Electric rotary connector

Abstract

The invention provides an electric rotary connector which comprises a rotor part with a conducting ring, an outer contact assembly arranged on the outer side of the rotor part and a shell arranged on the outer side of the outer contact assembly in a sleeving mode. The outer contact assembly is provided with a supporting structure used for covering the outer side of the rotor part and a contact piece which is in contact conduction with the conducting ring, and an inner contact part is arranged in the rotor part. By arranging the inner contact part, a circuit is led out from the interior of the rotor part, the structure is simple and orderly, the defect that wires need to be welded one by one is overcome, and the problems that a traditional wiring scheme is complex in circuit and difficult in wiring are solved; according to the invention, an independent supporting part is omitted, the supporting structure and the external contact assembly are arranged into a whole, the assembly of the stator can be completed only by splicing the assemblies during assembly, and the assembly is more convenient; and all the contact elements are integrated into a whole through the outer contact assembly and do not need to be assembled one by one, so that the problems that the filament-shaped contact elements are difficult to assemble, low in efficiency and easy to deform are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy and signal transmission, and in particular to a connector. Background Art

[0002] The present invention relates to the field of electric energy and signal transmission technology. Electric slip rings are also called collector rings, slip rings, collector rings, and collector rings. They can be used in electromechanical systems that can transmit power and signals from a fixed position to a rotating position while rotating continuously. They are precision devices that realize the transmission of current, various signals, images, and gas and liquid between two pairs of relatively rotating devices. The present invention simplifies the product structure through modular design ideas.

[0003] like Figures 1 to 4 As shown, it is the structure of the existing rotary connector. The rotary connector is composed of an upper support plate component 6, a lower support plate component 7, an existing rotor component 8 arranged between the upper support plate component 6 and the lower support plate component 7, and an existing shell 9 sleeved on the outer side of the upper support plate component 6 and the lower support plate component 7. The upper support plate component 6 and the lower support plate component 7 both include an existing support frame 10, and the existing support frame 10 is provided with a perforation for passing a plurality of U-shaped brush wires 11, the opening end of the U-shaped structure is inserted into the inner side of the existing support frame 10, and the other end is located on the outer side of the existing support frame 10, and the outer side of the existing support frame 10 is also provided with a plurality of external wires 12, and the plurality of external wires 12 are welded and connected to the plurality of brush wires 11 one by one. The rotary connector product is small in size, difficult to make wires, and difficult to realize automation, and requires a lot of manpower for manual production and assembly.

[0004] Among them, the stator (brush wire component) structure of the existing rotary connector is as follows Figure 1 As shown, the specific shortcomings are: (1) The brush wire 11 is extremely thin, which is not only difficult to assemble, but also very easy to damage the brush wire 11 during the process of inserting the brush wire 11 into the support and welding the brush wire 11 to the wire. The whole process is time-consuming, has a low pass rate and requires high operating ability of the personnel.

[0005] (2) The operation process of the existing rotor component 8 is complicated. The inner conductor 13 needs to be welded inside the conductive ring of the existing rotor component 8. The diameter and width of the conductive ring are relatively small. While ensuring that the welding is reliable, the size of the welding point and the wire stripping must be strictly controlled to avoid short circuits and breakdowns between different circuits. Therefore, the operation requirements are extremely high.

[0006] (3) After the conductive ring welding is completed, the rotating shaft, conductive ring (with wire), and insulating ring of the existing rotor component 8 are assembled, and the inner wire 13 is passed through the front conductive ring and insulating ring in sequence, and finally passed through the rotating shaft. This process is difficult to automate, and due to the limited space inside the ring and the rotating shaft, the conductive ring closer to the back is more difficult to assemble.

[0007] The Chinese invention application with a publication date of 2023-01-13 and a publication number of CN115603137A discloses a brush structure, a brush and a conductive slip ring. The brush structure includes a brush holder and a brush wire assembly. The brush wire assembly includes a conductor plate and at least one group of brush wires. The conductor plate is detachably connected to the brush holder. Each group of the above-mentioned brush wires includes two groups of brush wires. One end of each group of brush wires is welded to the conductor plate, and the other end of each group of brush wires extends into the brush holder, and the two groups of brush wires in each group of brush wires are connected through the conductor plate. When assembling the brush, by providing a conductor plate separated from the brush holder, it is avoided that the operator directly fixes the brush wire on the brush holder. The brush wire is welded to the detachable conductor plate. Compared with operating directly on the brush holder, the conductor plate is unobstructed and has a more flexible operating space. At the same time, the brush wires no longer need to be inserted one by one into the wiring holes of the one-piece brush holder. The time taken to weld the brush wires to the conductor plate is much less than the time taken to perforate the brush wires in the brush holder. However, this application still requires welding the wires in the rotor component one by one before assembling the product. It is inevitable that each wire needs to be handled individually during the transfer process, making the process more cumbersome and inefficient. Summary of the invention

[0008] In view of the above technical problems, the present invention proposes an electric rotary connector to solve the problem that the rotary connector in the prior art needs to weld the wires in the rotor component one by one before assembling the product, and the assembly process also requires each metal wire to be handled individually, resulting in a cumbersome process.

[0009] In order to achieve the above object, the technical solution of the present invention is achieved as follows: An electric rotary connector comprises a rotor component with a conductive ring, an external contact assembly arranged on the outside of the rotor component and a shell sleeved on the outside of the external contact assembly; the external contact assembly is provided with a supporting structure for covering the outside of the rotor component and a contact piece in contact with the conductive ring, and an internal contact component is provided in the rotor component.

[0010] The present invention omits a separate supporting component and instead integrates the supporting structure and the external contact assembly into a whole. During assembly, the stator can be assembled by simply assembling the components, which makes assembly more convenient. All contact pieces are integrated into a whole through the external contact assembly, and there is no need to assemble them one by one, thereby solving the problems of difficult assembly, low efficiency, and easy deformation of filamentary contact pieces. An internal contact component is provided to lead the circuit out from the inside of the rotor component, which has a simple and orderly structure, and not only avoids the disadvantage of having to weld the wires one by one, but also avoids the problems of complex lines and difficult wiring in traditional wiring schemes.

[0011] Furthermore, the inner contact component includes at least one inner contact unit, each of which includes an inner conductor and an insulator coated on the outside of the inner conductor, a spring structure connected to the inner conductor is provided on the outside of the insulator, and the inner conductor is connected to the conductive ring of the rotor component through the spring structure.

[0012] Furthermore, a protective structure cooperating with the spring sheet structure is provided on the inner contact component and / or the adjacent inner contact component and / or the rotor component to protect the spring sheet structure.

[0013] Furthermore, the protective structure includes a protective block arranged on the side of the inner contact unit, and the protective block is arranged in the gap between the spring structure and close to the spring structure; and the height of the protective block extending out of the insulator is less than the height of the spring structure extending out of the insulator so that the spring structure can contact and conduct with the inner side of the conductive ring.

[0014] Furthermore, the protective structure includes a protective strip arranged on the side of the inner contact unit, the protective strip extends to the side of the adjacent inner contact unit and is adjacent to the spring structure on the adjacent inner contact unit; and the height of the protective strip extending from the insulator is less than the height of the spring structure extending from the insulator so that the spring structure can contact and conduct with the inner side of the conductive ring.

[0015] Furthermore, the protection structure includes a protection plate arranged on the side of the inner contact unit, and a protection groove cooperating with the spring structure is provided on the protection plate; the spring structure protrudes outside the protection groove so that the spring structure can contact and conduct with the inner side of the conductive ring.

[0016] Furthermore, the protective structure includes a protective groove arranged on the insulator of the inner contact piece monomer or a limiting portion arranged on the rotor component; the spring sheet structure is embedded in the protective groove or the limiting portion is arranged close to the spring sheet structure, and the end of the spring sheet structure can extend out of the protective groove or the limiting portion is located on the side of the spring sheet structure so that the spring sheet structure can contact and conduct with the inner side of the conductive ring.

[0017] Furthermore, the external contact assembly also includes an insulating component, the contact piece is inserted into the insulating component, and the supporting structure is provided on the insulating component.

[0018] Furthermore, the external contact assembly includes at least two external contact monomers, which are evenly distributed on the outside of the rotor component in the circumferential direction, and the at least two external contact monomers can be assembled into an integral cover arranged on the outside of the rotor component.

[0019] Furthermore, a step hole matching with the rotor component is provided on the inner side of the insulating component; matching guide pins and / or guide holes are provided between adjacent insulating components.

[0020] Furthermore, a slotted body for inserting the inner contact part is provided in the rotor part, and the inner surface of the conductive ring is exposed in the slot of the slotted body so that the inner contact part is in contact and conduction with the conductive ring; a guide pin for connecting the printed circuit board is provided at the end of the slotted body.

[0021] Beneficial effects of the present invention: 1. The contact piece of the inner contact component of the present invention contacts the inner ring of the conductive ring of the rotor component, and the outer contact component contacts the outer ring of the conductive ring of the rotor component, and can perform relative rotational motion, so that the inner conductors of the rotating end and the stationary end can be connected while the rotor rotates; 2. The external contact of the present invention comprises a contact and an insulating component, and a supporting structure is provided on the insulating component, so that the external contact can be sleeved on the outer side of the rotor component and matched with the bearing, thereby simplifying the structure; 3. The present invention omits a separate supporting component and instead integrates the supporting structure and the external contact assembly into a whole. During assembly, the stator assembly can be completed by simply assembling the components, which makes assembly more convenient. In addition, all the contact pieces are integrated into a whole through the external contact assembly, and there is no need to assemble them one by one, thus solving the problems of difficult assembly, low efficiency, and easy deformation of filamentary contact pieces. 4. The contact piece and the insulating component of the present invention can be processed into a whole by strong assembly, bonding or injection molding, which can completely eliminate the matching gap between the parts and greatly improve the production and assembly accuracy; 5. The present invention can transmit electricity by contacting the contact piece with the conductive ring, which not only makes the assembly easier, but also eliminates the assembly gap of the external contact component and improves the assembly accuracy; 6. The inner contact part of the present invention is connected to the inside of the conductive ring of the rotor part through a spring structure, and the spring structure has elastic force to provide a holding force for the contact part; 7. The present invention provides a protective structure to protect the spring structure, so as to prevent the spring structure from being out of contact with the conductive ring after long-term use or being squeezed; 8. The present invention greatly improves the contact stability by arranging the contact piece in an eight-shaped symmetrical structure and providing elastic force in the contact direction when the contact piece contacts the conductive ring; 9. The present invention simplifies the product structure by modularizing the internal contact parts and the rotor parts. It does not need to assemble all parts one by one, but can rely on precise tooling molds, which simplifies the manufacturing process and improves the precision of parts. The structure is more intensive, which is convenient for product automation and installation. 10. The present invention protects the spring sheet structure by setting a limiter inside the rotor, or providing a protective structure on the inner contact component, or utilizing a matching structure between the inner contact component and the inside of the rotor, thereby improving the reliability of the spring sheet structure; 11. The contact pieces of the present invention no longer need to be inserted into the wiring holes of the integrally formed brush holder one by one. The contact pieces and the insulating plate adopt an integral structure or the time taken to weld the contact pieces to the insulating plate is much shorter than the time taken to perforate the brush wires to the brush holder, which greatly improves the production and assembly efficiency of the brushes; 12. The modular design of the present invention uses an inner conductor module to lead the rotating component out from the inside, which not only solves the problem of difficult wiring inside the slip ring and messy wiring, but also provides a more flexible interface. Not only traditional wiring can be performed at the interface between the inner contact component and the outer contact unit, but also printed circuit board welding can be performed, which greatly improves the modularity of the entire link and provides a new design solution for production automation in the field of rotary connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the exploded structure of an existing rotary connector; Figure 2 It is a structural schematic diagram of an upper external contact unit of an existing rotary connector; Figure 3 It is a schematic diagram of the exploded structure of the upper outer contact piece monomer of the existing rotary connector; Figure 4 It is a schematic cross-sectional structure diagram of a rotor component of an existing rotary connector; Figure 5 It is a cross-sectional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the explosion structure of the present invention; Figure 7 It is a schematic structural diagram of a rotor component of the present invention; Figure 8 It is a structural schematic diagram of the present invention and the printed circuit board; Fig. 9 It is a schematic structural diagram of an inner contact unit of the present invention; Fig.10 It is a schematic structural diagram of two inner contact monomers of embodiments 5 and 6 of the present invention; Fig.11 It is a schematic structural diagram of two inner contact monomers of Example 7 of the present invention; Fig.12 It is a schematic structural diagram of two inner contact monomers of Example 8 of the present invention; Fig.13 is a schematic structural diagram of an inner contact unit according to Embodiment 9 of the present invention; Fig.14 It is a schematic diagram of the matching structure between the spring structure of the inner contact component and the rotor component according to the tenth embodiment of the present invention; Fig.15 It is a schematic diagram of the matching structure between the spring structure of the inner contact component assembly and the rotor component according to the embodiment 11 of the present invention; Fig.16 It is a schematic diagram of the matching structure between the spring structure of the inner contact component assembly and the rotor component according to the embodiment 11 of the present invention; Fig.17 The structure of the external contact assembly of the present invention is schematically shown in FIG. Figure 1 ; Fig.18 The structure of the external contact assembly of the present invention is schematically shown in FIG. Figure 2 ; Fig.19 This is a schematic structural diagram of an external contact assembly according to Embodiment 15 of the present invention; Fig. 20 This is a schematic diagram of the structure of the external contact assembly of Example 15 of the present invention.

[0024] Reference numerals in the figures: 1. Shell, 2. Printed circuit board, 3. External contact assembly, 31. External contact member, 32. Support structure, 33. Insulating member, 34. Contact member, 35. Guide pin, 36. Guide hole, 4. Rotor member, 41. Rotating shaft, 42. Conductive ring, 43. Insulating ring, 44. Bearing, 45. Slotted slot, 46. Guide pin, 5. Internal contact member, 51. Internal conductor, 52. Positioning protrusion, 53. Spring sheet structure, 54. Insulator, 55. First protective plate, 56. Second protective plate, 57. Protective groove, 58. First internal contact member, 59. Second internal contact member, 510. Protective strip, 511. Protective block, 6. Upper support plate member, 7. Lower support plate member, 8. Existing rotor member, 9. Existing shell, 10. Existing support frame, 11. Brush wire, 12. External conductor, 13. Internal conductor. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 5 to 8As shown, an electric rotary connector according to Embodiment 1 of the present invention comprises a housing 1, an outer contact assembly 3, a rotor component 4 and an inner contact component 5, as shown in FIG. Figure 5 and Figure 6 As shown, the rotor component 4 is arranged on the inner side of the outer contact component 3, and the outer contact component 3 is provided with a support structure 32 for covering the outer side of the rotor component 4, so that the outer contact component 3 has a cavity for the rotor component 4 to be installed in the cavity. Among them, the rotor component 4 includes a conductive ring 42, and the outer contact component 3 is provided with a contact piece 34 that contacts and conducts with the conductive ring 42 of the rotor component 4. The housing 1 is sleeved on the outer side of the outer contact component 3. The inner contact component 5 is arranged inside the rotor component 4, and the inner contact component 5 is provided with an inner conductor 51 that communicates with the conductive ring 42. In this embodiment, as Figure 6 As shown, the inner contact component 5 is a modular structure provided with an inner conductor 51, that is, the inner contact component 5 is pre-set as a whole with a relatively regular appearance, which is not only convenient for assembly with other accessories, but also convenient for selecting the appropriate number of inner contact components 5 according to needs. After the modular inner contact component 5 is assembled with the rotor component 4, one end of the inner conductor 51 on the inner contact component 5 can be connected to the conductive ring 42, and the other end of the inner conductor 51 passes through the rotor component 4, which is convenient for connection with the printed circuit board 2.

[0027] Furthermore, if Figure 5 and Figure 6 As shown, the inner contact component 5 includes at least one inner contact unit, in which an inner conductor 51 is provided, and the end of the inner conductor 51 is exposed at the end of the inner contact unit, so that after the inner contact component 5 is installed in the rotor component 4, the end of the inner conductor 51 is located on the outside of the rotor component 4.

[0028] Embodiment 2 is different from Embodiment 1 in that Figure 9~Figure 13 As shown, in addition to the inner conductor 51, the inner contact unit also includes an insulator 54 wrapped around the outer side of the inner conductor 51, and a spring structure 53 connected to the inner conductor 51 is provided on the outer side of the insulator 54, and the inner end of the spring structure 53 is connected to the inner conductor 51 in the insulator 54. The inner conductor 51 is connected to the conductive ring 42 of the rotor component 4 through the spring structure 53. The outer end of the spring structure 53 extends far away. After the inner contact unit is inserted into the rotor component 4, the rotor component 4 will press the spring structure 53 inwardly, and at the same time, the spring structure 53 is reset outwardly by elastic force so as to contact and conduct with the conductive ring 42 inside the rotor component 4.

[0029] In a preferred embodiment, Fig. 9 and Fig.10 As shown, in this embodiment, the end of the spring structure 53 is provided with a protrusion for contacting and conducting with the inside of the conductive ring 42. In another optimized embodiment, the inner side of the conductive ring 42 is further provided with a contact groove that fits with the protrusion.

[0030] Embodiment 3 is different from Embodiment 2 in that Figure 9~Figure 13 As shown, the insulator 54 is a rectangular plate structure. When the number of the inner contact monomers is greater than 1, a plurality of the inner contact monomers are arranged in a row, and the rectangular plate structure makes it easy to arrange the plurality of inner contact monomers in a row along the thickness direction. And the length direction of the inner contact monomer is arranged along the axis of the rotor component 4. The spring structure 53 is arranged on the surface corresponding to the thickness of the inner contact monomer.

[0031] Furthermore, if Figure 7 and Figure 8 As shown, a matching positioning structure is provided between the insulators 54 of adjacent inner contact monomers. The positioning structure includes a positioning protrusion 52 and a positioning groove provided on the mating surfaces of two adjacent inner contact monomers, that is, a positioning protrusion 52 is provided on the mating surface of one of the insulators 54 of the two adjacent inner contact monomers, and a positioning groove is provided on the mating surface of the other insulator 54.

[0032] In a preferred embodiment, the insulator 54 is made of plastic.

[0033] Embodiment 4 is different from Embodiment 2 in that Figure 9~Figure 16 As shown, the inner contact component 5 and / or the rotor component 4 is provided with a protective structure that cooperates with the spring structure 53, and a protection is formed on the side of the spring structure 53 to protect the spring structure 53, and does not hinder the spring structure 53 from contacting and conducting with the conductive ring 42, so as to avoid the spring structure 53 from losing contact with the conductive ring 42 after long-term use or being squeezed.

[0034] Embodiment 5 is different from Embodiment 4 in that Fig. 9 and Fig.10 As shown, the protection structure includes a protection block 511 and / or a protection strip 510 disposed on the side of the inner contact unit. Fig. 9 As shown, one side of the inner contact unit is provided with a spring structure 53 and a protection block 511, and the other side is provided with a protection strip 510. In another embodiment, the protection block 511 and the spring structure 53 may also be provided on both sides of the inner contact unit.

[0035] Furthermore, if Fig. 9 As shown, a plurality of spring structures 53 are provided on the side of the inner contact unit. The protection block 511 is provided in the gap between the spring structures 53 on the same side of the inner contact unit, and the protection block 511 is provided near the end of the spring structure 53. Fig.10As shown, the spring structure 53 matched with the protection block 511 is similar to a hook shape. The end of the spring structure 53 extends toward the conductive ring 42, and the extension direction of the end of the spring structure 53 forms a small angle with the length direction of the inner contact unit.

[0036] Furthermore, if Fig. 9 and Fig.10 As shown, the protection strip 510 is arranged along the length direction of the inner contact monomer. In this embodiment, the cross section of the protection strip 510 perpendicular to the length direction of the inner contact monomer is rectangular. In this embodiment, at least two inner contact monomers are provided, and one of the adjacent inner contact monomers is provided with a protection strip 510 on the upper side, a spring structure 53 and a protection block 511 on the lower side, and the other adjacent inner contact monomer is provided with a protection strip 510 on the lower side, a spring structure 53 and a protection block 511 on the upper side. The protection strip 510 extends to the side of the insulator 54 of the adjacent inner contact monomer, that is, the side of the rectangular structure protection strip 510 extends toward the adjacent inner contact monomer in the thickness direction of the inner contact monomer until the side of the protection strip 510 is adjacent to the spring structure 53 on the adjacent inner contact monomer. In addition, the side of the protection strip 510 is in contact with the side of the protection block 511 in the gap of the spring structure 53. The protective block 511 and the protective strip 510 provide dual protection for the hook-shaped spring structure 53, i.e., preventing the spring structure 53 from being excessively deflected in the length direction of the inner contact unit, and preventing the spring structure 53 from being excessively deflected in the thickness direction of the inner contact unit. The heights of the protective block 511 and the protective strip 510 from the center line of the inner contact unit in the length direction are both less than the height of the spring structure 35 from the center line of the inner contact unit in the length direction, so that the protective block 511 and the protective strip 510 do not hinder the spring structure 35 from contacting and conducting with the inner side of the conductive ring 42.

[0037] Embodiment 6 is different from Embodiment 5 in that the spring structure 53 cooperating with the protection strip 510 on the adjacent inner contact unit can also be configured as a cantilever structure. Fig.10 As shown, the spring structure 53 of the overhanging structure first extends from the side of the insulator 54 in a direction away from the insulator 54, then bends back to form an arc-shaped protrusion, and then the end extends toward the outer side of the protection strip 510 on the adjacent inner contact unit. At the same time, the arc-shaped protrusion is used to contact and conduct with the inner side of the conductive ring 42.

[0038] Embodiment 7 is different from Embodiment 4 in that Fig.11As shown, the protective structure includes a protective plate arranged on the side of the inner contact unit. In this embodiment, a first protective plate 55 is provided on the side of the inner contact unit, and a protective groove cooperating with the spring structure 35 is provided on the first protective plate 55. In this embodiment, the spring structure 35 is a bending type, and the spring structure 35 first extends from the side of the insulator 54 and bends laterally, and then the end extends in a direction away from the insulator 54. The end of the spring structure 35 can extend out of the protective groove so that the spring structure 35 can contact and conduct with the inner side of the conductive ring 42. In addition, in this embodiment, the protective groove is an inward depression of the side of the protective plate, so that multiple surfaces of the spring structure 35 can be protected. The protective plate can cooperate with the spring structure on the insulator 54 itself for protection, and the protective plate can also be set to extend toward the adjacent inner contact unit to protect the spring structure 35 on the adjacent inner contact unit.

[0039] Embodiment 8 is different from Embodiment 4 in that Fig.12 As shown, the protective structure includes a protective plate arranged on the side of the inner contact unit. In this embodiment, a second protective plate 56 is arranged on the side of the inner contact unit, and the second protective plate 56 is provided with a protective groove matched with the spring structure 35. In this embodiment, the spring structure 35 is an arc-shaped structure extending and bending toward the adjacent inner contact unit, so that the second protective plate 56 of the adjacent inner contact unit can protect the spring structure 35. The spring structure 35 of the arc-shaped structure can protrude out of the protective groove so that the spring structure 35 can contact and conduct with the inner side of the conductive ring 42.

[0040] Embodiment 9 is different from Embodiment 4 in that Fig.13 As shown, the protection structure includes a protection groove 57 disposed on the insulator 54 of the inner contact member. That is, the protection groove 57 is disposed on the insulator 54, the spring structure 53 is embedded in the protection groove 57, and the end of the spring structure 35 can extend out of the protection groove 57 so that the spring structure 35 can be in contact with the inner side of the conductive ring 42 for conduction.

[0041] Embodiment 10, it is different from embodiment 4 in that, Figure 14~Figure 16 As shown, the protection structure includes a limit portion arranged on the rotor component 4; the limit portion is arranged close to the spring structure 53, and the limit portion is located on the side of the spring structure 53, and does not hinder the spring structure 35 from contacting and conducting with the inner side of the conductive ring 42. In this embodiment, the limit portion is arranged at both ends of the rotor structure 4. And in this embodiment, as Fig.14 As shown, when an inner contact unit is provided in the rotor component 4 , raised limiting portions are provided in the rotor component 4 near both sides of the spring structure 53 to cooperate with and protect the spring structure 35 .

[0042] Furthermore, if Fig.15 and Fig.16As shown, when at least two inner contact units are provided in the rotor component 4 , the limiting portion on one side can cooperate with the protection structure on the inner contact unit to protect the spring structure 35 .

[0043] Embodiment 11 is different from Embodiment 10 in that Fig.15 and 16 As shown, at least two inner contact units are provided, including a first inner contact part 58 and a second inner contact part 59. The insulator 54 of one of the first inner contact part 58 and the second inner contact part 59 is provided with an extension portion extending to the other side to form a protective structure for protecting the spring structure 53 thereon.

[0044] In a preferred embodiment, Fig.15 As shown, there are an odd number of inner contact monomers greater than 1, wherein the inner contact monomers at even positions extend outward and toward the adjacent inner contact monomers on both sides, and are protected by the spring structures 53 on the inner contact monomers at odd positions. The inner contact monomers at both ends rely on the protection portion of the rotor component 4 to cooperate with the extension portion on the adjacent inner contact monomer to protect their own spring structures 53.

[0045] In another preferred embodiment, Fig.16 As shown, there are an odd number of inner contact monomers greater than 1, wherein the inner contact monomers at odd positions extend outward and toward adjacent inner contact monomers to form step surfaces to protect the spring structures 53 on the inner contact monomers at even positions.

[0046] Embodiment 12 is different from Embodiment 3 in that Figure 7 As shown, the rotor component 4 is provided with a slotted body 45, and the slotted body 45 is provided with a slot for inserting the inner contact component 5. The upper and lower sides of the slot pass through the slotted body 45 and extend to the conductive ring 42, so that the inner surface of the conductive ring 42 is exposed in the slot of the slotted body 45, so that the spring structure 53 on the inner contact component 5 can contact and conduct with the conductive ring 42 after the inner contact component 5 is inserted into the slot.

[0047] Embodiment 13 is different from Embodiment 12 in that Figure 7 As shown, the end of the slotted body 45 is exposed at the end of the rotor component 4, and a guide pin 46 for connecting the printed circuit board 14 is provided at the end of the slotted body 45, and the guide pin 46 and the inner conductor 51 are located at the same end. Figure 8 As shown, the guide pins 46 facilitate the connection and fixation of the printed circuit board 2 and at the same time facilitate the inner conductor 51 to pass through the printed circuit board 2 and connect with the external circuit.

[0048] Embodiment 14 is different from Embodiment 3 in that Fig.17 and Fig.18As shown, in addition to the contact piece 34 , the external contact assembly 3 also includes an insulating component 33 , and the contact piece 34 is inserted into the insulating component 33 . The insulating component 33 is provided with the supporting structure 32 , so that the insulating component 33 can be supported and arranged on the outer side of the rotor component 4 .

[0049] Furthermore, if Figure 7 As shown, the outer side of the conductive ring 42 of the rotor component 4 is evenly distributed with insulating rings 43 in the circumferential direction, and an annular groove is formed between adjacent insulating rings on the outer side of the conductive ring 42. The outer surface of the conductive ring 42 is exposed in the groove, and the contact pieces 34 of the external contact assembly 3 correspond to the grooves one by one. After the external contact assembly 3 and the rotor component 4 are assembled, the contact pieces 34 are in elastic contact with the outer side of the conductive ring 42. In addition, the contact pieces 34 and the conductive ring 42 can perform relative rotational motion.

[0050] Embodiment 15, it is different from embodiment 14 in that, Fig.17 and Fig.18 As shown, the external contact assembly 3 includes a plurality of external contact monomers 31, which are uniformly distributed on the outside of the rotor component 4 in the circumferential direction, and the plurality of external contact monomers 31 can be assembled into an integral cover arranged on the outside of the rotor component 4. In this embodiment, four external contact monomers 31 are provided, and the four external contact monomers 31 are symmetrically arranged on the outside of the rotor component 4 in the upper and lower directions and in the left and right directions. The support structures 32 of the four external contact monomers 31 match each other. The mating surface of the support structure 32 at one end of each external contact monomer 31 is a right-angle surface, so that after the four external contact monomers 31 are assembled, the end support structures 32 are tightly fitted to each other, playing a self-supporting role.

[0051] Embodiment 16 is different from Embodiment 15 in that matching guide pins 35 and / or guide holes 36 are provided between adjacent insulating components 33. Specifically, Fig.19 As shown, a guide pin 35 may be provided on one of two adjacent insulating components 33, and a guide hole 36 that fits with the guide pin 35 may be provided on the other. Fig. 20 As shown, a guide pin 35 is provided at one end of an insulating member 33, and a guide hole 36 is provided at the other end. A guide hole 36 that fits with the guide pin 35 is provided at one end of an adjacent insulating member 33, and a guide pin 35 is provided at the other end.

[0052] Embodiment 17 is different from Embodiment 14 in that Figure 7As shown, in addition to the conductive ring 42 and the insulating ring 43, the rotor component 4 also includes a rotating shaft 41 and a bearing 44. The rotating shaft 41, the conductive ring 42, and the insulating ring 43 can be separate assembly structures, or they can be made into a whole by integral injection, so that the rotor component 4 is also a modular structure. The outer surface of the conductive ring 42 can be a flat, grooved or convex structure, and contacts with the contact member 34 of the external contact assembly 3. The bearing 44 is arranged at both ends of the conductive ring 42, and the bearing 44 cooperates with the insulating component 33 to provide rotation support for the rotor component 4.

[0053] Embodiment 18 is different from Embodiment 17 in that Fig.19 and Fig. 20 As shown, the inner side of the insulating component 33 is provided with a stepped hole that matches the rotor component 4. Furthermore, the inner sides of both ends of each external contact unit 31 are provided with a quarter stepped hole corresponding to the position of the bearing 44. After assembly, the bearing 44 is embedded in the stepped hole and matches the stepped hole.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that any modification to the technical solutions described in the aforementioned embodiments, or any equivalent replacement of some or all of the technical features therein, within the spirit and principles of the present invention, and such 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, and should all be included in the protection scope of the present invention.

Claims

1. An electric rotary connector, characterized in that: The invention comprises a rotor component (4) having a conductive ring (42), an external contact component (3) arranged outside the rotor component (4), and a housing (1) sleeved on the outside of the external contact component (3); the external contact component (3) is provided with a support structure (32) for covering the outside of the rotor component (4) and a contact piece (34) in contact with the conductive ring (42); and an internal contact component (5) is provided inside the rotor component (4).

2. The electric rotary connector according to claim 1, characterized in that: The inner contact component (5) comprises at least one inner contact unit, each inner contact unit comprising an inner conductor (51) and an insulator (54) coated on the outside of the inner conductor (51), a spring structure (53) in communication with the inner conductor (51) being provided on the outside of the insulator (54), and the inner conductor (51) is connected to a conductive ring (42) of the rotor component (4) via the spring structure (53).

3. The electric rotary connector according to claim 2, characterized in that: The inner contact component (5) and / or the rotor component (4) is provided with a protective structure that cooperates with the spring sheet structure (35) and is used to protect the spring sheet structure (53).

4. The electric rotary connector according to claim 3, characterized in that: The protective structure comprises a protective block (511) arranged on the side of the inner contact piece monomer, the protective block (511) being arranged in the gap between the spring structures (53) and being arranged close to the spring structures (53); and the height of the protective block (511) extending out of the insulator (54) is less than the height of the spring structure (35) extending out of the insulator (54) so ​​that the spring structure (35) can be in contact with the inner side of the conductive ring (42) for conduction.

5. The electric rotary connector according to claim 3, characterized in that: The protective structure comprises a protective strip (510) arranged on the side of the inner contact unit, the protective strip (510) extending to the side of the adjacent inner contact unit and adjacent to the spring structure (53) on the adjacent inner contact unit; and the height of the protective strip (510) extending out of the insulator (54) is less than the height of the spring structure (35) extending out of the insulator (54) so ​​that the spring structure (35) can be in contact with the inner side of the conductive ring (42) for conduction.

6. The electric rotary connector according to claim 3, characterized in that: The protective structure comprises a protective plate arranged on the side of the inner contact piece monomer, the protective plate being provided with a protective groove cooperating with the spring structure (35); the spring structure (35) protrudes outside the protective groove so that the spring structure (35) can contact and conduct with the inner side of the conductive ring (42).

7. The electric rotary connector according to claim 3, characterized in that: The protective structure comprises a protective groove (57) arranged on the insulator (54) of the inner contact piece monomer or a limiting portion arranged on the rotor component (4); the spring structure (53) is embedded in the protective groove (57) or the limiting portion is arranged close to the spring structure (53), and the end of the spring structure (35) extends out of the protective groove (57) or the limiting portion is located on the side of the spring structure (53) so that the spring structure (35) can contact and conduct with the inner side of the conductive ring (42).

8. The electric rotary connector according to any one of claims 1 to 7, characterized in that: The external contact assembly (3) further comprises an insulating component (33), the contact piece (34) being inserted through the insulating component (33), and the supporting structure (32) being provided on the insulating component (33).

9. The electric rotary connector according to claim 8, characterized in that: The external contact assembly (3) comprises at least two external contact monomers (31), the external contact monomers (31) being evenly distributed circumferentially on the outside of the rotor component (4), and the at least two external contact monomers (31) can be assembled into an integral cover arranged on the outside of the rotor component (4).

10. The electric rotary connector according to claim 8, characterized in that: The inner side of the insulating component (33) is provided with a stepped hole that matches the rotor component (4); and matching guide pins (35) and / or guide holes (36) are provided between adjacent insulating components (33).

11. The electric rotary connector according to any one of claims 1 to 7, 9 and 10, characterized in that: The rotor component (4) is provided with a slotted slot body (45) for inserting the inner contact component (5), and the inner surface of the conductive ring (42) is exposed in the slot of the slotted slot body (45) so that the inner contact component (5) and the conductive ring (42) are in contact and conductive; and a guide pin (46) for connecting to a printed circuit board (14) is provided at the end of the slotted slot body (45).

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