KR101478158B1 - A cutter knife - Google Patents

Abstract

The present invention relates to a multifunctional cutter knife having a cutter function of cutting the cutter knife by a blade and improved in structure to easily form a cutout groove so as to bend a corrugated cardboard or wallpaper.
The multifunctional cutter knife according to the present invention includes a cutter knife body 100 having a guide rail 105 having a front end and a rear end opened and a handle 120 connected to the blade 110 slidably moved on one side thereof; A cap member 200 detachably coupled to a rear end of the cutter knob body 100 to support the blade 110; And a protrusion 302 formed on an outer circumferential surface of the cap member 200. The cap member 200 is rotatably operated to project and retract to the outside through a rotating means, And a rotary blade member 300 for forming shear grooves 12 and 22 on one side of the corrugated cardboard 10 or the wallpaper 20 while rotating the rotary member 30, A receiving groove 205 opened downward to receive a part of the lower portion of the cap member 300 in a protruded state and having a stopping protrusion 205a for limiting a rotation angle of the link member 350 at an end thereof, And the other end is a link member 350 coupled to the pin 310 so that the rotary blade member 300 is rotatable.

Description

Multi function cutter knife {A CUTTER KNIFE}

The present invention relates to a multifunctional cutter knife. More particularly, the present invention relates to a multifunctional cutter knife having an improved cutter knife structure for easily forming a cut groove for bending a corrugated cardboard or wallpaper, .

In general, cutter knives are office supplies used to cut paper materials such as scissors. In the case of scissors, cutter knives are often used to cut curves or circles rather than straight lines, while cutter knives are used to cut many paper sheets in a straight line. It can be said that it is different.

In the case of a knife used for such a purpose, a cross-sectional knife having a blade formed on one side of the metal body in the longitudinal direction and a knob on the other side has been used. However, There is a possibility that a safety accident may occur at the time of operation, and if the leading end of the blade is dull, the blade is not replaced and it is difficult to use the blade.

Therefore, in recent years, the blade is coupled to the operating portion reciprocally moved along the guide groove formed on the front surface of the main body having a predetermined length, and the blade is projected and retracted toward the front end of the main body by the forward and backward movement of the operating portion, The use of a cutter knife that cuts only the blades of a dull tip and makes a sharp blade again is becoming common.

The cutter knife is configured such that the blade itself is partially cut so that it can be used for a longer period of time, and since such a blade can be easily replaced, not only the purchase cost can be reduced, but only a part of the blade is projected to the tip of the main body Since the cutting operation is carried out, safety incidents can be reduced.

Such a cutter knife may further include additional functions in addition to the basic function of performing the cutting operation. Prior art related to this is the Korean Utility Model Registration No. 20-0366804 entitled "Cutter Knife with Ruler" Date: October 27, 2004).

However, the conventional corrugated cardboard for packaging boxes is a cardboard in which two cardboard sheets are located on one side and the other side, and two cardboards are wavy paper-like paperboard, and not a complete cutting of corrugated cardboard, but a sheath groove, It is difficult to cut the cut groove with the cutter knife because of the thick material of the existing corrugated cardboard. In addition, since the excessive force is required in the process of cutting the cut groove, the cutter knife blade And the like.

As a prior art for this purpose, as shown in Korean Registered Utility Model No. 20-0449956 entitled " Rotary cutter device for manufacturing corrugated cardboard box "(registered on August 18, 2010), corrugated cardboard A rotary cutter device for cutting a part of a material and forming a bent portion for pressing along a folding line so as to facilitate folding is disclosed.

Such a rotary cutter apparatus is characterized in that a blade is fixed to the outer surface of a rotating drum by using a block and a cutting blade is arranged on the upper portion of the pressing blade so that the corrugated board material passes through between the cutting drum and the backing drum, And is not only complicated in structure but also advantageous for mass production, but has a problem that it is somewhat difficult to actually apply in the field.

In addition, when a wallpaper thinner than a corrugated cardboard is applied to a corners of a corners, a curved groove is formed in the wallpaper by a cutter knife. In the case of a beginner, a thin wallpaper is cut There is a concern.

Korean Registered Utility Model Registration No. 20-0366804 entitled "Cutter knife with ruler" (registered on October 27, 2004) Korean Registered Utility Model No. 20-0449956 entitled "Rotary cutter device for manufacturing cardboard boxes" (registered on Aug. 19, 2010)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a multi-function cutter knife having an improved structure so as to have a function of forming a sheath groove of corrugated cardboard or wallpaper in addition to a cutting function, .

To achieve the above object, according to the present invention, there is provided a cutter knife comprising: a cutter knife body having a guide rail having a front end and a rear end opened and a handle coupled to the blade at one side thereof slidingly moved; A cap member detachably coupled to a rear end of the cutter main body to support the blade; And

A protruding portion formed on an outer circumferential surface of the cap member; and a sheath groove is formed on one side of the corrugated cardboard or wallpaper while being rotated when the cardboard or wallpaper comes into contact with one side of the corrugated cardboard or wallpaper. And a rotary blade member.

The rotating means includes a receiving groove having a lower end and an engaging protrusion for limiting a rotation angle of the link member to be received in a state where the lower portion of the rotating blade member is protruded from the cap member, And a link member which is axially coupled to be rotatable and whose other end is pin-coupled so that the rotary blade member is rotatable.

Another aspect of the present invention is a cutter knife comprising: a cutter knife body having a guide rail formed on one side thereof to assist a sliding operation of the blade, a tip end and a rear end thereof being opened and a cap member for supporting the blade at a rear end thereof;

A rotation blade for fixing the corrugated cardboard or wallpaper to the corrugated cardboard or wallpaper and fixing the corrugated cardboard or wallpaper to the corrugated cardboard or wallpaper, And a member.

According to another aspect of the present invention, there is provided a cutter knife comprising: a cutter knife body having a guide rail having a front end and a rear end opened and a handle coupled to the blade at one side thereof slidingly moved; A cap member detachably coupled to a rear end of the cutter main body to support the blade; And

A protruding portion is formed on an outer circumferential surface of the cap member, and a sheath groove is formed on one side of the corrugated cardboard or wallpaper while being rotated when it is contacted with one side of the corrugated cardboard or wallpaper. And a rotating blade member for rotating the rotating blade member.

According to the present invention, there is provided a pull-out means comprising: a rotatable blade member rotatably coupled to a lower portion of the cap member so as to be rotatable with a pin; A movable blade having two fixing grooves, and a spring member connected to the pin and imparting an elastic biasing force in one direction, wherein when the rotary blade member is returned to the first fixing groove, A portion of the lower portion of the main body is received in a protruded state.

First, the present invention includes a rotary blade member 300 having a projection 302 of a concave-convex structure formed on a rear end of a cap member 200 around an outer circumferential surface thereof to form a bending portion of the corrugated cardboard 10 or wallpaper 20 So that the sheath grooves 12 and 22 can be formed easily.

Secondly, since the rotary blade member 300 is provided with the rotation means or the drawing means capable of pulling the rotary blade member 300 outward, the rotary blade member 300 can be accommodated in the cap member 200 in a state where the rotary blade member 300 is partially protruded. The rotary blade member 300 can be used by being pulled out of the rotary blade member 300 during the main use of the rotary blade member 300 so that the convenience of the user is enhanced and the rotary blade member 300 having a relatively thinner thickness than the cutter blade main body 100 It is possible to prevent damage when the impact is transmitted and to prevent a safety accident caused by the user's fingers being caught in the rotary blade member 300.

1 is a perspective view of a multifunctional cutter knife according to a first embodiment of the present invention;
2 is a bottom view showing a state in which the rotary blade member of the present invention is housed in the receiving groove;
Figure 3 is a front view of Figure 2;
4 is a view showing an operation state of the rotating means of the present invention.
5A, 5B and 5C are front views showing a modification of the rotary blade member of the present invention.
6 is a use state diagram of the first embodiment of the present invention.
7 is a perspective view of a multifunctional cutter knife according to a second embodiment of the present invention;
8A and 8B are views showing the state before and after the operation of the multifunction cutter knife according to the third embodiment of the present invention.

The present invention has a cutting function in which the cutter knife is cut by the blade, and the cut groove can be easily formed so that the corrugated board or wallpaper can be bent.

1 to 6, a multifunctional cutter knife according to a first embodiment of the present invention includes a guide rail 105 (see FIG. 1) and a guide rail 105 A cap member 200 detachably coupled to the rear end of the cutter knob body 100 to support the blade 110 and a cap member 200 attached to a rear end of the cap member 200, And is rotatably driven to contact the corrugated cardboard 10 or the wall paper 20 to rotate the corrugated cardboard 10 or the wallpaper 20 on one side of the corrugated cardboard 10 or the wallpaper 20, And a rotary blade member (300) for forming the grooves (12, 22).

More specifically, the cutter knife body 100 has a known structure in which the knob 110 connected to the blade 110 is moved toward the tip side along the guide rail 105, .

1, the rotation means includes a receiving groove 205 opened downward to receive the rotary blade member 300 at an end of the cap member 200, And a link member 350 coupled to the pin 310 to allow the rotary blade member 300 to be rotatably disposed at an end thereof.

The receiving groove 205 is formed to receive a portion of the link member 350 and the rotary blade member 300 as shown in FIG. And a locking protrusion 205a for limiting the rotation angle is formed.

Further, the rotary blade member 300 has a shape in which the thickness of the edge of the outer circumferential surface gradually decreases toward the end.

Referring to FIG. 3, the rotary blade member 300 is received in a state of being accommodated in the cap member 200 at a usual time, and a part of the lower blade member is maintained in a protruded state.

4, the rotary blade member 300 is rotated outward with respect to the axis 352 when the link member 350 is rotated, and when the card blade 10 or the wallpaper 20 contacts one surface of the wallpaper 20, As shown in Fig.

Accordingly, the rotary blade member 300 is located on the outer side away from the cap member 200, and the lower portion is located at a lower level than the lower side of the cutter knife body 100.

5A, the rotary blade member 300 is formed with a protrusion 302 having a concavo-convex shape on the outer circumferential surface thereof. The protrusion 302 has a substantially quadrangular shape, and has a triangular and trapezoidal shape as shown in FIGS. 5B and 5C As shown in FIG.

In the first embodiment of the multifunctional cutter knife having the above-described structure, when the knob 120 connected to the blade 110 is normally slid along the guide rail 105 to the tip end side of the cutter knife body 100, The end of the cutter knife body 110 is pulled outward from the front end of the cutter knife body 100.

Thereafter, the user applies a force while holding the cutter blade 110, which is pulled out while holding the cutter knife body 100, to the cut material to be cut, thereby performing the cutting function of the cutter knife.

When the multi-function cutter knife of the present invention is used for bending the corrugated cardboard 10 or the wallpaper 20, referring again to FIG. 4, the link member The rotary blade member 300 inside the cap member 200 is rotated via the link member 350 and the shaft 352 and the rotary blade member 300 is rotated by the cap member 200 via a pin 310 at the end of the link member 350. [

6, when the protruding portion 302 is brought into contact with one side of the corrugated board 10 or the wallpaper 20 and then the cutter knife body 100 is pulled, the rotary blade member 300 is rotated The protrusions 302 are formed on one side of the corrugated cardboard 10 or the wallpaper 20 so that the cutouts 12 and 22 are formed.

At this time, the gap between the cut-away grooves 12 and 22 is changed according to the pitch (pitch) of the protrusions 302 of the cut-out grooves 12 and 22, .

Second Embodiment

7, the link member 350 and the shaft 352 are omitted, and the rotary blade member 300 is rotated in the opposite direction to that of the first embodiment, And the pin 310 is coupled to the end of the cap member 200 to be rotatable at a fixed position.

At this time, the pin 310, which is the center of the rotary blade member 300, is disposed below the center line of the cutter knife body 100 so that the rotary blade member 300 is positioned lower than the cutter knife body 100 .

The rotary blade member 300 of the second embodiment contacts the rotary blade member 300 to one side of the corrugated cardboard 10 or the wallpaper 20 while the user holds the cutter knife body 100, When the main body 100 is pulled in one direction, the rotary blade member 300 is rotated via the fin 310 so that the respective protrusions 302 are engaged with the cut-away grooves 12, 22 ).

Third Embodiment

8A and 8B, unlike the first and second embodiments, the rotary blade member 300 is connected to the cap member 200 via the drawing means, As shown in Fig.

The pulling means is configured such that the rotary blade member 300 is rotatably coupled to the end of the cap member 200 so as to be rotatable by the pin 310 and the pin member 310 is slidably moved and fixed to both sides of the cap member 200 And a spring member 320 is connected to the pin 310 so as to provide an unidirectional elastic biasing force with a tensile force, do.

More specifically, the movable rail 210 is formed to be pierced on both sides of the cap member 200, and first and second fixing grooves 212 and 214 are formed on one side and the other side, respectively, so as to have a lower jaw.

That is, the pin 310 in the normal state is positioned to be received in the first fixing groove 212, and is interfered with the step portion of the first fixing groove 212 to restrict the forward and backward movement.

Meanwhile, when the rotary blade member 300 is pulled out to the outside, the drawing means of the present invention lifts the pin 310 located in the first fixing groove 212 upward and releases it from the first fixing groove 212 When the pin 310 is placed in the second fixing groove 214 after the sliding of the pin 310 toward the second fixing groove 214 along the moving rail 210, When the pin 310 is positioned in the second fixing groove 214, the spring member 320 is stretched and the second fixing member 310 is fixed by the tensile force of the spring member 320. Therefore, It is possible to prevent deviation from the groove 214.

When the pin 310 is positioned in the second fixing groove 214, the rotary blade member 300 is pulled outward so that the corrugated cardboard 10 or the wallpaper 20 The sheath grooves 12 and 22 can be formed on one surface.

8A, when the rotary blade member 300 is lifted up from the second fixing groove 214 after the fin 310 is completely used, the rotary blade member 300 is rotated by the restoring elastic force of the spring member 320 The pin 310 is returned to the first fixing groove 212 after sliding along the moving rail 210 so that the lower part of the rotary blade member 300 is projected to the cap member 200 opened to the lower side Lt; / RTI >

The embodiments of the present invention described above have a useful advantage that they can easily form not only the original cutting function of the cutter knife but also the cutout grooves 12 and 22 for forming the bending portions of the corrugated cardboard 10 and the wallpaper 20 .

In the first and third embodiments of the present invention, the rotary blade member 300 is housed in the cap member 200 in a state where the rotary blade member 300 is partially protruded. When the rotary blade member 300 is used for main operation, It is possible to prevent damage to the rotary blade member 300 when the external impact is transmitted to the rotary blade member 300, which is relatively thinner than the cutter knife body 100, It is possible to prevent a safety accident caused by the user's fingers being caught in the door 300.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: Cardboard 20: Wallpaper
12, 22: Sheath groove 100: Cutter knife body
105: guide rail 110: blade
120: handle 200: cap member
205: receiving groove 205a:
210: moving rails 212, 214: first and second fixing grooves
300: rotating blade member 302:
310: pin 320: spring member
350: link member 352:

Claims (5)

A cutter knife body (100) having a guide rail (105) having a front end and a rear end opened and a handle (120) slidably moved on one side of the cutter knob (100);
A cap member 200 detachably coupled to a rear end of the cutter knob body 100 to support the blade 110; And
A protrusion 302 is formed on an outer circumferential surface of the cap member 200 and is rotatably operated when the cap member 200 is in contact with one side of the cardboard 10 or the wallpaper 20, And a rotary blade member (300) for forming shear grooves (12, 22) on one side of the corrugated cardboard (10) or wallpaper (20)
The rotation means includes a locking protrusion 205a that opens downward to receive the lower portion of the rotary blade member 300 protruded from the cap member 200 and restricts a rotation angle of the link member 350 at an end thereof, And the other end of the link member 350 is coupled to the pin 310 so that the rotary blade member 300 is rotatable. The other end of the receiving groove 205 is coupled to the end of the cap member 200, ). ≪ / RTI > The method according to claim 1,
Characterized in that the rotary blade member (300) is formed such that the outer peripheral edge thereof is thinner toward the end. The method according to claim 1,
Characterized in that the protrusion (302) formed on the outer circumferential surface of the rotary blade member (300) is a protrusion (302) of any shape selected from a triangular, rectangular or trapezoidal shape. A cutter knife body (100) having a guide rail (105) having a front end and a rear end opened and a handle (120) slidably moved on one side of the cutter knob (100);
A cap member 200 detachably coupled to a rear end of the cutter knob body 100 to support the blade 110; And
A protrusion 302 is formed on an outer circumferential surface of the cap member 200 so as to be drawn out to the outside through a drawing means through a drawing means and is rotated while contacting with one side of the corrugated cardboard 10 or wallpaper 20, And a rotary blade member (300) for forming sheath grooves (12, 22) on one side of the corrugated cardboard (10) or wallpaper (20)
The pulling means is coupled to the cap member 200 opened to the lower side such that the rotary blade member 300 is rotatably connected to the pin 310. Sliding sliding surfaces of the pins 310 are formed on both sides of the cap member 200, A movable rail 210 having first and second fixing grooves 212 and 214 formed so as to be able to move and fix a position and a spring member 320 connected to the pin 310 to apply an elastic biasing force in one direction,
When the rotary blade member 300 returns to the first fixing groove 212, a lower part of the rotary blade member 300 is received in the cap member 200, which is opened downward. Cutter knife. The method of claim 4,
The rotary blade member 300 may be formed to have a thinner thickness along the edge of the outer peripheral surface and a protrusion 302 formed on the outer peripheral surface of the rotary blade member 300 may have a shape selected from a triangular, Is a protruding portion (302) of the cutter (302).

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