CN218004508U

CN218004508U - Metal oxide film resistor

Info

Publication number: CN218004508U
Application number: CN202221860465.0U
Authority: CN
Inventors: 李仕驰
Original assignee: Huaying Jingda Electronic Technology Co ltd
Current assignee: Huaying Jingda Electronic Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-12-09
Anticipated expiration: 2032-07-19

Abstract

The utility model provides a metal oxide film resistor. The novel porcelain insulator comprises an outer shell, the both sides of shell set up the connection cap, the inside of shell is provided with porcelain core, porcelain core's both ends are provided with the iron cap, porcelain core's surface is provided with the metallic film, and the surface of metallic film is provided with the oxide film, be provided with the draw-in groove on the porcelain core, and porcelain core's surface joint has the snap ring corresponding with the draw-in groove, the surface of snap ring is provided with the fin, and the fin runs through the shell and extend to the outside of shell, the fixed block of the inner wall of snap ring, and the fixed block is insulating material. The utility model provides a metal oxide film resistor, through fixed block and snap ring with the heat conduction on the fin, the outside fin part that is located the shell dispels the heat fast, it is poor to have solved current metal oxide film resistor heat dispersion, leads to the heat accumulation to make the inside high temperature of resistor, takes place the spontaneous combustion, has the problem of certain potential safety hazard.

Description

Metal oxide film resistor

Technical Field

The utility model relates to a resistor field especially relates to a metal oxide film resistor.

Background

The main physical characteristic of the resistor is that the electric energy is changed into heat energy, and the resistor can also be called an energy consumption element, the current generates internal energy through the energy consumption element, the resistor usually has the functions of voltage division and shunt in a circuit, and for signals, alternating current and direct current signals can pass through the resistor;

the metal oxide film resistor is formed by decomposing and accumulating metal salt solution (such as stannic chloride and antimony trichloride) capable of being hydrolyzed on the surface of glowing glass or ceramic, so that the metal oxide film sealing material is special, the high temperature resistance is high, but the heat conducting property of the glass or ceramic material is poor, the heat dissipation performance inside the metal oxide film resistor is poor, the heat accumulation causes the internal temperature of the resistor to be overhigh, spontaneous combustion occurs, the resistor is damaged, and certain potential safety hazard exists.

Therefore, it is necessary to provide a metal oxide film resistor to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a metal oxide film resistor has solved metal oxide film resistor ground heat dispersion poor, leads to the heat accumulation to make the inside high temperature of resistor, takes place the spontaneous combustion, damages resistance, has the problem of certain potential safety hazard.

In order to solve the technical problem, the utility model provides a metal oxide film resistor, which comprises a shell, wherein connecting caps are arranged at two sides of the shell, a porcelain core is arranged inside the shell, and iron caps are arranged at two ends of the porcelain core;

the surface of porcelain core is provided with the metallic film, and the surface of metallic film is provided with the oxide film, be provided with the draw-in groove on the porcelain core, and the surperficial joint of porcelain core has the snap ring corresponding with the draw-in groove, the surface of snap ring is provided with the fin, and the fin runs through the shell and extends to the outside of shell.

Preferably, the inner wall of the clamping ring is used for fixing the fixing block, and the fixing block is made of insulating materials.

Preferably, the clamping ring and the radiating fin are made of copper materials.

Preferably, a pin is arranged on the iron cap, and one end of the pin penetrates through the shell and extends to the outside of the shell.

Preferably, a silica gel coating is arranged between the outer shell and the oxide film.

Preferably, the metal film and the oxide film are positioned between the clamping groove and the clamping ring.

Compared with the prior art, the utility model provides a metal oxide film resistor has following beneficial effect:

the utility model provides a metal oxide film resistor carries out insulation protection to the metal film through the oxide film, and the metal film is electrically conducted and is generated heat, through fixed block and snap ring with heat conduction radiating fin on, is located the outside fin part of shell and dispels the heat fast, has solved metal oxide film resistor heat dispersion poor, leads to the heat accumulation to make the inside high temperature of resistor, takes place the spontaneous combustion, damages resistance, has the problem of certain potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a metal oxide film resistor according to the present invention;

FIG. 2 is a cross-sectional view of the holding tank of FIG. 1;

fig. 3 is a side view of the snap ring of fig. 1.

Reference numbers in the figures: 1. the novel LED lamp comprises a shell, 2 parts of a connecting cap, 3 parts of a porcelain core, 4 parts of an iron cap, 5 parts of an oxidation film, 6 parts of a clamping groove, 7 parts of a clamping ring, 8 parts of a radiating fin, 9 parts of a fixing block, 10 parts of pins, 11 parts of silica gel coating, 16 parts of a metal film.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1-3, a metal oxide film resistor includes a housing 1, wherein two sides of the housing 1 are provided with connecting caps 2, the housing 1 and the connecting caps 2 are made of insulating materials, a ceramic core 3 is disposed inside the housing 1, and two ends of the ceramic core 3 are provided with iron caps 4;

as shown in fig. 2, a metal film 16 is disposed on the surface of the porcelain core 3, an oxide film 5 is disposed on the surface of the metal film 16, the oxide film 5 performs insulation protection on the metal film 16, a clamping groove 6 is disposed on the porcelain core 3, a clamping ring 7 corresponding to the clamping groove 6 is clamped on the surface of the porcelain core 3, a heat sink 8 is disposed on the surface of the clamping ring 7, and the heat sink 8 penetrates through the housing 1 and extends to the outside of the housing 1;

the inner wall of the snap ring 7 of the utility model is fixed with a fixing block 9, the fixing block 9 is made of insulating material, and the snap ring 7 and the radiating fin 8 are made of copper material;

the utility model discloses be provided with pin 10 on the iron hat 4, and the one end of pin 10 runs through shell 1 and extends to the outside of shell 1, is provided with silica gel coating 11 between shell 1 and the oxide film 5, plays insulating fire-retardant effect, and metal film 16 and oxide film 5 are located between draw-in groove 6 and snap ring 7, and fixed block 9 and snap ring 7 contact 5 oxide films.

The utility model provides a metal oxide film resistor's theory of operation as follows: cross pin 10 connecting circuit, it is electrically conductive through metal film 16, oxidation film 5 carries out insulation protection to metal film 16 simultaneously, and metal film 16 is electrically conductive to generate heat, through fixed block 9 and snap ring 7 with heat conduction fin 8 on, be located the outside fin 8 part of shell 1 and dispel the heat fast, be provided with silica gel coating 11 between shell 1 and the oxidation film 5 and carry out fire-retardant, play the effect of protection.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A metal oxide film resistor is characterized by comprising a shell (1), wherein connecting caps (2) are arranged on two sides of the shell (1), a ceramic core (3) is arranged inside the shell (1), and iron caps (4) are arranged at two ends of the ceramic core (3);

the surface of porcelain core (3) is provided with metallic film (16), and the surface of metallic film (16) is provided with oxidation film (5), be provided with draw-in groove (6) on porcelain core (3), and the surface joint of porcelain core (3) has snap ring (7) corresponding with draw-in groove (6), the surface of snap ring (7) is provided with fin (8), and fin (8) run through shell (1) and extend to the outside of shell (1).

2. A metal oxide film resistor according to claim 1, characterized in that the inner wall of the collar (7) fixes the fixing block (9), and the fixing block (9) is an insulating material.

3. A metal oxide film resistor according to claim 1, wherein the collar (7) and the heat sink (8) are both made of copper.

4. A metal oxide film resistor according to claim 1, wherein the iron cap (4) is provided with a pin (10), and one end of the pin (10) penetrates the housing (1) and extends to the outside of the housing (1).

5. A metal oxide film resistor according to claim 1, characterized in that a silica gel coating (11) is arranged between the housing (1) and the oxide film (5).

6. A metal oxide film resistor according to claim 1, characterized in that the metal film (16) and the oxide film (5) are located between the clamping groove (6) and the clamping ring (7).