Carbon brush type generator

Abstract

The utility model discloses a carbon brush type generator, which comprises a brush box with a hollow structure inside, and a carbon brush inserted in the brush box and used for abutting against the surface of a slip ring of the generator, the back of the brush box is oppositely provided with a turnover pressing plate, and a spring capable of being rebounded and compressed is arranged between the upper part of the surface of the pressing plate and the back of the brush box. A pressing block with one end extending into the brush box is arranged on the lower portion of the surface, on the same side as the spring, of the pressing plate, and the pressing block abuts against the carbon brush to stretch out and draw back. According to the carbon brush type generator, when the rotating shaft rotates, the convex rod can push the convex block to retract towards one side of the spring, then the vertical pressing plate can rotate, one end of the pressing block can be separated from one side of the outer surface of the carbon brush, and the carbon brush is in stable contact with the sliding ring under the action of constant pressure of the coil spring.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon brush type generators, in particular to a carbon brush type generator. Background Art

[0002] The brush holder is a mechanical guide groove that holds and maintains the position of the carbon brush in the brushed motor. It consists of the brush box, scroll spring and pressure finger. It is the part that installs the brush and keeps it in contact with the sliding surface under pressure.

[0003] Therefore, when the carbon brush needs to contact the generator slip ring, the downward pressure of the coil spring on the top of the carbon brush can make the bottom of the spring contact the generator slip ring. In addition, when the spring-type brush box is pulled out of the brush holder, the pick-shaped plate spring that prevents the carbon brush from popping out cannot be completely retracted during operation, resulting in a deep groove on the back of the carbon brush during operation. In severe cases, it will hinder the carbon brush from moving freely in the brush holder, causing the carbon brush to be falsely connected. Utility Model Content

[0004] The utility model aims to provide a carbon brush type generator to solve the technical problem that the carbon brush virtual connection phenomenon often occurs in the background technology.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a carbon brush type generator, comprising a brush box with a hollow internal structure, and a carbon brush inserted inside the brush box for contacting the surface of the generator slip ring, a reversible pressure plate is relatively provided on the back of the brush box, a reboundable and compressible spring is provided between the upper surface of the pressure plate and the back of the brush box, and a pressure block with one end extending to the inside of the brush box is provided on the lower surface of the pressure plate on the same side as the spring, so that the carbon brush can be pressed against the expansion and contraction.

[0006] Preferably, a tightening hole is provided inside the back of the brush box corresponding to the surface of the carbon brush, and one end of the pressing block extends into the tightening hole.

[0007] Preferably, a support is horizontally arranged on the back of the brush box, and the rotation of the pressing plate is achieved by a rotating rod provided on one side of the pressing plate that passes through the support as an axis, so that the pressing plate can rotate.

[0008] Preferably, a base is provided on the back of the brush box extending to one side, and a rotating hole is provided through the top of the base, and a rotatable shaft is coaxially provided inside the rotating hole.

[0009] Preferably, the rotation of the rotating shaft is achieved by holding and rotating an insulating handle fixedly provided on the top of the rotating shaft.

[0010] Preferably, a protrusion is provided on the surface of the pressing plate extending toward one side of the base, and the protrusion is located on the upper part of the pressing plate.

[0011] Preferably, the outer peripheral surface of the rotating shaft further comprises a convex rod which can press against and push the convex block, the convex rod and the convex block are located in the same horizontal plane, and a convex rod groove is provided inside the base for allowing the convex rod to rotate along its path.

[0012] Preferably, a wire hole is opened downwardly on one side of the upper end of the base, and an air guide tube is provided inside the wire hole for guiding the gas to flow, and the end of the air guide tube is connected to the upper end of the pressure plate, and a docking joint that can be connected to a corresponding air pump is provided on the top of the air guide tube.

[0013] Preferably, an air passage communicating with the air guide tube is provided inside the pressing plate, and an exhaust hole for exhausting gas is provided at the end of the pressing block and extends through the air passage.

[0014] Preferably, the length of the carbon brush is 100 mm.

[0015] The carbon brush type generator of the utility model has the following advantages:

[0016] 1. A carbon brush type generator, when the carbon brush is not working, the elastic force of the spring pushes back, so that the pressure plate can rotate with the rotating rod as the axis, so that one end of the pressure block presses against the outer surface of the carbon brush to prevent the carbon brush from being ejected under the action of the coil spring when the carbon brush is not working.

[0017] 2. In this type of carbon brush type generator, after the brush box is installed, the insulating handle can be turned to lock it. As the shaft rotates, the protrusion can be pushed back by the protruding rod, and then the exhaust hole opened at the end of the pressing block can be aligned with the carbon brush. Therefore, after the carbon brush is used for a long time, its air pump is connected to the docking joint, and its high-pressure gas can be discharged from the exhaust hole through the corresponding air duct to achieve the effect of removing carbon powder.

[0018] 3. A carbon brush type generator, when the shaft rotates, its convex rod can push the convex block to retract to the spring side, then the vertical pressure plate can rotate, and one end of the pressure block can be separated from the outer surface of the carbon brush. Under the action of the constant pressure of the coil spring, the carbon brush maintains stable contact with the slip ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 The overall explosion structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 4 The overall explosion structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 5 It is a schematic diagram of the overall planar structure of the utility model as viewed from above;

[0025] Figure 6 It is a schematic diagram of the AA cross-sectional structure of the utility model;

[0026] Figure 7 It is a schematic diagram of the internal structure of the pressing plate of the utility model.

[0027] Explanation of the markings in the figure: 1. Brush box; 11. Partition; 12. Tightening hole; 13. Base; 14. Rotating hole; 15. Wire hole; 16. Support; 17. Protruding rod groove; 2. Carbon brush; 21. Wire; 3. Connecting strip; 31. Coil spring; 4. Pressure plate; 41. Air guide tube; 42. Butt joint; 43. Pressure block; 44. Exhaust hole; 45. Airway; 46. Protrusion; 47. Spring; 48. Rotating rod; 5. Insulating handle; 51. Rotating shaft; 52. Locking rod; 53. Protruding rod. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying 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 the embodiments of the present invention.

[0030] 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 one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the embodiments of the present utility model, 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 connection; it can be a mechanical connection, an electrical connection, or a communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0032] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a carbon brush type generator of the utility model in conjunction with the accompanying drawings.

[0034] like Figure 1-Figure 3 As shown, a carbon brush type generator of the utility model comprises a brush box 1 with a hollow structure inside, and a carbon brush 2 inserted inside the brush box 1 for contacting the surface of the generator slip ring, and a partition 11 is used to separate an area for inserting and installing the carbon brush 2 inside the brush box 1. A coil spring 31 for elastic constant pressure carbon brush 2 is provided on the top of the carbon brush 2, so that the free end of the carbon brush 2 can contact the generator slip ring through the elastic force of the coil spring 31.

[0035] The free end of the coil spring 31 is fixedly installed by the plug-in strip 3 provided inside the brush box 1. The free end of the coil spring 31 is located at the bottom of the plug-in strip 3, so when the carbon brush 2 is plugged into the brush box 1, the coil spring 31 can be unwound from bottom to top to provide corresponding elastic force to press the carbon brush 2 downward.

[0036] In order to extend the replacement frequency of the carbon brush 2, the length of the carbon brush 2 is preferably 100 mm. At the same time, the top of the carbon brush 2 extends to the conductive part of the surface of the brush box 1 and is connected through the wire 21.

[0037] like Figure 2-Figure 4 As shown, a base 13 is extended from the back of the brush box 1 to one side, and a rotation hole 14 is provided through the top of the base 13. A rotatable shaft 51 is coaxially provided inside the rotation hole 14 to perform corresponding rotation adjustment. The rotation of the shaft 51 is rotated by holding and rotating the insulating handle 5 fixed on the top of the shaft 51. Therefore, when the shaft 51 needs to be rotated, the operator can rotate it to a corresponding angle by holding the insulating handle 5.

[0038] At the same time, a locking rod 52 that can be locked and limited is horizontally arranged on the outer circumference of the rotating shaft 51 located at the lower part of the base 13. When the brush box 1 is installed at the corresponding generator slip ring, the locking rod 52 provided on the outer circumference of the rotating shaft 51 is locked with the corresponding component to achieve a fixed installation effect. Therefore, the brush box 1 can be installed and detached as the insulating handle 5 is rotated.

[0039] like Figure 2-Figure 7 As shown, the back of the brush box 1 corresponding to the surface of the carbon brush 2 is provided with a tightening hole 12. At the same time, there are supports 16 horizontally opposite to each other at the back of the brush box 1, and a rotating rod 48 with the rotating rod 48 as the axis is coaxially arranged between the two sets of supports 16, and the pressure plate 4 provided on one side of the rotating rod 48 can rotate with the rotating rod 48 as the axis;

[0040] At the same time, a pressure block 43 having one end pressed against the surface of the carbon brush 2 is provided on the surface of the pressure plate 4 opposite to the pressing hole 12, and a spring 47 is provided above the pressure block 43 on the same side surface of the pressure plate 4. Therefore, when the carbon brush 2 is not working, the elastic force of the spring 47 pushes back, so that the pressure plate 4 can rotate around the rotating rod 48 as the axis, so that one end of the pressure block 43 presses against the outer surface of the carbon brush 2 to prevent the carbon brush 2 from being ejected under the action of the coil spring 31 when the carbon brush 2 is not working.

[0041] A protrusion 46 is provided on the surface of the pressing plate 4 and extends toward one side of the base 13 . The protrusion 46 is located at the upper portion of the pressing plate 4 .

[0042] At the same time, the outer peripheral surface of the rotating shaft 51 also includes a convex rod 53 that can press against and push the convex block 46. The convex rod 53 and the convex block 46 are located in the same horizontal plane, so that when the rotating shaft 51 rotates, the convex rod 53 can push the convex block 46 to retract to the side of the spring 47, and then the vertical pressure plate 4 can rotate, and one end of the pressure block 43 can be separated from the outer surface of the carbon brush 2. Under the action of the constant pressure of the coil spring 31, the carbon brush 2 maintains a stable contact with the slip ring. The inner part of the base 13 is provided with a convex rod groove 17 for the convex rod 53 to rotate along its path, so that one end of the convex rod 53 can push the convex block 46 back.

[0043] like Figure 4 and Figure 7 As shown, a wire hole 15 is provided downwardly through one side of the upper end of the base 13, and an air guide tube 41 is provided inside the wire hole 15 for guiding the flow of gas, and the end of the air guide tube 41 is connected to the upper end of the pressing plate 4. At the same time, a docking head 42 that can be connected to a corresponding air pump is provided at the top of the air guide tube 41, and the air pump can be connected through the docking head 42, so that the gas generated by the air pump can enter the air guide tube 41.

[0044] The pressure plate 4 is provided with an air passage 45 communicating with the air guide tube 41, and an exhaust hole 44 for exhausting gas is provided at the end of the pressure block 43 and penetrates through the air passage 45. Therefore, after the brush box 1 is installed, the insulating handle 5 can be rotated to lock it, and as the rotating shaft 51 rotates, the protrusion 46 can be pushed back by the protrusion rod 53, and then the exhaust hole 44 provided at the end of the pressure block 43 can be aligned with the carbon brush 2. Therefore, after the carbon brush 2 is used for a long time, its air pump is connected to the docking head 42, and its high-pressure gas can be discharged from the exhaust hole 44 through the corresponding air passage 45 to achieve the effect of removing carbon powder.

[0045] A working principle of a carbon brush type generator: when the carbon brush 2 is not working, the elastic force of the spring 47 pushes back, so that the pressure plate 4 can rotate with the rotating rod 48 as the axis, so that one end of the pressure block 43 is pressed against the outer surface of the carbon brush 2 to prevent the carbon brush 2 from being ejected under the action of the coil spring 31 when the carbon brush 2 is not working. After the brush box 1 is installed, the insulating handle 5 can be rotated to lock it. As the rotating shaft 51 rotates, the protrusion 46 can be pushed back by the protrusion 53, and then the exhaust hole 44 opened at the end of the pressure block 43 can be aligned with the carbon brush 2. Therefore, after the carbon brush 2 is used for a long time, its air pump is connected to the docking joint 42, and its high-pressure gas can be discharged from the exhaust hole 44 through the corresponding air duct 45 to achieve the effect of removing carbon powder.

[0046] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A carbon brush type generator, comprising a brush box (1) with a hollow structure inside, and a carbon brush (2) inserted inside the brush box (1) and used to abut against the surface of the generator slip ring, characterized in that: A reversible pressure plate (4) is arranged opposite to the back of the brush box (1), and a spring (47) capable of rebounding and compressing is arranged between the upper surface of the pressure plate (4) and the back of the brush box (1), and a pressure block (43) with one end extending into the interior of the brush box (1) is arranged at the lower surface of the pressure plate (4) on the same side as the spring (47), so that the carbon brush (2) can be pressed against expansion and contraction by means of the pressure block (43).

2. The carbon brush type generator according to claim 1, characterized in that: A tightening hole (12) is provided inside the back of the brush box (1) corresponding to the surface of the carbon brush (2), and one end of the pressing block (43) extends into the inside of the tightening hole (12).

3. The carbon brush type generator according to claim 2, characterized in that: The back of the brush box (1) is horizontally opposed to a support (16), and the rotation of the pressing plate (4) is achieved by a rotating rod (48) provided on one side of the pressing plate passing through the support (16) as an axis, so that the pressing plate (4) can rotate.

4. The carbon brush type generator according to claim 3, characterized in that: A base (13) is provided on the back of the brush box (1) extending to one side, and a rotating hole (14) is provided through the top of the base (13), and a rotatable rotating shaft (51) is coaxially provided inside the rotating hole (14).

5. The carbon brush type generator according to claim 4, characterized in that: The rotation of the rotating shaft (51) is achieved by holding and rotating the rotating shaft (5) fixedly provided on the top thereof.

6. The carbon brush type generator according to claim 5, characterized in that: A protrusion (46) is provided on the surface of the pressing plate (4) extending toward one side of the base (13), and the protrusion (46) is located on the upper part of the pressing plate (4).

7. The carbon brush type generator according to claim 6, characterized in that: The outer peripheral surface of the rotating shaft (51) also includes a convex rod (53) that can press against and push the convex block (46). The convex rod (53) and the convex block (46) are located on the same horizontal plane. A convex rod groove (17) is provided inside the base (13) for allowing the convex rod (53) to rotate along its path.

8. The carbon brush type generator according to claim 7, characterized in that: A wire hole (15) is provided on one side of the upper end of the base (13) and extends downward therethrough. An air guide tube (41) is provided inside the wire hole (15) for guiding the flow of gas. The end of the air guide tube (41) is connected to the upper end of the pressing plate (4). A docking joint (42) is provided at the top of the air guide tube (41) for connecting to a corresponding air pump.

9. The carbon brush type generator according to claim 8, characterized in that: The pressure plate (4) is provided with an air passage (45) in communication with the air guide tube (41), and an exhaust hole (44) for exhausting gas is provided at the end of the pressure block (43) and extends through the air passage (45).

10. The carbon brush type generator according to claim 1, characterized in that: The length of the carbon brush (2) is 100 mm.

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