Motor speed reducing device

Abstract

The utility model belongs to the technical field of speed reduction devices, and particularly relates to a motor speed reduction device which comprises a transmission box body. An accommodating cavity is formed between the transmission box body and the cover plate; the motor shell is fixedly installed on the other side face, opposite to the transmission box body, of the cover plate. A motor input shaft; a driving gear; the driven shaft is rotationally connected into the containing cavity, and a first driven gear and a second driven gear are arranged on the driven shaft; the front end of the transmission box body is rotationally connected with a reduction gear output shaft, and one end of the reduction gear output shaft extends into the containing cavity and is connected with a gear part which is in meshing transmission with the second transmission gear. The motor speed reducing device has the advantages that the overall size of the motor speed reducing device is reduced, meanwhile, the driving gear, the driven shafts and the bearing chambers are easy to arrange, meanwhile, it is guaranteed that power transmission is stable and reliable, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a motor speed reducer. Background Art

[0002] The reduction gears used in existing motors inside automobiles are bulky, which leads to major challenges in their installation and maintenance within the relatively small installation space of the automobile. This not only increases the complexity and labor intensity of the operation, but also increases the maintenance cost. In addition, due to its complex structure, the disassembly and assembly process often involves multiple steps, such as removing screws, bearings, gears and other components, which require professional tools and skilled operating skills. If the design does not take maintenance convenience into consideration, such as inaccessible internal components or overly compact connection points, even experienced technicians may spend a lot of time during the disassembly and assembly process, further affecting production efficiency and maintenance efficiency. Therefore, in response to this problem, it is necessary to re-examine and optimize the design of automotive motor reduction gears to make them more compact and easy to disassemble and assemble, so as to improve the overall use and maintenance efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a motor reduction device to solve the above problems.

[0004] The technical solution of the utility model is implemented as follows: a motor deceleration device, comprising:

[0005] A transmission box body; a cover plate, wherein a receiving chamber is formed between the transmission box body and the cover plate;

[0006] The motor housing is fixedly mounted on the other side of the cover plate relative to the transmission housing;

[0007] The motor input shaft is located in the motor housing, and the front end of the motor input shaft passes through the cover plate and extends into the accommodating chamber;

[0008] A driving gear is located in the accommodating chamber, and the driving gear is arranged on the front end of the motor input shaft;

[0009] A driven shaft is rotatably connected to the accommodating chamber, and a first driven gear and a second driven gear are provided on the driven shaft;

[0010] Wherein, the first driven gear is meshed with the driving gear;

[0011] The front end of the transmission box is rotatably connected to a reduction gear output shaft, one end of which extends into the accommodating chamber and is connected to a gear portion meshing with the second driven gear for transmission;

[0012] A housing mating surface is provided on one side of the cover plate facing the transmission housing, a first bearing chamber located on the inner wall of the transmission housing and a second bearing chamber located on the housing mating surface of the cover plate are provided in the accommodating chamber, and first hub bearings adapted to the end of the driven shaft are provided in the first bearing chamber and the second bearing chamber respectively;

[0013] There are two driven shafts, which are distributed on both sides of the driving gear in a mirror-image manner.

[0014] Furthermore, a motor matching surface is provided on the other side of the cover plate relative to the transmission housing.

[0015] Furthermore, the gear portion and the reduction gear output shaft are integrally formed.

[0016] Furthermore, an end cover is provided on one side of the motor housing away from the cover plate, and a third bearing chamber is respectively provided on the motor matching surface of the cover plate and the inner side of the end cover, and a second hub bearing matched with the motor input shaft is fixedly installed in the third bearing chamber.

[0017] Furthermore, the end cover is fixed to the motor housing by bolts, the housing mating surface of the cover plate is fixed to the transmission housing by bolts, and the motor mating surface of the cover plate is fixed to the motor housing by bolts. The beneficial effects of the utility model are as follows: the motor housing can be directly loaded on the transmission housing through the cover plate, so that the overall volume of the motor reduction device is reduced, and the layout of the driving gear, the driven shaft and each bearing chamber is simple, while ensuring that its power transmission is stable and reliable, and easy to disassemble and assemble. After the accessories are installed on the cover plate and the transmission housing, the cover plate is fastened on the transmission housing to make the transmission components fit together. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Figure 1 is a cross-sectional view of a motor reduction device in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] As shown in FIG1 , the utility model discloses a motor deceleration device, comprising:

[0022] Transmission box 1;

[0023] A cover plate 2 is formed between the transmission housing 1 and the cover plate 2 to form a receiving chamber;

[0024] The motor housing 3 is fixedly mounted on the other side of the cover plate 2 relative to the transmission housing 1;

[0025] The motor input shaft 4 is located in the motor housing 3, and the front end of the motor input shaft 4 passes through the cover plate 2 and extends into the accommodating chamber;

[0026] The driving gear 5 is located in the accommodating chamber, and the driving gear 5 is arranged on the front end of the motor input shaft 4;

[0027] A driven shaft 6 is rotatably connected to the accommodating chamber, and a first driven gear 7 and a second driven gear 8 are provided on the driven shaft 6;

[0028] Wherein, the first driven gear 7 is meshed with the driving gear 5;

[0029] The front end of the transmission housing 1 is rotatably connected to a reduction gear output shaft 61, one end of which extends into the accommodating chamber and is connected to a gear portion that meshes with the second driven gear 8 for transmission;

[0030] A housing mating surface is provided on the side of the cover plate 2 facing the transmission housing 1, and a first bearing chamber located on the inner wall of the transmission housing 1 and a second bearing chamber located on the housing mating surface of the cover plate 2 are provided in the accommodating chamber, and first hub bearings adapted to the end of the driven shaft 6 are respectively provided in the first bearing chamber and the second bearing chamber;

[0031] There are two driven shafts 6 , and the two driven shafts 6 are distributed on both sides of the driving gear 5 in a mirror-image manner.

[0032] By adopting the above technical solution, the motor housing can be directly loaded on the transmission case through the cover plate, so that the overall volume of the motor reduction device is reduced, and the layout of the driving gear, the driven shaft and the bearing chambers is simple, while ensuring that the power transmission is stable and reliable, and easy to disassemble and assemble. After the accessories are installed on the cover plate and the transmission case respectively, the cover plate is fastened on the transmission case body to fix it, so that the transmission components can be matched.

[0033] Embodiment 2:

[0034] This embodiment provides a motor reduction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] Furthermore, a motor mating surface is provided on the other side of the cover plate 2 relative to the transmission housing 1 .

[0036] By adopting the above technical solution, the cover plate can be used as the sealing surface of the transmission case and also as the sealing surface of the motor housing, thereby effectively reducing the overall volume of the motor reduction device.

[0037] Embodiment 3:

[0038] This embodiment provides a motor reduction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0039] Furthermore, the gear portion and the reduction gear output shaft 61 are integrally formed.

[0040] By adopting the above technical solution, the connection is firm, the power transmission is stable and the service life is long.

[0041] Embodiment 4:

[0042] This embodiment provides a motor reduction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] Furthermore, an end cover 9 is provided on one side of the motor housing 3 away from the cover plate 2, and a third bearing chamber is respectively provided on the motor matching surface of the cover plate 2 and the inner side of the end cover 9, in which a second hub bearing matched with the motor input shaft 4 is fixedly installed.

[0044] By adopting the above technical solution, the setting of the end cover facilitates the disassembly and maintenance of the motor housing, and the second hub bearing adapts to the motor input shaft to ensure stable and smooth power transmission.

[0045] Embodiment 5: This embodiment provides a motor reduction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features. Further, the end cover 9 is fixed to the motor housing 3 by bolts, the housing mating surface of the cover plate 2 is fixed to the transmission housing by bolts, and the motor mating surface of the cover plate 2 is fixed to the motor housing 3 by bolts. By adopting the above technical solutions, the connection is firm and the disassembly and assembly are convenient.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor reduction device, characterized in that: include: Transmission housing (1); A cover plate (2), wherein a receiving chamber is formed between the transmission housing (1) and the cover plate (2); The motor housing (3) is fixedly mounted on the other side of the cover plate (2) opposite to the transmission housing (1); The motor input shaft (4) is located in the motor housing (3), and the front end of the motor input shaft (4) passes through the cover plate (2) and extends into the accommodating chamber; A driving gear (5) is located in the accommodating chamber, and the driving gear (5) is arranged on the front end of the motor input shaft (4); A driven shaft (6) is rotatably connected to the accommodating chamber, and a first driven gear (7) and a second driven gear (8) are provided on the driven shaft (6); The first driven gear (7) is meshed with the driving gear (5); the front end of the transmission housing (1) is rotatably connected to a reduction gear output shaft (61); one end of the reduction gear output shaft (61) extends into the accommodating chamber and is connected to a gear portion meshed with the second driven gear (8) for transmission; A housing mating surface is provided on one side of the cover plate (2) facing the transmission housing (1); a first bearing chamber located on the inner wall of the transmission housing (1) and a second bearing chamber located on the housing mating surface of the cover plate (2) are provided in the accommodating chamber; first hub bearings adapted to the end of the driven shaft (6) are provided in the first bearing chamber and the second bearing chamber respectively; Two driven shafts (6) are provided, and the two driven shafts (6) are distributed on both sides of the driving gear (5) in a mirror-image manner.

2. A motor reduction device according to claim 1, characterized in that: A motor matching surface is provided on the other side of the cover plate (2) relative to the transmission housing (1).

3. A motor reduction device according to claim 1, characterized in that: The gear portion and the reduction gear output shaft (61) are integrally formed.

4. A motor reduction device according to claim 2, characterized in that: An end cover (9) is provided on the side of the motor housing (3) facing away from the cover plate (2), and a third bearing chamber is respectively provided on the motor matching surface of the cover plate (2) and the inner side of the end cover (9), wherein a second hub bearing matched with the motor input shaft (4) is fixedly installed in the third bearing chamber.

5. A motor reduction device according to claim 4, characterized in that: The end cover (9) is fixed to the motor housing (3) by bolt connection, the housing mating surface of the cover plate (2) is fixed to the transmission housing by bolt connection, and the motor mating surface of the cover plate (2) is fixed to the motor housing (3) by bolt connection.

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