Motor connecting piece adaptive to different motor shaft diameters, speed reducer and assembly structure of speed reducer
By designing the motor connector with step holes in the motor connector, the problem of insufficient strength when the motor shaft matches the sun gear is solved, and the matching of different motor shaft diameters is achieved, which improves the strength and convenience of the motor connector.
Patent Information
- Application Number
- CN202323405981.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-14
AI Technical Summary
In a planetary gear reducer, when the inner hole of the sun gear matches the motor shaft, if the diameter of the motor shaft is small, the distance between the inner hole and the tooth root circle will be too close, and the strength of the gear cannot be guaranteed, and if it cannot be matched directly, it will forcefully Adjusting the inner hole will affect the coordination between the motor shaft and the sun gear.
Design a motor connection piece, including a sun gear, a connecting boss at one end and a mounting boss at a distance, a step hole is provided in the mounting boss, and the step hole includes multiple mounting holes with different diameters, holes near the direction of the sun gear The diameter is smaller than the hole diameter far away from the direction to accommodate different motor shaft diameters, connecting the boss and the step hole coaxially, ensuring the interference fit between the motor shaft and the installation hole.
The design can adapt to different motor shaft diameters, improves the strength of the sun gear, simplifies the processing and use process, and reduces costs without changing the sun gear.
Smart Images
Figure CN222192040U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor transmission, in particular to a motor connecting piece adapted to motors with different shaft diameters. Background Art
[0002] In a planetary gear reducer, when the distance from the inner hole of the sun gear to the root circle of the tooth is large enough, the inner hole of the sun gear is usually directly connected to the motor shaft, and the inner hole of the sun gear and the motor shaft have an interference fit. When the diameter of the motor shaft is constant, if the outer diameter of the sun gear is small, the inner hole will not match the motor shaft. If the inner hole is forced to match the diameter of the motor shaft, the distance from the inner hole of the sun gear to the root circle of the tooth will be very close, and the strength of the gear cannot be guaranteed. Utility Model Content
[0003] In view of the above-mentioned technical problems, the purpose of the utility model is to provide a motor connector adapted to different motor shaft diameters, which has a simple structure and is adapted to different motor shafts.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A motor connector adapted to different motor shaft diameters comprises a sun gear, a connecting boss being provided at one end of the sun gear, a mounting boss being provided at the end of the connecting boss away from the sun gear, a stepped hole being provided in the mounting boss for connecting to the motor shaft, an opening of the stepped hole being flush with an end face of the mounting boss, the stepped hole comprising a plurality of mounting holes which are interconnected and have different diameters, wherein the diameter of the mounting hole close to the sun gear is smaller than the diameter of the mounting hole away from the sun gear, and the sun gear, the connecting boss and the stepped hole are coaxial.
[0006] Preferably, the diameter of any mounting hole is not less than the root diameter of the sun gear, or
[0007] The diameter of the mounting hole adjacent to the connecting boss is smaller than the tooth root circle diameter of the sun gear, and the difference is less than 1 mm.
[0008] Preferably, the diameter of the mounting boss is larger than the diameter of the connecting boss.
[0009] Preferably, the connecting boss is a frustum, and the outer diameter of the frustum is less than or equal to the root circle diameter of the sun gear.
[0010] Preferably, the connecting boss is a solid gear structure, and the root circle diameter of the solid gear structure is consistent with the root circle diameter of the sun gear.
[0011] Preferably, the number of gear teeth of the solid gear structure is equal to the number of gear teeth of the sun gear, and the diameter of the tooth top circle of the solid gear structure is smaller than the diameter of the tooth top circle of the sun gear.
[0012] A reducer comprises the above-mentioned motor connector adapted to different motor shaft diameters, and also comprises a planetary carrier, an input flange, an output flange, and an output shaft; a planetary gear is arranged in the planetary carrier, and the sun gear of the motor connector passes through the input flange and engages with the planetary gear; one end of the output shaft is connected to the planetary carrier, and the other end passes through the output flange.
[0013] Preferably, the connecting boss and the mounting boss of the motor connector are located in the input flange, a motor mounting hole is formed at one end of the input flange away from the planetary carrier, and the maximum size of the stepped hole of the motor connector is smaller than the size of the motor mounting hole.
[0014] A reducer and motor assembly structure, the motor comprises a motor shaft, the reducer is the above-mentioned reducer, the motor shaft passes through the input flange and is interference fit with at least one mounting hole of the motor connector.
[0015] Preferably, the diameter of the motor shaft is not less than the root circle diameter of the sun gear of the motor connector, or the diameter of the motor shaft is less than the root circle diameter of the sun gear of the motor connector, and the difference between the root circle diameter and the diameter of the motor shaft is less than 1 mm.
[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0017] The utility model is adapted to a motor connecting piece with different motor shaft diameters and includes a sun gear, a connecting boss is provided at one end of the sun gear, a mounting boss is provided at the end of the connecting boss away from the sun gear, a stepped hole for connecting with the motor shaft is provided in the mounting boss, the opening of the stepped hole is flush with the end face of the mounting boss, the stepped hole includes a plurality of mounting holes which are interconnected and have different diameters, the diameter of the mounting hole close to the sun gear is smaller than the diameter of the mounting hole away from the sun gear so as to adapt to connection with motor shafts of different diameters, without replacing the sun gear, which is beneficial to improving the strength of the sun gear, and is simpler and more convenient to process and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:
[0019] Attached Figure 1 A three-dimensional diagram of the motor connector of the utility model adapted to different motor shaft diameters;
[0020] Attached Figure 2 It is a left view of the motor connector of the utility model adapted to different motor shaft diameters;
[0021] Attached Figure 3 For attachment Figure 2 AA section view;
[0022] Attached Figure 4 It is a schematic diagram of the reducer of the utility model.
[0023] Among them: 1. sun gear; 2. connecting boss; 3. mounting boss; 31. stepped hole; 4. planetary gear; 5. inner ring gear; 6. planetary carrier; 7. output shaft; 8. input flange; 9. output flange; 10. motor mounting hole. DETAILED DESCRIPTION
[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0026] As attached Figure 1-3 The utility model is shown as a motor connector adapted to different motor shaft diameters, including a sun gear 1, a connecting boss 2 at one end of the sun gear 1, a mounting boss 3 at the end of the connecting boss 2 away from the sun gear 1, the diameter of the mounting boss 3 is larger than the diameter of the connecting boss 2, a stepped hole 31 for connecting to the motor shaft is processed inside the mounting boss 3, the opening of the stepped hole 31 is flush with the end face of the mounting boss 3, and the stepped hole 31 includes a plurality of mounting holes that are interconnected and have different diameters, so as to adapt to motor shafts of different diameters. Among them, the diameter of the mounting hole close to the sun gear 1 is smaller than the diameter of the mounting hole away from the sun gear 1, and the sun gear 1, the connecting boss 2 and the stepped hole 31 are coaxial.
[0027] The diameter of any mounting hole is not less than the root circle diameter of the sun gear 1 , or the diameter of the mounting hole adjacent to the connecting boss 2 is less than the root circle diameter of the sun gear 1 , and the difference is less than 1 mm.
[0028] In this embodiment, the connecting boss 2 is a truncated cone, and the outer diameter of the truncated cone is less than or equal to the root circle diameter of the sun gear 1. In other embodiments, the connecting boss 2 can be a solid gear structure, the root circle diameter of the solid gear structure is consistent with the root circle diameter of the sun gear 1, the number of teeth of the solid gear structure is equal to that of the sun gear 1, and the addendum circle diameter of the solid gear structure is smaller than the addendum circle diameter of the sun gear 1.
[0029] As attached Figure 4 The figure shows a reducer of the utility model, including the above-mentioned motor connector adapted to different motor shaft diameters, and also including a planet carrier 6, an input flange 8, an output flange 9, and an output shaft 7. A planetary gear 4 is installed in the planet carrier 6, and the sun gear 1 of the motor connector passes through the input flange 8 to mesh with the planetary gear 4. One end of the output shaft 7 is connected to the planet carrier 6, and the other end passes through the output flange 9. The connecting boss 2 and the mounting boss 3 of the motor connector are located in the input flange 8, and a motor mounting hole 10 is opened at one end of the input flange 8 away from the planet carrier 6, and the maximum size of the stepped hole 31 of the motor connector is smaller than the size of the motor mounting hole 10.
[0030] The utility model discloses an assembly structure of a reducer and a motor, wherein the motor includes a motor shaft, which passes through an input flange 8 of the reducer and is interference-fitted with at least one mounting hole of a motor connector. The diameter of the motor shaft is not less than the root diameter of the sun gear 1 of the motor connector, or the diameter of the motor shaft is less than the root diameter of the sun gear 1 of the motor connector, and the difference between the root diameter and the diameter of the motor shaft is less than 1 mm. The motor transmits power to the sun gear 1 through the motor shaft, and the sun gear 1 drives the planetary gear 4 to rotate, and the planetary gear 4 rotates around the inner gear ring 5 to transmit power to the planetary carrier 6, and the inner gear ring 5 is fixed, and the output shaft 7 and the planetary carrier 6 are connected by interference fit, thereby driving the rotation of the output shaft and further driving the components connected to the output shaft 7 to move.
[0031] The motor connector adapted to different motor shaft diameters of the utility model is suitable for use when the motor shaft diameter is larger than the diameter of the sun gear 1 and it is not suitable to open a hole on the sun gear 1, thereby improving the strength of the sun gear 1. The diameters of the stepped inner hole 31 and the stepped outer hole 32 are processed according to the diameter of the motor shaft. The stepped inner hole 31 and the stepped outer hole 32 can correspond to different motor shafts without replacing the sun gear, and are easy to use and low in cost.
[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A motor connector adapted to different motor shaft diameters, characterized in that: The invention comprises a sun gear (1), wherein one end of the sun gear (1) is provided with a connecting boss (2), and the end of the connecting boss (2) away from the sun gear (1) is provided with a mounting boss (3), wherein a stepped hole for connecting with a motor shaft is provided in the mounting boss (3), wherein the opening of the stepped hole is flush with the end surface of the mounting boss, and wherein the stepped hole comprises a plurality of mounting holes which are interconnected and have different diameters, wherein the diameter of the mounting hole close to the sun gear is smaller than the diameter of the mounting hole away from the sun gear, and the sun gear (1), the connecting boss (2) and the stepped hole are coaxial.
2. The motor connector adapted to different motor shaft diameters according to claim 1, characterized in that: The diameter of any mounting hole (31) is not less than the root diameter of the sun gear (1), or The diameter of the mounting hole (31) adjacent to the connecting boss is smaller than the tooth root diameter of the sun gear (1), and the difference is less than 1 mm.
3. The motor connector adapted to different motor shaft diameters according to claim 1, characterized in that: The diameter of the mounting boss (3) is greater than the diameter of the connecting boss (2).
4. The motor connector adapted to different motor shaft diameters according to claim 1, characterized in that: The connecting boss is a frustum, and the outer diameter of the frustum is less than or equal to the root circle diameter of the sun gear (1).
5. The motor connector adapted to different motor shaft diameters according to claim 1, characterized in that: The connecting boss is a solid gear structure, and the root circle diameter of the solid gear structure is consistent with the root circle diameter of the sun gear (1).
6. The motor connector adapted to different motor shaft diameters according to claim 5, characterized in that: The number of gear teeth of the solid gear structure is equal to that of the sun gear, and the diameter of the tooth top circle of the solid gear structure is smaller than the diameter of the tooth top circle of the sun gear.
7. A reducer, characterized in that: It comprises a motor connector adapted to different motor shaft diameters as described in any one of claims 1-6, and also comprises a planetary carrier, an input flange, an output flange, and an output shaft; a planetary gear is arranged in the planetary carrier, and the sun gear of the motor connector passes through the input flange and engages with the planetary gear; one end of the output shaft is connected to the planetary carrier, and the other end passes through the output flange.
8. The reducer according to claim 7, characterized in that: The connecting boss and the mounting boss of the motor connector are located in the input flange. A motor mounting hole is formed at one end of the input flange away from the planet carrier. The maximum size of the stepped hole of the motor connector is smaller than the size of the motor mounting hole.
9. An assembly structure of a reducer and a motor, wherein the motor includes a motor shaft, characterized in that: The reducer is the reducer according to claim 7 or 8, and the motor shaft passes through the input flange and is interference fit with at least one mounting hole of the motor connector.
10. The assembly structure of the reducer and the motor according to claim 9, characterized in that: The diameter of the motor shaft is not less than the root diameter of the sun gear of the motor connector, or The diameter of the motor shaft is smaller than the root circle diameter of the sun gear of the motor connector, and the difference between the root circle diameter and the diameter of the motor shaft is less than 1 mm.