JP3037342U - scissors - Google Patents

Abstract

(57) [Abstract] [Problem] Easy to manufacture, easy to adjust the cutting edge,
Provides scissors in good cutting condition. SOLUTION: In the scissors 11 in which a pair of upper blades 12 and lower blades 13 are rotatably connected by abutting the side surfaces thereof, both side surfaces of the lower blades 13 are formed substantially at right angles to the upper surface. 1
2 was folded back so as to sandwich the lower blade 13 to form a cutting blade between both side surfaces of the lower blade 13, and a chip discharging portion 18 was formed at the base of the upper blade 12.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to scissors in which cutting blades are formed on both sides of a lower blade for cutting cardboard, synthetic resin sheets and the like.

[0002]

[Prior art]

 Conventionally, as scissors having cutting blades formed on both side surfaces of a lower blade, there is open box scissors disclosed in Japanese Utility Model Publication No. 53-19509. This is composed of a pair of upper blade 1 and lower blade 2 as shown in FIG. The upper blade 1 has a U-shaped bearing portion 3 formed in the middle portion and a kerf 4 formed in the tip portion. The lower blade 2 has a central portion 2a inserted into the bearing portion 3 and rotatably attached by a shaft 5, and a cutting blade is formed between both sides of the tip 6 and the kerf 4.

[0003]

[Problems to be solved by the device]

 In the above-mentioned configuration, since there is a gap between the center portion 2a of the lower blade 2 and the bearing portion 3 on both sides, the lower blade 2 should move left and right by the amount of the gap during the scissor cutting operation. There is. When the lower blade 2 moves to the left and right, there is a problem that a sharpness is deteriorated because a gap is formed between the cutting edge portion, that is, the tip 6 and the cutting groove 4. In order to solve this problem, the gap between the central portion 2a of the lower blade 2 and the bearing portion 3 must be reduced, and both sides of the lower blade 2 and the kerfs 4 must be aligned with each other reliably. Since it does not exist, there is a problem that the adjustment of the alignment is complicated and the manufacturing cost becomes high.

The present invention has been made in view of the above circumstances, and an object thereof is to provide scissors that are easy to manufacture, have easy adjustment of a cutting edge, and have a good cutting state.

[0005]

Means for Solving the Problems The present invention relates to scissors in which a pair of upper blades and lower blades are rotatably connected by abutting their side surfaces, and both side surfaces of the lower blades are substantially perpendicular to the upper surface. When the upper blade is folded back so as to sandwich the lower blade to form a cutting blade between both side surfaces of the lower blade, and a chip discharge portion is formed at the base of the upper blade. Have characteristics.

[0006]

[Embodiment of the invention]

 An embodiment of the present invention will be described below with reference to FIGS. The scissors 11 are composed of a pair of upper blades 12 and lower blades 13. Grips 14 and 15 are formed on the upper blade 12 and the lower blade 13, respectively, and are rotatably connected to each other by a shaft 16 while abutting the intermediate side surfaces thereof.

The lower blade 13 has a sharp tip, and both side surfaces 13a are formed substantially at right angles to the upper surface 13b. The upper blade 12 has an upper portion (left portion shown in FIG. 1) from the shaft 16 folded back in a U shape from the back portion 12a, and both side surfaces 12b are in contact with both side surfaces 13a of the lower blade 13 to form a cutting blade 17 Are configured. As shown in FIG. 2, in the upper blade 12, if the width of the cutting blade 17 is narrow and the width of the back portion back portion 12a is formed wide, the resistance of the chips is reduced and the cutting process can be easily performed. Since the end surface 12c of the upper blade 12 is formed into an acute angle when the back portion 12a is folded back in a U shape, the polishing operation can be extremely facilitated. Further, at the base portion of the upper blade 12, there is formed a chip discharge portion 18 through which the chips generated by the cutting blade 17 are led out by cutting off the back portion 12a.

According to the above embodiment, the following effects are obtained. Since the a, the upper blade 12, and the lower blade 13 are in contact with each other at their side surfaces at the intermediate shaft 16, the one cutting blade 17 is in a good state in which the side surfaces are in contact with each other. Therefore, it is sufficient to adjust only the other cutting edge 17 for the dimensional adjustment at the time of manufacturing, so that the manufacturing can be extremely facilitated as compared with the conventional scissors. Since the b, the upper blade 12, and the lower blade 13 are in contact with each other at their side surfaces at the intermediate shaft 16, the gap between the cutting blades 17 on both sides does not fluctuate during the cutting operation of the scissors 11. Therefore, the cutting state is extremely good. c. Since the chip discharging portion 18 is provided at the base of the upper blade 12, since the chips are not led out from the discharging portion 18 to the outside and contact the lower blade 13, the cutting of the curved portion can be easily performed. .

[0009]

[Effect of the invention]

 The present invention is a scissor in which a pair of upper blades and lower blades are rotatably connected by abutting the side surfaces thereof, and both side surfaces of the lower blades are formed substantially at right angles to the upper surface. The lower blade is folded back so as to sandwich it to form a cutting blade between both side surfaces of the lower blade, and a chip discharge portion is formed at the base of the upper blade, so that the manufacturing is easy. It is extremely easy to adjust and the cutting effect is excellent, and it has an excellent effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of scissors according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a perspective view of conventional scissors.

[Explanation of symbols]

 11 Scissors 12 Upper Blade 12a Back 12b Side 13 Lower Blade 13a Side 13b Upper 16 Shaft 17 Cutting Blade 18 Discharge

[Procedure amendment]

[Submission date] November 5, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

[Fig. 2]

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

[Figure 3]

Claims (1)

[Utility model registration claims] 1. A pair of scissors in which upper and lower blades are rotatably connected to each other by abutting side surfaces thereof, wherein both side surfaces of the lower blade are formed substantially at right angles to an upper surface thereof. Scissors characterized in that the lower blade is folded back so as to sandwich it to form a cutting blade between both side surfaces of the lower blade, and a chip discharging portion is formed at a base portion of the upper blade.