A flat conductive slip ring

Abstract

The present invention provides a flat conductive slip ring, which relates to the technical field of connectors, has a compact structure and a small volume, and in particular, has a small axial dimension and a thin thickness, and can be installed in a small spacing space, thereby increasing the scope of application. It includes a stator shell and a rotor shell; a plurality of annular plastic parts are arranged concentrically in the radial direction on the stator shell, and a mounting groove is provided on the side circumference of the annular plastic part, and an annular copper sheet is arranged in the mounting groove, and the annular copper sheet is electrically connected to a first external wire; a mounting plate is fixedly arranged on the rotor shell, and a plurality of brush wire mounting frames are fixedly arranged at intervals along the extension direction of the mounting plate, and a brush wire is arranged on each brush wire mounting frame, and each brush wire is electrically connected to a second external wire; the stator shell and the rotor shell are buckled in the axial direction and can rotate relatively; the electrical connection parts on the plurality of brush wires are extended into the plurality of mounting grooves one by one to contact the side circumference of the corresponding annular copper sheet to realize electrical connection.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, and in particular to a flat conductive slip ring. Background Art

[0002] Conductive slip rings are also called collector rings, slip rings, collector rings, and collector rings. They are mainly used in electromechanical systems that require continuous rotation while transmitting power and signals from a fixed position to a rotating position. Conductive slip rings can improve system performance, simplify system structure, and prevent wires from being twisted during rotation. The material of the conductive slip ring requires high mechanical strength and is an excellent conductor of electricity. It must also be corrosion-resistant. When in sliding contact with the brush, it must have wear resistance and stable sliding contact characteristics. Generally, steel conductive slip rings have the advantages of good wear resistance and high mechanical strength. The conductive slip rings in the prior art are large in size and require a large space for installation, which limits their scope of use. Summary of the invention

[0003] The invention provides a flat conductive slip ring, which has a compact structure, especially a small axial dimension and a thin thickness, and can be installed in a small spacing space, thereby increasing the scope of application.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] The present invention provides a flat conductive slip ring, comprising a stator shell and a rotor shell; a plurality of annular plastic parts are arranged concentrically at intervals in the radial direction on the stator shell, a mounting groove is provided on the side circumference of each annular plastic part, an annular copper sheet is arranged in each mounting groove, and the annular copper sheet is electrically connected to a first external electric wire; a mounting plate extending in the radial direction is fixedly arranged on the rotor shell, a plurality of brush wire mounting frames are fixedly arranged at intervals in the extending direction of the mounting plate, a brush wire is arranged on each brush wire mounting frame, and each brush wire is electrically connected to a second external electric wire; the stator shell and the rotor shell are buckled in the axial direction and can rotate relatively; the electrical connection parts on the plurality of brush wires are respectively and one by one extended into the plurality of mounting grooves to contact the side circumference of the corresponding annular copper sheet to realize electrical connection.

[0006] The flat conductive slip ring provided by the present invention includes a stator shell, a rotor shell, a brush wire, and an annular copper sheet. The brush wire is fixedly mounted on the rotor shell through a mounting plate so that the brush wire and the rotor shell form a moving whole; the annular copper sheet is fixedly mounted on the stator shell through a ring plastic so that the annular copper sheet and the stator shell form a moving whole. Since the stator shell and the rotor shell are axially buckled and can rotate relative to each other, the brush wire and the annular copper sheet can rotate relative to each other with the relative rotation of the rotor shell and the stator shell. Since the brush wire sheet is in electrical contact with the annular copper sheet, the brush wire and the annular copper sheet can be in electrical contact while rotating relative to each other. Based on this, the flat conductive slip ring provided by the present invention has a compact structure and a small size, especially a small axial size and a thin thickness, which can adapt to installation in a small spacing space, thereby improving the scope of application.

[0007] In some embodiments, a first plug-in column is provided on the stator shell, and a first plug-in hole is provided on each of the ring-molded parts. Each of the ring-molded parts is inserted into the corresponding first plug-in hole through the first plug-in column to be fixedly mounted on the stator shell.

[0008] In some embodiments, a plurality of fixing seats are sequentially arranged on the mounting plate along its extension direction, a second plug-in column is arranged on the plurality of fixing seats, a second plug-in hole is arranged at the bottom of a plurality of brush mounting frames, and a plurality of brush mounting frames are fixedly installed on the plurality of fixing seats one by one by inserting the second plug-in column into the second plug-in hole.

[0009] In some embodiments, the middle part of the brush wire is fixedly connected to the brush wire mounting frame, and its two ends are arranged as elastic arms arranged in an eight-shaped shape. The ends of the elastic arms extend into the mounting groove as power connection parts and overlap the side circumference of the annular copper sheet.

[0010] In some embodiments, three annular plastic parts are fixedly arranged in sequence radially inward on the stator shell, namely a large annular plastic part, a medium annular plastic part and a small annular plastic part; a large annular copper sheet, a medium annular copper sheet and a small annular copper sheet are respectively arranged on the large annular plastic part, the medium annular plastic part and the small annular plastic part; a plurality of brush wires are fixedly arranged radially on the rotor shell, namely a first brush wire, a second brush wire and a third brush wire, and the first brush wire, the second brush wire and the third brush wire are respectively in contact with the side circumferential surfaces of the large annular copper sheet, the medium annular copper sheet and the small annular copper sheet in a one-to-one correspondence.

[0011] In some embodiments, a central through hole is provided in the center of the stator shell and the rotor shell, and the stator shell and the rotor shell are connected together by screws and a central axis passing through the central through holes of the two. An inner bearing is provided outside the central axis so that the rotor shell can rotate around the central axis.

[0012] In some embodiments, a stator case outer wall and a stator case inner wall are sequentially arranged on the stator case radially inward, and an annular groove is formed between the stator case outer wall and the stator case inner wall. When the stator case and the rotor case are buckled together, the rotor case side wall is limited in the annular groove.

[0013] In some embodiments, an outer bearing is provided between the outer periphery of the stator shell and the outer periphery of the rotor shell, the outer ring of the outer bearing is fixedly connected to the side wall of the rotor shell, and the inner ring of the outer bearing is fixedly connected to the stator shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the flat conductive slip ring in the present invention;

[0016] Figure 2 It is a schematic diagram of the split structure of the flat conductive slip ring in the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the annular plastic part and the annular copper sheet of the flat conductive slip ring in the present invention;

[0018] Figure 4 It is a schematic diagram of the split structure of the flat conductive slip ring in the present invention;

[0019] Figure 5 It is a schematic diagram of the split structure of the flat conductive slip ring in the present invention;

[0020] Figure 6 It is a schematic diagram of the stator shell structure of the flat conductive slip ring in the present invention;

[0021] Figure 7 It is a schematic structural diagram of the mounting plate, mounting frame and brush wire of the flat conductive slip ring in the present invention;

[0022] Figure 8 It is a schematic diagram of the external structure of the rotor shell of another flat conductive slip ring in the present invention;

[0023] Fig. 9 for Figure 8 Schematic diagram of the internal structure of the middle rotor housing;

[0024] Fig.10 for Figure 8 A schematic diagram of the structure of the middle brush wire mounting frame, brush wire, mounting plate and limiter when they are matched;

[0025] Fig.11 for Fig.10 Schematic diagram of the structure when the components shown in are installed on the rotor shell.

[0026] Reference numerals: flat conductive slip ring 100, stator housing 1, rotor housing 2, ring plastic part 11, mounting groove 111, annular copper sheet 12, first external wire 3, limiting slide groove 20, mounting plate 21, brush wire mounting frame 22, second plug hole 221, brush wire 23, strip slide hole 24, strip slide groove 25, positioning card slot 251, supporting plane 26, limiting part 27, elastic card table 271, positioning rod 28, second external wire 4, first plug column 13, first plug-in hole 112, fixing seat 211, second plug-in column 2111, large ring plastic part 11a, middle ring plastic part 11b, small ring plastic part 11c, large ring copper sheet 12a, middle ring copper sheet 12b, small ring copper sheet 12c, first brush 23a, second brush 23b, third brush 23c, screw 5, center axis 6, inner bearing 7, outer wall 14 of stator shell, inner wall 15 of stator shell, annular groove C, lead 16, outer bearing 8. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; 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.

[0029] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0030] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] like Figure 1-5 As shown, the present invention provides a flat conductive slip ring 100, comprising a stator shell 1 and a rotor shell 2. A plurality of annular plastic parts 11 are arranged concentrically at intervals along the radial direction on the stator shell 1, and a mounting groove 111 is provided on the side circumference of each annular plastic part 11, and an annular copper sheet 12 is correspondingly arranged in each mounting groove 111, and the annular copper sheet 12 is electrically connected to the first external wire 3; a mounting plate 21 extending along the radial direction thereof is fixedly arranged on the rotor shell 2, and a plurality of brush wire mounting frames 22 are fixedly arranged at intervals along the extension direction thereof on the mounting plate 21, and a brush wire 23 is correspondingly arranged on each brush wire mounting frame 22, and each brush wire 23 is electrically connected to the second external wire 4; the stator shell 1 and the rotor shell 2 are buckled in the axial direction and can rotate relative to each other; the electrical connection parts on the plurality of brush wires 23 are respectively and one by one extended into the plurality of mounting grooves 111 and contact the side circumference of the corresponding annular copper sheet 12 to realize electrical connection.

[0032] In order to ensure reliable contact between the brush wire 23 and the annular copper sheet 12, the brush wire in this embodiment can be a brush wire sheet structure made of a conductive sheet, or a brush wire row structure in which a plurality of conductive wires are arranged in a row.

[0033] like Figure 1-5As shown, the flat conductive slip ring 100 provided by the present invention comprises a stator shell 1, a rotor shell 2, a brush 23, and an annular copper sheet 12. The brush 23 is fixedly mounted on the rotor shell 2 through a mounting plate 21 so that the brush 23 and the rotor shell 2 form a moving whole; the annular copper sheet 12 is fixedly mounted on the stator shell 1 through a ring plastic 11 so that the annular copper sheet 12 and the stator shell 1 form a moving whole. Since the stator shell 1 and the rotor shell 2 are axially buckled and can rotate relative to each other, the brush 23 and the annular copper sheet 12 can rotate relative to each other with the relative rotation of the rotor shell 2 and the stator shell 1. Since the brush 23 is in electrical contact with the annular copper sheet 12, the brush 23 and the annular copper sheet 12 can be in electrical contact while rotating relative to each other. Based on this, the flat conductive slip ring provided by the present invention has a compact structure and a small volume, especially a small axial size and a thin thickness, and can be installed in a small spacing space, and has a small requirement for the installation space, thereby improving the scope of application.

[0034] It should be noted that the flat conductive slip ring provided by the present invention does not limit which of the two side surfaces of the annular copper sheet 12 the brush filament 23 contacts. That is, the brush filament 23 can contact the outer circumference of the annular copper sheet 12 or the inner circumference of the annular copper sheet 12. The flat conductive slip ring 100 provided by the present invention is only described by taking the contact of the brush filament 23 with the outer circumference of the annular copper sheet 12 as an example. The embodiment in which the brush filament 23 contacts the inner circumference of the annular copper sheet 12 can be understood by referring to the embodiment in which the brush filament 23 contacts the outer circumference of the annular copper sheet 12. This specification will not go into details.

[0035] In some embodiments, Figure 5 and 6 As shown, a first plug-in column 13 is provided on the stator shell 1, and a first plug-in hole 112 is provided on each of the annular plastic parts 11. Each of the annular plastic parts 11 is inserted into the corresponding first plug-in hole 112 through the first plug-in column 13 to be fixedly installed on the stator shell 1, and the first plug-in column 13 and the first plug-in hole 112 are interference fit; in this way, when assembling the annular plastic parts 11 and the stator shell 1, it is only necessary to plug each of the annular plastic parts 11 into the corresponding first plug-in column 13, and the installation method is simple, convenient and fast, which is conducive to improving the assembly efficiency of the flat conductive slip ring 100; in actual operation, screws can be used to strengthen the fixation of the annular plastic parts 11 and the stator shell 1.

[0036] In some embodiments, Figure 7As shown, the mounting plate 21 is provided with a plurality of fixing seats 211 in sequence along its extension direction, a plurality of the fixing seats 211 are provided with second plug-in posts 2111, a plurality of the brush wire mounting frames 22 are provided with second plug-in holes 221 at the bottom, a plurality of the brush wire mounting frames 22 are inserted into the second plug-in holes 221 through the second plug-in posts 2111 and fixedly mounted on the plurality of fixing seats 211 one by one, and the second plug-in posts 211 and the second plug-in holes 221 are interference fit. In this way, when assembling the brush wire mounting frames 22 and the mounting plate 21, it is only necessary to plug each brush wire mounting frame 22 into the corresponding second plug-in posts 2111. The installation method is simple, convenient and fast, which is conducive to improving the assembly efficiency of the flat conductive slip ring 100; in actual operation, screws can be used to strengthen the fixation of the ring plastic 11 and the stator shell 1.

[0037] In some embodiments, Figure 7 As shown, the middle part of the brush wire 23 is fixedly connected to the brush wire mounting frame 22 (for example, the middle part of the brush wire 23 is connected to the brush wire mounting frame 22 by injection molding or the middle part of the brush wire 23 is pressed on the brush wire mounting frame 22 by a buckle), and its two ends are set as elastic arms arranged in an eight-shaped shape, and the ends of the elastic arms are extended into the mounting groove as the power connection part and overlap the side surface of the annular copper sheet 12, so that the brush wire 23 and the annular copper sheet 12 can rotate relatively more smoothly without any blocking feeling and can maintain good contact. The middle part of the brush wire 23 is spot-welded with the end of the second external wire 4 to achieve electrical connection.

[0038] In a further embodiment, see Figures 8 to 11As shown, the inner side surface of the rotor shell 2 is provided with a limiting slide groove 20 arranged radially therein, the mounting plate 21 can move radially in the limiting slide groove 20 of the rotor shell 2, and the mounting plate 21 can be locked in the first position and the second position by a locking structure, when the mounting plate 21 is in the first position, when the rotor shell 2 and the stator shell 1 are axially aligned, the brush wire mounting frame 22 and the brush wire 23 can avoid the resistance of the ring plastic 11, and when the mounting plate 21 is in the second position, the power connection part on the brush wire 23 can extend into the ring plastic The locking structure includes a strip sliding hole 24 arranged radially on the rotor shell 2 and a strip sliding groove 25 connected to the upper part of the strip sliding hole 24. The width of the strip sliding groove 25 is greater than the width of the strip sliding hole 24. A support plane 26 is formed at the bottom of the strip sliding groove 25. The support plane 26 is used to support and limit the limit member 27. The limit member 27 can be slidably arranged in the strip sliding groove 25. The mounting plate 21 is provided with a strip sliding hole 24 arranged on the mounting plate 21. 4 extends out and is fixedly connected to the stopper 27, and the side wall of the strip-shaped slide 25 is provided with positioning slots 251 at intervals along the length direction thereof, and the side of the stopper 27 is provided with an elastic clamping platform 271, and the mounting plate 21 can be engaged with the positioning slots 251 at the corresponding position through the elastic clamping platform 271 when the mounting plate 21 is in the first position / second position to achieve locking of the stopper 27 (that is, to achieve locking of the mounting plate 21); the purpose of this structural setting is: due to the direct axial engagement of the stator housing 1 When the stator shell 1 and the rotor shell 2 are aligned, the power connection part of the brush wire will conflict with the annular plastic part 11, thereby causing the brush wire 23 to deform and affect the product quality. The mounting plate 21 is controlled to move to the first position before the stator shell 1 and the rotor shell 2 are aligned, so as to avoid the brush wire 23 from conflicting with the annular plastic part 11. After the stator shell 1 and the rotor shell 2 are axially aligned, the mounting plate 21 is moved to the second position so that the brush wire mounting frame 22 and the brush wire 23 can move radially, and then the power connection part of the brush wire 23 extends into the mounting groove 111 and contacts the annular copper sheet 12, thereby ensuring product performance. The elastic clamping platform 271 can be injection molded as one piece with the limiting member 27, or can be connected by assembly; the positioning rod 28 is nested with the limiting member 27 and clamped or fixed with screws; in order to facilitate the compression of the elastic clamping platform 271 to disengage it from the positioning slot 251, a pressure handle extending from the outer surface of the rotor shell 2 can be provided on the elastic clamping platform 271, and the elastic clamping platform 271 can be disengaged from the positioning slot 251 by applying pressure to the pressure handle, thereby moving the mounting plate 21 to increase the convenience of operation.

[0039] As a specific embodiment provided by the present invention, Figure 2 , Figure 5 and Figure 7As shown, three ring plastic parts 11 are fixedly arranged radially inwardly on the stator shell 1, namely, a large ring plastic part 11a, a middle ring plastic part 11b and a small ring plastic part 11c; a large ring copper sheet 12a, a middle ring copper sheet 12b and a small ring copper sheet 12c are arranged on the large ring plastic part 11a, the middle ring plastic part 11b and the small ring plastic part 11c respectively; a plurality of brush wires 23 are fixedly arranged radially on the rotor shell 2, namely, a first brush wire 23a, a second brush wire 23b and a third brush wire 23c respectively, and the first brush wire 23, the second brush wire 23 and the third brush wire 23 are in contact with the side circumference of the large ring copper sheet 12, the middle ring copper sheet 12 and the small ring copper sheet 12 respectively. The flat conductive slip ring 100 in this embodiment has a compact structure, a small volume, a small requirement for installation space, and a wide range of applications.

[0040] In some embodiments, Figure 5 As shown, the centers of the stator case 1 and the rotor case 2 are both provided with a central through hole, and the stator case 1 and the rotor case 2 are connected together by screws 5 and a central shaft 6 passing through the central through holes of the two. The screws 5 are fixedly connected to the shaft end of the central shaft 6, so as to axially limit the stator case 1 and the rotor case 2. In this way, the rotational connection between the stator case 1 and the rotor case 2 can be realized, that is, the rotational connection between the stator case 1 and the rotor case 2 is realized through the central shaft 6. The implementation methods of the rotational connection between the stator case 1 and the rotor case 2 include but are not limited to this. Furthermore, an inner bearing 7 is provided on the outer sleeve of the central shaft 6 so that the rotor case 2 can rotate around the central shaft 6, so that the rotation of the rotor case 2 is smoother.

[0041] In some embodiments, Figure 5 and Figure 6 As shown, the stator case 1 is provided with a stator case outer wall 14 and a stator case inner wall 15 in sequence in the radial direction inward, and an annular groove C is formed between the stator case outer wall 14 and the stator case inner wall 15. When the stator case 1 and the rotor case 2 are buckled together, the side wall of the rotor case 2 is limited in the annular groove C. In this way, the conductive structures such as the brush filaments 23 and the annular copper sheet 12 can be completely wrapped inside the stator case 1 and the rotor case 2.

[0042] In some embodiments, Figure 5 and Figure 6As shown, an outer bearing 8 is arranged between the outer periphery of the stator shell 1 and the outer periphery of the rotor shell 2, the outer ring of the outer bearing 8 is fixedly connected to the side wall of the rotor shell 2, the inner ring of the outer bearing 8 is fixedly connected to the stator shell 1, and balls are arranged between the outer ring and the inner ring. The stator shell 1 and the rotor shell 2 rotate smoothly relative to each other, which increases the structural stability and ensures the rotation accuracy of the flat conductive slip ring 100.

[0043] In some embodiments, Figure 6 As shown, the lead wire 16 shell of the first external electric wire 3 is welded to the annular copper sheet 12 to achieve electrical connection.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flat conductive slip ring, It is characterized in that including a stator housing and a rotor housing; A plurality of annular plastic parts are arranged concentrically and spaced apart in the radial direction on the stator shell, and a mounting groove is provided on the side circumference of each annular plastic part, and an annular copper sheet is correspondingly arranged in each mounting groove, and the annular copper sheet is electrically connected to the first external wire; A mounting plate extending in the radial direction is fixedly arranged on the rotor shell, and a plurality of brush wire mounting brackets are fixedly arranged at intervals along the extending direction of the rotor shell, each of the brush wire mounting brackets is correspondingly provided with a brush wire, and each of the brush wires is electrically connected to a second external electric wire; The stator shell and the rotor shell are buckled together along the axial direction and can rotate relative to each other; the electrical connection parts on the plurality of brush wires are respectively and one by one extended into the plurality of mounting grooves to contact the side circumference of the corresponding annular copper sheet to realize electrical connection; A radially limited sliding groove is provided on the inner side of the rotor shell, and the mounting plate can move in the radial direction of the rotor shell in the limited sliding groove, and the mounting plate can be locked in the first position and the second position by a locking structure. When the mounting plate is in the first position, the brush mounting frame and the brush wire can avoid the resistance of the annular plastic part when the rotor shell and the stator shell are axially aligned. When the mounting plate is in the second position, the power connection part on the brush wire can extend into the mounting groove of the annular plastic part and contact with the annular copper sheet.

2. The flat conductive slip ring according to claim 1, It is characterized in that The stator shell is provided with a first plug-in column, each of the ring-molded parts is provided with a first plug-in hole, and each of the ring-molded parts is inserted into the corresponding first plug-in hole through the first plug-in column to be fixedly mounted on the stator shell.

3. The flat conductive slip ring according to claim 1, It is characterized in that A plurality of fixing seats are sequentially arranged on the mounting plate along its extension direction, a second plug-in column is arranged on the plurality of fixing seats, a second plug-in hole is arranged at the bottom of the plurality of brush mounting frames, and the plurality of brush mounting frames are fixedly installed on the plurality of fixing seats one by one by inserting the second plug-in column into the second plug-in hole.

4. The flat conductive slip ring according to claim 1, It is characterized in that The middle part of the brush wire is fixedly connected to the brush wire mounting frame, and its two ends are arranged as elastic arms arranged in an eight-shaped shape. The ends of the elastic arms extend into the mounting groove as power connection parts and overlap the side circumference of the annular copper sheet.

5. The flat conductive slip ring according to any one of claims 1 to 4, It is characterized in that Three annular plastic parts are fixedly arranged in sequence along the radial direction inward on the stator shell, which are a large annular plastic part, a middle annular plastic part and a small annular plastic part; a large annular copper sheet, a middle annular copper sheet and a small annular copper sheet are arranged on the large annular plastic part, the middle annular plastic part and the small annular plastic part respectively; A plurality of brush wires are fixedly arranged radially on the rotor shell, which are respectively a first brush wire, a second brush wire and a third brush wire. The first brush wire, the second brush wire and the third brush wire are respectively in contact with the side circumferential surfaces of the large annular copper sheet, the middle annular copper sheet and the small annular copper sheet in a one-to-one correspondence.

6. The flat conductive slip ring according to claim 5, It is characterized in that The stator shell and the rotor shell are both provided with a central through hole in the center, and the stator shell and the rotor shell are connected together by screws and a central shaft passing through the central through holes of the two. An inner bearing is provided outside the central shaft so that the rotor shell can rotate around the central shaft.

7. The flat conductive slip ring according to claim 5, It is characterized in that The stator case is provided with an outer wall of the stator case and an inner wall of the stator case in sequence radially inward, and an annular groove is formed between the outer wall of the stator case and the inner wall of the stator case. When the stator case and the rotor case are buckled together, the side wall of the rotor case is limited in the annular groove.

8. The flat conductive slip ring according to claim 7, It is characterized in that An outer bearing is arranged between the outer periphery of the stator shell and the outer periphery of the rotor shell, the outer ring of the outer bearing is fixedly connected to the side wall of the rotor shell, and the inner ring of the outer bearing is fixedly connected to the stator shell.

Images