Multi-channel conductive slip ring

Abstract

The utility model discloses a multichannel conductive slip ring, which comprises a shell, a stator, a rotor and a conductive medium, the stator comprises a plurality of stator conductors and a stator insulation sleeve, the rotor comprises a plurality of rotor conductors and a rotor insulation sleeve, a cavity is formed between the stator insulation sleeve and the rotor insulation sleeve, the conductive medium is filled in the cavity, and the shell is fixed outside the stator; the motor further comprises a rotor sleeve, a plurality of rotor leads and a plurality of stator leads, one end of each rotor conductor extends into the rotor sleeve, one end of each rotor lead extends into the rotor sleeve and abuts against the corresponding rotor conductor, and the rotor conductors and the rotor leads are fixed through first pouring sealant. One end, far away from the rotor, of each stator conductor extends into the extension part of the outermost stator insulation sleeve, one end of each stator lead extends into the extension part and abuts against the corresponding stator conductor, and the stator conductors and the stator leads are fixed through a second pouring sealant. The utility model has the advantages that the structure is more stable and reliable, the sealing performance is better, and the safety performance is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to conductive slip ring technical field, in particular to a kind of multi-channel conductive slip ring. BACKGROUND

[0002] Conductive slip ring is also called current collector ring, or called rotating joint, rotating electrical interface, slip ring, current collector ring, return flow ring, coil, commutator, adapter, is the realization of two relative rotation mechanism's image, data signal and power transmission precision power transmission device.Especially suitable for unrestricted continuous rotation, while need to transmit power or data from fixed position to rotating position place.The existing conductive slip ring generally adopts carbon brush slip ring, but carbon brush slip ring can produce abrasion when rotating, affect the precision and reliability of connection.

[0003] To overcome the above-mentioned defects, the utility model discloses a mercury slip ring with mercury as conductive medium to fill stator and rotor between in liquid state, under the condition that stator and rotor relative motion, corresponding metal conductor is kept connected, directly through mercury to conductive transmission current when rotating, no abrasion between stator and rotor, transmission precision is high, stability is good.

[0004] But the structure also has the following defects: (1), the metal conductor of the structure is metal conductive sheet, directly extended to the cavity filled with mercury from outside, long-term use, metal conductive sheet is prone to loose, leading to poor contact or mercury leakage occurs; (2), in humid environment, external moisture is easy to enter the shell inside through bearing, easy to cause the insulation performance of insulating part to decline and the oxidation condition of metal conductive sheet occurs, and when internal mercury leakage occurs, mercury will directly flow to outside through bearing, poor safety performance. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of multi-channel conductive slip ring, the utility model has the advantages of more stable and reliable structure, better sealing and higher safety performance.

[0006] To achieve the above object, the utility model provides the following technical scheme: Multi -channel conductive slip ring, including shell, stator, rotor and conductive medium, the stator includes a plurality of stator conductors and a plurality of concentricly arranged stator insulating sleeve for each stator conductor is separated from each other, the rotor includes a plurality of rotor conductors and a plurality of concentricly arranged rotor insulating sleeve for each rotor is separated from each other, the stator and rotor are connected oppositely, and the stator insulating sleeve and the rotor insulating sleeve are connected oppositely to form a plurality of cavities for separating the corresponding stator conductor and rotor conductor, the conductive medium is filled in the cavity, the shell is fixed outside the stator, and the rotor is provided with a bearing between the rotor and the shell, still including rotor sleeve, a plurality of rotor lead and a plurality of stator lead, the end of the rotor conductor away from the stator all extends into the rotor sleeve, one end of the rotor lead extends into the rotor sleeve and abuts against the corresponding rotor conductor, and the first filling sealant for fixing the rotor conductor and the rotor lead together is arranged in the rotor sleeve, the end of the stator conductor away from the rotor all extends into the extension part, one end of the stator lead extends into the extension part and abuts against the corresponding stator conductor, and the second filling sealant for fixing the stator conductor and the stator lead together is arranged in the extension part.

[0007] By adopting the above technical scheme, the rotor lead abuts against the corresponding rotor conductor, the stator lead abuts against the corresponding stator conductor, and each is fixed by the filling sealant, the rotor conductor and the stator conductor are not exposed to the outside, are not easily affected by the outside ring, have good fixing effect, the structure is more stable and reliable, leakage is not easily generated, and the utility model has the advantages of higher safety.

[0008] The utility model further sets up, the rotor insulating sleeve and stator insulating sleeve between the clamping sealing assembly.

[0009] By adopting the above technical scheme, the sealing property between the two can be guaranteed, the conductive medium can be sealed in the corresponding cavity, and the conductive medium is prevented from flowing into the adjacent cavity or short-circuiting with the adjacent channel.

[0010] The utility model further sets up, the sealing assembly includes the elastic piece and the sealing gasket that are sequentially arranged between the rotor insulating sleeve and the location insulating sleeve along the axial direction.

[0011] By adopting the above technical scheme, the elastic piece and the sealing gasket are combined, the sealing property between the rotor insulating sleeve and the stator insulating sleeve is greatly improved, even if the rotor insulating sleeve is abraded later, the elastic piece can compensate the increased gap, and leakage is avoided.

[0012] The utility model further sets up, bearing set in the outer periphery of the outermost rotor insulation sleeve, and the outer periphery of the rotor insulation sleeve is equipped with the first limit step, the inner end of the bearing inner ring is in contact with the first limit step, the outer end of the bearing inner ring is in contact with the inner end of the rotor sleeve, the outer periphery of the outermost stator insulation sleeve of stator is equipped with the limit flange, and the limit flange is in contact with the inner end surface of the shell.

[0013] Through the above technical scheme, the stator and the rotor can be positioned and installed, and the two are inserted and matched in place.

[0014] The utility model further sets up, still include the secondary sealing piece of annular structure, the secondary sealing piece includes annular seal part and the taper seal part of setting in annular seal part inner periphery, the second limit step for supporting the bearing outer ring is equipped in the shell inner side, the annular seal part is clamped between the second limit step and the bearing outer ring, and the inner circle surface of the taper seal part is in contact with the outer periphery of the outermost rotor insulation sleeve.

[0015] Through the above technical scheme, the secondary sealing piece can avoid the water vapor and dust outside the shell from entering the shell and affecting the insulation sleeve and the conductor, and can block the leakage of the conductive medium between the stator and the rotor, so as to avoid the exosmosis of the conductive medium and cause safety accidents and damage the environment.

[0016] The utility model further sets up, still include the pressure cover, the outer circle surface of the pressure cover is inlaid with the inner circle surface of the shell upper end opening, the annular flange that extends to the outer periphery and is in contact with the upper end of the shell is equipped at the outer end of the pressure cover, a plurality of positioning convex parts in hemispherical shape are equipped on the outer circle surface of the pressure cover, a plurality of positioning concave parts that are matched with the positioning convex parts are equipped on the inner circle surface of the shell.

[0017] Through the above technical scheme, the bearing is reinforced by the pressure cover, so that the bearing is prevented from coming out of the shell during use, and the stability of the structure is further improved.

[0018] The utility model further sets up, the upper end of the shell is equipped with a plurality of guide grooves that extend along the vertical direction and are communicated with the corresponding positioning concave parts, and the depth of the guide grooves is less than the depth of the positioning concave parts.

[0019] Through the above technical scheme, the pressure cover is inserted into the shell and positioned, and the disassembly is more convenient. ACCURACY

[0020] Figure 1 It is the structural schematic diagram of the whole embodiment 1;

[0021] Figure 2 It is Figure 1 The enlarged structural schematic diagram of A part in the middle;

[0022] Figure 3 Structure diagram of the whole of embodiment 2;

[0023] Figure 4 Structure diagram of the shell of embodiment 2.

[0024] In the figure: 1, shell; 2, stator; 3, rotor; 4, conductive medium; 5, stator conductor; 6, stator insulation sleeve; 7, rotor conductor; 8, rotor insulation sleeve; 9, cavity; 10, bearing; 11, rotor sleeve; 12, rotor lead; 13, stator lead; 14, first potting adhesive; 15, extension; 16, second potting adhesive; 17, sealing assembly; 18, elastic member; 19, sealing gasket; 20, first limiting step; 21, limiting flange; 22, secondary sealing member; 23, annular sealing portion; 24, conical sealing portion; 25, second limiting step; 26, pressing sleeve; 27, annular flange; 28, positioning protrusion; 29, positioning recess; 30, guide groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiment 1: as shown in the accompanying Figure 1 and the accompanying Figure 2The multi-channel conductive slip ring shown includes a housing 1, a stator 2, a rotor 3, and a conductive medium 4. The stator 2 includes multiple stator conductors 5 and multiple concentrically arranged stator insulating sleeves 6 that separate each stator conductor 5 from the others. The stator conductors 5 have a cylindrical structure. The rotor 3 includes multiple rotor conductors 7 and multiple concentrically arranged rotor insulating sleeves 8 that separate each rotor conductor 3 from the others. The rotor conductors 7 have a cylindrical structure. The stator 2 and rotor 3 are connected relative to each other. The stator insulating sleeves 6 and rotor insulating sleeves 8 are mated together to form multiple cavities 9 that separate the corresponding stator conductors 5 and rotor conductors 7. Each cavity 9 is independent of the others. The conductive medium 4 fills the cavities 9. The conductive medium 4 can be a liquid conductive metal such as mercury or gallium alloy. The housing 1 is fixed outside the stator 2. The rotor 3 is connected to the housing 1. A bearing 10 is provided between them; the conductive slip ring also includes a rotor sleeve 11, a plurality of rotor leads 12 and a plurality of stator leads 13. The ends of the rotor conductors 7 away from the stator 2 all extend into the rotor sleeve 11, and one end of each rotor lead 12 extends into the rotor sleeve 11 and abuts against the corresponding rotor conductor 7. The rotor sleeve 11 is provided with a first potting compound 14 for fixing the rotor conductors 7 and rotor leads 12 together. The outermost stator insulating sleeve 6 is provided with an extension 15 at the end away from the rotor 3. The ends of the stator conductors 5 away from the rotor 3 all extend into the extension 15, and one end of each stator lead 13 extends into the extension 15 and abuts against the corresponding stator conductor 5. The extension 15 is provided with a second potting compound 16 for fixing the stator conductors 5 and stator leads 13 together. The rotor lead 12 abuts against the corresponding rotor conductor 7, and the stator lead 13 abuts against the corresponding stator conductor 5. Both are fixed with potting compound. Neither the rotor conductor 7 nor the stator conductor 5 is exposed to the outside, so they are not easily affected by external rings. The fixing effect is good, the structure is more stable and reliable, and leakage is less likely to occur, which has the advantage of higher safety.

[0027] As attached Figure 1 and attached Figure 2 As shown, a sealing assembly 17 is sandwiched between the rotor insulating sleeve 8 and the stator insulating sleeve 6. This ensures the airtightness between the two, ensuring that the conductive medium 4 is sealed in the corresponding cavity 9, preventing it from flowing into the adjacent cavity 9 or short-circuiting with the adjacent channel.

[0028] As attached Figure 1 and attached Figure 2As shown, the sealing assembly 17 includes an elastic element 18 and a sealing gasket 19 sequentially disposed axially between the rotor insulating sleeve 8 and the positioning insulating sleeve. The elastic element 18 is made of an elastic material, such as rubber, spring steel, or elastic plastic. The combination of the elastic element 18 and the sealing gasket 19 significantly improves the sealing performance between the rotor insulating sleeve 8 and the stator insulating sleeve 6. Even if the rotor insulating sleeve 8 experiences wear later, the elastic element 18 can compensate for the increased gap, preventing leakage.

[0029] As attached Figure 1 and attached Figure 2 As shown, the bearing 10 is sleeved on the outermost rotor insulating sleeve 8, and the outer periphery of the rotor insulating sleeve 8 is provided with a first limiting step 20. The inner end of the inner ring of the bearing 10 abuts against the first limiting step 20, and the outer end of the inner ring of the bearing 10 abuts against the inner end of the rotor sleeve 11. The outermost stator insulating sleeve 6 on the stator 2 is provided with a limiting flange 21 on its outer periphery, and the limiting flange 21 abuts against the inner end face of the outer shell 1. This design allows for the positioning and installation of the stator 2 and the rotor 3, ensuring that they are properly inserted and fitted.

[0030] As attached Figure 1 and attached Figure 2 As shown, the conductive slip ring also includes a secondary seal 22 with an annular structure. The secondary seal 22 includes an annular sealing portion 23 and a conical sealing portion 24 disposed on the inner circumference of the annular sealing portion 23. The two are an integral structure. The inner side of the outer shell 1 is provided with a second limiting step 25 for supporting the outer ring of the bearing 10. The annular sealing portion 23 is sandwiched between the second limiting step 25 and the outer ring of the bearing 10. The inner circular surface of the conical sealing portion 24 abuts against the outer circumference of the outermost rotor insulating sleeve 8. This secondary seal 22 can prevent external moisture and dust from entering the interior of the outer shell 1 and affecting the insulating sleeves and conductors. It can also block the leakage of conductive medium 4 between the stator 2 and the rotor 3, preventing the conductive medium 4 from seeping out and causing safety accidents and environmental damage.

[0031] Example 2: As shown in the attached document Figure 3 and attached Figure 4 As shown, based on Embodiment 1, the conductive slip ring further includes a pressure sleeve 26. The outer circular surface of the pressure sleeve 26 is fitted with the inner circular surface of the opening at the upper end of the outer shell 1. The outer end of the pressure sleeve 26 has an annular protrusion 27 extending outward and abutting against the upper end of the outer shell 1. The outer circular surface of the pressure sleeve 26 has multiple hemispherical positioning protrusions 28, and the inner circular surface of the outer shell 1 has multiple positioning recesses 29 that fit with the positioning protrusions 28. By setting the pressure sleeve 26 to reinforce the bearing 10, the bearing 10 is prevented from falling out of the outer shell 1 during use, further improving the stability of the structure.

[0032] As attached Figure 3and attached Figure 4 As shown, the upper end of the outer casing 1 is provided with multiple guide grooves 30 extending vertically and communicating with corresponding positioning recesses 29. The depth of the guide grooves 30 is less than the depth of the positioning recesses 29. This facilitates the insertion and positioning of the pressure sleeve 26 into the outer casing 1, making assembly and disassembly more convenient. Alternatively, the guide grooves 30 can also be a combination of vertical and circumferential grooves, i.e., the pressure sleeve 26 is pressed into the outer casing 1 and then rotated, achieving the installation of the pressure sleeve 26 through two actions.

Claims

1. A multi-channel conductive slip ring, comprising a housing (1), a stator (2), a rotor (3), and a conductive medium (4), wherein the stator (2) comprises a plurality of stator conductors (5) and a plurality of stator insulating sleeves (6) arranged concentrically to separate each stator conductor (5) from each other, the rotor (3) comprises a plurality of rotor conductors (7) and a plurality of rotor insulating sleeves (8) arranged concentrically to separate each rotor (3) from each other, the stator (2) and the rotor (3) are connected relative to each other, the stator insulating sleeves (6) and the rotor insulating sleeves (8) are mated together to form a plurality of cavities (9) separating the corresponding stator conductors (5) and rotor conductors (7), the conductive medium (4) is filled in the cavities (9), the housing (1) is fixed outside the stator (2), and a bearing (10) is provided between the rotor (3) and the housing (1); characterized in that: It also includes a rotor sleeve (11), multiple rotor leads (12) and multiple stator leads (13). The ends of the rotor conductors (7) away from the stator (2) all extend into the rotor sleeve (11). One end of the rotor lead (12) extends into the rotor sleeve (11) and abuts against the corresponding rotor conductor (7). The rotor sleeve (11) is provided with a first potting compound (14) for fixing the rotor conductor (7) and the rotor lead (12) together. The outermost stator insulating sleeve (6) is provided with an extension (15) at the end away from the rotor (3). The ends of the stator conductors (5) away from the rotor (3) all extend into the extension (15). One end of the stator lead (13) extends into the extension (15) and abuts against the corresponding stator conductor (5). The extension (15) is provided with a second potting compound (16) for fixing the stator conductor (5) and the stator lead (13) together.

2. The multi-channel conductive slip ring according to claim 1, characterized in that: A sealing assembly (17) is sandwiched between the rotor insulating sleeve (8) and the stator insulating sleeve (6).

3. The multi-channel conductive slip ring according to claim 2, characterized in that: The sealing assembly (17) includes an elastic element (18) and a sealing gasket (19) arranged sequentially along the axial direction between the rotor insulating sleeve (8) and the positioning insulating sleeve.

4. The multi-channel conductive slip ring according to claim 1, characterized in that: The bearing (10) is sleeved on the outer periphery of the outermost rotor insulating sleeve (8), and the outer periphery of the rotor insulating sleeve (8) is provided with a first limiting step (20). The inner end of the inner ring of the bearing (10) abuts against the first limiting step (20), and the outer end of the inner ring of the bearing (10) abuts against the inner end of the rotor sleeve (11). The outer periphery of the outermost stator insulating sleeve (6) on the stator (2) is provided with a limiting flange (21), and the limiting flange (21) abuts against the inner end face of the outer shell (1).

5. The multi-channel conductive slip ring according to claim 4, characterized in that: It also includes a secondary seal (22) with an annular structure. The secondary seal (22) includes an annular sealing part (23) and a conical sealing part (24) disposed on the inner circumference of the annular sealing part (23). The inner side of the outer shell (1) is provided with a second limiting step (25) for supporting the outer ring of the bearing (10). The annular sealing part (23) is sandwiched between the second limiting step (25) and the outer ring of the bearing (10). The inner circular surface of the conical sealing part (24) abuts against the outer circumference of the outermost rotor insulating sleeve (8).

6. The multi-channel conductive slip ring according to claim 4, characterized in that: It also includes a pressure sleeve (26), the outer circular surface of which fits against the inner circular surface of the upper opening of the outer shell (1). The outer end of the pressure sleeve (26) is provided with an annular protrusion (27) that extends outward and abuts against the upper end of the outer shell (1). The outer circular surface of the pressure sleeve (26) is provided with a plurality of hemispherical positioning protrusions (28), and the inner circular surface of the outer shell (1) is provided with a plurality of positioning recesses (29) that fit with the positioning protrusions (28).

7. The multi-channel conductive slip ring according to claim 6, characterized in that: The upper end of the outer shell (1) is provided with a plurality of guide grooves (30) that extend vertically and communicate with the corresponding positioning recesses (29), and the depth of the guide grooves (30) is less than the depth of the positioning recesses (29).

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