Simplified-installation speed reduction motor

Abstract

The utility model discloses a speed reduction motor with simplified installation, which comprises a motor body, a multi-stage planetary speed reduction assembly and an output shaft, the multi-stage planetary speed reduction assembly comprises an inner gear ring, multi-stage planetary gears meshed with the inner gear ring, a first-stage sun gear meshed with the first-stage planetary gear and a final-stage planetary carrier used for installing a final-stage planetary gear, the first-stage sun gear is connected with the motor shaft, and the output shaft is connected with the final-stage planetary carrier; the speed reduction motor further comprises an integrally-injection-molded end cover and a connecting plate, the connecting plate is connected with the front end of the motor body and the rear end of the integrally-injection-molded end cover, and the multi-stage planetary speed reduction assembly is arranged on the inner side of the integrally-injection-molded end cover. The output shaft penetrates through the front portion of the integrated injection molding end cover, and a bearing assembly and an oil seal assembly are arranged between the output shaft and the front portion of the integrated injection molding end cover. Compared with the prior art, spare and accessory parts can be reduced, and assembling is convenient.

Description

[Technical field]

[0001] The utility model belongs to the technical field of motors, and in particular relates to a reduction motor. [Background technology]

[0002] The reduction motor in the prior art includes a motor body, a multi-stage planetary reduction assembly and an output shaft. The motor body is provided with a motor shaft. The multi-stage planetary reduction assembly includes an inner gear ring and a multi-stage planetary gear meshing with the inner gear ring. The first-stage input end of the multi-stage planetary reduction assembly is connected to the motor shaft, and the output shaft is connected to the final-stage output end of the multi-stage planetary reduction assembly. The connecting plate, the inner gear ring, the end cover of the reduction assembly and the front cover are fixed together by screws. Therefore, the multi-stage planetary reduction assembly has many parts and components, which makes the motor assembly complicated, the accuracy cannot be guaranteed, and the cost is high. [Contents of the utility model]

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a reduction motor with simplified installation, so as to solve the problem of complex motor assembly caused by a large number of spare parts.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A reduction motor with simplified installation includes a motor body, a multi-stage planetary reduction assembly and an output shaft, wherein the motor body is provided with a motor shaft, the multi-stage planetary reduction assembly includes an inner ring gear, multi-stage planetary gears meshing with the inner ring gear, a first-stage sun gear meshing with the first-stage planetary gears, and a last-stage planetary carrier for mounting a last-stage planetary gear, the first-stage sun gear is connected to the motor shaft, and the output shaft is connected to the last-stage planetary carrier, the reduction motor also includes an integral injection molded end cover and a connecting plate, the connecting plate connects the front end of the motor body and the rear end of the integral injection molded end cover, the multi-stage planetary reduction assembly is arranged on the inner side of the integral injection molded end cover, the output shaft passes through the front part of the integral injection molded end cover, and a bearing assembly and an oil seal assembly are arranged between the output shaft and the front part of the integral injection molded end cover.

[0006] Preferably, the one-piece injection-molded end cover is provided with a hollow structure for reducing weight and facilitating injection molding.

[0007] Preferably, the one-piece injection-molded end cover is provided with a cylinder body and an inner ring and an outer ring arranged inside and outside the cylinder body, and a hollow structure is provided between the inner ring and the outer ring and the cylinder body.

[0008] Preferably, the inner gear ring is embedded and installed on the inner side of the integral injection-molded end cover, and an inner gear ring front end positioning portion for positioning the front end of the inner gear ring is provided at the position where the rear end of the inner gear ring connects with the cylinder body, and the rear end of the inner gear ring is positioned by a connecting plate.

[0009] Preferably, a concave ring is provided on the radial outer side of the outer ring.

[0010] Preferably, the connecting plate is made of POM material, and the planetary gear is made of powder metallurgy structure.

[0011] Preferably, the rear end of the integral injection-molded end cover is provided with an outer radial positioning step, the connecting plate is positioned on the outer radial positioning step, the outer radial positioning step is radially connected with a radial locking screw, and an axial locking screw is provided between the connecting plate and the front end of the motor body.

[0012] Preferably, a center positioning boss is provided at the front center of the motor body around the motor shaft, and a center positioning hole is provided at the center of the connecting plate, and the center positioning hole cooperates with the center positioning boss.

[0013] Preferably, the bearing assembly includes a double-row ball bearing and an oil-containing bearing, the rear end of the inner ring is provided with a first positioning step for positioning the front end of the double-row ball bearing, and the front end of the inner ring is provided with a second positioning step for positioning the front end of the oil-containing bearing.

[0014] Preferably, the oil seal assembly comprises a double-row oil seal, and the double-row oil seal is arranged between the double-row ball bearing and the oil-containing bearing.

[0015] The utility model adopts the above technical solution and has the following beneficial effects: an integral injection molded end cover is adopted, and the multi-stage planetary reduction assembly is arranged on the inner side of the integral injection molded end cover, so it is convenient to install the components of the multi-stage planetary reduction assembly one by one on the inner side of the integral injection molded end cover, and finally the integral injection molded end cover is directly fixed to the connecting plate. Compared with the prior art, it can reduce the number of components and solve the problem that the prior art has a large number of components, resulting in complex motor assembly, inability to ensure accuracy, and high cost.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings.

Brief Description of the Drawings

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a simplified installation reduction motor of the utility model;

[0019] Figure markings: motor body 100, motor shaft 11, center positioning boss 12, connecting plate 200, radial locking screw 21, axial locking screw 22, center positioning hole 23, multi-stage planetary reduction assembly 300, inner ring 31, first-stage sun gear 32, final-stage planetary carrier 33, one-piece injection molded end cover 400, inner ring 41, first positioning step 411, second positioning step 412, cylinder 42, outer radial positioning step 421, outer ring 43, concave ring 431, hollow structure 44, output shaft 500, double-row ball bearing 51, double-row oil seal 52, oil-containing bearing 53, positioning retaining ring 54. [Specific implementation method]

[0020] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0021] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0022] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the following words indicating orientation or positional relationship, such as "inside", "outside", "front", "back", etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Reference Figure 1 As shown, this embodiment provides a reduction motor with simplified installation, including a motor body 100, a multi-stage planetary reduction assembly 300 and an output shaft 500. The motor body 100 is provided with a motor shaft 11. The multi-stage planetary reduction assembly includes an inner ring gear 31, multi-stage planetary gears meshing with the inner ring gear, a first-stage sun gear 32 meshing with the first-stage planetary gears, and a last-stage planetary carrier 33 for installing a last-stage planetary gear. The first-stage sun gear 32 is connected to the motor shaft 11, and the output shaft 500 is connected to the last-stage planetary carrier 33.

[0026] The output shaft 500 and the center of the final planet carrier 33 may be connected by a key connection or a tooth connection, an inner tooth is provided at the center of the final planet carrier 33, and an outer tooth is provided on the output shaft 500, and the outer tooth meshes with the inner tooth. It can be understood that the multi-stage planetary reduction assembly has at least two-stage structures, for example, two stages, and of course, it can also be three stages or more stages.

[0027] In order to solve the problem of complex motor assembly caused by a large number of spare parts, the reduction motor also includes an integral injection molded end cover 400 and a connecting plate 200, the connecting plate 200 connecting the front end of the motor body and the rear end of the integral injection molded end cover, the multi-stage planetary reduction assembly 300 is arranged on the inner side of the integral injection molded end cover, the output shaft 500 passes through the front part of the integral injection molded end cover 400 and a bearing assembly and an oil seal assembly are provided between the output shaft 500 and the front part of the integral injection molded end cover.

[0028] The technical solution of this embodiment facilitates the installation of the components of the multi-stage planetary reduction assembly one by one on the inner side of the integral injection molded end cover, and finally the integral injection molded end cover is directly fixed to the connecting plate. Compared with the prior art, it can reduce the number of components, solve the problem that the prior art has too many components, resulting in complex motor assembly, unguaranteed accuracy, and high cost.

[0029] Furthermore, the integral injection molded end cap 400 is provided with a hollow structure 44 for reducing weight and facilitating injection molding. Specifically, the integral injection molded end cap is provided with a cylinder 42 and an inner ring 41 and an outer ring 43 provided inside and outside the cylinder, and a hollow structure is provided between the inner ring and the outer ring and the cylinder.

[0030] The inner gear ring 31 is embedded and installed on the inner side of the integral injection molded end cover, and the inner gear ring front end positioning part for positioning the inner gear ring front end is provided at the position where the inner ring rear end is connected to the cylinder, and the inner gear ring rear end is positioned by the connecting plate 200. In this way, the inner gear ring 31 is installed first, and then the other components of the multi-stage planetary reduction assembly 300 are installed. After the parts of the multi-stage planetary reduction assembly are completely placed on the inner side of the integral injection molded end cover, the connecting plate is installed, which facilitates installation. In addition, a convex portion is provided on the radial outer side of the outer ring, and a concave ring 431 is provided on the convex portion to facilitate fixing the reduction motor.

[0031] As an implementation manner, the connecting plate 200 is a POM material structure, and the planetary gear is a powder metallurgy structure.

[0032] In order to fix the connection plate to the motor body, the one-piece injection-molded end cover is provided with an outer radial positioning step 421 at the rear end of the cylinder, and the connection plate 200 is positioned on the outer radial positioning step. The outer radial positioning step is radially connected with a radial locking screw 21, and an axial locking screw 22 is provided between the connection plate 200 and the front end of the motor body. In addition, both the radial locking screw 21 and the axial locking screw 22 are countersunk screws, and the connection plate is provided with a corresponding countersunk groove that matches the screw head. Therefore, the connection plate and the motor body are reliably fixed in both the radial and axial directions.

[0033] Furthermore, a center positioning boss 12 is provided around the motor shaft at the front center of the motor body, and a center positioning hole 23 is provided at the center of the connecting plate. The center positioning hole 23 cooperates with the center positioning boss 12 to facilitate the positioning of the connecting plate, thereby ensuring that the output shaft of the motor body is concentrically connected with the first-stage sun gear.

[0034] Specifically, the bearing assembly includes a double-row ball bearing 51 and an oil-containing bearing 53. The rear end of the inner ring is provided with a first positioning step 411 for positioning the front end of the double-row ball bearing, and the front end of the inner ring is provided with a second positioning step 412 for positioning the front end of the oil-containing bearing. The oil seal assembly includes a double-row oil seal 52, which is provided between the double-row ball bearing and the oil-containing bearing. A positioning retaining ring 54 and a gasket are installed on the front side of the integral injection molded end cover of the output shaft.

[0035] Assembly process after optimization: press oil-containing bearing - press double-row oil seal - press double-row ball bearing - press output shaft - install output shaft gasket - install positioning retaining ring - put in inner gear ring - put in gear - fix the motor body and connecting plate with axial locking screws - fix the inner gear ring and one-piece injection molded end cover with radial locking screws.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A reduction motor with simplified installation, comprising a motor body, a multi-stage planetary reduction assembly and an output shaft, wherein the motor body is provided with a motor shaft, the multi-stage planetary reduction assembly comprises an inner gear ring, a multi-stage planetary gear meshing with the inner gear ring, a first-stage sun gear meshing with the first-stage planetary gear, and a last-stage planet carrier for mounting a last-stage planetary gear, the first-stage sun gear is connected to the motor shaft, and the output shaft is connected to the last-stage planet carrier, characterized in that: The reduction motor also includes an integral injection molded end cover and a connecting plate, wherein the connecting plate connects the front end of the motor body and the rear end of the integral injection molded end cover, the multi-stage planetary reduction assembly is arranged on the inner side of the integral injection molded end cover, and the output shaft passes through the front part of the integral injection molded end cover and a bearing assembly and an oil seal assembly are arranged between the output shaft and the front part of the integral injection molded end cover.

2. A reduced speed motor with simplified installation according to claim 1, characterized in that: The one-piece injection-molded end cover is provided with a hollow structure for reducing weight and facilitating injection molding.

3. A reduced speed motor with simplified installation according to claim 2, characterized in that: The one-piece injection-molded end cover is provided with a cylinder body and an inner ring and an outer ring arranged inside and outside the cylinder body, and a hollow structure is provided between the inner ring, the outer ring and the cylinder body.

4. A speed reducer motor with simplified installation according to claim 3, characterized in that: The inner gear ring is embedded and installed on the inner side of the integral injection molded end cover, and a front end positioning portion for positioning the front end of the inner gear ring is provided at the position where the rear end of the inner gear ring connects with the cylinder body. The rear end of the inner gear ring is positioned by a connecting plate.

5. The simplified installation reduction motor according to claim 3, characterized in that: A concave ring is provided on the radial outer side of the outer ring.

6. The simplified installation reduction motor according to claim 1, characterized in that: The connecting plate is made of a POM material structure; and / or the planetary gear is made of a powder metallurgy structure.

7. The simplified installation reduction motor according to claim 1, characterized in that: An outer radial positioning step is provided at the rear end of the integral injection molded end cover, the connecting plate is positioned on the outer radial positioning step, the outer radial positioning step is radially connected with a radial locking screw, and an axial locking screw is provided between the connecting plate and the front end of the motor body.

8. The simplified installation reduction motor according to claim 7, characterized in that: A center positioning boss is arranged at the front center of the motor body around the motor shaft, and a center positioning hole is arranged at the center of the connecting plate, and the center positioning hole cooperates with the center positioning boss.

9. The simplified installation reduction motor according to claim 3, characterized in that: The bearing assembly includes a double-row ball bearing and an oil-containing bearing. The rear end of the inner ring is provided with a first positioning step for positioning the front end of the double-row ball bearing, and the front end of the inner ring is provided with a second positioning step for positioning the front end of the oil-containing bearing.

10. A speed reduction motor with simplified installation according to claim 9, characterized in that: The oil seal assembly comprises a double-row oil seal, and the double-row oil seal is arranged between the double-row ball bearing and the oil-containing bearing.

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