CN211719547U

CN211719547U - Integrated box-packed fuse

Info

Publication number: CN211719547U
Application number: CN201922432272.XU
Authority: CN
Inventors: 黄正信; 刘复强; 林育民; 徐燕梅
Original assignee: Lizhi Electronics Nantong Co ltd
Current assignee: Lizhi Electronics Nantong Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-20
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a box-packed fuse of disjunctor formula, close including one end open-ended box body and lid the apron of box body open end still includes electrode slice and fuse, the middle part of electrode slice is located the inside of box body, the outside of box body is extended to at the electrode slice both ends, the fuse attached be located inside the box body on the electrode slice. The utility model discloses a fuse simple structure, small can satisfy intelligent product miniaturization, high-accuracy demand, the easy simple and convenient installation of non-directivity. And the fuse is integrally and firmly combined without gaps, is accurate and simple to assemble, has strong shock resistance, can prevent external rain erosion and the like, and can be used in extreme environments.

Description

Integrated box-packed fuse

Technical Field

The utility model belongs to the technical field of the protection circuit, concretely relates to box-packed fuse of disjunctor formula.

Background

Fuses are widely used in electrical circuits of electronic products and motor devices, and mainly serve as an overload protection function to prevent damage of excess current. The fuse can protect the principle of the product, namely, the fuse can be fused due to overheating when overload current passes through a conductive fuse with proper impedance, so that the current is cut off. However, after the fuse is heated by excessive current, high energy is released instantly and locally before the fuse is completely blown out, and the arc with extremely strong destructive power is an important factor to be considered in designing and manufacturing the fuse.

The existing fuse is mainly characterized in that a plurality of fuses are fixed inside a tube body in a welding mode, each fuse is connected with terminals on the periphery of the tube body in a welding mode and then combined with the tube body, and the terminals are fixed with the tube body through rivets. Not only the whole device is bulky, can not satisfy intelligent product miniaturization, high-accuracy demand, and spare part is in large quantity, and is with high costs. In addition, the fuse is usually connected in series in a circuit, but the existing fuse is low in strength, easy to break due to external impact, low in safety performance, easy to be stained with dust or damaged in some outdoor or extreme environments to influence the service life, easy to generate potential safety hazards, inconvenient to install, or directional, so that the structural design and manufacturing of the fuse are provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a box-packed fuse of disjunctor formula.

Realize above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

a one-piece, box-packed fuse, comprising: the electrode plate comprises a box body with an opening at one end, a cover plate covering the opening end of the box body, an electrode plate and a fuse wire, wherein the middle of the electrode plate is located inside the box body, the two ends of the electrode plate extend to the outside of the box body, and the fuse wire is attached to the electrode plate located inside the box body.

As a further improvement of the present invention, the electrode plate is attached to the cover plate or the surface of the case body, and the end of the electrode plate is embedded into the side wall of the case body.

As a further improvement of the utility model, the electrode slice be the paddle form when not buckling, including the linear conductor that is located the centre and the slice conductor that is located both sides, be located inside the electrode slice is greater than with the distance of stretching out two broken lines of the electrode slice between the box body outside the length of linear conductor stretches out the box body outside the slice conductor respectively with the apron with the slice conductor with the intersection line of box body carry out the substep and buckle for the broken line.

As a further improvement of the utility model, the linear conductor is in a linear shape or a broken line shape.

As a further improvement of the utility model, the electrode slice is a circular or polygonal conductor wire with a cross section, the number of polygonal sides is greater than or equal to 3, preferably an equilateral polygon.

As a further improvement of the utility model, the cover plate is provided with an inserting seam or a round hole for extending the electrode plate out of the box body.

As a further improvement of the present invention, the fuse is attached to the surface of the linear conductor.

As a further improvement, the box body and the contact surface of the cover plate are step-shaped, and the contact surfaces are provided with mutually matched clamping groove structures.

As a further improvement of the utility model, the box body and the cover plate are made of insulating materials.

As a further improvement of the utility model, the box body is internally provided with a filler, and the filler is selected from arc extinguishing slurry or quartz sand.

The utility model has the advantages that: the utility model discloses a fuse simple structure, and the fuse possesses the dual function of resistor and fuse, and the metal material of accessible adjustment metal heat-conducting layer is constituteed, cladding material thickness, cladding material area can obtain the fuse product of various specifications, and the product suitability is strong, and small again can satisfy intelligent product miniaturization, high accurate demand, the easy simple and convenient installation of non-directivity. And the fuse is integrally and firmly combined without gaps, is accurate and simple to assemble, has strong shock resistance, can prevent external rain erosion and the like, and can be used in extreme environments.

Drawings

Fig. 1 is a schematic structural diagram of a product according to an embodiment of the present invention;

fig. 2 is a schematic view of an electrode plate according to a first embodiment of the present invention;

fig. 3 is a schematic view of a second embodiment of the present invention;

fig. 4 is a schematic view of a third embodiment of the present invention;

wherein: 01-box body, 02-cover plate, 03-electrode slice, 031-foot slice, 04-fuse wire, 05-filler, 06-sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following description is made in detail for the application of the principles of the present invention with reference to the accompanying drawings.

The integrated box-packed fuse comprises a box body 01 with an opening at one end, a cover plate 02 covering the opening end of the box body 01, an electrode plate 03 and a fuse wire 04, wherein the middle of the electrode plate 03 is positioned inside the box body 01, two ends of the electrode plate 03 extend to the outside of the box body 01, and the electrode plate 03 extending to the outside of the box body 01 is used as a foot plate 031.

The fuse 04 is attached to the electrode plate 03 located inside the case 01. The utility model discloses in except that fuse 04 possesses fuse fusing function still can obtain the target resistance of required size through the metal material composition of adjustment metal heat-conducting layer, cladding material thickness, cladding material area to realize the dual function of resistor and fuse.

The electrode tabs 03 extending to the outside of the case 01 as shown in fig. 1 are attached to the surface of the cover plate 02 or the case 01, and the ends of the electrode tabs 03 are embedded in the side walls of the case 01.

In the two embodiments shown in fig. 2 and fig. 3, the electrode sheet 03 is paddle-shaped when not bent, and includes a linear conductor located in the middle and sheet conductors located on both sides, the distance between the electrode sheet 03 located inside and the two folding lines of the electrode sheet 03 extending out of the box body 01 is greater than the length of the linear conductor, and the sheet conductor extending out of the box body 01 is bent by using the intersection line of the cover plate 02 and the sheet conductor and the box body 01 as a second folding line and a third folding line, respectively. And attaching electric conductors extending out of the box body 01 to the surfaces of the cover plate 02 and the box body 01.

In the above two embodiments, the fuse 04 is attached to the surface of the linear conductor.

The linear conductor according to the first embodiment shown in fig. 2 is linear, and the linear conductor according to the second embodiment shown in fig. 3 is a broken line. Compared with the first embodiment, the second embodiment adopts a few style of calligraphy heat dissipation paths longer, and the heat loss reduces the clutter that the contact friction arouses that point discharge produces and effectively promotes the anti surge performance of product that can bear the weight of, and fusing speed is accelerated when only the low power fault current of rated current 1.5 ~ 3 times produces moreover, can in time break off protection circuit safety and avoid the emergence of accident or conflagration.

In a third embodiment shown in fig. 4, the electrode sheet 03 is a conductive wire with a circular cross section. The leg portion 031 extending outside the cover plate 02 is bent. Meanwhile, in the embodiment, the two leg pieces are embedded in the contact surface with the cover plate 02, and the sealing ring 06 is arranged.

In addition, the contact surface of the box body 01 and the cover plate 02 is step-shaped, and the contact surface of the box body 01 and the cover plate 02 is provided with a clamping groove structure matched with each other. The box body 01 and the cover plate 02 are made of insulating materials, and are selected from any one of ceramics, plastics, nylon, bakelite or PBT engineering plastics.

The cover plate 02 is provided with an inserting slit or a round hole for the electrode plate 03 to extend out of the box body 01.

The box body 01 is internally provided with a filler 05, and the filler 05 is selected from arc extinguishing slurry or quartz sand and is used for blocking electric arcs generated by fuse burning at the moment of fuse breaking, so that the generation of heat inside the fuse is reduced, and the safety index is effectively improved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An integrated box-packed fuse is characterized in that: including one end open-ended box body (01) and lid close apron (02) of box body open end still include electrode slice (03) and fuse (04), the middle part of electrode slice (03) is located the inside of box body (01), the outside of electrode slice (03) both ends extend to box body (01), fuse (04) attached be located inside box body (01) electrode slice (03) are last.

2. The integrated box fuse according to claim 1, wherein: the electrode plate (03) extending to the outside of the box body (01) is attached to the cover plate (02) or the surface of the box body (01), and the tail end of the electrode plate (03) is embedded into the side wall of the box body (01).

3. A one-piece box-packed fuse according to claim 2, characterized in that: the electrode slice (03) is paddle-shaped when not bent, and comprises a linear conductor positioned in the middle and sheet conductors positioned on two sides, wherein the distance between the electrode slice (03) and two fold lines extending out of the electrode slice (03) between the outer sides of the box body (01) is larger than the length of the linear conductor, and the sheet conductors extending out of the box body (01) are bent step by taking the intersection lines of the cover plate (02) and the sheet conductors and the box body (01) as fold lines.

4. A one-piece box-packed fuse according to claim 3, characterized in that: the linear conductor is linear or broken line type.

5. The integrated box fuse according to claim 1, wherein: the electrode plate (03) is a conductive wire with a circular or polygonal cross section, and the number of polygonal sides is more than or equal to 3.

6. A one-piece box-packed fuse according to claim 3 or 5, characterized in that: the cover plate (02) is provided with an inserting seam or a round hole for the electrode plate (03) to extend out of the box body (01).

7. A one-piece box-packed fuse according to claim 3 or 4, characterized in that: the fuse (04) is attached to the surface of the linear conductor.

8. The integrated box fuse according to claim 1, wherein: the contact surface of the box body (01) and the cover plate (02) is step-shaped, and the contact surfaces of the box body and the cover plate are provided with mutually matched clamping groove structures.

9. The integrated box fuse according to claim 1, wherein: the box body (01) and the cover plate (02) are made of insulating materials.

10. The integrated box fuse according to claim 1, wherein: the novel arc extinguishing box is characterized in that a filler (05) is arranged inside the box body (01), and the filler (05) is selected from arc extinguishing slurry or quartz sand.