JP2005087361A - Device for pivoting both blades of scissors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for pivoting both blades of scissors capable of corresponding to the thickness of blade bodies and easily fixing and correcting pivoting without the protrusiveness of an end of a screw. <P>SOLUTION: A through hole (1) is drilled on one edge body (B) in a pivoting position where a couple of the blade bodies (A) and (B) are joined together. An upper-side fixed shaft body (3) is mounted on the through hole (1). A male thread (4) protrusively provided on the shaft body (3) is screw-fitted to a female thread (5) formed on the other edge body (A). A male screw shaft (7) projecting in the center of a lower-side fixed shaft body (6) is screwed into a center female thread (8) of the upper-side fixed shaft body (3). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a double-edged pivoting device for barber / cosmetic scissors and other scissors.

  For a long time, a pair of blades constituting the scissors have been pivotally attached in combination with only a screw or a nut at a pivot point.

  The conventional pivotal support with one screw that supports both blades of scissors uses a screw whose length does not match, or when the thickness of the blade is reduced, the tip of the screw is more than the blade or nut. It will protrude. SUMMARY OF THE INVENTION An object of the present invention is to provide a pivoting device that can be easily fixed and corrected in accordance with the thickness of the blade body without protruding the screw tip.

  Means of the present invention are as follows.

  Two blades (A) and (B) have a pair of blades (A) and (B) at the same pivoting position, one blade (B) has an insertion hole (1), and the insertion hole (1) has an upper fixed shaft ( 3) is mounted, and the male screw (4) protruding therefrom is formed on the other blade body (A), screwed into the screw (5), and protruded into the center of the lower fixed shaft body (6). (7) is screwed into the center female screw (8) of the upper fixed shaft body (3).

  Since the blade body is clamped by two screw shaft bodies, the tip of the screw does not protrude from the blade body. Therefore, it can be done smoothly without touching or damaging the hair. In addition, even when the blade itself becomes thin when sharpening a worn blade, even when a thicker blade is pivotally attached, the screw shaft can be changed with respect to the thickness of the blade, so each It can be used as an optimum screw shaft for scissors.

  1 to 7 show the first embodiment, and FIGS. 8 and 9 show the second embodiment. In the first embodiment, A and B are blade bodies, the insertion hole 1 is made in the blade body B at the pivotal position of both the blade bodies A and B, and the upper fixed shaft body 3 is attached thereto. The male screw 4 protruding from the upper fixed shaft body 3 is formed on the other blade body A and screwed into the screw 5, and the screw shaft 7 protruding from the center of the lower fixed shaft body 6 is the center of the upper fixed shaft body 3. Screw into the screw 8.

  The blade body A is fastened to the lower fixed shaft body 6 so that the female screw 5 and the male screw 4 are more closely attached, and the blade body A and the upper fixed shaft body 3 are securely fixed. The blade body B can be rotated around the upper fixed shaft body 3 with little frictional resistance by the thrust bearing 9 interposed in the upper fixed shaft body 3 and the annular groove 13 formed in the blade body A.

  Further, the lower fixed shaft body 6 has a head portion 12 having a recessed groove 11 as shown in FIGS. 5 to 7, and the recessed groove 11 is used as a substitute for a screwdriver when tightening a screw. It has a matching groove shape and is easy to enter.

  By using a coin or the like to be inserted into the knob 10 and the recessed groove 11, a tool such as a screwdriver is not required, and the pivoting state can be easily corrected.

  When used for many years while sharpening the blades of the blades A and B from the state of FIG. 1, the blades A and B become thinner as shown in FIG. At this time, in the present invention, since the screw shaft 7 protruding to the center of the lower fixed shaft body 6 enters the center female screw 8 of the upper fixed shaft body 3, the shaft having a dimension suitable for the combined thickness of the blade bodies A and B is provided. It becomes a screw. Conventionally, when one screw was used, the tip of the screw protruded from the screw hole of the blade body or nut, but the upper fixed shaft body 3 and the lower fixed shaft body 6 are tightened so as to sandwich the blade body. The screw tips of the male screw 4 and the screw shaft 7 are always inside the blades A and B, and the screw hole is not visible from the outside, so that the screw tip does not protrude.

  Next, in the second embodiment shown in FIG. 8, the oil permeation ring 14 is fitted into the annular groove 13 formed in the pivoting portion of the blade body A so that the oil always penetrates into the insertion hole 1 from the oil permeation ring 14. As a result, it is possible to reduce the number of operations to periodically remove screws and apply oil.

The longitudinal cross-sectional view which combined the 2 blade body and gave this invention apparatus to the pivotal attachment part. The longitudinal cross-sectional view of the pivoting part when the blade body is worn out by repeated polishing of the blade. The front view of the upper side fixed shaft body screwed into a pivot part. FIG. The top view of a lower side fixed shaft body. Similarly side view. Similarly bottom view. The longitudinal cross-sectional view which shows another embodiment. The perspective view of the oil penetration ring used for the example of FIG.

Explanation of symbols

A Blade body B Blade body 1 Insertion hole 3 Upper fixed shaft body 4 Male screw 5 Female screw 6 Lower fixed shaft body 7 Screw shaft 8 Center female screw 9 Thrust bearing 10 Knob 11 Recessed groove 12 Head 13 Annular groove 14 Oil Osmotic ring

Claims (2)

  In one of the two blade bodies (B), an insertion hole (1) is formed at the pivotal position where the pair of blade bodies (A) and (B) coincide with each other, and the upper fixed shaft body ( 3) is mounted, and the male screw (4) projecting from this is screwed into the screw (5) to form the other blade body (A), and the screw shaft projects into the center of the lower fixed shaft body (6) Scissors double-blade pivoting device in which (7) is screwed into the center female screw (8) of the upper fixed shaft (3). The oil penetration ring (14) is fitted into the annular groove (13) formed in the pivot portion of the blade (A), and oil always passes through the oil penetration ring (14) without removing the screw. 2. The scissors double-edged pivoting device according to claim 1, wherein the scissors are immersed in the scissors.

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