JPS6321512B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutter knife, and more particularly, to a safety cutter knife that can be used safely even by young children.

[Prior art and its problems]

2. Description of the Related Art Conventionally, cutter knives have been known that include a holder at the tip of a holder grip, and the blade is guided by the holder so as to be able to move forward and backward.

However, because traditional cutter knives use a sharp blade that protrudes directly from the tip of the holder,
I was hesitant to let young children who cannot use it well use it.

[Means for solving problems]

The purpose of the present invention is to provide a safety cutter knife that solves the above-mentioned problems.In particular, the present invention is provided with a blade 2 that advances and retreats from the tip of a holder grip 6 and has a cutting edge portion 2a laterally with respect to the advancing and retreating direction. A holder 5 is fixed to the holder grip 6, and is formed by bending a plate-shaped body so as to cover at least one surface, the cutting edge part 2a, and the back part 2b of the blade 2, and to allow the blade 2 to advance and retreat from the tip. In this type of cutter knife, the holder 5 has a first space area 7a in which the cutting edge portion 2a and the lower surface of the blade 2 can be exposed, and a second space area 7b where the upper surface of the blade 2 can be exposed. The blade is characterized in that a plate-shaped safety device 1 is provided above the front of the cutting edge portion 2a by cutting out a space 7 consisting of the cutting edge portion 2a.

[Effect]

Next, the operation of the present invention will be explained.

The safety cutter knife according to the present invention does not allow the blade 2 to protrude from the tip of the holder 5, but can sharpen pencils, bamboo sticks, etc. with the blade 2 located in the first space 7a provided in the middle of the holder 5. Can be done. In this case, the pencil or the like comes into contact with the cutting edge portion 2a through the first space area 7a, and the shavings are discharged from the second space area 7b. Further, a safety device 1 formed in the form of a plate by the remainder of the holder 5 that partitions each space area 7a and 7b is positioned above and in front of the blade 2 to prevent the danger of the blade 2 being touched by hands or the like.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

First, 6 is a holder grip, and a holder 5 fixed to the holder grip 6 protrudes from the tip thereof. This holder 5 is formed by bending a plate material, and for example, the holder 5 of the embodiment has a flat cylindrical shape. Further, the holder 5 has an open tip, and constitutes a known cutter knife through which a blade 2 is protruded or stored in a holder grip 6 so as to be freely retractable. In addition, blade 2
is provided with a cutting edge portion 2a on the lateral side with respect to the advancing/retracting direction.

On the other hand, a cut-out space 7 is provided in the middle of the holder 5. The space area 7 includes the cutting edge portion 2a and the blade 2.
It consists of a first space area 7a where the lower surface of the blade 2 can be exposed, and a second space area 7b where the upper surface of the blade 2 can be exposed. As a result, the back part 2b of the blade 2 is held by the bent portions of the upper part 3 and lower part 4, which are the remaining parts of the holder 5, and the blade 2 is slidably guided by the holder 5. On the other hand, the remaining part of the holder 5 that partitions the space areas 7a and 7b is selected to be located above and in front of the blade 2, forming a plate-shaped safety device 1.

It should be noted that if the upper part 3 of the holder 5 is moved back as much as possible so that it comes into close contact with the blade 2, the shavings can easily escape without being hindered by the holder 5. Further, it is desirable that the lower part 4 of the holder 5 is also moved back to a necessary position so that a pencil or the like does not come into contact with it, and that it is brought into close contact with the blade 2. However, it is also important that both the upper part 3 and the lower part 4 of the holder 5 are not moved back more than necessary, thereby reducing the holding strength. Although the example is for a right-handed person, in the case of a left-handed person, the safety device 1 may be positioned on the opposite side.

Therefore, when sharpening a pencil or the like with the present safety cutter knife, it is sufficient to position the blade 2 in the first space area 7a and use the blade 2 in the first space area 7a to sharpen it in a normal manner. Note that the shavings are discharged above the blade 2 through the second space area 7b.

By the way, the current cutter knife is used with the blade protruding from the tip of the holder 5, but the safety cutter knife according to the present invention can sharpen pencils and the like with the blade 2 stored in the holder 5. Moreover, since the safety device 1 is provided, the blade 2 does not hit the hands or the like, so even young children or people with physical disabilities can use it safely. Recently, with the spread of electric pencil sharpeners, many young children do not know how to hold a cutter knife or how to sharpen it, but even young children can safely hold it. This allows children to develop manual dexterity and naturally learn the feeling of handling knives. Also, as a future working adult, I would like to
Children can also learn to properly handle knives at home.

〔Effect of the invention〕

As described above, the safety cutter knife according to the present invention can be used without the blade sticking out from the tip of the holder, and it is possible to safely educate young children about the use of cutlery without impairing the function of the conventional cutter knife. can.

In addition, it is highly safe and will not damage the human body or the floor even if it is dropped from a desk.

Furthermore, an existing cutter knife can be improved very easily, and an inexpensive, practical and easy-to-use cutter knife can be provided.

[Brief explanation of the drawing]

Figures 1 and 2: Front view of the safety cutter knife according to the present invention, Figure 3: Side view of the same, Figure 4: Third
An end view taken along line A-A in the figure. In the drawings, 1: safety device, 2: blade, 2a: cutting edge, 2b: back, 5: holder, 6: holder grip, 7: space area, 7a: first space area, 7b: second space Area.

Claims (1)

[Claims] 1 A blade 2 that moves forward and backward from the tip of the holder grip 6 and has a cutting edge portion 2a laterally with respect to the advancing and retreating direction, covers at least one surface, the cutting edge portion 2a, and the back portion 2b of the blade 2, and extends from the tip. In a cutter knife in which a holder 5 formed by bending a plate-shaped body is fixed to the holder grip 6 so that the blade 2 can move forward and backward, the blade tip 2a and the lower surface of the blade 2 are disposed within the plane of the holder 5. By forming a notch in the space area 7 consisting of a first space area 7a where the upper surface of the blade 2 can be exposed and a second space area 7b where the upper surface of the blade 2 can be exposed, a plate-like shape is formed above the front part of the blade edge part 2a. A safety cutter knife characterized by being provided with a safety device 1.