Low-noise fan brush holder

Abstract

The utility model provides a low-noise fan brush holder. According to the technical scheme, the low-noise fan brush holder is characterized by comprising a mounting ring and two carbon brushes arranged on the mounting ring; the carbon brush is elastically arranged in the mounting seat; the mounting seat comprises a track pipe with a square-shaped section; square notches are formed in the two sides of the track pipe. A transverse through hole is formed in the carbon brush; the transverse through hole is opposite to the square notch; an annular elastic piece penetrates through the transverse through holes in the two carbon brushes; the annular elastic piece is arranged to be circular and deforms under the action of external force to form an oval shape. The annular elastic piece comprises two arc-shaped round rods; the middle part of the arc-shaped round rod is matched with the transverse through hole; the middles of the arc-shaped round rods are fixedly connected with the transverse through holes in an inserted mode, and an arc-shaped block is fixedly arranged between the two arc-shaped round rods. The motor has the advantages of being low in motor noise, convenient to use and capable of improving the use experience of a user.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fan motors, and in particular to a low-noise fan brush holder. BACKGROUND

[0002] A fan is driven by a motor, and the motor comprises a brush, which is an important component of the motor and is responsible for conducting current between rotating parts and stationary parts. The brush is mostly made of graphite and is also called a carbon brush. The brush is assembled on a commutator or a slip ring and is a sliding contact body, which has the characteristics of smoothness, wear resistance and good electrical conductivity. According to different applications, they are either partially metal parts or completely made of metal. In actual use, a slip ring is usually equipped with at least two brushes to avoid a single brush from becoming an open circuit due to poor contact. The existing carbon brush is connected with a spring, which provides elastic support force for the carbon brush. Because the carbon brush is matched with the rotation of the commutator or the slip ring, vibration is caused, and the existence of the spring amplifies the vibration and generates noise, which affects the use of the product and causes a poor experience for the user. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the application embodiment is to provide a low-noise fan brush holder to solve the technical problem of large noise in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: a low-noise fan brush holder is provided, which comprises a mounting ring and two carbon brushes arranged on the mounting ring; the carbon brush is elastically arranged in a mounting seat; the mounting seat comprises a track pipe with a cross-section in the shape of a square hole; square notches are arranged on both sides of the track pipe; a transverse through hole is arranged on the carbon brush; the transverse through hole is opposite to the square notch; an annular elastic member passes through the transverse through holes on the two carbon brushes; the annular elastic member is arranged in a circular shape and is deformed into an elliptical shape under the action of an external force.

[0005] Through the above technical scheme, the track pipe is used to limit the square carbon brush, the carbon brush is abutted against the commutator under the action of elastic support force, contact is achieved, the annular elastic member can be used to provide elastic support force, the annular elastic member has a simple structure compared with the spring, can provide greater support force, and can reduce the moving stroke of the carbon brush, so that the noise can be effectively reduced compared with the traditional spring structure; the square notches are arranged to facilitate the movement of the carbon brush along the track of the track pipe and avoid limiting the annular elastic member.

[0006] Optionally, the annular elastic member comprises two arc-shaped round rods; the middle parts of the arc-shaped round rods are matched with the transverse through holes; the middle parts of the arc-shaped round rods are fixedly inserted into the transverse through holes, and an arc-shaped block is fixedly arranged between the two arc-shaped round rods.

[0007] Through the above technical solution, the arc-shaped round rod is made of non-conductive material and is elastic. By squeezing the arc block by external force, the originally circular annular elastic part is changed to an elliptical shape, thereby realizing the movement of the carbon brush, facilitating the installation of the commutator and the abutment of the commutator after installation; the arc block can be set to an elastic metal material.

[0008] Optionally, the annular elastic member is made of insulating material; both sides of the lower end of the track tube extend outward to form an extension plate; the extension plate is fixedly connected to the mounting ring by screws; and the mounting ring is made of insulating material.

[0009] Through the above technical solution, the extension plate and the track tube are integrated into a single piece to form an "X" shape, which is convenient for detachable installation.

[0010] Optionally, a connection hole is provided on the back of the carbon brush; an internal thread is provided in the connection hole, and the connection hole is connected to an external power supply wire.

[0011] By setting up the above technical solution, after the external power line is placed in the connection hole, it can be fixed by screws, or connected by plugging and gluing.

[0012] Optionally, the track tube and the extension block form an "X" shape; the lower surface of the carbon brush is in sliding contact with the upper surface of the mounting ring; a plurality of mounting holes are provided on the mounting ring; the mounting ring and the annular elastic member are arranged coaxially.

[0013] By means of the above technical solution, screws are passed through the mounting holes to connect the mounting ring to other parts of the motor, such as the end cover or the motor housing.

[0014] Beneficial effects of the present application: Compared with the prior art, the low-noise fan brush holder provided by the present application does not have a spring, and the noise is lower than that of a motor with a spring, thereby facilitating use and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in this application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0017] Figure 2 This is a structural diagram from another angle of an embodiment of the present application.

[0018] Among them, the figure marks in the figure are: 1, mounting ring; 2, carbon brush; 3, track tube; 4, square notch; 5, transverse through hole; 6, arc-shaped round rod; 7, arc-shaped block; 8, extension plate; 9, connecting hole; 10, mounting hole. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, "several" means two or more, unless otherwise specifically defined.

[0023] like Figures 1 to 2 As shown, the purpose of the embodiment of the present application is to provide a low-noise fan brush holder to solve the technical problem of high noise in the prior art. To achieve the above purpose, the technical solution adopted by the present application is as follows: providing a low-noise fan brush holder: comprising a mounting ring 1 and two carbon brushes 2 arranged on the mounting ring 1; the carbon brushes 2 are elastically arranged in a mounting seat; the mounting seat includes a track tube 3 with a square cross-section; the track tube 3 is provided with square notches 4 on both sides; the carbon brushes 2 are provided with transverse through holes 5; the transverse through holes 5 are opposite to the square notches 4; and further comprising an annular elastic member passing through the transverse through holes 5 of the two carbon brushes 2; the annular elastic member is configured as a circle and deforms into an elliptical shape under the action of an external force.

[0024] Through the above-mentioned technical solution, the track tube 3 is used to limit the square carbon brush 2. The carbon brush 2 is offset from the commutator under the action of the elastic support force to achieve contact, and the annular elastic part can be used to provide elastic support force. Compared with the spring, it has a simple structure, provides greater support force, and reduces the moving stroke of the carbon brush 2. Compared with the traditional spring structure, it can effectively reduce noise; the setting of the square notch 4 can avoid limiting the annular elastic part when the carbon brush 2 moves along the track of the track tube 3.

[0025] Optionally, the annular elastic member includes two arc-shaped round rods 6; the middle portion of the arc-shaped round rod 6 cooperates with the transverse through hole 5; the middle portion of the arc-shaped round rod 6 is fixedly plugged into the transverse through hole 5, and an arc block 7 is fixedly arranged between the two arc-shaped round rods 6.

[0026] Through the above technical solution, the arc-shaped round rod 6 is made of non-conductive material and is elastic. By squeezing the arc block 7 by external force, the originally circular annular elastic part is changed to an elliptical shape, thereby realizing the movement of the carbon brush 2, facilitating the installation of the commutator and the abutment of the commutator after installation; the arc block 7 can be set to an elastic metal material.

[0027] Optionally, the annular elastic member is made of insulating material; both sides of the lower end of the track tube 3 extend outward to form an extension plate 8; the extension plate 8 is fixedly connected to the mounting ring 1 by screws; and the mounting ring 1 is made of insulating material.

[0028] Through the above technical solution, the extension plate 8 and the track tube 3 are integrally arranged to form an "X" shape, which is convenient for detachable installation.

[0029] Optionally, a connection hole 9 is provided on the back of the carbon brush 2; an internal thread is provided in the connection hole 9, and the connection hole 9 is connected to an external power supply wire.

[0030] By setting up the above technical solution, after the external power line is placed in the connection hole 9, it is fixed by screws, and can also be connected by plugging and gluing.

[0031] Optionally, the track tube 3 and the extension block form an X shape; the lower surface of the carbon brush 2 is in sliding contact with the upper surface of the mounting ring 1; a plurality of mounting holes 10 are provided on the mounting ring 1; the mounting ring 1 and the annular elastic member are arranged coaxially.

[0032] By means of the above technical solution, screws pass through the mounting holes 10 to connect the mounting ring 1 with other components of the motor, such as the end cover or the motor housing.

[0033] Beneficial effects of the present application: Compared with the prior art, the low-noise fan brush holder provided by the present application does not have a spring, and the noise is lower than that of a motor with a spring, thereby facilitating use and improving the user experience.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which are not provided in detail for the sake of simplicity.

[0035] This application is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A low-noise fan brush holder, characterized by: The invention comprises a mounting ring (1) and two carbon brushes (2) arranged on the mounting ring (1); the carbon brushes (2) are elastically arranged in a mounting seat; the mounting seat comprises a track tube (3) with a square-shaped cross section; square notches (4) are arranged on both sides of the track tube (3); a transverse through hole (5) is arranged on the carbon brush (2); the transverse through hole (5) is opposite to the square notch (4); and an annular elastic member is also included, which passes through the transverse through holes (5) on the two carbon brushes (2); the annular elastic member is arranged in a circular shape and deforms under the action of an external force to form an elliptical shape.

2. The low-noise fan brush holder according to claim 1, characterized in that: The annular elastic member comprises two arc-shaped round rods (6); the middle portion of the arc-shaped round rod (6) cooperates with the transverse through hole (5); the middle portion of the arc-shaped round rod (6) is fixedly plugged into the transverse through hole (5), and an arc-shaped block (7) is fixedly arranged between the two arc-shaped round rods (6).

3. The low-noise fan brush holder according to claim 1, characterized in that: The annular elastic member is made of insulating material; both sides of the lower end of the track tube (3) extend outward to form an extension plate (8); the extension plate (8) is fixedly connected to the mounting ring (1) by screws; and the mounting ring (1) is made of insulating material.

4. The low-noise fan brush holder according to claim 1, 2 or 3, characterized in that: The back of the carbon brush (2) is provided with a connection hole (9); an internal thread is provided in the connection hole (9), and the connection hole (9) is connected to an external power supply wire.

5. The low-noise fan brush holder according to claim 3, characterized in that: The track tube (3) and the extension block form an "X" shape; the lower surface of the carbon brush (2) is in sliding contact with the upper surface of the mounting ring (1); a plurality of mounting holes (10) are provided on the mounting ring (1); and the mounting ring (1) and the annular elastic member are arranged coaxially.

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