JP6736854B2 - Scissors with cutter function - Google Patents

Description

The present invention relates to scissors in which a first blade having a blade and a second blade are opened and closed to scissor an object to be cut arranged between the blades.

Conventionally, by opening and closing the first blade and the second blade having a blade, scissors to scissor the object to be cut arranged between the two blades, that is, the blade line of the both blades opened It is well known that the scissors are configured to scissor an object to be cut arranged between the two blades from an open posture in which the blades are exposed in a state to a closed posture in which the blade lines of the blades are not exposed.

And among such scissors, the cutter attitude in which the blade tip portion of at least the blade of the first blade is exposed to the ridge side of the second blade by operating both blades from the open attitude to beyond the closed attitude. Scissors capable of taking the shape have also been proposed (see, for example, Patent Document 1). Such scissors, by changing the attitude to the cutter attitude, presses the cutting edge portion of the first blade against the object to be cut while being the scissors, and the object to be cut is a cutter knife (hereinafter referred to as a cutter). Can be cut as

Even before, even with scissors that cannot take the above-described cutter posture, some users may perform the operation of directly pressing the scissors portion of one of the blades 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 one of the blades is directly pressed against the object to be cut, the user usually holds the scissors as if using the cutter. The object to be cut is cut by holding the blade tip portion of one of the blades against the object to be cut and pulling it off.

However, in the conventional scissors including the scissors described in the above-mentioned patent documents, the blade of each blade generally has 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 has a blade cutting shape inclined with respect to the surface of each blade, and the blade back surfaces of both blades are brought into sliding contact with each other to function as scissors. Is designed to demonstrate.

When using such scissors blade as a cutter, the user usually presses the blade vertically against the object to perform the cutting operation unless any measures are taken. Therefore, the blade comes into contact with the object to be cut in a state of being inclined 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 of other forms, it is often the case that the user cannot well recognize the attitude of the blade tip portion when used as a cutter. Therefore, the blade often comes into contact with the object to be cut in an improper posture and impairs the sharpness when used as a cutter.

The present invention focuses on such a problem, and an object thereof is to provide scissors with a cutter function that can reasonably improve the sharpness when used as a cutter.

The present invention takes the following means in order to achieve such an object. That is, the scissors with a cutter function according to the present invention is configured to open and close the first blade and the second blade having a blade so that the object to be cut arranged between the both blades can be scissors-cut. Is a scissors that can also be used as a cutter by pressing the blade tip portion of the blade in at least the first blade against the object to be cut, and when using the cutter as the blade surface and the blade back surface of the blade tip portion. It is characterized in that a posture guiding means for guiding the posture of the blade is provided so that an imaginary bisecting plane assumed therebetween is orthogonal to the surface of the object to be cut.

With such a configuration, when used as a cutter, the bisector virtual surface assumed between the blade surface and the blade back surface of the blade tip portion is orthogonal to the surface of the object to be cut. The attitude of the blade is guided. Therefore, it is possible to prevent or suppress the problem that the blade comes into contact with the object to be cut in an inappropriate posture, and it is possible to efficiently exhibit the performance as a cutter.

Then, as an example of the posture guiding means that is easy for the user to handle, the posture guiding means is provided with an operating portion for the user to operate when using it as a cutter, and the operating portion corrects the posture of the blade. Embodiments that are shaped into a suitable shape can be mentioned.

In order to enable the user to handle scissors accurately in the cutter posture without the user having to be strongly aware of it, the operating part is equipped with a pressing operation surface for applying operating force when the user uses it as a cutter. It is desirable that the direction of the pressing operation surface be orthogonal to the bisector virtual surface.

In order to realize the above effect with a simple configuration, the blade tip portion of the blade of the first blade when used as a cutter is configured so that it can take a cutter posture that is exposed on the ridge side of the second blade. With respect to 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.

In addition, as an example of the posture changing means other than the above-mentioned aspect, a posture guiding means is provided with a sliding contact surface for correcting the posture of the blade by sliding contact with the surface of the object to be cut or a surface parallel to the surface. Can be mentioned.

In addition, in order to improve the usability in the cutter posture without changing the shape from the conventional scissors, the posture guiding means should be placed in a bisected virtual surface at a part visible to the user who uses the cutter. It is desirable to provide a tilt display element for recognizing the tilt.

Further, as another aspect for configuring the posture guiding means, the posture guiding means includes a sensor for detecting the inclination of the bisector virtual surface, and the sensor has a predetermined value for the inclination of the bisector virtual surface. A mode that includes a notifying element that notifies the user of the arrival can be given.

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

First, the posture guiding means can be divided into (1) means for mechanically guiding according to the form and (2) means for guiding the user by appealing to the eyes and other senses.

The following forms are included as specific examples of (1) the one that is mechanically guided by the form.
(1-1) A mode in which a pressing operation surface is provided on the cutting edge side of the first blade, and the direction of this pressing operation surface is orthogonal to a virtual plane that bisects: Here, in this embodiment, the cutting edge portion has a double-edged shape. It does not matter whether it has or has a single-edged shape.
(1-2) Form in which the handle is twisted with respect to the blade: Here, "twisting" does not mean simply tilting, but the tilt of the first blade is proper when the user naturally grips the handle. The following shows the form. In the case of this form, it is premised that the cutting edge portion is a single-edged blade or a double-edged blade whose cross section has an asymmetric shape. It is not applicable when the cutting edge portion is a double-edged blade whose cross-section is symmetrical.
(1-3) A mode in which a sliding contact surface capable of sliding contact with the surface of the object to be cut is provided in any part: 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 the object to be cut is provided on the cutting edge side of the first blade: the first blade by adjusting the direction of the sliding contact surface appropriately The angle of.
(1-3-2) A form in which the sliding contact surface is provided on the cutting edge side of the second blade.
(1-3-3) A form in which a sliding contact surface corresponding to a ruler to be used is provided on the blade 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, specific examples of (2) those which appeal to and guide the user's visual sense or other senses include the following respective forms.
(2-1) Visual guidance such as provision of a marker, that is, visual guidance to the user by using a marker or the like so that the user can be guided in an appropriate direction: (2-1-1), (2-1-2) and the like.
(2-1-1) A guide provided on the cutting edge of the first blade, and a marker having dots or lines provided on the guide: More specifically, the guide has a half-cylindrical pressing operation surface. And a marker is provided at an appropriate position on the pressing operation surface and at a position to be pressed. Regarding the position of the marker, specifically, when the cutting edge portion is a single blade, the shape on the cutting edge side does not matter, but when it is, for example, a cylindrical surface, it is provided at a position slightly displaced from its apex. When the cutting edge portion is 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 separated positions, and the appropriate orientation of the blade can be known by 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, in the case where the cutting edge portion has a double-edged shape having a symmetrical shape in cross section, if the cutting edge side is set to, for example, a cylindrical surface, the cylindrical surface itself is considered to function as the posture guiding means. That is, when pressing the cylindrical surface, the apex is automatically 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. Some of them are in the right direction.
(2-4) A specific surface that can be visually recognized is made parallel to the bisector virtual surface: that is, a specific surface is provided on all or part of the surface of the blade. Here, a part may be one in which a ridge is provided and the outer surface of the ridge is a specific surface, or one in which the side surface of the guide is a "specific surface". Of course, this particular surface may be provided on the handle.
(2-5) Indentation such as a hole or slit and a marker provided on the bottom surface thereof: The direction in which this marker is visible is appropriate.
(2-6) A device provided with a function as a level (level): For example, in the case of a bubble tube level, the proper direction can be known from the position of the bubble.
(2-7) A sensor that emits light so that it can be seen by the user when turned in an appropriate direction.
(2-8) A sensor that emits sounds and vibrations so that the user can recognize it by turning the sensor in an appropriate direction.

According to the present invention, it is possible to provide scissors with a cutter function that can reasonably improve the sharpness when used as a cutter.

The perspective view concerning one embodiment of the present invention. The front view. Operation|movement explanatory drawing which concerns on FIG. The enlarged view of the principal part which concerns on FIG. FIG. 5 is a sectional view taken along line AA of FIG. 4. The disassembled perspective view which concerns on the same embodiment. Another exploded perspective view according to the embodiment. The figure which shows 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.

An embodiment of the present invention will be described below with reference to the drawings.

The 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 and the second blade 2 as a second blade having a blade, A sheet-shaped object such as a paper S, which is an object to be cut, disposed between the two blades 11 and 21 is cut into pieces.

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

The scissors A according to the present embodiment is a scissors A that can be used as a cutter by pressing at least the blade tip portion 17 of the first blade 1 against the paper S that is the object to be cut, and is used as a cutter. Attitude guidance for guiding the attitudes of the blades 1 and 2 so that a virtual bisector X assumed between the blade front surface 15 and the blade back surface 16 of the blade tip portion 17 is orthogonal to the surface of the object to be cut. A blade guard 7 as a means is provided.

The scissors A is provided with the 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 ridge 24 of the second blade 2. The open position (Q1) in which the blade lines 22 of the second blade 2 are exposed from the closed position (R1) in which the blade line 22 of the second blade 2 does not project from the edge 14 of the first blade 1 (R1) Scissors mode (Q) in which the blades 1 and 2 can be opened/closed only up to, and a cutter attitude in which at least the cutting edge portion 17 of the blade of the first blade 1 is exposed to the cutting edge 24 side of the second blade 2 ( It is configured to be able to select either a cutter mode (P) that allows the P1) to be taken or a lock mode (R) that locks both blades 1 and 2 in the closed posture (R1). ..

In addition, as shown in FIG. 3, in particular, when the blade guard 7 is pressed by the index finger in the cutter mode (P), the scissors A may contact the paper S, which is the object to be cut, with the first blade 1 in the most suitable posture. it can. Hereinafter, each component of the scissors A will be specifically described.

As shown in FIGS. 1 to 7, the first blade 1 is made of, for example, a metal plate such as a stainless steel plate, and this embodiment is formed by pressing. The first blade 1 is located above when the paper S or the like is cut into pieces. Further, in the present embodiment, the first blade 1 has an intermediate region between the region 1a on the tip side having the blade 11 and the region 1c on the base end side provided with the first handle 3 for opening/closing the blade 11. 1b, it is pivotally connected to the second blade 2 via a pivot pin 6. The blade 11 provided in the tip-side region 1a 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 side opposite to the first blade 1, that is, a blade surface 15, and these blades. The blade line 12 is 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 on the blade line 12 between the blade back surface 16 and the blade front surface 15 may be arbitrarily set in the range of 40° to 50°, but is set to about 50° in this embodiment. Further, the first blade 1 includes a cutting edge 14 formed on the edge opposite to the cutting line 12 and a cutting edge portion 17 located at the tip. In addition, in the present embodiment, the blade guard 7 is attached to the blade crest 14 side closer to the base end side than the blade tip portion 17. A first handle 3 is attached to the region 1c on the base end side of the first blade 1. In addition, this first blade 1 can prevent at least the tip end shape near the cutting edge portion 17 from exposing the cutting edge portion 27 of the second blade 2 to the cutting edge 14 side in any state during use. In order to make the shape possible, the size of the blade back surface 16 in the short dimension direction is set larger than that of the second blade 2.

The second blade 2 is inserted below the paper S. Like the first blade 1, the second blade 2 is a plate-shaped member made of a metal plate made of stainless steel and integrally press-molded. The thickness of this metal plate is arbitrary, and is set to about 1.8 mm in this embodiment. The second blade 2 has a pivot pin 6 in an intermediate region 2b between a region 2a on the front end side having a blade 21 and a region 2c on the base end side provided with a second handle 4 for opening/closing the blade 21. It 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 opposite side of the first blade 1, that is, a blade surface 25, and these blades. The blade line 22 is 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. The blade angle at the blade line 22 between the blade back surface 26 and the blade front surface 25 is set to, for example, about 50° in this embodiment. Further, the blade 21 has a blade edge 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 edge 24 of the blade edge portion 27. And 28. That is, by forming the recessed portion 28, the second blade 2 has a tip end shape for allowing the cutting edge portion 17 of the first blade 1 to be exposed on the cutting edge 24 side. In addition, in the present embodiment, if a ruler is applied to the lower surface of the recessed portion 28, the paper S is automatically set to a straight line when used in the cutter posture (P1).

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

The second handle 4 is mainly composed of a handle body 41 in which a region 2c on the base end side of the second blade 2 is inserted and attached to the front end side. It has a finger rest 42 for holding it and a sliding projection 44 for cooperating with the first handle 3 to promote a smooth opening/closing operation. That is, when the blades 1 and 2 are opened and closed, the sliding protrusion 44 slides in the guide recess 33 of the first handle 3 for smooth opening and closing of the blades 1 and 2. Have contributed. Further, the outer shape of the second handle 4 is such that it does not significantly protrude from an imaginary extension line in the direction in which the edge 14 of the first blade 1 extends. By making the outer shape of the second handle 4 into a gentle curved shape that is close to a straight line as described above, when holding the cutter knife as shown in FIG. It can fit the palm of your hand. Further, mutual holding can be smoothly performed from the use in the scissors mode (Q) to the mode shown in FIG.

The blade guard 7 is, as shown in FIGS. 3 to 5, from the blade peak 14 side at the most proximal end side of the blade 11 from the proximal end side to the vicinity of the pivot pin 6 slightly from the cutting edge portion 17 of the first blade 1. The blade surface 15 and the blade back surface 16 are attached so as to cover about one third of the short dimension. The blade guard 7 is set to a size that is not too large so that a user can visually recognize an object to be cut such as the paper S passing through the blade guard 7 when used in the scissors mode (Q). As a result, even when the blade guard 7 is used above the paper S and used in the scissors mode (Q), 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 and used without being inverted. Of course, if the visibility of the paper S in the scissors mode (Q) is to be further improved, the size of the blade guard 7 may be further reduced. Further, this blade guard 7 is formed so that it will not hurt even if an index finger is applied and pressed in order to prevent the finger from being hurt if the finger is directly placed on the cutting edge 14 and pressed. The thickness of the blade guard 7 is set to be approximately the same as or slightly larger than the thickness 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 a thickness of the blade 21 of the second blade 2 at the other edge of the first blade 1 on the blade back surface 16 side. The guard surface 72 is formed so as to have a large thickness. By providing this guard surface 72, when the user puts his/her finger on the cutting edge 14 side of the first blade 1, the cutting line 22 of the second blade 2 does not hit the finger even if the scissors A takes any posture. .. Specifically, when the guard surface 72 is in the closed posture (R1) and the cutter posture (P1), the position is close to the blade line 22 of the second blade 2, so that the user has these postures. The blade line 22 of the second blade 2 facing the guard surface 72 at is not accessible. In this embodiment, the blade guard 7 is made of a resin material, which is a different material from the first blade 1, but of course, any material may be used. 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-forming a part of the first blade 1 on the edge 14 side to be a flat surface.

The pressing operation surface 71 is a flat surface that is inclined by about 25° toward the blade surface 15 from the end surface of the 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 the scissors A in the cutter mode (P) using the blade guard 7 which is the posture guiding means will be described later.

In the present embodiment, the mode switching mechanism 5 is provided between the first handle 3 and the second handle 4 in the regions 1c, 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 actuator 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 6 to 8.

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

The slide guide portion 53 is integrally formed on the operator 51 side and protrudes toward the second handle 4 side. The first mounting claw 53a is provided on the second handle 4 side in a slit shape so that the first mounting claw 53a can slide. A second slide claw 53b for supporting, a second mount claw 53c formed integrally with the operator 51 side at a position facing the first mount claw 53a, and a second mount claw 53c for sliding and positioning It has a slide groove 53d. The second mounting claw 53c has a moderation ridge 53e protruding toward the second slide groove 53d. The second mounting groove has moderation recesses 53f that can be fitted into the moderation projections 53e by projections and recesses at three positions near both ends on the inner surface side and in the center. With this slide guide portion 53, the operator 51 makes it possible to achieve high precision by fitting the resin material into concave and convex at accurate positions corresponding to the cutter mode (P), scissor mode (Q), and lock mode (R). A moderation mechanism is realized.

The operator 51 includes a slide operation body 51a that receives an operation force from a user's finger, a plate spring 54 that is a resiliently urging member that extends in a plate shape with the slide operation body 51a as a base end, and is elastically deformable. It has a pin 55 having a substantially cylindrical shape provided at the tip of the leaf spring 54. The slide operation body 51a has fine irregularities formed on its surface so that the operation force can be received from the fingers of the user without slipping. The leaf spring 54 can allow and prohibit elastic deformation depending on the position of the slide operation body 51a. In the present embodiment, the leaf spring 54 is elastically deformable only in the cutter mode (P). ing. The pin 55 further projects from the tip of the leaf spring 54 to the first handle 3 side. The projecting end of the pin 55 is housed in the pin housing portion 35 and the guide recess 33 on the first handle 3 side, and when the projecting end of the pin 55 is located in the cutter portion and the lock portion of the pin housing portion 35, , The operation of the first handle 3 with respect to the pin 55 is prohibited.

The engaging portion 52 is for engaging with the operator 51 and switching between the scissor mode (Q), the cutter mode (P) and the lock mode (R). The engaging portion 52 includes a restricting portion 56 that engages with the actuator 51 to prevent the blades 1 and 2 from taking the open posture (Q1) in the cutter mode (P), and the closed posture in the scissors mode (Q). The open/close permitting portion 57 engaging with the operator 51 and the blades 1 and 2 are locked in the lock mode (R) so that the blades 1 and 2 can be opened and closed only from (R1) to the open posture (Q1). It has a lock portion 58 and a deformation permitting portion 59 for permitting the operation of the pin 55 when the posture is changed from the closed posture (R1) to the cutter posture (P1). The restricting portion 56 has a restricting slit 56a capable of accommodating the leaf spring 54 so as to be sandwiched therebetween. The opening/closing allowance portion 57 has a pin support surface 57a that can prevent relative movement between the pin 55 and the second handle 4 by contacting 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 shape that can be fitted onto the outer surface of the pin 55 in the lock mode (R) at the edge of the restriction slit 56a. The pin 55 that is in contact with the pin fixing surface 58a is in a state in which it cannot operate with respect to the second handle 4 because the plate spring 54 is housed in the restriction slit 56a. The deformation permitting portion 59 is provided by recessing the material forming 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 permitting portion 59, whereby the relative movement of the pin 55 and the second handle 4 is permitted.

Next, referring mainly to FIG. 8, regarding the behavior of each part when the operator 51 is operated to set the scissors mode (Q), the cutter mode (P), and the lock mode (R) by the mode switching mechanism 5. explain. The figure shows the main parts focusing on the actuator 51, the engaging portion 52, and the handle in each mode of the constituent elements in each mode.

When the operator 51 is set to the center of the operating range in the scissors mode (Q), the leaf spring 54 is partially exposed from the restriction slit 56a, but the pin 55 is in contact with the pin support surface 57a of the opening/closing portion. The relative movement between the pin 55 and the second handle 4 is prohibited. However, the pin 55 can be moved relative to the first handle 3 from the pin accommodating portion 35 through the guide recess 33 to the inside and outside of the first handle 3, so that the scissors A can move the blade lines 12 of the double-edged blades 11 and 21. Scissors capable of opening and closing the blades 1 and 2 only between the closed posture (R1) in which the blades 22 are not exposed and the open posture (Q1) in which the blade lines 12 and 22 of the blades 11 and 21 are opened. Mode (Q) is realized. Here, in particular, the closed posture in which the blade line 12 of the first blade 1 does not project from the blade peak 24 of the second blade 2 and the blade line 22 of the second blade 2 does not project from the blade peak 14 of the first blade 1 ( R), the movement of the pin 55 in the upward direction in the figure is prohibited as shown in the center of the figure, so in the scissor mode (Q), the side opposite to the open position (R1) and the open position (Q1). 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 allowed “only” between the closed posture (R1) and the opened posture (Q1).

When the operator 51 is once set to the illustrated side in the operation range in the cutter mode (P), the leaf spring 54 is exposed from the restriction slit 56a, and the pin 55 is provided with the deformation permitting portion 59 only on the upper side in the drawing. 4 can be operated. At this time, the pin 55 is located at the cutter end 35p and cannot operate with respect to the first handle 3. The fact that the pin 55 moves to the upper side in the drawing with respect to the second handle 4 means that the second blade 2 moves in the opposite direction from the closed position (R1) to the open position (Q1) with respect to the first blade 1 and the deformation permitting portion 59. Only the space of can be rotated. In other words, in this cutter mode (P), if the user performs an operation such as grasping the two handles so that they come close to each other, both blades 1 and 2 rotate relative to each other in the direction opposite to the opening direction. The cutter posture (P1) shown in FIG. 5 can be taken. In this embodiment, when the pin 55 enters the deformation permitting portion 59, the two blades 1 and 2 relatively rotate by 3°. Then, as shown in FIG. 8, when the pin 55 enters the deformation permitting portion 59 in the cutter posture (P1), the leaf spring 54 elastically deforms. That is, if the user releases the external force from the cutter posture (P1) by stopping the grip on the handle, the scissors A self-returns to the closed posture (R1) due to the elastic return of the leaf spring 54.

When the actuator 51 is set to the other end side in the operating range in the lock mode (R), substantially the entire area of the leaf spring 54 is accommodated in the restriction slit 56a, and the pin 55 is attached to the pin fixing surface 58a of the lock portion 58. The relative movement between the pin 55 and the second handle 4 is prohibited because the pin 55 is fitted. In addition, the pin 55 is accommodated in the lock end 35r of the pin accommodating portion 35 provided in the first handle 3 and cannot operate with respect to the first handle 3. That is, in the lock mode (R), the pin 55 is in a state in which neither the first handle 3 nor the second handle 4 can move, so that the scissors A cannot move from the closed position (R1). The realized state is realized.

However, in this embodiment, the blade guard 7 is provided as an operation unit for the user to operate in the cutter posture (P1) realized only in the cutter mode (P). 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 surface of the edge 14 of the first blade 1 faces in a direction orthogonal to the surface direction of the blade back surface 16. As described above, the edge of the blade peak 14 is inclined by 25°, which is half the blade angle of the first blade 1 set to about 50°, for example. In other words, the pressing operation surface 71 faces in a direction orthogonal to the bisector virtual surface X assumed between the blade surface 15 and the blade back surface 16 of the blade tip 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 tip portion 17 of the first blade 1 The blade tip portion 17 contacts the paper S while the postures of the blades 1 and 2 are guided so that the bisectoral virtual plane X assumed between the two is orthogonal 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 apply a ruler to the lower surface of the recessed portion 28 and accurately cut the paper S along the ruler in the cutter posture (P1).

With the above-described configuration, the scissors A according to the present embodiment can be used as both normal scissors and a cutter while using the single scissors A, so that the burden on the user during use is reduced. It effectively contributes to the reduction and efficiency of work. That is, the scissors A according to the present embodiment uses the first blade 1 so that the bisector virtual plane X assumed between the blade front surface 15 and the blade back surface 16 when used as a cutter is orthogonal to the surface of the paper S. Posture is induced. Therefore, it is possible to prevent or suppress the problem that the blade 11 comes into contact with the paper S in an inappropriate posture, and the performance as a cutter can be efficiently exhibited.

Then, in order to make it easier for the user to handle, in the present embodiment, as the posture guiding means, a blade guard 7 which is an operation portion for the user to operate when used as a cutter is applied, and the blade guard 7 is a blade. It is shaped to be suitable for correcting postures 1 and 2.

In order to allow the user to accurately handle the scissors A in the cutter posture (P1) without the user being strongly aware, in the present embodiment, the blade guard 7 is provided with an operating force by the user when used as a cutter. A pressing operation surface 71 for performing the operation is provided, and the direction of the pressing operation surface 71 is orthogonal to the bisector virtual surface X.

In order to achieve the above effect with a simple configuration, in the present embodiment, when used as a cutter, the blade tip portion 17 of the blade 11 of the first blade 1 has a cutter posture in which it is exposed to the edge 24 side of the second blade 2. In addition to the scissors A configured to obtain, 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 operating portion. Thereby, 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.
<Modification>
Hereinafter, each modification of the above embodiment will be described. In the modified example, components corresponding to those of the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, in the above-described embodiment, as described above as the posture guiding means, among those that are guided mechanically 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 this pressing operation surface 71 is set. As a matter of course, the posture guiding means X of the present invention has a handle shape in which the posture is automatically corrected by grasping the handles 3 and 4, as described above. Various aspects may be applied.

In the modification shown in FIG. 9, in addition to the blade guard 7 as a posture guiding means, a posture including a sliding contact surface 75 for correcting the postures of the blades 1 and 2 by slidingly contacting the surface of the paper S or a surface parallel to the surface. Deformation means 7A is provided. Specifically, the attitude 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 by attaching a separate member.

Of course, the first blade is provided with the attitude changing means 7A having the sliding contact surface 75 similar to the above on the cutting edge side, or the sliding contact for contacting a ruler to be 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 handle 3, 4 side. Further, as in this modification, the posture guiding means provided in the scissors A is not limited to a single posture guiding means, and a plurality of posture guiding means 7, 7A may be applied together. In addition, in the above-described embodiment, as described above, if the ruler is applied to the lower surface of the recessed portion 28, the paper S is naturally set to be cut into a straight line when used in the cutter posture (P1). It is also possible to provide a sliding 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, as a means for guiding by appealing to the user's visual sense or other senses, the blades 1 and 2 are used as the posture guiding means, and the blades 1 and 2 are used by the operator who is used as a cutter. A marker 74 as a tilt indicating element 73 for visually recognizing the tilt can be given.

More specifically, the shape of the blade guard 7 is a semi-cylindrical shape, and the markers 74 are provided at appropriate positions and places to be pressed. Specifically, in the present embodiment, the blade 11 of the first blade 1 has a single-edged shape in which the blade back surface 14 is flat, and therefore the marker 74 is provided at a position slightly displaced from the apex of the semi-cylindrical surface. .. In the present embodiment, the cutting edge portion 17 has a single-edged shape, but if the cutting edge portion 17 has a double-edged 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 the present modification, a posture guiding means 7A that can be used as a guide or the like provided on the first blade 1 is provided as the tilt indicating element 73, and the posture guiding means 7A is provided with a through hole 77 or a through hole 77. It is also possible to adopt an aspect in which a specific surface 76 that is a specific surface parallel to the bisector virtual surface X is provided. Specifically, if the user adjusts the orientation of the blades 1 and 2 so that the user can see the other side through the through hole 77, the blades 1 and 2 in which the bisectoral virtual plane X is orthogonal to the plane of the paper S are automatically adjusted. It becomes the direction. In addition, if the orientation specifying surface 76 is set to be perpendicular to the surface of the paper S, the bisector virtual surface X naturally becomes an appropriate orientation 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 with a marker on the bottom surface. That is, 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 halving virtual plane X naturally becomes the proper 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 and described in the above-described embodiment and modification, the posture guiding means includes a sensor for detecting the inclination of the bisector virtual surface, and this sensor detects the inclination of the bisector virtual surface. A notification element for notifying the user that the predetermined value has been reached may be provided.

For example, in the above-described embodiment, when the cutting edge portion has a double-edged shape that is symmetrical in cross-section, an example in which a marker is provided at the apex of the semi-cylindrical surface is described, but in this case, the marker is not provided. Good. This is because the semi-cylindrical surface itself is considered to correspond to the tilt indicating element of the posture guiding means, and the user presses the apex of the semi-cylindrical surface, which naturally becomes the same direction as the bisector virtual surface. Further, the specific forms of the handle and the blade are not limited to those of the above embodiment, and various forms including existing ones can be applied. Therefore, of course, so-called glueless specifications may be applied as the specifications of the blade. Specifically, it may be one that achieves glueless specifications by providing a recess on the blade back surface of both blades, or one that achieves specifications by subjecting the surfaces of both blades to titanium coating or fluorine coating. .. Further, as the structure of the blade, a so-called "arch blade" structure in which the blade line is curved in an arch shape, or a so-called "serrated blade" in which a portion extending from the blade line to the blade surface is formed in a sawtooth shape is called. The structure may be different. In addition, when the structure of the "knurled blade" is applied, it contributes to improvement of safety when used in the cutter mode.

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

INDUSTRIAL APPLICABILITY 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 scissor an object to be cut arranged between the both blades.

A... Scissors with cutter function (scissors)
X... Virtual plane bisecting 1... First blade (first blade)
15... Blade surface of the first blade (blade surface)
16... Blade back surface of the first blade (blade back surface)
17... Blade portion of the first blade (blade portion)
2... second blade (second blade)
28... Second blade edge side (recessed portion)
11, 21... Blade 12, 22... Blade line 3... Handle (first handle)
4... Handle (second handle)
P1... Cutter posture S... Object to be cut (paper)
7: Posture guiding means, operation unit (blade guard)
7A...Posture guiding means 71...Pressing operation surface 73...Inclination display element 74...Marker 75...Sliding contact surface 76...Direction specific surface 77...Through hole

Claims (5)

By opening and closing the first blade and the second blade having a blade, and configured to be able to scissor the cut object arranged between the two blades, at least in the first blade The blade edge portion of the blade is configured so as to have a cutter posture that is exposed on the edge of the second blade, and the blade tip portion of the blade of the first blade is pressed against the object to be cut in the cutter posture. Scissors that can also be used as a cutter,
When using as a cutter in the cutter posture, the posture of the blade is guided so that the bisected virtual surface assumed between the blade front surface and the blade back surface of the blade tip portion is orthogonal to the surface of the object to be cut. It is equipped with a posture guidance means for
The posture guiding means comprises a blade guard provided on the edge of the first blade,
The blade guard is a scissors with a cutter function in which a pressing operation surface for a user to apply an operation force when the blade guard is used in the cutter posture is orthogonal to the bisector virtual surface. By opening and closing the first blade and the second blade having a blade, and configured to be able to scissor the cut object arranged between the two blades, at least in the first blade The blade tip portion of the blade is configured so as to have a cutter posture that is exposed to the ridge side of the second blade, and the blade tip portion of the blade of the first blade is pressed against the object to be cut in the cutter posture. Scissors that can also be used as a cutter,
When using as a cutter in the cutter attitude, guide the attitude of the blade such that a bisected virtual surface assumed between the blade surface and the blade back surface of the blade tip portion is orthogonal to the surface of the object to be cut. It is equipped with a posture guidance means for
The posture guiding means is provided with a sliding contact surface for correcting the posture of the blade by sliding contact with the surface of the object to be cut or a surface parallel to the surface, and the direction of the sliding contact surface is divided into two parts. Scissors with a cutter function that are orthogonal to the virtual plane. By opening and closing the first blade and the second blade having a blade, and configured to be able to scissor the cut object arranged between the two blades, at least in the first blade The blade tip portion of the blade is configured so as to have a cutter posture that is exposed to the ridge side of the second blade, and the blade tip portion of the blade of the first blade is pressed against the object to be cut in the cutter posture. Scissors that can also be used as a cutter,
When using as a cutter in the cutter posture, the posture of the blade is guided so that the bisected virtual surface assumed between the blade front surface and the blade back surface of the blade tip portion is orthogonal to the surface of the object to be cut. It is equipped with a posture guidance means for
The posture guiding means is provided with a tilt display element for recognizing a tilt of the bisector virtual surface at a portion which can be recognized by a user who is used as a cutter in the cutter posture. A scissors with a cutter function, wherein the first blade is provided with a specific surface parallel to the bisector virtual surface. By opening and closing the first blade and the second blade having a blade, and configured to be able to scissor the cut object arranged between the two blades, at least in the first blade The blade tip portion of the blade is configured so as to have a cutter posture that is exposed to the ridge side of the second blade, and the blade tip portion of the blade of the first blade is pressed against the object to be cut in the cutter posture. Scissors that can also be used as a cutter,
When using as a cutter in the cutter posture, the posture of the blade is guided so that the bisected virtual surface assumed between the blade front surface and the blade back surface of the blade tip portion is orthogonal to the surface of the object to be cut. It is equipped with a posture guidance means for
The posture guiding means includes a sensor for detecting the inclination of the bisector virtual surface, and a notification element for notifying the user that the inclination of the bisector virtual surface has reached a predetermined value. Scissors with a cutter function, which is a product. By opening and closing the first blade and the second blade having a blade, so as to be able to cut the object to be cut arranged between the two blades, at least in the first blade The blade tip portion of the blade is configured so as to have a cutter posture that is exposed to the ridge side of the second blade, and the blade tip portion of the blade of the first blade is pressed against the object to be cut in the cutter posture. Scissors that can also be used as a cutter,
When using as a cutter in the cutter attitude, guide the attitude of the blade such that a bisected virtual surface assumed between the blade surface and the blade back surface of the blade tip portion is orthogonal to the surface of the object to be cut. It is equipped with a posture guidance means for
The posture guiding means comprises a blade guard provided on the edge of the first blade,
Scissors with a cutter function, wherein the blade guard has a semi-cylindrical shape, and a marker is provided at a position to be pressed by a user who is used as a cutter.

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