Worm and gear speed reducing motor

Abstract

The utility model discloses a worm and gear speed reducing motor, which comprises a motor, a box body and a transmission assembly, the motor is arranged on the box body, a transmission shaft is arranged on the motor, and a worm is arranged on the transmission shaft in a sleeving manner; a supporting column is arranged in the box body, a lubricating piece is arranged in the middle of the supporting column, the tail end of the transmission shaft extends into the lubricating piece, and the transmission shaft is in sliding connection with the lubricating piece; the transmission assembly comprises a first-stage gear, a second-stage gear and an output gear which are sequentially meshed, and the worm is meshed with the first-stage gear. The supporting columns and the lubricating pieces are arranged in the box body to support the transmission shaft, the stability of the transmission shaft is improved, abrasion of the transmission shaft is reduced through the lubricating pieces, and the service life of the transmission shaft is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of geared motor technology, and in particular to a worm gear reducer motor. Background Technology

[0002] Gear reducers typically reduce the speed of a motor, internal combustion engine, or other high-speed power source by using a small gear on the input shaft of a gear reducer (or gearbox). By employing a multi-stage structure, the rotational speed can be significantly reduced, thereby increasing the output torque of the geared motor. Its core function of "power amplification and speed reduction" is achieved through the use of multiple stages of gear transmission to reduce speed; the reducer itself is composed of various gear pairs.

[0003] When using existing worm gear reducers, the motor is powered on and started. The motor drives the worm to rotate through the drive shaft. The worm meshes with the worm wheel, so the worm wheel rotates under the drive of the worm and outputs power through the output shaft. However, it has been found that the drive shaft of the existing worm gear reducer lacks external support, resulting in poor stability of the drive shaft. This can easily lead to damage to the drive shaft during long-term use, which is detrimental to improving the service life of the reducer. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a worm gear reducer motor to solve the technical problem of poor transmission shaft stability in the prior art.

[0005] This utility model is achieved by the following technical solution: a worm gear reducer motor, comprising a motor, a housing, and a transmission assembly;

[0006] The motor is mounted on the housing, and a drive shaft is provided on the motor, with a worm gear sleeved on the drive shaft;

[0007] The housing is provided with a support column, and a lubricating element is provided in the middle of the support column. The end of the drive shaft extends into the lubricating element, and the drive shaft is slidably connected to the lubricating element.

[0008] The transmission assembly includes a primary gear, a secondary gear, and an output gear that mesh sequentially, and the worm gear meshes with the primary gear.

[0009] In one possible implementation, the support column has a limiting groove in the middle, and the lubricant is disposed in the limiting groove.

[0010] In one possible implementation, the output gear is provided with an output shaft for engaging with an external component.

[0011] In one possible implementation, the housing is provided with a through hole, and both ends of the output shaft are provided with copper sleeves, the copper sleeves abutting against the inner wall of the through hole.

[0012] In one possible implementation, the transmission assembly further includes a first axle and a second axle, wherein the primary gear is rotatably mounted on the first axle and the secondary gear is rotatably mounted on the second axle.

[0013] In one possible implementation, the upper and lower walls of the housing are each provided with a first limiting post and a second limiting post, the end of the first wheel axle extends into the first limiting post, and the end of the second wheel axle extends into the second limiting post.

[0014] In one possible implementation, the upper and lower walls of the housing are provided with reinforcing ribs, which connect the first limiting post and the second limiting post.

[0015] In one possible implementation, a plurality of first mounting portions are provided on the outer side wall of the housing.

[0016] In one possible implementation, the housing includes an upper cover and a lower shell, the upper cover being fixedly connected to the lower shell, and a second mounting portion being provided at one end of the upper cover, on which the motor is mounted.

[0017] In one possible implementation, the second mounting part is provided with a positioning protrusion, and the lower shell is provided with a positioning groove corresponding to the position of the second mounting part, with the positioning protrusion extending into the positioning groove.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting support columns and lubricating components in the housing to support the drive shaft, the stability of the drive shaft is improved, while the lubricating components can reduce the wear of the drive shaft and help to improve the service life of the drive shaft. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the worm gear reducer motor of this utility model;

[0020] Figure 2 This is an exploded view of the worm gear reducer motor of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the upper cover in the worm gear reducer motor of this utility model;

[0022] Figure 4 This is a schematic diagram of the lower housing of the worm gear reducer motor of this utility model;

[0023] Figure 5This is a schematic diagram of the transmission component in the worm gear reducer motor of this utility model.

[0024] In the picture:

[0025] 1. Motor; 11. Drive shaft; 12. Worm gear;

[0026] 2. Housing; 21. Support column; 211. Limiting groove; 22. Lubricating component; 23. First limiting column; 24. Second limiting column; 25. Reinforcing rib; 26. First mounting part; 27. Top cover; 271. Second mounting part; 272. Positioning protrusion; 28. Lower shell; 281. Positioning groove;

[0027] 3. Transmission assembly; 31. Primary gear; 32. Secondary gear; 33. Output gear; 34. Output shaft; 341. Snap-fit ​​hole; 35. First gear shaft; 36. Second gear shaft;

[0028] 4. Copper sleeve. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0032] like Figure 1-5 The worm gear reducer motor shown can be applied to smart locks. Smart locks generally include components such as a reducer motor, a lock body, and a bolt. The reducer motor transmits its output torque to the bolt control mechanism to control the movement of the bolt and realize the opening and closing of the lock.

[0033] The worm gear reducer motor includes a motor 1, a housing 2, and a transmission assembly 3. The motor 1 is mounted on the housing 2, and a drive shaft 11 is mounted on the motor 1. A worm gear 12 is mounted on the drive shaft 11. A support column 21 is provided inside the housing 2. A lubricating element 22 is provided in the middle of the support column 21. The end of the drive shaft 11 extends into the lubricating element 22, and the drive shaft 11 and the lubricating element 22 are slidably connected. The transmission assembly 3 includes a primary gear 31, a secondary gear 32, and an output gear 33 that mesh in sequence. The worm gear 12 meshes with the primary gear 31. It should be noted that the worm gear 12 is sleeved on the drive shaft 11 and fixedly connected to the drive shaft 11, rotating together with the drive shaft 11. The lubricating element 22 is annular, and the end of the drive shaft 11 extends into the inner ring of the lubricating element 22. Lubricating oil can be dripped into the lubricating element 22 to reduce the sliding friction between the drive shaft 11 and the lubricating element 22. Preferably, the lubricating element 22 is a bearing. The first-stage gear 31 includes a worm gear and a spur gear arranged coaxially, and the second-stage gear 32 includes two spur gears arranged coaxially. The worm gear 12 and the worm gear... The upper primary gear 31 meshes with the upper secondary gear 32, and the lower secondary gear 32 meshes with the output gear 33. The secondary gear 32 is an integral structure. When the motor 1 rotates, the power is transmitted to the output gear 33 through the worm gear 12, the primary gear 31, and the secondary gear 32. Specifically, the worm gear 12 has four threads, that is, it has four spiral lines. When the worm gear 12 rotates once, the worm gear rotates through four teeth. This design can greatly improve the transmission efficiency of the geared motor.

[0034] The beneficial effects of this utility model are as follows: by setting support columns 21 and lubricating components 22 in the housing 2 to support the transmission shaft 11, the stability of the transmission shaft 11 is improved, while the lubricating components 22 can reduce the wear of the transmission shaft 11 and help to improve the service life of the transmission shaft 11.

[0035] Please refer to Figures 2 to 4 In one possible implementation, a limiting groove 211 is provided in the middle of the support column 21, and the lubricating element 22 is disposed within the limiting groove 211. It should be noted that the limiting groove 211 is circular. The limiting groove 211 provides an installation base for the lubricating element 22 and restricts the lubricating element 22 to prevent accidental movement. Furthermore, the support column 21 has a hollow structure that communicates with the limiting groove 211. This design can reduce material consumption while ensuring the structural strength of the support column 21.

[0036] Please refer to Figure 1In one possible implementation, the output gear 33 is provided with an output shaft 34, which is used to engage with an external component. It should be noted that the output shaft 34 is located at the center of the output gear 33, and the output shaft 34 and the output gear 33 are integrally formed. The output shaft 34 has a through-hole 341 in its center, through which the latch control mechanism can engage with the output shaft 34. This allows the output shaft 34 to drive the latch control mechanism, thereby controlling the movement of the latch to achieve locking and unlocking.

[0037] Please refer to Figure 2 In one possible implementation, the housing 2 has a through hole, and both ends of the output shaft 34 are provided with copper sleeves 4, which abut against the inner wall of the through hole. It is easy to understand that copper alloy has high strength and hardness, and can withstand large loads. Copper alloy has excellent thermal conductivity, which helps to dissipate heat and reduce the heat generated by friction. By providing copper sleeves 4 at both ends of the output shaft 34, the output shaft 34 can be prevented from directly contacting the housing 2, thereby reducing friction. It can also seal the gap between the output shaft 34 and the housing 2, which is beneficial to improving the sealing performance of the housing 2. In addition, solid lubricant (such as graphite or molybdenum disulfide) can be embedded in the copper sleeves 4 to improve the self-lubricating performance.

[0038] Please refer to Figure 5 In one possible implementation, the transmission assembly 3 further includes a first axle 35 and a second axle 36. A primary gear 31 is rotatably mounted on the first axle 35, and a secondary gear 32 is rotatably mounted on the second axle 36. It should be noted that the first axle 35 provides a mounting base for the primary gear 31, and the second axle 36 provides a mounting base for the secondary gear 32, thereby positioning the primary gear 31 and the secondary gear 32 at corresponding positions on the housing 2, which helps improve the transmission accuracy of the transmission assembly 3.

[0039] Please refer to Figure 3 and Figure 4In one possible implementation, the upper and lower walls of the housing 2 are each provided with a first limiting post 23 and a second limiting post 24. The end of the first wheel axle 35 extends into the first limiting post 23, and the end of the second wheel axle 36 extends into the second limiting post 24. It should be noted that both the first limiting post 23 and the second limiting post 24 are provided with blind holes. The ends of the first wheel axle 35 and the second wheel axle 36 extend into the blind holes in the upper and lower walls, respectively, to limit the movement of the first wheel axle 35 and the second wheel axle 36. The provision of the first limiting post 23 and the second limiting post 24 allows for precise positioning and installation of the first wheel axle 35 and the second wheel axle 36, which is beneficial to improving the stability of the transmission assembly 3. Furthermore, the first limiting post 23 and the second limiting post 24 can also limit the vertical movement of the first-stage gear 31 and the second-stage gear 32 to prevent accidental sliding in the vertical direction, thus further improving the stability of the transmission assembly 3.

[0040] Please refer to Figure 3 and Figure 4 In one possible implementation, reinforcing ribs 25 are provided on both the upper and lower walls of the housing 2, and the reinforcing ribs 25 connect the first limiting post 23 and the second limiting post 24. It should be noted that both the first limiting post 23 and the second limiting post 24 protrude from the inner wall surface of the housing 2, and the arrangement of the reinforcing ribs 25 allows the first limiting post 23 and the second limiting post 24 to connect with each other, and can also connect to the side wall surface of the housing 2, which is beneficial to improving the structural strength of the first limiting post 23 and the second limiting post 24.

[0041] Please refer to Figure 1 In one possible implementation, a plurality of first mounting portions 26 are provided on the outer side wall of the housing 2. It should be noted that the first mounting portions 26 are used to fix the housing 2 so that the housing 2 is mounted on the lock body. There are three first mounting portions 26, which are respectively provided on different side walls of the housing 2, which helps to improve the stability of the housing 2 being fixed. The first mounting portions 26 are provided with through holes, and the housing 2 can be fixed by using fastening screws through the through holes.

[0042] Please refer to Figures 2 to 4In one possible implementation, the housing 2 includes an upper cover 27 and a lower shell 28, with the upper cover 27 and the lower shell 28 fixedly connected. One end of the upper cover 27 is provided with a second mounting part 271, and the motor 1 is mounted on the second mounting part 271. It should be noted that the second mounting part 271 is provided with through holes for bolts to pass through and through holes for the drive shaft 11 to pass through, so that the motor 1 is fixedly mounted on the second mounting part 271 by fastening bolts. In addition, the upper cover 27 and the lower shell 28 are also fixedly connected by fastening bolts. It should also be noted that the support column 21 is divided into two parts. The lower half of the support column 21 is located on the lower shell 28, and the upper half of the support column 21 is located on the upper cover 27. Half of the limiting groove 211 is located on the upper half of the support column 21, and the other half of the limiting groove 211 is located on the lower half of the support column 21. When the upper cover 27 and the lower shell 28 are connected, the support column 21 forms a whole, and the limiting groove 211 also forms a complete circle. The lubricating element 22 is completely located in the limiting groove 211.

[0043] Please refer to Figure 3 and Figure 4 In one possible implementation, the second mounting portion 271 is provided with a positioning protrusion 272, and the lower shell 28 is provided with a positioning groove 281 corresponding to the position of the second mounting portion 271, with the positioning protrusion 272 extending into the positioning groove 281. It should be noted that when the upper cover 27 is connected to the lower shell 28, the positioning protrusion 272 engaging with the positioning groove 281 helps to improve the stability of the connection between the second mounting portion 271 and the lower shell 28, as well as the sealing performance, thereby improving the overall stability of the housing 2.

[0044] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A worm gear reducer motor, characterized in that, Includes the motor, housing, and transmission components; The motor is mounted on the housing, and a drive shaft is provided on the motor, with a worm gear sleeved on the drive shaft; The housing is provided with a support column, and a lubricating element is provided in the middle of the support column. The end of the drive shaft extends into the lubricating element, and the drive shaft is slidably connected to the lubricating element. The transmission assembly includes a primary gear, a secondary gear, and an output gear that mesh sequentially, and the worm gear meshes with the primary gear.

2. The worm gear reducer motor as described in claim 1, characterized in that, The support column has a limiting groove in the middle, and the lubricant is disposed in the limiting groove.

3. The worm gear reducer motor as described in claim 1, characterized in that, The output gear is provided with an output shaft, which is used to engage with an external component.

4. The worm gear reducer motor as described in claim 3, characterized in that, The housing has a through hole, and both ends of the output shaft are provided with copper sleeves, which abut against the inner wall of the through hole.

5. The worm gear reducer motor as described in claim 1, characterized in that, The transmission assembly further includes a first axle and a second axle, wherein the first-stage gear is rotatably mounted on the first axle and the second-stage gear is rotatably mounted on the second axle.

6. The worm gear reducer motor as described in claim 5, characterized in that, The upper and lower walls of the housing are each provided with a first limiting post and a second limiting post. The end of the first wheel axle extends into the first limiting post, and the end of the second wheel axle extends into the second limiting post.

7. The worm gear reducer motor as described in claim 6, characterized in that, The upper and lower walls of the box are provided with reinforcing ribs, which connect the first limiting post and the second limiting post.

8. The worm gear reducer motor as described in claim 1, characterized in that, The outer wall of the box is provided with multiple first mounting parts.

9. The worm gear reducer motor as described in claim 1, characterized in that, The housing includes an upper cover and a lower shell, the upper cover and the lower shell are fixedly connected, and a second mounting part is provided at one end of the upper cover, and the motor is mounted on the second mounting part.

10. The worm gear reducer motor as described in claim 9, characterized in that, The second mounting part is provided with a positioning protrusion, and the lower shell is provided with a positioning groove corresponding to the position of the second mounting part, and the positioning protrusion extends into the positioning groove.

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