Novel fuse tripping device

Abstract

The utility model discloses a novel fuse tripping device, which relates to the technical field of fuses and comprises a fuse, the top of the fuse is fixedly connected with an extension tripping box in a penetrating manner, the front side of the fuse is provided with a load switch, and the bottom of the inner wall of the extension tripping box is fixedly provided with a base plate. A spiral electromagnet is fixedly installed at the top of the base plate, the input end of the spiral electromagnet penetrates to the front side of the extension tripping box and is fixedly connected with an input copper pipe, the output end of the spiral electromagnet is fixedly connected with an L-shaped output copper pipe, and a reset spring is fixedly installed at the top of the base plate. And a metal pressing column is fixedly mounted at the top of the reset spring. According to the utility model, through mutual cooperation among the spiral electromagnet, the reset spring, the metal pressing column, the pressing rod and the insulating rubber rod, when a short circuit occurs, the spiral electromagnet in the extension tripping box can be used for rapid tripping processing and timely power-off, so that an error phenomenon is avoided, and power utilization safety is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuse technology field, concretely relates to a novel fuse tripping device. BACKGROUND

[0002] The load switch fuse combination electric appliance includes a load switch, a interlocking tripping mechanism and a fuse device, when the current exceeds the specified value, the fuse in the fuse device will melt its internal fuse with the heat generated by itself, and the striker will be ejected to trigger the interlocking tripping mechanism to trip, finally complete the opening operation, and achieve the purpose of protecting the safety of electricity. In view of the following problems existing in the prior art:

[0003] Because the existing fuse tripping device is achieved by the striker needle of the fuse pushing the striker top plate to trip, due to the limited impact force of the striker needle, the displacement of the striker top plate is small and prone to backward displacement, which can easily lead to the tripping force of the load switch fuse being too small to make the tripping mechanism normally trip when the fuse is melted, thus bringing safety hazards to the circuit. UTILITY MODEL CONTENTS

[0004] The utility model provides a novel fuse tripping device to solve the problems in the above background technology.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] A novel fuse tripping device, including fuse, the top of fuse is fixedly connected with extension tripping box, the front side of fuse is provided with load switch, the inner wall bottom of extension tripping box is fixedly installed with base plate, the top of base plate is fixedly installed with helical solenoid, the input end of helical solenoid penetrates to the front side of extension tripping box and is fixedly connected with input copper pipe, the output end of helical solenoid is fixedly connected with L-shaped output copper pipe, the top of base plate is fixedly installed with reset spring, the top of reset spring is fixedly installed with metal pressure column, reset spring and metal pressure column are all located in the inside of helical solenoid, the bottom of metal pressure column is fixedly installed with pressure rod, and the pressure rod is located in the inside of reset spring.

[0007] The further improvement of the utility model technical scheme is that: the left and right sides between the inner wall of fuse are movably installed with rotating rod, the front side of rotating rod is fixedly installed with inclined pressing plate, the rear side of rotating rod is fixedly installed with inclined elastic plate, the top of inclined elastic plate is fixedly installed with extension vertical plate, the bottom end of pressure rod penetrates to the inner chamber of fuse and is fixedly installed with insulating rubber rod, and the top of insulating rubber rod and extension vertical plate are overlapped.

[0008] The further improvement in the utility model technical scheme lies in that the vertical part of the L-shaped output copper pipe is fixedly connected with an L-shaped input copper sheet above the rear side of the inner cavity of the fuse, the bottom of the L-shaped input copper sheet is overlapped with the top plane of the inclined elastic plate, the rear side of the load switch is fixedly installed with a metal elastic sheet, the bottom of the metal elastic sheet is movably connected with the top front side of the inclined pressing plate, the inner wall bottom of the fuse is fixedly installed with an L-shaped output copper sheet, and the top of the L-shaped output copper sheet is overlapped with the bottom front side of the inclined pressing plate.

[0009] The further improvement in the utility model technical scheme lies in that the top rear side of the inclined pressing plate is fixedly installed with a reset tension spring, and the top of the reset tension spring is fixedly connected with the top front side of the fuse.

[0010] The further improvement in the utility model technical scheme lies in that the inner wall left side top of the extension tripping box is movably installed with a maintenance dismounting cover, the inner wall left side bottom of the extension tripping box is fixedly installed with a limiting baffle, the right side bottom of the maintenance dismounting cover is overlapped with the left side of the limiting baffle, and the limiting baffle is provided with left-right through locking screw holes.

[0011] The further improvement in the utility model technical scheme lies in that the maintenance dismounting cover is provided with left-right through screw through holes, the screw through holes are left-right through each other in the perpendicular state of the maintenance dismounting cover, the inner ring thread of the screw through hole is installed with a threaded rod, and the left end of the threaded rod is fixedly installed with a dismounting knob and penetrates to the left side of the maintenance dismounting cover.

[0012] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0013] 1. The utility model provides a novel fuse tripping device, through the mutual cooperation between the helical electromagnet, the reset spring, the metal pressing column, the pressing rod and the insulating rubber rod, so that when short circuit occurs, the helical electromagnet in the extension tripping box can be used to quickly perform tripping treatment, power failure is timely, and the phenomenon of mistake is avoided, thereby ensuring the safety of power utilization.

[0014] 2. The utility model provides a novel fuse tripping device, through the mutual cooperation between the maintenance dismounting cover, the limiting baffle, the locking screw hole, the threaded rod and the dismounting knob, so that the extension tripping box can be internally quickly maintained, the whole fuse does not need to be removed, and the maintenance efficiency of the tripping device is improved. DRAWINGS

[0015] Figure 1 It is the whole schematic view of the utility model structure.

[0016] Figure 2 It is the extension tripping box sectional view schematic view of the utility model structure.

[0017] Figure 3 The utility model discloses a fuse cross section schematic view of structure;

[0018] Figure 4 The utility model discloses a maintenance dismounting cover opening schematic view of structure;

[0019] Figure 5 The utility model discloses a maintenance dismounting cover cross section schematic view of structure.

[0020] In the drawing: 1, fuse; 11, rotating rod; 111, inclined pressing plate; 112, inclined elastic plate; 113, extension vertical plate; 12, reset tension spring; 13, L-shaped output copper sheet; 2, extension tripping box; 21, base plate; 22, helical electromagnet; 23, input copper pipe; 24, reset spring; 25, metal pressing column; 26, pressing rod; 261, insulating rubber rod; 27, L-shaped output copper pipe; 271, L-shaped input copper sheet; 28, maintenance dismounting cover; 281, threaded through hole; 282, threaded rod; 283, dismounting knob; 29, limiting baffle; 291, locking threaded hole; 3, load switch; 31, metal elastic sheet. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0022] As shown in Figure 1 , Figure 2 The utility model provides a novel fuse tripping device, including fuse 1, the top of fuse 1 is fixedly connected with extension tripping box 2, and the front side of fuse 1 is provided with load switch 3, the inner wall bottom of extension tripping box 2 is fixedly installed with base plate 21, the top of base plate 21 is fixedly installed with helical electromagnet 22, the input end of helical electromagnet 22 is fixedly connected with input copper pipe 23 and is connected with the front side of extension tripping box 2, the output end of helical electromagnet 22 is fixedly connected with L-shaped output copper pipe 27, the top of base plate 21 is fixedly installed with reset spring 24, the top of reset spring 24 is fixedly installed with metal pressing column 25, and reset spring 24 and metal pressing column 25 are all located on the inside of helical electromagnet 22, the bottom of metal pressing column 25 is fixedly installed with pressing rod 26, and pressing rod 26 is located on the inside of reset spring 24;

[0023] Normal use of the current will be transmitted to the input copper pipe 23 through the spiral electromagnet 22, and the normal magnetic force is generated, the metal pressure column 25 and the pressure rod 26 will not be displaced, and then the current can pass through the L-shaped output copper pipe 27 into the cavity of the fuse 1. When short-circuiting, the current passing through the input copper pipe 23 into the spiral electromagnet 22 will sharply increase, thereby increasing the magnetic force of the spiral electromagnet 22, thereby driving the overall metal pressure column 25 to press the return spring 24, and the pressure rod 26 moves quickly into the cavity of the fuse 1.

[0024] As shown in Figure 3 , the inner wall of the fuse 1 is movably installed between the left and right sides of the rotating rod 11, the front side of the rotating rod 11 is fixedly installed with an inclined pressing plate 111, the rear side of the rotating rod 11 is fixedly installed with an inclined elastic plate 112, the top of the inclined elastic plate 112 is fixedly installed with an extension stand 113, the bottom end of the pressure rod 26 penetrates into the inner cavity of the fuse 1 and is fixedly installed with an insulating rubber rod 261, the insulating rubber rod 261 is overlapped with the top of the extension stand 113, the vertical of the L-shaped output copper pipe 27 penetrates into the inner cavity of the fuse 1 and is fixedly connected with an L-shaped input copper sheet 271, the bottom of the L-shaped input copper sheet 271 is overlapped with the top of the inclined elastic plate 112, the rear side of the load switch 3 is fixedly installed with a metal elastic sheet 31, the bottom of the metal elastic sheet 31 is movably connected with the top front side of the inclined pressing plate 111, the bottom of the inner wall of the fuse 1 is fixedly installed with an L-shaped output copper sheet 13, the top of the L-shaped output copper sheet 13 is overlapped with the bottom front side of the inclined pressing plate 111, the top rear side of the inclined pressing plate 111 is fixedly installed with a reset tension spring 12, the top of the reset tension spring 12 is fixedly connected with the top front side of the fuse 1;

[0025] The normal current passing through the L-shaped output copper pipe 27 will conduct electricity by the L-shaped input copper sheet 271 and the inclined elastic plate 112, and will be transmitted to the L-shaped output copper sheet 13 through the inclined pressing plate 111 to flow out. When short-circuiting, the pressure rod 26 quickly drops, and the insulating rubber rod 261 can be used to extrude the extension stand 113, so that the extension stand 113 and the L-shaped input copper sheet 271 are quickly separated and disconnected, and the metal elastic sheet 31 is lifted upward, so that the load switch 3 is popped down and the reset tension spring 12 is pulled. After the circuit is repaired, the pressure rod 26 will be moved upward again, so that the inclined pressing plate 111 is reset by the rebound of the reset tension spring 12 and is overlapped with the L-shaped output copper sheet 13 to be electrified, and the soft metal elastic sheet 31 can be used to lift the metal elastic sheet 31 again.

[0026] As shown in Figure 4 , Figure 5As shown, an inspection and disassembly cover 28 is movably installed on the upper left side of the inner wall of the extended trip box 2, and a limit baffle 29 is fixedly installed on the lower left side of the inner wall of the extended trip box 2. The lower right side of the inspection and disassembly cover 28 overlaps with the left side of the limit baffle 29. The limit baffle 29 is provided with a locking threaded hole 291 that passes through left and right. The inspection and disassembly cover 28 is provided with a threaded through hole 281 that passes through left and right. When the inspection and disassembly cover 28 is in a vertical state, the threaded through hole 281 and the locking threaded hole 291 are mutually connected left and right. A threaded rod 282 is installed on the inner circle thread of the threaded through hole 281. The left end of the threaded rod 282 passes through the left side of the inspection and disassembly cover 28 and is fixedly installed with a disassembly knob 283.

[0027] When it is necessary to inspect the interior of the extended trip box 2, it is only necessary to rotate the disassembly knob 283 to drive the threaded rod 282 to rotate in the threaded through hole 281 and move it outward, so that the rear end of the threaded rod 282 is separated from the locking threaded hole 291 opened by the limit baffle 29, and the inspection and disassembly cover 28 can be directly rotated open to expose the interior of the extended trip box 2.

[0028] The working principle of the new fuse tripping device is described in detail below.

[0029] like Figures 1-5 As shown, during normal use, the current will be transmitted to the spiral electromagnet 22 through the input copper tube 23 and generate normal magnetic force. The metal pressure column 25 and the pressure rod 26 will not be displaced, and then the current can enter the inner cavity of the fuse 1 through the L-shaped output copper tube 27. In the event of a short circuit, the current entering the spiral electromagnet 22 after passing through the input copper tube 23 will increase sharply, thereby increasing the magnetic force of the spiral electromagnet 22, thereby driving the entire metal pressure column 25 to press the reset spring 24 and causing the pressure rod 26 to move quickly toward the inner cavity of the fuse 1. Normal current will pass through the L-shaped output copper tube 27 and conduct electricity through the L-shaped input copper sheet 271 and the inclined spring plate 112, and will be transmitted to the L-shaped output copper sheet 13 through the inclined pressure plate 111 to flow out. In the event of a short circuit, as the pressure rod 26 drops rapidly, the insulating rubber rod 261 can be used to press the extension plate 113 The extended vertical plate 113 is squeezed to quickly separate from the L-shaped input copper sheet 271 and cut off the power, and the metal spring piece 31 is pushed upward, so that the load switch 3 is bounced down and the reset spring 12 is pulled. After the circuit is repaired, the pressure rod 26 will move up again, so that the inclined pressure plate 111 is reset by the rebound of the reset spring 12 and reconnected with the L-shaped output copper sheet 13 to energize it. At the same time, the metal spring piece 31 can be pulled up again by the soft metal spring piece 31. When it is necessary to inspect the interior of the extended trip box 2, it is only necessary to rotate the disassembly knob 283 to drive the threaded rod 282 to rotate in the threaded through hole 281 and move outward, so that the rear end of the threaded rod 282 is separated from the locking threaded hole 291 opened in the limit baffle 29, and the inspection and disassembly cover 28 can be directly rotated open to expose the interior of the extended trip box 2.

[0030] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A new type of fuse tripping device comprising a fuse (1), characterized by: The top of the fuse (1) is fixedly connected with an extension tripping box (2), the front side of the fuse (1) is provided with a load switch (3), the inner wall bottom of the extension tripping box (2) is fixedly installed with a base plate (21), the top of the base plate (21) is fixedly installed with a spiral electromagnet (22), the input end of the spiral electromagnet (22) penetrates to the front side of the extension tripping box (2) and is fixedly connected with an input copper pipe (23), the output end of the spiral electromagnet (22) is fixedly connected with an L-shaped output copper pipe (27), the top of the base plate (21) is fixedly installed with a reset spring (24), the top of the reset spring (24) is fixedly installed with a metal pressing column (25), the reset spring (24) and the metal pressing column (25) are located on the inner side of the spiral electromagnet (22), and the bottom of the metal pressing column (25) is fixedly installed with a pressing rod (26).

2. A new type of fuse tripping device according to claim 1, characterized in that: The left and right sides of the inner wall of the fuse (1) are movably installed with a rotating rod (11), the front side of the rotating rod (11) is fixedly installed with an inclined pressing plate (111), the rear side of the rotating rod (11) is fixedly installed with an inclined elastic plate (112), the top of the inclined elastic plate (112) is fixedly installed with an extension vertical plate (113), the bottom end of the pressing rod (26) penetrates to the inner cavity of the fuse (1) and is fixedly installed with an insulating rubber rod (261), and the insulating rubber rod (261) is overlapped with the top of the extension vertical plate (113).

3. A new type of fuse tripping device according to claim 2, characterized in that: The vertical part of the L-shaped output copper pipe (27) penetrates to the inner cavity rear side of the fuse (1) and is fixedly connected with an L-shaped input copper sheet (271), the bottom of the L-shaped input copper sheet (271) is overlapped with the top of the inclined elastic plate (112), the rear side of the load switch (3) is fixedly installed with a metal elastic sheet (31), the bottom of the metal elastic sheet (31) is movably connected with the top front side of the inclined pressing plate (111), the inner wall bottom of the fuse (1) is fixedly installed with an L-shaped output copper sheet (13), and the top of the L-shaped output copper sheet (13) is overlapped with the bottom front side of the inclined pressing plate (111).

4. A new type of fuse tripping device according to claim 3, characterized in that: The top rear side of the inclined pressing plate (111) is fixedly installed with a reset tension spring (12), and the top of the reset tension spring (12) is fixedly connected with the top front side of the fuse (1).

5. A new type of fuse tripping device according to claim 1, characterized in that: The inner wall left side top of the extension tripping box (2) is movably installed with a maintenance dismounting cover (28), the inner wall left side bottom of the extension tripping box (2) is fixedly installed with a limiting baffle (29), the right side bottom of the maintenance dismounting cover (28) is overlapped with the left side of the limiting baffle (29), and the limiting baffle (29) is provided with a left and right through locking screw hole (291).

6. A new type of fuse tripping device according to claim 5, characterized in that: The overhaul dismounting cover (28) is provided with a left-right through threaded through hole (281), the threaded through hole (281) and the locking threaded hole (291) are left-right through each other when the overhaul dismounting cover (28) is in a vertical state, a threaded rod (282) is installed in the inner ring of the threaded through hole (281), and the left end of the threaded rod (282) penetrates to the left side of the overhaul dismounting cover (28) and is fixedly installed with a dismounting knob (283).

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