A high-voltage fuse capable of adapting to different length fuses

Abstract

The application discloses a high-voltage fuse with different length fuses, which comprises a first shell, the opposite surface of the first shell is sleeved with a second shell, the bottom of the first shell and the second shell is fixedly installed with a supporting column, a gear bearing is connected in a movable groove, the movable groove is arranged in the middle part of the inner side of a bottom plate, the front and back sides of the gear are connected with gears, the top of each gear is installed with a supporting column, the outer side wall of the left end of the second shell is fixedly installed with a convex ring, the convex ring is clamped with a groove, each groove is installed with a first air bag, the outlet of the first air bag is connected with the first air bag, the high-voltage fuse with different length fuses can be applied to fuses with different lengths, so that different installation requirements can be met, the sealing treatment of the inside and the outside is good, and the influence of external factors on the inside is avoided.

Description

Technical Field

[0001] This invention relates to the field of fuse technology, specifically a high-voltage fuse that can be adapted to fuses of different lengths. Background Technology

[0002] As an overcurrent protector, fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment. In practical use, fuses are often assembled with other accessories to form fuse assemblies for use in circuits. The main function is to melt the fuse element with the heat generated by the fuse itself after the current exceeds the specified value for a period of time, thereby breaking the circuit.

[0003] Chinese invention publication CN215266172U discloses a fuse that is easy to disassemble and replace, including a fuse body, a disassembly and assembly component, and a sealing component. The disassembly and assembly component is located on the outer right side of the fuse body; the sealing component is located in the center of the fuse body. The disassembly and assembly component includes a screw rod located on the front and rear sides of the fuse body, and the screw rod is symmetrically distributed about the perpendicular bisector of the fuse body. This fuse, which is easy to disassemble and replace, uses limiting blocks at the front and rear ends of the second housing. When replacing the internal fuse element, rotating the handle causes the worm gear to be limited by the first bracket, which in turn drives the screw rod inside the worm wheel to rotate under the limitation of the second bracket. This moves the limiting blocks, thereby separating the second housing from the first housing, facilitating the disassembly and replacement of the internal fuse element. At the same time, the two limiting blocks improve the stability when installing the second housing.

[0004] Chinese invention publication number CN203277293U discloses a fuse, including a support member and a fuse element. The support member includes a base, an insulating bracket, and a contact socket. The base includes a first plate and a second plate. The contact socket includes a socket clamp and a connecting plate. The key feature is that the socket clamp is hinged to the connecting plate, and the socket clamp has a locking buckle for locking the socket clamp. The base is inverted U-shaped, and the first and second plates are slidably connected. The insulating bracket stands vertically on the convex surface of the base and is securely fixed to the base. This invention has the advantages of improving the utilization rate of the fuse and making the fuse more practical.

[0005] The above solution has a fixed overall length, which means it can only be used with fuses of a fixed length. When the fuse length is different, different models of fuses need to be replaced, which is not very adaptable and increases costs. At the same time, the sealing between components is not good during installation, which makes the fuse susceptible to the influence of external moisture and thus poses a safety hazard. Summary of the Invention

[0006] The purpose of this invention is to provide a high-voltage fuse that can adapt to fuses of different lengths, in order to solve the problems mentioned in the background art. Currently available fuses on the market have a fixed overall length, and therefore can only be used with fuses of a fixed length. When the length of the fuse is different, different models of fuses need to be replaced, resulting in poor adaptability and increased costs. At the same time, the sealing between components is weak during installation, making the fuse susceptible to the influence of external moisture, which can lead to safety hazards.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage fuse adaptable to fuses of different lengths, comprising a first housing, and a second housing sleeved on the opposite side of the first housing, and a support column fixedly installed at the bottom of both the first housing and the second housing, and the bottom of the support column being connected to the top of a base plate, while the base plate is used for later installation and fixing to a wall or equipment.

[0008] Also includes:

[0009] A knob is provided in the middle of the top surface of the base plate, and a gear is integrally connected to the bottom of the knob. The gear bearing is connected to the movable groove, and the movable groove is opened in the middle of the inner side of the base plate. At the same time, toothed plates are connected to the front and rear sides of the gear.

[0010] Each of the toothed plates is equipped with a support column at its top, and the middle part of the support column is connected to a sliding groove. The sliding groove is symmetrically opened at the top of the base plate, and the top of the support column is located above the base plate.

[0011] A protruding ring is fixedly installed on the outer side wall of the left end of the second housing, and the protruding ring engages with the groove. The grooves are evenly spaced on the inner side wall of the first housing, and each groove is equipped with a first airbag. The outlet of the first airbag is connected to the first airbag. The first airbag is installed on the inner wall of the right side of the first housing.

[0012] Contact pieces are installed on the opposing surfaces inside the first and second housings, and a fuse is connected between the contact pieces. Mounting seats are installed on the outer end faces of the first and second housings, and wires are connected to the mounting seats on both the left and right sides.

[0013] Preferably, the first housing and the second housing are fitted together, and both the first housing and the second housing are made of insulating material. The first housing and the second housing form a fusible structure through a contact piece, a fuse, a mounting base, and a wire, so that the first housing and the second housing can prevent leakage, and the contact piece, the fuse, and the wire ensure the normal connection of the circuit.

[0014] Preferably, both the convex ring and the groove have hemispherical cross-sections, and the convex ring and the groove are in a concave-convex fit. The convex ring is made of rubber, and the first housing and the second housing form an adjustment and fixing structure through the convex ring and the groove, so that the convex ring will engage with the corresponding groove after it moves.

[0015] Preferably, the outlet of the first airbag in each of the grooves is connected to the first sealing bag, and the first sealing bag is configured as an annular structure. The first sealing bag is used to seal the space between the first housing and the second housing, so that when the first airbag is pressurized, it will deliver gas to the first sealing cavity, thereby sealing the space between the first housing and the second housing.

[0016] Preferably, the gear meshes with the toothed plate, and the front and rear toothed plates move in opposite directions. The toothed plate is configured with an "L" shape and slides in close contact with the movable groove, so that after the gear drives the rack to move, the rack will slide in the movable groove.

[0017] Preferably, the toothed plate is vertically connected and fixed to the support column, and the support column drives the first housing and the second housing to open and close, so that after the rack moves, it will drive the first housing and the second housing to adjust through the support column.

[0018] Preferably, anti-detachment plates are symmetrically hinged to the outer end of the mounting base, and a torsion spring is installed at the hinge of the anti-detachment plate. The opposite surface of the anti-detachment plate is set as an arc structure to fit against the outer side of the wire, so that when the anti-detachment plate rotates, it will reverse the torsion spring. When resetting, the anti-detachment plate will connect with the outer guide sleeve.

[0019] Preferably, a pull rope is wound around the hinge of the anti-detachment plate, and the end of the pull rope is connected to the pressure plate. The pressure plate is connected to the cavity, which is opened in the side wall of the mounting base. At the same time, a spring is installed between the pressure plate and the cavity, so that when the pull rope is released, the spring will drive the pressure plate to move back to its original position.

[0020] Preferably, a second airbag is installed in the cavity, and the pressure plate abuts against the second airbag. The second airbag is connected to the second sealing bag, and the second sealing bag is installed on the inner wall of the mounting base. This way, when the smoke is reset, it will squeeze the second airbag, and the second airbag will deliver gas to the second sealing bag.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This high-voltage fuse, adaptable to fuses of different lengths, allows for the installation of fuse elements of varying lengths. Rotating the knob drives a gear, which in turn moves a rack. The rack, via a column, separates the first and second housings at the top, allowing the corresponding fuse to be installed on the internal contacts. Reversing the gear then closes the first and second housings, causing a protruding ring on the second housing to move inside the first housing. This protruding ring, made of rubber, possesses elastic deformation capabilities. Once the fuse element reaches its installation length, it engages with a groove on the inner wall of the first housing, thus limiting and fixing the adjusted length. The engagement of the protruding ring with the groove also compresses the corresponding first airbag. This compression delivers gas to the first sealing bladder, which seals both the first and second housings, preventing external moisture from entering and affecting the fuse's normal operation, thus avoiding safety hazards.

[0023] 2. This high-voltage fuse, adaptable to fuses of different lengths, allows for connection between the conductor and the mounting base. Rotating the anti-detachment plate at the end reverses the torsion spring, tightening the pull cord. This tightening compresses the spring, separating the pressure plate from the second airbag. The conductor is then plugged into the mounting base for secure connection. Releasing the anti-detachment plate allows the torsion spring to reset, enhancing the connection stability between the conductor and the mounting base. With the pull cord relaxed, the spring resets the pressure plate, compressing the second airbag. The second airbag then delivers gas to the second sealing chamber, sealing the conductor and mounting base. This results in better overall sealing performance of the fuse, improving safety during use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0026] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B;

[0028] Figure 5 This is a top view schematic diagram of the rack and movable groove structure of the present invention;

[0029] Figure 6 This is a side sectional view of the connection between the convex ring and the groove of the present invention;

[0030] Figure 7This is a side view of the anti-detachment plate structure of the present invention;

[0031] Figure 8 This is a side cross-sectional schematic diagram of the cavity, the second airbag, and the second sealing bag of the present invention.

[0032] In the diagram: 1. First housing; 2. Second housing; 3. Support column; 4. Base plate; 5. Knob; 6. Gear; 7. Tooth plate; 8. Movable groove; 9. Slide groove; 10. Contact piece; 11. Fuse; 12. Mounting base; 13. Wire; 14. Protruding ring; 15. Groove; 16. First airbag; 17. First sealing bag; 18. Anti-detachment plate; 19. Torsion spring; 20. Pull rope; 21. Pressure plate; 22. Cavity; 23. Spring; 24. Second airbag; 25. Second sealing bag. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0034] Please see Figure 1-8 This invention provides a technical solution: a high-voltage fuse adaptable to fuses of different lengths, comprising a first housing 1, with a second housing 2 sleeved on the opposite side of the first housing 1. Support columns 3 are fixedly installed at the bottom of both the first housing 1 and the second housing 2, and the bottom of the support columns 3 is connected to the top of a base plate 4. The base plate 4 is used for later installation and fixation to a wall or equipment. Contact pieces 10 are installed on the opposite sides of the interior of both the first housing 1 and the second housing 2, and a fuse 11 is connected between the contact pieces 10. Mounting seats 12 are installed on the outer end faces of both the first housing 1 and the second housing 2, and wires 13 are connected to the mounting seats 12 on both sides. The first housing 1 and the second housing 2 are fitted together, and both housings are made of insulating material. The first housing 1 and the second housing 2 form a fusing structure through the contact pieces 10, the fuse 11, the mounting seats 12, and the wires 13. Figure 1-2As shown, in use, the contacts 10 inside the first housing 1 and the second housing 2 are connected to the beginning and end of the fuse 11. Then, the mounting base 12 on the outside of the first housing 1 and the second housing 2 is connected to the wire 13 in the circuit to form a connected line. Then, the first housing 1 and the second housing 2 are closed, and the support column 3 moves on the base plate 4 to assemble the fuse. Then, the base plate 4 is connected to the corresponding wall or the outside of the equipment so that the fuse can be used normally. When the current in the circuit is overloaded, the fuse 11 will break, thereby protecting the circuit.

[0035] A knob 5 is located in the center of the top surface of the base plate 4, and a gear 6 is integrally connected to the bottom of the knob 5. The gear 6 is bearing-connected to a movable groove 8, which is located in the center of the inner side of the base plate 4. Gear plates 7 are connected to both the front and rear sides of the gear 6. A support column 3 is mounted on the top of each gear plate 7, and the middle of the support column 3 is connected to a sliding groove 9. The sliding grooves 9 are symmetrically located on the top of the base plate 4, and the top of the support column 3 is positioned above the base plate 4. The gear 6 meshes with the gear plates 7, and the front and rear gear plates 7 move in opposite directions. The gear plates 7 are L-shaped and slide close to the movable groove 8. The gear plates 7 are vertically connected and fixed to the support columns 3, and the support columns 3 drive the first housing 1 and the second housing 2 to open and close. Figure 1-2 and Figure 5 As shown, when installing and connecting fuses 11 of different lengths, the knob 5 on the base plate 4 is rotated. The knob 5 will drive the gear 6 to rotate in the movable groove 8. After the gear 6 rotates, it will drive the front and rear toothed plates 7 to slide in the movable groove 8. After the toothed plates 7 slide, they will drive the top support column 3 to move synchronously. After the support column 3 moves, it will drive the first housing 1 and the second housing 2 to move, thereby adjusting the distance between the first housing 1 and the second housing 2, which is convenient for installing fuses 11 of different lengths.

[0036] A protruding ring 14 is fixedly installed on the outer wall of the left end of the second housing 2, and the protruding ring 14 engages with a groove 15. Grooves 15 are evenly spaced on the inner wall of the first housing 1, and each groove 15 is fitted with a first airbag 16. The outlet of the first airbag 16 is connected to the first airbag 16, which is installed on the inner wall of the right side of the first housing 1. Both the protruding ring 14 and the groove 15 have hemispherical cross-sections and are in a concave-convex fit. The protruding ring 14 is made of rubber. The first housing 1 and the second housing 2 form an adjustment and fixing structure through the protruding ring 14 and the groove 15. The outlet of the first airbag 16 in each groove 15 is connected to a first sealing bladder 17, which has an annular structure and is used to seal the space between the first housing 1 and the second housing 2. Figure 2-3 and Figure 6 As shown, when the first housing 1 and the second housing 2 move relative to each other, the convex ring 14 on the outer side of the second housing 2 slides inside the first housing 1. The convex ring 14 undergoes elastic deformation. After adjusting to a suitable distance, the convex ring 14 engages with the groove 15 at the corresponding position on the inner wall of the first housing 1. At this time, the convex ring 14 returns to its original shape and engages with the groove 15, thereby fixing the adjusted position. After the convex ring 14 engages with the groove 15, it will compress the first airbag 16 in the groove 15. After the first airbag 16 is compressed, it will deliver gas to the first sealing bag 17. The first sealing bag 17 will expand, thereby sealing the space between the first housing 1 and the second housing 2 to prevent external moisture from entering the interior and causing safety hazards.

[0037] Anti-detachment plates 18 are symmetrically hinged to the outer end of the mounting base 12, and a torsion spring 19 is installed at the hinge of the anti-detachment plate 18. The opposite surface of the anti-detachment plate 18 is set with an arc-shaped structure to fit against the outer side of the wire 13. A pull rope 20 is wound around the hinge of the anti-detachment plate 18, and the end of the pull rope 20 is connected to the pressure plate 21. The pressure plate 21 is connected to the cavity 22, and the cavity 22 is opened in the side wall of the mounting base 12. A spring 23 is installed between the pressure plate 21 and the cavity 22. A second airbag 24 is installed in the cavity 22, and the pressure plate 21 abuts against the second airbag 24. The second airbag 24 is connected to the second sealing bag 25, and the second sealing bag 25 is installed on the inner wall of the mounting base 12. Figure 1-2 , Figure 4 and Figure 7-8 As shown, when the mounting base 12 is connected to the wire 13, the anti-detachment plate 18 on the outside of the mounting base 12 is rotated. At this time, the torsion spring 19 reverses and the pull rope 20 tightens. Then, the wire 13 is inserted into the mounting base 12. Then, the anti-detachment plate 18 is released. The anti-detachment plate 18 will rotate under the action of the torsion spring 19, thereby clamping the wire 13 and strengthening the stability of the connection. After the anti-detachment plate 18 is reset, the pull rope 20 is released, and the pressure plate 21 in the cavity 22 will slide under the action of the spring 23. After the pressure plate 21 moves, it will squeeze the second airbag 24. The second airbag 24 will deliver the internal gas to the second sealing bag 25, thereby sealing the connection between the wire 13 and the mounting base 12, so that the connection between the inside and outside of the fuse has good sealing performance.

[0038] Working principle: When using this type of high-voltage fuse that can be adapted to fuses of different lengths, such as... Figure 1-8As shown, firstly, the contacts 10 inside the first housing 1 and the second housing 2 are connected to the beginning and end of the fuse 11. Then, the mounting base 12 on the outside of the first housing 1 and the second housing 2 is connected to the wire 13 in the circuit to form a connected circuit. The first housing 1 and the second housing 2 are closed, and the base plate 4 is connected to the corresponding wall or the outside of the equipment. When the current in the circuit is overloaded, the fuse 11 will break, thereby protecting the circuit.

[0039] When installing and connecting fuses 11 of different lengths, turning knob 5 will rotate gear 6, which in turn drives toothed plate 7 to slide. Toothed plate 7 will drive support column 3 to move synchronously, and support column 3 will drive first housing 1 and second housing 2 to move, thereby adjusting the distance between first housing 1 and second housing 2 to facilitate the installation of fuses 11 of different lengths. When first housing 1 and second housing 2 move relative to each other, convex ring 14 will slide inside first housing 1. After adjusting to a suitable distance, convex ring 14 will engage with the corresponding groove 15, thereby fixing the adjusted position. After convex ring 14 engages with groove 15, it will compress first airbag 16, which will deliver gas to first sealing bladder 17. A sealing bladder 17 seals the space between the first housing 1 and the second housing 2 to prevent external moisture from entering and causing safety hazards. When the mounting base 12 is connected to the wire 13, the anti-detachment plate 18 is rotated to insert the wire 13 into the mounting base 12. Then the anti-detachment plate 18 is released, and the torsion spring 19 rotates it, thereby clamping the wire 13 and strengthening the stability of the connection. After the anti-detachment plate 18 is reset, the pull rope 20 is released, and the pressure plate 21 slides under the action of the spring 23. The pressure plate 21 will then squeeze the second airbag 24, which delivers gas to the second sealing bladder 25, thereby sealing the space between the wire 13 and the mounting base 12. This ensures that the connection between the inside and outside of the fuse has good sealing performance.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-voltage fuse adaptable to fuses of different lengths, comprising a first housing (1), and a second housing (2) sleeved on the opposite side of the first housing (1), and a support column (3) fixedly installed at the bottom of both the first housing (1) and the second housing (2), and the bottom of the support column (3) is connected to the top of a base plate (4), while the base plate (4) is used for later installation and fixing with a wall or equipment; Its features are: Also includes: A knob (5) is provided in the middle of the top surface of the base plate (4), and a gear (6) is integrally connected to the bottom of the knob (5). The gear (6) is connected to the movable groove (8) by a bearing. The movable groove (8) is opened in the middle of the inner side of the base plate (4). At the same time, toothed plates (7) are connected to the front and rear sides of the gear (6). Each of the toothed plates (7) is equipped with a support column (3) at its top, and the middle part of the support column (3) is connected to the slide groove (9). The slide groove (9) is symmetrically opened on the top of the base plate (4), and the top of the support column (3) is located above the base plate (4). A protruding ring (14) is fixedly installed on the outer side wall of the left end of the second housing (2), and the protruding ring (14) engages with the groove (15). The grooves (15) are evenly spaced on the inner side wall of the first housing (1), and each groove (15) is equipped with a first airbag (16). The outlet of the first airbag (16) is connected to the first airbag (16). The first airbag (16) is installed on the inner wall of the right side of the first housing (1). Contact pieces (10) are installed on the opposing surfaces inside the first housing (1) and the second housing (2), and a fuse (11) is connected between the contact pieces (10). Mounting seats (12) are installed on the outer end faces of the first housing (1) and the second housing (2), and wires (13) are connected to the mounting seats (12) on both the left and right sides. The first housing (1) and the second housing (2) are fitted together, and both the first housing (1) and the second housing (2) are made of insulating material. The first housing (1) and the second housing (2) form a fusible structure through a contact piece (10), a fuse (11), a mounting base (12) and a wire (13). The cross sections of the convex ring (14) and the groove (15) are both set as hemispherical structures, and the convex ring (14) and the groove (15) are in a concave-convex fit. The convex ring (14) is made of rubber material, and the first shell (1) and the second shell (2) form an adjustment and fixing structure through the convex ring (14) and the groove (15). The outlet of the first airbag (16) in each of the grooves (15) is connected to the first sealing bag (17), and the first sealing bag (17) is configured as an annular structure, and the first sealing bag (17) is used to seal the first housing (1) and the second housing (2); The gear (6) meshes with the toothed plate (7), and the front and rear toothed plates (7) move in opposite directions. The toothed plate (7) is set in an "L" shape, and the toothed plate (7) slides in contact with the movable groove (8). The toothed plate (7) is vertically connected and fixed to the support column (3), and the support column (3) drives the first housing (1) and the second housing (2) to open and close. The mounting base (12) is symmetrically hinged with anti-detachment plates (18) at its outer end, and a torsion spring (19) is installed at the hinge of the anti-detachment plate (18). The opposite surface of the anti-detachment plate (18) is set as an arc structure to fit against the outside of the wire (13). A pull rope (20) is wound around the hinge of the anti-detachment plate (18), and the end of the pull rope (20) is connected to the pressure plate (21). The pressure plate (21) is connected to the cavity (22), and the cavity (22) is opened in the side wall of the mounting base (12). At the same time, a spring (23) is installed between the pressure plate (21) and the cavity (22). The cavity (22) is equipped with a second airbag (24), and the pressure plate (21) abuts against the second airbag (24). The second airbag (24) is connected to the second sealing bag (25), and the second sealing bag (25) is installed on the inner wall of the mounting base (12).

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