CN214141349U

CN214141349U - Transmission gear set, gear box and motor

Info

Publication number: CN214141349U
Application number: CN202022047256.1U
Authority: CN
Inventors: 罗永鸿; 宋仲明; 李臻; 易恭才; 闫鲲
Original assignee: Shenzhen Power Motor Industrial Co Ltd
Current assignee: Shenzhen Power Motor Industrial Co Ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-09-07
Anticipated expiration: 2030-09-17

Abstract

The utility model relates to a drive gear group, gear box, motor, including sun gear, a plurality of planet wheel, fixed ring gear and rotation ring gear, the sun gear set up in fixed ring gear middle part, just the rotation axis of sun gear with the coincidence of the central axis of fixed ring gear, a plurality of planet wheel centers on the sun gear sets up, the rotation ring gear set up in fixed ring gear one side, just rotate the ring gear with fixed ring gear all with a plurality of the cooperation of planet wheel meshing. According to the transmission gear set, the planetary gear train is formed by combining the sun gear arranged in the middle and the planetary gears arranged on the periphery, the fixed inner gear ring and the rotating inner gear ring are further arranged on the periphery of the planetary gears, the rotating outer gear ring is indirectly driven to rotate through the sun gear and the planetary gears, the transmission ratio is increased, and self-locking can be realized.

Description

Transmission gear set, gear box and motor

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to drive gear group, gear box, motor.

Background

Small motor gearboxes have found widespread use in general purpose mechanical devices. The electric clothes airing machine has the advantages of small size, convenience in transmission and the like, and is widely applied to the electric clothes airing machine, two wire wheels are arranged in a gear box of the electric clothes airing machine of the current household appliance, and the wire wheels are controlled to take up and pay off pull wires through turbine transmission, so that the whole size of the motor is large, the mass of the motor is heavy, the size of the electric clothes airing machine is large, the effective use area of the electric clothes airing machine is reduced, the cost of the gear box with double wires is high, and the total transmission ratio cannot be effectively improved; and self-locking cannot be realized, and after the motor is powered off, the heavy object on the clothes airing machine naturally droops, so that the gear tends to rotate in the opposite direction, and the service life of the motor is further influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, there is a need to provide a transmission gear set, which solves the problems of small transmission ratio and failure to realize self-locking;

in view of the above situation, there is a need for a gear box that solves the problems of large motor occupation space, small transmission ratio and incapability of realizing self-locking caused by a double-wire wheel;

in view of the above, it is necessary to provide a motor to solve the problem of small transmission ratio.

A transmission gear set comprises a sun gear, a plurality of planet gears, a fixed inner gear ring and a rotating inner gear ring, wherein the sun gear is arranged in the middle of the fixed inner gear ring, the rotation axis of the sun gear is coincident with the central axis of the fixed inner gear ring, the planet gears surround the sun gear, the rotating inner gear ring is arranged on one side of the fixed inner gear ring, and the rotating inner gear ring and the fixed inner gear ring are both in meshing fit with the planet gears.

Preferably, the number of teeth of the sun gear, the plurality of planet gears, the fixed inner gear ring and the rotating inner gear ring is as follows: 15: 22: 57: 60.

preferably, a plurality of planet wheel both sides are provided with two sets of planet carriers, and a plurality of the planet wheel passes through the pivot rotatable setting in two sets of between the planet carrier.

Preferably, a driving shaft is arranged on the sun gear.

A gear box comprises a wire wheel, an upper cover and a lower cover, wherein the wire wheel and a rotating inner gear ring are integrally arranged, the rotating inner gear ring is arranged on the inner side wall of the wire wheel, the upper cover is arranged on the wire wheel, and the lower cover and the upper cover are matched to assemble a transmission gear set and the wire wheel into the gear box.

Preferably, the outer side wall of the wire wheel is provided with a plurality of groups of thread grooves with the same thread turning direction, and top notches of the thread grooves are circularly arrayed at the top of the wire wheel.

A motor comprises a transmission assembly and a driving motor, wherein the driving motor drives a sun gear to rotate through the transmission assembly.

Preferably, the transmission assembly comprises three groups of gears with diameters sequentially meshed from small to large, the smallest group of gears is arranged on the driving shaft of the driving motor, and the largest group of gears is arranged on the driving shaft.

The transmission gear set forms a planetary gear train by combining the sun gear arranged in the middle and the planet gears arranged on the periphery, the periphery of the planet gears is also provided with the fixed inner gear ring and the rotating inner gear ring, and the rotating outer gear ring is indirectly driven to rotate by the sun gear and the planet gears, so that the transmission ratio is increased and self-locking can be realized;

the gear box is provided with the wire wheel, the rotating inner gear ring is arranged in the wire wheel, so that the wire wheel is driven to rotate, the original two wire wheels can be replaced by only one wire wheel to work, and the occupied space is smaller;

the motor indirectly drives the transmission gear set through the transmission assembly, and the transmission ratio is further increased.

Drawings

Fig. 1 is a schematic structural diagram of a motor in the present invention;

FIG. 2 is a schematic structural view of a middle gear box and a transmission gear set according to the present invention;

FIG. 3 is a schematic structural view of a gearbox and drive assembly according to the present invention;

FIG. 4 is a schematic structural view of the wire wheel of the present invention;

FIG. 5 is a schematic structural view of the wire wheel of the present invention;

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is an enlarged schematic view of region a in fig. 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, with reference to the accompanying drawings and embodiments, will explain the transmission gear set, the gear box and the motor in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "central," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application will be understood by those of ordinary skill in the art from the specific context.

Referring to fig. 2, the present invention relates to a transmission gear set, which includes a sun gear 420, a plurality of planetary gears 410, a fixed ring gear 450 and a rotating ring gear 460, wherein the sun gear 420 is disposed in the middle of the fixed ring gear 450, the rotation axis of the sun gear 420 coincides with the central axis of the fixed ring gear 450, the plurality of planetary gears 410 are disposed around the sun gear 420, the rotating ring gear 460 is disposed on one side of the fixed ring gear 450, and the rotating ring gear 460 and the fixed ring gear 450 are engaged with the plurality of planetary gears 410.

In this embodiment, the sun gear 420 rotates to drive the planet gear 410 to revolve around the sun gear 420, the planet gear 410 rotates while revolving, the number of teeth of the rotating inner gear ring 460 is greater than that of the fixed inner gear ring 450, so that the rotating inner gear ring 460 is driven to rotate when the planet gear 410 rotates, the transmission ratio is greatly increased, and self-locking can be realized.

In one embodiment, there are three sets of planet gears 410, the circle is arranged on the periphery of the sun gear 420, the planet gears 410 and the sun gear 420 are engaged, the fixed inner gear ring 450 is sleeved on the outer ring of the three sets of planet gears 410, and the three sets of planet gears 410 can rotate and revolve around the sun gear 420 on the fixed inner gear ring 450.

Specifically, the number of teeth of the sun gear 420, the planet gear 410, the fixed inner gear ring 450 and the rotating inner gear ring 460 is as follows: 15: 22: 57: 60.

when the gear number matching ratio is adopted, a sufficiently large transmission ratio can be obtained, the occupied area of the transmission gear set is not influenced, and the transmission gear set can be applied to a smaller motor space.

Specifically, two sets of planetary carriers 430 are disposed on two sides of the plurality of planetary gears 410, and the plurality of planetary gears 410 are rotatably disposed between the two sets of planetary carriers 430 through a rotating shaft.

In the embodiment, the planet carrier 430 fixes the relative position between the planet wheels 410, so that the planet wheels 410 are prevented from being separated from the original working position, and the transmission gear set is prevented from having matching defects.

Specifically, the sun gear 420 is provided with a driving shaft 440.

In this embodiment, an external driving mechanism can transmit driving force to the transmission gear set by connecting the driving shaft 440 to control the rotation of the sun gear 420.

Referring to fig. 1, 4, 5, 6, and 7, a gearbox includes a pulley 510, an upper cover 100, and a lower cover 200, the pulley 510 and the inner rotating ring gear 460 are integrally disposed, the inner rotating ring gear 460 is disposed on the inner sidewall of the pulley 510, the upper cover 100 is covered on the pulley 510, and the lower cover 200 and the upper cover 100 cooperate to assemble the transmission gear set and the pulley 510 into a gearbox.

In this embodiment, through assembling drive gear group in the gear box, conveniently protect drive gear group, and make drive gear group work more stable, avoid outside dust particle to corrode and cause the deposition to drive gear group in getting into drive gear group, influence drive gear group's performance.

Specifically, a plurality of groups of thread grooves 520 with the same thread turning direction are arranged on the outer side wall of the pulley 510, and top notches of the plurality of groups of thread grooves 520 are circularly arrayed at the top of the pulley 510.

In this embodiment, the wire wheel 510 is provided with the thread groove 520 on the outer side wall, and the stay wires are sequentially arranged in different thread grooves 520, so that different stay wires can be correspondingly installed in different thread grooves 520, the stay wires can be collected or placed without being affected, the stay wires are more conveniently arranged, and the problem that the stay wires are stacked when collected or placed to cause knotting or are not beneficial to placing in the later operation is avoided.

Further, the fit clearance between the wire wheel 510 and the upper cover 100 is smaller than the wire diameter of the pull wire.

In the present embodiment, since the fitting gap between the pulley 510 and the upper cover 100 is smaller than the wire diameter of the wire, the wire does not fall off from the gap between the pulley 510 and the upper cover 100.

Specifically, the fit clearance between the pulley 510 and the upper cover 100 is set to be 0.3 to 1.5 mm.

Further, the thread on the thread groove 520 adopts a tapered opening structure.

In this embodiment, the thread on the thread groove 520 abandons the traditional perpendicular design's wire casing notch, changes into the tapering open structure that notch outside width is great, notch inboard width reduces gradually, when receiving the line, has increased the tolerance to the notch position when acting as go-between gets into the notch, avoids acting as go-between to the collision and the friction of notch rubberizing, increases the life of line wheel 510.

Further, the top of the wire wheel 510 is provided with a plurality of ribs radially distributed from the center to the outside.

In this embodiment, ribs are provided on the top of the wire wheel 510 to reinforce the wire wheel 510 cover.

Further, a wire pulling installation groove 530 is arranged at the top of the wire wheel 510 corresponding to the top opening of the thread groove 520, and the wire pulling installation groove 530 is communicated with the top opening of the thread groove 520.

In this embodiment, the wire installation groove 530 is provided, and the wire installation groove 530 is separately designed from the thread groove 520, one end of the wire is fixed in the wire installation groove 530, and the other end of the wire is spirally wound downwards along the thread groove 520 through the top opening of the thread groove 520, so that the wire fixing device is not provided at the top opening of the thread groove 520. Because the top opening of the thread groove 520 is arranged on the periphery of the wire wheel 510, the centripetal force applied to the wire pulling fixing equipment is large and difficult to stabilize, the centripetal force applied to the cover plate of the wire wheel 510 by the wire pulling fixing equipment can be increased, and the service life of the wire wheel 510 is shortened.

Specifically, a shaft through hole is formed in the center of the cover plate of the reel 510, and a stepped nut mounting groove is formed above the shaft through hole.

Specifically, a wire fixing member is disposed in the wire mounting groove 530.

In this embodiment, the wire fixing component may be a tool with a fixing function, such as: gluing, squeezing, occluding, etc. with means for securing the pull wire.

Specifically, the thread grooves 520 are provided in two sets, and the two sets of thread grooves 520 are distributed in 180 ° opposition.

Referring to fig. 1 and 3, the motor includes a transmission assembly 600 and a driving motor 300, wherein the driving motor 300 drives the sun gear 420 to rotate through the transmission assembly 600.

In this embodiment, in order to further increase the transmission ratio, a transmission assembly 600 is provided, and the driving motor 300 transmits the driving force to the transmission gear set through the transmission assembly 600, so as to rotate the pulley 510, and thus the pulling wire is wound or unwound.

Specifically, the transmission assembly 600 includes three sets of gears with diameters sequentially meshed from small to large, the smallest set of gears is disposed on the driving shaft 440 of the driving motor 300, and the largest set of gears is disposed on the driving shaft 440.

In this embodiment, through the diameter ratio that sets up between the three group gears, can adjust the total gear ratio of this motor the utility model discloses in, can be applicable to the draw on the clothes hanger that dries in the air or in needing great tensile motor with the higher than that the gear ratio set up.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.

Claims

1. A transmission gear set is characterized in that: the sun gear (420) is arranged in the middle of the fixed inner gear ring (450), the rotation axis of the sun gear (420) is coincident with the central axis of the fixed inner gear ring (450), the planet gears (410) are arranged around the sun gear (420), the rotating inner gear ring (460) is arranged on one side of the fixed inner gear ring (450), and the rotating inner gear ring (460) and the fixed inner gear ring (450) are meshed and matched with the planet gears (410).

2. The drive gear set of claim 1, wherein: the gear number ratio of the sun gear (420), the plurality of planet gears (410), the fixed inner gear ring (450) and the rotating inner gear ring (460) is as follows: 15: 22: 57: 60.

3. the drive gear set of claim 1, wherein: a plurality of planet wheel (410) both sides are provided with two sets of planet carrier (430), and a plurality of planet wheel (410) pass through the pivot rotatable setting in two sets of between planet carrier (430).

4. The drive gear set of claim 1, wherein: the sun gear (420) is provided with a driving shaft (440).

5. A gearbox comprising the drive gear set of any of claims 1 to 4, wherein: the gear box assembly comprises a wire wheel (510), an upper cover (100) and a lower cover (200), wherein the wire wheel (510) and a rotating inner gear ring (460) are integrally arranged, the rotating inner gear ring (460) is arranged on the inner side wall of the wire wheel (510), the upper cover (100) is arranged on the wire wheel (510) in a covering mode, and the lower cover (200) is matched with the upper cover (100) to assemble a transmission gear set and the wire wheel (510) into a gear box.

6. The gearbox of claim 5, wherein: the outer side wall of the wire wheel (510) is provided with a plurality of groups of thread grooves (520) with the same thread turning direction, and the top notches of the thread grooves (520) are circularly arrayed at the top of the wire wheel (510).

7. An electric machine comprising a gearbox according to any of claims 5 to 6, wherein: the solar energy power generation device comprises a transmission assembly (600) and a driving motor (300), wherein the driving motor (300) drives the sun gear (420) to rotate through the transmission assembly (600).

8. The electric machine of claim 7, wherein: the transmission assembly (600) comprises three groups of gears with diameters sequentially meshed from small to large, the smallest group of gears is arranged on a driving shaft (440) of the driving motor (300), and the largest group of gears is arranged on the driving shaft (440).