A drop-out fuse

Abstract

This invention provides a drop-out fuse, relating to the field of outdoor circuit protection technology. It includes an insulator, a fuse tube, and a clamping plate. Hinged plates are fixedly mounted on both sides of the fuse tube, and the hinged plates are hinged to a hinge frame via bolts. A protective plate is fixedly mounted on the outer side of the hinge frame. A set of connecting ribs is integrally connected to the left end of the hinge frame. The clamping plate is located between the connecting ribs, and a through groove is formed on the connecting rib. Both ends of the clamping plate are slidably installed within the groove. A plug-in is fixedly connected to the side of the connecting rib near the insulator. Each end of the insulator has a plug-in rod fixedly connected to it, and the plug-in is slidably inserted into each plug-in rod. This drop-out fuse can quickly clamp and fix the fuse without needing to wrap or fix it, thus ensuring that the fuse detaches from the fuse tube after it blows, thereby reducing safety hazards.

Description

Technical Field

[0001] This invention relates to the field of outdoor circuit protection technology, and in particular to a drop-out fuse. Background Technology

[0002] Drop-out fuses are short-circuit switches widely used in power distribution line branches and distribution transformers, and are also widely used in outdoor circuit protection.

[0003] In traditional drop-out fuses, the fuse tip extends out of the fuse tube and is fixed to the end of the fuse tube by winding. This method is inconvenient when installing the fuse, and when the fuse is short-circuited and blows, it cannot be guaranteed that the fuse will detach from the fuse tube, posing a certain safety hazard.

[0004] In view of the above reasons, the present invention proposes a drop-out fuse to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a drop-out fuse that can hold the fuse with a clamping plate and quickly detach from the fuse tube when the fuse blows.

[0006] This invention provides a drop-out fuse, comprising: an insulator, a fuse tube, a hinge frame, and a clamping plate. Both ends of the fuse tube are fixedly mounted with hinge plates extending to one side. The hinge frame is hinged to the hinge plates via connecting bolts. A set of connecting ribs is integrally connected to the end of the hinge frame away from the fuse tube. The clamping plate is disposed between the connecting ribs, and a through groove is formed on the connecting rib. Both ends of the clamping plate are slidably mounted within the groove. A plug-in is fixedly connected to the side of the connecting rib near the insulator. Both ends of the insulator are fixedly connected to plug-in rods, and the plug-in is slidably inserted into each plug-in rod.

[0007] Preferably, the top and bottom of the clamping plate are respectively provided with sliding rods, the sliding rods are slidably installed in the sliding groove, the end of the sliding rod is provided with a limiting block, the sliding groove is provided with a limiting groove, and the limiting block is slidably installed in the limiting groove.

[0008] Preferably, the clamping plate has a first fixing hole at each end, and the side wall of the hinge frame has a fixing plate extending to one side, and the fixing plate has a second fixing hole.

[0009] Preferably, the sidewall of the hinge frame is provided with spaced grooves, and the side of the clamping plate is provided with protrusions that are adapted to the grooves.

[0010] Preferably, the connector has a stepped arrangement of positioning holes and reinforcing holes, and a ring of spaced insertion grooves is provided on the inner surface of the positioning hole near the insulator.

[0011] Preferably, the outer surface of the plug rod is provided with a ring of plug blocks that are adapted to the plug groove, and the end of the plug rod is provided with a threaded tube.

[0012] Preferably, the plug block is slidably connected to the plug slot, and the threaded tube is slidably installed in the positioning hole.

[0013] Preferably, the fastening bolt passes through the reinforcing hole and is detachably connected to the threaded pipe via a threaded engagement.

[0014] Preferably, the top of the fuse tube is provided with a suspension member that is fixedly connected thereto, and the suspension member has a suspension hole.

[0015] Preferably, a protective plate is provided on the side of the connecting rib away from the insulator, and the protective plate is an arc-shaped plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting a hinge frame that is hinged to the hinge plate on the side of the fuse tube, and setting a connecting rib plate at one end of the hinge frame, a sliding groove is opened on the connecting rib plate, so that the clamping plate can be slidably installed in the sliding groove. The side of the clamping plate cooperates with the side wall of the hinge frame, which can quickly clamp and fix the fuse without the need to wrap and fix the fuse. Thus, after the fuse blows, it can ensure that the fuse is detached from the inside of the fuse tube, thereby reducing safety hazards.

[0018] 2. By setting a connector on one side of the connecting rib and a connector rod at both ends of the insulator, the connector can be quickly assembled with the connector rod, avoiding misalignment between the insulator and the connecting rib during assembly. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the drop-out fuse of the present invention;

[0021] Figure 2 This is a schematic diagram of the installation of the drop-out fuse of the present invention;

[0022] Figure 3 This is a partial sectional view of the connecting ribs and hinge frame in the drop-out fuse of the present invention;

[0023] Figure 4 This is a schematic diagram of the clamping plate in the drop-out fuse of the present invention;

[0024] Figure 5 This is a partial cross-sectional view of the plug rod in the drop-out fuse of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1: Insulator; 2: Fuse tube; 3: Clamping plate; 4: Hinge plate; 5: Hinge frame; 6: Protective plate; 7: Connecting rib; 8: Slide groove; 9: Limiting groove; 10: Groove; 11: Slide rod; 12: Limiting block; 13: Protrusion; 14: First fixing hole; 15: Fixing plate; 16: Second fixing hole; 17: Suspension component; 18: Suspension hole; 19: Plug-in component; 20: Reinforcing hole; 21: Positioning hole; 22: Plug-in groove; 23: Plug-in rod; 24: Plug-in block; 25: Threaded tube. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] This invention proposes a drop-out fuse, such as... Figure 1 As shown, the device includes an insulator 1, a fuse tube 2, a hinge frame 5, and a clamping plate 3. Both ends of the fuse tube 2 are fixedly installed with hinge plates 4 extending to the left. The two hinge frames 5 are respectively hinged to the hinge plates 4 by connecting bolts. The left end of the hinge frame 5 is provided with a set of connecting ribs 7 integrally connected with it. The connecting ribs 7 extend vertically from the upper and lower ends of the left side of the hinge frame 5. The clamping plate 3 is located between the two connecting ribs 7, and each connecting rib 7 has a vertically penetrating groove 8. The upper and lower ends of the clamping plate 3 are respectively slidably installed in the groove 8. The side of the connecting rib 7 near the insulator 1 is provided with a plug-in 19 extending towards the insulator 1 and fixedly connected to the connecting rib 7. Both ends of the insulator 1 are respectively provided with plug-in rods 23 fixedly connected to them. The plug-in 23 is adapted to slide and plug into each plug-in rod 23.

[0031] Specifically, such as Figure 3 , 4 As shown, the top and bottom of the clamping plate 3 are respectively provided with sliding rods 11, which are slidably installed in the sliding groove 8. The end of the sliding rod 11 is provided with a limiting block 12. A limiting groove 9 is opened at the end of the sliding groove 8 away from the clamping plate 3, and the limiting block 12 is slidably installed in the limiting groove 9, so that the clamping plate 3 can move between the two connecting ribs 7. The left side wall of the hinge frame 5 between the two connecting ribs 7 is provided with grooves 10 arranged at intervals. The surface of the clamping plate 3 near the hinge frame 5 is provided with protrusions 13 arranged at intervals that are adapted to the grooves 10. By moving the clamping plate 3, the protrusions 13 can be adapted to the grooves 10 to clamp and fix the fuse led out from the fuse tube 2 and the hinge plate 4, avoiding the fuse from being wrapped and fixed.

[0032] Furthermore, the two ends of the clamping plate 3 are respectively provided with first fixing holes 14, which are countersunk screw holes. The side wall of the hinge frame 5 is provided with fixing plates 15 extending to both sides respectively. The fixing plates 15 are provided with second fixing holes 16. After the clamping plate 3 is moved to a suitable position, the fixing bolt is screwed into the countersunk side of the countersunk screw hole and passes through the second fixing hole 16, and is tightened with the nut, thereby preventing the clamping plate 3 from moving and clamping the fuse between the protrusion 13 and the groove 10 on the clamping plate 3.

[0033] In this embodiment, a protective plate 6 is provided on the side of the connecting rib plate 7 away from the insulator 1 and is fixedly connected to it. The protective plate 6 is an arc-shaped plate and is used to protect the wire clamp plate 3 and fuses outdoors to prevent rainwater from directly washing away them.

[0034] Specifically, such as Figure 2 , 5 As shown, the connector 19 is fixedly connected to the connecting rib 7 on the side near the insulator 1. The connector 19 has a positioning hole 21 and a reinforcing hole 20 arranged in a stepped, coaxial manner. The axes of the two are perpendicular to the bottom surface of the connecting rib 7. The reinforcing hole 20 is located on the side away from the insulator 1. A ring of spaced-apart insertion grooves 22 is provided on the inner surface of the positioning hole 21 near the insulator 1. The insertion grooves 22 are arranged parallel to the axis of the positioning hole 21. A ring of insertion blocks 24, which fit the insertion grooves 22, is provided on the outer surface of the connector rod 23. The insertion blocks 24 are arranged parallel to the axis of the connector rod 23. A threaded tube 25 is provided at the end of the connector rod 23. When the connector 19 is fitted and inserted into the connector rod 23, the connector block 24 is fitted and slidably connected to the connector groove 22. At this time, the threaded tube 25 extends into the positioning hole 21 and can slide towards it. The diameter of the reinforcing hole 20 is not less than the diameter of the internal thread of the threaded tube 25, so that after the connector 19 and the connector rod 23 are fitted and installed, the fastening bolt passes through the reinforcing hole 20 and is threadedly engaged with the threaded tube 25 for detachable connection.

[0035] In this embodiment, the top of the fuse tube 2 is also provided with a suspension member 17 that is fixedly connected to it. The suspension member 17 has a suspension hole 18, which can be quickly suspended when the user needs to suspend the fuse tube 2.

[0036] The working principle of the drop-out fuse of the present invention is as follows: When it is necessary to fix the fuse, first place the fuse between the groove 10 and the protrusion 13, and then move the clamping plate 3 towards the groove 10. At this time, the slide rod 11 slides along the inside of the slide groove 8, and the limiting block 12 also slides along the inside of the limiting groove 9. When the protrusion 13 moves into the inside of the groove 10, the bolt is passed through the first fixing hole 14 and the second fixing hole 16 in sequence and then the nut is tightened for fixation. Then, the plug block 24 is inserted into the inside of the plug groove 22 until the threaded tube 25 passes through the positioning hole 21 and abuts against the stepped surface. Then, the fastening bolt is screwed into the inside of the threaded tube 25 through the reinforcing hole 20.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drop-out fuse, characterized in that, include: The insulator comprises a fuse tube, a hinge frame, and a clamping plate. Both ends of the fuse tube are fixedly fitted with hinge plates extending to one side. The hinge frame is hinged to the hinge plates via connecting bolts. At the end of the hinge frame furthest from the fuse tube, a set of connecting ribs is integrally connected to it. The clamping plate is disposed between the connecting ribs, and a through groove is formed on each connecting rib. Both ends of the clamping plate are slidably installed within the groove. Sliding rods are provided at the top and bottom of the clamping plate, and these sliding rods are slidably installed within the groove. A limiting block is provided at the end of each sliding rod. A limiting groove is provided in the slot, and the limiting block is slidably installed in the limiting groove. The two ends of the clamping plate are respectively provided with first fixing holes. The side wall of the hinge frame is provided with a fixing plate extending to one side, and the fixing plate is provided with a second fixing hole. The side wall of the hinge frame is distributed with grooves arranged at intervals. The side of the clamping plate is provided with protrusions that are adapted to the grooves. The side of the connecting rib plate near the insulator is provided with a plug-in member that is fixedly connected to it. The two ends of the insulator are respectively provided with plug-in rods that are fixedly connected to it. The plug-in member is adapted to slide and plug into each of the plug-in rods.

2. The drop-out fuse according to claim 1, characterized in that, The connector has a stepped arrangement of positioning holes and reinforcing holes. The inner surface of the positioning hole near the insulator end has a ring of spaced insertion grooves.

3. The drop-out fuse according to claim 2, characterized in that, The outer surface of the plug rod is provided with a ring of plug blocks that are adapted to the plug groove, and the end of the plug rod is provided with a threaded tube.

4. The drop-out fuse according to claim 3, characterized in that, The plug block is slidably connected to the plug slot, and the threaded tube is slidably installed in the positioning hole.

5. The drop-out fuse according to claim 4, characterized in that, The fastening bolt passes through the reinforcing hole and is detachably connected to the threaded pipe via a threaded engagement.

6. The drop-out fuse according to claim 1, characterized in that, The top of the fuse tube is provided with a suspension member that is fixedly connected to it, and the suspension member has a suspension hole.

7. The drop-out fuse according to claim 1, characterized in that, A protective plate is fixedly connected to the side of the connecting rib away from the insulator. The protective plate is an arc-shaped plate.

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