Gear reducer motor with high reduction ratio

Abstract

The utility model discloses a gear reducer motor with a high reduction ratio. The gear reducer motor comprises a driving motor, a transmission assembly and a box body, the driving motor is arranged at the end part of the box body, and a worm is arranged at the driving end of the driving motor; the transmission assembly is arranged in the box body and comprises two coaxially-arranged first-stage gears, two coaxially-arranged second-stage gears, two coaxially-arranged third-stage gears and an output gear, the worm is meshed with the first-stage gears, the first-stage gears are meshed with the second-stage gears, the third-stage gears are meshed with the third-stage gears, and the output gear is meshed with the third-stage gears. The first-stage gear is meshed with the first-stage gear, the second-stage gear is meshed with the third-stage gear, the third-stage gear is meshed with the output gear, and the first-stage gear, the second-stage gear, the third-stage gear and the output gear are arranged side by side in the length direction of the box body.

Description

TECHNICAL FIELD

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

[0002] The gear 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 gear drive gear to reach certain reduction purpose, again adopts the multistage structure, can greatly reduce the rotational speed to increase the output torque of the reduction motor.

[0003] The traditional gear reduction motor has the following problems in the actual installation and application process:

[0004] 1. The output torque is not large due to the parallel shaft gear transmission principle and space;

[0005] 2. More components are required to meet the high reduction ratio, making the structure too complex;

[0006] 3. Because the gear number is large, the transmission precision is low, and it can only be used for ordinary transmission occasions. INVENTION CONTENTS

[0007] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a gear reduction motor with high reduction ratio to solve the technical problems of large installation space and insufficient output torque in the prior art.

[0008] The utility model adopts the following technical scheme to realize: a gear reduction motor with high reduction ratio, comprising a drive motor, a transmission assembly and a box body;

[0009] The drive motor is arranged at the end of the box body, and the drive end of the drive motor is provided with a worm;

[0010] The transmission assembly is arranged in the box body, and the transmission assembly comprises two coaxially arranged primary gears, two coaxially arranged secondary gears, two coaxially arranged tertiary gears and an output gear, the worm is engaged with the primary gear, the primary gear is engaged with the secondary gear, the secondary gear is engaged with the tertiary gear, the tertiary gear is engaged with the output gear, and the primary gear, the secondary gear, the tertiary gear and the output gear are arranged side by side along the length direction of the box body.

[0011] In a possible implementation, the clutch assembly further comprises a rotating member and two clutch gears, the rotating member is rotatably arranged relative to the box body, and the two clutch gears are arranged at two ends of the rotating member respectively, the clutch gears are engaged with the secondary gear, when the driving motor rotates in a forward direction, one of the clutch gears is engaged with the tertiary gear, and when the driving motor rotates in a reverse direction, the rotating member rotates to enable the other clutch gear to be engaged with the tertiary gear.

[0012] In a possible implementation, the rotating member is V-shaped, and the two clutch gears are symmetrically arranged on the rotating member.

[0013] In a possible implementation, the rotating member is provided with a clutch shaft, the clutch gears are sleeved on the clutch shaft, a limiting portion is arranged at a top end of the clutch shaft, and a limiting groove is arranged on the clutch gear, and the limiting portion is located in the limiting groove.

[0014] In a possible implementation, a spring is sleeved on the clutch shaft, one end of the spring is in abutment with the rotating member, and the other end of the spring is in abutment with the clutch gear.

[0015] In a possible implementation, the output gear is provided with an output shaft, and one end of the output shaft extends out of the box body.

[0016] In a possible implementation, the box body 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.

[0017] In a possible implementation, the upper wall and the lower wall of the box body are both provided with a first limiting column, a second limiting column and a third limiting column, an end portion of the first wheel shaft extends into the first limiting column, an end portion of the second wheel shaft extends into the second limiting column, and an end portion of the third wheel shaft extends into the third limiting column.

[0018] In a possible implementation, the upper wall and the lower wall of the box body are both provided with a reinforcing rib, and the reinforcing rib connects the first limiting column, the second limiting column and the third limiting column.

[0019] In a possible implementation, the box body comprises an upper cover and a lower shell, and the upper cover is fixedly connected with the lower shell.

[0020] Compared with the prior art, the utility model discloses the beneficial effect lies in: drive motor and transmission assembly between through worm gear transmission can obtain greater gear reduction ratio, and further improve the reduction ratio through setting the meshing first gear, second gear and third gear in proper order, and the output torque of reduction motor is improved further, to satisfy the demand of customer, and, the arrangement mode of first gear, second gear, third gear and output gear can reduce the occupied space of transmission assembly, to realize the purpose of reducing the volume of reduction motor. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structural diagram of high reduction ratio gear reduction motor of the utility model;

[0022] Figure 2 It is the exploded view of high reduction ratio gear reduction motor of the utility model;

[0023] Figure 3 It is the structural diagram of high reduction ratio gear reduction motor of the utility model hides upper cover and transmission assembly;

[0024] Figure 4 It is the exploded view of clutch assembly in high reduction ratio gear reduction motor of the utility model;

[0025] Figure 5 It is the structural diagram of transmission assembly and clutch assembly in high reduction ratio gear reduction motor of the utility model.

[0026] In the drawing:

[0027] 1, drive motor;11, worm;

[0028] 2, transmission assembly;21, first gear;22, second gear;23, third gear;24, output gear;25, output shaft;26, first axle;27, second axle;28, third axle;

[0029] 3, box;31, mounting hole;32, limiting protrusion;33, first limiting column;34, second limiting column;35, third limiting column;36, reinforcing rib;37, upper cover;38, lower shell;

[0030] 4, clutch assembly;41, rotating part;42, clutch gear;421, limiting groove;43, clutch shaft;431, limiting portion;44, spring. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] like Figures 1-5 The high reduction ratio gear motor shown can be applied to smart locks. Smart locks generally include components such as a gear motor, a lock body, and a bolt. The gear 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.

[0035] The utility model provides a high reduction ratio gear reduction motor, including drive motor 1, transmission assembly 2 and box 3, drive motor 1 sets up at the end of box 3, and drive end of drive motor 1 is provided with worm 11, transmission assembly 2 sets up in box 3, and transmission assembly 2 includes two coaxial setting primary gear 21, two coaxial setting secondary gear 22, two coaxial setting tertiary gear 23 and output gear 24, and worm 11 is engaged with primary gear 21, and primary gear 21 is engaged with secondary gear 22, and secondary gear 22 is engaged with tertiary gear 23, and tertiary gear 23 is engaged with output gear 24, and primary gear 21, secondary gear 22, tertiary gear 23 and output gear 24 are side by side along the length direction of box 3, it is explained that, the primary gear 21 in two in the upper is spur gear, and the primary gear 21 in the lower is turbine, and secondary gear 22 and tertiary gear 23 are all spur gear, and worm 11 is engaged with turbine, and the primary gear 21 in the upper is engaged with the secondary gear 22 in the upper, and the secondary gear 22 in the lower is engaged with the tertiary gear 23 in the upper, and the tertiary gear 23 in the lower is engaged with output gear 24, so that drive motor 1 step by step drives output gear 24 to rotate, and gradually improves the reduction ratio of drive motor 1 and output gear 24, and then improves the torque of reduction motor, in addition, drive motor 1 can be fixed on the end face outside box 3 through fastening screw, and drive motor 1 is electrically connected with the circuit board in intelligent lock, and box 3 is equipped with the mounting hole 31 of penetrating, so as to install box 3 on the main body of intelligent lock.

[0036] Compared with the prior art, the utility model has the advantages that: the worm gear transmission between the drive motor 1 and the transmission assembly 2 can obtain a larger gear reduction ratio, and the primary gear 21, the secondary gear 22 and the tertiary gear 23 are sequentially engaged to further improve the reduction ratio, thereby improving the output torque of the reduction motor to meet the needs of customers, and the arrangement of the primary gear 21, the secondary gear 22, the tertiary gear 23 and the output gear 24 can reduce the occupied space of the transmission assembly 2 to achieve the purpose of reducing the size of the reduction motor.

[0037] Please refer to Figure 2 , Figure 3 and Figure 5In a possible implementation, the clutch assembly 4 comprises a rotating member 41 and two clutch gears 42. The rotating member 41 is rotatably arranged relative to the box 3. The two clutch gears 42 are arranged at two ends of the rotating member 41 respectively. The clutch gears 42 are in mesh with the secondary gear 22. When the driving motor 1 rotates forward, one of the clutch gears 42 is in mesh with the tertiary gear 23. When the driving motor 1 reverses, the rotating member 41 rotates to make the other clutch gear 42 in mesh with the tertiary gear 23. It should be noted that the two clutch gears 42 are in mesh with the secondary gear 22 simultaneously. The rotating member 41 is coaxially arranged with the secondary gear 22. The clutch assembly 4 is arranged to make the transmission assembly 2 disconnected first and then connected when the rotating direction of the driving motor 1 is changed, which is beneficial to improve the stability of the reduction motor when the rotating direction of the driving motor 1 is changed, improve the service life of the reduction motor, and further improve the service life of the intelligent lock. Specifically, when the driving motor 1 changes from forward rotation to reverse rotation, the secondary gear 22 rotates reversely under the drive of the primary gear 21. Since the rotating member 41 is coaxially arranged with the secondary gear 22 and the clutch gears 42 are in mesh with the secondary gear 22, the rotating member 41 reversely rotates under the drive of the secondary gear 22, so that one of the clutch gears 42 is separated from the tertiary gear 23, and the other clutch gear 42 is close to the tertiary gear 23 and then in mesh with the tertiary gear 23. When the driving motor 1 changes from reverse rotation to forward rotation, the other clutch gear 42 is separated from the tertiary gear 23, and one of the clutch gears 42 is in mesh with the tertiary gear 23. The above process is repeated. In addition, the inner wall of the bottom of the box 3 is further provided with two limiting protrusions 32. The two limiting protrusions 32 correspond to the two ends of the rotating member 41 respectively. When the clutch gear 42 at one end of the rotating member 41 is in mesh with the tertiary gear 23, the other end of the rotating member 41 is in abutment with the limiting protrusion 32, so as to limit the rotating member 41, which is beneficial to improve the accuracy of rotation of the rotating member 41 and further improve the transmission accuracy of the clutch gears 42 and the tertiary gear 23. The side wall surface of the limiting protrusion 32 has a curved surface, which is adapted to the curved surface of the end of the rotating member 41.

[0038] For reference Figure 4 In a possible implementation, the rotating member 41 is V-shaped, and the two clutch gears 42 are symmetrically arranged on the rotating member 41. It should be noted that the two clutch gears 42 are symmetrically arranged at the two ends of the V-shaped rotating member 41, and the secondary gear 22 is located at the tip of the rotating member 41, so that the arrangement of the clutch assembly 4 is more compact, which is beneficial to reduce the occupied space of the clutch assembly 4.

[0039] For reference Figure 4In a possible implementation, the rotating member 41 is provided with a clutch shaft 43, the clutch gear 42 is rotatably sleeved on the clutch shaft 43, the top end of the clutch shaft 43 is provided with a limiting portion 431, the clutch gear 42 is provided with a limiting groove 421, and the limiting portion 431 is located in the limiting groove 421. It should be noted that the limiting portion 431 and the limiting groove 421 cooperate to limit the clutch gear 42, so as to avoid the clutch gear 42 from sliding out of the clutch shaft 43.

[0040] Please refer to Figure 4 In a possible implementation, the clutch shaft 43 is sleeved with a spring 44, one end of the spring 44 abuts against the rotating member 41, and the other end of the spring 44 abuts against the clutch gear 42. It should be noted that the spring 44 can elastically support the clutch gear 42, so as to avoid the clutch gear 42 from accidentally sliding on the clutch shaft 43, and the overall structural stability of the clutch assembly 4 is improved.

[0041] Please refer to Figure 1 In a possible implementation, the output gear 24 is provided with an output shaft 25, and one end of the output shaft 25 extends out of the box body 3. It should be noted that the output shaft 25 is rotatably arranged on the box body 3, the output shaft 25 is arranged at the center position of the output gear 24, the box body 3 is provided with a through hole for the output shaft 25 to extend out, the output shaft 25 is used to be connected with the lock tongue to drive the lock tongue to move, and in addition, a copper sleeve is sleeved on the output shaft 25 to reduce the friction and improve the rotation smoothness of the output shaft 25.

[0042] Please refer to Figure 5 In a possible implementation, the box body 3 is further provided with a first wheel shaft 26, a second wheel shaft 27 and a third wheel shaft 28, the primary gear 21 is rotatably sleeved on the first wheel shaft 26, the secondary gear 22 is rotatably sleeved on the second wheel shaft 27, and the tertiary gear 23 is rotatably sleeved on the third wheel shaft 28. It should be noted that the first wheel shaft 26 provides a mounting basis for the primary gear 21, the second wheel shaft 27 provides a mounting basis for the secondary gear 22, and the third wheel shaft 28 provides a mounting basis for the tertiary gear 23 and the clutch assembly 4, so that the primary gear 21, the secondary gear 22 and the tertiary gear 23 are positioned and mounted at the corresponding positions of the box body 3, and the transmission accuracy of the transmission assembly 2 is improved.

[0043] Please refer to Figure 2 and Figure 3In a possible implementation, the upper wall and the lower wall of the box body 3 are each provided with a first limiting column 33, a second limiting column 34 and a third limiting column 35, the end of the first wheel shaft 26 extends into the first limiting column 33, the end of the second wheel shaft 27 extends into the second limiting column 34, and the end of the third wheel shaft 28 extends into the third limiting column 35. It should be noted that the first limiting column 33, the second limiting column 34 and the third limiting column 35 are each provided with a blind hole, and the two ends of the first wheel shaft 26, the second wheel shaft 27 and the third wheel shaft 28 extend into the blind holes of the upper wall and the lower wall, respectively. The first limiting column 33, the second limiting column 34 and the third limiting column 35 can be used to accurately position and install the first wheel shaft 26, the second wheel shaft 27 and the third wheel shaft 28, and can also be used to limit the up-down orientation of the first gear 21, the second gear 22 and the third gear 23, so as to avoid accidental sliding of the first gear 21, the second gear 22 and the third gear 23 in the up-down direction, and improve the stability of the transmission assembly 2.

[0044] Please refer to Figure 2 and Figure 3 In a possible implementation, the upper wall and the lower wall of the box body 3 are each provided with a reinforcing rib 36, and the reinforcing rib 36 connects the first limiting column 33, the second limiting column 34 and the third limiting column 35. It should be noted that the first limiting column 33, the second limiting column 34 and the third limiting column 35 protrude from the inner wall surface of the box body 3, and the reinforcing rib 36 can connect the first limiting column 33, the second limiting column 34 and the third limiting column 35, and can also be connected with the side wall surface of the box body 3, which is conducive to improving the structural strength of the first limiting column 33, the second limiting column 34 and the third limiting column 35.

[0045] Please refer to Figure 2 Figure 3 In a possible implementation, the box body 3 includes an upper cover 37 and a lower shell 38, and the upper cover 37 is fixedly connected with the lower shell 38. It should be noted that the box body 3 is in the shape of a rectangular body, and the upper cover 37 and the lower shell 38 are fixedly connected by fastening screws.

[0046] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art based on the present application are within the scope of protection of the present application.

Claims

1. A high reduction ratio gear reduction motor characterized by, The drive motor, the transmission assembly, the clutch assembly and the box body are included. The drive motor is arranged at the end of the box body, and the driving end of the drive motor is provided with a worm. The transmission assembly is arranged in the box body, and the transmission assembly includes two coaxially arranged primary gears, two coaxially arranged secondary gears, two coaxially arranged tertiary gears and an output gear. The clutch assembly includes a rotating member and two clutch gears, the rotating member is rotatably arranged relative to the box body, and the two clutch gears are arranged at the two ends of the rotating member respectively. The rotating member is provided with a clutch shaft, the clutch gears are sleeved on the clutch shaft, the top end of the clutch shaft is provided with a limiting part, the clutch gears are provided with limiting grooves, the limiting part is located in the limiting grooves, a spring is sleeved on the clutch shaft, one end of the spring abuts against the rotating member, and the other end of the spring abuts against the clutch gears.

2. The high-reduction-ratio gear reduction motor of claim 1, wherein, The rotating member is V-shaped, and the two clutch gears are symmetrically arranged on the rotating member.

3. The high-reduction-ratio gear reduction motor of claim 1, wherein, The output gear is provided with an output shaft, and one end of the output shaft extends out of the box body.

4. The high-reduction-ratio gear reduction motor of claim 1, wherein, The box body is further provided with a first axle, a second axle and a third axle, the primary gear is rotatably sleeved on the first axle, the secondary gear is rotatably sleeved on the second axle, and the tertiary gear is rotatably sleeved on the third axle.

5. The high-reduction-ratio gear reduction motor of claim 4, wherein, The upper wall and the lower wall of the box body are provided with a first limiting column, a second limiting column and a third limiting column, the end of the first axle extends into the first limiting column, the end of the second axle extends into the second limiting column, and the end of the third axle extends into the third limiting column.

6. The high-reduction-ratio gear reduction motor of claim 5, wherein, The upper wall and the lower wall of the box body are provided with reinforcing ribs, and the reinforcing ribs connect the first limiting column, the second limiting column and the third limiting column.

7. The high-reduction-ratio gear reduction motor of claim 1, wherein The box body includes an upper cover and a lower shell, and the upper cover is fixedly connected with the lower shell.

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