Steady connection type carbon brush holder

Abstract

The utility model discloses a stable connection type carbon brush holder, which comprises an annular plate, and is characterized in that four carbon brush box mounting grooves which are uniformly arranged and two inductor mounting grooves which are oppositely arranged are formed in the annular plate, and positive and negative electrode connecting sheets are embedded in the annular plate; a carbon brush terminal and an inductor terminal are respectively arranged on the positive and negative electrode connecting sheets, hollows are arranged on the annular plate corresponding to the carbon brush terminal and the inductor terminal, a riveting sheet integrally formed with the inductor terminal is arranged on the inductor terminal, and the two inductors are respectively connected in parallel on the positive and negative electrode connecting sheets. The two ends of the inductor are riveted to the inductor terminals through the corresponding riveting sheets and then are connected in a spot welding mode, and the brush braids of the four carbon brushes are connected with the corresponding carbon brush terminals in a spot welding mode respectively. Riveting and spot welding dual connection is adopted for the inductor wiring end, and the stability of inductor connection is improved.

Description

Technical Field

[0001] The utility model relates to an improved invention of a carbon brush holder, in particular to an improved invention of a firmly connected carbon brush holder. Background Art

[0002] In the prior art, a carbon brush and an inductor are provided on a carbon brush holder. The carbon brush braids are connected to the carbon brush terminals of the positive and negative electrode connecting plates by spot welding, and the two ends of the inductor are respectively connected in parallel to the inductor terminals of the positive and negative electrode connecting plates by spot welding. Since the brush braids are highly flexible, they can be firmly connected to the carbon brush terminals by spot welding and are not easy to fall off. The two ends of the inductor are usually copper wires with a certain hardness. They are easily fallen off when connected to the inductor terminals by spot welding, which increases the scrap rate. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a firmly connected carbon brush holder.

[0004] In order to solve the above technical problems, the utility model is implemented by adopting the following technical scheme: the stable connection type carbon brush holder includes an annular plate, characterized in that: the annular plate is provided with four evenly arranged carbon brush box mounting grooves and two relatively arranged inductor mounting grooves, the annular plate is embedded with positive and negative electrode connecting plates, and the positive and negative electrode connecting plates are respectively provided with carbon brush terminal and inductor terminal, the annular plates corresponding to the carbon brush terminal and the inductor terminal are provided with hollowing, the inductor terminal is provided with a rivet sheet integrally formed therewith, the two inductors are respectively connected in parallel to the positive and negative electrode connecting plates, the two ends of the inductor are riveted to the inductor terminal by the corresponding rivet sheet, and then spot welded together, the brush braids of the four carbon brushes are respectively welded to the corresponding carbon brush terminal ends.

[0005] A radial extension portion is provided on the annular plate corresponding to the carbon brush box installation groove, and the radial extension portion cooperates with the outer end support of the carbon brush box.

[0006] The carbon brush box installation groove is provided with radially distributed inner and outer installation holes, and the inner and outer installation holes are installed and matched with the inner and outer legs of the carbon brush box.

[0007] The upper surface of the annular plate close to the central hole is provided with four reinforcing ribs which are equally spaced in the circumferential direction, and the reinforcing ribs are respectively located between two adjacent carbon brush box installation grooves.

[0008] The upper part of the riveting sheet is a curved surface or a V-shaped surface, and the lower part of the riveting sheet has a smaller width than the upper part.

[0009] The beneficial effect of the utility model is that the improved firmly connected carbon brush holder is provided with a rivet pressing sheet integrally formed therewith on the inductor terminal, so that the inductor terminal is double-connected by riveting and spot welding, thereby improving the stability of the inductor connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a rear view of the structure of the utility model. DETAILED DESCRIPTION

[0013] The attached drawings show the structure of the utility model, and the relevant details are further described below in conjunction with the attached drawings. In this embodiment, the firmly connected carbon brush holder includes an annular plate 1, on which four carbon brush box mounting grooves 2 are evenly arranged and two inductor mounting grooves 3 are arranged oppositely. A positive and negative electrode connecting piece 4 is embedded in the annular plate 1, and the positive and negative electrode connecting piece 4 is respectively provided with a carbon brush terminal 5 and an inductor terminal 6. The annular plate 1 corresponding to the carbon brush terminal 5 and the inductor terminal 6 is hollowed out, and the inductor terminal 6 is provided with a riveted sheet 7 integrally formed therewith. Two inductors are respectively connected in parallel to the positive and negative electrode connecting piece 4, and the two ends of the inductor are riveted to the inductor terminal 6 by the corresponding riveted sheet 7, and then spot welded to each other. The double connection improves the stability of the inductor connection and avoids falling off and disconnection due to spot welding alone. The brush braids of the four carbon brushes are respectively spot welded to the corresponding carbon brush terminal 5.

[0014] As a specific implementation of further improvement, a radial extension portion 8 is provided on the annular plate 1 corresponding to the carbon brush box installation groove 2, and the radial extension portion 8 cooperates with the outer end support of the carbon brush box to meet the installation of a larger size carbon brush box without increasing the overall size of the annular plate 1.

[0015] As a specific implementation of further improvement, radially distributed inner and outer mounting holes 9 are provided in the carbon brush box mounting groove 2, and the inner and outer mounting holes are installed and matched with the inner and outer legs of the carbon brush box. During installation, the inner and outer legs of the carbon brush box are respectively inserted into the inner and outer mounting holes and bent toward each other for positioning.

[0016] As a specific implementation of further improvement, four reinforcing ribs 10 equidistantly distributed in the circumferential direction are provided on the upper surface of the annular plate 1 close to the center hole. The reinforcing ribs 10 are respectively located between two adjacent carbon brush box mounting grooves 2 to enhance the structural strength of the annular plate 1 .

[0017] As a specific implementation of further improvement, the upper part of the riveting sheet 7 is an arc surface or a V-shaped surface, which is adapted to the shape of the copper wire, so as to facilitate matching and clamping the copper wires at both ends of the inductor, and the lower width of the riveting sheet 7 is smaller than the upper width, so as to facilitate bending of the riveting sheet 7 for riveting.

[0018] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A firmly connected carbon brush holder, comprising an annular plate, characterized in that: The annular plate is provided with four evenly arranged carbon brush box mounting grooves and two oppositely arranged inductor mounting grooves, the annular plate is embedded with positive and negative electrode connecting plates, and the positive and negative electrode connecting plates are respectively provided with carbon brush terminals and inductor terminals, the annular plates corresponding to the carbon brush terminals and the inductor terminals are hollowed out, the inductor terminals are provided with riveted sheets integrally formed therewith, the two inductors are respectively connected in parallel to the positive and negative electrode connecting plates, the two ends of the inductors are riveted to the inductor terminals by the corresponding riveted sheets, and then are connected by spot welding, and the brush braids of the four carbon brushes are respectively welded to the corresponding carbon brush terminal ends.

2. The firmly connected carbon brush holder according to claim 1, characterized in that: A radial extension portion is provided on the annular plate corresponding to the carbon brush box installation groove, and the radial extension portion cooperates with the outer end support of the carbon brush box.

3. The firmly connected carbon brush holder according to claim 1 or 2, characterized in that: The carbon brush box installation groove is provided with radially distributed inner and outer installation holes, and the inner and outer installation holes are installed and matched with the inner and outer legs of the carbon brush box.

4. The firmly connected carbon brush holder according to claim 1, characterized in that: The upper surface of the annular plate close to the central hole is provided with four reinforcing ribs which are equally spaced in the circumferential direction, and the reinforcing ribs are respectively located between two adjacent carbon brush box installation grooves.

5. The firmly connected carbon brush holder according to claim 1, characterized in that: The upper part of the riveting sheet is a curved surface or a V-shaped surface, and the lower part of the riveting sheet has a smaller width than the upper part.

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