Conductive structure for lamp tube and lamp holder, and flashlight

Abstract

The invention discloses a conductive structure for a lamp tube and a lamp holder. The conductive structure comprises the lamp tube and the lamp holder, wherein the lamp holder is connected with the lamp tube in screw-thread fit. The conductive structure is characterized in that the structure comprises a tower-shaped spring, wherein the diameter of the bottom end of the tower-shaped spring is larger than the diameter of the top end of the tower-shaped spring; the lamp tube comprises a connecting piece, wherein an inner cavity of the connecting piece is conical, and the diameter of an external port of the inner cavity of the connecting piece is larger than the diameter of an internal port of the inner cavity of the connecting piece; and the head end of the tower-shaped spring is fixed inside the lamp holder, and the bottom end of the tower-shaped spring is contacted with the sidewall of the inner cavity of the connecting piece of the lamp tube. Because the spring of the conductive structure is tower-shaped, and the large end of the tower-shaped spring is contacted with the inner cavity of the connecting piece of the conical lamp tube, the friction force of the conductive structure is enlarged compared with that of the normal contacting mode, and further, the electric conductivity is improved. The invention also discloses a flashlight with the conductive structure.

Description

technical field [0001] The invention relates to a conductive structure and a torch using the conductive structure, in particular to a conductive structure used between a lamp body and a lamp cap of a lamp or torch and a torch using the conductive structure. Background technique [0002] Existing flashlights or similar lamps use various methods to realize the conduction of the internal circuit; among them, in the way of using the lamp body tube and the lamp cap to cooperate with the conduction, most of them are provided with conductive parts in the lamp cap. Elastic parts, and then adopt the structure that the lamp body and the elastic parts are in planar contact, and then realize the conductive function; this planar conductive structure has relatively high requirements on the size and surface accuracy of the mating surface of the lamp body and elastic parts, Therefore, the cost of the torch or similar lamps is increased, and due to the dirt, oxide layer and other insulating ...

AI Technical Summary

Problems solved by technology

[0002] Existing flashlights or similar lamps use various methods to realize the conduction of the internal circuit; among them, in the way of using the lamp body tube and the lamp cap to cooperate with the conduction, most of them are provided with conductive parts in the lamp cap. Elastic parts, and then adopt the structure that the lamp body and the elastic parts are in planar contact, and then realize the conductive function; this planar conductive structure has relatively high requirements on the size and surface accuracy of the mating surface of the lamp body and elastic parts, Therefore, the cost of the torch or similar lamps is increased, and due to the dirt, oxide layer and other insulating substances that are easily produced at the contact portion between the lamp body and the elastic member, the service life and the conductive and luminous performance of the torch or similar lamps will also be reduced. Effect

Images