JPH0847Y2 - Scissors - Google Patents

Description

[Detailed description of the device]

[0001]

TECHNICAL FIELD The present invention relates to scissors.

[0002]

2. Description of the Related Art Generally, scissors are constructed such that a pair of scissors having a cutting portion at a front portion and a handle portion at a rear portion are cross-polymerized at an intermediate portion in the front-rear direction, and the crossing portions are pivotally attached to each other so as to be openable and closable. Has been done.

[0003]

In the above-mentioned prior art, a blade is integrally formed at the cutting portion of each scissor piece, and when the cutting performance of the blade becomes poor, the blade is ground with a grindstone or the like. However, in this case, it takes a long time to sharpen the blade, and it takes a long time to acquire the skill to polish the blade. Further, the intersecting portions of the two scissors pieces were in surface contact over the whole, and had a large frictional resistance.

A first object of the present invention is to use a pair of scissors designed to facilitate replacement of a replacement blade by allowing the replacement blade to be detachably mounted without the need for polishing the blade. It is to provide a second object is to provide a contemplated scissors as scissors pieces are more smoothly opened and closed.

[0005]

The first technical means taken by the present invention to achieve the above-mentioned object is a pair of scissor pieces.
The front-rear direction intermediate portion of 2 is crossed and the crossing portion is pivotally attached.
Is, scissors having a blade 3 to the front inner surface of the scissors piece 2
In the above, a fitting portion 10 formed so as to be gradually narrowed in one direction in the front-rear direction is provided on the inner surface of the front portion of the scissor piece 2, and the side surfaces 12a on both sides in the width direction of the fitting portion 10 are provided. Scissors piece 2
The blade is formed on an inclined surface that tapers toward the inner surface, and the replacement blade 3 is formed with a fitting hole 13 that is removably fitted into the fitting portion 10, and a replacement blade on the inner surface of the fitting hole 13 is formed. On both sides 14a in the width direction,
There in that formed in substantially the same inclined surface and the side surface 12a so as to surface contact with the side surface 12a of the fitting portion 10, the second technical means, exchange
Blade 3, Wataru Ttehasa the crossover portion from the front end of the scissors piece 2
An opening 17 is formed at a portion of the spare blade 3 corresponding to the intersecting portion of the scissor piece 2 and is provided with an opening 17 for reducing frictional resistance due to contact between the portions.

[0006]

[Function] When the scissors become less sharp, a replacement blade 3
Need only be replaced, and there is no need to perform polishing as in the past. Further, in the first technical means, the spare blade 3 is superposed on the inner surface of the front portion of the scissors piece 2 by shifting the position of the fitting portion 10 in the direction in which the width of the fitting portion 10 becomes narrower, and then pressing the spare blade 3. By sliding it to the wide side of the fitting part 10 while attaching it, the side edges 14a on both sides in the width direction of the inner surface of the fitting hole 13 match the side surfaces 12a on both sides in the width direction of the fitting part 10, and the spare blade 3 is attached. ,Also,
By performing the operation opposite to the above, the spare blade 3 can be removed, and in this way, the spare blade 3 is adapted to be fitted and fixed to the inner surface of the front portion of the scissors piece 2 so as to be freely fitted and removed. blade 3 screws
It can be attached and removed with one touch without using fixing means such as
Therefore, replacement of the replacement blade is easy. In addition, in the second technical means, since the opening 17 is formed in the portion 18 corresponding to the intersecting portion of the scissors piece 2 of the spare blade 3, the scissors piece is formed.
The opening and closing of 2 becomes lighter and the scissors can be opened and closed smoothly.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a first embodiment corresponding to claim 1, in which scissors 1 are provided with a pair of scissors pieces 2 and a replaceable blade 3 which is detachably attached to each scissors piece 2. Become. The scissors piece 2 is provided with a cutting part 4 at the front part, a handle part 5 at the rear part, and a pivot part 6 at the middle part in the front-rear direction. As shown in FIG. A screw hole 8 is formed, and a screw insertion hole is formed in the pivot portion 6 of the other scissor piece 2.
9 are formed, and the pivotal joints of the pair of scissors pieces 2 are formed.
The scissors 1 can be opened and closed by crossing 6 and inserting a pivot 7 made of a screw into the screw insertion hole 9 and screwing into the screw hole 8.

As shown in FIG. 2, a fitting portion 10 is provided on the inner surface of the cutting portion 4 of each scissor piece 2 so that the spare blade 3 can be fitted and fixed in a removable manner. A triangular plate material (isosceles triangle in the example) is superposed and fixed on the inner surface of the cutting part 4 with screws. The material of this plate material can be appropriately selected. The fitting portion 10 is formed to have the same thickness as the spare blade 3 and is attached so as to be narrowed toward the front. Also,
As shown in FIGS. 4 and 5, the side surface 12a and the rear surface 12b on both sides in the width direction of the fitting portion 10 are formed in an inclined shape so as to be tapered toward the inner surface of the cutting portion 4, and the side surface 12a and the rear surface The inclination angle θ with respect to the direction perpendicular to the inner surface of the cutting portion 4 of 12b is formed to be 15 °. On the other hand, the spare blade 3 is formed in a shape substantially similar to the cutting portion 4 of the scissors piece, and a triangular fitting hole 13 corresponding to the fitting portion 10 is formed. Also,
Side surface 14a and rear surface 14b on both sides in the width direction of the replacement blade on the inner surface of the fitting hole 13
Are formed into inclined surfaces having similar inclination angles so as to match the side surface 12a and the rear surface 12b of the fitting portion 10. Then, as shown by phantom lines in FIG. 2, the blade 3 is inserted into the cutting portion 4 of the scissors piece 2.
The fitting hole 13 is superposed on the inner surface so that it is displaced forward with respect to the fitting portion 10, and then the replacement blade 3 is pressed down and slid backward so that the side surface 14a of the fitting hole 13 is fitted. Fits the side surface 12a of the part 10 and accordingly the fitting part
10 and the replacement blade 3 are elastically deformed so that the rear surface 14b of the fitting hole 13 matches the rear surface 12b of the fitting portion 10, the fitting hole 13 fits into the fitting portion 10, and the replacement blade 3 is fitted with scissor pieces. Fitted and fixed to the inner surface of the cutting part 4 of 2 with one touch. To remove the replacement blade 3, pull up the rear part of the replacement blade 3 in a direction away from the inner surface of the cutting part 4 to disengage the rear surface 14b of the fitting hole 13 from the rear surface 12b of the fitting part 10, and then replace it. The blade 3 can be slid forward and the replacement blade 3 can be removed with one touch.

On the inner surface of the pivotally attached portion 6 of each scissor piece 2, a spare blade is provided.
U-shaped spacer 15 formed in the same thickness as 3 is fixed,
Since the spacers 15 are brought into surface contact and slidably contact with each other at the intersecting portion of the scissors piece 2, the contact area is small and the scissors 1 can be smoothly opened and closed. Also,
As shown in FIG. 5, the spare blade 3 is formed in a curved shape outward in the width direction so that the edges 16 of the spare blade 3 surely contact each other. Then, as shown in the figure, it is preferable that the cutting portion 4 and the fitting portion 10 of the scissors piece 2 are also curved to fit the spare blade 3. Furthermore, spare blade 3
Has a slight twist in the front-rear direction so that the intersecting portions of the edges 16 of the spare blade 3 are surely in contact with each other.

6 and 7 show a second embodiment corresponding to claims 1 and 2, and each scissor piece 2 is the same as the first embodiment.
The fitting part 10 is attached and fixed to the inner surface of the cutting part 4 by means of the screw 11, and the replacement blade 3 has a fitting hole 13 to be fitted into the fitting part 10.
Are formed. Further, the spare blade 3 is formed in a shape substantially similar to the scissor piece 2 from the front end portion of the scissor piece 2 to the pivotal attachment portion 6, and the portion 18 of the spare blade 3 corresponding to the scissor piece 2 pivotal attachment portion 6 is formed. Since the opening 17 is formed, the contact area at the pivotally connecting portion 6 is small, the frictional resistance is small, the scissor piece 2 is lightly opened and closed, and the scissor 1 can be smoothly opened and closed. The other structure is substantially the same as that of the first embodiment.

[0011]

According to the present invention, when the scissors become less sharp, the replacement blade 3 may be replaced, and there is no need to polish the blade as in the conventional case. In particular, the first technical means In this case, since the spare blade 3 is adapted to be fitted and fixed on the inner surface of the front portion of the scissor piece 2 by sliding in the front-rear direction, the spare blade 3 is fixed. Ru can be detached with one touch without using a fixing means such as screws. Further, in the second technical means, since the opening 17 is formed in the portion corresponding to the intersecting portion of the scissors piece 2 of the spare blade 3,
The scissors piece 2 is lightly opened and closed, and the scissors can be smoothly opened and closed.

[Brief description of drawings]

FIG. 1 is an overall plan view of scissors showing a first embodiment.

FIG. 2 is a view of a scissor piece of the first embodiment as seen from the inner surface side.

FIG. 3 is a side sectional view showing a first embodiment of the scissors in a closed posture.

FIG. 4 is an enlarged view of part B in FIG.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a view showing a second embodiment as seen from the inner surface side of the scissors piece.

FIG. 7 is a plan view of a spare blade showing a second embodiment.

[Explanation of symbols]

 1 Scissors 2 Scissors piece 3 Spare blade 4 Cutting part 5 Handle 17 Opening part

Claims (2)

[Scope of utility model registration request] 1. The front-rear direction intermediate portion of the pair of scissors pieces (2) is
Crossed over and pivoted at said crossing portion, said scissor pieces (2)
Of the front inner surface in the scissors with a blade (3), fitting portion formed so as to gradually become narrower toward the longitudinal direction in one direction to the front inner surface of the scissors piece (2) (10) Protruding,
Scissor pieces (2) between the side surfaces (12a) on both sides of the fitting portion (10) in the width direction.
Formed on an inclined surface that tapers toward the inner surface, and forming a fitting hole (13) in the spare blade (3) for removably fitting in the fitting part (10), Side of the hole (13) on both sides in the width direction of the blade
Scissors characterized in that the (14a) is formed into an inclined surface substantially similar to the side surface (12a) so as to make surface contact with the side surface (12a) of the fitting portion (10). 2. A blade (3) is mounted on the scissor pieces I extending from the front end of the scissors piece (2) in cross section (2),該替blade
At the portion corresponding to the crossing portion of the scissors piece (2) of (3), an opening (1
Scissors according to claim 1 , characterized in that 7) are formed.