Self-protection type parking spot lock
By configuring the buffer assembly at the connection between the drive shaft and the lock rod of the parking space lock, the design of the occlusion groove and spring is used to solve the problem of insufficient anti-collision function of the existing parking space lock, and the buffering and damping rotation when subjected to external force is achieved to ensure that The stability and safety of parking space locks.
Patent Information
- Application Number
- CN202411574935.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing parking space locks have insufficient anti-collision function, which can easily lead to damage to the vehicle and damage to the parking space lock itself. At the same time, the existing collision avoidance mechanism does not have anti-collision function during the lifting of the lock arm, which poses safety hazards.
A self-protected parking space lock is designed, and by configuring a buffer assembly at the connection between the drive shaft and the lock rod, the convex and concave fitting of the first and second occlusion sleeves and the elastic support of the spring can be achieved. The buffering and damping rotation during external forces prevent the load from directly acting on the drive shaft and the motor shaft.
Effectively avoids damage to the internal drive and transmission structure when the lock lever is subjected to external force, and at the same time reduces the load on the drive shaft, ensuring the stability and durability of the parking space lock, and has anti-collision function during the lifting of the lock arm, which improves the Security.
Smart Images
Figure CN119434154A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of parking locks, and in particular to a self-protection parking lock. Background Art
[0002] As urban traffic becomes increasingly congested, parking difficulties have become an urgent problem to be solved. The surge in the number of private cars has not only increased urban traffic pressure, but also brought many inconveniences to car owners. To solve this problem, parking lock technology came into being, effectively improving the utilization rate of parking spaces and the management efficiency of parking lots.
[0003] However, traditional mechanical parking locks have obvious deficiencies in anti-collision functions. When these parking locks are hit by a vehicle, due to the lack of a buffer mechanism, the barrier arm and the vehicle are in hard contact, which can easily cause damage to the vehicle and may also cause damage to the parking lock itself. This design not only increases the maintenance cost of the car owner, but also shortens the service life of the parking lock.
[0004] In addition, some existing parking locks with anti-collision functions still have limitations in the anti-collision mechanism. These parking locks can usually only realize the anti-collision function after the lock arm is completely locked and raised, by detecting the position deviation of the lock arm through a photoelectric sensor. However, during the process of the lock arm rising, if a vehicle enters the parking space by mistake, the motor will continue to execute the command to drive the lock arm to rise. At this time, the parking lock does not have the anti-collision function. This design has safety hazards in actual application, especially in places with difficult management such as roadside parking lots. It often happens that the previous car has just left and the next car enters the parking space while the parking lock is rising. It is easy to cause the parking lock arm to scratch the chassis of the following car, causing unnecessary losses to the car owner.
[0005] In summary, the inadequacy of the anti-collision function of existing parking locks has become a key factor restricting their further development. Therefore, developing a parking lock with efficient anti-collision function is of great significance to improving the level of urban traffic management and protecting the interests of car owners. Summary of the invention
[0006] In view of this, the purpose of the present invention is to provide a self-protection parking lock, which effectively solves the problem that the existing parking lock has a simple anti-collision structure and will directly transfer the load to the drive shaft after being hit. The drive shaft is easily damaged by the load and may even affect the drive motor shaft, causing the equipment to be easily damaged after being hit.
[0007] To achieve the above object, the technical solution adopted by the present invention is: a self-protection parking lock, comprising a lock rod, a lock body, a drive assembly, a drive shaft and a buffer assembly; the drive assembly drives the drive shaft to rotate, and the two ends of the drive shaft are connected to the lock rod through the buffer assembly, so that the lock rod swings on the lock body; The buffer assembly includes a first bite sleeve, a second bite sleeve, a spline sleeve, a first spring seat, a second spring seat and a spring; the first bite sleeve is fixedly sleeved on the drive shaft, the second bite sleeve is slidably sleeved on the drive shaft, and the matching surfaces of the first bite sleeve and the second bite sleeve are convex and concave matching bite grooves; the first spring seat is slidably sleeved on the drive shaft and abuts against the outer end surface of the second bite sleeve; the second spring seat is fixed to the outside of the drive shaft and forms a spring installation area relative to the first spring seat; the spring is sleeved in the spring installation area, so that the first spring seat can apply abutting force to the second bite sleeve, providing elastic support for the engagement of the first bite sleeve and the second bite sleeve; The outer side of the second engaging sleeve is provided with a spline, and the spline rotating sleeve is mounted on the outer side of the second engaging sleeve via the spline sleeve, so that when the second engaging sleeve rotates, the spline rotating sleeve can be driven to rotate, and the second engaging sleeve can slide relative to the spline rotating sleeve; The spline rotating sleeve and the driving shaft are both rotatably arranged in the lock body, and the locking rod is fixed on the outer side of the spline rotating sleeve.
[0008] Furthermore, the spline sleeve and the drive shaft are rotatably arranged in an assembly seat, and the assembly seat is fixed in the lock body.
[0009] Furthermore, external threads are provided on the outer sides of both ends of the spline sleeve, the spline sleeve is rotatably sleeved in the assembly seat, and is limited by limit seats assembled on both ends of the spline sleeve, a center hole is provided in the middle of the limit seat, the drive shaft is rotatably sleeved in the center hole, and its end portion is rotatably arranged in the assembly seat.
[0010] Furthermore, the first spring seat and the second spring seat each include a seat body and a sleeve body, the seat body is fixed with a sleeve body, wherein the spring is sleeved on the sleeve body and rests against the seat body.
[0011] Furthermore, the engagement groove includes arc segments and transition segments that are alternately arranged; the transition segments are inclined surfaces.
[0012] Furthermore, a positioning groove is provided on the first spring seat, and a positioning block is provided on the driving shaft. The positioning block is fitted in the positioning groove so that the first spring seat can slide axially along the driving shaft.
[0013] Furthermore, a positioning groove is provided on the first spring seat, which is rotatably arranged in the fixed sleeve at the end of the driving shaft, a positioning block is provided on the outer side of the fixed sleeve, the positioning block is adapted in the positioning groove, the first spring seat is slidably sleeved outside the fixed sleeve, the second spring seat is fixedly sleeved outside the fixed sleeve, and the fixed sleeve is fixed in the lock body.
[0014] Furthermore, an avoidance groove is provided at the outer end of the second engaging sleeve, and the avoidance groove is adapted and corresponds to the fixed sleeve. When the second engaging sleeve compresses the spring, the fixed sleeve enters the avoidance groove.
[0015] Furthermore, it also includes a friction portion, which is arranged between the fixing sleeve and the avoidance groove.
[0016] Furthermore, the driving assembly includes a driving motor and a gear box, the gear box has two input shafts and two output shafts in the same direction, and the two output shafts are respectively connected to the driving shafts on both sides.
[0017] The beneficial effect of the above technical solution is: for the motor-driven parking lock structure, in order to prevent the locking rod from being damaged when subjected to external force or applying rotational force to the motor shaft, thereby affecting the life of the parking lock, or from making hard contact with external loads such as a vehicle, causing damage to the vehicle or the parking lock, the present invention arranges a buffer assembly at the connection between the drive shaft and the locking rod. The buffer assembly can be used to make the locking rod swing with the drive of the motor. At the same time, in the deployed state, when encountering excessive external force load, the locking rod can retract in a buffering manner. At the same time, with the help of the buffer assembly, the force generated by the swinging of the locking rod can be prevented from acting on the drive shaft to a large extent, thereby reducing the load on the drive shaft and preventing the locking rod from damaging the internal drive and transmission structure due to external force.
[0018] In terms of the specific buffer structure, the structure utilizes a first interlocking sleeve and a second interlocking sleeve that interlock with each other, wherein the first interlocking sleeve is fixed on the drive shaft and always rotates with the drive shaft, and the second interlocking sleeve is slidably mounted on the drive shaft and uses a spring at the rear end to press against the first interlocking sleeve, that is, the elasticity is used to make the first interlocking sleeve and the second interlocking sleeve be in a docking state, and the second interlocking sleeve is connected to the spline rotating sleeve through a spline, and the spline rotating sleeve accepts the rotation of the locking rod, and then when the first interlocking sleeve is fixed, the second interlocking sleeve is rotated relative to the first interlocking sleeve, and when driven in rotation, the second interlocking sleeve slides backward, thereby compressing the spring, so that the second interlocking sleeve can rotate relative to the first interlocking sleeve in a damping manner, thereby preventing the locking rod from directly transferring the load to the first interlocking sleeve and the drive shaft when subjected to excessive external force.
[0019] In a further embodiment, the present invention utilizes a contact surface to establish a friction fit between the second engaging sleeve and a second spring seat in a non-rotating and sliding state, and utilizes the friction surface to further offset the rotational load, thereby increasing the ability to resist the load as the second engaging sleeve slides and swings.
[0020] Therefore, the present invention provides a self-protection device for the parking lock. Through the design of the buffer component, it effectively prevents the lock rod from damaging the internal drive and transmission structure when subjected to external force, and at the same time can reduce the load on the drive shaft, thereby ensuring the stability and durability of the parking lock. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the implementation structure of the present invention; Figure 2 It is a schematic diagram of the implementation structure of the buffer assembly of the present invention; Figure 3 This is a schematic diagram of the main structure of the buffer component; Figure 4 It is a schematic diagram of the implementation structure of the first occlusal sleeve and the second occlusal sleeve; Figure 5 for Figure 4 Schematic diagram of the main structure; Figure 6 It is a partial structural schematic diagram of the buffer component; Figure 7 for Figure 6 Schematic diagram of the main structure; Figure 8 is a schematic diagram of the internal structure of the buffer component; Fig. 9 This is a schematic diagram of the implementation structure of Example 3; Fig.10 It is a schematic diagram of the implementation structure of the assembly seat; Fig.11 for Fig.10 Schematic diagram of the main structure.
[0022] Figure markings: 1-lock body, 2-lock rod, 3-groove, 4-gear box, 5-drive shaft, 6-first bite sleeve, 7-second bite sleeve, 8-bite groove, 9-first spring seat, 10-second spring seat, 101-seat body, 102-sleeve body, 11-spring, 12-positioning groove, 13-positioning block, 14-spline, 15-spline swivel sleeve, 16-external thread, 17-limit seat, 18-fixing sleeve, 19-avoidance groove, 20-assembly seat. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Embodiment 1, this embodiment aims to provide a self-protection parking lock, which is mainly used for parking locks. In view of the current parking lock structure, in order to avoid damage to the internal transmission components and power components due to excessive impact, the prior art provides a parking lock anti-collision structure, such as configuring a flexible spring in the middle of the lock rod, or using a sensor to receive a signal. However, this parking lock anti-collision structure is simple, and after receiving an impact, the load will be directly transferred to the drive shaft, which is easily damaged by the load, and even affects the drive motor shaft, resulting in the problem that the device is easily damaged after being impacted. Based on this, in order to protect the parking lock, this embodiment provides a self-protection parking lock.
[0024] Specifically, this embodiment provides a self-protection parking lock, including a lock rod 2, a lock body 1, a drive assembly, a drive shaft 5 and a buffer assembly; Figure 1As shown in the figure, the lock body 1 is a square structure, and a groove 3 is provided on it. The groove 3 structure facilitates the lock rod 2 to enter the groove in the folded state. The lock rod 2 has two roots in structure, and the middle area is connected. Some logos, cameras, QR codes or distance sensors are provided in the middle of the lock rod 2 as needed. When fixed, the lock body 1 can be fixed to the ground by bolts.
[0025] In this embodiment, the driving component drives the driving shaft 5 to rotate, and the two ends of the driving shaft 5 are connected to the locking rod 2 through the buffer component, so that the locking rod 2 swings on the lock body 1; the specific driving component includes a driving motor and a gear box 4, the gear box 4 has two input shafts and two output shafts in the same direction, and the two output shafts are respectively connected to the driving shaft 5 on both sides. During implementation, the gear box 4 has an input shaft and is connected to the driving motor. The gear box 4 has a worm gear structure inside, and after multiple sets of gear reduction, it is transmitted to a large gear. The rotating shaft of the large gear extends two rotating shafts to both sides, and the two rotating shafts are respectively connected to the driving shaft 5 on both sides through a coupling, thereby realizing the synchronous swing of the locking rod 2.
[0026] In a specific structure, such as Figure 2-3 As shown in the figure, the buffer assembly includes a first bite sleeve 6, a second bite sleeve 7, a spline sleeve 15, a first spring seat 9, a second spring seat 10 and a spring 11; wherein the first bite sleeve 6 is fixedly sleeved on the drive shaft 5, and the second bite sleeve 7 is slidably sleeved on the drive shaft 5, the two bite sleeves are arranged relatively to each other, and the mating surfaces of the first bite sleeve 6 and the second bite sleeve 7 are convex and concave matching bite grooves 8; the bite groove 8 can be a wavy arc groove structure in structure, and the arc grooves on both sides are butt-jointed. Under normal conditions, the two bite together and can transmit power.
[0027] As another embodiment, the engagement groove 8 includes arc segments and transition segments that are alternately arranged; the transition segment is an inclined surface, and the primary buffer length can be appropriately changed through the inclined surface structure.
[0028] The first spring seat 9 is slidably mounted on the drive shaft 5 and abuts against the outer end surface of the second engaging sleeve 7; the second spring seat 10 is fixed to the outside of the drive shaft 5 and forms a spring installation area relative to the first spring seat 9; during implementation, the second engaging sleeve 7 abuts against the first spring seat 9. In order to prevent the first spring seat 9 from twisting during swinging, thereby transmitting the torsion force to the spring 11, a positioning block 13 is configured in the active area of the first spring seat 9 in this embodiment. The positioning block 13 protrudes from the drive shaft 5 and drives the first spring seat 9 to rotate together when rotating. A positioning groove 12 is provided on the first spring seat 9, and a positioning block 13 is provided on the drive shaft 5. The positioning block 3 is adapted in the positioning groove 12 to make the first spring seat 9 slide axially along the drive shaft 5.
[0029] The spring 11 is sleeved in the spring installation area, so that the first spring seat 9 can apply a supporting force to the second engaging sleeve 7, providing elastic support for the engagement of the first engaging sleeve 6 with the second engaging sleeve 7; the first spring seat 9 and the second spring seat 10 both include a seat body 101 and a sleeve body 102, and the sleeve body 102 is fixed on the seat body 101, wherein the spring 11 is sleeved on the sleeve body 102 and rests on the seat body. During implementation, the spring seat sleeve bodies on both sides are opposite, and the outer side is a seat body structure. The spring is sleeved on the seat body, and bolts are applied to the sleeve body of the second spring seat 10 to fix it on the drive shaft 5. A plurality of positioning grooves are provided on the sleeve body and the seat body of the first spring seat 9 so that the fixed spring seat can follow the rotation to avoid its distortion.
[0030] The outer side of the second engaging sleeve 7 is provided with a spline 14, and the spline sleeve 15 is mounted on the outer side of the second engaging sleeve 7 via a spline sleeve, so that when the second engaging sleeve 7 rotates, the spline sleeve 15 can be driven to rotate, and the second engaging sleeve 7 can slide relative to the spline sleeve 15. The spline sleeve 15 and the driving shaft 5 are both rotatably arranged in the lock body 1, and the lock rod 2 is fixed on the outer side of the spline sleeve 15.
[0031] When the drive shaft 5 rotates, the first interlocking sleeve 6, the second interlocking sleeve 7, the first spring seat 9 and the second spring seat 10 all rotate accordingly, that is, when the drive shaft 5 is in a rotating state, the drive shafts 5 on both sides simultaneously drive the interlocking sleeve assembly to rotate, and then the spline sleeve 15 rotates under the action of the spline, so that the locking rod 2 swings to the deployed state; in the deployed state, the drive shaft 5 stops rotating and is in a relatively fixed state under the self-locking of the gear box 4 and the drive motor. At this time, the first interlocking sleeve 6 is in a fixed state, the second interlocking sleeve 7 is connected to the spline sleeve 15 through the spline, and the locking rod 2 rotates after receiving the external force, and is centered on the spline sleeve 15. Swing, the spline sleeve 15 rotates and drives the second bite sleeve 7 to rotate, the second bite sleeve 7 rotates relative to the first bite sleeve 6, and the structure of the bite groove is used to make the second bite sleeve 7 retreat, thereby driving the first spring seat 9 backward and compressing the spring. In this process, after passing through an bite groove, the spring, the first spring seat 9 and the second bite sleeve 7 are reset. If the swinging force is continuously applied, the locking rod 2 will undergo multiple offsetting actions to overcome the force and perform a rotation action, which not only realizes the buffering function, but also ensures that when subjected to external force, the second bite shaft can rotate relative to the first bite shaft in a damping manner, thereby avoiding direct damage.
[0032] During the deployment operation: start the drive motor, which is decelerated by the gear box 4 and then transmitted to the drive shaft 5 to rotate the drive shaft 5. When the drive shaft 5 rotates, it drives the first interlocking sleeve 6 and the second interlocking sleeve 7 to rotate synchronously. Since the first interlocking sleeve 6 is fixed on the drive shaft 5 and the second interlocking sleeve 7 is slidably mounted on the drive shaft 5, the interlocking grooves between the two will engage with each other and transmit power. When the second interlocking sleeve 7 rotates, the spline rotating sleeve 15 is driven to rotate through the spline, and then the locking rod 2 is swung to the deployed state under the action of the spline rotating sleeve 15 to occupy the parking space.
[0033] Anti-collision buffering process: When the lock rod 2 is hit by external force in the unfolded state (such as a vehicle mistakenly entering a parking space), the lock rod 2 will try to rotate and swing backward. Since the second interlocking sleeve 7 is connected to the spline rotating sleeve 15 through a spline, and the second interlocking sleeve 7 can slide relative to the first interlocking sleeve 6, the rotation of the lock rod 2 will drive the second interlocking sleeve 7 to rotate relative to the first interlocking sleeve 6. During the rotation process, the second interlocking sleeve 7 will slide along the arc section and transition section of the interlocking groove, and use the elastic support of the spring to achieve buffering and damping rotation. The spring will be compressed and store energy. When the external force disappears, the spring will release energy to reset the second interlocking sleeve 7.
[0034] During folding operation: the drive motor is started in reverse to reverse the drive shaft 5, thereby driving the lock rod 2 to swing to the folded state to release the parking space. During long-term use, the wear of the buffer assembly should be checked regularly, and the seriously worn parts should be replaced in time to ensure the stability and durability of the parking lock.
[0035] This embodiment provides a self-protection parking lock, which aims to solve the problem that the existing parking lock has a simple anti-collision structure and is easily damaged by impact. The parking lock effectively avoids the external force load directly acting on the drive shaft 5 and the motor shaft by introducing a buffer component, thereby improving the durability and stability of the parking lock. The buffer component is cleverly designed, using the convex and concave matching meshing grooves of the first meshing sleeve 6 and the second meshing sleeve 7, as well as the elastic support of the spring, to achieve buffering and damping rotation when subjected to external force, effectively protecting the internal transmission components and power components of the parking lock. Embodiment 2: This embodiment further illustrates the installation structure of the buffer assembly.
[0036] In this embodiment, Fig.11 As shown in the figure, the spline sleeve 15 and the drive shaft 5 are rotatably arranged in the assembly seat 20, and the assembly seat 20 is fixed in the lock body 1. External threads are arranged on the outer sides of both ends of the spline sleeve 15, and the spline sleeve 15 is rotatably sleeved in the assembly seat and limited by the limit seats assembled on both ends of the spline sleeve 15. The middle part of the limit seat is provided with a center hole, and the drive shaft 5 is rotatably sleeved in the center hole, and its end is rotatably arranged in the assembly seat.
[0037] During implementation, the limit seat is configured on both sides of the spline sleeve 15, thereby forming a double-sided limit, wherein the limit seat on one side can limit the second engaging sleeve 7 in the spline sleeve, and the second engaging sleeve 7 is in a state of being in contact with the limit seat and at the same time engaged with the first engaging sleeve 6; the limit seat on the other side can limit the second spring seat 10 therein, so that the spline sleeve 15 can be assembled in the assembly seat to form a whole, and fixed in the lock body 1 as an integral structure.
[0038] Embodiment 3, this embodiment further illustrates the fixed position of.
[0039] A positioning groove 12 is provided on the first spring seat 9, and is rotatably arranged in a fixed sleeve 18 at the end of the driving shaft 5. A positioning block 13 is provided on the outer side of the fixed sleeve 18, and the positioning block 13 is adapted in the positioning groove 12. The first spring seat 9 is slidably sleeved outside the fixed sleeve 18, and the second spring seat 10 is fixedly sleeved outside the fixed sleeve, and the fixed sleeve 18 is fixed in the lock body 1.
[0040] The outer end of the second engaging sleeve 7 is provided with an escape groove 19 , which is adapted and corresponds to the fixing sleeve 18 . When the second engaging sleeve 7 is spring-loaded, the fixing sleeve enters the escape groove 19 .
[0041] It also includes a friction part, which is arranged between the fixing sleeve and the avoidance groove. The friction part can be a rubber component or other contact-type friction components.
[0042] During implementation, in this embodiment, the outer end portion of the drive shaft 5 is rotated and arranged in the fixed sleeve. The fixed sleeve is in a fixed state and is fixed in the lock body 1 or in the assembly seat in Example 2. The first spring seat 9, the spring and the second spring seat 10 are arranged on the fixed sleeve so that the first spring seat 9 is in a fixed state and the first spring is in a sliding state. During operation, the first spring seat 9 abuts against the end face of the second engaging sleeve 7. When the second engaging sleeve 7 rotates, the first spring seat 9 is in a limited state, and the mating surfaces of the two are smooth planes.
[0043] In this embodiment, a friction block is arranged in the avoidance groove, and as the second engaging sleeve translates outward, the fixed sleeve can enter the avoidance groove, and a friction increasing structure is formed between the end of the fixed sleeve and the friction block to improve its resistance. Therefore, this embodiment can provide a structure in which the resistance gradually increases and then decreases with the progress of the swing, and when approaching the limit position, the resistance can increase in a step-by-step manner, thereby preventing a small external force from triggering the buffer assembly and ensuring its stability in the deployed state, that is, the locking rod 2 first produces a small swing under a small force, and resets after the load disappears, and only when subjected to a large load will the locking rod 2 swing an angle, and when continuously subjected to the large load, the locking rod 2 will continuously swing at several angles until it is in a safe state.
[0044] The embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. The basic concept of the present invention is to configure a buffer assembly at the connection between the drive shaft and the lock rod. The buffer assembly can make the lock rod swing with the drive of the motor. At the same time, in the unfolded state, when encountering excessive external force load, the lock rod can retract in a buffering manner. At the same time, the buffer assembly can prevent the force generated by the lock rod swinging from acting on the drive shaft, thereby reducing the load on the drive shaft and preventing the lock rod from damaging the internal drive and transmission structure due to external force. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.
Claims
1. A self-protection parking lock, characterized in that: It includes a lock rod, a lock body, a drive assembly, a drive shaft and a buffer assembly; the drive assembly drives the drive shaft to rotate, and the two ends of the drive shaft are connected to the lock rod through the buffer assembly, so that the lock rod swings on the lock body; The buffer assembly includes a first bite sleeve, a second bite sleeve, a spline sleeve, a first spring seat, a second spring seat and a spring; the first bite sleeve is fixedly sleeved on the drive shaft, the second bite sleeve is slidably sleeved on the drive shaft, and the matching surfaces of the first bite sleeve and the second bite sleeve are convex and concave matching bite grooves; the first spring seat is slidably sleeved on the drive shaft and abuts against the outer end surface of the second bite sleeve; the second spring seat is fixed to the outside of the drive shaft and forms a spring installation area relative to the first spring seat; the spring is sleeved in the spring installation area, so that the first spring seat can apply abutting force to the second bite sleeve, providing elastic support for the engagement of the first bite sleeve and the second bite sleeve; The outer side of the second engaging sleeve is provided with a spline, and the spline rotating sleeve is mounted on the outer side of the second engaging sleeve via the spline sleeve, so that when the second engaging sleeve rotates, the spline rotating sleeve can be driven to rotate, and the second engaging sleeve can slide relative to the spline rotating sleeve; The spline rotating sleeve and the driving shaft are both rotatably arranged in the lock body, and the locking rod is fixed on the outer side of the spline rotating sleeve.
2. The self-protection parking lock according to claim 1, characterized in that: The spline rotating sleeve and the driving shaft are rotatably arranged in the assembly seat, and the assembly seat is fixed in the lock body.
3. The self-protection parking lock according to claim 2 is characterized in that: External threads are arranged on the outer sides of both ends of the spline sleeve. The spline sleeve is rotatably sleeved in the assembly seat and is limited by the limit seats assembled on both ends of the spline sleeve. A center hole is arranged in the middle of the limit seat. The drive shaft is rotatably sleeved in the center hole, and its end is rotatably arranged in the assembly seat.
4. The self-protection parking lock according to claim 1, characterized in that: The first spring seat and the second spring seat both include a seat body and a sleeve body, wherein the sleeve body is fixed on the seat body, wherein the spring is sleeved on the sleeve body and abuts against the seat body.
5. The self-protection parking lock according to claim 1, characterized in that: The engagement groove comprises arc segments and transition segments which are arranged alternately; the transition segments are inclined surfaces.
6. The self-protection parking lock according to claim 1, characterized in that: A positioning groove is arranged on the first spring seat, and a positioning block is arranged on the driving shaft. The positioning block is fitted in the positioning groove so that the first spring seat slides axially along the driving shaft.
7. The self-protection parking lock according to claim 1, characterized in that: The first spring seat is provided with a positioning groove, which is rotatably arranged in the fixed sleeve at the end of the driving shaft, and a positioning block is arranged on the outer side of the fixed sleeve, and the positioning block is adapted in the positioning groove, the first spring seat is slidably sleeved outside the fixed sleeve, and the second spring seat is fixedly sleeved outside the fixed sleeve, and the fixed sleeve is fixed in the lock body.
8. The self-protection parking lock according to claim 7, characterized in that: The outer end of the second engaging sleeve is provided with an avoidance groove, which is adapted and corresponds to the fixed sleeve. When the second engaging sleeve is compressed spring-type, the fixed sleeve enters the avoidance groove.
9. The self-protection parking lock according to claim 8, characterized in that: It also includes a friction portion, which is arranged between the fixing sleeve and the avoidance groove.
10. The self-protection parking lock according to claim 8, characterized in that: The driving assembly comprises a driving motor and a gear box. The gear box has two input shafts and two output shafts in the same direction. The two output shafts are respectively connected to the driving shafts on both sides.