Patent Application
20060277764
The present invention relates to scissors, and in particular to a set of power-saving scissors, wherein a planet gear set is installed between the connection of the two handles of the scissors to achieve the object of power saving. Furthermore, in the present invention, the planet gear set is sealed within receiving space by the cover. It will not expose out and thus is not polluted.
The prior art scissors have two handles, which are pivotal installed to each other. By rotating one handle, the other handle will rotate with respect to the handle. If it is desired to cut a hard object, the user must apply a great force to the handle. There is no mechanism which can make the user apply less force to the scissors.
Accordingly, the primary object of the present invention is to provide a set of power-saving scissors, wherein a planet gear set is installed between the connection of the two handles of the scissors to achieve the object of power saving. Furthermore, in the present invention, the planet gear set is sealed within receiving space by the cover. It will not expose out and thus is not polluted.
To achieve above objects, the present invention provides a power-saving scissors which comprises a first handle having a first knife set; the first handle being formed with a receiving space; an inner wall of the receiving space being formed with teeth; a second handle pivotally installed to the first handle by a planet gear set; the second handle having a second knife set; a gear being protruded from the second handle at a position corresponding to the receiving space; the center gear being engageable with the receiving space of the first handle; the planet gear set including the center gear, at least one peripheral gear and a cover; one end of the center gear being installed to the second handle and another end thereof being protruded with a post; the at least one peripheral gear being engaged to the center gear and also engaged to the teeth of the receiving space; the cover covering upon an outer side of the receiving space so as to seal the planet set within the receiving space.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.
In order that those skilled in the art can further understand the present invention, a description will be described in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.
Referring to FIGS. 1 to 4, the power-saving scissors of the present invention is illustrated. The power-saving scissors has a scissor body 1. The scissor body 1 has the following elements.
A first handle 10 has a first knife set 11. The first handle 10 is formed with a receiving space 12. An inner wall of the receiving space 12 is formed with teeth 13.
A second handle 20 is pivotally installed to the first handle 10 by a planet gear set. The second handle 20 has a second knife set 21. In this embodiment, each of the first and second knife sets 11, 21 has three knives. When the first handle 10 and second handle 20 rotate with respect to each other, the knife set 11 and knife set 21 will perform cut operations. A gear 22 is protruded from the second handle 20 at a position corresponding to the receiving space 12. The center gear 22 is engageable with the receiving space 12 of the first handle 10.
The planet gear set includes the center gear 22, three peripheral gears 31 and a cover 32. One end of the center gear 22 is installed to the second handle 20 and another end thereof is protruded with a post 221. The three peripheral gears 31 are engaged to the center gear 22 and also engaged to the peripheral teeth of the receiving space 12. The cover 32 is installed with a buckling hole 321 for receiving the post 221 of the center gear 22.
In assembly, the cover 32 of the scissor body 1 is placed into the receiving space 12 of the first handle 10. Then the three peripheral gears are placed between the center gear 22 and the teeth of the receiving space 12. Then the cover 32 covers upon the receiving space 12 to cause that the post 221 of the center gear 22 is buckled into the buckling hole 321 of the cover 32. Thus the assembly work of the present invention is completed. After assembly, when the second handle 20 rotates, the center gear 22 also rotates to drive the peripheral gears 31 so as to drive the first handle 10. Thus, the first handle 10 and second handle 20 rotate with respect to one another to cut an object.
Referring to FIGS. 3 to 6, in use, the center gear 22 of the second handle 20 will drive the peripheral gears 31 so as to rotate the teeth 13 on the receiving space 12 of the first handle 10. The number of the teeth of the center gear 22 is far smaller than number of the teeth in the teeth 13 so as to achieve the object of power saving. Furthermore, in the present invention, the planet gear set is sealed within receiving space 12 by the cover 32. It will not expose out and thus is not polluted.
Referring to
The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
