High-voltage and high-current coaxial cable connecting assembly, assembling method thereof and connector

Abstract

The invention provides a high-voltage and high-current coaxial cable connecting assembly, an assembling method thereof and a connector. The coaxial cable connecting assembly comprises a matching part matched with the second connecting unit and a cable, and the matching part comprises a first metal shell, a first medium body A, a first loop conductor, a first medium body B and a first inner conductor; the cable comprises a cable sheath, a grounding braid layer, an outer insulating layer, a loop braid layer, an inner insulating layer and a cable conductor. The first inner conductor is electrically connected with the cable conductor to form a current positive circuit, the first loop conductor is electrically connected with the loop braid layer to form a current loop, the first metal shell is electrically connected with the grounding braid layer to form a grounding circuit, and a complete circuit system can be realized by using one cable; and by means of the wire clamp, not only can a grounding circuit be formed, but also rapid clamping of the cable and the matching part can be realized, and the installation complexity is reduced.

Description

Technical Field

[0001] The present invention relates to the field of connector manufacturing, and in particular to a high-voltage and high-current coaxial cable connection component and an assembly method thereof, and a connector. Background Art

[0002] With the rapid development of the semiconductor industry, the requirements for equipment in chip manufacturing, testing and packaging are getting higher and higher. These devices not only need to handle high-power power transmission, but also need to ensure accurate signal transmission. However, in traditional circuit design, in order to meet the needs of high current and high voltage, it is usually necessary to use a current positive circuit, a current return circuit and a ground circuit to form a complete circuit system. In addition, if signal transmission is involved, additional signal transmission lines are required. As a result, the number of cable assemblies in the entire system is large, which not only increases the complexity of installation, but also affects the reliability and maintenance efficiency of the equipment.

[0003] Especially in high current and high voltage application environments, in order to ensure the safety and stability of the connection, the traditional solution often uses a screw thread fastening method. Although this method can ensure the firmness of the connection to a certain extent, it also brings the problem of inconvenience in installation. Each installation or removal requires professional tools and techniques, which is time-consuming and prone to poor contact or damage to the cable interface due to improper operation. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a high-voltage and high-current coaxial cable connection component and an assembly method and a connector thereof.

[0005] The main contents of the present invention include:

[0006] A high-voltage and high-current coaxial cable connection assembly, comprising a mating part and a cable connected to the mating part; the mating part comprises a first metal shell, a first dielectric body A disposed in the first metal shell, a first loop conductor disposed in the first dielectric body A, a first dielectric body B disposed in the first loop conductor, and a first inner conductor disposed in the first dielectric body B; the cable comprises, from outside to inside, a cable sheath, a grounding braided layer, an outer insulating layer, a loop braided layer, an inner insulating layer, and a cable conductor;

[0007] Wherein, the first inner conductor is electrically connected to the cable conductor; the first loop conductor is electrically connected to the loop braided layer; the first metal shell is electrically connected to the ground braided layer through a connecting unit;

[0008] The connecting unit includes a wire clamp sleeved on the outside of the cable sheath, the grounding braided layer is folded back and electrically connected to one end of the wire clamp and the first metal shell, an external thread is provided on the outside of the wire clamp, and an internal thread is correspondingly provided on the inner wall of the first metal shell, and the first metal shell is threadedly connected to the wire clamp.

[0009] Preferably, the mating part also includes a shell docking piece; a first assembly step is provided on the inner wall of the first metal shell, and a first mating step is convexly provided on the outer peripheral wall of the first dielectric body A; the shell docking piece is arranged between the first metal shell and the first dielectric body A; the shell docking body is interference fit with the inner wall of the first metal shell and is close to the radial outer side of the first end of the first dielectric body A.

[0010] Preferably, it also includes an intermediate installation unit, which includes a first fixing member arranged at one end radially outside the outer insulation layer; the end of the loop braided layer after being folded back extends radially outside the first fixing member; the inner wall of the first fixing member is provided with a first installation step, and the first installation step abuts against the end face of the outer insulation layer.

[0011] Preferably, the intermediate installation unit further comprises an intermediate insulator and a grounding block sequentially arranged along the axial direction, wherein the intermediate insulator and the grounding block are sleeved outside the outer insulating layer and arranged between the loop braided layer and the grounding braided layer;

[0012] An insulating limiting step is formed on the outer peripheral wall of the middle insulator, and an installation limiting step is formed on the inner wall of the second end of the first dielectric body A correspondingly.

[0013] Preferably, the intermediate installation unit also includes a second fixing member; a second installation step is provided on the inner wall of the wire clamp, and the second installation step abuts against the end face of the cable sheath; one end of the grounding braided layer after being folded back extends radially outward from the wire clamp; the second fixing member is sleeved on the radial outward side of one end of the grounding braided layer after being folded back, and is electrically connected to the first metal shell.

[0014] Preferably, it also includes a tail screw sleeve, which is sleeved outside the cable sheath and is threadedly connected to the wire clamp.

[0015] The present invention also proposes a method for assembling a high-voltage and high-current coaxial cable connection assembly, comprising the following steps:

[0016] According to a set length, peeling off the layers of the cable to expose a set length of the first inner conductor, an inner insulation layer, a loop braided layer, and a ground braided layer;

[0017] The wire clamp sleeve is arranged outside the cable sheath, the grounding braided layer is folded back to expose a part of the outer insulating layer, the grounding braided layer after the folding back is attached to the end surface and the outer peripheral wall of the wire clamp, and the grounding braided layer is fixed by the second fixing member;

[0018] The grounding block, the intermediate insulator and the first fixing member are sequentially sleeved on the exposed outer insulating layer, the grounding block abuts against the grounding braided layer, and the first installation step of the first fixing member abuts against the end surface of the outer insulating layer;

[0019] Folding the loop braided layer in reverse order to make it adhere to the end surface and the outer peripheral wall of the first fixing member;

[0020] The cable conductor is electrically connected to the first inner conductor; the wire clamp is assembled in place, and the grounding braided layer is folded back and fixed to obtain a wiring module;

[0021] Assemble the first dielectric body A from the first end of the first metal shell into the first metal shell; then assemble the first loop conductor from the second end of the first dielectric body A into the first dielectric body A; then assemble the first dielectric body B from the second end of the first loop conductor into the first loop conductor to obtain a main body module;

[0022] The wiring module is inserted into the first dielectric body B, and the first metal shell and the wire clamp are tightened, so that the first metal shell is electrically connected to the grounding braided layer, and the first loop conductor is electrically connected to the loop braided layer.

[0023] The present invention also provides a high-voltage and high-current coaxial cable connector, comprising a first connecting unit and a second connecting unit, wherein the first connecting unit is the above-mentioned high-voltage and high-current coaxial cable connecting assembly; the second connecting unit comprises a second metal shell, wherein a second dielectric body A is disposed in the second metal shell, wherein a second loop conductor is disposed in the second dielectric body A, wherein a second dielectric body B is disposed in the second loop conductor, and wherein a second inner conductor is disposed in the second dielectric body B;

[0024] When the first connection unit is matched with the second connection unit, the second inner conductor is electrically connected to the first inner conductor, the second loop conductor is electrically connected to the first loop conductor, and the second metal shell is electrically connected to the first metal shell.

[0025] Preferably, the first end of the first dielectric body A extends axially outside the first end of the first loop conductor; the first end of the first metal shell extends axially outside the first end of the first dielectric body A; the first end of the first dielectric body B extends to the axial outside of the first end of the first metal shell;

[0026] The first end of the second metal shell extends to the axial outside of the first end of the second dielectric body A and the second loop conductor; the first end of the second dielectric body B extends to the axial outside of the first end of the second metal shell;

[0027] When the first connecting unit is matched with the second connecting unit, the first dielectric body B is arranged in the second dielectric body B; the first dielectric body A is arranged in the second metal shell; and the second metal shell is arranged in the first metal shell.

[0028] Preferably, the shell docking piece includes a docking body and a docking elastic arm, the docking body is interference connected with the first metal shell, and when the first connecting unit is matched with the second connecting unit, the docking elastic arm is electrically connected to the inner wall of the second metal shell, and the docking elastic arm rests on the second limiting step of the second metal shell.

[0029] Preferably, it further comprises a quick lock unit, wherein the quick lock unit comprises a quick lock screw sleeve, a quick lock ball and a quick lock spring; the first connecting unit and the second connecting unit realize a locked state and a separated state by means of the quick lock unit;

[0030] The quick-lock screw sleeve is slidably sleeved outside the first metal shell, the quick-lock spring is sleeved outside the first metal shell and abuts against the first metal shell and the quick-lock screw sleeve respectively; a plurality of quick-lock through holes are opened along the circumferential direction on the outer peripheral wall of the first metal shell; a plurality of quick-lock grooves are correspondingly opened on the outer peripheral wall of the second metal shell;

[0031] In the locked state, the quick-lock ball abuts against the quick-lock screw sleeve and the quick-lock groove respectively through the quick-lock through hole;

[0032] In the separated state, the quick-lock screw sleeve compresses the quick-lock spring, and the quick-lock ball portion protrudes out of the quick-lock through hole and abuts against the quick-lock screw sleeve.

[0033] Preferably, the outer peripheral wall of the first metal shell is provided with a shell limiting step; the inner wall of the quick-lock screw sleeve is convexly provided with a quick-lock protrusion, and the quick-lock protrusion has a quick-lock limiting surface and an unlocking guide surface; the two ends of the quick-lock spring are respectively abutted against the shell limiting step and the quick-lock limiting surface; when the locked state is changed to the separated state, the quick-lock ball slides along the unlocking guide surface.

[0034] Preferably, a reset indicator strip is disposed on the outer peripheral wall of the first metal shell near the first end thereof.

[0035] Compared with the prior art, the high voltage and high current coaxial cable connection assembly and its assembly method and connector have the following beneficial effects:

[0036] (1) A positive current circuit is formed by electrically connecting the first inner conductor to the cable conductor, a current loop is formed by electrically connecting the first loop conductor to the loop braided layer, and a grounding circuit is formed by electrically connecting the first metal shell to the grounding braided layer. A complete circuit system can be realized by using one cable;

[0037] (2) With the help of the wire clamp, not only can the grounding circuit be formed, but also the cable and the matching part can be quickly clamped, reducing the complexity of installation;

[0038] (3) The connection between the circuits is effectively isolated through the intermediate installation unit, which can meet the creepage distance required for high voltage;

[0039] (4) By designing the positions and sizes of the first dielectric body A, the first dielectric body B, the second dielectric body A, and the second dielectric body B, while meeting the impedance and high voltage creepage distance requirements, staggered matching can be achieved when the first connection unit and the second connection assembly are matched, thereby ensuring the accuracy of the matching;

[0040] (5) The first connection unit and the second connection unit are quickly and reliably locked by the quick locking unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the overall structure of the first connecting unit;

[0042] Figure 2 It is a structural diagram of the main module;

[0043] Figure 3 It is a structural diagram of the wiring module;

[0044] Figure 4 (a)-(e) are diagrams showing the assembly process of the first connection unit;

[0045] Figure 5 is a schematic diagram of the overall structure of the second connecting unit;

[0046] Figure 6 A schematic diagram of the structure of the first connecting unit and the second connecting unit matching;

[0047] Reference numerals:

[0048] 1-first connecting unit; 10-first metal shell; 100-first assembly step; 101-quick lock through hole; 102-shell limiting step; 11-first dielectric body A; 110-first matching step; 111-installation limiting step; 12-first loop conductor;

[0049] 13-first dielectric body B; 14-first inner conductor; 15-housing docking piece; 150-docking body; 151-docking elastic arm; 16-crown spring;

[0050] 2-second connecting unit; 20-second metal shell; 200-second limiting step; 201-quick lock groove; 21-second medium

[0051] Body A; 22-second loop conductor; 23-second dielectric body B; 24-second inner conductor;

[0052] 30-cable sheath; 31-ground braided layer; 32-outer insulation layer; 33-loop braided layer; 34-inner insulation layer; 35-cable conductor;

[0053] 4-connection unit; 40-clip; 400-clip body; 4000-second installation step; 401-clip fixing part; 4010-clamp groove; 402-clip clamping part; 41-second fixing member; 42-tail screw sleeve;

[0054] 50-first fixing member; 500-first mounting step; 51-middle insulator; 510-insulation limiting step; 52-grounding block;

[0056] 60-quick lock screw sleeve; 600-quick lock protrusion; 6000-quick lock limit surface; 6001-unlocking guide surface; 61-quick lock ball; 62-quick lock spring; 63-reset indicator bar. DETAILED DESCRIPTION

[0057] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0058] In order to meet the needs of large current and high voltage, it is usually necessary to use a current positive circuit, a current return circuit and a grounding circuit to form a complete circuit system. The coaxial cable connector proposed in the present invention can realize a complete circuit system using only one coaxial cable, which not only reduces the number of cables used and realizes fast and convenient assembly of cables and connectors, but also can meet the creepage distance and impedance required for large current and high voltage transmission, thereby ensuring the reliability of current and signal transmission.

[0059] Specifically, see Figure 1 , Figure 5 and Figure 6The present invention provides a high voltage and high current coaxial cable connector comprising a first connecting component 1 and a second connecting component 2. For better description, one end of the first connecting component 1 and the second connecting component 2 connected to each other is referred to as their respective first end, and the other end is referred to as the second end. Figure 1 The left side is the first end of the first connecting component 1, Figure 5 The right side of the figure is the first end of the second connecting component.

[0060] Specifically, the first connection component 1 includes a mating part and a cable electrically connected to the mating part, the mating part is used to be electrically connected to the second connection unit 2, the mating part includes a first metal shell 10 for forming a grounding loop, a first loop conductor 12 for forming a current loop, a first inner conductor 14 for forming a high current circuit, a first dielectric body A11 for insulating the first metal shell 10 and the first loop conductor 12, and a first dielectric body B13 for insulating the first loop conductor 12 and the first inner conductor 14; and the second connection component 2 includes a second metal shell 20, a second loop conductor 22, a second inner conductor 24, and a second dielectric body A21 configured between the second metal shell 20 and the second loop conductor 22 for insulating the two, and a second dielectric body B23 configured between the second loop conductor 22 and the second inner conductor 24 for insulating the two.

[0061] When the first connecting component 1 and the second connecting component 2 are matched, Figure 6 As shown, the needle-shaped second inner conductor 24 is inserted into the closing end of the first end of the first inner conductor 14; the second metal shell 20 is inserted into the space between the first metal shell 10 and the first dielectric body A11; the second dielectric body A21 and the second loop conductor 22 are inserted into the space between the first dielectric body A11 and the first loop conductor 12, so that the inner wall of the first end of the second loop conductor 22 is electrically connected to the outer peripheral wall of the first end of the first loop conductor 12, and the first dielectric body A11 and the second dielectric body A21 are isolated between the second loop conductor 22 and the second metal shell 20, that is, the first dielectric body A11 and the second dielectric body A21 are isolated between the current positive loop and the return circuit, so that the space between the two circuits meets the impedance and withstand voltage requirements at the same time; at the same time, the first dielectric body B13 is inserted into the space between the second dielectric body B23 and the second inner conductor 24.

[0062] Furthermore, in order to ensure the reliability of the contact between the second inner conductor 24 and the first inner conductor 14, a crown spring 16 is provided at the first end of the first inner conductor 14, and the second inner conductor 24 is inserted into the crown spring 16, and a reliable electrical connection between the two is achieved by relying on the waist of the crown spring 16; at the same time, a limiting step is provided on the inner wall of the first metal shell 10 to limit the axial insertion depth of the second metal shell 20; similarly, corresponding limiting steps are provided on the inner wall of the first dielectric body A11 and the outer peripheral wall of the first dielectric body B.

[0063] In one of the embodiments, in order to ensure the transmission of large current, the first connecting component 1 also includes a shell docking piece 15, and the shell docking piece 15 is interference-fitted in the first end of the first metal shell 10. When the first connecting component 1 and the second connecting component 2 are matched, the second metal shell 20 is arranged between the first metal shell 10 and the shell docking piece 15, so that the inner and outer walls of the second metal shell 20 are respectively electrically contacted with the first metal shell 10 and the shell docking piece 15, thereby increasing the contact area corresponding to the grounding circuit and ensuring the flow of large current.

[0064] Furthermore, the shell docking piece 15 includes a docking body 150 that is interference fit with the first metal shell 10 and a docking spring arm 151 for electrically contacting the second metal shell 20; and a second limiting step 200 is provided on the inner wall of the second metal shell 20. When the first connecting component 1 and the second connecting component 2 are matched in place, the end of the shell docking piece 15 abuts against the second limiting step 200.

[0065] Furthermore, the shell docking member 15 can not only increase the contact area between the first metal shell 10 and the second metal shell 20, but also realize the stable assembly of the first dielectric body A11 and the first metal shell 10; Figure 1 and Figure 2 As shown, a first assembly step 100 is provided on the inner wall of the first metal shell 10, and correspondingly, a first matching step 110 is convexly provided on the outer peripheral wall of the first dielectric body A11. During assembly, the first dielectric body A11 is inserted from the first end of the first metal shell 10. When the first matching step 110 and the first assembly step 100 abut against each other, the two are assembled in place. Then, the shell docking piece 15 is inserted from the first end of the first metal shell 10 to make it interference fit with the first metal shell 10, so that the first dielectric body A11 is pressed tightly into the first metal shell 10.

[0066] In one embodiment, an assembly step is also provided on the inner wall of the first dielectric body A, and the first loop conductor 12 is inserted into the first dielectric body A from the second end thereof, and assembled into place using the corresponding assembly step; similarly, the first dielectric body B13 is inserted into the first loop conductor 12 from the second end thereof, and assembled into place using the assembly step, thereby obtaining the main body module of the first connection unit 1.

[0067] See also Figure 1 The first connection unit 1 also includes a wiring module, and the wiring module includes the first inner conductor 14 of the mating part and the cable. For ease of assembly, the first connection unit is assembled separately to obtain a wiring module and a main body module, and then the two parts are quickly connected. The structure and assembly method of the wiring module will be described in detail below.

[0068] See also Figure 2 , Figure 3 As shown in Figures 4 and 5, the cable includes, from outside to inside, a cable sheath 30, a grounding braided layer 31, an outer insulating layer 32, a loop braided layer 33, an inner insulating layer 34 and a cable conductor 35; wherein, the first inner conductor 14 is electrically connected to the cable conductor 35; the first loop conductor 12 is electrically connected to the loop braided layer 33; the first metal shell 10 is electrically connected to the grounding braided layer 31 through a connecting unit; that is, the grounding circuit is completed by the first metal shell 10, the second metal shell 20 and the grounding braided layer 31; and the return circuit is completed by the first loop conductor 12, the loop braided layer 33 and the second loop conductor 22; the current positive circuit is completed by the first inner conductor 14, the cable conductor 35 and the second inner conductor 24.

[0069] In order to meet the large current return of the return circuit, an intermediate installation unit 5 is arranged outside the outer insulating layer 32, and the intermediate installation unit 5 includes a first fixing member 50, an intermediate insulator 51 and a grounding block 52 arranged in sequence along the axial direction from the first end to the second end; wherein, the inner wall of the first fixing member 50 is provided with a first installation step 500, and the first installation step 500 is pressed against the end face of the outer insulating layer 32 to position the first fixing member 50, and the end of the loop braided layer 33 after being folded back extends radially outward of the first fixing member 50; similarly, a wire clamp 40 is arranged on the outer outer surface of the cable sheath 30, and the grounding braided layer 31 is electrically connected to one end of the wire clamp 40 and the first metal shell 10 after being folded back; and the intermediate insulator 51 and the grounding block 52 are arranged between the folded loop braided layer 33 and the grounding braided layer 35. When the wiring module is assembled with the main body module, the second end of the first fixing member 50 has a limiting step and is provided with a plurality of elastic arm-shaped clamping arms 12-2, so that the end of the folded loop braided layer 33 and the surface attached to the radial outer side of the first fixing member 50 can be electrically connected to the first loop conductor 12, and the elastic arm-shaped clamping arms 12-2 provide a certain clamping force on the loop braided layer 33 to conduct the loop braided layer 33. The first end of the first loop conductor 12 is also provided with an elastic arm-shaped contact arm 12-1 to increase the contact reliability between the first loop conductor 12 and the second loop conductor 22.

[0070] On the one hand, the intermediate insulator 51 and the grounding block 52 ensure the electrical insulation and interference of the two parts. On the other hand, the limiting step at the second end of the first loop conductor 12, the intermediate insulator 51, the grounding block 52, and the wire clamp 40 squeeze the loop braided layer 33, thereby increasing the contact area between the loop braided layer 33 and the first loop conductor 12 to meet the current return.

[0071] Furthermore, an insulating limiting step 510 is formed on the outer peripheral wall of the intermediate insulator 51 , and an installation limiting step 110 is correspondingly formed on the inner wall of the second end of the first dielectric body A11 .

[0072] In other embodiments, the intermediate installation unit also includes a second fixing member 41; a second installation step 4000 is opened on the inner wall of the wire clamp 40, and the second installation step 4000 abuts against the end face of the cable sheath 30; the end of the grounding braided layer 31 after being folded back extends radially outward from the wire clamp; the second fixing member 41 is sleeved on the radial outside of the end of the grounding braided layer 31 after being folded back, which not only stably electrically connects the grounding braided layer 31 with the wire clamp 40, but also can be electrically connected to the first metal shell 10 through the second fixing member 41; the second fixing member 41 can be a C-ring or a clamp.

[0073] When the main module and the wiring module are assembled, the first metal shell 10 is threadedly connected to the wire clamp 40 through the external thread provided on the outside of the wire clamp 40 and the corresponding internal thread provided on the inner wall of the first metal shell 10, so that the two modules can be quickly assembled. Furthermore, the cable sheath 30 is also provided with a tail screw sleeve 42, which can also be threadedly connected to the wire clamp 40; in order to facilitate tightening during the assembly process, a clamping plane is provided on the second end of the first metal shell 10 and the outer peripheral surface of the tail screw sleeve 42 for easy wrench clamping or hand grasping.

[0074] Referring to FIG. 4(a)-(e), the assembly process of the main module and the wiring module will be described in detail below, including the following steps:

[0075] According to a set length, peeling off the layers of the cable to expose a set length of the first inner conductor, an inner insulation layer, a loop braided layer, and a ground braided layer;

[0076] The wire clamp sleeve is arranged outside the cable sheath, the grounding braided layer is folded back to expose a part of the outer insulating layer, the grounding braided layer after the folding back is attached to the end surface and the outer peripheral wall of the wire clamp, and the grounding braided layer is fixed by the second fixing member;

[0077] The grounding block, the intermediate insulator and the first fixing member are sequentially sleeved on the exposed outer insulating layer, the grounding block abuts against the grounding braided layer, and the first installation step of the first fixing member abuts against the end surface of the outer insulating layer;

[0078] Folding the loop braided layer in reverse order to make it adhere to the end surface and the outer peripheral wall of the first fixing member;

[0079] The cable conductor is electrically connected to the first inner conductor; the wire clamp is assembled in place, and the grounding braided layer is folded back and fixed to obtain a wiring module;

[0080] Assemble the first dielectric body A from the first end of the first metal shell into the first metal shell; then assemble the first loop conductor from the second end of the first dielectric body A into the first dielectric body A; then assemble the first dielectric body B from the second end of the first loop conductor into the first loop conductor to obtain a main body module;

[0081] The wiring module is inserted into the first dielectric body B, and the first metal shell and the wire clamp are tightened, so that the first metal shell is electrically connected to the grounding braided layer, and the first loop conductor is electrically connected to the loop braided layer.

[0082] See also Figure 2 , Figure 5 and Figure 6 , the connector proposed in the present invention can also achieve accurate matching and reliable locking of the first connection component 1 and the second connection component 2. Specifically, the first end of the first dielectric body A11 extends axially outside the first end of the first loop conductor 12; the first end of the first metal shell 10 extends axially outside the first end of the first dielectric body A11; and the first end of the first dielectric body B13 extends to the axial outside of the first end of the first metal shell 10; similarly, the first end of the second metal shell 20 extends to the axial outside of the first ends of the second dielectric body A21 and the second loop conductor 22; the first end of the second dielectric body B23 extends to the axial outside of the first end of the second metal shell 20; that is, for the first connection unit 1 and the second connection unit 2, The first ends of its parts are not on the same axial plane. When the first connection unit 1 and the second connection unit 2 are mated, the first dielectric body B13 and the second dielectric body B23 are in contact first. The lengthened setting of the first dielectric body B13 and the second dielectric body B23 can not only meet the creepage distance, but also achieve effective axial mutual matching because it is easier to observe. As the first connection unit 1 and the second connection unit 2 are inserted into each other, the shell docking piece 15 contacts the opening of the second metal shell 23 again, and then the first inner conductor 14 and the second inner conductor 24 are in contact, and finally the first loop conductor 12 and the second loop conductor 22 are electrically connected. That is, through "staggered mating", not only can the accuracy of mating be guaranteed, but also based on the consideration of the meshing force when each loop is in electrical contact, in the process of staggered mating, the force is dispersed to different time points to avoid possible damage to various components during the mating process.

[0083] In order to realize the locking state and the separation state of the first connection unit and the second connection unit by relying on the quick unit; the first connection component 1 and the second connection component 2 are locked and separated by the quick lock unit, specifically, the quick lock unit includes a quick lock screw sleeve 60, a quick lock ball 61 and a quick lock spring 62; wherein, the outer peripheral wall of the first metal shell 10 is provided with a shell limiting step 102; the inner wall of the quick lock screw sleeve 60 is convexly provided with a quick lock protrusion 600, and the quick lock protrusion 600 has a quick lock limiting surface 6000 and an unlocking Guide surface 6001; the two ends of the quick-lock spring 62 are respectively abutted against the shell limit step 102 and the quick-lock limit surface 6000; the quick-lock screw sleeve 60 is slidably sleeved outside the first metal shell 10, and the quick-lock spring 62 is sleeved outside the first metal shell 10 and respectively abuts against the first metal shell 10 and the quick-lock screw sleeve 60; the outer peripheral wall of the first metal shell 10 is provided with a plurality of quick-lock through holes 101 along the circumferential direction; the outer peripheral wall of the second metal shell 20 is correspondingly provided with a plurality of quick-lock grooves 201.

[0084] In the locked state, the quick-lock ball 61 abuts against the quick-lock screw sleeve 60 and the quick-lock groove 201 respectively through the quick-lock through hole 101; when the quick-lock screw sleeve 60 is pushed toward the second end of the first connecting unit, the quick-lock unit changes from the locked state to the separated state. At this time, the quick-lock ball 61 slides along the unlocking guide surface 6001, and the quick-lock spring 62 is compressed until the abutting pressure of the quick-lock protrusion 600 on the quick-lock ball 61 disappears, and the quick-lock ball 61 partially protrudes out of the quick-lock through hole 101 and abuts against other positions of the quick-lock screw sleeve 60, and the quick-lock ball 61 does not abut against the quick-lock groove, that is, it enters the separated state.

[0085] In one embodiment, in order to facilitate the operator to observe whether the first connection unit and the second connection unit are completely separated, a reset indicator strip 63 is provided on the outer peripheral wall of the first metal shell 10 near its first end, and the reset indicator strip 63 can be a brightly colored rubber ring.

[0086] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high voltage and high current coaxial cable connection assembly, characterized in that: The invention comprises a mating part and a cable connected to the mating part; the mating part comprises a first metal shell, a first dielectric body A arranged in the first metal shell, a first loop conductor arranged in the first dielectric body A, a first dielectric body B arranged in the first loop conductor, and a first inner conductor arranged in the first dielectric body B; the cable comprises, from outside to inside, a cable sheath, a grounding braided layer, an outer insulating layer, a loop braided layer, an inner insulating layer, and a cable conductor; Wherein, the first inner conductor is electrically connected to the cable conductor; the first loop conductor is electrically connected to the loop braided layer; the first metal shell is electrically connected to the ground braided layer through a connecting unit; The connecting unit includes a wire clamp sleeved on the outside of the cable sheath, the grounding braided layer is folded back and electrically connected to one end of the wire clamp and the first metal shell, an external thread is provided on the outside of the wire clamp, and an internal thread is correspondingly provided on the inner wall of the first metal shell, and the first metal shell is threadedly connected to the wire clamp.

2. A high voltage and high current coaxial cable connection assembly according to claim 1, characterized in that: The mating part also includes a shell docking piece; a first assembly step is provided on the inner wall of the first metal shell, and a first mating step is convexly provided on the outer peripheral wall of the first dielectric body A; the shell docking piece is arranged between the first metal shell and the first dielectric body A; the shell docking piece is interference fit with the inner wall of the first metal shell and is close to the radial outer side of the first end of the first dielectric body A.

3. The high voltage and high current coaxial cable connection assembly according to claim 1, characterized in that: It also includes an intermediate installation unit, which includes a first fixing member arranged at one end radially outside the outer insulating layer; the end of the loop braided layer after being folded back extends radially outside the first fixing member; the inner wall of the first fixing member is provided with a first installation step, and the first installation step rests on the end face of the outer insulating layer.

4. A high voltage and high current coaxial cable connection assembly according to claim 3, characterized in that: The intermediate installation unit further comprises an intermediate insulator and a grounding block which are sequentially arranged along the axial direction, wherein the intermediate insulator and the grounding block are sleeved outside the outer insulating layer and arranged between the loop braided layer and the grounding braided layer; An insulating limiting step is formed on the outer peripheral wall of the intermediate insulator, and an installation limiting step is formed on the inner wall of the second end of the first dielectric body A correspondingly.

5. The high voltage and high current coaxial cable connection assembly according to claim 3, characterized in that: The intermediate installation unit also includes a second fixing piece; a second installation step is provided on the inner wall of the wire clamp, and the second installation step abuts against the end face of the cable sheath; one end of the grounding braided layer after being folded back extends radially outward from the wire clamp; the second fixing piece is sleeved on the radial outward from one end of the grounding braided layer after being folded back, and is electrically connected to the first metal shell.

6. A method for assembling a high-voltage and high-current coaxial cable connection assembly according to any one of claims 1 to 5, characterized in that: It also includes a tail screw sleeve, which is sleeved outside the cable sheath and is threadedly connected to the wire clamp.

7. An assembly method for a high voltage and high current coaxial cable connection assembly as claimed in any one of claim 5, characterized in that: The steps include: According to a set length, peeling off the layers of the cable to expose a set length of the first inner conductor, an inner insulation layer, a loop braided layer, and a ground braided layer; The wire clamp sleeve is arranged outside the cable sheath, the grounding braided layer is folded back to expose a part of the outer insulating layer, the grounding braided layer after the folding back is attached to the end surface and the outer peripheral wall of the wire clamp, and the grounding braided layer is fixed by the second fixing member; The grounding block, the intermediate insulator and the first fixing member are sequentially sleeved on the exposed outer insulating layer, the grounding block abuts against the grounding braided layer, and the first installation step of the first fixing member abuts against the end surface of the outer insulating layer; Folding the loop braided layer in reverse order to make it adhere to the end surface and the outer peripheral wall of the first fixing member; The cable conductor is electrically connected to the first inner conductor; the wire clamp is assembled in place, and the grounding braided layer is folded back and fixed to obtain a wiring module; Assemble the first dielectric body A from the first end of the first metal shell into the first metal shell; then assemble the first loop conductor from the second end of the first dielectric body A into the first dielectric body A; then assemble the first dielectric body B from the second end of the first loop conductor into the first loop conductor to obtain a main body module; The wiring module is inserted into the first dielectric body B, and the first metal shell and the wire clamp are tightened, so that the first metal shell is electrically connected to the grounding braided layer, and the first loop conductor is electrically connected to the loop braided layer.

8. A high voltage and high current coaxial cable connector, characterized in that: The invention comprises a first connection unit and a second connection unit matched with each other, wherein the first connection unit is a high-voltage and high-current coaxial cable connection assembly according to any one of claims 2 to 5; the second connection unit comprises a second metal shell, a second dielectric body A is arranged in the second metal shell, a second loop conductor is arranged in the second dielectric body A, a second dielectric body B is arranged in the second loop conductor, and a second inner conductor is arranged in the second dielectric body B; When the first connection unit is matched with the second connection unit, the second inner conductor is electrically connected to the first inner conductor, the second loop conductor is electrically connected to the first loop conductor, and the second metal shell is electrically connected to the first metal shell.

9. The high voltage and high current coaxial cable connector according to claim 8, characterized in that: The first end of the first dielectric body A extends axially outside the first end of the first loop conductor; the first end of the first metal shell extends axially outside the first end of the first dielectric body A; the first end of the first dielectric body B extends to the axial outside of the first end of the first metal shell; The first end of the second metal shell extends to the axial outside of the first end of the second dielectric body A and the second loop conductor; the first end of the second dielectric body B extends to the axial outside of the first end of the second metal shell; When the first connecting unit is matched with the second connecting unit, the first dielectric body B is arranged in the second dielectric body B; the first dielectric body A is arranged in the second metal shell; and the second metal shell is arranged in the first metal shell.

10. The high voltage and high current coaxial cable connector according to claim 9, characterized in that: The shell docking piece includes a docking body and a docking elastic arm. The docking body is interference-connected with the first metal shell. When the first connecting unit is matched with the second connecting unit, the docking elastic arm is electrically connected to the inner wall of the second metal shell, and the docking elastic arm rests on the second limiting step of the second metal shell.

11. A high voltage and high current coaxial cable connector according to any one of claims 8 to 10, characterized in that: It also includes a quick lock unit, which includes a quick lock screw sleeve, a quick lock ball and a quick lock spring; the first connecting unit and the second connecting unit rely on the quick unit to achieve a locked state and a separated state; The quick-lock screw sleeve is slidably sleeved outside the first metal shell, the quick-lock spring is sleeved outside the first metal shell and abuts against the first metal shell and the quick-lock screw sleeve respectively; a plurality of quick-lock through holes are opened along the circumferential direction on the outer peripheral wall of the first metal shell; a plurality of quick-lock grooves are correspondingly opened on the outer peripheral wall of the second metal shell; In the locked state, the quick-lock ball abuts against the quick-lock screw sleeve and the quick-lock groove respectively through the quick-lock through hole; In the separated state, the quick-lock screw sleeve compresses the quick-lock spring, and the quick-lock ball portion protrudes out of the quick-lock through hole and abuts against the quick-lock screw sleeve.

12. The high voltage and high current coaxial cable connector according to claim 11, characterized in that: The outer peripheral wall of the first metal shell is provided with a shell limiting step; the inner wall of the quick-lock screw sleeve is convexly provided with a quick-locking protrusion, and the quick-locking protrusion has a quick-locking limiting surface and an unlocking guide surface; the two ends of the quick-locking spring are respectively in contact with the shell limiting step and the quick-locking limiting surface; when the locked state is changed to the separated state, the quick-locking ball slides along the unlocking guide surface.

13. The high voltage and high current coaxial cable connector according to claim 11, characterized in that: A reset indicator strip is disposed on the outer peripheral wall of the first metal shell near the first end thereof.

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