Vehicle electronic parking mechanism and vehicle

Abstract

The present invention discloses a vehicle electronic parking mechanism and a vehicle, and relates to the technical field of vehicle parking. The vehicle electronic parking mechanism comprises: a parking motor; a gear reduction mechanism, comprising a driving gear and a driven gear meshing with each other, the driving gear being connected to the parking motor; a parking gear being installed on a power transmission shaft; and a locking mechanism, comprising a guide groove, a slider, a pivot and a locking member, the guide groove being arranged on the end face of the driven gear, the slider being slidably matched with the guide groove, the pivot being fixedly connected with the environmental structure, the pivot being also rotatably matched with the locking member, the locking member being also connected to the slider, and a locking head being arranged on the locking member. The gear reduction mechanism can reduce the rotation speed of the parking motor and increase the torque, and the transmission efficiency is high; the driven gear and the guide groove are integrated into one, the number of components is reduced, the complexity of the parking mechanism is reduced, and the overall structure is simple and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parking, and in particular to a vehicle electronic parking mechanism and a vehicle. Background Art

[0002] The current automatic transmission vehicles, including hybrid vehicles and pure electric vehicles, have a parking system as an indispensable part in order to meet the requirements of safety and reliability when the vehicle stops. When the vehicle stops and is put into P gear, the parking mechanism can smoothly complete the locking action, so that the vehicle can be stably and parked in the designated position for a long time. Even if it is parked on a slope, it cannot automatically disengage the gear, causing the parking function to fail. When the car is ready to start and exit P gear, the parking mechanism can smoothly release the lock. Even on a slope, the appropriate gear release force can complete the gear release action to ensure the safety of the vehicle. The parking mechanism is integrated inside the gearbox, and its structure is designed into different structural forms according to the different internal space layout of the gearbox. Because it involves vehicle safety, the parking mechanism needs to meet certain strength and reliability requirements.

[0003] The existing motor-driven parking mechanism adopts a worm gear reduction mechanism, which has low transmission efficiency and large power loss. In order to ensure a reliable parking function, a larger power parking motor needs to be selected, which consumes a lot of energy and affects the cruising range of pure electric vehicles. At the same time, the parking mechanism is large in size and heavy in weight, which is not conducive to its layout and installation on the vehicle. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned background technology and to provide a vehicle electronic parking mechanism and a vehicle.

[0005] In a first aspect, a vehicle electronic parking mechanism is provided, comprising:

[0006] Parking motor;

[0007] A gear reduction mechanism, comprising a driving gear and a driven gear meshing with each other, wherein the driving gear is connected to the parking motor;

[0008] a parking gear mounted on the power transmission shaft; and

[0009] The locking mechanism includes a guide rail groove, a slider, a pivot and a locking piece. The guide rail groove is arranged on the end face of the driven gear, and the guide rail groove includes a continuous unlocking section and a locking section. The slider is arranged in the guide rail groove and slidingly cooperates with the guide rail groove. The pivot is fixedly connected to the environmental structure, and the pivot is also rotationally cooperated with the locking piece. The locking piece is also connected to the slider, and a locking head is provided on the locking piece. When the driven gear rotates to drive the slider to slide in the locking section or the unlocking section, the locking piece is rotated around the pivot to achieve engagement or separation between the locking head and the tooth groove of the parking gear.

[0010] Furthermore, the unlocking section and the locking section are both arc-shaped grooves.

[0011] Furthermore, the unlocking section includes a first arc-shaped groove, the locking section includes a second arc-shaped groove, and the first arc-shaped groove and the second arc-shaped groove are concentric with the driven gear, the radius of the first arc-shaped groove is greater than the radius of the second arc-shaped groove, and a connecting transition groove is also provided between the first arc-shaped groove and the second arc-shaped groove.

[0012] The beneficial effect of the above further solution is that the sliding block can slide more smoothly in the guide rail groove through the action of the transition groove.

[0013] Furthermore, the slider includes a cylindrical sliding column arranged in the guide rail groove, the groove widths of the first arc groove, the second arc groove and the transition groove are all the same, and the arc side wall of the sliding column is against the groove wall of the first arc groove, the second arc groove and the transition groove.

[0014] Furthermore, the locking member comprises a pawl, one end of the pawl is provided with the locking head, and the other end of the pawl is provided with the pivot and the slider.

[0015] Furthermore, the locking member includes a frame, a locking rod and a limit member; the pivot and the slider are provided at one end of the frame, and the other end of the frame is rotatably connected to one end of the locking rod; the locking head is provided at the other end of the locking rod; the limit member is connected to the environmental structure and surrounds the locking rod to limit the radial displacement of the locking rod.

[0016] Furthermore, the limiting member comprises a sliding bearing, and the sliding bearing is coaxially sleeved on the locking rod.

[0017] Furthermore, the frame and the locking rod are rotationally connected via a pin.

[0018] Furthermore, the frame includes a triangular plate, and the pivot, the slider and the pin are respectively arranged at three corner ends of the triangular plate in a one-to-one correspondence.

[0019] In a second aspect, a vehicle is also proposed, comprising the vehicle electronic parking mechanism.

[0020] Compared with the prior art, the advantages of the present invention are as follows:

[0021] The power source is provided by the parking motor, which avoids the complex structure of the manual cable parking mechanism. The driver does not need to provide driving force, which facilitates automatic control and improves the driver's operating comfort. The speed of the parking motor can be reduced and the torque can be increased by the gear reduction mechanism, and the transmission efficiency is high. A guide groove is opened on the driven gear to facilitate the sliding of the slider in the guide groove. The driven gear and the guide groove are integrated into one, which reduces the number of parts and the complexity of the parking mechanism. The overall structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the meshing of the locking member and the tooth groove of the parking gear of one embodiment of the vehicle electronic parking mechanism of the present invention;

[0023] Figure 2 yes Figure 1 A schematic cross-sectional structure diagram of;

[0024] Figure 3 yes Figure 1 A schematic diagram of the main structure of the driven gear;

[0025] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure in which the locking member is separated from the tooth groove of the parking gear.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of another embodiment of the electronic parking mechanism for a vehicle of the present invention, in which a locking member is meshed with a tooth groove of a parking gear;

[0027] Figure 6 yes Figure 5 A schematic cross-sectional structure diagram of;

[0028] Figure 7 yes Figure 5 Schematic diagram of the three-dimensional structure in which the locking member is separated from the tooth groove of the parking gear.

[0029] In the figure: 1-parking motor; 2-driving gear; 3-driven gear; 4-parking bearing; 5-gear shaft; 6-slider; 7-pivot; 8-locking piece; 9-parking gear; 10-guide groove; 11-first arc groove; 12-transition groove; 13-second arc groove; 14-frame; 15-locking rod; 16-limiting piece; 17-axle pin. DETAILED DESCRIPTION

[0030] Reference will now be made in detail to specific embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Although the present invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the present invention to the embodiments described. On the contrary, it is intended to cover changes, modifications and equivalents included in the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described herein can all be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of the two.

[0031] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Note: The example to be introduced below is only a specific example, and is not intended to limit the embodiments of the present invention to the following specific steps, values, conditions, data, sequences, etc. Those skilled in the art can apply the concept of the present invention to construct more embodiments not mentioned in this specification by reading this specification.

[0033] The parking mechanisms on existing vehicles include manual cable-type parking mechanisms and motor-driven parking mechanisms. The manual cable-type parking mechanism is driven by the driver operating the shift handle to provide driving force, and the parking pawl is driven by the cable to move to execute the locking or unlocking function of the parking mechanism. A cable needs to be arranged to connect the operating handle in the cab to the front cabin. Its structure is complex and occupies a large space. At the same time, since the parking driving force comes from the driver's manual operating force, it is easy to cause driver fatigue and affect the driving comfort of the vehicle. The motor-driven parking mechanism is driven by the parking motor to perform the locking or unlocking function of the parking mechanism. The reduction mechanism of the parking motor adopts a worm gear type. This structure has large power loss and low transmission efficiency, and is not suitable for new energy vehicles.

[0034] The present invention adopts a motor-driven parking mechanism, which avoids the complex structure of a manual cable-type parking mechanism and improves the convenience of operation for the driver. The reduction mechanism adopts an external meshing cylindrical gear with a simple structure and high transmission efficiency. The guide rail groove and the gear are integrated into one. The entire mechanism is small in size and can make full use of the narrow space on the vehicle, which is convenient and flexible to arrange and install.

[0035] Combined with Figure 1-3 As shown, the vehicle electronic parking mechanism of the present invention comprises: a parking motor 1, a gear reduction mechanism, a parking gear 9 and a locking mechanism.

[0036] The gear reduction mechanism includes a driving gear 2 and a driven gear 3 meshing with each other, and the driving gear 2 is connected to the parking motor 1. The output shaft of the parking motor 1 is connected to the driving gear 2, which is used to drive the driving gear 2 to rotate. The rotation of the driving gear 2 drives the driven gear 3 to rotate. The diameter of the driving gear 2 is smaller than that of the driven gear 3, thereby achieving deceleration and increasing torque.

[0037] In addition, a parking bearing 4 is coaxially arranged on the driven gear 3 , and a gear shaft 5 is sleeved inside the parking bearing 4 .

[0038] The parking gear 9 is installed on the power transmission shaft. In fact, the installation position of the parking mechanism of this embodiment depends on the position of the existing power transmission shaft of the vehicle. That is, after the parking gear 9 is installed on the power transmission shaft, the position of the gear reduction mechanism is determined according to the stroke of the locking mechanism, and finally the position of the parking motor 1 is determined.

[0039] The locking mechanism includes a guide rail groove 10, a slider 6, a pivot 7 and a locking member 8. The guide rail groove 10 is arranged on the end face of the driven gear 3. The guide rail groove 10 includes a continuous unlocking section and a locking section. The slider 6 is arranged in the guide rail groove 10 and slides with the guide rail groove 10. The pivot 7 is fixedly connected to the environmental structure. The pivot 7 also rotates with the locking member 8. The locking member 8 is also connected to the slider 6. A locking head is provided on the locking member 8. When the driven gear 3 rotates to drive the slider 6 to slide in the locking section or the unlocking section, the locking member 8 rotates around the pivot 7 to achieve the tooth groove engagement or separation of the locking head and the parking gear 9.

[0040] Combined with Figure 3 As shown, the unlocking section and the locking section are both arc-shaped grooves. Specifically, the unlocking section includes a first arc-shaped groove 11, and the locking section includes a second arc-shaped groove 13, and the first arc-shaped groove 11 and the second arc-shaped groove 13 are concentric with the driven gear 3, the radius of the first arc-shaped groove 11 is greater than the radius of the second arc-shaped groove 13, and a connecting transition groove 12 is also provided between the first arc-shaped groove 11 and the second arc-shaped groove 13. The slider 6 includes a cylindrical sliding column provided in the guide rail groove 10, and the groove widths of the first arc-shaped groove 11, the second arc-shaped groove 13 and the transition groove 12 are all the same, and the arc-shaped side wall of the sliding column abuts against the groove walls of the first arc-shaped groove 11, the second arc-shaped groove 13 and the transition groove 12.

[0041] The locking member 8 of this embodiment includes a pawl, one end of which is provided with the locking head, and the other end of which is provided with the pivot 7 and the slider 6.

[0042] like Figure 1As shown, the locking head of the ratchet pawl is engaged in the tooth groove of the parking gear 9, and the parking gear 9 cannot rotate. In this state, the slider 6 is in the locking section of the guide groove 10, that is, the slider 6 is in the second arc groove 13. When the lock needs to be released, the parking motor 1 drives the driving gear 2 to rotate, driving the driven gear 3 to rotate, and the slider 6 reaches the unlocking section after passing through the transition groove 12. During this process, the ratchet pawl continues to rotate around the pivot 7, and its locking head is separated from the tooth groove of the parking gear 9, realizing the separation of the locking mechanism and the parking gear 9. The state after separation is as shown in FIG. Figure 4 As shown, in this state, the parking gear 9 is in an unlocked state and the power transmission shaft can rotate.

[0043] like Figure 5 , Figure 6 As shown, the vehicle electronic parking mechanism of the present invention can also adopt another structural form, which also includes a parking motor 1, a gear reduction mechanism, a parking gear 9 and a locking mechanism. The locking mechanism also includes a guide rail groove 10, a slider 6, a pivot 7 and a locking member 8. The difference from the above embodiment is that the specific structure of the locking member 8 is different.

[0044] The locking member 8 in this embodiment includes a frame 14, a locking rod 15 and a limiting member 16; one end of the frame 14 is provided with the pivot 7 and the slider 6, and the other end of the frame 14 is rotatably connected to one end of the locking rod 15; the other end of the locking rod 15 is provided with the locking head; the limiting member 16 is connected to the environmental structure and surrounds the locking rod 15 to limit the radial displacement of the locking rod 15. The limiting member 16 includes a sliding bearing, which is coaxially sleeved on the locking rod 15. Figure 5 For example, the sliding bearing can limit the lateral displacement of the locking rod 15 so that the locking rod 15 can only slide vertically to achieve locking or unlocking of the parking gear 9.

[0045] The frame 14 and the locking rod 15 are rotatably connected via a pin.

[0046] Specifically, the frame 14 includes a triangular plate, and the pivot 7, the slider 6 and the pin are respectively arranged at three corner ends of the triangular plate in a one-to-one correspondence.

[0047] When the driven gear 3 in this embodiment rotates and drives the slider 6 to slide, the frame 14 slides along with it. At the same time, due to the limitation of the pivot 7, the frame 14 rotates around the pivot 7. Under the action of the shaft pin 17 and the limit member 16, the rotational motion of the frame 14 is converted into a linear reciprocating motion of the locking rod 15.

[0048] Figure 5The locking rod 15 in the illustrated embodiment is arranged vertically. Of course, its vertical arrangement depends on the relative position of the parking gear 9 and the driven gear 3. In this embodiment, since the parking gear 9 is arranged below the driven gear 3, the locking rod 15 is arranged vertically so that the locking rod 15 moves vertically. When the lower end of the locking rod 15 is inserted into the tooth groove of the parking gear 9, the parking gear 9 is locked. When the lower end of the locking rod 15 is separated from the tooth groove of the parking gear 9, the parking gear 9 is unlocked. The lower end of the locking rod 15 can also be arranged as a claw structure to better lock with the tooth groove of the parking gear 9.

[0049] like Figure 7 As shown, the lower end of the locking rod 15 leaves the tooth groove of the parking gear 9 and is located above the parking gear 9, which does not affect the rotation of the parking gear 9. In this state, the parking gear 9 is in an unlocked state and the power transmission shaft can rotate.

[0050] Based on the same inventive concept, the present invention also provides a vehicle, comprising the vehicle electronic parking mechanism of any one of the above embodiments.

[0051] The present invention provides a power source through the parking motor 1, avoids the complex structure of the manual cable parking mechanism, does not need the driver to provide driving force, is easy to realize automatic control, and improves the driver's operating comfort; the speed of the parking motor 1 can be reduced by the gear reduction mechanism to increase the torque, and the transmission efficiency is high; by opening a guide groove 10 on the driven gear 3 to facilitate the sliding of the slider 6 in the guide groove 10, the driven gear 3 and the guide groove 10 are integrated into one, the number of components is reduced, the complexity of the parking mechanism is reduced, and the overall structure is simple and reliable.

[0052] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0053] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

Claims

1. A vehicle electronic parking mechanism, characterized in that: include: Parking motor; A gear reduction mechanism, comprising a driving gear and a driven gear meshing with each other, wherein the driving gear is connected to the parking motor; The parking gear is mounted on the power transmission shaft; as well as The locking mechanism comprises a guide rail groove, a slider, a pivot and a locking member, wherein the guide rail groove is arranged on the end face of the driven gear, the guide rail groove comprises a continuous unlocking section and a locking section, the slider is arranged in the guide rail groove and slidably cooperates with the guide rail groove, the pivot is fixedly connected to the environmental structure, the pivot is also rotationally cooperated with the locking member, the locking member is also connected to the slider, and a locking head is arranged on the locking member; while the driven gear rotates to drive the slider to slide in the locking section or the unlocking section, the locking member is rotated around the pivot to achieve meshing or separation of the locking head with the tooth groove of the parking gear; The unlocking section and the locking section are both arc-shaped grooves; The unlocking section includes a first arc-shaped groove, the locking section includes a second arc-shaped groove, and the first arc-shaped groove and the second arc-shaped groove are concentric with the driven gear, the radius of the first arc-shaped groove is greater than the radius of the second arc-shaped groove, and a connecting transition groove is further provided between the first arc-shaped groove and the second arc-shaped groove; The two ends of the first arc-shaped groove are respectively connected to the two ends of the second arc-shaped groove through transition grooves; The sliding block includes a cylindrical sliding column arranged in the guide rail groove, the groove widths of the first arc groove, the second arc groove and the transition groove are all the same, and the arc side wall of the sliding column abuts against the groove walls of the first arc groove, the second arc groove and the transition groove.

2. The vehicle electronic parking mechanism according to claim 1, characterized in that: The locking member comprises a pawl, one end of which is provided with the locking head, and the other end of which is provided with the pivot and the slider.

3. The vehicle electronic parking mechanism according to claim 1, characterized in that: The locking member comprises a frame, a locking rod and a limit member; one end of the frame is provided with the pivot and the slider, and the other end of the frame is rotatably connected to one end of the locking rod; the other end of the locking rod is provided with the locking head; The limiting member is connected to the environmental structure and surrounds the locking rod to limit the radial displacement of the locking rod.

4. The vehicle electronic parking mechanism according to claim 3, characterized in that: The limiting member comprises a sliding bearing, and the sliding bearing is coaxially sleeved on the locking rod.

5. The vehicle electronic parking mechanism according to claim 3, characterized in that: The frame is rotatably connected to the locking rod via a pin.

6. The vehicle electronic parking mechanism according to claim 5, characterized in that: The frame comprises a triangular plate, and the pivot, the slider and the pin are respectively arranged at three corner ends of the triangular plate in a one-to-one correspondence.

7. A vehicle, characterized in that: The invention comprises the vehicle electronic parking mechanism as claimed in any one of claims 1 to 6.

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