reduction motor

Abstract

The utility model provides a kind of reduction motor, reduction motor includes: motor body;Speed reducer, including helical gear planetary reduction mechanism, spur gear planetary reduction mechanism, first locking piece and second locking piece, motor body, helical gear planetary reduction mechanism and spur gear planetary reduction mechanism are sequentially drivingly connected, helical gear planetary reduction mechanism includes first inner race, first locking piece extends along radial, and one end and the outer circumferential surface of first inner race abut, the other end passes through first inner race and is connected with motor body, second locking piece extends along axial, and one end and the end surface of first inner race abut, the other end passes through first inner race and is connected with spur gear planetary reduction mechanism.Such can obtain greater output torque, it is favorable to efficiently complete mowing, and, helical gear planetary reduction mechanism makes that speed reduction drive is more stable, load produced by helical gear engagement can be well absorbed, reduce noise, improve user experience simultaneously.

Description

Technical Field

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

[0002] Lawn mowers are common machines used for clearing weeds, and the geared motor is a crucial drive component. However, some lawn mower geared motors generate excessive noise during operation, negatively impacting the user experience, and their output torque is too low, making efficient mowing difficult. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a geared motor that has low noise and sufficient output torque, which can improve the user experience and efficiently complete lawn mowing.

[0004] This utility model provides a geared motor, which includes: a motor body; and a reduction device, including a helical planetary reduction mechanism, a spur planetary reduction mechanism, a first locking member, and a second locking member. The motor body, the helical planetary reduction mechanism, and the spur planetary reduction mechanism are sequentially and operatively connected. The helical planetary reduction mechanism includes a first internal gear ring. The first locking member extends radially, with one end abutting against the outer circumferential surface of the first internal gear ring and the other end passing through the first internal gear ring and connecting to the motor body. The second locking member extends axially, with one end abutting against the end face of the first internal gear ring and the other end passing through the first internal gear ring and connecting to the spur planetary reduction mechanism.

[0005] The geared motor provided by this utility model has at least the following beneficial effects:

[0006] A high reduction ratio transmission is achieved by combining helical and spur planetary reduction mechanisms, resulting in greater output torque and efficient lawn mowing. Furthermore, the helical planetary reduction mechanism ensures smoother transmission and effectively reduces noise. Additionally, by configuring the first internal gear ring in the helical planetary reduction mechanism to connect to the motor body via a radially extending first locking member and to the spur planetary reduction mechanism via an axially extending second locking member, the load generated by the helical gear meshing is effectively absorbed, further improving the smoothness of the reduction transmission, reducing noise, and enhancing the user experience.

[0007] In one embodiment of this implementation, the first internal gear ring has a first connecting hole, the motor body has a first threaded hole, the first locking member is constructed as a screw, and the first locking member passes through the first connecting hole and is threadedly engaged with the first threaded hole.

[0008] In one embodiment of this implementation, the end face of the first internal gear ring facing the motor body has a mounting protrusion, the motor body has a mounting groove, the mounting protrusion is accommodated in the mounting groove, the first connecting hole is formed in the mounting protrusion, and the first threaded hole is formed in the inner wall of the mounting groove.

[0009] In one embodiment of this implementation, the number of the first locking member, the mounting protrusion, and the mounting groove are the same and there are multiple sets of the first locking member, the mounting protrusion, and the mounting groove arranged in an array along the circumferential direction.

[0010] In one embodiment of this implementation, the spur gear planetary reduction mechanism includes a second internal gear ring and an end cover. The end cover is disposed on the side of the second internal gear ring opposite to the first internal gear ring. The first internal gear ring has a second connecting hole, the second internal gear ring has a third connecting hole, and the end cover has a second threaded hole. The second locking member is constructed as a screw, which passes through the second connecting hole and the third connecting hole and is threadedly engaged with the second threaded hole.

[0011] In one embodiment of this implementation, the first internal gear ring has a clearance groove, one end of the second locking member is accommodated in the clearance groove, and the second connecting hole is formed on the inner wall of the clearance groove.

[0012] In one embodiment of this implementation, the number of the second locking member and the clearance groove are the same and there are multiple sets of the second locking member and the clearance groove arranged in an array along the circumferential direction.

[0013] In one embodiment of this implementation, the helical planetary reduction mechanism includes a first sun gear, a first planet carrier, and a plurality of first planet gears. The first sun gear is connected to the output shaft of the motor body, and the plurality of first planet gears are rotatably disposed on the first planet carrier and mesh between the first sun gear and the first internal gear ring.

[0014] In one embodiment of this implementation, the spur gear planetary reduction mechanism includes a second internal gear ring, a second sun gear, a second planet carrier, and a plurality of second planet gears. The second sun gear is connected to the output shaft of the first planet carrier, and the plurality of second planet gears are rotatably disposed on the second planet carrier and mesh between the second sun gear and the second internal gear ring.

[0015] In one embodiment of this implementation, the spur gear planetary reduction mechanism includes a third sun gear, a third planet carrier, and a plurality of third planet gears. The third sun gear is connected to the output shaft of the second planet carrier, and the plurality of third planet gears are rotatably disposed on the third planet carrier and mesh between the third sun gear and the second internal gear ring.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a three-dimensional structural diagram of a geared motor (mounted on a housing) according to one embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the geared motor in its disassembled state;

[0020] Figure 3 yes Figure 1 A structural schematic diagram of a geared motor in its disassembled state from another perspective;

[0021] Figure 4 yes Figure 2 A three-dimensional structural diagram of the first internal gear ring of the geared motor;

[0022] Figure 5 yes Figure 2 A three-dimensional structural diagram of the motor body of the geared motor;

[0023] Figure 6 yes Figure 2 A cross-sectional view of the first internal gear ring, the second internal gear ring, the end cap, and the second locking member;

[0024] Figure 7 yes Figure 1 A schematic diagram of the structure of part of the reduction gear of the geared motor.

[0025] Figure label:

[0026] Gear motor 100;

[0027] Motor body 10; First threaded hole 101; Mounting slot 102;

[0028] Speed ​​reduction device 20;

[0029] Helical planetary reduction mechanism 21; first internal gear ring 211; first connecting hole 2111; mounting protrusion 2112; second connecting hole 2113; clearance groove 2114; first sun gear 212; first planet carrier 213; first planet gear 214;

[0030] 22 spur gear planetary reduction mechanism; 221 second internal gear ring; 2211 third connecting hole; 222 end cover; 2221 second threaded hole; 223 second sun gear; 224 second planet carrier; 225 second planet gear; 226 third sun gear; 227 third planet carrier; 228 third planet gear;

[0031] First locking element 23;

[0032] Second locking element 24;

[0033] Casing 200. Detailed Implementation

[0034] 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.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Please see Figures 1 to 3 , Figure 1 This is a three-dimensional structural schematic diagram of a geared motor 100 (mounted on housing 200) according to one embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the geared motor 100 in its disassembled state; Figure 3 yes Figure 1 This is a structural schematic diagram of the geared motor 100 from another perspective in its disassembled state. This utility model provides a geared motor 100, which includes a motor body 10 and a reduction gear 20. The reduction gear 20 includes a helical planetary reduction mechanism 21, a spur planetary reduction mechanism 22, a first locking member 23, and a second locking member 24. The motor body 10, the helical planetary reduction mechanism 21, and the spur planetary reduction mechanism 22 are sequentially connected in a driving manner. The helical planetary reduction mechanism 21 includes a first internal gear ring 211. The first locking member 23 extends radially, with one end abutting against the outer circumferential surface of the first internal gear ring 211, and the other end passing through the first internal gear ring 211 and connecting to the motor body 10. The second locking member 24 extends axially, with one end abutting against the end face of the first internal gear ring 211, and the other end passing through the first internal gear ring 211 and connecting to the spur planetary reduction mechanism 22.

[0040] Specifically, the first locking member 23 and the second locking member 24 can be constructed as threaded connections such as screws and bolts, or as interference-fit connections such as pins. It should be noted that the spur gear planetary reduction mechanism 22 uses spur gears for transmission, while the helical gear planetary reduction mechanism 21 uses helical gears for transmission.

[0041] It is understandable that the first locking member 23, which extends radially, can better withstand the circumferential load, and the second locking member 24, which extends axially, can better withstand the axial load. Therefore, the combination of the two can better absorb the load generated by the meshing of the helical gears.

[0042] The high reduction ratio transmission is achieved by the cooperation of helical planetary reduction mechanism 21 and spur planetary reduction mechanism 22, thereby obtaining a larger output torque, which is conducive to efficient lawn mowing. Moreover, due to the presence of helical planetary reduction mechanism 21, the reduction transmission is smoother and noise is effectively reduced. At the same time, the first internal gear ring 211 in helical planetary reduction mechanism 21 is connected to the motor body 10 through the radially extending first locking member 23 and to the spur planetary reduction mechanism 22 through the axially extending second locking member 24. The load generated by the helical gear meshing can be well absorbed, thereby further improving the smoothness of the reduction transmission, reducing noise, and improving the user experience.

[0043] In one embodiment of this implementation, please refer to Figures 2 to 5 , Figure 4 yes Figure 2 A three-dimensional structural diagram of the first internal gear ring 211 of the geared motor 100; Figure 5 yes Figure 2 A three-dimensional structural diagram of the motor body 10 of the geared motor 100. In order to realize the connection between the first internal gear ring 211 and the motor body 10 through the first locking member 23, the first internal gear ring 211 is provided with a first connecting hole 2111, the motor body 10 is provided with a first threaded hole 101, the first locking member 23 is constructed as a screw, the first locking member 23 passes through the first connecting hole 2111 and is threadedly engaged with the first threaded hole 101.

[0044] In one embodiment of this implementation, please refer to Figures 2 to 5 In order to improve the connection strength between the first internal gear ring 211 and the motor body 10, the end face of the first internal gear ring 211 facing the motor body 10 is formed with a mounting protrusion 2112, the motor body 10 is provided with a mounting groove 102, the mounting protrusion 2112 is accommodated in the mounting groove 102, the first connecting hole 2111 is opened in the mounting protrusion 2112, and the first threaded hole 101 is opened in the inner wall of the mounting groove 102.

[0045] In this embodiment, the shapes of the mounting protrusion 2112 and the mounting groove 102 are adapted to each other, and the diameter of the first internal gear ring 211 and the motor body 10 are the same, so that the first internal gear ring 211 and the outer peripheral surface of the motor body 10 are coplanar, resulting in a neat appearance.

[0046] In this embodiment, the first connecting hole 2111 is formed on the radial surface of the mounting protrusion 2112, and the first threaded hole 101 is formed on the radial inner wall of the mounting groove 102.

[0047] In one embodiment of this implementation, please refer to Figures 2 to 5In order to further improve the connection strength between the first internal gear ring 211 and the motor body 10, the number of the first locking member 23, the mounting protrusion 2112 and the mounting groove 102 are the same and there are multiple sets of the first locking member 23, the mounting protrusion 2112 and the mounting groove 102 arranged in an array along the circumferential direction.

[0048] In this embodiment, there are four first locking members 23, four mounting protrusions 2112, and four mounting grooves 102, which are arranged sequentially at 90-degree intervals in the circumferential direction.

[0049] In one embodiment of this implementation, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 , Figure 6 yes Figure 2 A cross-sectional view of the first internal gear ring 211, the second internal gear ring 221, the end cap 222, and the second locking member 24 is shown. To achieve the connection between the first internal gear ring 211 and the spur gear planetary reduction mechanism 22 via the second locking member 24, the spur gear planetary reduction mechanism 22 includes the second internal gear ring 221 and the end cap 222. The end cap 222 is located on the side of the second internal gear ring 221 facing away from the first internal gear ring 211. The first internal gear ring 211 has a second connecting hole 2113, the second internal gear ring 221 has a third connecting hole 2211, and the end cap 222 has a second threaded hole 2221. The second locking member 24 is constructed as a screw, passing through the second connecting hole 2113 and the third connecting hole 2211 and threadedly engaging with the second threaded hole 2221.

[0050] In one embodiment of this implementation, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 To avoid interference between the second locking member 24 and the motor body 10, the first internal gear ring 211 is provided with a relief groove 2114, one end of the second locking member 24 is accommodated in the relief groove 2114, and the second connecting hole 2113 is opened on the inner wall of the relief groove 2114.

[0051] In this embodiment, the second connecting hole 2113 is formed on the inner wall of the clearance groove 2114 in the axial direction.

[0052] In one embodiment of this implementation, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 In order to improve the connection strength of the first internal gear ring 211 and the second internal gear ring 221, the number of the second locking member 24 and the clearance groove 2114 are the same and there are multiple sets of the second locking member 24 and clearance groove 2114 arranged in an array along the circumferential direction.

[0053] In this embodiment, there are four second locking members 24 and four clearance grooves 2114, which are arranged sequentially at 90-degree intervals in the circumferential direction.

[0054] In one embodiment of this implementation, please refer to Figures 5 to 7 , Figure 7 yes Figure 1 A schematic diagram of the structure of the reduction device 20 of the geared motor 100. In order to realize the reduction transmission of the helical planetary reduction mechanism 21, the helical planetary reduction mechanism 21 includes a first sun gear 212, a first planet carrier 213 and a plurality of first planet gears 214. The first sun gear 212 is connected to the output shaft of the motor body 10, and the plurality of first planet gears 214 are rotatably arranged on the first planet carrier 213 and mesh between the first sun gear 212 and the first internal gear ring 211.

[0055] In this embodiment, the first sun gear 212 and the first planet gear 214 are both helical gears, and the inner side of the first internal gear ring 211 has matching helical teeth.

[0056] In one embodiment of this implementation, please refer to Figures 5 to 7 In order to achieve the speed reduction transmission of the spur gear planetary reduction mechanism 22, the spur gear planetary reduction mechanism 22 includes a second internal gear ring 221, a second sun gear 223, a second planet carrier 224 and a plurality of second planet gears 225. The second sun gear 223 is connected to the output shaft of the first planet carrier 213. The plurality of second planet gears 225 are rotatably disposed on the second planet carrier 224 and mesh between the second sun gear 223 and the second internal gear ring 221.

[0057] In this embodiment, the second sun gear 223 and the second planet gear 225 are both spur gears, and the inner side of the second internal gear ring 221 has matching positive gear teeth.

[0058] In one embodiment of this implementation, please refer to Figures 5 to 7 In order to improve the reduction ratio of the spur gear planetary reduction mechanism 22, the spur gear planetary reduction mechanism 22 includes a third sun gear 226, a third planet carrier 227 and a plurality of third planet gears 228. The third sun gear 226 is connected to the output shaft of the second planet carrier 224, and the plurality of third planet gears 228 are rotatably disposed on the third planet carrier 227 and mesh between the third sun gear 226 and the second internal gear ring 221.

[0059] In this embodiment, the third sun gear 226 and the third planet gear 228 are both spur gears, and the output shaft of the third planet carrier 227 is rotatably connected to the end cover 222 via a bearing (not shown).

[0060] Please refer to the following in this embodiment: Figure 1The geared motor 100 is located inside the housing 200. The output shaft of the third planetary carrier 227 is rotatably connected to the housing 200 via a bearing, and its output end extends out of the housing 200 and is used to connect with the wheels of the lawnmower.

[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A geared motor (100), characterized in that, include: Motor body (10); The speed reduction device (20) includes a helical planetary speed reduction mechanism (21), a spur planetary speed reduction mechanism (22), a first locking member (23), and a second locking member (24). The motor body (10), the helical planetary speed reduction mechanism (21), and the spur planetary speed reduction mechanism (22) are sequentially connected in a driving manner. The helical planetary speed reduction mechanism (21) includes a first internal gear ring (211). The first locking member (23) extends radially, and one end abuts against the outer peripheral surface of the first internal gear ring (211), while the other end passes through the first internal gear ring (211) and is connected to the motor body (10). The second locking member (24) extends axially, and one end abuts against the end face of the first internal gear ring (211), while the other end passes through the first internal gear ring (211) and is connected to the spur planetary speed reduction mechanism (22).

2. The geared motor (100) according to claim 1, characterized in that, The first internal gear ring (211) has a first connecting hole (2111), the motor body (10) has a first threaded hole (101), the first locking member (23) is constructed as a screw, the first locking member (23) passes through the first connecting hole (2111) and is threadedly engaged with the first threaded hole (101).

3. The geared motor (100) according to claim 2, characterized in that, The first internal gear ring (211) has a mounting protrusion (2112) on its end face facing the motor body (10). The motor body (10) has a mounting groove (102). The mounting protrusion (2112) is accommodated in the mounting groove (102). The first connecting hole (2111) is opened on the mounting protrusion (2112). The first threaded hole (101) is opened on the inner wall of the mounting groove (102).

4. The geared motor (100) according to claim 3, characterized in that, The number of the first locking member (23), the mounting protrusion (2112) and the mounting groove (102) are the same and there are multiple of each. Multiple sets of the first locking member (23), the mounting protrusion (2112) and the mounting groove (102) are arranged in an array along the circumferential direction.

5. The geared motor (100) according to claim 1, characterized in that, The spur gear planetary reduction mechanism (22) includes a second internal gear ring (221) and an end cap (222). The end cap (222) is located on the side of the second internal gear ring (221) facing away from the first internal gear ring (211). The first internal gear ring (211) has a second connecting hole (2113), the second internal gear ring (221) has a third connecting hole (2211), and the end cap (222) has a second threaded hole (2221). The second locking member (24) is constructed as a screw. The second locking member (24) passes through the second connecting hole (2113) and the third connecting hole (2211) and is threadedly engaged with the second threaded hole (2221).

6. The geared motor (100) according to claim 5, characterized in that, The first internal gear ring (211) has a relief groove (2114), one end of the second locking member (24) is accommodated in the relief groove (2114), and the second connecting hole (2113) is opened on the inner wall of the relief groove (2114).

7. The geared motor (100) according to claim 6, characterized in that, The number of the second locking member (24) and the clearance groove (2114) are the same and there are multiple sets of the second locking member (24) and the clearance groove (2114) are arranged in an array along the circumferential direction.

8. The geared motor (100) according to claim 1, characterized in that, The helical planetary reduction mechanism (21) includes a first sun gear (212), a first planet carrier (213) and a plurality of first planet gears (214). The first sun gear (212) is connected to the output shaft of the motor body (10). The plurality of first planet gears (214) are rotatably disposed on the first planet carrier (213) and mesh between the first sun gear (212) and the first internal gear ring (211).

9. The geared motor (100) according to claim 8, characterized in that, The spur gear planetary reduction mechanism (22) includes a second internal gear ring (221), a second sun gear (223), a second planet carrier (224), and a plurality of second planet gears (225). The second sun gear (223) is connected to the output shaft of the first planet carrier (213). The plurality of second planet gears (225) are rotatably disposed on the second planet carrier (224) and mesh between the second sun gear (223) and the second internal gear ring (221).

10. The geared motor (100) according to claim 9, characterized in that, The spur gear planetary reduction mechanism (22) includes a third sun gear (226), a third planet carrier (227), and a plurality of third planet gears (228). The third sun gear (226) is connected to the output shaft of the second planet carrier (224). The plurality of third planet gears (228) are rotatably disposed on the third planet carrier (227) and mesh between the third sun gear (226) and the second internal gear ring (221).

Images