Generator rear cover convenient for discharging carbon brush powder

Abstract

The utility model discloses a generator rear cover convenient to discharge carbon brush powder, which comprises a rear cover body and a dust cover, the top of the dust cover is provided with a first opening for a slip ring to enter an inner cavity, and the side part of the dust cover is provided with a second opening for a carbon brush to enter the inner cavity. The dust cover is located in the center of the inner wall of the rear cover cap body, the dust cover and the rear cover cap body are of an integrated structure, and the side, opposite to the second opening, of the dust cover is provided with a dust discharging groove used for discharging carbon dust. Therefore, the integrated structure simplifies the processing technology, is simple in installation, can prevent foreign matters in the external environment from damaging the carbon brush, reduces the fault rate of the generator, and prolongs the service life. By arranging the powder discharging groove, the sealing performance is guaranteed, meanwhile, carbon ash powder generated after the carbon brush is abraded can be discharged in time through the powder discharging groove, the problem that a generator does not generate electricity due to the fact that the carbon brush cannot be in complete contact with a collecting ring of a rotor assembly due to short circuit caused by clamping stagnation of the carbon brush is solved, the function of the carbon brush is guaranteed, and normal operation of the generator is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a generator rear cover which is convenient for discharging carbon brush powder. Background Art

[0002] The automobile internal combustion engine alternator generates electromotive force in a rotating magnetic field through a conductor, thereby generating electricity. Its core power generation components include a stator and a rotor. The stator is used as a conductor to generate electromotive force, and the rotor is used to generate a rotating magnetic field. The stator is supported by the front cover and rear cover of the automobile internal combustion engine alternator, and the rotor is supported by the front and rear bearings fixed on the front and rear covers. The pulley drives the rotor to rotate. In order for the rotor to rotate and generate a magnetic field, the coil on it needs to be connected to the excitation current. In order to energize the rotating rotor coil, two slip rings are designed on the rotor. After contacting two carbon brushes (carbon brushes are important components of the motor, used on the commutator or slip ring of the motor as a sliding contact body for deriving and importing current), the excitation current provided by the outside is obtained. Since the automobile internal combustion engine alternator is working, the surrounding area is full of dust, sand, mud and water, etc., and the working environment is harsh. If the friction part of the carbon brush and the slip ring is exposed in this environment, its life will be seriously shortened. Therefore, a dust cover is usually set at the rear side of the rear cover of the automobile internal combustion engine alternator, and the carbon brush is set in the dust cover.

[0003] The existing dust cover and the rear cover of the generator are separate structures. The dust cover needs to be separately clamped near the slip ring of the generator, which makes the processing technology of the dust cover complicated. Although the cooperation between the dust cover and the rear cover of the generator ensures the sealing of the entire dust cover, the carbon ash powder after the carbon brush is worn cannot be removed. After accumulation, it causes the carbon brush to short-circuit, affecting the function of the carbon brush. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model provides a generator rear cover which is convenient for discharging carbon brush powder.

[0005] The utility model proposes a generator rear cover that is convenient for discharging carbon brush powder, comprising a rear cover body and a dust cover, the top of the dust cover is provided with a first opening for the slip ring to enter the inner cavity, and the side is provided with a second opening for the carbon brush to enter the inner cavity, the dust cover is located at the center of the inner bottom wall of the rear cover body, and is set as an integrated structure with the rear cover body, and a powder discharge groove for discharging carbon ash powder is provided on the side of the dust cover opposite to the second opening.

[0006] Preferably, the powder discharge groove passes through the upper end of the dust cover and is parallel to the axial direction of the dust cover.

[0007] Preferably, a slot cover plate is further provided on the rear end outer surface of the dust cover and is arranged parallel to and spaced apart from the powder discharge slot. The slot cover plate can completely cover the powder discharge slot, and the first side end and bottom end of the slot cover plate are respectively fixed to the side end and bottom end of the powder discharge slot by side extension plates and bottom extension plates, and a gap for discharging carbon ash powder is formed between the second side end of the slot cover plate and the powder discharge slot.

[0008] Preferably, the groove cover plate is configured as an arc-shaped plate structure.

[0009] Preferably, the cover groove plate, the side extension plate, the bottom extension plate and the dust cover are configured as an integrated structure.

[0010] In summary, the utility model has the following beneficial effects: by setting the dust cover and the rear cover body as an integrated structure, the processing technology is simplified, which is not only simple to install, but also can prevent dust, muddy water or other tiny foreign matter in the external environment from damaging the carbon brush, thereby reducing the failure rate of the generator and extending the service life of the generator; and by providing a powder discharge groove for discharging carbon ash powder at the rear end of the dust cover, the carbon ash powder after the carbon brush is worn can be discharged in time through the powder discharge groove while ensuring the sealing, avoiding the problem of short circuit caused by the carbon brush being stuck and preventing it from fully contacting the collector ring of the rotor assembly, causing the generator to fail to generate electricity, thereby ensuring the function of the carbon brush and ensuring the normal operation of the generator.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional structure of the rear cover of the generator according to the embodiment of the utility model Figure 1 ;

[0013] Figure 2 The three-dimensional structure of the rear cover of the generator according to the embodiment of the utility model Figure 2 ;

[0014] Figure 3 The three-dimensional structure of the rear cover of the generator according to the embodiment of the utility model Figure 3 .

[0015] In the figure:

[0016] 1. Rear cover body; 2. Dust cover; 3. First opening; 4. Second opening; 5. Powder discharge slot; 6. Cover slot plate; 7. Side extension plate; 8. Bottom extension plate. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] like Figure 1-3 As shown, the present embodiment proposes a generator rear cover for facilitating the discharge of carbon brush powder, comprising a rear cover body 1 and a dust cover 2, the top of the dust cover 2 is provided with a first opening 3 for the slip ring to enter the inner cavity, and the side is provided with a second opening 4 for the carbon brush to enter the inner cavity, when the carbon brush is inserted into the inner cavity from the second opening 4, the carbon brush holder cooperates with the second opening 4 to close the second opening 4, the dust cover 2 is located at the center of the inner bottom wall of the rear cover body 1, and is set as an integrated structure with the rear cover body 1, and a powder discharge groove 5 for discharging carbon ash powder is provided on the side of the dust cover 2 opposite to the second opening 4.

[0019] In this way, by setting the dust cover and the rear cover body as an integrated structure, the processing technology is simplified, which is not only simple to install, but also can prevent dust, mud, water or other tiny foreign matter in the external environment from damaging the carbon brushes, thereby reducing the failure rate of the generator and extending the service life of the generator; and by providing a powder discharge groove for discharging carbon ash powder at the rear end of the dust cover, the carbon ash powder after the carbon brush is worn can be discharged in time through the powder discharge groove while ensuring the sealing, avoiding the problem of short circuit caused by the carbon brush being stuck and preventing it from fully contacting the collector ring of the rotor assembly, causing the generator to fail to generate electricity, thereby ensuring the function of the carbon brush and ensuring the normal operation of the generator.

[0020] Furthermore, if Figure 2 and Figure 3 As shown, the powder discharge groove 5 passes through the upper end of the dust cover 2, is parallel to the axial direction of the dust cover 2, and does not pass through to the bottom end of the dust cover 2.

[0021] Furthermore, a slot cover plate 6 is provided on the rear end outer surface of the dust cover 2 and is spaced apart from the powder discharge slot 5. The slot cover plate 6 can completely cover the powder discharge slot 5, and the first side end and the bottom end of the slot cover plate 6 are respectively fixed to the side end and the bottom end of the powder discharge slot 5 by the side extension plate 7 and the bottom extension plate 8, and a gap for discharging carbon ash powder is formed between the second side end of the slot cover plate 6 and the powder discharge slot 5.

[0022] Specifically, the slot cover plate 6 is configured as an arc-shaped plate structure.

[0023] In this way, the setting of the cover groove plate 6 can not only prevent the dust, muddy water or other tiny foreign matter in the external environment from entering the inner cavity to damage the carbon brush, but also discharge the carbon ash powder generated by the wear of the carbon brush inside the inner cavity out of the dust cover 2 through the powder discharge groove 5.

[0024] The cover groove plate 6, the side extension plate 7, the bottom extension plate 8 and the dust cover 2 are configured as an integrated structure, which can simplify the processing technology.

[0025] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A generator rear cover for discharging carbon brush powder, comprising a rear cover body and a dust cover, wherein the top of the dust cover is provided with a first opening for the slip ring to enter the inner cavity, and the side of the dust cover is provided with a second opening for the carbon brush to enter the inner cavity, characterized in that: The dust cover is located at the center of the inner bottom wall of the rear cover body and is an integrated structure with the rear cover body. A powder discharge groove for discharging carbon ash powder is arranged on a side of the dust cover opposite to the second opening.

2. The generator rear cover for facilitating the discharge of carbon brush powder according to claim 1, characterized in that: The powder discharge groove passes through the upper end of the dust cover and is parallel to the axial direction of the dust cover.

3. The generator rear cover for facilitating the discharge of carbon brush powder according to claim 2, characterized in that: A slot cover plate is also provided on the rear end outer surface of the dust cover and is arranged parallel to the powder discharge slot. The slot cover plate can completely cover the powder discharge slot, and the first side end and bottom end of the slot cover plate are respectively fixed to the side end and bottom end of the powder discharge slot by side extension plates and bottom extension plates, and a gap for discharging carbon ash powder is formed between the second side end of the slot cover plate and the powder discharge slot.

4. The generator rear cover for facilitating the discharge of carbon brush powder according to claim 3, characterized in that: The cover groove plate is configured as an arc-shaped plate structure.

5. The generator rear cover for facilitating the discharge of carbon brush powder according to claim 3, characterized in that: The cover groove plate, the side extension plate, the bottom extension plate and the dust cover are configured as an integrated structure.

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