JPH0260681A - Scissors - Google Patents

Abstract

PURPOSE:To prevent that the function of the title scissors is damaged even when a screw loosens to some extent, to minimize the degree of fatigue, and to manufacture both scissors for a right-handed person and scissors for a left-handed person with one die by positioning a contact point on a contact member having excellent resiliency and easily displacing the contact point in a direction vertical to the surface of the scissors according to the opening and closing of the scissors. CONSTITUTION:A contact point member 6 is a metallic piece, the tip part of the member 6 is raised, bent in an L-shape, passed through a hole part 7 drilled in one scissor, and protruded to the inner surface of one scissor 3, and the tip of the tip part becomes a contact point 5. A round hole 8 is drilled in the middle of this metallic piece, and a shaft screw 9 fixed to the scissor is passed through the round hole 8 and protruded to the outer surface of the metallic piece. A nut 10 is screwed on the shaft screw 9, and the protruding quantity of the inner surface of the contact point 5 is adjusted by the nut 10. Since the metallic piece has a plate spring structure and excellent resiliency, the contact point 5 is supported by this metallic piece and resiliently displaced with small force. Since the contact point 5 contacts on the inner surface of the other scissor 3 and presses the scissor 3, as the reaction of this, pressure contact force acts on the intersection of edge ends 11 and 11 of edge parts 2 and 2 positioned forward from a hinge shaft 4.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to improvements in scissors such as barber scissors and office scissors.

(Prior art) Scissors cut objects by grinding two opposing blades together. The two opposing blades are connected by a screw at the fulcrum,
The disadvantage of screws is that they loosen slightly during use. If the screw is loosened, the gap J between the two blades will become larger, making it difficult to grind the blades together and making it impossible to cut.For this reason, the user should adjust the blades with their fingers so that the blades are in pressure contact. Therefore, various inventions and ideas have been made to prevent screws from loosening, but all of them have complicated structures.

In addition, the scissors have a contact point and apply pressure to the intersection of the two blade edges. In other words, the contact point creates a gap between the two blade bodies behind the pivot, and the reaction force applies pressure to the intersection of the two blade edges, thereby preventing the two blades from being twisted apart during cutting. The structure is as follows.

Many inventions and ideas have been disclosed to improve the sharpness of the scissors by increasing the pressure applied by this contact point, but this increases the frictional resistance between the two blades and reduces the number of cuts per day to several thousand. For hairdressers who do more than 10,000 hair removal sessions, the level of fatigue is extremely high.

Furthermore, in the case of ordinary hairdressing scissors, the scissor blade with the finger hole on the upper side is on the front side, and the scissor blade with the finger hole on the lower side where the thumb goes in is located on the opposite side. This positional relationship of the scissor blades allows the natural action of the fingertips to apply pressure to the intersection of the blade edges. However, when these scissors are used by a left-handed person, the positions of the scissor blades are reversed, and the natural action of the fingertips is to separate the two edges at the intersection of the edges. Therefore, right-handed scissors could not be used by left-handed people and had to be manufactured using a separate mold, making left-handed scissors expensive.

(Problems to be Solved by the Invention) The present invention eliminates the drawbacks of conventional products, and does not impair the function of the scissors even if the screws become somewhat loose, and by reducing the frictional resistance of the contact point, even if the scissors are used frequently. To provide scissors that have a low fatigue level and can be manufactured at a low manufacturing cost by manufacturing right-handed and left-handed scissors with one mold.

(Means for Solving the Problems) The configuration of the present invention will be described with reference to the drawings showing examples.

Reference numerals 3 and 3 indicate scissor blades constituting the scissors, and the blade portion 2 is connected to the front of the handle 1, and is rotatably mounted on a pivot 4. Figures 1 and 2 show the first embodiment, in which the contact member 6 is a metal piece, the tip of which rises and bends into an L shape, passing through a hole 7 drilled in the scissor blade. Then, the inner surface of the scissor blade 3 protrudes, and its tip becomes the contact point 5. A round hole 8 is bored in the middle of this metal piece, and a shaft screw 9 fixed to the scissors passes through the round hole 8 and projects to the outer surface of the metal piece.

A nut 1.0 is screwed onto the shaft screw 9, and by tightening or loosening the nut 10, the elastic force supporting the contact point 5 can be adjusted. Since the metal piece is thin and highly elastic, the contact point 5 is supported by this metal piece and can be elastically displaced with a small amount of force. Since the contact point 5 hits the inner surface of the other scissor blade 3 and pushes it, as a reaction, the blade edges 11, 11 of the blade part 2 located in front of the pivot 4
A pressure force will be applied to the intersection of the two.

3 to 5 show a second embodiment, in which an elastic plate with extremely high elasticity is attached to one of the scissor blades as a contact member 6. Urethane or silicone rubber is used as the material for this elastic plate. The surface of this plate-shaped contact member 6 becomes the contact point 5.

In both of the above two embodiments, the contact point 5 extends in a direction perpendicular to the scissor blades and forms an inclined surface with different heights on the left and right sides, so that as the two scissor blades 3 are closed, the intersection point of the blade edges It is preferable to increase the pressure contact force. In the first embodiment, the contact point 5 can be ground to form an inclined surface. In the second embodiment, the surface of the plate-shaped contact member 6 is made into an inclined surface in advance, and the contact member 6 is pasted on the back surface of the scissor blade 3, or the contact member 6 of the scissors blade 3 is pasted. The contact point 5 can be made into an inclined surface by making the surface an inclined surface and attaching the plate-shaped contact point member 6 thereto.

(Operations/Effects) The present invention has the above configuration, and since the contact member 6 in which the contact points 5 are present has a highly elastic property that can be deformed by a small force, there is little frictional resistance and the scissor blades 3° 3 Easy to open and close, 1
Even when cutting more than 10,000 times a day, fatigue can be reduced. In addition, even if the screws loosen to some extent, the contact members 6 are highly elastic, so the contact members 6 can absorb the loosening of the screws, thereby suppressing rattling of the scissors.

Furthermore, even if a left-handed person uses scissors made for right-handed people, the elasticity of the contact member 6 causes the blade edges 11, 11 to
Since a reliable pressure force is applied to the intersection of the two blades, there is no risk of the two blades coming apart and becoming twisted during use.

[Brief explanation of the drawing]

Fig. 1 is a front view of the first embodiment, Fig. 2 is a sectional view of the scissor blade, Fig. 3 is a front view of the second embodiment, Fig. 4 is an inner view of the scissor blade, and Fig. 5. is a sectional view taken along line A-A.・・・Plate, blade, scissors, touch point, touch point member

Claims (1)

[Claims] The two scissors 3, 3 with the blade 2 connected to the front of the handle 1 are connected to the pivot 4.
A contact point 5 is provided on one of the scissor blades to create a gap between the two scissor blades slightly behind the axis 4, and the contact point 5 can be deformed by a small force. The scissor blades 3 are present in the highly elastic contact member 6, and the scissors 3 during use.
, 3, the contact point 5 can be easily displaced in a direction perpendicular to the surface of the scissor blade 3, that is, in the axial direction of the pivot shaft 4.