3 As shown, the parking and driving switching integrated device mainly includes an input shaft 10, an output shaft 50, an active tooth disc 20, a driven tooth disc 40, a parking ratchet 60, a parking pawl 61, a shift fork assembly 30 and a driving actuator 70. Among them, the active tooth disc 20 is slidably connected with the input shaft 10 along the axial direction of the input shaft 10, and the active tooth disc 20 and the input shaft 10 are relatively locked in the circumferential direction, so that the input shaft 10 can drive the active tooth disc 20 to rotate. The driven tooth disc 40 and the output shaft 50 are both coaxially arranged with the input shaft 10, and the driven tooth disc 40 is connected to the output shaft 50 and drives the output shaft 50 to rotate. The active tooth disc 20 is provided with a first engaging tooth on the side facing the driven tooth disc 40, and the driven tooth disc 40 is provided with a second engaging tooth on the side facing the active tooth disc 20. The active tooth disc 20 and the driven tooth disc 40 are mutually connected through the first engaging tooth and the second engaging tooth. When the driving tooth plate 20 slides toward the driven tooth plate 40 along the axial direction of the input shaft 10 , the first engaging teeth and the second engaging teeth engage with each other.

[0049] The parking ratchet 60 is circumferentially fixedly connected to the output shaft 50; the driving actuator 70 is connected to and drives the fork assembly 30 to rotate, and the fork assembly 30 is respectively connected to the active tooth disc 20 and the parking pawl 61. When the driving actuator 70 drives the fork assembly 30 to rotate in the first direction by a first angle, the fork assembly 30 drives the active tooth disc 20 to move toward the driven tooth disc 40 along the axial direction of the input shaft 10, and the first engaging teeth engage with the second engaging teeth to achieve circumferential locking of the active tooth disc 20 and the driven tooth disc 40, so that the input shaft 10 can drive the output shaft 50 to rotate through the active tooth disc 20 and the driven tooth disc 40, and the vehicle enters the four-wheel drive mode from the two-wheel drive mode. In the four-wheel drive mode, when the driving actuator 70 drives the fork assembly 30 to continue to rotate by a second angle, the fork assembly 30 can drive the parking pawl 61 to move, so that the parking pawl 61 locks the parking ratchet 60, and the vehicle enters the parking mode.

[0050] When the parking mode needs to be released, the driving actuator 70 drives the fork assembly 30 to rotate by a second angle in a second direction opposite to the first direction, so that the parking pawl 61 is reset and disengaged from the parking ratchet 60. When the two-wheel drive mode needs to be switched, the driving actuator 70 continues to drive the fork assembly 30 to rotate by the first angle in the second direction, and the fork assembly 30 returns to the initial position, driving the active tooth plate 20 to slide away from the driven tooth plate 40 along the axial direction of the input shaft 10, and separates from the driven tooth plate 40, thereby switching from the four-wheel drive mode to the two-wheel drive mode.

[0051] The parking and drive switching integrated device provided in the present application integrates the parking function and the drive switching function into one set of devices, and only requires a set of drive actuators 70 and a corresponding controller. The drive actuator 70 drives the fork assembly 30 to rotate in steps, driving the active tooth plate 20 and the parking pawl 61 to respectively perform the drive mode switching function and the parking function, thereby reducing the number of components, simplifying the device structure, saving component costs and reducing the weight of the vehicle, which helps to achieve lightweight vehicle body.

[0052] Combined with reference Figures 4 to 6 The active toothed disc 20 includes a disc body and a shaft portion. The shaft portion and the input shaft 10 are slidably connected in the axial direction and mutually locked in the circumferential direction. The first engaging teeth are evenly arranged in the circumferential direction on the side of the disc body facing the driven toothed disc 40. The parking and drive switching integrated device also includes a sleeve 22, a wave spring 21 and a retaining ring 23. The sleeve 22 is slidably connected to the outer periphery of the shaft portion of the active toothed disc 20. A groove is provided at one end of the shaft portion away from the disc body. The retaining ring 23 is installed in the groove to limit the sliding position of the sleeve 22 to prevent the sleeve 22 from sliding off the shaft portion. The wave spring 21 is slidably sleeved on the shaft portion and is located between the sleeve 22 and the disc body. The wave spring 21 plays a certain elastic buffering role.

[0053] When the actuator 70 drives the shift fork assembly 30 to rotate in the first direction by the first angle, the shift fork assembly 30 shifts the sliding sleeve 22 to slide toward one end of the disc body and compresses the wave spring 21. When the first engaging teeth of the active toothed disc 20 and the second engaging teeth of the driven toothed disc 40 are exactly aligned, the elastic force of the wave spring 21 drives the disc body, that is, the active toothed disc 20, to move toward the driven toothed disc 40. The active toothed disc 20 and the driven toothed disc 40 are engaged with each other by means of the first engaging teeth and the second engaging teeth. When the first engaging teeth of the active toothed disc 20 and the second engaging teeth of the driven toothed disc 40 are aligned, the wave spring 21 cannot restore the deformation at this time, and the wave spring 21 gives the active toothed disc 20 a holding force to move toward the driven toothed disc 40; when the first engaging teeth of the active toothed disc 20 and the second engaging teeth of the driven toothed disc 40 are staggered, the elastic force of the wave spring 21 drives the first engaging teeth of the active toothed disc 20 and the second engaging teeth of the driven toothed disc 40 to engage. The alignment of the active toothed disc 20 and the driven toothed disc 40 and the staggered alignment of the first engaging teeth and the second engaging teeth both refer to the state when the first engaging teeth can be embedded in the tooth gap of the second engaging teeth.

[0054] The actuator 70 drives the fork assembly 30 to continue to rotate along the first direction to the second angle. The fork assembly 30 shifts the sleeve 22 to move toward the disk body. The sleeve 22 compresses the wave spring 21 again. That is, the setting of the wave spring 21 provides a buffer for the movement of the sleeve 22 and the fork assembly 30, ensuring that the fork assembly 30 can achieve step-by-step rotation of the first angle and the second angle, and at the same time ensuring that the sleeve 22 has space to move along the shaft when the active toothed disk 20 and the driven toothed disk 40 are not aligned. The fork assembly 30 and the parking pawl 61 can be connected through a transmission assembly. When the fork assembly 30 continues to rotate along the first direction to the second angle, the parking pawl 61 is driven by the transmission assembly to move toward the parking ratchet 60, and the parking ratchet 60 is locked to achieve the parking function. This embodiment does not limit the structure of the fork assembly 30 driving the parking pawl 61, which will be described in detail below in conjunction with a specific embodiment.

[0055] In some embodiments, reference Figure 1 and Figures 6 to 8The fork assembly 30 includes a fork body 31 and a driving arm 32 connected to the fork body 31. The fork body 31 is a semicircular arc or inverted U-shaped structure as a whole. The bottom end of the fork body 31 is provided with a pair of slot structures for engaging the sliding sleeve 22. The slot structure and the sliding sleeve 22 are clearance-matched, and the slot structure is rotatably connected to the bottom end of the fork body. An axial hole is provided on one side of the top of the fork body 31 for connecting with the rotating shaft of the driving actuator 70, and an installation shaft is provided on the other side for installing and positioning the fork body 31. The driving arm 32 is connected to one side of the axial hole of the fork body 31, so that the driving arm 32 can rotate with the fork body 31. When the driving actuator 70 drives the fork body 31 to rotate, it acts on the sleeve 22 through the slot structure. The sleeve 22 and the slot structure are clearance-matched and limited by the input shaft 10, so that the fork body 31 can only drive the sleeve 22 to slide along the input shaft 10. When the fork body 31 rotates, it can drive the driving arm 32 to rotate synchronously; when the fork body 31 drives the sleeve 22 to slide axially along the input shaft 10 through the slot structure, the slot structure adaptively rotates relative to the bottom end of the fork body 31 to better clamp and drive the sleeve 22.

[0056] The first end of the parking pawl 61 is provided with an axial hole and is installed through the mounting shaft, and the second end is provided with a ratchet tooth that cooperates with the parking ratchet 60, and the second end can rotate around the first end. The transmission assembly adopts a transmission link 63 arranged between the driving arm 32 and the parking pawl 61, the first end of the transmission link 63 is hinged to the driving arm 32, and the second end of the transmission link 63 abuts against the side of the parking pawl 61 away from the parking ratchet 60. When the fork body 31 drives the driving arm 32 to rotate in the first direction, the transmission link 63 can be driven to move toward the parking pawl 61, and the second end of the parking pawl 61 can be squeezed to lock the parking ratchet 60 to achieve parking.

[0057] In order to ensure that when the shift fork assembly 30 rotates in the second direction, that is, the transmission link 63 moves in the direction away from the parking pawl 61, the parking pawl 61 can rotate and reset and unlock the parking ratchet 60, the parking pawl 61 is connected to the first reset torsion spring 62. When the transmission link 63 moves toward the parking pawl 61 and squeezes the parking pawl 61 to rotate toward the parking ratchet 60, the first reset torsion spring 62 is twisted and deformed; when the transmission link 63 moves away from the parking pawl 61, the abutment limit of the transmission link 63 is lost, and the parking pawl 61 rotates away from the parking ratchet 60 under the action of the reset elastic force of the first reset torsion spring 62, unlocking the parking ratchet 60.

[0058] Furthermore, the parking pawl 61 is provided with a limiting groove on the side facing away from the parking ratchet 60, and also includes an arc-shaped limiting member 66, which can be installed and fixed at a corresponding position of the vehicle body by fasteners such as bolts. The arc-shaped limiting member 66 is arranged corresponding to the limiting groove of the parking pawl 61, and cooperates with the limiting groove to form a limiting space for limiting the second end of the transmission connecting rod 63, and the second end of the transmission connecting rod 63 is slidably arranged in the limiting space. It should be noted that the second end of the transmission connecting rod 63 is provided with shaft sections of unequal radial sizes, so that the second end of the transmission connecting rod 63 moves along the limiting space toward the parking pawl 61, and the part with a larger radial size acts on the limiting groove, squeezing the parking pawl 61 to rotate toward the parking ratchet 60.

[0059] In some embodiments, the transmission assembly includes a transmission cap 64 slidably connected to the second end of the transmission link 63, the transmission cap 64 includes a first shaft section, a tapered extrusion portion 641 and a second shaft section, the second shaft section, the tapered extrusion portion 641 and the first shaft section are sequentially arranged in a direction away from the first end of the transmission link 63, and the radial dimension of the second shaft section is larger than that of the first shaft section. The radial dimension of the tapered extrusion portion 641 gradually increases from the first shaft section to the second shaft section, that is, from the direction close to the parking pawl 61 to the direction away from the parking pawl 61. The transmission link 63 is also sleeved with a buffer spring 65, and the buffer spring 65 abuts between the transmission cap 64 and the first end of the transmission link 63.

[0060] When the fork assembly 30 is driven to rotate in the first direction by a first angle, the driving arm 32 drives the second end of the transmission link 63 to slide toward the limiting space formed by the limiting groove of the parking pawl 61. At this time, the conical extrusion portion 641 of the transmission cap 64 has not yet entered the limiting space, and will not squeeze and drive the parking pawl 61 to lock the parking ratchet 60, thereby ensuring the smooth switching from the two-wheel drive mode to the four-wheel drive mode and the normal operation of the four-wheel drive mode.

[0061] The fork assembly 30 continues to rotate in the first direction to a second angle, and drives the transmission connecting rod 63 through the driving arm 32 to drive the transmission cap 64 to move toward the limited space. When the parking pawl 61 and the parking ratchet 60 are tooth-to-tooth, the conical extrusion portion 641 cannot enter the limited space, so that the buffer spring 65 is compressed, and the buffer spring 65 provides a maintaining force for the drive cap 64 to move toward the limited space; when the parking ratchet 60 rotates to align with the parking pawl 61, the elastic force generated by the buffer spring 65 drives the conical extrusion portion 641 and the second shaft segment of the transmission cap 64 to enter the buffer space, squeezes the parking pawl 61 to rotate toward the parking ratchet 60 and locks the parking ratchet 60.

[0062] The drive actuator 70 provided in the embodiment of the present application includes a drive motor and a self-locking mechanism, and the self-locking mechanism is used to keep the output shaft of the drive motor at a preset angle, so that the fork assembly 30 can be respectively maintained at the initial position, the first angle along the first direction relative to the initial position, and the second angle along the first direction relative to the initial position, thereby making the vehicle stably maintained in the two-wheel drive mode, the four-wheel drive mode, and the parking mode. The present application does not improve the structure of the drive actuator 70 and the self-locking mechanism, but only applies the drive actuator 70 with the self-locking mechanism to the parking and drive switching integrated device of the present application to ensure the stability of operation in various modes.

[0063] In the above embodiment, a second reset torsion spring 33 may be provided at the fork assembly 30 or the fork body 31. When the driving actuator 70 drives the fork assembly 30 to rotate from the initial position along the first direction, the second reset torsion spring 33 is torsionally deformed. When the driving actuator 70 drives the fork assembly 30 to rotate and reset to the initial position along the second direction, the second reset torsion spring 33 can generate a reset torque to cooperate with the driving actuator 70 to drive the fork assembly 30 to rotate and reset. A first spline is provided between the inner wall of the active toothed disc 20 and the outer wall of the input shaft 10. The active toothed disc 20 is connected to the input shaft 10 through the first spline, thereby realizing axial sliding and circumferential locking relative to the input shaft 10, and facilitating the input shaft 10 to transmit torque to the active toothed disc 20.

[0064] Similarly, a second spline is provided between the inner wall of the driven toothed disk 40 and the outer wall of the output shaft 50, and a third spline is provided between the inner wall of the parking ratchet 60 and the outer wall of the output shaft 50. The output shaft 50, the driven toothed disk 40 and the parking ratchet 60 are assembled through the second spline and the third spline, so that the output shaft 50, the driven toothed disk 40 and the parking ratchet 60 can be conveniently processed and assembled separately, thereby reducing the processing difficulty and improving the convenience of maintenance.

[0065] An embodiment of the present application also provides a vehicle, including the parking and drive switching integrated device provided in the above embodiment. The other parts of the vehicle refer to the prior art and will not be described in detail in this application.

[0066] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0067] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0068] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A parking and driving switching integrated device, characterized in that: include: An input shaft and an active toothed disc, wherein the active toothed disc is slidably connected to the input shaft along the axial direction of the input shaft, and the active toothed disc and the input shaft are circumferentially locked, and the active toothed disc is provided with a first engaging tooth; The output shaft and the driven tooth plate are both coaxially arranged with the input shaft; the driven tooth plate is connected to the output shaft and drives the output shaft to rotate, and the driven tooth plate is provided with a second engaging tooth that cooperates with the first engaging tooth; A parking ratchet and a parking pawl, wherein the parking ratchet is circumferentially fixedly connected to the output shaft; A shift fork assembly is transmission-connected with the active toothed disk and the parking pawl, the active toothed disk comprises a disk body and a shaft portion, a sliding sleeve is slidably connected to the shaft portion, the shift fork assembly comprises a shift fork body and a driving arm connected to the shift fork body, the shift fork body is connected to the sliding sleeve and drives the sliding sleeve to slide, a transmission connecting rod is provided between the driving arm and the parking pawl, a first end of the transmission connecting rod is hinged to the driving arm, and a second end abuts against a side of the parking pawl away from the parking ratchet wheel, and when the driving arm rotates in a first direction, the transmission connecting rod is driven to move toward the parking pawl, thereby squeezing and driving the parking pawl to rotate toward the parking ratchet wheel; A driving actuator is connected to the fork assembly and drives the fork assembly to rotate. When the driving actuator drives the fork assembly to rotate a first angle in a first direction, the active tooth disk is driven to slide and engage with the driven tooth disk; when the driving actuator drives the fork assembly to continue to rotate a second angle in the first direction, the parking pawl is driven to lock the parking ratchet.

2. The parking and driving switching integrated device according to claim 1, characterized in that: A wave spring is arranged between the sliding sleeve and the disc body, and a clamping ring for clamping the sliding sleeve is arranged at one end of the shaft away from the disc body.

3. The parking and driving switching integrated device according to claim 2, characterized in that: The parking pawl is connected to a first reset torsion spring, and the first reset torsion spring is used to drive the parking pawl to rotate away from the parking ratchet wheel and reset.

4. The parking and driving switching integrated device according to claim 3, characterized in that: The parking pawl is provided with a limiting groove on one side away from the parking ratchet wheel, and also includes a fixed arc-shaped limiting member, which is arranged corresponding to the limiting groove and cooperates with the limiting groove to form a limiting space for limiting the second end of the transmission connecting rod.

5. The parking and driving switching integrated device according to claim 4, characterized in that: The second end of the transmission connecting rod is slidably connected to the transmission cap, and the transmission cap is provided with a conical extrusion portion, and the radial dimension of the conical extrusion portion gradually increases from close to the parking pawl to away from the parking pawl; the transmission connecting rod is sleeved with a buffer spring, and the buffer spring abuts against the transmission cap.

6. The parking and driving switching integrated device according to any one of claims 1 to 5, characterized in that: The driving actuator comprises a self-locking mechanism, and the self-locking mechanism is used to lock the output shaft of the driving actuator at a preset angle.

7. The parking and driving switching integrated device according to claim 6, characterized in that: The shift fork assembly is connected to a second reset torsion spring, and the second reset torsion spring is used to drive the shift fork assembly to rotate and reset along a second direction, and the second direction is opposite to the first direction.

8. The parking and driving switching integrated device according to claim 1, characterized in that: A first spline is provided between the inner wall of the active toothed disc and the outer wall of the input shaft.

9. The parking and driving switching integrated device according to claim 1, characterized in that: A second spline is provided between the inner wall of the driven tooth plate and the outer wall of the output shaft; and a third spline is provided between the inner wall of the parking ratchet and the outer wall of the output shaft.

10. A vehicle, characterized in that: The parking and driving switching integrated device according to any one of claims 1 to 9 is used.

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