CN207624650U - The electric discharge pipe electrode of excessive glue when can prevent from coating - Google Patents

Abstract

The utility model discloses a kind of electric discharge pipe electrode of excessive glue when preventing from coating; including external electrode and internal electrode; the cylindricality protrusion that the external electrode has a sheet type substrate and extended by substrate side; the center indent of the substrate has a heat-dissipating cavity; it is laid with cooling fin in the heat-dissipating cavity; the setting of cooling fin effectively improves heat dissipation effect, and product long-time service is protected to be hardly damaged.The internal electrode is stacked on the end face of cylindricality protrusion, the upper surface of the internal electrode is equipped with pit, the concave point for accommodating electronic powder is equably disposed in the pit, when needing electronic powder to be coated on concave point, peripheral bowl configurations can avoid powder during applying covering from overflowing completely.

Description

The electric discharge pipe electrode of excessive glue when can prevent from coating

Technical field

The utility model is related to electronic component field technology, a kind of discharge tube of excessive glue when preventing coating is referred in particular to Electrode.

Background technology

Gas-discharge tube is a kind of switching mode protection device, is used usually as overvoltage protecting device.Generally make at present Gas-discharge tube is formed by insulation tube body and its both ends sealing electrode, inner cavity filling with inert gas.When gas-discharge tube electricity When the voltage at pole both ends is more than the breakdown voltage of gas, gap discharge will be caused, the gas-discharge tube is rapidly by high-impedance state Become low resistance state, conducting is formed, to protect other devices connected in parallel.

The ceramic radiating fin of traditional gas discharge tube to radiate by being installed on discharge body body exterior, operation principle is two The electrode at end transfers heat to electric discharge tube body, then transfers heat to ceramic radiating fin by the tube body that discharges, thus will Heat sheds.However it is this heat transmit carrier it is excessive, radiating efficiency is low.

Utility model content

In view of this, the utility model is in view of the existing deficiencies of the prior art, main purpose, which is to provide one kind, to be prevented The electric discharge pipe electrode of excessive glue when coating avoids powder in electronic powder coating procedure from overflowing, and has good heat dissipation completely Performance, can be with protection discharge tube using not damaged because of overheat, to overcome the deficiencies in the prior art.

To achieve the above object, the utility model is using following technical solution：

A kind of electric discharge pipe electrode of excessive glue when preventing coating, including external electrode and internal electrode, the external electrode The cylindricality protrusion extended with a sheet type substrate and by substrate side, the center indent of the substrate have a heat-dissipating cavity, It is laid with cooling fin in the heat-dissipating cavity；The internal electrode is stacked on the end face of cylindricality protrusion, the internal electrode it is upper End face is equipped with pit, and the concave point for accommodating electronic powder is equably disposed in the pit.

As a preferred embodiment, the avris of the substrate is integrally extended with leg, and the leg is located at same with substrate Plane.

As a preferred embodiment, the junction of the substrate and cylindricality protrusion is equipped with positioning inclined-plane.

As a preferred embodiment, the side of the cylindricality protrusion, which is equipped with, is oriented to fin.

As a preferred embodiment, the outer diameter of the internal electrode is less than the outer diameter of cylindricality protrusion.

As a preferred embodiment, the internal electrode is high-melting-point cylindrical metal body, and the external electrode is caesium Close the electronic radioactive metallic object of object.

As a preferred embodiment, the internal electrode sinter molding is connected to external electrode.

The utility model has clear advantage and advantageous effect compared with prior art, specifically, by above-mentioned technology Scheme it is found that its mainly since electrode is divided into two parts, first, external electrode, second is that internal electrode, the internal electrode and External electrode uses different materials and moulding, wherein is provided with cooling fin on external electrode, effectively improves heat dissipation effect Fruit protects product long-time service to be hardly damaged, which is mainly used for launching electronics, is set on the end face of internal electrode It is equipped with pit and concave point, when needing electronic powder to be coated on concave point, powder during peripheral bowl configurations can avoid painting from covering completely Body overflows.

More clearly to illustrate the structure feature and effect of the utility model, come below in conjunction with the accompanying drawings with specific embodiment pair The utility model is described in detail.

Description of the drawings

Fig. 1 is the vertical view of the embodiment of the utility model.

Fig. 2 is the sectional view of the embodiment of the utility model.

Description of drawing identification：

10, external electrode 11, substrate

12, cylindricality protrusion 13, heat-dissipating cavity

14, cooling fin 15, leg

16, it positions inclined-plane 17, be oriented to fin

20, internal electrode 21, pit

22, concave point.

Specific implementation mode

It please refers to shown in Fig. 1 and Fig. 2, that show the concrete structures of the preferred embodiment of the utility model, are a kind of The electric discharge pipe electrode of excessive glue when can prevent from coating, including external electrode 10 and internal electrode 20.

Wherein, the external electrode 10 is by making cesium compound be dissolved in impregnation sintering in the solution of water or ethyl alcohol The refractory metals such as tantalum, niobium and the sintered body that generates produce.External electrode 10 is maintained using cesium carbonate, sulphur as a result, The electronic radioactive material of the cesium compounds such as sour caesium, cesium oxide, niobic acid caesium.

The cylindricality protrusion 12 that the external electrode 10 has a sheet type substrate 11 and extended by 11 side of substrate.It is described The center indent of substrate 11 has a heat-dissipating cavity 13, and cooling fin 14 is laid in the heat-dissipating cavity 13, and the setting of cooling fin 14 makes Heat can fast speed be transmitted to outside, mitigate thermal expansion, solve electron tube and supportted with electrode connecting position because transition is generated heat Broken problem.

The avris of the substrate 11 is integrally extended with leg 15, and the leg 15 is generally aligned in the same plane with substrate 11.By justifying Welding independent lead after the completion of shape monomer electrode and insulator encapsulation becomes the direct insertion electrode of monomer, reduces manufacturing process, improves Production efficiency, appearance beautification, this scheme saves pcb board space, evades the problems such as pulling force that former welding manner is brought is bad.

The junction of the substrate 11 and cylindricality protrusion 12 is equipped with positioning inclined-plane 16, and the positioning action on inclined-plane makes product fill With rear good appearance, the gap uniformity between insulator and electrode can be made, to effectively improve product telecommunications parameters.With And the side of the cylindricality protrusion 12 is equipped with and is oriented to fin 17, in the present embodiment, it is symmetrically arranged two to be oriented to fin 17, from And so that leg 15 is stretched out in the same direction after assembling, convenient for product is integrally welded on pcb board.

The internal electrode 20 is formed by least one refractory metal such as tungsten, molybdenum, tantalum, niobium.The internal electrode 20 is burnt Form type and be connected to external electrode 10, the outer diameter of internal electrode 20 is less than the outer diameter of cylindricality protrusion 12.By with refractory metal The most inner side in electrode entirety is arranged in internal electrode 20 processed, to which the unit area in electric discharge with 20 discharge face of internal electrode touches The amount of the ion hit will not be concentrated, and the amount of these ions can be mitigated.

The internal electrode 20 is stacked on the end face of cylindricality protrusion 12, and the upper surface of the internal electrode 20 is equipped with pit 21, the concave point 22 for accommodating electronic powder is equably disposed in the pit 21.The effect of pit 21 is suitable for liquid electronic powder Hand to coat and the coating of dispensing formula, and powder in coating procedure is avoided to overflow completely.

In conclusion the design focal point of the utility model is, mainly since electrode is divided into two parts, first, outer Portion's electrode 10, second is that internal electrode 20, the internal electrode 20 and external electrode 10 use different materials and moulding, wherein It is provided with cooling fin 14 on external electrode 10, effectively improves heat dissipation effect, protects product long-time service to be hardly damaged, this is interior Portion's electrode 20 is mainly used for launching electronics, and pit 21 and concave point 22 are provided on the end face of internal electrode 20, when needing electronic powder When coated on concave point 22, peripheral 21 structure of pit can avoid powder during applying covering from overflowing completely.

The above descriptions are merely preferred embodiments of the present invention, not makees to the technical scope of the utility model Any restrictions, therefore any trickle amendment made by the above technical examples according to the technical essence of the present invention, equivalent change Change and modify, is still within the scope of the technical solutions of the present invention.

Claims (7)

1. it is a kind of prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：Including external electrode（10）And internal electrode （20）, the external electrode is with a sheet type substrate（11）With the cylindricality protrusion extended by substrate side（12）, the base The center indent of plate has a heat-dissipating cavity（13）, cooling fin is laid in the heat-dissipating cavity（14）；The internal electrode（20）It is folded Set on cylindricality protrusion（12）End face on, the upper surface of the internal electrode is equipped with pit（21）, equably arrange in the pit It is useful for accommodating the concave point of electronic powder（22）.

2. it is according to claim 1 prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：The substrate（11） Avris be integrally extended with leg（15）, the leg is generally aligned in the same plane with substrate.

3. it is according to claim 1 prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：The substrate（11） With cylindricality protrusion（12）Junction be equipped with positioning inclined-plane（16）.

4. it is according to claim 1 prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：The cylindricality protrusion （12）Side be equipped be oriented to fin（17）.

5. it is according to claim 1 prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：The internal electrode （20）Outer diameter be less than cylindricality protrusion（12）Outer diameter.

6. it is according to claim 1 prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：The internal electrode （20）For high-melting-point cylindrical metal body, the external electrode（10）For the electronic radioactive metallic object of cesium compound.

7. it is according to claim 1 prevent coating when excessive glue electric discharge pipe electrode, it is characterised in that：The internal electrode （20）Sinter molding is connected to external electrode（10）.