Mixed connector plug and socket convenient for miniaturization

Abstract

Conducting rings and insulating spacers of the plug are sequentially and alternately arranged in the axial direction to form a cylinder shape, and an insulating plug installed on a high-frequency insertion piece is located on one side, in the axial direction, of the cylinder shape where the conducting rings are located, namely the high-frequency insertion piece and the conducting rings are sequentially distributed in the axial direction. The projections of the high-frequency contact element and the plurality of low-frequency contact elements of the socket are sequentially distributed along the axial direction, so that the high-frequency connector and the low-frequency connector can respectively realize contact transmission at different positions in the axial direction, and the radial size of the mixed connector is effectively reduced; the outer peripheral surfaces of the plurality of conducting rings and the insulating spacers form the same outer cylindrical surface, so that the radial sizes of the plug and the socket can be reduced to the maximum extent, and the miniaturization of the mixed connector is greatly facilitated.

Description

Technical Field

[0001] The present invention relates to the field of mixed connectors, and in particular to a mixed connector plug and socket that are easy to miniaturize. Background Art

[0002] The multi-way mixed connector mixes high-frequency connectors and low-frequency connectors in a circular body, generally with multiple pins and sockets arranged on a plane. Through the plug-in connection of the plug and the socket, the setting of the device peripheral ports can be reduced, the connection of the device can be reduced, and the connection of high-frequency and low-frequency multi-way signals can be achieved with one plug-in connection. In order to ensure that the corresponding holes are connected one by one, it is necessary to set a guide key position, that is, when the plug and the socket are connected, the key position must be visually aligned first, which makes it very inconvenient for the plug and the socket to find the key position, align the hole position, and plug in. In addition, in order to accommodate high-frequency and low-frequency connectors on the plug-in surface at the same time, the radial size of the existing mixed connector is large, which is not convenient for disassembly and assembly and plug-in connection under conditions of limited space and lighting such as underground or pipeline. Summary of the invention

[0003] The object of the present invention is to provide a hybrid connector plug and socket which are easy to miniaturize, and can greatly reduce the radial size of the hybrid connector for easy use.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a mixed connector plug which is easy to miniaturize, comprising an insulating shell and an insulating plug, a conductive ring and an insulating spacer are arranged between the insulating shell and the insulating plug, the conductive ring and the insulating spacer are arranged alternately in sequence along the axial direction, at least two of the conductive rings are coaxially arranged and the projections of the outer circumferences of the rings in the axial direction coincide, the insulating shell and the insulating plug are respectively provided with axial through holes, a center contact is installed in the axial through hole of the insulating plug, a first connecting portion is provided at one end of the conductive ring, and the first connecting portion is used to realize the electrical connection between the conductive ring and the connector wire.

[0005] Preferably, the projections of the outer peripheral surface of the conductive ring and the outer peripheral surface of the insulating spacer in the axial direction both overlap.

[0006] Preferably, a transition connection portion is provided at the tail of the conductive ring, and an insulating spacer portion is provided at the tail of the insulating spacer. The transition connection portion and the insulating spacer portion are radially spaced apart in the insulating shell, and a barb is provided at the tail end of the insulating spacer. The barb stops the tail end of the transition connection portion, thereby limiting the axial displacement of the transition connection portion relative to the insulating spacer portion.

[0007] Preferably, the transition connection portion is a transition sleeve, the insulating spacer portion is a positioning sleeve, and the transition sleeve and the positioning sleeve are radially spaced and sleeved in the insulating shell.

[0008] Preferably, the insulating shell and the tail end of the positioning sleeve are fixed by means of glue injection molding.

[0009] Preferably, the transition sleeve axially closest to the plug-in end is threadedly connected to the insulating plug.

[0010] Preferably, the first connection portion is a plug welding piece, which is integrally connected to the tail end of the transition connection portion and extends to a side of the insulating housing away from the plug end.

[0011] Preferably, the plug welding wire sheets are evenly spaced and distributed along the circumference of the insulating housing.

[0012] A miniaturized hybrid connector socket comprises an insulating sleeve and an insulating support body installed inside the insulating sleeve, the insulating support body comprises a cylindrical portion and a core shaft portion along the axial direction, the cylindrical portion is provided with an inner cavity for accommodating an adapting contact piece when the connector is plugged in, the cylindrical portion is provided with a first contact piece, a contact portion of the first contact piece extends into the inner cavity and the contact portions are spaced apart along the axial direction, so as to achieve contact and conduction with the adapting contact piece, a second connecting portion is provided at one end of the first contact piece, and the second connecting portion is used to achieve electrical connection between the first contact piece and the connector wire; The core shaft portion is provided with an axial through hole which penetrates the inner cavity of the cylindrical portion, and a second contact piece which can contact with the high-frequency center contact piece is installed in the axial through hole of the core shaft portion.

[0013] Preferably, the first contact piece is a strip-shaped contact spring arranged on the outer wall of the cylindrical portion, the first contact piece is provided with a protrusion, the outer wall of the cylindrical portion is provided with a radial through hole penetrating to the inner cavity, and the protrusion extends into the inner cavity of the cylindrical portion through the radial through hole.

[0014] Preferably, the protrusion is an arc-shaped protrusion or a spherical protrusion.

[0015] Preferably, a slot for mounting the contact spring is provided on the cylindrical portion, the width of the slot matches the width of the contact spring, and the radial through hole is located on the bottom surface of the slot.

[0016] Preferably, the second connecting portion is a socket welding wire sheet, which is integrally formed and connected with the tail end of the contact spring sheet and extends to a side of the insulating sleeve away from the plug-in end.

[0017] Preferably, the first contact members are evenly spaced and distributed along the circumference of the insulating support body.

[0018] Preferably, the cylindrical portion and the core shaft portion are integrally formed, and the outer diameter of the cylindrical portion is greater than the outer diameter of the core shaft portion.

[0019] Preferably, sealing rings are installed on the inner wall and outer wall of the cylindrical part away from one end of the core shaft part respectively. The sealing ring on the outer wall is used to seal the gap between the cylindrical part and the insulating sleeve, and the sealing ring on the inner wall is used to seal the gap between the cylindrical part and the plug.

[0020] According to the above technical solution, the beneficial effects of the present invention are: 1. The conductive rings and insulating spacers of the plug are alternately arranged in sequence along the axial direction to form a cylindrical shape, and the insulating plug installed on the center contact is located on the axial side of the cylindrical shape where the conductive ring is located, that is, the center contact and multiple conductive rings are distributed in sequence along the axial direction; the raised portions of multiple first contacts of the socket are spaced apart in the axial direction, and the core shaft portion on which the second contact is installed is located on the axial side of the cylindrical portion where the first contact is located, that is, the raised portions of the second contact and multiple first contacts are also distributed in sequence along the axial direction; therefore, both the plug and the socket change the structure of the existing mixed connector that accommodates high and low frequency connectors on the same mating surface at the same time, so that the high and low frequency connectors can respectively realize contact transmission at different axial positions, thereby effectively reducing the radial size of the mixed connector.

[0021] 2. In the present invention, the outer circumferential surfaces of multiple conductive rings form the same outer cylindrical surface, and the protrusions of multiple first contact members also extend into the inner side of the same inner cylindrical surface of the cylindrical portion of the insulating support body. The same outer cylindrical surface means that the radial dimensions of the main part of the middle part of the plug are the same, and most of the inner holes of the socket are also the same. Therefore, the radial dimensions of the plug and the socket can be minimized to the maximum extent, providing maximum convenience for the miniaturization of mixed connectors.

[0022] 3. The structure in which the outer circumferential surface of the conductive ring contacts the raised portion of the first contact piece enables multiple conductive rings to contact each other with multiple first contact pieces when the plug is plugged in at any circumferential angle relative to the socket. Therefore, the plug and the socket do not require any form of guidance and key alignment to achieve blind plugging and 360-degree rotation; the plug welding wire sheet and the socket welding wire sheet extend to the inner cavity at the end of the plug and the socket respectively, so that wire welding can be directly performed at the end of the plug and the socket, realizing visualization and maintainability of wire welding; therefore, the present invention makes the wire welding operation and plug-in use of the mixed connector more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the plug; Figure 2 A half-section diagram of the plug; Figure 3 is a schematic diagram of a socket; Figure 4 is a schematic diagram of an insulating support; Figure 5 is a cross-sectional view of an insulating support; Figure 6 It is a schematic diagram of the arc-shaped protrusion contacting the spring piece; Figure 7 Schematic diagram of the spherical protrusion contacting the spring.

[0024] Markings in the figure: 1. insulating shell, 2. insulating plug, 3. conductive ring, 4. insulating spacer, 5. transition sleeve, 6. positioning sleeve, 7. barb, 8. plug welding wire piece, 9. center contact, 10. insulating sleeve, 11. insulating support body, 12. cylindrical portion, 13. core shaft portion, 14. first contact piece, 15. raised portion, 16. radial through hole, 17. socket welding wire piece, 18. second contact piece, 19. slot, 20. sealing ring, 22. conductive ring bending portion, 23. insulating bending portion. DETAILED DESCRIPTION

[0025] With reference to the accompanying drawings, the specific implementation is as follows: A hybrid connector that is easy to miniaturize, including a plug and a socket. Figure 1-2 As shown, the plug includes an insulating shell 1 and an insulating plug 2, and a conductive ring 3 and an insulating spacer 4 are arranged between the insulating shell 1 and the insulating plug 2. The conductive rings 3 and the insulating spacers 4 are alternately arranged in sequence along the axial direction and the number is not limited. In this embodiment, four conductive rings 3 and three insulating spacers 4 are coaxially arranged, and the projections of the outer peripheral surfaces of the four conductive rings 3 and the three insulating spacers 4 in the axial direction coincide; a first connecting portion is provided at one end of the conductive ring 3, and the first connecting portion is used to realize the electrical connection between the conductive ring 3 and the connector wire.

[0026] The insulating shell 1 and the insulating plug 2 are respectively provided with axial through holes, and a center contact 9 is interference-fitted in the axial through hole of the insulating plug 2. The mixed connector is usually a mixture of a high-frequency connector and a low-frequency connector. The center contact 9 in this embodiment is a high-frequency contact.

[0027] like Figure 2 As shown, the insulating shell 1 and the insulating plug 2 are both cylindrical hollow shell structures, the conductive ring 3 is an annular structure, and a transition connection portion is provided at the tail of the conductive ring 3, and the transition connection portion is used to connect the conductive ring 3 and the first connection portion. The transition connection portion of this embodiment is a transition sleeve 5, and a conductive ring bending portion 22 is provided at the connection between the transition sleeve 5 and the conductive ring 3. The insulating spacer 4 is also an annular structure, and an insulating spacer portion is provided at the tail of the insulating spacer 4, and the insulating spacer portion is used to separate adjacent transition connection portions. The insulating spacer portion of this embodiment is a positioning sleeve 6, and an insulating bending portion 23 is provided at the connection between the positioning sleeve 6 and the insulating spacer 4. When the conductive ring 3 and the insulating spacer 4 are arranged in an axial interval, the conductive ring bending portion 22 and the insulating bending portion 23 correspond to the stopper in the axial direction, so that the transition sleeve 5 and the positioning sleeve 6 can be arranged in a radial interval.

[0028] like Figure 2 As shown, four transition sleeves 5 and three positioning sleeves 6 are coaxially sleeved in sequence and stacked to form the same cylinder. When installing the transition sleeve 5 and the positioning sleeve 6, after the end faces of the adjacent conductive ring 3 and the insulating spacer 4 are fitted and contacted, the end faces of the conductive ring bending portion 22 and the insulating bending portion 23 on both sides also reach the fitting and contacting position at the same time, and the axial movement is guided by the inner and outer cylindrical surfaces of the transition sleeve 5 and the positioning sleeve 6, and the axial movement is stopped by the end faces of the conductive ring bending portion 22 and the insulating bending portion 23.

[0029] like Figure 2 As shown, the end face of the conductive ring 3 farthest from the plug-in end and the end face of the conductive ring bending portion 22 are also fitted with the end face of the insulating shell 1, and the outer cylindrical surface of the transition sleeve 5 farthest from the plug-in end is fitted with the inner cylindrical surface of the insulating shell 1, and the insulating shell 1 has a section of outer cylindrical surface, and the axial projection of the outer cylindrical surface of the conductive ring 3 also coincides. Therefore, during installation, the transition sleeve 5 and the positioning sleeve 6 can be firstly sleeved into one body, and then the sleeved cylindrical overall structure can be inserted into the inner cylindrical surface of the insulating shell 1, or the transition sleeve 5 farthest from the plug-in end can be first inserted into the inner cylindrical surface of the insulating shell 1, and then the remaining positioning sleeves 6 and transition sleeves 5 can be sleeved in sequence.

[0030] like Figure 2 As shown, in this embodiment, the conductive ring bending portion 22 and the insulating bending portion 23 also have a conical surface, and the conical surface sizes of each conductive ring bending portion 22 and the insulating bending portion 23 are different. When the four transition sleeves 5 and the three positioning sleeves 6 are sleeved together, there is a gap between the conical surfaces of the conductive ring bending portion 22 and the insulating bending portion 23, which can effectively reduce the interference between adjacent sleeves due to processing errors, and facilitate the sleeve installation process of the transition sleeve 5 and the positioning sleeve 6.

[0031] like Figure 2As shown, the tail end of the positioning sleeve 6 is provided with a barb 7, and the barb 7 is clamped on the tail end of the transition sleeve 5, thereby limiting the axial displacement of the transition sleeve 5 relative to the positioning sleeve 6. The insulating housing 1 and the tail ends of the three positioning sleeves 6 are fixed by glue pouring. When the glue pouring is solidified, the positioning sleeve 6 cannot move relative to the insulating housing 1. At this time, the transition sleeve 5 and the positioning sleeve 6 are not only sleeved as one, but the inner and outer cylindrical surfaces are mutually attached and cannot move relative to each other in the radial direction. Moreover, the axial position cannot move relative to each other due to the barb 7. Therefore, the transition sleeve 5 is also fixedly installed in the insulating housing 1. The position of the glue pouring molding includes the position of the barb 7, and the tail end surface of the positioning sleeve 6 is also provided with a glue pouring groove, which faces the surface of the transition sleeve 5. The glue pouring groove can make the glue flow between the positioning sleeve 6 and the transition sleeve 5, which can improve the fixing effect of the glue pouring molding, and further ensure that in addition to being unable to move in the axial and radial directions, the conductive ring 3 and the insulating spacer 4 can also be prevented from rotating.

[0032] After the insulating housing 1, the conductive ring 3 and the insulating spacer 4 are glued and connected as a whole, the insulating plug 2 is finally installed. In this embodiment, the insulating plug 2 is coaxially installed on the end of the transition sleeve 5 closest to the plug end by threaded connection, and the insulating plug 2 and the remaining parts can be connected to form the overall structure of the plug. The above structure allows the central contact 9 and the four conductive rings 3 to be distributed in sequence along the axial direction, thus avoiding the situation where multiple parts are arranged separately on the same radial plane, and can reduce the radial size of the plug.

[0033] The first connection portion is a plug welding piece 8, which is integrally formed and connected with the tail end of the transition sleeve 5 and extends to the side of the insulating housing 1 away from the plug end. In this embodiment, the four plug welding pieces 8 are evenly spaced along the circumference of the insulating housing 1, and the plug welding pieces 8 are integrally formed with the tail end of the transition sleeve 5. Figure 1 It can be seen from the three plug welding pieces 8 shown that the plug welding piece 8 in the middle position and the tail end of the transition sleeve 5 belong to the same cross-sectional plane in the figure, and although the two plug welding pieces 8 in the upper and lower positions and the transition sleeve 5 are blocked by other structures, the connection method is the same as the plug welding piece 8 in the middle position, that is, they are directly extended axially from the tail end of the transition sleeve 5 with the same material until they extend into the inner cavity of the insulating shell 1 in a sheet-like structure, and the required shape of the plug welding piece 8 is formed at the end according to the requirements of the welding wire, and the inner cavity of the insulating shell 1, that is, the end of the plug, is open, so the wire can be directly welded at the end of the plug, realizing the visualization and maintainability of the wire welding.

[0034] like Figure 3-5As shown, the socket includes an insulating sleeve 10 and an insulating support body 11 installed inside the insulating sleeve 10. The insulating support body 11 includes a cylindrical portion 12 and a core shaft portion 13 along the axial direction. The cylindrical portion 12 has an inner cavity for accommodating the plug-in end of the plug when the head seat is inserted. Four first contact pieces 14 are installed on the outer side of the cylindrical portion 12. The contact portions of the first contact pieces 14 extend into the inner cavity and are distributed at intervals along the axial direction to achieve contact and conduction with the matching contact piece. A second connecting portion is provided at one end of the first contact piece 14, and the second connecting portion is used to achieve electrical connection between the first contact piece 14 and the connector wire.

[0035] The first contact member 14 is a strip-shaped contact spring arranged on the outer wall of the cylindrical portion 12, and the contact portion of the contact spring has a protrusion 15, such as Figure 4-5 As shown, a radial through hole 16 penetrating into the inner cavity is provided on the outer wall of the cylindrical portion 12, and the protrusion 15 extends into the inner cavity of the cylindrical portion 12 through the radial through hole 16. The protrusions 15 of the four first contact members 14 are distributed at intervals along the axial direction and can contact the outer circumferential surfaces of the four conductive rings 3 respectively. The projections of the four protrusions 15 along the axial direction do not overlap, so that the contact points of the protrusions 15 and the conductive rings 3 are evenly distributed in the circumferential space.

[0036] like Figure 6 As shown, the protrusion 15 is an arc-shaped protrusion. Figure 7 As shown, the protrusion 15 is a spherical protrusion, and the first contact member 14 can be any form of elastic contact body that meets the use requirements. When the contact spring is installed to the outer wall of the cylindrical portion 12, that is, the protrusion 15 extends into the radial through hole 16, a clamping ring can be set on the outer side of the cylindrical portion 12 to limit the contact spring from separating from the cylindrical portion 12. A more convenient method is to match the size of the protrusion 15 with the radial through hole 16 so that a certain radial thrust needs to be applied to the contact spring during installation to make the protrusion 15 snap into the radial through hole 16, and when the head seat is inserted and the protrusion 15 contacts the conductive ring 3, the clamping force of the radial through hole 16 on the protrusion 15 can prevent the protrusion 15 from being pushed by the conductive ring 3 and escaping from the radial through hole 16, so that the contact spring can be installed in the cylindrical portion 12 without the need for redundant parts such as a clamping ring.

[0037] The cylindrical portion 12 is provided with a slot 19 for mounting the contact spring, and the radial through hole 16 is located at the bottom surface of the slot 19. Figure 4As shown, the lengths of the four slots 19 are different. The lengths of the slots 19 are designed according to the contact springs installed therein. When the length of the contact springs is shorter, the length of the slots 19 is shortened accordingly. The width of the slots 19 matches the width of the contact springs, so that the contact springs can be installed in the slots 19 by interference fitting. Thus, the cooperation between the protrusions 15 and the radial through holes 16 and the cooperation between the contact springs and the slots 19 ensures that the contact springs will not be separated during the insertion of the head seat.

[0038] like Figure 3-5 As shown, the cylindrical portion 12 and the core shaft portion 13 are integrally formed, and the core shaft portion 13 is provided with an axial through hole that penetrates the inner cavity of the cylindrical portion 12. The second contact piece 18 that can contact with the center contact piece 9 is installed in the axial through hole of the core shaft portion 13 by interference fit. Since the cylindrical portion 12 makes contact through the protruding portion 15 protruding from the inner wall, and the core shaft portion 13 makes contact through the second contact piece 18 installed inside, the inner diameter of the cylindrical portion 12 is usually larger than the inner diameter of the core shaft portion 13. In order to save materials, the outer diameter of the cylindrical portion 12 is also larger than the outer diameter of the core shaft portion 13 during design. The above structure allows the second contact piece 18 and the protruding portions 15 of the four first contacts 14 to be distributed in sequence along the axial direction, thus avoiding the situation where multiple parts are arranged separately on the same radial plane, and can reduce the radial size of the socket.

[0039] like Figure 3 As shown, the second connection part is a socket welding piece 17, which is integrally connected with the tail end of the contact spring piece and extends to the side of the insulating sleeve 10 away from the plug-in end. Usually, the socket welding piece 17 can be formed by directly bending the tail end of the contact spring piece. Since the four first contact members 14 are evenly spaced along the circumference of the insulating support body 11, the four socket welding pieces 17 are evenly spaced along the circumference of the insulating support body 11, and the wires can be directly welded at the end of the socket, realizing visualization and maintainability of wire welding.

[0040] Sealing rings 20 are installed on the inner wall and outer wall of the cylindrical portion 12 away from the core shaft portion 13. The sealing ring 20 on the outer wall is used to seal the gap between the cylindrical portion 12 and the insulating sleeve 10, and the sealing ring 20 on the inner wall is used to seal the gap between the cylindrical portion 12 and the plug.

[0041] When in use, the end of the plug with the center contact 9 installed is first inserted into the inner hole of the socket. When the center contact 9 and the second contact 18 contact each other, the protrusions 15 of the four first contacts 14 will also contact the four conductive rings 3 respectively. Therefore, the plug and the socket do not need any form of guidance and key alignment, and can achieve blind insertion and 360-degree rotation. In addition, by setting the outer peripheral surfaces of the conductive ring 3 and the insulating spacer 4 to form the same outer cylindrical surface, the radial size difference between the conductive ring 3 and the insulating spacer 4 is eliminated, so the radial size of the plug and the socket can be minimized to the maximum extent, providing the greatest convenience for the miniaturization of mixed connectors.

Claims

1. A miniaturized hybrid connector plug, characterized in that: The invention comprises an insulating shell (1) and an insulating plug (2), wherein a conductive ring (3) and an insulating spacer (4) are arranged between the insulating shell (1) and the insulating plug (2), the conductive ring (3) and the insulating spacer (4) are arranged alternately in the axial direction, at least two of the conductive rings (3) are coaxially arranged and the projections of the outer peripheral surfaces of the rings in the axial direction overlap, the insulating shell (1) and the insulating plug (2) are respectively provided with axial through holes, a center contact piece (9) is installed in the axial through hole of the insulating plug (2), and a first connecting portion is provided at one end of the conductive ring (3), the first connecting portion is used to realize the electrical connection between the conductive ring (3) and the connector wire.

2. A miniaturized hybrid connector plug according to claim 1, characterized in that: The projections of the outer peripheral surface of the conductive ring (3) and the outer peripheral surface of the insulating spacer (4) in the axial direction both overlap.

3. The miniaturized hybrid connector plug according to claim 1, characterized in that: A transition connection portion is provided at the tail of the conductive ring (3), an insulating spacer portion is provided at the tail of the insulating spacer (4), the transition connection portion and the insulating spacer portion are radially spaced and arranged in the insulating housing (1), a barb (7) is provided at the tail end of the insulating spacer portion, and the barb (7) stops the tail end of the transition connection portion, thereby limiting the axial displacement of the transition connection portion relative to the insulating spacer portion.

4. A miniaturized hybrid connector plug according to claim 3, characterized in that: The transition connection portion is a transition sleeve (5), the insulating spacer portion is a positioning sleeve (6), and the transition sleeve (5) and the positioning sleeve (6) are sleeved in the insulating housing (1) at intervals in the radial direction.

5. The miniaturized hybrid connector plug according to claim 4, characterized in that: The insulating housing (1) and the rear end of the positioning sleeve (6) are fixed by means of glue injection molding.

6. The miniaturized hybrid connector plug according to claim 4, characterized in that: The transition sleeve (5) closest to the plug-in end in the axial direction is threadedly connected to the insulating plug (2).

7. A miniaturized hybrid connector plug according to any one of claims 3 or 4, characterized in that: The first connection portion is a plug welding piece (8), which is integrally formed and connected to the tail end of the transition connection portion and extends to a side of the insulating housing (1) away from the plug end.

8. The miniaturized hybrid connector plug according to claim 7, characterized in that: The plug welding wire sheets (8) are evenly spaced and distributed along the circumference of the insulating housing (1).

9. A miniaturized hybrid connector socket, characterized in that: The invention comprises an insulating sleeve (10) and an insulating support body (11) installed inside the insulating sleeve (10), wherein the insulating support body (11) comprises a cylindrical portion (12) and a core shaft portion (13) along the axial direction, wherein the cylindrical portion (12) is provided with an inner cavity capable of accommodating a matching contact piece when the connector is plugged in, wherein the cylindrical portion (12) is provided with a first contact piece (14), wherein a contact portion of the first contact piece (14) extends into the inner cavity and the contact portions are spaced apart along the axial direction so as to achieve contact and conduction with the matching contact piece, and wherein a second connecting portion is provided at one end of the first contact piece (14), wherein the second connecting portion is used to achieve electrical connection between the first contact piece (14) and a connector wire; The core shaft portion (13) is provided with an axial through hole which penetrates the inner cavity of the cylindrical portion (12), and a second contact piece (18) which can contact the center contact piece (9) is installed in the axial through hole of the core shaft portion (13).

10. The miniaturized hybrid connector according to claim 9, characterized in that: The first contact piece (14) is a strip-shaped contact spring arranged on the outer wall of the cylindrical portion (12), the first contact piece (14) is provided with a protrusion (15), the outer wall of the cylindrical portion (12) is provided with a radial through hole (16) penetrating to the inner cavity, and the protrusion (15) extends into the inner cavity of the cylindrical portion (12) through the radial through hole (16).

11. The miniaturized hybrid connector according to claim 10, characterized in that: The raised portion (15) is an arc-shaped raised portion or a spherical raised portion.

12. The miniaturized hybrid connector according to claim 10, characterized in that: A slot (19) for mounting a contact spring is provided on the cylindrical portion (12); the width of the slot (19) matches the width of the contact spring, and the radial through hole (16) is located on the bottom surface of the slot (19).

13. The miniaturized hybrid connector according to claim 10, characterized in that: The second connection portion is a socket welding wire sheet (17), which is integrally formed and connected to the tail end of the contact spring sheet and extends to a side of the insulating sleeve (10) away from the plug-in end.

14. The miniaturized hybrid connector according to claim 9, characterized in that: The first contact pieces (14) are evenly spaced and distributed along the circumference of the insulating support body (11).

15. The miniaturized hybrid connector according to claim 9, characterized in that: The cylindrical portion (12) and the core shaft portion (13) are integrally formed, and the outer diameter of the cylindrical portion (12) is greater than the outer diameter of the core shaft portion (13).

16. The miniaturized hybrid connector according to claim 9, characterized in that: Sealing rings (20) are respectively installed on the inner wall surface and the outer wall surface of the end of the cylindrical portion (12) away from the core shaft portion (13); the sealing ring (20) on the outer wall surface is used to seal the gap between the cylindrical portion (12) and the insulating sleeve (10); and the sealing ring (20) on the inner wall surface is used to seal the gap between the cylindrical portion (12) and the plug.

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