Anti-loosening electric power supply plug device

Abstract

The present invention relates to the field of electric power supply, and in particular to an anti-loosening electric power supply plug device, comprising a plug and a socket, wherein the plug has a pin, and the socket has a jack, and the pin of the plug is inserted into the jack of the socket for power transmission; and further comprising: a limit plate, wherein the limit plate and the pin slide against each other; a multi-stage spring telescopic rod, wherein a plurality of multi-stage spring telescopic rods are installed between the limit plate and the plug; and a small accordion protective cover, wherein a small accordion protective cover is installed at the edge between the limit plate and the plug, and the pin is covered by the limit plate and the small accordion protective cover. The present invention wraps the pin of the plug in the limit plate and the small accordion protective cover to reduce bumps and dust adhesion during daily transfer and placement.

Description

Technical Field

[0001] The invention relates to the field of electric power supply, and in particular to an anti-loosening electric power supply plug-in device. Background Art

[0002] At present, power supply devices are often used in the electric power field. In a first-line electric power device, power is often supplied to electric components in the electric power device by connecting a plug and a socket.

[0003] For example, Chinese patent CN116565626A discloses a high-voltage power equipment power supply docking system, which uses a wedge-shaped block snap-fit ​​structure to fix the plug and the socket, and uses a piston structure to absorb air at the joint position of the plug and the socket to reduce arc ignition, and uses protective gas to prevent fire. However, it still has the following defects:

[0004] 1. The pin structure of the plug is exposed outside, which is easy to be damaged by bumps during daily movement and placement and insertion into the socket, and is also easy to be contaminated by dust. The prior art lacks corresponding protective measures.

[0005] 2. The locking and anti-loosening structure of the wedge block is not convenient in actual use. One hand is required to press the unlocking position at all times. If the user's hands are small and cannot cover the unlocking positions on both sides of the socket, the plug cannot be directly unplugged.

[0006] 3. The air extraction structure is too complicated and is not suitable for simple plugging and unplugging of plugs and sockets. Summary of the invention

[0007] In order to overcome the shortcomings that the pin structure of the existing plug is exposed to the outside and is easily damaged, and the fixing structure of the existing plug and socket is not convenient, the present invention provides an anti-loosening electric power supply plug device.

[0008] Technical solution: An anti-loosening electric power supply plug device comprises a plug and a socket, wherein the plug has a pin, and the socket has a jack, and the pin of the plug is inserted into the jack of the socket for power transmission; it also comprises: a limit plate, wherein the limit plate and the pin slide with each other; a multi-stage spring telescopic rod, wherein a plurality of multi-stage spring telescopic rods are installed between the limit plate and the plug; and a small accordion protective cover, wherein a small accordion protective cover is installed at the edge between the limit plate and the plug, and the pin is covered by the limit plate and the small accordion protective cover.

[0009] More preferably, a limit frame is installed at the edge of one side of the socket, and the limit frame is used to guide and limit the limit plate.

[0010] More preferably, the plug is provided with two L-shaped plates, the two L-shaped plates are symmetrically distributed on both sides of the pin, the socket is provided with two symmetrically distributed grooves, the two grooves are distributed on both sides of the jack, the limit plate is provided with two symmetrically distributed through grooves, the grooves correspond to the through grooves in upper and lower positions, each of the grooves is rotatably connected with a hook plate, a torsion spring is installed on the rotating shaft of the hook plate, and the torsion spring makes the hook plate have a tendency to maintain a vertical state, and the through and damping spring on the socket is provided. The sliding type is provided with two symmetrically distributed T-shaped pressing plates, and the T-shaped pressing plates are used to push the upper part of the hook plate. After the L-shaped plate moves down through the through slot and enters the groove, the transverse plate structure of the L-shaped plate contacts the hook structure of the hook plate and rotates the hook plate. When the transverse plate structure of the L-shaped plate passes over the hook structure of the hook plate along the inclined surface of the hook structure of the hook plate, the hook plate is reset to a vertical shape under the rotation action of the torsion spring, so that the transverse plate structure of the L-shaped plate and the hook structure of the hook plate are engaged with each other.

[0011] More preferably, two symmetrically distributed extrusion rods are installed on the plug, and the two extrusion rods are distributed on both sides of the pin, a foldable airbag is installed in each of the grooves, the position of the foldable airbag corresponds to the position of the extrusion rod up and down, an air inlet pipe is installed on one side of each of the foldable airbags, and the air inlet pipe passes through the jack, and an air outlet pipe is installed on the other side of each of the foldable airbags, and the air outlet pipe passes through the socket.

[0012] More preferably, each of the foldable airbags is installed with an elastic telescopic rod, and the telescopic end and the fixed end of the elastic telescopic rod are respectively connected to the top end and the bottom end of the foldable airbag.

[0013] More preferably, a temperature sensor is provided in the socket, and the temperature sensor is used to monitor whether there is abnormal temperature rise during use of the socket.

[0014] More preferably, a gas storage box is installed in each of the grooves, and an air outlet pipe 2 is installed at the air outlet of each of the gas storage boxes, and an air outlet pipe 3 is installed at one end of each of the air outlet pipes 2, and the air outlet pipe 3 penetrates into the socket. The gas storage box is filled with protective gas in a high-pressure state, and a small solenoid valve is installed at the air outlet of the gas storage box. When the temperature sensor in the socket detects abnormal temperature, it sends a signal to open the small solenoid valve at the air outlet of the gas storage box, and the protective gas enters the socket through the air outlet pipe 2 and the air outlet pipe 3.

[0015] More preferably, the protective gas in the gas storage box is an inert gas.

[0016] More preferably, a foldable airbag 2 is installed at the other end of each of the air outlet pipes 2, and the foldable airbag 2 is in contact with the lower half of the hook plate.

[0017] More preferably, the diameter of the second air outlet pipe is greater than the diameter of the third air outlet pipe, the second foldable airbag is cylindrical and the diameter of the second foldable airbag is the same as the diameter of the second air outlet pipe.

[0018] Compared with the prior art, the present invention has the following advantages: the present invention wraps the pins of the plug in a limiting plate and a small accordion protective cover to reduce bumps and dust adhesion during daily transfer and placement.

[0019] The present invention achieves the anti-loosening function by engaging the horizontal plate structure of the L-shaped plate with the hook structure of the hook plate, thereby completing the connection and fixation of the plug and the socket.

[0020] In the present invention, the user only needs to press the two T-shaped pressing plates to make the T-shaped pressing plates push the upper part of the hook plate to rotate the hook plate, so that the horizontal plate structure of the L-shaped plate and the hook structure of the hook plate are separated from each other, and under the upward rebound action of the multi-stage spring telescopic rod, the plug moves upward to achieve rapid unlocking of the plug and the socket, and then the user can easily take out the plug.

[0021] The present invention realizes automatic suction of air in the socket when the plug is pulled out of the socket, and the operation is convenient. The air is gradually sucked out during the pulling out process, which is different from the method in the prior art of directly extracting all the air in the socket, because this method will form a large negative pressure to hinder the plug from being pulled out of the socket.

[0022] When the protective gas is released, the present invention causes the plug pin to automatically and slowly separate from the socket, thereby reducing the probability of fire by separating from the electrical connection state, and leaving a filling space for the protective gas, so that the protective gas gradually fills the socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 What is shown is a schematic diagram of the three-dimensional structure of the anti-loosening electric power supply plug device of the present invention;

[0024] Figure 2 What is shown is a schematic diagram of the internal three-dimensional structure of the plug and the socket of the present invention;

[0025] Figure 3 What is shown is a schematic diagram of the internal three-dimensional structure of the socket of the present invention;

[0026] Figure 4 What is shown is a three-dimensional structural schematic diagram of a foldable airbag of the present invention;

[0027] Figure 5What is shown is a schematic diagram of the internal three-dimensional structure of a foldable airbag of the present invention;

[0028] Figure 6 What is shown is a schematic diagram of the combined three-dimensional structure of the air storage box, the second air outlet pipe and the third air outlet pipe of the present invention;

[0029] Figure 7 What is shown is a schematic diagram of the combined three-dimensional structure of the second and third air outlet pipes and the second foldable airbag of the present invention.

[0030] In the figure: 1-plug, 2-socket, 3-limiting plate, 4-multi-stage spring telescopic rod, 5-small accordion protective cover, 6-limiting frame, 101-pin, 201-jack, 202-groove, 301-through groove, 11-L-shaped plate, 12-hook plate, 13-T-shaped pressing plate, 21-squeezing rod, 22-foldable airbag one, 23-inlet pipe, 24-outlet pipe one, 25-elastic telescopic rod, 31-air storage box, 32-outlet pipe two, 33-outlet pipe three, 34-foldable airbag two. DETAILED DESCRIPTION

[0031] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0032] Example 1

[0033] An anti-loosening electric power supply plug device, such as Figure 1-Figure 3 As shown, it comprises a plug 1 and a socket 2, wherein the plug 1 has a pin 101, and the socket 2 has a socket 201, and the pin 101 of the plug 1 is inserted into the socket 201 of the socket 2 for power transmission;

[0034] Also includes:

[0035] A limit plate 3, wherein the limit plate 3 and the insertion pin 101 slide relative to each other;

[0036] A multi-stage spring telescopic rod 4, two multi-stage spring telescopic rods 4 are installed between the limit plate 3 and the plug 1;

[0037] A small accordion protective cover 5 is installed at the edge between the limiting plate 3 and the plug 1. The limiting plate 3 and the small accordion protective cover 5 cover the pin 101 to avoid bumping and bending.

[0038] A limiting frame 6 is installed at the edge of one side of the socket 2 .

[0039] The plug 1 is installed with two L-shaped plates 11, and the two L-shaped plates 11 are symmetrically distributed on both sides of the pin 101. The socket 2 is provided with two symmetrically distributed grooves 202, and the two grooves 202 are distributed on both sides of the jack 201. The limiting plate 3 is provided with two symmetrically distributed through grooves 301, and the positions of the grooves 202 and the through grooves 301 correspond to each other up and down. A hook plate 12 is rotatably connected in each of the grooves 202, and a torsion spring is installed on the rotating shaft of the hook plate 12. The torsion spring makes the hook plate 12 tend to maintain a vertical state. Two symmetrically distributed T-shaped pressing plates 13 are penetrated and damped slidingly arranged on the socket 2, and the T-shaped pressing plates 13 are used to push the upper part of the hook plate 12.

[0040] In this embodiment, by setting the limiting plate 3, the multi-stage spring telescopic rod 4 and the small accordion protective cover 5, the pin 101 of the plug 1 is wrapped in the limiting plate 3 and the small accordion protective cover 5 to reduce the bumping and dust adhesion during daily transfer and placement. When the pin 101 of the plug 1 is inserted into the socket 201 of the socket 2, it is not convenient to align the pin 101 with the socket 201 because the pin 101 is wrapped. Therefore, by designing the limiting frame 6, the user only needs to align the limiting plate 3 with the limiting frame 6 and put the limiting plate 3 into the limiting frame 6. At this time, the pin 101 is automatically aligned with the socket 201. The user then presses down the plug 1 to insert the pin 101 into the socket 201. During the insertion process, the multi-stage spring telescopic rod 4 is gradually compressed, and at the same time, the L-shaped plate 11 moves down with the plug 1 and passes through the through groove 301 into the groove 202, so that the horizontal plate structure of the L-shaped plate 11 contacts the hook structure of the hook plate 12. The hook plate 12 is rotated to a vertical position under the action of the torsion spring, so that the cross plate structure of the L-shaped plate 11 and the hook structure of the hook plate 12 are engaged with each other, thereby completing the connection and fixation of the plug 1 and the socket 2. When the pin 101 needs to be pulled out of the socket 201, the user only needs to press the two T-shaped pressing plates 13 to make the T-shaped pressing plate 13 push the upper part of the hook plate 12 to rotate the hook plate 12, so that the cross plate structure of the L-shaped plate 11 and the hook structure of the hook plate 12 are disengaged from each other, and under the upward rebound action of the multi-stage spring telescopic rod 4, the plug 1 moves upward to achieve rapid unlocking of the plug 1 and the socket 2, and then the user can easily take out the plug 1, and the hook plate 12 rotates to a vertical position under the action of the torsion spring, and pushes the T-shaped pressing plate 13 outward to the initial position.

[0041] It should be noted that damping is provided at the telescopic joint of the multi-stage spring telescopic rod 4 so that the multi-stage spring telescopic rod 4 rebounds slowly and the insertion pin 101 moves up slowly.

[0042] It should be noted that the small accordion protective cover 5 can only be folded and stretched vertically, which will not affect the insertion of the pin 101 into the socket 201.

[0043] Example 2

[0044] On the basis of Example 1, Figure 1-Figure 5 As shown, the plug 1 is provided with two symmetrically distributed extrusion rods 21, and the two extrusion rods 21 are distributed on both sides of the plug pin 101. A foldable air bag 22 is installed in each of the grooves 202, and the position of the foldable air bag 22 corresponds to the position of the extrusion rod 21 up and down. An air inlet pipe 23 is installed on one side of each of the foldable air bags 22, and the air inlet pipe 23 passes through the jack 201. An air outlet pipe 24 is installed on the other side of each of the foldable air bags 22, and the air outlet pipe 24 passes through the socket 2.

[0045] An elastic telescopic rod 25 is installed in each of the foldable airbags 22 , and the telescopic end and the fixed end of the elastic telescopic rod 25 are respectively connected to the top end and the bottom end of the foldable airbag 22 .

[0046] One-way valves are installed in both the air inlet pipe 23 and the air outlet pipe 24. Air flows from the jack 201 through the air inlet pipe 23 to the foldable airbag 22, and air flows from the foldable airbag 22 to the outside through the air outlet pipe 24.

[0047] In this embodiment, when the insertion pin 101 moves downward and is inserted into the insertion hole 201, the plug 1 simultaneously drives the extrusion rod 21 to move downward, so that the extrusion rod 21 passes through the through slot 301 and moves downward into the groove 202 and squeezes the folding airbag 22, so that the air flows from the folding airbag 22 to the outside through the air outlet pipe 24, so that the folding airbag 22 is in a negative pressure state;

[0048] During the process of the pin 101 moving up and pulling out the socket 201, the plug 1 simultaneously drives the squeezing rod 21 to move upward, and the squeezing rod 21 slowly moves up to stop squeezing the folding airbag 22, so that the folding airbag 22 gradually rebounds and recovers. Under the action of negative pressure, the air flows from the groove 202 through the air intake pipe 23 to the folding airbag 22, thereby reducing the air in the socket 201 and avoiding arc ignition. In this way, the air in the socket 201 is automatically sucked out during the process of the plug 1 being pulled out of the socket 2. The operation is convenient, and the air is gradually sucked out during the pulling out process, which is different from the method of directly extracting all the air in the socket 201 in the prior art, because this method will form a large negative pressure to hinder the plug 1 from being pulled out of the socket 2.

[0049] Furthermore, by designing the elastic telescopic rod 25, the smooth rebound of the foldable airbag 22 is ensured, and the external force of the elastic telescopic rod 25 is used to ensure that the rebound of the foldable airbag 22 has sufficient suction force on the air.

[0050] Example 3

[0051] On the basis of Example 2, Figure 1-Figure 7 As shown, a temperature sensor is provided in the socket 2, and the temperature sensor is used to monitor whether there is abnormal temperature rise during the use of the socket 2.

[0052] An air storage box 31 is installed in each of the grooves 202, and an air outlet pipe 2 32 is installed at the air outlet of each of the air storage boxes 31. An air outlet pipe 3 33 is installed at one end of each of the air outlet pipes 2 32, and the air outlet pipe 3 33 penetrates into the socket 201. The air storage box 31 is filled with protective gas in a high-pressure state, and a small solenoid valve is installed at the air outlet of the air storage box 31.

[0053] The protective gas in the gas storage box 31 is an inert gas, such as nitrogen or argon.

[0054] A foldable airbag 34 is installed at the other end of each of the second air outlet pipes 32 , and the second foldable airbag 34 is in contact with the lower half of the hook plate 12 .

[0055] The diameter of the second air outlet pipe 32 is larger than the diameter of the third air outlet pipe 33. The second foldable airbag 34 is cylindrical and the diameter of the second foldable airbag 34 is the same as the diameter of the second air outlet pipe 32. When the protective gas flows into the second air outlet pipe 32, since the diameter of the second foldable airbag 34 is larger than the diameter of the third air outlet pipe 33, the protective gas will preferentially flow into the second foldable airbag 34, thereby ensuring the rapid expansion of the second foldable airbag 34.

[0056] In this embodiment, the temperature sensor in the socket 2 is used to monitor whether there is abnormal temperature rise during the use of the socket 2. When the temperature sensor detects abnormal temperature, it sends a signal to open the small solenoid valve at the outlet of the gas storage box 31, and the protective gas in the gas storage box 31 enters the socket 201 through the second outlet pipe 32 and the third outlet pipe 33, so that the protective gas fills the contact position between the pin 101 and the socket 201, thereby reducing the fire phenomenon.

[0057] Furthermore, a foldable airbag 34 is installed on the outlet pipe 32. The foldable airbag 34 is compressed under the squeezing action of the hook plate 12. When the protective gas in the gas storage box 31 enters the outlet pipe 32, the impact force of the high-pressure protective gas when it flows out is used to quickly fill the foldable airbag 34, so that the foldable airbag 34 quickly expands and pushes the lower half of the hook plate 12, so that the hook plate 12 rotates, so that the horizontal plate structure of the L-shaped plate 11 and the hook plate 12 are aligned. The hook structures are separated from each other, so that the pin 101 is automatically and slowly separated from the socket 201, and the probability of fire is reduced by separating from the electrical connection state, and space is left for the shielding gas to gradually fill the socket 201. This is different from the method of directly sending the shielding gas into the socket 201 in the prior art. However, the method of the prior art does not take into account that the pin 101 and the socket 201 are still in an electrically connected state at this time, and the fire hazard is relatively large, and there is no large space between the two for the shielding gas to enter.

[0058] It should be noted that since the pressure of the protective gas gradually decreases after it is released, the thrust of the folding airbag 2 34 on the hook plate 12 disappears, so the state of the hook plate 12 gradually recovers under the rotation of the torsion spring of the hook plate 12, and the reverse thrust of the hook plate 12 is used to squeeze out the protective gas in the folding airbag 2 34 to maximize the utilization rate of the protective gas.

[0059] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Persons familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. An anti-loosening electric power supply plug device, comprising a plug (1) and a socket (2), the plug (1) having a plug pin (101), the socket (2) having a socket (201), the plug pin (101) of the plug (1) being inserted into the socket (201) of the socket (2) for power transmission; Its characteristic is that include: A limit plate (3), wherein the limit plate (3) and the insertion pin (101) slide relative to each other; A multi-stage spring telescopic rod (4), wherein a plurality of multi-stage spring telescopic rods (4) are installed between the limit plate (3) and the plug (1); A small accordion protective cover (5), wherein a small accordion protective cover (5) is installed at the edge between the limiting plate (3) and the plug (1), and the pin (101) is covered by the limiting plate (3) and the small accordion protective cover (5); The plug (1) is provided with two L-shaped plates (11), the two L-shaped plates (11) are symmetrically distributed on both sides of the plug pin (101), the socket (2) is provided with two symmetrically distributed grooves (202), the two grooves (202) are distributed on both sides of the plug hole (201), the limiting plate (3) is provided with two symmetrically distributed through grooves (301), the grooves (202) and the through grooves (301) are located in a vertically corresponding manner, each of the grooves (202) is rotatably connected to a hook plate (12), the rotating shaft of the hook plate (12) is provided with a torsion spring, and the torsion spring makes the hook plate (12) tend to maintain a vertical state, and the socket (2) is provided with a through and blocking member. The Nylon slide is provided with two symmetrically distributed T-shaped pressing plates (13), wherein the T-shaped pressing plates (13) are used to push the upper part of the hook plate (12); after the L-shaped plate (11) moves downward through the through groove (301) and enters the groove (202), the transverse plate structure of the L-shaped plate (11) contacts the hook structure of the hook plate (12) and rotates the hook plate (12); when the transverse plate structure of the L-shaped plate (11) passes over the hook structure of the hook plate (12) along the inclined surface of the hook structure of the hook plate (12), the hook plate (12) is reset to a vertical state under the rotation action of the torsion spring, so that the transverse plate structure of the L-shaped plate (11) and the hook structure of the hook plate (12) are mutually engaged.

2. An anti-loosening electric power supply plug device according to claim 1, characterized in that: A limit frame (6) is installed at the edge of one side of the socket (2), and the limit frame (6) is used to guide and limit the limit plate (3).

3. An anti-loosening electric power supply plug device according to claim 1, characterized in that: The plug (1) is provided with two symmetrically distributed squeezing rods (21), the two squeezing rods (21) being distributed on both sides of the plug pin (101), each of the grooves (202) being provided with a folding airbag (22), the position of the folding airbag (22) corresponding to the position of the squeezing rod (21) in the upper and lower parts, an air inlet pipe (23) being provided on one side of each of the folding airbags (22), the air inlet pipe (23) being inserted into the plug hole (201), and an air outlet pipe (24) being provided on the other side of each of the folding airbags (22), the air outlet pipe (24) being inserted out of the socket (2).

4. An anti-loosening electric power supply plug device according to claim 3, characterized in that: Each of the foldable airbags (22) is provided with an elastic telescopic rod (25), and the telescopic end and the fixed end of the elastic telescopic rod (25) are respectively connected to the top end and the bottom end of the foldable airbag (22).

5. The anti-loosening power supply plug device according to claim 1, characterized in that: A temperature sensor is provided in the socket (2), and is used to monitor whether there is abnormal temperature rise during use of the socket (2).

6. An anti-loosening electric power supply plug device according to claim 5, characterized in that: A gas storage box (31) is installed in each of the grooves (202); a second gas outlet pipe (32) is installed at the gas outlet of each of the gas storage boxes (31); a third gas outlet pipe (33) is installed at one end of each of the second gas outlet pipes (32); the third gas outlet pipe (33) penetrates into the socket (201); a high-pressure protective gas is contained in the gas storage box (31); a small electromagnetic valve is installed at the gas outlet of the gas storage box (31); when a temperature sensor in the socket (2) detects abnormal temperature, a signal is sent to open the small electromagnetic valve at the gas outlet of the gas storage box (31); and the protective gas enters the socket (201) through the second gas outlet pipe (32) and the third gas outlet pipe (33).

7. An anti-loosening electric power supply plug device according to claim 6, characterized in that: The protective gas in the gas storage box (31) is an inert gas.

8. An anti-loosening electric power supply plug device according to claim 6, characterized in that: The other end of each of the second air outlet pipes (32) is provided with a second folding air bag (34), and the second folding air bag (34) is in contact with the lower half of the hook plate (12).

9. An anti-loosening electric power supply plug device according to claim 8, characterized in that: The diameter of the second air outlet pipe (32) is greater than the diameter of the third air outlet pipe (33); the second foldable air bag (34) is cylindrical and the diameter of the second foldable air bag (34) is the same as the diameter of the second air outlet pipe (32).

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