JPS5917268Y2 - scissors - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of scissors, and its purpose is to attach a pair of iron pieces that are pivotally attached to each other so that they are in contact with each other near the pivoting part on the inner surface of the operation part side. By forming intersecting protrusions, the scissors can be opened and closed with the cutting edges always in close contact with each other, and the light contact pressure at the contact points formed between these protrusions allows for smooth movement. In addition, the contact area between the protrusions should be located on the line connecting the shaft attachment part of both iron pieces and the joint between the blade parts, so that there is no risk of inconveniences such as twisting of both iron pieces when using scissors. Our goal is to provide scissors that do not require

An embodiment embodying this invention will be described below with reference to the drawings. Reference numerals 1 and 2 are a pair of iron pieces consisting of a blade part 3 and an operating part 4 connected to this blade part 3, and a hole is formed approximately in the center of the iron pieces. A support shaft 7 is inserted into the shaft holes 5 and 6, and they are rotatably connected to each other.

Reference numerals 8 and 9 are narrow band-shaped protrusions formed near the shaft attachment part 10 on the inner surface of the scissors pieces 1 and 2 on the operating part 4 side, respectively, and which are the longitudinal center lines 11 and 9 of the scissors pieces 1 and 2, respectively. 12 and are inclined in opposite directions at the same angle and extend over the entire width of the scissor pieces 1 and 2.

Further, the protrusions 8 and 9 are formed when the scissors pieces 1 and 2 are processed.
The back surfaces of the scissors pieces 1 and 2 are formed by surface grinding the entire surface except for the part 9, and the tops thereof are flat as shown in FIG.

Then, in the assembled state of both scissor pieces 1 and 2, the protrusion 8
, 9 intersect in an X-shape in contact with each other at their flat portions 13 and 14, forming a small area contact portion 15 at the intersection point, and the blade portions 3 of both scissor pieces 1 and 2. The joint 16 between the blade parts 3 is always biased in the direction of pressure contact.
A gap 17 is formed between the two scissor pieces 1 and 2 extending from the protrusions 8 and 9 to the contact portions 15 of the protrusions 8 and 9.

Therefore, when using these scissors to cut cloth, paper, etc., the blades 3 of both scissor pieces 1 and 2 come into contact with the protrusions 8 and 9.
Since the scissors are always biased in the pressure direction, there is no fear that cloth, paper, etc. will get stuck between the blade portions 3 of the scissors 1 and 2, and cutting operations can be easily performed.

In addition, in the scissors of the second embodiment, since the pair of protrusions 8 and 9 are formed to have the same shape and the same inclination angle, there is a gap between the protrusions 8 and 9 as shown in FIG. The contact portion 15 is located on a line connecting the shaft attachment portion 10 of both scissors pieces 1 and 2 and the joint portion 16 between the blade portion 3, and as the scissors pieces 1 and 2 are opened and closed, the line is moved above.

Therefore, when the scissors are used, there is no risk of inconveniences such as twisting between the two scissor pieces 1 and 2.

As described in detail above, this invention allows the shafts 7 to beat each other.
Protrusions 8 and 9 intersect in contact with each other near the shaft attachment part 10 on the inner surface of the operating part 4 side of the pair of scissors pieces 1 and 2 to be attached.
, and the contact portion 15 between the protruding strips 8 and 9 is connected to both scissor pieces 1 and 2.
Since it is located on the line connecting the shaft attachment part 10 and the joint part 16 between the blade parts 3, the scissors pieces 1,
A gap 17 is formed between the inner surfaces of the scissors pieces 1 and 2.
The blade portion 3 of the scissor pieces 1 and 2 is always urged in the pressure contact direction, and the entire length of the blade portion 3 of the scissor pieces 1 and 2 can be used to easily perform cutting work with stable sharpness. The frictional force of the scissors is suppressed to the minimum, smooth opening and closing operations can be performed with a lighter contact pressure, and there is no possibility of inconveniences such as twisting of the scissor pieces 1 and 2 when the scissors are used.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the scissors of this invention, Fig. 2 is a partially cutaway part showing the scissors in a closed state, Figs. 3 and 4 are partially cutaway plan views showing the inner side of the iron piece, and Figs. FIG. 5 is a sectional view taken along the line XX in FIGS. 3 and 4, and FIG. 6 is a diagram showing the movement of the protrusions when the scissors are opened and closed.

Claims (1)

[Scope of utility model registration request] Protrusions 8 and 9 that cross each other in contact with each other are formed near the shaft attachment part 10 on the inner surface of the operating part 4 side of the pair of scissors pieces 1 and 2 which are attached to the shaft 7 so as to be able to beat each other. A pair of scissors characterized in that a contact portion 15 between the two scissors pieces 1 and 2 is located on a line connecting the shaft attachment portion 10 of both scissor pieces 1 and 2 and the joint portion 16 between the blade portion 3.