CN210440534U - Tubular motor reducer with improved gear barrel structure - Google Patents

Abstract

The utility model relates to the technical field of speed reducers, in particular to a tubular motor speed reducer with an improved gear cylinder structure, which comprises a cylinder shell, a front cover, a rear cover, a planetary reduction gear mechanism, an input shaft and an output shaft; the planetary reduction gear mechanism comprises an inner gear ring, a gear bracket, a sun gear, a planet gear and a bearing; the inner gear ring and the bearing are fixedly arranged in the barrel shell, a gap is reserved between the outer ring of the inner gear ring and the outer ring of the bearing and the inner ring of the barrel shell, the inner gear ring is adjacent to the bearing and is abutted against the outer ring of the bearing, and resin is injected among the inner gear ring, the bearing and the barrel shell; the internal elements of the speed reducer do not have the conditions of axial vibration and radial vibration, so that the problem of tooth surface and tooth guo abrasion of the planetary speed reducer caused by the axial vibration and the radial vibration of the internal elements is solved; meanwhile, the reducer removes the limitation that the inner diameter of the inner gear ring is inevitably larger than the outer diameter of the gear support, so that the design of the reducer is more flexible and free.

Description

Tubular motor reducer with improved gear barrel structure

Technical Field

The utility model relates to a reduction gear technical field, concretely relates to tubulose motor reduction gear with improved generation tooth section of thick bamboo structure.

Background

The speed reducer, which is a relatively precise machine used for the purpose of reducing the rotational speed and increasing the torque, plays a role of matching the rotational speed and transmitting the torque between the prime mover and the working machine or the actuator. The speed reducer can be divided into a single-stage speed reducer and a multi-stage speed reducer according to different transmission stages; according to the shape of gear, the gear can be divided into a cylindrical gear reducer, a conical gear reducer and a conical-cylindrical gear leading wheel reducer; according to the arrangement form of transmission, the speed reducer can be divided into an expansion type speed reducer, a split flow type speed reducer and a co-feeding shaft type speed reducer. The reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The function of matching the rotation speed and transmitting the torque between the prime mover and the working machine or the actuating mechanism is very extensive in modern machinery.

The tubular motor reducer is used in a tubular motor, a support and a pin in the reducer are connected together in a hard pressing riveting mode and cannot be split, any part is damaged, the whole assembly riveted together can be replaced, the maintenance cost is high, and an improved space is provided.

The tubular motor reducer is used for tubular motor assemblies used in places such as electric sun-shading curtains, electric garage doors, electric roller shutter windows, electric screens and the like, and changes the high speed of a motor into the low speed. The present tubular motor reducer adopts involute planetary gear transmission, usually adopts a plurality of planet gears to transmit load simultaneously, enables power split and reasonably adopts inner gearing, so has a series of advantages: such as compact structure, small volume, light weight, large transmission ratio range, high transmission efficiency, stable operation, synthesis and decomposition of motion, etc. In the transmission process of the tubular motor reducer, the ideal targets are large bearing capacity of a low-speed stage and small noise of a high-speed stage.

The existing tubular motor reducer is a planetary gear reducer, the planetary gear reducer needs a planetary gear to be meshed with a gear cylinder and needs a gear support to be capable of rotating inside the gear cylinder, so that the prior art uses a gear ring with external teeth, the gear ring is meshed with the gear cylinder, then a bearing is installed inside the gear ring, and then the gear support is installed inside the bearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tubular motor reducer with an improved gear barrel structure, the inner element of the reducer has no conditions of axial vibration and radial vibration, and the problem of tooth surface and tooth wear of the planetary reducer caused by the axial and radial vibration of the inner element is solved; meanwhile, the reducer removes the limitation that the inner diameter of the inner gear ring is inevitably larger than the outer diameter of the gear support, so that the design of the reducer is more flexible and free.

To achieve the purpose, the utility model adopts the following technical proposal:

the tubular motor reducer with the improved gear barrel structure comprises a barrel shell, a front cover, a rear cover, a planetary reduction gear mechanism, an input shaft and an output shaft;

the cylinder shell is in a cylinder shape, the front cover is arranged at the front end of the cylinder shell, and the rear cover is arranged at the rear end of the cylinder shell;

the planetary reduction gear mechanism is arranged in the barrel shell, the plurality of planetary reduction gear mechanisms are arranged along the axis of the barrel shell and are sequentially connected in a transmission manner, and the planetary reduction gear mechanism comprises an inner gear ring, a gear support, a sun gear, a planetary gear and a bearing;

the inner gear ring and the bearing are fixedly arranged in the barrel shell, a gap is reserved between the outer ring of the inner gear ring and the outer ring of the bearing and the inner ring of the barrel shell, the inner gear ring is adjacent to the bearing and is abutted against the outer ring of the bearing, and resin is injected among the inner gear ring, the bearing and the barrel shell;

the gear support is rotatably arranged on an inner ring of the bearing, the sun gear is fixedly arranged in the center of one side of the gear support, the planet gears are rotatably arranged on the other side of the gear support, the plurality of planet gears are uniformly distributed around the axis of the gear support, inner teeth are arranged on the inner ring of the inner ring gear, the inner ring gear is sleeved on the outer sides of the planet gears, and the inner ring gear is meshed with the planet gears;

the input shaft penetrates through the front cover and is in transmission connection with the sun gear closest to the front cover, and the output shaft penetrates through the rear cover and is in transmission connection with the gear support closest to the rear cover.

As a preferred scheme of the tubular motor reducer with the improved gear drum structure, the outer wall of the inner gear ring is provided with a plurality of clamping strips which are uniformly distributed around the axis of the inner gear ring, each clamping strip is a long strip which extends along the direction parallel to the axis of the inner gear ring, and the drum shell is provided with a clamping groove which is clamped with each clamping strip.

As a preferable aspect of the tubular motor reducer having the improved gear structure, both sides of the ring gear are provided with first annular flanges extending axially outward along the outer circumferential surface edge of the ring gear, the first annular flanges abutting on the outer ring of the bearing.

As a preferable mode of the tubular motor reducer having the improved gear structure, a side of the gear holder facing the ring gear is provided with a second annular flange extending radially outward, and a side of the second annular flange facing the bearing abuts on an inner ring of the bearing.

As a preferred scheme of the tubular motor reducer with the improved gear barrel structure, the input shaft comprises a sun gear coupler and a round shaft, the sun gear coupler and the round shaft are coaxial, the round shaft is in transmission connection with a sun gear closest to the front cover through the sun gear coupler, and a key groove is formed in the round shaft.

As a preferred scheme of the tubular motor reducer with the improved gear barrel structure, the output shaft comprises a gear support coupler and a square shaft, the gear support coupler and the square shaft are coaxial, and the square shaft is in transmission connection with a gear support closest to the rear cover through the gear support coupler.

The utility model has the advantages that:

the planet wheel is meshed with a sun wheel of an adjacent planet reduction gear mechanism, the input shaft drives the sun wheel to rotate, the sun wheel driving gear bracket rotates in a bearing, the bearing drives the planet wheel to revolve, the planet wheel is meshed with the sun wheel of the adjacent planet reduction gear mechanism to rotate, and the sun wheel of the adjacent planet reduction gear mechanism rotates because of being meshed with the planet wheel, so that the moment is transmitted in sequence, and the function of the planet reducer is realized;

the inner gear ring is abutted with the bearing in sequence, then the front cover and the rear cover limit axial vibration of the inner gear ring and the bearing, and then the inner gear ring, the bearing and the barrel shell are fixedly connected through resin, so that radial vibration of the inner gear ring and the bearing is limited;

1. the internal elements of the speed reducer do not have the conditions of axial vibration and radial vibration, so that the problem of tooth surface and tooth guo abrasion of the planetary speed reducer caused by the axial vibration and the radial vibration of the internal elements is solved;

2. the reducer removes the limitation that the inner diameter of the inner gear ring is necessarily larger than the outer diameter of the gear support, so that the design of the reducer is more flexible and free.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a front view of a tubular motor reducer having an improved gear structure according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is an axial view of an internal structure of a tubular motor reducer having an improved gear structure according to an embodiment of the present invention;

FIG. 4 is a partial enlarged view of FIG. 3 at B;

fig. 5 is an exploded perspective view of a tubular motor reducer having an improved gear structure according to an embodiment of the present invention;

FIG. 6 is a partial enlarged view at C of FIG. 5;

fig. 7 is a first exploded perspective view of a planetary reduction gear mechanism of a tubular motor reducer with an improved gear structure according to an embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at D;

fig. 9 is a perspective exploded view of a planetary reduction gear mechanism of a tubular motor reducer with an improved gear structure according to an embodiment of the present invention;

fig. 10 is a partial enlarged view at E of fig. 9;

in the figure:

1. a cartridge housing; 1a, a clamping groove;

2. a front cover;

3. a rear cover;

4. a planetary reduction gear mechanism; 4a, an inner gear ring; 4a1, card strip; 4a2, a first annular flange; 4b, a gear bracket; 4b1, a second annular flange; 4c, a sun gear; 4d, planet wheels; 4e, a bearing;

5. an input shaft; 5a, a sun gear combiner; 5b, a round shaft; 5b1, keyway;

6. an output shaft; 6a, a gear bracket coupler; 6b, a square shaft;

7. and (3) resin.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 10, a tubular motor reducer with an improved gear structure comprises a cylinder shell 1, a front cover 2, a rear cover 3, a planetary reduction gear mechanism 4, an input shaft 5 and an output shaft 6;

the cylinder shell 1 is in a cylinder shape, the front cover 2 is arranged at the front end of the cylinder shell 1, and the rear cover 3 is arranged at the rear end of the cylinder shell 1;

the planetary reduction gear mechanism 4 is arranged in the barrel shell 1, a plurality of planetary reduction gear mechanisms 4 are arranged along the axis of the barrel shell 1 and are sequentially connected in a transmission manner, and the planetary reduction gear mechanism 4 comprises an inner gear ring 4a, a gear support 4b, a sun gear 4c, a planetary gear 4d and a bearing 4 e;

the inner gear ring 4a and the bearing 4e are both fixedly installed inside the barrel shell 1, a gap is reserved between the outer ring of the inner gear ring 4a and the outer ring of the bearing 4e and the inner ring of the barrel shell 1, the inner gear ring 4a is adjacent to the bearing 4e, the inner gear ring 4a is abutted against the outer ring of the bearing 4e, and resin 7 is injected among the inner gear ring 4a, the bearing 4e and the barrel shell 1;

the gear support 4b is rotatably arranged on an inner ring of the bearing 4e, the sun gear 4c is fixedly arranged in the center of one side of the gear support 4b, the planet gears 4d are rotatably arranged on the other side of the gear support 4b, the planet gears 4d are uniformly distributed around the axis of the gear support 4b, inner teeth are arranged on an inner ring of the inner gear ring 4a, the inner gear ring 4a is sleeved on the outer sides of the planet gears 4d, and the inner gear ring 4a is meshed with the planet gears 4 d;

the input shaft 5 penetrates the front cover 2 and is in driving connection with the sun gear 4c closest to the front cover 2, and the output shaft 6 penetrates the rear cover 3 and is in driving connection with the gear support 4b closest to the rear cover 3.

The outer wall of the ring gear 4a is provided with a plurality of clamping strips 4a1 uniformly distributed around the axis of the ring gear 4a, each clamping strip 4a1 is a long strip extending in the direction parallel to the axis of the ring gear 4a, and the drum shell 1 is provided with a clamping groove 1a clamped with each clamping strip 4a 1.

The clamping groove 1a and the clamping strip 4a1 are clamped, so that the connection between the inner gear ring 4a and the drum shell 1 is enhanced, the inner gear ring 4a is prevented from rotating relative to the drum shell 1, and the acting force of the resin 7 acting on the inner gear ring 4a when the speed reducer works is reduced.

Both sides of the ring gear 4a are provided with first annular flanges 4a2 extending axially outward along the outer circumferential surface edge of the ring gear 4a, the first annular flanges 4a2 abutting on the outer race of the bearing 4 e.

The first annular flange 4a2 allows the ring gear 4a to be in contact with only the outer race of the bearing 4e, preventing friction from occurring between the inner race of the bearing 4e and the ring gear 4a as it rotates.

One surface of the gear holder 4b facing the ring gear 4a is provided with a second annular flange 4b1 extending radially outward, and one surface of the second annular flange 4b1 facing the bearing 4e abuts against the inner race of the bearing 4 e.

The inner gear ring 4a and the bearing 4e abut against each other and are clamped between the front cover 2 and the rear cover 3, so that the possibility of axial movement of the inner gear ring 4a and the bearing 4e is eliminated, the gear support 4b abuts against the inner ring of the bearing 4e through the second annular flange 4b1, so that the gear support 4b eliminates the possibility of axial movement of the gear support 4b relative to the bearing 4e through the second annular flange 4b1, the gear support 4b cannot axially shake, and meanwhile, the second annular flange 4b1 cannot influence the rotation of the inner ring of the bearing 4 e.

The input shaft 5 comprises a sun gear coupler 5a and a circular shaft 5b, the sun gear coupler 5a and the circular shaft 5b are coaxial, the circular shaft 5b is in transmission connection with a sun gear 4c closest to the front cover 2 through the sun gear coupler 5a, and a key groove 5b1 is formed in the circular shaft 5 b.

The speed reducer is in transmission connection with a motor spindle through a round shaft 5b, and the motor spindle transmits torque through keys arranged in key slots 5b 1.

The output shaft 6 comprises a gear support coupler 6a and a square shaft 6b, the gear support coupler 6a and the square shaft 6b are coaxial, and the square shaft 6b is in transmission connection with a gear support 4b closest to the rear cover 3 through the gear support coupler 6 a.

The speed reducer is in transmission connection with a mechanism needing to be driven through a square shaft 6b, and the square surface of the square shaft 6b is used for transmitting torque.

The utility model discloses a theory of operation:

the planet gear 4d is meshed with a sun gear 4c of an adjacent planetary reduction gear mechanism 4, the input shaft 5 drives the sun gear 4c to rotate, the sun gear 4c drives a gear support 4b to rotate in a bearing 4e, the bearing 4e drives the planet gear 4d to revolve, the planet gear 4d is meshed with the sun gear 4c of the adjacent planetary reduction gear mechanism 4 to rotate, the sun gear 4c of the adjacent planetary reduction gear mechanism 4 is meshed with the planet gear 4d to rotate, and the moment is transmitted in sequence in such a way, so that the function of a planetary reducer is realized;

the inner gear ring 4a is abutted with the bearing 4e in sequence, then the front cover 2 and the rear cover 3 limit axial vibration of the inner gear ring 4a and the bearing 4e, then the resin 7 fixedly connects the inner gear ring 4a, the bearing 4e and the barrel shell 1, so that radial vibration of the inner gear ring 4a and the bearing 4e is limited, the speed reducer is different from the traditional tubular motor speed reducer, the conditions of axial vibration and radial vibration are not provided for internal elements of the speed reducer, the problem of tooth surface tooth gouge abrasion of the planetary speed reducer caused by axial vibration and radial vibration of the internal elements is solved, meanwhile, the limitation that the inner diameter of the inner gear ring 4a of the traditional planetary speed reducer is necessarily larger than the outer diameter of the gear support 4b is removed, and the design of the speed reducer is.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims (6)

1. A tubular motor reducer with an improved gear barrel structure is characterized by comprising a barrel shell (1), a front cover (2), a rear cover (3), a planetary reduction gear mechanism (4), an input shaft (5) and an output shaft (6);

the cylinder shell (1) is in a cylinder shape, the front cover (2) is arranged at the front end of the cylinder shell (1), and the rear cover (3) is arranged at the rear end of the cylinder shell (1);

the planetary reduction gear mechanisms (4) are arranged inside the barrel shell (1), the plurality of planetary reduction gear mechanisms (4) are arranged along the axis of the barrel shell (1) and are sequentially connected in a transmission manner, and each planetary reduction gear mechanism (4) comprises an inner gear ring (4a), a gear support (4b), a sun gear (4c), a planet gear (4d) and a bearing (4 e);

the inner gear ring (4a) and the bearing (4e) are fixedly installed inside the barrel shell (1), a gap is reserved between the outer ring of the inner gear ring (4a) and the outer ring of the bearing (4e) and the inner ring of the barrel shell (1), the inner gear ring (4a) is adjacent to the bearing (4e), the inner gear ring (4a) is abutted against the outer ring of the bearing (4e), and resin (7) is injected among the inner gear ring (4a), the bearing (4e) and the barrel shell (1);

the gear support (4b) is rotatably arranged on an inner ring of the bearing (4e), the sun gear (4c) is fixedly arranged at the center of one side of the gear support (4b), the planet gears (4d) are rotatably arranged at the other side of the gear support (4b), the plurality of planet gears (4d) are uniformly distributed around the axis of the gear support (4b), inner teeth are arranged on the inner ring of the inner ring gear (4a), the inner ring gear (4a) is sleeved on the outer sides of the planet gears (4d), and the inner ring gear (4a) is meshed with the planet gears (4 d);

the input shaft (5) penetrates through the front cover (2) and is in transmission connection with a sun gear (4c) closest to the front cover (2), and the output shaft (6) penetrates through the rear cover (3) and is in transmission connection with a gear bracket (4b) closest to the rear cover (3).

2. The tubular motor reducer with improved gear box structure according to claim 1, characterized in that the outer wall of the ring gear (4a) is provided with a plurality of clamping strips (4a1) uniformly distributed around the axis of the ring gear (4a), the clamping strips (4a1) are long strips extending in the direction parallel to the axis of the ring gear (4a), and the box shell (1) is provided with clamping grooves (1a) clamped with each clamping strip (4a 1).

3. A tubular motor reducer with an improved gear barrel structure according to claim 1, characterized in that both sides of the ring gear (4a) are provided with first annular flanges (4a2) extending axially outward along the outer circumferential surface edge of the ring gear (4a), the first annular flanges (4a2) abutting on the outer race of the bearing (4 e).

4. A tubular motor reducer with improved gear barrel structure according to claim 1, characterized in that the face of the gear bracket (4b) facing the inner ring gear (4a) is provided with a second annular flange (4b1) extending radially outward, the face of the second annular flange (4b1) facing the bearing (4e) abutting against the inner ring of the bearing (4 e).

5. The tubular motor reducer with improved gear barrel structure according to claim 1, characterized in that the input shaft (5) comprises a sun gear coupler (5a) and a circular shaft (5b), the sun gear coupler (5a) and the circular shaft (5b) are coaxial, the circular shaft (5b) is in transmission connection with a sun gear (4c) closest to the front cover (2) through the sun gear coupler (5a), and the circular shaft (5b) is provided with a key slot (5b 1).

6. A tubular motor reducer with improved gear barrel structure according to claim 1, characterized in that the output shaft (6) comprises a gear support coupler (6a) and a square shaft (6b), the gear support coupler (6a) and the square shaft (6b) are coaxial, and the square shaft (6b) is in transmission connection with the gear support (4b) closest to the rear cover (3) through the gear support coupler (6 a).

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