A deceleration motor

Abstract

The utility model relates to motor technical field, concretely relates to a speed reducer motor, it includes first end cover and second end cover, both sides of first end cover are detachably connected with first casing and second casing respectively, first casing and first end cover enclose and constitute first chamber, be equipped with encoder in first chamber, second end cover is detachably connected with third casing, second casing and third casing are detachably connected in both ends of second end cover, be equipped with motor assembly in second casing, be equipped with speed reducer assembly in third casing, motor assembly and speed reducer assembly transmission connection, the scheme of the present application is convenient for maintenance personnel accurate positioning fault component in the casing, only needs to dismantle corresponding casing to carry out component replacement, guarantees compact structure under the premise, has greatly promoted the maintainability and maintenance efficiency of equipment, has reduced the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a geared motor. Background Technology

[0002] In existing technologies, integrated geared motors typically employ a highly integrated structural design, with the encoder, motor, and reducer—the three main functional units—compactly housed within an inseparable housing to reduce the overall size of the structure. While this structure offers advantages in space utilization, it also presents significant drawbacks: when internal components fail, maintenance becomes difficult. Due to the lack of independent modular interfaces between components, maintenance personnel are often unable to disassemble and replace faulty units specifically, instead being forced to scrap the entire motor and reducer assembly. This not only results in material waste and high spare parts costs but also extends equipment downtime. Utility Model Content

[0003] The purpose of this invention is to provide a geared motor to solve the problem that integrated geared motors are difficult to disassemble while ensuring a compact structure in the prior art.

[0004] The technical solution of this utility model is: a geared motor, including a first end cover and a second end cover, a first housing and a second housing respectively detachably connected to both sides of the first end cover, the first housing and the first end cover together forming a first chamber, an encoder is provided in the first chamber, a third housing is detachably connected to the second end cover, the second housing and the third housing are detachably connected to both ends of the second end cover, a motor assembly is provided in the second housing, a gear reduction assembly is provided in the third housing, and the motor assembly and the gear reduction assembly are connected in a transmission connection.

[0005] Preferably, the first end cap has a first mounting ring on one end face along the axial direction and a second mounting ring on the other end face. The outer wall of the first mounting ring is interference-fitted with the inner wall of the first housing, and the outer wall of the second mounting ring is interference-fitted with the inner wall of the second housing.

[0006] Preferably, one end of the second end cover has a mounting platform protruding along the axial direction, the outer wall of the mounting platform is interference-fitted with the inner wall of the second housing, and the other end of the second end cover is bolted to the third housing along the axial direction. Preferably, the second housing has a first limiting groove at one end along the axial direction and a second limiting groove at the other end. The second mounting ring is constrained by the first limiting groove in both the axial and radial directions, and the mounting platform is constrained by the second limiting groove in both the axial and radial directions.

[0007] Preferably, the motor assembly includes a stator, a rotor, and a shaft; the stator is fixed to the first end cover; the rotor is fixed to the shaft and is radially spaced relative to the stator; the shaft is rotatably connected to the first end cover and the second end cover respectively, and one end of the shaft extends from the second housing into the third housing to drive the reduction assembly.

[0008] Preferably, the reduction assembly includes a planet carrier, a sun gear, and several planet gears. The sun gear is coaxially and fixedly connected to the rotating shaft. The inner wall of the third housing is provided with an annular toothed portion. The planet gears mesh between the annular toothed portion and the sun gear. The planet gears are rotatably connected to the interior of the planet carrier. The bottom of the planet carrier serves as the output end.

[0009] Preferably, a first bearing and a second bearing are fixedly provided on the inner wall of the third housing. The first bearing and the second bearing are axially disposed on both sides of the planetary gear, and the planet carrier is rotatably supported in the third housing by the first bearing and the second bearing.

[0010] Preferably, the first housing and the first end cap are bolted together along the axis, and the second housing and the second end cap are bolted together along the axial direction.

[0011] Compared with the prior art, the advantages of this utility model are: Using the first and second end caps as the core connecting hubs, the various functional components are efficiently integrated within a limited space, ensuring a highly compact structure. At the same time, when any of the encoder, motor assembly, or reduction assembly fails, since each part exists independently through detachable connections, maintenance personnel can accurately locate the housing of the faulty component and replace the component simply by disassembling the corresponding housing, without the need for large-scale disassembly of the overall structure. While ensuring a compact structure, this greatly improves the maintainability and efficiency of the equipment and reduces maintenance costs. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of a geared motor according to the present invention; Figure 2 This is a cross-sectional view of a geared motor according to the present invention. Figure 3 This is a cross-sectional view of the external structure of a geared motor according to the present invention.

[0013] Explanation of reference numerals in the attached figures: 1. First end cap; 11. First mounting ring; 12. Second mounting ring; 13. Sleeve; 2. Second end cap; 21. Mounting platform; 3. First housing; 31. First chamber; 4. Second housing; 41. First limiting groove; 42. Second limiting groove; 5. Third housing; 6. Encoder; 7. Motor assembly; 71. Stator; 72. Rotor; 73. Shaft; 8. Reduction assembly; 81. Planetary carrier; 82. Sun gear; 83. Planetary gears; 84. First bearing; 85. Second bearing. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] like Figures 1 to 3As shown, a geared motor includes a first end cover 1 and a second end cover 2. A first housing 3 and a second housing 4 are detachably connected to both sides of the first end cover 1, respectively. The first housing 3 and the first end cover 1 together form a first chamber 31, in which an encoder 6 is installed. A third housing 5 is detachably connected to the second end cover 2. The second housing 4 and the third housing 5 are detachably connected to both ends of the second end cover 2. A motor assembly 7 is installed inside the second housing 4, and a gear reduction assembly 8 is installed inside the third housing 5. The motor assembly 7 and the gear reduction assembly 8 are connected in a driving connection. The encoder 6, motor, and gear reducer are physically integrated, maintaining a compact overall structure, while functionally independent, enabling targeted and rapid assembly and disassembly, greatly reducing maintenance time and economic costs.

[0018] The first end cap 1 has a first mounting ring 11 on one end face along its axis and a second mounting ring 12 on the other end face. Preferably, both the first mounting ring 11 and the second mounting ring 12 are hollow cylindrical rings. The first housing 3 is constructed as a housing structure with one open end. The first mounting ring 11 is interference-fitted to the inner wall of the first housing 3, so that the first mounting ring 11 is radially constrained by the inner wall of the first housing 3. The radial interference fit between the first mounting ring 11 and the first housing 3 eliminates radial clearance, ensures coaxiality, effectively resists vibration and load impact, and prevents loosening of the connection. Preferably, the first housing 3 and the first end cap 1 are bolted together along the axis.

[0019] The second housing 4 is constructed as a hollow cylindrical structure. One end of the second housing 4 is press-fitted with the first end cap 1, and the other end is press-fitted with the second end cap 2. The three together form a second chamber, in which the motor assembly 7 is housed. Specifically, the second housing 4 has a first limiting groove 41 at one end along the axial direction and a second limiting groove 42 at the other end. The second mounting ring 12 is constrained axially and radially by the first limiting groove 41, and the second end cap 2 is press-fitted with the second limiting groove 42. This provides a solid structural foundation for the stable operation of the internal motor assembly 7, effectively avoiding vibration, noise, and wear caused by misalignment. Secondly, while achieving mechanical fastening, it also forms an excellent sealing effect, effectively preventing external contaminants from entering the second chamber and reducing internal electromagnetic leakage. The overall structure is compact, and the assembly process is simple and efficient. Positioning, fixing, and initial sealing can be completed in one step through press fitting. Both the first end cap 1 and the second end cap 2 can be quickly disassembled from the second housing 4 to facilitate the inspection and maintenance of the motor assembly 7 inside the second chamber. Preferably, the first housing 3 and the first end cover 1 are bolted together along the axis, and the second housing 4 and the second end cover 2 are bolted together along the axis, which further ensures the connection reliability of the motor under dynamic load.

[0020] A sleeve 13 extends from the first end cover 1 toward the second chamber, and the sleeve 13 is a hollow cylindrical structure. The motor assembly 7 includes a stator 71, a rotor 72, and a shaft 73; the inner wall of the stator 71 is fixed to the outer periphery of the sleeve 13, and the stator 71 is fixedly connected to the first end cover 1 through the sleeve 13. The rotor 72 is fixedly connected to the shaft 73 and is radially spaced relative to the stator 71. The shaft 73 is movably inserted through the sleeve 13 and rotatably connected to the first end cover 1. The shaft 73 is rotatably connected to the second end cover 2, and one end of the shaft 73 extends from the second housing 4 into the third housing 5 to drive the reduction gear assembly 8.

[0021] The second end cap 2 has a mounting platform 21 at one end along the axial direction. The outer contour of the mounting platform 21 is configured as a circle to match the second limiting groove 42. The outer side wall of the mounting platform 21 is interference-fitted with the inner side wall of the second limiting groove 42. The top of the mounting platform 21 abuts against the second limiting groove 42. The mounting platform 21 is constrained by the second limiting groove 42 in both the axial and radial directions. While ensuring connection strength and positioning accuracy, the size and space occupied by each component are reduced, making the overall structure more compact. This helps to reduce the size and weight of the equipment and improve the space utilization rate of the equipment.

[0022] The end of the second end cap 2 away from the mounting platform 21 is detachably bolted to the third housing 5. The third housing 5 is constructed as a hollow cylindrical structure, and the reduction assembly 8 is connected to the motor assembly 7 inside the third housing 5.

[0023] The reduction gear assembly 8 includes a planetary carrier 81, a sun gear 82, and several planetary gears 83. The sun gear 82 is coaxially fixedly connected to the rotating shaft 73. The inner wall of the third housing 5 is provided with an annular toothed section. The planetary gears 83 mesh between the annular toothed section and the sun gear 82. The planetary gears 83 are rotatably connected to the inside of the planetary carrier 81, and the bottom of the planetary carrier 81 serves as the output end. When the reduction gear assembly 8 is assembled as an independent module into the third housing 5, its key parameters such as meshing clearance and gear alignment accuracy can be finely adjusted and tested at the sub-module level to ensure optimal transmission accuracy and noise level. Once put into use, if maintenance or replacement of the reducer is required, only the third housing 5 needs to be removed from the whole machine. Maintenance operations are strictly limited to a local area and will not disturb the precise positioning of the motor assembly 7 or encoder 6 module, greatly protecting the integrity of other components and simplifying the maintenance process. Since all components of the reduction assembly 8 are located inside the third housing 5, there is no need to change the motor or encoder 6 module. By simply replacing the third housing 5 module containing planetary gears 83 with different reduction ratios, the overall reduction ratio and output torque of the entire device can be flexibly changed, greatly improving the product development efficiency and flexibility.

[0024] The third housing 5 is internally fitted with a first bearing 84 and a second bearing 85, which are axially positioned on either side of the planetary gear 83. The planetary carrier 81 is rotatably supported within the third housing 5 via the first bearing 84 and the second bearing 85. Specifically, a first groove is formed between the second end cap 2 and the second housing 4, and the first bearing 84 is confined within this groove. The third housing 5 is also fitted with a limiting ring, and its inner wall has a stepped structure. The limiting ring engages with the inner wall of the third housing 5 to limit the movement of the second bearing 85.

[0025] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A geared motor, characterized in that, Includes a first end cap (1) and a second end cap (2). The first end cap (1) is detachably connected to a first housing (3) and a second housing (4) on both sides. The first housing (3) and the first end cap (1) together form a first chamber (31). An encoder (6) is provided in the first chamber (31). The second end cap (2) is detachably connected to a third housing (5). The second housing (4) and the third housing (5) are detachably connected to both ends of the second end cap (2). The second housing (4) is provided with a motor assembly (7). The third housing (5) is provided with a speed reduction assembly (8). The motor assembly (7) and the speed reduction assembly (8) are connected in a transmission.

2. The geared motor according to claim 1, characterized in that: The first end cap (1) has a first mounting ring (11) on one end face along the axial direction and a second mounting ring (12) on the other end face. The outer wall of the first mounting ring (11) is press-fitted with the inner wall of the first housing (3), and the outer wall of the second mounting ring (12) is press-fitted with the inner wall of the second housing (4).

3. A geared motor according to claim 2, characterized in that: The second end cap (2) has a mounting platform (21) protruding from one end along the axial direction. The outer wall of the mounting platform (21) is interference-fitted with the inner wall of the second housing (4). The other end of the second end cap (2) is bolted to the third housing (5) along the axial direction.

4. A geared motor according to claim 3, characterized in that: The second housing (4) has a first limiting groove (41) at one end along the axial direction and a second limiting groove (42) at the other end. The second mounting ring (12) is restricted in the axial and radial directions by the first limiting groove (41), and the mounting platform (21) is restricted in the axial and radial directions by the second limiting groove (42).

5. A geared motor according to claim 1, characterized in that: The motor assembly (7) includes a stator (71), a rotor (72), and a shaft (73); the stator (71) is fixed to the first end cover (1); the rotor (72) is fixed to the shaft (73) and is radially spaced relative to the stator (71); the shaft (73) is rotatably connected to the first end cover (1) and the second end cover (2), and one end of the shaft (73) extends from the second housing (4) into the third housing (5) to drive the reduction assembly (8).

6. A geared motor according to claim 5, characterized in that: The deceleration assembly (8) includes a planet carrier (81), a sun gear (82), and several planet gears (83). The sun gear (82) is coaxially fixedly connected to the rotating shaft (73). The inner wall of the third housing (5) is provided with an annular toothed portion. The planet gears (83) mesh between the annular toothed portion and the sun gear (82). The planet gears (83) are rotatably connected to the interior of the planet carrier (81). The bottom of the planet carrier (81) serves as the output end.

7. A geared motor according to claim 6, characterized in that: The inner wall of the third housing (5) is fixed with a first bearing (84) and a second bearing (85). The first bearing (84) and the second bearing (85) are axially disposed on both sides of the planetary gear (83). The planetary carrier (81) is rotatably supported in the third housing (5) by the first bearing (84) and the second bearing (85).

8. A geared motor according to claim 1, characterized in that: The first housing (3) and the first end cap (1) are bolted together along the axis, and the second housing (4) and the second end cap (2) are bolted together along the axis.

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