Conductive slip ring

Abstract

The conductive slip ring comprises a shaft sleeve, a stator, a rotor and a housing which are sequentially sleeved and installed from inside to outside, the rotor comprises a plurality of arc-shaped butt joint blocks, the plurality of arc-shaped butt joint blocks are enclosed to form a circular ring shape, and the housing is fixedly connected with the rotor and synchronously rotates with the rotor. According to the conductive slip ring provided by the utility model, the stator is located inside the rotor, the rotor is formed by enclosing the two arc-shaped butt joint blocks with the Haff structure, and the rotor with the Haff structure is convenient for installation of the electric brush wires and the rotor.

Description

Technical Field

[0001] The utility model relates to the technical field of electromechanical connectors, and particularly relates to a conductive slip ring. Background Art

[0002] The conductive slip ring belongs to the application category of electrical contact sliding connection and realizes the electrical connection of two relatively rotating mechanisms. The conductive slip ring includes a stator, a rotor and a brush. The stator is fixedly connected to the fixed part of the device, the rotor is fixedly connected to the rotating part of the device, the stator is rotationally matched with the rotor, and the stator is electrically connected to the rotor through the brush. Electric power and signals are transmitted to the rotating part of the device after passing through the stator, the brush and the rotor in sequence.

[0003] For example, in the invention patent with the application number 2014103344538, a conductive slip ring is disclosed. The conductive slip ring includes a rotor assembly, a stator assembly and a housing. The stator assembly covers the rotor assembly, and the housing is sleeved outside the stator assembly. The rotor of the conductive slip ring is located inside the stator because in most scenarios where a conductive slip ring is used, there is an output shaft in the middle to drive the rotor to rotate. And the applicant now needs to design a conductive slip ring, which is applied to the annular chandelier with the application number 2020109323850. The conductive slip ring needs to be fixedly connected to the connecting pipe of the driving mechanism. Therefore, a conductive slip ring needs to be designed with the stator located inside the rotor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a conductive slip ring, in which the stator is located inside the rotor. The rotor is formed by enclosing two arc-shaped docking blocks with a split structure. The rotor with a split structure is convenient for the installation of brush wires and also for assembly, and then is fixed into a ring by the housing, with a simple structure and convenient installation.

[0005] The conductive slip ring includes a shaft sleeve, a stator, a rotor and a housing which are sleeved and installed in sequence from the inside to the outside. The rotor includes a plurality of arc-shaped docking blocks, and the plurality of arc-shaped docking blocks enclose a circular ring shape. The housing is fixedly connected to the rotor and rotates synchronously with the rotor.

[0006] Preferably, it further includes an annular cover plate which is coaxially arranged with the shaft sleeve. The annular cover plate is fixedly connected to one end of the shaft sleeve. The outer diameter of the annular cover plate is larger than the outer diameter of this end of the shaft sleeve. A limiting structure is arranged on the inner wall of the rotor, and the end face of the annular cover plate far from the shaft sleeve abuts against the limiting structure.

[0007] Preferably, it further includes a bearing which is sleeved outside the shaft sleeve and is in interference fit with the shaft sleeve. A positioning structure is arranged at one end of the shaft sleeve far from the annular cover plate. The bearing and the stator are axially arranged between the annular cover plate and the positioning structure.

[0008] Preferably, a wire groove is provided on the outer side wall of the shaft sleeve, and a wire hole is opened on the annular cover plate or the positioning structure. The wire hole is connected with the wire groove correspondingly, and the lead wire of the stator passes through the wire groove and the wire hole.

[0009] Preferably, a positioning assembly is provided between two adjacent arc-shaped docking blocks, and the positioning assembly comprises a positioning block and a positioning groove. The positioning block is provided on one of the arc-shaped docking blocks, and the positioning groove is provided on another adjacent arc-shaped docking block.

[0010] Preferably, a plurality of conductive annular grooves are axially distributed on the outer wall of the stator, at least one of the arc-shaped docking blocks is provided with a through hole, a brush wire is passed through the through hole, and one end of the brush wire is passed through the through hole to the inside of the rotor and contacts the bottom of the conductive annular groove.

[0011] Preferably, the housing is provided with a notch, and the wire connected to the brush wire is led out through the notch.

[0012] Preferably, the inner wall or the end of the sleeve is provided with a plurality of protrusions along the circumferential direction, and the annular cover plate is sleeved on the outer sides of the plurality of protrusions.

[0013] Preferably, a rib extends radially inwardly from one end of the housing, and the rib is fixedly connected to the rotor.

[0014] Preferably, the outer diameter of the bearing is greater than the outer diameter of the stator, and the inner side wall of the rotor has an annular groove for accommodating the bearing.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] 1. By setting the rotor as two arc-shaped docking blocks of the Hough structure, it is convenient to install the brush wire and the rotor;

[0017] 2. The annular cover is fixed to the second end of the sleeve by screws, which realizes a simple installation method. This design avoids the need to install additional screw locking limit blocks on the outer wall of the sleeve, thereby simplifying the installation process. The locking of the flat screws not only facilitates the use of the equipment, but also provides great convenience for the installation process. Once the annular cover is fixed in place, the limiting effect of the rotor will ensure the precise positioning of the sleeve, bearing and stator, thereby ensuring the stability and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the conductive slip ring in the present invention;

[0020] Figure 2 Explosion schematic diagram of the conductive slip ring in the present invention;

[0021] Figure 3 Explosion schematic diagram of the rotor in the present invention;

[0022] Figure 4 Structural schematic of the outer shell in the present invention Figure 1 ;

[0023] Figure 5 Structural schematic of the outer shell in the present invention Figure 2 .

[0024] In the figure: 1, bushing; 11, positioning structure; 12, wire groove; 13, bump; 2, stator; 21, conductive ring groove; 3, rotor; 31, arc-shaped docking block; 32, perforation; 33, brush wire; 34, limiting structure; 35, positioning block; 36, positioning groove; 37, annular groove; 4, outer shell; 41, notch; 42, retaining edge; 5, annular cover plate; 51, wire hole; 6, bearing. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0026] Embodiment 1:

[0027] A conductive slip ring, as shown in combination with Figures 1-5 , includes a bushing 1, a stator 2, a rotor 3, and an outer shell 4 that are sleeved and installed in sequence from the inside to the outside.

[0028] The rotor 3 includes a plurality of arc-shaped docking blocks 31, and the plurality of arc-shaped docking blocks 31 are arranged in a circular ring. A positioning component is provided between two adjacent arc-shaped docking blocks 31. The positioning component includes a positioning block 35 and a positioning groove 36. The positioning block 35 is provided on one arc-shaped docking block 31, and the positioning groove 36 is provided on the adjacent other arc-shaped docking block 31. In this embodiment, the arc-shaped docking block 31 includes two of the split structure.

[0029] The bushing 1 includes a first end and a second end. A bearing 6 and a stator 2 are sleeved on the outer side of the bushing 1. A positioning structure 11 extends radially outward from the first end of the bushing 1. An annular cover plate 5 is fixedly connected to the second end of the bushing 1. The bearing 6 and the stator 2 are axially arranged between the annular cover plate 5 and the positioning structure 11. The annular cover plate 5 is coaxially arranged with the bushing 1. The outer diameter of the annular cover plate 5 is greater than the outer diameter of the second end of the bushing 1. A limiting structure 34 is provided on the inner wall of the rotor 3. The end face of the annular cover plate 5 away from the bushing 1 abuts against the limiting structure 34.

[0030] One end of the housing 4 extends radially inward to form a flange 42. The rotor 3 is fixed to the flange 42 by screws, so that the rotor 3 is circular and rotates synchronously with the flange 42. The second end of the bushing 1 is restricted by the annular cover plate 5 and the limiting structure 34 of the rotor 3, so that the bushing 1 and the stator 2 cannot break away from the rotor 3. The limiting structure 34 can be an annular rib or a plurality of annular blocks arranged at intervals.

[0031] The bearing 6 is in interference fit with the bushing 1. The bearing 6 provides stable support for the rotor 3 of the conductive slip ring to ensure its accurate position during rotation. The bearing 6 reduces the friction between the rotor 3 and the bushing 1 to reduce energy loss and extend the service life of the equipment. The bearing 6 can ensure that the rotor 3 of the conductive slip ring maintains concentricity with the fixed parts during rotation, which is crucial for maintaining the stability of electrical contact. The bearing 6 can absorb the impact and vibration caused by equipment operation or the external environment to protect the conductive slip ring from damage.

[0032] In this embodiment, the bearing 6 is close to the positioning structure 11, and the stator 2 is close to the annular cover plate 5. The outer diameter of the bearing 6 is greater than the outer diameter of the stator 2. An annular groove 37 for accommodating the bearing 6 is provided on the inner side wall of the rotor 3 to limit the position of the bearing 6, which can prevent the bearing 6 from affecting the stator 2.

[0033] Specifically, a plurality of convex blocks 13 are distributed on the inner wall of the bushing 1 along the circumferential direction. The plurality of convex blocks 13 protrude axially from the bushing 1. The annular cover plate 5 is sleeved outside the plurality of convex blocks 13 to limit the position of the annular cover plate 5. Those skilled in the art should understand that a plurality of convex blocks 13 can also be provided along the circumferential direction at the end of the bushing 1, and the annular cover plate 5 is sleeved outside the plurality of convex blocks 13. When the convex blocks 13 are provided on the inner wall of the bushing 1, when the conductive slip ring is sleeved on the outside of the connecting rod or the connecting pipe, the convex blocks 13 of the bushing 1 can be clamped with the grooves on the outside of the connecting pipe of the driving mechanism on the annular chandelier, so as to realize the limit installation of the conductive slip ring.

[0034] The outer wall of the sleeve 1 is provided with a wire groove 12, and the annular cover plate 5 is provided with a wire hole 51, which is correspondingly connected to the wire groove 12. The lead wire of the stator 2 passes through the wire groove 12 and the wire hole 51. Specifically, the wire hole 51 is aligned with one of the protrusions 13 to facilitate alignment and installation. Those skilled in the art should understand that the wire hole 51 can also be set on the positioning structure 11. The positioning structure 11 is an annular convex ridge, or it can be a plurality of annular blocks arranged at intervals.

[0035] There are three conductive annular grooves 21 distributed axially on the outer wall of the stator 2. Three lead wires are fixedly installed in the wire groove 12 of the sleeve 1 by filling glue at intervals and insulation. After the lead wires are led out through the wire holes 51 of the annular cover plate 5, the annular cover plate 5 is fixed to the second end of the sleeve 1 by screws to ensure that the sleeve 1 and the rotor 3 do not move on the axis during installation and transportation, and the lead wires are fixed by filling glue in the wire holes 51. At least one arc-shaped docking block 31 is provided with a through hole 32, and a brush wire 33 is inserted in the through hole 32. One end of the brush wire 33 is inserted into the rotor 3 through the through hole 32 and contacts the bottom of the conductive annular groove 21. Six brush wires 33 are inserted into the through hole 32 on the rotor 3, and the wires are led out and glue is filled to fix the brush wires 33 and the wires. The housing 4 is provided with a notch 41, and the wires connected to the brush wires 33 are led out through the notch 41.

[0036] The second end of the shaft sleeve 1 may protrude from the rotor 3 , or may be received in the rotor 3 , or the second end of the shaft sleeve 1 may be flush with the outer end surface of the rotor 3 .

[0037] During installation, the conductive slip ring is arranged on the outside of the connecting tube of the driving mechanism, and the protrusion inside the sleeve 1 is snap-fitted with the groove on the outside of the connecting tube, so that the sleeve 1 cannot rotate relative to the connecting tube. The outer shell 4 is screwed and fixed on the flange of the driving mechanism, and can rotate continuously for 360 degrees without winding.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. Conductive slip ring, characterized in that: The invention comprises a shaft sleeve (1), a stator (2), a rotor (3) and a housing (4) which are sequentially sleeved and installed from the inside to the outside, the rotor (3) comprising a plurality of arc-shaped docking blocks (31), the plurality of arc-shaped docking blocks (31) being arranged in a circular ring shape, the housing (4) being fixedly connected to the rotor (3) and rotating synchronously with the rotor (3).

2. The conductive slip ring according to claim 1, characterized in that: The rotor (3) further comprises an annular cover plate (5), the annular cover plate (5) being coaxially arranged with the shaft sleeve (1), the annular cover plate (5) being fixedly connected to one end of the shaft sleeve (1), the outer diameter of the annular cover plate (5) being larger than the outer diameter of the end of the shaft sleeve (1), the inner wall of the rotor (3) being provided with a limiting structure (34), and the end surface of the annular cover plate (5) away from the shaft sleeve (1) abuts against the limiting structure (34).

3. The conductive slip ring according to claim 2, characterized in that: The invention also comprises a bearing (6), wherein the bearing (6) is sleeved on the outer side of the shaft sleeve (1) and is interference fit with the shaft sleeve (1); a positioning structure (11) is provided at one end of the shaft sleeve (1) away from the annular cover plate (5); and the bearing (6) and the stator (2) are axially arranged between the annular cover plate (5) and the positioning structure (11).

4. The conductive slip ring according to claim 3, characterized in that: The outer wall of the shaft sleeve (1) is provided with a wire groove (12), the annular cover plate (5) or the positioning structure (11) is provided with a wire hole (51), the wire hole (51) is correspondingly connected to the wire groove (12), and the lead wire of the stator (2) passes through the wire groove (12) and the wire hole (51) and then comes out.

5. The conductive slip ring according to claim 1, characterized in that: A positioning assembly is provided between two adjacent arc-shaped docking blocks (31), the positioning assembly comprising a positioning block (35) and a positioning groove (36), the positioning block (35) being provided on one of the arc-shaped docking blocks (31), and the positioning groove (36) being provided on the other adjacent arc-shaped docking block (31).

6. The conductive slip ring according to claim 1, characterized in that: A plurality of conductive annular grooves (21) are axially distributed on the outer side wall of the stator (2), and at least one of the arc-shaped docking blocks (31) is provided with a through hole (32), in which a brush wire (33) is passed. One end of the brush wire (33) passes through the through hole (32) to the inside of the rotor (3) and contacts the bottom of the conductive annular groove (21).

7. The conductive slip ring according to claim 6, characterized in that: The housing (4) is provided with a notch (41), and a wire connected to the brush wire (33) is led out through the notch (41).

8. The conductive slip ring according to claim 2, characterized in that: The inner wall or end of the shaft sleeve (1) is provided with a plurality of protrusions (13) along the circumferential direction, and the annular cover plate (5) is sleeved on the outside of the plurality of protrusions (13).

9. The conductive slip ring according to claim 1, characterized in that: A rib (42) extends radially inwardly from one end of the housing (4), and the rib (42) is fixedly connected to the rotor (3).

10. The conductive slip ring according to claim 3, characterized in that: The outer diameter of the bearing (6) is greater than the outer diameter of the stator (2), and the inner side wall of the rotor (3) has an annular groove (37) for accommodating the bearing (6).

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