JP3114506U - Cutter - Google Patents

Abstract

There is no conventional cutter that effectively protects the hand opposite to the hand holding the handle during the operation of cutting paper sheets.
A cutting device having a paper pressing bar 19 that moves up and down substantially horizontally in conjunction with the vertical movement of a movable blade 13 and having a side horizontal edge parallel to the paper pressing bar 19 on the side surface of the paper pressing bar 19. A substantially triangular safety cover 2 having an inclined side edge parallel to the cutting edge of the movable blade 13 at the upward movement position of the movable blade 13 and a curved side edge equal to the movement locus on the handle side of the movable blade 13 is attached.
[Selection] Figure 1

Description

The present invention relates to a cutter for cutting paper, and more specifically, a hand opposite to the hand holding the handle of the cutting blade on the cutting blade during the cutting operation touches the cutting blade during the cutting operation to cause injury. The present invention relates to a cutting device having a structure in which a safety cover for preventing the cutting is attached to a paper pressing bar, and a safety cover to be attached to the paper pressing bar of the cutting device.

  Patent Document 1 shows a configuration in which a cover is attached so as not to be injured by touching a cutting blade. The cover is a highly safe cutting blade that still covers the cutting edge of the cutting blade even during cutting, and a cutter equipped with the cutting blade. A cutting blade with a cover that is used by pivotally attaching one side edge side to a table of a cutting device for cutting a cutting object, the cover being attached to the cutting blade and a lower portion from the mounting portion A side surface of the cover that is in close contact with the side surface of the cutting blade at the mounting portion, and a tip edge of the extended portion is spaced from the cutting edge of the cutting blade by a predetermined distance. There is disclosed a configuration of a cutting blade for a cutter that cuts paper or the like with the cover attached to the cutting blade so as to extend to the position below the blade edge.

In Patent Document 2, there is a handle having a receiving blade attached to one side edge of a table, and a pivot shaft provided at a proximal end portion of the receiving blade, and a handle having a loop-like grip portion elongated in the front-rear direction. In the paper cutter that can be cut by pivoting the attached band-shaped cutting blade, the handle has the grip portion in the upper position and the attachment piece portion in the lower position, and the attachment piece portion is a band. An upper pressure receiving surface and a front end surface corresponding to the upper surface and the front end surface of the tip of the plate-shaped cutting blade, respectively, and an upper pressure-receiving surface of the recess on the upper surface of the tip of the strip-shaped cutting blade; Is attached to the tip of the strip-shaped cutting blade, and the upper pressure receiving surface receives the reaction force against the pressing force of the handle, and the front end surface of the grip portion is Attach the grip to the strip-shaped cutting blade so that it is at the same longitudinal position as the front edge of the table. The paper handle with excellent safety and strength can be made compact as a whole, and the handle with the above structure can be made compact, and an upright part is formed on the upper surface of the paper holding piece attached to the base plate via a hinge. Is disclosed.
JP-A-2005-7554 Japanese Utility Model Publication No. 6-41834

  However, the cutting device disclosed in Patent Document 1 includes a cover including an attachment portion and an extending portion extending downward from the attachment portion on one side surface of the cutting blade constituting the cutting device. The cutting edge is in close contact with the one side surface, and the leading edge of the extending portion is spaced apart from the cutting edge of the cutting blade so as to extend to a position below the cutting edge. The cover is attached to the cutting blade, and the cover must be attached to the outside of the cutting blade because of its structure, and it can prevent the operator's hand from touching the blade edge from the outside. That is, the hand on the side different from the hand on which the operator grips the grip is easier to touch the blade edge. In this case, the cover cannot be pushed from the inside to the outside to prevent the hand or the like from touching the blade edge.

  In addition, the height of the upright piece described in Patent Document 2 is much lower than the position where the strip plate-like cutting blade can be moved upward. In a normal cutting operation, since it is lifted upward, the height of the upright piece does not perform a protective function at all, and becomes bulky when stored.

The cutting device of the present invention and its safety cover are intended to safely protect the hand opposite to the hand holding the handle attached to the movable blade in the entire range of vertical movement of the movable blade during the paper cutting process. The purpose is to provide a cutter and its safety cover.

  That is, the cutting device of the present invention as a means for solving the above-mentioned problem is that a fixed blade is attached to one side surface of a base plate, a movable blade is pivotally attached to a side surface near the tip of the fixed blade, and a base portion of the fixed blade A stopper pin that receives the movable blade is provided on a side surface, and a first swing rod that is pivotally attached to the fixed blade and provided with a counterclockwise turning force by a pulling spring is provided opposite to the pin. A coil spring is provided on the bolt, and a second rocking rod having a bolt to which a counterclockwise turning force is applied by the elasticity of the spring is pivotally attached to the bolt, and the first rocking rod and the first rocking rod are Two swing rods are respectively connected to the paper pressing bar by pivots, a horizontal side edge parallel to the paper pressing bar is provided on a side surface of the paper pressing bar, and a tip of the movable blade at the upward movement position of the movable blade. Curves equal to the parallel inclined side edges and the movement trajectory on the handle side of the movable blade described above A substantially triangular safety cover having an edge is attached, and when the movable blade moves upward, the upper edge of the movable blade pushes up the bolt to lift the paper push bar against the elasticity of the spring. The paper push bar is pressed against the cut paper before the movable blade by the elastic force of the spring through the second swing rod by the downward movement of the blade.

  The safety cover includes a horizontal side edge parallel to the paper pressing bar, a tip of the movable blade at the upward movement position of the movable blade, an inclined side edge parallel to the upper side, and a movement locus on the handle side of the movable blade. A plurality of mounting notches that can be attached to and detached from the paper pressing bar are formed on the horizontal side edge parallel to the paper pressing bar.

  Furthermore, the safety cover was formed of a transparent synthetic resin plate so as not to obstruct the field of view during work.

The cutting device according to claim 1, wherein a fixed blade is attached to one side surface of the base plate, a movable blade is pivotally attached to a side surface near the tip of the fixed blade with a bolt, and the movable blade is received on a base side surface of the fixed blade. A stopper pin is protruded, and a first rocking rod that is pivotally attached to the fixed blade by the pulling spring and provided with a counterclockwise turning force is provided on the pin, and a coil spring is provided on the bolt. The second rocking rod in which the bolt to which the counterclockwise turning force is applied by the spring force is implanted is pivotally attached to the bolt, and the first rocking rod and the second rocking rod are connected to each other. Each pivot is connected to a paper pressing bar, a horizontal side edge parallel to the paper pressing bar on the side surface of the paper pressing bar, an inclined side edge parallel to the blade edge of the movable blade at the upward movement position of the movable blade, and Safety cover having a substantially triangular shape having a curved side edge equal to the movement locus of the movable blade on the handle side The upper edge of the movable blade pushes up the bolt to lift the paper push bar against the elasticity of the spring, and the lower motion of the movable blade moves the paper push bar. Since the spring is configured to be pressed onto the cut paper before the movable blade through the second swing rod, the hand on the opposite side to the hand holding the handle attached to the movable blade is used. It is possible to safely protect the entire range of the movable blade in the vertical movement range during the paper cutting process. Further, since the safety cover can be attached to and detached from the paper pressing bar, there is an effect that the safety cover becomes compact when stored.

  The safety cover according to claim 2 includes a horizontal side edge parallel to the paper pressing bar, a cutting edge of the movable blade at the upward movement position of the movable blade, an inclined side edge parallel thereto, and a handle side of the movable blade. A plurality of mounting cutouts that can be attached to and detached from the paper pressing bar are formed on a horizontal side edge parallel to the paper pressing bar in a substantially triangular shape having a curved side edge equal to the movement trajectory of the cutting device. It can be easily attached and detached, and there is no inconvenience in the cutting operation.

Since the safety cover according to the third aspect is formed of a transparent synthetic resin plate, the position of the movable blade can be easily confirmed.

As the cutter, a fixed blade is attached to one side surface of the base plate, a movable blade is pivotally attached to the side surface close to the tip of the fixed blade with a bolt, and a stopper pin that receives the movable blade is projected to the base side surface of the fixed blade. The pin is pivotally attached to the fixed blade, and is provided with a first swing rod to which a counterclockwise turning force is applied by a pull spring, and a coil spring is provided on the bolt. A second rocking rod having a bolt to which a counterclockwise turning force is applied by elasticity is pivotally attached to the bolt, and the first rocking rod and the second rocking rod are respectively pivoted on the paper. A side edge parallel to the paper pressing bar on the side surface of the paper pressing bar, a side edge parallel to the blade edge of the movable blade at the upward movement position of the movable blade, and a handle side of the movable blade Attach a substantially triangular safety cover having a curved edge equal to the movement trajectory of When the movable blade moves up, the upper edge of the movable blade pushes up the bolt to lift the paper push bar against the spring force of the spring, and the lower blade moves the paper push bar to the spring force. Thus, the paper push bar is configured to move up and down in parallel with the upper surface of the base plate so as to be brought onto the cut paper before the movable blade via the second swing rod.
The safety cover includes a horizontal side edge parallel to the paper pressing bar, a blade edge of the movable blade at the upward movement position of the movable blade, an inclined side edge parallel to the upper side, and a handle side of the movable blade. Consists of a transparent synthetic resin plate having a substantially triangular shape having a curved side edge equal to the movement trajectory and having a mounting notch formed on a horizontal side edge parallel to the paper pressing bar so as to be detachable from the paper pressing bar. To do.

The cutting device 1 has a similar structure to the cutting device described in Japanese Utility Model Publication No. 58-56159 previously proposed by the applicant. As shown in FIGS. 1 to 5 and FIG. A fixed blade 12 is attached to one side surface, and as shown in FIG. 6, the movable blade 13 is pivotally attached to the side surface close to the tip of the fixed blade 12 by a bolt 14a having a predetermined groove from the end portion, and the fixed blade 12 is fixed. A stopper pin 15 for receiving the movable blade 12 is provided on the side surface of the base portion of the blade 12, and as shown in FIG. 9, the pin 15 is pivotally attached to the fixed blade 12 and counterclockwise turning force is provided by a pull spring 16a. A first rocking rod 17a having a substantially toroidal shape is provided, and a coil spring 16b is provided on the bolt 14a. A bolt 14b to which a counterclockwise turning force is applied by the elasticity of the spring 16b. The second swing rod 17 having a substantially U-shape with the Is pivotally attached to the bolt 14a, and the first swing rod 17a and the second swing rod 17b are connected to the paper press bar 19 by the pivot shafts 18a and 18b, respectively, and the paper press bar 19 moves horizontally up and down. A four-joint mechanism is configured to obtain the movable blade at the side edge of the paper push bar 19 parallel to the paper push bar 19 and the upward movement position of the movable blade 13 as shown in FIGS. A substantially triangular safety cover 2 having a side edge parallel to the blade edge 13 and a curved edge equal to the movement locus of the movable blade 13 on the handle side is attached as shown in FIG. Then, the upper edge of the movable blade 13 pushes up the bolt 14c to lift the paper pressing bar 19 against the spring force of the spring, and the lower movement of the movable blade causes the paper pressing bar to move to the spring force of the coil spring 16b. By means of the second swing rod 17b. The paper pressing bar 19 is configured to move up and down while maintaining a substantially parallel state with respect to the upper surface of the base plate 11 so as to be lowered and pressed onto the cut paper before the moving blade 13.

  As shown in FIGS. 10 and 11, the safety cover 2 has a horizontal side edge 21 parallel to the side surface of the paper pressing bar 19 that is substantially the same length as the paper pressing bar 19 and an upward movement position of the movable blade 13. A curved side edge that is substantially the same as the length of the movable blade 13 and is equal to the movement trajectory of the edge on the handle 13a provided at the end of the movable blade 13 and the inclined side edge 22 parallel to the blade tip and the upper side thereof. 23 and has a substantially triangular shape having each edge of a vertical side edge 24 obtained by cutting the most acute end perpendicularly to the horizontal side edge 21, and the horizontal side edge 21 parallel to the paper pressing bar 19 I-shaped cutouts 25a and 25b for attachment are provided so that the screws 3a and 3b can be attached to and detached from the screws 3a and 3b screwed into screw holes provided on the side surface of the paper pressing bar 19 without completely removing the screws 3a and 3b. A structure in which a plurality of gaps L between the screw holes are formed. It is.

Further, the safety cover has a mechanical strength as shown in FIGS. 10 and 11, and is made of a transparent material such as an acrylic resin having a thickness of about 3 mm so as not to interfere with the cutting of the cut paper. It consists of a simple synthetic resin plate. In order to increase the attachment strength, the horizontal side edge 21 parallel to the paper pressing bar 19 and a certain width parallel to the horizontal side edge 21 are configured to be about 1.5 times thicker than other parts. If each edge of the inclined side edge 22, the curved side edge 23 and the vertical side edge 24 is chamfered, the operator's hand will not be injured even if it touches the edge.

  The cutting device according to the present invention is configured as described above, and the safety cover 2 is removed in advance from the side surface of the paper pressing bar 19 during packaging and storage. The screws 3a and 3b screwed in advance to the side surface of the push bar 19 are loosened, and the screws 3a are inserted into the notches from the openings of the notches 25a and 25b formed in advance on the horizontal side edge 21 of the safety cover 2. , 3b are inserted until they come into contact with both notch ends, the screws 3a, 3b are tightened with a tool such as a screwdriver to fix the safety cover 2 to the side surface of the paper push bar 19.

In use, the operator normally holds the handle 13a with the right hand and the handle 13a to cut the paper sheet P with the movable blade 13 in the downward movement position shown in FIG. As shown in FIG. 9, when the movable blade 13 is lifted up to the upward movement position necessary for cutting the paper sheet P, the movable blade 13 hits the pin 15 during that time and the counterclockwise turning force is applied by the coil spring 16b. The second rocking rod 17b is rotated clockwise.

  In this case, the bolt 14a rotates clockwise as the movable blade 13 rotates, and the coil spring 16b also rotates clockwise together with the bolt 14a. Therefore, the movable blade 13 does not feel a large load. As the arm portion of the second swing rod 17b rises, the arm portion of the first swing rod 17a rises against the pulling spring 16a by the paper push bar 19, and the paper push bar 19 is placed on the table. The plate 11 is pushed upward substantially horizontally from above.

  As the paper push bar 19 rises horizontally, as shown in FIG. 9, the safety cover 2 fixed to the side of the paper push bar 19 rises in the same manner, and the hand not holding the handle 13a, that is, the left hand is the base plate 11. Even if the paper sheet P to be cut is placed and the cutting position is determined by using a scale or the like, even if it is mistakenly moved toward the movable blade 13, the moving operation is performed by the safety cover 2 positioned in front of the movable blade 13. Is blocked and the left hand does not touch the movable blade 13.

  Next, as described above, the paper sheet P to be cut is placed on the base plate 11, the side to be cut is passed between the base plate 11 and the paper pressing bar 19, and the cutting position is determined using a scale or the like. When the hand holding the handle 13a is lowered from the position shown in FIG. 9 to the position shown in FIG. 8, the first swing rod 17a and the second swing rod 17b are moved by the pull spring 16a and the coil spring 16b. While rotating counterclockwise to press the vicinity of the paper sheet P to be cut to the base plate 11, the movable blade 13 is slightly delayed from the pressing operation to hold the paper sheet P to the fixed blade 12. Cut between.

  In conjunction with the cutting operation of the paper sheet P, the safety cover 2 also moves down as the paper pressing bar 19 moves downward as shown in FIG. 8, during which the operator mistakenly places his left hand on the movable blade 13 side. The safety cover 2 blocks it even if it is moved to prevent the left hand from touching the movable blade 13 completely.

  Since the safety cover 2 is made of an acrylic resin plate, this does not disturb the visual field and does not hinder the cutting operation. The safety cover 2 can be easily removed from the paper pressing bar 19 by slightly loosening the screws 3a and 3b, and the safety cover does not hinder storage during storage.

The front view of the cutter which shows the Example of this device. Similarly rear view. Similarly left side view. FIG. Similarly bottom view. Sectional drawing in the AA disconnection of FIG. The perspective view of the cutter of this invention. Explanatory drawing of the work state in which a movable blade is in a downward movement position. Explanatory drawing of the working state in which the movable blade is in the upward movement position. The front view of the safety cover of this device. Similarly rear view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutting device 11 Base plate 12 Fixed blade 13 Movable blades 14a and 14b Bolt 15 Stopper pin 16a Pull spring 16b Coil spring 17a First swing rod 17b Second swing rod 18a and 18b Axis 19 Paper press bar 2 Safety cover 21 Horizontal Side edge 22 Inclined side edge 23 Curved side edge 24 Vertical side edge 25a, 25b Notch

Claims (3)

  A fixed blade is attached to one side surface of the base plate, a movable blade is pivotally attached to the side surface close to the tip of the fixed blade with a bolt, and a stopper pin for receiving the movable blade is projected on the base side surface of the fixed blade. A first swing rod that is pivotally attached to the fixed blade and is provided with a counterclockwise turning force by a pulling spring is further provided, and a coil spring is provided on the bolt, and the spring is counterclockwise by the elasticity of the spring. A second rocking rod having a bolt to which a rotational force is applied is pivotally attached to the bolt, and the first rocking rod and the second rocking rod are respectively connected to the paper pressing bar by pivots. A horizontal side edge parallel to the paper push bar on the side surface of the paper push bar, an inclined side edge parallel to the cutting edge of the movable blade at the upward movement position of the movable blade, and a movement locus on the handle side of the movable blade. Mounted with a substantially triangular safety cover with curved side edges equal to The upper edge of the movable blade pushes up the bolt by the upward movement of the movable blade to lift the paper push bar against the elasticity of the spring, and the downward movement of the movable blade moves the paper push bar by the elasticity of the spring. A cutter that is configured to be pressed onto the cut paper before the movable blade through a second swing rod.   A horizontal side edge parallel to the paper pressing bar, a cutting edge of the movable blade at the upward movement position of the movable blade, an inclined side edge parallel to the upper side of the movable blade, and a curved side edge substantially equal to the movement locus on the handle side of the movable blade A safety cover characterized in that a plurality of notches for attachment that can be attached to and detached from the paper pressing bar are formed on a horizontal side edge parallel to the paper pressing bar.   A safety cover according to claim 1, wherein the safety cover is formed of a transparent synthetic resin plate.

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