Gearbox structure
The gearbox is directly fixed by the buckle position and hook structure of the front and rear shells, which solves the problem of low screw fixing efficiency in the prior art, and achieves efficient toolless assembly and structural strength improvement.
Patent Information
- Application Number
- CN202420896002.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The gearbox housing structure in existing household appliances relies on screw fixation, resulting in low production efficiency and the need to use a screwdriver to assist in assembly.
The front and rear shells are fastened and fixed by buckle positions and hooks to form a gear cavity to assemble the planetary gear set, eliminating the screw fixing step and strengthening the structural strength through injection molding.
It realizes direct fixation of the gearbox housing without screws, improves production efficiency, and saves screw usage costs, while reducing assembly difficulty and tool assistance needs.
Smart Images
Figure CN222163415U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a gearbox structure. Background Art
[0002] Some mixing household appliances are often equipped with a reduction gearbox to increase the output torque, make the output rotation more stable, and protect the motor to a certain extent. However, due to the lack of innovation, the reduction gearbox used in these household appliances still uses screws to assemble and fix its shell structure. Therefore, a screwdriver is required when producing the reduction gearbox, which has the disadvantage of low production efficiency.
[0003] Therefore, it is necessary to make further improvements. Utility Model Content
[0004] The utility model aims to overcome the above problems and provides a gearbox structure. The outer shell of the reduction box does not need to be assembled with screws, which greatly improves the production efficiency.
[0005] To achieve the above purpose, the utility model provides a gearbox structure, which includes a front shell, a rear shell and a planetary gear set. The middle positions of the front shell and the rear shell are each provided with an axial hole. The front shell and the rear shell are buckled together to form a gear cavity for assembling the planetary gear set.
[0006] In one or more embodiments, a plurality of buckle positions are distributed circumferentially on the outer edge of the front shell, and buckle hooks for buckling with the buckle positions are provided on the rear shell.
[0007] In one or more embodiments, a guiding slope is provided at the end of the buckle position opposite to the buckle hook.
[0008] In one or more embodiments, the buckle hook and the rear shell are an integrally-molded structure.
[0009] In one or more embodiments, the planetary gear set includes a sun gear, a plurality of planetary gears, an inner ring gear and a planet carrier, the plurality of planetary gears are arranged around the sun gear and meshed with the sun gear, the planetary gears are rotatably mounted on the planet carrier, the inner ring gear is meshed with the plurality of planetary gears, the sun gear has an input shaft, and the planetary gears have an output shaft.
[0010] In one or more embodiments, the planetary frame includes a front frame and a rear frame, the front frame and the rear frame are buckled to form a gear cavity, the planetary gears are arranged in the gear cavity, and the gear cavity is provided with a shaft column for rotationally connecting the planetary gears.
[0011] In one or more embodiments, the output shaft and the input shaft are both provided with shaft connection holes, and the shape of the shaft connection holes is non-circular.
[0012] Compared with the background technology, the utility model has the following effects: the outer shell of the reduction box is composed of a front shell and a rear shell, the assembly of the front shell and the rear shell is realized by snap-fitting, and the shell is directly snap-fitted and fixed during installation, and no screws are used for fixing as a whole, which greatly improves the production efficiency, and the installation does not require the assistance of tools. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is an exploded view of the reduction box of the utility model embodiment;
[0014] Figure 2 It is a schematic structural diagram of a reduction gearbox according to an embodiment of the utility model. DETAILED DESCRIPTION
[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0016] Please see attached Figure 1-2 The present application provides a gearbox structure, which includes a front shell 1, a rear shell 2 and a planetary gear set 3. The front shell 1 and the rear shell 2 are both provided with an axial hole 4 in the middle position. The front shell and the rear shell are buckled together to form a gear cavity for assembling the planetary gear set 3. Specifically, the outer edge of the front shell 1 is circumferentially distributed with a plurality of buckle positions 5, and the rear shell 2 is provided with a buckle hook 6 buckled with the buckle position. The buckle hook and the buckle position are buckled with each other to realize the assembly of the front shell and the rear shell, eliminating the step of screw fixing, which can greatly improve the production and assembly efficiency and save the cost of using screws.
[0017] In order to facilitate the assembly of the front shell and the rear shell, a guiding slope 51 is provided at the end opposite to the buckle position 5 and the buckle hook 6. The guiding slope can guide the buckle hook to buckle with the buckle position, reduce the difficulty of assembling the buckle hook and the buckle position, and further improve the production and assembly efficiency.
[0018] The buckle hook 6 and the rear shell 2 are an integrally-molded structure, thereby enhancing the structural strength of the buckle hook, making it more pliable and enabling repeated assembly and disassembly.
[0019] The planetary gear set 3 includes a sun gear 31, multiple planetary gears 32, an inner ring gear 33 and a planet carrier. The inner ring gear is preferably integrally formed with the front shell by injection molding. Multiple planetary gears 32 are arranged around the sun gear 31 and mesh with it. The planetary gears 32 are rotatably mounted on the planet carrier. The inner ring gear 33 meshes with the multiple planetary gears 32. The sun gear 31 has an input shaft 311, and the planet carrier has an output shaft 7. The input shaft can extend from the shaft hole of the rear shell, and the output shaft can extend from the shaft hole of the front shell.
[0020] The planetary frame includes a front frame 8 and a rear frame 9, the front frame and the rear frame are buckled to form a gear cavity, the planetary gear 32 is arranged in the gear cavity, and the gear cavity is provided with a shaft column for the planetary gear to be rotatably connected. When installing, the planetary gear is first assembled to the shaft column, and then the rear frame is buckled to the front frame.
[0021] The output shaft 7 and the input shaft 311 are both provided with a shaft connection hole 10, and the shape of the shaft connection hole is non-circular, so that the input shaft can be connected to the rotating shaft of the motor and the output shaft can be connected to the stirring mechanism for use.
Claims
1. A gearbox structure, characterized in that: The invention comprises a front shell (1), a rear shell (2) and a planetary gear set (3). The middle parts of the front shell (1) and the rear shell (2) are both provided with shaft holes (4). The front shell and the rear shell are buckled together to form a gear cavity for assembling the planetary gear set (3).
2. A gearbox structure according to claim 1, characterized in that: The outer edge of the front shell (1) is provided with a plurality of buckle positions (5) distributed in the circumferential direction, and the rear shell (2) is provided with buckle hooks (6) buckled with the buckle positions.
3. A gearbox structure according to claim 2, characterized in that: A guiding inclined surface (51) is provided at one end of the buckle position (5) opposite to the buckle hook (6).
4. A gearbox structure according to claim 2, characterized in that: The buckle hook (6) and the rear shell (2) are an integrally-molded structure.
5. A gearbox structure according to any one of claims 1 to 4, characterized in that: The planetary gear set (3) comprises a sun gear (31), a plurality of planetary gears (32), an inner ring gear (33) and a planet carrier. The plurality of planetary gears (32) are arranged around the sun gear (31) and mesh with the sun gear (31). The planetary gears (32) are rotatably mounted on the planet carrier. The inner ring gear (33) meshes with the plurality of planetary gears (32). The sun gear (31) has an input shaft (311), and the planet carrier has an output shaft (7).
6. A gearbox structure according to claim 5, characterized in that: The planetary frame comprises a front frame (8) and a rear frame (9), the front frame and the rear frame are buckled to form a gear cavity, the planetary gear (32) is arranged in the gear cavity, and the gear cavity is provided with a shaft column for rotationally connecting the planetary gear.
7. A gearbox structure according to claim 5, characterized in that: The output shaft (7) and the input shaft (311) are both provided with a shaft connection hole (10), and the shape of the shaft connection hole is non-circular.