A vehicle-mounted circuit breaker with undervoltage tripping function

Abstract

The present invention discloses a vehicle-mounted circuit breaker with a pressure loss tripping function, and relates to the technical field of protective switch housings. The vehicle-mounted circuit breaker with a pressure loss tripping function comprises a shell arranged outside the vehicle-mounted circuit breaker body, wherein the vehicle-mounted circuit breaker body comprises a card slot, and a toggle switch is arranged in the card slot. The vehicle-mounted circuit breaker body also comprises: a moving mechanism arranged on the side wall of the shell, and an L-shaped cover plate is connected to the moving mechanism. The vehicle-mounted circuit breaker with a pressure loss tripping function is convenient for installing and disassembling the vehicle-mounted circuit breaker body, and at the same time, it has a good buffering effect; when the cover plate is closed, the air in the shell can be extracted, and the protective gas can be squeezed into the shell for protection; when vibration occurs, lubricating oil can be automatically sprayed to the card slot and the toggle switch, so that the toggle switch is smoother, ensuring the use effect and life of the vehicle-mounted circuit breaker body, and thus making the pressure loss tripping function more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of protective switch casings, in particular to a vehicle-mounted circuit breaker with a pressure-loss tripping function. Background Art

[0002] An on-board circuit breaker with a voltage loss release function is a circuit breaker specially designed for use in the circuit systems of automobiles or other vehicles. The main feature of this circuit breaker is that it is equipped with a voltage loss release, which can automatically cut off the circuit when the power supply voltage drops abnormally or disappears, thereby protecting the vehicle circuit and electrical equipment from damage.

[0003] However, existing on-vehicle circuit breakers with under-pressure tripping functions are mostly installed and fixed with bolts, which are not convenient and quick to install and remove. During use, they are easily affected by long-term vibration and bumps in on-vehicle applications, which not only easily damages internal components and affects their performance and lifespan, but also causes the toggle switch to be falsely triggered, affecting the performance and reliability of the under-pressure tripping. At the same time, they are easily affected by moisture in the air, which also affects their performance and lifespan. Moreover, after long-term use, the toggle switch is prone to getting stuck, which prevents the tripping action from being carried out smoothly, affecting the performance and reliability of the under-pressure tripping. Summary of the Invention

[0004] The object of the present invention is to provide a vehicle-mounted circuit breaker with a pressure loss tripping function to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vehicle-mounted circuit breaker with a pressure loss tripping function, comprising a housing disposed outside the vehicle-mounted circuit breaker body, the vehicle-mounted circuit breaker body comprising a slot, and a toggle switch disposed within the slot, and further comprising:

[0006] A moving mechanism is provided on the side wall of the housing, and an L-shaped cover is connected to the moving mechanism so that the cover can move along the housing to open and close the housing;

[0007] A damping mechanism is provided in the housing and is used to limit and dampen the vehicle-mounted circuit breaker body;

[0008] a lubricating mechanism, disposed on a side wall of the cover plate, so as to lubricate the toggle switch when the cover plate is closed to the housing;

[0009] The ventilation mechanism is arranged on the side wall of the shell and is located on the same side as the moving mechanism, and is used to discharge the air in the shell and supply protective gas.

[0010] Preferably, the shock absorbing mechanism includes:

[0011] an annular tube, fixedly connected to the inner wall of the housing and filled with hydraulic oil;

[0012] Multiple groups of guide rods are inserted into the side wall of the annular tube close to the vehicle-mounted circuit breaker body, and the number of guide rods in each group is two;

[0013] A plurality of V-shaped plates fixedly connected to one end of each set of guide rods close to the vehicle-mounted circuit breaker body;

[0014] a fixed cover connected to the top of the annular tube;

[0015] a counterweight plate, slidably connected to the fixed cover;

[0016] a friction mechanism, disposed on the top of the annular tube, for frictionally controlling the movement of the counterweight plate;

[0017] The friction mechanism comprises:

[0018] a first U-shaped block, fixed to the top of the counterweight plate;

[0019] a first fixing block, fixed to the top of the annular tube;

[0020] Two first sleeves, fixed to the side walls of the first fixing block;

[0021] Two first sets of rods, inserted into the two first sleeves;

[0022] a friction block fixedly connected to an end of the first sleeve rod away from the first fixed block and abutting against a side wall of the first U-shaped block;

[0023] Two first elastic members are sleeved on the side walls of the two first sleeves, and the first elastic members are located between the first fixing block and the friction block;

[0024] The first pushing mechanism is arranged above the annular tube and is used for pushing the first U-shaped block to move upward.

[0025] Preferably, the ventilation mechanism includes:

[0026] A first air storage box is fixed to the side wall of the shell, and a first sliding plate is slidably connected to the first air storage box;

[0027] a second air storage box, located below the first air storage box and fixed to the side wall of the shell, and a second sliding plate is slidably connected in the second air storage box;

[0028] a first air extraction pipe, communicating with the first air storage box and the housing, and having a first one-way valve disposed in the first air extraction pipe;

[0029] a first exhaust pipe connected to a side wall of the first air storage box, and a second one-way valve is provided in the first exhaust pipe;

[0030] a second air extraction pipe, communicating with the second air storage box and the housing, and having a third one-way valve disposed in the second air extraction pipe;

[0031] a second exhaust pipe, communicating with the second air storage tank and the housing;

[0032] an opening and closing mechanism, provided on a side wall of the second exhaust pipe, for controlling the opening and closing of the second exhaust pipe;

[0033] a first movable plate, slidably connected to the side wall of the housing and fixed to the first sliding plate and the second sliding plate via a connecting rod;

[0034] The second pushing mechanism is arranged above the first movable plate and is used for pushing the first movable plate to move up and down.

[0035] Preferably, the lubrication mechanism includes:

[0036] A plurality of fuel injection pipes are fixedly inserted into the side wall of the cover plate and the upper end of each fuel injection pipe is connected to the first connecting pipe;

[0037] An oil supply cover is fixed to the top of the cover plate;

[0038] A second movable plate is slidably connected to the oil supply cover and is connected to the inner wall of the oil supply cover via a reset member;

[0039] a second connecting pipe, communicating with the oil supply cover and the first connecting pipe, and having a fourth one-way valve disposed in the second connecting pipe;

[0040] An oil storage tank is fixed above the oil supply cover and is connected to the oil supply cover through an oil inlet hole;

[0041] The moving assembly is arranged on the side wall of the shell away from the first air storage box, so that the second moving plate can be moved when the cover plate is closed to the shell.

[0042] Preferably, the moving component includes:

[0043] a support block, fixed to a side wall of the housing;

[0044] A rotating rod is rotated on the side wall of the support block through a rotating shaft, and a sliding groove is provided on the side wall of the rotating rod;

[0045] A moving rod is inserted into the side wall of the housing, and one end of the moving rod located inside the housing is fixedly connected to a conical cover;

[0046] A spherical ball is inserted into the conical cover and fixed to the top of the counterweight plate via an L-shaped block;

[0047] a second elastic member, sleeved on the side wall of the movable rod, and the second elastic member is located between the housing and the conical cover;

[0048] A first push pin is inserted into the slide groove and fixed to the end of the moving rod away from the conical cover through a second U-shaped block;

[0049] The first handle is fixed to the side wall of the second movable plate through a supporting plate.

[0050] Preferably, the moving mechanism includes:

[0051] a third movable plate connected to the side wall of the housing through a movable module;

[0052] two second sets of rods, fixed to the side walls of the third movable plate;

[0053] Two second sleeves are sleeved on the side walls of the two second sleeve rods and fixed to the cover plate through a first connecting block;

[0054] Two third elastic members are sleeved on the side walls of the two second sleeves, and the third elastic members are located between the first connecting block and the third movable plate.

[0055] Preferably, the first pushing mechanism includes:

[0056] a second fixing block, fixed above the annular tube;

[0057] two third sets of rods, fixed to the side walls of the second fixing block;

[0058] Two third sleeves are sleeved on the side walls of the two third rods;

[0059] A pushing block is fixed to an end of the third sleeve away from the second fixing block through the second connecting block, and a side wall of the pushing block is provided with an inclined surface so that the first U-shaped block can slide on the inclined surface;

[0060] Two fourth elastic members are sleeved on the side walls of the two third sleeves, and the fourth elastic members are located between the second fixing block and the second connecting block;

[0061] The push rod is fixed to the side wall of the second connecting block, and a tapered surface is provided on the end of the push rod away from the second connecting block.

[0062] Preferably, the second pushing mechanism includes:

[0063] A push plate, sliding on the side wall of the first connecting block through a first guide rail and sliding on the top of the first movable plate through a second guide rail;

[0064] An inclined groove is provided on a side wall of the push plate;

[0065] The second pushing pin is inserted into the inclined groove and fixed to the bottom of the third movable plate through an L-shaped frame.

[0066] Preferably, it also includes:

[0067] A toggle mechanism, provided on the side wall of the vehicle-mounted circuit breaker body, for toggling the toggle switch;

[0068] The toggle mechanism comprises:

[0069] Two fourth bushings, fixed to the side walls of the vehicle-mounted circuit breaker body through L-shaped plates;

[0070] Two fourth sleeve rods are inserted into the two fourth sleeves;

[0071] Two L-shaped toggle plates are located on both sides of the toggle switch and are fixed to the lower end of the fourth set of rods through a U-shaped plate;

[0072] an L-shaped rod fixed to the side wall of the fourth set of rods through a third connecting plate;

[0073] The rubber ring is sleeved on the side wall of the L-shaped rod and fixedly embedded in the bottom of the shell.

[0074] Preferably, the opening and closing mechanism includes:

[0075] a rectangular cover fixedly inserted into a side wall of the second exhaust pipe and connected to the second exhaust pipe;

[0076] a sealing plate, slidably connected to the rectangular cover and connected to the rectangular cover via a fifth elastic member;

[0077] a circular hole formed in a side wall of the sealing plate so as to coincide with a cross section of the second exhaust pipe;

[0078] The inclined plate is fixed to the side wall of the connecting rod through a connecting frame, so that the sealing plate can slide on the side wall of the inclined plate.

[0079] Compared with the prior art, the present invention has the following beneficial effects:

[0080] This vehicle-mounted circuit breaker with a pressure-loss tripping function is provided with a shock-absorbing mechanism, a lubrication mechanism, and a ventilation mechanism, etc., which facilitates the installation and removal of the vehicle-mounted circuit breaker body during use, and at the same time, has a good cushioning effect. When the cover is closed, the air in the shell can be extracted, and the protective gas can be squeezed into the shell for protection. When vibration occurs, lubricating oil can be automatically sprayed onto the card slot and the toggle switch, making the toggle switch more smooth, ensuring the use effect and life of the vehicle-mounted circuit breaker body, and thus making the pressure-loss tripping function more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0082] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0083] Figure 3 Schematic diagram of the structure of the lubrication mechanism of the present invention;

[0084] Figure 4 A schematic diagram of a partial cross-sectional structure of the first air storage box and the second air storage box in the present invention;

[0085] Figure 5 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0086] Figure 6 for Figure 1 Schematic diagram of the enlarged structure at B in the middle;

[0087] Figure 7 for Figure 1 Schematic diagram of the enlarged structure at C in the middle;

[0088] Figure 8 for Figure 2 Schematic diagram of the enlarged structure at D in the middle;

[0089] Figure 9 for Figure 3 Schematic diagram of the enlarged structure at E in the middle;

[0090] Figure 10 for Figure 3 Schematic diagram of the enlarged structure at F in the middle;

[0091] Figure 11 for Figure 4 Schematic diagram of the enlarged structure at G in the middle;

[0092] Figure 12 for Figure 9 Schematic diagram of the enlarged structure at H in the middle.

[0093] In the figure: 1. Vehicle-mounted circuit breaker body; 101. Card slot; 102. Toggle switch; 201. First U-shaped block; 202. First fixed block; 203. First sleeve; 204. First set of rods; 205. First elastic member; 206. Friction block; 301. Second fixed block; 302. Third set of rods; 303. Third sleeve; 304. Fourth elastic member; 305. Push rod; 306. Push block; 307. Inclined surface; 308. Second connecting block; 309. Conical surface; 401. Moving module; 402. Third Movable plate; 403, second rod; 404, second sleeve; 405, third elastic member; 406, first connecting block; 501, fuel injection pipe; 502, fuel tank; 503, fuel supply cover; 504, fuel inlet hole; 505, second connecting pipe; 506, first connecting pipe; 507, second movable plate; 508, reset member; 601, support block; 602, rotating shaft; 603, rotating rod; 604, movable rod; 605, conical cover; 606, L-shaped block; 607, ball; 608, second elastic member; 609 , second U-shaped block; 610, slide; 611, first push pin; 612, first handle; 613, support plate; 701, first air storage box; 702, second air storage box; 703, first exhaust pipe; 704, first exhaust pipe; 705, second exhaust pipe; 706, second exhaust pipe; 707, first sliding plate; 708, second sliding plate; 709, connecting rod; 710, first movable plate; 801, first guide rail; 802, push plate; 803, inclined groove; 804, L-shaped frame; 805, second push plate Pin; 806, second guide rail; 901, L-shaped plate; 902, fourth sleeve; 903, fourth rod; 904, third connecting plate; 905, U-shaped plate; 906, toggle plate; 907, L-shaped rod; 908, rubber ring; 1001, rectangular cover; 1002, sealing plate; 1003, circular hole; 1004, fifth elastic member; 1005, connecting frame; 1006, inclined plate; 11, shell; 12, cover plate; 13, annular tube; 14, guide rod; 15, V-shaped plate; 16, fixed cover; 17, counterweight plate. DETAILED DESCRIPTION

[0094] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0095] See also Figures 1-12The present invention provides a technical solution: a vehicle-mounted circuit breaker with a pressure loss tripping function, comprising a housing 11 disposed outside the vehicle-mounted circuit breaker body 1, the vehicle-mounted circuit breaker body 1 comprising a slot 101, and a toggle switch 102 disposed in the slot 101, and further comprising:

[0096] The moving mechanism is arranged on the side wall of the shell 11, and an L-shaped cover 12 is connected to the moving mechanism. The cover 12 is composed of two transparent plates perpendicular to each other, which facilitates observation of the interior of the shell 11. The cover 12 can be moved along the shell 11 to open and close the shell 11.

[0097] The shock absorbing mechanism is disposed in the housing 11 and is used to limit and absorb shock of the vehicle-mounted circuit breaker body 1 .

[0098] The lubricating mechanism is provided on the side wall of the cover 12 so as to lubricate the toggle switch 102 when the cover 12 is closed to the housing 11 .

[0099] The ventilation mechanism is arranged on the side wall of the shell 11 and is located on the same side as the moving mechanism. It is used to exhaust the air in the shell 11 and supply protective gas. The protective gas can be sulfur hexafluoride SF6 gas, which is convenient for installation and disassembly of the vehicle-mounted circuit breaker body 1 and has a good buffering effect. When the cover 12 is closed, the air in the shell 11 can be extracted, and the protective gas can be squeezed into the shell 11 for protection. In the event of vibration, lubricating oil can be automatically sprayed to the card slot 101 and the toggle switch 102, making the toggle switch 102 smoother, ensuring the use effect and life of the vehicle-mounted circuit breaker body 1, and thus making the pressure loss tripping function more reliable.

[0100] See also Figure 1 、 Figure 3 and Figure 9 , the shock absorbing mechanism includes:

[0101] The annular tube 13 is fixedly connected to the inner wall of the housing 11 and is filled with hydraulic oil.

[0102] A plurality of groups of guide rods 14 are inserted into the side wall of the annular tube 13 close to the vehicle-mounted circuit breaker body 1 , and each group of guide rods 14 has two guide rods.

[0103] A plurality of V-shaped plates 15 are fixedly connected to one end of each set of guide rods 14 close to the vehicle-mounted circuit breaker body 1 .

[0104] The fixed cover 16 is connected to the top of the annular tube 13.

[0105] The counterweight plate 17 is slidably connected to the fixed cover 16 .

[0106] The friction mechanism is provided at the top of the annular tube 13 and is used to rub the movement of the counterweight plate 17 .

[0107] The friction mechanism includes:

[0108] The first U-shaped block 201 is fixed to the top of the counterweight plate 17 .

[0109] The first fixing block 202 is fixed to the top of the annular tube 13 .

[0110] The two first sleeves 203 are fixed to the side walls of the first fixing block 202 .

[0111] The two first sleeve rods 204 are inserted into the two first sleeve tubes 203 .

[0112] The friction block 206 is fixedly connected to an end of the first sleeve rod 204 away from the first fixing block 202 and abuts against the side wall of the first U-shaped block 201 .

[0113] The two first elastic members 205 are sleeved on the side walls of the two first sleeves 203, and the first elastic members 205 are located between the first fixed block 202 and the friction block 206. The first elastic member 205 can be a spring, and the two ends of the first elastic member 205 are respectively fixed to the first fixed block 202 and the friction block 206.

[0114] The first pushing mechanism is provided above the annular tube 13 and is used to push the first U-shaped block 201 to move upward. When in use, the vehicle-mounted circuit breaker body 1 is placed in the annular tube 13. Then, the cover 12 is driven to move and close by the moving mechanism. The counterweight plate 17 can move downward along the fixed cover 16 under the action of gravity, thereby squeezing the hydraulic oil in the annular tube 13. Under the action of the hydraulic pressure, the guide rod 14 can be pushed to move, and the multiple V-shaped plates 15 can move toward the direction of the vehicle-mounted circuit breaker body 1 and abut against the side wall of the vehicle-mounted circuit breaker body 1, thereby being able to center the vehicle-mounted circuit breaker body 1 and clamp it to a limited position, making the installation of the vehicle-mounted circuit breaker body 1 more convenient and quick. When the vehicle vibrates, the shell 11 and the cover 12 are driven to vibrate, thereby driving the annular When the tube 13 vibrates, the V-shaped plate 15 abuts against the side wall of the vehicle-mounted circuit breaker body 1. At this time, the V-shaped plate 15 can be pushed to move in the direction close to the annular tube 13. At the same time, the guide rod 14 moves into the annular tube 13. Under the action of the hydraulic pressure, the counterweight plate 17 can be pushed to move upward along the fixed cover 16, which can have a buffering effect. At the same time, when the counterweight plate 17 moves upward, it can drive the first U-shaped block 201 to slide and rub upward along the side wall of the friction block 206. Under the action of the first elastic member 205, the friction block 206 can be abutted against the side wall of the first U-shaped block 201, so that the friction effect is better, thereby consuming the energy during vibration, and achieving a better shock absorption effect, thereby ensuring the use effect and life of the vehicle-mounted circuit breaker body 1, and further making the pressure loss tripping function more reliable.

[0115] See also Figure 4 and Figure 11 , the ventilation mechanism includes:

[0116] The first air storage box 701 is fixed to the side wall of the housing 11 , and a first sliding plate 707 is slidably connected inside the first air storage box 701 .

[0117] The second air storage box 702 is located below the first air storage box 701 and is fixed to the side wall of the shell 11. A second sliding plate 708 is slidably connected to the second air storage box 702.

[0118] The first air extraction pipe 703 connects the first air storage tank 701 and the housing 11 , and a first one-way valve is provided in the first air extraction pipe 703 . The conducting direction of the first one-way valve is from the housing 11 to the first air storage tank 701 .

[0119] The first exhaust pipe 704 is connected to the side wall of the first air storage box 701, and a second one-way valve is provided in the first exhaust pipe 704. The conducting direction of the second one-way valve is from the first air storage box 701 to the outside.

[0120] The second air extraction pipe 705 connects the second air storage tank 702 and the shell 11 , and a third one-way valve is provided in the second air extraction pipe 705 . The conducting direction of the third one-way valve is from the shell 11 to the second air storage tank 702 .

[0121] The second exhaust pipe 706 connects the second air storage tank 702 and the housing 11 .

[0122] The opening and closing mechanism is provided on the side wall of the second exhaust pipe 706 and is used to control the opening and closing of the second exhaust pipe 706 .

[0123] The first movable plate 710 is slidably connected to the side wall of the housing 11 and is fixed to the first sliding plate 707 and the second sliding plate 708 via a connecting rod 709 .

[0124] The second pushing mechanism is arranged above the first movable plate 710, and is used to push the first movable plate 710 to move up and down. When the cover plate 12 is closed, the cover plate 12 is moved by the moving mechanism. After the cover plate 12 is closed, when the third movable plate 402 continues to move, the third elastic member 405 is compressed. At this time, the distance between the third movable plate 402 and the first connecting block 406 gradually becomes smaller. At this time, the first movable plate 710 is pushed downward by the second pushing mechanism. At the same time, the first sliding plate 707 and the second sliding plate 708 are driven to move downward synchronously through the connecting rod 709. At this time, the first one-way valve is opened and the second one-way valve is closed, so that the air in the housing 11 can be sucked into the first air storage box 701 through the first exhaust pipe 703 for temporary storage. At the same time, when the second sliding plate 708 moves downward, it can squeeze the protective gas stored in the second air storage box 702 and open the opening and closing mechanism, so that the protective gas in the second air storage box 702 can be squeezed into the housing 11 through the second exhaust pipe 706, which can protect the vehicle-mounted circuit breaker body 1, ensure the use effect and life of the vehicle-mounted circuit breaker body 1, and thus make the pressure-loss tripping function more reliable.

[0125] See also Figure 3 , the lubrication mechanism includes:

[0126] A plurality of fuel injection pipes 501 are fixedly inserted into the side wall of the cover plate 12 , and the upper end of each fuel injection pipe 501 is connected to a first connecting pipe 506 .

[0127] The oil supply cover 503 is fixed to the top of the cover plate 12 .

[0128] The second movable plate 507 is slidably connected to the oil supply cover 503 and is connected to the inner wall of the oil supply cover 503 through a reset member 508. The reset member 508 can be a spring, and the two ends of the reset member 508 are respectively fixed to the second movable plate 507 and the inner wall of the oil supply cover 503.

[0129] The second connecting pipe 505 connects the oil supply cover 503 and the first connecting pipe 506 , and a fourth one-way valve is provided in the second connecting pipe 505 . The conducting direction of the fourth one-way valve is from the oil supply cover 503 to the first connecting pipe 506 .

[0130] The oil storage tank 502 is fixed above the oil supply cover 503 and is connected to the oil supply cover 503 through the oil inlet hole 504.

[0131] The movable assembly is arranged on the side wall of the shell 11 away from the first air storage box 701, so that when the cover plate 12 is closed to the shell 11, the second movable plate 507 can be moved, which is used to move the second movable plate 507. When vibration occurs, the second movable plate 507 can be driven to move back and forth in the oil supply cover 503 by the movable assembly. When the second movable plate 507 moves toward the oil supply cover 503, the oil inlet hole 504 can be blocked first, and then the lubricating oil in the oil supply cover 503 is squeezed and sprayed onto the card slot 101 and the toggle switch 102 through the second connecting pipe 505 and the first connecting pipe 506 through the oil spray pipe 501, so that the effect of the pressure loss tripping is better. When the second movable plate 507 moves to reset in the direction away from the oil supply cover 503, the lubricating oil in the oil storage tank 502 can enter the oil supply cover 503 through the oil inlet hole 504.

[0132] See also Figure 5 , the mobile components include:

[0133] The supporting block 601 is fixed to the side wall of the housing 11 .

[0134] The rotating rod 603 is rotated on the side wall of the supporting block 601 via the rotating shaft 602 , and a sliding groove 610 is formed on the side wall of the rotating rod 603 .

[0135] The moving rod 604 is inserted into the side wall of the housing 11 , and one end of the moving rod 604 located inside the housing 11 is fixedly connected to a conical cover 605 .

[0136] The ball 607 is inserted into the conical cover 605 and fixed to the top of the counterweight plate 17 through the L-shaped block 606.

[0137] The second elastic member 608 is sleeved on the side wall of the movable rod 604 and is located between the shell 11 and the conical cover 605. The second elastic member 608 can be a spring, and the two ends of the second elastic member 608 are fixed to the shell 11 and the conical cover 605 respectively.

[0138] The first push pin 611 is inserted into the sliding groove 610 and fixed to the end of the moving rod 604 away from the conical cover 605 through the second U-shaped block 609 .

[0139] The first handle 612 is fixed to the side wall of the second movable plate 507 through the support plate 613. When in use, after the vehicle-mounted circuit breaker body 1 is clamped and limited, the counterweight plate 17 can move downward along the fixed cover 16. At the same time, the ball 607 is driven downward by the L-shaped block 606, so that the ball 607 moves to the center position of the conical cover 605. At this time, the conical cover 605 can move toward the direction close to the ball 607 under the action of the second elastic member 608. At the same time, the first push pin 611 is driven to slide in the slide groove 610 by the moving rod 604 and the second U-shaped block 609, thereby pushing the rotating rod 603 to rotate counterclockwise along the rotating shaft 602 to a vertical state. During use, when vibration occurs, the counterweight plate 17 can be in the fixed cover 16 It moves reciprocatingly up and down. When the counterweight plate 17 moves upward, the L-shaped block 606 can drive the ball 607 to move upward and abut against the inner wall of the conical cover 605, thereby pushing the conical cover 605 to move in the direction close to the shell 11. At the same time, the first push pin 611 is driven to slide in the slide groove 610 through the moving rod 604 and the second U-shaped block 609. At the same time, the second elastic member 608 is compressed, causing the rotating rod 603 to rotate clockwise and abut against the support plate 613, thereby pushing the second movable plate 507 to slide into the oil supply cover 503. The reset member 508 is compressed. When the counterweight plate 17 moves downward, the second movable plate 507 can move and reset under the action of the reset member 508. This reciprocating process can make the second movable plate 507 move back and forth in the oil supply cover 503.

[0140] See also Figure 3 and Figure 10 , the mobile mechanism includes:

[0141] The third movable plate 402 is connected to the side wall of the housing 11 through the movable module 401. The movable module 401 is well known in the art and will not be described in detail here.

[0142] The two second sets of rods 403 are fixed to the side walls of the third movable plate 402 .

[0143] The two second sleeves 404 are sleeved on the side walls of the two second sleeve rods 403 and fixed to the cover plate 12 via the first connecting block 406 .

[0144] Two third elastic members 405 are sleeved on the side walls of the two second sleeves 404, and the third elastic members 405 are located between the first connecting block 406 and the third movable plate 402. The third elastic member 405 can be a spring, and the two ends of the third elastic member 405 are respectively fixed to the first connecting block 406 and the third movable plate 402. The third movable plate 402 is driven to move by the moving module 401. At the same time, the cover plate 12 is driven to move by the third elastic member 405. After the cover plate 12 is closed, when the third movable plate 402 continues to move, the third elastic member 405 is compressed.

[0145] See also Figure 2 、 Figure 6 and Figure 8 , the first driving mechanism includes:

[0146] The second fixing block 301 is fixed above the annular tube 13 .

[0147] The two third rods 302 are fixed to the side walls of the second fixing block 301 .

[0148] The two third sleeves 303 are sleeved on the side walls of the two third sleeve rods 302 .

[0149] The pushing block 306 is fixed to the end of the third sleeve 303 away from the second fixing block 301 through the second connecting block 308 . The side wall of the pushing block 306 is provided with an inclined surface 307 so that the first U-shaped block 201 can slide on the inclined surface 307 .

[0150] The two fourth elastic members 304 are sleeved on the side walls of the two third sleeves 303, and the fourth elastic members 304 are located between the second fixed block 301 and the second connecting block 308. The fourth elastic member 304 can be a spring, and the two ends of the fourth elastic member 304 are respectively fixed to the second fixed block 301 and the second connecting block 308.

[0151] The push rod 305 is fixed to the side wall of the second connecting block 308 and a conical surface 309 is provided at the end of the push rod 305 away from the second connecting block 308. When the cover plate 12 is against the conical surface 309, the push rod 305 can be pushed to move toward the second fixed block 301. At the same time, the fourth elastic member 304 is compressed and drives the push block 306 to move synchronously, so that the first U-shaped block 201 gradually disengages from the inclined surface 307. At this time, the counterweight plate 17 can move downward along the fixed cover 16 under the action of gravity.

[0152] See also Figure 10 , the second driving mechanism includes:

[0153] The pushing plate 802 slides on the side wall of the first connecting block 406 through the first guide rail 801 and slides on the top of the first moving plate 710 through the second guide rail 806 .

[0154] The inclined groove 803 is formed on the side wall of the pushing plate 802 .

[0155] The second pushing pin 805 is inserted into the inclined groove 803 and fixed to the bottom of the third movable plate 402 through the L-shaped frame 804. The distance between the third movable plate 402 and the first connecting block 406 gradually becomes smaller. At this time, the second pushing pin 805 can be driven by the L-shaped frame 804 to slide upward along the inclined groove 803, thereby pushing the pushing plate 802 to move downward along the first guide rail 801. At the same time, the connecting rod 709 is driven downward by the second guide rail 806 and the first movable plate 710.

[0156] See also Figure 1 and Figure 7 A vehicle-mounted circuit breaker with a pressure-loss tripping function, a toggle mechanism is arranged on the side wall of the vehicle-mounted circuit breaker body 1, and is used to toggle the toggle switch 102.

[0157] The toggle mechanism includes:

[0158] The two fourth sleeves 902 are fixed to the side walls of the vehicle-mounted circuit breaker body 1 through the L-shaped plate 901 .

[0159] The two fourth sleeve rods 903 are inserted into the two fourth sleeve tubes 902 .

[0160] Two L-shaped toggle plates 906 are located on both sides of the toggle switch 102 and are fixed to the lower end of the fourth rod 903 through the U-shaped plate 905 .

[0161] The L-shaped rod 907 is fixed to the side wall of the fourth sleeve rod 903 through the third connecting plate 904 .

[0162] The rubber ring 908 is sleeved on the side wall of the L-shaped rod 907 and fixedly embedded in the bottom of the housing 11. After the cover 12 is closed, when the toggle switch 102 needs to be closed, the L-shaped rod 907 is pushed upward, and the fourth rod 903 can be driven to move upward along the fourth sleeve 902 through the third connecting plate 904, and the toggle plate 906 can be driven to move through the U-shaped plate 905, so that the toggle switch 102 can be closed. Moreover, after the under-pressure tripping is completed, the toggle switch 102 can also be pushed to close the switch, making the closing more convenient and quick.

[0163] See also Figure 4 and Figure 11 , the opening and closing mechanisms include:

[0164] The rectangular cover 1001 is fixedly inserted into the side wall of the second exhaust pipe 706 and communicates with the second exhaust pipe 706 .

[0165] The sealing plate 1002 is slidably connected to the rectangular cover 1001 and is connected to the rectangular cover 1001 via a fifth elastic member 1004 .

[0166] The circular hole 1003 is formed on the side wall of the sealing plate 1002 so that the circular hole 1003 can overlap with the cross section of the second exhaust pipe 706 .

[0167] The inclined plate 1006 is fixed to the side wall of the connecting rod 709 through the connecting frame 1005, so that the sealing plate 1002 can slide on the side wall of the inclined plate 1006. When the connecting rod 709 moves downward, the inclined plate 1006 can be driven downward by the connecting frame 1005. After the air in the shell 11 is exhausted, the inclined plate 1006 can be against the side wall of the sealing plate 1002, thereby pushing the sealing plate 1002 to slide into the rectangular cover 1001, so that the circular hole 1003 coincides with the second exhaust pipe 706. At the same time, the fifth elastic member 1004 is compressed. At this time, the protective gas in the second air storage box 702 can be squeezed into the shell 11 through the second exhaust pipe 706.

[0168] Working principle: When in use, the vehicle-mounted circuit breaker body 1 is placed in the annular tube 13, and then the cover plate 12 is moved and closed by the moving mechanism. When the cover plate 12 abuts against the conical surface 309, the push rod 305 can be pushed to move in the direction close to the second fixed block 301. At the same time, the fourth elastic member 304 is compressed and drives the push block 306 to move synchronously, so that the first U-shaped block 201 gradually separates from the inclined surface 307. At this time, the counterweight plate 17 can move downward along the fixed cover 16 under the action of gravity, thereby squeezing the hydraulic oil in the annular tube 13. Under the action of hydraulic pressure, the guide rod 14 can be pushed to move, and the multiple V-shaped plates 15 can be moved in the direction close to the vehicle-mounted circuit breaker body 1 and abut against the side wall of the vehicle-mounted circuit breaker body 1, so that the vehicle-mounted circuit breaker body 1 can be clamped and limited in the center, making the installation of the vehicle-mounted circuit breaker body 1 more convenient and quick, and can ensure the clamping force of the vehicle-mounted circuit breaker body 1 and ensure the clamping effect.

[0169] When the cover 12 is closed, the third movable plate 402 is moved by the moving module 401, and at the same time, the cover 12 is moved by the third elastic member 405. After the cover 12 is closed, when the third movable plate 402 continues to move, the third elastic member 405 is compressed. At this time, the distance between the third movable plate 402 and the first connecting block 406 gradually becomes smaller. At this time, the second pushing pin 805 can be driven by the L-shaped frame 804 to slide upward along the inclined groove 803, thereby pushing the pushing plate 802 to move downward along the first guide rail 801. At the same time, the connecting rod 709 is driven downward by the second guide rail 806 and the first movable plate 710. When the connecting rod 709 moves downward, it can drive the first sliding plate 707 and the second sliding plate 708 to move downward synchronously. At this time, the first one-way valve is opened and the second one-way valve is closed, so that the air in the shell 11 can be When the second sliding plate 708 moves downward, the protective gas stored in the second gas tank 702 can be squeezed, and when the connecting rod 709 moves, the inclined plate 1006 can be driven downward by the connecting frame 1005. After the air in the shell 11 is exhausted, the inclined plate 1006 can be against the side wall of the sealing plate 1002, thereby pushing the sealing plate 1002 to slide into the rectangular cover 1001, so that the circular hole 1003 coincides with the second exhaust pipe 706. At the same time, the fifth elastic member 1004 is compressed. At this time, the protective gas in the second gas tank 702 can be squeezed into the shell 11 through the second exhaust pipe 706, which can protect the vehicle-mounted circuit breaker body 1, ensure the use effect and life of the vehicle-mounted circuit breaker body 1, and thus make the pressure loss tripping function more reliable.

[0170] After the cover 12 is closed, when the toggle switch 102 needs to be closed, the L-shaped rod 907 is pushed upward, which can drive the fourth set of rods 903 to move upward along the fourth sleeve 902 through the third connecting plate 904, and drive the toggle plate 906 to move through the U-shaped plate 905, so that the toggle switch 102 can be closed.

[0171] When the cover 12 is opened, the push block 306 can be moved and reset under the action of the fourth elastic member 304 and the inclined surface 307 can be abutted against the first U-shaped block 201, thereby pushing the counterweight plate 17 upward. At this time, the multiple V-shaped plates 15 can be separated from the vehicle-mounted circuit breaker body 1, and the disassembly is more convenient and quick. At the same time, the first sliding plate 707 and the second sliding plate 708 are driven upward by the connecting rod 709. At this time, the protective gas in the housing 11 can be drawn back to the second air storage box 702 through the second exhaust pipe 705 for temporary storage, and the air in the first air storage box 701 can be discharged through the first exhaust pipe 704.

[0172] After the vehicle-mounted circuit breaker body 1 is clamped and limited, the counterweight plate 17 can move downward along the fixed cover 16. At the same time, the ball 607 is driven downward by the L-shaped block 606, so that the ball 607 moves to the center position of the conical cover 605. At this time, the conical cover 605 can move toward the direction close to the ball 607 under the action of the second elastic member 608. At the same time, the first push pin 611 is driven to slide in the slide groove 610 by the moving rod 604 and the second U-shaped block 609, thereby pushing the rotating rod 603 to rotate counterclockwise along the rotating shaft 602 to a vertical state.

[0173] During use, when the vehicle vibrates, the housing 11 and the cover plate 12 are driven to vibrate, and then the annular tube 13 is driven to vibrate. Since the V-shaped plate 15 abuts against the side wall of the vehicle-mounted circuit breaker body 1, the V-shaped plate 15 can be pushed to move in the direction close to the annular tube 13. At the same time, the guide rod 14 moves into the annular tube 13. Under the action of the hydraulic pressure, the counterweight plate 17 can be pushed to move upward along the fixed cover 16, which can have a buffering effect. At the same time, when the counterweight plate 17 moves upward, it can drive the first U-shaped block 201 to slide and rub upward along the side wall of the friction block 206. Under the action of the first elastic member 205, the friction block 206 can be abutted against the side wall of the first U-shaped block 201, so that the friction effect is better, thereby consuming the energy during vibration, and achieving a better shock absorption effect, thereby ensuring the use effect and life of the vehicle-mounted circuit breaker body 1, and thus making the pressure loss tripping function more reliable.

[0174] At the same time, the counterweight plate 17 can move back and forth up and down in the fixed cover 16. When the counterweight plate 17 moves upward, it can drive the ball 607 to move upward through the L-shaped block 606 and abut against the inner wall of the conical cover 605, thereby pushing the conical cover 605 to move in the direction close to the shell 11. At the same time, the first push pin 611 is driven to slide in the slide groove 610 through the moving rod 604 and the second U-shaped block 609. At the same time, the second elastic member 608 is compressed, causing the rotating rod 603 to rotate clockwise and abut against the support plate 613, thereby pushing the second movable plate 507 to slide into the oil supply cover 503, and the reset member 508 is compressed. When the counterweight plate 17 moves downward, the second The movable plate 507 can be moved and reset under the action of the reset member 508, and so on, so that the second movable plate 507 can move back and forth in the oil supply cover 503. When the second movable plate 507 moves toward the oil supply cover 503, the oil inlet hole 504 can be blocked first, and then the lubricating oil in the oil supply cover 503 is squeezed, and then passed through the second connecting pipe 505 and the first connecting pipe 506 and then sprayed onto the slot 101 and the toggle switch 102 through the oil spray pipe 501, so that the effect of the pressure loss tripping is better. When the second movable plate 507 moves and resets in the direction away from the oil supply cover 503, the lubricating oil in the oil storage tank 502 can enter the oil supply cover 503 through the oil inlet hole 504.

[0175] After the under-voltage tripping is completed, the toggle switch 102 can also be pushed to perform the closing operation, making the closing operation more convenient and quick.

[0176] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0177] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A vehicle-mounted circuit breaker with a pressure loss tripping function, comprising a housing (11) arranged outside the vehicle-mounted circuit breaker body (1), the vehicle-mounted circuit breaker body (1) comprising a slot (101), and a toggle switch (102) arranged in the slot (101), characterized in that: Also includes: A moving mechanism is arranged on a side wall of the housing (11), and an L-shaped cover plate (12) is connected to the moving mechanism, so that the cover plate (12) can move along the housing (11) to open and close the housing (11); A damping mechanism is provided in the housing (11) and is used for limiting and damping the vehicle-mounted circuit breaker body (1); a lubrication mechanism, arranged on a side wall of the cover plate (12), so as to lubricate the toggle switch (102) when the cover plate (12) is closed to the housing (11); A ventilation mechanism, arranged on a side wall of the housing (11) and located on the same side as the moving mechanism, for exhausting air from the housing (11) and supplying protective gas; The ventilation mechanism comprises: A first air storage box (701) is fixed to the side wall of the housing (11), and a first sliding plate (707) is slidably connected inside the first air storage box (701); A second air storage box (702) is located below the first air storage box (701) and is fixed to the side wall of the housing (11), and a second sliding plate (708) is slidably connected in the second air storage box (702); a first air extraction pipe (703) communicating with the first air storage box (701) and the housing (11), and a first one-way valve being provided in the first air extraction pipe (703); A first exhaust pipe (704) is connected to the side wall of the first air storage box (701), and a second one-way valve is provided in the first exhaust pipe (704); A second air extraction pipe (705) is connected to the second air storage box (702) and the housing (11), and a third one-way valve is provided in the second air extraction pipe (705); A second exhaust pipe (706) communicating with the second air storage tank (702) and the housing (11); an opening and closing mechanism, arranged on a side wall of the second exhaust pipe (706), and used for controlling the opening and closing of the second exhaust pipe (706); A first movable plate (710) is slidably connected to the side wall of the housing (11) and is fixed to the first sliding plate (707) and the second sliding plate (708) via a connecting rod (709); The second pushing mechanism is arranged above the first movable plate (710) and is used to push the first movable plate (710) to move up and down.

2. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 1, characterized in that: The shock absorbing mechanism comprises: an annular tube (13) fixedly connected to the inner wall of the housing (11), and the annular tube (13) is filled with hydraulic oil; Multiple groups of guide rods (14) are inserted into the side wall of the annular tube (13) close to the vehicle-mounted circuit breaker body (1), and the number of each group of guide rods (14) is two; A plurality of V-shaped plates (15) fixedly connected to one end of each set of guide rods (14) close to the vehicle-mounted circuit breaker body (1); A fixed cover (16) connected to the top of the annular tube (13); A counterweight plate (17) is slidably connected to the fixed cover (16); a friction mechanism, disposed on the top of the annular tube (13), for frictionally controlling the movement of the counterweight plate (17); The friction mechanism comprises: A first U-shaped block (201) is fixed to the top of the counterweight plate (17); A first fixing block (202) is fixed to the top of the annular tube (13); Two first sleeves (203) fixed to the side walls of the first fixing block (202); Two first sleeve rods (204) are inserted into the two first sleeve tubes (203); A friction block (206) is fixedly connected to an end of the first sleeve rod (204) away from the first fixed block (202) and abuts against a side wall of the first U-shaped block (201); Two first elastic members (205) are sleeved on the side walls of the two first sleeves (203), and the first elastic members (205) are located between the first fixing block (202) and the friction block (206); The first pushing mechanism is arranged above the annular tube (13) and is used to push the first U-shaped block (201) to move upward.

3. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 1, characterized in that: The lubrication mechanism comprises: A plurality of oil injection pipes (501) are fixedly inserted into the side wall of the cover plate (12), and the upper end of each oil injection pipe (501) is connected to a first connecting pipe (506); An oil supply cover (503) is fixed to the top of the cover plate (12); A second movable plate (507) is slidably connected to the oil supply cover (503) and is connected to the inner wall of the oil supply cover (503) via a reset member (508); A second connecting pipe (505) is connected to the oil supply cover (503) and the first connecting pipe (506), and a fourth one-way valve is provided in the second connecting pipe (505); An oil storage tank (502) is fixed above the oil supply cover (503) and is in communication with the oil supply cover (503) through an oil inlet hole (504); The movable assembly is arranged on a side wall of the housing (11) away from the first air storage box (701), so that when the cover plate (12) is closed to the housing (11), the second movable plate (507) can be moved.

4. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 3, characterized in that: The mobile component includes: A support block (601) is fixed to a side wall of the housing (11); A rotating rod (603) is rotated on the side wall of the support block (601) via a rotating shaft (602), and a sliding groove (610) is provided on the side wall of the rotating rod (603); A moving rod (604) is inserted into the side wall of the housing (11), and one end of the moving rod (604) located inside the housing (11) is fixedly connected to a conical cover (605); A sphere (607) is inserted into the conical cover (605) and fixed to the top of the counterweight plate (17) via an L-shaped block (606); A second elastic member (608) is sleeved on the side wall of the movable rod (604), and the second elastic member (608) is located between the housing (11) and the conical cover (605); A first push pin (611) is inserted into the slide groove (610) and fixed to an end of the moving rod (604) away from the conical cover (605) through a second U-shaped block (609); The first handle (612) is fixed to the side wall of the second movable plate (507) via a support plate (613).

5. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 1, characterized in that: The moving mechanism comprises: a third movable plate (402) connected to the side wall of the housing (11) via a movable module (401); Two second sets of rods (403) fixed to the side walls of the third movable plate (402); Two second sleeves (404) are sleeved on the side walls of the two second sleeve rods (403) and fixed to the cover plate (12) via a first connecting block (406); The two third elastic members (405) are sleeved on the side walls of the two second sleeves (404), and the third elastic members (405) are located between the first connecting block (406) and the third movable plate (402).

6. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 2, characterized in that: The first pushing mechanism includes: A second fixing block (301) is fixed above the annular tube (13); Two third sets of rods (302) fixed to the side walls of the second fixing block (301); Two third sleeves (303) are sleeved on the side walls of the two third sleeve rods (302); A pushing block (306) is fixed to an end of the third sleeve (303) away from the second fixing block (301) through a second connecting block (308); a side wall of the pushing block (306) is provided with an inclined surface (307) so that the first U-shaped block (201) can slide on the inclined surface (307); Two fourth elastic members (304) are sleeved on the side walls of the two third sleeves (303), and the fourth elastic members (304) are located between the second fixing block (301) and the second connecting block (308); The push rod (305) is fixed to the side wall of the second connecting block (308), and the end of the push rod (305) away from the second connecting block (308) is provided with a tapered surface (309).

7. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 5, characterized in that: The second pushing mechanism includes: A push plate (802) slides on the side wall of the first connecting block (406) via a first guide rail (801) and slides on the top of the first movable plate (710) via a second guide rail (806); An inclined groove (803) is provided on the side wall of the push plate (802); The second push pin (805) is inserted into the inclined groove (803) and fixed to the bottom of the third movable plate (402) through the L-shaped frame (804).

8. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 1, characterized in that: Also includes: A toggle mechanism, provided on a side wall of the vehicle-mounted circuit breaker body (1), for toggling the toggle switch (102); The toggle mechanism comprises: Two fourth sleeves (902) are fixed to the side walls of the vehicle-mounted circuit breaker body (1) via L-shaped plates (901); Two fourth sleeve rods (903) are inserted into the two fourth sleeve tubes (902); Two L-shaped toggle plates (906) are located on both sides of the toggle switch (102) and are fixed to the lower end of the fourth set of rods (903) via a U-shaped plate (905); An L-shaped rod (907) is fixed to the side wall of the fourth set of rods (903) via a third connecting plate (904); The rubber ring (908) is sleeved on the side wall of the L-shaped rod (907) and fixedly embedded in the bottom of the housing (11).

9. The vehicle-mounted circuit breaker with a pressure loss tripping function according to claim 1, characterized in that: The opening and closing mechanism comprises: A rectangular cover (1001) is fixedly inserted into the side wall of the second exhaust pipe (706) and is in communication with the second exhaust pipe (706); A sealing plate (1002) is slidably connected to the rectangular cover (1001) and is connected to the rectangular cover (1001) via a fifth elastic member (1004); A circular hole (1003) is formed on the side wall of the sealing plate (1002), so that the circular hole (1003) can coincide with the cross section of the second exhaust pipe (706); The inclined plate (1006) is fixed to the side wall of the connecting rod (709) via the connecting frame (1005), so that the sealing plate (1002) can slide on the side wall of the inclined plate (1006).

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