Thin conductive slip ring

Abstract

The utility model discloses a thin conductive slip ring, which comprises a shaft sleeve, a stator and a rotor which are sequentially sleeved and installed from inside to outside, the inner wall of the shaft sleeve is provided with at least one bump, the shaft sleeve comprises a first end and a second end, the second end of the shaft sleeve is accommodated in the rotor, and the first end of the shaft sleeve is connected with the stator. Or the second end of the shaft sleeve is flush with the outer end face of the rotor. According to the thin conductive slip ring, the protruding block is arranged in the shaft sleeve to be in positioning connection with the driving mechanism connecting pipe, the shaft sleeve does not need to protrude out of the rotor, screws do not need to be screwed on the side face of the shaft sleeve, assembly is convenient, meanwhile, the conductive slip ring is thinner, and the space needed for installation is reduced.

Description

Technical Field

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

[0002] Conductive slip rings are used in electrical contact sliding connections to achieve electrical connection between two relatively rotating mechanisms. They consist of a stator, rotor, and brushes. The stator is fixedly connected to the fixed portion of the device, while the rotor is fixedly connected to the rotating portion of the device. The stator and rotor rotate in unison, electrically connected to the rotor via brushes. Power and signals are transmitted through the stator, brushes, and rotor to the rotating portion of the device.

[0003] For example, the utility model patent with application number 2020226091099 discloses a conductive slip ring, which has the following problems: the stator is sleeved on the outside of the cylinder, and the cylinder protrudes axially from the rotor. When the conductive slip ring is applied to the annular chandelier with application number 2020109323850, the cylinder is sleeved on the outside of the connecting tube of the driving mechanism, and is fixed to the outer surface of the connecting tube of the driving mechanism by screws on the side of the protruding end of the cylinder. In addition, a limit block is provided in the circumferential direction of the protruding end of the cylinder to limit the axial position of the rotor. The limit block is also fixed to the protruding end of the cylinder by screws. Both the fixation with the connecting tube of the driving mechanism and the limiting of the rotor require multiple screws inserted through the side, which cannot be assembled by equipment, and manual assembly is time-consuming and labor-intensive; the cylinder is protruding on the outside of the rotor, which makes the thickness of the conductive slip ring too thick, limiting the number of rotating lamps on the annular chandelier. Utility Model Content

[0004] The purpose of the utility model is to provide a thin conductive slip ring. By arranging a protrusion inside the sleeve to perform a positioning connection with the connecting pipe of the driving mechanism, the sleeve does not need to protrude from the rotor, and there is no need to screw on the side of the sleeve. While facilitating assembly, the conductive slip ring is made thinner and the space required for installation is reduced.

[0005] A thin conductive slip ring comprises a sleeve, a stator and a rotor which are sequentially sleeved and installed from the inside to the outside. The inner wall of the sleeve is provided with at least one protrusion. The sleeve comprises a first end and a second end. The second end of the sleeve is received in the rotor, or the second end of the sleeve is flush with the outer end surface of the rotor.

[0006] Preferably, the outer shell is sleeved on the outer side of the rotor, the outer shell is fixedly connected to the rotor, and rotates synchronously with the rotor.

[0007] Preferably, it further includes an annular cover plate, which is coaxially arranged with the shaft sleeve, and is fixedly connected to the second end of the shaft sleeve. The outer diameter of the annular cover plate is larger than the outer diameter of the second end of the shaft sleeve. The inner wall of the rotor is provided with a limiting structure, and the end surface of the annular cover plate away from the shaft sleeve abuts against the limiting structure.

[0008] Preferably, a plurality of protrusions are distributed on the inner wall of the shaft sleeve along the circumferential direction, the plurality of protrusions protrude axially from the shaft sleeve, and the annular cover plate is sleeved on the outside of the plurality of protrusions.

[0009] Preferably, a bearing is further included, wherein the bearing sleeve is arranged on the outside of the sleeve and has an interference fit with the sleeve, a positioning structure is provided at the first end of the sleeve, and the bearing and the stator are axially arranged between the annular cover plate and the positioning structure.

[0010] Preferably, a wire groove is provided on the outer 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 to the wire groove accordingly, and the lead wire of the stator passes through the wire groove and the wire hole.

[0011] Preferably, the rotor includes a plurality of arc-shaped docking blocks, and the plurality of arc-shaped docking blocks are arranged in a circular ring shape.

[0012] Preferably, a positioning assembly is provided between two adjacent arc-shaped docking blocks, and the positioning assembly includes 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 the other adjacent arc-shaped docking block.

[0013] Preferably, a plurality of conductive ring grooves are distributed axially on the outer wall of the stator, and at least one of the arc-shaped docking blocks is provided with a through-hole, in which a brush wire is passed. One end of the brush wire passes through the through-hole to the inside of the rotor and contacts the bottom of the conductive ring groove.

[0014] Preferably, the housing is provided with a notch, and the wire connected to the brush wire is led out through the notch.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. By setting a protrusion in the sleeve to engage with the groove on the connecting tube of the driving mechanism on the annular chandelier, the rotation of the sleeve can be restricted, and the sleeve can be restricted in the rotor or flush with the end of the sleeve, thereby achieving the thinning of the conductive slip ring and reducing the space required for installation.

[0017] 2. The annular cover is secured to the second end of the sleeve with screws, enabling easy installation. This design eliminates the need for additional screw-locking stops on the outer wall of the sleeve, simplifying the installation process. The flat screw locking mechanism not only facilitates the use of the equipment but also greatly facilitates the installation process. Once the annular cover is secured in place, the restraining action of the rotor ensures precise positioning of the sleeve, bearing, and stator, guaranteeing the stability and reliability of the entire system.

[0018] 3. By setting the rotor as two arc-shaped docking blocks of the Hough structure, the installation of the brush wire and the rotor is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of the conductive slip ring in the present utility model;

[0021] Figure 2 This is an explosion diagram of the conductive slip ring in the utility model;

[0022] Figure 3 This is an exploded schematic diagram of the rotor in the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the shell in the utility model Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the structure of the shell in the utility model Figure 2 .

[0025] 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. Through hole; 33. Brush wire; 34. Limiting structure; 35. Positioning block; 36. Positioning groove; 37. Annular groove; 4. Housing; 41. Notch; 42. Rib; 5. Annular cover; 51. Wire hole; 6. Bearing. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1:

[0028] A thin conductive slip ring, combined with Figure 1-5 As shown, it includes 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 housing 4 is fixedly connected to the rotor 3 and rotates synchronously with the rotor 3.

[0029] The inner wall of the sleeve 1 is provided with at least one protrusion 13, which can be used to sleeve the conductive slip ring on the outside of the connecting rod or the connecting tube. The protrusion 13 is engaged with the groove on the outside of the connecting tube of the driving mechanism on the annular chandelier, thereby realizing the limited installation of the conductive slip ring.

[0030] The sleeve 1 includes a first end and a second end. To make the conductive slip ring sufficiently thin, the second end of the sleeve 1 is housed within the rotor 3 or flush with the outer end surface of the rotor 3, thereby preventing the sleeve 1 from protruding from the rotor 3 and increasing the thickness of the conductive slip ring. In this embodiment, although the first end of the sleeve 1 protrudes from the rotor 3, it is confined within the housing 4 or flush with the end surface of the housing 4, thereby not increasing the thickness of the conductive slip ring. Those skilled in the art will appreciate that the first end of the sleeve 1 can be completely housed within the housing 4, depending primarily on the structural configuration of the housing 4.

[0031] The outer side of the sleeve 1 is provided with a bearing 6 and a stator 2. A positioning structure 11 extends radially outward from the first end of the sleeve 1. The second end of the sleeve 1 is fixedly connected to an annular cover plate 5. 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 coaxial with the sleeve 1. The outer diameter of the annular cover plate 5 is larger than the outer diameter of the second end of the sleeve 1. The inner wall of the rotor 3 is provided with a retaining structure 34. The end surface of the annular cover plate 5 away from the sleeve 1 abuts against the retaining structure 34.

[0032] The bearing 6 forms an interference fit with the sleeve 1 and provides stable support for the slip ring's rotor 3, ensuring it maintains precise position during rotation. By reducing friction between the rotor 3 and the sleeve 1, the bearing 6 reduces energy loss and extends the equipment's service life. The bearing 6 ensures that the slip ring's rotor 3 maintains concentricity with the fixed component during rotation, which is crucial for maintaining stable electrical contact. The bearing 6 also absorbs shock and vibration caused by equipment operation or the external environment, protecting the slip ring from damage.

[0033] In this embodiment, the bearing 6 is located near the positioning structure 11, while the stator 2 is located near the annular cover plate 5. The outer diameter of the bearing 6 is larger than that of the stator 2. The inner wall of the rotor 3 has an annular groove 37 for accommodating the bearing 6, which limits the position of the bearing 6 and prevents the bearing 6 from affecting the stator 2.

[0034] A rib 42 extends radially inward from one end of the housing 4 and is screwed to the rotor 3 via the rib 42. The second end of the sleeve 1 is restrained by a retaining structure 34 on the rotor 3, thereby preventing the sleeve 1 and stator 2 from slipping out of the rotor 3. The retaining structure 34 can be an annular ridge or a plurality of annular blocks arranged at intervals.

[0035] Specifically, a plurality of protrusions 13 are distributed along the circumferential direction on the inner wall of the sleeve 1 . The plurality of protrusions 13 protrude axially from the sleeve 1 . The annular cover plate 5 is sleeved on the outside of the plurality of protrusions 13 to limit the position of the annular cover plate 5 .

[0036] The outer wall of the sleeve 1 is provided with a wire slot 12, and the annular cover plate 5 is provided with a wire hole 51. The wire hole 51 is connected to the wire slot 12, and the lead wires of the stator 2 are passed through the wire slot 12 and the wire hole 51. Specifically, the wire hole 51 is aligned with one of the protrusions 13, facilitating alignment and installation. Those skilled in the art will appreciate that the wire hole 51 can also be provided on the positioning structure 11. The positioning structure 11 can be an annular ridge or a plurality of spaced annular blocks.

[0037] The rotor 3 includes a plurality of arcuate docking blocks 31 arranged in a circular pattern. A positioning assembly is provided between adjacent arcuate docking blocks 31. The positioning assembly includes a positioning block 35 and a positioning slot 36. The positioning block 35 is provided on one arcuate docking block 31, and the positioning slot 36 is provided on the other adjacent arcuate docking block 31.

[0038] The outer wall of the stator 2 is axially distributed with multiple conductive annular grooves 21. Three lead wires are fixedly installed in the wire grooves 12 of the sleeve 1 with glue filling and insulation at intervals. 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 with screws to ensure that the sleeve 1 and rotor 3 can move along the axis during installation and transportation. Glue is then filled into the wire holes 51 to secure the lead wires. At least one arc-shaped docking block 31 is provided with a through-hole 32, through which a brush wire 33 is inserted. The brush wire 33 is passed through the through-hole 32 to the interior of the rotor 3, where one end contacts the bottom of the conductive annular groove 21. The rotor 3 is equipped with six brush wires 33 that are inserted into the through-holes 32. The lead wires are then led out and glue is filled to secure the brush wires 33 and the wires. The housing 4 has a notch 41, through which the wires connected to the brush wires 33 are led out.

[0039] During installation, the conductive slip ring is installed on the outside of the connecting tube of the driving mechanism. The protrusion inside the sleeve 1 is engaged 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 to the flange of the driving mechanism and can rotate continuously for 360 degrees without winding.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thin conductive slip ring, characterized in that: The invention comprises a shaft sleeve (1), a stator (2) and a rotor (3) which are sequentially sleeved and installed from the inside to the outside, wherein the inner wall of the shaft sleeve (1) is provided with at least one protrusion (13), the shaft sleeve (1) comprises a first end and a second end, the second end of the shaft sleeve (1) is received in the rotor (3), or the second end of the shaft sleeve (1) is flush with the outer end surface of the rotor (3).

2. A thin conductive slip ring according to claim 1, characterized in that: It also includes a housing (4), which is sleeved on the outside of the rotor (3), and the housing (4) is fixedly connected to the rotor (3) and rotates synchronously with the rotor (3).

3. The thin 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 the second end of the shaft sleeve (1), the outer diameter of the annular cover plate (5) being larger than the outer diameter of the second 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) abutting against the limiting structure (34).

4. A thin conductive slip ring according to claim 3, characterized in that: The inner wall of the shaft sleeve (1) is provided with a plurality of protrusions (13) distributed along the circumferential direction, the plurality of protrusions (13) protrude axially from the shaft sleeve (1), and the annular cover plate (5) is sleeved on the outside of the plurality of protrusions (13).

5. The thin conductive slip ring according to claim 3, characterized in that: The stator (2) further comprises a bearing (6), the bearing (6) being sleeved on the outer side of the shaft sleeve (1) and having an interference fit with the shaft sleeve (1), a positioning structure (11) being provided at the first end of the shaft sleeve (1), and the bearing (6) and the stator (2) being axially arranged between the annular cover plate (5) and the positioning structure (11).

6. The thin conductive slip ring according to claim 5, characterized in that: The outer wall of the shaft sleeve (1) is provided with a wire groove (12), and 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 exits.

7. The thin conductive slip ring according to claim 2, characterized in that: The rotor (3) comprises a plurality of arc-shaped docking blocks (31), and the plurality of arc-shaped docking blocks (31) are arranged in a circular ring shape.

8. The thin conductive slip ring according to claim 7, 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).

9. The thin conductive slip ring according to claim 7, characterized in that: A plurality of conductive annular grooves (21) are distributed axially on the outer side wall of the stator (2), and a through hole (32) is provided on at least one of the arc-shaped docking blocks (31). A brush wire (33) is passed through the through hole (32), and one end of the brush wire (33) is passed through the through hole (32) to the inside of the rotor (3) and contacts the bottom of the conductive annular groove (21).

10. The thin conductive slip ring according to claim 9, 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).

Images