JP3204314U - Electric knife cover - Google Patents

Abstract

To provide a knife cover for electrical work that can be operated safely, surely and easily even if it has a certain thickness and hardness, such as an exterior of a cable. The body comprises a sheath-shaped main body that is substantially the same shape as the blade of a knife and has a size that is slightly larger, and a part corresponding to the cutting edge of the blade tip of the main body and a part corresponding to the blade edge. Notches 2 and 3 were provided in the main body 1, and a part of the main body 1 was provided with a grindstone function. Moreover, you may give the piece 5 which has a grindstone function to at least one surface inside the said main body 1. As shown in FIG. Alternatively, at least one outer surface of the main body 1 may have a grindstone function. Furthermore, you may provide another substantially sheath shape part or a substantially bag shape part which has a grindstone function on the outer surface of the main body 1. [Selection] Figure 1

Description

The present invention relates to a cover for an electrician knife that is used when, for example, an exterior of an electric wire for wiring is peeled off in electrical work or the like.

In electrical work for connecting electric wires for wiring, etc., an electrical knife (hereinafter simply referred to as “knife”) G as shown in FIG. The exposure work is done on a daily basis. The knife G is composed of a blade 21 and a handle 22 each having a blade portion, and the blade 21 is composed of a blade edge 21a with a blade, a tip edge 21b, and a back peak 21c. Since such a knife G has a long blade edge 21a exposed, the hand, fingers, etc. may be injured during the above work, and gloves are worn during the work. However, when gloves are worn, it is difficult to perform the work, and the work is often performed without wearing the gloves, which may cause injury.

On the other hand, there exists a thing shown in patent document 1 as a safety cover of a fruit knife. When this fruit knife safety cover is attached to the outside of the blade, a 2 mm gap is provided between the blade and the inner surface of the safety cover, and when peeling the fruit, the peel of the fruit peeled from the gap With the above safety cover, the fruit knife can be peeled off without exposing the edge of the fruit knife to the user side, so it is safe for the user. is there.
Japanese Patent Laid-Open No. 9-155081

However, in the above-mentioned Patent Document 1, it may be used when a thin and soft object such as a fruit peel is peeled off, but it cannot be used with a hard object having a certain thickness such as the outer sheath of the cable. In addition, since one side of the fruit knife is completely covered with a safety cover, it is not possible to make a cut in the exterior of the cable, and the exterior of the cable cannot be peeled off neatly. Moreover, the tip of the fruit knife is completely hidden behind the safety cover. For these reasons, the safety cover as in Patent Document 1 cannot be used as the electric knife cover.

This invention was made in view of these points, and an electrical knife cover that can be operated safely, surely and easily even if it has a certain thickness and hardness, such as the exterior of a cable. To solve the above problems.

The invention of claim 1 comprises a sheath-shaped main body that is substantially the same shape as the knife blade and is slightly larger than the knife blade, and a portion of the main body that corresponds to the tip of the knife blade tip inserted into the main body. And a part corresponding to the blade edge was provided with a notch, and a part of the main body was provided with a grindstone function to provide a knife cover for electrical work.

The invention of claim 2 comprises a sheath-shaped main body that is substantially the same shape as the knife blade and is slightly larger than the knife blade, and a portion of the main body that corresponds to the tip of the knife blade tip inserted into the main body. An electrical knife knife cover was provided in which a notch was provided, a notch was provided on a part of the edge opposite to the edge provided with the notch, and a part of the main body was provided with a grindstone function.

The invention according to claim 3 is the electric knife cover according to claim 1 or 2, wherein at least one surface inside the main body has a grindstone function.

The invention of claim 4 is the electric knife cover according to any one of claims 1, 2, or 3, wherein at least one outer surface of the main body has a grindstone function.

The invention according to claim 5 is the invention according to any one of claims 1, 2, 3 or 4, wherein another substantially sheath-shaped part or substantially bag-shaped part having a grindstone function is provided on one surface of the main body. A knife cover for electrical work was used.

The invention according to claim 6 is characterized in that the main body has a portion corresponding to the cutting edge or a portion corresponding to the peak as an axis, and a portion corresponding to the peak or a portion corresponding to the cutting edge can be opened and closed, and a part corresponding to the peak or the cutting edge. The electric knife cover according to any one of claims 1, 2, 3, 4, and 5, wherein a connection mechanism is provided in a part corresponding to the above.

According to the inventions of claims 1, 2, 3, 4 and 5, since the blade edge and cutting edge of the knife are not exposed more than necessary, the cable, etc. without incurring injury of cutting hands, fingers, etc. Even if it has thickness and hardness, it can be stripped off safely, reliably and easily. In addition, since a part of the knife cover has a grindstone function, it is possible to sharpen the blade edge of the knife simply by inserting the blade of the knife, which is convenient.

Further, according to the invention of claim 2, when the cutting edge of the knife is exposed from the notch provided in the portion corresponding to the cutting edge of the main body, there is no notch in the portion corresponding to the cutting edge. When the cutting edge of the knife is exposed from the notch provided in the portion corresponding to, there is no notch in the portion corresponding to the cutting edge of the main body. Therefore, since the blade of only the location to be used is exposed, it is very safe and the operator can work with peace of mind.

Further, according to the invention of claim 6, in addition to the above effect, since the knife cover is provided so as to be freely opened and closed, it can be easily replaced when the effect of the grindstone function provided on the inside is deteriorated, Easy to clean.

It is a perspective view of the state which attached the knife cover of Embodiment 1 of this invention to the knife. It is a front view of the knife cover of Embodiment 1 of this invention. It is a perspective view in the state where the exterior of a cable is shaved using the knife which attached the knife cover of Example 1 of this invention. It is a front view of the knife cover of Embodiment 2 of this invention. It is a front view of the knife cover of Embodiment 3 of this invention. It is an expanded view of the state which opened the knife cover of Embodiment 4 of this invention vertically. It is a front view of the knife cover of Embodiment 5 of this invention. It is a perspective view of the state which attached the knife cover of Embodiment 5 of this invention to the knife. It is a perspective view of the state which is shaving the exterior of a cable using the knife which attached the knife cover of Embodiment 5 of this invention. It is a perspective view of the knife for electrical works.

(Embodiment 1)
Hereinafter, an electrical knife cover (hereinafter simply referred to as “knife cover”) A according to Embodiment 1 of the present invention will be described with reference to the drawings. 1, 2 and 10, the knife cover A is composed of a sheath-shaped main body 1 which is substantially the same shape as the blade 21 of the knife G and is slightly larger. As a material, any material such as leather, plastic, paper, and cloth may be used as long as the main body 1 can be formed.

Further, in the main body 1, a notch 2 is provided in a portion corresponding to the cutting edge of the blade tip of the knife, and a substantially semicircular shape centering on the most frequently used portion on the front side of the portion corresponding to the cutting edge. A notch 3 is provided. These notches 2 and 3 are provided on both sides of the main body 1. Furthermore, the one piece 5 which has a grindstone function is stuck and attached to both inner surfaces of the main body 1 near the knife insertion opening 4. As a material having a grindstone function, any material having a grindstone function, such as a sharpening cloth used for Magic Sharpener (trademark) or a razor used in a barber or a leather band, can be used.

Next, the usage method of this knife cover A is demonstrated. First, as shown in FIG. 1, the knife cover A is put on the blade 21 of the knife G and attached. Then, both side surfaces of the cutting edge 21b of the knife G are exposed from the notch 2 at the tip of the knife cover A, and a part of the portion corresponding to the cutting edge 21a of the knife of the knife cover A is cut into a substantially semicircular shape. A part of both side surfaces of the blade edge 21a is exposed from the notch 3.

Using such a knife G, as shown in FIG. 3, the blade edge 21a of the knife G exposed from the notch 3 of the knife cover A is pressed against the exterior of the cable F at a right angle, and the blade edge 21a is pushed to the outer periphery of the cable. Rotate along to make an annular cut and scrape off the exterior. Further, in order to cut along the longitudinal direction of the cable F along the longitudinal direction of the cable F, the cutting edge 21b of the knife G exposed from the notch 2 at the tip of the knife cover A is pushed into the cable F. Make a notch.

By using in this way, the cutting edge 21a and cutting edge 21b of the knife G are not exposed more than necessary, and it is safe and greatly reduces the risk of injury to the operator's hands, fingers, etc. I can do it. Further, since it is not necessary to fit gloves, workability is not impaired.

Moreover, since the piece 5 which has a grindstone function is stuck on both inner surfaces of the knife cover A in the vicinity of the knife insertion slot 4, the blade 21 of the knife G is inserted into the knife cover A and removed. Thus, the cutting edge 21a of the knife G can be sharpened. When the work is finished, the knife cover A is removed and a normal cover is attached.

(Embodiment 2)
Hereinafter, a knife cover B according to Embodiment 2 of the present invention will be described with reference to the drawings. Here, only the configuration different from the knife cover A of the first embodiment will be described.

In the second embodiment, as shown in FIG. 4, a piece 6 having a rough grindstone function is attached to one surface of the outer end of the knife cover B, and a piece having a fine grindstone function on the other surface (not shown) ). Similar to the first embodiment, the knife cover B can be used by being attached to the knife G. Further, the cutting edge 21a of the knife G can be sharpened by rubbing the cutting edge 21a and cutting edge 21b of the knife G against the coarse piece 6 or the fine piece.

(Embodiment 3)
Hereinafter, a knife cover C according to Embodiment 3 of the present invention will be described with reference to the drawings. Here, only the configuration different from the knife covers A and B of the first and second embodiments will be described.

In this third embodiment, as shown in FIG. 5, the semicircular cutout 3 is sandwiched between one surface of the outer front end and the rear end of the knife cover C, and the pieces 7a and 7b having a grindstone function on the inner side. The upper and lower ends are attached to each other, and the substantially sheath-shaped portion 7 is provided. That is, apart from the sheath-shaped main body 8 into which the knife G is inserted, a substantially sheath-shaped portion 7 for sharpening the knife is provided. Similar to the first and second embodiments, the knife cover C can be attached to the knife G and used for work. Further, the blade edge 21a and the cutting edge 21b can be sharpened by putting the blade 21 of the knife G in and out of the substantially sheath-shaped portion 7.

(Embodiment 4)
Hereinafter, the knife cover D of Embodiment 4 of this invention is demonstrated based on figures. Here, only the configuration different from the knife covers A, B, and C of the first, second, and third embodiments will be described.

FIG. 6 shows a developed view of the knife cover D, and the sheath shape forming the knife cover D is such that the portion 10 corresponding to the peak can be opened and closed with the portion 9 corresponding to the cutting edge as an axis, and one of the portions 10 corresponding to the peak. A snap 11 is provided as a connection mechanism in the part. Moreover, the pieces 12a and 12b which have a grindstone function are each stuck and attached to the inner front end and rear end of the sheath shape.

As a result, the openable and closable knife cover D is folded around the portion 9 corresponding to the blade edge, and the snap 11 is fixed at the portion corresponding to the peak of the knife G, and the knife G is covered with the sheath-like material completed. It can be attached and used for work in the same manner as in the first, second and third embodiments. Further, the blade edge 21a and the cutting edge 21b can be sharpened by taking the blade 21 of the knife G into and out of the knife cover D.

The mechanism for connecting both sides of the knife cover D is not limited to the snap 11, and a hook-and-loop fastener and other connection mechanisms can be used. Further, although the portion 9 corresponding to the cutting edge is used as an axis and the portion 10 corresponding to a peak is freely opened and closed, of course, the portion 10 corresponding to the peak may be used as an axis and the portion 9 corresponding to the cutting edge may be provided to be opened and closed.

Moreover, since this knife cover can be freely opened and closed, it can be easily replaced when the effect of the pieces 12a and 12b having a grindstone function deteriorates, and the inside of the knife cover can be easily cleaned.

(Embodiment 5)
Hereinafter, a knife cover E according to Embodiment 5 of the present invention will be described with reference to the drawings. Here, only the configuration different from the knife covers A, B, C, and D of the first, second, third, and fourth embodiments will be described.

As shown in FIG. 7, a notch 14 provided in a portion corresponding to the cutting edge 21 b of the blade 21 of the knife G and a notch 15 provided in a portion corresponding to the cutting edge of the knife G of the main body 13 of the knife cover E. Are provided at different opposite edges in the longitudinal direction. Therefore, when such a knife cover E is attached to the knife G, as shown in FIG. 8, when the cutting edge 21b of the knife G is exposed from the notch 14 at the tip of the knife cover E, the notch 15 The blade edge 21a of the knife G is not exposed.

Therefore, when cutting the cable F, as shown in FIG. 9, the cutting edge 21a of the knife G is exposed from the notch 15, but the cutting edge 21b of the knife G is exposed from the notch 14 at the tip of the knife cover E. Is not exposed. Therefore, when this knife cover E is attached to the knife G, the cutting edge 21a or the cutting edge 21b is exposed only in the notch 15 or 14 where it is used, and the other part of the knife G is not exposed, which is extremely safe. .

In the first and third embodiments, the substantially semicircular cutout 3 is provided. However, the shape of the cutout 3 is not limited to a substantially semicircular shape, and is optimal for the purpose. The shape may be adopted. Further, the knife G with the knife cover A attached is used to peel off the outer casing of the cable F, but it can of course be used when stripping the outer casing of other wires in addition to the cable F.

In the second embodiment, one piece 6 having a grindstone function is provided on both side surfaces of the outer tip of the knife cover B, but only one of them may be provided. Furthermore, in the third embodiment, the specific configuration of the substantially sheath-shaped portion is described as another substantially sheath-shaped portion or a substantially bag-shaped portion having a grindstone function on the outer surface of the main body. The shape as the portion or the substantially bag-shaped portion is not limited to this, and other shapes may be used as long as the same effects as those of the third embodiment can be obtained.

A knife cover B knife cover C knife cover D knife cover E knife cover F cable 1 body 2 notch 3 notch 4 knife insertion port 5 one piece 6 one piece 7 substantially sheath-shaped part 7a one piece 7b one piece 8 body 9 equivalent to the cutting edge Part 10 Part corresponding to peak 11 Snap 12a One piece 12b One piece 13 Main body 14 Notch 15 Notch 21 Blade 21a Cutting edge 21b Cutting edge 21c Peak 22 Pattern

Claims (6)

It consists of a sheath-shaped main body that is substantially the same shape as the knife blade and has a size that is slightly larger. In the main body, there are a portion corresponding to the cutting edge of the blade tip of the knife inserted into the main body and a portion corresponding to the blade edge. Make a notch in part,
A knife cover for electrical work, wherein a part of the main body has a grindstone function. It consists of a sheath-shaped main body that is substantially the same shape as the blade of the knife and has a size that is slightly larger.In the main body, a notch is provided in a portion corresponding to the cutting edge of the blade tip of the knife to be inserted into the main body. A notch is provided in a part of the edge opposite to the edge provided with the notch,
A knife cover for electrical work, wherein a part of the main body has a grindstone function. The electric knife cover according to claim 1 or 2, wherein at least one surface inside the main body has a grindstone function. The electric knife cover according to any one of claims 1 to 3, wherein at least one outer surface of the main body has a grindstone function. 5. The electrical work according to claim 1, wherein another substantially sheath-shaped part or substantially bag-shaped part having a grindstone function is provided on one outer surface of the main body. Knife cover. The main body has a portion corresponding to the cutting edge or a portion corresponding to the peak as an axis, a portion corresponding to the peak or a portion corresponding to the cutting edge can be opened and closed, and a part corresponding to the peak or a part corresponding to the cutting edge 6. The electrical knife cover according to any one of claims 1, 2, 3, 4 or 5, wherein a connection mechanism is provided on the electrical mechanism.