Miniature gear reducer motor

Abstract

The utility model discloses a miniature gear reducer motor, which comprises a driving motor, a transmission assembly and a box body, the driving motor is arranged on the box body, the driving motor and the box body are arranged in parallel, and an input gear is arranged at the driving end of the driving motor; the transmission assembly is arranged in the box body and comprises a first-stage gear, a second-stage gear, a third-stage gear and an output gear which are sequentially meshed, the first-stage gear comprises a fluted disc and a straight gear which are coaxially arranged, the input gear is meshed with the fluted disc, and the first-stage gear, the second-stage gear and the third-stage gear are arranged side by side; and the output gear is adjacent to the driving motor. The driving motor is arranged in the box body in parallel, the box body can be prevented from being influenced by the height of the driving motor, the thickness of the box body can be reduced, the fluted disc is meshed with the input gear so that the driving motor can smoothly drive the transmission assembly to move, the transmission assembly is reasonable in layout, and the space utilization rate of the box body can be improved. Therefore, the size of the box body is further reduced, so that the gear motor is more miniaturized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reduction motor technical field especially relates to a miniature gear speed reduction motor. BACKGROUND

[0002] The gear speed reduction motor is generally through the motor, internal combustion engine or other high-speed operation power through the gear reducer (or reduction box) input shaft small pinion drive gear to reach certain speed reduction purpose, again adopt multistage such as structure, can greatly reduce the rotational speed to increase the output torque of speed reduction motor. The core "force increasing reduction" effect is to utilize the gear transmission of each stage to reach the purpose of speed reduction, and the speed reducer is composed of gear pairs of each stage.

[0003] The intelligent lock generally includes speed reduction motor, lock body and lock tongue and the like components, the speed reduction motor transmits output torque to the lock tongue control mechanism, controls the lock tongue to move, realizes the lock.

[0004] However, the speed reduction motor in the prior art is large in size due to the existence of gears of each stage, thereby leading to the increase of the size of the intelligent lock, especially the increase of the thickness of the intelligent lock, so that the intelligent lock is too bulky and not favored by users. UTILITY MODEL CONTENTS

[0005] In order to overcome the deficiencies of the prior art, the utility model aims at providing a miniature gear speed reduction motor to solve the technical problem of large size in the prior art.

[0006] The utility model adopts the following technical scheme: a miniature gear speed reduction motor, including drive motor, transmission assembly and box body;

[0007] The drive motor is arranged on the box body, and the drive motor is arranged in parallel with the box body, and the drive end of the drive motor is provided with an input gear;

[0008] The transmission assembly is arranged in the box body, and the transmission assembly includes a first gear, a second gear, a third gear and an output gear which are engaged in sequence, the first gear includes a gear disc and a spur gear which are arranged coaxially, the input gear is engaged with the gear disc, the first gear, the second gear and the third gear are arranged side by side, and the output gear is arranged adjacent to the drive motor.

[0009] In a possible implementation, the middle part of the box body has a through hole, the box body is provided with a clamping ring, the clamping ring is rotatably arranged relative to the box body, the outer ring of the clamping ring is connected with the output gear, and the inner ring of the clamping ring extends out of the box body to be clamped with an external component.

[0010] In a possible implementation, the output gear is provided with an arc-shaped limiting slot, and the clamping ring is provided with a limiting protrusion which extends into the limiting slot.

[0011] In a possible implementation, the lower part of the box is provided with a first limiting ring, the upper part of the box is provided with a second limiting ring corresponding to the first limiting ring, and the clamping ring extends from between the first limiting ring and the second limiting ring.

[0012] In a possible implementation, the upper part of the box is further provided with a third limiting ring, the second limiting ring is located in the inner ring of the third limiting ring, and the third limiting ring is located directly above the output gear.

[0013] In a possible implementation, the inner wall of the box is provided with a first reinforcing rib and a second reinforcing rib, the two ends of the first reinforcing rib are connected with the second limiting ring and the third limiting ring respectively, and the two ends of the second reinforcing rib are connected with the third limiting ring and the side wall of the box respectively.

[0014] In a possible implementation, the box is further provided with a first wheel shaft, a second wheel shaft and a third wheel shaft, the primary gear is rotatably sleeved on the first wheel shaft, the secondary gear is rotatably sleeved on the second wheel shaft, and the tertiary gear is rotatably sleeved on the third wheel shaft.

[0015] In a possible implementation, the upper wall and the lower wall of the box are both provided with a first limiting column, a second limiting column and a third limiting column, the end of the first wheel shaft extends into the first limiting column, the end of the second wheel shaft extends into the second limiting column, and the end of the third wheel shaft extends into the third limiting column.

[0016] In a possible implementation, the output gear is provided with a sensing column, and the inner wall of the box is provided with an avoiding slot, and the end of the sensing column extends into the avoiding slot.

[0017] In a possible implementation, the outer side wall of the box is provided with a plurality of mounting portions.

[0018] Compared with the prior art, the driving motor is parallelly arranged in the box, so that the thickness of the box can be reduced, and the driving motor can smoothly drive the transmission assembly to move by arranging the gear disc and the input gear in meshing, the primary gear, the secondary gear and the tertiary gear are arranged side by side, and the output gear is arranged adjacent to the driving motor, so that the layout of the transmission assembly is reasonable, the space utilization of the box is improved, and the volume of the box is further reduced, so that the reduction motor is more miniaturized. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

[0022] Figure 4 This is a schematic diagram of the transmission component in the miniature gear reducer motor of this utility model;

[0023] Figure 5 This is a cross-sectional view of the miniature gear reducer motor of this utility model.

[0024] In the picture:

[0025] 1. Drive motor; 11. Input gear;

[0026] 2. Transmission assembly; 21. Primary gear; 22. Secondary gear; 23. Tertiary gear; 24. Output gear; 241. Limiting groove; 242. Sensing post; 243. Fourth limiting ring; 25. First wheel axle; 26. Second wheel axle; 27. Third wheel axle;

[0027] 3. Housing; 31. Upper shell; 311. Second limiting ring; 312. Third limiting ring; 313. First reinforcing rib; 314. Second reinforcing rib; 32. Lower shell; 321. First limiting ring; 322. Clearance groove; 323. Mounting part; 33. First limiting post; 34. Second limiting post; 35. Third limiting post;

[0028] 4. Snap-fit ​​ring; 41. Limiting protrusion. 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 Figures 1-5 The miniature geared motor shown can be used in smart locks. Smart locks generally include components such as a geared motor, a lock body, and a bolt. The geared 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] A miniature gear reducer motor includes a drive motor 1, a transmission assembly 2, and a housing 3. The drive motor 1 is mounted on the housing 3 and is arranged parallel to the housing 3. The drive end of the drive motor 1 is provided with an input gear 11. The transmission assembly 2 is located inside the housing 3 and includes a first-stage gear 21, a second-stage gear 22, a third-stage gear 23, and an output gear 24 that mesh sequentially. The first-stage gear 21 includes a coaxially arranged gear disk and a spur gear. The input gear 11 meshes with the gear disk. The first-stage gear 21, the second-stage gear 22, and the third-stage gear 23 are arranged side by side. The output gear 24 is arranged adjacent to the drive motor 1. It should be noted that both the secondary gear 22 and the tertiary gear 23 include two coaxially arranged spur gears. The input gear 11 meshes with the gear disc. The upper primary gear 21 meshes with the lower secondary gear 22, the upper secondary gear 22 meshes with the upper tertiary gear 23, and the lower tertiary gear 23 meshes with the output gear 24. When the drive motor 1 rotates, power is transmitted to the output gear 24 through the input gear 11, primary gear 21, secondary gear 22, and tertiary gear 23. Furthermore, the primary gear 21, secondary gear 22, and tertiary gear 23 are all integrally formed structures. The drive motor 1 is fixed to the corner of the outer side of the housing 3 by fastening bolts, so that the geared motor is square in shape, thereby making the structure of the geared motor more compact. The housing 3 is composed of an upper shell 31 and a lower shell 32, which are fixedly connected by fastening bolts.

[0034] The beneficial effects of this utility model are as follows: the drive motor 1 is arranged parallel inside the housing 3, which can avoid the housing 3 being affected by the height of the drive motor 1, and is conducive to reducing the thickness of the housing 3. By setting the gear plate to mesh with the input gear 11, the drive motor 1 can smoothly drive the transmission component 2 to move. Furthermore, the first-stage gear 21, the second-stage gear 22 and the third-stage gear 23 are arranged side by side, and the output gear 24 is arranged adjacent to the drive motor 1, which makes the layout of the transmission component 2 reasonable, which is conducive to improving the space utilization of the housing 3, thereby further reducing the volume of the housing 3, so as to make the geared motor more miniaturized.

[0035] Please refer to Figure 1 In one possible implementation, the housing 3 has a through hole in the middle, and a locking ring 4 is provided inside the housing 3. The locking ring 4 is rotatably configured relative to the housing 3. The outer ring of the locking ring 4 is connected to the output gear 24, and the inner ring of the locking ring 4 extends out of the housing 3 to engage with external components. It should be noted that the latch control mechanism can be inserted into the through hole in the middle of the housing 3 and engaged with the locking ring 4. When the output gear 24 rotates, the locking ring 4 drives the latch control mechanism to move, thereby controlling the movement of the latch to achieve locking and unlocking.

[0036] Please refer to Figure 2 and Figure 4 In one possible implementation, the output gear 24 is provided with an arc-shaped limiting groove 241, and the locking ring 4 is provided with a limiting protrusion 41, which extends into the limiting groove 241. It should be noted that the limiting protrusion 41 extends into the limiting groove 241 to engage with the output gear 24. The limiting protrusion 41 is also arc-shaped, and the arc length of the limiting groove 241 is greater than the arc length of the limiting protrusion 41, so that the limiting groove 241 has a space for the limiting protrusion 41 to slide. This allows the locking ring 4 to not be immediately driven in the reverse direction when the drive motor 1 changes from forward to reverse. Instead, it will be driven after the output gear 24 rotates a certain angle and the limiting protrusion 41 comes into contact with the inner wall of the other end of the limiting groove 241.

[0037] Please refer to Figure 5In one possible implementation, the lower part of the housing 3 is provided with a first limiting ring 321, and the upper part of the housing 3 is provided with a second limiting ring 311 corresponding to the first limiting ring 321. The snap ring 4 extends out from between the first limiting ring 321 and the second limiting ring 311. It should be noted that the first limiting ring 321 is set on the lower shell 32, the second limiting ring 311 is set on the upper shell 31, and the snap ring 4 is set on the top surface of the first limiting ring 321. The snap ring 4 and the second limiting ring 311 are in clearance fit to ensure that the snap ring 4 can rotate smoothly. The snap ring 4 is located between the first limiting ring 321 and the second limiting ring 311, which can limit the snap ring 4 in the vertical direction. In addition, the output gear 24 is also provided with a fourth limiting ring 243. The snap ring 4 is located inside the fourth limiting ring 243, which can limit the snap ring 4 in the horizontal direction. The outer wall surface of the snap ring 4 is in clearance fit with the inner wall surface of the fourth limiting ring 243, which greatly improves the stability of the snap ring 4.

[0038] Please refer to Figure 5 In one possible implementation, the upper part of the housing 3 is further provided with a third limiting ring 312, the second limiting ring 311 is located within the inner ring of the third limiting ring 312, and the third limiting ring 312 is located directly above the output gear 24. It should be noted that the output gear 24 is annular, and the inner ring of the output gear 24 is located between the three limiting rings and the locking ring 4 to limit the output gear 24, preventing accidental vertical movement. Furthermore, the output gear 24 and the third limiting ring 312 are in clearance fit to ensure the stability of the clearance fit rotation.

[0039] Please refer to Figure 3 In one possible implementation, the inner wall of the housing 3 is provided with a first reinforcing rib 313 and a second reinforcing rib 314. The two ends of the first reinforcing rib 313 are respectively connected to the second limiting ring 311 and the third limiting ring 312, and the two ends of the second reinforcing rib 314 are respectively connected to the third limiting ring 312 and the side wall of the housing 3. It should be noted that there are multiple first reinforcing ribs 313 and second reinforcing ribs 314. The arrangement of the first reinforcing ribs 313 and second reinforcing ribs 314 is beneficial to improving the structural strength of the second limiting ring 311 and the third limiting ring 312. Furthermore, the first limiting ring 321 and the lower shell 32 are integrally formed, and the second limiting ring 311 and the third limiting ring 312 are integrally formed with the upper shell 31.

[0040] Please refer to Figure 2In one possible implementation, the housing 3 is further provided with a first axle 25, a second axle 26, and a third axle 27. A primary gear 21 is rotatably mounted on the first axle 25, a secondary gear 22 is rotatably mounted on the second axle 26, and a tertiary gear 23 is rotatably mounted on the third axle 27. It should be noted that the first axle 25 provides a mounting base for the primary gear 21, the second axle 26 provides a mounting base for the secondary gear 22, and the third axle 27 provides a mounting base for the tertiary gear 23. This allows the primary gear 21, secondary gear 22, and tertiary gear 23 to be positioned and installed in corresponding positions within the housing 3, which is beneficial for improving the transmission accuracy of the transmission assembly 2.

[0041] Please refer to Figure 3 In one possible implementation, the upper and lower walls of the housing 3 are provided with a first limiting post 33, a second limiting post 34 and a third limiting post 35, the end of the first wheel axle 25 extends into the first limiting post 33, the end of the second wheel axle 26 extends into the second limiting post 34, and the end of the third wheel axle 27 extends into the third limiting post 35. It should be noted that both the upper shell 31 and the lower shell 32 are provided with corresponding first limiting posts 33, second limiting posts 34 and third limiting posts 35. Each of the first limiting posts 33, second limiting posts 34 and third limiting posts 35 is provided with blind holes. The two ends of the first wheel shaft 25, second wheel shaft 26 and third wheel shaft 27 extend into the blind holes of the upper shell 31 and the lower shell 32 respectively. The setting of the first limiting posts 33, second limiting posts 34 and third limiting posts 35 can enable the first wheel shaft 25, second wheel shaft 26 and third wheel shaft 27 to be accurately positioned and installed, and play a limiting role for the transmission assembly 2. In addition, the first limiting posts 33, second limiting posts 34 and third limiting posts 35 can also limit the upper and lower positions of the first-stage gear 21, second-stage gear 22 and third-stage gear 23, so as to prevent the first-stage gear 21, second-stage gear 22 and third-stage gear 23 from sliding unexpectedly in the vertical direction, which is beneficial to improving the stability of the transmission assembly 2.

[0042] Please refer to Figure 2 and Figure 4In one possible implementation, the output gear 24 is provided with a sensing post 242, and the inner wall of the housing 3 is provided with a clearance groove 322. The end of the sensing post 242 extends into the clearance groove 322. It should be noted that there are two sensing posts 242, symmetrically arranged on the output gear 24. The lower housing 32 is provided with a through hole through which the sensing posts 242 can be observed. The sensing posts 242 rotate together with the output gear 24. When the sensing posts 242 pass through the through hole, they can be sensed by the sensors on the smart lock, thereby sensing the position of the output gear 24, improving the control force of the smart lock on the geared motor, meeting user requirements, facilitating the installation of the geared motor when the user installs it on the lock body, and improving the user experience. The clearance groove 322 can prevent the sensing posts 242 from rubbing against the lower housing 32, so that the sensing posts 242 can rotate smoothly.

[0043] Please refer to Figure 1 In one possible implementation, the outer side wall of the housing 3 is provided with a plurality of mounting portions 323. It should be noted that the mounting portions 323 are used to fix the housing 3 so that the housing 3 is mounted on the lock body. There are four mounting portions 323, which are respectively set near the four corners of the housing 3, which helps to improve the stability of the housing 3 being fixed. The mounting portions 323 are provided with through holes, and the housing 3 can be fixed by using fastening screws through the through holes.

[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 miniature geared motor, characterized in that, Includes drive motor, transmission components, and housing; The drive motor is mounted on the housing and is arranged parallel to the housing. The drive end of the drive motor is provided with an input gear. The transmission assembly is disposed inside the housing. The transmission assembly includes a first-stage gear, a second-stage gear, a third-stage gear, and an output gear that mesh sequentially. The first-stage gear includes a coaxially arranged gear disk and a spur gear. The input gear meshes with the gear disk. The first-stage gear, the second-stage gear, and the third-stage gear are arranged side by side. The output gear is arranged adjacent to the drive motor.

2. The miniature gear reducer motor as described in claim 1, characterized in that, The housing has a through hole in the middle and a snap-fit ​​ring is provided inside the housing. The snap-fit ​​ring is rotatably disposed relative to the housing. The outer ring of the snap-fit ​​ring is connected to the output gear, and the inner ring of the snap-fit ​​ring extends out of the housing to snap with external components.

3. The miniature gear reducer motor as described in claim 2, characterized in that, The output gear is provided with an arc-shaped limiting groove, and the snap ring is provided with a limiting protrusion, which extends into the limiting groove.

4. The miniature gear reducer motor as described in claim 2, characterized in that, The lower part of the box is provided with a first limiting ring, and the upper part of the box is provided with a second limiting ring corresponding to the first limiting ring. The snap ring extends out from between the first limiting ring and the second limiting ring.

5. The miniature gear reducer motor as described in claim 4, characterized in that, The upper part of the housing is also provided with a third limiting ring, the second limiting ring is located in the inner ring of the third limiting ring, and the third limiting ring is located directly above the output gear.

6. The miniature gear reducer motor as described in claim 5, characterized in that, The inner wall of the box is provided with a first reinforcing rib and a second reinforcing rib. The two ends of the first reinforcing rib are respectively connected to the second limiting ring and the third limiting ring, and the two ends of the second reinforcing rib are respectively connected to the third limiting ring and the side wall of the box.

7. The miniature gear reducer motor as described in claim 1, characterized in that, The housing is also provided with a first axle, a second axle and a third axle. The first-stage gear is rotatably mounted on the first axle, the second-stage gear is rotatably mounted on the second axle, and the third-stage gear is rotatably mounted on the third axle.

8. The miniature gear reducer motor as described in claim 7, characterized in that, The upper and lower walls of the housing are each provided with a first limiting post, a second limiting post, and a third limiting post. The end of the first wheel axle extends into the first limiting post, the end of the second wheel axle extends into the second limiting post, and the end of the third wheel axle extends into the third limiting post.

9. The miniature gear reducer motor as described in claim 1, characterized in that, The output gear is provided with a sensing post, and the inner wall of the housing is provided with a clearance groove, the end of which extends into the clearance groove.

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

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