A safe outdoor drop-out fuse

Abstract

A safety type outdoor drop fuse, comprising a housing and a conductive rod; a collision trigger device, a switch device, a fuse and a power-off device are fixed on the housing; a sleeve is fixed at each end of the housing; fixing rings are fixed on the inner side of the housing corresponding to the two sleeves; two L-shaped support plates slide inside the housing; the fixing rings and the corresponding L-shaped support plates are connected by tension springs; there are two conductive rods, one end of which is fixedly connected to the corresponding L-shaped support plate, and the other end passes through the fixing ring and is slidably connected to the corresponding sleeve; a connecting plate is installed at both ends of the fuse, a contact is provided on the connecting plate, and a contact head cooperating with the contact is provided on the two L-shaped support plates; the switch device is used to drive the two limiting members to move relatively in opposite directions; there are four groups of collision trigger devices, which are respectively fixedly installed on the four side surfaces of the housing and are used to trigger the power-off device to make the limiting members no longer limit the L-shaped support plates; the present invention can automatically cut off the power when the device is impacted or the line is pulled, so as to improve the safety factor.

Description

Technical Field

[0001] The present invention relates to the technical field of fuses, and particularly to a safe outdoor drop-out fuse. Background Art

[0002] A fuse refers to an electrical appliance that melts a fuse element with the heat generated by itself to disconnect the circuit when the current exceeds a specified value; the fuse melts the fuse element with the heat generated by itself after the current exceeds the specified value for a period of time, thereby disconnecting the circuit; a current protector made using this principle; fuses are widely used in high- and low-voltage power distribution systems, control systems, and electrical equipment, as short-circuit and over-current protectors, and are one of the most commonly used protection devices; existing fuses can only play the role of overload protection, and safety accidents are likely to occur when the equipment is impacted or the circuit is pulled during power-on. Therefore, the present invention proposes a safe outdoor drop-out fuse, which can automatically cut off the power when the equipment is impacted or the circuit is pulled, improving the safety factor. Summary of the Invention

[0003] The technical solution adopted by the present invention is: a safe outdoor drop-out fuse, comprising: a housing and a conductive rod; a collision trigger device, a switch device, a fuse, and a power-off device are fixedly installed on the housing; a sleeve is fixedly installed at each end of the housing, the inside of the sleeve is made of a conductive material, and the outside is made of an insulating material; a fixing ring is fixedly installed at the position corresponding to the inner side of each of the two sleeves inside the housing; two L-shaped support plates are slidably installed inside the housing; a tension spring is elastically connected between each fixing ring and the corresponding L-shaped support plate, there are two conductive rods, one end of each conductive rod is fixedly connected to the corresponding L-shaped support plate, and the other end passes through the fixing ring and is slidably connected to the corresponding sleeve; a protrusion for preventing the conductive rod from slipping out is provided at one end of each sleeve, and the other end is fixedly connected to a cable;

[0004] A connecting plate is fixedly installed at each end of the fuse, a contact is provided on each connecting plate, and contacts cooperating with the contacts on the corresponding connecting plate are provided on the two L-shaped support plates respectively;

[0005] Two limit members are slidably installed on the housing, the limit members are used to drive the corresponding L-shaped support plates to move, so that the contacts on each L-shaped support plate are in contact with the contacts on the corresponding connecting plate; the switch device is used to drive the two limit members to move relatively in opposite directions at the same time; there are four groups of collision trigger devices, which are respectively fixedly installed on the four sides of the housing where the sleeves are not installed, and the collision trigger devices are used to trigger the power-off device, so that the limit members no longer limit the L-shaped support plates through the power-off device.

[0006] Further, the switch device includes: a pressing rod and a switch device gear; the pressing rod is slidably mounted on the housing, and a switch device rack is fixedly mounted on the pressing rod; the switch device gear is rotatably mounted on the housing and is meshed with the switch device rack, a lead screw is fixedly mounted on the switch device gear, the lead screw is rotatably mounted on the housing, and the lead screw is meshed with the two limiting members; a limiting block is slidably mounted on the housing and is elastically connected by a spring, and a plurality of grooves cooperating with the limiting block are provided on the switch device rack.

[0007] Further, the limiting member includes: a first rod and a second rod; the first rod is rotatably mounted on the housing; the thread directions at both ends of the lead screw are opposite; the two first rods are respectively meshed with both ends of the lead screw; the first rod is rotatably connected to the second rod and is elastically connected by a torsion spring.

[0008] Further, the power-off device includes: a power-off device bracket and a power-off lever; the power-off device bracket is fixedly mounted on the housing, and a sliding block is slidably mounted on the power-off device bracket; the middle of the power-off lever is rotatably mounted on the housing, the sliding block is rotatably connected to one end of the power-off lever, and the other end of the power-off lever is located above the second rod; a slotted groove is provided on the sliding block, and a sliding member cooperating with the slotted groove is slidably mounted inside the slotted groove, and the sliding member is fixedly connected to the collision trigger device.

[0009] Further, the collision trigger device includes: a collision device; there are four collision devices, which are respectively located on four sides of the housing; a bracket is slidably mounted on the housing and is elastically connected by a spring; the bracket is fixedly connected to the corresponding sliding member; a push rod is fixedly mounted on each collision device, and protrusions for pushing the bracket are provided on two of the push rods; racks are fixedly mounted on the other two push rods; a rotating shaft is rotatably mounted inside the housing, and two gears are fixedly mounted on the rotating shaft, and each gear is respectively meshed with the corresponding rack;

[0010] A driving rack is slidably mounted inside the housing, the driving rack is meshed with any one of the gears and is fixedly connected to the other sliding member.

[0011] Further, the collision device includes: an outer plate and a fixing frame; the fixing frame is fixedly mounted on the housing; a moving frame is slidably mounted on the fixing frame and is elastically connected by a spring; the outer plate is fixedly mounted on the moving frame, and one end of the push rod passes through the fixing frame and the moving frame and is fixedly connected to the outer plate.

[0012] Furthermore, the other end of each of the sliding members is connected to the corresponding conductive rod by a rope, and the rope passes through the power-off device bracket.

[0013] Since the present invention adopts the above technical solutions, the beneficial effects of the present invention are as follows: The present invention enables the circuit to automatically disconnect in case of collision or drop through the collision trigger device and the power-off device; in addition, through the cooperation of the rope and the power-off device, the circuit can also automatically disconnect when being pulled, ensuring the safety of electricity use. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the overall internal structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the positional relationship between the L-shaped support plate and the connecting plate of the present invention.

[0017] Figure 4 It is a schematic diagram of the overall structure of the switch device of the present invention.

[0018] Figure 5 It is a schematic diagram of the overall structure of the power-off device of the present invention.

[0019] Figure 6 It is a schematic diagram of the overall structure of the collision trigger device of the present invention.

[0020] Figure 7 For the present invention Figure 6 Schematic enlarged view of the structure at A in

[0021] Figure 8 For the present invention Figure 6 Schematic enlarged view of the structure at B in

[0022] Figure 9 It is a schematic diagram of the overall structure of the collision device of the present invention.

[0023] Reference Numerals: housing - 1; collision trigger device - 2; switch device - 3; fuse - 4; power-off device - 5; sleeve - 6; fixing ring - 7; L-shaped support plate - 8; conductive rod - 9; restricting member - 11; connecting plate - 12; collision device - 21; push rod - 22; rack - 23; gear - 24; driving rack - 25; bracket - 26; outer plate - 211; fixing bracket - 212; moving bracket - 213; pressing rod - 31; switch device rack - 32; switch device gear - 33; lead screw - 34; restricting block - 35; power-off lever - 51; sliding block - 52; sliding member - 53; power-off device bracket - 54; first rod - 1101; second rod - 1102. Detailed implementation mode

[0024] An embodiment is as follows Figures 1-9 As shown, a safe outdoor drop-out fuse includes: a housing 1 and a conductive rod 9; a collision trigger device 2, a switch device 3, a fuse 4 and a power-off device 5 are fixedly installed on the housing 1; a sleeve 6 is fixedly installed at each end of the housing 1. The inside of the sleeve 6 is made of a conductive material, and the outside is made of an insulating material; a fixing ring 7 is fixedly installed at a position corresponding to the inner side of each of the two sleeves 6 inside the housing 1; two L-shaped support plates 8 are slidably installed inside the housing 1; Each fixing ring 7 and the corresponding L-shaped support plate 8 are elastically connected by a tension spring. There are two conductive rods 9. One end of the conductive rod 9 is fixedly connected to the corresponding L-shaped support plate 8, and the other end passes through the fixing ring 7 and is slidably connected to the corresponding sleeve 6; A protrusion for preventing the conductive rod 9 from slipping out is provided at one end of each sleeve 6, and the other end is fixedly connected to the cable; The housing 1 is connected in series in the circuit through two sleeves 6;

[0025] A connecting plate 12 is fixedly installed at both ends of the fuse 4. Each connecting plate 12 is provided with a contact, and the two L-shaped support plates 8 are respectively provided with contacts that cooperate with the contacts on the corresponding connecting plate 12;

[0026] Two limiting members 11 are slidably installed on the housing 1. The limiting members 11 are used to drive the corresponding L-shaped support plates 8 to move, so that the contacts on each L-shaped support plate 8 are in contact with the contacts on the corresponding connecting plate 12; The switch device 3 is used to drive the two limiting members 11 to move relatively in opposite directions at the same time; There are four groups of collision trigger devices 2, which are respectively fixedly installed on the four sides of the housing 1 where the sleeves 6 are not installed. The collision trigger device 2 is used to trigger the power-off device 5, and through the power-off device 5, the limiting member 11 no longer restricts the L-shaped support plate 8; When it is necessary to connect, press the switch device 3. The switch device 3 drives the two limiting members 11 to slide in the housing 1 and overcomes the pulling force of the tension spring, so that the two L-shaped support plates 8 slide, and the contacts on each L-shaped support plate 8 are in contact with the contacts on the corresponding connecting plate 12 to complete power-on; When the collision trigger device 2 on the housing 1 is hit, the collision trigger device 2 is triggered, and through the power-off device 5, the limiting member 11 no longer restricts the L-shaped support plate 8. The L-shaped support plate 8 resets under the action of the tension spring, so that the contact and the contact are separated, and the circuit is disconnected.

[0027] Specifically, as follows Figure 4As shown in the figure, the switch device 3 includes a pressing rod 31 and a switch device gear 33. The pressing rod 31 is slidably mounted on the housing 1, and a switch device rack 32 is fixedly mounted on the pressing rod 31. The switch device gear 33 is rotatably mounted on the housing 1 and is meshed with the switch device rack 32. A lead screw 34 is fixedly mounted on the switch device gear 33, and the lead screw 34 is rotatably mounted on the housing 1. The lead screw 34 is meshed with two limiting members 11. A limiting block 35 is slidably mounted on the housing 1 and is elastically connected by a spring. A plurality of grooves cooperating with the limiting block 35 are provided on the switch device rack 33. When it is necessary to connect, press the pressing rod 31, and through the switch device gear 33, the lead screw 34 rotates, thereby driving the two limiting members 11 to move. During the process of pressing the pressing rod 31, the limiting block 35 is inserted into the groove on the switch device rack 33 to prevent the limiting member 11 from resetting under the action of the tension spring after the hand leaves.

[0028] Specifically, as Figure 5 shown in the figure, the limiting member 11 includes a first rod 1101 and a second rod 1102. The first rod 1101 is rotatably mounted on the housing 1. The thread directions at both ends of the lead screw 34 are opposite. The two first rods 1101 are respectively meshed with both ends of the lead screw 34. The first rod 1101 is rotatably connected to the second rod 1102 and is elastically connected by a torsion spring. When the lead screw 34 rotates, since the first rod 1101 is slidably mounted on the housing 1 and is meshed with the lead screw 34, when the lead screw 34 rotates, it will drive the first rod 1101 and the second rod 1102 to move.

[0029] Specifically, as Figure 5 shown in the figure, the power-off device 5 includes a power-off device bracket 54 and a power-off lever 51. The power-off device bracket 54 is fixedly mounted on the housing 1, and a sliding block 52 is slidably mounted on the power-off device bracket 54. The middle of the power-off lever 51 is rotatably mounted on the housing 1. The sliding block 52 is rotatably connected to one end of the power-off lever 51, and the other end of the power-off lever 51 is located above the second rod 1102. An inclined groove is provided on the sliding block 52, and a sliding member 53 cooperating with it is slidably mounted inside the inclined groove. The sliding member 53 is fixedly connected to the collision trigger device 2. When the sliding member 53 moves towards the outside of the housing 1, under the action of the inclined groove, the sliding block 52 moves upward, thereby causing the power-off lever 51 to rotate. Under the action of the power-off lever 51, the second rod 1102 overcomes the elastic force of the torsion spring and rotates downward, so that the second rod 1102 no longer restricts the L-shaped support plate 8, and under the action of the tension spring, the L-shaped support plate 8 resets to complete the power-off.

[0030] Specifically, as Figures 6-8As shown in the figure, the collision trigger device 2 includes: a collision device 21; there are four collision devices 21, which are respectively located on the four sides of the housing 1; a bracket 26 is slidably installed on the housing 1 and is elastically connected by a spring; the bracket 26 is fixedly connected to the corresponding sliding member 53; a push rod 22 is fixedly installed on each collision device 21, and protrusions for pushing the bracket 26 are provided on the two push rods 22 on the front and rear sides; racks 23 are fixedly installed on the two push rods 22 on the upper and lower sides; a rotating shaft is rotatably installed in the housing 1, and two gears 24 are fixedly installed on the rotating shaft, and each gear 24 is meshed with the corresponding rack 23 respectively;

[0031] A driving rack 25 is slidably installed in the housing 1, the driving rack 25 is meshed with any one of the gears 24 and is fixedly connected to another sliding member 53; when one of the collision devices 21 on the front and rear sides is triggered, the push rod 22 pushes the bracket 26 through the protrusion thereon, so that the sliding member 53 moves outward to complete power-off; when one of the collision devices 21 on the upper and lower sides is triggered, the rack 23 on the push rod 22 drives the gear 24 to rotate, the gear 24 makes the driving rack 25 slide, and the sliding member 53 moves outward through the driving rack 25 to complete power-off.

[0032] Specifically, as Figure 9 shown in the figure, the collision device 21 includes: an outer plate 211 and a fixing frame 212; the fixing frame 212 is fixedly installed on the housing 1; a moving frame 213 is slidably installed on the fixing frame 212 and is elastically connected by a spring; the outer plate 211 is fixedly installed on the moving frame 213, and one end of the push rod 22 passes through the fixing frame 212 and the moving frame 213 and is fixedly connected to the outer plate 211; when the device is collided, the outer plate 211 is squeezed and moves inward, and at the same time drives the push rod 22 to move, thereby driving the bracket 26 or the rack 23; when the device is picked up, under the action of the spring, the push rod 22 is reset.

[0033] Specifically, as Figure 5 shown in the figure, the other end of each sliding member 53 is connected to the corresponding conductive rod 9 through a rope, and the rope passes through the power-off device bracket 54; when the cable is subjected to a tensile force and the conductive rod 9 slides to the maximum distance, if the tensile force continues to act at this time, the rope will pull the sliding member 53 to move outward, so that the No. 2 member 1102 no longer restricts the L support plate 8, and under the action of the tension spring of the cable, the contact head is separated from the contact point to disconnect the circuit.

[0034] Working principle: Connect this device in series to the circuit through two sleeves 6, then press the pressing rod 31. Through the switch device rack 32 and the switch device gear 33, the lead screw 34 rotates. During the process of pressing the pressing rod 31, the spring on the limiting block 35 is compressed. When the pressing of the pressing rod 31 stops, the limiting block 35 is inserted into the corresponding groove on the switch device rack 32 under the action of the spring, making the pressing rod 31 unable to move further; during the rotation of the lead screw 34, it drives two first rods 1101 to move, so that the second rods 1102 connected to each first rod 1101 push the corresponding L-shaped support plates 8 to move, thereby making the contact head contact the contact point and conducting the circuit;

[0035] When the outer plate 211 is impacted, it causes the push rod 22 to slide inward towards the inside of the housing 1, and then makes the bracket 26 slide or the gear 24 rotate; when the push rod 22 pushes the bracket 26 to slide outward, or when the gear 24 drives the driving rack 25 to slide, the bracket 26 or the driving rack 25 drives the slider 53 to move outward, making the sliding block 51 slide upward, thus causing the power-off lever 51 to rotate. One end of the power-off lever 51 overcomes the elastic force of the torsion spring and presses down on the second rod 1102, making the second rod 1102 no longer restrict the L-shaped support plate 8. Under the action of the tension spring, the L-shaped support plate 8 resets, thereby making the contact head separate from the contact point and disconnecting the circuit;

[0036] When the circuit is pulled and the conductive rod 9 and the sleeve 6 slide to the maximum distance, the rope is lifted, and then the slider 53 moves outward, so that the second rod 1102 no longer restricts the L-shaped support plate 8, and the circuit is disconnected under the action of the tension spring.

[0037] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A safety type outdoor drop-out fuse, characterized in that, Including: A housing (1) and a conductive rod (9); a collision trigger device (2), a switch device (3), a fuse (4) and a power-off device (5) are fixedly installed on the housing (1); sleeves (6) are fixedly installed at both ends of the housing (1), the inside of the sleeve (6) is made of conductive material, and the outside is made of insulating material; fixing rings (7) are fixedly installed at positions corresponding to the inner sides of the two sleeves (6) inside the housing (1); two L-shaped support plates (8) are slidably installed inside the housing (1); a tension spring is elastically connected between each fixing ring (7) and the corresponding L-shaped support plate (8), there are two conductive rods (9), one end of the conductive rod (9) is fixedly connected to the corresponding L-shaped support plate (8), and the other end passes through the fixing ring (7) and is slidably connected to the corresponding sleeve (6); a protrusion for preventing the conductive rod (9) from slipping out is provided at one end of each sleeve (6), and the other end is fixedly connected to an external cable. A connecting plate (12) is fixedly installed at both ends of the fuse (4), contacts are provided on each connecting plate (12), and contacts cooperating with the contacts on the corresponding connecting plate (12) are provided on the two L-shaped support plates (8). Two limit members (11) are slidably installed on the housing (1), the limit members (11) are used to drive the corresponding L-shaped support plates (8) to move, so that the contacts on each L-shaped support plate (8) are in contact with the contacts on the corresponding connecting plate (12); the switch device (3) is used to drive the two limit members (11) to move relatively in opposite directions; there are four groups of collision trigger devices (2), which are respectively fixedly installed on the four sides of the housing (1) where the sleeves (6) are not installed, and the collision trigger device (2) is used to trigger the power-off device (5), so that the limit member (11) no longer restricts the L-shaped support plate (8) through the power-off device (5).

2. The safety type outdoor drop-out fuse according to claim 1, characterized in that, The switch device (3) includes: a pressing rod (31) and a switch device gear (33); the pressing rod (31) is slidably installed on the housing (1), and a switch device rack (32) is fixedly installed on the pressing rod (31); the switch device gear (33) is rotatably installed on the housing (1) and is meshed with the switch device rack (32), a lead screw (34) is fixedly installed on the switch device gear (33), the lead screw (34) is rotatably installed on the housing (1), and the lead screw (34) is meshed with the two limit members (11); a limit block (35) is slidably installed on the housing (1) and is elastically connected by a spring, and a plurality of grooves cooperating with the limit block (35) are provided on the switch device rack (32).

3. The safety type outdoor drop-out fuse according to claim 2, characterized in that, The limiting member (11) includes: a first rod (1101) and a second rod (1102); the first rod (1101) is rotatably mounted on the housing (1); the two ends of the lead screw (34) have opposite thread directions; the two first rods (1101) are respectively meshed and connected with the two ends of the lead screw (34); the first rod (1101) is rotatably connected with the second rod (1102) and is elastically connected by a torsion spring.

4. The safety type outdoor drop-out fuse according to claim 3, characterized in that, The power-off device (5) includes: a power-off device bracket (54), a power-off lever (51); the power-off device bracket (54) is fixedly mounted on the housing (1), and a sliding block (52) is slidably mounted on the power-off device bracket (54); the middle of the power-off lever (51) is rotatably mounted on the housing (1), the sliding block (52) is rotatably connected with one end of the power-off lever (51), and the other end of the power-off lever (51) is located above the second rod (1102); a slotted groove is provided on the sliding block (52), and a sliding member (53) that cooperates with it is slidably mounted inside the slotted groove, and the sliding member (53) is fixedly connected with the collision trigger device (2).

5. The safety type outdoor drop-out fuse according to claim 4, wherein, The collision trigger device (2) includes: a collision device (21); there are four collision devices (21), which are respectively located on the four sides of the housing (1); a bracket (26) is slidably mounted on the housing (1) and is elastically connected by a spring; the bracket (26) is fixedly connected with the corresponding sliding member (53); a push rod (22) is fixedly mounted on each collision device (21), and protrusions for pushing the bracket (26) are provided on two of the push rods (22); racks (23) are fixedly mounted on the other two push rods (22); a rotating shaft is rotatably mounted inside the housing (1), and two gears (24) are fixedly mounted on the rotating shaft, and each gear (24) is respectively meshed and connected with the corresponding rack (23); A driving rack (25) is slidably mounted inside the housing (1), the driving rack (25) is meshed and connected with any one of the gears (24) and is fixedly connected with the other sliding member (53).

6. The safety type outdoor drop-out fuse according to claim 5, characterized in that, The collision device (21) includes: an outer plate (211), a fixing frame (212); the fixing frame (212) is fixedly mounted on the housing (1); a moving frame (213) is slidably mounted on the fixing frame (212) and is elastically connected by a spring; the outer plate (211) is fixedly mounted on the moving frame (213), and one end of the push rod (22) passes through the fixing frame (212) and the moving frame (213) and is fixedly connected with the outer plate (211).

7. The safety type outdoor drop-out fuse according to claim 4, characterized in that, The other end of each sliding member (53) is connected to the corresponding conductive rod (9) by a rope, and the rope passes through the power-off device bracket (54).

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