Coaxial connector, coaxial connecting assembly and assembling method of coaxial connecting assembly

Abstract

The invention relates to a coaxial connector, a coaxial connecting assembly and an assembling method of the coaxial connecting assembly, and the coaxial connector comprises a shielding shell, an insulating part and a terminal. The shielding shell comprises a shell body arranged in the axial direction and a cable connecting part, at least three elastic arms are arranged on the side wall of the shell body at intervals in the circumferential direction, and at least part of the elastic arms are arranged in a staggered mode in the axial direction of the shell body. The insulating part is arranged in the shell, the insulating part is provided with a cavity, the terminal is located in the cavity, and the terminal is further provided with a core wire connecting part. According to the invention, the stability when the coaxial connector is plugged with the male end can be improved, and the plugging operation is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, in particular to a coaxial connector, a coaxial connection assembly and an assembling method of the coaxial connection assembly. BACKGROUND

[0002] As a key basic element in a radio frequency signal transmission link, the coaxial connector is used to realize detachable interconnection between coaxial cables and devices, devices or cables, and is widely used in communication, aerospace, automobile electronics, test and measurement and many other fields.

[0003] In the structural design of the coaxial connector, the shielding shell is provided with elastic arms, and the elastic arms and the male head are in elastic abutting force, so that the coaxial connector and the male head form close contact, and the connection stability is ensured.

[0004] If the number of elastic arms is set to be more, the connection stability between the coaxial connector and the male head can be improved, but the force is large during the plugging operation with the male head, and the operation is not convenient, if the number of elastic arms is set to be less, the abutting force between the male head in the plugged state is small, and problems such as looseness are easily caused, and the stability is poor.

[0005] And how to improve the stability of the coaxial connector and the male head during plugging, and facilitate the plugging operation, is a technical problem that the person skilled in the art needs to solve. SUMMARY

[0006] The purpose of the present application is to provide a coaxial connector, a coaxial connection assembly and an assembling method of the coaxial connection assembly, which can improve the stability of the coaxial connector and the male head during plugging, and facilitate the plugging operation.

[0007] To solve the above technical problems, the present application provides a coaxial connector, which comprises a shielding shell, an insulating piece and a terminal; the shielding shell comprises a shell body and a cable connecting portion arranged in the axial direction, at least three elastic arms are arranged on the side wall of the shell body in the circumferential direction, and at least part of the elastic arms are arranged in the axial direction of the shell body; the insulating piece is arranged in the shell body, the insulating piece has a cavity, the terminal is located in the cavity, and the terminal further has a core wire connecting portion.

[0008] Optionally, the side wall of the shell body is provided with two groups of elastic portions, the elastic portion comprises at least three elastic arms arranged in the circumferential direction of the shell body, and the free ends of the elastic arms of the two groups of elastic portions are arranged towards opposite directions respectively.

[0009] Optionally, at least part of the elastic arms of at least one group of elastic portions are arranged in the axial direction of the shielding shell.

[0010] Optionally, the inner wall of the shell is further provided with a limiting structure on the side of the elastic arm facing the cable connecting part, the outer wall of the insulating part is further provided with a guide structure in the circumferential direction, the guide structure is fitted to the inner wall of the shielding shell in the circumferential direction, and the guide structure is capable of sliding relative to the shell, the guide structure abuts against the limiting structure, and the guide structure is further provided with a space-providing structure matching the elastic arm in the circumferential direction.

[0011] Optionally, the space-providing structure comprises a tangent plane provided on the guide structure.

[0012] Optionally, the cable connecting part is further provided with a limiting hole, and the outer skin of the cable is at least partially located in the limiting hole in the state of being connected with the cable connecting part.

[0013] Optionally, the core wire connecting part comprises a crimping part provided on the terminal end, the crimping part comprises a support part and two crimping wings respectively provided on both sides of the support part, and the support part and the outer peripheral wall of the terminal end are provided with a preset interval in the radial direction of the terminal.

[0014] The application further provides a coaxial connector, which comprises a shell, an insulating part, a terminal, and a shielding shell, wherein the shell is provided with a cable connecting part and a core wire connecting part, the insulating part is provided with a terminal insertion hole, the terminal is provided with a core wire connecting part, the shielding shell is provided with a shielding shell insertion hole, and the terminal is capable of being inserted into the terminal insertion hole of the insulating part and the shielding shell insertion hole of the shielding shell.

[0015] Optionally, the coaxial connector further comprises a support ring, the support ring is sleeved outside the shielding layer or the outer skin, the end of the shielding layer is provided with a flange and wraps at least part of the support ring, the support ring is located in the shielding shell, and at least part of the support ring is located in the cable connecting part.

[0016] Optionally, the end of the support ring extends into the shell of the coaxial connector.

[0017] The application further provides an assembling method of a coaxial connector, which is based on the coaxial connector described above, and the assembling method of the coaxial connector comprises the following steps: inserting the insulating part into the shell from the end of the shell of the shielding shell; connecting the core wire connecting part of the terminal with the core wire of the cable; inserting the terminal into the shielding shell, so that the terminal is located in the insulating part, and connecting the cable connecting part of the shielding shell with the cable.

[0018] Optionally, before the terminal and the cable are assembled, the assembling method of the coaxial connector further comprises the following steps: The support ring is sleeved on the shielding layer of the cable, and the flange of the shielding layer wraps at least part of the support ring; or the support ring is sleeved on the outer sheath of the cable, and the flange of the shielding layer wraps at least part of the support ring. After the cable connecting part of the shielding shell is connected with the cable, the support ring is at least partially located in the cable connecting part.

[0019] The coaxial connector, the coaxial connection assembly and the assembly method of the coaxial connection assembly provided by the present application have the following technical effects: The at least part of the elastic arms are arranged in the axial direction in a staggered manner. All the elastic arms can be arranged at different positions in the axial direction of the shielding shell, or part of the elastic arms can be arranged at the same position in the axial direction of the shielding shell, and part of the elastic arms can be arranged at different positions in the axial direction of the shielding shell.

[0020] The plurality of elastic arms can respectively provide elastic extrusion force to the male head in the plugging state in the circumferential direction. The more the number of the elastic arms is, the more stable the plugging between the male head and the coaxial connector is. In the plugging process, the male head moves in the axial direction relative to the coaxial connector and sequentially reaches the positions of the elastic arms, and the elastic arms successively bear the force of the outer wall of the male head, so that the force of the operator in the plugging process can be reduced, and the plugging operation is facilitated. Similarly, when the male head is pulled out, the male head successively releases the force of the elastic arms, and the pulling-out operation is also facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic diagram of a coaxial connection assembly provided by an embodiment of the present application; Figure 2 is a sectional view of Figure 1 Figure 3 is a structural schematic diagram of a shielding shell in Figure 1 Figure 4 is a sectional view of Figure 3 Figure 5 is a partial sectional view of a shell; Figure 6 is a partial sectional view of a shell of another embodiment; Figure 7 is a structural schematic diagram of an insulating piece in Figure 1 Figure 8 is a structural schematic diagram of an end of the insulating piece; Figure 9 is a sectional view of the insulating piece; Figure 10 is a structural schematic diagram of the coaxial connection assembly in another view; Figure 11 is​​​​Figure 10 Structure schematic view of terminal in Figure 12 Structure schematic view of terminal and cable connection state; Figure 13 Explosion view of coaxial connection assembly except cable; Figure 14 Structure schematic view of cable and support ring; Figure 15 Structure schematic view of cable and support ring of another embodiment; Figure 16 Structure schematic view of coaxial connection assembly in another perspective view; Figure 17 Flow chart of assembly method of coaxial connection assembly provided by embodiments of the application; Figure 18 Detailed flow chart of assembly method of coaxial connection assembly.

[0022] Figure Figures 1-18 In the figures, the reference signs are explained as follows: 1 Shielding shell; 11 Shell body; 12 Cable connection part; 121 Limiting hole; 13 Limiting structure; 14 Elastic part; 141 Elastic arm; 142 Free end; 143 First elastic part; 144 First elastic arm; 145 Second elastic part; 146 Second elastic arm; 15 Stamping joint; 16 Guide surface; 17 Hollow area; 2 Insulating piece; 21 Cavity; 22 Guide structure; 23 Indentation structure; 24 Flat cutting surface; 25 Stopping surface; 3 Terminal; 31 Core wire connection part; 311 Support part; 312 Crimping wing; 32 Matching structure; 4 Cable; 41 Core wire; 42 Insulating layer; 43 Shielding layer; 431 Flange; 44 Outer skin; 5 Support ring; 6 Indentation space. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0024] Embodiments of the present application provide a coaxial connector and a coaxial connection assembly, wherein the coaxial connection assembly comprises the coaxial connector and the cable 4, as shown in Figure 1 and Figure 2 The coaxial connector comprises a shielding shell 1, an insulating piece 2 and a terminal 3, wherein the shielding shell 1 has an inner cavity provided through in the axial direction, the shielding shell 1 comprises a shell body 11 and a cable connection part 12 provided in the axial direction, the insulating piece 2 is arranged in the shell body 11, the insulating piece 2 comprises a cavity 21 provided through in the axial direction, and the terminal 3 is located in the cavity 21 of the insulating piece 2.

[0025] The cable connecting portion 12 of the shielding shell 1 is used to connect with the cable 4, and the terminal 3 is further provided with a core wire connecting portion 31 used to connect with the core wire 41 of the cable 4. One end of the terminal 3 can be provided with a metal needle or a contact and located in the insulating piece 2, and the other end of the terminal 3 is provided with the core wire connecting portion 31 used to connect with the core wire 41 of the cable 4 for realizing signal transmission. The cable 4 comprises the core wire 41, an insulating layer 42, a shielding layer 43 and an outer skin 44 arranged in sequence from inside to outside, the end of the core wire 41 is exposed and connected with the core wire connecting portion 31, and the cable connecting portion 12 is wrapped and connected outside the outer skin 44.

[0026] The cable connecting portion 12 of the shielding shell 1 is connected with the outer skin 44 of the cable 4, so that the terminal 3 and the connection between the cable 4 and the terminal 3 are completely located in the shielding shell 1, the shielding shell 1 can play an electromagnetic shielding effect from the outside, prevent signal leakage or external interference, and the shielding shell 1 can also protect the insulating piece 2, the terminal 3 and the connection between the terminal 3 and the cable 4 located inside. The insulating piece 2 is arranged between the shielding shell 1 and the terminal 3 for realizing isolation between the shielding shell 1 and the terminal 3, preventing short circuit and maintaining a specific impedance to reduce signal transmission loss. The material of the insulating piece 2 is not limited, such as polytetrafluoroethylene.

[0027] The side wall of the shell 11 is provided with at least three elastic arms 141 arranged in a circumferential direction, and the elastic arms 141 can provide an elastic extrusion force in a radial direction.

[0028] The coaxial connector is formed with a female end head away from the cable 4, when the female end head is inserted with a corresponding male end head, the male end head is inserted into the inner cavity of the shielding shell 1, and each elastic arm 141 is respectively abutted to the outer wall of the male end head in a circumferential direction and provides an extrusion force in a radial direction to the outer wall of the male end head, so that the position of the male end head in the shielding shell 1 is stable, and the anti-disengagement effect is realized. The male end head and the female end head are connected by plug-in connection, which can effectively simplify the installation operation and improve the installation efficiency.

[0029] At least part of the elastic arms 141 are arranged in an axial direction, which can be that all the elastic arms 141 are completely different in the axial position of the shielding shell 1, or part of the elastic arms 141 are the same in the axial position of the shielding shell 1 and part of the elastic arms 141 are different in the axial position of the shielding shell 1.

[0030] Multiple spring arms 141 can provide elastic compressive force to the male end along the circumference when it is plugged in. The more spring arms 141 there are, the more stable the plugging with the male end. During plugging, the male end moves axially relative to the coaxial connector and sequentially reaches the position of each spring arm 141. Each spring arm 141 successively abuts against the outer wall of the male end to receive the force, which can reduce the force exerted by the operator during plugging and facilitate the plugging operation. Similarly, when the male end is pulled out, the male end successively releases the force from each spring arm 141, and the pull-out operation is also convenient.

[0031] like Figure 4 As shown, the side wall of the housing 11 is provided with two sets of elastic parts 14. Each set of elastic parts 14 includes at least three spring arms 141 arranged circumferentially along the housing 11. The free ends 142 of the spring arms 141 of the two sets of elastic parts 14 are arranged in opposite directions. The spring arms 141 of the two sets of elastic parts 14 are staggered in the axial direction of the shielding shell 1. This arrangement can increase the number of spring arms 141, improve the elastic contact force with the male end, improve the insertion stability, and facilitate the insertion and removal operation of the male end, which is more labor-saving.

[0032] The structure of the spring arm 141 is not limited, such as Figure 3 As shown, the spring arm 141 can be integrally formed on the inner sidewall of the shielding shell 1, and formed by bending inward after stamping the sidewall. The free end 142 of the spring arm 141 extends towards the axial direction of the shielding shell 1, and the end face of the free end 142 has a rounded transition structure to abut against the outer wall of the male end, so as to avoid jamming during insertion and removal, and also to avoid damage to the outer wall surface of the male end during insertion and removal. Alternatively, the spring arm 141 can also be a structure independent of the shell 11 and fixed to the sidewall inside the shell 11 by welding or other means.

[0033] The arrangement of the spring arms 141 of the two sets of elastic parts 14 is not limited. For example, the spring arms 141 of each set of elastic parts 14 may be in the same axial position in the shielding shell 1, and the spring arms 141 of the two sets of elastic parts 14 may be staggered along the axial direction. Alternatively, at least some spring arms 141 of each set of elastic parts 14 may be staggered in the axial position in the shielding shell 1. Or, the spring arms 141 of one set of elastic parts 14 may be in the same axial position in the shielding shell 1, so as to provide a uniform elastic compressive force in the circumferential direction to the male end at a specific position in the axial direction of the shielding shell 1. At least some spring arms 141 of the other set of elastic parts 14 may be staggered in the axial direction of the shielding shell 1. By setting multiple spring arms 141, the insertion stability can be improved, the insertion and extraction force can be reduced, and the operation can be facilitated.

[0034] The number of elastic arms 141 of each elastic part 14 is the same, and the elastic arms 141 of the two groups of elastic parts 14 can be arranged in sequence and staggered along the circumferential direction of the shielding shell 1, facilitating spatial arrangement. Of course, the number of elastic arms 141 of each elastic part 14 can also be different, which can be set according to actual conditions.

[0035] For convenience of description, the two groups of elastic parts 14 are respectively referred to as a first elastic part 143 and a second elastic part 145, wherein the elastic arms 141 of the first elastic part 143 are first elastic arms 144, the elastic arms 141 of the second elastic part 145 are second elastic arms 146, and the free ends 142 of the first elastic arms 144 and the free ends 142 of the second elastic arms 146 are oppositely arranged.

[0036] It can be as shown in Figure 5 , the positions of each first elastic arm 144 in the axial direction of the shielding shell 1 are the same, the positions of each second elastic arm 146 in the axial direction of the shielding shell 1 are the same, and the first elastic arm 144 and the second elastic arm 146 are arranged in the axial direction of the shielding shell 1. staggered; It can also be as shown in Figure 6 , the positions of each first elastic arm 144 in the axial direction of the shielding shell 1 are the same, and at least part of the second elastic arm 146 is arranged in the axial direction of the shielding shell 1. staggered.

[0037] It can be that the free end 142 of the first elastic arm 144 is arranged towards one side of the cable connecting part 12, and the free end 142 of the second elastic arm 146 is arranged towards the side away from the cable connecting part 12, or it can also be that the free end 142 of the first elastic arm 144 is arranged towards the side away from the cable connecting part 12, and the free end 142 of the second elastic arm 146 is arranged towards the side of the cable connecting part 12.

[0038] As shown in Figure 2 and Figure 4 , the inner wall of the shell 11 is further provided with a limiting structure 13 along the axial direction of the shielding shell 1, and the limiting structure 13 is located on the side of the elastic arm 141 towards the cable connecting part 12. The outer wall of the insulating part 2 is further provided with a guide structure 22 along the circumferential direction, the guide structure 22 is attached to the inner wall of the shielding shell 1 along the circumferential direction, and the guide structure 22 can slide relative to the shell 11.

[0039] When installing, the insulating piece 2 is inserted into the shell 11 from the side end of the shell 11 away from the cable connecting part 12, and in the process of insertion, the guide structure 22 can slide along the circumference and be attached to the inner wall of the shell 11 to provide a guiding effect for the insertion of the insulating piece 2, avoiding the occurrence of the inclination of the insulating piece 2. When the insulating piece 2 is inserted to the abutment of the guide structure 22 and the limiting structure 13, the insulating piece 2 is inserted in place, and then the side wall of the shell 11 can be punched to make the side wall of the shell 11 protrude inward to form a recess structure on the outside and a protrusion structure on the inside, and the fixing between the two is realized by the abutment of the protrusion structure and the insulating piece 2. The number and position of the punches are not limited and can be set according to the actual situation.

[0040] The guide structure 22 can provide a guiding effect during the assembly of the insulating piece 2 and the shielding shell 1, and can also provide an axial positioning effect for the insulating piece 2 after insertion to ensure the stability of the radial position between the insulating piece 2 and the shell 11.

[0041] As shown in Figure 2 and Figure 7 , the guide structure 22 is also provided with a space structure 23 adapted to the elastic arm 141 in the circumferential direction. The space structure 23 and the inner wall of the shell 11 form a space 6 during the insertion of the insulating piece 2, and each elastic arm 141 has a corresponding space 6 to avoid damage to the elastic arm 141 during the insertion of the insulating piece 2, thereby providing protection for the elastic arm 141 and ensuring the stability of the elastic abutment between the elastic arm 141 and the male head.

[0042] When the number of the first elastic arm 144 and the second elastic arm 146 is consistent, each first elastic arm 144 and each second elastic arm 146 can be one-to-one corresponding, and the corresponding first elastic arm 144 and second elastic arm 146 are arranged close to each other in the circumferential direction of the shielding shell 1 to form an elastic arm group. In this way, the space structure 23 and the elastic arm group can be arranged in a consistent and corresponding manner, reducing the number of space structures 23 and simplifying the structure of the insulating piece 2.

[0043] As shown in Figure 5 and Figure 6 , the side wall of the shell 11 is provided with a hollow area 17, and the corresponding first elastic arm 144 and second elastic arm 146 are located in the same hollow area 17. When producing the shielding shell 1, the area where the hollow area 17 of the side wall of the shell 11 is located is formed by stamping to form two elastic arms 141 with free ends 142 facing opposite directions. In this way, the forming process of the first elastic arm 144 and the second elastic arm 146 can be simplified.

[0044] In the embodiment, the number of the first elastic arms 144 and the second elastic arms 146 is not limited, and the number of the first elastic arms 144 and the second elastic arms 146 can be three. The coaxial connector is limited by the six elastic arms 141 and the male head, which can ensure the stability of the connection, reduce the plugging force, and facilitate the plugging operation between the coaxial connector and the male head. Alternatively, the number of the first elastic arms 144 and the second elastic arms 146 can also be other numbers, which are not limited here.

[0045] In the embodiment, the limiting structure 13 on the inner wall of the limiting shell 11 is not limited, and can be as shown in Figure 3 , the side wall of the shell 11 is convex in the radial direction to form a limiting step, or the inner wall of the shell 11 can also be provided with a plurality of protrusions convex in the radial direction, and each protrusion can be arranged in the circumferential direction.

[0046] The guiding structure 22 and the giving structure 23 are not limited, such as Figure 7 , Figure 8 and Figure 9 In the embodiment, the guiding structure 22 is a cylindrical structure, and the giving structure 23 is formed by the tangent plane 24 arranged in the axial direction. When the insulating part 2 is inserted into the shielding shell 1, the tangent plane 24 corresponds to the elastic arm 141, the elastic arm 141 and the inner wall of the shielding shell 1 form a giving space 6, and the elastic arm 141 is located in the giving space 6, thereby protecting the elastic arm 141. The tangent plane 24 forms the giving structure 23, which can simplify the overall structure of the insulating part 2, simplify the forming process of the giving structure 23, and ensure the structural strength of the guiding structure 22, the stability of the guiding effect and the stability of the abutting cooperation with the limiting structure 13.

[0047] Alternatively, the guiding structure 22 can also be provided with a groove structure in the axial direction to form the giving structure 23, or the insulating part 2 can also be provided with at least three guiding blocks in the circumferential direction, each guiding block is arranged in the radial direction of the insulating part 2 and abuts with the inner wall of the shielding shell 1, and the gap between the adjacent two guiding blocks forms the giving structure 23.

[0048] The insulating part 2 is inserted into the shell 11 from the side end of the shell 11 away from the cable connecting part 12, as shown in Figure 5 and Figure 6 The end inner wall of the shell 11 is provided with a guiding surface 16, so that the inner wall of the end of the shell 11 is gradually expanded in the axial direction, and the guiding surface 16 can guide the insertion of the insulating part 2 and the shell 11, and improve the assembly efficiency. Of course, the end outer wall of the insulating part 2 can also be provided with a guiding surface 16.

[0049] During assembly, the terminal is inserted into the shielding shell 1 from the side facing the cable connection part 12, and then inserted into the cavity 21 of the insulating part 2, as shown. Figure 9 As shown, the inner wall of the insulating component 2 is also provided with a stop surface 25, which is disposed on the side facing the cable connection portion 12. The outer wall of the terminal 3 is also provided with a mating structure 32. When the terminal 3 is inserted into the cavity 21 of the insulating component 2 until the mating structure 32 abuts against the stop surface 25, it is inserted into place. The stop surface 25 can be a stepped surface or a surface like... Figure 9 The tapered surface shown also guides the insertion of terminal 3, improving assembly efficiency. Furthermore, the tapered surface ensures coaxiality between terminal 3 and insulating component 2 after insertion, thereby enhancing high-frequency performance.

[0050] like Figure 10 As shown, the cable connector 12 is also provided with a limiting hole 121. When the cable connector 12 and the cable 4 are connected, the outer sheath 44 of the cable 4 is at least partially located in the limiting hole 121, thereby achieving axial limiting between the cable 4 and the shielding shell 1, thereby improving the connection stability between the coaxial connector and the cable 4 and providing good anti-detachment performance.

[0051] The cable connector 12 is crimped around the cable 4 to connect with the cable 4. During the crimping process, the outer sheath 44 of the cable 4 is subjected to pressure and is partially squeezed outward through the limiting hole 121, so that the outer sheath 44 of the cable 4 is at least partially located inside the limiting hole 121 to play a role in limiting and preventing detachment.

[0052] The cable connector 12 is connected and fixed to the cable 4 by crimping, which can flexibly adapt to cables 4 of different specifications, thereby reducing the quantity of production materials required and reducing costs.

[0053] like Figure 11 As shown, the core wire connection part 31 includes a crimping part located at the end of the terminal 3. The crimping part includes a support part 311 and two crimping wings 312. The two crimping wings 312 are located on both sides of the support part 311. When connecting with the core wire 41, the core wire 41 is placed on the support part 311, and the two crimping wings 312 are crimped to the core wire 41 to achieve the connection. The core wire connection part 31 is connected and fixed to the core wire 41 by crimping, which can adapt to cables 4 with different specifications of core wire 41, thereby reducing the quantity of production materials required and reducing costs.

[0054] The support portion 311 can be aligned radially with the peripheral sidewall at the end of the terminal 3, or it can be as follows: Figure 11 As shown, the peripheral sidewalls of the support portion 311 and the end of the terminal 3 are provided with a preset distance L in the radial direction, so that when the core wire 41 is crimped with the crimping portion, as shown... Figure 12 As shown, cable 4 and terminal 3 are arranged coaxially, thereby improving high-frequency performance.

[0055] The size of the preset interval L can be set according to the size of the actual terminal 3 and the cable 4. In addition, the support part 311 can be located on the side of the peripheral wall of the end part of the terminal 3 close to the axis of the terminal 3, or can be located on the side of the peripheral wall of the end part of the terminal 3 away from the axis of the terminal 3.

[0056] As shown in Figure 13 , the coaxial connector assembly further comprises a support ring 5, which is sleeved outside the shielding layer 43 or the outer skin 44. The end part of the shielding layer 43 is provided with a flange 431 and wraps at least part of the support ring 5 to ensure the stability of the axial position between the support ring 5 and the cable 4. The support ring 5 is located in the shielding shell 1 and at least part of it is located in the cable connecting part 12. When the cable connecting part 12 is connected (crimped) with the cable 4, the support ring 5 can provide support to ensure the stability of the crimped connection and also avoid damage to the cable 4.

[0057] When the cable 4 is a relatively thick cable 4, as shown in Figure 14 , the outer skin 44 at the position corresponding to the support ring 5 of the cable 4 can be removed and exposed to the shielding layer 43 to reduce the diameter at this position. The support ring 5 is sleeved outside the shielding layer 43 and wraps at least part of the flange 431 of the shielding layer 43.

[0058] When the cable 4 is a relatively thin cable 4, as shown in Figure 15 , the outer skin 44 at the position corresponding to the support ring 5 of the cable 4 does not need to be removed. The support ring 5 is directly sleeved outside the outer skin 44 and wraps at least part of the flange 431 of the shielding layer 43.

[0059] The side end part of the cable 4 for connecting with the coaxial connector has the longest length of the core wire 41 extending out for connecting with the core wire connecting part 31. The shielding layer 43 also exposes the outer skin 44 for wrapping the support ring 5 through the flange 431.

[0060] The support ring 5 can be applied to different specifications of the cable 4, has good flexibility, can reduce the number of production materials required, and reduce costs. In addition, the support ring 5 is used to provide support for the crimping between the cable connecting part 12 and the cable 4. The support ring 5 can be a cylindrical structure, and the side wall thereof can be provided with a hollow structure.

[0061] The shielding shell 1, the terminal 3 and the support ring 5 of the coaxial connector provided in the embodiments of the present application can be applied to different specifications of the cable 4. Therefore, when the specification of the cable 4 changes, the shielding shell 1, the terminal 3, the support ring 5 and other components do not need to be changed, the structure related to high frequency is consistent, and the high frequency performance is stable.

[0062] As shown in Figure 2 and Figure 16As shown, the end of the support ring 5 extends into the shell 11 of the shielding shell 1, that is, the support ring 5 is partially located in the shell 11 and partially located in the cable connecting portion 12. Since the area between the shell 11 and the cable connecting portion 12 is connected by only one side wall portion, the structural strength of this area is relatively weak. By extending the end of the support ring 5 into the shell 11, the structural strength of the area between the shell 11 and the cable connecting portion 12 can be enhanced, the overall rigidity of the coaxial connector can be improved, and bending damage can be prevented.

[0063] As shown in Figure 16 , the shell 11 of the shielding shell 1 has a stamping joint 15 in the axial direction, and a dovetail groove and a dovetail block are provided at the stamping joint 15 to improve the connection strength at the stamping joint 15, thereby improving the overall structural strength of the shell 11 of the shielding shell 1.

[0064] The embodiment of the present application also provides an assembling method of a coaxial connection assembly, based on the coaxial connection assembly described above, as shown in Figure 17 , the assembling method comprises the following steps: S1: inserting the insulating piece 2 into the shell 11 from the end of the shell 11 of the shielding shell 1.

[0065] In step S1 of assembling the insulating piece 2 and the shielding shell 1, the end of the shell 11 refers to the side end of the shell 11 away from the cable connecting portion 12. The insertion of the insulating piece 2 into the shell 11 can provide a guiding effect through the guiding structure 22, and the elastic arm 141 of the side wall of the shell 11 can be relieved through the relief space 6 formed by the relief structure 23 and the inner wall of the shell 11 to prevent damage to the elastic arm 141 and ensure the stable elastic abutting effect between the elastic arm 141 and the male head in the future. When the insulating piece 2 is inserted and assembled to abut against the guiding structure 22 and the limiting structure 13, the side wall of the shell 11 can be marked to have a protruding structure protruding inward, and the protruding structure can abut against the insulating piece 2 to achieve fixation between the insulating piece 2 and the shell 11.

[0066] S2: connecting the core wire connecting portion 31 of the terminal 3 with the core wire 41 of the cable 4.

[0067] In step S2 of assembling the terminal 3 and the cable 4, the core wire connecting portion 31 is a crimping portion provided at the end of the terminal 3, and the crimping portion is connected with the core wire 41 through crimping to adapt to cables 4 of different specifications and have good flexibility.

[0068] The sequence of step S1 and step S2 is not limited, and step S1 can be performed first and then step S2 can be performed, or step S2 can be performed first and then step S1 can be performed, or step S1 and step S2 can be performed simultaneously.

[0069] S3: inserting the terminal 3 into the shielding shell 1, so that the terminal 3 is located in the insulating piece 2, and connecting the cable connecting portion 12 of the shielding shell 1 with the cable 4.

[0070] Step S3 involves assembling the shield shell 1 and insulating component 2 assembly formed in step S1, and the terminal 3 and cable 4 assembly formed in step S2 together. The terminal 3 is inserted into the shield shell 1 from the side of the shield shell 1 facing the cable connection part 12, so that the insulating component 2 is located between the shell 11 and the terminal 3, so as to play an insulating role between the two.

[0071] After the terminal 3 is inserted into place, the cable connection part 12 of the shielding shell 1 is crimped to the cable 4 to ensure the connection stability between the shielding shell 1 and the cable 4, while also ensuring the shielding effect of the shielding shell 1.

[0072] The cable connector 12 may also be provided with a limiting hole 121. After the cable connector 12 and the cable 4 are crimped together, the outer sheath 44 of the cable 4 is squeezed out through the limiting hole 121 to achieve limiting and prevent the shielding shell 1 and the cable 4 from separating, thus improving stability.

[0073] like Figure 18 As shown, before assembling terminal 3 and cable 4 in step S2, the assembly method of the coaxial connection assembly further includes: S11: The support ring 5 is fitted over the shielding layer 43 of the cable 4, and the flange 431 of the shielding layer 43 is wrapped around at least part of the support ring 5; or, the support ring 5 is fitted over the outer sheath 44 of the cable 4, and the flange 431 of the shielding layer 43 is wrapped around at least part of the support ring 5.

[0074] In step S11, the support ring 5 and the cable 4 are assembled. After the cable connection portion 12 of the shielding shell 1 is connected to the cable 4 in step S3, the support ring 5 is at least partially located inside the cable connection portion 12. When the cable connection portion 12 is connected to the cable 4 (crimp connection), the support ring 5 can provide support, ensuring the stability of the crimp connection while also preventing damage to the cable 4.

[0075] When cable 4 is a cable with a relatively large diameter, such as Figure 14 As shown, in step S11, the outer sheath 44 of the cable 4 at the position corresponding to the support ring 5 can be removed to expose the shielding layer 43, thereby reducing the diameter at this point. The support ring 5 is fitted over the shielding layer 43, and the flange 431 of the shielding layer 43 is wrapped around at least part of the support ring 5.

[0076] When cable 4 is a cable with a relatively thin diameter, such as Figure 15 As shown, in step S11, the outer sheath 44 of the cable 4 at the position corresponding to the support ring 5 does not need to be removed. The support ring 5 is directly sleeved on the outer sheath 44, and the flange 431 of the shielding layer 43 is wrapped around at least part of the support ring 5.

[0077] The support ring 5 can be suitable for cables 4 of different specifications, has good flexibility, can reduce the number of production materials required, and can reduce costs.

[0078] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0079] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0080] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0081] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0082] In the description of the specification, the description using the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "first", "second", "third", etc. are used herein merely as identifiers for the various embodiments or examples, and are not intended to denote a spatial or chronological priority or order.

[0083] The above merely preferred embodiments of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. A coaxial connector, characterized by, The coaxial connector comprises a shielding shell (1), an insulating piece (2) and a terminal (3); The shielding shell (1) comprises a shell (11) arranged in the axial direction and a cable connecting part (12), and the side wall of the shell (11) is provided with at least three elastic arms (141) arranged in the circumferential direction at intervals, and at least part of the elastic arms (141) are arranged in the axial direction of the shell (11) at intervals. The insulating piece (2) is arranged in the shell (11), the insulating piece (2) has a cavity (21), the terminal (3) is arranged in the cavity (21), and the terminal (3) is further provided with a core wire connecting part (31).

2. The coaxial connector of Claim 1, wherein, The side wall of the shell (11) is provided with two groups of elastic parts (14), the elastic part (14) comprises at least three elastic arms (141) arranged in the circumferential direction of the shell (11) at intervals, and the free ends (142) of the elastic arms (141) of the two groups of elastic parts (14) are arranged towards opposite directions respectively.

3. The coaxial connector of Claim 2, wherein, At least part of the elastic arms (141) of at least one group of elastic parts (14) are arranged in the axial direction of the shielding shell (1) at intervals.

4. The coaxial connector of any of claims 1-3, wherein, The inner wall of the shell (11) is further provided with a limiting structure (13), the limiting structure (13) is located on the side of the elastic arm (141) towards the cable connecting part (12), the outer wall of the insulating piece (2) is further provided with a guide structure (22) in the circumferential direction, the guide structure (22) is attached to the inner wall of the shielding shell (1) in the circumferential direction, and the guide structure (22) can slide relative to the shell (11), the guide structure (22) abuts against the limiting structure (13), and the guide structure (22) is further provided with a giving-up structure (23) matched with the elastic arm (141) in the circumferential direction.

5. The coaxial connector of Claim 4, wherein, The giving-up structure (23) comprises a tangent plane (24) arranged on the guide structure (22).

6. The coaxial connector of any one of claims 1-3, wherein, The cable connecting part (12) is further provided with a limiting hole (121), and in the connected state of the cable connecting part (12) and the cable (4), the outer skin (44) of the cable (4) is at least partially arranged in the limiting hole (121).

7. The coaxial connector of any of claims 1-3, wherein, The core wire connecting part (31) comprises a crimping part arranged at the end of the terminal (3), the crimping part comprises a supporting part (311) and two crimping wings (312) arranged on both sides of the supporting part (311) respectively, and the supporting part (311) and the outer circumferential wall of the end of the terminal (3) are arranged at a predetermined interval in the radial direction of the terminal (3).

8. A coaxial connector assembly comprising: The coaxial connector comprises a cable (4) and the coaxial connector according to any one of claims 1-7, the cable (4) comprises a core wire (41), an insulating layer (42), a shielding layer (43) and an outer skin (44) arranged in sequence from inside to outside, the end of the core wire (41) is connected with the core wire connecting part (31) of the coaxial connector, and the cable connecting part (12) of the coaxial connector is wrapped and connected outside the outer skin (44).

9. The coaxial connector assembly of claim 8, wherein, The coaxial connector assembly further comprises a support ring (5) sleeved outside the shielding layer (43) or the outer skin (44), the end of the shielding layer (43) is provided with a flange (431) and wraps at least part of the support ring (5), the support ring (5) is located in the shielding shell (1) and at least part of the support ring (5) is located in the cable connecting portion (12).

10. The coaxial connector assembly of claim 9, wherein, The end of the support ring (5) extends into the housing (11) of the coaxial connector.

11. A method of assembling a coaxial connector assembly according to claim 8 or 9, characterized in that The assembling method of the coaxial connector assembly comprises: inserting the insulating member (2) into the housing (11) from the end of the housing (11) of the shielding shell (1); connecting the core wire connecting portion (31) of the terminal (3) with the core wire (41) of the cable (4); inserting the terminal (3) into the shielding shell (1), locating the terminal (3) in the insulating member (2), and connecting the cable connecting portion (12) of the shielding shell (1) with the cable (4).

12. The method of assembling a coaxial connector assembly of claim 11, wherein, Before assembling the terminal (3) and the cable (4), the assembling method of the coaxial connector assembly further comprises: sleeving the support ring (5) outside the shielding layer (43) of the cable (4) and wrapping the flange (431) of the shielding layer (43) with at least part of the support ring (5); or sleeving the support ring (5) outside the outer skin (44) of the cable (4) and wrapping the flange (431) of the shielding layer (43) with at least part of the support ring (5); After connecting the cable connecting portion (12) of the shielding shell (1) with the cable (4), at least part of the support ring (5) is located in the cable connecting portion (12).

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