A terminal self-protection type electrical connector

Abstract

The present invention is applicable to the technical field of electrical connectors, and provides a terminal self-protection type electrical connector, including a connecting column 1 and a connecting column 2, the ends of the connecting column 2 and the connecting column 1 being close to each other are respectively fixed with terminals and terminal sleeve rods, and also includes: a wiring assembly, the wiring assembly is used to clamp and fix the wire conductor of the connecting wire; an end cap, the ends of the connecting column 2 and the connecting column 1 being far away are both installed with end caps, the end caps are used for threading and positioning the connecting wire, and a connecting fixing assembly is also installed on the end caps, the connecting fixing assembly is used to fix the end caps with the connecting column 2 and the connecting column 1, and is also used to abut and fix the connecting wire; a connecting inner cylinder and a connecting outer cylinder, the connecting outer cylinder can also be threadedly connected with the connecting inner cylinder, and the connection between the terminal and the terminal sleeve rod is controlled. The present invention realizes the self-protection, reliability and convenient installation of the terminal connection, and ensures the safety and stability of the electrical connection.

Description

Technical Field

[0001] The invention belongs to the technical field of electric connectors, and in particular relates to a terminal self-protection type electric connector. Background Art

[0002] An electrical connector is a device used to achieve electrical connection between two or more circuits. They are widely used in many fields such as electronic equipment, automobiles, computers, communication systems, etc. The designs of electrical connectors are varied to adapt to different usage environments and needs.

[0003] The basic functions of electrical connectors are: 1) Signal transmission: used to transmit electrical signals, including data signals and power. 2) Connection and disconnection: allows connections between circuit boards or components to be easily connected and disconnected. 3) Protection function: some electrical connectors are designed with waterproof and dustproof functions to maintain good working conditions in harsh environments.

[0004] The existing electrical connectors cannot perform self-protection of the terminal connection during use, and the wiring installation and connection are not convenient and reliable. Therefore, in view of the above situation, it is urgent to develop a terminal self-protection type electrical connector to overcome the shortcomings in current practical applications. Summary of the invention

[0005] The object of the present invention is to provide a terminal self-protection type electrical connector, aiming to solve the problems mentioned in the above background technology.

[0006] The present invention is implemented as follows: a terminal self-protection type electrical connector, comprising a connecting column 1 and a connecting column 2, wherein the ends of the connecting column 2 and the connecting column 1 that are far away are both provided with cavities, and the ends of the connecting column 2 and the connecting column 1 that are close to each other are respectively fixed with terminals and terminal sleeve rods, and the terminals and the terminal sleeve rods can be correspondingly matched and connected, and also includes:

[0007] A wiring assembly, wherein the cavities of the second connecting column and the first connecting column are both fixed with wiring assemblies, the wiring assembly in the second connecting column is electrically connected to the corresponding terminal, the wiring assembly in the first connecting column is electrically connected to the corresponding terminal sleeve rod, and the wiring assembly is used to clamp and fix the wire conductor of the connecting wire;

[0008] End caps, the ends of the connecting column 2 and the connecting column 1 that are away from each other are both equipped with end caps, the end caps are used for threading and positioning of the connecting wires, and the end caps are also equipped with connecting and fixing components, the connecting and fixing components are used to fix the end caps with the connecting column 2 and the connecting column 1, and are also used to abut and fix the connecting wires;

[0009] The connecting inner cylinder and the connecting outer cylinder are provided. The outer side of the connecting cylinder 2 is fixed with the connecting inner cylinder, and the outer side of the connecting cylinder 1 is rotatably installed with the connecting outer cylinder. The connecting outer cylinder can also be threadedly connected with the connecting inner cylinder and controls the connection between the terminal and the terminal sleeve rod.

[0010] A further technical solution is that an external thread is provided on the outer side of the connecting inner tube, the cross-section of the connecting outer tube is L-shaped, one branch end of the connecting outer tube is rotatably connected to the connecting column, and the other branch of the connecting outer tube is provided on the inner side with an internal thread that can be threadedly connected to the external thread of the connecting inner tube.

[0011] According to a further technical solution, a plurality of guide edges are fixedly and circumferentially distributed on the inner wall of the connecting inner tube, and a plurality of guide grooves slidably connected to the guide edges are arranged circumferentially on the outer side of the connecting column.

[0012] A further technical solution is that an elastic telescopic ball member is installed at one end of the connecting column one close to the connecting column two; a positioning groove one and a positioning groove two are respectively provided on the inner wall of the connecting inner tube for the ball of the elastic telescopic ball member to abut against each other; when the ball of the elastic telescopic ball member abuts against the positioning groove two, the terminal sleeve rod and the terminal are in a separated state; when the ball of the elastic telescopic ball member abuts against the positioning groove one, the terminal sleeve rod and the terminal are in a mating connection state.

[0013] A further technical solution is that the wiring assembly includes a wiring barrel fixed at the inner end of the cavity, the wiring barrel in the connecting column two is electrically connected to the corresponding terminal, the wiring barrel in the connecting column one is electrically connected to the corresponding terminal sleeve, and a plurality of elastic clamping rods are circumferentially installed and fixed on the inner side of the wiring barrel, the elastic clamping rod includes an inclined portion inclined toward the inner end of the wiring barrel, the end of the inclined portion is connected to an arc portion, and the elastic clamping rod is made of elastic conductive material.

[0014] According to a further technical solution, a wire hole for the connecting wire to pass through is provided in the middle of the end cover, and a limiting ring for positioning and blocking the connecting wire is provided at the inner end of the wire hole.

[0015] A further technical solution is provided, wherein the connecting and fixing assembly comprises a fixing bolt, a spring, a clamping block, a transmission rod, a wedge block and a push plate, wherein the outer side of the end cover is circumferentially provided with a plurality of fixing cavities 1, and the inner side of the end cover is circumferentially provided with a plurality of fixing cavities 2 corresponding to the fixing cavity 1. The fixing cavity 1 passes through a fixing bolt which is threadedly connected to the screw holes of the connecting column 2 and the end of the connecting column, and the fixing bolt is also slidably and rotatably connected to the end cover. A transmission rod is slidably provided in the end cover between the fixing cavity 1 and the fixing cavity 2, and wedge blocks and clamping blocks are respectively fixed at both ends of the transmission rod, the clamping block is slidably provided in the fixing cavity 2, and the clamping block is used to abut and fix the connecting line, the wedge block is slidably provided in the fixing cavity 1, and a spring is also fixed on one side of the transmission rod in the fixing cavity 1, and the other end of the spring is fixedly connected to the wedge block; a push plate is also rotatably installed on the fixing bolt, the push plate is located in the fixing cavity 1, and one end of the push plate slidably abuts against the surface of the wedge block.

[0016] According to a further technical solution, one end face of the wedge block away from the transmission rod is inclined toward the direction away from the transmission rod, close to the connecting column two and the connecting column one; when there is no external force, the spring is used to make the clamping block completely accommodated in the fixing cavity two.

[0017] According to a further technical solution, when the fixing bolt is connected to the screw holes at the ends of the second connecting column and the first connecting column, the push plate pushes the wedge block to move, so that the clamping block is abutted and fixed to the surface of the connecting line under the transmission of the transmission rod.

[0018] The present invention provides a terminal self-protection type electrical connector, which has the following beneficial effects:

[0019] By arranging the connecting inner cylinder and the connecting outer cylinder, the connecting outer cylinder can be threadedly connected to the connecting inner cylinder, which makes it easy to control and adjust the distance between the connecting column two and the connecting column one, thereby controlling the connection between the terminal and the terminal sleeve rod, so that the terminal and the terminal sleeve rod are connected and disconnected in a closed space, thereby achieving the purpose of self-protection.

[0020] By setting the cavity, an accommodating space can be provided for the wire conductor. At the same time, the wiring assembly arranged therein serves as a connecting bridge, which is convenient for clamping and fixing the wire conductor and for electrically connecting the wire conductor to the terminal and the terminal sleeve, and has high reliability.

[0021] The limitation of the end cap facilitates the connection between the wire conductor and the wiring assembly. At the same time, the end cap is used for the insertion and positioning of the connecting wire. The connecting and fixing assembly can fix the end cap to the connecting column two and the connecting column one, and is also used to abut and fix the connecting wire, ensuring the stability and reliability of the end cap and the connecting wire and convenient installation.

[0022] In summary, the terminal self-protection type electrical connector realizes self-protection, reliability and convenient installation of terminal connection, and ensures the safety and stability of electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a terminal self-protection type electrical connector provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a terminal self-protection type electrical connector provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0026] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part B;

[0027] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of the middle C part;

[0028] Figure 6 for Figure 2 Schematic diagram of the main structure;

[0029] Figure 7 for Figure 6 A schematic diagram of a structure in which the outer connecting cylinder and the inner connecting cylinder are completely separated;

[0030] Figure 8 for Figure 6 Schematic diagram of the structure of the terminal sleeve rod and terminal connection.

[0031] In the figure: 1-connecting wire, 2-fixing bolt, 3-end cover, 4-connecting column one, 5-connecting outer cylinder, 6-connecting inner cylinder, 7-connecting column two, 8-terminal sleeve rod, 9-terminal, 10-cavity, 11-wiring barrel, 12-wire conductor, 13-guide edge, 14-fixing cavity one, 15-spring, 16-fixing cavity two, 17-clamping block, 18-limiting ring, 19-transmission rod, 20-wedge block, 21-push plate, 22-elastic clamping rod, 23-positioning groove one, 24-positioning groove two, 25-elastic telescopic ball member. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] like Figure 1-Figure 5 As shown, a terminal self-protection type electrical connector provided by an embodiment of the present invention includes a connecting column 1 4 and a connecting column 2 7, wherein the ends of the connecting column 2 7 and the connecting column 1 4 that are far away are both provided with a cavity 10, and the ends of the connecting column 2 7 and the connecting column 1 4 that are close to each other are respectively fixed with a terminal 9 and a terminal sleeve rod 8, and the terminal 9 and the terminal sleeve rod 8 can be correspondingly matched and connected, and further includes:

[0035] Wiring assembly, the cavities 10 of the connecting column 2 7 and the connecting column 1 4 are both fixed with wiring assemblies, the wiring assembly in the connecting column 2 7 is electrically connected to the terminal 9 correspondingly, the wiring assembly in the connecting column 1 4 is electrically connected to the terminal sleeve rod 8 correspondingly, and the wiring assembly is used to clamp and fix the wire conductor 12 of the connecting wire 1;

[0036] End cap 3, the ends of the connecting column 2 7 and the connecting column 1 4 away from each other are both equipped with end cap 3, the end cap 3 is used for passing and positioning the connecting line 1, and a connecting and fixing assembly is also installed on the end cap 3, the connecting and fixing assembly is used to fix the end cap 3 with the connecting column 2 7 and the connecting column 1 4, and is also used to abut and fix the connecting line 1;

[0037] The connecting inner cylinder 6 and the connecting outer cylinder 5, the connecting inner cylinder 6 is fixed on the outer side of the connecting column 2 7, the connecting outer cylinder 5 is rotatably installed on the outer side of the connecting column 1 4, the connecting outer cylinder 5 can also be threadedly connected with the connecting inner cylinder 6, and the connection between the terminal 9 and the terminal sleeve 8 is controlled.

[0038] In the embodiment of the present invention, by arranging the connecting inner cylinder 6 and the connecting outer cylinder 5, the connecting outer cylinder 5 can be threadedly connected to the connecting inner cylinder 6, so as to facilitate controlling and adjusting the distance between the connecting column 2 7 and the connecting column 1 4, thereby controlling the connection between the terminal 9 and the terminal sleeve rod 8, so that the terminal 9 and the terminal sleeve rod 8 are connected and disconnected in a closed space, thereby achieving the purpose of self-protection.

[0039] By setting the cavity 10, an accommodating space can be provided for the wire conductor 12. At the same time, the wiring assembly arranged therein serves as a connecting bridge, which is convenient for clamping and fixing the wire conductor 12 and for electrically connecting the wire conductor 12 with the terminal 9 and the terminal sleeve 8, and has high reliability.

[0040] The limitation of the end cover 3 facilitates the connection between the wire conductor 12 and the wiring assembly. At the same time, the end cover 3 is used for the insertion and positioning of the connecting wire 1. The connecting and fixing assembly can fix the end cover 3 with the connecting column 2 7 and the connecting column 1 4, and is also used to abut and fix the connecting wire 1, thereby ensuring the stability and reliability of the end cover 3 and the connecting wire 1 and convenient installation.

[0041] In summary, the terminal self-protection type electrical connector realizes the self-protection, reliability and convenient installation of the terminal 8 connection, and ensures the safety and stability of the electrical connection.

[0042] like Figure 1-Figure 2 , Figure 5-Figure 8 As shown, as a preferred embodiment of the present invention, the outer side of the connecting inner cylinder 6 is provided with an external thread, the cross-section of the connecting outer cylinder 5 is L-shaped, one branch end of the connecting outer cylinder 5 is rotatably connected to the connecting column 4, and the inner side of the other branch of the connecting outer cylinder 5 is provided with an internal thread that can be threadedly connected to the external thread of the connecting inner cylinder 6.

[0043] Preferably, the ends of the connecting inner cylinder 6 and the connecting outer cylinder 5 are both chamfered to facilitate the connection and installation of the two; a plurality of guide edges 13 are circumferentially distributed and fixed on the inner wall of the connecting inner cylinder 6, and a plurality of guide grooves slidably connected to the guide edges 13 are circumferentially distributed on the outer side of the connecting column 4 to prevent the connecting column 4 from rotating, so that the connecting column 4 can move reliably, thereby accurately connecting the terminal sleeve rod 8 and the terminal 9, while avoiding damage to the terminal sleeve rod 8 and the terminal 9.

[0044] In one embodiment, an elastic telescopic ball member 25 is installed at one end of the connecting column 1 4 close to the connecting column 2 7. The elastic telescopic ball member 25 is not limited, and its ball can be elastically telescopic; the inner wall of the connecting inner tube 6 is respectively provided with a positioning groove 1 23 and a positioning groove 24 for the ball of the elastic telescopic ball member 25 to abut; Figure 6 As shown, when the ball of the elastic telescopic ball member 25 abuts against the second positioning groove 24, the terminal sleeve rod 8 and the terminal 9 are in a separated state; Figure 8 As shown, when the ball of the elastic telescopic ball member 25 abuts against the positioning groove 23, the terminal sleeve rod 8 and the terminal 9 are in a mating connection state. Figure 7 This is a schematic diagram of the completely disassembled state.

[0045] Preferably, there is no limitation on the terminal sleeve rod 8 and the terminal 9, and they can be plugged in together, such as providing a slot for the terminal 9 to be plugged in at the end of the terminal sleeve rod 8, and the end of the terminal sleeve rod 8 is preferably rounded to improve the reliability of the connection. In addition, there is no limitation on the number and position of the terminal sleeve rod 8 and the terminal 9, and they can be arranged as needed.

[0046] like Figure 2 and Figure 4As shown, as a preferred embodiment of the present invention, the wiring assembly includes a wiring barrel 11 fixed to the inner end of the cavity 10, the wiring barrel 11 in the connecting column 2 7 is electrically connected to the terminal 9 correspondingly, and the wiring barrel 11 in the connecting column 1 4 is electrically connected to the terminal sleeve 8 correspondingly, and a plurality of elastic clamping rods 22 are circumferentially installed and fixed on the inner side of the wiring barrel 11, and the elastic clamping rod 22 includes an inclined portion inclined toward the inner end of the wiring barrel 11, and the end of the inclined portion is connected to an arc portion, and the elastic clamping rod 22 is made of elastic conductive material.

[0047] When in use, the wire conductor 12 of the connecting wire 1 is inserted into the terminal barrel 11. The structure of the elastic clamping rod 22 can ensure that the wire conductor 12 is electrically connected to the terminal barrel 11. At the same time, the connecting wire 1 is clamped and fixed by the connecting fixing component to prevent the wire conductor 12 from falling off, and the connection is quick and reliable.

[0048] like Figure 1-Figure 3 As shown, as a preferred embodiment of the present invention, a wire hole for the connecting wire 1 to pass through is opened in the middle of the end cover 3, and a limiting ring 18 for positioning and blocking the connecting wire 1 is provided at the inner end of the wire hole so that the connecting wire 1 can be inserted into place.

[0049] The connection and fixing assembly includes a fixing bolt 2, a spring 15, a clamping block 17, a transmission rod 19, a wedge block 20 and a push plate 21. The outer side of the end cover 3 is circumferentially distributed with a plurality of fixing cavities 14, and the inner side of the end cover 3 is circumferentially distributed with a plurality of fixing cavities 16 corresponding to the fixing cavities 14. The fixing cavities 14 are provided with a fixing bolt 2 that can be threadedly connected to the screw holes at the ends of the connecting column 2 7 and the connecting column 1 4. The fixing bolt 2 is also connected to the end cover 3 for sliding and rotation. A transmission rod 19 is slidably provided in the end cover 3 between the fixing cavities 14 and 16. The wedge block 20 and the clamping block 17 are fixed to the two ends of the transmission rod 19 respectively. The clamping block 17 slides It is arranged in the second fixing cavity 16, and the clamping block 17 is used to abut and fix the connecting line 1, the wedge block 20 is slidably arranged in the first fixing cavity 14, and the end face of the wedge block 20 away from the transmission rod 19 is close to the connecting column 2 7 and the connecting column 1 4. The side is inclined in the direction away from the transmission rod 19, and a spring 15 is also fixed on one side of the transmission rod 19 in the first fixing cavity 14, and the other end of the spring 15 is fixedly connected to the wedge block 20. When there is no external force, the spring 15 is used to make the clamping block 17 completely accommodated in the second fixing cavity 16; a push plate 21 is also rotatably installed on the fixing bolt 2, and the push plate 21 is located in the first fixing cavity 14, and one end of the push plate 21 is in sliding contact with the surface of the wedge block 20.

[0050] When the fixing bolt 2 is connected to the screw holes at the ends of the connecting column 2 7 and the connecting column 1 4, the push plate 21 pushes the wedge block 20 to move, so that the clamping block 17 is abutted and fixed to the surface of the connecting line 1 under the transmission of the transmission rod 19. The push plate 21 does not rotate during the rotation of the fixing bolt 2, which has high reliability. As the fixing bolt 2 is threadedly connected to the screw holes of the connecting column 2 7 and the connecting column 1 4, the fixing bolt 2 moves relative to the end cover 3, so that the push plate 21 pushes the wedge block 20 to move, thereby ensuring that the clamping block 17 is abutted and fixed to the connecting line 1, and the clamping block 17 can be reset by the spring 15. In addition, the push plate 21 can also ensure that the fixing bolt 2 will not fall off the end cover 3, further improving its reliability.

[0051] It should be noted that when there are differences in the thickness of the connecting wire 1 , an insulating tape may be wrapped around the connecting wire 1 to supplement the thickness, etc., so as to meet the use requirements, which will not be elaborated herein.

[0052] The above embodiment of the present invention provides a terminal self-protection type electrical connector, and the working principle is as follows:

[0053] By rotating the connecting outer cylinder 5, it is threadedly connected or disconnected with the connecting inner cylinder 6, so as to adjust the distance between the connecting column 1 4 and the connecting column 2 7. This process directly controls the contact and separation of the terminal 9 and the terminal sleeve rod 8, ensuring that the two can complete the connection or disconnection operation in a closed space, achieving the effect of self-protection.

[0054] The wire conductor 12 is inserted into the wire barrel 11 in the respective cavities 10 of the connecting column 1 4 and the connecting column 2 7, and is tightly wrapped by the elastic clamping rod 22 inside the wire barrel 11 to achieve electrical connection. The design of the elastic clamping rod 22 not only ensures the stable connection of the wire conductor 12, but also improves the reliability of the connection.

[0055] The end cap 3 is threadedly connected to the ends of the connecting column 1 4 and the connecting column 2 7 through the fixing bolt 2. The rotation of the fixing bolt 2 is realized through the mechanical structure composed of the push plate 21, the wedge block 20, the transmission rod 19 and the clamping block 17, and finally the connecting wire 1 passing through the wire hole of the end cap 3 is clamped and fixed. This mechanism ensures that the connecting wire 1 will not loosen during the installation process, and at the same time ensures the close contact between the connecting wire 1 and the wiring assembly, and realizes the two functions synchronously to improve the installation efficiency.

[0056] The elastic retractable ball bearing 25 is located at one end of the connecting column 1 4 close to the connecting column 2 7, and its ball bearing can switch between the positioning groove 1 23 and the positioning groove 2 24 on the inner wall of the connecting inner cylinder 6 to determine whether the terminal sleeve rod 8 and the terminal 9 are in a connected state. When the ball bearing is located in the positioning groove 1 23, the terminal sleeve rod 8 and the terminal 9 are in a connected state; and when the ball bearing is located in the positioning groove 2 24, it indicates that the two are in a separated state. This design helps to ensure the accuracy and safety of the connection of the terminal 8.

[0057] In summary, the terminal self-protection type electrical connector realizes the self-protection, reliability and convenient installation of the terminal 8 connection, and ensures the safety and stability of the electrical connection.

[0058] There is no specific limitation on the models and circuit connections of each component, and they can be flexibly set in practical applications. The circuits, electronic components and modules involved are all prior art, and those skilled in the art can fully implement them. It is unnecessary to elaborate, and the content protected by the present invention does not involve improvements to software and methods.

[0059] 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.

[0060] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A terminal self-protection type electrical connector, comprising a connecting column 1 (4) and a connecting column 2 (7); The ends of the connecting column 2 (7) and the connecting column 1 (4) that are away from each other are each provided with a cavity (10), and the ends of the connecting column 2 (7) and the connecting column 1 (4) that are close to each other are respectively fixed with a terminal (9) and a terminal sleeve rod (8), and the terminal (9) and the terminal sleeve rod (8) can be connected in a corresponding manner, characterized in that: Also includes: A wiring assembly, wherein the cavities (10) of the second connecting column (7) and the first connecting column (4) are both fixed with wiring assemblies, the wiring assembly in the second connecting column (7) is electrically connected to the terminal (9) correspondingly, and the wiring assembly in the first connecting column (4) is electrically connected to the terminal sleeve rod (8) correspondingly, and the wiring assembly is used to clamp and fix the wire conductor (12) of the connecting wire (1); An end cap (3), the ends of the connecting column 2 (7) and the connecting column 1 (4) which are away from each other are both equipped with an end cap (3), and the end cap (3) is used for passing and positioning the connecting wire (1); a connecting and fixing assembly is also installed on the end cap (3), and the connecting and fixing assembly is used to fix the end cap (3) with the connecting column 2 (7) and the connecting column 1 (4), and is also used to abut and fix the connecting wire (1); A connecting inner cylinder (6) and a connecting outer cylinder (5), wherein the connecting inner cylinder (6) is fixed on the outer side of the connecting column body 2 (7), and the connecting outer cylinder (5) is rotatably mounted on the outer side of the connecting column body 1 (4), and the connecting outer cylinder (5) can also be threadedly connected to the connecting inner cylinder (6) and controls the connection between the terminal (9) and the terminal sleeve rod (8); The connecting and fixing assembly comprises a fixing bolt (2), a spring (15), a clamping block (17), a transmission rod (19), a wedge block (20) and a push plate (21); The outer side of the end cover (3) is provided with a plurality of fixed cavities one (14) distributed in a circumferential direction, and the inner side of the end cover (3) is provided with a plurality of fixed cavities two (16) corresponding to the fixed cavities one (14) distributed in a circumferential direction; The fixing cavity 1 (14) is provided with a fixing bolt (2) which is threadedly connected to the screw holes at the ends of the connecting column 2 (7) and the connecting column 1 (4), and the fixing bolt (2) is also slidably and rotatably connected to the end cover (3); A transmission rod (19) is slidably disposed in the end cover (3) between the fixed cavity 1 (14) and the fixed cavity 2 (16), and a wedge block (20) and a clamping block (17) are respectively fixed at both ends of the transmission rod (19). The clamping block (17) is slidably disposed in the fixed cavity 2 (16), and the clamping block (17) is used to abut and fix the connecting line (1), and the wedge block (20) is slidably disposed in the fixed cavity 1 (14); A spring (15) is fixed on one side of the transmission rod (19) in the fixing cavity (14), and the other end of the spring (15) is fixedly connected to the wedge block (20); A push plate (21) is rotatably mounted on the fixing bolt (2). The push plate (21) is located in the fixing cavity 1 (14). One end of the push plate (21) is in sliding contact with the surface of the wedge block (20).

2. The terminal self-protection type electrical connector according to claim 1, characterized in that: The outer side of the connecting inner cylinder (6) is provided with an external thread; The cross section of the connecting outer cylinder (5) is L-shaped, one branch end of the connecting outer cylinder (5) is rotatably connected to the connecting column (4), and the inner side of the other branch of the connecting outer cylinder (5) is provided with an internal thread that can be threadedly connected to the external thread of the connecting inner cylinder (6).

3. The terminal self-protection type electrical connector according to claim 1, characterized in that: A plurality of guide edges (13) are fixedly and circumferentially distributed on the inner wall of the connecting inner cylinder (6); The outer side of the connecting column (4) is provided with a plurality of guide grooves distributed in the circumferential direction and slidably connected to the guide edges (13).

4. The terminal self-protection type electrical connector according to any one of claims 1 to 3, characterized in that: An elastic telescopic ball member (25) is installed at one end of the connecting column 1 (4) close to the connecting column 2 (7); The inner wall of the connecting inner cylinder (6) is provided with a first positioning groove (23) and a second positioning groove (24) for contacting the ball of the elastic telescopic ball member (25); When the ball of the elastic telescopic ball member (25) abuts against the second positioning groove (24), the terminal sleeve rod (8) and the terminal (9) are in a separated state; When the ball of the elastic telescopic ball member (25) abuts against the first positioning groove (23), the terminal sleeve rod (8) and the terminal (9) are in a mating connection state.

5. The terminal self-protection type electrical connector according to any one of claims 1 to 3, characterized in that: The wiring assembly comprises a wiring barrel (11) fixed to the inner end of the cavity (10); the wiring barrel (11) in the second connecting column (7) is electrically connected to the terminal (9) and the wiring barrel (11) in the first connecting column (4) is electrically connected to the terminal sleeve (8); A plurality of elastic clamping rods (22) are installed and fixedly distributed in a circumferential direction on the inner side of the wiring barrel (11), the elastic clamping rods (22) comprising an inclined portion inclined toward the inner end of the wiring barrel (11), the end of the inclined portion being connected to an arc-shaped portion; The elastic clamping rod (22) is made of elastic conductive material.

6. The terminal self-protection type electrical connector according to claim 1, characterized in that: A wire hole for the connection wire (1) to pass through is provided in the middle of the end cover (3), and a limiting ring (18) for positioning and blocking the connection wire (1) is provided at the inner end of the wire hole.

7. The terminal self-protection type electrical connector according to claim 6, characterized in that: An end surface of the wedge block (20) away from the transmission rod (19) is close to the second connecting column (7) and the first connecting column (4) and is inclined in a direction away from the transmission rod (19); When there is no external force, the spring (15) is used to ensure that the clamping block (17) is completely accommodated in the second fixing cavity (16).

8. The terminal self-protection type electrical connector according to claim 7, characterized in that: When the fixing bolt (2) is connected to the screw holes at the ends of the second connecting column (7) and the first connecting column (4), the push plate (21) pushes the wedge block (20) to move, so that the clamping block (17) is abutted and fixed to the surface of the connecting line (1) under the transmission of the transmission rod (19).

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