| 摘要 |
A lever-type safety lighter includes a main body, a wheel racket, a file wheel, a metal cap, and a lever. The main body being a hollow body for containing liquid gas has a sealing part securing at the top thereof. The sealing part includes a nozzle having a neck part. The wheel racket being slipped on the top of the corresponding sealing part has a securing seat furnished at the center thereof for containing a flint, and has two file-wheel seats furnished by extending thereon up at opposite sides. Moreover, a securing hole is provided near the top end of each of the file-wheel seats. What is more, a plurality of row teeth is provided in axial direction at the circumference thereof for the user to file the file wheel. The metal cap is used to cap on the sealing part. The lever further includes a base, a slipping hole, and a pressing part. The lever can have various pivot point structures including a flange, a partitioning-wall, a standing-post, and a salient part. The arm S1 of the exerting force is smaller than the arm S2 of the resisting force, thereby the mechanical advantage is smaller than one, that is the exerting force P is greater than resisting force Q. Therefore, the lever is not a force economical but a force wasting one. Nevertheless, the exerting force for pressing the leveran d filing the filing wheel is still within the range of the manipulative force of the user. The ratio of mechanical advantage is in the range of 0.3 ~ 0.8. Consequently, the lever-type safety lighter of the invention is capable of achieving the efficacy of product safety. |
