Connecting end cap and integrated reduction motor

Abstract

The application relates to a connecting end cover and an integrated speed reduction motor, the connecting end cover is used for cooperation with a motor and a speed reduction box, and comprises an end cover body, a shaft hole arranged on a central axis of the end cover body, a bearing arranged in the shaft hole, and a limiting protrusion arranged on the outer periphery of the end cover body and matched with the motor; a first side of the end cover body is matched with the motor, a second side opposite to the first side of the end cover body is matched with the speed reduction box; a first plug-in groove matched with the speed reduction box is arranged on the end cover body, and a connecting groove matched with the motor is arranged on the end cover body. The connecting end cover solves the problem that the concentricity error of the speed reduction box and the motor is relatively large, improves the sound quality of the speed reduction motor, and prolongs the service life of the speed reduction motor.

Description

Technical Field

[0001] The present invention relates to the field of reduction motors, in particular to a connecting end cover and an integrated reduction motor. Background Art

[0002] Traditional electric tailgate reduction motors typically consist of a separate motor and a reduction gearbox. When pairing the reduction gearbox with the motor, the reduction gearbox base is first secured to the front cover of the motor, and then the reduction gearbox housing is secured to the reduction gearbox base. The installation of the reduction gearbox and motor requires high concentricity. Existing solutions have misalignment between the reduction gearbox base and the front cover of the motor, as well as between the reduction gearbox base and the reduction gearbox housing. This cumulative misalignment results in significant concentricity after the reduction gearbox and motor are installed, resulting in a decrease in the sound quality of the reduction motor and, in severe cases, a reduction in the lifespan of the reduction motor. Summary of the Invention

[0003] Based on this, it is necessary to provide a connection end cover and an integrated reduction motor to address the problem that the concentricity error between the reduction box and the motor after installation in the traditional reduction motor is large, which leads to a decrease in the sound quality of the reduction motor and seriously affects the life of the reduction motor.

[0004] A connecting end cover for cooperating with a motor and a reduction gearbox, comprising: an end cover body, an axial hole arranged on the central axis of the end cover body, a bearing arranged in the axial hole, and a limiting protrusion arranged on the outer periphery of the end cover body and cooperating with the motor; a first side of the end cover body cooperates with the motor, and a second side of the end cover body opposite to the first side cooperates with the reduction gearbox; the end cover body is provided with a first plug-in slot for plugging and cooperating with the reduction gearbox, and a connecting slot for cooperating with the motor.

[0005] The connecting end cover of this technical solution solves the problem of large concentricity error between the reduction gearbox and the motor, improves the sound quality of the reduction motor, and extends the service life of the reduction motor. The connecting end cover of this technical solution combines the motor end cover and the base of the reduction gearbox into one. Therefore, when the reduction gearbox and the motor are assembled, there is no need to first fix the reduction gearbox base to the motor end cover and then fix the reduction gearbox housing to the reduction gearbox base. Instead, the reduction gearbox and the motor are directly installed on the two opposite sides of the connecting end cover. This not only simplifies the installation process, but also only needs to ensure the concentricity of the connecting end cover to ensure the concentricity of the motor and the reduction gearbox. The assembly error is greatly reduced, and it is easy to control the concentricity of the assembly.

[0006] Specifically, the connecting end cover of the present technical solution cooperates with the motor through the first side, and the bearing in the shaft hole is plugged into the rotor assembly of the motor to position the rotor assembly, thereby controlling the concentricity of the rotor assembly and the connecting end cover, and limiting the end of the motor housing through the limiting protrusion. At the same time, it is fixed to the motor through the connecting groove to prevent axial movement of the rotor assembly. The second side of the connecting end cover cooperates with the reduction gearbox and plugs into the reduction gearbox through the first plug-in groove. This is not only convenient and quick, but also can be disassembled without tools, and reduces the use of screws, reducing costs and labor. Therefore, the connecting end cover of the present technical solution positions the rotor assembly of the motor internally and positions the reduction gearbox externally. It only needs to control the concentricity of the connecting end cover to ensure the concentricity of the motor rotor assembly and the reduction gearbox.

[0007] In one embodiment, the limiting protrusion includes at least two groups of protruding edge segments, and the at least two groups of protruding edge segments are spaced apart along the circumferential direction of the end cover body.

[0008] In one embodiment, the end cover body is further provided with a first connection hole for cooperating with the reduction gearbox.

[0009] In one embodiment, the first connecting hole is located between two adjacent groups of the flange segments.

[0010] In one embodiment, the number of the connecting grooves is at least two, and at least two of the connecting grooves are spaced apart along the circumferential direction of the end cover body.

[0011] In one embodiment, the number of the connecting grooves matches the number of the flange segments, and is arranged in a one-to-one correspondence with the flange segments.

[0012] In one embodiment, it further includes a positioning protrusion provided on the end cover body and used to assist the connecting groove; or it further includes a positioning protrusion provided on the limiting protrusion and used to assist the connecting groove in matching.

[0013] In one embodiment, the number of the first plugging slots is at least two, and the at least two first plugging slots are arranged at intervals.

[0014] The present technical solution also provides an integrated reduction motor, comprising a motor, a reduction box, and a connecting end cover arranged between the motor and the reduction box, and as described in any one of the above items; the motor comprises a rotor assembly that cooperates with the bearing, a motor housing that cooperates with the limiting protrusion, and a connecting column arranged on the motor housing and cooperates with the connecting groove; the reduction box is provided with a first plug-in protrusion that cooperates with the first plug-in groove.

[0015] The connecting end cover of this technical solution solves the problem of large concentricity error between the reduction gearbox and the motor, improves the sound quality of the reduction motor, and extends the service life of the reduction motor. The connecting end cover of this technical solution is combined with the base of the reduction gearbox into one. Therefore, when the reduction gearbox and the motor are assembled, there is no need to first fix the reduction gearbox base to the connecting end cover and then fix the reduction gearbox housing to the reduction gearbox base. Instead, the reduction gearbox and the motor are directly installed on the two opposite sides of the connecting end cover. This not only simplifies the installation process, but also only needs to ensure the concentricity of the connecting end cover to ensure the concentricity of the motor and the reduction gearbox. The assembly error is greatly reduced, and it is easy to control the concentricity of the assembly.

[0016] Specifically, the connecting end cover of the present technical solution cooperates with the motor through the first side, and the bearing in the shaft hole is plugged into the rotor assembly of the motor to position the rotor assembly, thereby controlling the concentricity of the rotor assembly and the connecting end cover, and limiting the end of the motor housing through the limiting protrusion, while being fixed through the connecting groove and the connecting column to prevent axial movement of the rotor assembly; the second side of the connecting end cover cooperates with the reduction gearbox, and is plugged into the first plug-in groove and the first plug-in protrusion, which is not only convenient and quick, but also can be disassembled without tools, and reduces the use of screws, reducing costs and labor. Therefore, the connecting end cover of the present technical solution positions the rotor assembly of the motor internally and positions the reduction gearbox externally. It is only necessary to control the concentricity of the connecting end cover to ensure the concentricity of the rotor assembly of the motor and the reduction gearbox.

[0017] In one embodiment, the reduction gearbox includes a reduction gearbox housing, an inner ring gear connected to the reduction gearbox housing, a gear assembly meshing with both the inner ring gear and the rotor assembly, and an output member in transmission cooperation with the gear assembly; the first plug-in protrusion is provided on the inner ring gear; or, the first plug-in protrusion is provided on the reduction gearbox housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the connecting end cover according to the embodiment of the present invention is shown as follows Figure 1 ;

[0019] Figure 2 The structure of the connecting end cover according to the embodiment of the present invention is shown as follows Figure 2 ;

[0020] Figure 3 This is a structural diagram of the integrated reduction motor according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the internal structure;

[0022] Figure 5 for Figure 3 Schematic diagram of the structure of the reduction gearbox;

[0023] Figure 6 for Figure 5 Schematic diagram of the internal structure;

[0024] Figure 7 for Figure 3 Schematic diagram of the motor structure.

[0025] 100. Connecting end cover; 10. End cover body; 20. Bearing; 30. Limiting protrusion; 31. Protruding edge section; 40. First plug-in slot; 50. Connecting slot; 60. Second plug-in slot; 70. First connecting hole; 80. Positioning protrusion; 200. Motor; 210. Motor housing; 211. Connecting column; 212. Positioning groove; 220. Rotor assembly; 221. Motor gear; 240. Motor bottom cover; 300. Reducer; 310. First plug-in protrusion; 320. Second plug-in protrusion; 330. Second connecting hole; 340. Reducer housing; 350. Inner ring gear; 360. Gear assembly; 370. Output member; 400. Bolt assembly. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0030] like Figure 1-Figure 3The connecting end cover 100 shown is used to cooperate with the motor 200 and the reduction box 300, including: an end cover body 10, an axial hole provided on the central axis of the end cover body 10, a bearing 20 provided in the axial hole, and a limiting protrusion 30 provided on the outer periphery of the end cover body 10 and cooperating with the motor 200; the first side of the end cover body 10 cooperates with the motor 200, and the second side of the end cover body 10 opposite to the first side cooperates with the reduction box 300; the end cover body 10 is provided with a first plug-in slot 40 for plugging and cooperating with the reduction box 300, and a connecting slot 50 for cooperating with the motor 200.

[0031] The connecting end cover 100 of this embodiment solves the problem of large concentricity error between the reduction gearbox 300 and the motor 200, improves the sound quality of the reduction motor 200, and extends the service life of the reduction motor 200. The connecting end cover 100 of this embodiment combines the end cover of the motor 200 and the base of the reduction gearbox 300 into one. Therefore, when the reduction gearbox 300 and the motor 200 are assembled, there is no need to first fix the base of the reduction gearbox 300 on the connecting end cover 100 and then fix the outer shell of the reduction gearbox 300 on the base of the reduction gearbox 300. Instead, the reduction gearbox 300 and the motor 200 are directly installed on two opposite sides of the connecting end cover 100, respectively. This not only simplifies the installation process, but also only requires ensuring the concentricity of the connecting end cover 100 to ensure the concentricity of the motor 200 and the reduction gearbox 300. The assembly error is greatly reduced, and it is easy to control the concentricity of the assembly.

[0032] Combine Figure 4 As shown, the connecting end cap 100 of this embodiment cooperates with the motor 200 through the first side, and the bearing 20 in the shaft hole is plugged into the rotor assembly 220 of the motor 200 to position the rotor assembly 220, thereby controlling the concentricity of the rotor assembly 220 and the connecting end cap 100. The limiting protrusion 30 limits the end of the motor housing 210, and at the same time, it is fixed to the motor 200 through the connecting groove 50 to prevent the rotor assembly 220 from axial movement. The second side of the connecting end cap 100 cooperates with the reduction gearbox 300 and plugs into the reduction gearbox 300 through the first plug-in groove 40. This is not only convenient and quick, but also can be disassembled without tools, and reduces the use of screws, reducing costs and labor. Therefore, the connecting end cap 100 of this embodiment positions the rotor assembly of the motor 200 internally and positions the reduction gearbox 300 externally. Only the concentricity of the connecting end cap 100 needs to be controlled to ensure the concentricity of the rotor assembly of the motor 200 and the reduction gearbox 300.

[0033] Combine Figure 5-Figure 6As shown, the limiting protrusion 30 of this embodiment includes at least two groups of convex sections 31, which are spaced apart along the circumference of the end cover body 10. The convex sections 31 of this embodiment are arc-shaped sections that match the outer circumference of the end cover body 10, thereby forming an outwardly extending convex edge. Since the convex sections 31 are spaced apart, the intervals between adjacent convex sections 31 form a second insertion groove 60. The reduction gearbox 300 is provided with a first insertion protrusion 310 that respectively cooperates with the first insertion groove 40 and a second insertion protrusion 320 that cooperates with the second insertion groove 60. Thus, the second insertion groove 60 assists the first insertion groove 40 to achieve a fixed connection between the reduction gearbox 300 and the connecting end cover 100. The limiting protrusion 30 also has a certain limiting effect on the reduction gearbox housing 340.

[0034] To improve connection stability, the end cap body 10 of this embodiment further comprises a first connection hole 70 for mating with the reduction gearbox 300. In this embodiment, the first connection hole 70 is a bolt hole, and the reduction gearbox 300 is provided with a second connection hole 330 that mates with the first connection hole 70. During assembly, the bolt assembly 400 is inserted through the first connection hole 70 and the second connection hole 330 and tightened. Thus, in addition to being secured via the insertion slot, the reduction gearbox 300 and the connection end cap 100 are also secured via a bolt connection.

[0035] Specifically, in this embodiment, the first connection hole 70 is located between two adjacent groups of the flange segments 31, that is, the first connection hole 70 is located at the second insertion groove 60. The reduction gearbox 300 in this embodiment includes a reduction gearbox housing 340, which includes a second insertion protrusion 320 having a second connection hole 330.

[0036] In this embodiment, there are four flange segments 31, evenly spaced along the circumference of the end cap body 10. This ensures precise circumferential fit between the connecting end cap 100, the motor 200, and the reduction gearbox 300. Accordingly, there are four second insertion slots 60 and four first connection holes 70, each corresponding to a flange segment 31, ensuring a secure connection between the reduction gearbox 300 and the connecting end cap 100.

[0037] In order to improve the stability of the connection between the motor housing 210 and the connecting end cover 100 , in this embodiment, the number of the connecting grooves 50 is at least two, and the at least two connecting grooves 50 are spaced apart along the circumferential direction of the end cover body 10 .

[0038] Specifically, the number of the connecting grooves 50 in this embodiment matches the number of the flange sections 31, and is arranged in a one-to-one correspondence with the flange sections 31, and the connecting grooves 50 are provided on the flange sections 31. In other embodiments, the position and number of the connecting grooves 50 can be set as appropriate.

[0039] Combine Figure 7 As shown, this embodiment further includes a positioning protrusion 80 provided on the limiting protrusion 30 to assist in mating the connecting groove 50. The positioning protrusion 80 is disposed perpendicular to the lip section 31 and extends toward the first side of the end cap body 10. The motor housing 210 is provided with a connecting post 211 that mates with the connecting groove 50, and a positioning groove 212 that mates with the positioning protrusion 80. When the motor 200 is assembled with the connecting end cap 100, the positioning protrusion 80 and the limiting protrusion 30 jointly provide preliminary positioning for the motor housing 210, facilitating mating and connection between the connecting groove 50 and the connecting post 211. Furthermore, because the lip section 31 is connected to the positioning protrusion 80 and is perpendicular to each other, the lip section 31 can also mate with the outer edge of the end of the motor housing 210 when the positioning groove 212 mates with the positioning protrusion 80. Therefore, the provision of the positioning protrusion 80 not only facilitates the connection of the connecting groove 50 but also facilitates the positioning of the limiting protrusion 30 with the outer edge of the end of the motor housing 210. In this embodiment, the number of the positioning protrusion 80 is one, which may be increased as appropriate in other embodiments. In other embodiments, the positioning protrusion may be provided on the end cover body 10 .

[0040] In this embodiment, the connecting groove 50 is a riveted groove, and the connecting column 211 is a riveted column. In other embodiments, the connecting groove may be a snap-fit ​​groove, and the connecting column may be a snap-fit ​​column.

[0041] In this embodiment, there are at least two first insertion slots 40, and the at least two first insertion slots 40 are spaced apart. Specifically, in this embodiment, there are two first insertion slots 40, and the two first insertion slots 40 are symmetrically arranged along the shaft hole. This ensures that after the reduction gearbox 300 and the connecting end cover 100 are connected, the forces acting on the two are balanced, thereby improving the stability of the device operation.

[0042] This embodiment also provides an integrated reduction motor 200, including a motor 200, a reduction box 300, and a connecting end cover 100 arranged between the motor 200 and the reduction box 300, and as described in any one of the above items; the motor 200 includes a rotor assembly 220 that cooperates with the bearing 20, a motor housing 210 that cooperates with the limiting protrusion 30, and a connecting column 211 arranged on the motor housing 210 and cooperates with the connecting groove 50; the reduction box 300 is provided with a first plug-in protrusion 310 that cooperates with the first plug-in groove 40.

[0043] The connection end cover 100 of this embodiment solves the problem of large concentricity error between the reduction gearbox 300 and the motor 200, improves the sound quality of the reduction motor 200, and extends the service life of the reduction motor 200. The connection end cover 100 of this embodiment is combined with the base of the reduction gearbox 300. Therefore, when the reduction gearbox 300 and the motor 200 are assembled, there is no need to first fix the base of the reduction gearbox 300 on the connection end cover 100 and then fix the reduction gearbox 300 shell on the reduction gearbox 300 base. Instead, the reduction gearbox 300 and the motor 200 are directly installed on two opposite sides of the connection end cover 100, respectively. This not only simplifies the installation process, but also only needs to ensure the concentricity of the connection end cover 100 to ensure the concentricity of the motor 200 and the reduction gearbox 300. The assembly error is greatly reduced, and it is easy to control the concentricity of the assembly.

[0044] Specifically, the connecting end cap 100 of this embodiment cooperates with the motor 200 through a first side, and the bearing 20 in the shaft hole is plugged into and matched with the rotor assembly 220 of the motor 200, positioning the rotor assembly 220 to control the concentricity of the rotor assembly 220 and the connecting end cap 100, and limiting the end of the motor housing 210 through the limiting protrusion 30, while being fixed to the connecting column 211 through the connecting groove 50 to prevent axial movement of the rotor assembly; the second side of the connecting end cap 100 cooperates with the reduction gear box 300, and is plugged into and matched with the first plugging protrusion through the first plugging groove 40. This is not only convenient and quick, but also can be disassembled without tools, and reduces the use of screws, reducing costs and labor. Therefore, the connecting end cap 100 of this embodiment positions the rotor assembly of the motor 200 internally and positions the reduction gear box 300 externally. Only by controlling the concentricity of the connecting end cap 100 can the concentricity of the rotor assembly of the motor 200 and the reduction gear box 300 be ensured.

[0045] The reduction gearbox 300 in this embodiment includes a reduction gearbox housing 340, an inner ring gear 350 connected to the reduction gearbox housing 340, a gear assembly 360 meshing with both the inner ring gear 350 and the rotor assembly 220, and an output member 370 in transmission engagement with the gear assembly 360. In this embodiment, the inner ring gear 350 is integrally formed with the reduction gearbox housing 340. The first plug-in protrusion 310 is disposed on the inner ring gear 350, i.e., the first plug-in protrusion 310 is disposed perpendicular to the inner ring gear 350 and extends toward the connection end cap 100. By disposing the first plug-in protrusion 310 on the inner ring gear 350 and the second plug-in protrusion 320 on the reduction gearbox housing 340, force distribution is achieved across different components, resulting in more uniform force distribution, improved reliability, and extended service life. In other embodiments, the first plug-in protrusion 310 may also be disposed on the reduction gearbox housing 340.

[0046] Specifically, the rotor assembly 220 in this embodiment includes a motor gear 221 , and the rotor assembly 220 is engaged with the gear assembly 360 via the motor gear 221 to transmit motor power.

[0047] Furthermore, the conventional motor housing 210 is manufactured by a stretching process, which is costly. The motor housing in this embodiment is made by cutting an iron pipe, which reduces the manufacturing cost.

[0048] When the integrated reduction motor described in this embodiment is running, the rotor assembly rotates, driving the gear assembly to rotate, and because the inner ring gear 350 is fixed, the power of the motor gear is decelerated and output through the output member 370.

[0049] The motor 200 described in this embodiment also includes a motor bottom cover 240. The matching structure of the motor bottom cover 240 and the motor housing 210 can be set with reference to the matching structure of the connecting end cover 100 and the motor housing 210, and the design of the matching part of the motor housing 210 with the motor bottom cover 240 can refer to the design of the matching part of the motor housing 210 and the connecting end cover 100.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An integrated reduction motor, characterized in that: include: A connecting end cover, comprising an end cover body, an axial hole provided on the central axis of the end cover body, a bearing provided in the axial hole, a limiting protrusion provided on the outer periphery of the end cover body and used to cooperate with the motor, and a positioning protrusion provided on the limiting protrusion, wherein the limiting protrusion includes at least two groups of convex edge segments, and the at least two groups of convex edge segments are spaced apart along the circumferential direction of the end cover body; The motor includes a rotor assembly matched with the bearing, a motor housing matched with the limiting protrusion, and a connecting column and a positioning groove provided on the motor housing; A reduction box is provided with a first plug-in protrusion; The connecting end cover is arranged between the motor and the reduction gear box, the first side of the end cover body cooperates with the motor, and the second side of the end cover body opposite to the first side cooperates with the reduction gear box; the end cover body is provided with a first plug-in groove that plugs and cooperates with the first plug-in protrusion on the reduction gear box, and a connecting groove that cooperates with the connecting column on the motor housing, the positioning protrusion is arranged perpendicular to the protruding edge section and extends toward the first side of the end cover body, the positioning protrusion cooperates with the positioning groove, and the positioning protrusion is used to assist the connection groove in cooperation; The reduction gearbox includes a reduction gearbox housing, an inner gear ring connected to the reduction gearbox housing, a gear assembly meshing with the inner gear ring and the rotor assembly, and an output member in transmission cooperation with the gear assembly; the first plug-in protrusion is provided on the inner gear ring; A second plug-in slot is formed at the interval between adjacent convex edge sections, and a second plug-in protrusion matched with the second plug-in slot is provided on the reduction gearbox housing.

2. The integrated reduction motor according to claim 1, characterized in that: The end cover body is also provided with a first connecting hole for cooperating with the reduction box.

3. The integrated reduction motor according to claim 2, characterized in that: The first connecting hole is located between two adjacent groups of the flange segments.

4. The integrated reduction motor according to claim 1, characterized in that: The number of the connecting grooves is at least two, and the at least two connecting grooves are spaced apart along the circumferential direction of the end cover body.

5. The integrated reduction motor according to claim 4, characterized in that: The number of the connecting grooves matches the number of the flange segments and is arranged in a one-to-one correspondence with the flange segments.

6. The integrated reduction motor according to claim 1, characterized in that: The number of the first plugging slots is at least two, and the at least two first plugging slots are arranged at intervals.

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