A conductive slip ring

Abstract

The present invention relates to the technical field of electromechanical devices, and specifically to a conductive slip ring, including a rotor and a stator, wherein the rotor includes a plurality of coaxially arranged rotor shafts, and the rotor shafts are sleeved with a plurality of conductive rings along the axial direction; the stator includes a brush member, and the rotor shaft is nested in the brush member, and the rotor shaft is rotatably connected to the brush member. The beneficial effect is that the present invention adopts a multi-layer conductive ring design, which maximizes the use of space within a fixed limited space, and the spacing between the two conductive rings is relatively ample, and various electrical properties and signal transmission properties can be transmitted very stably, and strict requirements are better met. The outer layer is produced by injection molding of a special mold, and the inner layer is also produced by injection molding of a special mold. When the layers rotate simultaneously, bearings or clamping rings can be used. When working, the inner and outer layers can simultaneously transmit power and signals of each line without interfering with each other.

Description

Technical Field

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

[0002] At present, the micro slip rings developed worldwide are mainly cap-type slip rings. Micro slip rings are mainly used for 360-degree uninterrupted transmission of power and signals, and have strict requirements on the appearance size and stability of use. Traditional cap-type slip rings are designed with single-layer copper rings. In order to achieve more rings within a limited size, the control of product size is achieved by thinning copper rings or spacer rings to meet the needs of miniaturization.

[0003] For example, Chinese patent CN206332312U discloses a conductive slip ring with a V-groove copper ring, which is characterized in that it includes a stator, a rotor, a bearing, a housing, an insulating male ring, a brush plate and a conductive ring; the inner side of the stator is connected to the rotor through a bearing; the housing is engaged with the outer side of the stator; a slot is provided on the stator, the brush plate is installed in the slot, and a brush wire is provided on the brush plate, and the material of the brush wire is metallic copper; the insulating male ring and the conductive ring are both arranged on the rotor, and the surface of the conductive ring is provided with a V-groove along the circumference thereof, and the conductive ring is made of metallic copper, and the insulating male ring separates any two adjacent conductive rings; the brush wire is slidably connected to the V-groove of the conductive ring.

[0004] The above-mentioned type of micro conductive slip ring has many transmission lines, and its internal design adopts a single-layer copper ring design, so the distance between the two copper rings is very narrow, which is not only difficult to manufacture, but also various electrical properties and signal transmission performances cannot be well guaranteed. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a conductive slip ring.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0007] A conductive slip ring comprises a rotor and a stator, wherein the rotor comprises a plurality of coaxially arranged rotor shafts, each of which is sleeved with a plurality of conductive rings along the axial direction; the stator comprises a brush member, the rotor shaft is nested in the brush member, and the rotor shaft is rotationally connected to the brush member.

[0008] Preferably, the rotor includes two rotor shafts, an inner shaft and an outer shaft respectively, and the brush assembly includes a first brush body and a second brush body coaxially arranged, the first brush body and the second brush body are respectively sleeved on the inner shaft and the outer shaft, the inner shaft is rotatably connected to the first brush body, and the inner and outer sides of the outer shaft are respectively rotatably connected to the first brush body and the second brush body.

[0009] Preferably, the first brush body and the second brush body are respectively provided with a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are arranged opposite to each other, the first connecting portion is connected to the inner side of the outer shaft through a bearing or a clamping ring, and the second connecting portion is connected to the outer side of the outer shaft through a bearing or a clamping ring.

[0010] Preferably, a covering portion for covering the outer shaft, the inner shaft and the end of the first brush body is provided at one end of the second brush body, and a stator end wire outlet is provided on the covering portion, and the stator end wire outlet is communicated with the outer shaft.

[0011] Preferably, the second brush body consists of two symmetrical brush halves.

[0012] Preferably, the stator comprises a connecting plate, the connecting plate is fixedly connected to the covering portion, and the two brush halves are fixedly connected via the connecting plate.

[0013] Preferably, the stator further comprises a shell, which is sleeved on the outer side of the second brush body, and a gap is formed between the shell and the connecting plate, and the gap is connected to the stator end wire outlet to form a stator end wire channel.

[0014] Preferably, the first brush body and the second brush body are both provided with a plurality of brush holes, brush wires are provided in the brush holes, and the brush wires are slidably matched with the conductive ring.

[0015] Preferably, a plurality of rotor-end wire outlet holes are provided at the end of the outer shaft opposite to the stator-end wire outlet.

[0016] Preferably, the rotor includes a flange and a pressure plate, the flange matches the inner shaft and the outer shaft, one end of the inner shaft and the outer shaft away from the stator end wire outlet is fixedly connected to one side of the flange, and the pressure plate is fixedly connected to the other side of the flange; a through hole is provided on the flange at a position corresponding to the rotor end wire outlet hole, a gap is formed between the pressure plate and the flange, and the rotor end wire outlet hole, the through hole and the gap constitute a rotor end wire channel.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts a multi-layer conductive ring design, which maximizes the use of space within a fixed limited space, and the spacing between the two conductive rings is relatively ample, so various electrical properties and signal transmission properties can be transmitted very stably, better meeting strict requirements.

[0018] In a preferred embodiment, the bearings used in the present invention can be replaced by special retaining rings, which is not only easy to implement in structure, but also reduces manufacturing costs without affecting performance, so that the product can meet the needs of different customers in terms of specificity and versatility.

[0019] In a preferred embodiment, the conductive slip ring of the present invention, i.e., the design of the cap-shaped conductive slip ring, has a double-layer design in its internal structure, wherein the outer layer is produced by injection molding using a special mold, and the inner layer is also produced by injection molding using a special mold. When the inner and outer layers rotate simultaneously, bearings or clamping rings can be used. When working, the inner and outer layers can simultaneously transmit power and signals of various circuits without interfering with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present invention;

[0021] Figure 2 is an axial view of the present invention;

[0022] Figure 3 is a front view of the present invention;

[0023] Figure 4 It is a left side view of the present invention;

[0024] Figure 5 It is a right side view of the present invention;

[0025] Figure 6 is an assembly diagram of the present invention;

[0026] Figure 7 is an axial view of the inner shaft of the present invention;

[0027] Figure 8 is a front view of the inner shaft of the present invention;

[0028] Fig. 9 It is a left side view of the inner shaft of the present invention;

[0029] Fig.10 Figure 8 A local enlarged view of point A;

[0030] Fig.11 yes Figure 8 A partial enlarged view of point B;

[0031] Fig.12 is an axial view of the outer shaft of the present invention;

[0032] Fig.13 is a front view of the outer shaft of the present invention;

[0033] Fig.14 It is a left side view of the outer shaft of the present invention;

[0034] Fig.15 Fig.13 A local enlarged view of point A;

[0035] Fig.16 is a semi-axial view of a first brush body of the present invention;

[0036] Fig.17is a half front view of the first brush body of the present invention;

[0037] Fig.18 It is a half left side view of the first brush body of the present invention;

[0038] Fig.19 is a half right side view of the first brush body of the present invention;

[0039] Fig. 20 is a half-body top view of the first brush body of the present invention;

[0040] Fig.21 is a bottom view of a half of a first brush body of the present invention;

[0041] Fig. 22 is a brush half-body axial view of a second brush body of the present invention;

[0042] Fig.23 is a front view of a brush half of a second brush body of the present invention;

[0043] Fig.24 is a left side view of a brush half of a second brush body of the present invention;

[0044] Fig.25 is a right side view of a brush half of a second brush body of the present invention;

[0045] Fig.26 is a top view of a brush half of a second brush body of the present invention;

[0046] Fig. 27 is a bottom view of a brush half of a second brush body of the present invention;

[0047] Fig.28 is an axial view of the outer side of the flange of the present invention;

[0048] Fig.29 is an inner axial view of the flange of the present invention;

[0049] Fig.30 is a front view of the flange of the present invention;

[0050] Fig.31 It is a left side view of the flange of the present invention;

[0051] Fig.32 is a top view of the flange of the present invention;

[0052] Fig.33 It is a shell structure diagram of the present invention;

[0053] Fig.34 It is a schematic diagram of the inner brush wire structure of the present invention;

[0054] Fig.35 It is a schematic diagram of the structure of the outer brush wire of the present invention;

[0055] Fig.36 It is a axial view of the pressing plate of the present invention;

[0056] Fig.37 is a front view of a pressing plate of the present invention;

[0057] Fig.38 is a top view of a pressing plate of the present invention;

[0058] Fig.39 is an axial view of the connecting plate of the present invention;

[0059] Fig.40 is a front view of a connecting plate of the present invention;

[0060] Fig.41 It is a schematic diagram of the conductive ring structure of the present invention;

[0061] Fig.42 yes Fig.41 A partial enlarged view of

[0062] Fig.43 A schematic diagram of the bearing structure of the present invention;

[0063] Fig.44 A front view of the collar of the present invention;

[0064] Fig.45 Side view of the collar of the present invention.

[0065] In the figure: 1 inner shaft, 2 outer shaft, 2-1 rotor end wire outlet hole, 3 conductive ring, 3-1 V-shaped groove, 4 first brush body, 4-1 first connecting part, 5 second brush body, 5-1 covering part, 5-2 brush half body, 5-3 second connecting part, 5-1-1 stator end wire outlet, 6 connecting plate, 7 housing, 8 notch, 9 stator end wire channel, 10 brush hole, 11 brush wire, 11-1 outer brush wire, 11-2 inner brush wire, 12 pressure plate, 13 gap, 14 rotor end wire channel, 15 flange, 15-1 perforation, 16 stator end wire, 17 rotor end wire, 18 first bearing, 19 second bearing, 20 third bearing, 21 fourth bearing, 22 screw, 23 clamping groove, 24 clamping ring. DETAILED DESCRIPTION

[0066] 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.

[0067] Example 1: Figures 1 to 6As shown, a conductive slip ring of this embodiment includes a rotor and a stator. The rotor includes two rotor shafts, namely a hollow inner shaft 1 and a hollow outer shaft 2, and the inner shaft 1 and the outer shaft 2 are coaxially arranged. The inner shaft 1 and the outer shaft 2 are both made of black high and low temperature resistant flame retardant material, and the flame retardant material is PBT (polybutylene terephthalate) material + 30% GF. It can also be made of black high and low temperature resistant flame retardant material PBT + 30% glass fiber material or PPS + 30% glass fiber material. A plurality of conductive rings 3 are axially sleeved on the inner shaft 1 and the outer shaft 2; the stator includes a brush assembly, and the inner shaft 1 and the outer shaft 2 are both nested in the brush assembly, and the inner shaft 1 and the outer shaft 2 are both rotatably connected to the brush assembly. Among them, as Fig.41 , Fig.42 As shown, the conductive rings 3 are copper rings, and each conductive ring 3 has a V-shaped groove 3 - 1 .

[0068] like Figures 7 to 27 As shown, the brush assembly includes a first brush body 4 and a second brush body 5 which are coaxially arranged. The first brush body 4 and the second brush body 5 are both made of a black high and low temperature flame retardant material LCP + 30% glass fiber material, and can also be made of a black high and low temperature flame retardant material PBT + 30% glass fiber material or PPS + 30% glass fiber material. The first brush body 4 and the second brush body 5 are respectively sleeved on the inner shaft 1 and the outer shaft 2, and the inner shaft 1 is rotatably connected to the first brush body 4. Specifically, a second bearing 19 is provided between the end of the inner shaft 1 close to the flange 15 and the first brush body 4, and a first bearing 18 is provided between the end of the inner shaft 1 close to the cover 5-1 and the first brush body 4, and the inner and outer sides of the outer shaft 2 are rotatably connected to the first brush body 4 and the second brush body 5.

[0069] In this embodiment, the first connection part 4-1 and the second connection part 5-3 are respectively provided on the outer side of the first brush body 4 and the inner side of the second brush body 5. The first connection part 4-1 and the second connection part 5-3 are arranged opposite to each other, the first connection part 4-1 is close to one end of the connection plate 6, and the second connection part 5-3 is close to one end of the flange 15. The first connection part 4-1 is connected to the inner side of the outer shaft 2 through the third bearing 20, and the second connection part 5-3 is connected to the outer side of the outer shaft 2 through the fourth bearing 21. The above four bearings are all low-temperature bearings with a temperature range of -55℃-80℃.

[0070] The first brush body 4 and the second brush body 5 are provided with a plurality of brush holes 10 arranged evenly in the axial direction, and brush wires 11 are provided in the brush holes 10, and the brush wires 11 are slidably matched with the conductive ring 3. Fig.34 , Fig.35As shown, the brush wire 11 is divided into an outer brush wire 11-1 and an inner brush wire 11-2. The outer brush wire 11-1 and the inner brush wire 11-2 are different in size. The brush holes 10 of the first brush body 4 and the second brush body 5 correspond to the sizes of the inner brush wire 11-2 and the outer brush wire 11-1, respectively.

[0071] One end of the second brush body 5 is provided with a covering portion 5-1 for covering the ends of the outer shaft 2, the inner shaft 1 and the first brush body 4, and two symmetrical stator-end wire outlets 5-1-1 are opened on the covering portion 5-1, and the stator-end wire outlets 5-1-1 are connected to the inside of the outer shaft 2.

[0072] The second brush body 5 is composed of two symmetrical brush halves 5-2, on which the two brush halves 5-2 are respectively provided with sockets and pins, and the sockets and pins are respectively provided at the four corners of the brush halves 5-2. After the two brush halves 5-2 are plugged in, a complete second brush body 5 is formed, thereby forming a complete covering portion 5-1.

[0073] like Fig.39 , Fig.40 As shown, the stator includes a connecting plate 6, which is fixedly connected to the cover 5-1, and the two brush halves 5-2 are fixedly connected through the connecting plate 6. The cover 5-1 is provided with two screw holes, one on the left and one on the right, which are asymmetrically arranged. The two screw holes are respectively arranged on the two brush halves 5-2, and screws 22 are arranged on the corresponding screw holes on the connecting plate 6, so that the connecting plate 6 firmly combines the two brush halves 5-2 into a complete second brush body 5.

[0074] The stator further comprises a housing 7 made of stainless steel, the housing 7 is sleeved on the outer side of the second brush body 5, a notch 8 is formed between the housing 7 and the connecting plate 6, the notch 8 is connected with the stator end wire outlet 5-1-1 and forms a stator end wire channel 9 for the stator end wire 16 to pass through.

[0075] The end of the outer shaft 2 opposite to the stator end wire outlet 5-1-1 is provided with two groups of symmetrical rotor end wire outlet holes 2-1, each group of rotor end wire outlet holes 2-1 has eleven holes, and each group of rotor end wire outlet holes 2-1 is arranged in an arc shape, forming a crescent shape.

[0076] like Figure 6 , Figures 28 to 38As shown, the rotor includes a flange 15 and a stainless steel pressing plate 12, the flange 15 matches the inner shaft 1 and the outer shaft 2, the inner shaft 1 and the outer shaft 2 are located at one side of the flange 15 away from the stator end wire outlet 5-1-1, and are sleeved with the corresponding connecting hole, the inner shaft 1 is also provided with a clamping groove 23, and the flange 15 is clamped with the clamping claw of the clamping groove 23. The pressing plate 12 is clamped with the other side of the flange 15; the flange 15 is provided with a through hole 15-1 corresponding to the rotor end wire outlet hole 2-1, a gap 13 is formed between the pressing plate 12 and the flange 15, and the rotor end wire outlet hole 2-1, the through hole 15-1, and the gap 13 constitute the rotor end wire channel 14.

[0077] The rotor end wire 17 and the stator end wire 16 are both Teflon silver-plated high temperature wires. The present invention is composed of a rotor and a stator that rotate relative to each other, and the rotation angle is 360 degrees. The rotor end wire 17 is divided into two strands, each with an odd and even number, and the stator end wire 16 is divided into two strands, each with an odd and even number.

[0078] Embodiment 2: Based on the embodiment 1, an improvement is made. The first bearing 18, the second bearing 19, the third bearing 20, and the fourth bearing 21 in the embodiment 1 are replaced by corresponding retaining rings. The inner and outer diameters of the retaining rings are the same as the inner and outer diameters of the bearings at the corresponding positions. For example, the second bearing 19 is replaced by a retaining ring 24. The structure of the retaining ring 24 is as follows: Fig.44 , Fig.45 shown.

[0079] The present invention does not need to change the size of the copper ring or the spacer ring on the basis of the ordinary cap-shaped conductive slip ring, but only optimizes the internal structure on the basis of the existing single-layer copper ring, adds the design of the outer copper ring while keeping the outer size unchanged, and more effectively utilizes the original space on the basis of ensuring various performances, so that the product works more stably.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A conductive slip ring, characterized in that: It comprises a rotor and a stator, wherein the rotor comprises a plurality of coaxially arranged rotor shafts, each of which is sleeved with a plurality of conductive rings (3) along the axial direction; the stator comprises a brush member, the rotor shaft is nested in the brush member, and the rotor shaft is rotatably connected to the brush member; The rotor comprises two rotor shafts, namely an inner shaft (1) and an outer shaft (2); the brush member comprises a first brush body (4) and a second brush body (5) which are coaxially arranged; the first brush body (4) and the second brush body (5) are respectively sleeved on the inner shaft (1) and the outer shaft (2); the inner shaft (1) is rotatably connected to the first brush body (4); and the inner and outer sides of the outer shaft (2) are respectively rotatably connected to the first brush body (4) and the second brush body (5); The first brush body (4) and the second brush body (5) are both provided with a plurality of brush holes (10), brush wires (11) are provided in the brush holes (10), and the brush wires (11) are slidably matched with the conductive ring (3); One end of the second brush body (5) is provided with a covering portion (5-1) for covering the ends of the outer shaft (2), the inner shaft (1) and the first brush body (4); the covering portion (5-1) is provided with a stator end wire outlet (5-1-1), and the stator end wire outlet (5-1-1) is connected to the outer shaft (2); A plurality of rotor-end wire outlet holes (2-1) are provided at one end of the outer shaft (2) opposite to the stator-end wire outlet (5-1-1); The rotor comprises a flange (15) and a pressure plate (12); the flange (15) matches the inner shaft (1) and the outer shaft (2); one end of the inner shaft (1) and the outer shaft (2) away from the stator end wire outlet (5-1-1) is fixedly connected to one side of the flange (15); the pressure plate (12) is fixedly connected to the other side of the flange (15); a through hole (15-1) is provided on the flange (15) at a position corresponding to the rotor end wire outlet hole (2-1); a gap (13) is formed between the pressure plate (12) and the flange (15); the rotor end wire outlet hole (2-1), the through hole (15-1) and the gap (13) constitute a rotor end wire channel (14).

2. A conductive slip ring according to claim 1, characterized in that: The first brush body (4) and the second brush body (5) are respectively provided with a first connecting portion (4-1) and a second connecting portion (5-3), the first connecting portion (4-1) and the second connecting portion (5-3) are arranged opposite to each other, the first connecting portion (4-1) is connected to the inner side of the outer shaft (2) via a bearing or a clamping ring, and the second connecting portion (5-3) is connected to the outer side of the outer shaft (2) via a bearing or a clamping ring.

3. A conductive slip ring according to claim 1, characterized in that: The second brush body (5) consists of two symmetrical brush halves (5-2).

4. A conductive slip ring according to claim 3, characterized in that: The stator comprises a connecting plate (6), the connecting plate (6) is fixedly connected to the cover portion (5-1), and two brush halves (5-2) are fixedly connected via the connecting plate (6).

5. A conductive slip ring according to claim 4, characterized in that: The stator further comprises a shell (7), the shell (7) being sleeved on the outer side of the second brush body (5), a notch (8) being formed between the shell (7) and the connecting plate (6), the notch (8) being connected to the stator end wire outlet (5-1-1) and forming a stator end wire channel (9).

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