Speed reducer, driving device, laser radar cleaning system and laser radar

Abstract

The present disclosure relates to a speed reducer comprising: a housing; a worm; the worm gear is connected with the worm; the first end part of the worm is mounted on the shell through the first worm bearing; and a second worm bearing, wherein the second end part of the worm is arranged on the shell through the second worm bearing.

Description

Technical Field

[0001] The present disclosure relates to the field of laser radar, and more specifically to a reducer, a driving device, a laser radar cleaning system and a laser radar. Background Art

[0002] LiDAR is a radar system that uses laser beams to detect the position, speed and other characteristic quantities of target objects. It is a detection method that combines laser technology with photoelectric detection technology. LiDAR has high resolution, strong anti-active interference ability, good detection performance, small size and light weight. It is widely used in autonomous driving, transportation communications, drones, intelligent robots, resource exploration and other fields.

[0003] The coaxiality of the worm gear in the current vehicle-mounted reducer is poor, and the rotation stability of the worm gear is not high.

[0004] To address this problem, the present disclosure relates to a vehicle-mounted reducer that can improve the coaxiality of a worm bearing and make the worm rotate more stably. Summary of the invention

[0005] The purpose of the present disclosure is to overcome the above-mentioned and / or other problems in the prior art. It provides a reducer, a drive device and a laser radar cleaning system. Some embodiments of the present disclosure can improve the coaxiality of the worm bearing and make the worm rotation more stable.

[0006] According to some embodiments of the present disclosure, a reducer is provided, comprising a housing, a worm, a turbine, a first worm bearing and a second worm bearing. The worm wheel is connected to the worm. The first end of the worm is mounted on the housing via a first worm bearing. The second end of the worm is mounted on the housing via a second worm bearing. By mounting the first end of the worm on the housing via the first worm bearing and the second end of the worm on the housing via the second worm bearing, some embodiments of the present disclosure can improve the coaxiality of the worm bearing and make the rotation of the worm more stable.

[0007] Optionally, the reducer further includes a first worm gear bearing and a second worm gear bearing. The housing includes a first housing step surface and a second housing step surface. The worm includes a first worm step surface and a second worm step surface. The worm wheel includes a first worm wheel step surface and a second worm wheel step surface. The first worm bearing is limited between the first worm step surface and the first housing step surface. The first worm wheel bearing is limited between the first worm wheel step surface and the second housing step surface. One end surface of the second worm bearing abuts against the second worm step surface. One end surface of the second worm wheel bearing abuts against the second worm wheel step surface. In the reducer of the present disclosure, the worm, worm wheel and bearing are positioned by replacing the positioning member with a step surface. Some embodiments of the present disclosure reduce the difficulty of assembly and can also make the structure of the reducer more compact.

[0008] Optionally, the housing includes a first mounting hole and a second mounting hole. The first mounting hole is formed on a wall of the housing near the second end of the worm. The second mounting hole is formed on a wall of the housing near the second end of the worm wheel. The second end of the worm wheel passes through the second mounting hole. The reducer also includes a bearing end cover, which is mounted on the outer side of the housing and partially covers the second mounting hole, and the bearing end cover includes a third mounting hole, and the second end of the worm wheel passes through the third mounting hole.

[0009] Optionally, the first end of the worm wheel is mounted on the housing via the first worm wheel bearing. The second end of the worm wheel is mounted on the housing via the second worm wheel bearing. The second worm wheel bearing is located in the second mounting hole. The structure of the reducer disclosed in the present invention can improve the coaxiality of the worm wheel bearing by mounting the worm wheel bearing on the same housing, so that the rotation of the worm wheel is more stable.

[0010] Optionally, the bearing end cover includes a protrusion protruding toward the housing side along the axial direction of the worm wheel. The second worm wheel bearing is limited between the end face of the protrusion and the second worm wheel step surface. The worm wheel bearing is positioned by the protrusion and the worm wheel step surface. Some embodiments of the present disclosure make the structure of the reducer more compact. The reducer of the present disclosure can position the worm wheel and the bearing without additional positioning parts, making the structure of the reducer more compact.

[0011] Optionally, the housing includes a cover and a box body. The reducer includes a sealing strip. The sealing strip is at least partially located between the cover and the box body, and at least partially located in the first groove. The first groove is arranged on at least one of the cover and the box body. The sealing strip is interference-fitted with the first groove. In the reducer of the present disclosure, the gap between the cover and the box body is sealed by the sealing strip, and some embodiments of the present disclosure can improve the waterproof performance of the reducer.

[0012] Optionally, the box body includes at least one positioning hole, the cover includes at least one positioning hole, and the at least one positioning hole of the box body and the at least one positioning hole of the cover are connected via a positioning pin.

[0013] Optionally, one of the box body and the cover comprises at least one positioning hole, and the other of the box body and the cover comprises at least one positioning pin, and the positioning pin is disposed in the positioning hole.

[0014] Optionally, the first end of the worm wheel is mounted on the housing via the first worm wheel bearing. The second end of the worm wheel is mounted on the bearing end cover via the second worm wheel bearing. The third mounting hole includes a hole step surface. The second worm wheel bearing is located in the third mounting hole. The second worm wheel bearing is limited between the second worm wheel step surface and the hole step surface. In the structure of the reducer disclosed in the present invention, the worm wheel and the bearing are positioned by using the hole step surface instead of the positioning member, and some embodiments of the present invention reduce the difficulty of assembly and can also make the structure of the reducer more compact.

[0015] Optionally, the reducer further includes a retaining ring. The retaining ring is located on the inner side wall of the housing. The second worm bearing is limited between the second worm step surface and the retaining ring. In the structure of the reducer disclosed in the present invention, by using the worm step surface and the retaining ring instead of the positioning member to position the worm and the bearing, some embodiments of the present invention can make the structure of the reducer more compact.

[0016] Optionally, the housing further comprises a threaded pressing ring. The inner side of the first mounting hole comprises a thread. The threaded pressing ring cooperates with the thread of the first mounting hole. The second worm bearing is limited between the second worm step surface and the threaded pressing ring. In the structure of the reducer disclosed in the present invention, by using the worm step surface and the threaded pressing ring instead of the positioning member to position the worm and the bearing, some embodiments of the present invention can make the structure of the reducer more compact.

[0017] Optionally, the reducer further includes: a bearing end cover seal. The bearing end cover seal is located between the inner side surface of the bearing end cover and the other end surface of the second worm gear bearing. And it abuts against the second end of the worm gear. In the reducer of the present disclosure, the gap between the bearing end cover and the worm gear bearing is sealed by the bearing end cover seal, and some embodiments of the present disclosure can improve the waterproof performance of the reducer.

[0018] Optionally, the reducer includes a first sealing ring. The first sealing ring is located between the bearing end cover and the housing, and is at least partially located in the second groove. The second groove is provided on at least one of the bearing end cover and the housing. The first sealing ring is interference fit with the second groove. In the reducer of the present disclosure, the gap between the bearing end cover and the housing is sealed by the first sealing ring, and some embodiments of the present disclosure can improve the waterproof performance of the reducer.

[0019] According to some other embodiments of the present disclosure, a driving device is provided, comprising the above-mentioned reducer and a motor. The motor comprises a motor output shaft. The second end of the worm is connected to the motor output shaft of the motor. The second end of the worm comprises a fourth mounting hole. One end of the motor output shaft is disposed in the fourth mounting hole of the worm. In the driving device, the shape of the end of the motor output shaft and the fourth mounting hole of the worm is configured to limit the rotation of the motor output shaft relative to the worm. In the driving device of the present disclosure, by mounting the worm bearings on the same housing, some embodiments of the present disclosure can improve the coaxiality of the worm bearings and make the rotation of the worm more stable.

[0020] Optionally, the fourth mounting hole includes an avoidance portion. In the drive device of the present disclosure, by providing the avoidance portion, some embodiments of the present disclosure can more conveniently mount the motor output shaft on the worm.

[0021] Optionally, the drive device includes a second sealing ring. The second sealing ring is located between the housing and the motor, and is at least partially located in the third groove. The third groove is provided on at least one of the housing and the motor. The second sealing ring is interference fit with the third groove. In the reducer of the present disclosure, the gap between the housing and the motor is sealed by the second sealing ring, and some embodiments of the present disclosure can improve the waterproof performance of the drive device.

[0022] According to some other embodiments of the present disclosure, a laser radar cleaning system is provided, comprising the above-mentioned drive device and a wiping unit. The drive device drives the wiping unit. In the structure of the laser radar cleaning system of the present disclosure, by installing the worm bearing on the same housing, some embodiments of the present disclosure can improve the coaxiality of the worm bearing, make the drive of the wiping unit more stable, and improve the cleaning effect.

[0023] According to another embodiment of the present disclosure, a laser radar is provided, comprising the above-mentioned laser radar cleaning system.

[0024] Through the above-mentioned reducer structure, some embodiments of the present disclosure do not need to install additional positioning parts such as washers in the reducer, so as to position the worm wheel, worm, and bearing, thereby further miniaturizing the reducer, reducing costs, and reducing the difficulties and time costs that may arise when installing the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 A perspective view of a reducer according to some embodiments of the present disclosure is shown;

[0027] Figure 2 shows a perspective view of a drive device according to some embodiments of the present disclosure;

[0028] Figure 3 A cross-sectional view of a reducer according to some embodiments of the present disclosure is shown;

[0029] Figure 4 The reducer according to some embodiments of the present disclosure is shown. Figure 3 Sectional view in the direction of arrow AA;

[0030] Figure 5 A cross-sectional view of a housing of a reducer according to some embodiments of the present disclosure is shown;

[0031] Figure 6 A side view of a reducer according to some embodiments of the present disclosure is shown;

[0032] Figure 7 A cross-sectional view of a housing of a reducer according to some embodiments of the present disclosure is shown;

[0033] Figure 8 A cross-sectional view of a worm gear of a speed reducer according to some embodiments of the present disclosure is shown;

[0034] Fig. 9 A cross-sectional view of a worm gear of a speed reducer according to some embodiments of the present disclosure is shown;

[0035] Fig.10 A cross-sectional view of a bearing end cover of a reducer according to some embodiments of the present disclosure is shown;

[0036] Fig.11 A cross-sectional view of a reducer according to other embodiments of the present disclosure is shown;

[0037] Fig.12 A cross-sectional view of a housing of a reducer according to other embodiments of the present disclosure is shown;

[0038] Fig.13 A cross-sectional view of a bearing end cover of a reducer according to other embodiments of the present disclosure is shown;

[0039] Fig.14 shows a cross-sectional view of a driving device according to other embodiments of the present disclosure;

[0040] Fig.15 shows a cross-sectional view of a driving device according to other embodiments of the present disclosure;

[0041] Fig.16 A perspective view of a driving device according to some other embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0042] The specific implementation methods of the present disclosure will be described below. It should be noted that in the specific description of these implementation methods, in order to provide a concise description, it is impossible for this specification to provide a detailed description of all the features of the actual implementation methods. It should be understood that in the actual implementation of any implementation method, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one implementation method to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by the present disclosure, some changes in design, manufacturing or production based on the technical content disclosed in the present disclosure are just conventional technical means, and should not be understood as insufficient content of the present disclosure.

[0043] Unless otherwise defined, the technical terms or scientific terms used in the claims and the specification shall have the usual meanings understood by persons with ordinary skills in the technical field to which the present disclosure belongs. The words "first", "second" and similar words used in the patent application specification and the claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "one" do not indicate a quantitative limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalent elements, and do not exclude other elements or objects. Words such as "connect", "couple" or "connected" and similar words are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0044] In the present disclosure, unless otherwise specified, all embodiments and optional embodiments mentioned herein can be combined with each other to form a new technical solution. In the present disclosure, unless otherwise specified, all technical features and optional features mentioned herein can be combined with each other to form a new technical solution.

[0045] In the description of the embodiments of the present disclosure, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, a and / or b can represent: a exists alone, a and b exist at the same time, and b exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The reducer, drive device and lidar cleaning system provided according to some embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0047] The present disclosure proposes a reducer, comprising: a housing, a worm, a turbine, a first worm bearing and a second worm bearing. The worm wheel is connected to the worm. The first end of the worm is mounted on the housing via a first worm bearing. The second end of the worm is mounted on the housing via a second worm bearing. The structure of the reducer of the present disclosure improves the coaxiality of the worm and the bearing, and makes the rotation of the worm more stable by mounting the first end of the worm on the housing via the first worm bearing and the second end of the worm on the housing via the second worm bearing.

[0048] See also Figures 1 to 3 , Figure 1 shows a perspective view of a reducer 100a according to some embodiments of the present disclosure; Figure 2 shows a perspective view of a drive device according to some embodiments of the present disclosure; Figure 3 A cross-sectional view of a speed reducer 100 a according to some embodiments of the present disclosure is shown.

[0049] like Figure 1 As shown, the reducer 100a includes a housing 3a for accommodating the reducer 100a. In some embodiments, the housing 3a may include a cover 35 and a box body 36.

[0050] like Figure 2 , Figure 3 , Figure 4As shown, the reducer 100a may also include a worm 1, a worm wheel 2, a first worm bearing 13 and a second worm bearing 14. The worm wheel 2 may be connected to the worm 1, for example, by a helical tooth meshing connection. The worm 1 includes a first end 18 and a second end 19, and the first end 18 of the worm 1 may be mounted on the housing 3a via the first worm bearing 13, for example, on a wall on one side of the housing 3a. The second end 19 of the worm 1 is used to connect to the motor output shaft, and may be mounted on the housing 3a via the second worm bearing 14, for example, on a wall on the other side of the housing 3a.

[0051] In the speed reducer 100a of the present disclosure, one end of the worm 1 is mounted on the housing 3a via the first worm bearing 13, and the other end is mounted on the housing 3a via the second worm bearing 14, so that the coaxiality of the worm bearings can be improved.

[0052] See also Figures 4 to 9 . Figure 4 The reducer 100a according to some embodiments of the present disclosure is shown along Figure 3 Sectional view in the direction of arrow AA; Figure 5 A cross-sectional view of a housing of a reducer 100a according to some embodiments of the present disclosure is shown; Figure 6 shows a side view of a reducer 100a according to some embodiments of the present disclosure;

[0053] Figure 7 A cross-sectional view of a housing 3a of a reducer 100a according to some embodiments of the present disclosure is shown; Figure 8 A cross-sectional view of a worm 1 of a speed reducer 100a according to some embodiments of the present disclosure is shown; Fig. 9 A cross-sectional view of a worm gear 2 of a speed reducer 100 a according to some embodiments of the present disclosure is shown.

[0054] In some embodiments of the present disclosure, the reducer 100 a may further include a first worm gear bearing 23 and a second worm gear bearing 24 .

[0055] like Figure 5 As shown, the housing 3 a includes a first housing step surface 31 .

[0056] like Figure 7 As shown, the housing 3 a includes a second housing step surface 32 .

[0057] like Figure 8 As shown, the worm 1 comprises a first worm step surface 11 and a second worm step surface 12 .

[0058] like Fig. 9 As shown, the worm wheel 2 includes a first worm wheel step surface 21 and a second worm wheel step surface 22. The worm wheel 2 includes a first end 26 and a second end 27. Figure 4As shown, a first end 26 of the worm wheel 2 is mounted on the housing 3 a , and a second end 27 of the worm wheel 2 protrudes out of the housing 3 a .

[0059] like Figure 3 As shown, one end face of the first worm bearing 13 abuts against the first worm step face 11, and the other end face abuts against the first housing step face 31. The first worm bearing 13 can be limited between the first worm step face 11 and the first housing step face 31, and one end face of the second worm bearing 14 abuts against the second worm step face 12. Figure 4 As shown, the first worm wheel bearing 23 is limited between the first worm wheel step surface 21 and the second housing step surface 32 , and one end surface of the second worm wheel bearing 24 abuts against the second worm wheel step surface 22 .

[0060] By replacing the positioning piece with a step surface to position the worm, worm wheel and bearing, some embodiments of the present disclosure reduce the difficulty of assembly and can also make the structure of the reducer more compact.

[0061] During assembly, the first worm bearing 13 can be sleeved onto the worm 1 first, and then the first worm bearing 13 and the worm 1 can be pushed into the housing 3 a as a whole to fix the first worm bearing 13 .

[0062] In some embodiments of the present disclosure, Figure 3 , Figure 5 As shown, the housing 3 a may include a first mounting hole 33 formed on a wall of the housing 3 a close to the second end 19 of the worm 1 .

[0063] In some embodiments of the present disclosure, Figure 4 , Figure 7 As shown, the housing 3 a includes a second mounting hole 34 . The second mounting hole 34 is formed on a wall of the housing 3 a close to the second end 27 of the worm gear 2 . The second end 27 of the worm gear 2 passes through the second mounting hole 34 .

[0064] In some embodiments of the present disclosure, Figure 4 , Fig.10 As shown, the reducer 100a further includes a bearing end cover 4a, which is mounted on the outer side of the second end 27 of the housing 3a close to the worm wheel 2 along the axial direction of the worm wheel 2 and partially covers the second mounting hole 34. The bearing end cover 4a includes a third mounting hole 41, and the second end 27 of the worm wheel 2 passes through the third mounting hole 41. The second end 27 of the worm wheel 2 can serve as an output shaft of the worm wheel and is connected to a wiping portion (e.g., a wiper) for wiping the surface of the laser radar cover, so that the wiping portion is driven to rotate when the worm wheel 2 rotates.

[0065] In some embodiments of the present disclosure, the bearing end cover 4a may be fixed to the housing 3a by means of locating pins or screws.

[0066] like Figure 4 As shown, the bearing end cover 4a includes at least one positioning hole, and the surface of the housing 3a opposite to the bearing end cover 4a includes at least one positioning hole. The at least one positioning hole of the bearing end cover 4a is connected to the at least one positioning hole of the housing 3a via screws, so as to fix the bearing end cover 4a to the housing 3a. In some embodiments of the present disclosure, such as Figure 4 , Figure 7 As shown, the first end 26 of the worm wheel 2 is mounted on the wall of one side of the housing 3a via the first worm wheel bearing 23, and the second end 27 of the worm wheel 2 is mounted on the wall of the other side of the housing 3a via the second worm wheel bearing 24, and the second worm wheel bearing 24 is located in the second mounting hole 34. The structure of the reducer disclosed in the present invention can improve the coaxiality of the worm wheel bearing by mounting the worm wheel bearing on the same housing, so that the worm wheel can rotate more stably.

[0067] In some embodiments of the present disclosure, a portion of the second worm gear bearing 24 is located in the second mounting hole 34, and another portion of the second worm gear bearing 24 is located outside the second mounting hole 34, for example, Figure 4 The right end of the second worm gear bearing 24 can extend out of the second mounting hole 34 .

[0068] like Figure 4 , Fig. 9 , Fig.10 As shown, the bearing end cover 4a includes a protrusion 42 protruding toward the housing 3a side along the axial direction of the worm wheel 2. One end face of the second worm wheel bearing 24 abuts against the protrusion 42, and the other end face abuts against the second worm wheel step surface 22. The second worm wheel bearing 24 is limited between the end face of the protrusion 42 and the second worm wheel step surface 22. The worm wheel bearing is positioned by the above-mentioned protrusion and worm wheel step surface, making the structure of the reducer more compact. The reducer disclosed in the present invention can position the worm wheel and the bearing without additional positioning members, making the structure of the reducer more compact.

[0069] During assembly, the first worm gear bearing 23 can be sleeved onto the worm wheel 2 first, and then the first worm gear bearing 23 and the worm wheel 2 can be pushed into the housing 3a as a whole to fix the first worm gear bearing 23.

[0070] In some embodiments of the present disclosure, the reducer 100a may optionally include a sealing strip 51, which is located between the cover 35 and the box body 36. In an optional embodiment, a groove structure for accommodating the sealing strip 51 may be provided. Figure 7 As shown, the first groove 61 may be provided on both the cover 35 and the box body 36. In other embodiments, the first groove 61 may be provided on only one of the cover 35 and the box body 36. Figure 6As shown, the sealing strip 51 is at least partially located in the first groove 61, and the sealing strip 51 is interference fit with the first groove 61. In some embodiments, a portion of the sealing strip 51 may be located between the cover 35 and the box body 36, and a portion of the sealing strip 51 may be located in the first groove 61. The reducer of the present disclosure seals the gap between the cover and the box body through the sealing strip, which can improve the waterproof performance of the reducer.

[0071] In some embodiments of the present disclosure, Figure 6 As shown, the box body 36 may include at least one positioning hole 363 , and the cover 35 may include at least one positioning hole 365 . The at least one positioning hole 363 of the box body 36 and the at least one positioning hole 365 of the cover 35 are connected via a positioning pin 361 , thereby fixing the box body 36 to the cover 35 .

[0072] In some embodiments of the present disclosure, the box body 36 includes at least one positioning hole 363, and the cover 35 includes at least one positioning pin 361, and the box body 36 is fixed to the cover 35 by setting the positioning pin 361 in the positioning hole. In other embodiments, the cover 35 may include a positioning hole, and the box body 36 may include a positioning pin, and the box body 36 is fixed to the cover 35 by setting the positioning pin in the positioning hole.

[0073] In other embodiments of the present disclosure, Figure 1 As shown, the box body 36 and the cover 35 can be fixed together by screws 362.

[0074] In some other embodiments of the present disclosure, the housing of the reducer 100b may be formed as an integral component, for example, the cover and the housing are integrally formed, and no additional seals and fixings are required.

[0075] See also Figure 11-13 , Fig.11 shows a cross-sectional view of a reducer 100b according to other embodiments of the present disclosure; Fig.12 A cross-sectional view of a housing 3b of a reducer 100b according to other embodiments of the present disclosure is shown; Fig.13 The cross-sectional view of the bearing end cover 4b of the reducer 100b according to other embodiments of the present disclosure is shown. Only the differences between the reducer 100b and the reducer 100a are described below, and the same components of the reducer 100b and the reducer 100a are marked with the same reference numerals and the description is omitted.

[0076] like Fig.11 As shown, the housing 3b of the reducer 100b can be formed as an integrated component, which can simplify the manufacturing and assembly process of the reducer.

[0077] In some embodiments, the first end 26 of the worm wheel 2 is mounted on a wall of one side of the housing 3b via a first worm wheel bearing 23, and the second end of the worm wheel 2 is mounted on the bearing end cover 4b via a second worm wheel bearing 24. Fig.11 , Fig.13 As shown, the third mounting hole 41 includes a hole step surface 411, the second worm gear bearing 24 is located in the third mounting hole 41, and the second worm gear bearing 24 is limited between the second worm gear step surface 22 and the hole step surface 411. With the above structure of the reducer, the worm wheel and the worm gear bearing can be positioned without an additional washer, making the structure of the reducer more compact.

[0078] Compared with the existing reducer, the structure of the reducer disclosed in the present invention is more compact by replacing the positioning piece with a step surface.

[0079] In some embodiments of the present disclosure, Figure 5 As shown, a groove 37 is provided on the inner wall of the housing 3a.

[0080] like Figure 3 As shown, the reducer 100 a may further include: a retaining ring 15 , wherein the retaining ring 15 is partially located in a groove 37 on the inner wall of the housing 3 a , and the second worm bearing 14 is limited between the second worm step surface 12 and the retaining ring 15 .

[0081] During assembly, the second worm bearing 14 can be sleeved onto the worm 1 , and the second worm bearing 14 and the worm 1 can be pushed into the housing 3 a as a whole to fix the second worm bearing 14 .

[0082] In some embodiments of the present disclosure, Fig.15 As shown, the housing 3a can also include a threaded pressing ring 17 to replace the retaining ring 15. The inner side of the first mounting hole 33 includes a thread. The threaded pressing ring 17 cooperates with the thread on the inner side of the first mounting hole 33. The second worm bearing 14 is limited between the second worm step surface 12 and the threaded pressing ring 17.

[0083] During assembly, the second worm bearing 14 can be firstly sleeved on the worm 1, and then the second worm bearing 14 and the worm 1 can be pushed into the housing 3a as a whole to fix the second worm bearing 14.

[0084] The structure of the reducer disclosed in the present invention uses a worm step surface and a threaded pressure ring instead of a positioning piece to position the worm and the bearing, thereby making the structure of the reducer more compact.

[0085] In some embodiments of the present disclosure, Figure 4As shown, optionally, the reducer 100a may also include: a bearing end cover seal 25, which may be an O-ring formed of a flexible material (e.g., rubber or silicone), and is located between the inner side of the bearing end cover 4a and the other end face of the second worm gear bearing 24, and the bearing end cover seal 25 abuts against the output shaft of the worm gear 2 at the second end. The sealing contact force is maintained by causing the bearing end cover seal 25 sandwiched between the bearing end cover 4a and the second worm gear bearing 24 to produce axial extrusion deformation, thereby improving the sealing during the rotation process. The gap between the bearing end cover 4a and the second worm gear bearing 24 is sealed by the bearing end cover seal 25, thereby improving the waterproof performance of the reducer.

[0086] In some embodiments of the present disclosure, Figure 4 As shown, optionally, the reducer 100a may include a first sealing ring 71, which is located between the bearing end cover 4a and the housing 3a. The second groove 62 is provided on both the bearing end cover 4a and the housing 3a. In other embodiments, the second groove 62 may also be provided on either the bearing end cover 4a or the housing 3a. The first sealing ring 71 is at least partially located in the second groove 62, and the first sealing ring 71 and the second groove 62 are interference fit. The gap between the bearing end cover 4a and the housing 3a is sealed by the first sealing ring 71, so that the waterproof performance of the reducer can be improved.

[0087] According to other embodiments of the present disclosure, a driving device is also provided.

[0088] Reference Figures 14 to 16 . Fig.14 shows a cross-sectional view of a driving device according to other embodiments of the present disclosure; Fig.15 shows a cross-sectional view of a driving device according to other embodiments of the present disclosure; Fig.16 A perspective view of a driving device according to some other embodiments of the present disclosure is shown.

[0089] like Figures 14 to 16 As shown, the driving device includes a reducer (for example, the aforementioned reducer 100a or 100b) and a motor 200. The motor 200 includes a motor output shaft 201, and the second end 19 of the worm 1 is connected to the motor output shaft 201 of the motor 200. The motor 200 is started to rotate the motor output shaft 201, and when the motor output shaft 201 rotates, the worm 1 is driven to rotate, and through the meshing of the worm 1 and the worm wheel 2, when the worm 1 rotates, the worm wheel 2 is driven to rotate, and when the worm wheel 2 rotates, the wiping portion is driven to rotate.

[0090] like Figure 6 , Figure 8As shown, the second end 19 of the worm 1 includes a fourth mounting hole 16, and one end of the motor output shaft 201 is disposed in the fourth mounting hole 16 of the worm 1. In some embodiments, the shape of the end of the motor output shaft 201 and the fourth mounting hole 16 of the worm 1 can be configured to limit the rotation of the motor output shaft 201 relative to the worm 1. For example, the shape of the end of the motor output shaft 201 and the fourth mounting hole 16 of the worm 1 can also be a triangle, a quadrilateral, a pentagon, a star, a D-shape, or the like.

[0091] like Figure 6 As shown, the fourth mounting hole 16 may include two avoidance portions 161 to facilitate the motor output shaft 201 to be inserted into the fourth mounting hole 16. In other embodiments, the fourth mounting hole may include a greater or lesser number of avoidance portions.

[0092] The drive device disclosed in the present invention can improve the coaxiality of the worm bearing by installing the worm bearing on the same housing, so that the worm can rotate more stably. The drive device disclosed in the present invention can position the worm, worm wheel, worm bearing, and worm wheel bearing without additional positioning parts such as washers by replacing the positioning parts with a step surface, so that the structure of the reducer is more compact.

[0093] like Figure 3 As shown, optionally, the drive device may include a second sealing ring 72, which is located between the housing 3a, 3b and the motor 200. The third groove 63 may be provided on the housing 3a, 3b and the motor 200. In other embodiments, the third groove 63 may be provided only on any one of the housing 3a, 3b and the motor 200. The second sealing ring 72 is at least partially located in the third groove 63, and the second sealing ring 72 and the third groove 63 are interference fit. The gap between the housing 3a and the motor 200 is sealed by the second sealing ring 72, so that the waterproof performance of the reducer can be improved.

[0094] like Figure 2 , 3 As shown, the reducer and the motor can be fixed together by screws 364. For example, the motor 200 may include at least one positioning hole, and the surface of the housing 3a opposite to the motor 200 includes at least one positioning hole, and the at least one positioning hole of the motor 200 and the at least one positioning hole of the housing 3a are connected via screws 364, so that the motor 200 is fixed to the housing 3a.

[0095] According to another embodiment of the present disclosure, a laser radar cleaning system is also proposed, comprising the above-mentioned driving device; and a wiping part, the wiping part is used to wipe the surface of the laser radar cover, and the wiping part is driven by the driving device. The structure of the laser radar cleaning system disclosed in the present disclosure can improve the coaxiality of the worm bearing by installing the worm bearing on the same housing, making the driving of the wiping part more stable and improving the cleaning effect.

[0096] In addition, the structure of the laser radar cleaning system disclosed in the present invention uses a step surface instead of a positioning piece, and the worm, worm wheel, worm bearing, and worm wheel bearing can be positioned without additional washers, thereby reducing the difficulty of assembly and making the structure of the reducer more compact, thereby helping to reduce the size of the laser radar cleaning system.

[0097] According to other embodiments of the present disclosure, a laser radar is also proposed, which includes the above-mentioned laser radar cleaning system. The laser radar of the present disclosure stabilizes the rotation of the worm of the vehicle-mounted reducer by installing the worm bearing on the same housing, thereby making the drive of the wiping part more stable and improving the cleaning effect.

[0098] So far, the reducer, drive device and laser radar cleaning system according to the embodiments of the present disclosure are described. The market has increasingly higher requirements for the stability of the rotation of the worm of the vehicle-mounted reducer. The present disclosure provides a reducer, drive device and laser radar cleaning system to stabilize the rotation of the worm of the vehicle-mounted reducer.

[0099] It should be understood that the above description is illustrative and not restrictive. For example, the above embodiments (and / or their various aspects) can be used in combination with each other. In addition, without departing from the scope of the present disclosure, many modifications can be made to adapt specific conditions or materials to the teachings of the various embodiments of the present disclosure. Although the size and type of the material described herein are used to define the parameters of the various embodiments of the present disclosure, the various embodiments are not meant to be restrictive, but exemplary embodiments. In reading the above description, many other embodiments are obvious to those skilled in the art. Therefore, the scope of the various embodiments of the present disclosure should be determined with reference to the attached claims, and the full range of equivalent forms claimed by these claims.

[0100] Description of symbols

[0101] 1 worm,

[0102] 2 worm gears,

[0103] 3a, 3b housing,

[0104] 4a, 4b bearing end caps,

[0105] 11 First worm step surface,

[0106] 12 Second worm step surface,

[0107] 13 First worm bearing,

[0108] 14 Second worm bearing,

[0109] 15 retaining ring,

[0110] 16 Fourth mounting hole,

[0111] 161 Avoidance Department,

[0112] 17 Threaded retaining ring,

[0113] 18 first end,

[0114] 19 The second end,

[0115] 21 First worm gear step surface,

[0116] 22 Second worm gear step surface,

[0117] 23 First worm gear bearing,

[0118] 24 Second worm gear bearing,

[0119] 25 Bearing cover seal,

[0120] 26 first end portion,

[0121] 27 The second end,

[0122] 31 first shell step surface,

[0123] 32 second shell step surface,

[0124] 33 First mounting hole,

[0125] 34 Second mounting hole,

[0126] 35 cover,

[0127] 36 cabinet,

[0128] 361 Dowel pin,

[0129] 362 screws,

[0130] 363 positioning holes,

[0131] 365 positioning holes,

[0132] 364 screws,

[0133] 37 grooves,

[0134] 41 The third mounting hole,

[0135] 411 hole step surface,

[0136] 42 raised portion,

[0137] 51 Sealing strip,

[0138] 61 First Groove,

[0139] 62 Second groove,

[0140] 63 Third Groove,

[0141] 71 First sealing ring,

[0142] 72 Second sealing ring,

[0143] 100a, 100b reducer,

[0144] 200 motors,

[0145] 201 Motor output shaft.

Claims

1. A reducer, characterized in that: include: case; Worm; a worm wheel connected to the worm; a first worm bearing, a first end of the worm being mounted on the housing via the first worm bearing; and A second worm bearing, the second end of the worm is mounted on the housing via the second worm bearing.

2. The reducer according to claim 1, characterized in that: The reducer further includes a first worm gear bearing and a second worm gear bearing, The housing comprises a first housing step surface and a second housing step surface, The worm comprises a first worm step surface and a second worm step surface, The worm wheel comprises a first worm wheel step surface and a second worm wheel step surface, The first worm bearing is limited between the first worm step surface and the first housing step surface. The first worm wheel bearing is limited between the first worm wheel step surface and the second housing step surface. One end surface of the second worm bearing abuts against the second worm step surface. One end surface of the second worm wheel bearing abuts against the second worm wheel step surface.

3. The reducer according to claim 2, characterized in that: The housing comprises a first mounting hole and a second mounting hole, wherein the first mounting hole is formed on a wall of the housing close to the second end of the worm. The second mounting hole is formed on a wall of the housing close to the second end of the worm wheel, and the second end of the worm wheel passes through the second mounting hole. The reducer also includes a bearing end cover, which is installed on the outside of the housing and partially covers the second mounting hole. The bearing end cover includes a third mounting hole, and the second end of the worm gear passes through the third mounting hole.

4. The reducer according to claim 3, characterized in that: The first end of the worm wheel is mounted on the housing via the first worm wheel bearing, The second end of the worm wheel is mounted on the housing via the second worm wheel bearing, The second worm gear bearing is located in the second mounting hole, The bearing end cover includes a protrusion protruding toward the housing side along the axial direction of the worm wheel, The second worm wheel bearing is limited between the end surface of the protrusion and the second worm wheel step surface.

5. The reducer according to claim 4, characterized in that: The housing comprises a cover and a box body. The reducer includes a sealing strip, which is at least partially located between the cover and the box body and at least partially located in a first groove, which is provided on at least one of the cover and the box body, and the sealing strip is interference-fitted with the first groove.

6. The reducer according to claim 5, characterized in that: The box body comprises at least one positioning hole, The cover comprises at least one positioning hole, The at least one positioning hole of the box body is connected to the at least one positioning hole of the cover via a positioning pin.

7. The reducer according to claim 5, characterized in that: One of the box body and the cover comprises at least one positioning hole, The other of the box and the cover comprises at least one positioning pin, The positioning pin is disposed in the positioning hole.

8. The reducer according to claim 3, characterized in that: The first end of the worm wheel is mounted on the housing via the first worm wheel bearing, The second end of the worm wheel is mounted on the bearing end cover via the second worm wheel bearing, The third mounting hole comprises a hole step surface, The second worm gear bearing is located in the third mounting hole, The second worm gear bearing is constrained between the second worm gear step surface and the hole step surface.

9. The reducer according to claim 3, characterized in that: Also includes: a retaining ring, the retaining ring being located on the inner side wall of the housing, The second worm bearing is limited between the second worm step surface and the retaining ring.

10. The reducer according to claim 3, characterized in that: The housing further comprises a threaded pressing ring, The inner side of the first mounting hole includes a thread, the thread pressing ring cooperates with the thread of the first mounting hole, and the second worm bearing is limited between the second worm step surface and the thread pressing ring.

11. The reducer according to claim 3, characterized in that: Also includes: A bearing end cover seal is located between the inner side surface of the bearing end cover and the other end surface of the second worm gear bearing and abuts against the second end of the worm gear.

12. The reducer according to claim 3, characterized in that: The reducer includes a first sealing ring, which is located between the bearing end cover and the housing and at least partially located in a second groove. The second groove is arranged on at least one of the bearing end cover and the housing, and the first sealing ring is interference fit with the second groove.

13. A driving device, characterized in that: include: The reducer according to any one of claims 3 to 12; a motor, the motor comprising a motor output shaft, the second end of the worm being connected to the motor output shaft of the motor, The second end of the worm comprises a fourth mounting hole, One end of the motor output shaft is disposed in the fourth mounting hole of the worm.

14. The driving device according to claim 13, characterized in that: The shapes of the end of the motor output shaft and the fourth mounting hole of the worm are configured to limit the motor output shaft from rotating relative to the worm.

15. The driving device according to claim 13, characterized in that: The fourth mounting hole includes an avoidance portion.

16. The driving device according to claim 13, characterized in that: A second sealing ring is included, which is located between the housing and the motor and at least partially located in a third groove. The third groove is provided on at least one of the housing and the motor, and the second sealing ring is interference fit with the third groove.

17. A laser radar cleaning system, characterized in that: comprising a driving device as claimed in any one of claims 13 to 16; as well as Wiping department, The driving device drives the wiping part.

18. A laser radar, characterized in that: Comprising a laser radar cleaning system as described in claim 17.

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