JPS59183784A - Scissors - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to scissors.

Scissors are based on the principle of levers, and are designed to cut objects by combining two opposing blades.
You must apply a strong force to your point of emphasis.

In particular, in the case of hairdressing scissors, the number of opening and closing movements of the movable blade is large, so the degree of fatigue of the thumb is large.

The purpose of this invention is to eliminate the above-mentioned drawbacks by sliding the remaining blade relative to the other blade when cutting with scissors.

This invention provides scissors with an intermediate fulcrum type in which the fulcrum of the lever is placed between the point of force and the point of emphasis, in which the fulcrum is moved while rolling an elliptical shaft fixed to one of the blades, and one of the blades is moved when cutting with scissors. To provide scissors which reduce the amount of brute force by applying force to a point of force while sliding against one of the remaining blades.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, S is an intermediate fulcrum type scissor where the fulcrum of the lever is between the point of effort and the weight.

On the back side of one scissor blade 1 of the scissors S, there is an elliptical support shaft 2.
is fixed.

The above-mentioned support shaft 2 is attached so that the long sleeve of the ellipse and the blade edge intersect.

In addition, the remaining scissor blade 1' is provided with a long hole 3 into which the support shaft 2 is fitted, such that a parallel straight edge that contacts the circumferential surfaces of both sides sandwiching the long axis of the support shaft 2 is parallel to the blade edge. ing.

Furthermore, a retaining portion 4 for the support shaft 2 is provided at the tip of the support shaft 2.

In the illustrated case, the elongated hole 3 is connected inwardly from the back surface of the scissor blade 1' to a part of the periphery of the circular recessed part 5 into which the collar forming the part 4 is fitted. A U-shaped recess 6 is provided in the direction of the cutting edge of the scissors 1', and a groove 7 is provided at the periphery of the recess 6 into which the periphery of the collar is fitted from the recess 5 to form a fulcrum on the surface of the scissors. Although not exposed, the support shaft may be inserted into the elongated hole passing through the support shaft, and the nut 1 may be screwed into the support shaft.

Note that although the scissors S are used for hairdressing in the illustrated case, they may be used for other purposes.

In the figure, reference numeral 8 denotes a plug that is fitted into the recessed portion 5, and this plug 8 is made of an elastic material such as rubber to prevent it from falling off.

The scissors according to the present invention has the above-mentioned configuration, and next, one of the scissors S has a movable blade, and the remaining one, 1', has a static blade.''The operation of the star beauty scissors will be explained. .

When both drinking ways 1, 1r are closed, the peripheral surfaces of both ends of the long axis of the support shaft 2 come into contact with the parallel straight edges of the elongated hole 3, as shown in FIG. 72, and the drinking ways 1, 1' The edges of the blades match.

Next, when one scissor blade is rotated in the direction of opening, the support shaft 2 rotates together with the opening direction 1, and the contact position of the outer peripheral surface of the support shaft 2 with the 5 parallel straight lines of the long hole 3 changes. As the axis 2 shifts from the long axis to the short axis, slide the drinking method 1 towards the hand side.

When the rotation angle of drinking method 1 becomes 30 degrees as shown in the chopsticks diagram, the movement amount α' of the drinking method 1 becomes / - The displacement amount a of the scissors blade 1 is greater than the movement amount a of the scissors blade 1 when the angle of movement of the first river in the drinking method 1 becomes O θ0 as shown in the first tide map. Movement amount a
'' is larger than the movement amount a' in the figure.

When the scissor blade 1 is turned one turn in the closing direction, the scissors blade 1 is slid in the direction of the cutting edge.

As described above, according to the scissors of the present invention, when the drinking method is rotated in the opening direction, when the drinking method is slid toward the hand side, and when the drinking method is rotated in the closing direction, when the drinking method is rotated in the closing direction, Since the scissors blade is slid on the blade, the synergistic effect of the cutting edge and the sliding blade allows for light cutting.

In addition, since it can be cut lightly, the force applied to the point of effort can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 7 is a front view of the scissors, FIG. 2 is a front view of the scissors with one side used, FIG. 3 is a rear view of the remaining one-sided use, and the long view shows the scissors. An enlarged front view showing the hole, an excision view is a sectional view taken along the gland B-B in Figure 6, and a cross-sectional view taken along the gland C-C in Figure 6.
7 is a sectional view taken along the line D-D in the Shimagu drawing; the second figure is a rear view of the support shaft; FIG. 7 is a cross-sectional plan view of the same as above;
Fig. 70 is a side view of the same, a sectional view taken along line 1/A & -A, and Figs. 72 to 1 are partially cutaway rear views showing the slide for drinking.

Claims (1)

[Claims] For scissors with an intermediate fulcrum, where the fulcrum of the lever is between the point of force and the emphasis, the fulcrum is formed by a long hole and an oval support shaft that fits into this long hole so that one of the scissor blades slides at the 9th point of scissor cutting. Scissors that are characterized by: