CN217691040U - High-safety sheet-shaped thermosensitive fuse - Google Patents

Abstract

The utility model relates to a fuse technical field, specific high slice thermal fuse of security that says so, include: the fuse device comprises a shell, a first mounting bin is arranged at the lower end of the shell, a fuse main body is arranged inside the first mounting bin, and the lower end of the fuse main body penetrates through the outside of the first mounting bin; the flame retarding mechanisms are used for preventing the shell from burning, and are arranged in the shell; through setting up fire-retardant mechanism, when the fuse main part fusing, reinforcing mesh and first elastic capsule can be lighted to the produced high temperature of fuse main part fusing, the surface of first elastic capsule produces the breach, the dry powder fire extinguishing agent can produce the breach along the surface of first elastic capsule and gush out first elastic capsule fast to cover the surface of fuse main part, it is isolated with air and fuse main part, the probability that the fuse main part lighted the casing has been reduced effectively, with the factor of safety that improves the whole use of slice fuse.

Description

High-safety sheet-shaped thermosensitive fuse

Technical Field

The utility model relates to a fuse technical field, very much relate to a high slice thermal fuse of security.

Background

The chip thermal fuse can also be called as a plug-in chip fuse, the thermal fuse mainly has the function of protecting electrical equipment from burning electrical appliances due to overheating, when a motor fails, the fuse is fused to avoid the motor from being damaged, at present, because the shell of the chip fuse is mostly made of plastics, when the fuse wire of the chip fuse is fused, a lot of heat can be generated, the plastic shell is easily ignited by the heat, and the safety accident that the circuit is on fire is easily caused, which is the problem to be solved at present.

Therefore, a high-safety sheet-shaped thermal fuse is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a following technical scheme realizes above-mentioned purpose, the high slice thermal fuse of security, include: the fuse device comprises a shell, a first mounting bin is arranged at the lower end of the shell, a fuse main body is arranged inside the first mounting bin, and the lower end of the fuse main body penetrates through the outside of the first mounting bin; the flame-retardant mechanism is used for preventing the shell from burning, and the two flame-retardant mechanisms are arranged in the shell.

Preferably, the inside of casing is seted up quantity and is two and all with the second installation storehouse of first installation storehouse intercommunication, fire-retardant mechanism is including bonding in the inside first elastic capsule in second installation storehouse, the inside packing of first elastic capsule has the dry powder fire extinguishing agent.

Preferably, the two second mounting bins are symmetrically distributed on the front side and the rear side of the fuse main body, and the cross sections of the second mounting bins are T-shaped.

Preferably, the inner wall of the second mounting bin is bonded with two second elastic capsules which are in contact with the first elastic capsules, and inert gas is filled in the second elastic capsules.

Preferably, the two second elastic capsules are symmetrically distributed at the left side and the right side of the first elastic capsule, and the inert gas is in a compressed state at the moment.

Preferably, the inner wall of the second mounting bin is fixedly connected with a reinforcing net in contact with the first elastic capsule, and the reinforcing net is arranged at the side end, close to the fuse main body, of the first elastic capsule.

Preferably, the reinforcing net is a nylon fiber material component, and the shape of meshes of the reinforcing net is in a groined shape.

The utility model has the advantages that:

1. by arranging the flame-retardant mechanism, when the fuse main body is fused, the reinforcing net and the first elastic capsule can be ignited by high temperature generated by fusing the fuse main body, the surface of the first elastic capsule is provided with a cut, and the dry powder extinguishing agent can quickly burst out of the first elastic capsule along the cut generated on the surface of the first elastic capsule and cover the surface of the fuse main body to isolate air from the fuse main body, so that the probability of igniting the shell by the fuse main body is effectively reduced, and the safety coefficient of the integral use of the sheet fuse is improved;

2. through the cooperation use of second elasticity capsule and inert gas, after the surface production breach of first elasticity capsule, first elasticity capsule loses the resistance, and the inert gas of the inside compression of second elasticity capsule is unchangeable to the pressure of first elasticity capsule, inert gas just can extrude its inside dry powder extinguishing agent through first elasticity capsule and second elasticity capsule fast, in order to accelerate the speed that dry powder extinguishing agent covers fuse main part surface, simultaneously when the second elasticity capsule is lighted to the fuse main part, inside inert gas can fill the inside of casing fast, with fuse main part and air isolated, thereby reach dual fire-retardant effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic vertical sectional view of the present invention;

FIG. 3 is a schematic view of a horizontal cross-sectional structure of the present invention;

fig. 4 is a schematic diagram of the explosion structure of the present invention.

In the figure: 1. a housing; 101. a first installation bin; 102. a second mounting bin; 2. a fuse body; 3. a flame retardant mechanism; 301. a first elastomeric bladder; 302. a dry powder extinguishing agent; 303. a second elastomeric bladder; 304. an inert gas; 305. a reinforcing mesh.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the specific implementation: as shown in fig. 1 to 4, a sheet type thermal fuse having high safety includes: the fuse structure comprises a shell 1, wherein a first installation bin 101 is formed in the lower end of the shell 1, a fuse main body 2 is arranged inside the first installation bin 101, and the lower end of the fuse main body 2 penetrates through the outer part of the first installation bin 101; the quantity is two fire-retardant mechanism 3 for two fire-retardant mechanism 3 that prevent casing 1 burning all install in the inside of casing 1, and first elasticity capsule 301 and second elasticity capsule 303 are the chloroprene rubber material component, and chloroprene rubber has good physical and mechanical properties, and is resistant oily, heat-resisting, fire-resistant, resistant sunlight, resistant ozone, acid and alkali-resistance, resistant chemical reagent, have higher tensile strength, elongation and reversible crystallinity, and the adhesion is good, ageing-resistant, heat-resisting. The rubber has excellent oil resistance and chemical corrosion resistance, weather resistance and ozone aging resistance which are second to those of ethylene propylene rubber and butyl rubber, heat resistance which is equivalent to that of nitrile rubber, decomposition temperature of 230-260 ℃, 120-150 ℃ resistance in a short term, long-term use at 80-100 ℃, and certain flame retardance.

As shown in fig. 2-4, two second installation chambers 102 are disposed inside the housing 1 and both communicate with the first installation chamber 101, the flame retardant mechanism 3 includes a first elastic capsule 301 adhered inside the second installation chamber 102, the first elastic capsule 301 is filled with a dry powder extinguishing agent 302, the dry powder extinguishing agent 302 can be formed by mixing baking soda, magnesium stearate and silica gel, the specific ratio needs to be selected according to actual conditions, the dry powder extinguishing agent 302 covers the solid combustion object to form an isolation layer for obstructing combustion, and simultaneously, non-combustible gas is separated out, so that the oxygen concentration in the air is reduced, flames are extinguished, the two second installation chambers 102 are symmetrically distributed on the front and rear sides of the fuse main body 2, the cross-sectional shape of the second installation chamber 102 is T-shaped, the inner wall of the second installation chamber 102 is adhered with two second elastic capsules 303 both contacting with the first elastic capsule 301, the inert gas 304 is filled in the second elastic capsule 303, the inert gas 304 can be carbon dioxide gas, the carbon dioxide gas does not support combustion, and can isolate combustible substances and air, thereby achieving the purpose of fire extinguishing, and the carbon dioxide gas is heavier than nitrogen gas and is easy to cover the surface of a combustion object, thereby playing a role of isolating air, when the fuse main body 2 ignites the second elastic capsule 303, the inert gas 304 in the second elastic capsule 303 can rapidly fill the inside of the shell 1, so as to isolate the fuse main body 2 from air, thereby achieving the effect of dual flame retardance, the two second elastic capsules 303 are symmetrically distributed at the left side and the right side of the first elastic capsule 301, the inert gas 304 is in a compressed state at the moment, the reinforcing mesh 305 is fixedly connected to the inner wall of the second installation bin 102 and is in contact with the first elastic capsule 301, the reinforcing mesh 305 is arranged at the side end of the first elastic capsule 301 close to the fuse main body 2, the reinforcing net 305 is a nylon fiber material member, the mesh shape of the reinforcing net 305 is in a # -shape, nylon can be called as nylon or polyamide, the most outstanding advantage is that the wear resistance is higher than that of all other fibers, and the polyamide has the advantages of no toxicity, light weight, excellent mechanical strength, wear resistance and better corrosion resistance, so the polyamide is widely applied to replace metals such as copper and the like to manufacture bearings, gears, pump blades and other parts in the industries such as machinery, chemical engineering, instruments, automobiles and the like, and the polyamide has very high strength after being melt-spun into filaments.

The utility model discloses when using, when fuse main part 2 fuses, reinforcing mesh 305 and first elastic capsule 301 can be lighted to the produced high temperature of fuse main part 2 fusing, the surface of first elastic capsule 301 produces the breach, first elastic capsule 301 loses the resistance, and the inert gas 304 of the inside compression of second elastic capsule 303 is unchangeable to first elastic capsule 301's pressure, inert gas 304 just can extrude its inside dry powder fire extinguishing agent 302 through first elastic capsule 301 and second elastic capsule 303 fast, dry powder fire extinguishing agent 302 can produce the breach along first elastic capsule 301's surface and gush out first elastic capsule 301 fast, and cover fuse main part 2's surface, it is isolated with air and fuse main part 2, the probability of casing 1 is lighted to fuse main part 2 has been reduced effectively, with the factor of safety that improves slice fuse whole use.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. A high-safety chip thermal fuse, comprising:

the fuse assembly comprises a shell (1), wherein a first installation bin (101) is formed in the lower end of the shell (1), a fuse main body (2) is arranged inside the first installation bin (101), and the lower end of the fuse main body (2) penetrates through the outside of the first installation bin (101);

the flame retardant mechanism (3) is two in number, and the two flame retardant mechanisms (3) used for preventing the shell (1) from burning are arranged in the shell (1).

2. A high-safety chip thermal fuse according to claim 1, wherein: the utility model discloses a fire-retardant fire-extinguishing dry powder fire-extinguishing agent, including casing (1), fire-retardant mechanism (3) is including bonding in the inside first elastic capsule (301) in second installation storehouse (102), the inside packing of first elastic capsule (301) has dry powder fire-extinguishing agent (302), the inside second installation storehouse (102) that is quantity for two and all communicates with first installation storehouse (101) is seted up to casing (1).

3. A high-safety chip thermal fuse according to claim 2, wherein: the two second mounting bins (102) are symmetrically distributed on the front side and the rear side of the fuse main body (2), and the cross section of each second mounting bin (102) is T-shaped.

4. A high-safety chip thermal fuse according to claim 2, wherein: the inner wall of the second mounting bin (102) is bonded with two second elastic capsules (303) which are in contact with the first elastic capsules (301), and the interior of each second elastic capsule (303) is filled with inert gas (304).

5. A high-safety chip thermal fuse according to claim 4, wherein: the two second elastic capsules (303) are symmetrically distributed at the left side and the right side of the first elastic capsule (301), and the inert gas (304) is in a compressed state at the moment.

6. The chip thermal fuse with high safety as set forth in claim 4, wherein: the inner wall of the second mounting bin (102) is fixedly connected with a reinforcing net (305) which is in contact with the first elastic capsule (301), and the reinforcing net (305) is arranged at the side end, close to the fuse main body (2), of the first elastic capsule (301).

7. A chip thermal fuse having high safety as set forth in claim 6, wherein: the reinforcing net (305) is a nylon fiber material component, and the shape of the meshes of the reinforcing net (305) is in a groined shape.

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