CN2037104U

CN2037104U - Organic compound type temp. limiting breaker

Info

Publication number: CN2037104U
Application number: CN 88219253
Authority: CN
Inventors: 吴勇为
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-23
Filing date: 1988-08-23
Publication date: 1989-05-03

Abstract

The utility model discloses an organic compound type temp. limiting breaker which is a heat protective element of an electric appliance. Owing to the structure and the volume of the existing protector, the existing protector can not be installed in a heating element. The breaker is provided with a temperature sensitive body and a push block in a rectangular box body. The right angle ends of two pieces of metal sheets in X-shaped contact are engaged with the push block, and the other ends are embedded into a rabbet at the side wall of the box body and penetrate out. The utility model can be arranged in the heating element or on the surface of the heating element, and has the advantages of simple structure, small volume, sensitive action and good performance.

Description

Organic compound type temp. limiting breaker

The utility model claims temperature limitation protector or Thermal Cutoffs again, is a kind of thermal protective element of electrical equipment.

Number of patent application is 88 2 11132.9, and the applying date 880307, it is the patent application that I propose to Patent Office of the People's Republic of China that name is called " a kind of organic compound type temperature limitation protector ".Prior art to relevant temperature limitation protector in the specification of these application documents is described.

Application number be 88 2 11132.9 " a kind of organic compound type temperature limitation protector " be a kind of be the temperature limitation protector of heat-conducting medium with the metal; can be used for pyrotoxin is metal, the size of protector placement space is not had similar refrigerator, motor and other electric product of specific (special) requirements.But have a lot of electric product requirements that temperature limitation protector (circuit breaker) is placed in the heater element body, this heater element generally is approved product, and the space of supplying with the warm circuit breaker arrangement of limit is very small.For example; the accommodation space that transformer line bag inside can provide only is 15 * 3 * 5(millimeter); and it to require the shell of circuit breaker be that nonmetallic materials are produced; more bigger metal shell promptly can produce eddy current; influence the electrical property of coil; and application number is 88 2 11132.9 temperature limitation protector; its volume length * wide * height is 20 * 4 * 7(millimeter) or 20 * 5 * 9(millimeter); the temperature limitation protector volume that Japan produces is 15 * 4 * 4(millimeter) or 12 * φ 4(millimeter); and the housing of these two kinds of protectors all is a metal material, so can not be used for transformer line bag inside, the temperature limitation protector that can be applied at present in the heater element body is a kind of low-melting alloy type; it is temperature sensor (thermo-detective material) with the low-melting alloy; its advantage is simple in structure, and volume is little, is 5 * 5 * 3(millimeter); cost is low; its shortcoming is the easy oxidation of alloy surface, and stability is relatively poor, and temperature sensor itself is as the current-carrying element; therefore operating temperature is subjected to the influence of size of current easily, and promptly precision is low.

The purpose of this utility model is to adopt organic compound as thermo-detective material, to guarantee its operating temperature precision height, stable performance, intrinsic advantages such as current capacity is big are prerequisite, design a kind of simple in structure, volume is small, particularly can be placed in the limit temperature circuit breaker in the heater element body.

Its technical scheme is: box body is a cuboid, form by lid and box, jacking block has two road embeded slots, one end of sheet metal (lead-in wire) is bent into the right angle, one end of box body is placed with thermo-detective material and jacking block, two sheet metals (lead-in wire) that are the contact of X type, its right angle end and jacking block are chimeric, and the notch of other end built-in box body sidewall also passes sidewall.

During use circuit breaker is connected with the heater element of protected electrical equipment, electric current is by circuit breaker, and electrical equipment normally moves.When heater element arrives design temperature, the thermo-detective material fusing, the pretightning force of two X-shaped sheet metals obtains discharging, and makes the jacking block displacement, and the contact point of two sheet metals disconnects rapidly, cuts off circuit, has protected electric equipment.

With drawings and Examples technical scheme is described further below.

Fig. 1 is the utility model general structure schematic diagram.

Fig. 2 is the limit temperature breaker structure schematic diagram that the thermal-arrest plate is housed.

Fig. 3 is sheet metal (lead-in wire) structural representation.

Fig. 4 is the ejecting block schematic diagram.

Fig. 5 is the box-shaped structure schematic diagram.

Fig. 6 is the lid structural representation.

(1) is box among the figure, and (2) are thermo-detective materials, and (3) are jacking blocks, and (4) are sheet metal (lead-in wires), and (5) are lids, and (6) are the thermal-arrest plates, and (7) are notches, and (8) are boss, and (9) are recesses, and (10) are embeded slots.

Embodiment 1:

Box body (comprising (1) and (5)) and jacking block (3) are produced with bakelite or plastics, and heatproof is between 145～200 ℃, and sheet metal (4) is by the high resiliency copper sheet or the copper-manganese sheet is silver-plated produces.

A small boss (8) is arranged at the bottom of box side wall notch (7), and the corresponding position of sheet metal and small boss (8) has recess (9), can be chimeric mutually.

Jacking block (3) and sheet metal (4) can be two independent parts, also can adopt the mosaic technology of plastics or bakelite and metal that jacking block and two sheet metals (4) are made a single piece.

Whole the workpiece of assembling after finishing immerses high-temperature insulating paint such as polyimide liquid, makes it to be enclosed with one deck insulating varnish, and it has the effect of sealing, insulation, attractive in appearance, protection font (model on the box body and patent marking etc.).This limit temperature breaker structure is very simple, and volume is small, and can accomplish only has 12 * 4 * 2.5(millimeter), suitablely especially be applied to the electric product that need such as similar transformer are placed in circuit breaker heater element inside.

Embodiment 2:

A distolateral wall of placing thermo-detective material at box (1) is inlaid with the collector metal plate (6) that has installing hole, and it can adopt the mosaic technology of plastics or bakelite and metal to produce.This limit temperature circuit breaker can be fixed on may taking place on the overheated element of electrical equipment, and gets final product with circuit welding series connection.

Embodiment 3:

With limitting the free-end of two sheet metals (4) of warm circuit breaker respectively to be bent into a rectangular contacts, make a kind of circuit breaker of contact-type.Just need not connect during use, need only contact as the electric contact of battery and electric elements and get final product (circuit breaker box is arranged), replace very convenient with the circuit welding of electric elements.

The utility model is applied widely, can be installed in inside or the appearance of heater element, and the former is its outstanding advantage. Its structure is very simple, and volume is small, is convenient to processing, and cost is low, and is agile, limits warm wide ranges (60～200 ℃), box body insulation, sealing, no excessive, corrosion-resistant. By the 691-80 of International Electrotechnical Commission (IEC) standard test, its important technological parameters is as follows:

Limit warm precision height+0 ,-5, shell and lead wire insulation 2000M Ω, contact is big, disconnected before resistance≤5M Ω, insulation 2000V 50HZ between lead-in wire, leakage distance assurance 〉=2.3mm is with adiabatic jacking block weld interval≤5 second, fully shows function admirable.

Claims

1, a kind of organic compound type is limit warm circuit breaker, is made of thermo-detective material, electric conductor, jacking block, hollow box, and thermo-detective material is an organic compound, and electric conductor is two sheet metals (lead-in wire), and jacking block and box body are produced by insulating material, it is characterized in that:

A, box body are cuboid, are made up of lid (5) and box (1), and jacking block has two road embeded slots, and an end of sheet metal (4) is bent into the right angle;

One end of b, box body is placed thermo-detective material (2) and jacking block (3), two embeded slots (10) that are its right angle end embedding jacking block of sheet metal (4) of X type contact, and the notch (7) of other end built-in box body sidewall also passes sidewall.

2, limit temperature circuit breaker according to claim 1 is characterized in that jacking block (3) and sheet metal (4) can adopt the embedding technology mutually of plastics and sheet metal to make a single piece.

3, limit temperature circuit breaker according to claim 1 is characterized in that the bottom of box side wall notch (7) also has a small boss (8), and sheet metal (4) position correspondingly has recess (9), can be chimeric mutually.

4, limit temperature circuit breaker according to claim 1 is characterized in that a distolateral wall of box body placement thermo-detective material (2) is inlaid with the collector metal plate (6) that has installing hole.

5, limit temperature circuit breaker according to claim 1 is characterized in that two sheet metals (4) stretch out the outer part of box (1) and are bent into a rectangular contacts, is a kind of limit temperature circuit breaker of contact-type.

6,, it is characterized in that assembling overall work after finishing and soak and be surrounded by one deck high-temperature insulating paint according to claim 1 or 2 or 3 or 4 or 5 described limit temperature circuit breakers.