JP5766417B2 - Cutter knife holder - Google Patents

Description

  The present invention relates to a cutter knife holder, and is intended to further improve usability by providing a screwdriver function to the holder.

  The cutter knife holder has a groove body with a groove-type cross section that has a piercing groove portion opened at the front and rear portions, and has a grip portion as a whole, and is fixedly held in the groove portion of the grip body and is similar to the grip body. Are known, and the sleeve itself is provided with a gripping portion to simplify the structure. In either case, the slider is moved by an operation button and the cutter is moved within the sleeve. The cutter blade can be inserted and removed from the sleeve by sliding the blade back and forth.

  This type of conventional cutter knife is usually carried around at construction sites, etc., and a driver function for turning a "screw" is added to the tip of the sleeve to improve usability ( For example, refer to Patent Document 1 and Patent Document 2). However, when a driver function is given to the sleeve, the cutter blade is moved along the cutting line for cutting the blade so that a new sharp blade tip appears when the sharpness is dull. When folding, the entire area of the engraving line cannot be applied exactly to the edge of the end of the sleeve, so it is difficult to accurately fold the cutter blade along the engraving line. There was concern about ruining the original features of

Japanese Utility Model Publication No. 60-27864 Utility Model Registration No. 3087995

  An object of the present invention is to propose an easy-to-use cutter knife holder that can also have a function as a driver without impairing the original function of the blade-type cutter knife.

The present invention is a cutter knife holder having a sleeve for slidably storing a cutter blade,
The sleeve supports the cutter blade on the back side thereof, and the sleeve body is folded back along the longitudinal direction at the upper side and the lower side extending along the longitudinal direction of the sleeve body. It consists of a pair of flange parts that cooperate to form a storage space for the cutter blade inside,
An upper side edge that is connected to an upper end of the sleeve body and extends at an inclination with respect to a longitudinal direction of the sleeve body, and a longitudinal direction of the sleeve body that is connected to a lower side of the sleeve body. A planar shape partitioned by a lower side edge extending obliquely with respect to the upper edge and the lower edge and connecting the lower side edge to each other and pointing obliquely downward. A nail piece having a driver function as
The upper side edge and the lower side edge are at the same angle with respect to the tip edge,
The claw piece has the upper side edge extending in the same direction as the engraving line of the cutter blade, the lower side edge is present on an extension line of the lower side of the sleeve body, and the tip edge is the upper side It edges perpendicular to the bisector of the angle between the edge and the lower side edge Tona is,
The sleeve body includes a tongue piece having a window hole for passing a string at a rear end portion located on the opposite side in the longitudinal direction with respect to a distal end portion of the sleeve body, and integrally connected to the sleeve body.
The tongue piece is a saddle type that warps toward the back side of the grip body and is concave toward the front side of the grip body with respect to the grip body that fixes the sleeve to a groove formed from the front end side to the rear end side. A cutter knife holder comprising a flat strip having a cross-sectional shape .

  Further, the claw piece desirably has a tip edge formed by a straight portion having a length of 6 mm, and further preferably has a chevron shape having an angle of 127 ° by the upper side edge and the tip edge.

  The tip of the sleeve body is partitioned and formed by an upper edge connected to the upper edge of the sleeve body, a lower edge connected to the lower edge, and a leading edge connecting the upper edge and the lower edge to each other. By providing a claw piece with the edge oriented obliquely downward and making the upper side edge and the lower side edge both at the same angle with respect to the tip edge, without impairing the original function of the blade-type cutter knife The claw piece can be made to function as a driver.

  The angle of the upper side edge of the nail piece is the same angle as the cutting line of the cutter blade, the lower side edge is present on the extension line of the lower side of the sleeve body, and the tip edge is the angle formed by the upper side edge and the lower side edge. Provided so that it is perpendicular to the bisector, and the tip edge of the claw piece is formed by a straight line portion, and a chevron shape is formed by the upper side edge and the tip edge, so that the cutter blade can be stably It is possible to ensure a length that can be supported, and the cutter blade can be accurately folded along the score line for blade folding. Of the screwdrivers, the flat-blade screwdriver is the mainstream size called “6 × 100”, and the positive screwdriver is the mainstream size called No.2, both of which consist of a shaft with a diameter of 6 mm. On the other hand, as for the shape and dimensions of the driver, for example, in a “6 × 100” flat-blade screwdriver, the tip is 6 mm wide and 0.9 mm thick, as defined in the Japanese Industrial Standard “Screwdriver”. However, by adopting the above configuration, an ideal shape as a driver can be secured.

  By providing a tongue piece composed of a flat belt-like body having a saddle-shaped cross-sectional shape that is integrally connected to the sleeve body and warps to the back side of the grip body and the front side of the grip body is concave at the rear end portion of the sleeve body. This tongue piece and the operator can be linked with each other via a safety rope, which helps prevent the cutter knife from falling.

  The eggplant or carabiner is generally composed of a metal wire having a diameter of more than 5 mm in diameter, and the hole for threading provided in the cutter knife holder has a small size. It is difficult to link a member such as a carabiner to the string-through hole, and in order to enable the link, there is a problem such as an increase in the size of the holder. Since the size of the hole can be made relatively large without increasing the size of the holder, it is possible to easily apply such a coupling tool.

It is a front view of the holder of the cutter knife according to this invention. It is the figure which showed the back surface of FIG. It is the figure which showed the bottom face of FIG. It is the figure which showed the side surface of FIG. It is an external appearance perspective view of the holder of the cutter knife shown in FIG. (A) and (b) are the figures which showed the sleeve integrated in the holder shown in FIG. 1, (a) is a front view, (b) is a bottom view. It is the figure which expanded and showed the principal part of FIG. (A)-(c) is the figure which took out and showed the tongue piece, (a) is sectional drawing, (b) is a front view, (c) is a side view. (A)-(c) is the figure which showed the other example of the tongue piece, (a) is a front view, (b) is a bottom view, (c) is a side view. (A)-(c) is the figure which showed the further another example of the tongue piece, (a) is a front view, (b) is a bottom view, (c) is a side view. It is an external appearance perspective view of the principal part of the holder according to this invention. (A) and (b) are the external appearance perspective views of the principal part of the holder according to this invention, (a) forms the stepped part and made thin-walled, (b) becomes a taper tip. In this way, an inclination is given. It is the figure which showed the principal part of the holder. It is the figure which showed the principal part of the holder. It is the figure which showed the principal part of the holder. It is the figure which showed the principal part of the holder. It is the figure which showed the principal part of the holder.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
1 to 6 are diagrams schematically showing an embodiment of a holder according to the present invention in which a metal sleeve and a synthetic resin grip body are combined, and FIG. 1 shows the front of the holder. 2 is a view showing the back surface of the holder, FIG. 3 is a view showing the bottom surface of the holder, FIG. 4 is a view showing the side surface of the holder, and FIG. FIG. 6A and FIG. 6B are views showing the overall shape of the sleeve.

  Reference numeral 1 in FIGS. 1 to 6 denotes a grip body that forms a basic skeleton of a cutter knife. The grip body 1 is formed of a piercing groove portion in which a groove portion 1a is formed from a front portion F to a rear portion G and an end portion thereof is open in any case, and the entirety forms a grip portion. The rear portion G of the grip body 1 is provided with a cutout portion 1b that increases in width toward the rear portion G side.

Reference numeral 2 denotes a sleeve which is arranged along the groove 1a of the grip body 1 and is fixedly held. As shown in FIG. 6, the sleeve 2 has a plate-like sleeve main body 2a with at least a tip projecting from the front open end of the groove 1a (W is the width dimension and L is the axis). And the upper side 2a ₁ and the lower side 2a ₂ of the sleeve main body 2a are folded back along the longitudinal direction of the sleeve main body 2a, and a storage space M for the cutter blade C is defined inside the sleeve main body 2a in cooperation with the sleeve main body 2a. It is comprised from a pair of flange parts 2b and 2c to form.

  Reference numeral 3 denotes an operation button that has a projection P that fits into a hole formed at the rear end of the cutter blade C and that is slidably linked to the flange portions 2b and 2c of the sleeve body 2a. By putting a finger on the operation button 3 and moving the slider 3a located immediately below the operation button 3 along the axis L toward the front F or the rear G, the cutter blade C is put in and out.

Reference numeral 4 denotes a claw piece integrally provided at a corner portion of the lower side 2a ₂ of the distal end portion of the sleeve body 2a. The claw piece 4, the upper side edge 4a leading to the upper side 2a ₁ of the sleeve body 2a, a lower side edge 4b leading to the lower side 2a ₂ of the sleeve body 2a, the upper side edge 4a and the lower side edge 4b mutually The leading edge 4c has a plane shape defined by the connecting leading edge 4c, the leading edge 4c is obliquely downward (facing the lower side of the sleeve body 2a), and the upper edge 4a and the leading edge 4c; The tip edge 4c and the lower side edge 4b form a chevron shape, respectively. The width dimension e of the leading edge 4c is set as appropriate.

When the angle between the upper edge 4a and the leading edge 4c is θ ₁ and the angle between the lower edge 4b and the leading edge 4c is θ ₂ , the angles θ ₁ and θ ₂ are as shown in FIG. And the angle of the upper edge 4 and the angle C ′ of the cutter blade C are the same, and the tip edge 4c is formed by the upper edge 4a and the lower edge 4b. and a angle bisector formed edge with a linear section which is perpendicular to L _1.

  Reference numeral 5 denotes a tongue piece provided integrally with the rear end portion of the sleeve body 2a. This tongue piece 5 has a window hole for passing a string, and has a shape that fits into a notch 1b formed in the rear portion G of the grip body 1 and warps to the back side thereof. As shown in FIGS. 8 (a) to 8 (c), the tongue piece 5 is formed of a flat belt-like body having a bowl shape that is concave toward the front side of the grip body 1. A U-shaped groove 5a is formed on the surface of the flat strip to ensure strength.

The shape and dimensions of the driver are defined by Japanese Industrial Standard “screwdriver”. For example, the tip of a “6 × 100” flat-blade screwdriver has a width W _{1 of} 6 mm and a thickness t of 0.9 mm. Therefore, this dimension may be applied to the claw piece 4. Further, by setting the claw piece 4 to a shape and size suitable for a cross-recessed screw, it can be used as a plus driver.

  In the cutter knife holder configured as described above, the function as a driver can be imparted without impairing the function originally possessed by the blade folding cutter knife. There is an advantage that the number of tools to be carried can be reduced. In particular, the screw can be turned while holding the holder, so there is no need to change tools and work efficiency can be improved.

  As an operation that requires a flathead screwdriver, for example, there is an operation of removing a resin screw provided on a cover when replacing a carbon brush of an electric tool. The carbon brush of the electric tool is not frequently replaced, so it is not always necessary to carry a flat-blade screwdriver. However, if there is no flat-blade screwdriver, it will be impossible to use the electric tool. The invention is particularly effective in such cases.

  Since the nail piece 4 can be hardened by hardening it, it can be used as a "spar" other than a screwdriver. There is no, and stable work can be performed.

  The claw piece 4 can be integrally connected (integrally formed) to the sleeve main body 2a, so that it is not necessary to attach the claw piece 4 to the sleeve main body 2a, so that the holder can be easily assembled.

  The engraving line C ′ of the cutter blade C is generally at an angle of about 60 ° with respect to the blade surface, but there are blades with special shapes having angles of 30 ° and 45 °. Yes. Therefore, 60 °, 45 ° or 30 ° is applied as the angle of the upper side edge 4a of the claw piece 4 (the same angle is applied to the lower side edge 4b).

  When the angle of the upper edge 4a of the claw piece 4 is 60 °, the angle of the tip edge 4c with respect to the blade surface of the cutter blade C is 120 °. Similarly, when the angle is 45 °, 112.5 ° and 30 ° In this case, the angle is 105 °.

If the angle of the upper side edge 4a and the angle of the lower side edge 4b are not equal to the tip edge 4c (θ ₁ = θ ₂ ) respectively, the screw hole will not enter well when used as a screwdriver. There is a problem that the uniform force is not transmitted to the screw. Furthermore, a so-called cam-out phenomenon is likely to occur where a force with which the shallower angle is pulled out of the screw is applied.

  For this reason, it is important to set the angles of the upper side edge 4a and the lower side edge 4b of the claw piece 4 to be equal to the tip edge 4c and not to become too large (so as not to become shallow). . The claw piece 4 is preferably arranged so that the tip edge 4c is obliquely downward, that is, toward the ventral side (lower side) of the cutter blade C, so that the grip is changed when using either a cutter knife or a screwdriver. Since it is not necessary, workability can be improved.

  In the holder in which the cutter blade C is slid by the operation button 3 and put in and out, it is common to pull out the operation button 3 backward when loading a new cutter blade C. If a large-sized string passage window hole is provided at the rear end portion of the sleeve 2 to which the metal member is applied, a metal fitting or the like linked to the window hole may obstruct the pulling of the operation button 3. Therefore, window holes are provided in areas that do not affect the movement of the operation button 3 or in a range that does not affect the grip of the grip, such as the end of the side of the grip body that is usually molded from resin. It was normal to link a safety rope through this window hole (see Utility Model Registration No. 2596856). However, the conventional window hole has been increased in size from the viewpoint of ensuring strength. A limit in that there were also cases that can not be connected with a tool such as a useful carabiner and eggplant for cooperating to secure the rope.

  A tongue piece 5 that is warped toward the back side of the grip body 1 is integrally provided at the rear end portion of the sleeve body 2a, and the window hole of the tongue piece 5 is used as a stringing hole. The size of the string-through hole can be increased without obstructing the slide, and it is possible to link with a safety rope by a carabiner, an eggplant or the like, and the safety is further enhanced. When the tongue piece 5 is formed of a flat band-like body that is concave toward the front side of the grip body 1, the operation button 3 is pulled out from the sleeve body 2a even when the carabiner or eggplant is directly connected. The cutter blade can be replaced.

The angle of curvature θ ₃ of the tongue piece 5 (see FIG. 8A) is preferably inclined at least about 15 ° with respect to the sleeve body 2a. This is because the movement of the operation button 3 and the slider 3a is not obstructed even if the carabiner, the eggplant or the like is left connected to the window hole by tilting it so as to be at least about 15 °.

The tongue piece 5 may be warped at an angle θ ₃ , but as shown in FIGS. 9A to 9C, the tongue piece 5 may be bent linearly and displaced to the back side.

  Moreover, it is also possible to apply a flat piece as it is without bending the tongue piece 5 linearly. In this case, as shown in FIGS. 10 (a) to 10 (c), a carabiner, an eggplant or the like is used. At least one groove-like recess 5a for allowing a part of the tool to enter can be provided.

  In applying the tongue piece 5, when the operation button 3 is pulled out from the sleeve main body 2 a together with the slider 3 a, the carabiner and the eggplant are inserted into the concave portion 5 a so that the operation lever 3 can be smoothly pulled out.

  The tongue piece 5 is preferably hardened to increase its strength, and can function as a “spar” that folds the cardboard box during packaging of articles. In addition, when opening the cardboard box without damaging the contents, use it as a tool used when opening the can lid of tools or paint, or as a presser that holds the edge of the carpet when applying the carpet. Can do.

  FIG. 11 shows a structure in which strength is improved by increasing the thickness of the tip portion of the sleeve 2 including the claw piece 4.

  As a result of increasing the thickness, if the claw piece 4 cannot function as a driver, the claw piece 4 is cut or pressed to form a stepped portion as shown in FIGS. It may be formed and thinned (FIG. 12 (a)), or may be provided with an inclination that makes the tip tapered (FIG. 12 (b)).

FIG. 13 shows an example in which the claw piece 4 is provided on the upper side 2a ₁ corner of the distal end portion of the sleeve 2. In the holder having such a structure, the holder is changed between the case where the cutter knife is used and the case where it is used as a driver, and the holder is used upside down. However, when the exposed length of the cutter blade C is increased. There is an advantage that the claw piece 4 does not get in the way. In this case, the tip edge 4c can be used as a guide when the blade is folded by setting the angle of the tip edge 4c to be the same as the score line C 'of the cutter blade C.

In FIG. 14, the angle formed by the straight line portion of the tip edge 4c and the lower side 4a ₂ is 90 °. When the dimension of the straight edge portion of the tip edge 4c is set to 6 mm to function as a driver, the center axis of the screw turning operation (the cutter holder turning operation) coincides with the lower side 2a _{2 of the} sleeve 2 so that workability is improved. There is an advantage that can be improved. The angle of the leading edge 4c can be changed as appropriate.

The dimension e of the leading edge 4c (the leading edge 4c is provided in a direction orthogonal to the axis L) is set to about 2 or 3 mm, and the angle θ ₄ formed by the upper side edge 4a and the lower side edge 4b is set to a cross-recessed screw. In the case of the shape as shown in FIG. 15 with the angle of the hole (about 127 °), it can function as a plus driver.

In order to function as a plus driver, the claw portion 4 may be provided near the lower side 2a _{2 of the} sleeve 2 as shown in FIG. In this case, the front edge 4c and the lower edge 4b may be formed in a “shape” (an angle), and the angle θ ₅ may be the angle of the cross hole screw hole. The upper side edge 4a and the leading edge 4c can be set so that the angles formed by the straight line parallel to the axis L of the sleeve body 2a are the same.

FIG. 17 shows a structure in which the edge portion of the tip edge 4c (the connection portion between the upper side edge 4a and the lower side edge 4b) is cut out at a right angle. In the case of having such a claw piece 4, it is possible to effectively avoid a cam-out. In this case, by setting the width dimension e ₁ of the tip edge 4c to 6 mm, it matches the standard driver size.

  The claw piece 4 can be provided integrally with the sleeve main body 2a of the sleeve 2, but the claw piece 4 may be formed of a separate member and fixed to the sleeve main body 2a by welding, bonding or screwing. Further, a rail member may be provided on the back surface of the sleeve body 2a, and the claw piece 4 may be moved back and forth along the rail member.

  As the holder according to the present invention, the structure in which the grip body 1 is combined with the metal sleeve 2 has been described. However, the grip 2 may be formed directly on the sleeve 2 by changing the external shape of the sleeve 2. In this case, the structure can be simplified by reducing the number of components of the constituent members.

  An easy-to-use cutter knife holder with a driver function can be provided.

DESCRIPTION OF SYMBOLS 1 Grip main body 1a Piercing groove part 1b Notch part 2 Sleeve 2a Sleeve main body 2b Flange part 2c Flange part 3 Operation button 3a Slider 4 Claw piece 4a Upper side edge 4b Lower side edge 4c Tip edge 5 Tongue piece

Claims (3)

A cutter knife holder having a sleeve for slidably storing a cutter blade,
The sleeve supports the cutter blade on the back side thereof, and the sleeve body is folded back along the longitudinal direction at the upper side and the lower side extending along the longitudinal direction of the sleeve body. It consists of a pair of flange parts that cooperate to form a storage space for the cutter blade inside,
An upper side edge that is connected to an upper end of the sleeve body and extends at an inclination with respect to a longitudinal direction of the sleeve body, and a longitudinal direction of the sleeve body that is connected to a lower side of the sleeve body. A planar shape partitioned by a lower side edge extending obliquely with respect to the upper edge and the lower edge and connecting the lower side edge to each other and pointing obliquely downward. A nail piece having a driver function as
The upper side edge and the lower side edge are at the same angle with respect to the tip edge,
The claw piece has the upper side edge extending in the same direction as the engraving line of the cutter blade, the lower side edge is present on an extension line of the lower side of the sleeve body, and the tip edge is the upper side It edges perpendicular to the bisector of the angle between the edge and the lower side edge Tona is,
The sleeve body includes a tongue piece having a window hole for passing a string at a rear end portion located on the opposite side in the longitudinal direction with respect to a distal end portion of the sleeve body, and integrally connected to the sleeve body.
The tongue piece is a saddle type that warps toward the back side of the grip body and is concave toward the front side of the grip body with respect to the grip body that fixes the sleeve to a groove formed from the front end side to the rear end side. A cutter knife holder comprising a flat strip having a cross-sectional shape .   The cutter knife holder according to claim 1, wherein a tip edge of the claw piece is a straight portion having a length of 6 mm.   The cutter knife holder according to claim 1, wherein the claw piece forms a chevron shape having an angle of 127 ° by an upper side edge and a tip edge.