Child-resistant lighter

Abstract

A child-resistant lighter includes a main body, a wheel racket, a file wheel, a metal cap, and a lever is disclosed. The lever having an upward slant angle of α is within the range 10°≦α≦20° further includes a pressing part, a base, and a slipping hole. Both sides of the base furnish a salient part for acting as the pivot point of the lever, and the salient part is fitted into a securing hole provided at the bottom portion of the file wheel. The securing holes are used as the pivotal bearing seat for bearing the salient part. The pressing part having a slant surface forms an angle θ with respect to the lever and has a horizontal downward slant angle(θ-α). When it comes to use, the user exerts a force P by pressing on the slant surface of the pressing part and the file wheel with his / her thumb making the lighter generate flames. The effective force acting on the lever is P cos θ where the effective range of θ is 27°≦θ≦60°, thereby the range of the effective force is 0.5P≦P cos θ≦0.9P. Therefore, the child-resistant lighter of the invention is capable of preventing the children from carelessness or accidental igniting, thereby improving the safety efficacy of the child-resistant lighter. As a result, the lighter of the invention is capable of protecting the children from causing fire accident to achieve the efficacy of safety usage of the lighter. In this way, the lighter of the invention is capable of improving the efficacy of safety usage. Nevertheless, the exerting force P is still within the range of an adult user.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a children-resistant lighter, and more particularly, to a children-resistant lighter that makes use of the exerting force on the slant pressing part at an end of the lever of the lighter to make the effective force exerting on the lever diminish for protecting the children from easily playing around the lighter to cause fire accident for achieving the efficacy of safety usage.[0003]2. Description of the Prior Art[0004]The simple-type lighter provides consumers with conveniency and low cost, and claims to be a great breakthrough in the contemporary era ever since the first use of fire in material civilization of human history. However, the lighter brings forth concerns on safety consideration. Particularly, the child playing with the lighter may result in fire accident. According to an old saying, a tiny spark may spread to become a prairie fire. Therefore, it cannot be too careful to use the lig...

AI Technical Summary

Benefits of technology

[0009]In light of the above-mentioned demerits of the prior art, the invention provides a children-resistant lighter that aims to ameliorate at least some of the demerits of the prior art or to provide a useful alternative.

[0010]The primary objective of the invention is to provide a children-resistant lighter that makes use of the slant pressing part of the lever making the effective exerting force of his / her thumb of the user acting on the lighter diminish, and in the meantime, preventing the children from causing fire accident when they play around the lighter. However, the exerting force is still within the force capability of an adult and the upward slant angle α of the lever is 10°≦α≦20°. If the upward slant angle of the pressing part is θ, the downward slant angle will be θ-α. The range of θ is 27°≦θ≦60°, thus the effective exerting force P perpendicular to the slant surface is reduced to P cos θ making the range of the effective exerting force be between 0.5P and 0.9P that is capable of protecting the children from causing fire accident to achieve the efficacy of safety usage of the lighter. This will make the user harder to exert force to ignite the lighter but the exerting force required is still within the capability of the user while makes the children harder to cause fire accident.

[0014]In order to achieve the above-mentioned objectives, the invention provides a child-resistant lighter that includes a main body, a wheel racket, a file wheel, a metal cap, and a lever. The lever having an upward inline angle of α with 10°≦α≦20° further includes a pressing part, a base, and a slipping hole. Both sides of the base furnish a salient part for acting as the pivot point of the lever, and the salient part is fitted into a securing hole provided at the bottom portion of the file wheel. The securing holes are used as the pivotal bearing seat for bearing the salient part. The pressing part having a slant surface forms an angle θ with respect to the lever and has a horizontal downward slant angle(θ-α). When it comes to use, the user exerts a force P by pressing on the slant surface of the pressing part and the file wheel with his / her thumb making the lighter generate flames. The effective force acting on the lever is P cos θ where the effective range of θ is 27°≦θ≦60°, thereby the range of the effective force is 0.5P≦P cos θ≦0.9P. Therefore, the child-resistant lighter of the invention is capable of preventing the children from careless or accidental igniting, thereby improving the safety efficacy of the child-resistant lighter. As a result, the lighter of the invention is capable of protecting the children from causing fire accident to achieve the efficacy of safety usage of the lighter. In this way, the lighter of the invention is capable of improving the efficacy of safety usage. Nevertheless, the exerting force P is still within the range of an adult user.

Problems solved by technology

This will make the user harder to exert force to ignite the lighter but the exerting force required is still within the capability of the user while makes the children harder to cause fire accident.

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