JPS5818835Y2 - scissors - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to scissors mainly used for paper cutting and the like.

Conventionally, the blades of scissors are generally opened and closed by operating the handle, but since the handle and the blade are integrally formed, children who are unaccustomed to operating scissors may inadvertently drop their fingers or clothes between the blades. This was extremely dangerous as there was a risk of cutting fingers or damaging clothing.

The present invention was devised to improve these drawbacks, and aims to provide scissors that can be used safely even by children.

The structure of the present invention will be explained in detail with reference to the embodiment shown in the drawings. Reference numerals 1a and 1b are handles made of synthetic resin, and finger insertion holes 2a and 2b are formed at the tips thereof, respectively, and finger insertion holes 2a and 2b are formed at the base ends. is provided with pivot parts 3a and 3b which are disc-shaped and whose thickness is half the thickness of the handle;
Approximately U-shaped concave surfaces 4 a , 4 b are formed on the inner surfaces of the pivot parts 3 a , 3 b , and a through hole 5 a is formed in the center thereof.
, 5b are provided.

6 a and 6 b are blade pieces made of metal, and the negative side has blade parts 7 a and 7 b, and the other side has ridges 8 a and 8 b.
and has through holes 10a in its bases 9a, 9b,
10 b, the base parts 9 a and 9 b are fitted into the recessed surfaces 4 a and 4 b, respectively, and the blade pieces 6 a and 6 b are overlapped so that they are in contact with each other to form the through holes 5 a and 5 b. Then, pins 11 are inserted into the through holes 10a and 10b, and the pins 11 are crimped to pivotally connect both handles la and lb.

Further, on the concave surface 4a of the pivot portion 3a of one handle 1a, there is a stepped portion 12 on the side periphery of the peak 8a of the blade piece 6a that fits therein.
is formed on the inclined surface 13.

Note that the other handle 16 may also be formed in the same way, so that when the handles 1a and 1b are opened and closed, paper, etc., which has a relatively small resistance force, will be struck by its blade 6.
The blade portions 7 a and 7 b of a and 6 b can reliably cut.

Furthermore, during this operation, the chain was held still and the fingers etc.
When inserted between the blade pieces 6a and 6b, a large resistance force acts on the blade pieces 6a and 6b.
2 is not fully locked, and the peak part 8a of the blade moves up its slope 13, and the blade 6a acts to push open the pivot parts 3a and 3b of both handles la and lb against their elasticity. ,
Finally, the handles 1a and lb are separated from the concave portion 4a.
Even if the closing operation continues, the double-edged pieces 6a and 6b will stop without closing, and your fingers will not be cut.

Then, when the handles la and lb are opened in the opposite direction again, the blade piece 6a is fitted into the recessed surface 4a again due to the rotation of the pivot parts 3a and 3b, and the handle la and the blade piece 6a are in a state where they operate as one unit. to return to.

As described above, the present invention can operate easily and smoothly in the same way as in the prior art when cutting objects such as paper that have a low resistance force.

In addition, when a foreign object with high resistance such as fingers or clothing is inserted, the blade will surely stop to prevent damage or breakage, and when the foreign object is removed, the scissors will automatically go into operation. It is possible to provide scissors with a simple structure and excellent returnability.

[Brief explanation of the drawing]

Figure 1 is a front view of the present invention, Figure 2 is an exploded slope view,
FIG. 3 is a vertical sectional side view of the main part, and FIG. 4 is a diagram showing the operating state of the main part. la, lb...handle, 3a, 3b...
... Pivot joint, 4a, 4b... Concave surface, 6 a
, 6 b...Blade piece, 12...Step part, 1
3... Slope surface.

Claims (1)

[Scope of utility model registration request] The bases of the blades are fitted into the concave surfaces formed on the inner surface of the pivot joints at the base ends of both handles, and rotated by a pin so that the blades are in contact with each other and the pivot joints of both handles are elastically overlapped. A pair of scissors which can be freely pivoted and in which a stepped portion of a ridge-fitting portion of a blade on a concave surface of a pivoting part of at least one handle is formed into an inclined surface with which the blade can be engaged and disengaged.