Direct insertion type high-voltage connector

Abstract

The invention relates to the technical field of direct insertion type connectors, in particular to a direct insertion type high-voltage connector which comprises a male end plug and a female end plug, and a self-locking assembly for fixing the male end plug and the female end plug is installed between the male end plug and the female end plug. The inflation mechanism inflates inert gas into the annular air bags, under the blocking effect of the orientation ring, the two annular air bags expand in the direction close to each other, friction drives the male end plug and the female end plug to be further close to each other, the mutual extrusion force of the two rubber blocks is larger, the sealing effect is better, and the annular air bags expand to be attached to the pressure sensor. The annular air bag expands to be attached and sealed to the outer sides of the male end plug and the female end plug to form second sealing, the possibility that external dust and rainwater enter the connecting position is further reduced, connection is more stable, the connector is more suitable for high-voltage operation, and the service life of the male end plug and the female end plug can also be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of direct plug-in connectors, in particular to a direct plug-in high-voltage connector. Background Art

[0002] Connectors, also known as plugs and sockets, are widely used in various fields, from small electronic devices such as mobile phones and computers to large equipment such as medical equipment, aviation, military, etc. There are many types of connectors, which can be divided into straight-in, rotary, push-pull, etc. according to the connection method. The straight-in connection is fast and easy to disassemble. In order to improve the connection stability, a self-locking component will be added. This type of straight-in connector is more suitable for high-voltage operations, but there is still room for improvement.

[0003] The two plug connections of some connectors are not sealed or rely on rubber rings for sealing. As time goes by, the rubber rings will age and loosen, reducing the sealing effect. External dust and rainwater may enter the connection, affecting the service life of the connector and even causing a short circuit. Furthermore, when a short circuit or other reasons cause electric sparks or fire, the connector does not have monitoring and fire extinguishing functions. The high-pressure environment may cause the fire to spread rapidly and expand the loss. Summary of the invention

[0004] In response to the above problems, the present application provides a direct-plug high-voltage connector to solve the problem that the connection between the two plugs in the prior art is not sealed and protected, and external dust and rainwater may enter the inside of the connection, affecting the service life of the connector and even causing a short circuit. Furthermore, when a short circuit occurs at the connection or electric sparks or fire are caused by other reasons, the connector does not have monitoring and fire extinguishing functions, and the high-voltage environment may cause the fire to spread rapidly and the loss to expand.

[0005] The technical solution of the present invention is:

[0006] A plug-in high-voltage connector, comprising a male plug and a female plug, a self-locking assembly for fixing the male plug and the female plug is installed between them, a reinforcing sealing mechanism for the sealed connection is installed inside the self-locking assembly, and a rubber block is fixedly installed at one end of the male plug and the female plug close to each other;

[0007] A sealing ring is installed on the outer periphery of the female end plug, and two directional rings are symmetrically fixedly installed on the inner side of the sealing ring, and an annular air bag is installed on the side where the two directional rings are close to each other;

[0008] After the male plug and the female plug are connected, the sealing ring is sleeved on the outside of the two, and the inflation mechanism fills the annular airbag with inert gas. When electric sparks or fire occur at the sealed connection, the temperature rises sharply, and the annular airbag expands and touches the pressure sensor and the puncture cone in turn. The pressure sensor is used to prompt the staff to deal with emergencies in time, and the puncture cone is used to puncture the annular airbag. The inert gas surrounds the connection to reduce the possibility of fire.

[0009] Furthermore, the self-locking component includes a rotating plate, the bottom end of the rotating plate is hingedly mounted on the outside of the male end plug, two fixed blocks are symmetrically fixedly mounted on the outside of the female end plug, a limit rod is slidably installed through the middle of the fixed block, a protrusion matching the rotating plate is fixedly mounted on the end of the limit rod, a tension spring is fixedly mounted between the protrusion and the fixed block, the tension spring is movably sleeved on the outer periphery of the limit rod, and the limit rod is fixedly connected to the sealing ring.

[0010] Furthermore, the inflation mechanism includes a push plate, an air chamber is opened on the inner side of the rotating plate, the air chamber is filled with inert gas, the push plate is slidably installed inside the air chamber, and an air outlet is opened through the end of the rotating plate, which is connected to the annular airbag.

[0011] Furthermore, an avoidance slope is provided at the end of the push plate away from the rotating plate.

[0012] Furthermore, a sealing ring is embedded and installed on the outer side of the end of the push plate close to the rotating plate.

[0013] Furthermore, a linkage rod is fixedly installed at the end of the push plate close to the rotating plate, the linkage rod slides through the rotating plate, a return spring is fixedly installed between the push plate and the inner side of the gas chamber, and the return spring is movably sleeved on the outer periphery of the linkage rod;

[0014] A self-locking block is rotatably installed at one end of the linkage rod away from the push plate, a locking block is fixedly installed on the top of the male end plug, a through hole is penetrated through the middle of the locking block, a fixing groove is opened on the side of the locking block away from the self-locking block, and the self-locking block cooperates with the fixing groove.

[0015] Furthermore, a plurality of mounting blocks are fixedly mounted on the inner side of the sealing ring, and the pressure sensor and the thorn cone are fixedly mounted on a side of the mounting block close to the annular airbag.

[0016] Furthermore, an air inlet hole is formed through the outer side of the sealing ring, and the air inlet hole is connected to the annular airbag;

[0017] A connecting pipe is installed between the air inlet and the air outlet.

[0018] Furthermore, the pressure sensor is electrically connected to an external control center.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the plug-in high-voltage connector of the present invention, two rubber blocks are squeezed and deformed against each other to form a first seal.

[0021] The inflation mechanism fills the annular airbag with inert gas. Under the blocking effect of the directional ring, the two annular airbags expand towards each other. The friction drives the male plug and the female plug closer together. The mutual squeezing force of the two rubber blocks is greater, and the sealing effect is better.

[0022] The annular airbag expands and fits with the pressure sensor. The annular airbag expands and fits and seals with the outer sides of the male plug and the female plug to form a second seal, further reducing the possibility of external dust and rainwater entering the connection. The connection is more stable and more suitable for high-pressure operations. It can also extend the service life of the male plug and the female plug.

[0023] If the annular airbag is deflated due to aging, or the sealing performance between the annular airbag and the sealing ring deteriorates due to other reasons, the internal pressure of the annular airbag decreases, and the pressure of the annular airbag on the pressure sensor decreases. The pressure sensor sends an electrical signal to the control center, and the staff can perform maintenance in time to ensure the stable operation of the high-voltage connector;

[0024] If sparks or fire occur at the connection due to a short circuit or other reasons, the temperature of the connection will rise sharply, causing the annular airbag to expand and squeeze the pressure sensor. The pressure sensor sends an electrical signal to the control center, and the staff can cut off the power or perform other reasonable operations and arrange maintenance personnel to check and repair to reduce losses. If the temperature continues to rise, the annular airbag will expand and contact the thorn cone, causing the annular airbag to be punctured and the inert gas inside it to flow out, reducing the oxygen concentration near the connection, making the connector less likely to burn and further reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a partial structural schematic diagram of a direct plug-in high voltage connector in the prior art;

[0027] Figure 2 A schematic diagram of the overall structure of a plug-in high-voltage connector provided by the present invention;

[0028] Figure 3 for Figure 2 A magnified image of point A;

[0029] Figure 4 for Figure 2 The enlarged view of point E;

[0030] Figure 5 A schematic diagram of the structural connection of a plug-in high-voltage connector provided by the present invention;

[0031] Figure 6 for Figure 5 A magnified view of point B;

[0032] Figure 7 A schematic diagram of the sealing ring structure of a plug-in high-voltage connector provided by the present invention;

[0033] Figure 8 for Figure 7 Enlarged view of point C;

[0034] Fig. 9 A schematic diagram of the internal structure of a rotating plate of a plug-in high-voltage connector provided by the present invention;

[0035] Fig.10 for Fig. 9 Enlarged view of point D.

[0036] In the figure:

[0037] 1. Male plug;

[0038] 2. Female plug;

[0039] 3. Rubber block;

[0040] 4. Self-locking assembly; 41. Rotating plate; 42. Protrusion; 43. Fixed block; 44. Limit rod; 45. Tension spring;

[0041] 5. Reinforced sealing mechanism; 51. Sealing ring; 52. Orienting ring; 53. Annular airbag; 54. Mounting block; 55. Cone; 56. Pressure sensor; 57. Push plate; 58. Sealing ring; 59. Linkage rod; 510. Return spring; 511. Self-locking block; 512. Locking block; 513. Through hole; 514. Fixing groove; 515. Connecting pipe; 516. Air outlet; 517. Air inlet; 518. Air chamber; 519. Avoidance slope. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0043] As shown in Figure 1- Fig.10As shown, an embodiment of the present invention provides a plug-in high-voltage connector, including a male plug 1 and a female plug 2, a self-locking component 4 is installed between the male plug 1 and the female plug 2 to fix the two, a reinforcing sealing mechanism 5 of the sealed connection is installed inside the self-locking component 4, and a rubber block 3 is fixedly installed at one end of the male plug 1 and the female plug 2 that is close to each other;

[0044] A sealing ring 51 is installed on the periphery of the female end plug 2, two directional rings 52 are symmetrically fixedly installed on the inner side of the sealing ring 51, an annular airbag 53 is installed on the side where the two directional rings 52 are close to each other, and a plurality of mounting blocks 54 are fixedly installed on the inner side of the sealing ring 51, and a pressure sensor 56 and a spike cone 55 are fixedly installed on the side of the mounting block 54 close to the annular airbag 53;

[0045] After the male plug 1 and the female plug 2 are connected, the sealing ring 51 is sleeved on the outside of the two, and the inflation mechanism fills the annular airbag 53 with inert gas. When electric sparks or fire occur at the sealed connection, the temperature rises sharply, and the annular airbag 53 expands and touches the pressure sensor 56 and the thorn cone 55 in turn. The pressure sensor 56 is used to remind the staff to deal with emergencies in time, and the thorn cone 55 is used to puncture the annular airbag 53. The inert gas surrounds the connection to reduce the possibility of fire. The pressure sensor 56 is electrically connected to the external control center.

[0046] In this embodiment, the annular airbag 53 expands and fits the pressure sensor 56. If the annular airbag 53 loses air due to aging, or the sealing performance between the annular airbag 53 and the sealing ring 51 deteriorates due to other reasons, the internal pressure of the annular airbag 53 decreases, and the pressure of the annular airbag 53 on the pressure sensor 56 decreases. The pressure sensor 56 sends an electrical signal to the control center, and the staff can perform maintenance in time to ensure the stable operation of the high-voltage connector.

[0047] If sparks or fire are generated at the connection due to a short circuit or other reasons, the temperature of the connection will rise sharply, causing the annular airbag 53 to expand and squeeze the pressure sensor 56. The pressure sensor 56 sends an electrical signal to the control center, and the staff can cut off the power or perform other reasonable operations, and arrange maintenance personnel to check and repair to reduce losses. If the temperature continues to rise, the annular airbag 53 expands and contacts the thorn cone 55, and the annular airbag 53 is punctured, and the inert gas inside it flows out, so that the oxygen concentration near the connection is reduced, the connector is not easy to burn, and the loss is further reduced.

[0048] Specifically, the self-locking component 4 includes a rotating plate 41, the bottom end of the rotating plate 41 is hingedly installed on the outside of the male end plug 1, and two fixed blocks 43 are symmetrically fixedly installed on the outside of the female end plug 2. A limit rod 44 is slidably installed through the middle of the fixed block 43. The fixed block 43 is used to limit the movement trajectory of the limit rod 44. A protrusion 42 that cooperates with the rotating plate 41 is fixedly installed on the end of the limit rod 44. A tension spring 45 is fixedly installed between the protrusion 42 and the fixed block 43, which is used to push the protrusion 42 and the rotating plate 41 to form self-locking. The tension spring 45 is movably sleeved on the outer periphery of the limit rod 44, and the limit rod 44 is fixedly connected to the sealing ring 51.

[0049] In this embodiment, the staff inserts the male plug 1 and the female plug 2 relative to each other, rotates the rotating plate 41, so that the rotating plate 41 squeezes the protrusion 42, so that the male plug 1 and the female plug 2 are closer to each other, and the two rubber blocks 3 squeeze and deform each other to form a first seal. Finally, the rotating plate 41 passes over the protrusion 42 and forms a self-locking with it, which is the same as the prior art.

[0050] Specifically, the inflation mechanism includes a push plate 57, and an air chamber 518 is opened on the inner side of the rotating plate 41. The air chamber 518 is filled with inert gas. The push plate 57 is slidably installed inside the air chamber 518, which can extend the rotating force arm of the rotating plate 41, making it easier for the staff to rotate the rotating plate 41. An air outlet hole 516 is opened through the end of the rotating plate 41, and the air outlet hole 516 is connected to the annular airbag 53.

[0051] In this embodiment, the protrusion 42 is squeezed to drive the tension spring 45 to be compressed, and the sealing ring 51 moves to the connection between the male plug 1 and the female plug 2. The two annular air bags 53 are located on both sides of the connection. The staff pushes the push plate 57 into the air chamber 518, and the inert gas inside the air chamber 518 is squeezed into the annular air bags 53. Under the blocking effect of the directional ring 52, the two annular air bags 53 expand in the direction of approaching each other, and the friction drives the male plug 1 and the female plug 2 to move closer. The two rubber blocks 3 have a greater mutual squeezing force and a better sealing effect. The annular air bag 53 expands and fits with the pressure sensor 56. The annular air bag 53 expands and fits and seals with the outer sides of the male plug 1 and the female plug 2 to form a second seal, which further reduces the possibility of external dust and rainwater entering the connection. The connection is more stable and more suitable for high-pressure operations, and the service life of the male plug 1 and the female plug 2 can also be extended.

[0052] Specifically, an avoidance slope 519 is provided at the end of the push plate 57 away from the rotating plate 41. When an external object hits the rotating plate 41, it can avoid from above the rotating plate 41. A sealing ring 58 is embedded and installed on the outer side of the end of the push plate 57 close to the rotating plate 41, so that the gas inside the air chamber 518 is not easy to leak.

[0053] Specifically, a linkage rod 59 is fixedly installed at the end of the push plate 57 close to the rotating plate 41. The linkage rod 59 slides through the rotating plate 41. A return spring 510 is fixedly installed between the push plate 57 and the inner side of the air chamber 518 to drive the push plate 57 to return to its original position. The return spring 510 is movably sleeved on the outer periphery of the linkage rod 59.

[0054] A self-locking block 511 is rotatably installed at one end of the linkage rod 59 away from the push plate 57, and a locking block 512 is fixedly installed on the top of the male plug 1. A through hole 513 is opened in the middle of the locking block 512, and the self-locking block 511 can pass through the through hole 513. A fixing groove 514 is opened on the side of the locking block 512 away from the self-locking block 511. The size of the fixing groove 514 is the same as that of the self-locking block 511, and the depth is less than the thickness of the self-locking block 511. The self-locking block 511 cooperates with the fixing groove 514.

[0055] In this embodiment, when the push plate 57 moves, the reset spring 510 is compressed, and the linkage rod 59 and the self-locking block 511 move through the through hole 513. The staff rotates the self-locking block 511, and under the pulling force of the reset spring 510, the self-locking block 511 enters the fixing groove 514, thereby fixing the push plate 57. At this time, the rotating plate 41 cannot rotate either, thereby self-locking the connector.

[0056] Specifically, an air inlet hole 517 is formed through the outer side of the sealing ring 51 , the air inlet hole 517 is connected to the annular airbag 53 , and a connecting pipe 515 is installed between the air inlet hole 517 and the air outlet hole 516 .

[0057] How it works:

[0058] The connector is powered on, and the staff inserts the male plug 1 and the female plug 2 relative to each other, and rotates the rotating plate 41 so that the rotating plate 41 squeezes the protrusion 42, so that the male plug 1 and the female plug 2 are closer to each other, and the two rubber blocks 3 squeeze each other and deform to form a first seal, and finally the rotating plate 41 passes over the protrusion 42 to form a self-locking with it. The staff can rotate the rotating plate 41 through the push plate 57, and the force arm is extended, so that the rotating plate 41 can be driven to pass over the protrusion 42 more easily.

[0059] The protrusion 42 is squeezed to drive the tension spring 45 to be compressed, and the sealing ring 51 moves to the connection between the male plug 1 and the female plug 2. Two annular air bags 53 are located on both sides of the connection. The staff pushes the push plate 57 into the air chamber 518. The inert gas inside the air chamber 518 is squeezed and enters the annular air bags 53 through the connecting pipe 515. Under the blocking effect of the directional ring 52, the two annular air bags 53 expand in the direction of approaching each other, and the friction drives the male plug 1 and the female plug 2 to get closer. The mutual squeezing force of the two rubber blocks 3 is greater, and the sealing effect is better. The annular air bag 53 expands and fits with the pressure sensor 56. The annular air bag 53 expands and fits and seals with the outer sides of the male plug 1 and the female plug 2 to form a second seal, which further reduces the possibility of external dust and rainwater entering the connection. The connection is more stable and more suitable for high-pressure operations, and the service life of the male plug 1 and the female plug 2 can also be extended.

[0060] When the push plate 57 moves, the return spring 510 is compressed, the linkage rod 59 and the self-locking block 511 move through the through hole 513, and the staff rotates the self-locking block 511. Under the pulling force of the return spring 510, the self-locking block 511 enters the fixing groove 514, thereby fixing the push plate 57. At this time, the rotating plate 41 cannot rotate either, thereby forming a self-locking fixation of the connector. The avoidance slope 519 allows an external object to avoid the rotating plate 41 from above when it hits the rotating plate 41.

[0061] If the annular airbag 53 is deflated due to aging, or the sealing performance between the annular airbag 53 and the sealing ring 51 is deteriorated due to other reasons, the internal pressure of the annular airbag 53 is reduced, and the pressure of the annular airbag 53 on the pressure sensor 56 is reduced. The pressure sensor 56 sends an electrical signal to the control center, and the staff can perform maintenance in time to ensure the stable operation of the high-voltage connector;

[0062] If sparks or fire are generated at the connection due to a short circuit or other reasons, the temperature of the connection will rise sharply, causing the annular airbag 53 to expand and squeeze the pressure sensor 56. The pressure sensor 56 sends an electrical signal to the control center, and the staff can cut off the power or perform other reasonable operations, and arrange maintenance personnel to check and repair to reduce losses. If the temperature continues to rise, the annular airbag 53 expands and contacts the thorn cone 55, and the annular airbag 53 is punctured, and the inert gas inside it flows out, so that the oxygen concentration near the connection is reduced, the connector is not easy to burn, and the loss is further reduced.

[0063] The connector is powered off, and the staff pulls out the self-locking block 511 and rotates it to reset it. Under the elastic force of the reset spring 510, the push plate 57 and the linkage rod 59 are reset, and the internal gas of the annular airbag 53 is sucked into the air chamber 518. The rotating plate 41 is rotated to reset, and the sealing ring 51 is reset under the elastic force of the tension spring 45. The staff separates the male plug 1 and the female plug 2 to cut off the power.

[0064] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plug-in type high voltage connector, comprising a male plug (1) and a female plug (2), wherein a self-locking component (4) is installed between the male plug (1) and the female plug (2) to fix the two, and a reinforcing sealing mechanism (5) of the sealed connection is installed inside the self-locking component (4), characterized in that: A rubber block (3) is fixedly mounted on the ends of the male plug (1) and the female plug (2) that are close to each other; A sealing ring (51) is installed on the periphery of the female end plug (2), two directional rings (52) are symmetrically fixedly installed on the inner side of the sealing ring (51), and an annular air bag (53) is installed on the side of the two directional rings (52) close to each other; After the male plug (1) and the female plug (2) are connected, the sealing ring (51) is sleeved on the outer periphery of the two, and the inflation mechanism fills the annular airbag (53) with inert gas. When an electric spark or fire occurs at the sealed connection, the temperature rises sharply, and the annular airbag (53) expands and touches the pressure sensor (56) and the puncture cone (55) in turn. The pressure sensor (56) is used to prompt the staff to deal with the emergency in time, and the puncture cone (55) is used to puncture the annular airbag (53). The inert gas surrounds the connection, thereby reducing the possibility of fire.

2. A plug-in high voltage connector according to claim 1, characterized in that: The self-locking assembly (4) comprises a rotating plate (41), the bottom end of which is hingedly mounted on the outside of the male end plug (1), and two fixed blocks (43) are symmetrically fixedly mounted on the outside of the female end plug (2), a limit rod (44) is slidably penetrated through the middle of the fixed block (43), a protrusion (42) matching the rotating plate (41) is fixedly mounted on the end of the limit rod (44), a tension spring (45) is fixedly mounted between the protrusion (42) and the fixed block (43), the tension spring (45) is movably sleeved on the outer periphery of the limit rod (44), and the limit rod (44) is fixedly connected to the sealing ring (51).

3. A plug-in high voltage connector as claimed in claim 2, characterized in that: The inflation mechanism comprises a push plate (57), an air chamber (518) is provided inside the rotating plate (41), an inert gas is contained inside the air chamber (518), the push plate (57) is slidably mounted inside the air chamber (518), an air outlet hole (516) is provided through the end of the rotating plate (41), and the air outlet hole (516) is communicated with the annular air bag (53).

4. A plug-in high voltage connector as claimed in claim 3, characterized in that: An avoidance slope (519) is provided at the end of the push plate (57) away from the rotating plate (41).

5. A plug-in high voltage connector as claimed in claim 3, characterized in that: A sealing ring (58) is embedded and installed on the outer side of the end of the push plate (57) close to the rotating plate (41).

6. A plug-in high voltage connector as claimed in claim 3, characterized in that: A linkage rod (59) is fixedly mounted on the end of the push plate (57) close to the rotating plate (41), the linkage rod (59) slidably penetrates the rotating plate (41), a return spring (510) is fixedly mounted between the push plate (57) and the inner side of the gas chamber (518), and the return spring (510) is movably sleeved on the outer periphery of the linkage rod (59); A self-locking block (511) is rotatably mounted on one end of the linkage rod (59) away from the push plate (57); a locking block (512) is fixedly mounted on the top of the male end plug (1); a through hole (513) is provided in the middle of the locking block (512); a fixing groove (514) is provided on one side of the locking block (512) away from the self-locking block (511); and the self-locking block (511) cooperates with the fixing groove (514).

7. The in-line high voltage connector according to claim 1, characterized in that: A plurality of mounting blocks (54) are fixedly mounted on the inner side of the sealing ring (51), and the pressure sensor (56) and the thorn cone (55) are fixedly mounted on a side of the mounting block (54) close to the annular airbag (53).

8. A plug-in high voltage connector as claimed in claim 3, characterized in that: An air inlet hole (517) is formed through the outer side of the sealing ring (51), and the air inlet hole (517) is connected to the annular air bag (53); A connecting pipe (515) is installed between the air inlet (517) and the air outlet (516).

9. The in-line high voltage connector according to claim 1, characterized in that: The pressure sensor (56) is electrically connected to an external control center.

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