Buffering parking lock movement and parking lock

Abstract

The utility model belongs to the field of parking space locks, and discloses a buffering parking space lock movement and a parking space lock. The utility model discloses a buffering parking lock movement which comprises a transmission mechanism and a buffering mechanism. A driving unit; a supporting seat; a movement cover; when the driving unit drives the screw rod to rotate, the screw rod drives the nut to move along the linear track; when the nut is subjected to external impact force in the first direction, the nut drives the screw rod to move in the first buffer gap along the linear track relative to the supporting seat; the parking space lock comprises any one of the buffering parking space lock movement, a connecting arm and a blocking piece. According to the buffering parking lock machine core, power transmission is achieved through the transmission mechanism, so that the nut, the screw rod and the driving unit are subjected to buffering protection through the first buffering gap, and deformation and damage of the nut, the screw rod and the driving unit when the nut, the screw rod and the driving unit are subjected to external impact force are reduced; according to the parking lock, the buffering parking lock movement is adopted, the linear track and the connecting arm are arranged independently, and the whole structure is stable in movement.

Description

Technical Field

[0001] The utility model relates to the field of parking locks, in particular to a buffer parking lock core and a parking lock. Background Art

[0002] A parking lock is a mechanical device installed on the ground to prevent others from occupying the parking space or restrict vehicles from leaving the parking space.

[0003] Chinese patent CN113775733A discloses an improved buffer-type parking lock reducer, which adopts a power motor to output through a transmission worm and a transmission worm wheel. Furthermore, in order to achieve buffering, buffer springs and buffer plane bearings are sleeved on both sides of the middle of the transmission worm. When impacted by external force, the buffer spring enables the transmission worm to remove potential energy through axial movement, thereby avoiding the problem of thread tooth damage between the transmission worm wheel and the transmission worm. The technical solution has the following technical problems: (1) The transmission worm gear converts the 90-degree rotation of the power motor into the rotation of the transmission worm gear in the other direction, and can only drive the baffle to rotate by the rotation of the transmission worm gear; (2) When impacted by external force, the transmission worm impacts the buffer spring, and further impacts the buffer plane bearing, so that part of the removed potential energy is transferred to the buffer plane bearing. The buffer plane bearing is prone to failure due to long-term impact, thereby affecting the integrated rotation of the transmission worm and the buffer spring, further affecting its service life, and another part of the removed potential energy is transferred to the power motor and the manual rotation screw of the worm, thereby affecting the service life of the power motor; (3) The buffer spring is sleeved on the outside of both sides of the transmission worm, occupying the external space of the transmission worm and affecting the effective length of the transmission worm. In order to ensure a sufficiently long effective thread, the transmission worm needs to be made relatively long, which is not conducive to the miniaturization design of the parking lock movement.

[0004] Chinese patent CN112796253B discloses a novel flat parking lock, which uses a motor to drive the baffle to flip through a screw rod, a nut slider and a rocker mechanism. In order to realize the linear sliding of the nut slider along the screw rod, a linear slide groove is directly made on the rocker mechanism, and the rocker mechanism is used to prevent the nut slider from rotating. The rocker mechanism and the baffle are coaxially arranged, and the rocker mechanism and the baffle are both flipped around the main axis. This technical solution has the following technical problems: (1) The rocker mechanism and the nut slider rotate relative to each other while moving relative to each other. The linear slide groove not only reduces the overall strength of the rocker mechanism, but also increases the assembly difficulty and transmission complexity between the rocker mechanism and the nut slider. During the long-term use of the parking lock, especially when the baffle is impacted by a vehicle, the rocker mechanism is prone to deformation and fracture; (2) The coaxial arrangement of the rocker mechanism and the baffle results in a large swing amplitude of the rocker mechanism when working, and the motor needs to output a large torque to flip the baffle, which is not conducive to the miniaturization and flattening design of the parking lock. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide a buffer parking lock movement, which uses a transmission mechanism to realize power transmission; uses a movement cover for protection; the support seat and the other end of the screw have a first buffer gap in the axial direction, and when the driving unit drives the screw to rotate, the screw drives the nut to move along a linear track, and when the nut is subjected to an external impact force in a first direction, the nut drives the screw to move relative to the support seat along the linear track in the first buffer gap, thereby utilizing the first buffer gap to provide buffer protection for the nut, screw and driving unit, reducing their deformation and damage when subjected to external impact force.

[0006] The second purpose of the utility model is to provide a parking lock, in which the linear track and the connecting arm are independently arranged, the linear track is slidably connected to the nut, and the driving unit drives the nut to move linearly along the linear track through the screw, thereby driving the connecting arm to move, while realizing the movement of the connecting arm, ensuring the strength of the connecting arm and the stability of the transmission; when the driving unit drives the screw to move, the screw drives the nut to move along the linear track, and the nut drives the baffle to flip through the connecting arm to open or close the baffle; when the baffle is in the open state and is subjected to an external impact force in a first direction, the baffle drives the nut to move through the connecting arm, and at the same time, the nut drives the screw to move relative to the support seat along the linear track within the first buffer gap; the overall structure has stable movement, so that the first buffer gap is used to provide buffering protection for the baffle, connecting arm, nut, screw and driving unit, reducing their deformation and damage when subjected to external impact force.

[0007] One of the purposes of the utility model is achieved by the following technical solution:

[0008] A buffer parking lock movement, comprising:

[0009] The transmission mechanism includes a screw, a nut threadedly connected to the screw, and a linear track slidably connected to the nut;

[0010] A driving unit, wherein an output end of the driving unit is drivingly connected to one end of the screw;

[0011] A support seat, the support seat is drivingly connected to the other end of the screw rod, and a first buffer gap is formed between the support seat and the other end of the screw rod in the axial direction;

[0012] A movement cover, in which at least one of the transmission mechanism, the drive unit and the support seat is arranged;

[0013] When the driving unit drives the screw to rotate, the screw drives the nut to move along the linear track;

[0014] When the nut is subjected to an external impact force in a first direction, the nut drives the screw rod to move relative to the support seat along a linear track within the first buffer gap.

[0015] In a preferred embodiment, one end of the screw is nested with the output end of the driving unit, a rotating member is arranged between the other end of the screw and the support seat, and the rotating member is nested with the other end of the screw;

[0016] When the driving unit drives the screw to rotate, the screw drives the nut to move along the linear track and drives the rotating part to rotate at the same time;

[0017] When the nut is subjected to an external impact force in the first direction, the nut drives the screw rod to move relative to the support seat and the rotating member along the linear track in the first buffer gap.

[0018] In a preferred embodiment, a first connecting hole and a second connecting hole are respectively provided at two axial ends of the screw rod, one axial end of the screw rod is plugged into the output end of the driving unit through the first connecting hole, and the other axial end of the screw rod is plugged into the rotating member through the second connecting hole;

[0019] The rotating member is provided with a first shaft shoulder, the end of the screw rod close to the support seat is provided with a second shaft shoulder, and the support seat is provided with a first limiting portion;

[0020] The end of the screw rod close to the rotating member is axially spaced apart from the first shaft shoulder by a first spacing, the first limiting portion is spaced apart from the second shaft shoulder by a second spacing, and the second spacing is smaller than the first spacing.

[0021] In a preferred embodiment, the buffer parking lock core further comprises a first elastic member, the first elastic member is arranged in the second connecting hole, and one axial end of the first elastic member abuts against the screw rod, and the other axial end of the first elastic member abuts against the rotating member;

[0022] When the nut is subjected to an external impact force in a first direction, the nut drives the screw rod to move along the linear track toward the rotating member and squeezes the first elastic member;

[0023] When the external impact force on the nut in the first direction disappears, the first elastic member drives the screw rod and the nut to reset.

[0024] In a preferred embodiment, the first connection hole and the second connection hole are both polygonal holes, the part where the output end of the drive unit is plugged into the first connection hole is a polygonal shaft, and the part where the rotating member is plugged into the second connection hole is a polygonal shaft.

[0025] In a preferred embodiment, the support seat includes a first seat body and a first screw sleeve, the first screw sleeve is embedded in the first seat body, and the first screw sleeve is sleeved outside the end of one end of the screw.

[0026] In a preferred embodiment, the buffer parking lock mechanism further includes a fixing seat, which is sleeved outside the connection position between the screw rod and the driving unit;

[0027] A second buffer gap is formed between the fixing seat and one end of the screw rod in the axial direction;

[0028] When the nut is subjected to an external impact force in the second direction, the nut drives the screw rod to move relative to the fixed seat along the linear track in the second buffer gap.

[0029] In a preferred embodiment, a third shoulder is provided on the output end of the driving unit, a fourth shoulder is provided on the end of the screw rod close to the driving unit, and a second limiting portion is provided on the fixing seat;

[0030] The end of the screw rod close to the driving unit is axially spaced a third distance from the third shoulder, the second limiting portion is spaced a fourth distance from the fourth shoulder, and the fourth distance is smaller than the third distance.

[0031] In a preferred embodiment, the buffer parking lock mechanism further includes a second elastic member, which is disposed in the first connecting hole, and one axial end of the second elastic member abuts against the screw rod, and the other axial end of the second elastic member abuts against the output end of the driving unit;

[0032] When the nut is subjected to an external impact force in the second direction, the nut drives the screw rod to move along the linear track toward the driving unit and squeezes the second elastic member;

[0033] When the external impact force on the nut in the second direction disappears, the second elastic member drives the screw rod and the nut to reset.

[0034] In a preferred embodiment, the fixing seat includes a second seat body and a second screw sleeve, the second screw sleeve is nested in the second seat body, and the second screw sleeve is sleeved on the end of the other end of the screw.

[0035] The second purpose of the utility model is achieved by the following technical solution:

[0036] A parking lock, comprising any one of the above buffer parking lock mechanisms, further comprising a connecting arm and a stopper, wherein one end of the connecting arm is rotatably connected to the nut, and the other end of the connecting arm is rotatably connected to the stopper;

[0037] When the driving unit drives the screw to move, the screw drives the nut to move along the linear track, and the nut drives the stopper to flip through the connecting arm to open or close the stopper;

[0038] When the blocking member is in the open state and is subjected to an external impact force in the first direction, the blocking member drives the nut to move through the connecting arm, and the nut drives the screw rod to move relative to the support seat along the linear track in the first buffer gap.

[0039] In a preferred embodiment, the parking lock further comprises a connecting seat, the blocking member is rotatably connected to the connecting seat via a main shaft, the connecting arm is rotatably connected to the blocking member via a connecting shaft, and the central axis of the main shaft and the central axis of the connecting shaft are offset from each other;

[0040] When the driving unit drives the screw to move, the screw drives the nut to move along the linear track, and the nut drives the stopper to flip around the main shaft through the connecting arm to open or close the stopper.

[0041] In a preferred embodiment, the connecting arm is fixedly connected to the connecting shaft, and the connecting shaft is rotatably connected to the stopper;

[0042] Alternatively, the connecting arm is rotatably connected to the connecting shaft, and the connecting shaft is fixedly connected to the stopper.

[0043] In a preferred embodiment, the parking lock further comprises a reinforcement member, the reinforcement member comprising a first support body, a second support body and a third support body which are integrally connected;

[0044] The first support body abuts against the side of the stopper, and a third connecting hole is provided on the first support body. The connecting shaft passes through the third connecting hole and is inserted into the upper part of the stopper, the second support body is inserted into the lower part of the stopper, and the third support body is buckled on the back of the stopper.

[0045] In summary, the utility model has the following technical effects:

[0046] 1. The buffer parking lock movement of the utility model utilizes a transmission mechanism to realize power transmission. The transmission mechanism includes a screw, a nut threadedly connected to the screw, and a linear track slidably connected to the nut; a movement cover is used for protection; a support seat and the other end of the screw have a first buffer gap in the axial direction. When the driving unit drives the screw to rotate, the screw drives the nut to move along the linear track. When the nut is subjected to an external impact force in a first direction, the nut drives the screw to move relative to the support seat along the linear track in the first buffer gap, thereby utilizing the first buffer gap to provide buffer protection for the nut, the screw and the driving unit, thereby reducing their deformation and damage when subjected to external impact force.

[0047] 2. In the buffer parking lock mechanism of the utility model, on the basis of being provided with a first elastic member, the end of the screw rod close to the rotating member is axially spaced apart from the first shoulder at a first spacing, the first limiting portion is spaced apart from the second shoulder at a second spacing, and the second spacing is smaller than the first spacing, so that when the nut is subjected to an external impact force in the first direction, the nut and the screw rod transmit the impact force to the support seat, thereby preventing the impact force from being transmitted to the rotating member and causing deformation and damage thereof.

[0048] 3. In the buffer parking lock mechanism of the utility model, on the basis of being provided with a first elastic member and a second elastic member, the end of the screw rod close to the rotating member is axially spaced from the first shoulder at a first spacing, the first limiting portion is spaced from the second shoulder at a second spacing, and the second spacing is smaller than the first spacing, so that when the nut is subjected to an external impact force in the first direction, the nut and the screw rod transmit the impact force to the support seat, thereby preventing the impact force from being transmitted to the rotating member and causing deformation and damage thereof; the end of the screw rod close to the driving unit is axially spaced from the third shoulder at a third spacing, the second limiting portion is spaced from the fourth shoulder at a fourth spacing, and the fourth spacing is smaller than the third spacing, so that when the nut is subjected to an external impact force in the second direction, the nut and the screw rod transmit the impact force to the support seat, thereby preventing the impact force from being transmitted to the output end of the driving unit and causing deformation and damage thereof.

[0049] 4. The buffer parking lock mechanism of the utility model sets the first elastic member in the second connecting hole. In the case where the second elastic member is set, the second elastic member is set in the first connecting hole. In this way, the first elastic member and the second elastic member are set inside the screw to avoid the first elastic member and the second elastic member occupying the external space of the screw, thereby ensuring the effective length of the screw and facilitating the miniaturized design of the parking lock mechanism.

[0050] 5. The parking lock of the utility model adopts the above-mentioned buffer parking lock movement, the linear track and the connecting arm are independently arranged, the linear track and the nut are slidably connected, and the driving unit drives the nut to move linearly along the linear track through the screw, thereby driving the connecting arm to move, while realizing the movement of the connecting arm, ensuring the strength of the connecting arm and the stability of the transmission; when the driving unit drives the screw to move, the screw drives the nut to move along the linear track, and the nut drives the baffle to flip through the connecting arm to open or close the baffle; when the baffle is in the open state and is subjected to an external impact force in a first direction, the baffle drives the nut to move through the connecting arm, and at the same time, the nut drives the screw to move relative to the support seat along the linear track within the first buffer gap; the overall structure has stable movement, so that the first buffer gap is used to buffer and protect the baffle, connecting arm, nut, screw and driving unit, reducing their deformation and damage when subjected to external impact force.

[0051] 6. In the parking lock of the utility model, the central axis of the main shaft and the central axis of the connecting shaft are offset from each other, and the screw, nut, linear track, connecting arm, connecting shaft, main shaft and stopper constitute a slider connecting rod mechanism, which drives the stopper to flip by cooperating with the connecting arm through the movement of the nut, so that the driving unit can drive the stopper to flip by outputting a small torque, and the overall movement amplitude of the connecting arm is small, which is conducive to the flat design of the parking lock.

[0052] 7. The parking lock of the utility model utilizes a reinforcing member to strengthen the strength of the connecting shaft and the stopper, thereby alleviating deformation and cracking of the connecting shaft and the stopper. The reinforcing member not only strengthens the strength of the connecting shaft and the stopper, but also realizes the connection between the reinforcing member, the connecting shaft and the stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of the external structure of the parking lock of the utility model in a flat and closed state;

[0054] Figure 2 For this utility model Figure 1 Schematic diagram of the decomposition structure;

[0055] Figure 3 For this utility model Figure 1 Schematic diagram of the internal structure;

[0056] Figure 4 It is a schematic structural diagram of the parking lock mechanism of the utility model in a horizontally closed state from a first perspective;

[0057] Figure 5 It is a second perspective structural schematic diagram of the parking lock mechanism of the utility model in a horizontally closed state;

[0058] Figure 6 This is a schematic diagram of the internal structure of the parking lock of the utility model in an upright and open state;

[0059] Figure 7 It is a first-view structural diagram of the parking lock mechanism of the utility model in an upright and open state;

[0060] Figure 8 It is a second perspective structural schematic diagram of the parking lock mechanism of the utility model in an upright and open state;

[0061] Fig. 9 For this utility model Figure 8 A schematic cross-sectional view in the AA direction;

[0062] Fig.10 For this utility model Figure 8 A cross-sectional schematic diagram in the BB direction;

[0063] Fig.11 It is a cross-sectional schematic diagram in the BB direction when the parking lock mechanism of the utility model is in an upright and open state and is subjected to external impact force;

[0064] Fig.12 It is a structural schematic diagram of the nut of the utility model;

[0065] Fig.13 This is a schematic diagram of the connection structure of the nut, connecting arm, connecting shaft and reinforcement member of the utility model;

[0066] Fig.14 For this utility model Figure 1 Schematic diagram of top view;

[0067] Fig.15 For this utility model Fig.14 A cross-sectional schematic diagram in the CC direction;

[0068] Fig.16 For this utility model Fig.15 A partial schematic diagram of

[0069] Fig.17 For this utility model Fig.14 A cross-sectional schematic diagram of the DD direction;

[0070] Fig.18 It is a side view schematic diagram of the parking lock of the utility model in an upright and open state;

[0071] Fig.19 For this utility model Fig.18 Schematic diagram of the internal structure.

[0072] Fig. 20 This is a structural schematic diagram of the connecting seat of the utility model from a first perspective;

[0073] Fig.21 This is a structural schematic diagram of the connecting seat of the utility model from a second viewing angle;

[0074] Fig. 22 This is a schematic structural diagram of the reinforcement of the utility model from a first perspective.

[0075] The meanings of the reference numerals are as follows:

[0076] 10. Transmission mechanism, 101. Screw, 102. Nut, 103. Linear track, 104. First connecting hole, 105. Second connecting hole, 106. Second shoulder, 107. Fourth shoulder, 108. Connecting convex part, 20. Driving unit, 30. Support seat, 301. First seat body, 302. First screw sleeve, 40. Movement cover, 50. Rotating part, 60. First shoulder, 70. First limiting part, 80. First elastic part, 90. Bearing, 100. Fixed seat, 1001. Second seat body , 1002, second screw sleeve, 110, third shoulder, 120, second limiting portion, 130, connecting arm, 140, stopper, 150, connecting seat, 160, main shaft, 170, connecting shaft, 180, base plate, 190, first mounting hole, 200, second mounting hole, 210, third elastic member, 220, detection unit, 230, reinforcement member, 2301, first support body, 2302, second support body, 2303, third support body, 2304, third connecting hole, 2305, connecting member.

[0077] a. First buffer gap, b. Second buffer gap, c. Active gap. DETAILED DESCRIPTION

[0078] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0079] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0081] See also Figure 1-Figure 22 The utility model discloses a buffer parking lock movement, including: a transmission mechanism 10, the transmission mechanism 10 includes a screw 101, a nut 102 threadedly connected to the screw 101, and a linear track 103 slidably connected to the nut 102; a driving unit 20, the output end of the driving unit 20 is transmission-connected to one end of the screw 101; a support seat 30, the support seat 30 is transmission-connected to the other end of the screw 101, and the support seat 30 and the other end of the screw 101 have a first buffer gap in the axial direction; a movement cover 40, at least one of the transmission mechanism 10, the driving unit 20 and the support seat 30 is arranged in the movement cover 40; when the driving unit 20 drives the screw 101 to rotate, the screw 101 drives the nut 102 to move along the linear track 103; when the nut 102 is subjected to an external impact force in the first direction, the nut 102 drives the screw 101 to move relative to the support seat 30 along the linear track 103 in the first buffer gap.

[0082] In this way, the buffer parking lock movement of the utility model utilizes the transmission mechanism 10 to realize power transmission. The transmission mechanism 10 includes a screw 101, a nut 102 threadedly connected to the screw 101, and a linear track 103 slidably connected to the nut 102; the movement cover 40 is used for protection; the support seat 30 and the other end of the screw 101 have a first buffer gap in the axial direction. When the driving unit 20 drives the screw 101 to rotate, the screw 101 drives the nut 102 to move along the linear track 103. When the nut 102 is subjected to an external impact force in a first direction, the nut 102 drives the screw 101 to move relative to the support seat 30 along the linear track 103 in the first buffer gap, thereby utilizing the first buffer gap to provide buffer protection for the nut 102, the screw 101 and the driving unit 20, thereby reducing their deformation and damage when subjected to external impact force.

[0083] In order to realize the waterproof and dustproof function of the buffer parking lock movement and extend its service life, a movement cover 40 is provided. The movement cover 40 can cover the entire parking lock movement, or only cover a certain component. For example, the movement cover 40 is provided on the outside of the driving unit 20, or the movement cover 40 is provided on the outside of the transmission mechanism 10, or the movement cover 40 is provided on the outside of the support seat 30, or is provided at the connection position of each component. The specific setting position, specific setting size and specific structure of the movement cover 40 shall be based on the specific application scenario, and shall not affect the movement of the nut 102, but is not limited to this.

[0084] Specifically, the driving unit 20 is a motor, and the linear track 103 is arranged in parallel beside the screw rod 101 .

[0085] Specifically, threads are provided on the screw rod 101 and the nut 102 . The threads on the screw rod 101 and the threads on the nut 102 cooperate with each other. To improve the strength, the threads on the screw rod 101 and the threads on the nut 102 are both rectangular threads.

[0086] See also Figure 10-11 In an embodiment of the utility model, one end of the screw 101 is nested with the output end of the driving unit 20, and a rotating member 50 is arranged between the other end of the screw 101 and the support seat 30, and the rotating member 50 is nested with the other end of the screw 101; when the driving unit 20 drives the screw 101 to rotate, the screw 101 drives the nut 102 to move along the linear track 103, and drives the rotating member 50 to rotate at the same time; when the nut 102 is subjected to an external impact force in a first direction, the nut 102 drives the screw 101 to move relative to the support seat 30 and the rotating member 50 along the linear track 103 in the first buffer gap.

[0087] In the embodiment of the utility model, a first connecting hole 104 and a second connecting hole 105 are respectively provided at two axial ends of the screw 101, one axial end of the screw 101 is plugged into the output end of the drive unit 20 through the first connecting hole 104, and the other axial end of the screw 101 is plugged into the rotating member 50 through the second connecting hole 105; a first shoulder 60 is provided on the rotating member 50, a second shoulder 106 is provided at one end of the screw 101 close to the support seat 30, and a first limiting portion 70 is provided on the support seat 30; the end of the screw 101 close to the rotating member 50 is axially spaced apart from the first shoulder 60 at a first spacing, the first limiting portion 70 is spaced apart from the second shoulder 106 at a second spacing, and the second spacing is smaller than the first spacing.

[0088] Continue reading Figure 10-11 In an embodiment of the utility model, the buffer parking lock movement also includes a first elastic member 80, which is arranged in the second connecting hole 105, and one axial end of the first elastic member 80 abuts against the screw 101, and the other axial end of the first elastic member 80 abuts against the rotating member 50; when the nut 102 is subjected to an external impact force in the first direction, the nut 102 drives the screw 101 to move along the linear track 103 toward the direction close to the rotating member 50, and squeezes the first elastic member 80; when the external impact force in the first direction applied to the nut 102 disappears, the first elastic member 80 drives the screw 101 and the nut 102 to reset.

[0089] Specifically, the first elastic member 80 is a straight tube spring or rubber.

[0090] In the embodiment of the utility model, the first connection hole 104 and the second connection hole 105 are both polygonal holes, the part where the output end of the driving unit 20 is plugged into the first connection hole 104 is a polygonal shaft, and the part where the rotating member 50 is plugged into the second connection hole 105 is a polygonal shaft.

[0091] That is, the radial cross-section of the part where the output end of the driving unit 20 is plugged into the first connecting hole 104 is a polygon, and the radial cross-section of the part where the rotating member 50 is plugged into the second connecting hole 105 is a polygon; in this way, through the cooperation of the polygonal hole and the polygonal axis, the output end of the driving unit 20 can drive the screw 101 to rotate, and the screw 101 can also move axially relative to the output end of the driving unit 20, the rotating member 50 can rotate with the screw 101, the rotating member 50 can also drive the screw 101 to rotate, and the screw 101 can also move axially relative to the rotating member 50.

[0092] Specifically, when the drive unit 20 stops working due to power failure or fault, the rotating part 50 can be rotated to drive the screw 101 to rotate, so that the rotating part 50 can be used as an emergency key to achieve emergency. The rotating part 50 is provided with a matching position for matching with the emergency handle, and the matching position can be a slot or a protrusion.

[0093] More specifically, in order to make the rotation of the rotating member 50 and the screw 101 smoother, a bearing 90 is arranged between the rotating member 50 and the support seat 30. The bearing 90 can be a ball bearing. The ball bearing includes a movable inner ring, balls and a fixed outer ring. The fixed outer ring is fixedly connected to the fixed seat 100, and the movable inner ring is fixedly connected to the rotating member 50.

[0094] Compared with the prior art in which the spring is arranged outside the transmission worm and directly connected to the buffer plane bearing 90, the utility model arranges the bearing 90 between the rotating part 50 and the support seat 30. When the nut 102 is subjected to an external impact force in the first direction, the impact force will not be transmitted to the bearing 90, thereby extending the service life of the bearing 90.

[0095] Continue reading Figure 10-11 In the embodiment of the utility model, the support seat 30 includes a first seat body 301 and a first screw sleeve 302 . The first screw sleeve 302 is embedded in the first seat body 301 , and the first screw sleeve 302 is sleeved outside the end of one end of the screw 101 .

[0096] Preferably, the first limiting portion 70 is disposed on the first screw sleeve 302 of the support seat 30, so that the overall structure is more compact.

[0097] It should be noted that the support seat 30 can be made in one piece, but the support seat 30 is made of a first seat body 301 and a first screw sleeve 302 separately and connected by screw connection or welding process, which can reduce the processing complexity of the support seat 30.

[0098] In an embodiment of the utility model, the buffer parking lock movement also includes a fixed seat 100, which is sleeved on the outside of the connection position between the screw 101 and the driving unit 20; the fixed seat 100 and one end of the screw 101 have a second buffer gap in the axial direction; when the nut 102 is subjected to an external impact force in the second direction, the nut 102 drives the screw 101 to move relative to the fixed seat 100 along the linear track 103 in the second buffer gap.

[0099] Based on the above structure, the rotating member 50 is inserted into the second connecting hole 105, and the support seat 30 is supported on the outside of the screw 101. The rotating member 50, the screw 101 and the support seat 30 form a three-layer structure that is nested with each other; the output end of the driving unit 20 is inserted into the first connecting hole 104, and the fixed seat 100 is supported on the outside of the screw 101. The output end of the driving unit 20, the screw 101 and the fixed seat 100 form a three-layer structure that is nested with each other; the above structure supports and protects both ends of the screw 101.

[0100] In an embodiment of the utility model, a third shoulder 110 is provided on the output end of the driving unit 20, a fourth shoulder 107 is provided at the end of the screw 101 close to the driving unit 20, and a second limiting portion 120 is provided on the fixed seat 100; the end of the screw 101 close to the driving unit 20 is axially spaced apart from the third shoulder 110 by a third distance, the second limiting portion 120 is spaced apart from the fourth shoulder 107 by a fourth distance, and the fourth distance is smaller than the third distance.

[0101] Based on the above structure, the buffer parking lock mechanism of the utility model is provided with a first elastic member 80, and the end of the screw 101 close to the rotating member 50 is axially spaced apart from the first shoulder 60 at a first distance, and the first limiting portion 70 is spaced apart from the second shoulder 106 at a second distance, and the second distance is smaller than the first distance, so that when the nut 102 is subjected to an external impact force in the first direction, the nut 102 and the screw 101 transmit the impact force to the support seat 30, thereby preventing the impact force from being transmitted to the rotating member 50 and causing deformation and damage thereof.

[0102] In an embodiment of the utility model, the buffer parking lock movement also includes a second elastic member, which is arranged in the first connecting hole 104, and one axial end of the second elastic member abuts against the screw 101, and the other axial end of the second elastic member abuts against the output end of the drive unit 20; when the nut 102 is subjected to an external impact force in the second direction, the nut 102 drives the screw 101 to move along the linear track 103 toward the direction close to the drive unit 20 and squeezes the second elastic member; when the external impact force in the second direction applied to the nut 102 disappears, the second elastic member drives the screw 101 and the nut 102 to reset.

[0103] Specifically, the second elastic member is a straight tube spring or rubber.

[0104] Preferably, the first elastic member 80 and the second elastic member have the same structure and are symmetrically arranged. Of course, in some application scenarios, the first elastic member 80 and the second elastic member can have different structures and be asymmetrically arranged so as to achieve buffering.

[0105] Based on the above structure, the buffer parking lock movement of the utility model is provided with a first elastic member 80 and a second elastic member. The end of the screw 101 close to the rotating member 50 is axially spaced apart from the first shoulder 60 at a first spacing, the first limiting portion 70 is spaced apart from the second shoulder 106 at a second spacing, and the second spacing is smaller than the first spacing, so that when the nut 102 is subjected to an external impact force in the first direction, the nut 102 and the screw 101 transmit the impact force to the support seat 30, thereby preventing the impact force from being transmitted to the rotating member 50 and causing deformation and damage thereof; the end of the screw 101 close to the drive unit 20 is axially spaced apart from the third shoulder 110 at a third spacing, the second limiting portion 120 is spaced apart from the fourth shoulder 107 at a fourth spacing, and the fourth spacing is smaller than the third spacing, so that when the nut 102 is subjected to an external impact force in the second direction, the nut 102 and the screw 101 transmit the impact force to the support seat 30, thereby preventing the impact force from being transmitted to the output end of the drive unit 20 and causing deformation and damage thereof.

[0106] It should be noted that Figure 1-Figure 22 This is an embodiment in which only the first elastic member 80 is provided.

[0107] Based on the above structure, the buffer parking lock movement of the utility model sets the first elastic member 80 in the second connecting hole 105. In the case where a second elastic member is set, the second elastic member is set in the first connecting hole 104. In this way, the first elastic member 80 and the second elastic member are set inside the screw 101, avoiding the first elastic member 80 and the second elastic member from occupying the external space of the screw 101, ensuring the effective length of the screw 101, and facilitating the miniaturization design of the parking lock movement.

[0108] In the embodiment of the utility model, the fixing seat 100 includes a second seat body 1001 and a second screw sleeve 1002 . The second screw sleeve 1002 is nested in the second seat body 1001 , and the second screw sleeve 1002 is sleeved on the end of the other end of the screw 101 .

[0109] Preferably, the second limiting portion 120 is disposed on the second screw sleeve 1002 of the support seat 30, so that the overall structure is more compact.

[0110] It should be noted that the fixing seat 100 can be made in one piece, but the fixing seat 100 is made of the second seat body 1001 and the second screw sleeve 1002 separately and connected by screw connection or welding process, which can reduce the processing complexity of the support seat 30.

[0111] In the embodiment of the utility model, a connecting protrusion 108 is provided on the side of the nut 102 , and the nut 102 is slidably connected to the linear track 103 via the connecting protrusion 108 .

[0112] Specifically, linear tracks 103 are provided on both radial sides of the nut 102, and connecting protrusions 108 are provided on both radial sides of the nut 102. Each linear track 103 corresponds to a connecting protrusion 108. The two linear tracks 103 are used to limit and guide the nut 102, thereby improving the balance and stability of the nut 102 moving along the screw rod 101.

[0113] Taking the case where only the first elastic member 80 is provided as an example, the specific movement process of the nut 102 when subjected to external impact force is as follows:

[0114] When the nut 102 is not subjected to external impact force, under the action of the first elastic member 80, the screw 101 abuts against the fixed seat 100, specifically, the fourth shoulder 107 on the screw 101 abuts against the second limiting portion 120 of the fixed seat 100, the fourth spacing and the second buffer gap are both 0, the second spacing constitutes the first buffer gap, and at this time, the second spacing and the first buffer gap are both maximum values.

[0115] When the nut 102 is subjected to an external impact force in the first direction, the nut 102 drives the screw 101 to move along the linear track 103 toward the rotating member 50 and squeezes the first elastic member 80. During this process, the first spacing, the second spacing and the first buffer gap are all reduced, and the third spacing, the fourth spacing and the second buffer gap are all increased until the second spacing and the first buffer gap are both equal to 0, and the fourth spacing and the second buffer gap are both maximum values, and the second shoulder 106 on the screw 101 impacts the first limit portion 70 on the support seat 30.

[0116] When the external impact force in the first direction applied to the nut 102 disappears, the first elastic member 80 is reset. Under the action of the first elastic member 80, the nut 102 drives the screw rod 101 to move along the linear track 103 toward the output end of the drive unit 20. During this process, the first spacing, the second spacing and the first buffer gap all increase, and the third spacing, the fourth spacing and the second buffer gap all decrease, until the second spacing and the first buffer gap are both maximum values, the fourth spacing and the second buffer gap are both 0, and the fourth shoulder 107 on the screw rod 101 impacts the second limit portion 120 on the fixing seat 100.

[0117] Taking the case where the first elastic member 80 and the second elastic member are provided at the same time as an example, the first elastic member 80 and the second elastic member have the same structure and are symmetrically provided. The specific movement process of the nut 102 when subjected to external impact force is as follows:

[0118] When the nut 102 is not subjected to external impact force, under the joint action of the first elastic member 80 and the second elastic member, the screw 101 is set between the fixed seat 100 and the support seat 30, the second spacing constitutes the first buffer gap, the fourth spacing constitutes the second buffer gap, and the first buffer gap is equal to the second buffer gap.

[0119] When the nut 102 is subjected to an external impact force in the first direction, the nut 102 drives the screw 101 to move along the linear track 103 toward the rotating member 50, and squeezes the first elastic member 80 and stretches the second elastic member. During this process, the first spacing, the second spacing and the first buffer gap are all reduced, and the third spacing, the fourth spacing and the second buffer gap are all increased, until the second spacing and the first buffer gap are both equal to 0, and the fourth spacing and the second buffer gap are both maximum values, and the second shoulder 106 on the screw 101 impacts the first limit portion 70 on the support seat 30.

[0120] When the external impact force in the first direction applied to the nut 102 disappears, the first elastic member 80 and the second elastic member are both reset. Under the joint action of the first elastic member 80 and the second elastic member, the nut 102 drives the screw rod 101 to move along the linear track 103 toward the output end of the drive unit 20. During this process, the first spacing, the second spacing and the first buffer gap all increase, and the third spacing, the fourth spacing and the second buffer gap all decrease until the first buffer gap is equal to the second buffer gap.

[0121] When the nut 102 is subjected to an external impact force in the second direction, the nut 102 drives the screw 101 to move along the linear track 103 toward the output end of the driving unit, and squeezes the second elastic member and stretches the first elastic member 80. During this process, the first spacing, the second spacing and the first buffer gap all increase, and the third spacing, the fourth spacing and the second buffer gap all decrease, until the second spacing and the first buffer gap are both maximum values, and the fourth spacing and the second buffer gap are both equal to 0, and the fourth shoulder 107 on the screw 101 impacts the second limit portion 120 on the fixing seat 100.

[0122] When the external impact force in the second direction on the nut 102 disappears, the first elastic member 80 and the second elastic member are both reset. Under the joint action of the first elastic member 80 and the second elastic member, the nut 102 drives the screw rod 101 to move along the linear track 103 toward the rotating member 50. During this process, the first spacing, the second spacing and the first buffer gap are all reduced, and the third spacing, the fourth spacing and the second buffer gap are all increased until the first buffer gap is equal to the second buffer gap.

[0123] It should be noted that the first direction may be the front direction of the nut 102 , and the second direction may be the rear direction of the nut 102 .

[0124] Specifically, see Figure 10-11 The first direction is the direction for driving the nut 102 to move to the left along the screw rod 101, that is, the first direction is the direction for driving the nut 102 to move along the screw rod 101 towards the rotating member 50; the second direction is the direction for driving the nut 102 to move to the right along the screw rod 101, that is, the third direction is the direction for driving the nut 102 to move along the screw rod 101 towards the driving unit 20.

[0125] See also Figure 1-Figure 22 The utility model discloses a parking lock, including any one of the above-mentioned buffer parking lock movements, and also includes a connecting arm 130 and a stopper 140, one end of the connecting arm 130 is rotatably connected to the nut 102, and the other end of the connecting arm 130 is rotatably connected to the stopper 140; when the driving unit 20 drives the screw rod 101 to move, the screw rod 101 drives the nut 102 to move along the linear track 103, and the nut 102 drives the stopper 140 to flip through the connecting arm 130 to open or close the stopper 140; when the stopper 140 is in the open state and is subjected to an external impact force in the first direction, the stopper 140 drives the nut 102 to move through the connecting arm 130, and at the same time, the nut 102 drives the screw rod 101 to move relative to the support seat 30 along the linear track 103 in the first buffer gap.

[0126] The parking lock of the utility model adopts the above-mentioned buffer parking lock movement, the linear track 103 and the connecting arm 130 are independently arranged, the linear track 103 and the nut 102 are slidably connected, the driving unit 20 drives the nut 102 to move along the linear track 103 through the screw 101, thereby driving the connecting arm 130 to move, while realizing the movement of the connecting arm 130, ensuring the strength of the connecting arm 130 and the stability of the transmission; when the driving unit 20 drives the screw 101 to move, the screw 101 drives the nut 102 to move along the linear track 103, and the nut 102 is connected to the connecting arm 130 through the connecting arm 130. Drive the blocking member 140 to flip over to open or close the blocking member 140; when the blocking member 140 is in the open state and is subjected to an external impact force in the first direction, the blocking member 140 drives the nut 102 to move through the connecting arm 130, and at the same time, the nut 102 drives the screw 101 to move along the linear track 103 relative to the support seat 30 within the first buffer gap; the overall structure has stable movement, so that the first buffer gap is used to buffer and protect the blocking member 140, the connecting arm 130, the nut 102, the screw 101 and the driving unit 20, thereby reducing their deformation and damage when subjected to external impact force.

[0127] Specifically, the blocking member 140 is in the shape of a plate, sheet or frame, depending on the actual application scenario, and is not limited to a specific shape so as to be able to block the wheels of the vehicle.

[0128] See also Figure 15-19In an embodiment of the utility model, the parking lock also includes a connecting seat 150, the blocker 140 is rotatably connected to the connecting seat 150 through a main shaft 160, the connecting arm 130 is rotatably connected to the blocker 140 through a connecting shaft 170, and the central axis of the main shaft 160 and the central axis of the connecting shaft 170 are offset from each other; when the driving unit 20 drives the screw rod 101 to move, the screw rod 101 drives the nut 102 to move along the linear track 103, and the nut 102 drives the blocker 140 to flip around the main shaft 160 through the connecting arm 130 to open or close the blocker 140.

[0129] In the parking lock of the present invention, the central axis of the main shaft 160 and the central axis of the connecting shaft 170 are offset from each other, and the screw 101, the nut 102, the linear track 103, the connecting arm 130, the connecting shaft 170, the main shaft 160 and the stopper 140 constitute a slider connecting rod mechanism, and the stopper 140 is driven to flip by cooperating with the connecting arm 130 through the movement of the nut 102. Compared with the technical solution in which the connecting arm 130 directly acts on the main shaft 160 of the same stopper 140, in this technical solution, the driving unit 20 outputs a smaller torque to drive the stopper 140 to flip, and the overall movement amplitude of the connecting arm 130 is smaller, which is conducive to the flat design of the parking lock.

[0130] Specifically, the value of the mutual offset between the central axis of the main shaft 160 and the central axis of the connecting shaft 170 is determined according to the actual application scenario, so that the driving unit 20 can easily drive the blocking member 140 to flip.

[0131] In the embodiment of the utility model, the connecting arm 130 is fixedly connected to the connecting shaft 170, and the connecting shaft 170 is rotatably connected to the stopper 140; or, the connecting arm 130 is rotatably connected to the connecting shaft 170, and the connecting shaft 170 is fixedly connected to the stopper 140.

[0132] Specifically, the connecting seat 150 is arranged below the blocker 140, and the connecting seat 150 supports the bottom of the blocker 140, and the main shaft 160 and the supporting seat 30 form a hinge structure; in this way, by controlling the number of connecting seats 150 and the installation interval, multi-point support or linear support can be formed for the bottom of the blocker 140, which not only increases the strength of the blocker 140, but also assists the blocker 140 to flip over. At the same time, it can avoid adding components beside the blocker 140, thereby ensuring the installation space of the parking lock in the axial direction of the blocker 140.

[0133] Specifically, the connecting seat 150 is fixed on the base plate 180 or directly fixed to the ground; the base plate 180 is fixed to the ground by concrete or screws, so that the parking lock is installed; in an embodiment where the base plate 180 is not used, the connecting seat 150 can be directly fixed to the ground by concrete or screws, so that the parking lock is installed; due to the provision of the connecting seat 150, there is a gap between the blocker 140 and the base plate 180 or the ground, and the gap can accommodate sand and gravel to avoid jamming.

[0134] Specifically, a first mounting hole 190 is provided on the connecting seat 150, and the main shaft 160 is rotatably connected to the connecting seat 150 through the first mounting hole 190, and the inner diameter of the first mounting hole 190 is larger than the outer diameter of the main shaft 160; the main shaft 160 is fixedly connected to the stopper 140; a second mounting hole 200 is provided on the connecting seat 150, and the first mounting hole 190 and the second mounting hole 200 are arranged perpendicular to each other, the first mounting hole 190 is arranged horizontally, and the second mounting hole 200 is arranged longitudinally; a third elastic member 210 is arranged in the second mounting hole 200, and one axial end of the third elastic member 210 abuts against the main shaft 160, and the other axial end of the third elastic member 210 abuts against the substrate 180 or the ground, or the other axial end of the third elastic member 210 is fixed to the substrate 180 or the ground, so that at least one side of the main shaft 160 abuts against the connecting seat 150, thereby realizing transmission between the main shaft 160, the connecting seat 150 and the stopper 140.

[0135] Since the inner diameter of the first mounting hole 190 is larger than the outer diameter of the main shaft 160 , there is a movable gap between the main shaft 160 and the connecting seat 150 . When the blocking member 140 is in a flat closed state, the blocking member 140 can fall and reset when a vehicle passes over the blocking member 140 .

[0136] Specifically, the third elastic member 210 is a straight tube spring or a rubber column.

[0137] The utility model provides a third elastic member 210 to elastically support the main shaft 160, installs the third elastic member 210 inside the connecting seat 150, and utilizes the second mounting hole 200 to constrain the circumference of the third elastic member 210, so that the third elastic member 210 can maintain directional expansion and contraction, thereby preventing the third elastic member 210 from tilting in its circumferential direction and failing after long-term use, thereby extending the service life of the third elastic member 210.

[0138] It should be noted that the connecting seat 150 is a rigid structure, so that the combined structure of the connecting seat 150 and the third elastic member 210 can provide rigid support for the main shaft 160. At the same time, the combined structure of the connecting seat 150 and the third elastic member 210 can provide elastic support for the main shaft 160, provide a certain buffer for the block 140, reduce the impact force of the vehicle, and extend the service life of the block 140 to a certain extent.

[0139] In this way, the parking lock of the utility model is provided with a third elastic member 210 to elastically support the block 140, and the inner diameter of the first mounting hole 190 is larger than the outer diameter of the main shaft 160. When the vehicle passes through the block 140 in a flat and closed state, the block 140 produces a falling and resetting action. This action cooperates with other detection units 220 to trigger the drive unit 20 to work. In this way, the drive unit 20 can realize the function of hibernation when no vehicle passes, avoiding the drive unit 20 from being in the on state for a long time, and further saving the power consumption of the drive unit 20.

[0140] Furthermore, the detection unit 220 may be an angle detection unit 220 or a distance sensor. How to use the detection unit 220 to detect the movement of the blocking member 140 and trigger the start and stop of the driving unit 20 is a prior art and will not be described in detail here.

[0141] See also Figure 6 , Fig.13 , Fig.19 as well as Fig. 22 In an embodiment of the utility model, the parking lock also includes a reinforcement 230, which includes a first support body 2301, a second support body 2302 and a third support body 2303 that are integrally connected; the first support body 2301 abuts against the side of the blocker 140, and a third connecting hole 2304 is provided on the first support body 2301. The connecting shaft 170 passes through the third connecting hole 2304 and is inserted into the upper part of the blocker 140, the second support body 2302 is inserted into the lower part of the blocker 140, and the third support body 2303 is buckled on the back of the blocker 140.

[0142] The parking lock of the utility model utilizes a reinforcing member 230 to strengthen the strength of the connecting shaft 170 and the stopper 140 to mitigate deformation and cracking of the connecting shaft 170 and the stopper 140 . The reinforcing member 230 strengthens the strength of the connecting shaft 170 and the stopper 140 while achieving connection between the reinforcing member 230 , the connecting shaft 170 and the stopper 140 .

[0143] Specifically, in order to improve the connection stability between the reinforcement 230 and the stopper 140, the portion where the stopper 140 connects to the reinforcement 230 is a solid structure, and corresponding assembly holes for connecting to the connecting shaft 170 and assembly holes for connecting to the second support body 2302 are made in this portion.

[0144] Specifically, the first support body 2301 is extended along the thickness direction of the block 140, and the second support body 2302 and the third support body 2303 are extended along the length direction of the block 140. In order to further strengthen the connection stability between the reinforcement 230 and the block 140, the second support body 2302, the block 140 and the third support body 2303 are penetrated along the thickness direction of the block 140 by the connecting member 2305, so as to connect the reinforcement 230 and the block 140 together, and the second support body 2302, the block 140 and the third support body 2303 are provided with assembly holes for connecting with the connecting member 2305.

[0145] It should be noted that the reinforcement 230 provides wrapping support for the side surfaces of the baffle 140 and the back surface of the baffle 140, and this method has a better supporting and reinforcing effect on the baffle 140; and this method can embed the reinforcement 230 into the baffle 140 so that the outer surface of the reinforcement 230 is flush with the outer surface of the baffle 140, thereby preventing the baffle 140 from protruding from the outer surface of the baffle 140, thereby protecting the reinforcement 230.

[0146] The specific use process of the utility model is as follows:

[0147] In the initial state, the blocking member 140 is in a flat and closed state, and the vehicle can pass through the parking lock. At this time, the vehicle can enter and exit the parking space freely.

[0148] The driving unit 20 works in the forward direction, and drives the blocking member 140 to flip forward around the main axis 160 through the transmission mechanism 10, the connecting arm 130, and the connecting shaft 170. The blocking member 140 flips to an upright open state, and the blocking member 140 blocks the vehicle, thereby preventing the vehicle from freely entering and exiting the parking space.

[0149] The driving unit 20 works in reverse, and drives the blocking member 140 to flip in reverse around the main axis 160 through the transmission mechanism 10, the connecting arm 130, and the connecting shaft 170. The blocking member 140 flips to a flat closed state, and the vehicle can pass through the parking space lock. At this time, the vehicle can enter and exit the parking space freely.

[0150] It should be noted that when the parking lock adopts the above-mentioned buffer parking lock movement, when the blocker 140 is in an upright and open state, the vehicle may impact the blocker 140 from the front or from the back of the blocker 140 in some cases, thereby realizing entering and exiting the parking space; when the vehicle impacts the blocker 140 from the front, it can be considered that the blocker 140 is subjected to an external impact force in a first direction, and the connecting arm 130 transfers the impact force to the nut 102, so that the nut 102 is subjected to an external impact force in the first direction; when the vehicle impacts the blocker 140 from the back of the blocker 140, it can be considered that the blocker 140 is subjected to an external impact force in a second direction, and the connecting arm 130 transfers the impact force to the nut 102, so that the nut 102 is subjected to an external impact force in the second direction.

[0151] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A buffer parking lock movement, characterized in that: include: A transmission mechanism, the transmission mechanism comprising a screw, a nut threadedly connected to the screw, and a linear track slidably connected to the nut; A driving unit, wherein an output end of the driving unit is drivingly connected to one end of the screw; A support seat, the support seat is drivingly connected to the other end of the screw rod, and a first buffer gap is formed between the support seat and the other end of the screw rod in the axial direction; a movement cover, in which at least one of the transmission mechanism, the drive unit and the support seat is arranged; When the driving unit drives the screw to rotate, the screw drives the nut to move along the linear track; When the nut is subjected to an external impact force in a first direction, the nut drives the screw rod to move relative to the support seat along the linear track within the first buffer gap.

2. The buffer parking lock mechanism according to claim 1, characterized in that: One end of the screw is nested with the output end of the drive unit, a rotating member is arranged between the other end of the screw and the support seat, and the rotating member is nested with the other end of the screw; When the driving unit drives the screw to rotate, the screw drives the nut to move along the linear track and drives the rotating member to rotate at the same time; When the nut is subjected to an external impact force in a first direction, the nut drives the screw rod to move relative to the support seat and the rotating member along the linear track in the first buffer gap.

3. The buffer parking lock mechanism according to claim 2, characterized in that: A first connecting hole and a second connecting hole are respectively provided at two axial ends of the screw rod, one axial end of the screw rod is plugged into the output end of the driving unit through the first connecting hole, and the other axial end of the screw rod is plugged into the rotating member through the second connecting hole; The rotating member is provided with a first shaft shoulder, the end of the screw rod close to the support seat is provided with a second shaft shoulder, and the support seat is provided with a first limiting portion; The end of the screw rod close to the rotating member is axially spaced apart from the first shoulder by a first distance, the first limiting portion is spaced apart from the second shoulder by a second distance, and the second distance is smaller than the first distance.

4. The buffer parking lock mechanism according to claim 3, characterized in that: It also includes a first elastic member, which is disposed in the second connecting hole, and one axial end of the first elastic member abuts against the screw rod, and the other axial end of the first elastic member abuts against the rotating member; When the nut is subjected to an external impact force in a first direction, the nut drives the screw rod to move along the linear track toward the rotating member and squeezes the first elastic member; When the external impact force in the first direction on the nut disappears, the first elastic member drives the screw rod and the nut to reset.

5. The buffer parking lock mechanism according to claim 4, characterized in that: The first connection hole and the second connection hole are both polygonal holes, the part of the output end of the driving unit plugged into the first connection hole is a polygonal shaft, and the part of the rotating member plugged into the second connection hole is a polygonal shaft.

6. The buffer parking lock mechanism according to claim 1, characterized in that: The support seat comprises a first seat body and a first screw sleeve, wherein the first screw sleeve is embedded in the first seat body and sleeved outside the end of one end of the screw.

7. The buffer parking lock mechanism according to claim 5, characterized in that: It also includes a fixing seat, which is sleeved outside the connection position between the screw rod and the driving unit; A second buffer gap is formed between the fixing seat and one end of the screw rod in the axial direction; When the nut is subjected to an external impact force in the second direction, the nut drives the screw rod to move relative to the fixing seat along the linear track in the second buffer gap.

8. The buffer parking lock mechanism according to claim 7, characterized in that: A third shoulder is provided on the output end of the driving unit, a fourth shoulder is provided on the end of the screw rod close to the driving unit, and a second limiting portion is provided on the fixing seat; The end of the screw rod close to the driving unit is axially spaced apart from the third shoulder by a third distance, the second limiting portion is spaced apart from the fourth shoulder by a fourth distance, and the fourth distance is smaller than the third distance.

9. The buffer parking lock mechanism according to claim 8, characterized in that: It also includes a second elastic member, which is disposed in the first connecting hole, and one axial end of the second elastic member abuts against the screw rod, and the other axial end of the second elastic member abuts against the output end of the driving unit; When the nut is subjected to an external impact force in the second direction, the nut drives the screw rod to move along the linear track toward the driving unit and squeezes the second elastic member; When the external impact force in the second direction on the nut disappears, the second elastic member drives the screw rod and the nut to reset.

10. The buffer parking lock mechanism according to claim 7, characterized in that: The fixing seat comprises a second seat body and a second screw sleeve, wherein the second screw sleeve is nested in the second seat body, and the second screw sleeve is sleeved on the end of the other end of the screw.

11. A parking lock, characterized in that: The buffer parking lock mechanism comprises the buffer parking lock mechanism according to any one of claims 1 to 10, and further comprises a connecting arm and a stopper, wherein one end of the connecting arm is rotatably connected to the nut, and the other end of the connecting arm is rotatably connected to the stopper; When the driving unit drives the screw to move, the screw drives the nut to move along the linear track, and the nut drives the stopper to flip through the connecting arm to open or close the stopper; When the blocking member is in an open state and is subjected to an external impact force in a first direction, the blocking member drives the nut to move via the connecting arm, and the nut drives the screw rod to move relative to the support seat along the linear track within the first buffer gap.

12. The parking lock according to claim 11, characterized in that: It also includes a connecting seat, the stopper is rotatably connected to the connecting seat via a main shaft, the connecting arm is rotatably connected to the stopper via a connecting shaft, and the central axis of the main shaft and the central axis of the connecting shaft are offset from each other; When the driving unit drives the screw to move, the screw drives the nut to move along the linear track, and the nut drives the blocking member to flip around the main shaft through the connecting arm to open or close the blocking member.

13. The parking lock according to claim 12, characterized in that: The connecting arm is fixedly connected to the connecting shaft, and the connecting shaft is rotatably connected to the stopper; Alternatively, the connecting arm is rotatably connected to the connecting shaft, and the connecting shaft is fixedly connected to the stopper.

14. The parking lock according to claim 12, characterized in that: Also included is a reinforcement member, the reinforcement member including a first support body, a second support body and a third support body connected in one piece; The first support body abuts against the side surface of the stopper, and a third connecting hole is provided on the first support body. The connecting shaft passes through the third connecting hole and is inserted into the upper part of the stopper, the second support body is inserted into the lower part of the stopper, and the third support body is buckled on the back side of the stopper.

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