Fan structure for eliminating motor shaft current

Abstract

The utility model discloses a fan structure for eliminating motor shaft current, and belongs to the field of motor components. Comprising a lining, a limiting hole is formed in the lining, a motor shaft is arranged in the limiting hole, a conductive mechanism is arranged between the motor shaft and the lining, the conductive mechanism comprises a conductive copper foil, and the conductive copper foil is arranged on the outer surface of the motor shaft in a sleeving mode. The two adjacent layers of conductive copper foils are separated through the insulating spacer to prevent the short circuit phenomenon, the two ends of the conductive copper foils are in good contact with the inner wall of the lining and the motor shaft respectively, and when the motor is started, the conductive copper foils can absorb in time and guide the conductive copper foils to a ground wire or other safety zones through the conductive paths of the conductive copper foils, so that the service life of the motor is prolonged. The possible shaft current is released, so that the problems of high cost and complicated implementation of a traditional shaft current leading method such as a grounding carbon brush and the like are solved, and the practicability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of motor components, and in particular to a fan structure for eliminating motor shaft current. Background Art

[0002] The shaft current problem is common in existing motors. The reason for the motor shaft current is that the motor magnetic field asymmetry and other reasons cause the circuit composed of the motor shaft, bearings and housing to have a changing magnetic flux, which generates an induced potential on the motor shaft and generates shaft current in the circuit.

[0003] Currently, conventional motor shaft currents are diverted using several mainstream methods, such as grounding carbon brushes. While these methods can mitigate the effects of shaft currents to a certain extent, they are generally costly and complex to implement. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present invention provides a fan structure that eliminates motor shaft current, overcomes the deficiencies of the prior art, and aims to solve the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a fan structure for eliminating motor shaft current, comprising a bushing, a limiting hole is opened inside the bushing, a motor shaft is arranged inside the limiting hole, a conductive mechanism is arranged between the motor shaft and the bushing, the conductive mechanism comprises a conductive copper foil, the conductive copper foil is arranged on the outer surface of the motor shaft, and the two ends of the conductive copper foil are respectively in contact with the inner wall of the bushing and the motor shaft, a plurality of conductive copper foils are provided, and the plurality of conductive copper foils are evenly distributed on the outer surface of the motor shaft, an insulating gasket is fixedly connected between two adjacent conductive copper foils, a supporting mechanism is provided inside the bushing, and a protective mechanism is provided on the surface of the bushing.

[0006] As a preferred embodiment, the support mechanism includes a spring, the spring is fixedly connected to the bushing, a baffle is fixedly connected to a side of the spring away from the bushing, and the baffle is slidably connected to the bushing.

[0007] By adopting the above technical solution, the spring is fixed by the bushing, the baffle is supported by the spring, and the baffle contacts the surface of the conductive copper foil, so that the conductive copper foil always contacts the surface of the motor shaft, which can better ensure that the conductive copper foil always contacts the surface of the motor shaft.

[0008] As a preferred embodiment, a receiving groove is provided inside the bushing, and the receiving groove is adapted to the baffle.

[0009] By adopting the above technical solution, a receiving groove is opened inside the bushing, the receiving groove is adapted to the baffle, and the baffle is then received by the receiving groove, so that the baffle can be better received.

[0010] As a preferred embodiment, the protection mechanism includes a wear-resistant layer, the wear-resistant layer is fixedly connected to the bushing, the side of the wear-resistant layer away from the bushing is fixedly connected with an anti-oxidation layer, the wear-resistant layer is made of polyamide, and the anti-oxidation layer is made of ceramic.

[0011] By adopting the above technical solution, the wear-resistant layer is fixed by the bushing, the wear-resistant layer is fixed by the anti-oxidation layer, the anti-oxidation property of the bushing is enhanced by the anti-oxidation layer, and the wear-resistant layer is enhanced by the wear-resistant layer, so that the bushing can be better protected.

[0012] As a preferred embodiment, an oil groove is provided on the surface of the bushing, and the oil groove is circular.

[0013] By adopting the above technical solution, an oil groove is opened on the surface of the bushing, and the oil groove is circular. The oil groove stores lubricating oil, and the lubricating oil enhances the heat dissipation of the bushing, which can better enhance the heat dissipation of the bushing.

[0014] As a preferred embodiment, a plurality of through holes are opened on the surface of the bushing, and the plurality of through holes are distributed in a ring shape on the surface of the bushing.

[0015] By adopting the above technical solution, a number of through holes are opened through the surface of the bushing, and the through holes are distributed in a ring shape on the surface of the bushing. The lubricating oil is then transported to the inside of the oil tank through the through holes, which can better transport the lubricating oil to the inside of the oil tank.

[0016] As a preferred embodiment, the baffle is semicircular, and a chrome plating layer is provided on a side of the baffle close to the motor shaft.

[0017] By adopting the above technical solution, the baffle is semicircular and a chrome plating layer is provided on the side of the baffle close to the motor shaft, which can better enhance the service life of the baffle.

[0018] Beneficial effects of this application:

[0019] 1. A fan structure for eliminating motor shaft current is provided by arranging conductive copper foil and insulating gaskets. The insulating gasket separates two adjacent layers of conductive copper foil to prevent the occurrence of short circuit. Then, the two ends of the conductive copper foil respectively achieve good contact with the inner wall of the bushing and the motor shaft. When the motor starts running, the conductive copper foil can absorb and guide the shaft current to the ground wire or other safe areas through its own conductive path, thereby releasing the possible shaft current. This avoids the traditional method of drawing away the shaft current, such as the grounding carbon brush, which generally has the problems of high cost and complex implementation, and improves practicality.

[0020] 2. This fan structure that eliminates motor shaft current is provided by setting a baffle and a spring, fixing the spring through a bushing, and then supporting the baffle by the spring, and then the baffle contacts the surface of the conductive copper foil, so that the conductive copper foil always contacts the surface of the motor shaft, avoiding the problem of the structure that the conductive copper foil cannot always contact the surface of the motor shaft, and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front structure of this application;

[0022] Figure 2 This is a schematic diagram of the expanded structure of this application;

[0023] Figure 3 A cross-sectional view of the support structure of this application;

[0024] Figure 4 A cross-sectional view of the conductive structure of the present application;

[0025] Figure 5 This is a schematic diagram of the protection organization structure of this application.

[0026] Numbers in the figure: 1. Bushing; 2. Support mechanism; 21. Baffle; 22. Spring; 3. Conductive mechanism; 31. Conductive copper foil; 32. Insulating gasket; 4. Protective mechanism; 41. Wear-resistant layer; 42. Anti-oxidation layer; 5. Motor shaft; 6. Limit hole; 7. Oil tank; 8. Through hole; 9. Receiving groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0028] Reference Figure 1-Figure 3A fan structure for eliminating motor shaft current includes a bushing 1, a limiting hole 6 is provided inside the bushing 1, a motor shaft 5 is provided inside the limiting hole 6, a conductive mechanism 3 is provided between the motor shaft 5 and the bushing 1, and the conductive mechanism 3 includes a conductive copper foil 31, the conductive copper foil 31 is sleeved on the surface of the motor shaft 5, and the two ends of the conductive copper foil 31 are respectively in contact with the inner wall of the bushing 1 and the motor shaft 5, and a plurality of conductive copper foils 31 are provided, and the plurality of conductive copper foils 31 are evenly distributed on the surface of the motor shaft 5, and two adjacent conductive copper foils 31 are fixedly connected. There is an insulating gasket 32, and a support mechanism 2 is provided inside the bushing 1. The support mechanism 2 includes a spring 22, which is fixedly connected to the bushing 1. The side of the spring 22 away from the bushing 1 is fixedly connected to a baffle 21, and the baffle 21 is slidably connected to the bushing 1; the spring 22 is fixed by the bushing 1, and the baffle 21 is supported by the spring 22, and then the baffle 21 contacts the surface of the conductive copper foil 31, so that the conductive copper foil 31 always contacts the surface of the motor shaft 5, which can better make the conductive copper foil 31 always contact the surface of the motor shaft 5.

[0029] Reference Figure 3 The interior of the bushing 1 is provided with a receiving groove 9, which is adapted to the baffle 21; the interior of the bushing 1 is provided with a receiving groove 9, which is adapted to the baffle 21, and the baffle 21 is accommodated by the receiving groove 9, which can better accommodate the baffle 21.

[0030] Reference Figure 5 A protective mechanism 4 is provided on the surface of the bushing 1, and the protective mechanism 4 includes a wear-resistant layer 41. The wear-resistant layer 41 is fixedly connected to the bushing 1, and an anti-oxidation layer 42 is fixedly connected to the side of the wear-resistant layer 41 away from the bushing 1. The wear-resistant layer 41 is made of polyamide, and the anti-oxidation layer 42 is made of ceramic. The wear-resistant layer 41 is fixed by the bushing 1, and the wear-resistant layer 41 fixes the anti-oxidation layer 42, and the anti-oxidation property of the bushing 1 is enhanced by the anti-oxidation layer 42, and the wear-resistant layer 41 enhances the wear resistance of the bushing 1, so that the bushing 1 can be better protected.

[0031] Reference Figure 1-Figure 3 An oil groove 7 is provided on the surface of the bushing 1, and the oil groove 7 is circular; an oil groove 7 is provided on the surface of the bushing 1, and the oil groove 7 is circular, and the oil groove 7 stores the lubricating oil, and the lubricating oil enhances the heat dissipation of the bushing 1, which can better enhance the heat dissipation of the bushing 1.

[0032] Reference Figure 1-Figure 3 A plurality of through holes 8 are provided on the surface of the bushing 1, and the plurality of through holes 8 are distributed in a ring shape on the surface of the bushing 1; a plurality of through holes 8 are provided on the surface of the bushing 1, and the plurality of through holes 8 are distributed in a ring shape on the surface of the bushing 1, and the lubricating oil is transported to the inside of the oil groove 7 through the through holes 8, which can better transport the lubricating oil to the inside of the oil groove 7.

[0033] Reference Figure 3 The baffle 21 is semicircular, and a chrome-plated layer is provided on the side of the baffle 21 close to the motor shaft 5; by making the baffle 21 semicircular and a chrome-plated layer on the side of the baffle 21 close to the motor shaft 5, the service life of the baffle 21 can be better enhanced.

[0034] Working principle: The conductive copper foil 31 is placed on the surface of the motor shaft 5, and then the two adjacent layers of conductive copper foil 31 are separated by an insulating gasket to prevent the occurrence of short circuit. Then the two ends of the conductive copper foil 31 are respectively in good contact with the inner wall of the bushing and the motor shaft. When the motor starts running, the conductive copper foil 31 can absorb and guide it to the ground wire or other safe areas through its own conductive path, releasing the possible shaft current. Then the motor shaft 5 is inserted into the limiting hole 6 of the bushing 1, and the bushing 1 fixes the spring 22. , and then the spring 22 supports the baffle 21, and then the baffle 21 contacts the surface of the conductive copper foil 31, so that the conductive copper foil 31 always contacts the surface of the motor shaft 5, and then the wear-resistant layer 41 fixes the anti-oxidation layer 42, and then the anti-oxidation layer 42 enhances the oxidation resistance of the bushing 1, and then the wear-resistant layer 41 enhances the wear resistance of the bushing 1, which can better protect the bushing 1, and then the lubricating oil is transported to the inside of the oil tank 7 by the through hole 8, and then the oil tank 7 stores the lubricating oil, and then the lubricating oil enhances the heat dissipation of the bushing 1.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "two ends," "one end," "the other end," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various modifications and variations to the present invention based on the spirit and principles of the present invention, and such modifications and variations are also within the scope of the present invention.

Claims

1. A fan structure for eliminating motor shaft current, comprising a bushing (1), characterized in that: A limiting hole (6) is provided inside the bushing (1), a motor shaft (5) is provided inside the limiting hole (6), a conductive mechanism (3) is provided between the motor shaft (5) and the bushing (1), the conductive mechanism (3) comprises a conductive copper foil (31), the conductive copper foil (31) is sleeved on the outer surface of the motor shaft (5), and the two ends of the conductive copper foil (31) are in contact with the inner wall of the bushing (1) and the motor shaft (5) respectively, a plurality of the conductive copper foils (31) are provided, and the plurality of the conductive copper foils (31) are evenly distributed on the outer surface of the motor shaft (5), and an insulating gasket (32) is fixedly connected between two adjacent conductive copper foils (31), a supporting mechanism (2) is provided inside the bushing (1), and a protective mechanism (4) is provided on the surface of the bushing (1).

2. A fan structure for eliminating motor shaft current according to claim 1, characterized in that: The support mechanism (2) comprises a spring (22), the spring (22) is fixedly connected to the bushing (1), a baffle (21) is fixedly connected to the side of the spring (22) away from the bushing (1), and the baffle (21) is slidably connected to the bushing (1).

3. The fan structure for eliminating motor shaft current according to claim 1, characterized in that: An accommodating groove (9) is provided inside the bushing (1), and the accommodating groove (9) is adapted to the baffle (21).

4. A fan structure for eliminating motor shaft current according to claim 1, characterized in that: The protection mechanism (4) comprises a wear-resistant layer (41), the wear-resistant layer (41) is fixedly connected to the bushing (1), and an anti-oxidation layer (42) is fixedly connected to the side of the wear-resistant layer (41) away from the bushing (1), the wear-resistant layer (41) is made of polyamide, and the anti-oxidation layer (42) is made of ceramic.

5. The fan structure for eliminating motor shaft current according to claim 1, characterized in that: An oil groove (7) is provided on the surface of the bushing (1), and the oil groove (7) is circular.

6. The fan structure for eliminating motor shaft current according to claim 1, characterized in that: A plurality of through holes (8) are provided on the surface of the bushing (1), and the plurality of through holes (8) are distributed in an annular shape on the surface of the bushing (1).

7. The fan structure for eliminating motor shaft current according to claim 2, characterized in that: The baffle (21) is semicircular, and a chrome plating layer is provided on a side of the baffle (21) close to the motor shaft (5).

Images