Floating type multi-core coaxial plug and connector

Abstract

The invention provides a floating type multi-core coaxial plug and a connector, the plug comprises a first shell, a first medium body and a multi-core cable fixing assembly, the first medium body and the multi-core cable fixing assembly are arranged at the two ends of the first shell, and the first medium body extends out of the first shell and is used for being in socket connection with a socket; a first spring in a pre-pressing state is arranged in the first shell, one end of the first spring abuts against the first medium body, the external force needed for compressing the first spring to the pre-pressing state is not smaller than the external force needed for completing plugging of the plug, and when the plug is normally plugged, the first spring is kept in the pre-pressing state, and the second spring is kept in the pre-pressing state. And when the plug is over-inserted, the medium body I retreats into the shell I to compress the spring I. The pre-pressed spring is arranged, the pre-tightening force is larger than a normal insertion and extraction force threshold value, the problem of poor butt joint caused by the fact that the spring is prone to retreat due to normal butt joint is solved, meanwhile, when a machine pushes the male connector to be inserted into the female connector to exceed the limit butt joint stroke, the spring is compressed, and the poor problems of butt joint collision damage and the like caused by assembly clearance errors are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to a floating multi-core coaxial plug and a connector. Background Art

[0002] With the continuous development of oil exploration, its electrical transmission current carrying capacity and transmission system are developing towards integration. Electrical components not only meet the requirements of electrical and signal transmission, but also have the functions of structural parts.

[0003] Especially in the application of connectors in the field of oil exploration, in order to meet the consistency and reliability requirements of docking and socketing, machines are used to uniformly plug and unplug connectors. However, the plug-in control of machine plug-in and unplug connectors may cause excessive plug-in force, resulting in over-insertion and structural damage. Summary of the invention

[0004] This application analyzes that the control of machine plugging and unplugging connectors is based on the actuator combined with sensor feedback to determine the plug-in status, and force feedback is mostly used. In addition, the machine plugging and unplugging will plug and unplug multiple connectors at the same time, which will cause the sensor plugging process to use a force greater than that required for normal plugging to ensure that all connectors are plugged in at the same time. This will lead to over-plugging and damage to the electrical connector structure. In response to the above technical problems, a floating multi-core coaxial plug and connector are proposed, and the specific technical solutions are as follows: In a first aspect, the present application provides a floating multi-core coaxial plug, the plug comprising a housing 1, and a dielectric body 1 and a multi-core cable fixing assembly arranged at both ends of the housing 1, the dielectric body 1 extending out of the housing 1 for socket connection; A spring 1 in a pre-tightened state is disposed in the shell 1, one end of the spring 1 is pressed against the dielectric body 1, and the external force required to compress the spring 1 to the pre-tightened state is not less than the external force required for the plug to complete the insertion. When the plug is normally inserted, the spring 1 maintains the pre-tightened state. When the plug is over-inserted, the dielectric body 1 retreats into the shell 1 to compress the spring 1.

[0005] Preferably, the two ends of the shell one have opening one and opening two, a hollow cavity is formed between the opening one and opening two, and a step surface is provided at one of the openings; the dielectric body one is pressed into the hollow cavity from the opening two and then extends out from the opening one, and has a segment six that abuts against the step surface.

[0006] Preferably, the opening 1 is provided with a flat opening 1, and the side wall of the dielectric body 1 is provided with a flat opening 2, and when the dielectric body 1 is pressed into the step surface of the segment 6, the flat opening 2 is fitted to the flat opening 1 to restrict the rotation of the dielectric body 1, and when the plug is over-inserted to make the dielectric body 1 retreat into the housing 1, the flat opening 2 remains fitted to the flat opening 1; And / or, a groove 2 is arranged on the outer wall of the segment 6, a sealing ring 1 is arranged in the groove 2, and the sealing ring 1 forms a radial sliding seal between the medium body 1 and the shell 1.

[0007] Preferably, a segment 1 is provided on the end surface of the dielectric body 1 extending out of the shell 1, and the dielectric body 1 has a hollow cavity running through segments 1 to 6. An isolation ring 1, a conductive ring and a conductive screw are installed on the segment 1, and the isolation ring 1 and the conductive ring are alternately mounted on the outside of the segment 1. The conductive screw cooperates with the round nut to fix and press the isolation ring 1 and the conductive ring at the end of the segment 1.

[0008] Preferably, the segment 1 limits the rotation of the isolation ring 1 and the conductive ring through the cooperation of the convex key and the keyway; And / or, the isolation ring 1 and the conductive ring are provided with through holes for passing cables, the dielectric body 1 is also provided with through holes for passing cables, and the through holes on the dielectric body 1 are connected to the hollow cavity inside the dielectric body 1, and the through holes on the isolation ring 1 and the conductive ring correspond to the through holes on the dielectric body 1; And / or, the end of the nail rod of the conductive screw extending into the interior of the dielectric body has a blind hole for fixing the cable.

[0009] Preferably, the multi-core cable fixing assembly is embedded with a jack fitting, the multi-core cable fixing assembly is pressed into the hollow cavity through opening two, the multi-core cable fixing assembly comprises a base one and a tail away from opening one, a dielectric body two is sleeved on the tail, a threaded blind hole is provided on the outer side wall of the dielectric body two, a radially extending through hole one is provided on the shell one, and top screws are provided in the threaded blind hole and the through hole one to fix the dielectric body two.

[0010] Preferably, the dielectric body 2 limits the rotation of the multi-core cable fixing assembly by cooperating with a convex key and a key slot; And / or the inner wall of the second opening is provided with a groove 1, and the groove 1 is embedded with a C-shaped retaining ring to resist the dielectric body 2; And / or, a sealing ring 2 is provided on the outer wall of the base 1 to form a radial seal; And / or, a thin-walled flange is provided on the end surface of the base 1, a gap is provided between the flange and the inner wall of the shell 1, and the other end of the spring 1 is embedded in the gap.

[0011] In a second aspect, the present application provides a floating multi-core coaxial connector, comprising a plug and a socket, wherein the plug and the socket are pluggable and connected, and the plug is a floating multi-core coaxial plug as described above; The socket comprises a second housing and a contact assembly mounted on two ends of the housing; One end of the shell body 2 is provided with an opening 4, the opening 4 is extended along the axial direction to form a hollow section 3, and the end of the hollow section 3 is a step surface; The contact assembly includes a dielectric body three pressed at the end of the hollow section three, a dielectric body four fixed at the four openings, and a contact ring and an isolation ring two alternately overlapped between the dielectric body three and the dielectric body four; the dielectric body three, the contact ring and the isolation ring two are all provided with through holes for passing cables and corresponding in position.

[0012] Preferably, a flat opening four is provided on the inner wall of the through hole in the center of the dielectric body four, and a flat opening three is provided on the side wall of the dielectric body one. When the plug and the socket are fully plugged in, the flat opening three fits against the flat opening four to limit the rotation of the plug and the socket.

[0013] Preferably, the second shell restricts the rotation of the third medium body by means of a convex key and a keyway, and the third medium body, the contact ring and the second isolation ring restrict each other's rotation by means of a convex key and a keyway. The dielectric body 4 includes a base 2 and a connecting part, the connecting part is screwed and fixed to the opening 4, and the center of the dielectric body 4 has a through hole that penetrates the base 2 and the connecting part.

[0014] Preferably, a sealing ring 4 is embedded on the inner wall of the through hole of the dielectric body 4; And / or, a blind hole is provided on the outer end surface of the second base; And / or, a sealing ring three is provided between the base two and the end surface of the opening four.

[0015] Preferably, the contact ring has a plurality of spring sheets distributed in a ring array, the spring sheets are folded inwards, and the spring sheets are an integrated contact structure that is stamped and rolled by a mold and then heat-treated.

[0016] Preferably, in the present application, a proper amount of silicone rubber is applied to the welding points of the cables inside the plug and the socket to protect the welding points. No glue is required in other spaces to meet the sealing and pressure-bearing performance. The joints of each part are mechanically locked, with good disassembly performance, which facilitates maintenance and replacement of parts.

[0017] Preferably, in the present application, the conductive contact material of the connector is gold-plated beryllium copper, the non-metallic dielectric body is PEEK insulating material, the rubber part is fluororubber, and the non-contact metals are all made of stainless steel. These materials are resistant to salt spray, mold, and high temperature environments and have good adaptability.

[0018] The beneficial effects of the present invention are: (1) The connector has an over-insertion protection function. When the machine provides a large insertion and extraction force during unified insertion, a pre-loaded spring is set in the socket. Its pre-load force is greater than the normal insertion and extraction force threshold. Therefore, normal docking will not cause poor docking caused by the spring easily giving way. At the same time, when the machine pushes the male connector to insert the female connector beyond the limit docking stroke, the spring is compressed, adjusting the bad problems such as docking collision caused by the assembly gap error; (2) The connector structure uses a keyway with a convex key and a pin structure to prevent the male and female connectors from rotating from the input to the output end, thereby preventing the internal cable from twisting and affecting reliability; (3) When the connectors are docked, the plug and the socket are designed with a flat-mouth structure to prevent the dielectric body and the contact component from rotating against each other, thus avoiding damage to the contact surface caused by micro-friction caused by mutual rotation in a high-frequency vibration environment during connection, which is beneficial to improving the service life of the product; (4) The contact ring inside the socket has an inward-turned spring structure, which is formed by die stamping and rolling and then heat-treated to strengthen it. Compared with the conventional split-type oblique spring structure, this one-piece elastic spring contact structure has a greater contact positive pressure and can transmit a greater current. It solves the problems of unstable shape of conventional oblique springs during plugging and unplugging, easy falling off of the oblique spring, and poor docking reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure diagram of the plug in the embodiment 1 is shown; Figure 2 The structure diagram of the housing 1 in the embodiment 1 is shown; Figure 3 The structure diagram of the dielectric body 1 in Example 1 is shown; Figure 4 It is a schematic diagram showing the state of installing other components on the first segment in Example 1; Figure 5 The structure diagram of the isolation ring 1 in the embodiment 1 is shown; Figure 6 What is shown is a schematic diagram of the structure of the conductive ring in Example 1; Figure 7 Shown is a schematic diagram of the structure of the conductive screw in Example 1; Figure 8 The diagram shows the structure of the round nut matched with the conductive screw in Example 1; Fig. 9 It shows the installation schematic diagram of the multi-core cable fixing assembly 1 at the second opening in Example 1; Fig.10 The structure diagram of the multi-core cable fixing assembly 1 in Example 1 is shown; Fig.11 The structure diagram of the dielectric body 2 in Example 1 is shown; Fig.12 Shown is a schematic diagram of the structure of the socket in Example 2; Fig.13 The structure diagram of the housing 2 in the second embodiment is shown; Fig.14 The figure shows the assembly schematic diagram of the contact assembly in the hollow section 3 in the embodiment 2; Fig.15 The structure diagram of the dielectric body 3 in Example 2 is shown; Fig.16 The diagram shows the structure of the contact ring installed in the groove 1 in the second embodiment; Fig.17 The structure diagram of the contact ring installed outside the dielectric body 3 in Example 2 is shown; Fig.18 The structure diagram of the isolation ring 2 in Example 2 is shown; Fig.19 The structure diagram of the dielectric body 4 in Example 2 is shown; Reference numerals: 100, housing 1; 101, opening 1; 102, opening 2; 103, flat mouth 1; 104, groove 1; 105, through hole 1; 110, dielectric body 1; 111, segment 1; 112, segment 2; 113, segment 3; 114, segment 4; 115, segment 5; 116, segment 6; 116a, groove 2; 116b, sealing ring 1; 115a, flat mouth 2; 113a, flat mouth 3; 112a, through hole 2; 111a, convex key 1; 121, isolation ring 1; 121a, through hole 3; 121b, through hole 4; 121c, Keyway 1; 122, conductive ring; 122a, through hole 5; 122b, through hole 6; 122c, keyway 2; 123, conductive screw; 123a, external thread 1; 123b, blind hole 1; 124, round nut; 124a, internal thread 1; 124b, keyway 3; 125, spring washer 1; 130, spring 1; 140, multi-core cable fixing assembly 1; 140a, base 1; 140b, tail; 140c, sealing ring 2; 140d, convex key 2; 140e, flange; 141, dielectric body 2; 141a, through hole 7; 141b, keyway four; 141c, threaded blind hole; 142, C-type retaining ring; 143, socket joint; 144, top screw; 200, shell two; 201a, opening three; 201b, opening four; 202a, hollow section one; 202b, hollow section two; 202c, hollow section three; 203a, groove three; 203b, through hole eight; 204a, internal thread two; 204b, convex key three; 204c, groove four; 210, contact assembly; 211, dielectric body three; 211a, keyway five; 211b, through hole nine; 211c, wiring groove; 211d, groove one ; 211e, keyway six; 212, contact ring; 212a, groove two; 212b, convex key four; 212c, spring; 212d, keyway seven; 213, isolation ring two; 213a, groove three; 213b, convex key five; 214, dielectric body four; 214a, base two; 214b, connecting part; 214c, external thread two; 214d, through hole ten; 214e, blind hole two; 214f, groove five; 214g, flat mouth four; 215, sealing ring three; 216, spring washer two; 217, sealing ring four; 220, multi-core cable fixing component two. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Example 1

[0021] This embodiment describes a floating multi-core coaxial connector, which, as a part of a connector, can be a plug (also called a male connector) or a socket (also called a female connector).

[0022] by Figure 1 The plug structure shown in the figure is exemplarily described, the floating multi-core coaxial connector includes a housing 100, a dielectric body 110 arranged at one end of the housing 100, and a multi-core cable fixing assembly 140 arranged at the other end of the housing 100, wherein the dielectric body 110 is used for docking with a socket matched therewith, and the multi-core cable fixing assembly 140 is used for fixing multiple coaxial cables; the housing 100 is also provided with a spring 130, the spring 130 is confined in the housing 100, and one end of the spring 130 abuts against the dielectric body 110 in a pre-tightened state, and the dielectric body The spring 110 can float along the expansion and contraction direction of the spring 130. The spring 130 in the pre-compression state has a pre-tightening force and can provide an initial elastic force. The initial elastic force is greater than the external force required for the normal insertion of the plug, that is, the spring 130 will not be compressed during normal insertion, ensuring that the plug can be reliably docked. When the external force of the insertion causes a damaging over-travel, the spring 130 will be compressed, causing the dielectric body 110 to partially retreat into the shell 100, thereby avoiding excessive compression of the dielectric body 110 in the mating cavity to cause structural damage, thereby protecting the parts.

[0023] Figure 2 What is shown is a schematic diagram of the structure of the shell 100, which shows two perspectives, including the perspective of the connection end of the dielectric body 110 (a) and the perspective of the connection end of the multi-core cable fixing assembly 140 (b). The shell 100 is a hollow shaft-like component, and an opening 101 and an opening 102 are provided at both ends. The opening 101 is provided with a step surface, and the opening 101 is provided with a flat mouth 103. The inner wall of the opening 102 has a groove 104. The shell 100 is also provided with a radially extending through hole 105, and the through hole 105 is provided on the side close to the opening 102.

[0024] Figure 3 The figure shows a schematic diagram of the structure of the dielectric body 110. The dielectric body 110 is also a hollow shaft-like component that passes through both ends along the axial direction. The dielectric body 110 includes a segment 1 111, a segment 2 112, a segment 3 113, a segment 4 114, a segment 5 115 and a segment 6 116 in the axial direction, with radial dimensions gradually decreasing. The radial dimensions of the segment 1 111, the segment 2 112, the segment 3 113, the segment 4 114 and the segment 5 115 are all smaller than the opening 101, and the radial dimension of the segment 6 116 is larger than the opening 101 but smaller than the opening 2 102, so that after the dielectric body 110 is installed into the shell 100 through the opening 2 102, it contacts the step surface of the opening 101 through the segment 6 116, thereby completing the installation of the dielectric body 110.

[0025] A groove 2 116a is provided on the outer wall of the segment 6 116, and a sealing ring 116b is embedded in the groove 2 116a, so that a radial sliding sealing protection is formed after the medium body 110 is installed in the housing 100.

[0026] The outer wall of segment five 115 is provided with a flat opening 115a which cooperates with the flat opening 103, so that after the dielectric body 110 is installed into the shell 100, the flat opening 115a fits against the flat opening 103 to limit the relative rotation of the dielectric body 110 and the shell 100, thereby maintaining a stable connection between the dielectric body 110 and the shell 100.

[0027] The outer wall of the segment three 113 is provided with a flat opening three 113a, and the flat opening three 113a is used for mating and plugging.

[0028] A plurality of through holes 112a are provided on the transition surface between the segment 112 and the segment 1 111. The through holes 112a are connected to the hollow cavity of the dielectric body 110, so that the multi-core cable fixing assembly 140 can extend out of the through hole 112a after passing through the hollow cavity of the dielectric body 110 and complete electrical connection with other components. The number of the through holes 112a is determined according to the number of cores of the cable in the connector. Generally speaking, the number of the through holes 112a should be at least greater than or equal to the number of cores of the cable.

[0029] On the other hand, in order to facilitate the assembly of other components and maintain a stable assembly state, the transition surface between the second segment 112 and the first segment 111 is set to be a plane.

[0030] Since the dielectric body 110 is a hollow shaft-like component that penetrates through both ends along the axial direction, the segment 111 is a tubular structure as a whole. A convex key 111a extending along the axial direction is provided on the outer wall of the segment 111 for assembling other components.

[0031] Figure 4 The schematic diagram of the state of installing other components on the segment 111 is shown. Figure 1, the dielectric body 110 is also equipped with an isolation ring 121, a conductive ring 122, a conductive screw 123, a round nut 124 and a spring washer 125, the isolation ring 121 and the conductive ring 122 are alternately sleeved on the outside of the segment 111, the conductive screw 123 is inserted into the dielectric body 110 from the end of the segment 111, and cooperates with the round nut 124 and the spring washer 125 to lock and compress the isolation ring 121 and the conductive ring 122, an isolation ring 121 should be set between adjacent conductive rings 122, and an isolation ring 121 should also be set between the conductive ring 122 and the conductive screw 123 to ensure electrical isolation between each other; since the dielectric body 110 itself is made of insulating material, the contact part of the conductive ring 122 and the segment 2 112 can be provided with an isolation ring 121 according to needs, and the sum of the number of conductive rings 122 and conductive screws 123 is the same as the number of cores of the cable in the connector.

[0032] The structures of the isolation ring 121 and the conductive ring 122 are the same or similar, but their materials are different. The isolation ring 121 is made of insulating material, and the conductive ring 122 is made of conductive material. Figure 5 What is shown is a schematic diagram of the structure of an isolation ring 121, wherein the isolation ring 121 has a through hole 3 121a at its center, and a through hole 4 121b is arranged on the outer side of the through hole 3 121a. The through hole 4 121b has the same function as the aforementioned through hole 2 112a, and is used for threading cables. The through hole 3 121a also has a keyway 121c at its edge. The isolation ring 121 is assembled to the segment 111 through the through hole 3 121a, so that the convex key 111a is correspondingly stuck in the keyway 121c to prevent the isolation ring 121 from rotating, and at the same time, the through hole 4 121b is kept in corresponding position with the through hole 2 112a.

[0033] Figure 6 What is shown is a schematic diagram of the structure of the conductive ring 122, the conductive ring 122 has a through hole five 122a at the center, and a through hole six 122b is arranged on the outer side of the through hole five 122a. The through hole six 122b has the same function as the through hole two 112a and the through hole four 121b, and is used for passing cables. The through hole five 122a also has a key groove two 122c at the edge. The conductive ring 122 is assembled to the segment one 111 through the through hole five 122a, so that the convex key one 111a is correspondingly stuck in the key groove two 122c to prevent the conductive ring 122 from rotating, and at the same time, the through hole six 122b is kept in corresponding position with the through hole two 112a.

[0034] When the above-mentioned six through holes 122b are actually used, one of them is used for welding cables to achieve welding fixation and electrical conduction between the conductive ring 122 and the cable, and the others are used for passing cables to fix other conductive rings 122 and the cables and achieve electrical conduction.

[0035] Figure 7What is shown is a schematic diagram of the structure of a conductive screw 123. The nail rod of the conductive screw 123 has an external thread 123a that cooperates with the round nut 124. At the same time, the end of the nail rod of the conductive screw 123 also has a blind hole 123b. The blind hole 123b is used to achieve welding fixation and electrical conduction between the conductive screw 123 and the cable.

[0036] Figure 8 What is shown is a schematic diagram of the structure of a round nut 124 that cooperates with a conductive screw 123. The center of the round nut 124 has an internal thread 124a that cooperates with an external thread 123a. At the same time, a key groove 124b is provided on the end face of the round nut 124. When installed, the key groove 124b is in the cavity of the dielectric body 110 toward the opening 2 102, so that the round nut 124 can be tightened on the conductive screw 123 using a probe tool.

[0037] Fig. 9 What is shown is an installation diagram of a multi-core cable fixing component 140 at an opening 102. The multi-core cable fixing component 140 is arranged in the cavity of the shell 100 and abuts against a spring 130. A dielectric body 141 and a C-shaped retaining ring 142 are arranged on the side of the multi-core cable fixing component 140 away from the dielectric body 110 to limit and fix the multi-core cable fixing component 140 to prevent the multi-core cable fixing component 140 from being pressed out of the shell 100 by the spring 130.

[0038] Fig.10 What is shown is a schematic diagram of the structure of a multi-core cable fixing component 140, in which a plurality of jack fittings 143 are fixed inside the multi-core cable fixing component 140, and the multi-core cable fixing component 140 and the jack fitting 143 can generally be assembled by injection molding or press-fitting; the multi-core cable fixing component 140 includes a base 140a and a tail 140b arranged along the axial direction, wherein the cross-section of the base 140a is the same as the cross-section of the cavity of the shell 100 and the cross-section of the opening 102, so that the multi-core cable fixing component 140 always keeps in contact with the inner wall of the shell 100 after being installed into the shell 100 through the base 140a, thereby maintaining the stability of the multi-core cable fixing component 140.

[0039] In addition, a sealing ring 140c is also provided on the outer wall of the base 140a, so that radial sealing protection is formed after the multi-core cable fixing assembly 140 is installed into the housing 100.

[0040] The radial dimension of the tail portion 140b is smaller than that of the base portion 140a to facilitate the installation of the dielectric body 141 and the C-shaped retaining ring 142, and a convex key 140d extending along the axial direction is provided on the outer side wall of the tail portion 140b to cooperate with the positioning of the dielectric body 141 to prevent rotation.

[0041] A thin-walled flange 140e is also provided on the end surface of the base 140a. The flange 140e is arranged at the other end of the base 140a relative to the tail 140b, and after the multi-core cable fixing assembly 140 is assembled, there is a gap between the flange 140e and the inner wall of the shell 100, so as to facilitate the spring 130 to be clamped between the flange 140e and the inner wall of the shell 100, thereby improving the stability of the spring 130.

[0042] Fig.11 The structure diagram of the dielectric body 141 is shown. A through hole 141a 141a cooperating with the tail 140b is provided at the center of the dielectric body 141. A key groove 141b 141b cooperating with the convex key 140d is provided at the edge of the through hole 141a. A threaded blind hole 141c is provided on the outer wall of the dielectric body 141. The key groove 141b is aligned with the convex key 140d, and the dielectric body 141 is sleeved on the tail 140b and pressed into the shell 100. At this time, the dielectric body 141 and the multi-core cable fixing component 140 cannot rotate relative to each other. After the multi-core cable fixing component 140 is rotated to align the threaded blind hole 141c with the through hole 105, the top screw 144 is installed in the threaded blind hole 141c and the through hole 105, so as to achieve the purpose of axial limit fixation of the multi-core cable fixing component 140 and limit the axial rotation of the multi-core cable fixing component 140. Finally, the C-shaped retaining ring 142 is installed in the groove 104. The C-shaped retaining ring 142 contacts the dielectric body 141 to provide axial load-bearing and limiting support, thereby preventing the multi-core cable fixing assembly 140 from sliding outward due to radial bending and deformation of the top screw 144, and further maintaining the pre-tightening state of the spring 130 in the shell 100 and providing the pre-tightening force to the dielectric body 110. Example 2

[0043] This embodiment provides a connector for plug-in connection, which includes the floating multi-core coaxial connector (referred to as a plug) described in the above embodiment 1, and a corresponding socket is provided accordingly.

[0044] Fig.12 What is shown is a schematic diagram of the structure of the socket recorded in this embodiment, which socket includes a shell 200 and a contact component 210 and a multi-core cable fixing component 220 installed at both ends of the shell 200, wherein the contact component 210 is used to be plugged with the dielectric body 110 to achieve an electrically conductive connection, and the multi-core cable fixing component 220 is used to fix multiple coaxial cables electrically connected to the contact component 210.

[0045] Fig.13What is shown is a schematic diagram of the structure of the shell 200, which shows two perspectives, including the perspective of the connection end of the multi-core cable fixing component 220 (a) and the perspective of the connection end of the contact component 210 (b). The shell 200 is a hollow shaft-like component, and openings 3 201a and 4 201b are provided at both ends. The inner cavity of the shell 200 is hollow section 1 202a, hollow section 202b and hollow section 3 202c from opening 3 201a to opening 4 201b. The radial dimension of hollow section 202b is smaller than that of hollow section 1 202a, so as to form a step surface between hollow section 1 202a and hollow section 2 202b.

[0046] The inner wall of the hollow section 1 202a is provided with a groove 3 203a, and the groove 3 203a is arranged close to the opening 3 201a; the hollow section 1 202a is also provided with a radial through hole 8 203b.

[0047] The radial dimension of the hollow section three 202 is also set to be larger than that of the hollow section two 202b, so as to form a step surface between the hollow section three 202 and the hollow section two 202b, thereby facilitating limiting the position of the contact assembly 210 when the contact assembly 210 is pressed and fixed.

[0048] In addition, the inner wall of the hollow section three 202 has an internal thread two 204a for cooperating with the fixed contact assembly 210, and the internal thread two 204 is formed from the opening four 201b; the inner wall of the hollow section three 202 also has a convex key three 204b, and the convex key three 204b is used to cooperate with and limit the rotation of the contact assembly 210 in the shell two 200.

[0049] On the other hand, a groove 204c is provided on the end face of the opening 201b, and the groove 204c is used to achieve end face sealing.

[0050] Fig.14 The figure shows the assembly schematic diagram of the contact assembly 210 in the hollow section 3 202c. The contact assembly 210 includes a dielectric body 3 211, a contact ring 212, an isolation ring 213 and a dielectric body 4 214. The dielectric body 3 211 is arranged at the end of the hollow section 3 202c and abuts against the step surface. A spring washer 216 is arranged between the dielectric body 3 211 and the step surface. The dielectric body 4 214 is fixedly installed at the opening of the hollow section 3 202c (that is, the opening 4 201b). The groove 4 A sealing ring 215 is embedded in 204c, and is pressed by the dielectric body 214 to achieve the purpose of end face sealing. The contact ring 212 and the isolation ring 213 are alternately arranged between the dielectric body 211 and the dielectric body 214, and the dielectric body 211 and the dielectric body 214 are both adjacent to the contact ring 212. The isolation ring 213 is used for insulating electrical isolation. The contact ring 212 realizes electrical conduction after contacting the conductive ring 122. The dielectric body 211 and the dielectric body 214 are both insulating structural parts.

[0051] Fig.15 The structure diagram of the dielectric body 3 211 is shown. The outer wall of the dielectric body 3 211 has a key groove 5 211a and a through hole 9 211b, wherein the key groove 5 211a is formed by the end surface of the dielectric body 3 211 in contact with the step surface extending along the axial direction. When assembling, the key groove 5 211a is aligned with the convex key 3 204b, and the dielectric body 3 211 is prevented from rotating by the engagement of the two. In addition, the dielectric body 3 211 is provided with a key groove 5 211a. Fig.14 One end of the dielectric body three 211 close to the step surface is set as a cavity, and the through hole nine 211b is connected to the cavity so that the cable can pass through the cavity and the through hole nine 211b. In order to facilitate the arrangement of the cables, a wiring groove 211c extending axially from the through hole nine 211b to the opening four 201b is also provided on the outer wall of the dielectric body three 211, and the cable is embedded in the wiring groove to avoid damage caused by squeezing the cable during assembly.

[0052] In addition, a groove 211d is provided on the end surface of the dielectric body 3 211 away from the step surface, and the groove 211d is used for embedded installation of the contact ring 212. Using the height of the dielectric body 3 211 itself to assemble the contact ring 212 is conducive to compressing the overall size and achieving the purpose of miniaturization; a key groove 211e is provided at the bottom of the groove 211d for matching the assembly of the contact ring 212.

[0053] Fig.16 What is shown is a schematic diagram of the structure of the contact ring 212 installed in the groove one 211d, the outer wall of the contact ring 212 has a groove two 212a arranged along the axial direction, the function of the groove two 212a is the same as the wiring groove 211c, one of which is used for welding cables, and the other is used for threading cables; a convex key four 212b is also provided on the end face of the contact ring 212, and the convex key four 212b is aligned and embedded in the key groove six 211e, so that the contact ring 212 is installed in the groove one 211d of the dielectric body three 211 and remains relatively fixed to achieve mutual anti-rotation.

[0054] The contact ring 212 also has a plurality of spring sheets 212c distributed in a ring array. The spring sheets 212c are folded inward. The spring sheets 212c on the contact ring 212 are an integrated contact structure that is stamped, rolled, and then heat-treated. Compared with conventional split-type inclined spring structures, the contact is stable and reliable without the risk of falling off. The large positive contact pressure can transmit a larger current.

[0055] Fig.17What is shown is a schematic diagram of the structure of the contact ring 212 installed on the outside of the dielectric body three 211, and the outer side wall of the contact ring 212 is provided with a groove two 212a arranged along the axial direction, and the function of the groove two 212a is the same as that of the wiring groove 211c, one of which is used for welding cables, and the other is used for threading cables; a convex key four 212b is also provided on the end face of the contact ring 212, and the convex key four 212b is aligned and embedded in the key groove six 211e, so that the contact ring 212 is installed in the groove one 211d of the dielectric body three 211 and remains relatively fixed to achieve mutual anti-rotation; in addition, a key groove seven 212d with the same end face as the convex key four 212b is also provided on the contact ring 212, and the key groove seven 212d is used to cooperate with the installation of the isolation ring two 213.

[0056] The contact ring 212 also has a plurality of spring sheets 212c distributed in a ring array. The spring sheets 212c are folded inward. The spring sheets 212c on the contact ring 212 are an integrated contact structure that is stamped, rolled, and then heat-treated. Compared with conventional split-type inclined spring structures, the contact is stable and reliable without the risk of falling off. The large positive contact pressure can transmit a larger current.

[0057] Fig.18 What is shown is a schematic diagram of the structure of the isolation ring 213, on the outer side wall of the isolation ring 213 there is a groove 3 213a arranged along the axial direction, and the function of the groove 3 213a is also to pass the cable; in addition, the isolation ring 213 is also provided with a convex key 5 213b protruding from the end face. During assembly, the isolation ring 213 and the contact ring 212 are alternately stacked, and the convex key 5 213b is embedded in the key groove 7 212d, and at the same time, the positions of the wiring groove 211c, the groove 212a and the groove 3 213a correspond one to one.

[0058] Fig.19 The structure diagram of the dielectric body 214 is shown. The dielectric body 214 has a through hole 214d at its center to facilitate the insertion of a plug. The dielectric body 214 includes a base 214a and a connecting portion 214b, wherein the outer wall of the connecting portion 214b is an outer thread 214c that matches the inner thread 204a. When the connecting portion 214b is screwed into the hollow section 3 202, the base 214a is abutted against the end face of the opening 201b and presses the sealing ring 3 215.

[0059] A second blind hole 214e is provided on the outer end surface of the second base 214a. The number of the second blind holes 214e is determined according to specific requirements. The second blind hole 214e is used to assist in rotating the fourth medium body 214 until the second spring washer 216 and the third sealing ring 215 are compressed to provide pre-tightening force to prevent loosening.

[0060] A groove five 214f ​​is also provided on the inner wall of the through hole ten 214d, and a sealing ring four 217 is embedded in the groove five 214f ​​to achieve sealing during the plug-in connection process between the plug and the socket.

[0061] A flat mouth four 214g is also provided on the inner wall of the through hole ten 214d, and the flat mouth four 214g cooperates with the flat mouth three 113a. When the plug and the socket are fully plugged in, the flat mouth four 214g fits with the flat mouth three 113a to prevent rotation.

[0062] See also Fig.12 and Fig. 9 The structure of the second multi-core cable fixing assembly 220 is the same as that of the first multi-core cable fixing assembly 140, and will not be described in detail in this embodiment.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A floating multi-core coaxial plug, characterized in that: The plug comprises a shell 1, and a dielectric body 1 and a multi-core cable fixing assembly arranged at both ends of the shell 1, wherein the dielectric body 1 extends out of the shell 1 for socket connection; A spring 1 in a pre-tightened state is disposed in the shell 1, one end of the spring 1 is pressed against the dielectric body 1, and the external force required to compress the spring 1 to the pre-tightened state is not less than the external force required for the plug to complete the insertion. When the plug is normally inserted, the spring 1 maintains the pre-tightened state. When the plug is over-inserted, the dielectric body 1 retreats into the shell 1 to compress the spring 1.

2. A floating multi-core coaxial plug according to claim 1, characterized in that: The two ends of the shell 1 are provided with opening 1 and opening 2, a hollow cavity is formed between the opening 1 and opening 2, and a step surface is arranged at one of the openings; the dielectric body 1 is pressed into the hollow cavity from the opening 2 and then extends out from the opening 1, and has a segment 6 that contacts the step surface.

3. A floating multi-core coaxial plug according to claim 2, characterized in that: The opening 1 is provided with a flat opening 1, and the side wall of the dielectric body 1 is provided with a flat opening 2. When the dielectric body 1 is pressed into the step surface of the segment 6, the flat opening 2 is fitted to the flat opening 1 to restrict the rotation of the dielectric body 1, and when the plug is over-inserted to make the dielectric body 1 retreat into the housing 1, the flat opening 2 is kept fitted to the flat opening 1; And / or, a groove 2 is arranged on the outer wall of the segment 6, a sealing ring 1 is arranged in the groove 2, and the sealing ring 1 forms a radial sliding seal between the medium body 1 and the shell 1.

4. A floating multi-core coaxial plug according to claim 2, characterized in that: A segment 1 is arranged on the end surface of the dielectric body 1 extending out of the shell 1, and a hollow cavity penetrating segments 1 to 6 is arranged inside the dielectric body 1. An isolation ring 1, a conductive ring and a conductive screw are installed on the segment 1. The isolation ring 1 and the conductive ring are alternately sleeved on the outside of the segment 1. The conductive screw cooperates with a round nut to fix and compress the isolation ring 1 and the conductive ring at the end of the segment 1.

5. A floating multi-core coaxial plug according to claim 4, characterized in that: The segment 1 limits the rotation of the isolation ring 1 and the conductive ring through the cooperation of the convex key and the keyway; And / or, the isolation ring 1 and the conductive ring are provided with through holes for passing cables, the dielectric body 1 is also provided with through holes for passing cables, and the through holes on the dielectric body 1 are connected to the hollow cavity inside the dielectric body 1, and the through holes on the isolation ring 1 and the conductive ring correspond to the through holes on the dielectric body 1; And / or, the end of the nail rod of the conductive screw extending into the interior of the dielectric body has a blind hole for fixing the cable.

6. A floating multi-core coaxial plug according to claim 2, characterized in that: The multi-core cable fixing component is embedded with a jack fitting, and the multi-core cable fixing component is pressed into the hollow cavity through the opening 2. The multi-core cable fixing component includes a base 1 and a tail away from the opening 1, and a dielectric body 2 is sleeved on the tail. The outer side wall of the dielectric body 2 is provided with a threaded blind hole, and the shell 1 is provided with a radially extending through hole 1, and the threaded blind hole and the through hole 1 are provided with a top screw to fix the dielectric body 2.

7. A floating multi-core coaxial plug according to claim 6, characterized in that: The dielectric body 2 limits the rotation of the multi-core cable fixing assembly by cooperating with the convex key and the key slot; And / or, the inner wall of the second opening is provided with a groove 1, and a C-shaped retaining ring is embedded in the groove 1 to abut against the dielectric body 2; And / or, a sealing ring 2 is provided on the outer wall of the base 1 to form a radial seal; And / or, a thin-walled flange is provided on the end surface of the base 1, a gap is provided between the flange and the inner wall of the shell 1, and the other end of the spring 1 is embedded in the gap.

8. A floating multi-core coaxial connector, characterized in that: It comprises a plug and a socket, the plug and the socket are pluggable and connected, and the plug is a floating multi-core coaxial plug as claimed in any one of claims 1 to 7; The socket comprises a second housing and a contact assembly mounted on two ends of the housing; One end of the shell body 2 is provided with an opening 4, the opening 4 is extended along the axial direction to form a hollow section 3, and the end of the hollow section 3 is a step surface; The contact assembly includes a dielectric body three pressed at the end of the hollow section three, a dielectric body four fixed at the four openings, and a contact ring and an isolation ring two alternately overlapped between the dielectric body three and the dielectric body four; the dielectric body three, the contact ring and the isolation ring two are all provided with through holes for passing cables and corresponding in position.

9. A floating multi-core coaxial connector according to claim 8, characterized in that: A flat opening 4 is arranged on the inner wall of the through hole in the center of the dielectric body 4, and a flat opening 3 is arranged on the side wall of the dielectric body 1. When the plug and the socket are fully plugged in, the flat opening 3 fits against the flat opening 4 to limit the rotation of the plug and the socket.

10. The floating multi-core coaxial connector according to claim 8, characterized in that: The second shell body limits the rotation of the third medium body by means of a convex key and a keyway, and the third medium body, the contact ring and the second isolating ring limit the rotation of each other by means of a convex key and a keyway; The dielectric body 4 includes a base 2 and a connecting part, the connecting part is screwed and fixed to the opening 4, and the center of the dielectric body 4 has a through hole that penetrates the base 2 and the connecting part.

11. A floating multi-core coaxial connector according to claim 10, characterized in that: A sealing ring 4 is embedded on the inner wall of the through hole of the dielectric body 4; And / or, a blind hole is provided on the outer end surface of the second base; And / or, a sealing ring three is provided between the base two and the end surface of the opening four.

12. The floating multi-core coaxial connector according to claim 9, characterized in that: The contact ring is provided with a plurality of spring sheets distributed in a ring-shaped array, the spring sheets are folded inwards, and the spring sheets are an integrated contact structure that is formed by die stamping and rolling and then heat-treated.

Images