Terminal connector and production method thereof

Abstract

The invention discloses a terminal connector and a production method of the terminal connector. The terminal connector comprises a mother wiring terminal, a son wiring terminal, a metal contact pin, a metal contact seat, a plugging groove, an abutting concave surface, an open cavity, a double-end abutting unit and a power supply module. The double-end abutting unit has the following advantages and effects that the double-end abutting unit can be tightly attached to the two abutting concave surfaces and generate friction force after receiving supplied power, so that the secondary wiring terminal is stably inserted into the primary wiring terminal, and the connection stability after the secondary wiring terminal is inserted into the primary wiring terminal is improved; meanwhile, the anti-loosening purpose is achieved based on the generated friction force, and even if the connector works in a high-vibration environment, the child wiring terminal and the mother wiring terminal can be tightly inserted and matched. The supply module can supply power to the double-end abutting unit.

Description

Technical Field

[0001] The present invention relates to the field of connectors for electrical connection, and particularly to a terminal connector and a production method thereof. Background Art

[0002] As an important part of connecting electrical equipment and circuits, terminal connectors are widely used in various electronic products, electrical equipment, and industrial control systems. With the rapid development of modern technology and the complexity of electronic devices, the performance requirements of terminal connectors are constantly increasing, and they face many challenges.

[0003] 1. Poor connection stability: Traditional terminal connectors often have poor contact due to changes in the use environment (such as vibration, temperature change, humidity influence, etc.), resulting in unstable electrical signal transmission and even equipment failure. For example, in the fields of automobiles, aviation, and industrial automation, equipment often works in a high-vibration environment, and the performance of traditional connectors under these conditions far cannot meet the requirements.

[0004] 2. Insufficient anti-loosening function: Many current terminal connectors lack an effective self-locking function and cannot automatically maintain a tightened state after connection. Under long-term use and in a specific environment, the connector may become loose due to vibration changes, resulting in poor electrical contact and affecting the normal operation of the equipment.

[0005] Therefore, the existing terminal connector technology has significant deficiencies in terms of stability and anti-loosening function, and there is an urgent need to develop new technical solutions to meet the market's demand for highly reliable connectors. Summary of the Invention

[0006] The purpose of the present invention is to provide a terminal connector and a production method thereof to solve the problems raised in the background art.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: To achieve the above purpose, the present invention provides a terminal connector, including a female wiring terminal and a male wiring terminal that can be inserted and mated. A plurality of horizontal metal contact pins that penetrate its inside and outside are provided inside the female wiring terminal, and a plurality of metal contact seats with the same number as the metal contact pins are fixedly provided inside the male wiring terminal; after the female wiring terminal and the male wiring terminal are inserted and mated, each of the metal contact pins will be inserted into the corresponding metal contact seat to form an electrical connection; A plugging groove is provided inside the female wiring terminal, and each of the metal contact pins can extend into the plugging groove. Opposite sides of the plugging groove are each provided with a pressing concave surface; The interior of the sub-terminal has an open cavity, and a double-end tightening unit is arranged in the open cavity. After the sub-terminal is inserted and mated with the mother terminal, the double-end tightening unit will extend into the insertion slot, and the double-end tightening unit can tightly adhere to two tightening concave surfaces and generate frictional force after receiving the supplied power, so that the sub-terminal is stably inserted and mated in the mother terminal; A power supply module is also arranged in the open cavity, and the power supply module can supply power to the double-end tightening unit.

[0008] A further setting is that the power supplied by the power supply module is condensed gas; After the power supply module supplies the condensed gas to the double-end tightening unit, it can be self-sealed to prevent the condensed gas received by the double-end connection unit from leaking; the double-end connection unit is a gas-driven structure, and the double-end connection unit can be based on the received condensed gas. To maintain the state of tightly adhering to two tightening concave surfaces and generating frictional force.

[0009] A further setting is that the double-end connection unit includes two sets of connection execution members symmetrically arranged along the central axis of the open cavity; both sets of the connection execution members include a fixed-point rotating shaft rotatably arranged in the open cavity, and an arc-shaped rigid bearing section is fixedly arranged on the fixed-point rotating shaft. The fixed-point rotating shaft is fixed to the right end of the rigid bearing section; a flexible damping section is fixedly arranged on the outer side of the rigid bearing section. As the rigid bearing section rotates outward, the flexible damping section can tightly adhere to the corresponding tightening concave surface and generate frictional force; Tightening openings for respectively allowing the corresponding flexible damping sections to extend out of the open cavity are formed on both sides of the sub-terminal; First clamping blocks are fixedly arranged on the inner sides of the two rigid bearing sections, and a first return spring is arranged between the two first clamping blocks. Based on the restoring force of the first return spring, the two rigid bearing sections have the kinetic energy to rotate inward.

[0010] A further setting is that the double-end abutting unit includes a main inner shell, the central axis of the main inner shell coincides with the central axis of the cavity, the main inner shell has a stroke inner cavity inside, and both sides of the main inner shell have openings communicating with the stroke inner cavity; two sets of single-end actuating members symmetrically arranged along the central axis of the main inner shell are arranged in the main inner shell; both sets of the single-end actuating members include passive top blocks, and the passive top blocks can move outward or inward in the stroke inner cavity; a top-out block is fixedly arranged on the outer side of the passive top block, the passive top block matches the cross-sectional width of the stroke inner cavity, a limit contact block is fixedly arranged at a position of the stroke inner cavity close to the opening, and the limit contact block can collide with the passive top block to achieve the purpose of limiting; there is a top-out gap between the limit contact block and the side wall of the stroke inner cavity, and the top-out block can extend into the top-out gap; a flexible top block with a semicircular cross-sectional shape is fixedly arranged on the outer side of the top-out block; A tip is fixedly arranged at the left end of the rigid bearing section, and the tip will maintain the state of extending into the corresponding opening of the stroke inner cavity under the restoring force of the first return spring; when the stroke inner cavity receives the condensed gas, it will push the two flexible top blocks to move outward, and the two flexible top blocks will respectively abut on the corresponding tips and then push the two rigid bearing sections to rotate outward.

[0011] A further setting is that second clamping blocks are fixedly arranged on the inner sides of the two passive top blocks, and a second return spring is arranged between the two second clamping blocks, and the restoring force of the second return spring gives the two passive top blocks the kinetic energy to move inward; An expansion air cavity for receiving condensed gas is formed between the two passive top blocks.

[0012] A further setting is that the double-end abutting unit further includes a sub-shell fixing the right end of the main inner shell, a condensed gas inlet channel and a condensed gas outlet channel are opened in the sub-shell, and the condensed gas outlet channel is communicated with the expansion air cavity; A sealing inner cavity is further opened inside the sub-shell, a sealing top block and a sealing spring are arranged in the sealing inner cavity, the condensed gas inlet channel is located outside the sealing inner cavity, the condensed gas outlet channel is located at the right end of the sealing inner cavity, and a sealing step is opened in the sub-shell; the elastic force of the sealing spring gives the sealing top block the kinetic energy to tightly abut against the sealing step, and when the sealing top block tightly abuts against the sealing step, the sealing top block will separate the condensed gas inlet channel and the condensed gas outlet channel, and at the same time the condensed gas outlet channel will be sealed by the sealing top block; An inner block for sleeving the sealing spring is fixedly arranged on the inner side of the sealing inner cavity, and the inner block can collide with the sealing top block to prevent the sealing spring from being squeezed and damaged.

[0013] A further setting is that auxiliary sealing rings are fixedly arranged at both the left and right ends of the sealing step, and a main sealing ring is fixedly arranged on the outer side of the sealing step.

[0014] A further setting is that limiting bumps capable of colliding with the female terminal to limit the position are fixedly arranged on both sides of the male terminal; an extension area is fixedly arranged at the right end of the male terminal and is located on the right side of the two limiting bumps; when the female terminal is inserted and mated with the male terminal, the extension area is exposed to the outside. A condensate gas inlet is fixedly arranged on the extension area, an inlet inner channel communicating with the condensate gas inlet is formed in the extension area, and a first inner pipe communicating the inlet inner channel and the condensate gas inlet channel is arranged in the cavity. A condensate gas discharge outlet is also fixedly arranged on the extension area, a discharge inner channel communicating with the condensate gas discharge outlet is formed in the extension area, and a second inner pipe communicating the discharge inner channel and the condensate gas outlet channel is arranged in the cavity; a sealing plugging block for sealing the condensate gas discharge outlet is detachably arranged at the condensate gas discharge outlet.

[0015] To achieve the above object, the present invention also provides a production method for a terminal connector, which includes the following steps: The female terminal and the male terminal are produced by an injection molding process. The female terminal and the male terminal are surface sprayed or treated to enhance their anti-slip performance. The internal structures of the female terminal and the male terminal are assembled through an automated assembly line. The produced female terminal and male terminal are subjected to 100% full inspection and random sampling to ensure that the qualified rate reaches the preset standard.

[0016] The present invention has the following beneficial effects: 1. In the present invention, after the double-end tightening unit is inserted and mated with the female terminal, it extends into the insertion slot; at the same time, the double-end tightening unit can closely adhere to the two tightening concave surfaces and generate friction after receiving the supplied power, so that the male terminal is stably inserted into the female terminal, thereby improving the connection stability after the male terminal is inserted and mated with the female terminal. At the same time, based on the generated friction, the purpose of anti-loosening is achieved. Even when working in a high-vibration environment, the male terminal and the female terminal can still be closely inserted and mated; the setting of the supply module can supply power to the double-end tightening unit.

[0017] 2. In the present invention, the power supplied by the power supply module is condensate gas. Using gas as power can effectively replace manual direct force application, making the actual operation more labor-saving. Moreover, it can effectively eliminate the damage of the sub-terminal and the mother terminal caused by excessive hand force application, improving the service life. At the same time, compared with using liquid as power, gas is non-conductive, avoiding short circuits. In addition, the condensate gas can also play a role in heat dissipation.

[0018] 3. In the present invention, the rigid bearing section can rotate around a fixed pivot axis, which can improve the structural stability; the flexible damping section can avoid hard impacts with the abutting concave surface. It prevents loosening by closely adhering to the corresponding abutting concave surface and generating friction, and can effectively absorb the vibration force in a high-vibration environment, improving the service life. The setting of the first return spring can provide the kinetic energy for the two rigid bearing sections to rotate inward, so that the flexible damping section will be away from the abutting concave surface in the initial state, facilitating the insertion operation of the sub-terminal and the mother terminal.

[0019] 4. In the present invention, after the passive top block receives the condensate gas in the stroke cavity, it moves outward, and then pushes the two flexible top blocks to move outward. The two flexible top blocks will respectively abut on the corresponding tips, and then push the two rigid bearing sections to rotate outward, finally making the two flexible damping sections closely adhere to the corresponding abutting concave surfaces and generate friction; it has the advantage of simple control method, only by sending in the condensate gas can it be controlled and the power supply be realized; the setting of the flexible top block can avoid hard impacts with the tip, improving the structural life; the limit contact block can collide with the passive top block to achieve the limit function.

[0020] 5. In the present invention, the setting of the second return spring can provide the kinetic energy for the two passive top blocks to move inward, so that the two flexible top blocks will not contact the corresponding tips, avoiding hindering the inward movement of the flexible damping section.

[0021] 6. In the present invention, in the initial state, the sealing top block is tightly abutted against the sealing step under the elastic force of the sealing spring, thus maintaining the state of separating the condensate gas inlet channel and the condensate gas outlet channel; the built-in block can collide with the sealing top block to prevent the sealing spring from being squeezed and damaged.

[0022] 7. In the present invention, the setting of the sub-sealing ring and the main sealing ring can improve the sealing performance.

[0023] 8. In the present invention, the setting of the limit convex block can not only align the position of the double-end abutting unit with the abutting concave surface, but also ensure that the extension area is exposed to the outside, providing an operation space for the subsequent feeding and discharging of the condensate gas. The condensate gas inlet is provided to send the condensate gas into the condensate gas inlet channel; the condensate gas discharge outlet is provided to discharge the condensate gas; the sealing plug block is provided to manually seal the condensate gas discharge outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the embodiment; Figure 2 is Figure 1 Enlarged view of part A in Figure 3 is Figure 1 Enlarged view of part B in Figure 4 Flow chart of the embodiment.

[0025] In the figure: 11, female wiring terminal; 12, metal contact pin; 13, insertion slot; 14, abutting concave surface; 21, male wiring terminal; 22, metal contact seat; 23, open cavity; 31, fixed-point rotating shaft; 32, rigid bearing section; 33, flexible damping section; 34, abutting opening; 35, first clamping block; 36, first return spring; 41, main inner shell; 42, stroke inner cavity; 43, opening; 44, passive top block; 45, ejecting block; 46, limiting contact block; 47, ejecting gap; 48, flexible top block; 49, tip; 51, second clamping block; 52, second return spring; 53, expanded air cavity; 61, sub-shell; 62, condensate gas inlet channel; 63, condensate gas outlet channel; 71, sealed inner cavity; 72, sealed top block; 73, sealed spring; 74, sealed step; 75, built-in block; 81, sub-sealing ring; 82, main sealing ring; 91, limiting convex block; 92, extension area; 931, condensate gas inlet; 932, entering inner channel; 933, first inner tube; 941, condensate gas discharge outlet; 942, discharging inner channel; 943, second inner tube. Detailed implementation manners

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] As shown in the attached Figures 1 to 4 figure; This embodiment discloses a terminal connector, including a female wiring terminal 11 and a male wiring terminal 21 that can be inserted and mated. A plurality of horizontal metal contact pins 12 penetrating its inner and outer parts are arranged inside the female wiring terminal 11, and a plurality of metal contact seats 22 with the same number as the metal contact pins 12 are fixedly arranged inside the male wiring terminal 21; after the female wiring terminal 11 and the male wiring terminal 21 are inserted and mated, each metal contact pin 12 will be inserted into the corresponding metal contact seat 22 to form an electrical connection; in this embodiment, the number of metal contact pins 12 is 3.

[0028] An insertion slot 13 is opened in the female wiring terminal 11, and each metal contact pin 12 can extend into the insertion slot 13. Abutting concave surfaces 14 are opened on both opposite sides of the insertion slot 13; The inner part of the sub-terminal 21 has an open cavity 23, and a double-end tightening unit is arranged in the open cavity 23. After the sub-terminal 21 is inserted and mated with the mother terminal 11, the double-end tightening unit will extend into the insertion slot 13, and the double-end tightening unit can tightly adhere to the two tightening concave surfaces 14 and generate frictional force after receiving the supplied power, so that the sub-terminal 21 is stably inserted into the mother terminal 11; A power supply module is also arranged in the open cavity 23, and the power supply module can supply power to the double-end tightening unit.

[0029] Among them, the power supplied by the power supply module is condensed gas; After the power supply module supplies the condensed gas to the double-end tightening unit, it can be self-sealed to prevent the condensed gas received by the double-end connection unit from leaking; the double-end connection unit is a gas-driven structure, and the double-end connection unit can maintain a state of tightly adhering to the two tightening concave surfaces 14 and generating frictional force based on the received condensed gas.

[0030] Among them, the double-end connection unit includes two sets of connection execution members symmetrically arranged along the central axis of the open cavity 23; both sets of connection execution members include a fixed-point rotating shaft 31 rotatably arranged in the open cavity 23, and an arc-shaped rigid bearing section 32 is fixedly arranged on the fixed-point rotating shaft 31, and the fixed-point rotating shaft 31 is fixed to the right end of the rigid bearing section 32; a flexible damping section 33 is fixedly arranged on the outer side of the rigid bearing section 32, and as the rigid bearing section 32 rotates outward, the flexible damping section 33 can tightly adhere to the corresponding tightening concave surface 14 and generate frictional force.

[0031] It should be added that in this embodiment, the material of the rigid bearing section 32 is carbon steel; the material of the flexible damping section 33 is polyurethane.

[0032] Tightening opening holes 34 for the corresponding flexible damping sections 33 to extend out of the open cavity 23 are respectively arranged on both sides of the sub-terminal 21; First clamping blocks 35 are fixedly arranged on the inner sides of the two rigid bearing sections 32, and a first return spring 36 is arranged between the two first clamping blocks 35. Based on the restoring force of the first return spring 36, the two rigid bearing sections 32 have the kinetic energy to rotate inward.

[0033] Among them, the double-end abutting unit includes a main inner shell 41. The central axis of the main inner shell 41 coincides with the central axis of the cavity 23. There is a stroke inner cavity 42 inside the main inner shell 41. Openings 43 communicating with the stroke inner cavity 42 are provided on both sides of the main inner shell 41. Two sets of single-end actuating members are arranged symmetrically along the central axis of the main inner shell 41 in the main inner shell 41. Both sets of single-end actuating members include a passive top block 44. The passive top block 44 can move outward or inward in the stroke inner cavity 42. An ejection block 45 is fixedly arranged on the outer side of the passive top block 44. The passive top block 44 matches the cross-sectional width of the stroke inner cavity 42. A limit contact block 46 is fixedly arranged at a position of the stroke inner cavity 42 close to the opening 43. The limit contact block 46 can collide with the passive top block 44 to achieve the purpose of limiting. There is an ejection gap 47 between the limit contact block 46 and the side wall of the stroke inner cavity 42. The ejection block 45 can extend into the ejection gap 47. A flexible top block 48 with a semicircular cross-sectional shape is fixedly arranged on the outer side of the ejection block 45; It should be added that the material of the flexible top block 48 is polyurethane.

[0034] A tip 49 is fixedly arranged at the left end of the rigid bearing section 32. The tip 49 will maintain the state of extending into the corresponding opening 43 of the stroke inner cavity 42 under the reset force of the first reset spring 36. When the stroke inner cavity 42 receives the condensed gas, it will push the two flexible top blocks 48 to move outward. The two flexible top blocks 48 will respectively abut against the corresponding tips 49 and then push the two rigid bearing sections 32 to rotate outward.

[0035] Among them, second clamping blocks 51 are fixedly arranged on the inner sides of the passive top blocks 44. A second reset spring 52 is arranged between the two second clamping blocks 51. Due to the reset force of the second reset spring 52, the two passive top blocks 44 have the kinetic energy to move inward; An expanded gas cavity 53 for receiving the condensed gas is formed between the two passive top blocks 44.

[0036] Among them, the double-end abutting unit further includes a sub-shell 61 fixed to the right end of the main inner shell 41. A condensed gas inlet channel 62 and a condensed gas outlet channel 63 are opened in the sub-shell 61. The condensed gas outlet channel 63 communicates with the expanded gas cavity 53; A sealing inner cavity 71 is further opened inside the sub-shell 61. A sealing top block 72 and a sealing spring 73 are arranged in the sealing inner cavity 71. The condensed gas inlet channel 62 is located outside the sealing inner cavity 71. The condensed gas outlet channel 63 is located at the right end of the sealing inner cavity 71. A sealing step 74 is opened in the sub-shell 61. Due to the elastic force of the sealing spring 73, the sealing top block 72 has the kinetic energy to closely abut against the sealing step 74. And when the sealing top block 72 closely abuts against the sealing step 74, the sealing top block 72 will separate the condensed gas inlet channel 62 and the condensed gas outlet channel 63. At the same time, the condensed gas outlet channel 63 will be sealed by the sealing top block 72; An inner block 75 for sleeving a sealing spring 73 is fixedly arranged inside the sealed inner cavity 71. The inner block 75 can collide with the sealing top block 72 to prevent the sealing spring 73 from being squeezed and damaged.

[0037] Wherein, auxiliary sealing rings 81 are fixedly arranged at both the left and right ends of the sealing step 74, and a main sealing ring 82 is fixedly arranged outside the sealing step 74.

[0038] Wherein, limiting protrusions 91 that can collide with the female terminal 11 for limiting are fixedly arranged on both sides of the male terminal 21; an extension area 92 is fixedly arranged at the right end of the male terminal 21 and is located on the right side of the two limiting protrusions 91; when the female terminal 11 and the male terminal 21 are inserted and mated, the extension area 92 is exposed to the outside; A condensate gas inlet 931 is fixedly arranged on the extension area 92, an inlet inner channel 932 communicating with the condensate gas inlet 931 is opened in the extension area 92, and a first inner tube 933 communicating the inlet inner channel 932 and the condensate gas inlet channel 62 is arranged in the cavity 23; A condensate gas discharge port 941 is also fixedly arranged on the extension area 92, a discharge inner channel 942 communicating with the condensate gas discharge port 941 is opened in the extension area 92, and a second inner tube 943 communicating the discharge inner channel 942 and the condensate gas outlet channel 63 is arranged in the cavity 23; a sealing plugging block for sealing it is detachably arranged at the condensate gas discharge port 941.

[0039] This embodiment also discloses a production method of a terminal connector, including the following steps: The female terminal 11 and the male terminal 21 are produced by an injection molding process; The female terminal 11 and the male terminal 21 are surface sprayed or treated to enhance their anti-slip performance; The internal structures of the female terminal 11 and the male terminal 21 are assembled through an automatic assembly line; The produced female terminal 11 and male terminal 21 are subjected to 100% full inspection and random sampling to ensure that the qualified rate reaches the preset standard.

[0040] The working principle of this embodiment is as follows: In the initial state: 1. The first return spring 36 provides the kinetic energy for the two rigid bearing sections 32 to rotate inwards, so that the flexible damping section 33 will be away from the abutting concave surface 14 in the initial state, facilitating the insertion and mating operation of the male terminal 21 and the female terminal 11.

[0041] 2. The second return spring 52 provides the kinetic energy for the two passive top blocks 44 to move inwards, so that the two flexible top blocks 48 will not contact the corresponding tips 49, avoiding hindering the inward movement of the flexible damping section 33.

[0042] 3. In the initial state, the sealing top block 72 is elastically forced by the sealing spring 73 and tightly abuts against the sealing step 74, thereby maintaining the state of separating the condensate gas inlet passage 62 and the condensate gas outlet passage 63.

[0043] 4. A sealing plug block is provided at the condensate gas discharge port 941.

[0044] When inserting and mating the female terminal block 11 and the male terminal block 21: 1. Insert the male terminal block 21 into the female terminal block 11, and the limiting convex block 91 will collide with the female terminal block 11 for limiting; at this time, each metal contact pin 12 will be inserted into the corresponding metal contact seat 22 to form an electrical connection.

[0045] 2. The double-end tightening unit will extend into the insertion slot 13 accordingly.

[0046] 3. Align and insert the external pipe for transporting condensate gas into the condensate gas inlet 931. The condensate gas can enter the inner passage 932 and the first inner pipe 933 and then be sent into the condensate gas inlet passage 62. Then, the condensate gas can push the sealing top block 72 to move inward, so that the condensate gas inlet passage 62 and the condensate gas outlet passage 63 are connected; as the condensate gas is continuously sent in, the condensate gas will fill the expansion gas chamber 53, and the expansion gas chamber 53 will expand, causing the two passive top blocks 44 to move outward. The two flexible top blocks 48 will respectively abut against the corresponding tips 49 and then push the two rigid bearing sections 32 to rotate outward; so that the two flexible damping sections 33 can tightly adhere to the corresponding abutting concave surfaces 14 and generate friction, achieving the purpose of firmly inserting and mating the male terminal block 21 and the female terminal block 11.

[0047] When it is necessary to separate the female terminal block 11 and the male terminal block 21: 1. Pull out the sealing plug block from the condensate gas discharge port 941; the condensate gas in the expansion gas chamber 53 can be discharged through the condensate gas outlet passage 63, the second inner pipe 943 and the discharge inner passage 942 to the condensate gas discharge port 941.

[0048] 2. The two rigid bearing sections 32 rotate inward under the kinetic energy of the first return spring 36, so that the flexible damping sections 33 will be away from the abutting concave surfaces 14 in the initial state, facilitating the application of force to pull out the male terminal block 21; 3. The two passive top blocks 44 move inward under the kinetic energy of the second return spring 52, so that the two flexible top blocks 48 do not contact the corresponding tips 49, avoiding hindering the inward movement of the flexible damping sections 33.

[0049] 4. Just pull out the male terminal block 21.

[0050] This specific embodiment is only an interpretation of the present invention and is not a limitation thereof. After reading this specification, those skilled in the art may make modifications to this embodiment that do not contribute creatively, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A terminal connector, comprising a mating female terminal (11) and a sub-terminal (21), wherein the female terminal (11) is provided with a plurality of horizontal metal contact pins (12) penetrating the inside and outside thereof, and the sub-terminal (21) is fixedly provided with a plurality of metal contact seats (22) whose number is the same as the metal contact pins (12); after the female terminal (11) and the sub-terminal (21) are mated, each of the metal contact pins (12) will be inserted into the corresponding metal contact seat (22) to form an electrical connection; characterized in that: The female terminal (11) is provided with a plug-in slot (13), each of the metal contact pins (12) can extend into the plug-in slot (13), and opposite sides of the plug-in slot (13) are provided with abutting concave surfaces (14); The sub-connecting terminal (21) has an opening (23) inside, and a double-end pressing unit is arranged in the opening (23). After the sub-connecting terminal (21) is plugged into the mother connecting terminal (11), the double-end pressing unit will extend into the plug-in slot (13), and the double-end pressing unit can be tightly attached to the two pressing concave surfaces (14) after receiving the supplied power and generate friction force, so that the sub-connecting terminal (21) is firmly plugged into the mother connecting terminal (11); The open cavity (23) is also provided with a power supply module, and the power supply module can supply power to the double-end abutment unit.

2. A terminal connector according to claim 1, characterized in that: The power supplied by the power supply module is condensed gas; The power supply module can seal itself after supplying condensed gas to the double-end abutment unit to prevent leakage of the condensed gas received by the double-end abutment unit; the double-end abutment unit is a gas-driven structure, and the double-end abutment unit can maintain a state of being tightly attached to the two abutment concave surfaces (14) and generating friction based on the received condensed gas.

3. A terminal connector according to claim 2, characterized in that: The double-end abutment unit comprises two groups of abutment actuators symmetrically arranged along the central axis of the opening (23); the two groups of abutment actuators each comprise a fixed-point rotating shaft (31) rotatably arranged in the opening (23), an arc-shaped hard bearing section (32) being fixedly arranged on the fixed-point rotating shaft (31), and the fixed-point rotating shaft (31) being fixed to the right end of the hard bearing section (32); a flexible damping section (33) being fixedly arranged on the outer side of the hard bearing section (32), and as the hard bearing section (32) rotates outward, the flexible damping section (33) can be tightly attached to the corresponding abutting concave surface (14) and generate friction force; Both sides of the sub-connection terminal (21) are provided with abutment openings (34) for the corresponding flexible damping sections (33) to extend out of the openings (23); A first clamping block (35) is fixedly arranged on the inner side of the two rigid bearing sections (32), and a first return spring (36) is arranged between the two first clamping blocks (35). Based on the return force of the first return spring (36), the two rigid bearing sections (32) have kinetic energy to rotate inwards.

4. A terminal connector according to claim 3, characterized in that: The double-end abutment unit comprises a main inner shell (41), the central axis of the main inner shell (41) coincides with the central axis of the opening (23), the main inner shell (41) has a travel inner cavity (42) inside, and both sides of the main inner shell (41) have openings (43) connected to the travel inner cavity (42); two groups of single-end actuators are arranged in the main inner shell (41) and are symmetrically arranged along the central axis of the main inner shell (41); the two groups of single-end actuators each comprise a passive top block (44), and the passive top block (44) can move outward or inward in the travel inner cavity (42); the passive top block An ejection block (45) is fixedly arranged on the outer side of the travel cavity (44); the passive ejection block (44) matches the cross-sectional width of the travel cavity (42); a limit contact block (46) is fixedly arranged at a position close to the opening (43) of the travel cavity (42); the limit contact block (46) can collide with the passive ejection block (44) to achieve the purpose of limiting; an ejection gap (47) is provided between the limit contact block (46) and the side wall of the travel cavity (42); the ejection block (45) can extend into the ejection gap (47); a flexible ejection block (48) with a semicircular cross-sectional shape is fixedly arranged on the outer side of the ejection block (45); The left end of the rigid bearing section (32) is fixedly provided with a tip (49), and the tip (49) will remain extended into the corresponding opening (43) of the travel cavity (42) under the reset force of the first reset spring (36); when the travel cavity (42) receives condensed gas, it will push the two flexible top blocks (48) to move outward, and the two flexible top blocks (48) will respectively press on the corresponding tips (49), and then push the two rigid bearing sections (32) to rotate outward.

5. A terminal connector according to claim 4, characterized in that: A second clamping block (51) is fixedly arranged on the inner side of the two passive top blocks (44), and a second return spring (52) is arranged between the two second clamping blocks (51). Based on the return force of the second return spring (52), the two passive top blocks (44) have kinetic energy to move inwards; An expansion air cavity (53) for receiving condensed air is formed between the two passive top blocks (44).

6. A terminal connector according to claim 5, characterized in that: The double-end abutment unit further comprises a secondary shell (61) for fixing the right end of the main inner shell (41); a condensation gas inlet (62) and a condensation gas outlet (63) are provided in the secondary shell (61); the condensation gas outlet (63) is communicated with the expansion gas cavity (53); The auxiliary shell (61) is also provided with a sealed inner cavity (71), and a sealed top block (72) and a sealing spring (73) are arranged in the sealed inner cavity (71); the condensing gas inlet (62) is located outside the sealed inner cavity (71), and the condensing gas outlet (63) is located at the right end of the sealed inner cavity (71); and a sealing step (74) is provided in the auxiliary shell (61); based on the elastic force of the sealing spring (73), the sealing top block (72) has kinetic energy to be tightly against the sealing step (74), and when the sealing top block (72) is tightly against the sealing step (74), the sealing top block (72) will separate the condensing gas inlet (62) and the condensing gas outlet (63), and at the same time, the condensing gas outlet (63) will be sealed by the sealing top block (72); An internal block (75) for the sealing spring (73) to be sleeved is fixedly arranged on the inner side of the sealing inner cavity (71), and the internal block (75) can collide with the sealing top block (72) to prevent the sealing spring (73) from being squeezed and damaged.

7. A terminal connector according to claim 6, characterized in that: Auxiliary sealing rings (81) are fixedly arranged at the left and right ends of the sealing step (74), and a main sealing ring (82) is fixedly arranged at the outer side of the sealing step (74).

8. A terminal connector according to claim 6, characterized in that: Both sides of the sub-connection terminal (21) are fixedly provided with limiting protrusions (91) that can contact with the mother connection terminal (11) to limit the position; the right end of the sub-connection terminal (21) is fixedly provided with an extension area (92) located on the right side of the two limiting protrusions (91); when the mother connection terminal (11) and the sub-connection terminal (21) are plugged together, the extension area (92) is exposed to the outside; A condensation gas inlet (931) is fixedly arranged on the extension area (92), an inner entrance passage (932) communicating with the condensation gas inlet (931) is provided in the extension area (92), and a first inner tube (933) communicating with the inner entrance passage (932) and the condensation gas inlet passage (62) is provided in the open cavity (23); A condensate outlet (941) is also fixedly provided on the extension area (92), an inner discharge channel (942) connected to the condensate outlet (941) is provided in the extension area (92), and a second inner tube (943) connecting the inner discharge channel (942) and the condensate outlet channel (63) is provided in the opening (23); the condensate outlet (941) is detachably provided with a sealing plug block for sealing it.

9. A method for producing a terminal connector, applied to the terminal connector according to any one of claims 1 to 8, characterized in that: The following steps are included: The female terminal block (11) and the sub-terminal block (21) are produced by injection molding process; The surface of the female terminal (11) and the sub-terminal (21) is sprayed or treated to enhance the anti-slip performance; Assembling the internal structures of the female terminal block (11) and the sub-terminal block (21) through an automated assembly line; The mother terminals (11) and the sub-terminals (21) that have been produced are subjected to 100% full inspection and random sampling to ensure that the qualified rate reaches the preset standard.

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