An electrical connector with self-protection function

Abstract

The present invention relates to the technical field of electrical connectors, and specifically to an electrical connector with a self-protection function, comprising an electrical connector housing, wherein a front locking interface is fixedly installed on the front inner surface of the electrical connector housing, and the beneficial effects are as follows: when the current of the circuit is suddenly overloaded and increased, the magnetic field force is greater than the elasticity of the push spring, and at this time, the contact guide rod inside the insulating movable pad is pushed away by the fixed iron core rod, and the contact guide rod is disengaged from the rear contact column, disconnecting the circuit to prevent damage to the electrical equipment caused by overload; when the circuit fault is eliminated, the rubber pad is lifted by pushing the trapezoidal member by rotating the movable ring, and the rocker pin is indirectly pulled up by the pull rod, so that the insulating movable pad is reset, ensuring that the circuit connection can be restored after the fault is eliminated, and solving the problem in the prior art that the self-protection mechanism of the electrical connector lacks a reset mechanism, and once it is started, the circuit connection cannot be restored after the fault is eliminated.

Description

Technical Field

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

[0002] An electrical connector is a component used in electrical or electronic systems to create temporary or permanent connections between circuits. It enables current or signals to be reliably transmitted between different circuit boards, cables, devices or systems. Connectors are often used in electronic and electrical equipment. Since the connector itself does not have a self-protection function, when the connector has an abnormal circuit, causing the temperature to rise and exceed the connector's tolerance temperature, the connector will experience rapid performance degradation, and in severe cases, it will cause disasters such as ablation and melting.

[0003] The existing Chinese patent document with publication number CN118137234A proposes a contact piece and an electrical connector with a self-protection function, which adopts a first contact piece and a second contact piece to be electrically connected to the two ends of an alloy conductor respectively. The alloy conductor has a preset melting temperature T0. The alloy is melted by the current overload of the alloy conductor to automatically cut off the power circuit, thereby ensuring that the entire circuit will not continue to rise in temperature and cause fire. The above problem is solved in this way. However, the self-protection mechanism lacks a reset mechanism. Once the self-protection mechanism is activated, after the alloy conductor melts, it is ensured that the circuit connection will not be restored after the fault is eliminated, affecting the subsequent use.

[0004] Therefore, the present invention proposes an electrical connector with a self-protection function to solve the problem in the prior art that the self-protection mechanism of the electrical connector lacks a reset mechanism and once it is activated, the circuit connection cannot be restored after the fault is eliminated. The self-protection switch of the electrical connector is changed, and a reset mechanism and an alarm mechanism are added to ensure that the self-protection switch can be restored after the fault is eliminated, so that the circuit connection can be restored. Summary of the invention

[0005] In view of the shortcomings of the prior art, an object of the present invention is to provide an electrical connector with a self-protection function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electrical connector with a self-protection function, comprising an electrical connector shell, a front end locking interface fixedly installed on the front end inner surface of the electrical connector shell, a front sealing gasket sleeved on the outer surface of the front end locking interface, a front end contact insulating plate arranged inside the front end locking interface, a rear end contact insulating head arranged at the rear end of the electrical connector shell, a rear end insulating fixed pad, an insulating movable pad and a front end insulating fixed pad arranged between the front end contact insulating plate and the rear end contact insulating head, a front end contact fixedly installed in the middle of the interior of the front end contact insulating plate, and a rear end contact fixedly installed inside the rear end contact insulating head.

[0007] Preferably, a rear contact column and a fixed iron core rod are fixedly installed inside the rear end insulating fixed pad, the fixed iron core rod is arranged on the outside of the rear contact column, the rear end of the fixed iron core rod is fixedly connected to the front side surface of the insulating head of the rear end contact piece, the outer surface of the fixed iron core rod is wrapped with a conductive coil, the rear end of the conductive coil is fixedly connected to the front end of the rear end contact piece, and the front end of the conductive coil is fixedly connected to the rear end of the rear contact column.

[0008] Preferably, a contact guide rod adapted to the position of the rear contact column is fixedly installed inside the insulating movable pad, and a magnetic ring is fixedly installed on the rear side surface of the insulating movable pad, and the position of the magnetic ring is adapted to the position of the fixed iron core rod.

[0009] Preferably, a front contact column adapted to the position of the front contact piece is fixedly installed inside the front end insulating fixed pad, the outer surface of the front contact column is slidably connected to the inner surface of the contact guide rod, and a push spring is fixedly installed on the rear side surface of the front end insulating fixed pad, and the rear end of the push spring is fixedly connected to the front side surface of the insulating movable pad.

[0010] Preferably, an insulating elastic gasket is fixedly installed between the rear surface of the front end contact piece insulating plate and the front surface of the front end insulating fixed pad, an extrusion ball is fixedly installed inside the insulating elastic gasket, a sealing ring is fixedly installed on the outer surface of the front end insulating fixed pad, and the outer surface of the sealing ring is fixedly connected to the inner surface of the electrical connector housing.

[0011] Preferably, a sealing sleeve is fixedly installed on the outer surface of the insulating head of the rear end contact piece, a rear sealing gasket is fixedly installed on the rear inner surface of the sealing sleeve, the rear sealing gasket is sleeved on the outer surface of the insulating head of the rear end contact piece, and a heat dissipation conductor is clamped on the side wall of the sealing sleeve.

[0012] Preferably, a fixing ring is symmetrically fixedly installed in the middle of the outer surface of the electrical connector shell, a movable ring is movably installed on the inner side of the fixing ring, a pushing trapezoidal piece is fixedly installed on the inner surface of the movable ring, a reset rod is fixedly installed on one side of the pushing trapezoidal piece, and the lower end of the reset rod is fixedly connected to the outer surface of the electrical connector shell.

[0013] Preferably, a rubber pad is provided on the other side of the pushing trapezoidal member, one side of the bottom of the rubber pad is hinged to the outer surface of the electrical connector housing, and a pull rod is fixedly mounted on the lower surface of the rubber pad.

[0014] Preferably, a locking protrusion is fixedly mounted on the outer surface of the insulating movable pad, a rocker pin is provided on the outer side of the locking protrusion, and the middle part of the rocker pin is rotatably connected to the inner surface of the electrical connector housing through a connecting rod.

[0015] Preferably, an elastic metal plate is fixedly installed on the upper side of one side of the rocker pin, the upper end of the elastic metal plate is fixedly connected to the inner surface of the electrical connector housing, and slots matching the locking protrusions are provided on both sides of the lower surface of the rocker pin, the upper surface of one side of the rocker pin is fixedly connected to the lower end of the pull rod, and the inner wall of the electrical connector housing is provided with a sliding hole matching the pull rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The contactor of the traditional electrical connector is divided into two parts, the front end contact and the rear end contact, and the front end contact insulating plate and the rear end contact insulating head are provided on the outside for protection. The rear end insulating fixed pad and the insulating movable pad are provided between the front end contact insulating plate and the rear end contact insulating head, and the interior thereof is provided with a matching rear contact column, a contact guide rod, and a front contact column to form a movably connected protector for connecting the front end contact and the rear end contact. The pushing spring utilizes elasticity to push the insulating movable pad close to the front end insulating fixed pad, connects the front end locking interface to the electrical equipment connection port and locks it, connects the rear end contact insulating head to the wire to form a passage, so that the front end contact, the front contact column, the contact guide rod, the rear contact column and the rear end contact form a complete circuit connection. After the connection, the conductive coil wrapped around the outside of the fixed iron core rod will form an electromagnetic field. When the current passing through the circuit remains normal, the pushing spring is set The elastic force is greater than the magnetic field force formed, but once the current in the circuit is suddenly overloaded and increased, the magnetic field force becomes greater than the elasticity of the push spring. At this time, the contact guide rod inside the insulating movable pad is pushed open by the fixed iron core rod, and the contact guide rod is disengaged from the rear contact column, disconnecting the circuit to prevent damage to the electrical equipment due to overload. When the insulating movable pad is pushed open, the rocker pin is squeezed to lift up the rear end through the rocker pin and engage with the engaging protrusion, and the front end is squeezed down by the elastic metal plate. The current sensor can detect the current passing through the circuit, and can send out an overload signal when the current is overloaded. When the circuit fault is eliminated, the movable ring is rotated to push the trapezoidal piece to lift the rubber pad, indirectly causing the rocker pin to be pulled up by the pull rod, so that the insulating movable pad is reset, ensuring that the circuit connection can be restored after the fault is eliminated. This solves the problem in the prior art that the self-protection mechanism of the electrical connector lacks a reset mechanism. Once the reset mechanism is started, the circuit connection cannot be restored after the fault is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall front-end structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall back-end structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal front structure of the movable ring of the present invention.

[0021] Figure 4 It is a schematic diagram of the internal rear structure of the movable ring of the present invention.

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the electrical connector housing in a normal connection state of the present invention.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the electrical connector housing in the disconnected connection state of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the internal components of the electrical connector housing of the present invention.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the rear end insulating fixing pad and the front end insulating fixing pad of the present invention.

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the rear sealing gasket of the present invention.

[0027] Fig.10 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0028] Fig.11 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0029] Fig.12 It is a schematic diagram of the enlarged structure of point C of the present invention.

[0030] In the figure: 1. electrical connector housing; 2. front locking interface; 21. front sealing gasket; 3. front contact insulating plate; 31. front contact; 4. rear contact insulating head; 41. rear contact; 42. sealing sleeve; 421. rear sealing gasket; 43. heat dissipation conductor; 431. hollow heat dissipation groove; 432. heat dissipation port; 44. current sensor; 5. rear insulation fixing plate; 51. rear contact column; 52. fixed iron core rod; 53. conductive coil; 6. insulation movable Pad; 61, contact guide rod; 62, magnetic ring; 63, snap-fit ​​protrusion; 7, front end insulating fixed pad; 71, front contact column; 72, push spring; 73, insulating elastic gasket; 731, squeeze ball; 74, sealing ring; 75, first insulating protective cover; 751, second insulating protective cover; 8, fixed ring; 81, movable ring; 82, push trapezoidal member; 83, rubber pad; 821, reset pull rod; 831, pull rod; 84, rocker pin; 841, elastic metal plate. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figures 1 to 12The present invention provides a technical solution: comprising an electrical connector housing 1, a front end locking interface 2 is fixedly installed on the front end inner surface of the electrical connector housing 1, and a front sealing gasket 21 is sleeved on the outer surface of the front end locking interface 2, characterized in that: a front end contact insulating plate 3 is arranged inside the front end locking interface 2, a rear end contact insulating head 4 is arranged at the rear end of the electrical connector housing 1, a rear end insulating fixed pad 5, an insulating movable pad 6 and a front end insulating fixed pad 7 are arranged between the front end contact insulating plate 3 and the rear end contact insulating head 4, a front end contact 31 is fixedly installed in the middle of the front end contact insulating plate 3, a rear end contact 41 is fixedly installed inside the rear end contact insulating head 4, a rear end contact column 51 and a fixed iron core rod 52 are fixedly installed inside the rear end insulating fixed pad 5, the fixed iron core rod 52 is arranged on the outside of the rear contact column 51, and the fixed iron core rod 52 is fixedly installed on the inside of the rear end insulating fixed pad 5. The rear end is fixedly connected to the front side surface of the insulating head 4 of the rear end contact piece, a conductive coil 53 is wound around the outer surface of the fixed iron core rod 52, the rear end of the conductive coil 53 is fixedly connected to the front end of the rear end contact piece 41, the front end of the conductive coil 53 is fixedly connected to the rear end of the rear contact column 51, a contact guide rod 61 adapted to the position of the rear contact column 51 is fixedly installed inside the insulating movable pad 6, a magnetic ring 62 is fixedly installed on the rear side surface of the insulating movable pad 6, the position of the magnetic ring 62 is adapted to the position of the fixed iron core rod 52, a front contact column 71 adapted to the position of the front end contact piece 31 is fixedly installed inside the front end insulating fixed pad 7, the outer surface of the front contact column 71 is slidably connected to the inner surface of the contact guide rod 61, a push spring 72 is fixedly installed on the rear side surface of the front end insulating fixed pad 7, and the rear end of the push spring 72 is fixedly connected to the front side surface of the insulating movable pad 6;

[0034] In this embodiment, the front end contact insulating plate 3 fixes the front end contact 31 as a whole, and the rear end contact insulating head 4 fixes the rear end contact 41 as a whole, and provides insulation protection for the front end contact 31 and the rear end contact 41 respectively, replacing the contactor of the traditional electrical connector, which is divided into two parts, the rear end insulating fixed pad 5, the insulating movable pad 6 and the front end insulating fixed pad 7 are arranged between the front end contact insulating plate 3 and the rear end contact insulating head 4, and the rear end insulating fixed pad 7 is respectively arranged with matching rear contact columns 51, contact guide rods 61 and front contact columns 71 inside thereof to form a movably connected protector for connecting the front end contact 31 and the rear end contact 41, and the pushing spring 72 uses elasticity to push the insulating movable pad 6 close to the front end insulating fixed pad 7, and the front contact column 71 slides on the contact guide rod 61. The rear end of the front contact column 71 is clamped with the front end of the rear contact column 51, and the rear contact column 51 is connected to the rear end contact 41 through 531, so that the front end is locked. The interface 2 is connected to the electrical equipment connection port, so that the front end contact piece 31 is connected to the rear end of the electrical equipment and is clamped with the front end of the front contact column 71, and the rear end contact piece 41 is connected to the cable and tightened to form a passage, so that the front end contact piece 31, the front contact column 71, the contact guide rod 61, the rear contact column 51 and the rear end contact piece 41 form a complete circuit connection, and the conductive coil 53 wrapped around the outside of the fixed iron core rod 52 will pass current after the circuit is connected to form an electromagnetic field. When the current passing through the circuit remains normal, the elastic force of the push spring 72 is selected so that the elastic force of the push spring 72 is greater than the magnetic field force formed by the maximum current allowed to pass through the circuit. However, once the current of the circuit is suddenly overloaded and increased, the magnetic field force is greater than the elastic force of the push spring 72. At this time, the contact guide rod 61 inside the insulating movable pad 6 is pushed away by the fixed iron core rod 52, and the contact guide rod 61 is disengaged from the rear contact column 51, disconnecting the circuit to prevent damage to the electrical equipment caused by overload, forming self-protection, and the design is simple and responsive.

[0035] Embodiment 2

[0036] See also Figures 1 to 12 On the basis of the first embodiment, in order to protect the connection between the front contact column 71 and the contact guide rod 61, the present embodiment further proposes that a first insulating protective sleeve 75 is provided on the outside of the front contact column 71, one end of the first insulating protective sleeve 75 is fixedly connected to the rear surface of the front insulating fixed pad 7, and a second insulating protective sleeve 751 is provided on the outside of the contact guide rod 61, one end of the second insulating protective sleeve 751 is fixedly connected to the rear surface of the insulating movable pad 6, and the outer surface of the second insulating protective sleeve 751 is slidably connected to the inner surface of the first insulating protective sleeve 75;

[0037] In this embodiment, the first insulating protective cover 75 insulates and protects the front contact pin 71, and the second insulating protective cover 751 insulates and protects the contact guide rod 61 to prevent it from being affected by electromagnetic waves. The second insulating protective cover 751 can slide inside the first insulating protective cover 75 and cooperate with the contact guide rod 61 to slide backward on the front contact pin 71 to avoid interference and increase the accuracy of circuit connection.

[0038] Embodiment 3

[0039] See also Figures 1 to 12 On the basis of the second embodiment, in order to ensure the safety of the connection between the front-end contact insulating plate 3 and the rear-end contact insulating head 4, the present embodiment further proposes that an insulating elastic gasket 73 is fixedly installed between the rear side surface of the front-end contact 31 and the front side surface of the front-end insulating fixed pad 7, an extrusion ball 731 is fixedly installed inside the insulating elastic gasket 73, a sealing ring 74 is fixedly installed on the outer surface of the front-end insulating fixed pad 7, the outer surface of the sealing ring 74 is fixedly connected to the inner surface of the electrical connector housing 1, a sealing sleeve 42 is fixedly installed on the outer surface of the rear-end contact insulating head 4, a rear sealing gasket 421 is fixedly installed on the rear inner surface of the sealing sleeve 42, the rear sealing gasket 421 is sleeved on the outer surface of the rear-end contact insulating head 4, and a heat dissipation conductor 43 is clamped and installed on the side wall of the sealing sleeve 42,

[0040] In this embodiment, when the front locking interface 2 is released from the connection state with the electrical equipment, the squeezing ball 731 cooperates with the squeezing ball 731 to push the front contact insulating plate 3 away so that the front contact 31 and the front contact column 71 are disengaged to disconnect the electrical equipment, thereby avoiding leakage during fault detection. The sealing sleeve 42 and the rear sealing gasket 421 increase the sealing of the rear side of the rear end contact insulating head 4 and can provide insulation protection. The heat dissipation conductor 43 increases the heat dissipation effect inside the electrical connector housing 1. The current sensor 44 can detect the current passing through and can output an overload current signal to the equipment for warning.

[0041] Embodiment 4

[0042] See also Figures 1 to 12 On the basis of the third embodiment, in order to improve the heat dissipation effect, the present embodiment further proposes that a hollow heat dissipation groove 431 is provided inside the heat dissipation conductor 43, a heat dissipation port 432 is provided on the side wall of the heat dissipation conductor 43, and a current sensor 44 is fixedly installed on the middle of the front side surface of the rear end insulating fixing pad 5;

[0043] In this embodiment, the hollow heat dissipation slot 431 and the heat dissipation port 432 can dissipate the heat generated by the circuit connection inside the electrical connector housing 1 , so as to prevent the conductive coil 53 from overheating and causing a short circuit.

[0044] Embodiment 5

[0045] See also Figures 1 to 12 On the basis of the fourth embodiment, in order to restore the circuit after the circuit is broken, the present embodiment further proposes that a fixing ring 8 is symmetrically fixedly installed in the middle of the outer surface of the electrical connector housing 1, a movable ring 81 is movably installed on the inner side of the fixing ring 8, a pushing trapezoidal member 82 is fixedly installed on the inner surface of the movable ring 81, a reset rod 821 is fixedly installed on one side of the pushing trapezoidal member 82, the lower end of the reset rod 821 is fixedly connected to the outer surface of the electrical connector housing 1, a rubber pad 83 is arranged on the other side of the pushing trapezoidal member 82, one side of the bottom of the rubber pad 83 is hinged to the outer surface of the electrical connector housing 1, and the lower surface of the rubber pad 83 is fixedly installed Pull rod 831, the outer surface of the insulating movable pad 6 is fixedly installed with a locking protrusion 63, the outer side of the locking protrusion 63 is provided with a rocker pin 84, the middle part of the rocker pin 84 is rotatably connected to the inner surface of the electrical connector housing 1 through a connecting rod, an elastic metal plate 841 is fixedly installed above one side of the rocker pin 84, the upper end of the elastic metal plate 841 is fixedly connected to the inner surface of the electrical connector housing 1, and the lower surface of the rocker pin 84 is provided with a card groove matching the locking protrusion 63 on both sides, the upper surface of one side of the rocker pin 84 is fixedly connected to the lower end of the pull rod 831, and the inner wall of the electrical connector housing 1 is provided with a sliding hole matching the pull rod 831;

[0046] In this embodiment, the fixed ring 8 is used to limit the installation of the movable ring 81. When the insulating movable pad 6 is pushed open by the strong magnetic field force, the locking protrusion 63 will squeeze the rear end of the rocker pin 84 through the rocker pin 84 and lock with the locking protrusion 63. The front end is squeezed down by the elastic metal plate 841. At this time, the insulating movable pad 6 is stabilized in the short-circuit position. When the circuit fault is eliminated, the movable ring 81 is rotated to push the trapezoidal member 82 to lift the rubber pad 83, and indirectly the rocker pin 84 is pulled up by the pull rod 831, so that The insulating movable pad 6 can be reset by the rocker pin 84, and then the movable ring 81 is loosened to push the trapezoidal member 82 to be pulled and reset by the reset rod 821, and the rubber pad 83 is also reset. The elastic metal plate 841 will squeeze the front end of the rocker pin 84 so that the front end slot of the rocker pin 84 is engaged with the engaging protrusion 63, ensuring that the circuit connection can be restored after the fault is eliminated, thereby solving the problem in the prior art that the self-protection mechanism of the electrical connector lacks a reset mechanism. Once it is activated, the circuit connection cannot be restored after the fault is eliminated.

[0047] Embodiment 6

[0048] See also Figures 1 to 12 Based on the fifth embodiment, this embodiment further proposes an electrical connector with a self-protection function, comprising the following steps:

[0049] Step 1: Connect the front locking interface 2 to the electrical equipment connection port, connect the front contact 31 to the rear end of the electrical equipment and clamp the front end of the front contact column 71, and tighten the rear contact 41 to form a passage, so that the front contact 31, the front contact column 71, the contact guide rod 61, the rear contact column 51 and the rear contact 41 form a complete circuit connection;

[0050] Step 2: automatic overload protection. The current of the circuit is suddenly overloaded and increases, so that the magnetic field force is greater than the elastic force of the push spring 72. At this time, the contact guide rod 61 inside the insulating movable pad 6 is pushed away by the fixed iron core rod 52, and the contact guide rod 61 is disconnected from the rear contact column 51, disconnecting the circuit to prevent damage to the electrical equipment caused by overload, thus forming self-protection;

[0051] Step three, the circuit is restored after the fault is eliminated. Rotate the movable ring 81 to push the trapezoidal piece 82 to lift the rubber pad 83, and indirectly pull up the rocker pin 84 by the pull rod 831, so that the insulating movable pad 6 can be reset by the rocker pin 84, and then release the movable ring 81, push the trapezoidal piece 82 to be reset by the reset pull rod 821, and the rubber pad 83 is also reset. The elastic metal plate 841 will squeeze the front end of the rocker pin 84, so that the front end slot of the rocker pin 84 is engaged with the engaging protrusion 63, ensuring that the circuit connection can be restored after the fault is eliminated.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrical connector with a self-protection function, comprising an electrical connector housing (1), a front locking interface (2) being fixedly mounted on the front inner surface of the electrical connector housing (1), and a front sealing gasket (21) being sleeved on the outer surface of the front locking interface (2), characterized in that: A front end contact insulating plate (3) is arranged inside the front end locking interface (2), a rear end contact insulating head (4) is arranged at the rear end of the electrical connector housing (1), a rear end insulating fixed pad (5), an insulating movable pad (6) and a front end insulating fixed pad (7) are arranged between the front end contact insulating plate (3) and the rear end contact insulating head (4), a front end contact (31) is fixedly installed in the middle of the front end contact insulating plate (3), a rear end contact (41) is fixedly installed inside the rear end contact insulating head (4), a rear end contact column (51) and a fixed iron core rod (52) are fixedly installed inside the rear end insulating fixed pad (5), the fixed iron core rod (52) is arranged on the outside of the rear end contact column (51), the rear end of the fixed iron core rod (52) is fixedly connected to the front side surface of the rear end contact insulating head (4), and the outer surface of the fixed iron core rod (52) is wrapped with a conductive A coil (53), wherein the rear end of the conductive coil (53) is fixedly connected to the front end of the rear contact piece (41), the front end of the conductive coil (53) is fixedly connected to the rear end of the rear contact column (51), a contact guide rod (61) adapted to the position of the rear contact column (51) is fixedly installed inside the insulating movable pad (6), a magnetic ring (62) is fixedly installed on the rear side surface of the insulating movable pad (6), the position of the magnetic ring (62) is adapted to the position of the fixed iron core rod (52), a front contact column (71) adapted to the position of the front contact piece (31) is fixedly installed inside the front insulating fixed pad (7), the outer surface of the front contact column (71) is slidably connected to the inner surface of the contact guide rod (61), and a push spring (72) is fixedly installed on the rear side surface of the front insulating fixed pad (7), the rear end of the push spring (72) is fixedly connected to the front side surface of the insulating movable pad (6).

2. An electrical connector with self-protection function according to claim 1, characterized in that: An insulating elastic gasket (73) is fixedly mounted between the rear surface of the front end contact piece insulating plate (3) and the front surface of the front end insulating fixed gasket (7); a squeezing ball (731) is fixedly mounted inside the insulating elastic gasket (73); a sealing ring (74) is fixedly mounted on the outer surface of the front end insulating fixed gasket (7); and the outer surface of the sealing ring (74) is fixedly connected to the inner surface of the electrical connector housing (1).

3. The electrical connector with self-protection function according to claim 1, characterized in that: A sealing sleeve (42) is fixedly mounted on the outer surface of the rear end contact insulating head (4), a rear sealing gasket (421) is fixedly mounted on the rear inner surface of the sealing sleeve (42), the rear sealing gasket (421) is sleeved on the outer surface of the rear end contact insulating head (4), and a heat dissipation conductor (43) is clamped and mounted on the side wall of the sealing sleeve (42).

4. The electrical connector with self-protection function according to claim 1, characterized in that: A fixing ring (8) is symmetrically fixedly mounted in the middle of the outer surface of the electrical connector housing (1); a movable ring (81) is movably mounted inside the fixing ring (8); a pushing trapezoidal member (82) is fixedly mounted on the inner surface of the movable ring (81); a reset pull rod (821) is fixedly mounted on one side of the pushing trapezoidal member (82); and the lower end of the reset pull rod (821) is fixedly connected to the outer surface of the electrical connector housing (1).

5. An electrical connector with self-protection function according to claim 4, characterized in that: A rubber pad (83) is provided on the other side of the pushing trapezoidal member (82), one side of the bottom of the rubber pad (83) is hinged to the outer surface of the electrical connector housing (1), and a pull rod (831) is fixedly mounted on the lower surface of the rubber pad (83).

6. The electrical connector with self-protection function according to claim 1, characterized in that: A locking protrusion (63) is fixedly mounted on the outer surface of the insulating movable pad (6), a rocker pin (84) is arranged on the outer side of the locking protrusion (63), and the middle part of the rocker pin (84) is rotatably connected to the inner surface of the electrical connector housing (1) via a connecting rod.

7. An electrical connector with self-protection function according to claim 6, characterized in that: An elastic metal plate (841) is fixedly mounted above one side of the rocker pin (84), the upper end of the elastic metal plate (841) is fixedly connected to the inner surface of the electrical connector housing (1), and both sides of the lower surface of the rocker pin (84) are provided with slots that match the engaging protrusions (63), the upper surface of one side of the rocker pin (84) is fixedly connected to the lower end of the pull rod (831), and the inner wall of the electrical connector housing (1) is provided with a sliding hole that matches the pull rod (831).

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