Modular electrical swage connector

Abstract

The application provides a modular electric rotary connector, which comprises a support component with a space inside and a rotor component arranged in the support component, an outer contact assembly is arranged on the support component and is in contact with the rotor component, and an inner contact component is arranged in the rotor component. The inner contact component is arranged in the rotor component, and the inner conductor is led out from the inside of the rotor component. The structure is simple and orderly, the disadvantages of welding the wires one by one are avoided, the problems of complex line and difficult wiring in the traditional wiring scheme are avoided, and the structure is simplified. In the assembling process, each wire does not need to be handled individually, the assembling efficiency is high, and a more flexible interface is provided for the connection of the printed board.

Description

Technical Field

[0001] This invention relates to the field of electrical energy and signal transmission technology, and more particularly to a connector. Background Technology

[0002] Electrical slip rings, also known as collector rings, slip rings, current collector rings, and current collector rings, are used in electromechanical systems that transmit power and signals from a fixed position to a rotating position while rotating continuously. They are precision devices for transmitting current, various signals, images, and gas / liquid signals between two pairs of relatively rotating devices. This invention simplifies the product structure through a modular approach.

[0003] Existing rotary connector structures, such as Figures 1-4 As shown, the assembly consists of an upper support plate component 6, a lower support plate component 7, an existing rotor component 8 disposed between the upper support plate component 6 and the lower support plate component 7, and an existing outer shell 9 sleeved on the outside of the upper support plate component 6 and the lower support plate component 7. Both the upper support plate component 6 and the lower support plate component 7 include an existing support frame 10. The existing support frame 10 has perforations for inserting several U-shaped brush filaments 11. The open end of the U-shaped structure inserts into the inside of the existing support frame 10, and the other end is located on the outside of the existing support frame 10. Several external conductors 12 are also provided on the outside of the existing support frame 10, and the external conductors 12 are welded to the brush filaments 11 one by one. This rotary connector product is generally small in size, difficult to manufacture, and difficult to automate, requiring a significant investment of manpower for manual production and assembly.

[0004] Specifically, the existing rotary connector structure has the following disadvantages:

[0005] (1) The bristles 11 are extremely fine, which not only makes them difficult to assemble, but also makes them very easy to damage during the process of inserting the bristles 11 into the existing support frame 10 and during the process of welding the bristles 11 to the external wire 12. The whole process is time-consuming, has a low pass rate, and requires high operator skills.

[0006] (2) The operation of the existing rotor component 8 is complicated. The inner wire 13 needs to be welded to the inside of 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 welding point and wire stripping size must be strictly controlled to avoid short circuits and breakdowns between different circuits. Therefore, the operation requirements are extremely high.

[0007] (3) After the conductive ring is wired, the existing rotor component 8 is assembled with the shaft, conductive ring (with wire) and insulating ring. The inner wire 13 is passed through the conductive ring and insulating ring in front in sequence, and finally out of the shaft. This process is difficult to automate, and because the internal space of the ring and shaft is limited, the conductive ring that is further back is more difficult to assemble.

[0008] Chinese invention application CN115603137A, published on January 13, 2023, discloses a brush structure, a brush, and a conductive slip ring. The brush structure includes a brush holder and a brush bristle assembly. The brush bristle assembly includes a conductor plate and at least one set of brush bristles. The conductor plate is detachably connected to the brush holder. Each set of brush bristles includes two sets of brush wires. One end of each set of brush wires is welded to the conductor plate, and the other end of each set of brush wires extends into the brush holder. The two sets of brush wires in each set of brush bristles are connected through the conductor plate. When assembling the brush, by setting a conductor plate that is separate from the brush holder, the operator avoids directly fixing the brush bristles on the brush holder. The brush wires are welded to the detachable conductor plate. Compared with operating directly on the brush holder, the conductor plate is unobstructed and provides more flexible operating space. At the same time, the brush bristles do not need to be threaded one by one into the wiring holes of the one-piece molded brush holder. The time taken to weld the brush wires to the conductor plate is much less than the time taken to pierce the brush wires to the brush holder. However, this application still requires welding each wire in the rotor component individually before assembling the product. It is unavoidable that each wire needs to be processed separately during the assembly process, making the process more cumbersome and inefficient. Summary of the Invention

[0009] To address the aforementioned technical problems, this invention proposes a modular rotary connector to solve the problem that existing rotary connectors require welding each wire in the rotor component individually before product assembly, and the assembly process also requires individual processing of each metal wire, resulting in a cumbersome process.

[0010] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0011] A modular rotary connector includes a support member with internal space and a rotor component disposed within the support member. An external contact assembly that contacts and engages with the rotor component is disposed on the support member, and an internal contact assembly is disposed within the rotor component.

[0012] This invention provides a simple and orderly structure by setting an internal contact assembly inside the rotor component to lead the internal conductor out from inside the rotor component. This not only avoids the drawback of needing to solder each wire individually, but also avoids the problems of complex wiring and difficult wiring in traditional wiring schemes. Furthermore, during the assembly process, there is no need to process each wire individually, which simplifies the structure, increases assembly efficiency, and provides a more flexible interface for connecting printed circuit boards.

[0013] Furthermore, in order to facilitate the setting of multiple rows of inner conductors and to select an appropriate number of inner contact units as needed, the inner contact component includes at least one inner contact unit, the inner contact unit is provided with an inner conductor, and the inner conductor is connected to the conductive ring of the rotor component.

[0014] Furthermore, in order to enable the inner conductor of the internal wire to play an insulating role, the inner contact unit includes an insulator covering the outside of the inner conductor, and a spring structure communicating with the inner conductor is provided on the outside of the insulator. The end of the spring structure is provided with a protrusion for contacting and conducting with the conductive ring.

[0015] Furthermore, in order to facilitate the row arrangement of multiple inner contact units and to facilitate the arrangement of neat inner conductors and the connection between the inner conductors and the printed circuit board, the insulator is a rectangular plate structure, and a matching positioning structure is provided between the insulators of adjacent inner contact units.

[0016] Furthermore, in order to facilitate the installation of the inner contact assembly into the rotor component, the rotor component is provided with a slotted groove for the inner contact assembly to be inserted, and the inner surface of the conductive ring is exposed in the slot of the slotted groove so that the inner contact assembly and the conductive ring can make contact and conduction.

[0017] Furthermore, to facilitate the connection between the printed circuit board and the rotor component, the end of the slotted groove is provided with a guide pin for connecting the printed circuit board.

[0018] Furthermore, in order to modularize the external contact assembly and reduce the hassle of the assembly process, the external contact assembly includes an insulating plate and a contact element disposed on the insulating plate; the insulating plate and the contact element are fixed by force installation, or the insulating plate and the contact element are injection molded into an integral structure.

[0019] Furthermore, in order to facilitate the connection between the external contact assembly and the conductive ring on the rotor component, the support member is provided with a rigid slot for the external contact assembly to pass through, and the contact member elastically contacts the outer side of the conductive ring after passing through the rigid slot.

[0020] Furthermore, to facilitate the assembly of the external contact components and the support components, four external contact components are provided, with two components forming a group. The two groups of external contact components are symmetrically arranged on the upper and lower sides of the support component, and the contact elements on the two external contact components in each group extend in a direction away from each other.

[0021] Furthermore, in order to limit the assembly between the support component and the rotor component, the support component is a cylindrical structure; or the support component includes an upper support member and a lower support member that interlock, the inner side of the upper support member and / or the lower support member is provided with a stepped hole that mates with the rotor component, and a matching guide pin and / or guide hole is provided between the upper support member and the lower support member.

[0022] The beneficial effects of this invention are:

[0023] 1. The contact element 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 conductor of the rotating end and the stationary end can be connected while the rotor is rotating.

[0024] 2. The external contact component of the present invention includes a contact component and an insulating plate. The contact component and the insulating plate can be processed into a whole by means of forced mounting, bonding or injection molding, which can completely eliminate the fitting gap between parts and greatly improve the production assembly accuracy.

[0025] 3. The present invention enables electrical transmission through contact between the contact element and the conductive ring, which not only simplifies assembly but also eliminates assembly gaps in external contact components, thereby improving assembly accuracy.

[0026] 4. The internal contact assembly of the present invention is connected to the inside of the conductive ring of the rotor component through a spring sheet structure. The spring sheet structure has elasticity to provide a retaining force at the contact point.

[0027] 5. By arranging the contact element in a figure-eight symmetrical structure, and by providing elastic force in the contact direction when the contact element contacts the conductive ring, the present invention greatly improves the stability of the contact.

[0028] 6. This invention greatly improves assembly accuracy by distributing the external contact components on both sides of the support component and engaging them through positioning surfaces, achieving a gapless fit.

[0029] 7. The present invention provides a protruding structure on the external contact component, which can serve to fix and prevent detachment;

[0030] 8. This invention integrates all contact components into a single unit through an external contact assembly, eliminating the need for individual assembly and solving the problems of difficult assembly, low efficiency, and easy deformation of filament-shaped contact components;

[0031] 9. By modularizing the internal and external contact components, upper and lower support components, and rotor components, this invention simplifies the product structure and eliminates the need to assemble all parts individually. It can rely on precision tooling molds, which simplifies the manufacturing process, improves the precision of parts, and makes the structure more compact, which facilitates product automation and installation.

[0032] 10. By setting an insulating plate and contact parts that are separate from the brush holder, the present invention avoids the operator from directly fixing the brush bristles on the brush holder. The contact parts are fixed on the insulating plate. This structure has a more flexible operating space and more diverse processing methods.

[0033] 11. The contact of the present invention no longer needs to be inserted one by one into the wiring hole of the integrated brush holder. The time taken for the contact and the insulating plate to adopt an integrated structure or for the contact to be welded to the insulating plate is much shorter than the time taken for the perforated brush filaments to be inserted into the brush holder, which greatly improves the production and assembly efficiency of the electric brush.

[0034] 12. The modular inner conductor module of this invention leads the rotating component out from the inside, which not only solves the problems of difficult wiring and messy routing inside the slip ring, but also provides a more flexible interface. At the interface between the inner and outer contact parts, not only can traditional wiring be performed, but printed circuit boards can also be soldered, which greatly improves the modularity of the entire link and provides a brand-new design solution for the production automation of the rotary connector field. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an exploded view of an existing rotary connector.

[0037] Figure 2 This is a schematic diagram of the upper support component of an existing rotary connector;

[0038] Figure 3 This is an exploded structural diagram of the upper support component of an existing rotary connector;

[0039] Figure 4 This is a cross-sectional view of the rotor component of an existing rotary connector.

[0040] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0041] Figure 6 This is a schematic diagram of the exploded structure of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the internal contact element unit of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the two internal contact elements of the present invention;

[0044] Figure 9 This is a schematic diagram of the rotor component of the present invention;

[0045] Figure 10 This is a schematic diagram of the structure of the support component of the present invention;

[0046] Figure 11 This is a schematic diagram of the structure of the support component and the external contact component of the present invention;

[0047] Figure 12 This is a schematic diagram of the structure of the present invention and the printed circuit board;

[0048] Figure 13 This is a schematic diagram of the structure of the support component in Embodiment 11 of the present invention;

[0049] Figure 14 This is a schematic diagram of the support component in Embodiment 13 of the present invention.

[0050] The reference numerals in the figure:

[0051] 1. Outer shell; 2. Support component; 21. Upper support component; 22. Lower support component; 23. Stepped hole; 24. Forced slot; 25. Guide pin; 26. Guide hole; 27. Sealing plate; 3. External contact assembly; 31. Contact component; 32. Insulating plate; 4. Rotor assembly; 41. Shaft; 42. Conductive ring; 43. Insulating ring; 44. Bearing; 45. Slotted groove; 46. Guide pin; 5. Internal contact assembly; 51. Inner conductor; 52. Positioning protrusion; 53. Spring structure; 54. Insulator; 6. Upper support plate assembly; 7. Lower support plate assembly; 8. Existing rotor assembly; 9. Existing outer shell; 10. Existing support frame; 11. Brush filament; 12. External conductor; 13. Internal conductor; 14. Printed circuit board. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] like Figures 5-13 As shown in Embodiment 1 of the present invention, a modular rotary connector includes a housing 1, an outer contact assembly 3, a support component 2, a rotor component 4, and an inner contact component 5, as described above. Figure 5 and Figure 6As shown, the support component 2 can be a single cylindrical structure or a combined structure, with an installation space for the rotor component 4 inside. The rotor component 4 is disposed within the support component 2. In this embodiment, the external contact assembly 3 includes a plurality of external contact elements 31, which are respectively disposed on the support component 2. The rotor component 4 includes a conductive ring 42, and the portion of the external contact assembly 3 that penetrates into the support component 2 contacts and conducts with the conductive ring 42 of the rotor component 4. The outer shell 1 is fitted over the support component 2 and the external contact assembly 3. The inner contact component 5 is disposed inside the rotor component 4, and the contact component 5 has an inner conductor that contacts and conducts with the conductive ring 42. In this embodiment, as shown... Figure 6 As shown, the inner contact component 5 is a modular structure with an inner conductor 51. That is, the inner contact component 5 is pre-set as a relatively regular whole, which not only facilitates assembly with other accessories, but also makes it easy to select the appropriate number of inner contact components 5 as needed. 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 make contact with the conductive ring 42 to conduct electricity, and the other end of the inner conductor 51 extends out of the rotor component 4, which is convenient for connection with the printed circuit board 14.

[0054] Furthermore, such as Figure 7 and Figure 8 As shown, the inner contact component 5 includes at least one inner contact element unit, and an inner conductor 51 is provided inside the inner contact element unit. The end of the inner conductor 51 is exposed at the end of the inner contact element unit, such that after the inner contact component 5 is installed into the rotor component 4, the end of the inner conductor 51 is located outside the rotor component 4.

[0055] Example 2 differs from Example 1 in that, as Figure 7 and Figure 8 As shown, the inner contact unit includes an insulator 54 covering the outside of the inner conductor 51, and the inner conductor 51 and the insulator 54 are pre-assembled into an integral structure. A spring-loaded structure 53 is provided on the outside of the insulator 54, with its inner end communicating with the inner conductor 51 inside the insulator 54. The outer end of the spring-loaded structure 53 extends outward. After the inner contact unit is inserted into the rotor component 4, the rotor component 4 will press the spring-loaded structure 53 inward, while the spring-loaded structure 53 will return to its original position outward by its elastic force, thus making contact and establishing conductivity with the internal conductive ring 42 of the rotor component 4. Furthermore, as... Figure 7 As shown, the spring sheet structures 53 on both sides of each inner contact unit can be arranged symmetrically or staggered.

[0056] Furthermore, such as Figure 7 and Figure 8 As shown, in this embodiment, the end of the spring structure 53 is provided with a protrusion for making contact and conducting with the inside of the conductive ring 42. In another optimized embodiment, the inner side of the conductive ring 42 is also provided with a contact groove that fits with the protrusion.

[0057] Example 3 differs from Example 2 in that, as Figure 7 and Figure 8 As shown, the insulator 54 has a rectangular plate structure. When the number of inner contact units is greater than one, several inner contact units are arranged in a row. The rectangular plate structure facilitates the arrangement of several inner contact units in a row along the thickness direction. Furthermore, the length direction of the inner contact units is arranged along the axis of the rotor component 4. The spring sheet structure 53 is disposed on the surface corresponding to the thickness of the inner contact unit. And, as... Figure 8 As shown, the spring sheet structures 53 located on the same side of adjacent inner contact unit can be arranged in an aligned or staggered manner.

[0058] Furthermore, such as Figure 7 and Figure 8 As shown, a matching positioning structure is provided between the insulators 54 of adjacent inner contact units. The positioning structure includes a positioning protrusion 52 and a positioning groove provided on the mating surfaces of two adjacent inner contact units, that is, a positioning protrusion 52 is provided on the mating surface of one insulator 54 of two adjacent inner contact units, and a positioning groove is provided on the mating surface of the other insulator 54.

[0059] In a preferred embodiment, the inner contact assembly may also have protrusions or barbs that cooperate with the structure inside the rotor component 4 for fixation.

[0060] In another preferred embodiment, the insulator 54 is made of plastic.

[0061] Example 4 differs from Example 3 in that, as Figure 9 As shown, the rotor component 4 is provided with a slotted groove 45, which has a slot for the inner contact component 5 to be inserted. The upper and lower sides of the slot extend through the slotted groove 45 to the conductive ring 42, so that the inner surface of the conductive ring 42 is exposed in the slot of the slotted groove 45. This facilitates the contact spring structure on the inner contact component 5 to contact and conduct with the conductive ring 42 after the inner contact component 5 is inserted into the slot.

[0062] Example 5 differs from Example 4 in that, as Figure 9 As shown, the end of the slotted groove 45 protrudes from the end of the rotor component 4, and the end of the slotted groove 45 is provided with a guide pin 46 for connecting the printed circuit board 14. This guide pin 46 and the aforementioned inner conductor 51 are located at the same end. Figure 12 As shown, the guide pin 46 makes it easier to connect and fix the printed circuit board, and at the same time facilitates the connection between inner conductors 51 and inner conductors 51.

[0063] Example 6 differs from Example 2 in that, as Figure 11As shown, the external contact assembly 3 includes an insulating plate 32 and a contact element 31 disposed on the insulating plate 32; the insulating plate 32 and the contact element 31 are forcibly fixed together as a whole, that is, the insulating plate 32 and the contact element 31 are tightly fitted together, which not only fixes the left and right sides but also ensures the position of the contact element 31; or the insulating plate 32 and the contact element 31 are injection molded into an integral structure, so that the external contact assembly 3 is a modular integral structure, which facilitates the assembly of the electric rotary connector.

[0064] Example 7 differs from Example 6 in that, as Figure 5 As shown, in this embodiment, the support component 2 includes an upper support member 21 and a lower support member 22 that are interlocked. A cavity is formed between the interlocking upper support member 21 and the lower support member 22 for the rotor component 4 to be installed in the cavity.

[0065] Example 8 differs from Example 7 in that a matching guide pin 25 and / or guide hole 26 are provided between the upper support member 21 and the lower support member 22. Specifically, as shown... Figure 13 As shown, a guide pin 25 is provided at one end of the upper support member 21, and a guide hole 26 is provided at the other end. A guide hole 26 that engages with the guide pin 25 of the upper support member 21 is provided at one end of the lower support member 22, and a guide pin 25 that engages with the guide hole 26 on the upper support member 21 is provided at the other end. In another embodiment, a guide pin 25 may be provided on one of the upper support member 21 and the lower support member 22, and a guide hole 26 that engages with the guide pin 25 may be provided on the other end.

[0066] Example 9 differs from Example 7 in that, as Figure 11 As shown, both the upper support member 21 and the lower support member 22 are provided with rigid mounting slots 24 for the corresponding external contact components 3 to pass through. In this embodiment, the rigid mounting slots 24 are elongated slots. The elongated slots on the upper support member 21 are arranged at the top of the upper support member 21 along the axis of the electric rotary connector. The elongated slots on the lower support member 22 are arranged at the bottom of the lower support member 22 along the axis of the electric rotary connector.

[0067] Furthermore, such as Figure 9 As shown, insulating rings 43 are evenly distributed circumferentially on the outer side of the conductive ring 42 of the rotor component 4. Annular grooves are formed between adjacent insulating rings on the outer side of the conductive ring 42, exposing the outer surface of the conductive ring 42 in the grooves. The contact elements 31 of the outer contact assembly 3 correspond one-to-one with the grooves. After the outer contact assembly 3 is assembled with the support member 2, the portion of the contact element 31 that penetrates the support member 2 through the forced slot 24 extends into the groove and elastically contacts the outer side of the conductive ring 42. Furthermore, the contact element 31 and the conductive ring 42 can rotate relative to each other.

[0068] Example 10 differs from Example 9 in that, as Figure 11As shown, there are four external contact components 3, arranged in pairs. Two sets of external contact components 3 are symmetrically arranged on the upper and lower sides of the support member 2. One set of components 3 engages with the upper support member 21, and the other set engages with the lower support member 22. In the set engaging with the upper support member 21, two external contact components 3 are symmetrically arranged on the upper support member 21, with the contact elements 31 on these two external contact components extending away from each other, allowing the contact elements 31 extending from the top into the support member 2 to elastically contact the upper two sides of the outer periphery of the conductive ring 42. Similarly, in the set engaging with the lower support member 22, two external contact components 3 are symmetrically arranged on the outer side of the lower support member 22, with the contact elements 31 on these two external contact components extending away from each other, allowing the contact elements 31 extending from the bottom into the support member 2 to elastically contact the lower two sides of the outer periphery of the conductive ring 42. Furthermore, the contact elements 31 of the external contact components 3 have an inward elastic force, making the contact between the contact elements 31 and the conductive ring 42 more stable.

[0069] Furthermore, such as Figure 11 As shown, the top of the upper support member 21 is symmetrically provided with two rigid mounting slots 24 that cooperate with a set of external contact components 3. The bottom of the lower support member 22 is symmetrically provided with two rigid mounting slots 24 that cooperate with another set of external contact components 3.

[0070] Example 11 differs from Example 10 in that, as Figure 11 As shown, the side of the contact plate 32 of the external contact assembly 3 is provided with a protruding structure 33, which can play a role in fixing and preventing detachment after the external contact assembly 3 is assembled with the support component 2 through the forced mounting slot 24.

[0071] Example 12 differs from Example 7 in that, as Figure 9 As shown, in addition to the conductive ring 42 and the insulating ring 43, the rotor component 4 also includes a shaft 41 and a bearing 44. The shaft 41, conductive ring 42, and insulating ring 43 can be separate assembly structures, or they can be integrally injection molded, making the rotor component 4 a modular structure. The outer surface of the conductive ring 42 can be flat, grooved, or raised, and it contacts the contact element 31 of the external contact assembly 3. The bearing 44 is located at both ends of the conductive ring 42, and it cooperates with the upper and lower support components 2 for positioning, providing rotational support for the rotor component 4.

[0072] Furthermore, the inner sides of the upper support member 21 and the lower support member 22 are provided with stepped holes 23 that mate with the rotor component 4. For example... Figure 10 As shown, stepped holes 23 are provided on the inner sides of both ends of the two support components 2, corresponding to the positions of the bearings 44. The bearings 44 are embedded in the stepped holes 23 and cooperate with the stepped holes 23.

[0073] Example 13 differs from Example 6 in that, as Figure 14 As shown, the support component 2 is an integral cylindrical structure. In this embodiment, the support component 2 has a cavity for the rotor component 4 to be installed, and the end of the support component 2 is provided with an opening for the rotor component 4 to be installed, which is sealed by a sealing plate 27.

[0074] The above description is merely 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 foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features thereof, within the spirit and principles of the present invention, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A modular rotary connector, characterized in that, The system includes a support component (2) with internal space and a rotor component (4) disposed within the support component (2). An external contact assembly (3) is provided on the support component (2) to contact and cooperate with the rotor component (4). An internal contact component (5) is provided inside the rotor component (4). The internal contact component (5) includes at least one internal contact element unit, which is a rectangular block structure. A spring sheet structure (53) is disposed on the surface corresponding to the thickness of the internal contact element unit. The spring sheet structures (53) located on the same side of adjacent internal contact element units can be arranged in an aligned or staggered manner. A matching positioning structure is provided between the insulators (54) of adjacent internal contact element units. The internal contact element unit contains... An inner conductor (51) is provided, and the inner conductor (51) is connected to the conductive ring (42) of the rotor component (4); the outer contact assembly (3) includes an insulating plate (32) and a contact (31) disposed on the insulating plate (32); the side of the insulating plate (32) of the outer contact assembly (3) is provided with a protruding structure (33); the support component (2) is provided with a forced mounting slot (24) for the outer contact assembly (3) to pass through, and the contact (31) is elastically contacted with the outer side of the conductive ring (42) after passing through the forced mounting slot (24); the insulating plate (32) and the contact (31) are fixed by forced mounting, or the insulating plate (32) and the contact (31) are integrally formed by injection molding.

2. The modular rotary connector according to claim 1, characterized in that, The inner contact unit includes an insulator (54) covering the outside of the inner conductor (51). The outside of the insulator (54) is provided with a spring structure (53) communicating with the inner conductor (51). The end of the spring structure (53) is provided with a protrusion for contacting and conducting with the conductive ring (42).

3. The modular rotary connector according to claim 2, characterized in that, The insulator (54) has a rectangular plate structure.

4. The modular rotary connector according to any one of claims 1 to 3, characterized in that, The rotor component (4) has a slotted groove (45) for inserting an inner contact component (5), and the inner surface of the conductive ring (42) is exposed in the slot of the slotted groove (45) so that the inner contact component (5) can contact and conduct with the conductive ring (42).

5. The modular rotary connector according to claim 4, characterized in that, The end of the slotted groove (45) is provided with a first guide pin (46) for connecting the printed circuit board (14).

6. The modular rotary connector according to any one of claims 1 to 3 and 5, characterized in that, The external contact components (3) are provided in four groups of two. The two groups of external contact components (3) are symmetrically arranged on the upper and lower sides of the support component (2), and the contact elements (31) on the two external contact components (3) in each group extend in a direction away from each other.

7. The modular rotary connector according to any one of claims 1 to 3 and 5, characterized in that, The support component (2) is a cylindrical structure; or the support component (2) includes an upper support (21) and a lower support (22) that are interlocked, and the inner side of the upper support (21) and / or the lower support (22) is provided with a stepped hole (23) that cooperates with the rotor component (4), and a second guide pin (25) and a guide hole (26) that are matched between the upper support (21) and the lower support (22).

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