CN202534449U - A thermal fuse cement resistance - Google Patents

Abstract

The utility model relates to a special resistance product technical field especially relates to a temperature fuse cement resistor, and it includes temperature fuse, resistance bar, thick liquids, pin and porcelain shell, the temperature fuse passes through the pin and connects resistance bar formation integral type group finished product, and this integral type group finished product passes through the thick liquids and seals in porcelain shell, can effectively compromise shock-resistant, moisture-proof, has the advantage of small, good heat dissipation, low noise, is fit for preventing the inrush current to can when unusual such as overload, give play superior cutting characteristics, improve the security performance greatly, thereby can effectively reduce the potential safety hazard, reduce the trouble, avoid endangering product and personnel's safety.

Description

A thermal fuse cement resistance

technical field

The utility model relates to the technical field of special resistance products, in particular to a temperature fuse cement resistance.

Background technique

Cement resistor is a resistor potted with refractory mud, that is, the resistance wire is wound on the non-alkaline heat-resistant porcelain, and the outside is protected by heat-resistant, moisture-resistant and corrosion-resistant materials, and the wire-wound resistor body is placed in the The square porcelain frame is filled and sealed with special non-combustible heat-resistant cement. At present, there are two types of cement resistors: ordinary cement resistors and cement wirewound resistors.

The existing cement resistor still has the problem of the cement resistor bursting during use, which poses a relatively large safety hazard, easily causes failure, and endangers the safety of products and personnel.

Contents of the invention

The purpose of the utility model is to provide a thermal fuse cement resistor for the deficiencies of the prior art, which can effectively reduce potential safety hazards, reduce failures, and avoid endangering the safety of products and personnel.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a temperature fuse cement resistor, which includes a temperature fuse, a resistance rod, a paste, pins and a porcelain shell, and the temperature fuse is connected to the resistance rod through the pins to form an integrated A component product, the one-piece component product is sealed in a porcelain shell by slurry.

The resistance rods include porcelain rods, and alloy wires or oxide rods are arranged outside the ceramic rods.

The two ends of the porcelain rod are provided with iron caps.

The iron cap is provided with welding points, and the welding points are welded to the pins.

The beneficial effects of the utility model are: a temperature fuse cement resistor described in the utility model, including a temperature fuse, a resistance rod, a slurry, pins and a porcelain shell, and the temperature fuse is connected to a resistance rod through a pin to form an integrated composition Product, the one-piece component product is sealed in the porcelain shell by slurry. The temperature fuse cement resistor with the above structure is a product that combines the temperature fuse and the resistance rod into one and encapsulates it in a porcelain case, which can effectively take into account shock resistance and humidity resistance. It has the advantages of small size, good heat dissipation and low noise, and is suitable for preventing intrusion. Current, and can exert superior cut-off characteristics in abnormal conditions such as overload, greatly improving safety performance, thereby effectively reducing safety hazards, reducing failures, and avoiding endangering the safety of products and personnel.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described: as shown in Figure 1, a kind of temperature fuse cement resistance described in the utility model, its structure is, it comprises temperature fuse 3, resistance bar, slurry 7, pin 6 and a porcelain case 8, the thermal fuse 3 is connected to a resistance rod through a pin 6 to form an integrated component, and the integrated component is sealed in the porcelain case 8 through a slurry 7. Further, the resistance rod includes a porcelain rod 1, and an alloy wire or an oxide rod 2 is arranged outside the ceramic rod 1 to form a wire-wound resistance structure. Furthermore, iron caps 4 are provided at both ends of the porcelain rod 1, and the iron caps 4 are provided with welding points 5, and the welding points 5 are welded to the pins 6, making the welding more firm and convenient.

A temperature fuse cement resistor described in the utility model, the model is SQF, when the current is overloaded, it can detect the body heating of the resistor or the abnormal heating of the outer body, so that the temperature fuse 3 is fused and the circuit is cut off. It is a product that puts the temperature fuse 3 and the resistance rod into the porcelain shell 8 and seals it with the slurry 7. It can effectively take into account shock resistance and humidity resistance. It has the advantages of small size, good heat dissipation and low noise, and is suitable for preventing inrush current. , and can exert superior cut-off characteristics in abnormal conditions such as overload, greatly improving safety performance, thereby effectively reducing safety hazards, reducing failures, and avoiding endangering the safety of products and personnel. Its temperature range is 117℃～157℃, the rated power is 1W～5W, and the rated resistance value is 1.8Ω～2.2kΩ. It can be applied to various electrical instruments and equipment, heating appliances, household appliances, lamps, televisions, copiers, Audio, etc., the role played is: 1. Make the resistor heat through the overload current, let the heat transfer to the thermal fuse 3, make the thermal fuse 3 fuse, and cut off the current; 2. The temperature around the resistor rises, allowing the heat to transfer to the temperature fuse 3 The fuse 3 fuses the thermal fuse 3 to cut off the current.

The above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope are all included in the utility model patent application scope .

Claims (4)

1. A thermal fuse cement resistor, characterized in that it includes a thermal fuse (3), a resistance rod, slurry (7), pins (6) and a porcelain case (8), and the thermal fuse (3) passes through The pins (6) are connected to the resistance rods to form an integrated component, and the integrated component is sealed in the porcelain shell (8) through the slurry (7). 2. A temperature fuse cement resistor according to claim 1, characterized in that: the resistance rod comprises a porcelain rod (1), and an alloy wire or an oxide rod (2) is arranged outside the porcelain rod (1). 3. A thermal fuse cement resistor according to claim 2, characterized in that iron caps (4) are provided at both ends of the porcelain rod (1). 4. A thermal fuse cement resistor according to claim 3, characterized in that: the iron cap (4) is provided with a welding point (5), and the welding point (5) is welded to the pin (6).

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