Parking device and vehicle

Abstract

The utility model provides a parking device and a vehicle, and relates to the technical field of parking. The parking device comprises a driving mechanism, a locking mechanism, a pawl-ratchet wheel mechanism and a pull rod mechanism, the pawl-ratchet wheel mechanism comprises a pawl assembly and a ratchet wheel, the ratchet wheel is used for being matched with the pawl assembly, the locking mechanism and the pull rod mechanism are both connected with the driving mechanism, the locking mechanism is used for locking the driving mechanism, and the pull rod mechanism is used for pulling the pawl assembly. The driving mechanism is used for driving the pull rod mechanism to move in the preset direction, the pull rod mechanism can drive the pawl assembly to rotate in the moving process, and then clamping (parking state) or separation (non-parking state) with the ratchet wheel is achieved. According to the whole structure, under the action that the locking plate is matched with the first locking groove or the locking plate is matched with the second locking groove, accidents of accidental unlocking or abnormal parking in the driving process can be avoided, and therefore safety is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of parking, and more particularly, to a parking device and a vehicle. Background Art

[0002] The transmission parking device is a structure that prevents a vehicle from skidding or rolling backward when the vehicle is parked on a road surface or a slope. The existing electronic parking device has a complex transmission structure, high cost, and large volume, which is not conducive to the energy-saving design of the transmission. When a hydraulic parking structure is adopted, the prior art does not provide a reliable locking mechanism, and in the case of unstable hydraulic pressure, safety accidents such as accidental unlocking of the parking structure or abnormal parking during driving may occur. Summary of the Utility Model

[0003] The purpose of this application is to provide a parking device and a vehicle, which can avoid accidents such as accidental unlocking or abnormal parking during driving and ensure safety.

[0004] To achieve the above object, this application adopts the following technical solutions:

[0005] In a first aspect, this application provides a parking device, including: a driving mechanism configured to drive in a preset direction, and the driving mechanism is provided with a first locking groove and a second locking groove along the preset direction; a locking mechanism including an electromagnetic actuator, a locking plate, and a reset component, the electromagnetic actuator and the reset component are both configured to be connected to the driving mechanism, the locking plate is rotatably connected to the driving mechanism, and one end of the locking plate contacts the electromagnetic actuator and the other end contacts the reset component, so that when the locking plate is located in the first locking groove, a non-parking state is formed, the electromagnetic actuator drives the locking plate to disengage from the first locking groove, the second locking groove moves to the position of the locking plate, and the locking plate is locked in the second locking groove through the reset component to form a parking state; a pull rod mechanism including a pull rod component, a roller component, a ratchet-pawl mechanism, and a support member, one end of the pull rod component contacts the driving mechanism, the other end thereof passes through the roller component and is connected to the support member, the ratchet-pawl mechanism is arranged on one side of the pull rod component, and the ratchet-pawl mechanism includes a pawl component and a ratchet; wherein the roller component has a first position and a second position. When the output end of the driving mechanism rotates out and drives the pull rod component to move, so that the roller component is located in the second position, the ratchet is engaged with the pawl component to form the parking state. When the output end of the driving mechanism rotates in, the pull rod component moves in a direction close to the output end and drives the roller component to switch from the second position to the first position, and the ratchet is disengaged from the pawl component to switch to the non-parking state.

[0006] In the above implementation process, the driving mechanism is configured with a first locking groove and a second locking groove. The locking mechanism is connected to the driving mechanism. Among them, the electromagnetic actuator is located on one side of the locking plate, and the reset assembly is located on the other side of the locking plate. One end of the pull rod assembly contacts the driving mechanism, and the other end is connected to the support member, which can reduce the lateral force received by the driving mechanism, improve the stability and service life of the parking device. The roller assembly is sleeved on the pull rod assembly so that the driving mechanism drives the roller assembly to move along one side of the support member. The locking plate forms a snap connection with the second locking groove through the reset assembly, thereby forming a parking state. When driving is required, the electromagnetic actuator drives the locking plate to rotate, causing the locking plate to disengage from the second locking groove. The driving mechanism drives the roller assembly to move along the other side closer to the support member. At this time, the electromagnetic actuator is powered off and does not work. Under the action of the reset assembly, the locking plate forms a snap connection with the first locking groove, successively forming a non-parking state. Its overall structure can avoid accidents of accidental unlocking or abnormal parking during driving under the matching action of the locking plate and the first locking groove or the locking plate and the second locking groove, thus ensuring safety.

[0007] In some embodiments, the reset assembly includes a reset spring and a positioning pin. A convex portion is configured on one side of the locking plate close to the reset spring. One end of the reset spring is sleeved on the positioning pin, and the other end is sleeved on the convex portion.

[0008] In the above implementation process, one end of the reset spring is sleeved on the positioning pin, and the other end is sleeved on the convex portion of the locking plate. When the electromagnetic actuator works, it drives the locking plate to disengage from the first locking groove or the second locking groove. At this time, the reset spring is gradually in a compressed state. When the electromagnetic actuator is powered off and does not work, the locking plate forms a snap connection with the second locking groove under the action of the reset spring, forming a parking state, which can avoid accidental unlocking, or forms a snap connection with the first locking groove, forming a non-parking state, which can avoid accidents of abnormal parking during driving, contributing to driving safety.

[0009] In some embodiments, the locking plate includes a driving arm, a locking arm, and a connecting arm. The driving arm is connected to the electromagnetic actuator. The locking arm can be snapped into or disengaged from the first locking groove and the second locking groove. An opening is formed between the driving arm and the locking arm, and the opening is configured to be adapted to the first locking groove or the second locking groove. The connecting arm connects the driving arm and the locking arm, and the connecting arm is configured with the convex portion connected to the reset assembly.

[0010] In the above-mentioned implementation process, the driving arm and the locking arm are located on the same side of the locking plate to form an opening for adapting to the first locking groove or the second locking groove. The connecting arm is provided with a convex portion, so that after the convex portion cooperates with the reset component, under the action of the reset component, the opening is snapped with the first locking groove or the second locking groove and maintains a stable posture. When the locking plate and the first locking groove or the locking plate and the second locking groove are squeezed from the side, the contact area is large, the force is uniform, the contact stress is small, and it is not easy to wear, making the positioning work more reliable.

[0011] In some embodiments, the pull rod assembly includes a pull rod member and a parking spring, the pull rod member is distributed along the preset direction, and the pull rod member is spaced apart with a first abutment portion and a second abutment portion, the roller assembly is arranged between the first abutment portion and the second abutment portion, one end of the parking spring abuts against the second abutment portion, and the other end abuts against the bracket member.

[0012] In the above-mentioned implementation process, the pull rod member is alternately arranged with a first abutment portion and a second abutment portion, and the roller assembly and the parking spring are both arranged between the first abutment portion and the second abutment portion. When the parking device is switched to the parking state, the driving mechanism drives the pull rod member to move. At this time, the parking spring is compressed in a very short time. In the process of pushing the roller assembly to move, the ratchet gradually disengages from the pawl assembly. At this time, the parking device gradually changes to a non-parking state. When the parking device needs to be switched to the parking state, the pull rod member drives the roller assembly to move to the other side under the action of the parking spring, and the parking spring returns to its original state. The whole process has a small unlocking force, reduces lateral force, runs smoothly, has good reliability, can maintain a stable posture, and prevents accidental unlocking of the parking state. In the non-parking state, the parking spring is close to a free state, without compression, and will not cause potential abnormal parking, which is conducive to driving safety.

[0013] In some embodiments, the pull rod member is disposed on a side away from the driving mechanism and passes through the bracket member and extends to the outside of the bracket member, and the pull rod member is provided with a limiting portion, which is configured to limit the pull rod member to the bracket member.

[0014] In the above-mentioned implementation process, the pull rod member is passed through the bracket member and a limiting portion is arranged on the pull rod member so that the pull rod member moves under the action of the parking spring. When the pull rod member is switched to the parking state, the limiting portion can limit the pull rod member to prevent the pull rod member from detaching from the bracket member. The whole process can reduce lateral force and improve stability and service life.

[0015] In some embodiments, the roller assembly includes a cage, a first roller, and a second roller. The first roller and the second roller are both disposed in the cage. The pull rod assembly passes through the cage and is located between the first roller and the second roller. By configuring the first roller and the second roller in the cage to form an integral structure, good strength and stiffness can be ensured, meeting the requirements for long-term use under ramp load conditions.

[0016] In some embodiments, the first roller and / or the second roller are spaced apart from the pull rod assembly. By providing a gap between the first roller and the pull rod assembly and / or between the second roller and the pull rod assembly, the sliding friction damage of the first roller and the second roller can be minimized to the greatest extent, maintaining a small friction coefficient, and highlighting the advantages of small unlocking force, smooth operation, and good reliability.

[0017] In some embodiments, the bracket member includes a bracket body, a first extension edge, and a second extension edge. The first extension edge is connected to the bracket body and is used to connect to the pull rod assembly. The second extension edge is connected to the bracket body to enclose a receiving cavity, and the receiving cavity is configured to receive the roller assembly.

[0018] In the above implementation process, both the first extension edge and the second extension edge are connected to the bracket body, and the first extension edge is connected to the pull rod assembly, which can ensure that the pull rod assembly does not shift during movement. The second extension edge is used to form a receiving cavity with the bracket body, which can ensure that the roller assembly is more stable and reliable when switching between the parking state and the non-parking state.

[0019] In some embodiments, the parking device further includes a position monitoring mechanism, which is disposed outside the driving mechanism to monitor the position of the first locking groove and / or the second locking groove. By disposing the position monitoring mechanism outside the driving mechanism, the stroke of the driving mechanism can be controlled, facilitating sending instructions to the locking mechanism, thereby realizing the engagement and disengagement of the locking plate with the first locking groove, or the engagement and disengagement of the locking plate with the second locking groove.

[0020] In a second aspect, the present application further provides a vehicle, characterized in that it includes the parking device as described in any one of the above.

[0021] The vehicle provided in the embodiment of the second aspect of the present application includes the parking device described in the technical solution of the first aspect, so it has all the technical effects of the above embodiments, which will not be elaborated here.

[0022] Other features and advantages of the present application will be described in the subsequent specification, and in part will be obvious from the specification, or can be understood by implementing the embodiments of the present application. The objectives and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written specification, claims, and drawings. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of a parking device disclosed in an embodiment of the present application.

[0025] Figure 2 It is a schematic structural diagram of a parking device from another perspective disclosed in an embodiment of the present application.

[0026] Figure 3 It is a front view of a parking device disclosed in an embodiment of the present application.

[0027] Figure 4 It is a sectional view of a parking device disclosed in an embodiment of the present application.

[0028] Figure 5 It is another sectional view of a parking device disclosed in an embodiment of the present application.

[0029] Figure 6 It is a schematic diagram of a non-parking state of a parking device disclosed in an embodiment of the present application.

[0030] Figure 7 It is a schematic diagram of a parking state of a parking device disclosed in an embodiment of the present application.

[0031] Figure 8 It is a schematic structural diagram of a roller assembly of a parking device disclosed in an embodiment of the present application.

[0032] Figure 9 It is a schematic diagram of the cooperation between a roller assembly and a pull rod assembly of a parking device disclosed in an embodiment of the present application.

[0033] Reference Signs

[0034] 1. Driving mechanism; 101. End cover; 102. Cylinder block; 103. Piston rod; 104. Piston spring; 105. First locking groove; 106. Second locking groove; 2. Locking mechanism; 201. Electromagnetic actuator; 202. Locking plate; 2021. Driving arm; 2022. Locking arm; 2023. Connecting arm; 203. Pin shaft; 204. Return spring; 205. Positioning pin; 3. Magnetic element; 4. Hall sensor; 5. Elastic roll pin; 6. Tie rod mechanism; 601. Cage; 602. Roller pin; 603. First roller; 604. Parking spring; 605. Tie rod member; 606. Second roller; 7. Bracket member; 701. Bracket body; 702. First extension edge; 703. Second extension edge; 8. Pawl member; 9. Connecting shaft; 10. Return spring; 11. Ratchet wheel. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0037] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the products of this solution are usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0039] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0040] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0041] Embodiment

[0042] The parking structure of a gearbox is an important automotive safety device with extremely high requirements for service life and reliability. The parking structure generally consists of a ratchet, a pawl, and a return spring to complete the functions of locking and unlocking the transmission shaft. When the pawl rotates and engages with the ratchet under the action of an external thrust (applied by a push rod, an eccentric wheel, a roller, etc.) and can maintain the locked state, the parking function is completed, and the pawl can also be unlocked under the action of an external force.

[0043] As Figures 1-9 As shown, in a first aspect, the present application provides a parking device, including: a driving mechanism 1, a locking mechanism 2, and a pull rod mechanism 6. Both the locking mechanism 2 and the pull rod mechanism 6 are connected to the driving mechanism 1, wherein the locking mechanism 2 is used to lock the driving mechanism 1, the driving mechanism 1 is used to drive the pull rod mechanism 6 to move along a preset direction, and the pull rod mechanism 6 can drive a pawl assembly to rotate during the movement, thereby realizing the engagement (parking state) or separation (non-parking state) with a ratchet 11.

[0044] Specifically, the driving mechanism 1 is configured to drive in a preset direction, and the driving mechanism 1 is provided with a first locking groove 105 and a second locking groove 106 along the preset direction; the locking mechanism 2 includes an electromagnetic actuator 201, a locking plate 202 and a reset assembly. The electromagnetic actuator 201 and the reset assembly are both configured to be connected to the driving mechanism 1. The locking plate 202 is rotatably connected to the driving mechanism 1, and one end of the locking plate 202 contacts the electromagnetic actuator 201, and the other end contacts the reset assembly, so that when the locking plate 202 is located in the first locking groove 105, a non-parking state is formed. The electromagnetic actuator 201 drives the locking plate 202 to disengage from the first locking groove 105, and the second locking groove 106 moves to the position of the locking plate 202. The locking plate 202 is locked in the second locking groove 106 through the reset assembly to form a parking state; the pull rod mechanism 6 includes a pull rod assembly, a roller assembly, a pawl-ratchet mechanism and a bracket member 7. One end of the pull rod assembly contacts the driving mechanism 1, and the other end thereof passes through the roller assembly and is connected to the bracket member 7. The pawl-ratchet mechanism is arranged on one side of the pull rod assembly. The pawl-ratchet mechanism includes a pawl assembly and a ratchet 11; wherein the roller assembly has a first position and a second position. When the output end of the driving mechanism 1 rotates out and drives the pull rod assembly to move, so that the roller assembly is located in the second position, the ratchet 11 is engaged with the pawl assembly to form the parking state. When the output end of the driving mechanism 1 rotates in, the pull rod assembly moves in the direction close to the output end and drives the roller assembly to switch from the second position to the first position, and the ratchet 11 is disengaged from the pawl assembly to switch to the non-parking state.

[0045] Exemplarily, the driving mechanism 1 includes, but is not limited to, a hydraulic cylinder. Its specific structure includes an end cover 101, a cylinder block 102, a piston rod 103, a piston spring 104 and a sealing element. The cylinder block 102 is connected to the end cover 101. The piston rod 103 is arranged inside the cylinder block 102. The piston rod 103 is provided with the first locking groove 105 and the second locking groove 106. The piston rod 103 is clamped with the pull rod 605 of the pull rod assembly. For example, the piston rod 103 is sleeved on the pull rod 605, and the pull rod 605 is sleeved on the piston rod 103, and then connected together by an elastic cotter pin 5. The piston spring 104 is sleeved on the piston rod 103, and one end of the piston spring 104 abuts against the piston rod 103, and the other end abuts against the cylinder block 102. When the parking device switches from the non-parking state to the parking state, the piston spring 104 is gradually compressed. In order to ensure the tightness of the whole structure, the sealing element is applied between the piston rod 103 and the cylinder block 102.

[0046] It should be noted that the preset direction is the length direction of the piston rod 103, such as the left-right direction. The pull rod mechanism 6 is distributed along the preset direction. The electromagnetic actuator 201 can be arranged at any position above and below or in front and behind the piston rod 103. After the locking plate 202 is connected to the cylinder block 102, under the action of the electromagnetic actuator 201, the locking plate 202 can rotate counterclockwise or clockwise along the up-down direction. The electromagnetic actuator 201 includes but is not limited to an electromagnetic actuator. The electromagnetic actuator 201 and the hydraulic cylinder can also be replaced by a driving member as long as it can provide power, and no special limitation is made here.

[0047] In the above implementation process, the driving mechanism 1 is configured with a first locking groove 105 and a second locking groove 106. The locking mechanism 2 is connected to the driving mechanism 1. The electromagnetic actuator 201 is located on one side of the locking plate 202, and the reset assembly is located on the other side of the locking plate 202. One end of the pull rod assembly contacts the driving mechanism 1, and the other end is connected to the support member 7, which can reduce the lateral force received by the driving mechanism 1 and improve the stability and service life of the parking device. The roller assembly is sleeved on the pull rod assembly so that the driving mechanism 1 drives the roller assembly to move along one side of the support member 7. The locking plate 202 forms a snap connection with the second locking groove 106 through the reset assembly to form a parking state. When driving is required, the electromagnetic actuator 201 drives the locking plate 202 to rotate, so that the locking plate 202 disengages from the second locking groove 106. The driving mechanism 1 drives the roller assembly to move along the other side close to the support member 7. At this time, the electromagnetic actuator 201 is powered off and does not work. Under the action of the reset assembly, the locking plate 202 forms a snap connection with the first locking groove 105 to form a non-parking state in sequence. Its overall structure can avoid accidents of accidental unlocking or abnormal parking during driving under the matching action of the locking plate 202 and the first locking groove 105 or the locking plate 202 and the second locking groove 106, thus ensuring safety.

[0048] As Figure 5 shown, the reset assembly includes a reset spring 204 and a positioning pin 205. A convex portion is arranged on one side of the locking plate 202 close to the reset spring 204. One end of the reset spring 204 is sleeved on the positioning pin 205, and the other end is sleeved on the convex portion. The locking plate 202 is rotatably connected to the cylinder block 102 through a pin shaft 203. The pin shaft 203 is equivalent to a rotation fulcrum, and its position is set at any position between the two ends of the locking plate 202, and it can be ensured that both ends of the locking plate 202 can rotate along a preset track.

[0049] In the above implementation process, one end of the return spring 204 is sleeved on the positioning pin 205, and the other end is sleeved on the convex part of the locking plate 202. When the electromagnetic actuator 201 works, it drives the locking plate 202 to disengage from the first locking groove 105 or the second locking groove 106. At this time, the return spring 204 is gradually in a compressed state. When the electromagnetic actuator 201 is powered off and does not work, the locking plate 202 is engaged with the second locking groove 106 under the action of the return spring 204 to form a parking state, which can avoid accidental unlocking, or is engaged with the first locking groove 105 to form a non-parking state, which can avoid abnormal parking accidents during driving and contribute to driving safety.

[0050] Please refer to Figure 5 , the locking plate 202 includes a driving arm 2021, a locking arm 2022 and a connecting arm 2023. The locking plate 202 is rotatably connected to the driving mechanism 1. The locking arm 2022 can be engaged with or disengaged from the first locking groove 105 and the second locking groove 106. The driving arm 2021 and the locking arm 2022 are arranged on one side of the locking plate 202 to form an opening between the driving arm 2021 and the locking arm 2022. The opening is configured to be adapted to the first locking groove 105 or the second locking groove 106. The connecting arm 2023 is arranged on the other side of the locking body, and the convex part is arranged on the connecting arm 2023.

[0051] Exemplarily, the driving arm 2021 is used to contact the electromagnetic actuator 201. When the electromagnetic actuator 201 is located below the driving mechanism 1, the locking arm 2022 is located above the driving arm 2021, and the radian of the locking arm 2022 can be set to be greater than the radian of the driving arm 2021. For example, when the locking arm 2022 is engaged in the groove (the first locking groove 105 or the second locking groove 106) of the piston rod 103, a certain gap can be set between the driving arm 2021 and the groove of the piston rod 103; of course, there can also be other situations. For example, the locking arm 2022 is arranged in the groove of the piston rod 103, the locking arm 2022 has the same radian adapted to the groove of the piston rod 103, and there is a certain gap with the groove of the piston rod 103, as long as the locking plate 202 can lock and separate the piston rod 103.

[0052] In the above implementation process, the driving arm 2021 and the locking arm 2022 are located on the same side of the locking plate 202 to form an opening adapted to the first locking groove 105 or the second locking groove 106. The connecting arm 2023 is configured with a convex portion. After the convex portion cooperates with the reset assembly, under the action of the reset assembly, the opening is engaged with the first locking groove 105 or the second locking groove 106, and a stable posture is maintained. When the side surfaces of the locking plate 202 and the first locking groove 105 or the locking plate 202 and the second locking groove 106 are squeezed, the contact area is large, the force is evenly distributed, the contact stress is small, and it is not easy to wear, making the positioning work more reliable.

[0053] As Figures 1-4 shown, the pull rod assembly includes a pull rod member 605 and a parking spring 604. The pull rod member 605 is distributed along the preset direction, and the pull rod member 605 is provided with a first abutting portion and a second abutting portion at intervals. The roller assembly is disposed between the first abutting portion and the second abutting portion. One end of the parking spring 604 abuts against the second abutting portion, and the other end abuts against the bracket member 7. The first abutting portion and the second abutting portion both protrude from the outer edge of the pull rod member 605. Exemplarily, one end of the pull rod member 605 is connected to the piston rod 103 through the elastic cotter pin 5, and the other end is adapted to the bracket member 7. A through hole is provided on the bracket member 7 for the pull rod member 605 to pass through. The shape of the through hole can be set as a circle, etc., and of course it can also be set as a square, which can realize the rotational limit of the pull rod member 605.

[0054] In the above implementation process, the pull rod member 605 is provided with a first abutting portion and a second abutting portion at intervals. The roller assembly and the parking spring 604 are both sleeved between the first abutting portion and the second abutting portion. When the parking device is switched to the parking state, the driving mechanism 1 drives the pull rod member 605 to move. At this time, the parking spring 604 is compressed in a very short time. During the process of pushing the roller assembly to move, the ratchet 11 gradually disengages from the pawl assembly. At this time, the parking device gradually becomes a non-parking state. When the parking device needs to be switched to the parking state, the pull rod member 605 drives the roller assembly to move to the other side under the action of the parking spring 604, and the parking spring 604 returns to its original state. The unlocking force is small, the lateral force is reduced, the operation is stable, the reliability is good, it can maintain a stable posture, prevent accidental unlocking of parking, and when in the non-parking state, the parking spring 604 is close to the free state, without compression, and will not cause potential abnormal parking, which helps to ensure driving safety.

[0055] In some embodiments, the pull rod member 605 is inserted into the bracket member 7 on the side facing away from the driving mechanism 1 and extends to the outside of the bracket member 7, and the pull rod member 605 is provided with a limiting portion, which is configured to limit the pull rod member 605 to the bracket member 7.

[0056] In the above-mentioned implementation process, the pull rod member 605 is passed through the bracket member 7, and a limiting portion is configured on the pull rod member 605, so that the pull rod member 605 moves under the action of the parking spring 604. When switching to the parking state, the limiting portion can limit the pull rod member 605 to prevent the pull rod member 605 from detaching from the bracket member 7. The whole process can reduce lateral force and improve stability and service life.

[0057] like Figures 8-9 As shown, the roller assembly includes a cage 601, a first roller 603 and a second roller 606. The first roller 603 and the second roller 606 are both arranged on the cage 601 (the first roller 603 and the second roller 606 can be fixed to the cage 601 by roller pins 602). The pull rod assembly is passed through the cage 601 and is located between the first roller 603 and the second roller 606. By arranging the first roller 603 and the second roller 606 on the cage 601 to form an integrated structure, it is possible to ensure good strength and rigidity, and meet the requirements for long-term use under ramp load conditions.

[0058] In some embodiments, the first roller 603 and / or the second roller 606 are spaced apart from the pull rod assembly, wherein the first roller 603 can be used to abut against the second extension edge 703 of the bracket member 7, and the second roller 606 can be used to abut against the pawl member 8 of the pawl-ratchet mechanism. By providing a gap between the first roller 603 and the pull rod assembly, and / or providing a gap between the second roller 606 and the pull rod assembly, the sliding friction damage of the first roller 603 and the second roller 606 can be minimized to the greatest extent, and a small friction coefficient is maintained, highlighting the advantages of small unlocking force, smooth operation, and good reliability.

[0059] In some embodiments, the bracket member 7 includes a bracket body 701, a first extension edge 702, and a second extension edge 703. The bracket body 701, the first extension edge 702, and the second extension edge 703 can be integrally formed as a whole. The first extension edge 702 is connected to the bracket body 701 and is used to connect to the tie rod assembly. The second extension edge 703 is connected to the bracket body 701 to enclose a receiving cavity, and the receiving cavity is configured to receive the roller assembly. The second extension edge 703 can be configured in an "L" shape, and a sliding groove is provided on one side of the second extension edge 703. The sliding groove is configured to receive the roller pin 602, so as to limit the movement of the first roller 603 and the second roller 606.

[0060] In the above implementation process, both the first extension edge 702 and the second extension edge 703 are connected to the bracket body 701, and the first extension edge 702 is connected to the tie rod assembly, which can ensure that the tie rod assembly does not shift during movement. The second extension edge 703 is used to form a receiving cavity with the bracket body 601, which can ensure that the roller assembly is more stable and reliable when switching between the parking state and the non-parking state.

[0061] As Figures 1-3 shown, the parking device further includes a pawl-ratchet mechanism. The pawl-ratchet mechanism includes a pawl assembly and a ratchet 11. The pawl assembly includes a pawl member 8, a connecting shaft 9, and a return spring 10. The connecting shaft 9 passes through the pawl member 8, and the return spring 10 is sleeved on the connecting shaft 9 for the return of the pawl member 8. The pawl assembly and the ratchet assembly are arranged on one side of the tie rod assembly, and the extension line A of the contact surface between the pawl-ratchet mechanism and the second roller 606 and the center line B of the tie rod assembly are distributed at a preset angle. The preset angle is slightly greater than 0°, such as 2-4°. When the pawl assembly is engaged with the ratchet 11, the parking state is formed. The ratchet 11 is installed on the input shaft of the electric drive or the transmission to bear the wheel end reaction force.

[0062] In the above implementation process, when the drawbar assembly drives the roller assembly to move under the action of the driving mechanism 1 to form a parking state, the second roller 606 of the roller assembly can drive the pawl assembly to rotate during the movement, so that the pawl assembly is engaged with the ratchet wheel 11, and the extension line of the contact surface between the pawl-ratchet mechanism and the second roller 606 is distributed at a preset angle with the center line of the drawbar assembly. Thus, the pawl-ratchet mechanism can apply pressure to the second roller 606 to prevent the parking device from being accidentally unlocked. When the drawbar assembly drives the roller assembly to move in the opposite direction under the action of the driving mechanism 1 to form a non-parking state, the pawl assembly can rotate and reset in the opposite direction, and then the pawl assembly is disengaged from the ratchet wheel 11.

[0063] In some embodiments, the parking device further includes a position monitoring mechanism, which is disposed outside the driving mechanism 1 for monitoring the positions of the first locking groove 105 and / or the second locking groove 106. The position monitoring mechanism includes a Hall sensor 4 and a magnetic element 3. The magnetic element 3 can be disposed at the connection position between the piston rod 103 and the drawbar member 605, and the Hall sensor 4 can be disposed on the support member 7. By disposing the position monitoring mechanism outside the driving mechanism 1, it is used to control the stroke of the driving mechanism 1, facilitate sending instructions to the locking mechanism 2, and thus realize the engagement and disengagement between the locking plate 202 and the first locking groove 105, or the engagement and disengagement between the locking plate 202 and the second locking groove 106.

[0064] In a second aspect, the present application further provides a vehicle, which is characterized by including the parking device as described above. The vehicle includes, but is not limited to, motor vehicles using an automatic transmission, which are installed with the parking device according to the above embodiments.

[0065] The vehicle provided by the second aspect embodiment of the present application has all the technical effects of the above embodiments because it includes the parking device described in the technical solution of the first aspect, and will not be elaborated here.

[0066] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A parking device, characterized in that: include: A driving mechanism, which is configured to drive along a preset direction, and the driving mechanism is configured with a first locking groove and a second locking groove along the preset direction; A locking mechanism, comprising an electromagnetic actuator, a locking plate and a reset assembly, wherein the electromagnetic actuator and the reset assembly are both configured to be connected to the driving mechanism, the locking plate is rotatably connected to the driving mechanism, and one end of the locking plate contacts the electromagnetic actuator, and the other end contacts the reset assembly, so that when the locking plate is located in the first locking groove, a non-parking state is formed, the electromagnetic actuator drives the locking plate to disengage from the first locking groove, the second locking groove moves to the locking plate, and the locking plate is locked in the second locking groove by the reset assembly to form a parking state; A pull rod mechanism, comprising a pull rod assembly, a roller assembly, a pawl-ratchet mechanism and a bracket, wherein one end of the pull rod assembly contacts the driving mechanism, and the other end thereof passes through the roller assembly and is connected to the bracket, the pawl-ratchet mechanism is arranged on one side of the pull rod assembly, and the pawl-ratchet mechanism comprises a pawl assembly and a ratchet; The roller assembly has a first position and a second position. When the output end of the driving mechanism is rotated out and drives the pull rod assembly to move, so that the roller assembly is located in the second position, the ratchet and the pawl assembly are engaged to form the parking state. When the output end of the driving mechanism is rotated in, the pull rod assembly moves in a direction close to the output end and drives the roller assembly to switch from the second position to the first position, the ratchet and the pawl assembly are disengaged to switch to the non-parking state.

2. The parking device according to claim 1, characterized in that: The reset assembly includes a reset spring and a positioning pin. A convex portion is arranged on one side of the locking plate close to the reset spring. One end of the reset spring is sleeved on the positioning pin, and the other end of the reset spring is sleeved on the convex portion.

3. The parking device according to claim 2, characterized in that: The locking plate includes a driving arm, a locking arm and a connecting arm, the driving arm is connected to the electromagnetic actuator, the locking arm can be buckled into or out of the first locking groove and the second locking groove, an opening is formed between the driving arm and the locking arm, the opening is configured to be adapted to the first locking groove or the second locking groove, the connecting arm connects the driving arm and the locking arm, and the connecting arm is configured with the protrusion connected to the reset assembly.

4. The parking device according to claim 1, characterized in that: The pull rod assembly includes a pull rod member and a parking spring. The pull rod member is distributed along the preset direction, and the pull rod member is spaced apart with a first abutment portion and a second abutment portion. The roller assembly is arranged between the first abutment portion and the second abutment portion. One end of the parking spring abuts against the second abutment portion, and the other end abuts against the bracket member.

5. The parking device according to claim 4, characterized in that: The pull rod member is disposed on a side away from the driving mechanism and passes through the bracket member and extends to the outside of the bracket member. The pull rod member is provided with a limiting portion, and the limiting portion is configured to limit the pull rod member to the bracket member.

6. The parking device according to claim 1 or 4, characterized in that: The roller assembly includes a retaining frame, a first roller and a second roller. The first roller and the second roller are both arranged on the retaining frame. The pull rod assembly passes through the retaining frame and is located between the first roller and the second roller.

7. The parking device according to claim 6, characterized in that: The first roller and / or the second roller are spaced apart from the tie rod assembly.

8. The parking device according to claim 6, characterized in that: The bracket member includes a bracket body, a first extension edge and a second extension edge, the first extension edge is connected to the bracket body, the first extension edge is used to connect to the pull rod assembly, and the second extension edge is connected to the bracket body to enclose and form a accommodating cavity, and the accommodating cavity is configured to accommodate the roller assembly.

9. The parking device according to claim 1, characterized in that: The parking device further includes a position monitoring mechanism, which is disposed outside the driving mechanism and is used to monitor the position of the first locking groove and / or the second locking groove.

10. A vehicle, characterized in that: The invention comprises a parking device as claimed in any one of claims 1 to 9.

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