Grading type inner gear ring structure for miniature gear box

Abstract

The utility model discloses a grading type inner gear ring structure for a miniature gear box, which comprises a gear ring main body which is arranged to be of an annular ring-shaped structure, and further comprises a mounting end cover used for preventing a gear ring from deforming and a connecting assembly used for meeting the assembly requirement of the gear ring, the mounting end cover is arranged on one side of the gear ring main body, and the connecting assembly is arranged on the other side of the gear ring main body. The gear ring structure has the advantages that the structure is simple, the number of the inner gear ring structures can be adjusted according to the number of stages of a gearbox, only one stage of inner gear ring and one stage of planetary gear need to be added every time one stage of gearbox is added, assembling is convenient, and the gear ring structure is convenient to use. Each stage of inner gear ring is connected and fixed through a connecting assembly to form a split type inner gear ring structure, so that the use requirements of gearboxes of different stages are met, and the split type inner gear ring is suitable for being manufactured by adopting a metal injection molding process, low in production cost, low in machining difficulty, high in production efficiency and capable of meeting the large-batch machining production requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, and particularly relates to a stepped internal gear ring structure for a micro gearbox. Background Art

[0002] In the prior art, a planetary gearbox, also known as a planetary reduction gearbox or a gearbox, has a structure in which multiple planetary gears rotate around a sun gear. It is also a mechanism that reduces the transmission speed ratio and simultaneously increases the motor torque proportionally. As a mechanical transmission component, the gearbox has been widely used due to its high transmission efficiency, compact structure, stable transmission ratio, and long service life. Large gearboxes are widely used in motors and are often used in wind turbines. Its main function is to transmit the power generated by the wind turbine under the action of wind to the generator and increase its speed. This type of gearbox is used for speed increase. Micro gearboxes are also used in children's toys, where the speed of a high-speed motor needs to be reduced. This type of gearbox is used for speed reduction. The internal gear ring structure in the existing micro gearboxes usually adopts an integral structure design. The schematic diagram of the internal gear ring structure in the gearbox in the prior art is shown in Figure 1 and a transmission tooth structure is arranged at a certain depth inside it to meet the transmission requirements of the gearbox. Since it adopts a micro strip structure, the processing difficulty of its internal transmission teeth is relatively large, the production efficiency is relatively low, and it is not suitable for mass production.

[0003] The Chinese utility model patent with the application number 202221617995.2 discloses a high-strength micro planetary reduction gearbox, which includes a planetary reduction gearbox. The planetary reduction gearbox includes a sun gear, planetary gears, an internal gear ring, a housing, a transmission shaft, an output shaft, an output shaft fixing ring, a planetary gear mounting bracket, an output shaft sleeve, a support ring, an oil storage box, a spring, a telescopic rod, and a transmission strip. The inner wall of the housing is provided with an internal gear ring. The transmission shaft penetrates through the back of the housing, and a sun gear is arranged at one end of the transmission shaft. The output shaft fixing ring is arranged on the front of the housing, and an output shaft is arranged on the inner wall of the output shaft fixing ring. A planetary gear mounting bracket is arranged at one end of the output shaft, and planetary gears are respectively arranged at three ends on the back of the planetary gear mounting bracket. However, the internal gear ring in this high-strength micro planetary reduction gearbox adopts an integral structure design. Since it adopts a micro strip structure, the processing difficulty of its internal transmission teeth is relatively large, the production efficiency is relatively low, it cannot be manufactured by metal injection molding process, the production cost is relatively high, it is not suitable for mass production, and its assembly difficulty is relatively high, and it cannot meet the use requirements of different-stage gearboxes. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a stepped internal gear ring structure for a micro gearbox.

[0005] To achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A stepped internal gear ring structure for a micro gearbox, comprising a gear ring body, the gear ring body being arranged in an annular ring structure, and further comprising a mounting end cover for preventing the gear ring from deforming and a connecting component for meeting the assembly requirements of the gear ring. The mounting end cover is arranged on one side of the gear ring body, and the connecting component is configured at the end of the gear ring body.

[0007] The mounting end cover is arranged on one side of the gear ring body and is integrally formed with the gear ring body. The mounting end cover and the gear ring body are coaxially arranged, and an arc-shaped fillet structure is provided at the connection between the mounting end cover and the gear ring body.

[0008] It further comprises a mounting through hole, and the mounting through hole is correspondingly arranged in the middle of the mounting end cover for a planetary gear and penetrates through the mounting end cover.

[0009] The connecting component comprises a connecting boss and a connecting groove. There are several connecting bosses, and several connecting bosses are evenly spaced and arranged at one end of the gear ring body away from the mounting end cover and are integrally formed with the gear ring body. There are several connecting grooves, and several connecting grooves are evenly spaced and arranged on one side of the mounting end cover away from the gear ring body and are integrally formed with the mounting end cover.

[0010] The connecting groove and the connecting boss are correspondingly arranged. The connecting boss is arranged as a hemispherical convex structure, and the connecting groove is correspondingly arranged as an arc-shaped groove structure for the connecting boss.

[0011] Internal transmission teeth are provided inside the gear ring body. There are several groups of transmission teeth, and several groups of transmission teeth are evenly spaced and arranged inside the gear ring body and are integrally formed with the gear ring body.

[0012] The transmission teeth are longitudinally arranged along the inner wall of the gear ring body.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The structure is simple. The number of internal gear ring structures can be adjusted according to the number of stages of the gearbox. For each additional stage of the gearbox, only one additional stage of internal gear ring and planetary gear are required, which is convenient for assembly. The internal gear rings at each stage are connected and fixed through the connecting component to form a split internal gear ring structure, so as to meet the usage requirements of gearboxes with different numbers of stages. It is suitable for being manufactured by the metal injection molding process, with low production cost, low processing difficulty, and high production efficiency, meeting the requirements of mass processing and production. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the internal gear ring structure in a prior art gearbox;

[0016] Figure 2 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the cooperation between the mounting end cover and the ring gear body of the present utility model;

[0018] Figure 4 is a schematic diagram of the cooperation between the connecting protrusion and the ring gear body of the present utility model.

[0019] In the figure: 1, ring gear body; 2, mounting end cover; 3, mounting through hole; 4, connecting boss; 5, connecting groove; 6, transmission teeth. Specific embodiments

[0020] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] A stepped internal ring gear structure for a micro gearbox includes a ring gear body 1, the ring gear body 1 is arranged in an annular ring shape, and further includes a mounting end cover 2 for preventing the ring gear from deforming and a connecting component for meeting the assembly requirements of the ring gear. The mounting end cover 2 is arranged on one side of the ring gear body 1, and the connecting component is configured at the end of the ring gear body 1. The schematic diagram of the overall structure of the present utility model is as Figure 1 shown.

[0022] The mounting end cover 2 is arranged on one side of the ring gear body 1 and integrally formed with the ring gear body 1. The mounting end cover 2 and the ring gear body 1 are coaxially arranged, and an arc-shaped fillet structure is provided at the connection between the mounting end cover 2 and the ring gear body 1. Among them, the mounting end cover 2 is used to jointly form a cylindrical ring gear structure with the ring gear body 1 and can effectively prevent the ring gear body 1 from deforming. The schematic diagram of the cooperation between the mounting end cover 2 and the ring gear body 1 of the present utility model is as Figure 2 shown.

[0023] It further includes a mounting through hole 3. The mounting through hole 3 is arranged corresponding to the planetary gear in the middle of the mounting end cover 2 and penetrates the mounting end cover 2. Among them, the mounting through hole 3 is used as a through hole structure on the mounting end cover 2, so as to provide strain allowance for the mounting end cover 2 and meet the mounting requirements of the planetary gear.

[0024] The connecting component includes a connecting boss 4 and a connecting groove 5. There are several connecting bosses 4, and the several connecting bosses 4 are evenly spaced and arranged at one end of the ring gear body 1 away from the mounting end cover 2 and are integrally formed with the ring gear body 1. There are several connecting grooves 5, and the several connecting grooves 5 are evenly spaced and arranged on one side of the mounting end cover 2 away from the ring gear body 1 and are integrally formed with the mounting end cover 2. The connecting component is matched through the connecting boss 4 and the connecting groove 5 to form a connecting structure at the end of the internal gear ring, so as to meet the connection requirements for the mutual assembly of multiple internal gear rings. Among them, the connecting boss 4 is used as a protruding structure at one end of the internal gear ring, and the connecting groove 5 is used as a groove structure at the other end of the internal gear ring. The connecting boss 4 on a set of internal gear rings is matched with the connecting groove 5 on the next set of internal gear rings to realize the assembly connection between the two sets of internal gear rings. The schematic diagram of the cooperation between the connecting protrusion and the ring gear body 1 of the present utility model is as Figure 3 shown.

[0025] The connecting groove 5 is arranged corresponding to the connecting boss 4. The connecting boss 4 is set as a hemispherical protruding structure, and the connecting groove 5 is set as an arc-shaped groove structure corresponding to the connecting boss 4. Among them, the connecting boss 4 with a hemispherical protruding structure is stably matched with the connecting groove of the arc-shaped groove structure, which is convenient for assembly.

[0026] There are several groups of transmission teeth 6 inside the ring gear body 1. The several groups of transmission teeth 6 are evenly spaced and arranged inside the ring gear body 1 and are integrally formed with the ring gear body 1. The transmission teeth 6 are longitudinally arranged along the inner wall of the ring gear body 1. Among them, the transmission teeth 6 are used as the transmission structure inside the ring gear body 1, which can meet the transmission requirements between the internal gear ring and the planetary gear.

[0027] Among them, when each stage is added to the gearbox, only one stage of internal gear ring and planetary gear need to be added. The assembly between the two can be realized through the cooperation of the connecting bosses 4 and the connecting grooves 5 on two adjacent sets of internal gear rings.

[0028] Working principle:

[0029] The integral strip-shaped internal gear ring in the prior art is divided into a hierarchical cylindrical internal gear ring structure. The connection between each stage of the gear ring is assembled and fixed by the connecting groove 5 and the connecting boss 4, which is convenient for assembly. When each stage is added to the gearbox, only one stage of internal gear ring and planetary gear need to be added. Moreover, the hierarchical internal gear ring structure is suitable for being manufactured by the metal injection molding process, with low production cost and low processing difficulty.

[0030] The beneficial effects of the present utility model are as follows: the structure is simple, and the number of internal gear ring structures can be adjusted according to the number of stages of the gearbox. For each additional stage of the gearbox, only one additional stage of internal gear ring and planetary gears are needed, which is convenient for assembly. The internal gear rings of each stage are connected and fixed through connecting components to form a split internal gear ring structure, so as to meet the usage requirements of gearboxes with different numbers of stages. It is suitable for being manufactured by the metal injection molding process, with low production cost, low processing difficulty, and high production efficiency, meeting the requirements of mass processing and production.

[0031] The above has described in detail an embodiment of the present utility model, but the content is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A hierarchical internal gear ring structure for a micro gear box, comprising a gear ring body (1), wherein the gear ring body (1) is configured as an annular ring structure, characterized in that: It also includes a mounting end cover (2) for preventing the gear ring from deforming and a connecting assembly for meeting the gear ring assembly requirements; the mounting end cover (2) is arranged on one side of the gear ring body (1), and the connecting assembly is arranged at the end of the gear ring body (1).

2. A stepped internal gear ring structure for a micro gear box as claimed in claim 1, characterized in that: The mounting end cover (2) is arranged on one side of the gear ring body (1) and is integrally formed with the gear ring body (1); the mounting end cover (2) and the gear ring body (1) are coaxially arranged; and an arc-shaped fillet structure is provided at the connection between the mounting end cover (2) and the gear ring body (1).

3. A stepped internal gear ring structure for a micro gear box as claimed in claim 2, characterized in that: It also comprises a mounting through hole (3), wherein the mounting through hole (3) is arranged in the middle of the mounting end cover (2) corresponding to the planetary gear and passes through the mounting end cover (2).

4. A stepped internal gear ring structure for a micro gear box as claimed in claim 3, characterized in that: The connection assembly comprises a connection boss (4) and a connection groove (5), wherein a plurality of the connection bosses (4) are provided, and the plurality of the connection bosses (4) are evenly spaced and arranged at one end of the gear ring body (1) away from the mounting end cover (2) and are integrally formed with the gear ring body (1), and a plurality of the connection grooves (5) are provided, and the plurality of the connection grooves (5) are evenly spaced and arranged at one side of the mounting end cover (2) away from the gear ring body (1) and are integrally formed with the mounting end cover (2).

5. A stepped internal gear ring structure for a micro gear box as claimed in claim 4, characterized in that: The connecting groove (5) is arranged corresponding to the connecting boss (4); the connecting boss (4) is arranged as a hemispherical protrusion structure; and the connecting groove (5) is arranged as an arc-shaped groove structure corresponding to the connecting boss (4).

6. A stepped internal gear ring structure for a micro gear box as claimed in claim 5, characterized in that: Transmission teeth (6) are arranged inside the gear ring body (1), and the transmission teeth (6) are provided in a plurality of groups. The plurality of groups of transmission teeth (6) are evenly spaced and arranged inside the gear ring body (1) and are integrally formed with the gear ring body (1).

7. A stepped internal gear ring structure for a micro gear box as claimed in claim 6, characterized in that: The transmission teeth (6) are arranged longitudinally along the inner wall of the gear ring body (1).

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