A new type of fixing device for charging connector terminal

Abstract

The application relates to the technical field of connector terminals, in particular to a novel fixing device of a charging connector terminal, which comprises a wiring terminal and an interface, a fixing mechanism is arranged on the wiring terminal and the interface, the fixing mechanism comprises a moving piece fixedly sleeved on the wiring terminal, a fixing piece is sleeved on the interface, four connecting rods are arranged between the moving piece and the fixing piece, and the connecting rods are slidingly connected in the moving piece; the fixing device has the beneficial effects that the moving piece is connected with the wiring terminal through the arrangement of the fixing mechanism, the fixing piece is connected with the interface, the moving piece is connected with the fixing piece through the connecting rods, the wiring terminal corresponds to the interface, the moving piece can slide along the connecting rods through the sliding connection between the connecting rods and the moving piece, the wiring terminal can be inserted into the interface, and the wiring terminal can be connected with or disconnected from the interface under the movement of the moving piece.

Description

Technical Field

[0001] This invention relates to the field of connector terminal technology, and more specifically to a novel fixing device for charging connector terminals. Background Technology

[0002] Wire connector terminals are critical components in electrical connection systems, ensuring reliable electrical contact between wires, between wires and equipment, or between wires and circuit boards. Terminals are typically made of metal, designed with specific shapes and sizes to suit various application requirements, and often include insulation to prevent short circuits and other safety hazards. Here is some important information about wire connector terminals: The main functions of wire connector terminals include: Electrical connection: Providing a stable and low-resistance current transmission path, ensuring efficient transmission of power or signals from one point to another. Mechanical fixing: Securely fixing the wire to the terminal using physical methods (such as crimping, welding, screw fastening, etc.) to prevent loosening or detachment. Protection: Some terminals are designed with protective structures to protect the internal electrical connection from external environmental factors such as dust, moisture, and chemicals.

[0003] Existing charging connector terminal fixing devices can only secure the terminals to the interface through a single mechanical mechanism to ensure connection stability. However, in case of an emergency requiring disconnection, they cannot promptly disconnect the terminals from the interface, hindering timely response in emergencies. For example, Chinese patent application CN201811033372.9 discloses a connection device for connecting wire and fiber optic cables, which includes a first outer nest, a second outer nest, and a connecting shell. This device can connect two sections of wire or fiber optic cable and secure them with a first clamp and a second clamp, making the connection more convenient and robust. Although this technical solution can fix the terminals to the interface, it still cannot promptly disconnect the terminals from the interface in an emergency.

[0004] Therefore, a new type of fixing device for charging connector terminals is needed to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problem, namely the inability of existing fixing devices to promptly disconnect the connection terminals from the interface, this invention provides a novel fixing device for charging connector terminals.

[0006] A novel fixing device for charging connector terminals includes a terminal block and an interface. A fixing mechanism is provided on the terminal block and the interface. The fixing mechanism includes a movable part fixedly sleeved on the terminal block and a fixing part sleeved on the interface. Four connecting rods are provided between the movable part and the fixing part. The connecting rods are slidably connected in the movable part. The plug on the terminal block corresponds to the socket on the interface.

[0007] Specifically, in use, the movable part is fixedly fitted onto the terminal block. Then, the plug on the terminal block is aligned with the socket on the interface, and the fixed part is fitted onto the interface and fixed to the interface. Then, the movable part is slid along the connecting rod, moving closer to the fixed part. At the same time, the movable part moves the terminal block toward the interface, so that the plug on the terminal block is inserted into the socket on the interface. After the terminal block is connected to the interface, the movable part is stopped.

[0008] By setting up a fixing mechanism, the moving part can be connected to the terminal block, and the fixing part can be connected to the interface. The moving part and the fixing part are connected by a connecting rod, so that the terminal block corresponds to the interface, thereby fixing the interface and the terminal block. Furthermore, by sliding the connecting rod and the moving part, the moving part can slide along the connecting rod, allowing the terminal block to be inserted into the interface. Thus, the terminal block can be connected and disconnected from the interface as the moving part moves.

[0009] Preferably, the movable component includes a mounting frame fixedly sleeved on the terminal block. An air cavity is provided in the mounting frame. An air inlet pipe and an air outlet pipe are respectively connected to both ends of the side wall of the air cavity away from the fixed component. A movable plate is slidably connected in the air cavity. Four first springs are connected between the movable plate and the side wall of the air cavity away from the fixed component. Four connecting holes are provided in the side wall of the air cavity near the fixed component. Four connecting rods correspond to the four connecting holes. The four connecting rods enter the air cavity through the connecting holes. The connecting rods are fixedly connected to the movable plate.

[0010] Furthermore, an air hole is provided on one side wall of the air cavity near the fixing member, and the air hole is connected to the external space.

[0011] Specifically, in the initial state, when the first spring is in its natural state, the moving plate is located on the side of the air chamber closer to the fixed part. When it is necessary to insert the wiring terminal into the interface, air is drawn into the air chamber through the air outlet pipe while the air inlet pipe is closed. Under the action of external air pressure, the moving plate causes the mounting frame to move closer to the interface. The mounting frame drives the wiring terminal to move closer to the interface, while compressing the first spring, so that the wiring terminal is inserted into the interface. When it is necessary to disconnect the wiring terminal from the interface, air is injected into the air chamber through the air inlet pipe while the air outlet pipe is closed. Under the action of air pressure in the air chamber and the action of the first spring, the mounting frame moves away from the fixed part. The mounting frame drives the wiring terminal to be pulled out of the interface, so that the wiring terminal is disconnected from the interface.

[0012] By incorporating movable components, the mounting frame can be moved by evacuating and deflating the air chamber, thereby moving the wiring terminals. This allows for the connection and disconnection of the wiring terminals from the interface, enabling timely disconnection of the wiring terminals from the interface in emergency situations.

[0013] Preferably, the fixing component includes a fixing frame, which is sleeved on the interface. The inner circumferential surface of the fixing frame has an opening facing the interface, and an airbag is fixedly connected in the mounting groove. An air groove is provided in the connecting rod, one end of the air groove is connected to the air cavity, and the other end of the air groove is connected to the airbag. A solenoid valve is provided in the air groove.

[0014] Specifically, when using the device, if it needs to be fixed to the interface, open the solenoid valve and inflate the air chamber through the air inlet pipe while closing the air outlet pipe. This allows the gas in the air chamber to enter the air groove through the solenoid valve, and then the gas enters the air bladder through the air groove, causing the air bladder to inflate and clamp the interface. After the air bladder inflates, close the solenoid valve.

[0015] By inflating the air chamber, the airbag expands and clamps the interface, thus fixing the fixing component to the interface. This facilitates the movement of subsequent moving parts, allowing for connection and disconnection of the wiring terminals and the interface. Furthermore, this design eliminates the need for interface modifications, enhancing the adaptability of the device and facilitating its application to existing equipment.

[0016] Furthermore, solenoid valves are existing technology and will not be discussed further.

[0017] Preferably, four retaining members are evenly arranged between the moving member and the fixing member. Each retaining member includes a retaining rod fixedly connected to the mounting frame. The end of the retaining rod near the fixing member has a downward-facing insertion groove. A locking block is slidably connected in the insertion groove. A second spring is connected between the locking block and the insertion groove. The lower end of the side of the locking block near the fixing member has a chamfer. The fixing frame has a slot with an opening facing the moving member. The slot communicates with the mounting groove, and the retaining rod can be inserted into the slot.

[0018] Furthermore, the card block can abut against the side wall of the card slot near the moving part.

[0019] Specifically, during use, when the terminal block is inserted into the interface, the retaining rod is inserted into the slot. During the insertion of the retaining rod into the latch, the chamfer of the locking block first abuts against the opening of the slot. Under the action of the slot opening, the locking block compresses the second spring and enters the embedding groove. After the locking block enters the slot, it pops out of the embedding groove under the elastic force of the second spring, and the locking block abuts against the side wall of the slot near the moving part. When it is necessary to disconnect the terminal block from the interface, the solenoid valve is opened, and the airbag continues to inflate, causing the airbag to continue to expand. The airbag pushes the locking block upward, and the locking block compresses the second spring and enters the embedding groove, releasing the limit on the retaining rod. This allows the mounting frame to reset under the action of the first spring, thus disconnecting the terminal block from the interface.

[0020] By setting up the retaining element, after the terminal block is connected to the interface, the retaining element keeps the connection between the terminal block and the interface fixed, thereby eliminating the negative pressure state formed by the external air source device on the air chamber; and by the continued expansion of the air bladder, the locking block can be released from the limit of the retaining rod, making it convenient to disconnect the terminal block from the interface.

[0021] Preferably, the movable component further includes a limiting ring fixedly connected to the inner wall of the air cavity, and the movable plate can abut against the limiting ring.

[0022] Specifically, during use, when the wiring terminal is connected to the interface, the moving plate abuts against the limit ring; during use, low-temperature gas is delivered into the air chamber through the air inlet pipe, and the wiring terminal is cooled through the air chamber. The cooled gas is discharged through the air outlet pipe.

[0023] By setting the limiting ring, a certain cooling space can be formed in the air cavity after the terminal block is connected to the interface, so that low temperature gas can enter the cooling space from the air inlet pipe to cool the terminal block.

[0024] Furthermore, a connecting plate is fixedly connected to the end of the interface away from the terminal block, and the connecting plate is fixedly connected to the electronic device.

[0025] Furthermore, a cable is connected to the end of the terminal block away from the interface, and a plug is provided at the end of the terminal block closer to the interface.

[0026] Furthermore, the outer surface of the interface is made of rubber material.

[0027] By making the outer surface of the interface with rubber material, the friction between the airbag and the interface is increased, making the airbag clamp the interface more stably.

[0028] Furthermore, the air inlet pipe and the air outlet pipe are respectively connected to an air pump.

[0029] Furthermore, the air pump is existing technology and will not be discussed further.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. By setting up a fixing mechanism, the moving part can be connected to the terminal block, and the fixing part can be connected to the interface. The moving part and the fixing part are connected by a connecting rod, so that the terminal block corresponds to the interface, thereby fixing the interface and the terminal block. Furthermore, by sliding the connecting rod and the moving part, the moving part can slide along the connecting rod, allowing the terminal block to be inserted into the interface. Thus, the terminal block can be connected and disconnected from the interface as the moving part moves.

[0032] 2. By setting up the movable parts, the installation frame can be moved by evacuating and venting the air chamber, thereby moving the wiring terminals and enabling the wiring terminals to be connected to and disconnected from the interface. This allows the wiring terminals to be disconnected from the interface in a timely manner in case of an emergency.

[0033] 3. By setting up the fixing component, the air chamber is inflated, causing the airbag to expand and clamp the interface, thereby fixing the fixing component to the interface. This facilitates the movement of the moving component, the connection and disconnection of the wiring terminal and the interface. Furthermore, this setting eliminates the need to modify the interface, improving the adaptability of the device and facilitating its application to existing equipment.

[0034] 4. By setting up the retaining element, after the wiring terminal is connected to the interface, the retaining element keeps the connection between the wiring terminal and the interface fixed, thereby eliminating the negative pressure state formed by the external air source device on the air chamber; and by the continued expansion of the air bladder, the locking block can be released from the limit of the retaining rod, making it convenient to disconnect the wiring terminal from the interface.

[0035] 5. By setting the limit ring, a certain cooling space can be formed in the air cavity after the terminal block is connected to the interface, so that low temperature gas can enter the cooling space from the air inlet pipe to cool the terminal block. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0037] Figure 2 This is a schematic diagram of the working state of the present invention. Figure 1 ;

[0038] Figure 3 This is a schematic diagram of the working state of the present invention. Figure 2 ;

[0039] Figure 4 For the present invention Figure 3 The main view;

[0040] Figure 5 For the present invention Figure 4 Isometric side sectional view at point AA;

[0041] Figure 6 For the present invention Figure 4 Isometric side sectional view at point BB;

[0042] Figure 7 For the present invention Figure 5 A magnified view of a section at point C;

[0043] Figure 8 For the present invention Figure 6 A magnified view of a section at point D;

[0044] Figure 9 For the present invention Figure 3 The left view;

[0045] Figure 10 For the present invention Figure 9 Isometric side section view at EE.

[0046] In the picture:

[0047] 1. Terminal block; 2. Interface;

[0048] 3. Fixing mechanism; 31. Moving part; 311. Mounting frame; 312. Air chamber; 313. Air inlet pipe; 314. Air outlet pipe; 315. Moving plate; 316. First spring; 317. Connecting hole; 318. Limiting ring; 32. Fixing part; 321. Fixing frame; 322. Mounting groove; 323. Airbag; 324. Air groove; 325. Solenoid valve; 33. Connecting rod; 34. Holding part; 341. Holding rod; 342. Embedded groove; 343. Locking block; 344. Second spring; 345. Locking slot. Detailed Implementation

[0049] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0050] like Figure 1 , 2 As shown in Figure 3, this embodiment of the invention discloses a novel fixing device for charging connector terminals, including a terminal block 1 and an interface 2. A fixing mechanism 3 is provided on the terminal block 1 and the interface 2. The fixing mechanism 3 includes a movable part 31 fixedly sleeved on the terminal block 1, and a fixing part 32 sleeved on the interface 2. Four connecting rods 33 are provided between the movable part 31 and the fixing part 32. The connecting rods 33 are slidably connected in the movable part 31. The plug on the terminal block 1 corresponds to the socket on the interface 2.

[0051] Specifically, in use, the movable part 31 is fixedly sleeved on the terminal block 1. Then, the plug on the terminal block 1 is aligned with the socket on the interface 2. At the same time, the fixed part 32 is sleeved on the interface 2 and fixed to the interface 2. Then, the movable part 31 is slid, so that the movable part 31 slides on the connecting rod 33, so that the movable part 31 moves closer to the fixed part 32. At the same time, the movable part 31 drives the terminal block 1 to move towards the interface 2, so that the plug on the terminal block 1 is inserted into the socket on the interface 2. After the terminal block 1 and the interface 2 are connected, the movable part 31 is stopped.

[0052] By setting the fixing mechanism 3, the movable part 31 can be connected to the terminal 1, and the fixing part 32 can be connected to the interface 2. The movable part 31 and the fixing part 32 are connected by the connecting rod 33, so that the terminal 1 corresponds to the interface 2, thereby fixing the interface 2 and the terminal 1. Furthermore, by sliding the connecting rod 33 and the movable part 31, the movable part 31 can slide along the connecting rod 33, so that the terminal 1 can be inserted into the interface 2. Thus, the terminal 1 can be connected and disconnected from the interface 2 by the movement of the movable part 31.

[0053] like Figure 4 , 5As shown in Figure 6, the movable component 31 includes a mounting frame 311 fixedly sleeved on the terminal block 1. An air chamber 312 is provided in the mounting frame 311. An air inlet pipe 313 and an air outlet pipe 314 are respectively connected to both ends of the side wall of the air chamber 312 away from the fixed component 32. A movable plate 315 is slidably connected in the air chamber 312. Four first springs 316 are connected between the movable plate 315 and the side wall of the air chamber 312 away from the fixed component 32. Four connecting holes 317 are provided on the side wall of the air chamber 312 near the fixed component 32. Four connecting rods 33 correspond to the four connecting holes 317. The four connecting rods 33 enter the air chamber 312 through the connecting holes 317. The connecting rods 33 are fixedly connected to the movable plate 315.

[0054] Furthermore, an air hole is provided on one side wall of the air cavity 312 near the fixing member 32, and the air hole is connected to the external space.

[0055] Specifically, in the initial state, when the first spring 316 is in its natural state, the moving plate 315 is located on the side of the air chamber 312 closer to the fixing member 32. When it is necessary to insert the terminal 1 into the interface 2, air is drawn from the air chamber 312 through the air outlet pipe 314, while the air inlet pipe 313 is closed. Under the action of external air pressure, the moving plate 315 causes the mounting frame 311 to move closer to the interface 2. The mounting frame 311 drives the terminal 1 to move closer to the interface 2, while compressing the first spring 316, so that the terminal 1 is inserted into the interface 2. When it is necessary to disconnect the terminal 1 from the interface 2, air is injected into the air chamber 312 through the air inlet pipe 314, while the air outlet pipe 313 is closed. Under the action of air pressure in the air chamber 312 and the action of the first spring 316, the mounting frame 311 moves away from the fixing member 32. The mounting frame 311 drives the terminal 1 to be pulled out of the interface 2, so that the terminal 1 is disconnected from the interface 2.

[0056] By setting the movable part 31, the mounting frame 311 can be moved by evacuating and de-escalating the air chamber 312, thereby moving the terminal block 1 and enabling the connection and disconnection of the terminal block 1 and the interface 2. This allows the terminal block to be disconnected from the interface 2 in a timely manner in an emergency.

[0057] like Figure 5 , 7As shown in Figure 10, the fixing component 32 includes a fixing frame 321, which is sleeved on the interface 2. The inner ring surface of the fixing frame 321 has an opening facing the interface 2, and an airbag 323 is fixedly connected in the mounting groove 322. An air groove 324 is provided in the connecting rod 33. One end of the air groove 324 is connected to the air cavity 312, and the other end of the air groove 324 is connected to the airbag 323. A solenoid valve 325 is provided in the air groove 324.

[0058] Specifically, during use, when the fastener 32 needs to be fixed to the interface 2, the solenoid valve 325 is opened, and air is injected into the air chamber 312 through the air inlet pipe 313. At the same time, the air outlet pipe 314 is closed, so that the gas in the air chamber 312 enters the air groove 324 through the solenoid valve 325. Then the gas enters the air bag 323 through the air groove 324, causing the air bag 323 to inflate and clamp the interface 2. After the air bag 323 inflates, the solenoid valve 325 is closed.

[0059] By setting the fixing member 32, the air chamber 312 is inflated, causing the air bag 323 to expand and clamp the interface 2, thereby fixing the fixing member 32 to the interface 2. This facilitates the subsequent movement of the moving member 31, allowing the wiring terminal 1 to be connected to and disconnected from the interface 2. Furthermore, this setting eliminates the need to modify the interface 2, improving the adaptability of the device and facilitating its application to existing equipment.

[0060] Furthermore, the solenoid valve 325 is existing technology and will not be described in detail.

[0061] like Figure 1 , 2 As shown in Figures 6 and 8, four retaining members 34 are evenly arranged between the moving member 31 and the fixing member 32. Each retaining member 34 includes a retaining rod 341 fixedly connected to the mounting frame 311. The end of the retaining rod 341 near the fixing member 32 has a downward-facing insertion groove 342. A locking block 343 is slidably connected in the insertion groove 342. A second spring 344 is connected between the locking block 343 and the insertion groove 342. The lower end of the side of the locking block 343 near the fixing member 32 has a chamfer. The fixing frame 321 has a slot 345 with an opening facing the moving member 31. The slot 345 communicates with the mounting groove 322, and the retaining rod 341 can be inserted into the slot 345.

[0062] Furthermore, the card block 343 can abut against the side wall of the card slot 345 near the moving member 31.

[0063] Specifically, in use, when terminal 1 is inserted into interface 2, retaining rod 341 is inserted into slot 345. During the insertion of retaining rod 341 into latch 345, the chamfer of latch block 343 first abuts against the opening of slot 345. Under the action of abutting against the opening of slot 345, latch block 343 compresses second spring 344 and enters into insertion groove 342. After latch block 343 enters slot 345, it exits from insertion groove 342 under the elastic force of second spring 344. When the card pops out, the locking block 343 abuts against the side wall of the slot 345 near the moving part 31. When it is necessary to disconnect the terminal 1 from the interface 2, the solenoid valve 325 is opened to continue inflating the airbag 323, causing the airbag 323 to continue to expand. The airbag 323 pushes the locking block 343 upward, and the locking block 343 compresses the second spring 344 and enters the embedded groove 342, releasing the limit on the retaining rod 341. This allows the mounting frame 311 to reset under the action of the first spring 316, thus disconnecting the terminal 1 from the interface 2.

[0064] By setting the retaining member 34, after the terminal 1 is connected to the interface 2, the retaining member 34 keeps the connection between the terminal 1 and the interface 2 fixed, thereby eliminating the negative pressure state formed by the external air source device on the air chamber 312; and by the continued expansion of the air bag 323, the limiting of the retaining rod 341 by the locking block 343 can be released, making it convenient to disconnect the terminal 1 from the interface 2.

[0065] like Figure 5 , 6 As shown in Figures 7 and 8, the movable component 31 also includes a limiting ring 318 fixedly connected to the inner wall of the air cavity 312, and the movable plate 315 can abut against the limiting ring 318.

[0066] Specifically, during use, when terminal 1 is connected to interface 2, the moving plate 315 abuts against the limiting ring 318; during use, low-temperature gas is delivered to the air chamber 312 through the air inlet pipe 313, and the air chamber 312 cools down terminal 1, and the cooled gas is discharged through the air outlet pipe 314.

[0067] By setting the limiting ring 318, a certain cooling space can be formed in the air cavity 312 after the terminal 1 is connected to the interface 2, so that the low temperature gas can enter the cooling space from the air inlet pipe 313 to cool the terminal 1.

[0068] Furthermore, a connecting plate is fixedly connected to the end of the interface 2 away from the terminal block 1, and the connecting plate is fixedly connected to the electronic device.

[0069] Furthermore, a cable is connected to the end of the terminal block 1 away from the interface 2, and a plug is provided at the end of the terminal block 1 near the interface 2.

[0070] Furthermore, the outer surface of the interface 2 is made of rubber material.

[0071] By making the outer surface of interface 2 a rubber material, the friction between airbag 323 and interface 2 is increased, making the clamping of airbag 323 on interface 2 more stable.

[0072] Furthermore, the air inlet pipe 313 and the air outlet pipe 314 are respectively connected to the air pump.

[0073] Furthermore, the air pump is existing technology and will not be discussed further.

[0074] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0075] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0077] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A fixing device for charging connector terminals, characterized in that, The device includes a terminal block (1) and an interface (2). A fixing mechanism (3) is provided on the terminal block (1) and the interface (2). The fixing mechanism (3) includes a movable part (31) fixedly sleeved on the terminal block (1). A fixing part (32) is sleeved on the interface (2). Four connecting rods (33) are provided between the movable part (31) and the fixing part (32). The connecting rods (33) are slidably connected in the movable part (31). The plug on the terminal block (1) corresponds to the socket on the interface (2). The movable component (31) includes a mounting frame (311) fixedly sleeved on the terminal block (1). An air chamber (312) is provided in the mounting frame (311). An air inlet pipe (313) and an air outlet pipe (314) are respectively connected to the two ends of the side wall of the air chamber (312) away from the fixed component (32). A movable plate (315) is slidably connected in the air chamber (312). Four first springs (316) are connected between the movable plate (315) and the side wall of the air chamber (312) away from the fixed component (32). Four connecting holes (317) are provided on the side wall of the air chamber (312) near the fixed component (32). Four connecting rods (33) correspond to the four connecting holes (317). The four connecting rods (33) enter the air chamber (312) through the connecting holes (317). The connecting rods (33) are fixedly connected to the movable plate (315).

2. The fixing device for a charging connector terminal according to claim 1, characterized in that, The air cavity (312) has an air hole connected to the side wall near the fixing member (32), and the air hole is connected to the external space.

3. The fixing device for a charging connector terminal according to claim 2, characterized in that, The fixing component (32) includes a fixing frame (321), which is sleeved on the interface (2). The inner ring surface of the fixing frame (321) has an opening facing the interface (2) and an airbag (323) is fixedly connected in the mounting groove (322). An air groove (324) is provided in the connecting rod (33). One end of the air groove (324) is connected to the air chamber (312) and the other end of the air groove (324) is connected to the airbag (323). A solenoid valve (325) is provided in the air groove (324).

4. The fixing device for a charging connector terminal according to claim 3, characterized in that, Four retaining members (34) are evenly arranged between the movable member (31) and the fixed member (32). Each retaining member (34) includes a retaining rod (341) fixedly connected to the mounting frame (311). The retaining rod (341) has an opening-downward-facing insertion groove (342) at one end near the fixed member (32). A locking block (343) is slidably connected in the insertion groove (342). A second spring (344) is connected between the locking block (343) and the insertion groove (342). The lower end of the side of the locking block (343) near the fixed member (32) is chamfered. The fixed frame (321) has a slot (345) with an opening facing the movable member (31). The slot (345) communicates with the mounting groove (322). The retaining rod (341) can be inserted into the slot (345).

5. The fixing device for a charging connector terminal according to claim 4, characterized in that, The card block (343) can abut against the side wall of the card slot (345) near the moving part (31).

6. The fixing device for a charging connector terminal according to claim 5, characterized in that, The movable component (31) also includes a limiting ring (318) fixedly connected to the inner wall of the air cavity (312), and the movable plate (315) can abut against the limiting ring (318).

7. The fixing device for a charging connector terminal according to claim 6, characterized in that, A connecting plate is fixedly connected to the end of the interface (2) away from the terminal block (1), and the connecting plate is fixedly connected to the electronic device.

8. The fixing device for a charging connector terminal according to claim 7, characterized in that, The outer surface of the interface (2) is made of rubber material.

9. A fixing device for a charging connector terminal according to claim 8, characterized in that, The air inlet pipe (313) and the air outlet pipe (314) are respectively connected to the air pump.

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