Clamping device for double parallel fuse

Abstract

The utility model belongs to the technical field of fuses, and relates to a clamping device for a double-parallel type fuse, which comprises a clip and an insulator, the clip is provided with two clamping parts from bottom to top, clamping pieces on two sides of an opening are respectively provided with a first clamping hole, clamping pieces on two sides of a middle section of the two clamping parts are respectively provided with a second clamping hole, and the insulator is arranged on the clip. The bottom of the clip is provided with a wiring nose, the clip is detachably connected to one end of the insulator through the fixing hole, and the other end of the insulator is fixedly connected with the back plate; fuses are respectively clamped in the clamping parts of the clips; the wiring noses at the two ends of the fuse are respectively connected to the fusing circuit; according to the utility model, the two fuses are fixedly connected together, the clip is fixedly connected through the standard component, and the two fuses are connected in parallel; compared with a large-size high-power fuse, the current flowing through each fuse of the fuse group is uniformly spread, so that heat dissipation and temperature rise reduction are facilitated, and the arc extinguishing performance of the whole fuse is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuses and relates to a clamping device for double-parallel fuses. Background Art

[0002] A fuse is an electrical protection device that automatically cuts off the circuit when the current in the circuit exceeds the rated value to prevent damage caused by overload or short circuit. A fuse is mainly composed of one or more fuses (fuse wires). When the current is too large, the fuse will melt due to overheating, thereby cutting off the circuit. Fuses are widely used in household appliances, industrial equipment, automotive circuits, power distribution systems, etc. There are different types of fuses, including tube fuses, blade fuses, spiral fuses, fast fuses, etc. When selecting a fuse, you need to determine the appropriate type and specification based on the actual current load, voltage level, and protection requirements of the circuit.

[0003] However, for customers who require fuses with larger rated voltages, due to the limitations of the size and manufacturing of existing single-tube fuses, as well as installation space restrictions, existing fuses and fuse clamping devices have been unable to meet the design requirements of larger rated currents and larger capacities. Although the utility model CN219610341U discloses a double-parallel fuse, this double-parallel fuse needs to be produced in parallel by the manufacturer, which has a high cost due to low output and complex process. In addition, in equipment such as miniaturized transformer cabinets, the space is small, and it is difficult to install double-parallel fuses at the same time. Moreover, since the double-parallel fuses are shipped from the factory, the damage of one of the fuses often causes the entire double-parallel fuse to be unusable, resulting in high installation and maintenance costs, and inconvenience to installation and maintenance personnel.

[0004] Therefore, there is an urgent need for a simpler, more convenient, reliable, low-cost, and easy-to-operate fuse or fuse clamping device to solve this technical problem. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: a clamping device for a double parallel fuse, comprising: a clamp, an insulator, the clamp is in a U-shape with an opening at the top and a bending at the bottom, a fixing hole is provided at the bottom of the clamp, two clamping parts are provided from bottom to top, first clamping holes are respectively provided on the clamps at both sides of the opening, second clamping holes are respectively provided on the clamps at both sides of the middle section of the two clamping parts, clamping bolts are penetrated in the first clamping hole and the second clamping hole, a wiring nose is provided at the bottom of the clamp, and the clamp and the wiring nose are both made of conductive materials;

[0006] The insulator is made of insulating material, the clip is detachably connected to one end of the insulator through a fixing hole, and the other end of the insulator is fixedly connected to the back plate;

[0007] Fuses are respectively clamped in the clamping parts of the clamps;

[0008] The lugs at both ends of the fuse are connected to the fuse circuits respectively.

[0009] Preferably, the second clamping holes are provided in two rows, the upper row of second clamping holes is close to the arc-shaped lower edge of the upper clamping portion, and the lower row of second clamping holes is close to the arc-shaped upper edge of the lower clamping portion.

[0010] Preferably, the clamping bolt is a standard part.

[0011] Preferably, the wiring nose and the clip are integrally formed.

[0012] Preferably, the wiring nose and the clip are made separately, and the wiring nose and the clip are conductively connected together after being tightened and fitted by fixing bolts.

[0013] Preferably, the fuse includes: a double parallel type fuse and a single tube type fuse.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model can continue to use the conventional single-tube fuse product size, reduce production costs, and has a simple structure and is easy to install.

[0016] 2. The carrying current of each fuse of the utility model is reduced, the temperature rise of the product is reduced, the arc extinguishing efficiency of the fuse is improved, and the stability of the product is improved.

[0017] 3. The utility model is aimed at equipment such as miniaturized transformer cabinets and is easy to install and adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-view drawing of a clamping device for a double-parallel fuse of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the utility model;

[0020] Figure 3 It is a clip parts diagram of the utility model.

[0021] Among them, 1. clip; 2. insulator; 3. opening; 4. fixing hole; 5. clamping part; 6. first clamping hole; 7. second clamping hole; 8. clamping bolt; 9. wiring nose; 10. back plate; 11. fuse; 12. fixing bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the relevant technologies in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] refer to Figures 1 to 3 The utility model discloses a clamping device for a double parallel fuse, comprising: a clamp 1, an insulator 2, the clamp 1 is in a U-shape with an opening 3 at the top and a bent U-shape at the bottom, a fixing hole 4 is provided at the bottom of the clamp 1, two clamping parts 5 are provided from bottom to top, first clamping holes 6 are provided on the clamps at both sides of the opening 3, second clamping holes 7 are provided on the clamps at both sides of the middle section of the two clamping parts 5, clamping bolts 8 are penetrated in the first clamping holes 6 and the second clamping holes 7, a wiring nose 9 is provided at the bottom of the clamp 1, the clamp 1, the clamping parts 5, the clamping parts 6, the clamping parts 7, the clamping parts 8, the clamping parts 9, the clamping parts 1 ... The wire noses 9 are all made of conductive materials, and the clips 1 are used in pairs. After the fuse 11 is mounted on the clip 1, the clamping bolts 8 passing through the first clamping hole 6 and the second clamping hole 7 are tightened, so that the cards on both sides of the clip 1 fit inwardly, and the inner side of the card is electrically connected with the metal cap of the fuse 11, thereby realizing the electrical connection of the fuse; the clip 1 and the wire nose 9 are made of metal with good conductivity, such as copper, and the outer layer of the clip 1 and the wire nose 9 can be silver-plated, so that the resistance of the clamping device is smaller, the contact conductivity is better, and the heat generation is reduced;

[0024] The insulator 2 is made of insulating material, the clip 1 is detachably connected to one end of the insulator 2 through the fixing hole 4, and the other end of the insulator 2 is fixedly connected to the back plate 10; the clip 1 is fixed by the insulator 2, and a multi-connection fuse clamping device can be extended according to specific needs, which is suitable for electrical cabinets in narrow spaces where large fuses cannot be installed, and the fuse requirements with large rated current and large capacity can be met by multi-connection of ordinary single-tube fuses;

[0025] The clamping parts 5 of the clamp 1 are respectively clamped with fuses 11, and the card edges of the clamping parts 5 protrude outwards, and the shape contour matches the outer contour of the metal caps at both ends of the fuse 11, so that the clamping parts 5 can achieve good electrical conduction with the fuse 11 while being clamped;

[0026] The connection lugs 9 at both ends of the fuse 11 are connected to the fuse circuits respectively.

[0027] Furthermore, the second clamping holes 7 are provided in two rows, the upper row of second clamping holes 7 is close to the arc-shaped lower edge of the upper clamping part 5, and the lower row of second clamping holes 7 is close to the arc-shaped upper edge of the lower clamping part 5. The double rows of second clamping holes 7 can make the fuses 11 at the upper and lower clamping parts 5 closely contact and conduct with the cards of the two clamping parts 5, thereby achieving good electrical conduction, reducing the resistance of the clamping device, and reducing heat generation.

[0028] Furthermore, the clamping bolt 8 is a standard part; the standard clamping bolt 8 is industrially produced in large quantities, which can reduce the spare parts cost of the clamping device. At the same time, when the clamping device is lost during use, the clamping bolt 8 can be obtained faster and easier, thereby enhancing the applicability of the clamping device.

[0029] Furthermore, the wiring nose 9 and the clip 1 are integrally formed; the integrally formed wiring nose 9 and the clip 1 have better conductivity, and will not produce resistance changes and heat and sparking due to poor bonding of the bonding parts.

[0030] Furthermore, the wiring nose 9 and the clip 1 are made separately, and the wiring nose 9 and the clip 1 are conductively connected together after being tightened and fitted by the fixing bolts 12; the separate manufacturing and use can reduce the production cost of the clip 1, and during use, whether the wiring nose 9 or the clip 1 is damaged, only the damaged parts need to be replaced without replacing the entire clamping device, so the adaptability is better.

[0031] Furthermore, the fuse 11 includes: a double-parallel type fuse and a single-tube type fuse; the clamping device for the double-parallel type fuse can use not only the existing double-parallel type fuse, but also the single-tube type fuse that is mass-produced and widely used. Therefore, when the fuse blows and needs to be replaced, the most convenient and easily available type of fuse can be selected according to the reserves and on-site conditions, so that troubleshooting is more convenient and quick.

[0032] In summary, the utility model is composed of two fuses fixedly connected together, the clips are fixedly connected through standard parts, and the two fuses are connected in parallel; compared with large-sized high-power fuses, the current flowing through each fuse of this fuse group is evenly distributed, which is convenient for heat dissipation, reduces temperature rise, and the arc extinguishing performance of the entire fuse is more stable. Therefore, the utility model has a wide range of application prospects.

[0033] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A clamping device for a double parallel fuse, characterized in that: include: A clip (1) and an insulator (2), wherein the clip (1) is in a U-shape with an opening (3) at the top and a bend at the bottom, a fixing hole (4) at the bottom of the clip (1), two clamping parts (5) from bottom to top, first clamping holes (6) are respectively provided on the clamps at both sides of the opening (3), and second clamping holes (7) are respectively provided on the clamps at both sides of the middle section of the two clamping parts (5), clamping bolts (8) are passed through the first clamping holes (6) and the second clamping holes (7), a wiring nose (9) is provided at the bottom of the clip (1), and the clip (1) and the wiring nose (9) are both made of conductive materials; The insulator (2) is made of insulating material, the clip (1) is detachably connected to one end of the insulator (2) through a fixing hole (4), and the other end of the insulator (2) is fixedly connected to a back plate (10); Fuses (11) are respectively clamped in the clamping parts (5) of the clamps (1); The wiring lugs (9) located at both ends of the fuse (11) are respectively connected to fuse circuits.

2. A clamping device for a double parallel fuse according to claim 1, characterized in that: The second clamping holes (7) are provided in two rows, the upper row of the second clamping holes (7) being close to the arc-shaped lower edge of the upper clamping portion (5), and the lower row of the second clamping holes (7) being close to the arc-shaped upper edge of the lower clamping portion (5).

3. A clamping device for a double parallel fuse according to claim 1, characterized in that: The clamping bolt (8) is a standard part.

4. A clamping device for a double parallel fuse according to claim 1, characterized in that: The wiring nose (9) and the clip (1) are integrally formed.

5. A clamping device for a double parallel fuse according to claim 1, characterized in that: The wiring nose (9) and the clip (1) are made as separate parts, and the wiring nose (9) and the clip (1) are electrically connected after being tightened and fitted together by a fixing bolt (12).

6. A clamping device for a double parallel fuse according to claim 1, characterized in that: The fuse (11) comprises: a double-parallel fuse and a single-tube fuse.

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