CN219227362U

CN219227362U - Speed reducing motor

Info

Publication number: CN219227362U
Application number: CN202223553628.3U
Authority: CN
Inventors: 陈国庆; 莫勇华
Original assignee: Foshan Nanhai Meige Motor Co ltd
Current assignee: Foshan Nanhai Meige Motor Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-20
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a gear motor, which comprises a gear housing and a motor housing which are sequentially connected from top to bottom, wherein a turbine is arranged in the gear housing, a stator assembly and a rotor are arranged in the motor housing, and the gear motor further comprises: an output shaft, the outer wall of which is provided with spiral teeth which can be meshed with the turbine; the transmission shaft can synchronously rotate with the rotor, the upper end of the transmission shaft is detachably and synchronously connected to the lower end of the output shaft, the outer diameter of the transmission shaft is smaller than the outer diameter of the output shaft, and the rotation axis of the rotor, the central line of the output shaft and the central line of the transmission shaft are mutually overlapped.

Description

Speed reducing motor

Technical Field

The utility model relates to the field of gear motor structures, in particular to a gear motor.

Background

The gear motor that elevating platform was equipped includes motor main part, turbine reduction gear, and the transmission connection motor main part and turbine reduction gear's transmission shaft, turbine size on the turbine reduction gear has industry standard, consequently the meshing is often fixed in the transmission shaft diameter size of turbine, and then leads to corresponding rotor, stator and motor housing size all synchronous adaptation increase, is difficult to realize gear motor's miniaturization, in the elevating platform special for children, not only the installation space of this kind of gear motor is limited easily, manufacturing cost is also high, can improve product overall weight moreover, reduce user experience.

Disclosure of Invention

The present utility model aims to provide a gear motor which solves one or more of the technical problems of the prior art, and at least provides a beneficial choice or creation.

The utility model solves the technical problems as follows:

the gear motor, including top-down reduction casing and motor casing that connects gradually, be equipped with the turbine in the reduction casing, be equipped with stator module and rotor in the motor casing, still include: an output shaft, the outer wall of which is provided with spiral teeth which can be meshed with the turbine; the transmission shaft can synchronously rotate with the rotor, the upper end of the transmission shaft is detachably and synchronously connected with the lower end of the output shaft, the outer diameter of the transmission shaft is smaller than that of the output shaft, and the rotation axis of the rotor, the center line of the output shaft and the center line of the transmission shaft are mutually overlapped.

The technical scheme has at least the following beneficial effects: when the motor is installed, the upper end of the transmission shaft is synchronously connected to the output shaft, the rotor is synchronously connected to the transmission shaft, the output shaft is meshed with the turbine through the spiral teeth, the center of the turbine is synchronously connected with the output rod, when the rotor in the motor shell rotates under the magnetic action of the stator assembly, the transmission shaft rotates along with the rotor and drives the output shaft to rotate, the turbine which is positioned in the reduction gearbox and meshed with the output shaft rotates, and the output rod rotates to realize dragging of a target.

As a further improvement of the technical scheme, the bottom surface of the output shaft is provided with a mounting hole, and the upper end of the transmission shaft is in interference connection with the mounting hole. The connecting strength between the transmission shaft and the output shaft mounting hole is improved, the bearing capacity is improved, the centering performance is ensured, and the falling possibility is reduced.

As another improvement of the above technical solution, the transmission shaft extends into the spline connection between the outer wall of the mounting hole portion and the inner wall of the mounting hole. The outer wall of the upper end of the transmission shaft is connected with the inner wall of the mounting hole through a spline, so that the relative rotation friction force between the transmission shaft and the output shaft is further improved, and the connection strength between the transmission shaft and the output shaft is improved.

As another improvement of the above technical solution, a side of the transmission shaft away from the output shaft is connected with the motor housing through a first bearing, and the output shaft is connected with the motor housing through a second bearing corresponding to the outer wall of the mounting hole. The output shaft and the transmission shaft are connected with each other and synchronously rotate, the first bearing and the second bearing enable the output shaft, the transmission shaft and the motor shell to be mutually positioned, shaking is reduced, the working stability of the output shaft and the transmission shaft is guaranteed, the second bearing is arranged on the outer side of the transmission shaft and located at the position where the transmission shaft and the output shaft are mutually overlapped and connected, and the connection strength is improved.

As a further improvement of the technical scheme, the speed reduction shell is provided with a rubber part, the rubber part is provided with a through hole extending up and down, and the upper end of the output shaft extends into the through hole. The one end that the transmission shaft was kept away from to the output shaft penetrates in the through-hole of gluing the piece, plays the bearing effect to the output shaft, further improves the job stabilization nature of output shaft, transmission shaft, reduces to rock, glues the piece simultaneously and has the resilience, can absorb the vibrations of output shaft, reduces operating noise.

As another improvement of the above technical solution, the stator assembly includes two magnets respectively disposed at both sides of the rotor. The rotor is wound with a coil, two magnets are surrounded on the outer side of the rotor to form a magnetic field, and the rotor is enabled to rotate under the action of the magnetic field generated by the electrified coil and the magnetic field formed by the stator assembly.

As a further improvement of the technical scheme, the motor comprises a commutator, a carbon brush, a mounting plate, a hall plate, a magnetic ring and a tail cover which are sequentially arranged from top to bottom, wherein the tail cover is connected to the lower end of the motor shell, the mounting plate covers the opening of the lower end of the motor shell, the carbon brush and the hall plate are respectively connected to the upper end face and the lower end face of the mounting plate, the commutator is sleeved on the transmission shaft and props against the carbon brush downwards, and the magnetic ring is sleeved on the lower end of the transmission shaft and faces towards the hall plate upwards. The Hall element on the Hall plate detects the rotation number and the rotation speed of the magnetic ring, further detects the rotation number and the rotation speed of the transmission shaft, and the electric brush and the commutator are matched and coordinated to enable the magnetic polarity generated by the current introduced by the rotor and the magnetic polarity generated by the stator component to attract each other so as to form a rotating magnetic field, and further keep the rotor to rotate continuously.

As another improvement of the technical scheme, the outer wall of the motor shell is coated with a magnet increasing ring, a notch is arranged on the magnet increasing ring, and the notch is opposite to any magnet. In order to realize the light weight of a gear motor, a motor shell is often thinner, the limited motor shell is often easy to cause magnetic flux loss, a magnetism increasing ring is coated at the periphery of the motor shell corresponding to the setting position of the magnet, so that a magnetism conducting effect is formed, the main magnetic flux inside the motor shell is improved, the rotor can still normally run under the condition of smaller volume, meanwhile, a notch pair is positioned on any magnet, the clearance between the two magnets is ensured to be surrounded by the magnetism increasing ring, and the magnetic flux loss is reduced.

As another improvement of the technical scheme, the speed reduction shell comprises a cover plate and a forming shell, wherein the forming shell encloses a mounting cavity, the turbine is positioned in the mounting cavity, the cover plate is connected with the forming shell and covers an opening of the mounting cavity, and the forming shell is made of engineering plastics. The forming shell is made of engineering plastics, so that the rigidity of the forming shell is guaranteed, the impact resistance of the forming shell and internal parts of the forming shell is improved, meanwhile, the creep force is small, the strength is high, the weight of the whole gear motor is further reduced, and the use experience of a user is improved.

As a further improvement of the technical scheme, the cover plate is an iron cover. The cover plate and the forming shell are made of different materials, friction damage of each other is reduced, meanwhile, strength of the cover plate is guaranteed, and cost is low.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the utility model, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

Fig. 1 is an internal structural view of a reduction motor provided by an embodiment of the present utility model;

FIG. 2 is a splice block diagram of an output shaft and a drive shaft provided in an embodiment of the present utility model;

fig. 3 is a structural exploded view of a gear motor according to an embodiment of the present utility model;

fig. 4 is a perspective view of a gear motor according to an embodiment of the present utility model.

In the accompanying drawings: 110-speed reduction shell, 111-turbine, 120-motor shell, 121-rotor, 130-output shaft, 131-mounting hole, 140-transmission shaft, 151-first bearing, 152-second bearing, 153-glue piece, 160-mounting plate, 170-tail cover, 210-helical tooth, 310-commutator, 320-magnet, 330-Hall plate, 340-magnetic ring, 351-cover plate, 352-forming shell and 410-magnetism increasing ring.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to a connection structure that may be better formed by adding or subtracting connection aids depending on the particular implementation. The technical features of the utility model can be interactively combined on the premise of no contradiction and conflict.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, the gear motor includes a gear housing 110 and a motor housing 120 sequentially connected from top to bottom, a turbine 111 is disposed in the gear housing 110, a stator assembly and a rotor 121 are disposed in the motor housing 120, and the gear motor further includes: an output shaft 130 and a transmission shaft 140, wherein the outer wall of the output shaft 130 is provided with helical teeth 210 which can be meshed with the turbine 111; the transmission shaft 140 may rotate synchronously with the rotor 121, the upper end of the transmission shaft 140 is detachably connected to the lower end of the output shaft 130 synchronously, the outer diameter of the transmission shaft 140 is smaller than the outer diameter of the output shaft 130, and the rotation axis of the rotor 121, the center line of the output shaft 130 and the center line of the transmission shaft 140 coincide with each other.

When the motor is installed, the upper end of the transmission shaft 140 is synchronously connected to the position of the output shaft 130, the rotor 121 is synchronously connected to the transmission shaft 140, the output shaft 130 is meshed with the turbine 111 through the spiral teeth 210, the center of the turbine 111 is synchronously connected with the output rod, when the rotor 121 in the motor shell 120 rotates under the magnetic action of the stator assembly, the transmission shaft 140 rotates along with the rotor 121 and drives the output shaft 130 to rotate, the turbine 111 which is positioned in the reduction gearbox and meshed with the output shaft 130 rotates, and the output rod rotates to realize dragging of a target.

In practice, the rotor 121 and the transmission shaft 140 may be locked by a clamping groove, a screw, or the like. And the center line and the rotation axis of the rotor 121, the center line and the rotation axis of the output shaft 130, and the center line and the rotation axis of the transmission shaft 140 are all mutually overlapped, so that the rotation stability of the rotor 121, the output shaft 130 and the transmission shaft 140 is ensured, and the shaking and the noise are reduced. Further, the connection between the reduction case 110 and the motor case 120 may be achieved by bolts. In addition, the hexagonal through hole is formed in the center of the turbine, so that the hexagonal rod with the corresponding diameter penetrates into and drives the hexagonal rod to rotate.

Further, a mounting hole 131 is formed in the bottom surface of the output shaft 130, and the upper end of the transmission shaft 140 is in interference connection with the mounting hole 131.

Specifically, the connection strength between the transmission shaft 140 and the mounting hole 131 of the output shaft 130 is improved, the bearing capacity is improved, the centering performance is ensured, and the falling possibility is reduced.

To improve the connection strength between the transmission shaft 140 and the output shaft 130, in this embodiment, the transmission shaft 140 extends into the spline connection between the outer wall of the mounting hole 131 and the inner wall of the mounting hole 131.

Specifically, the outer wall of the upper end of the transmission shaft 140 is in concave-convex fit with the inner wall of the mounting hole 131 through a spline, and meanwhile, the transmission shaft 140 and the output shaft 130 are in interference connection with each other, so that the relative rotation friction force between the transmission shaft 140 and the output shaft 130 is further improved, and the connection strength between the transmission shaft 140 and the output shaft is improved.

Further, a side of the transmission shaft 140 away from the output shaft 130 is connected to the motor housing 120 through a first bearing 151, and an outer wall of the output shaft 130 corresponding to the mounting hole 131 is connected to the motor housing 120 through a second bearing 152.

Specifically, the output shaft 130 and the transmission shaft 140 are connected to each other and rotate synchronously, the first bearing 151 and the second bearing 152 respectively enable the output shaft 130 and the transmission shaft 140 to be positioned with the motor housing 120, shake is reduced, working stability of the output shaft 130 and the transmission shaft 140 is guaranteed, and the second bearing 152 is mounted on the outer side of the transmission shaft 140 and located at a position where the transmission shaft 140 and the output shaft 130 are mutually overlapped and connected, so that connection strength is improved.

In addition, the second bearing 152 may be sleeved on other positions of the output shaft 130, or the second bearing 152 may be used to connect and position the output shaft 130 and the reduction housing 110 to each other.

In order to improve the installation stability of the output shaft 130, in this embodiment, the speed reduction housing 110 is provided with a rubber member 153, the rubber member 153 is provided with a through hole extending up and down, and the upper end of the output shaft 130 extends into the through hole.

Specifically, the end of the output shaft 130 far away from the transmission shaft 140 penetrates into the through hole of the rubber member 153, so as to have a bearing effect on the output shaft 130, further improve the working stability of the output shaft 130 and the transmission shaft 140, reduce shaking, and meanwhile, the rubber member 153 has rebound resilience, can absorb the vibration of the output shaft 130 and reduce working noise.

Referring to fig. 3, in this embodiment, the gear motor includes a gear housing 110 and a motor housing 120 sequentially connected from top to bottom, a turbine 111 is disposed in the gear housing 110, a stator assembly and a rotor 121 are disposed in the motor housing 120, and the gear motor further includes: an output shaft 130 and a transmission shaft 140, wherein the outer wall of the output shaft 130 is provided with helical teeth 210 which can be meshed with the turbine 111; the transmission shaft 140 may rotate synchronously with the rotor 121, the upper end of the transmission shaft 140 is detachably connected to the lower end of the output shaft 130 synchronously, the outer diameter of the transmission shaft 140 is smaller than the outer diameter of the output shaft 130, and the rotation axis of the rotor 121, the center line of the output shaft 130 and the center line of the transmission shaft 140 coincide with each other. The stator assembly comprises two magnets 320 respectively arranged at two sides of the rotor 121, a commutator 310, a carbon brush, a mounting plate 160, a hall plate 330, a magnetic ring 340 and a tail cover 170 which are sequentially arranged from top to bottom, wherein the tail cover 170 is connected to the lower end of the motor housing 120, the mounting plate 160 covers the lower end opening of the motor housing 120, the carbon brush and the hall plate 330 are respectively connected to the upper end surface and the lower end surface of the mounting plate 160, the commutator 310 is sleeved on the transmission shaft 140 and is propped against the carbon brush downwards, and the magnetic ring 340 is sleeved at the lower end of the transmission shaft 140 and is upwards opposite to the hall plate 330.

Specifically, rotor 121, commutator 310, first bearing 151, magnetic ring 340 overlap in proper order from top to bottom and establish on transmission shaft 140, the last coil that winds of rotor 121, two magnets 320 are fixed at the inner wall of motor housing 120, and enclose the outside at rotor 121 and form the magnetic field, make rotor 121 realize rotating under the magnetic field effect that the magnetic field that utilizes the power-on coil to produce and stator module to form, motor housing 120's lower extreme opening covers has mounting panel 160, mounting panel 160's up end is equipped with the carbon brush, the upper top surface of carbon brush is contradicted each other with commutator 310, mounting panel 160's lower terminal surface is equipped with hall plate 330, hall plate 330 just faces magnetic ring 340 downwards, tail-hood 170 lid closes on mounting panel 160 and the lock hall plate 330.

The Hall element on the Hall plate 330 detects the rotation number and the rotation speed of the magnetic ring 340, and then detects the rotation number and the rotation speed of the transmission shaft 140, the electric brush and the commutator 310 cooperate and coordinate to enable the magnetic polarity generated by the current introduced by the rotor 121 and the magnetic polarity generated by the stator assembly to attract each other to form a rotating magnetic field, and further the continuous rotation of the rotor 121 is kept. In addition, the tail cap 170 may be connected to the mounting plate 160 or the motor housing by a screw, and the mounting plate 160 may be fixed to the lower end opening of the motor housing by a screw, a snap, or a rivet, etc., which is not limited in the embodiment.

Referring to fig. 4, in order to achieve the light weight of the gear motor, the motor housing 120 is often made thinner, but the thinner motor housing has limited functions in reducing the flux loss, in this embodiment, the outer wall of the motor housing 120 is coated with a magnetism increasing ring 410, and the magnetism increasing ring 410 is provided with a notch, and the notch faces any one of the magnets 320.

Specifically, the magnetism increasing ring 410 is wrapped at the periphery of the motor housing 120 corresponding to the setting position of the magnet 320, so that a magnetic conduction effect is formed, the main magnetic flux in the motor housing 120 is improved, the rotor 121 can still normally operate under the condition of smaller volume, meanwhile, the notch pair is positioned on any one magnet 320, positioning is realized, the magnetism increasing ring 410 is ensured to surround a gap between the two magnets 320, and the magnetic flux loss is reduced.

Referring to fig. 3, in this embodiment, the speed reduction housing 110 includes a cover plate 351 and a forming housing 352, the forming housing 352 encloses a mounting cavity, the turbine 111 is located in the mounting cavity, the cover plate 351 is connected with the forming housing 352 and covers an opening of the mounting cavity, the forming housing 352 is made of engineering plastic, and the cover plate 351 is an iron cover.

Specifically, the molded shell 352 is made of engineering plastics, so that the rigidity of the molded shell 352 is ensured, the impact resistance of the molded shell 352 and internal parts thereof is improved, meanwhile, the creep force is reduced, the strength is high, the weight of the whole gear motor is further reduced, the use experience of a user is improved, moreover, the iron plate and the molded shell 352 are made of different materials, the friction damage between the iron plate and the molded shell is reduced, the strength of the cover plate 351 is ensured, and the cost is reduced.

It should be noted that the cover plate 351 covers the opening of the installation cavity, and the periphery of the cover plate 351 and the molded case 352 may be detachably connected by bolts, and in addition, may be connected by welding, gluing, or the like, which is not particularly limited in this embodiment. In addition, the molding shell 352 and the cover plate 251 may be both made of engineering plastics or both formed of metals, which is not particularly limited in this embodiment.

While the preferred embodiments of the present utility model have been illustrated and described, the present utility model is not limited to the examples, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims

1. The gear motor comprises a gear housing (110) and a motor housing (120) which are sequentially connected from top to bottom, wherein a turbine (111) is arranged in the gear housing (110), and a stator assembly and a rotor (121) are arranged in the motor housing (120), and the gear motor is characterized in that: comprising the following steps:

an output shaft (130) having a helical tooth (210) provided on an outer wall thereof, the helical tooth being engageable with the turbine (111);

the transmission shaft (140) can synchronously rotate with the rotor (121), the upper end of the transmission shaft (140) is detachably and synchronously connected with the lower end of the output shaft (130), the outer diameter of the transmission shaft (140) is smaller than that of the output shaft (130), and the rotation axis of the rotor (121), the central line of the output shaft (130) and the central line of the transmission shaft (140) are mutually overlapped.

2. The gear motor according to claim 1, wherein: the bottom surface of output shaft (130) is equipped with mounting hole (131), the upper end of transmission shaft (140) with mounting hole (131) interference connection.

3. The gear motor according to claim 2, characterized in that: the transmission shaft (140) extends into the spline connection between the outer wall of the part of the mounting hole (131) and the inner wall of the mounting hole (131).

4. The gear motor according to claim 2, characterized in that: one side of the transmission shaft (140) far away from the output shaft (130) is connected with the motor shell (120) through a first bearing (151), and the outer wall of the output shaft (130) corresponding to the mounting hole (131) is connected with the motor shell (120) through a second bearing (152).

5. The gear motor according to claim 4, wherein: the speed reduction shell (110) is provided with a rubber piece (153), the rubber piece (153) is provided with a through hole extending up and down, and the upper end of the output shaft (130) extends into the through hole.

6. The gear motor according to claim 1, wherein: the stator assembly includes two magnets (320) disposed on both sides of the rotor (121), respectively.

7. The gear motor according to claim 6, wherein: still including top-down in proper order commutator (310), carbon brush, mounting panel (160), hall plate (330), magnetic circle (340) and tail-hood (170), tail-hood (170) are connected the lower extreme of motor casing (120), mounting panel (160) cover in the lower extreme opening of motor casing (120), the carbon brush with hall plate (330) are connected respectively the up end and the lower terminal surface of mounting panel (160), commutator (310) cover be in on transmission shaft (140) and support downwards in the carbon brush, magnetic circle (340) cover is in the lower extreme of transmission shaft (140) and up just to hall plate (330).

8. The gear motor according to claim 6, wherein: the outer wall of the motor shell (120) is coated with a magnetism increasing ring (410), a notch is arranged on the magnetism increasing ring (410), and the notch is opposite to any one magnet (320).

9. The gear motor according to claim 1, wherein: the speed reduction shell (110) comprises a cover plate (351) and a forming shell (352), wherein a mounting cavity is formed by the forming shell (352), the turbine (111) is located in the mounting cavity, the cover plate (351) is connected with the forming shell (352) and covers an opening of the mounting cavity, and the forming shell (352) is made of engineering plastics.

10. The gear motor of claim 9, wherein: the cover plate (351) is an iron cover.