Electric connector

Abstract

The utility model relates to an electric connector. The electric connector comprises a first connecting structure and a second connecting structure which are axially connected in an inserted mode. The first connecting structure is provided with a first shell, a mounting groove and an opening are formed in the periphery of the first shell, and the opening is used for communicating the mounting groove with the outside in the axial direction; the second connecting structure comprises a second shell, a clamping sleeve and a pressing piece, and the second shell is connected with the first shell in an inserted mode. The clamping sleeve is provided with a locking block, the clamping sleeve abuts against the side, away from the first shell, of the second shell, and the clamping sleeve is rotationally arranged on the second shell in a sleeving mode so that the clamping sleeve can rotate till the locking block is aligned with the opening in the circumferential direction of the second shell or rotate till the locking block is located in the mounting groove and abuts against the groove wall of the mounting groove; the pressing piece is arranged on the second shell in a sleeving mode and abuts against the side, away from the first shell, of the clamping sleeve so as to be matched with the second shell to axially clamp the clamping sleeve. After the locking block enters the mounting groove, the groove wall of the mounting groove can abut against the locking block so as to limit the axial position of the clamping sleeve. And compared with threaded fastening, the assembly is faster, and the condition of screw loosening is not prone to occurring.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connectors, and in particular to an electrical connector. Background Art

[0002] An electrical connector is a connecting device that electrically connects two devices. An electrical connector in conventional technology usually includes a male plug and a female socket that are inserted into each other.

[0003] After the current plug and socket are plugged in, they are usually further fastened by threads. However, the thread fastening method requires continuous twisting of the related thread structure, which takes a long time to assemble and is prone to thread slippage. Utility Model Content

[0004] Based on this, it is necessary to provide an electrical connector to address the problem of slipping of the threads when the plug and the socket are fastened together.

[0005] An electrical connector, comprising a first connection structure and a second connection structure that are axially plugged;

[0006] The first connection structure is provided with a first shell, and the outer periphery of the first shell is provided with a mounting groove and an opening, and the opening is used to connect the mounting groove with the outside along the axial direction;

[0007] The second connection structure comprises:

[0008] a second shell, the second shell being plugged into the first shell;

[0009] A ferrule, wherein the ferrule is provided with a locking block, the ferrule abuts against a side of the second shell facing away from the first shell, and the ferrule is rotatably sleeved on the second shell, so as to be rotated to a position where the locking block is aligned with the opening in the circumferential direction of the second shell, or to a position where the locking block is located in the installation slot and abuts against a slot wall of the installation slot;

[0010] A pressing piece is sleeved on the second shell and abuts against a side of the ferrule away from the first shell to cooperate with the second shell to axially clamp the ferrule.

[0011] In one of the embodiments, a fitting ring is protruded from the inner periphery of the ferrule, and the pressing member passes through the ferrule and abuts against a side of the fitting ring facing away from the first shell.

[0012] In one embodiment, the pressing member is threadably matched with the second shell.

[0013] In one embodiment, a limiting ring is protruded from the outer periphery of the second shell, and the limiting ring abuts against a side of the matching ring facing the first shell.

[0014] In one embodiment, the locking block is located on a side close to the first shell relative to the matching ring, and the limiting ring is provided with a avoidance opening corresponding to the position of the locking block; in the circumferential direction of the second shell, the avoidance opening and the opening are at the same position.

[0015] In one of the embodiments, a bottom wall of the installation groove at one end away from the opening forms a limiting groove; the ferrule can be rotated relative to the second housing to a position where the locking block is located in the limiting groove.

[0016] In one embodiment, a side wall of the installation groove away from the opening is a positioning wall, and a bottom wall at one end of the installation groove where the positioning wall is located is protruding with an abutment block, and the abutment block and the positioning wall are spaced apart to form the limiting groove.

[0017] In one embodiment, a side of the abutment block close to the opening is inclined toward a direction away from the opening to guide the locking block into the limiting groove; and / or a side of the abutment block close to the positioning wall is inclined toward a direction away from the positioning wall to guide the locking block out of the limiting groove.

[0018] In one embodiment, the first shell is provided with at least two installation grooves and at least two openings, and the number and positions of the openings correspond to the number and positions of the installation grooves; the ferrule is provided with at least two locking blocks, and the distribution positions of at least two locking blocks correspond to the distribution positions of the openings.

[0019] In one embodiment, the first shell is hollow to form an inner cavity, the first connecting structure also includes a pin inserted into the inner cavity, and the cavity wall of the inner cavity is provided with a first positioning portion; the second shell includes an insulator, the insulator has a plug hole, and the insulator is provided with a second positioning portion. In the circumferential direction of the electrical connector, the first positioning portion is aligned with the second positioning portion to allow the first connecting structure and the second connecting structure to be positioned and plugged together.

[0020] In the above-mentioned electrical connector, by rotating the ferrule to a position where the locking block is aligned with the opening, the locking block can enter the installation groove or come out of the installation groove. After the locking block enters the installation groove, the locking block is rotated to the inside of the installation groove, and the groove wall of the installation groove can axially abut the locking block, so as to limit the axial position of the second shell by limiting the axial position of the ferrule, so that the first shell and the second shell remain plugged. Compared with the use of threaded fastening, the present application is configured so that after the locking block enters the installation groove, it only needs to rotate the ferrule to a position where the locking block is misaligned with the opening to achieve fastening, which is faster to assemble and less likely to cause slipping.

[0021] In addition, the second connecting structure is also provided with a clamping piece, which is arranged on the first shell and abuts against the side of the ferrule away from the first shell, so that the clamping piece can cooperate with the second shell to clamp the ferrule, so that the ferrule can be rotatable on the second shell but the axial position is limited, thereby improving the position stability of the ferrule and facilitating the connection between the first connecting structure and the second connecting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic axial view of an electrical connector provided in one embodiment of the present application.

[0023] Figure 2 for Figure 1 The electrical connector is shown in a cross-sectional view along line AA.

[0024] Figure 3 for Figure 1 The electrical connector is shown in a cross-sectional view along line BB.

[0025] Figure 4 for Figure 1 An exploded schematic diagram of the ferrule and the first shell in the electrical connector is shown.

[0026] Figure 5 for Figure 1 An exploded schematic diagram of the male and female ends of the electrical connector is shown.

[0027] Figure 6 for Figure 5 A schematic diagram of the axial side of the female end of the electrical connector shown.

[0028] Figure numerals: 10, electrical connector; 100, first connection structure; 110, first shell; 110a, main body; 110b, abutment plate; 111, mounting groove; 112, opening; 113, limiting groove; 114, positioning wall; 115, abutment block; 120, inner cavity; 121, first positioning portion; 130, mounting piece; 140, gasket; 150, pin; 200, second connection structure; 210, second shell; 211, limiting ring; 211a, avoidance port; 212, insulator; 212a, second positioning portion; 213, jack; 220, ferrule; 221, locking block; 222, mating ring; 230, clamping piece. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] See also Figures 1 to 3 The electrical connector 10 provided in one embodiment of the present application includes a first connection structure 100 and a second connection structure 200, and the first connection structure 100 and the second connection structure 200 are axially plugged. Among them, the first connection structure 100 is provided with a first shell 110, and the outer periphery of the first shell 110 is provided with a mounting groove 111 and an opening 112. The opening 112 is used to connect the mounting groove 111 with the outside in the axial direction, that is, the external structure relative to the first connection structure 100 can enter the mounting groove 111 in the axial direction from the opening 112. The second connection structure 200 includes a second shell 210, a ferrule 220 and a pressing member 230, and the second shell 210 is plugged with the first shell 110. The ferrule 220 includes a locking block 221, and the ferrule 220 abuts against the side of the second shell 210 away from the first shell 110, and the ferrule 220 can be rotatably sleeved on the second shell 210, so as to rotate to a position where the locking block 221 is aligned with the opening 112 in the circumferential direction of the second shell 210. Alternatively, the ferrule 220 can be rotated relative to the second housing 210 until the locking block 221 is located in the mounting groove 111 and abuts against the groove wall of the mounting groove 111. The pressing member 230 is sleeved on the second housing 210 and abuts against the side of the ferrule 220 away from the first housing 110 to cooperate with the second housing 210 to axially clamp the ferrule 220. The axial direction is the plug-in method of the first connecting structure 100 and the second connecting structure 200.

[0036] In the above-mentioned electrical connector 10, by rotating the ferrule 220 to the position where the locking block 221 is aligned with the opening 112, the locking block 221 can enter the mounting groove 111 or escape from the mounting groove 111. After the locking block 221 enters the mounting groove 111, the locking block 221 is rotated to the inside of the mounting groove 111, and the groove wall of the mounting groove 111 can axially abut the locking block 221, so as to limit the axial position of the second housing 210 by limiting the axial position of the ferrule 220, so that the first housing 110 and the second housing 210 remain plugged. Compared with the use of threaded fastening, the present application is configured so that after the locking block 221 enters the mounting groove 111, it only needs to rotate the ferrule 220 to the position where the locking block 221 is misaligned with the opening 112 to achieve fastening, which is faster to assemble and less likely to cause slipping.

[0037] In addition, the second connecting structure 200 is also provided with a clamping piece 230, which is arranged on the first shell 110 and abuts against the side of the ferrule 220 away from the first shell 110, so that the clamping piece 230 can cooperate with the second shell 210 to clamp the ferrule 220, so that the ferrule 220 can be rotatable on the second shell 210 but the axial position is limited, thereby improving the position stability of the ferrule 220 and facilitating the connection between the first connecting structure 100 and the second connecting structure 200.

[0038] It is understandable that in the conventional technology, the threaded structure (hereinafter referred to as the screw connection) of the second connection structure 200 is usually separated from the second housing 210, that is, when the second connection structure 200 is not plugged into the first connection structure 100, the screw connection is separated from the second housing 210. When the electrical connector 10 is plugged in and fastened, the screw connection needs to be reinstalled on the second housing 210, so the assembly is inconvenient. In the present application, the clamping member 230 is matched with the second housing 210 to clamp and fix the ferrule 220 on the second housing 210, thereby improving the position stability of the ferrule 220. When the first connection structure 100 is connected to the second connection structure 200, the ferrule 220 can be conveniently matched with the second housing 210 to form a self-locking fastening.

[0039] In the following embodiments, for ease of understanding and description, when the locking block 221 is aligned with the opening 112, the position of the ferrule 220 relative to the second housing 210 is recorded as the unlocking position; when the locking block 221 is misaligned with the opening 112 and the locking block 221 is in the mounting groove 111, the position of the ferrule 220 relative to the second housing 210 is recorded as the locking position. That is, the ferrule 220 can be rotatably sleeved on the second housing 210 to move between the locking position and the unlocking position.

[0040] See also Figure 3 and Figure 4 In one embodiment, a fitting ring 222 is protruded from the inner periphery of the ferrule 220, and the pressing member 230 passes through the ferrule 220 and abuts against the side of the fitting ring 222 that is away from the first housing 110. Thus, the pressing member 230 can conveniently limit the axial position of the ferrule 220 by pressing the fitting ring 222 onto the second housing 210. Moreover, the pressing member 230 can be passed through the ferrule 220, so that the ferrule 220 is the outermost part of the second connection structure 200, which is convenient for driving the ferrule 220 to rotate.

[0041] Please continue reading Figure 3 In one embodiment, the pressing member 230 can be detachably mounted on the second housing 210 to facilitate the installation of the ferrule 220. That is, during installation, the ferrule 220 can be firstly mounted on the second housing 210, and then the pressing member 230 can be mounted on the second housing 210, so that the pressing member 230 can cooperate with the second housing 210 to clamp the matching ring 222.

[0042] Furthermore, the clamping member 230 can be threadedly matched with the second housing 210, that is, the two are connected detachably by thread. It is understandable that since the threaded match is only used for the installation of the clamping member 230 and the axial positioning of the ferrule 220, rather than the structure that mainly bears the locking force, the threaded match will not easily cause the teeth to slip. In addition, the process of installing the clamping member 230 in the second housing 210 has nothing to do with the first connection structure 100, that is, the clamping member 230 and the ferrule 220 can be pre-installed in the second housing 210, and the use of threaded match will not affect the connection and assembly time of the first connection structure 100 and the second connection structure 200.

[0043] See also Figure 3 In one embodiment, a stop ring 211 is protruded from the outer periphery of the second housing 210, and the stop ring 211 abuts against the side of the matching ring 222 facing the first housing 110. That is, the pressing member 230 and the stop ring 211 can abut against the matching ring 222 from the opposite sides of the matching ring 222 to clamp the matching ring 222. Thus, the axial position of the ferrule 220 can be limited by limiting the axial position of the matching ring 222.

[0044] Please refer again Figure 3 and Figure 4 In one embodiment, the locking block 221 is located at a side close to the first housing 110 relative to the matching ring 222, and the limiting ring 211 is provided with a position-avoiding opening 211a corresponding to the position of the locking block 221. In this way, when the ferrule 220 is installed on the second housing 210, the locking block 221 can pass over the limiting ring 211 through the position-avoiding opening 211a and move to the side of the limiting ring 211 close to the first housing 110, so as to be matched with the first housing 110.

[0045] In the circumferential direction of the second housing 210 , the avoidance opening 211 a and the opening 112 are at the same position. Thus, the avoidance opening 211 a can be used to position the ferrule 220 so that the locking block 221 can be at a position aligned with the opening 112 .

[0046] Please refer again Figure 2 In one embodiment, a limiting groove 113 is formed on the bottom wall of the installation groove 111 at one end away from the opening 112. The ferrule 220 can rotate relative to the second housing 210 until the locking block 221 is located in the limiting groove 113, that is, when the ferrule 220 is in the locked position, the locking block 221 is located in the limiting groove 113. In this way, the position stability of the ferrule 220 in the locked position can be improved by the groove wall of the limiting groove 113 abutting against the locking block 221.

[0047] Furthermore, when the ferrule 220 is in the locked position, the locking block 221 abuts against at least one side wall of the limiting groove 113 along the circumferential direction of the first shell 110 .

[0048] One side wall of the installation groove 111 away from the opening 112 is a positioning wall 114, and a bottom wall of one end of the installation groove 111 where the positioning wall 114 is located is protruded with an abutment block 115, and the abutment block 115 and the positioning wall 114 are spaced apart to form a limiting groove 113. Therefore, the abutment block 115 abuts against the locking block 221 in the locked position, which can prevent the locking block 221 from sliding along the installation groove 111, thereby reducing the probability that the locking block 221 slides along the installation groove 111 to a position aligned with the opening 112 and then escapes from the opening 112.

[0049] See also Figure 2 In one embodiment, the side of the abutment block 115 close to the opening 112 is inclined in a direction away from the opening 112 to guide the locking block 221 into the limiting groove 113. That is, when the locking block 221 rotates from the end where the opening 112 is located to reach the abutment block 115, the locking block 221 can be lifted along the inclined side of the abutment block 115 and enter the limiting groove 113. This arrangement makes it easy to insert into the limiting groove 113.

[0050] Please continue reading Figure 2 In one embodiment, the side of the abutment block 115 close to the positioning wall 114 is inclined in a direction away from the positioning wall 114 to guide the locking block 221 to escape from the limiting groove 113. Similar to the above, when the locking block 221 in the limiting groove 113 needs to escape from the limiting groove 113, it can move along the inclined surface of the abutment block 115 close to the positioning wall 114 to be gradually lifted up and escape from the limiting groove 113.

[0051] Please continue reading Figure 2 In one embodiment, the first housing 110 is provided with at least two mounting grooves 111 and at least two openings 112, and the number and position of the openings 112 correspond to the number and position of the mounting grooves 111. The ferrule 220 is provided with at least two locking blocks 221, and the distribution positions of the at least two locking blocks 221 correspond to the distribution positions of the openings 112. Thus, by limiting the cooperation between each locking block 221 and the corresponding mounting groove 111, the stability of the clamping of the ferrule 220 and the first housing 110 can be improved.

[0052] Taking the case where there are two locking blocks 221 as an example, when the ferrule 220 is in the unlocked position, the positions of the two locking blocks 221 correspond to the positions of the two openings 112 respectively, so as to enter the installation grooves 111 described by the two openings 112 respectively.

[0053] Furthermore, a limiting groove 113 is provided at one end of the two installation grooves 111 away from the opening 112 to further improve the stability of the clamping connection between the clamping sleeve 220 and the first shell 110 .

[0054] See also Figure 5 , Figure 6 Combined with Figure 2 In one embodiment, the first shell 110 is hollow to form an inner cavity 120, and the first connection structure 100 also includes a pin 150 inserted into the inner cavity 120, and the cavity wall of the inner cavity 120 is provided with a first positioning portion 121. The second shell 210 includes an insulator 212, and the insulator 212 is provided with a plug hole 213, and the insulator 212 is provided with a second positioning portion 212a. In the circumferential direction of the electrical connector 10, the first positioning portion 121 and the second positioning portion 212a are aligned to allow the pin 150 to be positioned and plugged into the plug hole 213. It can be understood that the positioning and matching of the first positioning portion 121 and the second positioning portion 212a can improve the accuracy of the plugging of the first connection structure 100 and the second connection structure 200. At the same time, it can also play a fool-proof role.

[0055] In one embodiment, a connector is provided in the jack 213, and the connector is used to be plugged with the pin 150 for electrical conduction. The pin 150 and the connector provided in the jack 213 can be made of brass, which has good coloring, ductility, corrosion resistance, conductivity, antibacterial properties and the like.

[0056] In one embodiment, one of the first positioning portion 121 and the second positioning portion 212a may be a convex key, and the other may be a concave groove. The first connection structure 100 and the second connection structure 200 can be positioned by plugging the convex key into the concave groove.

[0057] For example, the first positioning portion 121 may be a convex key, and the second positioning portion 212a may be a groove having a shape and size matching that of the convex key.

[0058] The number of the first positioning portions 121 may be multiple, for example, 2, 3, 4 or 5. The multiple first positioning portions 121 may be evenly spaced along the circumference of the first housing 110. The number of the second positioning portions 212a may be the same as the number of the first positioning portions 121, and the setting position of the second positioning portion 212a is adapted to the position of the first positioning portion 121, so as to be adapted and plugged with each other.

[0059] Please refer again Figure 2 In one embodiment, the outer surface of the ferrule 220 may be provided with a plurality of raised or recessed stripes to facilitate the rotation of the ferrule 220 .

[0060] Please refer again Figure 3 In one embodiment, the first connection structure 100 further includes a mounting member 130, and the mounting member 130 is used to connect with an external device. In other words, the first connection structure 100 can be connected with an external device through the mounting member 130 to be installed on the device.

[0061] The mounting member 130 is detachably connected to the second housing 210 to facilitate removal of the second housing 210 from an external device.

[0062] Please continue reading Figure 3 In one embodiment, the first connection structure 100 further includes an elastic gasket 140. The first shell 110 includes a main body 110a and an abutment plate 110b connected to the outer periphery of the main body 110a. The outer periphery of the main body 110a is also provided with an external thread structure. The mounting member 130 is sleeved on the main body 110a and threadedly matched with the main body 110a. The elastic gasket 140 is sleeved on the main body 110a and is located between the mounting member 130 and the abutment plate 110b to elastically push the mounting member 130 away from the abutment plate 110b. In this way, the elastic force provided by the abutment plate 110b can provide a pre-tightening force between the mounting member 130 and the main body 110a, so as to improve the stability of the connection between the mounting member 130 and the main body 110a. The mounting member 130 can be a hexagonal nut.

[0063] The elastic gasket 140 may be made of a material such as silicone rubber that has the characteristics of heat resistance, cold resistance, aging resistance, fatigue resistance, etc. Alternatively, the elastic gasket 140 may also be made of a metal material with good elasticity.

[0064] The first shell, the ferrule, the compression sleeve and the second shell can be made of PA66 material, which has good electrical properties and good insulation properties, as well as good fatigue resistance, corrosion resistance, wear resistance and the like.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An electrical connector, characterized in that: The electrical connector comprises a first connection structure and a second connection structure which are axially plugged; The first connection structure is provided with a first shell, and the outer periphery of the first shell is provided with a mounting groove and an opening, and the opening is used to connect the mounting groove with the outside along the axial direction; The second connection structure comprises: a second shell, the second shell being plugged into the first shell; A ferrule, wherein the ferrule is provided with a locking block, the ferrule abuts against a side of the second shell facing away from the first shell, and the ferrule is rotatably sleeved on the second shell, so as to be rotated to a position where the locking block is aligned with the opening in the circumferential direction of the second shell, or to a position where the locking block is located in the installation slot and abuts against a slot wall of the installation slot; A pressing piece is sleeved on the second shell and abuts against a side of the ferrule away from the first shell to cooperate with the second shell to axially clamp the ferrule.

2. The electrical connector according to claim 1, characterized in that: A matching ring is protruded from the inner periphery of the ferrule, and the pressing member passes through the ferrule and abuts against a side of the matching ring that is away from the first shell.

3. The electrical connector according to claim 2, characterized in that: The pressing member is threadably matched with the second shell body.

4. The electrical connector according to claim 2, characterized in that: A limiting ring is protruded from the outer periphery of the second shell, and the limiting ring abuts against a side of the matching ring facing the first shell.

5. The electrical connector according to claim 4, characterized in that: The locking block is located at a side close to the first shell relative to the matching ring, and the limiting ring is provided with a avoiding opening corresponding to the position of the locking block; in the circumferential direction of the second shell, the avoiding opening and the opening are at the same position.

6. The electrical connector according to claim 1, characterized in that: A limiting groove is formed on the bottom wall of the installation groove at one end away from the opening; the clamping sleeve can be rotated relative to the second housing until the locking block is located in the limiting groove.

7. The electrical connector according to claim 6, characterized in that: A side wall of the installation groove away from the opening is a positioning wall, and a bottom wall at one end of the installation groove where the positioning wall is located is protruded with an abutment block, and the abutment block is spaced from the positioning wall to form the limiting groove.

8. The electrical connector according to claim 7, characterized in that: The side of the abutment block close to the opening is inclined toward the direction away from the opening to guide the locking block into the limiting groove; and / or the side of the abutment block close to the positioning wall is inclined toward the direction away from the positioning wall to guide the locking block out of the limiting groove.

9. The electrical connector according to any one of claims 6 to 8, characterized in that: The first shell is provided with at least two installation grooves and at least two openings, and the number and positions of the openings correspond to the number and positions of the installation grooves; the ferrule is provided with at least two locking blocks, and the distribution positions of at least two locking blocks correspond to the distribution positions of the openings.

10. The electrical connector according to claim 1, characterized in that: The first shell is hollow to form an inner cavity, the first connecting structure also includes a pin inserted into the inner cavity, and the cavity wall of the inner cavity is provided with a first positioning portion; the second shell includes an insulator, the insulator has a plug hole, and the insulator is provided with a second positioning portion. In the circumferential direction of the electrical connector, the first positioning portion is aligned with the second positioning portion to allow the first connecting structure and the second connecting structure to be positioned and plugged.

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