JP2017051270A - Scissors with cutter function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide scissors with cutter function capable of reasonably improving sharpness when used as cutters.SOLUTION: Scissors with cutter function related to this invention, which are scissors configured to be capable of opening and closing a first blade and a second blade having edges to clip a cutting workpiece arranged between both edges and used as cutters with at least the tip part of the edge in the first blade pushed against the cutting workpiece, comprise posture guiding means for guiding a posture of the blade so that a bisection virtual plane assumed between the edge obverse and the edge reverse of the edge tip part may be orthogonal to the surface of the cutting workpiece.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a scissor that opens and closes a first blade having a blade and a second blade so as to squeeze a workpiece to be cut between the two blades.

  Conventionally, the first blade and the second blade having blades are opened and closed to scissor the object to be cut disposed between the two blades, that is, the blade lines of the two blades are opened. Scissors are known in which the object to be cut disposed between the two blades is squeezed between the open posture exposed in the state and the closed posture where the blade lines of the two blades are not exposed.

  And among such scissors, the cutter posture in which the blade edge of the blade of the first blade is exposed to the ridge side of the second blade by operating both blades from the open posture to the closed posture. A scissor capable of taking the above has also been proposed (see, for example, Patent Document 1). Such scissors change the posture to the cutter posture so that the cutting edge portion of the first blade is pressed against the workpiece while being a scissors, and the workpiece is cut by a cutter knife (hereinafter referred to as a cutter). Can be cut as follows.

  In the past, even with scissors that cannot take the cutter posture, some users have performed an operation of directly pressing the scissors portion of any blade against the object to be cut.

JP 2006-230733 A

  Here, when the scissors are used as the cutter posture as described above, or when any blade is pressed directly against the object to be cut, the user usually holds the entire scissors as when using the cutter. The object to be cut is cut by holding and cutting the blade tip portion of any blade against the object to be cut.

  However, in the conventional scissors including the scissors described in the above-mentioned patent document, the blades of each blade generally have a so-called single-edged shape. That is, the blade back surface of each blade is continuous with the back surface of the blade, and the blade surface is inclined with respect to the surface of each blade, and the blade back surfaces of both blades are in sliding contact with each other to function as scissors. To come to show.

  When such a scissors blade is used as a cutter, if no measures are taken, the user usually performs a cutting operation by pressing the blade vertically against an object to be cut. Therefore, the blade comes into contact with the workpiece while being tilted in the rolling direction, and there is a problem that the performance as a cutter cannot be sufficiently exhibited.

  Even in the case of scissors having blades in other forms, the user often cannot recognize the posture of the blade tip portion when used as a cutter. Therefore, the sharpness when the blade is used as a cutter in contact with the workpiece in an inappropriate posture is often impaired.

  This invention pays attention to such a problem, and it aims at providing the scissors with a cutter function which can improve the sharpness at the time of using as a cutter reasonably.

  In order to achieve such an object, the present invention takes the following measures. That is, the scissors with a cutter function according to the present invention are configured to open and close the first blade having the blade and the second blade so that the object to be cut disposed between the two blades can be squeezed. Scissors that can also be used as a cutter by pressing the cutting edge portion of the blade in the first blade against an object to be cut, and when used as a cutter, the blade surface of the cutting edge portion and the blade back surface It is characterized by comprising posture guiding means for guiding the posture of the blade so that a bisected virtual plane assumed in between is orthogonal to the surface of the workpiece.

  If it is a thing of such composition, when using it as a cutter, the above-mentioned bisection virtual plane assumed between the blade surface of the blade edge part and the blade back surface is orthogonal to the surface of the object to be cut. The posture of the blade is guided. Therefore, it is possible to prevent or suppress the problem that the blade comes into contact with the workpiece in an inappropriate posture, and it is possible to efficiently exhibit the performance as a cutter.

  As an example of posture guidance means that is easy for the user to handle, the posture guidance means includes an operation unit for the user to operate when using it as a cutter, and the operation unit corrects the posture of the blade. The aspect which is shape | molded in the suitable shape can be mentioned.

  In order to be able to handle scissors in the cutter posture accurately without the user being conscious of it, it is equipped with a pressing operation surface for the user to apply operating force when using the operation unit as a cutter. It is desirable that the direction of the pressing operation surface be orthogonal to the bisected virtual surface.

  In order to realize the above-mentioned effect with a simple configuration, the blade tip portion of the blade of the first blade is configured to be able to take a cutter posture that is exposed to the blade peak side of the second blade when used as a cutter. For the scissors, it is preferable that the operation portion is provided with a pressing operation surface on a blade guard provided on the edge of the first blade.

  Further, as an example of the posture changing means other than the above-described mode, a mode in which the posture guiding unit includes a sliding contact surface that slidably contacts the surface of the object to be cut or a surface parallel to the surface to correct the posture of the blade. Can be mentioned.

  In addition, in order to improve the usability in the cutter posture without changing any shape from the conventional scissors, the posture guiding means is placed in a bisected virtual surface at a part that can be visually recognized by the user using the cutter. It is desirable to provide an inclination display element for recognizing the inclination of the image.

  Further, as another mode for configuring the posture guiding means, the posture guiding means has a sensor for detecting the inclination of the bisected virtual surface, and this sensor sets the inclination of the bisected virtual surface to a predetermined value. An aspect provided with a notification element that informs the user of the fact that the target has been reached can be mentioned.

  That is, as described above, the posture guiding means according to the present invention includes the following.

  First, the posture guiding means can be classified into (1) those that are dynamically guided by the form, and (2) those that are guided to the user by visual or other senses.

The following forms are included as specific examples of (1) what is dynamically induced by the form.
(1-1) A configuration in which a pressing operation surface is provided on the edge of the first blade, and the direction of the pressing operation surface is made to bisect the virtual surface: In this configuration, the cutting edge portion has a double-edged shape. It does not matter whether it has a single-edged shape.
(1-2) Form of twisting the handle with respect to the blade: Here, “twisting” does not mean that the handle is simply tilted, but the tilt of the first blade is appropriate when the user naturally holds the handle. The form which becomes. In the case of this form, it is a premise that the cutting edge portion is a single blade or a double-edged blade whose cross section is asymmetric. If the cutting edge part is a double-edged blade whose cross section is symmetrical, it is not a target.
(1-3) Form in which any part is provided with a slidable contact surface that can slidably contact the surface of the object to be cut: Specifically, the following (1-3-1) to (1-3-4) Etc.
(1-3-1) Form in which a sliding contact surface capable of sliding contact with the surface of an object to be cut is provided on the cutting edge side of the first blade: the first blade by making the direction of the sliding contact surface appropriate Guide the angle of.
(1-3-2) A form in which the sliding contact surface is provided on the edge of the second blade.
(1-3-3) A configuration in which a slidable contact surface corresponding to a ruler to be used is provided on the edge side of the second blade.
(1-3-4) a handle provided with the sliding surface on the side form: Of course in此所, the rubbing surface is not be specified in a fixed plane as the wheels and rollers fixed orientation You may apply.

On the other hand, the following forms are included as specific examples of (2) the user's visual sense and other sensations.
(2-1) A visual guide such as providing a marker, that is, a guide that can be guided to an appropriate direction by informing the user of the orientation of the blade using a marker or the like: (2-1-1), (2-1-2) and the like.
(2-1-1) A guide provided on the edge of the first blade and a marker made of a point or a line on the guide: more specifically, a pressing operation surface having a semi-cylindrical shape on the guide And a marker provided at an appropriate position on the pressing operation surface and a place to be pressed. Specifically, when the cutting edge portion is a single blade, the shape of the cutting edge is not limited, but when the marker is, for example, a cylindrical surface, the marker is provided at a position slightly shifted from the apex. When the cutting edge portion has a double-edged shape having a symmetrical shape in cross section, a marker is provided at the apex.
(2-1-2) Two markers are provided at spaced apart sites, and the appropriate orientation of the blade is known from the visual relative position of these markers.
(2-2) A device that guides the position to be pushed by the shape of the blade without providing a marker. For example, when the cutting edge portion is in a form of a double-edged shape having a symmetrical shape in cross-section, if the cutting edge side is set to a cylindrical surface, for example, the cylindrical surface itself is considered to function as a posture guiding means. That is, when the cylindrical surface is pressed, the vertex is naturally pressed.
(2-3) A blade or a guide provided on the blade is provided with a through-hole, and the direction of the through-hole is devised and guided: Specifically, the direction in which the user can see through the through-hole is appropriate The one that is in the right direction.
(2-4) A specific surface that can be visually recognized is bisected and parallel to the virtual surface: That is, a specific surface may be provided on all or part of the blade surface. Here, a part may be a protrusion provided with a specific surface on the outer surface of the protrusion, or a specific surface on the side surface of the guide. Of course, this particular surface may be provided on the handle.
(2-5) Providing a dent such as a hole or slit and providing a marker on the bottom surface thereof: The direction in which this marker can be visually recognized is set to an appropriate direction.
(2-6) A device that functions as a level (level): For example, in the case of a bubble tube level, an appropriate direction can be known at the position of the bubble.
(2-7) A sensor is provided and emits light so as to be understood by the user when it is turned to an appropriate direction.
(2-8) A device that emits sound and vibrations so that the user can understand it by providing a sensor and turning it in the proper direction.

  ADVANTAGE OF THE INVENTION According to this invention, the scissors with a cutter function which can improve the sharpness at the time of using as a cutter reasonably can be provided.

The perspective view which concerns on one Embodiment of this invention. The front view. Operation | movement explanatory drawing which concerns on FIG. The enlarged view of the principal part concerning FIG. FIG. 5 is a cross-sectional view taken along line AA according to FIG. 4. The exploded perspective view concerning the embodiment. The other exploded perspective view concerning the embodiment. The figure which shows the operation | movement which concerns on the same embodiment as a table | surface. Explanatory drawing which concerns on the modification of the embodiment. Explanatory drawing which concerns on the other modification. Same as above.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  Scissors with a cutter function (hereinafter referred to as scissors) A according to the present embodiment, for example, by opening and closing the first blade 1 as a first blade having a blade and the second blade 2 as a second blade, A sheet-like material such as paper S, which is an object to be cut, disposed between the two blades 11 and 21 is cut off.

  In addition to the first blade 1 and the second blade 2, the scissors A include a first handle 3 and a second handle 4 provided in regions 1c and 2c on the base end side of both the blades 1 and 2, and an intermediate region. It has a pivot pin 6 that pivots both the blades 1 and 2 at 1b and 2b, and a blade guard 7 attached to a region 1a on the tip side of the first blade 1.

  Thus, the scissors A according to the present embodiment is scissors A that can be used as a cutter by pressing at least the cutting edge portion 17 of the blade of the first blade 1 against the paper S that is an object to be cut, and is used as a cutter. At the same time, posture guidance for guiding the posture of the blades 1 and 2 so that the bisected virtual surface X assumed between the blade surface 15 and the blade back surface 16 of the blade edge portion 17 is orthogonal to the surface of the workpiece. A blade guard 7 as means is provided.

  The scissors A include a mode switching mechanism 5 provided between the first handle 3 and the second handle 4 so that the blade line 12 of the first blade 1 protrudes from the cutting edge 24 of the second blade 2. In the closed posture (R1) where the blade line 22 of the second blade 2 does not protrude from the ridge 14 of the first blade 1, the open posture (Q1) exposed when the blade lines 12, 22 of the both blades 11, 21 are opened. Scissor mode (Q) in which the blades 1 and 2 can be opened and closed only during the period up to and the cutter posture (at least the cutting edge portion 17 of the blade of the first blade 1 is exposed to the blade peak 24 side of the second blade 2) It is configured to be able to select either a cutter mode (P) that allows P1) or a lock mode (R) that locks both blades 1 and 2 in the closed posture (R1). .

  In addition, as shown in FIG. 3, the scissors A can contact the paper S as the object to be cut in the most suitable posture when the blade guard 7 is pressed with the index finger in the cutter mode (P). it can. Hereinafter, each component of scissors A is demonstrated concretely.

  As shown in FIGS. 1 to 7, the first blade 1 is made of a metal plate such as a stainless steel plate, for example, and this embodiment is formed by pressing. The first blade 1 is located above when the paper S or the like is cut. In the present embodiment, the first blade 1 is an intermediate region between the distal end region 1 a having the blade 11 and the proximal region 1 c provided with the first handle 3 for opening and closing the blade 11. In FIG. 1b, it is pivotally connected to the second blade 2 via a pivot pin 6. The blade 11 provided in the region 1a on the front end side includes a blade back surface 16 that is slidable and flat with the second blade 2, an outer surface that is a surface facing the first blade 1, that is, a blade surface 15, and these blades. And a blade line 12 formed between the back surface 16 and the blade surface 15. In this embodiment, the total length of the blade line 12 is set to about 70 mm, for example. The blade angle in the blade line 12 between the blade back surface 16 and the blade surface 15 may be arbitrarily set in the range of 40 ° to 50 °, but is set to about 50 ° in the present embodiment, for example. The first blade 1 further includes a blade peak 14 formed at an edge opposite to the blade line 12 and a blade edge portion 17 located at the tip. In the present embodiment, the blade guard 7 is attached to the blade peak 14 on the proximal end side with respect to the blade edge portion 17. A first handle 3 is attached to a region 1 c on the proximal end side of the first blade 1. In addition, the first blade 1 has at least the shape of the tip in the vicinity of the cutting edge portion 17 to prevent the cutting edge portion 27 of the second blade 2 from being exposed to the edge 14 in any state during use. The size of the blade back surface 16 in the short dimension direction is set larger than that of the second blade 2 in order to obtain a shape that can be formed.

  The second blade 2 is inserted below the paper S. Like the first blade 1, the second blade 2 is a plate-shaped member formed by press-molding the whole using a metal plate made of stainless steel as a raw material. The thickness dimension of this metal plate is arbitrary, and is set to about 1.8 mm in this embodiment, for example. The second blade 2 has a pivot pin 6 in an intermediate region 2b between a distal end region 2a having a blade 21 and a proximal region 2c provided with a second handle 4 for opening and closing the blade 21. Is pivotally connected to the first blade 1 via The blade 21 provided in the region 2a on the tip side includes a blade back surface 26 that is slidable and flat with the first blade 1, an outer surface that is a surface facing the first blade 1, that is, a blade surface 25, and these blades. And a blade line 22 formed between the back surface 26 and the blade surface 25. In this embodiment, the total length of the blade line 22 is set to about 70 mm, for example. In this embodiment, the blade angle in the blade line 22 between the blade back surface 26 and the blade surface 25 is set to about 50 °, for example. Further, the blade 21 includes a blade peak 24 formed on the side edge opposite to the blade line 22, a blade edge portion 27 located at the tip, and a recessed portion formed by recessing the blade peak 24 of the blade edge portion 27. 28. That is, by forming the recessed portion 28, the second blade 2 has a tip shape for allowing the cutting edge portion 17 of the first blade 1 to be exposed to the cutting edge 24 side. In addition, in this embodiment, if a ruler is applied to the lower surface of the recessed portion 28, the paper S is set to a shape that can be cut in a straight line when used as the cutter posture (P 1).

  The first handle 3 is mainly composed of a handle main body 31 in which a region 1c on the proximal end side of the first blade 1 is inserted and attached to the front end side. The handle main body 31, the index finger of the user, and the middle finger Or a finger hook 32 for holding the ring finger, a guide recess 33 for promoting a smooth opening / closing operation in cooperation with the second handle 4, and a pin 55 to be described later protruding from the second handle 4 side. A pin accommodating portion 35. In the present embodiment, for example, the first handle is integrally formed of, for example, hard resin. Of course, only the portion constituting the finger hook 32 is made of a separate soft resin so that it can be easily fitted by the user's fingers. Does not disturb the embodiment. The first handle 3 has a substantially symmetrical shape with respect to the second handle 4, but may be asymmetric.

  The second handle 4 is mainly composed of a handle main body 41 in which the base end side region 2c of the second blade 2 is inserted and attached to the front end side, and the handle main body 41 and the user's thumb are hung. It has a finger hook 42 for holding it and a sliding ridge 44 for promoting a smooth opening and closing operation in cooperation with the first handle 3. That is, when both the blades 1 and 2 perform the opening and closing operation, the sliding protrusion 44 slides in the guide recess 33 of the first handle 3 for a smooth opening and closing operation of the both blades 1 and 2. Has contributed. The outer shape of the second handle 4 is such that it does not protrude significantly from a virtual extension line in the direction in which the cutting edge 14 of the first blade 1 extends. By forming the outer shape of the second handle 4 into a gentle curved shape close to a straight line as described above, the second handle 4 can be held by a hand when holding the cutter knife as shown in FIG. Fits the palm of your hand moderately. In addition, it is possible to smoothly switch between the modes shown in the figure after use in the scissors mode (Q).

  As shown in FIGS. 3 to 5, the blade guard 7 is arranged from the blade tip 14 side on the most proximal side of the blade 11 extending slightly from the proximal end side to the vicinity of the pivot pin 6 than the cutting edge portion 17 of the first blade 1. It is attached so as to cover about one third of the short dimension of the blade surface 15 and the blade back surface 16. The blade guard 7 is set to a size that is not too large so that the user can see the object to be cut such as the paper S over the blade guard 7 when using in the scissor mode (Q). Accordingly, even when the blade guard 7 is used in the scissors mode (Q) while being positioned above the paper S, the blade guard 7 does not get in the way. This means that when the scissors A are changed from the scissors mode (Q) to the cutter mode (P), the scissors A can be quickly changed without being turned upside down. Of course, in order to further improve the visibility of the paper S in the scissors mode (Q), the size of the blade guard 7 may be further reduced. Further, the blade guard 7 is formed so as not to hurt even if it is pressed with an index finger so as to avoid that the finger hurts if the finger is placed directly on the blade peak 14 and pressed. The thickness dimension of the blade guard 7 is set to be approximately the same as or slightly larger than the thickness dimension of the first handle 3 and the second handle 4. The blade guard 7 has a pressing operation surface 71 that is a flat surface formed at one end of the first blade 1 and the thickness of the blade 21 of the second blade 2 at the other edge on the blade back surface 16 side of the first blade 1. And a guard surface 72 formed so as to protrude to a large thickness. By providing this guard surface 72, when the user puts his / her finger on the edge 14 side of the first blade 1, the blade line 22 of the second blade 2 does not hit the finger regardless of the posture of the scissors A. . Specifically, since the guard surface 72 is positioned close to the blade line 22 of the second blade 2 when the guard surface 72 is in the closed posture (R1) and the cutter posture (P1), the user can use these postures. It is impossible to touch the blade line 22 of the second blade 2 facing the guard surface 72. In this embodiment, the blade guard 7 is made of a resin material that is different from the material of the first blade 1. For example, the same material as the first blade 1 may be used. In that case, the blade guard 7 may be provided by press-molding a part of the first blade 1 on the edge 14 side to be a flat surface.

  The pressing operation surface 71 is a plane having an angle inclined closer to the blade surface 15 by, for example, about 25 ° than the end surface of the cutting edge 14 of the first blade 1. The blade guard 7 having the pressing operation surface 71 corresponds to the posture guiding means. The handling of scissors A in the cutter mode (P) using the blade guard 7 as the posture guiding means will be described later.

  In this embodiment, the mode switching mechanism 5 is provided between the first handle 3 and the second handle 4 in the regions 1c and 2c on the base end side of the first blade 1 and the second blade 2. The mode switching mechanism 5 adjusts the position of the operating element 51 slidably attached to the second handle 4 so that the scissor mode (Q), the cutter mode (P), and the lock mode (R) are set as described above. It can be switched arbitrarily. Hereinafter, the configuration of the mode switching mechanism 5 will be described with reference to FIGS. 1 to 3 and FIGS. 6 to 8.

  The mode switching mechanism 5 includes an actuator 51 slidably provided on the second handle 4, an engagement portion 52 that engages with the actuator 51 and allows or restricts relative movement with respect to the first handle 3, It has a slide guide portion 53 that supports the actuator 51 so that the child 51 can be positioned at a required position.

  The slide guide portion 53 is formed integrally with the actuator 51 side and protrudes toward the second handle 4 side, and is provided in a slit shape on the second handle 4 side so that the first attachment claw 53a can slide. A first slide groove 53b to be supported, a second attachment claw 53c formed integrally with the actuator 51 and at a position facing the first attachment claw 53a, and a second that can slide and position the second attachment claw 53c. And a slide groove 53d. The second mounting claw 53c has a moderation protrusion 53e that protrudes toward the second slide groove 53d. The second mounting groove has a moderation recess 53f that can be concavo-convexly fitted to the moderation ridge 53e at three locations near both ends on the inner surface side and at the center. And by this slide guide part 53, the operating element 51 has a high precision by fitting the resin material in a concave and convex manner at an accurate position corresponding to the cutter mode (P), the scissors mode (Q), and the lock mode (R). A moderation mechanism is realized.

  The actuator 51 includes a slide operation body 51a that receives an operation force from a user's finger, a plate spring 54 that is an elastic biasing member that extends in a plate shape with the slide operation body 51a as a base end, and is elastically deformable. A pin 55 having a substantially cylindrical shape is provided at the tip of the leaf spring 54. The slide operation body 51a has fine irregularities on the surface so that it can receive an operation force from the user's fingers without slipping. The leaf spring 54 can be allowed and prohibited from elastic deformation depending on the position of the slide operation body 51a. In the present embodiment, the leaf spring 54 is configured to be elastically deformable only in the cutter mode (P). ing. The pin 55 protrudes further from the tip of the leaf spring 54 to the first handle 3 side. The protruding end of the pin 55 is accommodated in the pin accommodating portion 35 and the guide recess 33 on the first handle 3 side, and when the protruding end of the pin 55 is located at the cutter portion and the lock portion of the pin accommodating portion 35. The operation of the first handle 3 with respect to the pin 55 is prohibited.

  The engaging portion 52 is for engaging the operating element 51 to switch between the scissors mode (Q), the cutter mode (P), and the lock mode (R). The engaging portion 52 includes a regulating portion 56 that engages with the actuator 51 so as to prohibit both the blades 1 and 2 from taking an open posture (Q1) in the cutter mode (P), and a closed posture in the scissors mode (Q). The blades 1 and 2 are locked in the lock mode (R) and the open / close permission portion 57 that engages with the actuator 51 so that the blades 1 and 2 can open and close only during the period from (R1) to the open posture (Q1). It has a lock portion 58 and a deformation allowing portion 59 that allows the operation of the pin 55 accompanying the posture change from the closed posture (R1) to the cutter posture (P1). The restriction portion 56 has a restriction slit 56 a that can be accommodated so as to sandwich the leaf spring 54. The openable / closable portion 57 has a pin support surface 57a that can prohibit relative movement between the pin 55 and the second handle 4 by coming into contact with the pin 55 in the scissors mode (Q). The lock portion 58 has a pin fixing surface 58a formed by being recessed into a partial cylindrical surface that can be fitted on the outer surface of the pin 55 in the lock mode (R) at the edge of the restriction slit 56a. The pin 55 in contact with the pin fixing surface 58a is in a state where it cannot operate with respect to the second handle 4 because the leaf spring 54 is accommodated in the restriction slit 56a. The deformation allowing portion 59 is provided by denting a material constituting the second handle 4 so as to form a gap only on one side when the pin 55 is set to the cutter mode (P). That is, the pin 55 in the cutter mode (P) can be elastically deformed only in the direction toward the deformation-permitted portion 59, so that relative movement between the pin 55 and the second handle 4 is permitted.

  Next, with reference mainly to FIG. 8, the behavior of each part when the operating element 51 is operated to enter the scissor mode (Q), the cutter mode (P), and the lock mode (R) by the mode switching mechanism 5. explain. This figure illustrates the main part of the mode of the components in each mode, focusing on the actuator 51, the engaging part 52, and the handle.

  When the operating element 51 is set at the center of the operating range in the scissors mode (Q), a part of the leaf spring 54 is exposed from the restriction slit 56a, but the pin 55 is in contact with the pin support surface 57a of the opening / closing part. The relative movement between the pin 55 and the second handle 4 is prohibited. However, the pin 55 can move in and out of the first handle 3 from the pin handle 35 through the guide recess 33 with respect to the first handle 3. Scissors that can open and close the blades 1 and 2 only from the closed position (R1) where 22 is not exposed to the open position (Q1) where the blade lines 12 and 22 of both blades 11 and 21 are open. Mode (Q) is realized. Here, in particular, the closed posture in which the blade line 12 of the first blade 1 does not protrude from the blade peak 24 of the second blade 2 and the blade line 22 of the second blade 2 does not protrude from the blade peak 14 of the first blade 1 ( In the case of R), as shown in the center of the figure, the pin 55 is prohibited from moving in the upward direction in the figure. Therefore, in the scissors mode (Q), the closed posture (R1) is opposite to the open posture (Q1). Operation to is prohibited. As a result, the scissors mode (Q) is prohibited from taking the cutter posture (P1). That is, in the scissors mode (Q), the opening / closing operation of both blades 1 and 2 is permitted between the closed posture (R1) and the open posture (Q1).

  When the actuator 51 is set to the illustrated side in the operating range in the cutter mode (P), the leaf spring 54 is exposed from the restriction slit 56a, and the pin 55 is the second handle only on the illustrated upper side where the deformation allowing portion 59 is provided. 4 is operable. At this time, the pin 55 is positioned at the cutter end 35p and cannot operate with respect to the first handle 3. The fact that the pin 55 moves upward in the figure with respect to the second handle 4 means that the second blade 2 with respect to the first blade 1 is changed from the closed posture (R1) to the open posture (Q1) in the opposite direction to the deformable portion 59. Only the space can be rotated. In other words, in the cutter mode (P), if the user performs an operation such as grasping the two handles so that the two handles come together, the blades 1 and 2 rotate relative to each other in the opposite direction to the opening direction. The cutter posture (P1) shown in FIG. In the present embodiment, when the pin 55 enters the deformation allowing portion 59, the blades 1 and 2 are relatively rotated by 3 °. As shown in FIG. 8, when the pin 55 enters the deformation allowing portion 59 in the cutter posture (P1), the leaf spring 54 is elastically deformed. That is, when the user releases the external force from the cutter posture (P1) by stopping gripping the handle, the scissors A self-returns to the closed posture (R1) by the elastic return of the leaf spring 54.

  When the operating element 51 is set to the other end in the drawing in the operating range in the lock mode (R), the leaf spring 54 is accommodated in the regulating slit 56a and the pin 55 is placed on the pin fixing surface 58a in the lock portion 58. Because of the fitting, the relative movement between the pin 55 and the second handle 4 is prohibited. In addition, the pin 55 is accommodated in the lock end 35 r of the pin accommodating portion 35 provided in the first handle 3 and cannot operate with respect to the first handle 3. In other words, in the lock mode (R), the pin 55 cannot move with respect to the first handle 3 or the second handle 4, so that the scissors A cannot be operated from the closed position (R1). The achieved state is realized.

  Therefore, in this embodiment, the blade guard 7 which is an operation part for a user to operate in the cutter posture (P1) realized only in the cutter mode (P) is provided. The blade guard 7 is formed into a shape suitable for correcting the postures of the blades 1 and 2.

  That is, as shown in FIGS. 3 to 5, the end face of the ridge 14 of the first blade 1 faces in a direction orthogonal to the surface direction of the blade back surface 16. Then, as described above, the end face of the blade peak 14 is inclined by 25 °, which is half the blade angle of the first blade 1 set at, for example, about 50 °. In other words, the pressing operation surface 71 faces in a direction orthogonal to the bisected virtual surface X assumed between the blade surface 15 and the blade back surface 16 of the cutting edge portion 17 of the first blade 1.

  In particular, as shown in FIG. 5, when the user presses the pressing operation surface 71 toward the surface of the paper S that is the object to be cut, the blade surface 15 and the blade back surface 16 of the blade edge portion 17 of the first blade 1 The blade edge portion 17 is in contact with the paper S while the postures of the blades 1 and 2 are guided so that the bisected virtual plane X assumed during the period is perpendicular to the surface of the paper S. As a result, when the scissors A having the cutter posture (P1) is used as a cutter, the user can obtain the same comfort as other commercially available cutter knives having a double-edged blade. In addition, in the present embodiment, as described above, it is possible to accurately cut the paper S along the ruler in the cutter posture (P1) by applying a ruler to the lower surface of the recessed portion 28.

  With the above configuration, the scissors A according to the present embodiment can be used as a normal scissors or a cutter while using a single scissors A. It contributes effectively to reduction and efficiency of work. That is, the scissors A according to the present embodiment is configured so that the bisected virtual plane X assumed between the blade surface 15 and the blade back surface 16 is orthogonal to the surface of the paper S when used as a cutter. The posture is guided. Therefore, it is possible to prevent or suppress the problem that the blade 11 is in contact with the paper S in an inappropriate posture, and the performance as a cutter can be efficiently exhibited.

  In this embodiment, in order to make it easy for the user to handle, the blade guard 7 as an operation unit for the user to operate when used as a cutter is applied as the posture guiding means. Modeled in a shape suitable for correcting the postures 1 and 2.

  In this embodiment, in order to be able to accurately handle the scissors A in the cutter posture (P1) without the user being strongly conscious, in the present embodiment, the user is given an operating force when using the blade guard 7 as a cutter. A pressing operation surface 71 is provided, and the direction of the pressing operation surface 71 is made to be orthogonal to the bisected virtual surface X.

In order to achieve the above effect with a simple configuration, the present embodiment takes a cutter posture in which the blade tip portion 17 of the blade 11 of the first blade 1 is exposed to the blade peak 24 side of the second blade 2 when used as a cutter. For the scissors A configured to be obtained, a pressing operation surface 71 is provided on the blade guard 7 provided on the cutting edge 14 of the first blade 1 as an operation unit. Thus, when the scissors A having the cutter posture (P1) is used as a cutter, the user can obtain the same usability as other commercially available cutter knives having a double-edged blade.
<Modification>
Hereinafter, each modification of the above embodiment will be described. In this modification, the same reference numerals are given to the components corresponding to the constituent elements of the above-described embodiment, and the detailed description thereof is omitted.

  That is, in the above-described embodiment, as described above as the posture guiding means, among those that are mechanically guided according to the form, the pressing operation surface 71 is provided on the edge 14 side of the first blade 1, and the direction of the pressing operation surface 71 is As described above, the posture guiding means X of the present invention includes, as described above, a handle shape that automatically corrects the posture by grasping the handles 3 and 4, as described above. Various aspects can be applied.

  In the modification shown in FIG. 9, in addition to the blade guard 7 as posture guiding means, a posture provided with a slidable contact surface 75 that slidably contacts the surface of the paper S or a surface parallel to the surface and corrects the posture of the blades 1 and 2. A deformation means 7A is provided. Specifically, the posture changing means 7A having the sliding contact surface 75 is provided by raising the material on the edge 24 side of the second blade 2 or attaching a separate member.

  Of course, the first blade is provided with the posture changing means 7A having the same sliding contact surface 75 on the cutting edge side, and the sliding contact with the ruler used along with the cutting edge side of the second blade. The surface 75 may be provided, or the sliding contact surface 75 may be provided on the side of the handles 3 and 4. Further, as in the present modification, the posture guiding means provided in the scissors A is not limited to a single one, and a plurality of posture guiding means 7 and 7A may be applied together. In addition, in the above-described embodiment, as described above, if a ruler is applied to the lower surface of the recessed portion 28, the paper S is automatically set to a shape that can be cut in a straight line when used as the cutter posture (P1). It is also possible to provide a slidable contact surface in the recessed portion 28 by appropriately setting the angle at which the lower surface faces.

  Of course, as in the modified example shown in FIG. 10, the blades 1 and 2 are used as posture guiding means and the blades 1 and 2 are used as an operator for guiding the posture. There may be mentioned those provided with a marker 74 as an inclination instruction element 73 for visually recognizing the inclination.

  More specifically, the shape of the blade guard 7 is a semi-cylindrical shape, and the marker 74 is provided at an appropriate position and a place to be pressed. Specifically, in the present embodiment, the blade 11 of the first blade 1 has a single-edged shape with the blade back surface 14 being flat, and therefore the marker 74 is provided at a position slightly shifted from the apex of the semi-cylindrical surface. . In the present embodiment, the blade edge portion 17 has a single-blade shape. However, if the blade edge portion 17 has a double-blade shape that is symmetrical in cross section, a marker 74 may be provided at the apex of the semi-cylindrical surface.

  Further, as shown in FIG. 11, in this modification, as the tilt instruction element 73, posture guiding means 7A that can be used as a guide or the like protruding from the second blade 2 is provided, and the through hole 77 or the like is provided in the posture guiding means 7A. It is good also as an aspect which provided the direction specific surface 76 which is a specific surface parallel to the bisection virtual surface X. As shown in FIG. Specifically, if the orientation of the blades 1 and 2 is adjusted so that the user can see the other side through the through-hole 77, the bisected virtual plane X is naturally appropriate for the blades 1 and 2 that are orthogonal to the surface of the paper S. It becomes the direction. In addition, if the orientation specifying surface 76 is perpendicular to the surface of the paper S, the bisected virtual surface X is naturally an appropriate direction orthogonal to the surface of the paper S.

  In addition, instead of the through hole 77 in the figure, a bottomed hole may be provided and a marker may be provided on the bottom surface. In other words, if the user adjusts the orientation of the blades 1 and 2 so that the marker on the bottom surface can be visually recognized, the bisected virtual surface X naturally becomes the appropriate orientation of the blades 1 and 2 orthogonal to the surface of the paper S. In addition, a device that functions as a level (level) may be provided.

  Although the embodiment of the present invention has been described above, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. First, although not shown or described in the above embodiment and the modification, the posture guiding means includes a sensor for detecting the inclination of the bisected virtual surface, and the sensor has an inclination of the bisected virtual surface. A notification element that notifies the user that the predetermined value has been reached may be provided.

  For example, in the above embodiment, when the cutting edge portion has a double-edged shape that is symmetrical in cross section, an example is described in which a marker is provided at the apex of the semi-cylindrical surface. However, in this case, the marker is not provided. Also good. This is because the semi-cylindrical surface itself is considered to correspond to the tilt instruction element of the posture guiding means, and the user presses the apex of the semi-cylindrical surface, which is naturally in the same direction as the bisected virtual surface. In addition, specific modes of the handle and the blade are not limited to those of the above-described embodiment, and various modes including existing ones can be applied. Therefore, of course, a so-called glueless specification may be applied as the blade specification. Specifically, it may be one that realizes glueless specifications by providing dents on the back of the blades of both blades, or one that realizes specifications by applying processing such as titanium coating or fluorine coating on the surfaces of both blades. . The blade structure is called a so-called “arch blade” structure in which the blade line is curved in an arch shape, or a so-called “giza blade” in which a portion from the blade line to the blade surface is formed into a sawtooth shape. It may have a structure. In addition, when the structure of the “zagged edge” is applied, it contributes to improvement in safety when used in the cutter mode.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  The present invention can be used as scissors in which a first blade having a blade and a second blade are opened and closed to squeeze a workpiece to be cut between the two blades.

A ... Scissors with cutter function (scissors)
X ... Bisection virtual plane 1 ... First blade (first blade)
15 ... Blade surface of the first blade (blade surface)
16 ... back of the blade of the first blade (back of the blade)
17 ... Cutting edge part of the first blade (cutting edge part)
2 ... Second blade (second blade)
28 ... Edge side of the second blade (dented part)
11, 21 ... Blade 12, 22 ... Blade line 3 ... Handle (first handle)
4 ... Handle (second handle)
P1 ... Cutter posture S ... Subject (paper)
7. Posture guidance means, operation unit (blade guard)
7A: Posture guiding means 71 ... Pressing operation surface 73 ... Tilt display element 74 ... Marker 75 ... Sliding contact surface 76 ... Direction specifying surface 77 ... Through hole

Claims (7)

The first blade having the blade and the second blade are opened and closed so that the object to be cut disposed between the two blades can be squeezed, and at least the blade of the first blade Scissors that can also be used as a cutter by pressing the cutting edge part against the workpiece,
Posture guidance for guiding the posture of the blade so that a bisected virtual plane assumed between the blade surface and the blade back surface of the blade edge portion is orthogonal to the surface of the workpiece when used as a cutter Scissors with cutter function with means.   2. The posture guiding means is provided with an operation portion for a user to operate when used as a cutter, and the operation portion is shaped into a shape suitable for correcting the posture of the blade. Scissors with cutter function as described.   When the operation unit is used as a cutter, the operation unit is provided with a pressing operation surface for applying an operating force, and the direction of the pressing operation surface is orthogonal to the bisected virtual surface. The scissors with a cutter function according to claim 2. When used as a cutter, the cutting edge portion of the blade of the first blade is a scissor configured to be able to take a cutter posture exposed to the blade peak side of the second blade,
The scissors with a cutter function according to claim 3, wherein the operation portion is provided with the pressing operation surface on a blade guard provided on a ridge of the first blade.   The cutter according to claim 1, 2, 3, or 4, wherein the posture guiding means includes a sliding contact surface that corrects the posture of the blade by sliding contact with a surface of the object to be cut or a surface parallel to the surface. Scissors with function. The scissors with a cutter function according to claim 1, wherein the posture guiding means is provided with an inclination display element for recognizing the inclination of the bisected virtual surface at a site that can be visually recognized by a user using the cutter. . The posture guiding means includes a sensor for detecting the inclination of the bisected virtual surface, and a notification element for notifying the user that the inclination of the bisected virtual surface has reached a predetermined value. The scissors with a cutter function according to claim 1.

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