JPS63212391A - Scissors having outer ring part and production thereof - 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 Field of Industrial Application This invention relates to scissors used for cutting paper, cloth, etc. In particular, the outer ring part forming the finger hole in the handle handle is connected to the handle handle. relates to separately formed scissors and a method for manufacturing the same.

Conventional technology Traditionally, scissors used for cutting paper, cloth, etc.
As shown in the figure, the grip handle 51a of the pair of scissors pieces 51 constituting the scissors 50 has a finger hole 52 for inserting the thumb and a finger hole 53 for inserting a finger other than the thumb, respectively. 51, or one in which a handle portion having a finger hole for inserting a finger as described above is formed integrally with the scissors piece from a synthetic resin.

Problems to be Solved by the Invention As mentioned above, in order to integrally form finger holes in the grip handles of the pair of scissors pieces, it is necessary to use a cutting die for making the finger holes and a die for punching out the scissors pieces. A punching die is required, which results in a large die.Furthermore, a finger rest 54 made of synthetic resin or the like is fitted over the entire inner periphery of the finger hole in order to make the finger hole fit well against the finger. Ta. On the other hand, for scissors whose handles are made of synthetic resin, a mold for molding the handles and a molding machine (for example, an injection molding machine) for pushing the synthetic resin into the mold are required. The problem was that it was necessary.

This invention was made in order to solve the above problem, and when forming a finger hole in the grip handle of the scissors piece constituting the scissors, it eliminates the need for a finger rest that covers the entire inner circumference of the finger hole. Another object of the present invention is to provide scissors that do not require a synthetic resin molding machine or a mold thereof, and have an outer ring portion that allows the shape of the finger hole to be changed more easily than conventional scissors.

Means for Solving the Problems The present invention for achieving the above object will be explained with reference to FIGS. 1 to 3 corresponding to embodiments. The scissors having an outer ring according to the first invention of this application are as follows. , a pair of scissors pieces 2, 2 having a grip handle 5 with a cross section other than circular and pivotally supported in the fulcrum hole 3, and a fitting hole 8 that fits with the grip handle at the inner end thereof, and an outer side. It consists of a pair of outer ring parts 7.7 having mounting holes 9 at their ends. When the grip handle part 5 is inserted into the fitting hole 8 of each outer ring part 7 and the tip of the grip handle part 5 is fixed to the attachment hole 9, there is a gap between the grip handle part 5 and the outer ring part 7. A finger hole lO is formed.

A second invention of this application is an invention of a method for manufacturing scissors having the outer annular portion of the first invention, in which first, when manufacturing a pair of scissors pieces 2.2 that are pivotally supported in the fulcrum hole 3, each The grip handle portions 5, 5 are formed to have a cross section other than circular. When manufacturing the pair of outer rings 7.7 that form the finger holes 10 between the respective grip handles 5 of the respective scissors pieces 2, 2, the inner ends 7a, 7a of the pair of outer rings 7.7 are prepared.
Then, fitting holes 8, 8 which fit into the grip handle parts 5, 5 are respectively opened. Then, the handle part 5 of each scissor piece 2 is inserted through the fitting hole 8 of the outer ring part 7 of the crane, and each outer ring part is opened.

4j and 7 on the outside of each grip handle 5.5, and
The outer end of the grip handle 5 is fixed to the end of the grip handle 5.

Since we decided to manufacture the outer ring part that forms the finger hole between the working scissor piece and the handle handle separately from the scissor piece, we did not need the cutting die and molding necessary to manufacture the scissor piece and the outer ring part. The mold etc. may be small. Furthermore, since polishing, plating, etc. on the outer ring can be performed independently of the scissor pieces, the inner surface can be made smooth and the attachment of a finger rest can be eliminated.

Embodiment Next, an embodiment of the present invention will be described based on the drawings.

1 to 3, the scissors 1 has a pair of scissors pieces 2.2, and both scissors pieces 2 are formed in the same shape. The scissors piece 2 has a blade portion 4 at the tip of its fulcrum hole 3, and this blade portion 4
The opposite side is a grip handle 5 having a rectangular cross section. The grip handle portion 5 is formed to have a predetermined length from its end and a slightly narrower width on both sides to form an attachment portion 6. In this way, the mounting portion 6 formed with a narrow width still has a width of b.
has a rectangular shape with a thickness greater than t, and the end portion of the mounting portion 6 on the side of the fulcrum hole 3 has step portions 5a, 5a. The distal end portion of the attachment portion 6 is a threaded portion 6b.

The outer ring part 7 attached to the mounting part 6 is made by bending a thin metal plate-like member into an arc shape, and its both ends are a substantially circular inner end 7a and outer end 7b. . The outer ring part 7 has a rectangular insertion hole 8 formed in the center of its inner end 7a, which fits into the attachment part 6 of the scissor piece 2. It is long in the direction and short in the thickness direction. On the other hand, a round hole 9 is bored in the outer end 7b of the outer ring portion 7. And this round hole 9
In this case, a fixing member 11 having a cylindrical portion 12 with a thread 12a screwed into the threaded portion 6b of the mounting portion 6 on its inner circumferential surface is inserted into the fixing member 11. Therefore, when the outer ring part 7 is placed on the outside of the attachment part 6 and the attachment part 6 is inserted into the insertion hole 8 of the outer ring part 7, the outer ring part 7 is attached to the grip handle part 5 of the scissors piece 2. Lie down right next to me. Then, the stepped portions 6b on both sides
.

6b comes into contact with the inner end 7a.
When inserted into the insertion hole 8, the screw portion 6b is positioned at the center of the insertion hole 8.

Reference numeral 13 is a cylindrical piece made of synthetic resin, and its length is such that it can be inserted between the inner and outer ends 7a and 7b of the outer ring part 7. This loss 13 has a shaft hole 13a that can be fitted into the mounting portion 6, and an outer surface thereof has a
In its longitudinal direction, arc-shaped anti-slip protrusions 13b are formed in multiple wave shapes with predetermined pinches. Reference numeral 14 denotes a rivet that pivotally supports the two scissors pieces 2, 2 in their fulcrum holes 3, 3.

Next, the attachment of the outer ring part 7 to the scissors piece 2 will be explained. The inner and outer ends 7a of the outer ring part 7.

Insert the loss reducer 13 between 7b. Next, the threaded part 6b of the attachment part 6 of the scissors piece 2 is inserted through the insertion hole 8 of the inner end 7a into this hole 8 and the shaft hole 13a of the cutout 13, and both stepped parts 6a, 6a of the attachment part 6 are inserted. It is brought into contact with the inner end 7a. Then,
The cylindrical part 1 of the fixing member 11 is inserted into the round hole 9 of the outer ring part 7 from the outside.
2, and attach this fixing member 11 to the screw part 6b of the mounting part 6.
When tightened, the outer ring portion 7 is fixed to the scissors piece 2.

After attaching the outer ring portions 7 to the opposing positions of the mounting portions 6.6 of the two scissor pieces 2.2 in the manner described above, rivet the fulcrum holes 3, 3 of both scissor pieces 2.2. 14, the scissors 1 is formed.

Note that since the fixing member 11 can be attached to and detached from the screw portion 6b of the attachment portion 6 even after the scissors 1 are formed, the outer ring portion 7 can be attached and detached from the scissors piece 2 even after the scissors 1 is formed. can.

In the above embodiment, the outer ring portion 7 has an arc shape, but the shape is not limited to the arc shape, and the scissors 1
Its shape can be changed depending on the purpose of use. In order to change the shape of the outer ring part 7, it is only necessary to change the mold for forming the outer ring part 7. Compared to the case where the shape of the part is changed, the materials and man-hours required for manufacturing the mold can be reduced. In addition, the surface of the outer ring part 7 can be polished by barrel processing or plated to make the surface smooth and to improve the appearance, so it is possible to eliminate the need for attachment to this part. Can be done.

Further, by carving various patterns on the mold of the outer ring part 7, various patterns can be formed on the outer surface of the outer ring part 7, and the appearance of the scissors can be improved.

Furthermore, in this embodiment, when attaching the outer ring part 7 to the attaching part 6 of the scissors piece 2, it is attached using the fixing member 11 having a screw hole, but the attachment is not limited to attachment using a screw. Of course.

The scissors with the outer ring part that produces no effect of the invention have the above structure, and if it becomes necessary to change the shape of the finger hole, all you need to do is change the mold for the outer ring part. In addition, polishing and surface treatment of the outer ring part can be performed separately from the scissors pieces, and by improving the feel of the outer ring part than before, there is no need to attach a finger rest to the outer ring part. can do. In addition, this manufacturing method can significantly reduce the amount of manufacturing equipment, etc., compared to a method in which the handle portion of the scissors is manufactured from synthetic resin or the like.

[Brief explanation of the drawing]

1 is a plan view showing a partial cross section of scissors having an outer ring portion of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an exploded perspective view of the scissors piece of the scissors of FIG. 1; FIG. 4 is an enlarged view of part A in FIG. 1. FIG. 5 is a perspective view of conventional scissors. 1... Scissors 2... Scissors piece 3... Fulcrum hole 5... Grip handle 6... Mounting part 7... Outer ring part 7a... Inner end 7b
... Outer end 8 ... Insertion hole (fitting hole) 9 ... Round hole (mounting hole) 11 ... Fixing member

Claims (2)

[Claims] (1) A pair of scissors having a grip handle with a cross section other than circular and pivoted in a fulcrum hole, a fitting hole that fits into the grip handle at the inner end, and a mounting hole at the outer end. and a pair of outer ring parts that form a finger hole between the grip handle and the grip handle when the grip handle is inserted through the fitting hole and the tip of the grip handle is fixed to the attachment hole. Scissors having an outer ring portion characterized by: (2) The grip handle portions of the pair of scissors pieces that are pivotally supported in the fulcrum hole are formed to have a cross section other than circular, and the inner ends of the pair of outer ring portions that form finger holes between them and the respective grip handle portions. A fitting hole is made in which the grip handle fits, and the grip handle is inserted through the fitting hole, and the outer ring part is fitted to the outside of the grip handle, and the outer ring part is attached to the outer end thereof. 1. A method for manufacturing scissors having an outer ring, characterized in that the end of a grip handle is fixed to a fixing hole drilled in a fixing hole.