Waterproof movement and parking lock

Abstract

The waterproof machine core comprises an electric driving mechanism and a transmission mechanism which are in transmission connection, the transmission mechanism comprises a screw rod and a nut which is in threaded transmission connection with the screw rod, and the electric driving mechanism drives the screw rod to rotate so as to drive the nut to reciprocate in the axial direction of the screw rod; the screw is sleeved with a first sealing sleeve and a second sealing sleeve which are elastic and telescopic in the axial direction, the nut is arranged between the first sealing sleeve and the second sealing sleeve, and the two axial ends of the nut are in sealing connection with the end of the first sealing sleeve and the end of the second sealing sleeve correspondingly. The inner wall of the first sealing sleeve and the inner wall of the second sealing sleeve are spaced from the outer wall of the screw rod. The waterproof movement provided by the utility model not only can resist water for a long time, but also is small in size when being assembled in the parking lock, can improve the space utilization rate of the parking lock, and avoids the situation that the parking convenience is influenced due to the overlarge size of the parking lock.

Description

Technical Field

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

[0002] With the development of the country and the progress of society, cars are becoming more and more common as a means of transportation. With the increase in the number of cars, parking space resources are tight and supply and demand are unbalanced. In order to strengthen management, some parking places, especially roadside parking spaces, usually install parking locks on the parking spaces. Common parking locks are unmanned and automatically controlled. When there is no car parked, the parking lock is closed and does not affect the normal passage of pedestrians. When a car enters the parking space, the parking lock automatically recognizes and locks to restrict the movement of the car. The owner needs to scan the code to pay, and the parking lock is closed before the car can leave.

[0003] The main power mechanism of the parking lock is the movement, which includes an electric drive mechanism and a transmission mechanism, so that the electric drive mechanism drives the transmission mechanism to open and close the parking lock. Therefore, the precise and sensitive transmission of the transmission mechanism is very important. However, since most parking locks are set up in the open air, rain, water, etc. can easily enter the parking lock, causing the transmission mechanism to malfunction due to the soaking of rain, water, etc., affecting the normal use of the parking lock.

[0004] To solve this problem, Chinese patent CN218147985U discloses a waterproof structure for intelligent parking ground locks, which drives the output shaft of the motor to fix a threaded lifting rod on the inner wall of the threaded fixing hole to rotate, so that the threaded lifting rod moves upward on the inner wall of the threaded fixing hole, and the top seat of the ground lock rises upward to open the ground lock. Through the two sealing frames provided on the ground lock base and the top seat of the ground lock, the corrugated sealing belts connected to the two sealing frames begin to open, so that the inside of the ground lock base and the top seat of the ground lock are in a closed space to avoid rain erosion. However, since its waterproof structure is arranged outside the ground lock, it will not only increase the volume of the ground lock, but also the waterproof structure is exposed to the outside and is easily damaged, and the purpose of long-term waterproofing cannot be achieved. Utility Model Content

[0005] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a waterproof movement to improve the safety of the movement. It is not only waterproof for a long time, but also has a small size when assembled in a parking lock, which can improve the space utilization of the parking lock and avoid the parking lock being too large to affect the convenience of parking.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A waterproof movement, comprising: an electric drive mechanism and a transmission mechanism in transmission connection, the transmission mechanism comprising a screw and a nut in thread transmission connection with the screw, the electric drive mechanism driving the screw to rotate to drive the nut to reciprocate along the axial direction of the screw;

[0008] An elastically retractable first sealing sleeve and a second sealing sleeve are provided along the axial direction of the outer edge of the screw, a nut is provided between the first sealing sleeve and the second sealing sleeve, and the axial ends of the nut are respectively sealed and connected with the corresponding ends of the first sealing sleeve and the second sealing sleeve, and the inner walls of the first sealing sleeve and the second sealing sleeve are both spaced apart from the outer wall of the screw.

[0009] The waterproof movement provided by the utility model is arranged with a spacing between the inner wall of the first sealing sleeve and the inner wall of the second sealing sleeve arranged outside the screw rod, and the two axial ends of the nut are respectively sealed and connected with the corresponding ends of the first sealing sleeve and the second sealing sleeve, so that the connection structure of the first sealing sleeve, the nut and the second sealing sleeve can completely seal the screw rod, avoiding rain, water and the like from entering the movement and corroding the screw rod, thereby achieving a good waterproof effect on the screw rod, ensuring the accurate and sensitive transmission of the transmission mechanism, and improving the safety of the movement. In addition, the arrangement of the first sealing sleeve and the second sealing sleeve will not increase the volume of the movement, so that the movement has the characteristics of small volume and convenient installation.

[0010] Furthermore, the transmission mechanism also includes a transmission base, which includes a first fixed seat and a second fixed seat arranged at both axial ends of the screw, one end of the screw is sealed and connected to the electric drive mechanism via the first fixed seat, and the other end of the screw is sealed and connected to the second fixed seat, a first sealing sleeve is sealed between the first fixed seat and the nut, and a second sealing sleeve is sealed between the second fixed seat and the nut, and the sealing sleeve is sealed to the transmission base.

[0011] Therefore, the setting of the transmission base can play a role in limiting and fixing the screw. The axial end portions of the screw are respectively sealed and rotatably installed on the first fixed seat and the second fixed seat, so that the axial end portions of the screw are limited and fixed, avoiding shaking or deviation of the screw during rotation, so that the screw always rotates around a central axis, and the transmission is more precise.

[0012] Furthermore, the end of the first fixing seat close to the first sealing sleeve and the end of the nut are both sealed and wrapped in the first sealing sleeve, the first sealing sleeve and the first fixing seat are connected by interference fit, and the first sealing sleeve and the nut are connected by interference fit;

[0013] The end of the second fixing seat close to the second sealing sleeve and the end of the nut are both sealed and wrapped in the second sealing sleeve. The second sealing sleeve and the second fixing seat are connected by interference fit, and the second sealing sleeve and the nut are connected by interference fit.

[0014] As a result, the two axial ends of the first sealing sleeve respectively seal and cover part of the first fixing seat and part of the nut, and the two axial ends of the second sealing sleeve respectively seal and cover part of the second fixing seat and part of the nut, so that the connection structure of the first fixing seat, the first sealing sleeve, the nut, the second sealing sleeve and the second fixing seat is better sealed, further improving the waterproof effect of the screw.

[0015] In addition, the interference fit connection enables the two axial ends of the first sealing sleeve to tightly wrap the first fixing seat and the nut at the corresponding position, and the two axial ends of the second sealing sleeve to tightly wrap the second fixing seat and the nut at the corresponding position, so that the connection structure of the first fixing seat, the first sealing sleeve, the nut, the second sealing sleeve and the second fixing seat further improves the sealing performance of the screw.

[0016] Furthermore, the radial outer wall of the wrapped end of the first fixing seat and / or the nut and / or the second fixing seat is provided with at least one circle of grooves, and sealing members are sealed in the grooves. The number of sealing members is equal to the number of grooves, and the positions of the sealing members correspond one-to-one to the positions of the grooves. The sealing members are sealingly connected to the first sealing sleeve and / or the second sealing sleeve at the corresponding positions.

[0017] As a result, the sealing performance of the connection structure among the first fixing seat, the first sealing sleeve, the nut, the second sealing sleeve and the second fixing seat is further improved, thereby improving the waterproof effect on the screw.

[0018] Furthermore, the groove and the seal are arranged in a continuous ring structure, which has a better waterproof effect, thereby further improving the safety of the screw.

[0019] Furthermore, the sealing member is an elastic sealing member, and the sealing member and the first sealing sleeve at the corresponding position are an integral structure or a split structure, and / or the sealing member and the second sealing sleeve at the corresponding position are an integral structure or a split structure;

[0020] The inner diameter of a circle of sealing elements is smaller than the inner diameter of a circle of grooves corresponding thereto, so that the correspondingly arranged sealing elements are connected to the grooves by interference fit.

[0021] As a result, the sealing member can be tightly fitted in the groove, so that the connection between the groove and the sealing member is tighter, further improving the waterproof effect.

[0022] Moreover, when the seal and the first sealing sleeve and / or the second sealing sleeve at the corresponding position are an integrated structure, the seal and the first sealing sleeve and / or the second sealing sleeve at the corresponding position are tightly connected, and the waterproof effect is better; when the seal and the first sealing sleeve and / or the second sealing sleeve at the corresponding position are a split structure, once the seal, the first sealing sleeve or the second sealing sleeve is damaged due to extrusion or the like, the damaged parts can be replaced separately, and the remaining parts can still be used, saving costs.

[0023] At the same time, the elastic seal is not only easy to install, but also not easily damaged when squeezed due to its own elasticity, which increases the service life of the seal, saves costs and effectively ensures the waterproof effect.

[0024] Furthermore, a clamp is provided on the outer wall sealing sleeve at the axial end of the first sealing sleeve and / or the second sealing sleeve.

[0025] As a result, the sealing performance of the connection between the first sealing sleeve and the first fixing seat and / or the nut is further strengthened, and / or the sealing performance of the connection between the second sealing sleeve and the second fixing seat and / or the nut is further strengthened, so that the waterproof effect of the sealing connection structure of the first fixing seat, the first sealing sleeve, the nut, the second sealing sleeve and the second fixing seat on the screw is further enhanced.

[0026] Furthermore, the end of the first fixing seat away from the first sealing sleeve is sealed and connected to the output end of the electric drive mechanism, and one end of the screw is drivingly connected to the output shaft of the output end of the electric drive mechanism.

[0027] Furthermore, part of the output end of the electric drive mechanism is arranged in the first fixing seat, the radial outer wall sealing sleeve of the output end of the electric drive mechanism is provided with a first sealing ring, and the first sealing ring is sealingly connected to the inner wall of the first fixing seat.

[0028] Therefore, by arranging the first sealing ring between the electric drive mechanism and the first fixing seat, the sealing between the electric drive mechanism and the first fixing seat is strengthened, and water is prevented from entering from between the first fixing seat and the electric drive mechanism to damage the screw.

[0029] Furthermore, a radial outer wall sealing sleeve at the end of the screw corresponding to the first fixed seat is provided with a second sealing ring, the second sealing ring is sealingly connected to the inner wall of the first fixed seat, and the second sealing ring is rotatably connected to the screw or the first fixed seat.

[0030] Therefore, by arranging a second sealing ring between the first fixing seat and the screw, the sealing of the connection between the first fixing seat and the screw is strengthened, preventing water from flowing from between the first fixing seat and the screw into the outer surface of the screw, thereby achieving a good waterproof effect on the outer surface of the screw.

[0031] Furthermore, the second fixed seat is provided with an axially penetrating through hole, the corresponding end seal of the screw is rotatably arranged in the through hole, and the radial outer wall sealing sleeve of the end of the screw away from the first fixed seat is provided with a third sealing ring, the third sealing ring is sealed and connected to the inner wall of the second fixed seat, and the third sealing ring is rotatably connected to the screw or the second fixed seat.

[0032] Therefore, by arranging the third sealing ring between the second fixing seat and the screw, the sealing of the connection between the second fixing seat and the screw is strengthened, preventing water from flowing from between the second fixing seat and the screw into the outer surface of the screw, thereby achieving a good waterproof effect on the outer surface of the screw.

[0033] Furthermore, the waterproof movement also includes a clutch mechanism, and the clutch mechanism and the electric drive mechanism are respectively arranged at the two axial ends of the transmission mechanism. The clutch mechanism includes a bearing, a bearing cover and a clutch key. The clutch key is transmission-connected to the corresponding end of the screw, and the bearing is rotatably mounted on the clutch key. The bearing cover and the second fixed seat are both sealingly mounted on part of the bearing, and the bearing cover and the clutch key are sealed and rotatably connected.

[0034] Therefore, in the event of a failure or power outage of the electric drive mechanism, the clutch mechanism can be used in an emergency to drive the transmission movement of the transmission mechanism, and the clutch mechanism and the transmission mechanism are sealed to ensure a waterproof effect on the screw.

[0035] Furthermore, a fifth sealing ring is provided on the radial outer wall sealing sleeve of the bearing, and the fifth sealing ring is sealedly connected to the second fixing seat and the bearing cover;

[0036] A sixth sealing ring is sealed between the clutch key and the bearing cover, and the sixth sealing ring is rotatably connected to the clutch key or the bearing cover.

[0037] Therefore, waterproof structures are provided inside the clutch mechanism and between the clutch mechanism and the transmission mechanism, thereby preventing water from entering the clutch mechanism or between the clutch mechanism and the transmission mechanism to damage the screw.

[0038] Furthermore, the axial end portions of the screw are respectively sealed and rotatably sleeved with a first rod sleeve and a second rod sleeve, the first fixed seat sealing sleeve is arranged on the first rod sleeve, the second fixed seat sealing sleeve is arranged on the second rod sleeve, and a fourth sealing ring is arranged between the first rod sleeve and the first fixed seat and / or between the second rod sleeve and the second fixed seat.

[0039] Therefore, in order to ensure the flexible rotation of the screw, the inner walls of the first rod sleeve and the second rod sleeve can be directly processed by grinding, heat treatment, etc. Compared with processing the inner walls of the first fixed seat and the second fixed seat with a larger volume, the setting of the small component first rod sleeve and the second rod sleeve can reduce the processing difficulty.

[0040] In addition, the fourth sealing ring improves the sealing performance of the connection between the first rod sleeve and the first fixing seat, and between the second rod sleeve and the second fixing seat, thereby preventing water from entering between the first rod sleeve and the first fixing seat, and between the second rod sleeve and the second fixing seat to damage the screw.

[0041] In summary, the beneficial effects of the waterproof movement provided by the utility model are as follows:

[0042] 1) The inner wall of the first sealing sleeve and the inner wall of the second sealing sleeve arranged outside the screw are spaced apart from the outer wall of the screw, and the axial ends of the nut are respectively sealed and connected with the corresponding ends of the first sealing sleeve and the second sealing sleeve, so that the connection structure of the first sealing sleeve, the nut and the second sealing sleeve can completely seal the screw, avoiding rain, water, etc. from entering the parking lock and corroding the screw, thereby achieving a good waterproof effect on the screw, ensuring the accurate and sensitive transmission of the transmission mechanism, and improving the safety of the movement;

[0043] 2) The screw is limited and fixed by setting a transmission base to ensure that the rotation of the screw always revolves around a central axis, avoiding the deviation of the screw rotation and ensuring the accuracy of the transmission mechanism;

[0044] 3) By providing an interference fit connection structure between the first sealing sleeve and the first fixing seat and the nut, and an interference fit connection structure between the second sealing sleeve and the second fixing seat and the nut, the axial ends of the first sealing sleeve can tightly wrap the first fixing seat and the nut at the corresponding position, and the axial ends of the second sealing sleeve can tightly wrap the second fixing seat and the nut at the corresponding position, so that the sealing performance of the connection structure of the first fixing seat, the first sealing sleeve, the nut, the second sealing sleeve and the second fixing seat to the screw is further improved, thereby significantly improving the waterproof effect;

[0045] 4) The arrangement of the seal and the groove and the interference fit connection between the two enable the seal to be tightly sleeved in the groove, making the connection between the groove and the seal tighter. Combined with the integrated structure of the seal and the first sealing sleeve and / or the second sealing sleeve, the waterproof effect is greatly enhanced;

[0046] 5) The outer wall sealing sleeves of the axial ends of the first sealing sleeve and / or the second sealing sleeve are provided with clamps to enhance the sealing performance of the connection between the first sealing sleeve and the first fixing seat and the nut, and / or the sealing performance of the connection between the second sealing sleeve and the second fixing seat and the nut. The axial ends of the first sealing sleeve can tightly wrap the first fixing seat and the nut at the corresponding positions, and the axial ends of the second sealing sleeve can tightly wrap the second fixing seat and the nut at the corresponding positions, so that the sealing performance of the connection structure of the first fixing seat, the first sealing sleeve, the nut, the second sealing sleeve and the second fixing seat to the screw is further improved, thereby significantly improving the waterproof effect;

[0047] 6) The sealed connection between the electric drive mechanism and the first fixing seat prevents water from entering between the first fixing seat and the electric drive mechanism and damaging the screw;

[0048] 7) The setting of the clutch mechanism can respond to the failure of the electric drive mechanism or power outage in time, avoiding the parking lock from being unable to be opened or closed and affecting the convenience of parking; and waterproof structures are provided inside the clutch mechanism and between the clutch mechanism and the transmission mechanism to prevent water from entering the clutch mechanism or between the clutch mechanism and the transmission mechanism and damaging the screw.

[0049] The utility model also provides a parking lock, comprising an electric control box, a flap and a waterproof movement. The waterproof movement is arranged in the electric control box, and the waterproof movement is transmission-connected to the flap.

[0050] In the parking lock provided by the utility model, the arrangement of the first sealing sleeve and the second sealing sleeve will not increase the volume of the movement additionally. The movement is assembled in the parking lock and occupies a smaller space, thereby improving the space utilization rate in the parking lock. Moreover, compared with the arrangement of the waterproof structure on the outside of the parking lock, the parking lock can be prevented from being too large and affecting the convenience of parking. At the same time, the waterproof structure is prevented from being exposed on the outside of the parking lock and being easily damaged, thereby achieving the purpose of long-term waterproofing and extending the service life of the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the structure of the parking lock of the utility model;

[0052] Figure 2 This is a schematic diagram of the structure of the waterproof movement of the utility model assembled in the parking lock;

[0053] Figure 3 It is a structural schematic diagram of the movement of the utility model;

[0054] Figure 4 It is a schematic structural diagram of the waterproof movement of the utility model;

[0055] Figure 5 It is a schematic structural diagram of the waterproof movement of Example 1;

[0056] Figure 6 It is an enlarged view of the waterproof movement A, B, C, and D of Example 1;

[0057] Figure 7 It is a schematic structural diagram of the waterproof movement of Example 2;

[0058] Figure 8 It is an enlarged view of the waterproof movement A, B, C, and D of Example 2;

[0059] Fig. 9 It is a schematic structural diagram of the waterproof movement of Example 3;

[0060] Fig.10 It is an enlarged view of the waterproof movement A, B, C, and D of Example 3;

[0061] Fig.11 It is a schematic structural diagram of a waterproof movement of Example 4;

[0062] Fig.12 This is an enlarged view of point E of the waterproof movement of Example 4.

[0063] The meanings of the reference numerals are as follows:

[0064] 01. Waterproof movement; 02. Electric control box; 03. Flap; 1. Electric drive mechanism; 2. Screw; 3. Nut; 31. Second groove; 32. Third groove; 4. First fixing seat; 41. First groove; 5. Second fixing seat; 51. Fourth groove; 6. First sealing sleeve; 61. First sealing member; 62. Second sealing member; 7. Second sealing sleeve; 71. Third sealing member; 72. Fourth sealing member; 8. Clamp; 9. First sealing ring; 10. Second sealing ring; 11. Third sealing ring; 12. First rod sleeve; 13. Second rod sleeve; 14. Fourth sealing ring; 15. Bearing; 16. Bearing cover; 17. Clutch key; 18. Fifth sealing ring; 19. Sixth sealing ring. DETAILED DESCRIPTION

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Example 1

[0069] This embodiment provides a waterproof movement, which includes a movement and a waterproof structure arranged outside the movement. Figure 3The movement includes an electric drive mechanism 1 and a transmission mechanism in transmission connection, and the transmission mechanism includes a screw rod 2 and a nut 3 in threaded transmission connection with the screw rod 2. The outer wall of the screw rod 2 is spirally provided with an external thread along the axial direction, and the inner wall of the nut 3 is provided with an internal thread matching the external thread. The nut 3 is threadedly sleeved on the screw rod 2. The electric drive mechanism 1 is in transmission connection with the screw rod 2 to drive the screw rod 2 to rotate, thereby driving the nut 3 to make a linear reciprocating motion along the axial direction of the screw rod 2, so as to realize the transmission connection between the electric drive mechanism 1 and the transmission mechanism.

[0070] See also Figure 4 and Figure 5 An elastically retractable first sealing sleeve 6 and a second sealing sleeve 7 are sleeved along the axial direction of the screw 2, the nut 3 is arranged between the first sealing sleeve 6 and the second sealing sleeve 7, and the axial ends of the nut 3 are respectively sealed and connected with the corresponding ends of the first sealing sleeve 6 and the ends of the second sealing sleeve 7, and the inner wall of the first sealing sleeve 6 and the inner wall of the second sealing sleeve 7 are set at a distance from the outer wall of the screw 2.

[0071] Thus, the waterproof movement of this embodiment is arranged with the inner wall of the first sealing sleeve 6 and the inner wall of the second sealing sleeve 7 disposed on the outer surface of the screw 2 at a distance from the outer wall of the screw 2, and the two axial ends of the nut 3 are respectively sealed and connected with the corresponding ends of the first sealing sleeve 6 and the ends of the second sealing sleeve 7, so that the connection structure of the first sealing sleeve 6, the nut 3 and the second sealing sleeve 7 can completely seal the screw 2, avoiding rain, water, etc. from entering the movement and corroding the screw 2, thereby achieving a good waterproof effect on the screw 2, ensuring the accurate and sensitive transmission of the transmission mechanism, and improving the safety of the movement. In addition, the arrangement of the first sealing sleeve 6 and the second sealing sleeve 7 will not increase the volume of the movement, so that the movement has the characteristics of small volume and convenient installation.

[0072] It should be noted here that, on the basis of the above structure, in order to ensure that the connection structure of the first sealing sleeve 6, the nut 3 and the second sealing sleeve 7 can completely seal the screw 2, one axial end of the first sealing sleeve 6 is a sealing structure, or when the first sealing sleeve 6 is close to the electric drive mechanism 1, one axial end of the first sealing sleeve 6 cooperates with the electric drive mechanism 1 to form a sealing structure, so as to seal the corresponding end of the screw 2 in the first sealing sleeve 6, and the other axial end of the first sealing sleeve 6 is provided with an opening, and the interior of the first sealing sleeve 6 is a cavity, so that the first sealing sleeve 6 can be sleeved with the screw 2 through the open end, and the open end of the first sealing sleeve 6 is sealed and connected to the corresponding end of the nut 3. Similarly, one axial end of the second sealing sleeve 7 is a sealing structure, or when the second sealing sleeve 7 is close to the electric drive mechanism 1, one axial end of the second sealing sleeve 7 cooperates with the electric drive mechanism 1 to form a sealing structure to seal the corresponding end of the screw 2 in the second sealing sleeve 7, and the other axial end of the second sealing sleeve 7 is provided with an opening, and the interior of the second sealing sleeve 7 is a cavity, so that the second sealing sleeve 7 can be sleeved with the screw 2 through the open end, and the open end of the second sealing sleeve 7 is sealed and connected to the corresponding end of the nut 3.

[0073] In addition, the end of the first sealing sleeve 6 away from the nut 3 and the end of the second sealing sleeve 7 away from the nut 3 are both fixedly arranged, and the fixed structure can be a fixed plate, a support plate, etc. The end of the first sealing sleeve 6 connected to the nut 3 and the end of the second sealing sleeve 7 connected to the nut 3 both reciprocate synchronously with the nut 3, so that the first sealing sleeve 6 and the second sealing sleeve 7 perform telescopic movement, so as to ensure that during the movement of the nut 3, the connection structure of the first sealing sleeve 6, the nut 3 and the second sealing sleeve 7 can also completely seal the screw 2.

[0074] The first sealing sleeve 6 and the second sealing sleeve 7 can be common bellows on the market, or can be other irregularly shaped parts, such as shapes similar to stacking cups, etc., as long as the elastic and retractable requirements are met.

[0075] When the waterproof movement of this embodiment is used in a parking lock, the high-speed rotation of the screw rod 2 is not required, and the screw rod 2 only needs to be accurately rotated along an axis. Therefore, the transmission mechanism of this embodiment also includes a transmission base. Figure 5 The transmission base includes a first fixed seat 4 and a second fixed seat 5 arranged at the two axial ends of the screw 2. One end of the screw 2 is sealed and connected to the electric drive mechanism 1 through the first fixed seat 4, and the other end of the screw 2 is sealed and connected to the second fixed seat 5. A first sealing sleeve 6 is sealed between the first fixed seat 4 and the nut 3, and a second sealing sleeve 7 is sealed between the second fixed seat 5 and the nut 3.

[0076] Therefore, the setting of the transmission base can play a role in limiting and fixing the screw 2. The two axial ends of the screw 2 are respectively sealed and rotatably installed on the first fixed seat 4 and the second fixed seat 5, so that the two axial ends of the screw 2 are limited and fixed, avoiding the screw 2 from shaking or deflecting during rotation, affecting the accuracy of the transmission.

[0077] In this embodiment, the first fixing seat 4 and the first sealing sleeve 6 are arranged at one end of the screw rod 2 close to the electric drive mechanism 1. The first fixing seat 4 is provided with openings at both axial ends, and the first fixing seat 4 is provided with a cavity connecting the two openings, so that one end of the screw rod 2 can be rotatably installed in the cavity of the first fixing seat 4 through the opening at one end of the first fixing seat 4, and is transmission-connected with the electric drive mechanism 1 through the opening at the other end of the first fixing seat 4. The first fixing seat 4 and the electric drive mechanism 1 cooperate to form a sealing structure to seal the corresponding end of the screw rod 2. The first sealing sleeve 6 is provided with openings at both axial ends and is provided with a cavity connecting the two openings. The screw rod 2 passes through the cavity of the first sealing sleeve 6, and the outer wall of the screw rod 2 is spaced from the inner wall of the first sealing sleeve 6. The axial ends of the first sealing sleeve 6 are respectively sealed and connected to the nut 3 and the first fixing seat 4.

[0078] One axial end of the second fixing seat 5 is a sealing structure, and the other axial end of the second fixing seat 5 is provided with an opening, and the interior of the second fixing seat 5 is a cavity, so that the corresponding end of the screw rod 2 can be rotatably installed in the cavity of the second fixing seat 5 through the opening. The second sealing sleeve 7 has openings at both axial ends and a cavity connecting the two openings. The screw rod 2 passes through the cavity of the second sealing sleeve 7, and the outer wall of the screw rod 2 is spaced from the inner wall of the second sealing sleeve 7. The axial ends of the second sealing sleeve 7 are sealed to connect the nut 3 and the opening end of the second fixing seat 5, respectively.

[0079] Therefore, the connection structure of the second fixing seat 5 , the second sealing sleeve 7 , the nut 3 , the first sealing sleeve 6 and the first fixing seat 4 in cooperation with the electric drive mechanism 1 can completely seal the screw 2 .

[0080] On the basis of the above structure, the working principle of the transmission mechanism is as follows: when the screw 2 rotates to drive the nut 3 to move toward the first fixed seat 4, the first sealing sleeve 6 is compressed and the second sealing sleeve 7 is stretched. When the screw 2 rotates in the opposite direction to drive the nut 3 to move toward the second fixed seat 5, the second sealing sleeve 7 is compressed and the first sealing sleeve 6 is stretched. Since the first sealing sleeve 6 and the second sealing sleeve 7 are both elastic and retractable structures, they are not easily damaged during the operation of the transmission mechanism. In addition, since the inner wall of the first sealing sleeve 6 and the inner wall of the second sealing sleeve 7 are set at a distance from the outer wall of the screw 2, the first sealing sleeve 6 and the second sealing sleeve 7 do not affect the rotation of the screw 2 while playing a waterproof role. At the same time, the first fixed seat 4 and the second fixed seat 5 can not only waterproof the axial ends of the screw 2, but also limit the screw 2 to prevent the screw 2 from shaking or shifting due to long-term rotation, thereby ensuring the precise transmission of the transmission mechanism.

[0081] Therefore, the waterproof movement of this embodiment is arranged with a distance between the inner wall of the first sealing sleeve 6 and the inner wall of the second sealing sleeve 7 arranged outside the screw 2, and the first sealing sleeve 6 is sealed between the first fixing seat 4 and the nut 3, and the second sealing sleeve 7 is sealed between the second fixing seat 5 and the nut 3, so that the sealing connection structure of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7 and the second fixing seat 5 can completely seal the screw 2, avoiding the erosion of the screw 2 by rain, water, etc. entering the movement, thereby achieving a good waterproof effect on the screw 2, ensuring the precise and sensitive transmission of the transmission mechanism, and improving the safety of the movement.

[0082] It should be noted that the elastically retractable first sealing sleeve 6 and the second sealing sleeve 7 are both made of elastic materials, such as rubber, silicone, etc., to meet the requirements of elasticity and retractability and not easy to be damaged. Of course, here only two materials that may be used for the first sealing sleeve 6 and the second sealing sleeve 7 are listed, and the materials that meet the requirements on the market are not limited to these two. In actual applications, the selection can be made by comprehensively considering factors such as material performance and cost.

[0083] The specific structure of the sealed connection between the first sealing sleeve 6 and the first fixing seat 4 and the nut 3, and the sealed connection between the second sealing sleeve 7 and the second fixing seat 5 and the nut 3, can be as follows: the two axial end edges of the first sealing sleeve 6 are sealed with the end edges corresponding to the first fixing seat 4 and the end edges corresponding to the nut 3, respectively, and the two axial end edges of the second sealing sleeve 7 are sealed with the end edges corresponding to the second fixing seat 5 and the end edges corresponding to the nut 3, respectively. That is, according to the connection sequence of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7, and the second fixing seat 5, only the end edges of each component are in contact and sealed to achieve a waterproof effect. The defect of this structure is that gaps are easily formed at the edge connection of the two components, resulting in waterproof failure.

[0084] Therefore, the sealing connection between the first sealing sleeve 6 and the first fixing seat 4 and the nut 3, and the sealing connection between the second sealing sleeve 7 and the second fixing seat 5 and the nut 3 in this embodiment are as shown in FIG. Figure 5 , the end of the first fixing seat 4 near the first sealing sleeve 6 and the end of the nut 3 are both sealed and wrapped in the first sealing sleeve 6, and the end of the second fixing seat 5 near the second sealing sleeve 7 and the end of the nut 3 are both sealed and wrapped in the second sealing sleeve 7. As a result, the axial ends of the first sealing sleeve 6 respectively seal and cover part of the first fixing seat 4 and part of the nut 3, and the axial ends of the second sealing sleeve 7 respectively seal and cover part of the second fixing seat 5 and part of the nut 3, so that the connection structure of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7 and the second fixing seat 5 has better sealing performance, and the waterproof effect on the screw 2 is further improved.

[0085] The requirements of the above structure are that the inner walls of the two axial ends of the first sealing sleeve 6 are in sealing contact with the outer walls of the corresponding first fixing seat 4 and the outer walls of the nut 3, and the inner walls of the two axial ends of the second sealing sleeve 7 are in sealing contact with the outer walls of the corresponding second fixing seat 5 and the outer walls of the nut 3. Among them, the simplest structure is: the inner walls of the two axial ends of the first sealing sleeve 6 just fit with the outer walls of the corresponding first fixing seat 4 and the outer walls of the nut 3, and the inner walls of the two axial ends of the second sealing sleeve 7 just fit with the outer walls of the corresponding second fixing seat 5 and the outer walls of the nut 3. Although this structure can achieve the effect of sealing and waterproofing, during the linear reciprocating motion of the nut 3 and the repeated compression and stretching of the first sealing sleeve 6 and the second sealing sleeve 7, the connection between the first sealing sleeve 6 and the first fixing seat 4 and the nut 3, and the connection between the second sealing sleeve 7 and the second fixing seat 5 and the nut 3 are easy to loosen, thereby making the waterproofing ineffective.

[0086] Therefore, the first sealing sleeve 6 of this embodiment is connected with the first fixing seat 4 by interference fit, and the first sealing sleeve 6 is connected with the nut 3 by interference fit. The second sealing sleeve 7 is connected with the second fixing seat 5 by interference fit, and the second sealing sleeve 7 is connected with the nut 3 by interference fit. As a result, the axial ends of the first sealing sleeve 6 can tightly wrap the first fixing seat 4 and the nut 3 at the corresponding positions, and the axial ends of the second sealing sleeve 7 can tightly wrap the second fixing seat 5 and the nut 3 at the corresponding positions, so that the sealing performance of the connection structure of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7 and the second fixing seat 5 is further improved for the screw 2.

[0087] In addition, a groove is provided on the radial outer wall of the wrapped end of the first fixing seat 4 and / or the nut 3 and / or the second fixing seat 5, and a seal is sealed in the groove, and the seal is sealedly connected to the first sealing sleeve 6 and / or the second sealing sleeve 7 at the corresponding position.

[0088] Specifically, see Figure 6 -A, a first groove 41 is formed on the radial outer wall of the end of the first fixing seat 4 wrapped by the first sealing sleeve 6, a first sealing member 61 is sealed in the first groove 41, and the first sealing member 61 is sealed and connected to the first sealing sleeve 6. And / or, see Figure 6 -B, the radial outer wall of the end of the nut 3 wrapped by the first sealing sleeve 6 is provided with a second groove 31, a second sealing member 62 is sealed in the second groove 31, and the second sealing member 62 is sealed and connected to the first sealing sleeve 6. And / or, see Figure 6 -C, a third groove 32 is formed on the radial outer wall of the end of the nut 3 wrapped by the second sealing sleeve 7, a third sealing member 71 is sealed in the third groove 32, and the third sealing member 71 is sealed and connected to the second sealing sleeve 7. And / or, see Figure 6 -D, a fourth groove 51 is formed on the radial outer wall of the end portion of the second fixing seat 5 wrapped by the second sealing sleeve 7 , a fourth sealing member 72 is sealed in the fourth groove 51 , and the fourth sealing member 72 is sealedly connected to the second sealing sleeve 7 .

[0089] Optimally, the wrapped end of the first fixing seat 4, the two wrapped ends of the nut 3, and the wrapped end of the second fixing seat 5 are all provided with grooves, and sealing members are sealed in the grooves, and each sealing member is sealedly connected to the first sealing sleeve 6 and the second sealing sleeve 7 at the corresponding position. Thus, the connection structure of the sealing member and the groove further improves the sealing performance of the connection structure of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7, and the second fixing seat 5, thereby improving the waterproof effect on the screw 2.

[0090] It should be noted that the groove can be a section or several intervals of arc structure set along the radial outer wall of the first fixing seat 4, the nut 3 and the second fixing seat 5. The number of seals is equal to the number of arc grooves, and the positions correspond one to one.

[0091] Preferably, the groove of this embodiment is an annular structure arranged along the radial outer wall of the first fixing seat 4, the nut 3 and the second fixing seat 5, that is, the radial outer wall of the end of the first fixing seat 4 wrapped by the first sealing sleeve 6 is provided with a circle of first grooves 41, and the position of the first sealing member 61 corresponds to the position of the first groove 41, and the shape matches. The radial outer wall of the end of the nut 3 wrapped by the first sealing sleeve 6 is provided with a circle of second grooves 31, and the position of the second sealing member 62 corresponds to the position of the second groove 31, and the shape matches. The radial outer wall of the end of the nut 3 wrapped by the second sealing sleeve 7 is provided with a circle of third grooves 32, and the position of the third sealing member 71 corresponds to the position of the third groove 32, and the shape matches. The radial outer wall of the end of the second fixing seat 5 wrapped by the second sealing sleeve 7 is provided with a circle of fourth grooves 51, and the position of the fourth sealing member 72 corresponds to the position of the fourth groove 51, and the shape matches. As a result, a more compact structural design is performed within a whole circle of the connection between the adjacent two components in the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7 and the second fixing seat 5, and the waterproof effect is further improved.

[0092] Furthermore, the first groove 41, the second groove 31, the third groove 32 and the fourth groove 51 can be provided with multiple circles at intervals, and accordingly, the first seal 61, the second seal 62, the third seal 71 and the fourth seal 72 can be provided correspondingly. Thus, it is possible to avoid leakage in the connection between a circle of grooves and the seal, so that the waterproof effect is greatly improved.

[0093] On this basis, the inner diameter of a circle of sealing members is smaller than the inner diameter of a circle of grooves corresponding thereto, so that the correspondingly arranged sealing members are connected by interference fit with the grooves. Specifically, the inner diameter of the first sealing member 61 is smaller than the inner diameter of the first groove 41, so that the first sealing member 61 is connected by interference fit with the first groove 41, and the first sealing member 41 can be tightly sleeved in the first groove 41. The inner diameter of the second sealing member 62 is smaller than the inner diameter of the second groove 31, so that the second sealing member 62 is connected by interference fit with the second groove 31, and the second sealing member 62 can be tightly sleeved in the second groove 31. The inner diameter of the third sealing member 71 is smaller than the inner diameter of the third groove 32, so that the third sealing member 71 is connected by interference fit with the third groove 32, and the third sealing member 71 can be tightly sleeved in the third groove 32. The inner diameter of the fourth sealing member 72 is smaller than the inner diameter of the fourth groove 51, so that the fourth sealing member 72 is connected by interference fit with the fourth groove 51, and the fourth sealing member 72 can be tightly sleeved in the fourth groove 51. Therefore, the sealing connection structure of the first fixing seat 4 , the first sealing sleeve 6 , the nut 3 , the second sealing sleeve 7 and the second fixing seat 5 has a better waterproof effect on the screw rod 2 .

[0094] Moreover, the seal of the present embodiment is an elastic seal. That is, the first seal 61, the second seal 62, the third seal 71 and the fourth seal 72 are all elastic seals made of materials such as rubber and silicone. It is not only easy to install, but also difficult to be damaged due to its own elasticity when squeezed, which increases the service life of the seal, saves costs and effectively ensures the waterproof effect. Of course, in practical applications, considering factors such as cost and market supply, the seal can also choose a non-elastic structure, such as hard plastic, etc., which is sleeved in the groove by the method of thermal expansion and contraction. Although it has a waterproof effect, it is complicated to install and is easily damaged after processing. It cannot be used for a long time. At the same time, it is easy to have installation gaps, which greatly reduces the waterproof effect.

[0095] At the same time, the seal of this embodiment is an integral structure with the first sealing sleeve 6 at the corresponding position and / or the seal is an integral structure with the second sealing sleeve 7 at the corresponding position. Specifically, the first seal 61 and the second seal 62 are both an integral structure with the first sealing sleeve 6. The third seal 71 and the fourth seal 72 are both an integral structure with the second sealing sleeve 7. In this case, the seals are all connected with the corresponding grooves by interference fit, that is, the corresponding seals are sealed and connected with the grooves, and combined with the integral structure of the seal and the corresponding corrugated sleeve, the sealing connection structure of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7 and the second fixing seat 5 is more compact and has a better waterproof effect.

[0096] The above waterproof structures are all waterproof designs for the surface of the screw. In addition, the sealed transmission connection structure between the electric drive mechanism 1 and the transmission mechanism is shown in Figure 5 The end of the first fixing seat 4 away from the first sealing sleeve 6 is sealed and connected to the output end of the electric drive mechanism 1, and one end of the screw rod 2 is drivingly connected to the output shaft of the output end of the electric drive mechanism 1. Thus, while waterproofing the connection between the electric drive mechanism 1 and the transmission mechanism, the transmission connection between the electric drive mechanism 1 and the screw rod 2 is achieved, so that the electric drive mechanism 1 drives the transmission movement of the screw rod 2 and the nut 3.

[0097] Specifically, part of the output end of the electric drive mechanism 1 is arranged in the first fixing seat 4, and the radial outer wall sealing sleeve of the output end of the electric drive mechanism 1 is provided with a first sealing ring 9, and the first sealing ring 9 is sealed and connected to the inner wall of the first fixing seat 4. Therefore, by providing the first sealing ring 9, the sealing between the electric drive mechanism 1 and the first fixing seat 4 is achieved, and water is prevented from entering from the connection between the electric drive mechanism 1 and the first fixing seat 4 to damage the screw 2, and effective waterproof protection is achieved for the threaded outer surface of the screw 2 and the end surface where the screw 2 is connected to the electric drive mechanism 1.

[0098] In addition, the outer surface of the electric drive mechanism 1 is also provided with a waterproof structure to prevent water from affecting the normal operation of the motor drive mechanism 1. In the present embodiment, the electric drive mechanism 1 is a reduction motor, and its outer surface is sealed and wrapped with a waterproof cover to achieve waterproofing of the reduction motor. In the prior art, there are various waterproof structures for reduction motors, which will not be described in detail here. Moreover, in actual applications, the electric drive mechanism 1 can make a variety of choices according to needs, such as the motor of the reduction motor and the reducer are coaxially fixedly connected as an integrated structure, or the reducer and the motor are split structures connected by flanges, couplings, etc.

[0099] The above is the specific structure of the waterproof movement of this embodiment. The movement is designed to be waterproof from three aspects: waterproofing of the surface of the screw 2, waterproofing of the connection between the electric drive mechanism 1 and the transmission mechanism, and waterproofing of the surface of the electric drive mechanism 1. It can not only be waterproof for a long time and improve the safety of the movement, but also has a small size when installed in the parking lock, which can improve the space utilization rate of the parking lock and avoid the parking lock being too large to affect the convenience of parking.

[0100] Example 2

[0101] See also Figure 7 The waterproof movement of this embodiment has two structural differences from that of embodiment 1. The first difference is that the radial outer wall sealing sleeve of the end of the screw 2 corresponding to the first fixed seat 4 is provided with a second sealing ring 10, and the second sealing ring 10 is sealed and connected to the inner wall of the first fixed seat 4. The second sealing ring 10 is rotatably connected to the screw 2 or the first fixed seat 4. Therefore, by arranging the second sealing ring 10 between the first fixed seat 4 and the screw 2, the sealing performance of the connection between the first fixed seat 4 and the screw 2 is strengthened, and water is prevented from entering from between the first fixed seat 4 and the screw 2 to damage the outer surface of the thread of the screw 2, and a good waterproof effect is achieved on the outer surface of the thread of the screw 2. At the same time, the second sealing ring 10 is rotatably connected to the screw 2 or the first fixed seat 4, and the setting of the second sealing ring 10 will not affect the rotation of the screw 2.

[0102] Second difference reference Figure 8 , the seal is a separate structure from the first sealing sleeve 6 and / or the second sealing sleeve 7 at the corresponding position. Specifically, referring to 8-A and 8-B, the first seal 61 and the second seal 62 are both separate structures from the first sealing sleeve 6. Referring to 8-C and 8-D, the third seal 71 and the fourth seal 72 are both separate structures from the second sealing sleeve 7. Once any of the first seal 61, the second seal 62, the third seal 71, the fourth seal 72, the first sealing sleeve 6, and the second sealing sleeve 7 is damaged due to extrusion or the like, the damaged parts can be replaced separately, and the remaining parts can continue to be used, saving costs.

[0103] Example 3

[0104] See also Fig. 9 There are two differences in the structure of the waterproof movement of this embodiment from that of the embodiment 1. The first difference is that the second fixing seat 5 is provided with an axially penetrating through hole, and the corresponding end of the screw 2 is rotatably sealed in the through hole, and the radial outer wall sealing sleeve of the end of the screw 2 away from the first fixing seat 4 is provided with a third sealing ring 11, and the third sealing ring 11 is sealed and connected to the inner wall of the second fixing seat 5, and the third sealing ring 11 is rotatably connected to the screw 2 or the second fixing seat 5. Therefore, by providing the third sealing ring 11 between the second fixing seat 5 and the screw 2, the sealing performance of the connection between the second fixing seat 5 and the screw 2 is strengthened, and water is prevented from flowing from the second fixing seat 5 and the screw 2 into the threaded outer surface of the screw 2, achieving a good waterproof effect on the threaded outer surface of the screw 2, and ensuring the normal use of the screw 2. At the same time, since the third sealing ring 11 is rotatably connected to the screw 2 or the second fixing seat 5, the sealing setting of the third sealing ring 11 does not affect the normal rotation of the screw 2.

[0105] This situation is applicable to the scenario where the screw rod 2 is relatively long, or the screw rod 2 needs to be connected to other components through the second fixing seat 5, for example, an additional manual device is provided.

[0106] Second difference reference Fig.10 , the outer wall sealing sleeves of the axial ends of the first sealing sleeve 6 and / or the second sealing sleeve 7 are provided with clamps 8. Specifically, the outer walls of both ends of the first sealing sleeve 6 that seals and wraps the first fixing seat 4 and the nut 3 are both provided with clamps 8, and the outer walls of both ends of the second sealing sleeve 7 that seals and wraps the second fixing seat 5 and the nut 3 are only provided with clamps 8. As a result, the sealing performance of the connection between the first sealing sleeve 6 and the first fixing seat 4 and the nut 3 is further enhanced, and the sealing performance of the connection between the second sealing sleeve 7 and the second fixing seat 5 and the nut 3 is further enhanced, so that the waterproof effect of the sealing connection structure of the first fixing seat 4, the first sealing sleeve 6, the nut 3, the second sealing sleeve 7 and the second fixing seat 5 on the screw 2 is greatly improved.

[0107] Example 4

[0108] See also Fig.11 The structural difference between the waterproof movement of this embodiment and that of embodiment 3 is that the axial ends of the screw rod 2 are respectively sealed and rotatably sleeved with a first rod sleeve 12 and a second rod sleeve 13, the first fixed seat 4 is sealed sleeved on the first rod sleeve 12, and the second fixed seat 5 is sealed sleeved on the second rod sleeve 13.

[0109] In the transmission mechanism, in order to ensure the flexible rotation of the screw 2 to achieve the accuracy of the transmission, the inner wall of the component for limiting the two axial ends of the screw 2 needs to be polished, heat-treated, etc., so that the inner wall is smooth and convenient for the rotation of the screw 2. The first fixed seat 4 and the second fixed seat 5 are large in size and complex in structure, which are not convenient for processing. The first rod sleeve 12 and the second rod sleeve 13 have the characteristics of small size, and when the inner wall of the first rod sleeve 12 and the second rod sleeve 13 is polished, heat-treated, etc., the processing difficulty can be reduced.

[0110] Therefore, the first groove 41 can be opened on the radial outer wall of the first rod sleeve 12, and the fourth groove 51 can be opened on the radial outer wall of the second rod sleeve 13, so that the processing and manufacturing are more convenient.

[0111] A fourth sealing ring 14 is provided in the sealing sleeve between the first rod sleeve 12 and the first fixing seat 4 and / or between the second rod sleeve 13 and the second fixing seat 5. Thus, the sealing performance of the connection between the first rod sleeve 12 and the first fixing seat 4 and between the second rod sleeve 13 and the second fixing seat 5 is improved, and water is prevented from entering between the first rod sleeve 12 and the first fixing seat 4 and between the second rod sleeve 13 and the second fixing seat 5 to damage the screw rod 2.

[0112] Furthermore, when the first rod sleeve 12 is provided, the first sealing ring 9 can be sealedly connected to the first rod sleeve 12 to ensure the sealing effect of the connection between the electric drive mechanism 1 and the transmission mechanism.

[0113] In addition, the waterproof movement of this embodiment also includes a clutch mechanism, the clutch mechanism and the electric drive mechanism 1 are respectively arranged at the axial ends of the transmission mechanism, the clutch mechanism includes a bearing 15, a bearing cover 16 and a clutch key 17, the clutch key 17 is in driving connection with the corresponding end of the screw 2, the bearing 15 is rotatably sleeved on the clutch key 17, the bearing cover 16 and the second fixing seat 5 are both sealed and sleeved on part of the bearing 15, and the bearing cover 16 is sealed and rotatably connected to the clutch key 17. Therefore, in the case of a failure or power outage of the electric drive mechanism 1, the clutch mechanism can be used for emergency use to drive the transmission movement of the transmission mechanism, and the clutch mechanism and the transmission mechanism are sealed and connected to ensure the waterproof effect on the screw 2.

[0114] The specific application scenario of the clutch mechanism can be: when the parking lock is in the locked state, the electric drive mechanism 1 fails or the power is cut off, the parking lock can be opened to turn the clutch key 17, the clutch key 17 drives the screw 2 to rotate, and drives the nut 3 to move linearly to close the parking lock, so that the vehicle can leave. Only one application scenario is listed here. Of course, the clutch mechanism can also be used in other scenarios, which are not listed here one by one. In addition, the setting of the bearing 15 can ensure the smooth rotation of the clutch key 17, which is more labor-saving.

[0115] See also Fig.12, the radial outer wall sealing sleeve of the bearing 15 is provided with a fifth sealing ring 18, and the fifth sealing ring 18 is sealed and connected to the second fixing seat 5 and the bearing cover 16. A sixth sealing ring 19 is sealed and provided between the clutch key 17 and the bearing cover 16, and the sixth sealing ring 19 is rotatably connected to the clutch key 17 or the bearing cover 16. Therefore, a waterproof structure is provided inside the clutch mechanism and between the clutch mechanism and the transmission mechanism, so that water is prevented from entering from the clutch mechanism or between the clutch mechanism and the transmission mechanism to damage the screw 2. In addition, the sixth sealing ring 19 is rotatably connected to the clutch key 17 or the bearing cover 16, so that the setting of the sixth sealing ring 19 will not affect the rotation of the clutch key 17.

[0116] Example 5

[0117] This embodiment provides a parking lock. Figure 1 The parking lock includes an electric control box 02 and a flap 03. Figure 2 The electric control box 02 is provided with a waterproof movement 01, and the structure of the waterproof movement 01 is as follows: Figure 3-12 As shown, it can be any structure in Examples 1-4. The waterproof movement 01 is electrically connected to the control system in the electric control box 02, and the waterproof movement 01 is transmission-connected to the flap 03. When a car enters the parking space, the control system in the electric control box 02 controls the movement to start to drive the flap 03 to rise, thereby limiting the movement of the car through the flap 03. When the owner wants to drive away, the owner needs to scan the code to pay, and the control system controls the movement to drive the flap 03 to fall, close the parking lock, and the car can leave.

[0118] In the parking lock of this embodiment, the first sealing sleeve 6 and the second sealing sleeve 7 are provided without increasing the volume of the movement. The movement is assembled in the parking lock and occupies a small space, which improves the space utilization rate in the parking lock. Moreover, compared with the waterproof structure provided on the outside of the parking lock, the parking lock is prevented from being too large and affecting the convenience of parking. At the same time, the waterproof structure is prevented from being exposed on the outside of the parking lock and being easily damaged, achieving the purpose of long-term waterproofing and extending the service life of the movement.

[0119] It is worth noting that the waterproof movement in the parking lock provided by the utility model is not only waterproof, but also dustproof, anti-electrical, etc. At the same time, the material and structure can be slightly modified to have other protective effects, which will not be elaborated here.

[0120] 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 waterproof movement, characterized in that: include: An electric drive mechanism and a transmission mechanism in transmission connection, wherein the transmission mechanism comprises a screw and a nut thread-transmission-connected to the screw, and the electric drive mechanism drives the screw to rotate so as to drive the nut to reciprocate along the axial direction of the screw; The outer side of the screw rod is provided with an elastically retractable first sealing sleeve and a second sealing sleeve along its axial direction, the nut is arranged between the first sealing sleeve and the second sealing sleeve, and the axial ends of the nut are respectively sealed and connected with the corresponding ends of the first sealing sleeve and the second sealing sleeve, and the inner wall of the first sealing sleeve and the inner wall of the second sealing sleeve are both set at a distance from the outer wall of the screw rod.

2. The waterproof movement according to claim 1, characterized in that: The transmission mechanism also includes a transmission base, which includes a first fixed seat and a second fixed seat arranged at both axial ends of the screw, one end of the screw is sealed and connected to the electric drive mechanism via the first fixed seat, and the other end of the screw is sealed and connected to the second fixed seat, the first sealing sleeve is sealed between the first fixed seat and the nut, and the second sealing sleeve is sealed between the second fixed seat and the nut.

3. The waterproof movement according to claim 2, characterized in that: The end of the first fixing seat close to the first sealing sleeve and the end of the nut are both sealed and wrapped in the first sealing sleeve, the first sealing sleeve and the first fixing seat are connected by interference fit, and the first sealing sleeve and the nut are connected by interference fit; The end of the second fixing seat close to the second sealing sleeve and the end of the nut are both sealed and wrapped in the second sealing sleeve, the second sealing sleeve and the second fixing seat are connected by an interference fit, and the second sealing sleeve and the nut are connected by an interference fit.

4. The waterproof movement according to claim 3, characterized in that: The radial outer wall of the wrapped end of the first fixing seat and / or the nut and / or the second fixing seat is provided with at least one circle of grooves, and a sealing member is sealed in the groove. The number of the sealing members is equal to the number of the grooves, and the positions of the sealing members correspond one-to-one to the positions of the grooves. The sealing member is sealingly connected to the first sealing sleeve and / or the second sealing sleeve at the corresponding position.

5. The waterproof movement according to claim 4, characterized in that: The sealing member is an elastic sealing member, and the sealing member and the first sealing sleeve at the corresponding position are an integral structure or a split structure, and / or the sealing member and the second sealing sleeve at the corresponding position are an integral structure or a split structure; The inner diameter of a circle of the sealing members is smaller than the inner diameter of a corresponding circle of the grooves, so that the correspondingly arranged sealing members are connected to the grooves by interference fit.

6. The waterproof movement according to claim 3, characterized in that: The outer wall sealing sleeves at the axial ends of the first sealing sleeve and / or the second sealing sleeve are provided with clamps.

7. The waterproof movement according to claim 2, characterized in that: The end of the first fixing seat away from the first sealing sleeve is sealed and connected to the output end of the electric drive mechanism, and one end of the screw is drivingly connected to the output shaft of the output end of the electric drive mechanism.

8. The waterproof movement according to claim 7, characterized in that: Part of the output end of the electric drive mechanism is arranged in the first fixing seat, and a radial outer wall sealing sleeve of the output end of the electric drive mechanism is provided with a first sealing ring, and the first sealing ring is sealed and connected to the inner wall of the first fixing seat.

9. The waterproof movement according to claim 7, characterized in that: A radial outer wall sealing sleeve at the end of the screw corresponding to the first fixing seat is provided with a second sealing ring, the second sealing ring is sealingly connected to the inner wall of the first fixing seat, and the second sealing ring is rotatably connected to the screw or the first fixing seat.

10. The waterproof movement according to claim 7, characterized in that: The second fixed seat is provided with an axially penetrating through hole, the corresponding end seal of the screw is rotatably arranged in the through hole, and the radial outer wall sealing sleeve of the end of the screw away from the first fixed seat is provided with a third sealing ring, the third sealing ring is sealingly connected to the inner wall of the second fixed seat, and the third sealing ring is rotatably connected to the screw or the second fixed seat.

11. The waterproof movement according to claim 10, characterized in that: The waterproof movement also includes a clutch mechanism, and the clutch mechanism and the electric drive mechanism are respectively arranged at the two axial ends of the transmission mechanism. The clutch mechanism includes a bearing, a bearing cover and a clutch key. The clutch key is transmission-connected to the corresponding end of the screw rod, and the bearing is rotatably sleeved on the clutch key. The bearing cover and the second fixing seat are both sealingly sleeved on part of the bearing, and the bearing cover and the clutch key are sealed and rotatably connected.

12. The waterproof movement according to claim 11, characterized in that: The radial outer wall sealing sleeve of the bearing is provided with a fifth sealing ring, and the fifth sealing ring is sealedly connected to the second fixing seat and the bearing cover; A sixth sealing ring is sealed between the clutch key and the bearing cover, and the sixth sealing ring is rotatably connected to the clutch key or the bearing cover.

13. The waterproof movement according to claim 2, characterized in that: The axial end parts of the screw rod are respectively sealed and rotatably sleeved with a first rod sleeve and a second rod sleeve, the first fixed seat sealing sleeve is arranged on the first rod sleeve, the second fixed seat sealing sleeve is arranged on the second rod sleeve, and a fourth sealing ring is arranged between the first rod sleeve and the first fixed seat and / or between the second rod sleeve and the second fixed seat.

14. A parking lock, characterized in that: It comprises an electric control box, a flap and the waterproof movement according to any one of claims 1 to 13, wherein the waterproof movement is arranged in the electric control box and is transmission-connected to the flap.

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