Slip ring and motor

Abstract

The utility model relates to a slip ring and a motor. The slip ring comprises a rotor, and the rotor comprises an electric brush substrate and a plurality of brush wires electrically connected to the electric brush substrate. The stator comprises annular sliding ways, insulating parts and transmission wires, the annular sliding ways are concentrically arranged at intervals, the adjacent annular sliding ways are arranged in an insulating mode through the insulating parts, the transmission wires are electrically connected with the annular sliding ways in a one-to-one correspondence mode, and each annular sliding way makes contact with at least one brush wire to achieve electric signal transmission; the brush wire comprises a bent contact section and a bent section connected with the bent contact section, the bent contact section is in electric contact with the annular sliding way, and the bent section warps upwards relative to the annular sliding way.

Description

Technical Field

[0001] The present disclosure relates to the technical field of terminals, and in particular, to a slip ring and a motor. Background Art

[0002] The disk slip ring is a deformed design of a conventional electromechanical slip ring. In order to reduce the probability that the brush wire jumps out of the ring and touches other channels by mistake, the existing disk slip ring usually increases the size of the insulating parts in the radial direction, so as to widen the distance between adjacent channels. However, this method is not conducive to the miniaturization of the slip ring. Summary of the Utility Model

[0003] The present disclosure provides a slip ring to solve the deficiencies in the related art.

[0004] According to an embodiment of the present disclosure, there is provided a slip ring and a motor, including:

[0005] A rotor, the rotor includes a brush substrate and a plurality of brush wires electrically connected to the brush substrate;

[0006] A stator, the stator includes an annular channel, an insulating part and a transmission wire. A plurality of annular channels are concentric and spaced apart, and adjacent annular channels are insulated from each other by the insulating part. The transmission wire is electrically connected to the annular channel in a one-to-one correspondence, and each annular channel is in contact with at least one brush wire to realize electrical signal transmission;

[0007] The brush wire includes a bent contact section and a bent section connected to the bent contact section. The bent contact section is in electrical contact with the annular channel, and the bent section is upturned relative to the annular channel.

[0008] Optionally, the projection of the bent section in the plane of the annular channel along the axial direction of the slip ring is tangent to the annular channel.

[0009] Optionally, the bent section forms an angle greater than or equal to 20° and less than or equal to 45° with the axial direction of the annular channel.

[0010] Optionally, the bent contact section includes one or more contact areas.

[0011] Optionally, the brush wire further includes a flat section and an inclined section. The flat section is electrically connected to the brush substrate, and the inclined section connects the flat section and the bent contact section;

[0012] The inclined section is inclined relative to the axial direction of the slip ring.

[0013] Optionally, the same annular channel is in contact with at least two brush wires respectively.

[0014] Optionally, the same annular slideway contacts two brush wires respectively, and the central angle formed by connecting the two contact points to the center of the annular slideway is 180°.

[0015] Optionally, the stator further includes a hollow annular bracket, and the hollow annular bracket includes a wire through-hole that is internally and externally connected;

[0016] Each of the transmission wires is electrically connected to the corresponding annular slideway through the wire through-hole.

[0017] Optionally, each of the annular slideways includes a wire groove, and the wire grooves of the plurality of annular slideways are correspondingly arranged;

[0018] In the radially inward direction of the annular slideway, the number of transmission wires passing through the wire groove decreases.

[0019] Optionally, the transmission wire is electrically connected to the side of the annular slideway facing away from the brush wire;

[0020] The insulating member fills the gap between the hollow annular bracket and the outermost annular slideway, and the insulating member forms a seal on the side of the annular slideway facing away from the brush wire.

[0021] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0022] As can be seen from the above embodiments, on the one hand, the present disclosure can contact the bending contact section with the annular slideway, which is beneficial to designing the contact area between each annular slideway and the corresponding brush wire to be consistent by designing the area of the bending contact section, thereby improving the consistency of signal transmission. On the other hand, the bending section warps upward, which can reduce the probability of the brush wire jumping to other annular slideways by mistake without increasing the radial dimension.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0025] Figure 1 is a schematic cross-sectional view of a slip ring shown according to an exemplary embodiment.

[0026] Figure 2 is a schematic cross-sectional view of a stator shown according to an exemplary embodiment.

[0027] Figure 3 is an exploded schematic view of a stator shown according to an exemplary embodiment.

[0028] Figure 4 It is a schematic diagram of the contact between an annular slideway and brush filaments shown according to an exemplary embodiment.

[0029] Figure 5 It is a schematic cross-sectional view of brush filaments shown according to an exemplary embodiment.

[0030] Figure 6 It is a partial exploded schematic diagram of a stator shown according to an exemplary embodiment. Detailed implementation manners

[0031] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0032] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0034] Figure 1 It is a schematic cross-sectional diagram of a slip ring shown according to an exemplary embodiment. Figure 2 It is a schematic cross-sectional view of a stator shown according to an exemplary embodiment. Figure 3 It is an exploded schematic diagram of a stator shown according to an exemplary embodiment. As Figures 1-3As shown, the slip ring includes a rotor 1 and a stator 2. The rotor 1 includes a brush substrate 11 and multiple brush wires 12 electrically connected to the brush substrate 11. For example, the brush wires 12 can be soldered to the pads of the brush substrate 11 by soldering. The brush substrate 11 can be a conventional printed circuit board. Other electronic components can also be provided on the brush substrate 11. The electronic components can be used for related data processing or transmission of the slip ring, or the electronic components can also be related electronic devices for configuring the device with the slip ring, so as to realize the co-board design of the electronic devices, thereby improving the space utilization rate and helping to reduce the volume of the device configured with the slip ring.

[0035] The stator 2 includes an annular slideway 21, an insulating member 22, and transmission wires 23. A plurality of annular slideways 21 are concentrically arranged, and there is a gap between adjacent annular slideways 21. The adjacent annular slideways 21 are insulated by the insulating member 22 to prevent signal interference between each other. The transmission wires 23 are electrically connected to the annular slideways 21 in a one-to-one correspondence, and each annular slideway 21 is in contact with the brush wire 12. Based on this, during the rotation of the rotor 1, the brush wire 12 can make a circular motion on the annular slideway 21 along the track limitation of the annular slideway 21, so as to match the motion law of the rotor 1 and realize the transmission of electrical signals.

[0036] Among them, each annular slideway 21 is in electrical contact with at least one brush wire 12. For example, each annular slideway 21 is in electrical contact with multiple brush wires 12. For example, Figure 4 As shown, the same annular slideway 21 can be in contact with two brush wires 12 respectively, so as to realize the backup transmission of signals and reduce the probability of signal loss. In the same annular slideway 21, the central angles formed by the two brush wires 12 and the two contacts of the same annular slideway 21 with the center of the annular slideway 21 are 180°, which is convenient for processing and helps to increase the distance between the two brush wires 12 to reduce the probability of short circuit of the brush wires 12. For example, Figure 4 As shown, the two brush wires 12 in contact with the same annular slideway 21 are arranged in the radial direction of the annular slideway 21 in the opposite direction, or in other embodiments, the two brush wires 12 arranged in the radial direction of the annular slideway 21 in the opposite direction can also be arranged in the same direction, which is designed according to specific needs.

[0037] Such as Figure 5As shown, the brush filament 12 includes a curved contact section 121 and a bent section 122 connected to the curved contact section 121. The curved contact section 121 is in electrical contact with the annular slide 21, and the bent section 122 is tilted upward relative to the annular slide 21. Based on this, on the one hand, the contact between the curved contact section 121 and the annular slide 21 can help to design the contact area of each annular slide 21 and the corresponding brush filament 12 to be consistent by designing the area of the curved contact section, thereby improving the consistency of signal transmission. On the other hand, the upward tilt of the bent section 122 can reduce the probability of the brush filament 12 jumping the ring and accidentally touching other annular slides 21 without increasing the radial dimension. In some embodiments, the projection of the bent section 122 in the plane of the annular slide 21 along the axial direction of the slip ring is tangent to the annular slide 21, which helps to simplify the process flow of the slip ring and prevent accidental contact with other annular slides. In some other embodiments, the bent section 122 forms an angle greater than or equal to 20° and less than or equal to 45° with the axial direction of the annular slideway 21, so that the bent section 122 extends upward as far as possible relative to the annular slideway 21 without contacting the rotor 1, thereby reducing the probability of contact with other adjacent annular slideways 21. The brush filaments 12 can be made of precious metal.

[0038] In the above embodiments, the curved contact segment 121 may include a single contact area, such as Figure 2 As shown, the contact area has a V-shaped structure. Alternatively, in other embodiments, the curved contact segment 121 may include multiple contact areas, such as a W-shaped structure, so that even after a single contact area wears out, signal transmission stability can still be maintained. For example, a single contact area may have a circular chamfer, such as an R0.2 circular chamfer or an R0.3 circular chamfer. Specific designs are based on needs and are not limited in this disclosure.

[0039] Furthermore, the brush filament 12 also includes a flat section 123 and an inclined section 124. The flat section 123 is electrically connected to the brush substrate 11, for example, it can be fixed and electrically contacted by welding; the inclined section 124 connects the flat section 123 and the curved contact section 121, and the inclined section 124 is tilted relative to the axial direction of the slip ring. This is conducive to reducing the axial height of the brush filament 12, thereby reducing the axial height of the slip ring, which is conducive to the miniaturization of the slip ring. For example, in some embodiments, based on the design of the six-ring slideway 21, the height of the slip ring can be designed to be 4mm, and the radial diameter can be 14mm. The flat section 123 and the inclined section 124 can be connected by an arc segment, for example, by an arc chamfer of R1mm; or the flat section 123 and the inclined section 124 can be connected in a manner similar to two line segments, which is not limited by the present disclosure.

[0040] Among them, the height of the brush filaments 12 in the axial direction of the annular slideway 21 can be between 140 mm and 160 mm. For example, the height of the brush filaments 12 can be 148 mm, with an error within the range of ±0.005 m. The included angle formed between the inclined section 124 and the flat section 123 can be adaptively designed according to the axial dimension and radial dimension of the slip ring. The included angle formed between the inclined section 124 and the bent section 122 is adaptively designed according to the contact area between the bending contact section 121 and the annular slideway 21. For example, when the contact area is relatively large, the included angle can be designed to be relatively large; when the contact area is relatively small, the included angle can be designed to be relatively small.

[0041] In each of the above embodiments, as Figure 2 , Figure 3 and Figure 6 shown, the stator 2 further includes a hollow annular bracket 24, and the hollow annular bracket 24 includes a wire through-hole 241 communicating the inside and the outside. Each transmission wire 23 is electrically connected to the corresponding annular slideway 21 through the wire through-hole 241. For example, in this application, taking the stator 2 including six annular slideways 21 as an example, the stator 2 includes six transmission wires 23, and the six transmission wires 23 all pass through the wire through-holes 241 and are electrically connected to the six annular slideways 21 in a one-to-one correspondence. This is beneficial for making multiple transmission wires into a wire harness, avoiding wire harness redundancy, and being beneficial for the regularity of the slip ring. Here, only the example of the stator 2 including six annular slideways 21 is used for illustration. In other embodiments, the stator 2 may also include other numbers of annular slideways 21, which will not be elaborated here one by one.

[0042] Furthermore, each annular slideway 21 includes a wire groove 211, and the wire grooves 211 of multiple annular slideways 21 are correspondingly arranged; that is, the multiple wire grooves 211 are arranged side by side in the same radial direction. And, in the direction of the annular slideway 21 radially inward, that is, the direction pointing to the center of the circle, the number of transmission wires 23 passing through the multiple wire grooves 211 decreases. For example Figure 6 shown, in the direction from the outermost to the innermost, the first wire groove 211 passes through six transmission wires 23, the second wire groove 211 passes through five transmission wires 23, and so on in decreasing order. The wire harness is regular and easy to assemble.

[0043] In each of the above embodiments, the transmission wire 23 is electrically connected to the side of the annular slideway 21 facing away from the brush filaments 12; taking the side of the annular slideway 21 electrically connected to the brush filaments 12 as the front, then the transmission wire 23 is in electrical contact with the back of the annular slideway 21; the insulating member 22 fills the gap between the hollow annular bracket 24 and the outermost annular slideway 21, and the insulating member 22 forms a seal on the side of the annular slideway 21 facing away from the brush filaments 12. That is Figure 2 shown, the seal can be achieved through the connection between the insulating member 22 and the hollow annular bracket 24 below the annular slideway 21, thereby improving the sealing performance of the slip ring.

[0044] Regarding the structure of the hollow ring-shaped bracket 24, the hollow ring-shaped bracket 24 and the annular slideway 21 are independently formed. Compared with the solution of arranging the annular slideway 21 on the hollow ring-shaped bracket 24, it is beneficial to increase the thickness of the annular slideway 21, and a material with high wear resistance can be selected through material selection, thereby improving the electrical contact stability between the annular slideway 21 and the brush wire 12. During the processing stage, each annular slideway 21 can be fixed to the inner side of the hollow ring-shaped bracket 24 through a fixture, and then the epoxy resin glue is used to pour and seal each annular slideway 21 in the hollow ring-shaped bracket 24. After the epoxy resin glue is cured, an insulating part 22 is formed, and the special fixing tooling is removed. Using epoxy resin material to support the insulating part 22 is beneficial to utilize the high-temperature resistance of the epoxy resin material and expand the application scenarios of the slip ring. Since the hollow ring-shaped bracket 24 and the annular slideway 21 are connected by epoxy resin glue, there may be some unevenness after forming. Therefore, a high-precision contact surface can be formed through one or multiple precision machining processes to ensure good contact reliability. The hollow ring-shaped bracket 24 can be processed and supported by copper alloy material, and the hollow ring-shaped bracket 24 can be protected by a gold plating process to prevent oxidation.

[0045] Based on the technical solution of the present disclosure, a motor is further provided. The motor includes the slip ring described in any one of the foregoing embodiments. The motor can be a synchronous motor or an asynchronous motor.

[0046] After considering the specification and practicing the disclosure herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0047] It should be understood that the present disclosure is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A slip ring, characterized in that, include: a rotor comprising a brush substrate and a plurality of brush filaments electrically connected to the brush substrate; The stator includes an annular slideway, an insulating member, and a transmission wire. The multiple annular slideways are concentric and spaced apart. Adjacent annular slideways are insulated by the insulating member. The transmission wire is electrically connected to the annular slideways in a one-to-one correspondence. Each annular slideway contacts at least one brush wire to achieve electrical signal transmission. The brush filament includes a curved contact section and a bent section connected to the curved contact section. The curved contact section is in electrical contact with the annular slideway, and the bent section is tilted upward relative to the annular slideway.

2. The slip ring according to claim 1, wherein The projection of the bent section along the axial direction of the slip ring in the plane of the annular slideway is tangent to the annular slideway.

3. The slip ring according to claim 1, wherein, The bending section forms an angle with the axial direction of the annular slideway that is greater than or equal to 20° and less than or equal to 45°.

4. The slip ring according to claim 1, characterized in that, The curved contact section includes one or more contact areas.

5. The slip ring according to claim 1, characterized in that, The brush filament further comprises a flat section and an inclined section, wherein the flat section is electrically connected to the brush substrate, and the inclined section connects the flat section and the curved contact section; The inclined section is arranged to be inclined relative to the axial direction of the slip ring.

6. The slip ring according to claim 1, wherein The same annular slideway contacts two brush filaments respectively, and the central angle of a line segment formed by connecting the two contact points and the center of the annular slideway is 180°.

7. The slip ring according to claim 1, wherein, The stator further includes a hollow annular bracket, and the hollow annular bracket includes a wire through hole communicating with the inside and outside; Each of the transmission wires is electrically connected to the corresponding annular slideway through the wire via hole.

8. The slip ring according to claim 7, characterized in that, Each of the annular slideways includes a wire groove, and the wire grooves of the plurality of annular slideways are correspondingly arranged; In the radially inward direction of the annular slideway, the number of transmission wires passing through the wire groove decreases.

9. The slip ring according to claim 8, characterized in that, The transmission wire is electrically connected to a side of the annular slideway away from the brush wire; The insulating member fills the gap between the hollow annular support and the outermost annular slideway, and the insulating member forms a seal on a side of the annular slideway away from the brush filaments.

10. A motor, characterized in that, The slip ring comprises the slip ring according to any one of claims 1 to 9.

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