Waterproof push rod motor

Abstract

The utility model provides a waterproof push rod motor. The waterproof push rod motor comprises a shell part, a push rod part, a power part and a plurality of sealing parts, the shell part comprises an outer pipe, a front end cover and a rear end cover. The front end cover and the rear end cover are arranged at the two ends of the outer pipe in a sealed mode respectively. The push rod piece movably penetrates through the front end cover, one end of the push rod piece is located in the outer pipe, and the other end of the push rod piece penetrates through the front end cover and then extends out of the outer pipe. The power piece comprises a sealing shell, a driving body and a speed reduction transmission body, the driving body and the speed reduction transmission body are arranged in the sealing shell, the sealing shell is arranged in the outer pipe, one end of the sealing shell is connected with the rear end cover, the driving end of the driving body is connected with the speed reduction transmission body, and an output shaft of the speed reduction transmission body penetrates through the other end of the sealing shell and then is connected with one end of the push rod piece. The sealing piece is sealed between the push rod piece and the front end cover. Through the arrangement of the sealing shell, a second waterproof structure is formed in the outer pipe, water is prevented from flowing to the motor, the circuit board and the speed reducer in the outer pipe, and the risk of machine damage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof motors, and particularly to a waterproof push rod motor. Background Art

[0002] A push rod motor is a power-driven device that converts the rotary motion of an electric motor into the linear reciprocating motion of a push rod. It can be used as an actuator in various simple or complex technological processes to achieve remote control, centralized control or automatic control, and has now been widely used in many fields.

[0003] A push rod motor generally includes a housing, a push rod, a reduction gear set and a motor. If the push rod motor needs to be applied outdoors, the push rod motor should have a certain waterproof and sealing performance. The existing push rod motors often achieve the waterproof effect by sealing the two end covers of the housing. However, since the push rod is a movable part, after repeated linear motion for a long time, the sealing ring between the push rod and the front end cover often fails to seal, resulting in water flowing into the interior of the push rod motor housing from the sealing failure area, thereby causing damage to components such as the reduction gear set and the motor located inside the housing, increasing the failure rate of the push rod motor. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the present application provides a waterproof push rod motor.

[0005] A waterproof push rod motor disclosed in the present application includes: a housing member, a push rod member, a power member and a plurality of sealing members; the housing member includes an outer tube, a front end cover and a rear end cover, and the front end cover and the rear end cover are respectively and sealingly disposed at both ends of the outer tube; the push rod member movably passes through the front end cover, and one end of the push rod member is located inside the outer tube, and the other end of the push rod member extends out of the outer tube after passing through the front end cover; the power member includes a sealing housing and a driving body and a reduction transmission body respectively disposed inside the sealing housing, the sealing housing is disposed inside the outer tube, and one end of the sealing housing is connected to the rear end cover, the driving end of the driving body is connected to the reduction transmission body, and the output shaft of the reduction transmission body passes through the other end of the sealing housing and is connected to one end of the push rod member; the sealing member is sealed between the push rod member and the front end cover.

[0006] Preferably, the power member further includes a fixed housing and a rotating transmission body rotatably disposed inside the fixed housing, one end of the fixed housing is sealingly connected to the other end of the sealing housing, and the fixed housing is connected to the reduction transmission body; the output shaft passes through the sealing housing and is connected to one end of the rotating transmission body, and one end of the push rod member passes through the other end of the fixed housing and is connected to the other end of the rotating transmission body.

[0007] Preferably, a first thread is annularly provided on the inner wall of the other end of the sealing housing, and a second thread is provided at a position corresponding to the first thread on the outer wall of the fixed housing, and the first thread and the second thread are screwed together so that the sealing housing and the fixed housing are fixedly connected.

[0008] Preferably, a limiting block is provided at one end of the fixed housing, a limiting groove is formed at the position of the end face of the speed reduction transmission body corresponding to the limiting block, and the limiting block extends into the limiting groove, so that the fixed housing restricts the rotation of the speed reduction transmission body.

[0009] Preferably, the waterproof push rod motor further includes a limiting seal, and the limiting seal is hermetically arranged between the end face of the speed reduction transmission body and the fixed housing.

[0010] Preferably, a bearing is provided between the speed reduction transmission body and the output shaft, annular grooves are formed on both the inner wall and the outer wall of the bearing, and seals are arranged in each annular groove.

[0011] Preferably, the housing member further includes a waterproof locking portion, the waterproof locking portion penetrates through the rear end cover, a through hole is formed in the waterproof locking portion, the power cord of the driving body extends outward through the through hole and then extends outside the outer tube, and the waterproof locking portion locks the power cord and seals the through hole.

[0012] Preferably, the push rod member includes a lead screw, a nut and a push rod. One end of the lead screw is connected to the output shaft, and the other end is close to the front end cover. The nut is sleeved outside the lead screw. One end of the push rod is connected to the nut, and the other end of the push rod penetrates through the front end cover and then extends outside the outer tube. A seal is hermetically arranged between the push rod and the front end cover.

[0013] Preferably, a third thread is annularly arranged on the outer wall of the rear end cover, a fourth thread is arranged at the position of the inner wall of the outer tube corresponding to the third thread, and the third thread and the fourth thread are screwed together, so that the rear end cover is fixedly connected to the outer tube.

[0014] Preferably, a fifth thread is also annularly arranged on the outer wall of the rear end cover, a sixth thread is arranged at the position of the inner wall of one end of the sealing shell corresponding to the fifth thread, and the fifth thread and the sixth thread are screwed together, so that the rear end cover is fixedly connected to one end of the sealing shell.

[0015] The beneficial effect of the present application is that: since a seal is provided between the push rod member and the front end cover, that is, a first waterproof structure is formed inside the outer tube to prevent water from entering the inside of the outer tube. At the same time, when the first waterproof structure fails, through the arrangement of the sealing shell, the motor, the circuit board and the speed reducer are all arranged inside the sealing shell, and the sealing shell can effectively isolate the water entering the inside of the outer tube, preventing the water from further flowing to the motor, the circuit board and the speed reducer, thereby avoiding the damage of the motor, the circuit board and the speed reducer, that is, a second waterproof structure is formed inside the outer tube, reducing the damage of the motor, the circuit board and the speed reducer caused by water ingress, reducing the risk of machine damage, and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 Schematic structural diagram of the waterproof push rod motor in the embodiment;

[0018] Figure 2 Schematic structural diagram of the waterproof push rod motor after removing the outer tube in the embodiment;

[0019] Figure 3 Cross-sectional view of the waterproof push rod motor in the embodiment;

[0020] Figure 4 For Figure 3 Enlarged view of part A in;

[0021] Figure 5 For Figure 3 Enlarged view of part B in;

[0022] Figure 6 For Figure 3 Enlarged view of part C in;

[0023] Figure 7 Schematic structural diagram of the rear end cover in the embodiment;

[0024] Figure 8 Schematic structural diagram of the outer tube in the embodiment;

[0025] Figure 9 Schematic structural diagram of the front end cover in the embodiment;

[0026] Figure 10 Schematic structural diagram of the push rod part in the embodiment;

[0027] Figure 11 Schematic structural diagram of the fixed shell in the embodiment;

[0028] Figure 12 Another schematic structural diagram of the fixed shell in the embodiment;

[0029] Figure 13 Schematic transmission structure diagram of the waterproof push rod motor in the embodiment;

[0030] Figure 14 Schematic structural diagram of the driving body and the reduction transmission body in the embodiment;

[0031] Figure 15 Schematic structural diagram of the sealing shell in the embodiment;

[0032] Figure 16 Schematic structural diagram of the reduction gearbox in the embodiment;

[0033] Figure 17 Schematic structural diagram of the limit seal in the embodiment;

[0034] Figure 18Schematic structural diagram of the bearing in the embodiment.

[0035] Reference numerals:

[0036] 1. Housing part; 11. Outer tube; 111. Fourth thread; 12. Front end cover; 121. Accommodating groove; 13. Rear end cover; 131. Third thread; 132. Fifth thread; 133. Cover body; 134. Cylinder; 1341. Sealing groove; 14. Waterproof locking part; 141. Through hole; 2. Push rod part; 21. Lead screw; 22. Nut; 23. Push rod; 231. Push rod sleeve; 232. Push rod end; 3. Power part; 31. Sealing shell; 311. First thread; 32. Driving body; 321. Power cord; 322. Motor; 323. Circuit board; 33. Reduction drive body; 331. Output shaft; 332. Limit groove; 333. Ring gear housing; 3331. Threaded hole; 334. Reduction gearbox; 3341. First reduction gear set; 3342. Second reduction gear set; 3343. Third reduction gear set; 335. Bearing; 3351. Annular groove; 34. Fixed shell; 341. Second thread; 342. Limit block; 343. Rotating disc; 35. Rotating drive body; 4. Sealing member; 5. Limit sealing member; 51. Sealing ring; 52. Sealing groove. Detailed implementation manners

[0037] The following will disclose multiple implementation manners of the present application in diagrams. For the sake of clear illustration, many practical details will be described together in the following narration. However, it should be understood that these practical details are not used to limit the present application. That is to say, in some implementation manners of the present application, these practical details are unnecessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0038] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0039] In addition, in this application, descriptions such as "first" and "second" are for descriptive purposes only, and do not particularly refer to the order or sequence. Nor are they used to limit this application. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] To further understand the application content, features and effects of this application, the following embodiments are exemplified and described in detail with reference to the accompanying drawings as follows.

[0041] Refer to Figures 1-3 , Figure 1 which is a schematic structural diagram of the waterproof push rod motor in the embodiment, Figure 2 which is a schematic structural diagram of the waterproof push rod motor after removing the outer tube in the embodiment, Figure 3 which is a cross-sectional view of the waterproof push rod motor in the embodiment. The waterproof push rod motor in this embodiment includes a housing member 1, a push rod member 2, a power member 3 and a plurality of sealing members 4. The housing member 1 includes an outer tube 11, a front end cover 12 and a rear end cover 13. The front end cover 12 and the rear end cover 13 are respectively and sealingly disposed at both ends of the outer tube 11. The push rod member 2 movably passes through the front end cover 12, and one end of the push rod member 2 is located inside the outer tube 11, and the other end of the push rod member 2 extends outward from the outer tube 11 after passing through the front end cover 12. The power member 3 includes a sealing shell 31 and a driving body 32 and a speed reduction transmission body 33 respectively disposed inside the sealing shell 31. The sealing shell 31 is disposed inside the outer tube 11, and one end of the sealing shell 31 is connected to the rear end cover 13. The driving end of the driving body 32 is connected to the speed reduction transmission body 33, and the output shaft 331 of the speed reduction transmission body 33 passes through the other end of the sealing shell 31 and is connected to one end of the push rod member 2. The sealing member 4 is sealed between the push rod member 2 and the front end cover 12.

[0042] Refer to Figures 4-6 , Figure 4 which is Figure 3 an enlarged view of part A in Figure 5 which is Figure 3 an enlarged view of part B in Figure 6 which is Figure 3Enlarged view of part C. In this embodiment, the front end cover 12 and the rear end cover 13 of the waterproof push rod motor are both sealed at both ends of the outer tube 11. Specifically, seals 4 are provided between the outer tube 11 and the front end cover 12, and between the outer tube 11 and the rear end cover 13. Since seals 4 are provided between the push rod member 2 and the front end cover 12, between the outer tube 11 and the front end cover 12, and between the outer tube 11 and the rear end cover 13, that is, a first waterproof structure is formed inside the outer tube 11 to prevent water from entering the inside of the outer tube 11 and thus protect the driving body 32 and the speed reduction transmission body 33 inside. When the first waterproof structure fails, due to the setting of the sealing shell 31, the driving body 32 and the speed reduction transmission body 33 are both arranged inside the sealing shell 31, and the sealing shell 31 can effectively isolate the water entering the inside of the outer tube 11 and prevent the water from flowing further to the driving body 32 and the speed reduction transmission body 33. In this embodiment, the driving body 32 includes a motor 322 and a circuit board 323, and the speed reduction transmission body 33 is a speed reducer, to prevent damage to the motor 322, the circuit board 323 and the speed reducer caused by water ingress, that is, a second waterproof structure is formed inside the outer tube 11 to reduce the damage to the motor 322, the circuit board 323 and the speed reducer caused by water ingress, reduce the risk of machine damage, and extend the service life.

[0043] Refer to together Figures 7-9 , Figure 7 which is a schematic structural view of the rear end cover in the embodiment, Figure 8 which is a schematic structural view of the outer tube in the embodiment, Figure 9FIG. 0 is a schematic structural diagram of the front end cover in the embodiment. Preferably, a third thread 131 is annularly provided on the outer wall of the rear end cover 13, and a fourth thread 111 is provided on the inner wall of the outer tube 11 at a position corresponding to the third thread 131. The third thread 131 and the fourth thread 111 are screwed together, so that the rear end cover 13 is fixedly connected to the outer tube 11. Through the arrangement of the third thread 131 and the fourth thread 111, the rear end cover 13 and the outer tube 11 are screwed and fixed, which is convenient for the installation and disassembly of the rear end cover 13. After disassembly, it is convenient to replace or repair the internal parts of the waterproof push rod motor. Specifically, the rear end cover 13 includes a cover body 133 and a column body 134. The cover body 133 is provided at one end of the column body 134. The third thread 131 is annularly provided on the outer wall of the column body 134. An annular sealing groove 1341 is formed at the connection between the cover body 133 and the column body 134. A sealing member 4 is provided in the sealing groove 1341. Here, the sealing member 4 is a sealing rubber ring. It can be understood that when the rear end cover 13 is screwed and fixed to the outer tube 11, the sealing rubber ring seals the connection between the rear end cover 13 and the outer tube 11. Through the double sealing of screwing and the sealing rubber ring, the rear end cover 13 can be hermetically arranged at one end of the outer tube 11, further improving the sealing effect between the rear end cover 13 and the outer tube 11, so that water cannot easily flow into the outer tube 11 from the connection between the rear end cover 13 and the outer tube 11. The sealing method of the front end cover 12 in this embodiment is similar to that of the rear end cover 13, and both are hermetically arranged at both ends of the outer tube 11 by the cooperation of screwing and the sealing rubber ring, which will not be elaborated here.

[0044] Refer back to Figure 5 , Figures 7-9 , preferably, a fifth thread 132 is also annularly provided on the outer wall of the rear end cover 13. A sixth thread is provided on the inner wall of one end of the sealing shell 31 at a position corresponding to the fifth thread 132. The fifth thread 132 and the sixth thread are screwed together, so that the rear end cover 13 is fixedly connected to one end of the sealing shell 31. In specific application, the outer wall of the end of the column body 134 away from the cover body 133 is annularly provided with a fifth thread 132, and the outer diameter of the column body 134 provided with the fifth thread 132 is smaller than the outer diameter of the column body 134 provided with the third thread 131. That is to say, both the outer tube 11 and the sealing shell 31 are screwed and fixed to the rear end cover 13, and after one end of the sealing shell 31 is screwed and fixed to the rear end cover 13, it also closely adheres to the end face of the column body 134 provided with the third thread 131, improving the sealing effect between the sealing shell 31 and the rear end cover 13.

[0045] Refer back to Figures 7-9, preferably, the housing member 1 further includes a waterproof locking portion 14. The waterproof locking portion 14 is disposed through the rear end cover 13. The waterproof locking portion 14 is provided with a through hole 141. The power cord 321 of the driving body 32 extends outwards of the outer tube 11 after passing through the through hole 141. The waterproof locking portion 14 locks the power cord 321 and seals the through hole 141. In specific application, the rear end cover 13 is provided with a mounting hole. The waterproof locking portion 14 is disposed in the mounting hole. The power cord 321 of the circuit board 323 passes through the sealing case 31, the mounting hole and the through hole 141 in sequence and then extends outwards of the outer tube 11 to connect to an external power source to supply power to the circuit board 323 and the motor 322. The waterproof locking portion 14 locks the power cord 321 and seals the through hole 141, so that water cannot flow into the outer tube 11 from the through hole 141, ensuring the sealing performance of the waterproof push rod motor. Specifically, the waterproof locking portion 14 is a waterproof connector.

[0046] Refer to Figure 9 and Figure 10 , Figure 10It is a schematic structural diagram of the push rod member in the embodiment. Preferably, the push rod member 2 includes a lead screw 21, a nut 22 and a push rod 23. One end of the lead screw 21 is connected to the output shaft 331, and the other end is close to the front end cover 12. The nut 22 is sleeved outside the lead screw 21. One end of the push rod 23 is connected to the nut 22, and the other end of the push rod 23 passes through the front end cover 12 and extends outwardly from the outer tube 11. The seal 4 is hermetically arranged between the push rod 23 and the front end cover 12. In specific applications, the driving end of the motor 322 rotates, and the rotational force is transmitted to the output shaft 331 through the reducer, thereby driving the output shaft 331 to rotate. The rotation of the output shaft 331 drives the lead screw 21 to rotate, and the rotation of the lead screw 21 drives the nut 22 to perform a linear movement along the lead screw 21, thereby driving the push rod 23 to perform a linear movement. Specifically, the front end cover 12 is provided with a push rod through hole, the push rod 23 is inserted into the push rod through hole, and a plurality of annular receiving grooves 121 are spaced apart on the inner wall of the push rod through hole. Each receiving groove 121 is provided with a seal 4. The seal 4 closest to the outside of the outer tube 11 is adapted to the opening shape of the push rod through hole to achieve better sealing of the opening of the push rod through hole. The seals 4 in the remaining receiving grooves 121 are sealing rings. The plurality of seals 4 arranged in the front end cover 12 simultaneously seal the push rod 23 that repeatedly performs linear movement, improving the sealing effect of the push rod 23 and the sealing performance of the waterproof push rod motor. Further, the push rod 23 includes a push rod sleeve 231 and a push rod end 232. Threads are annularly arranged on the inner walls at both ends of the push rod sleeve 231. The nut 22 is connected with a threaded post. One end of the push rod sleeve 231 is sleeved and screwed outside the threaded post, so that the push rod sleeve 231 is fixedly connected to the nut 22. One end of the push rod end 232 is also provided with a threaded post, and the push rod end 232 is screwed and fixed to the other end of the push rod sleeve 231 through the threaded post. A sealing ring is arranged at the screwed joint of the push rod end 232 and the push rod sleeve 231 for sealing the push rod end 232 and the push rod sleeve 231, improving the sealing performance of the push rod end 232 and the push rod sleeve 231. The setting method of this sealing ring is similar to that of the rear end cover 13 and will not be elaborated here.

[0047] Refer to Figures 11-16 , Figure 11 It is a schematic structural diagram of the fixed shell in the embodiment. Figure 12 It is another schematic structural diagram of the fixed shell in the embodiment. Figure 13 It is a schematic transmission structure diagram of the waterproof push rod motor in the embodiment. Figure 14 It is a schematic structural diagram of the driving body and the speed reduction transmission body in the embodiment. Figure 15 It is a schematic structural diagram of the sealing shell in the embodiment. Figure 16FIG. 0 is a schematic structural diagram of a reduction gearbox in an embodiment. Preferably, the power member 3 further includes a fixed housing 34 and a rotating transmission body 35 rotatably disposed within the fixed housing 34. One end of the fixed housing 34 is sealingly connected to the other end of the sealing housing 31, and the fixed housing 34 is connected to the reduction transmission body 33. The output shaft 331 passes through the sealing housing 31 and is connected to one end of the rotating transmission body 35. One end of the push rod member 2 passes through the other end of the fixed housing 34 and is connected to the other end of the rotating transmission body 35. In specific applications, the reduction transmission body 33 includes a ring gear housing 333 and a reduction gearbox 334. An internal gear ring is provided in a circumferential manner in the middle region of the inner wall of the ring gear housing 333. The reduction gearbox 334 in this embodiment is a three-stage reduction, specifically including a first reduction gear set 3341, a second reduction gear set 3342, and a third reduction gear set 3343. The structures of the first reduction gear set 3341, the second reduction gear set 3342, and the third reduction gear set 3343 are similar. Among them, the first reduction gear set 3341 includes a gear frame and three gears. Three rotating columns are provided in a circumferential manner on one end face of the gear frame. A gear is rotatably provided on each rotating column. A driving gear is sleeved outside the output end of the driving body 32. The driving gear is located between the three gears and meshes with the three gears respectively. A gear shaft is provided at the center position of the other end face of the gear frame. The gear shaft of the first reduction gear set 3341 meshes with multiple gears on the second reduction gear set 3342. The gear shaft of the second reduction gear set 3342 meshes with multiple gears on the third reduction gear set 3343. The output shaft 331 is connected to the gear frame of the third reduction gear set 3343 and passes through the ring gear housing 333 for power output. All the gears of the first reduction gear set 3341, the second reduction gear set 3342, and the third reduction gear set 3343 mesh with the internal gear ring. In this way, through the three-stage reduction setting, the transmission of this embodiment has a three-stage reduction effect. Of course, in other embodiments, two-stage, four-stage, or multi-stage reduction gear sets can also be set, and the number of gears on one gear frame is not limited to three, and can also be four or more, which is not limited here. It should be particularly noted that the fixed housing 34 is connected to the ring gear housing 333 to limit the rotation of the ring gear housing 333. Specifically, transmission holes with corresponding shapes are respectively provided at both ends of the rotating transmission body 35 corresponding to the output shaft 331 and the lead screw 21. The output shaft 331 and the lead screw 21 respectively extend into the transmission holes, so that the rotation of the output shaft 331 drives the rotation of the rotating transmission body 35 and the lead screw 21.

[0048] Refer back to Figure 12 and Figure 15, Preferably, a first thread 311 is provided in a ring shape on the inner wall of the other end of the sealing shell 31, and a second thread 341 is provided on the outer wall of the fixed shell 34 at a position corresponding to the first thread 311. The first thread 311 and the second thread 341 are screwed together, so that the sealing shell 31 is fixedly connected to the fixed shell 34. In specific application, a rotating disk 343 is provided at the other end of the fixed shell 34. A thread is provided in a ring shape on the outer ring of the rotating disk 343, and a thread is also provided in a ring shape on the inner wall of the other end of the fixed shell 34, so that the rotating disk 343 can be hermetically screwed to the other end of the fixed shell 34. At the same time, a rotating hole is provided in the center of the rotating disk 343. A rotating block is fixedly sleeved outside the lead screw 21, and the rotating block is rotatably arranged in the rotating hole, and the outer wall of the rotating block fits with the inner wall of the rotating hole.

[0049] Refer back to Figures 12-14 , Preferably, a limiting block 342 is provided at one end of the fixed shell 34, and a limiting groove 332 is provided at the end face of the speed reduction transmission body 33 at a position corresponding to the limiting block 342. The limiting block 342 extends into the limiting groove 332, so that the fixed shell 34 restricts the rotation of the speed reduction transmission body 33. In specific application, the number of the limiting blocks 342 and the limiting grooves 332 is four. After the fixed shell 34 is screwed and connected to the sealing shell 31, the limiting block 342 of the fixed shell 34 extends into the limiting groove 332 of the speed reduction transmission body 33, that is, into the limiting groove 332 of the ring gear housing 333. Since the outer tube 11 and the rear end cover 13 are screwed and fixed, the sealing shell 31 and the rear end cover 13 are screwed and fixed, and the fixed shell 34 and the sealing shell 31 are screwed and fixed. In this way, by the limiting block 342 extending into the limiting groove 332, the fixed shell 34 restricts the rotation of the ring gear housing 333, so as to achieve the effect of fixing the ring gear housing 333, which is convenient for speed reduction transmission through the speed reduction gear set.

[0050] Refer to Figure 17 , Figure 17It is a schematic structural diagram of the limit seal in the embodiment. Preferably, the waterproof push rod motor further includes a limit seal 5, and the limit seal 5 is hermetically arranged between the end face of the speed reduction transmission body 33 and the fixed housing 34. In specific applications, the shape of the limit seal 5 is adapted to the end face of the fixed housing 34, and it is a special-shaped sealing rubber ring. The limit seal 5 includes a sealing ring 51 and four sealing grooves 52 arranged around the sealing ring 51. The limit block 342 extends into the sealing groove 52, and the sealing groove 52 extends into the limit groove 332. The sealing ring 51 is hermetically arranged between the end face of the fixed housing 34 and the end face of the ring gear housing 333. That is, the limit seal 5 completely seals between the fixed housing 34 and the end face of the speed reduction transmission body 33, preventing water from flowing from the fixed housing 34 into the sealing housing 31 or the speed reducer. Further, four threaded holes 3331 are arranged in a ring on the end face of the ring gear housing 333. The sealing ring 51 and the end face of the fixed housing 34 are also provided with threaded holes 3331 corresponding to the positions of the four threaded holes 3331. By sequentially screwing screws into the threaded holes 3331 of the fixed housing 34, the sealing ring 51 and the ring gear housing 333, the ring gear housing 333 is fixedly connected to the fixed housing 34, thereby fixing the ring gear housing 333 in the axial direction.

[0051] Referring to Figure 18 , Figure 18 It is a schematic structural diagram of the bearing in the embodiment. Preferably, a bearing 335 is arranged between the speed reduction transmission body 33 and the output shaft 331. Annular grooves 3351 are provided on both the inner wall and the outer wall of the bearing 335, and a seal 4 is arranged in each annular groove 3351. In specific applications, one end of the output shaft 331 meshes with the gear of the third speed reduction gear set 3343, and the other end passes through the ring gear housing 333 and is connected to the rotating transmission body 35. A bearing 335 is arranged between the output shaft 331 and the ring gear housing 333. It should be particularly noted that the bearing 335 in this embodiment has a certain length, and an annular groove 3351 is provided on its outer wall, and an annular groove 3351 is also provided on its inner wall. A seal 4 is arranged in each annular groove 3351. Here, the seal 4 is a sealing rubber ring. That is to say, since the output shaft 331 needs to rotate, water is likely to flow into the sealing housing 31 between the output shaft 331 and the bearing 335, and between the bearing 335 and the ring gear housing 333 during the rotation of the output shaft 331. The sealing rubber ring on the outer wall of the bearing 335 seals between the bearing 335 and the ring gear housing 333, and the sealing rubber ring on the inner wall of the bearing 335 seals between the bearing 335 and the output shaft 331, so as to ensure that water cannot enter the sealing housing 31 between the output shaft 331 and the ring gear housing 333, improving the waterproof sealing effect in the sealing housing 31. Further, the sealing rubber rings on the limit seal 5 and the bearing 335 have a certain elasticity. In addition to playing a waterproof role, they can also play a buffering and shock-absorbing function, isolating the noise generated during the operation of the motor and achieving a silent effect.

[0052] In summary, since seals 4 are provided between the push rod member 2 and the front end cover 12, between the outer tube 11 and the front end cover 12, and between the outer tube 11 and the rear end cover 13, that is, a first waterproof structure is formed inside the outer tube 11 to prevent water from entering the inside of the outer tube 11, thereby protecting the drive body 32 and the speed reduction transmission body 33 inside it. At the same time, when the first waterproof structure fails, due to the setting of the sealing shell 31, the drive body 32 and the speed reduction transmission body 33 are both arranged inside the sealing shell 31. The sealing shell 31 can effectively isolate the water entering the inside of the outer tube 11 and prevent the water from further flowing to the motor 322, the circuit board 323 and the speed reducer, thereby avoiding the damage of the motor 322, the circuit board 323 and the speed reducer. That is, a second waterproof structure is formed inside the outer tube 11 to reduce the damage of the motor 322, the circuit board 323 and the speed reducer caused by water ingress, reduce the risk of machine damage, and extend the service life.

[0053] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A waterproof push rod motor, characterized in that, Comprising: A housing member (1), which includes an outer tube (11), a front end cover (12) and a rear end cover (13), and the front end cover (12) and the rear end cover (13) are respectively and sealingly arranged at both ends of the outer tube (11); A push rod member (2), which movably passes through the front end cover (12), and one end of the push rod member (2) is located inside the outer tube (11), and the other end of the push rod member (2) extends out of the outer tube (11) after passing through the front end cover (12); A power member (3), which includes a sealing shell (31) and a driving body (32) and a speed reduction transmission body (33) respectively arranged inside the sealing shell (31), the sealing shell (31) is arranged inside the outer tube (11), and one end of the sealing shell (31) is connected to the rear end cover (13), the driving end of the driving body (32) is connected to the speed reduction transmission body (33), and the output shaft (331) of the speed reduction transmission body (33) passes through the other end of the sealing shell (31) and then is connected to one end of the push rod member (2); and A sealing member (4), which is sealed between the push rod member (2) and the front end cover (12).

2. The waterproof push rod motor according to claim 1, characterized in that, The power member (3) further includes a fixed shell (34) and a rotating transmission body (35) rotatably arranged inside the fixed shell (34), one end of the fixed shell (34) is sealingly connected to the other end of the sealing shell (31), and the fixed shell (34) is connected to the speed reduction transmission body (33); the output shaft (331) passes through the sealing shell (31) and then is connected to one end of the rotating transmission body (35), and one end of the push rod member (2) passes through the other end of the fixed shell (34) and then is connected to the other end of the rotating transmission body (35).

3. The waterproof push rod motor according to claim 2, wherein A first thread (311) is annularly arranged on the inner wall of the other end of the sealing shell (31), and a second thread (341) is arranged on the outer wall of the fixed shell (34) corresponding to the position of the first thread (311), and the first thread (311) and the second thread (341) are screwed together, so that the sealing shell (31) is fixedly connected to the fixed shell (34).

4. The waterproof push rod motor according to claim 3, characterized in that, A limiting block (342) is arranged at one end of the fixed shell (34), and a limiting groove (332) is opened at the end face of the speed reduction transmission body (33) corresponding to the position of the limiting block (342), and the limiting block (342) extends into the limiting groove (332), so that the fixed shell (34) restricts the rotation of the speed reduction transmission body (33).

5. The waterproof push rod motor according to claim 4, characterized in that, It further includes a limiting sealing member (5), and the limiting sealing member (5) is sealingly arranged between the end face of the speed reduction transmission body (33) and the fixed shell (34).

6. The waterproof push rod motor according to claim 1, wherein, A bearing (335) is arranged between the speed reduction transmission body (33) and the output shaft (331), and annular grooves (3351) are opened on both the inner wall and the outer wall of the bearing (335), and the sealing member (4) is arranged in each annular groove (3351).

7. The waterproof push rod motor according to claim 1, wherein The housing member (1) further includes a waterproof locking portion (14). The waterproof locking portion (14) passes through the rear end cover (13). The waterproof locking portion (14) is provided with a through hole (141). The power cord (321) of the driving body (32) passes through the through hole (141) and extends outward of the outer tube (11). The waterproof locking portion (14) locks the power cord (321) and seals the through hole (141).

8. The waterproof push rod motor according to claim 1, wherein, The push rod member (2) includes a lead screw (21), a lead nut (22), and a push rod (23). One end of the lead screw (21) is connected to the output shaft (331), and the other end is close to the front end cover (12). The lead nut (22) is sleeved outside the lead screw (21). One end of the push rod (23) is connected to the lead nut (22). The other end of the push rod (23) passes through the front end cover (12) and extends outward of the outer tube (11). The seal (4) is hermetically provided between the push rod (23) and the front end cover (12).

9. The waterproof push rod motor according to claim 1, wherein, The outer wall of the rear end cover (13) is annularly provided with a third thread (131). The inner wall of the outer tube (11) is provided with a fourth thread (111) corresponding to the position of the third thread (131). The third thread (131) and the fourth thread (111) are screwed together, so that the rear end cover (13) is fixedly connected to the outer tube (11).

10. The waterproof push rod motor according to claim 9, characterized in that, The outer wall of the rear end cover (13) is also annularly provided with a fifth thread (132). The inner wall of one end of the sealing shell (31) is provided with a sixth thread corresponding to the position of the fifth thread (132). The fifth thread (132) and the sixth thread are screwed together, so that the rear end cover (13) is fixedly connected to one end of the sealing shell (31).

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