Motor assembly

Abstract

The utility model provides a motor assembly. The motor assembly comprises: a motor body having a motor shaft; the end cover is provided with a mounting hole, and the motor shaft is arranged in the mounting hole in a penetrating manner and is rotatably connected with the mounting hole; the waterproof structure is arranged on the motor shaft in a sleeving mode and matched with the motor shaft in a rotation stopping mode, and at least part of the waterproof structure covers an opening, penetrating out of the motor shaft, of the mounting hole so as to shield the opening; the waterproof structure is in clearance fit with the end cover. According to the utility model, the problem that the operation efficiency of the motor is influenced by the sealing mode of oil seal and sealing ring in the prior art is effectively solved.

Description

Technical Field

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

[0002] At present, an oil seal, a sealing ring and other structures are usually installed at the extended end of the motor shaft to achieve the waterproof function of the motor shaft. Specifically, the oil seal, the sealing ring and other structures are interference fit with the end cover or the motor shaft to improve the waterproof ability of the motor.

[0003] However, the above-mentioned sealing method of the oil seal and the sealing ring will have a certain impact on the operating efficiency of the motor, that is, it will reduce the operating efficiency of the motor to a certain extent and affect the operating performance of the motor. Utility Model Content

[0004] The main purpose of the utility model is to provide a motor assembly to solve the problem that the sealing method of oil seal and sealing ring adopted in the prior art affects the running efficiency of the motor.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a motor assembly, including: a motor body, having a motor shaft; an end cover, having a mounting hole, the motor shaft is passed through the mounting hole and is rotatably connected to the mounting hole; a waterproof structure, which is sleeved on the motor shaft and cooperates with the motor shaft to stop rotation, at least part of the waterproof structure is covered outside the opening of the motor shaft passing through the mounting hole to block the opening; wherein the waterproof structure is gap-matched with the end cover.

[0006] Furthermore, the end cover also has a mounting recess, which is arranged around the mounting hole, and at least a portion of the waterproof structure extends into the mounting recess and is gap-matched with the mounting recess to connect the waterproof structure and the end cover.

[0007] Furthermore, the waterproof structure includes: a plate body, having a through hole, the inner surface of the through hole having a first anti-rotation surface, the motor shaft passing through the through hole and having a second anti-rotation surface, the first anti-rotation surface and the second anti-rotation surface are parallel to each other; a surrounding plate, arranged on the plate body, the end of the surrounding plate away from the plate body extending into the installation recess and loosely fitting with the installation recess.

[0008] Furthermore, along the direction from the waterproof structure to the end cover, the outer diameter of the enclosure gradually increases.

[0009] Furthermore, the mounting recess is an annular groove, and the annular groove is adapted to the end of the enclosure away from the plate body.

[0010] Furthermore, the end cover also has a water outlet, one end of which is connected to the mounting recess, and the other end of which passes through the end cover; wherein the water outlet is located below the motor shaft.

[0011] Further, there is one water outlet; or, there are multiple water outlets, and the multiple water outlets are arranged at intervals along the extension direction and / or circumferential direction of the motor shaft.

[0012] Furthermore, the waterproof structure is an integrally formed structure.

[0013] Furthermore, the motor assembly also includes: a friction reducing structure, which is arranged at the connection between the waterproof structure and the end cover.

[0014] Furthermore, there is a preset gap between the plate body and the end cover.

[0015] The technical solution of the utility model is applied, and the motor assembly includes a motor body, an end cover and a waterproof structure. The motor body has a motor shaft, and the end cover has a mounting hole. The motor shaft is inserted into the mounting hole and is rotatably connected to the mounting hole. The waterproof structure is sleeved on the motor shaft and is engaged with the motor shaft to prevent rotation. In this way, since at least part of the waterproof structure is covered outside the opening of the mounting hole through which the motor shaft passes to block the opening, it can prevent water from entering the mounting hole or even the interior of the motor assembly through the above-mentioned opening, thereby playing a waterproof role.

[0016] Compared with the waterproofing method using oil seals and sealing rings in the prior art, the motor assembly in the present application uses a waterproof structure to cover the opening of the installation hole for waterproofing. The waterproof structure and the motor shaft are locked and rotate synchronously, rather than interference fit, thereby solving the problem of the sealing method using oil seals and sealing rings in the prior art affecting the operating efficiency of the motor, ensuring that the motor assembly will not affect the operating efficiency of the motor after the waterproof structure is installed. At the same time, the waterproof structure and the end cover are clearance-matched to ensure that the two can rotate relative to each other and reduce the structural wear of the end cover and the waterproof structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A cross-sectional view of an embodiment of a motor assembly according to the present utility model is shown;

[0019] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of the waterproof structure of the motor assembly;

[0020] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the end cover of the motor assembly;

[0021] Figure 4 Shows Figure 3An enlarged schematic diagram of point A of the end cap in FIG.

[0022] Figure 5 Shows Figure 1 A schematic diagram of the three-dimensional structure of the motor body of the motor assembly in FIG.

[0023] The above drawings include the following reference numerals:

[0024] 10. Motor body; 11. Motor shaft; 111. Second anti-rotation surface;

[0025] 20. end cover; 21. mounting hole; 211. opening; 22. mounting recess; 23. water outlet;

[0026] 30. Waterproof structure; 31. Plate body; 311. Through hole; 3111. First anti-rotation surface; 32. Enclosure. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0030] In order to solve the problem in the prior art that the sealing method using oil seals and sealing rings affects the operating efficiency of the motor, the present application provides a motor assembly.

[0031] like Figures 1 to 5 As shown, the motor assembly includes a motor body 10, an end cover 20 and a waterproof structure 30. The motor body 10 has a motor shaft 11, and the end cover 20 has a mounting hole 21. The motor shaft 11 is inserted into the mounting hole 21 and is rotatably connected to the mounting hole 21. The waterproof structure 30 is sleeved on the motor shaft 11 and is locked with the motor shaft 11. At least part of the waterproof structure 30 is covered outside the opening 211 of the mounting hole 21 through the motor shaft 11 to cover the opening 211. The waterproof structure 30 is clearance-matched with the end cover 20.

[0032] By applying the technical solution of this embodiment, since at least part of the waterproof structure 30 is covered outside the opening 211 through which the mounting hole 21 passes through the motor shaft 11 to block the opening 211, it is possible to prevent water from entering the mounting hole 21 or even the interior of the motor assembly through the opening 211, thereby achieving a waterproof effect.

[0033] Compared with the waterproofing method using oil seals and sealing rings in the prior art, the motor assembly in this embodiment uses a waterproof structure 30 to cover the opening 211 of the mounting hole 21 for waterproofing. The waterproof structure 30 and the motor shaft 11 are non-rotatably matched and rotate synchronously, rather than interference fit, thereby solving the problem of the sealing method using oil seals and sealing rings in the prior art affecting the operating efficiency of the motor, so as to ensure that the motor assembly will not affect the operating efficiency of the motor after the waterproof structure 30 is installed. At the same time, the waterproof structure 30 and the end cover 20 are clearance-matched to ensure that the two can rotate relative to each other and reduce the structural wear of the end cover 20 and the waterproof structure 30.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, the end cap 20 also has a mounting recess 22, which is arranged around the mounting hole 21, and at least part of the waterproof structure 30 extends into the mounting recess 22 and is gap-matched with the mounting recess 22 to connect the waterproof structure 30 and the end cap 20. In this way, under the premise of ensuring that the waterproof structure 30 can cover the opening 211, the above arrangement improves the assembly stability between the end cap 20 and the waterproof structure 30, and prevents the two from being separated from each other and affecting the waterproof reliability of the waterproof structure 30.

[0035] Specifically, at least part of the waterproof structure 30 extends into the mounting recess 22 and blocks the opening 211. Since the mounting recess 22 is located outside the mounting hole 21, the above-mentioned connection method between the waterproof structure 30 and the end cover 20 further ensures that the waterproof structure 30 can block the opening 211, thereby improving the waterproof reliability of the waterproof structure 30.

[0036] like Figure 1 , Figure 2 and Figure 5As shown, the waterproof structure 30 includes a plate body 31 and a panel 32. The plate body 31 has a through hole 311, and the inner surface of the through hole 311 has a first anti-rotation surface 3111. The motor shaft 11 is inserted into the through hole 311 and has a second anti-rotation surface 111. The first anti-rotation surface 3111 and the second anti-rotation surface 111 are parallel to each other. The panel 32 is arranged on the plate body 31, and the end of the panel 32 away from the plate body 31 extends into the mounting recess 22 and has a clearance fit with the mounting recess 22. In this way, the plate body 31 and the motor shaft 11 are anti-rotationally matched to achieve anti-rotation fit and synchronous rotation between the waterproof structure 30 and the motor shaft 11. At the same time, the end of the panel 32 away from the plate body 31 extends into the mounting recess 22 to achieve a clearance fit between the waterproof structure 30 and the end cover 20, thereby achieving the synchronous rotation of the waterproof structure 30 and the motor shaft 11, and the rotation of the waterproof structure 30 relative to the end cover 20, so as to ensure the waterproof reliability of the waterproof structure 30.

[0037] Specifically, the plate body 31 and the motor shaft 11 are arranged perpendicular to each other, and the enclosing plate 32 is connected to the surface of the plate body 31 facing the end cover 20, so that the waterproof structure 30 and the motor shaft 11 are connected through the plate body 31, and the waterproof structure 30 and the end cover 20 are connected through the enclosing plate 32. In this way, the above arrangement makes the structure of the waterproof structure 30 simpler, easier to process and realize, and reduces the processing cost and difficulty of the waterproof structure 30.

[0038] In this embodiment, there are two first anti-rotation surfaces 3111, and the two first anti-rotation surfaces 3111 are arranged parallel to each other. There are two second anti-rotation surfaces 111, and the two second anti-rotation surfaces 111 are arranged parallel to each other. The two first anti-rotation surfaces 3111 are arranged one-to-one with the two second anti-rotation surfaces 111, and each first anti-rotation surface 3111 is in contact with its corresponding second anti-rotation surface 111 and is anti-rotationally matched.

[0039] In this embodiment, the outer diameter of the enclosure 32 gradually increases along the direction from the waterproof structure 30 to the end cover 20. In this way, when the motor shaft 11 drives the waterproof structure 30 to rotate synchronously, the above-mentioned setting of the outer diameter of the enclosure 32 can throw the water attached thereto off from the waterproof structure 30, and further allow the water to enter the interior of the motor assembly through the opening 211. At the same time, the above-mentioned setting increases the matching area between the waterproof structure 30 and the end cover 20, thereby improving the assembly stability of the two.

[0040] In this embodiment, the mounting recess 22 is an annular groove, which is matched with the end of the enclosure 32 away from the plate body 31. In this way, the above arrangement ensures that the enclosure 32 can be matched with the annular groove to achieve the connection between the waterproof structure 30 and the end cover 20; on the other hand, the above arrangement makes the structure of the mounting recess 22 simpler, easier to process and realize, and reduces the processing cost and difficulty of the end cover 20.

[0041] In this embodiment, the mounting hole 21 is a circular hole, and the central axis of the annular groove is coaxially arranged with the central axis of the circular hole.

[0042] like Figure 1 , Figure 3 and Figure 4 As shown, the end cover 20 also has a water outlet 23, one end of the water outlet 23 is connected to the mounting recess 22, and the other end of the water outlet 23 passes through the end cover 20. In this way, even if water enters the mounting recess 22, it can be discharged through the water outlet 23, thereby preventing the water from adhering to the end cover 20 and entering the interior of the motor assembly.

[0043] In this embodiment, the water outlet 23 is located below the motor shaft 11. In this way, after the water enters the mounting recess 22, the water can flow along the inner surface of the mounting recess 22 to the water outlet 23 under its own weight and be discharged through the water outlet 23, without the need to set up an additional power device to suck the water entering the mounting recess 22. At the same time, the spatial position of the water outlet 23 on the end cover 20 is more reasonable.

[0044] Optionally, there is one water outlet 23; or, there are multiple water outlets 23, and the multiple water outlets 23 are arranged along the extension direction and / or circumferential intervals of the motor shaft 11. In this way, the above arrangement makes the number of water outlets 23 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff. At the same time, when there are multiple water outlets 23, the water entering the installation recess 22 can be discharged from any water outlet 23, further improving the water blowing reliability of the water outlet 23.

[0045] In this embodiment, there is only one water outlet 23, so that the structure of the end cover 20 is simpler, easier to process and realize, and the overall processing cost of the motor assembly is reduced.

[0046] In this embodiment, the waterproof structure 30 is an integrally formed structure. Thus, the above arrangement makes the processing of the waterproof structure 30 easier and simpler, reduces the processing cost and difficulty of the waterproof structure 30, and improves the structural strength of the waterproof structure 30 and prolongs the service life of the waterproof structure 30.

[0047] Optionally, the motor assembly further includes a friction reduction structure. The friction reduction structure is disposed at the connection between the waterproof structure 30 and the end cover 20. In this way, when the motor shaft 11 drives the waterproof structure 30 to rotate relative to the end cover 20, the friction reduction structure can reduce the friction between the waterproof structure 30 and the end cover 20, thereby reducing the structural wear of the waterproof structure 30 and the end cover 20, thereby extending the service life of the motor assembly and improving the operational reliability of the motor assembly.

[0048] In this embodiment, there is a preset gap between the plate body 31 and the end cover 20. In this way, after the motor assembly is assembled and the motor shaft 11 drives the waterproof structure 30 to rotate, the above arrangement can prevent motion interference between the plate body 31 and the end cover 20 and affect the normal rotation of the waterproof structure 30, thereby improving the waterproof reliability of the waterproof structure 30.

[0049] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0050] The motor assembly includes a motor body, an end cover and a waterproof structure. The motor body has a motor shaft, and the end cover has a mounting hole. The motor shaft is inserted into the mounting hole and is rotatably connected to the mounting hole. The waterproof structure is sleeved on the motor shaft and is engaged with the motor shaft to prevent rotation. In this way, since at least part of the waterproof structure is covered outside the opening of the mounting hole through which the motor shaft passes to cover the opening, it can prevent water from entering the mounting hole or even the interior of the motor assembly through the above opening, thereby playing a waterproof role.

[0051] Compared with the waterproofing method using oil seals and sealing rings in the prior art, the motor assembly in the present application uses a waterproof structure to cover the opening of the installation hole for waterproofing. The waterproof structure and the motor shaft are locked and rotate synchronously, rather than interference fit, thereby solving the problem of the sealing method using oil seals and sealing rings in the prior art affecting the operating efficiency of the motor, ensuring that the motor assembly will not affect the operating efficiency of the motor after the waterproof structure is installed. At the same time, the waterproof structure and the end cover are clearance-matched to ensure that the two can rotate relative to each other and reduce the structural wear of the end cover and the waterproof structure.

[0052] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A motor assembly, characterized in that: include: A motor body (10) having a motor shaft (11); The end cover (20) has a mounting hole (21), and the motor shaft (11) is inserted into the mounting hole (21) and is rotatably connected to the mounting hole (21); A waterproof structure (30) is sleeved on the motor shaft (11) and is anti-rotationally engaged with the motor shaft (11); at least a portion of the waterproof structure (30) is disposed outside an opening (211) of the mounting hole (21) extending out of the motor shaft (11) to shield the opening (211); wherein the waterproof structure (30) is clearance-engaged with the end cover (20).

2. The motor assembly according to claim 1, characterized in that: The end cover (20) further comprises a mounting recess (22), the mounting recess (22) being arranged around the mounting hole (21), and at least a portion of the waterproof structure (30) extends into the mounting recess (22) and is clearance-matched with the mounting recess (22) to connect the waterproof structure (30) and the end cover (20).

3. The motor assembly according to claim 2, characterized in that: The waterproof structure (30) comprises: The plate body (31) has a through hole (311), the inner surface of the through hole (311) has a first anti-rotation surface (3111), the motor shaft (11) is inserted into the through hole (311) and has a second anti-rotation surface (111), and the first anti-rotation surface (3111) and the second anti-rotation surface (111) are parallel to each other; A surrounding plate (32) is arranged on the plate body (31), and an end of the surrounding plate (32) away from the plate body (31) extends into the installation recess (22) and is clearance-matched with the installation recess (22).

4. The motor assembly according to claim 3, characterized in that: Along the direction from the waterproof structure (30) to the end cover (20), the outer diameter of the enclosure plate (32) gradually increases.

5. The motor assembly according to claim 3, characterized in that: The mounting recess (22) is an annular groove, and the annular groove is adapted to the end of the enclosure plate (32) away from the plate body (31).

6. The motor assembly according to claim 2, characterized in that: The end cover (20) also has a water outlet (23), one end of the water outlet (23) is in communication with the mounting recess (22), and the other end of the water outlet (23) passes through the end cover (20); wherein the water outlet (23) is located below the motor shaft (11).

7. The motor assembly according to claim 6, characterized in that There is one water outlet (23); or, there are multiple water outlets (23), and the multiple water outlets (23) are arranged at intervals along the extension direction and / or circumferential direction of the motor shaft (11).

8. The motor assembly according to claim 1, characterized in that The waterproof structure (30) is an integrally formed structure.

9. The motor assembly according to claim 1, characterized in that The motor assembly also includes: A friction-reducing structure is provided at the connection between the waterproof structure (30) and the end cover (20).

10. The motor assembly according to claim 3, characterized in that A preset gap is provided between the plate body (31) and the end cover (20).

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