Planetary speed reducing mechanism

Abstract

The utility model relates to a planetary reducing mechanism in the technical field of planetary transmission mechanisms, which comprises a shell and an internal transmission component, the transmission component comprises a sun gear, a plurality of planet gears and a planet carrier, the planet carrier is rotatably arranged in the center of an inner cavity, the sun gear is rotatably arranged in the center of the planet carrier, and the sun gear is rotatably arranged in the center of the planet carrier. The planet gears are rotatably arranged on the periphery of the planet carrier, the inner sides of the planet gears are in meshing transmission with the side wall of the sun gear, gear ring grooves are formed in the side wall of the inner cavity and distributed in an annular structure with the planet carrier as the center, and the outer sides of the planet gears are in meshing transmission with the gear ring grooves. According to the planetary speed reducer, the gear ring input in a traditional planetary speed reducing mechanism is reduced, meanwhile, the gear ring groove can achieve the function and effect of the gear ring, the internal structure of the planetary speed reducing mechanism is optimized, and the overall structure of the planetary speed reducer is more compact and smaller under the condition that the functionality is not changed.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary transmission mechanisms, in particular to a planetary reduction mechanism. Background Art

[0002] A planetary gear transmission mechanism refers to a gear transmission mechanism composed of a planetary gear system. Planetary gear transmission mechanisms are widely used in industry. In order to achieve a larger transmission ratio, a multi-stage transmission method is generally adopted, generally including a sun gear, planetary gears, a ring gear and a planet carrier. The planetary gears are driven by the first-stage sun gear to rotate and revolve along the first inner ring gear, thereby driving the first-stage planet carrier to rotate, reducing the speed and increasing the torque for output. It is generally used in mixing equipment such as mixers.

[0003] The existing food mixers require reasonable design, neat appearance, and overall development in the direction of small size and light weight. Therefore, in view of these current situations, it is necessary to develop a planetary reduction mechanism to meet the needs of practical use. Utility Model Content

[0004] The utility model aims to provide a planetary reduction mechanism, which is used to reduce the input of the gear ring in the planetary reduction mechanism and optimize the assembly structure of the planetary reduction mechanism.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A planetary reduction mechanism comprises an outer shell and an internal transmission component, the interior of the outer shell is an inner cavity, the transmission component is arranged in the inner cavity, the transmission component comprises a sun gear, a plurality of planetary gears and a planetary carrier, the planetary carrier is rotatably arranged at the center of the inner cavity, the sun gear is rotatably arranged at the center of the planetary carrier, the plurality of planetary gears are rotatably arranged at the periphery of the planetary carrier, and the inner sides of the plurality of planetary gears are meshed with the side walls of the sun gear for transmission, the side walls of the inner cavity are provided with gear ring grooves, the gear ring grooves are distributed in an annular structure with the planetary carrier as the center, and the outer sides of the plurality of planetary gears are meshed with the gear ring grooves for transmission.

[0007] In the above description, as a further solution, the outer shell is composed of a bottom shell and a top cover, the gear ring groove is opened on the inner wall of the bottom shell, the transmission assembly is rotatably arranged inside the bottom shell, and when the top cover is fixedly connected, the top cover can cover the top of the transmission assembly.

[0008] In the above description, as a further solution, a plurality of planetary mounting shafts are provided on the periphery of the planetary carrier, and the centers of the planetary wheels are rotatably sleeved inside the planetary mounting shafts.

[0009] In the above description, as a further solution, the top of the sun gear is the first gear part, the bottom of the sun gear is the second gear part, the inner sides of several planetary gears are meshed with the second gear part for transmission, and a connecting through hole is opened on one side of the bottom shell, and the connecting through hole is opened at the same horizontal height as the first gear part.

[0010] In the above description, as a further solution, a vertically upward central mounting shaft is provided in the center of the planetary carrier, a plug-in through hole is opened in the middle of the sun gear, the plug-in through hole passes through the first gear part and the second gear part, and the sun gear is rotatably plugged into the central mounting shaft through the plug-in through hole.

[0011] In the above description, as a further solution, the second gear portion is a bevel gear structure, the top ends of the planetary mounting shafts are tilted outward, and the cross-sectional structure of the gear ring groove is an inverted frustum-shaped structure.

[0012] In the above description, as a further solution, the first gear portion is a helical gear.

[0013] The beneficial effects produced by the utility model are as follows:

[0014] A planetary reduction mechanism of the present application has a ring gear groove matching the planetary wheel inside the outer shell, and the ring gear groove is opened in an annular structure with the planetary carrier as the center, so that the outer side of the planetary wheel is meshed with the ring gear groove for transmission, reducing the investment in the ring gear in the traditional planetary reduction mechanism. At the same time, the ring gear groove can play the function and effect of the ring gear, optimizes the internal structure of the planetary reduction mechanism, and makes the overall structure of the planetary reducer more compact and small while ensuring the functionality remains unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a planetary reduction mechanism described in the utility model;

[0016] Figure 2 This is a schematic diagram of the structure decomposition of a planetary reduction mechanism described in the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of a planetary reduction mechanism described in the utility model;

[0018] In the figure: 1-housing, 11-bottom housing, 12-top cover, 111-inner cavity, 112-gear ring groove, 113-connecting through hole, 3-sun gear, 31-first gear part, 32-second gear part, 33-plug-in through hole, 4-planetary gear, 5-planet carrier, 51-planetary mounting shaft, 52-center mounting shaft. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0020] See also Figure 1-3 A planetary reduction mechanism specifically implemented therein includes a housing 1 and an internal transmission component, the interior of the housing 1 is an inner cavity 111, the transmission component is arranged in the inner cavity 111, the transmission component includes a sun gear 3, a plurality of planetary gears 4 and a planet carrier 5, the planet carrier 5 is rotatably arranged at the center of the inner cavity 111, the sun gear 3 is rotatably arranged at the center of the planet carrier 5, the plurality of planetary gears 4 are rotatably arranged at the periphery of the planet carrier 5, and the inner sides of the plurality of planetary gears 4 are all meshed with the side wall of the sun gear 3 for transmission, the side wall of the inner cavity 111 is provided with a gear ring groove 112, the gear ring groove 112 is distributed in an annular structure along the planet carrier 5 as the center, and the outer sides of the plurality of planetary gears 4 are all meshed with the gear ring groove 112 for transmission.

[0021] A gear ring groove 112 matching the planetary gear 4 is provided inside the housing 1. The gear ring groove 112 is provided in an annular structure with the planetary carrier 5 as the center, so that the outer side of the planetary gear 4 is meshed with the gear ring groove 112 for transmission, reducing the investment in the gear ring in the traditional planetary reduction mechanism. At the same time, the gear ring groove 112 can play the function and effect of the gear ring, optimize the internal structure of the planetary reduction mechanism, and make the overall structure of the planetary reducer more compact and small while ensuring the functionality remains unchanged.

[0022] Specific as Figure 1 and Figure 2 As shown, the housing 1 is composed of a bottom shell 11 and a top cover 12, a gear ring groove 112 is opened on the inner wall of the bottom shell 11, the transmission assembly is rotatably arranged inside the bottom shell 11, and when the top cover 12 is fixedly connected with the top cover 12, the top cover 12 can cover the top of the transmission assembly.

[0023] Specific as Figure 2 and Figure 3 As shown, a plurality of planetary mounting shafts 51 are provided on the periphery of the planetary carrier 5, and the center of the planetary gear 4 is rotatably sleeved inside the planetary mounting shaft 51. The top of the sun gear 3 is the first gear portion 31, and the bottom of the sun gear 3 is the second gear portion 32. The inner sides of the plurality of planetary gears 4 are all meshed with the second gear portion 32 for transmission. A connecting through hole 113 is provided on one side of the bottom shell 11, and the connecting through hole 113 is provided at the same horizontal height as the first gear portion 31. A vertically upward central mounting shaft 52 is provided at the center of the planetary carrier 5, and a plug-in through hole 33 is provided in the middle of the sun gear 3. The plug-in through hole 33 passes through the first gear portion 31 and the second gear portion 32, and the sun gear 3 is rotatably plugged into the central mounting shaft 52 through the plug-in through hole 33.

[0024] In a further solution, as shown in FIG3, the second gear part 32 is a bevel gear structure, the top of the planetary mounting shaft 51 is tilted outward, the cross-sectional structure of the gear ring groove 112 is an inverted cone structure, and the first gear part 31 is a helical gear. The planetary gear 4 is tilted due to the axial direction of the planetary mounting shaft 51 being close to the side of the gear ring groove 112, and the cross-sectional tilt angle of the gear ring groove 112 is matched with the axial direction of the planetary mounting shaft 51; after the planetary reduction mechanism is assembled as a whole, the transmission component is subjected to the action of the body gravity, and the side wall of the planetary gear 4 is in a structural state of tilted contact with the gear ring groove 112, which increases the contact area between the planetary gear 4 and the gear ring groove 112, and improves the operation stability of the transmission component during the movement of the transmission component.

[0025] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A planetary reduction mechanism, comprising a housing and an internal transmission assembly, wherein the interior of the housing is an inner cavity, and the transmission assembly is arranged in the inner cavity, and is characterized in that: The transmission assembly includes a sun gear, a plurality of planetary gears and a planetary carrier. The planetary carrier is rotatably arranged at the center of the inner cavity, the sun gear is rotatably arranged at the center of the planetary carrier, the plurality of planetary gears are rotatably arranged at the periphery of the planetary carrier, and the inner sides of the plurality of planetary gears are meshed with the side walls of the sun gear for transmission. The side walls of the inner cavity are provided with gear ring grooves, and the gear ring grooves are distributed in an annular structure with the planetary carrier as the center, and the outer sides of the plurality of planetary gears are meshed with the gear ring grooves for transmission.

2. A planetary reduction mechanism according to claim 1, characterized in that: The shell is composed of a bottom shell and a top cover, the gear ring groove is opened on the inner wall of the bottom shell, the transmission assembly is rotatably arranged inside the bottom shell, and when the top cover is fixedly connected, the top cover can cover the top of the transmission assembly.

3. A planetary reduction mechanism according to claim 1, characterized in that: The periphery of the planet carrier is provided with a plurality of planetary mounting shafts, and the centers of the planetary wheels are rotatably sleeved inside the planetary mounting shafts.

4. A planetary reduction mechanism according to claim 3, characterized in that: The top of the sun gear is the first gear part, the bottom of the sun gear is the second gear part, the inner sides of several planetary gears are meshed with the second gear part for transmission, and a connecting through hole is opened on one side of the bottom shell, and the connecting through hole is opened at the same horizontal height as the first gear part.

5. A planetary reduction mechanism according to claim 4, characterized in that: A vertically upward central mounting shaft is provided at the center of the planet carrier, a plug-in through hole is provided in the middle of the sun gear, the plug-in through hole runs through the first gear part and the second gear part, and the sun gear is rotatably plugged with the central mounting shaft through the plug-in through hole.

6. A planetary reduction mechanism according to claim 4, characterized in that: The second gear portion is a bevel gear structure, the top ends of the planetary mounting shafts are tilted outward, and the cross-sectional structure of the gear ring groove is an inverted frustum-shaped structure.

7. A planetary reduction mechanism according to claim 4, characterized in that: The first gear portion is a helical gear.

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