High-voltage electric connector, socket assembly and plug assembly

Abstract

The invention provides a high-voltage electric connector, a socket assembly and a plug assembly. The socket assembly comprises a socket shell and a mounting cylinder, the socket shell is provided with a first end and a second end opposite to the first end in the length direction, and the position, close to the first end, of the inner wall of the socket shell protrudes inwards to form a step part; the mounting cylinder is sleeved in the socket shell and is in sealing fit with the step part, a mounting cavity used for connecting a plug assembly is formed in the mounting cylinder, at least two socket terminals are mounted on one side, close to the first end, of the mounting cylinder, each socket terminal is electrically connected with a conductive socket, and the conductive sockets are located in the mounting cavity; and the socket shell is provided with a positioning part at a position close to the second end. And meanwhile, the matching part matched with the socket assembly is arranged on the plug assembly, and when the socket assembly and the plug assembly are matched in a plugging manner, the plugging angle of the socket assembly and the plug assembly is limited through the positioning matching of the positioning part and the matching part, so that the accurate plugging matching of each conductive socket and a conductive insertion core in the plug assembly is ensured.

Description

Technical Field

[0001] The present application generally relates to the field of high voltage electrical connectors, and more particularly to a high voltage electrical connector, a socket assembly, and a plug assembly. Background Art

[0002] An electrical connector is an electrical component that connects circuits. It is widely used in aerospace, aviation, navigation, railways, field communications, and various instruments and meters. It is one of the common connection devices.

[0003] Each pin of a multi-core electrical connector needs to be correctly connected to the corresponding socket, but traditional electrical connectors often have the phenomenon of incorrect electrical connection between the pin and the socket, which can easily cause damage to the electrical connector. For high-voltage electrical connectors with a withstand voltage of tens or even hundreds of kilovolts, incorrect insertion can easily cause damage to the pins, affecting the safety of the high-voltage electrical connector. In addition, high-voltage electrical connectors have very high requirements for insulation performance. Currently, most high-voltage electrical connector products on the market are non-standard customized models, which are expensive, and the cost of replacing the connector after it is damaged is extremely high.

[0004] Therefore, it is necessary to provide a high voltage electrical connector, a socket assembly and a plug assembly to at least partially solve the above problems. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, a first aspect of the present application provides a socket assembly for plugging and mating with a plug assembly, the socket assembly comprising:

[0007] a socket shell, the socket shell having a first end and a second end opposite to the first end in a length direction, an inner wall of the socket shell protruding inwardly at a position close to the first end to form a step portion; and

[0008] A mounting cylinder, the mounting cylinder is sleeved in the socket shell and is sealed with the step portion, the mounting cylinder is formed with a mounting cavity for connecting the plug assembly, and the mounting cylinder is provided with at least two socket terminals on a side close to the first end, each of the socket terminals is electrically connected to a conductive socket, and the conductive socket is located in the mounting cavity;

[0009] The socket shell is provided with a positioning portion at a position close to the second end. When the socket assembly and the plug assembly are plugged in and matched, the positioning portion is used to connect to the matching portion of the plug assembly so that the conductive socket and the conductive plug core of the plug assembly can be accurately plugged in and matched.

[0010] Optionally, the positioning portion is configured as a positioning protrusion, a positioning groove or a positioning notch.

[0011] Optionally, the mounting tube, the step portion and the socket shell enclose a first connecting groove extending along the length direction, and when the socket assembly and the plug assembly are plugged in, the plug assembly is at least partially located in the first connecting groove.

[0012] Optionally, a crown spring is provided in the conductive socket; and / or

[0013] An annular sealing groove is arranged on the outer surface of the installation cylinder, and a sealing member is arranged between the sealing groove and the step portion.

[0014] A second aspect of the present application provides a plug assembly for plugging and mating with a socket assembly, the plug assembly comprising:

[0015] A plug barrel, the plug barrel having a cable end and a connection end opposite to the cable end along the length direction, the plug barrel having an inner cavity filled with insulating material;

[0016] a high voltage cable sealingly connected to the cable end and partially extending into the inner cavity; and

[0017] A conductive plug core, which is detachably sealed and mounted to the connection end and is electrically connected to the high-voltage cable;

[0018] There are at least two conductive plugs, and a mating portion is provided on the outer surface of the plug tube. When the plug assembly and the socket assembly are plugged in and mated, the mating portion is used to connect to the positioning portion of the socket assembly so that the conductive plug is accurately plugged in and mated with the conductive socket of the socket assembly.

[0019] Optionally, the insulating material is insulating glue, and the inner wall of the plug tube is provided with protrusions or grooves.

[0020] Optionally, the plug barrel is formed with a second connecting groove extending along the length direction at the connecting end, and when the plug assembly and the socket assembly are plugged in and mated, the socket assembly is at least partially located in the second connecting groove.

[0021] Optionally, along the length direction, the inner side wall of the second connecting groove exceeds the outer side wall of the second connecting groove; the inner side wall of the second connecting groove is formed with the connecting end, and the connecting end is provided with an external thread;

[0022] The plug assembly further comprises:

[0023] a fixing plate, the fixing plate being sealingly mounted to the connection end and being conductively connected to the high-voltage cable, the conductive insert being detachably and sealingly connected to the fixing plate; and

[0024] A locking sleeve, wherein the locking sleeve is provided with an internal thread matching the connecting end, and the locking sleeve is provided with a through hole for the conductive insert to pass through.

[0025] Optionally, the size of the inner cavity at the connection end is configured to match the size of the high-voltage cable; and / or

[0026] When the locking sleeve is connected to the connecting end, the outer surface of the locking sleeve is flush with the surface of the inner side wall of the second connecting groove.

[0027] A third aspect of the present application provides a high voltage electrical connector, the high voltage electrical connector comprising:

[0028] According to the socket assembly described in the first aspect of the present application, the socket shell of the socket assembly has a positioning portion; and

[0029] According to the plug assembly described in the second aspect of the present application, the plug barrel of the plug assembly has a mating portion;

[0030] When the socket shell and the plug barrel are plugged and matched, the positioning portion is connected to the matching portion so that the conductive plug core of the plug assembly is accurately plugged and matched with the conductive socket of the socket assembly.

[0031] Optionally, the outer surface of the socket shell is provided with a first annular protrusion, and the high-voltage electrical connector further comprises:

[0032] A socket flange, which is sleeved outside the socket shell and is sealed with the first annular protrusion, and is used to connect to the equipment to be installed;

[0033] A connecting flange, wherein the connecting flange is sleeved outside the socket shell and is formed with a mounting groove for accommodating the first annular protrusion, and the connecting flange and the socket flange are located on both sides of the first annular protrusion; and

[0034] A first locking member is provided, wherein the first locking member connects the socket flange and the connecting flange to fix the socket assembly to the device to be installed.

[0035] Optionally, the plug assembly is further provided at the cable end with:

[0036] A wire positioning plate, which is sleeved outside the high-voltage cable and is threadedly connected to the plug barrel;

[0037] A grounding sleeve, the grounding sleeve having a first connecting portion and a second connecting portion, the first connecting portion being sleeved outside the high-voltage cable and conductively connected to the high-voltage cable, and the second connecting portion extending along a radial direction of the high-voltage cable;

[0038] A compression sleeve, wherein along the length direction, one end of the compression sleeve is pressed against the second connection portion, and the other end of the compression sleeve is wrapped outside the high-voltage cable, so that the first connection portion of the grounding sleeve is pressed against the high-voltage cable; and

[0039] A locking cap is sleeved outside the compression sleeve and plug-connected with the plug barrel so that the second connecting portion of the grounding sleeve is pressed tightly between the plug barrel and the compression sleeve.

[0040] Optionally, a second annular protrusion is provided on the outer surface of the plug barrel, and the locking cap abuts against the second annular protrusion when the plug barrel is plugged and connected, and the socket shell abuts against the second annular protrusion when the socket shell and the plug barrel are plugged and matched;

[0041] The high voltage electrical connector also includes:

[0042] A locking flange, which is sleeved outside the socket shell and the plug barrel and is threadedly connected to the locking cap; and

[0043] A second locking member is provided, wherein the second locking member connects the locking flange and the connecting flange to fix the plug assembly to the socket assembly.

[0044] The high-voltage electrical connector of the present application is a multi-core high-voltage electrical connector. In order to ensure that each conductive plug core can be accurately inserted into the corresponding conductive socket when the socket assembly and the plug assembly are plugged in, the present application sets a positioning portion on the socket assembly and a mating portion on the plug assembly. The positioning and mating portion are used to limit the plug-in angle of the socket assembly and the plug assembly, thereby ensuring the accuracy of the plug-in.

[0045] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The following drawings of the embodiments of the present application are hereby used as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the principles of the present application. In the drawings,

[0047] Figure 1 It is a schematic diagram of a three-dimensional cross-sectional structure of a high-voltage electrical connector according to a preferred embodiment of the present application;

[0048] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle plug high voltage electrical connector

[0049] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of the plug assembly;

[0050] Figure 4 for Figure 1 Another structural schematic diagram of the plug assembly;

[0051] Figure 5 for Figure 1 A schematic cross-sectional structure diagram of the socket assembly; and

[0052] Figure 6 for Figure 1 Another structural schematic diagram of the socket assembly.

[0053] Description of reference numerals:

[0054] 100, high voltage electrical connector; 101, socket assembly; 102, plug assembly; 103, socket flange; 104, connecting flange; 105, locking flange; 106, first locking member; 107, second locking member; 110, socket shell; 111, first end; 112, second end; 113, first step portion; 114, positioning groove; 115, limiting groove; 116, first annular protrusion; 117, first annular groove; 118, first connecting groove; 119, second annular groove; 120, mounting cylinder; 121, socket terminal; 122, conductive socket; 123, second step portion; 124, sealing groove; 125. Installation cavity; 126. First locking sleeve; 127. Limiting protrusion; 130. Plug barrel; 131. Cable end; 132. Connection end; 133. Inner cavity; 134. Protruding key; 135. Second connection groove; 136. Inner wall; 137. Outer wall; 138. Second annular protrusion; 140. High-voltage cable; 141. Conductive core; 142. Insulating layer; 151. Conductive plug core; 152. Fixing plate; 153. Second locking sleeve; 154. Notch; 155. Wire positioning plate; 156. Grounding sleeve; 157. Compression sleeve; 158. Locking cap; 161. First connection part; 162. Second connection part. DETAILED DESCRIPTION

[0055] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application embodiments, some technical features well known in the art are not described.

[0056] In order to thoroughly understand the implementation of the present application, a detailed structure will be presented in the following description. Obviously, the implementation of the implementation of the present application is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the present application is described in detail below, but in addition to these detailed descriptions, the present application may also have other implementations and should not be interpreted as being limited to the implementations presented here.

[0057] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application, and the singular forms of "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. The terms "upper", "lower", "front", "back", "left", "right" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0058] Ordinal numbers such as “first” and “second” cited in the present application are merely identifications and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term “first component” itself does not imply the existence of the “second component”, and the term “second component” itself does not imply the existence of the “first component”.

[0059] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0060] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0061] Below, we will refer to the attached Figures 1 to 6 The specific embodiments of the present application are described in more detail in the accompanying drawings, which show representative embodiments of the present application and do not limit the present application.

[0062] See also Figure 1 and Figure 2, a high voltage electrical connector 100 is provided for this application. It includes a socket assembly 101 and a plug assembly 102. Figure 3 and Figure 4 A specific embodiment of the plug assembly 102 of the present application is shown in FIG. Figure 5 and Figure 6 , which is a specific implementation of the socket assembly 101 of the present application.

[0063] The socket assembly 101 and the plug assembly 102 are plugged together to form the high voltage electrical connector 100 of the present application. The high voltage electrical connector 100 is a multi-core high voltage electrical connector 100, that is, the plug assembly 102 has at least two conductive plug cores 151, and the corresponding socket assembly 101 has at least two conductive sockets 122.

[0064] like Figure 5 and Figure 6 As shown, the socket assembly 101 includes a socket housing 110 and a mounting cylinder 120. The socket housing 110 has a first end 111 and a second end 112 opposite to the first end 111 along its length direction.

[0065] The inner wall of the socket housing 110 is protruded inwardly to form a step portion near the first end 111. The mounting cylinder 120 is sleeved in the socket housing 110 and is sealed with the step portion.

[0066] The installation cylinder 120 is formed with an installation cavity 125, and the installation cavity 125 is used to connect the plug assembly 102. In other words, when the socket assembly 101 and the plug assembly 102 are plugged and matched, a part of the plug assembly 102 extends into the installation cavity 125.

[0067] Specifically, the mounting barrel 120 is mounted with at least two socket terminals 121 on one side close to the first end 111, each socket terminal 121 is electrically connected to a conductive socket 122, and the conductive socket 122 is located in the mounting cavity 125. The socket housing 110 is provided with a positioning portion at a position close to the second end 112.

[0068] refer to Figure 3 and Figure 4 In this embodiment, the plug assembly 102 includes a plug barrel 130 , a high-voltage cable 140 and a conductive plug core 151 .

[0069] The plug barrel 130 has a cable end 131 and a connection end 132 opposite to the cable end 131 along its length direction. The plug barrel 130 has an inner cavity 133 filled with insulating material.

[0070] The high voltage cable 140 is sealed and connected to the cable end 131 and partially extends into the inner cavity 133. The conductive insert 151 is detachably and sealedly mounted to the connection end 132 and electrically connected to the high voltage cable 140. Thus, the inner cavity 133 of the plug barrel 130 is a sealed chamber.

[0071] The outer surface of the plug barrel 130 is provided with a mating portion configured to match the positioning portion: when the socket assembly 101 and the plug assembly 102 are plugged in and out, the positioning portion is connected to the mating portion, so that the conductive socket 122 is accurately plugged in and out with the conductive insert 151 of the plug assembly 102 .

[0072] It can be understood that when the socket assembly 101 and the plug assembly 102 are plugged together, the connection end 132 of the plug barrel 130 is inserted into the installation cavity 125 from the second end 112 of the socket shell 110 to achieve the plugging and matching of the conductive plug core 151 and the conductive socket 122. Because there are at least two conductive plug cores 151, this design can prevent the plugging angle of the conductive plug core 151 and the conductive socket 122 from being determined, avoiding the situation of wrong plugging. At this time, the length direction of the socket shell 110 is parallel to the length direction of the plug barrel 130.

[0073] For example, the positioning portion can be configured as a positioning protrusion, a positioning groove 114 or a positioning notch. Figure 5 In this embodiment, the positioning portion is a positioning groove 114, and the positioning groove 114 is arranged on the inner wall of the second end 112 of the socket shell 110. Figure 3 Correspondingly, the mating portion provided on the plug assembly 102 is configured as a raised key 134 that matches the positioning groove 114 .

[0074] First combine Figure 1 , Figure 2 , Figure 5 and Figure 6 The structure of the socket assembly 101 in this embodiment is described.

[0075] In this embodiment, the mounting tube 120 and the socket housing 110 are both roughly constructed as cylindrical structures. Figure 5 As shown, the socket housing 110 is formed with a first step portion 113 on the inner side near the first end 111, and the outer diameter of the mounting cylinder 120 matches the inner diameter of the first step portion 113. An annular second step portion 123 is formed on the outer surface of the mounting cylinder 120. During assembly, the mounting cylinder 120 is inserted into the socket housing 110 from the first end 111, and the second step portion 123 abuts against the first step portion 113.

[0076] The outer surface of the installation cylinder 120 is provided with an annular sealing groove 124. A sealing member is provided between the annular sealing groove 124 and the first step portion 113 to ensure that the installation cylinder 120 and the socket housing 110 are sealed and connected. Figure 5 In the embodiment, two annular sealing grooves 124 are spaced apart on the outer surface of the mounting cylinder 120 along the length direction. A groove and a sealing member are also provided between the first step portion 113 and the second step portion 123 to improve the sealing performance of the connection between the mounting cylinder 120 and the socket shell 110.

[0077] In order to ensure that the relative installation positions of the installation cylinder 120 and the socket shell 110 are fixed during the assembly process, improve the efficiency of product production and assembly, and also to prevent the installation cylinder 120 and the socket shell 110 from rotating relative to each other, see Figure 5 The first step portion 113 is also provided with a limiting groove 115 at a position close to the first end 111. Correspondingly, at a position close to the second step portion 123, a limiting protrusion 127 matching the limiting groove 115 is formed on the outer surface of the mounting cylinder 120, so as to realize a reliable connection between the mounting cylinder 120 and the socket shell 110, and ensure that the relative position of the conductive socket 122 and the socket shell 110 is fixed. In other words, the limiting groove 115 and the limiting protrusion 127 can ensure that the relative position of each conductive socket 122 and the positioning groove 114 is determined.

[0078] See also Figure 5 In this embodiment, the socket assembly 101 further includes a first locking sleeve 126, which is mounted on the first end 111 and threadedly engaged with the socket housing 110. The first locking sleeve 126 is provided with a through hole that allows the socket terminal 121 to pass through. It can be understood that the through hole only allows the socket terminal 121 to pass through, but does not allow the installation cylinder 120 to pass through. Figure 1 , the first locking sleeve 126 is configured as a locking nut.

[0079] The assembly process of the plug assembly 102 of the present application is as follows: after the installation cylinder 120 is plugged and connected with the socket shell 110, the first locking sleeve 126 is operated to be threadedly connected with the socket shell 110, so as to press the installation cylinder 120 between the first locking sleeve 126 and the first step portion 113. Specifically, the locking nut abuts against and presses the second step portion 123, so as to further improve the reliability of the connection between the installation cylinder 120 and the socket shell 110.

[0080] In the socket shell 110, the mounting cylinder 120, the first step portion 113 and the socket shell 110 enclose a first connection groove 118 extending in the length direction. A portion of the outer surface of the mounting cylinder 120, a portion of the inner wall surface of the socket shell 110 and the step surface of the first step portion 113 constitute the inner wall of the first connection groove 118. When the socket assembly 101 and the plug assembly 102 are plugged in, the plug assembly 102 is at least partially located in the first connection groove 118. The connection position of the socket assembly 101 and the plug assembly 102 is in the mounting cavity 125, and the creepage distance can be increased by the inner wall of the mounting cavity 125 and the inner wall of the first connection groove 118. In addition, the first connection groove 118 can also ensure the stability of the connection between the socket assembly 101 and the plug assembly 102, and protect the conductive plug 151 located in the mounting cavity 125.

[0081] Furthermore, a second annular groove 119 is provided on the outer surface of the socket shell 110 , so as to increase the creepage distance by increasing the area of ​​the outer surface of the socket shell 110 .

[0082] For example, in order to ensure reliable connection between the conductive insert 151 and the conductive socket 122 , a crown spring (not shown) may be disposed in the conductive socket 122 .

[0083] Next, combine Figure 1 , Figure 2 , Figure 3 to Figure 4 The structure of the plug assembly 102 in this embodiment is described.

[0084] The plug barrel 130 in this embodiment is also roughly cylindrical. The insulating material filled in the inner cavity 133 can be selected from insulating glue to improve the pressure resistance of the plug assembly 102 and avoid high-voltage breakdown. The inner wall of the plug barrel 130 is a smooth inner wall to avoid discharge at sharp positions.

[0085] The inner wall of the plug barrel 130 may be provided with protrusions or grooves to increase the friction with the insulating glue. Figure 3 The inner wall of the plug barrel 130 is provided with three first annular grooves 117 spaced apart near the cable end 131, so that the insulating glue and the plug barrel 130 can be more closely matched to prevent the insulating glue and the inner wall of the plug barrel 130 from being separated. If the insulating glue is separated from the inner wall of the plug barrel 130, the insulation performance may be reduced or even the insulation may fail, affecting the safety of the plug assembly 102.

[0086] like Figure 3 As shown in FIG. 1 , the plug barrel 130 is formed with a second connecting groove 135 extending along the length direction at the connecting end 132. When the plug assembly 102 and the socket assembly 101 are plugged and matched, the socket assembly 101 is at least partially located in the second connecting groove 135. Figure 1 and Figure 2Specifically, the installation tube 120 is inserted into the second connecting groove 135.

[0087] Along the length direction of the plug barrel 130, the inner side wall 136 of the second connection slot 135 exceeds the outer side wall 137 of the second connection slot 135. It can be understood that the inner side refers to the side close to the center of the plug barrel 130. The inner side wall 136 of the second connection slot 135 is formed with a connection end 132 for connecting the conductive plug core 151.

[0088] Specifically, refer to Figure 3 The plug assembly 102 further includes a fixing plate 152 and a second locking sleeve 153. The fixing plate 152 is sealed and mounted to the connection end 132 and is conductively connected to the high-voltage cable 140, and the conductive plug 151 is detachably and sealedly connected to the fixing plate 152. For example, a mounting socket can be provided on the fixing plate 152, and the conductive plug 151 is plugged into the mounting socket, and a sealant is provided between the conductive plug 151 and the mounting socket to achieve a sealing effect. The detachable manner facilitates the replacement of the conductive plug 151.

[0089] like Figure 3 As shown in FIG. 1 , a notch 154 is provided at the position of the connection end 132, and the fixing plate 152 is clamped at the notch 154, and a part of the fixing plate 152 abuts against the end surface of the notch 154. It can be understood that the notch 154 is used to limit the rotation of the fixing plate 152 relative to the plug barrel 130, ensuring that the positions of the fixing plate 152 and each conductive plug core 151 and the positioning portion are relatively fixed. Those skilled in the art can also flexibly adopt other structural forms to position the fixing plate 152.

[0090] The connecting end 132 is provided with an external thread. The second locking sleeve 153 is provided with an internal thread matching the connecting end 132, and the second locking sleeve 153 is provided with a through hole for the conductive plug 151 to pass through. It can be understood that the through hole of the second locking sleeve 153 only allows the conductive plug 151 to pass through, but does not allow the entire fixing plate 152 to pass through. When the fixing plate 152 with the conductive plug 151 installed is installed to the connecting end 132, the second locking sleeve 153 is operated to be threadedly connected with the connecting end 132, so that the fixing plate 152 and the conductive plug 151 can be pressed between the second locking sleeve 153 and the connecting end 132.

[0091] In the plug assembly 102 of the present application, the conductive plug 151 can be replaced by replacing part of the fixing plate 152 as a whole, or the conductive plug 151 can be directly replaced separately. In the socket assembly 101 of the present application, the socket terminal 121 can be replaced by replacing part of the mounting cylinder 120 as a whole. Therefore, when the high-voltage electrical connector 100 of the present application is partially damaged, only the corresponding part needs to be replaced, and the entire part does not need to be replaced, which effectively saves costs and is more convenient to use.

[0092] refer to Figure 2 and Figure 3 The size of the inner cavity 133 of the plug barrel 130 at the connection end 132 is configured to match the size of the high-voltage cable 140. As a result, the high-voltage cable 140 can be clamped with the plug barrel 130, ensuring a stable and reliable connection between the high-voltage cable 140 and the conductive plug core 151. When the second locking sleeve 153 is connected to the connection end 132, the outer surface of the second locking sleeve 153 is flush with the surface of the inner side wall 136 of the second connection groove 135, specifically, is flush with the outer surface of the inner side wall 136.

[0093] When the plug assembly 102 and the socket assembly 101 are plugged into each other, the outer side wall 137 of the second connecting groove 135 is inserted into the first connecting groove 118 .

[0094] The plug assembly 102 is also provided with a wire positioning plate 155, a grounding sleeve 156, a compression sleeve 157 and a locking cap 158 at the cable end 131. The wire positioning plate 155 is sleeved outside the high-voltage cable 140 and is threadedly connected to the plug barrel 130 to fix the high-voltage cable 140 and ensure that the high-voltage cable 140 and the plug barrel 130 remain relatively stable.

[0095] The high voltage cable 140 includes a conductive core 141 and an outer insulating layer 142 wrapped around the conductive core 141. Figures 1 to 3 The portion of the high-voltage cable 140 extending into the inner cavity 133 does not have an external insulating layer 142 and can be obtained by stripping the insulating layer 142 of a predetermined length region of the high-voltage cable 140 at the end position by a peeling device.

[0096] The ground sleeve 156 has a first connection portion 161 and a second connection portion 162 . The first connection portion 161 is sleeved outside the high-voltage cable 140 and is conductively connected to the high-voltage cable 140 . The second connection portion 162 extends along the radial direction of the high-voltage cable 140 .

[0097] Along the length direction of the plug barrel 130, one end of the compression sleeve 157 is pressed against the second connection part 162, and the other end of the compression sleeve 157 is wrapped outside the high-voltage cable 140, so that the first connection part 161 of the grounding sleeve 156 is pressed against the high-voltage cable 140. The locking cap 158 is sleeved outside the compression sleeve 157 and plug-connected with the plug barrel 130, so that the second connection part 162 of the grounding sleeve 156 is pressed between the plug barrel 130 and the compression sleeve 157. In other words, the compression sleeve 157 is spaced apart from the plug barrel 130 and fixed by the locking cap 158.

[0098] The first connection portion 161 of the ground sleeve 156 is wrapped around the high voltage cable 140 and partially inserted into the insulating layer 142 of the high voltage cable 140. The second connection portion 162 of the ground sleeve 156 abuts against the end surface of the plug barrel 130 at the cable end 131.

[0099] Along the axial direction of the high-voltage cable 140 (also the length direction of the plug barrel 130), the end of the compression sleeve 157 close to the plug barrel 130 is cylindrical, and the end of the compression sleeve 157 away from the plug barrel 130 is conical. Figure 3 The shape of the locking cap 158 is configured to be compatible with the compression sleeve 157. It can be understood that, through this conical design, the force can be evenly distributed on the surface of the high-voltage cable 140, avoiding excessive pressure on a local area of ​​the high-voltage cable 140 and damaging the outer insulation layer 142, thereby improving the safety of the plug assembly 102. Preferably, the connection position between the locking cap 158 and the high-voltage cable 140 is designed to be a smooth surface (see Figure 3 ), to avoid damaging the outer insulation layer 142 of the high-voltage cable 140.

[0100] The outer surface of the first connecting portion 161 of the grounding sleeve 156 and the inner surface of the clamping sleeve 157 are respectively provided with matching protrusion and groove structures, and the grounding sleeve 156 and the clamping sleeve 157 are locked and fixed by the engagement of the protrusion and the groove to avoid relative movement of the two along the axial direction of the high-voltage cable 140, thereby ensuring reliable grounding.

[0101] refer to Figure 1 , Figure 2 and Figure 5 The high voltage electrical connector 100 further includes a socket flange 103 , a connecting flange 104 , a locking flange 105 , a first locking member 106 and a second locking member 107 .

[0102] The outer surface of the socket shell 110 is provided with a first annular protrusion 116 . The socket flange 103 is sleeved outside the socket shell 110 and is sealed and connected with the first annular protrusion 116 .

[0103] The socket flange 103 is used to connect to the equipment to be installed. The high-voltage electrical connector 100 of the present application can connect devices inside and outside the housing of the electrical equipment. The electrical equipment can specifically be high-voltage electrical equipment such as an X-ray source, a microwave generator or a high-voltage power supply. The electrical equipment can also be an oil tank inside the electrical equipment. Exemplarily, the high-voltage electrical connector 100 of the present application is installed to the oil tank housing of a high-voltage power supply or the oil tank housing of an X-ray source. That is, the socket flange 103 can be sealed and installed to the oil tank housing.

[0104] See also Figure 1 and Figure 2 The connecting flange 104 is sleeved outside the socket shell 110, and the connecting flange 104 and the socket flange 103 are located on both sides of the first annular protrusion 116. The connecting flange 104 is formed with a mounting groove for accommodating the first annular protrusion 116. The first locking member 106 connects the socket flange 103 and the connecting flange 104, thereby fixing the socket assembly 101 to the device to be installed.

[0105] Figure 2 In the embodiment, through holes are respectively provided on the connecting flange 104 and the socket flange 103, and the connecting flange 104 and the socket flange 103 can be fixed to the oil tank housing by locking bolts (not shown). A through hole communicating with the mounting groove is also provided on the connecting flange 104, and the first locking member 106 passes through the through hole and is connected to the corresponding blind hole on the socket flange 103. In the illustrated example, the first locking member 106 is a bolt. After the first locking member 106 connects the socket flange 103 and the connecting flange 104, the first annular protrusion 116 is pressed between the mounting groove, the first locking member 106 and the socket flange 103. In order to improve the sealing performance, a sealing member is provided between the socket flange 103 and the first annular protrusion 116.

[0106] See also Figure 1 and Figure 2 The outer surface of the plug barrel 130 is provided with a second annular protrusion 138. When the socket shell 110 and the plug barrel 130 are plugged and matched, the socket shell 110 abuts against the second annular protrusion 138.

[0107] The second annular protrusion 138 is disposed near the cable end 131 of the plug barrel 130. In other words, when the socket shell 110 and the plug barrel 130 are connected, most of the plug barrel 130 is located inside the socket shell 110, which increases the creepage distance and ensures the withstand voltage insulation performance of the high-voltage electrical connector 100.

[0108] When the locking cap 158 and the plug barrel 130 are plugged and connected, the locking cap 158 abuts against the second annular protrusion 138. The locking cap 158 and the socket shell 110 are located on both sides of the second annular protrusion 138.

[0109] The locking flange 105 is sleeved outside the socket shell 110 and the plug barrel 130, and is threadedly connected to the locking cap 158. The second locking member 107 connects the locking flange 105 and the connecting flange 104 to fix the plug assembly 102 and the socket assembly 101.

[0110] See also Figure 1 and Figure 2 The locking flange 105 includes a cylindrical main body, which is sleeved outside the plug barrel 130 (wrapped outside the second annular protrusion 138), and the main body extends to the cable end 131 and is threadedly connected and locked with the locking cap 158. The locking flange 105 is provided with a connecting portion on the side away from the cable end 131, and the extending direction of the connecting portion is radially outward. The connecting portion abuts the connecting flange 104. A through hole is provided in the connecting portion. Reference Figure 1 The second locking member 107 is a bolt, and the second locking member 107 connects and fixes the connecting portion of the connecting flange 104 and the locking flange 105 .

[0111] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0112] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed in the present application.

Claims

1. A socket assembly, used for plugging and mating with a plug assembly, characterized in that: The socket assembly comprises: a socket shell, the socket shell having a first end and a second end opposite to the first end in a length direction, an inner wall of the socket shell protruding inwardly at a position close to the first end to form a step portion; and A mounting cylinder, the mounting cylinder is sleeved in the socket shell and is sealed with the step portion, the mounting cylinder is formed with a mounting cavity for connecting the plug assembly, and the mounting cylinder is provided with at least two socket terminals on a side close to the first end, each of the socket terminals is electrically connected to a conductive socket, and the conductive socket is located in the mounting cavity; The socket shell is provided with a positioning portion at a position close to the second end. When the socket assembly and the plug assembly are plugged in and matched, the positioning portion is used to connect to the matching portion of the plug assembly so that the conductive socket and the conductive plug core of the plug assembly can be accurately plugged in and matched.

2. The socket assembly according to claim 1, characterized in that: The positioning portion is configured as a positioning protrusion, a positioning groove or a positioning notch.

3. The socket assembly according to claim 1, characterized in that: The mounting tube, the step portion and the socket shell enclose a first connecting groove extending along the length direction. When the socket assembly and the plug assembly are plugged in, the plug assembly is at least partially located in the first connecting groove.

4. The socket assembly according to claim 1, characterized in that: A crown spring is arranged in the conductive socket; and / or An annular sealing groove is arranged on the outer surface of the installation cylinder, and a sealing member is arranged between the sealing groove and the step portion.

5. A plug assembly, used for plugging and mating with a socket assembly, characterized in that: The plug assembly comprises: A plug barrel, the plug barrel having a cable end and a connection end opposite to the cable end along the length direction, the plug barrel having an inner cavity filled with insulating material; a high voltage cable sealingly connected to the cable end and partially extending into the inner cavity; and A conductive plug core, which is detachably sealed and mounted to the connection end and is electrically connected to the high-voltage cable; There are at least two conductive plugs, and a mating portion is provided on the outer surface of the plug tube. When the plug assembly and the socket assembly are plugged in and mated, the mating portion is used to connect to the positioning portion of the socket assembly so that the conductive plug is accurately plugged in and mated with the conductive socket of the socket assembly.

6. The plug assembly according to claim 5, characterized in that: The insulating material is insulating glue, and the inner wall of the plug barrel is provided with protrusions or grooves.

7. The plug assembly according to claim 5, characterized in that: The plug barrel is formed with a second connecting groove extending along the length direction at the connecting end. When the plug assembly and the socket assembly are plugged in and matched, the socket assembly is at least partially located in the second connecting groove.

8. The plug assembly according to claim 7, characterized in that: Along the length direction, the inner side wall of the second connecting groove exceeds the outer side wall of the second connecting groove; the inner side wall of the second connecting groove is formed with the connecting end, and the connecting end is provided with an external thread; The plug assembly further comprises: a fixing plate, the fixing plate being sealingly mounted to the connection end and being conductively connected to the high-voltage cable, the conductive insert being detachably and sealingly connected to the fixing plate; and A locking sleeve, wherein the locking sleeve is provided with an internal thread matching the connecting end, and the locking sleeve is provided with a through hole for the conductive insert to pass through.

9. The plug assembly according to claim 8, characterized in that: The size of the inner cavity at the connection end is configured to match the size of the high-voltage cable; and / or When the locking sleeve is connected to the connecting end, the outer surface of the locking sleeve is flush with the surface of the inner side wall of the second connecting groove.

10. A high voltage electrical connector, characterized in that: The high voltage electrical connector comprises: The socket assembly according to any one of claims 1 to 4, wherein the socket shell of the socket assembly has a positioning portion; and The plug assembly according to any one of claims 5 to 9, wherein the plug barrel of the plug assembly has a mating portion; When the socket shell and the plug barrel are plugged and matched, the positioning portion is connected to the matching portion so that the conductive plug core of the plug assembly is accurately plugged and matched with the conductive socket of the socket assembly.

11. The high voltage electrical connector according to claim 10, characterized in that: The outer surface of the socket shell is provided with a first annular protrusion, and the high-voltage electrical connector further comprises: A socket flange, which is sleeved outside the socket shell and is sealed with the first annular protrusion, and is used to connect to the equipment to be installed; A connecting flange, wherein the connecting flange is sleeved outside the socket shell and is formed with a mounting groove for accommodating the first annular protrusion, and the connecting flange and the socket flange are located on both sides of the first annular protrusion; and A first locking member is provided, wherein the first locking member connects the socket flange and the connecting flange to fix the socket assembly to the device to be installed.

12. The high voltage electrical connector according to claim 11, characterized in that: The plug assembly is further provided at the cable end with: A wire positioning plate, which is sleeved outside the high-voltage cable and is threadedly connected to the plug barrel; A grounding sleeve, the grounding sleeve having a first connecting portion and a second connecting portion, the first connecting portion being sleeved outside the high-voltage cable and conductively connected to the high-voltage cable, and the second connecting portion extending in a radial direction of the high-voltage cable; A compression sleeve, wherein along the length direction, one end of the compression sleeve is pressed against the second connection portion, and the other end of the compression sleeve is wrapped outside the high-voltage cable, so that the first connection portion of the grounding sleeve is pressed against the high-voltage cable; as well as A locking cap is sleeved outside the compression sleeve and plug-connected with the plug barrel so that the second connecting portion of the grounding sleeve is pressed tightly between the plug barrel and the compression sleeve.

13. The high voltage electrical connector according to claim 12, characterized in that: The outer surface of the plug barrel is provided with a second annular protrusion, and the locking cap abuts against the second annular protrusion when the plug barrel is plugged and connected, and the socket shell abuts against the second annular protrusion when the socket shell and the plug barrel are plugged and matched; The high voltage electrical connector also includes: A locking flange, which is sleeved outside the socket shell and the plug barrel and is threadedly connected to the locking cap; as well as A second locking member is provided, wherein the second locking member connects the locking flange and the connecting flange to fix the plug assembly to the socket assembly.

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