Electric brush constant voltage device

Abstract

The utility model discloses an electric brush constant voltage device which comprises a shell, a spring and a carbon brush, the shell is of a rectangular cylindrical structure, notches are formed in the two corresponding sides of one end of the shell, placing plates extending outwards are arranged at the notches, and the spring comprises a connecting piece and a constant force spring. The two constant-force springs are located at the two ends of the connecting piece respectively and connected with the connecting piece into an integrated structure, the two constant-force springs are placed on the placing plate, a lead is arranged at one end of the carbon brush, and the lead end of the carbon brush extends into the shell after being placed into the notch end from the shell to abut against the connecting part. Through matching of the shell, the spring and the carbon brush, relatively constant pressure is applied to the carbon brush by the spring, so that the connection stability of the carbon brush and the commutator is improved, and the problem of low product stability is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor production technical field, especially a kind of electric brush constant voltage device. BACKGROUND

[0002] Carbon brush in motor wants to keep stable connection with commutator, prior art adopts scroll spring to press carbon brush on commutator, but due to the length of carbon brush shortening after wearing, the elastic force provided to carbon brush by scroll spring changes in use process, finally lead to the connection stability of carbon brush and commutator reduces, affect the stability of product. SUMMARY

[0003] To solve the above technical problem, the utility model provides a kind of electric brush constant voltage device, by the matching between shell, spring and carbon brush, realize that spring exerts relatively constant pressure to carbon brush, make the connection stability of carbon brush and commutator improve, solve the problem of low product stability.

[0004] To solve the above technical problem, the utility model provides a kind of technical scheme: a kind of electric brush constant voltage device, including shell, spring and carbon brush, its characterized in that: the shell rectangular cylinder structure, and one end corresponding two sides are provided with notch, the notch is provided with the placement board that extends outward, the spring includes by connecting sheet and constant force spring, two constant force springs are respectively at the two ends of the connecting sheet and is connected as one structure, two constant force springs are placed on the placement board, the carbon brush one end is provided with lead, the lead end of the carbon brush is placed by the shell and is inserted into the connection part after the notch end and stretches to the inside of shell.

[0005] Further, the side wall of the shell is provided with strip hole, the top of the strip hole is higher than the plane formed by the placement board, the lead passes through strip hole and is connected with the carbon brush by connecting screw.

[0006] Further, the placement board is provided with arc-shaped slot matched with the constant force spring.

[0007] The utility model has the advantages that:

[0008] 1, the matching between shell, spring and carbon brush of the application, realize that spring exerts relatively constant pressure to carbon brush, make the connection stability of carbon brush and commutator improve, solve the problem of low product stability.

[0009] 2, the lead of the application passes through strip hole and is connected with the carbon brush by connecting screw, forms limit by screw and strip hole cooperation, prevent carbon brush from accidentally jumping off and falling, lead can be repeatedly used when carbon brush wears to a certain degree and needs to be replaced, and the lead is detachably connected with the carbon brush by the screw.

[0010] 3. The arc-shaped slot matched with the constant force spring is arranged on the placement plate, the placement plate supports the constant force spring, the arc-shaped slot is matched with the notch to limit the movement, and the elastic deformation of the constant force spring is facilitated when the connecting piece is driven by the carbon brush to move.

[0011] In order to make the above and other objects, features and advantages of the present application more apparent, the following preferred embodiments are described in detail, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only two of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0013] Fig. 1 It is a structural schematic view of the present application.

[0014] Fig. 2 It is an assembly view of the present application.

[0015] In the figure, 1 is a shell, 2 is a carbon brush, 3 is a notch, 4 is a placement plate, 5 is a connecting piece, 6 is a constant force spring, 7 is a strip-shaped hole, 8 is a lead wire, 9 is a screw, and 10 is an arc-shaped slot. DETAILED DESCRIPTION

[0016] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to make the present application more thorough and complete. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes, and are not used to limit the protection scope of the present application.

[0017] It should be understood that each step described in the method embodiment of the present application can be executed in different order. In addition, the method embodiment can include additional steps or omit the steps shown. The scope of the present application is not limited in this respect.

[0018] The names of the messages or information exchanged between the plurality of devices in the embodiment of the present application are only for illustrative purposes, and are not used to limit the scope of the messages or information. Embodiment one

[0019] As Figs. 1-2As shown, a constant voltage brush device includes a housing 1, springs, and carbon brushes 2. The housing 1 has a rectangular cylindrical structure with notches 3 on both sides of one end. A placement plate 4 extends outward at the notches 3. The springs include a connecting piece 5 and two constant force springs 6. The two constant force springs 6 are located at both ends of the connecting piece 5 and are connected to it as an integral structure. The two constant force springs 6 are placed on the placement plate 4. One end of the carbon brush 2 is provided with a lead wire 8. The lead wire 8 of the carbon brush 2 is inserted into the notch 3 of the housing 1, abuts against the connecting piece 5, and extends into the housing 1. The ends of the two constant force springs 6 are connected as an integral structure through the connecting piece 5. When the constant force springs 6 are placed on the placement plate 4, the connecting piece 5 passes through the two notches 3. When the carbon brush 2 abuts against the connecting piece 5 and extends into the housing 1, the two constant force springs 6 provide a relatively constant elastic force to the carbon brush 2, thereby improving the connection stability between the carbon brush 2 and the commutator and solving the problem of low product stability.

[0020] The placement plate 4 and the housing 1 can be an integral structure. Specifically, the housing 1 is cut at the end by laser, and then the cut part is bent outward to form the placement plate 4, and a notch 3 is formed at the end of the housing 1. Example 2

[0021] like Figs. 1-2 As shown, this embodiment is obtained by adding technical features such as the strip hole 7 on the basis of embodiment one. The other technical features are the same as those in embodiment one. The similarities will not be repeated here. The difference between this embodiment and embodiment one is that the side wall of the housing 1 is provided with a strip hole 7. The top of the strip hole 7 is higher than the plane formed by the placement plate 4. The lead wire 8 passes through the strip hole 7 and is connected to the carbon brush 2 through the connecting screw 9.

[0022] In this embodiment, the lead wire 8 passes through the strip hole 7 and is connected to the carbon brush 2 through the connecting screw 9. The screw 9 and the strip hole 7 cooperate to form a limit, preventing the carbon brush 2 from accidentally popping out and falling off, and the spring from falling off. The lead wire 8 is detachably connected to the carbon brush 2 through the screw 9. When the carbon brush 2 is worn to a certain extent and needs to be replaced, the lead wire 8 can be reused. Example 3

[0023] like Figs. 1-2 As shown, this embodiment is obtained by adding technical features such as the arc groove 10 on the basis of embodiment one. The other technical features are the same as those in embodiment one. The similarities will not be repeated here. The difference between this embodiment and embodiment one is that the placement plate 4 is provided with an arc groove 10 that cooperates with the constant force spring 6.

[0024] In the embodiment, the placing plate 4 is provided with an arc-shaped slot 10 matched with the constant force spring 6, the placing plate 4 supports the constant force spring 6, the arc-shaped slot 10 is matched with the notch 3 to limit the constant force spring 6, and when the connecting plate 5 is moved by the carbon brush 2, the constant force spring 6 is elastically deformed.

[0025] The use process of the technical scheme formed by the above embodiment is that when the carbon brush 2 moves to the inside of the shell 1 to move the connecting plate 5, the two constant force springs 6 are deformed and store force, a pushing force pushing the carbon brush 2 out of the shell 1 is generated, and the carbon brush 2 is stably pressed on the commutator.

[0026] Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A brush constant voltage device, comprising a housing, a spring, and a carbon brush, characterized in that: The housing has a rectangular cylindrical structure with notches on both sides corresponding to one end. An outwardly extending placement plate is provided at the notch. The spring includes a connecting piece and a constant force spring. The two constant force springs are located at both ends of the connecting piece and are connected to it as an integral structure. The two constant force springs are placed on the placement plate. One end of the carbon brush is provided with a lead wire. The lead wire end of the carbon brush extends into the housing through the notch end, abuts against the connecting part, and extends into the housing. The side wall of the housing is provided with a strip-shaped hole, the top of which is higher than the plane formed by the placement plate. The lead wire passes through the strip-shaped hole and is connected to the carbon brush by a connecting screw.

2. The brush constant voltage device according to claim 1, characterized in that: The placement plate is provided with an arc-shaped groove that cooperates with the constant force spring.

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