CN221170602U - Multistage star gear reduction mechanism - Google Patents

Abstract

The utility model discloses a multistage star-shaped gear reduction mechanism, which comprises a plurality of reduction units connected in an axial transmission way, wherein each reduction unit comprises a base, a first gear, a second gear and a gear cover, the base is in a cylinder shape with one end open and the other end closed, the center of one closed end of the base is provided with a through hole, at least one first gear is rotatably arranged in the base, the gear cover covers the first gear, the second gear is rotatably covered on the gear cover, and the first gear is meshed with the second gear; the second gear of the upper-stage speed reducer unit is meshed with the first gear of the lower-stage speed reducer unit. The utility model realizes gear transmission at a place with space in the axial direction and no space in the direction perpendicular to the axial direction by a plurality of speed reducer units in axial transmission connection, and has small occupied space and larger transmission ratio.

Description

Multistage star gear reduction mechanism

Technical Field

The utility model relates to a multistage star gear reduction mechanism.

Background

The speed reducer plays a role in matching the rotation speed and the transmission torque between the prime motor and the working machine or the actuating mechanism, and is a relatively precise machine, and the purpose of using the speed reducer is to reduce the rotation speed and increase the torque. In a mechanical transmission system, the ratio of the angular speed or the rotating speed of a starting end driving wheel to the rotating speed of a tail end driven wheel is called the transmission ratio of a mechanism. In some occasions, such as a hinge of an electric door, opening and closing control of a solar panel and the like, transmission is carried out along an axial direction, and in order to obtain a larger transmission ratio, a plurality of speed reducers are often required to be combined for use, but when the existing speed reducers are combined for use, connection is inconvenient, the occupied space is large, and the effect is not ideal.

Disclosure of utility model

The utility model aims to provide a multistage star gear reduction mechanism so as to solve the technical problems in the background art.

The technical scheme for realizing the aim of the utility model is as follows: the multistage star-shaped gear reduction mechanism comprises a plurality of reduction units connected in an axial transmission way, wherein each reduction unit comprises a base, a first gear, a second gear and a gear cover, the base is in a cylinder shape with one end open and the other end closed, a through hole is formed in the center of one closed end of the base, at least one first gear is rotatably arranged in the base, the gear cover covers the first gear, the second gear is rotatably covered on the gear cover, and the first gear is meshed with the second gear; the second gear of the upper-stage speed reducer unit is meshed with the first gear of the lower-stage speed reducer unit.

Further, base fixing holes are uniformly formed in the side wall of the base along the axial direction of the base, and bases of adjacent two-stage speed reducer units are connected through the base fixing holes.

Further, two first gears are arranged and symmetrically arranged in the base, and the two first gears are meshed with the second gear.

Further, the base and the gear cover are provided with corresponding gear fixing holes, and two ends of the first gear are rotatably arranged in the gear fixing holes.

Further, the second gear comprises an input part and an output part which are coaxially arranged, an outer ring of the output part is provided with an outer gear ring, a cylindrical cavity with one end closed is arranged on the inner side of the input part, an inner gear ring is arranged on the inner ring of the input part, the inner gear ring is meshed with a first gear of the same-stage speed reducer unit, and the outer gear ring is meshed with the first gear of the next-stage speed reducer unit.

Further, the through hole is sized to allow the output portion of the second gear to pass through.

Further, a gear cover screw hole is formed in the inner bottom surface of the closed end of the base, and the gear cover is matched with the gear cover screw hole through a screw and fixedly connected with the base.

By adopting the technical scheme, the utility model has the following beneficial effects:

(1) The utility model realizes gear transmission at a place with space in the axial direction and no space in the direction perpendicular to the axial direction by a plurality of speed reducer units in axial transmission connection, and has small occupied space and larger transmission ratio.

(2) The gears, the base and the gear cover in each level of speed reducer unit are identical in size, so that simplification of production parts and universality of the parts are realized, the number of dies is reduced, and the cost is greatly saved.

(3) The utility model adopts the two first gears which are symmetrically arranged in the base and meshed with the driving device and the second gear for transmission, the power is balanced and stable, the bearing capacity of the gears is doubled by the symmetrical first gears on both sides, and the service life of the whole mechanism is prolonged.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the base of the present utility model.

Fig. 3 is a side cross-sectional view of the base of the present utility model.

Fig. 4 is a schematic structural view of a second gear of the present utility model.

Fig. 5 is a side cross-sectional view of a second gear of the present utility model.

Fig. 6 is a schematic structural view of the gear cover of the present utility model.

The reference numerals in the drawings are: the gear cover comprises a base 1, a through hole 1-1, a base fixing hole 1-2, a gear fixing hole 1-3, a gear cover screw hole 1-4, a first gear 2, a second gear 3, an outer gear ring 3-1, an inner gear ring 3-2 and a gear cover 4.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the inventive product is used, or those conventionally understood by those skilled in the art, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

Example 1

1-6, The multi-stage star gear reduction mechanism of the present embodiment includes a plurality of reduction gear units connected in an axial drive manner. The speed reducer unit comprises a base 1, a first gear 2, a second gear 3 and a gear cover 4.

Specifically, the base 1 is a cylinder with one end open and the other end closed, the center of one closed end of the base 1 is provided with a through hole 1-1, at least one first gear 2 is arranged, the first gear is rotatably arranged in the base 1, and the gear cover 4 covers the first gear 2. The inner bottom surface of the closed end of the base 1 is provided with a gear cover screw hole 1-4, and the gear cover 4 is fixedly connected with the base 1 through the cooperation of a screw and the gear cover screw hole 1-4. Corresponding gear fixing holes 1-3 are formed in the base 1 and the gear cover 4, and two ends of the first gear 2 are respectively rotatably arranged in the gear fixing holes 1-3 in the base 1 and the gear cover 4. The second gear 3 is rotatably covered outside the gear cover 4, and the first gear 2 is meshed with the second gear 3. When the speed reducer is in first-stage transmission, a driving device is fixed on the outer side of a closed end of the base 1, in the embodiment, a motor is adopted and is fixed on the base 1 through screws, an output gear is fixed on an output shaft of the motor, the output shaft penetrates through the through hole 1-1, a gear on the output shaft is meshed with the first gear 2, the second gear 3 comprises an input part and an output part which are coaxially arranged, a cylindrical cavity with one closed end is arranged on the inner side of the input part, an outer ring gear 3-1 is arranged on an outer ring of the output part, an inner ring gear 3-2 is arranged on an inner ring of the input part, the inner ring gear 3-2 is meshed with the first gear 2 of the same-stage speed reducer, the output part penetrates through the through hole 1-1 on the base 1 in the next-stage speed reducer, and the outer ring gear 3-1 is meshed with the first gear 2 of the next-stage speed reducer.

Base fixing holes 1-2 are uniformly formed in the side wall of the base 1 along the axial direction of the base, and bases 1 of adjacent two-stage speed reducer units are connected through the base fixing holes 1-2.

As the preferred scheme of this embodiment, there are two first gears 2, set up in the base 1 symmetrically, two first gears 2 mesh with second gear 3, the utility model adopts two first gears 2 to set up in the base 1 symmetrically, and mesh with driving device and second gear 3 and transmit, the balanced and stable strength, the first gear 2 of bilateral symmetry makes the bearing capacity of the gear greater than one time too, lengthen the service life of the whole organization.

For ease of understanding, the following transmission of the utility model is described herein: an output shaft of the driving device penetrates through a through hole 1-1 on a base 1 of the first-stage speed reducer unit, an output gear on the output shaft drives a first gear 2 of the first-stage speed reducer unit to rotate, the first gear 2 is meshed with an inner gear ring 3-2 of a second gear 3 of the first-stage speed reducer unit, the second gear 3 is driven to rotate, an output part of the second gear 3 penetrates through the through hole 1-1 of the base 1 of the next-stage speed reducer unit, at the moment, the second gear 3 of the first-stage speed reducer unit becomes a power source of the next-stage speed reducer unit, an outer gear ring 3-1 of the second gear 3 is meshed with the first gear 2 of the next-stage speed reducer unit, the second gear 3 is driven to rotate, and each subsequent stage is driven to rotate.

The utility model realizes gear transmission at a place with space in the axial direction and no space in the vertical direction through the axial transmission connection of the plurality of speed reducer units, such as the hinge of an electric door, the opening and closing control of a solar panel and other occasions, and has small occupied space and larger transmission ratio. The sizes of the gears, the bases and the gear covers in each level of speed reducer unit are identical, so that simplification of production parts and universality of the parts are realized, the number of dies is reduced, and the cost is greatly saved.

While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims (7)

1. A multistage star gear reduction mechanism is characterized in that: the speed reducer comprises a plurality of speed reducer units connected along axial transmission, wherein each speed reducer unit comprises a base (1), a first gear (2), a second gear (3) and a gear cover (4), the base (1) is in a cylinder shape with one end open and the other end closed, a through hole (1-1) is formed in the center of one closed end of the base (1), at least one first gear (2) is arranged in the base (1) in a rotatable mode, the gear cover (4) covers the first gear (2), the second gear (3) is rotatably covered on the outer side of the gear cover (4), and the first gear (2) is meshed with the second gear (3); the second gear (3) of the upper-stage speed reducer unit is meshed with the first gear (2) of the lower-stage speed reducer unit.

2. A multi-stage star gear reduction mechanism according to claim 1, wherein: base fixing holes (1-2) are uniformly formed in the side wall of the base (1) along the axial direction of the base, and bases (1) of adjacent two-stage speed reducer units are connected through the base fixing holes (1-2).

3. A multi-stage star gear reduction mechanism according to claim 1, wherein: the two first gears (2) are symmetrically arranged in the base (1), and the two first gears (2) are meshed with the second gears (3).

4. A multi-stage star gear reduction mechanism according to claim 1, wherein: corresponding gear fixing holes (1-3) are formed in the base (1) and the gear cover (4), and two ends of the first gear (2) are rotatably arranged in the gear fixing holes (1-3).

5. A multi-stage star gear reduction mechanism according to claim 1, wherein: the second gear (3) comprises an input part and an output part which are coaxially arranged, an outer ring of the output part is provided with an outer gear ring (3-1), the inner side of the input part is a cylindrical cavity with one end closed, an inner ring of the input part is provided with an inner gear ring (3-2), the inner gear ring (3-2) is meshed with a first gear (2) of the same-stage speed reducer unit, and the outer gear ring (3-1) is meshed with the first gear (2) of the next-stage speed reducer unit.

6. The multi-stage star gear reduction mechanism of claim 5, wherein: the size of the through hole (1-1) can be used for the output part of the second gear (3) to pass through.

7. A multi-stage star gear reduction mechanism according to claim 1, wherein: the gear cover is characterized in that a gear cover screw hole (1-4) is formed in the inner bottom surface of the closed end of the base (1), and the gear cover (4) is fixedly connected with the base (1) through the cooperation of a screw and the gear cover screw hole (1-4).