JP2019181161A - Scissors - Google Patents

Abstract

To provide scissors capable of operating handles over a cutting object, and cutting it easily without destroying or breaking molding of the cutting object.SOLUTION: In scissors including a pair of handles, and a pair of blades opening/closing following opening/closing operation of the handles, when maintaining one blade, as a stationary blade, in parallel with a cut line which is a locus of a point generating shear of a cutting object, and shearing, while moving the other blade to the stationary blade, as a movable blade, a handle shaft for rotating the handles is constituted so as to be positioned over the cut line.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to scissors.

  In general, scissors connect a pair of members having a blade and a handle so as to intersect each other with a connecting shaft called a key. With this structure, the blade can be opened and closed by opening and closing the handle, and the object to be cut can be sheared.

  When the locus of the point at which shearing occurs on the object to be cut by the shearing force of the scissors blade is taken as the cutting line, one of the blades is located above the cutting line and the other is located below the cutting line. Similarly, one of the handles is positioned above the cutting line and the other is positioned below the cutting line.

  For this reason, when cutting an object placed on a horizontal plane, the object to be cut must be lifted up slightly, and one of the blade and one of the handles must be inserted below the object to be cut and cut at that position. .

  However, when the object lifted from the plane is cut with scissors, the handle must be gripped below the object to be cut, and it is difficult to operate the scissors. Further, when only the handle portion is lifted so as to be easy to operate, the tip portion on the opposite side of the handle is lowered, and the tip portion may damage the plane on which the object to be cut is placed.

  On the other hand, Cited Document 1 proposes a scissor in which a blade portion is formed so that the blade line is curved upward, and a guard body having an appropriate width and length is provided at the tip portion of the lower blade. . By providing the guard body at the tip portion of the lower blade, the tip portion does not damage the plane on which the object to be cut is placed when the handle portion is lifted as described above.

  Moreover, the cited reference 2 has proposed the gold-plated scissors formed so that not only a blade part but the whole scissors may be curved upward.

  Cited Document 3 proposes a cutter for cutting pizza. According to this pizza cutter, it is possible to cut without lifting the object to be cut.

Utility model registration No. 3213847 Utility model registration No. 3116357 JP-A-11-56214

  In the scissors of the cited documents 1 and 2, the blade portion and the handle portion are curved to form a curved shape as a whole, but the blade portion and the handle portion are not completely displaced, so the object must be lifted. There was no change. However, depending on the object to be cut, the lifting itself may not be preferable. In particular, when cutting ingredients (for example, bread dough, pie, pizza, plate seaweed), there are problems such as bending, damaging the surface, or losing shape.

  Further, in the scissors of the cited documents 1 and 2, since the handle portion is not completely positioned above the object to be cut, the handle of the scissors is opened and closed near the cutting line. For this reason, when a handle | steering-wheel or a finger | toe cut | disconnected the cut | disconnection surface, the shaping | molding of a dish may be destroyed, it may break, or a finger | toe may become dirty. Moreover, the blade was small with respect to the handle, and it had to be cut in small increments.

  The pizza cutter of Cited Document 3 can be cut without lifting the object to cut. However, this cutter has a problem of damaging the surface on which the cutting object is placed. Also, when cutting on a plate or the like, there was great concern because the hand slipped.

  The present invention has been made in view of the above-described problems, and does not break or break the modeling of the cutting object, and operates the handle above the cutting object without cutting the finger to cut the object. The purpose is to provide scissors.

  The present application includes a plurality of means for solving at least a part of the above-described problems. Examples of such means are as follows.

The scissors according to one aspect of the present invention include a pair of handles and a pair of blades that open and close with the opening and closing operation of the handles,
When one of the blades is fixed as a fixed blade and maintained parallel to the cutting line that is the locus of the point at which shearing of the object to be cut occurs, and the other blade is moved as a movable blade with respect to the fixed blade for shearing, A handle shaft for rotating the handle is located above the cutting line.

The scissors according to one embodiment of the present invention are:
A blade axis that pivotably connects the blades;
A handle shaft that pivotably connects the handles, and
A connecting shaft that rotatably connects one of the handles and one of the blades so that opening and closing of the blade and opening and closing of the handle are interlocked,
When shearing while maintaining the fixed blade parallel to the cutting line, the handle may be configured to be positioned above the object to be cut.

  The handle shaft may be provided 2 cm or more away from the cutting line.

  The connecting shaft may be provided at a substantially intermediate position between the blade shaft and the handle shaft.

  The blade axis may be provided away from the cutting line.

  The blade line of the movable blade may be convexly curved with respect to the cutting line.

  The blade line of the fixed blade may be concavely curved with respect to the cutting line.

  The cutting edge curve diameter R1 of the fixed blade may be larger than the cutting edge curve diameter R11 of the movable blade.

Cutting edge curve diameter R1 of the fixed blade: Cutting edge curve diameter R11 of the movable blade is from 1: 0.5 to 1: 0.8.
It may be.

  The movable blade and the fixed blade may intersect at an approximately equal angle at an arbitrary opening of the handle.

  Each time the movable blade and the fixed blade close the opening degree of the handle by a certain angle, the movable blade and the fixed blade may advance by a substantially constant distance.

  A plurality of substantially triangular triangular blades may be provided on the movable blade.

  A plurality of substantially triangular triangular blades may be provided on the fixed blade.

  In the triangular blade, the oblique side on the handle side may have an angle closer to the perpendicular to the blade line than the oblique side on the tip side.

  An elastic portion that urges the fixed blade and the movable blade to perform shearing while pressing the fixed blade and the movable blade at a predetermined angle with a predetermined force may be provided on a part of a side surface of the fixed blade or the movable blade.

The movable blade may be provided substantially perpendicular to the fixed blade.
A receiving plate may be provided on the fixed blade.
You may have the blade axis | shaft which can remove the said fixed blade and the said movable blade.
You may provide a roller in the front-end | tip part of the said fixed blade.

  ADVANTAGE OF THE INVENTION According to this invention, the scissors which can be easily cut | disconnected by operating a handle | steering-wheel above a cutting | disconnection object can be provided, without destroying or destroying the shaping | molding of a cutting | disconnection object.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a side view of the scissors by one Embodiment of this invention. It is the side view which showed the place which opened the front-end | tip part of scissors by one Embodiment of this invention. It is explanatory drawing which showed the state using the scissors by one Embodiment of this invention. It is explanatory drawing which showed the state using the scissors by one Embodiment of this invention. It is the side view which showed the place which opened the front-end | tip part of scissors by one Embodiment of this invention. It is the side view which showed the place which closed the front-end | tip part of scissors by one Embodiment of this invention. It is a front view of the scissors by one Embodiment of this invention. 4A, 4B, and 4C are exploded views of scissors according to an embodiment of the present invention. It is a side view of the scissors by one Embodiment of this invention. It is a side view of the scissors by one Embodiment of this invention. FIGS. 7A and 7B are a side view and a front view of a scissor according to an embodiment of the present invention. It is a side view of the scissors by one Embodiment of this invention. It is a front view of the scissors by one Embodiment of this invention. It is the side view which showed the place which opened the front-end | tip part of scissors by one Embodiment of this invention. It is a side view of the scissors by one Embodiment of this invention. FIG. 10A is a side view showing a state where the blade is opened until the movable handle of the scissors according to the embodiment of the present invention is positioned lower than the connecting shaft. 10 (B), (C), (D), and (E) are side views showing the blades closed to the inclined positions of 5 degrees, 15 degrees, 20 degrees, and 25 degrees, respectively. is there. It is explanatory drawing explaining the movement of the scissors blade by one Embodiment of this invention. It is explanatory drawing explaining the movement of the scissors blade by one Embodiment of this invention. It is a side view of the scissors by one Embodiment of this invention. 14 (A) and 14 (B) are explanatory views illustrating the operation of the scissors triangular blade according to one embodiment of the present invention. It is the side view which showed the place which opened the front-end | tip part of scissors by one Embodiment of this invention. It is the side view which showed the place which closed the front-end | tip part of scissors by one Embodiment of this invention. It is the side view and partial enlarged view of scissors by one Embodiment of this invention. It is a side view of the scissors by one Embodiment of this invention. It is a front view of the scissors by one Embodiment of this invention. It is a perspective view of the scissors by one Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof may be omitted. In the following embodiments, it is needless to say that the constituent elements are not necessarily indispensable except for the case where they are clearly indicated and the case where they are clearly considered to be indispensable in principle. In addition, when referring to “consisting of A”, “consisting of A”, “having A”, and “including A”, other elements are excluded unless specifically indicated that only that element is included. It goes without saying that it is not what you do. Similarly, in the following embodiments, when referring to the shapes, positional relationships, etc. of the components, etc., the shapes are substantially the same unless otherwise specified, or otherwise apparent in principle. And the like are included.

  FIG. 1A shows a side view of the scissors according to one embodiment of the present invention.

  As shown in FIG. 1A, the scissors 1 have a blade portion 2 and a handle portion 3. The part between the blade part 2 and the handle part 3 is referred to as a connection part 50 when it is necessary to particularly point.

  The blade part 2 has a fixed blade 4 and a movable blade 5. The fixed blade 4 and the movable blade 5 are rotatably connected by a blade shaft 6.

  The blade shaft 6 is provided on a substantially center line in a state where the fixed blade 4 and the movable blade 5 are combined.

  The handle portion 3 has a fixed handle 7 and a movable handle 8. The fixed handle 7 and the movable handle 8 are rotatably connected by a handle shaft 9.

  For example, the handle shaft 9 is provided on the upper portion of the blade shaft 6 with both blades closed and the blade surface leveled, and is provided on the upper portion of the blade shaft 6 by 1.5 cm to 5 cm, preferably 2 cm to 4 cm. Yes.

  Here, the fixed blade 4 refers to a blade when one of the blades is cut in parallel with a cutting line (a locus of points where shearing occurs on the object to be cut by the intersection of scissors blades). That is, the fixed blade 4 is referred to as a “fixed blade” in order to maintain an angle fixed with respect to the cutting line. The movable blade 5 refers to a blade that moves relative to the fixed blade 4. The fixed handle 7 is a handle formed integrally with the fixed blade 4. Since the cutting is performed with the fixed blade 4 at a constant angle, the angle of the fixed handle 7 is kept constant. The movable handle 8 is a handle that rotates in conjunction with the movable blade 5.

The movable blade 5 and the movable handle 8 are connected by a connecting portion 10 so as to rotate in conjunction with each other. The connecting portion 10 has a long hole 11 and a connecting shaft 12. The connecting shaft 12 is slidable within the long hole 11. By sliding the connecting shaft 12 in the long hole 11, it is possible to absorb the change in the distance between the three points of the connecting portion 10, the blade shaft 6 and the handle shaft 9 due to the rotation of the movable blade 5. .
The handle shaft 9 is provided away from the cutting line by 2 cm or more (for example, 2 to 4 cm). For example, a length that can secure a total distance of a half of the thickness to be cut and the width around the handle shaft of the handle portion 3 (that is, the width around which the handle portion 3 is fastened with the shaft). As described above, the handle shaft 9 only needs to be separated upward from the cutting line.
Specifically, for example, assuming that the pizza is cut, the total value of the pizza thickness of 1.5 cm and about 5 mm, which is 1/2 of the width of the handle portion 3 around the handle shaft, is 2 cm. Therefore, if the handle shaft 9 is provided 2 cm or more away from the cutting line, the handle portion 3 can be cut without hitting the food material.

  Here, the connecting part 10 is, for example, in front of the handle shaft (blade edge side) with both blades closed and the blade surfaces parallel, and is 1 cm to 4 cm forward from the handle shaft, preferably 1.5 cm to 3.3. It is provided 5 cm forward.

  FIG. 1B illustrates the action of the scissors 1 in an explanatory manner.

  As shown in FIG. 1B, when the scissors 1 are used, cutting is performed while maintaining the fixed blade 4 parallel to the cutting line 13. Since the fixed handle 7 is formed integrally with the fixed blade 4, it moves back and forth in parallel but does not rotate. On the other hand, the movable handle 8 rotates around the handle shaft 9. In conjunction with the rotation of the movable handle 8, the movable blade 5 rotates about the blade axis 6. The positional relationship among the blade shaft 6, the handle shaft 9, and the connecting portion 10 is arranged so that the movements of the blade portion 2 and the handle portion 3 are the same. That is, when the fixed handle 7 and the movable handle 8 are closed, the fixed blade 4 and the movable blade 5 are closed. Conversely, when the fixed handle 7 and the movable handle 8 are opened, the fixed blade 4 and the movable blade 5 are opened. Yes.

  When cutting, the tip of the scissors 1 on the opposite side of the handle is opened, the fixed blade 4 is inserted below a cutting object (not shown), and the fixed blade 4 is arranged in parallel with the cutting object. The movable blade 5 is positioned above the object to be cut. That is, the tip 15 of the fixed blade 4 is positioned below the cutting object, the tip 16 of the movable blade 5 is positioned above the cutting object, and the fixed blade 4 is positioned substantially parallel to the cutting object. Yes. The lowest position line of the movable handle 8 at this time is the lower position line 14. When the fixed handle 7 and the movable handle 8 are closed from the state in which the distal end portions 15 and 16 of the scissors 1 are opened, the movable blade 5 rotates downward and moves toward the fixed blade 4. When the movable blade 5 is closed, a shearing force acts on the object to be cut, and the cutting object is sheared and cut before the blade line 17 of the fixed blade 4 and the blade line 18 of the movable blade 5 intersect each other. The cutting line 13 is a line having a height at which shearing occurs on the cutting object (a locus of a point at which shearing occurs on the cutting object).

  When one cutting is finished, the fixed blade 4 and the movable blade 5 are opened again, and the fixed blade 4 is moved in parallel toward the tip portion 15. This again results in the state of FIG. 1B.

  As is apparent from FIG. 1B, according to the present invention, the blade portion 2 and the handle portion 3 of the scissors 1 are refracted. For this reason, the handle portion 3 can be operated by being completely positioned above the object to be cut. Even when the handle part 3 is opened and closed, the lowest position line 14 of the lowest position of the movable handle 8 is located above the cutting line 13 and can be operated by grasping the handle part 3 completely above the object to be cut. . Moreover, when pushing forward the scissors 1 after a single cut, the fixed blade 4 can be moved forward in parallel to the plane on which the object to be cut is placed by pushing forward without changing the angle of the fixed handle 7. . Thereby, the cutting | disconnection operation | movement is repeated smoothly and cutting | disconnection can be performed smoothly.

The handles here are in the form of a ring that both put fingers inside. On the other hand,
An opening / closing spring may be provided on the handle so that it opens when the hand is released.
Further, one or both may be formed into a rod shape.

  FIG. 2A shows a state in which the scissors 1 are used to start cutting while the pizza 19 is placed on the plate 20 as an example of food.

  As shown in FIG. 2A, in order to start cutting, the fixed blade 4 and the movable blade 5 are opened, and the tip 15 of the fixed blade 4 is inserted between the pizza 19 and the dish 20 (the state shown in FIG. 2A). Then, the fixed blade 4 is positioned below the pizza 19 in parallel with the pizza 19. In this case, since the width of the tip 15 of the fixed blade 4 is small, the fixed handle 7 and the movable handle 8 are held open by the finger 21 as shown in FIG. The tip 15 of the fixed blade 4 can be inserted between the pizza 19 and the dish 20 without any problem.

  After the fixed blade 4 is positioned below the pizza 19, the fixed blade 4 and the movable blade 5 are closed by grasping the fixed handle 7 and the movable handle 8, and the pizza 19 can be cut.

  FIG. 2B shows a state where the pizza 19 is cut while being placed on the plate 20. The state in which the fixed blade 4 is translated in the direction of the distal end portion 15 each time it is cut is shown while maintaining the blade line 17 of the fixed blade 4 parallel to the plate 20.

  As shown in FIG. 2B, according to the present embodiment, even when the movable handle 8 is opened, the height of the lowest position of the movable handle 8 is higher than the pizza 19. For this reason, operation of the handle | steering-wheel part 3 can be performed above the pizza 19 from beginning to end.

  Further, by pushing forward with the fixed blade 4 and the movable blade 5 open, the fixed blade 4 is continuously inserted below the pizza 19, so there is no need to lift the pizza 19.

  That is, according to the present embodiment, the handle can always be gripped above the pizza 19 and the operation is easy. Moreover, it can cut | disconnect, without changing a cutting target object with a plane body. Specifically, the pizza 19 does not need to be lifted, and the pizza 19 is not broken by lifting, or the cooked shape is not broken by tilting. Further, the finger or the handle portion does not hit the pizza 19, and the outer shape of the pizza 19 is not broken by the collision. Hygiene is also kept clean. Further, it is possible to prevent a sharp portion from being pushed against the plate 20 and to damage the surface of the plate 20. Here, the dish 20 is used, but the same applies to a hot plate or a cutting plate.

  Here, the cutting target is pizza, but the same applies to okonomiyaki, chige, and grilled meat, open fish and vegetables on a hot plate.

  FIG. 3A shows a side view of the scissors with the distal end opened according to one embodiment of the present invention. In the following description, the same parts as those described above may be denoted by the same reference numerals and redundant description may be omitted.

  As for scissors 1a of this embodiment, the fixed blade 4a and the fixed handle 7a are connected by the connection part 50, and are bent in the shape of a crank. The movable handle 8a is located above the fixed handle 7a. The fixed handle 7a and the movable handle 8a are rotatably connected by a handle shaft 9a. The fixed blade 4a and the movable blade 5a are rotatably connected by a blade shaft 6a. The connecting portion 10a is provided at a substantially intermediate position between the blade shaft 6a and the handle shaft 9a.

  For example, the handle shaft 9a is provided on the upper portion of the blade shaft 6a in a state where both blades are closed and the blade surface is horizontal, and is provided 2.5 cm to 6 cm above the blade shaft 6a, preferably 3 cm to 5 cm above. Yes.

  The connecting portion 10a has a hole 11a and a connecting shaft 12a. The hole 11a can absorb the change in the distance between the three points of the handle shaft 9a, the connecting portion 10a, and the blade shaft 6a due to the rotation of the movable blade 5a.

  In a state where the fixed blade 4a and the movable blade 5a are opened, the connecting portion 10a is positioned slightly closer to the handle portion 3a than the blade shaft 6a and the handle shaft 9a.

  FIG. 3B shows the side surface of the scissors 1a with the tip end closed.

  As shown in FIG. 3B, in a state where the fixed blade 4a and the movable blade 5a are closed, the connecting portion 10a moves slightly toward the blade portion 2a from the blade shaft 6a and the handle shaft 9a. Even in this structure in which the movable handle 8a is located above the fixed handle 7a, the movement of the fixed handle 7a and the movable handle 8a is synchronized with the movement of the fixed blade 4a and the movable blade 5a. That is, when the fixed handle 7a and the movable handle 8a are closed, the fixed blade 4a and the movable blade 5a are closed, and when the fixed handle 7a and the movable handle 8a are opened, the fixed blade 4a and the movable blade 5a are opened.

  The scissors 1a of this embodiment have a blade shaft 6a from which the fixed blade 4a can be removed. The blade shaft 6 a has a through hole 22 and a fitting portion 23. This removal function will be further described later.

  FIG. 3C shows the front of the scissors 1a.

  As shown in FIG. 3C, in the present embodiment, the elastic portion 24 is provided in the vicinity of the connecting portion 10a. The elastic portion 24 has a bent portion 25 located on the movable handle 8a side and a bent portion 26 located on the movable blade 5a. The elastic portion 24 is configured so that the movable blade 5a is slightly inclined by the bent portions 25 and 26, and the movable blade 5a is sheared at a predetermined angle with a predetermined force with respect to the fixed blade 4a. Yes.

  By doing in this way, the fixed blade 4a and the movable blade 5a do not slidably contact with the entire side surface, but generate a shearing force at one point where the blade lines intersect, and generate a sharp sharpness with a small force. be able to.

  FIG. 4 shows an exploded side view of the scissors according to one embodiment of the present invention.

  The blade shaft 6 a of this embodiment has a through hole 22 and a fitting portion 23. The through hole 22 has an elongated through part, and the fitting part 23 has a head that can penetrate the through hole 22. When removing the movable blade 5a, the hole 11a and the connecting shaft 12a are disconnected, the movable blade 5a is rotated approximately 90 degrees, the shapes of the through hole 22 and the fitting portion 23 are matched, and the blade shaft 6a is disconnected. . Thus, the movable blade 5a can be easily removed by making it possible to easily disconnect the blade shaft 6a. By detaching the movable blade 5a, the movable blade 5a and the fixed blade 4a can be cleaned, and can always be kept clean. In addition, dirt that tends to accumulate in the gaps between the members of the scissors 1a can be easily removed, so that it is also effective from the viewpoint of hygiene, particularly when cutting foods.

  Further, the method of fitting here is an example, and the method described here may not be necessary.

  FIG. 5 shows a side view of the scissors according to one embodiment of the present invention.

  The scissors 1b of this embodiment have a configuration similar to that of the scissors 1a of FIGS. 3 and 4, but have a roller 27 on the fixed blade 4b. The roller 27 is rotatably attached to the tip 15b of the fixed blade 4b by a shaft 28. The shaft 28 is provided slightly below the center line 29 of the width of the fixed blade 4b, and the lower part of the roller 27 protrudes slightly from the lower surface of the fixed blade 4b.

  As shown in FIG. 5, according to the scissors 1 b of the present embodiment, the roller 27 rolls, for example, on a dish surface, and it is easy to push the scissors 1 b by its action. In the present embodiment, the pizza 19 is lifted naturally by the advance of the scissors 1b and can be cut smoothly. Since the roller 27 protrudes slightly from the lower surface of the fixed blade 4b, the roller 27 rolls with respect to the plate of the pizza 19 (not shown). Without limiting, it is preferable to form the corner of the tip 15b of the fixed blade 4b round.

  FIG. 6 shows a side view of the scissors according to one embodiment of the present invention.

  The scissors 1c of the present embodiment have substantially the same configuration as the scissors 1b of FIG. 5, and have a roller 27c at the tip 15c of the fixed blade 4c. However, the shaft 28c of the roller 27c of the present embodiment is provided slightly above the center line 29c of the width of the fixed blade 4c, and the upper portion of the roller 27c protrudes slightly from the upper edge of the fixed blade 4c. Yes.

  Also in the present embodiment, the pizza 19 is naturally lifted by the advance of the scissors 1c, and the roller rolls on the lower surface of the pizza, and can be cut smoothly. Since the roller 27c protrudes slightly from the upper edge of the fixed blade 4c, the roller 27c rolls with respect to the pizza 19. Without limiting, it is preferable to form the corner of the tip 15c of the fixed blade 4c round.

  FIG. 7 shows scissors 1d according to another embodiment of the present invention.

  In FIG. 7, the movable blade is not shown for easy understanding. The figure shows the side and front of the scissors 1d. A movable blade (not shown) is rotatably connected to the fixed blade 4d by a removable blade shaft 6d. The blade shaft 6d has a through hole 22 similar to that shown in FIG. The movable blade (not shown) can be the same as the movable blade 5a in FIG. 3A.

  In the scissors 1d in FIG. 7, a receiving plate 30 is provided on the fixed blade 4d. The receiving plate 30 is provided horizontally at the lower part of the side surface of the fixed blade 4d opposite to the movable blade. The receiving plate 30 may be a separate member attached to the fixed blade 4d or may be removed. Alternatively, a part of the fixed blade 4d may be bent.

  The scissors 1d have a resilient portion 24 that allows the fixed blade 4d and the movable blade (not shown) shown in FIGS. 3A, 3B, and 4 to perform shearing while pressing each other with a predetermined force at a predetermined angle. ing.

  According to this embodiment, when cutting a pizza or the like, the cut piece is placed on the backing plate 30 and can be separated as it is.

  Here, although the planar shape of the receiving plate 30 is not illustrated, it may be a triangle, a rectangle, an ellipse, or the like, and the plate may be a mesh, a duckboard, or a wire bent.

  FIG. 8A shows the side of the scissors with its tip closed according to another embodiment of the present invention. FIG. 8B shows the front of the scissors with the tip end closed. FIG. 8C shows a side surface of the scissors with the tip portion opened. The following description will become apparent with reference to FIGS. 8A-8C.

  The scissors 1e of this embodiment are provided with the fixed blade 4e substantially horizontally and the movable blade 5e substantially vertically with respect to the fixed blade 4e. The edge of the fixed blade 4e that is in sliding contact with the movable blade 5e is an acute blade.

  While the fixed blade 4d of FIG. 7 has a substantially L-shaped cross section, the fixed blade 4e of the present embodiment is horizontal, so that the cutting object can be cut at an extremely low position. It has become. The blade of the fixed blade 4e is formed by acutely forming the edge of the side in sliding contact with the horizontal movable blade 5e. The movable blade 5e has a right-angled contact blade structure that cuts while vertically contacting the fixed blade 4e.

  According to this embodiment, since the fixed blade 4e is a horizontal plane, there is no need to lift the cutting object from the start to the end of cutting. Furthermore, after cutting, the fixed blade 4e itself serves as a tray, so that the cut ones can be separated as they are. According to the scissors 1e of the present embodiment, the scissors 1e can be suitably used for a cooked food that is particularly worried about breaking the modeling. Further, the receiving blade portion shown in FIG. 7 may be provided as a separate member on the fixed blade 4e, and the shape and the like are the same as in FIG.

  FIG. 9 shows a side view of the scissors according to another embodiment of the present invention.

  The scissors 1f of the present embodiment have a structure in which a pair of members each having a blade and a handle are rotatably connected by a connecting portion 10f. Here, among the blades of the scissors 1f, the blade that is sheared while being maintained parallel to the cutting line 13 is referred to as a fixed blade 4f. The fixed blade 4 f is referred to as a “fixed blade” in order to keep the angle fixed with respect to the cutting line 13. A blade that moves relative to the fixed blade 4f is referred to as a movable blade 5f. As described above, the cutting line 13 is a locus of points at which shearing occurs on the cutting object when the scissors blades cross and close. A pair of blades 4f and 5f are opened and closed in accordance with the opening and closing operation of the pair of handles 7f and 8f.

  The scissors 1f have a blade portion 2f and a handle portion 3f. A handle formed integrally with the fixed blade 4f is called a fixed handle 7f, and a handle formed integrally with the movable blade 5f is called a movable handle 8f.

  The fixed blade 4f and the fixed handle 7f are connected by a relatively long connecting portion 50, and are formed in a substantially crank shape as a whole. The movable blade 5f and the movable handle 8f are formed in a substantially crank shape that is slightly shallower than the fixed side. Both members are connected by a connecting portion 10f and can rotate about a connecting shaft 12f of the connecting portion 10f. 9 and later-described embodiments of FIGS. 10, 13, 16, and 17, the connecting shaft functions as a handle shaft that rotates the handle and also functions as a blade shaft that rotates the blade. It also functions.

As illustrated in FIG. 9, the handle shaft 12 f is provided farther from the vicinity of the cutting line 13 than the conventional vicinity of the cutting line 13 due to the connecting portion 50 and the crank shape. With this configuration, the horizontal line 31 passing through the connecting portion 10f is higher than the cutting line 13 by a height h1.
The handle shaft 12f is provided 2 cm or more away from the cutting line (for example, 2 to 4 cm). For example, a length that can secure a total distance of 1/2 of the thickness to be cut and the width around the handle shaft of the handle portion 3f (that is, the width around the handle portion 3f to be secured with the shaft). As described above, the handle shaft 12f only needs to be separated upward from the cutting line.
Specifically, for example, assuming that the pizza is cut, the total value of the pizza thickness of 1.5 cm and about 5 mm, which is 1/2 of the width of the handle portion 3 around the handle shaft, is 2 cm. Therefore, if the handle shaft 9 is provided 2 cm or more away from the cutting line, the handle portion 3 can be cut without hitting the food material.

  In the present embodiment, the axis of the connecting portion 10f is an axis for rotating the blade portion 2f and an axis for rotating the handle portion 3f. When the shaft that rotates the handle portion 3f is sheared while maintaining one of the blade portions 2f (the fixed blade 4f) in parallel with the cutting line 13 that is the locus of the point at which shearing of the object to be cut occurs, the cutting line 13 is located above.

  Since the connecting shaft 12f is provided away from the cutting line 13, as shown in FIG. 9, the point m1 on the blade line 18f of the movable blade 5f rotates at a radius r1 to rotate the blade line 17f of the fixed blade 4f. The upper point m1 ′ is reached. Similarly, the point m2 on the blade line 18f of the movable blade 5f rotates at the radius r2 and reaches the point m2 'on the blade line 17f of the fixed blade 4f. The angle at which the locus of the point m1 and the cutting line 13 intersect is larger than the angle at which the locus of the point m2 and the cutting line 13 intersect. The distance from the point m1 to the point m2 on the blade line 18f of the movable blade 5f is longer than the distance from the point m1 'to the point m2' on the blade line 17f of the fixed blade 4f. For this reason, the movable blade 5f passes through the cutting line 13 while slicing with respect to the fixed blade 4f. By performing shearing while slicing, sharpness can be increased as compared to simple shearing.

  Furthermore, in the present embodiment, the blade line 18 f of the movable blade 5 f is curved convexly with respect to the cutting line 13. The blade line 17 f of the fixed blade 4 f is curved concavely with respect to the cutting line 13. Specifically, in the present embodiment, the blade line 18f of the movable blade 5f is an arc having a radius R1 (about 13 cm) and is convexly curved with respect to the cutting line 13, and the blade line 17f of the fixed blade 4f is a radius. It is an arc of R11 (about 20 cm) and is concavely curved with respect to the cutting line 13. The blade line 18f and the blade line 17f are not limited to the case where both are curved, and one of them may be curved. By appropriately adjusting the curvatures of the blade line 18f and the blade line 17f, the movable blade 5f and the fixed blade 4f can intersect at an equal angle at any opening of the fixed handle 7f and the movable handle 8f. Further, by appropriately adjusting the curvatures of the blade line 18f and the blade line 17f, the fixed handle 7f and the movable handle 8f can be moved forward by a certain distance each time the opening of the fixed handle 7f and the movable handle 8f is closed by a certain angle. This will be described with reference to FIGS. 10A to 10E and FIGS. 11 and 12. FIG.

  10A to 10E show a state in which the movable handle 8f is moved in the closing direction, and an angle of the movable handle line 32 connecting the grip point of the movable handle 8f and the connecting shaft 12f with respect to the horizontal line 31 passing through the connecting shaft 12f. Are closed at the first open angle (FIG. 10A), 5 degrees (FIG. 10B), 15 degrees (FIG. 10C), 20 degrees (FIG. 10D), and 25 degrees (FIG. 10E).

  First, using FIG. 11 and FIG. 12, it will be described that the blade line 18f of the movable blade 5f and the blade line 17f of the fixed blade 4f can be sheared while slicing each other, and the intersecting angle θ0 can be changed.

Here, for example, the height h1 from the cutting line 13 is about 3 cm, and the blade length L is about 7 cm.
An example is shown in which the fixed cutting edge radius R1 is approximately 20 cm and the movable cutting edge radius R11 is approximately 13 cm. In this way, by setting the fixed cutting edge curve diameter R1> the movable cutting edge curve diameter R11 or R1: R11 to 1: 0.5 to 1: 0.8, the movement shown in FIG. 10 can be realized.

  In FIG. 11, it is assumed that the blade line 18f of the movable blade 5f is on the arc of the movable circle 33 with respect to the blade line 17f of the fixed blade 4f. The connecting shaft 12f is located at a location eccentric from the center of the movable circle 33.

  FIG. 12 shows a state where the movable circle 33 rotates around the connecting shaft 12f. FIG. 12 shows a state in which the movable circle 33 is rotated by a certain angle around the connecting shaft 12f and moved to a position 33-1, a position 33-2, and a position 33-3. At this time, the blade line 18f of the movable blade 5f moves to a position 18f-1, a position 18f-2, and a position 18f-3, respectively.

  The distance that the blade line 18f of the movable blade 5f rubs the blade line 17f of the fixed blade 4f is, as is apparent from the drawing, the position 33-1 despite the fact that the movable circle 33 rotates at a constant angle. The distance rubbed for each of the position 33-2 and the position 33-3 is extended. That is, it can be seen that when the movable blade 5f rotates at a constant angle, the rubbing distance with the fixed blade 4f is extended, and cutting is performed while slicing.

  In the example of FIG. 11, the distance (height) h1 between the connecting shaft position O ′ and the cutting line 13 is about 3 cm, and the eccentric distance R2 between the connecting shaft position O ′ and the center O of the arc of the movable blade is about 2. It has been explained that the radius R1 of the arc of the movable blade is about 6 cm and the length L of the blade of the movable blade is about 7 cm, but the positional relationship can be determined as appropriate within the following range.

  That is, the length L of the movable blade is 5 cm to 15 cm (preferably 6 cm to 12 cm), and the distance (height) h1 between the position O ′ of the connecting shaft and the cutting line 13 is 2 cm to 7 cm (preferably from 2.5 cm). 5 cm), the radius R1 of the arc of the movable blade line (18f) is 8 cm to 23 cm (preferably 9 cm to 18 cm), and the eccentricity of the position O ′ of the connecting shaft and the center O of the arc of the movable blade line (18f). The distance R2 can be appropriately determined within a range of 0.3 or more (preferably 0.4 to 1.0) of the radius R1.

  Further, by changing the curvature of the movable circle 33, the angle at which the blade line 18f and the blade line 17f intersect changes. That is, by changing the shape of the curve of the line 17F from the blade line 18F, it is possible to change the angle at which the blade line 18f and the blade line 17f intersect and the distance to be cut.

  For this reason, by designing and selecting the shapes of the curved lines of the blade line 18f and the blade line 17f, as shown in FIG. 10, the movable handle 8f is rotated at a constant angle, so that the constant distances L1, L2, and L3 are reduced. You can cut forward. Further, regardless of the opening (rotation angle) of the movable handle 8f, the angle θ0 at which the blade line 17f and the blade line 18f intersect can be made constant.

  In addition, it is possible to design and select either one of making the cutting distance constant and making the angle at which the blade line 17f and the blade line 18f intersect constant. Moreover, you may make it provide the curve of the blade line 18f and the blade line 17f only in any one blade line.

  In the conventional scissors, when the handle is rotated at a certain angle, the distance that the blade advances is increased. Therefore, the faster you go to the tip of the scissors, the faster you can cut. On the other hand, if the distance for cutting is made constant according to the present invention, the operation of the handle and the distance for cutting the blade become equal, and the cutting object can be cut accurately.

  Further, in the conventional scissors, when the handle is rotated at a certain angle, the angle at which the blades intersect at the tip of the blade becomes small and the cutting point becomes far away, so that a large force is required for cutting. . However, according to the present invention, regardless of the opening degree (rotation angle) of the movable handle 8f, if the angle θ0 at which the blade line 17f and the blade line 18f intersect is made constant, the blade can be cut with a constant force. In this case, only the moment increases, and the force for shearing can be reduced.

  Here, an example in which the operation of the handle is equal to the distance that the blade cuts is shown, but by changing the curved shape of the fixed blade and the movable blade, changing the shape such as distorting, or combining them, A wide range of applications is possible, such as locally changing the operation and the distance that the blade advances.

  FIG. 13 shows a side view of the scissors according to another embodiment of the present invention.

  The scissors 1g of the present embodiment has a configuration similar to the scissors 1f of FIG. That is, the blade portion 2g, the handle portion 3g, the fixed blade 4g, the movable blade 5g, the fixed handle 7g, the movable handle 8g, the connecting portion 10g, the connecting shaft 12g, the blade wire 17g, and the blade wire 18g. And the connection part 50 is provided. In particular, as a difference, a plurality of substantially triangular triangular blades 35 are provided on the movable blade 5g.

  The triangular blades 35 are provided continuously along the blade line 18g, and each triangular blade 35 has an angle (the handle side oblique side 36 is closer to perpendicular to the blade line 18g than the distal side oblique side 37) ( θ2> θ1). The operation of the triangular blade 35 will be described later.

  As with the scissors 1f, the scissors 1g have a configuration in which the blade line 18g of the movable blade 5g is curved convexly with respect to the cutting line 13, and the blade line 17g of the fixed blade 4g is curved concavely with respect to the cutting line 13. It has become. By adjusting the curve shape of the blade line 17g and the blade line 18g, the angle of intersection of the blade line 17g and the blade line 18g can be made constant regardless of the opening degree of the handle, or every time the handle is closed by a certain angle. The operational effects such as being able to cut a certain distance are as described with reference to FIGS.

  FIG. 14 is a diagram illustrating the operation of the triangular blade 35 of the scissors 1g.

  As shown in the upper part of FIG. 14, when the food 39 has a fine shape, it can be caught and cut in the valleys of the triangular blade 35. In the present embodiment, the triangular blade 35 has an oblique side 36 on the handle side having an angle close to perpendicular to the blade line as compared to the oblique side 37 on the tip side. As described above, in the present embodiment, the movable blade 5g has a movement of slicing with respect to the fixed blade 4g. For this reason, it is easy to catch the foodstuff 39 in the valley of the triangular blade 35, and it can cut | disconnect the foodstuff 39 without escaping, and can cut | disconnect efficiently.

  As shown in the lower part of FIG. 14, when the food material 40 is larger than the triangular blade 35, the force concentrates on the vertex 38 of the triangular blade 35, so that the food material 40 can be captured. Since the apex 38 has a sharp shape, the apex 38 cuts into the food 40 by closing the handle, and can be efficiently cut by the action of subsequent shearing or slicing.

  FIG. 15A shows a side view of the scissors with the tip portion opened according to another embodiment of the present invention. FIG. 15B shows the side surface of the scissors when the tip is closed.

  The scissors 1h of the present embodiment have a structure that is substantially the same as the scissors 1a of FIGS. 3A, 3B, and 4. That is, the blade portion 2h, the handle portion 3h, the fixed blade 4h, the movable blade 5h, the fixed handle 7h, the movable handle 8h, the blade shaft 6h, the handle shaft 9h, the connecting portion 10h, and the hole 11h The connecting shaft 12h and the connecting portion 50 are provided. Particularly, as a difference, the connecting portion 50 is extended as compared with the scissors 1a, and the blade shaft 6h is provided at a position away from the cutting line 13.

  By providing the blade shaft 6h away from the cutting line 13, there is a distance from the blade shaft 6h to the blade line 18h of the movable blade 5h. For this reason, when the movable blade 5h rotates around the blade axis 6h, the blade line 18h of the movable blade 5h is cut while slicing with respect to the cutting line 13, as is apparent by comparing FIGS. 15A and 15B. can do. By this movement, in addition to a normal shearing force, cutting by a slice is added, and the sharpness can be increased.

  Furthermore, in this embodiment, a plurality of substantially triangular triangular blades 35h are provided on the blade line 18h of the movable blade 5h. As already described, the triangular blade 35h captures the cutting object so as not to escape, and has an action of cutting into the cutting object by the apex of the triangular blade 35h. The sharpness can be further increased.

  Further, in the scissors 1 h of this embodiment, the blade line 17 h of the fixed blade 4 h is curved concavely with respect to the cutting line 13. Further, the blade line 18 h of the movable blade 5 h is curved convexly with respect to the cutting line 13.

  As already described, by adjusting the shape of the curve of the blade line 17h of the fixed blade 4h and the blade line 18h of the movable blade 5h, the crossing angle between the blade lines is made constant and fixed to the tip 16h of the movable blade 5h. The shearing force in the vicinity of the tip 15h of the blade 4h can be reduced. Further, by adjusting the curve shape of the blade line 17h of the fixed blade 4h and the blade line 18h of the movable blade 5h, every time the fixed handle 7h and the movable handle 8h are closed by a certain angle, the fixed blade 7h is cut by a predetermined distance. be able to. Thereby, scissors with easy cutting control can be obtained.

  In this embodiment, the triangular blade 35h is provided only on the movable blade 5h, but may be provided also on the fixed blade 4h.

  FIG. 16 shows a side view of the scissors according to another embodiment of the present invention with its tip portion opened.

  The scissors 1i of the present embodiment have a structure that is substantially the same as that of the scissors 1f of FIG. That is, the blade portion 2i, the handle portion 3i, the fixed blade 4i, the movable blade 5i, the fixed handle 7i, the movable handle 8i, the connecting portion 10i, the connecting shaft 12i, the blade line 17i, and the blade line 18i. And the connection part 50 is provided. In particular, as a difference, a plurality of substantially triangular triangular blades 35i are provided on the blade line 18i of the movable blade 5i. In the present embodiment, a plurality of substantially triangular triangular blades 35i are also provided on the blade line 17i of the fixed blade 4i. In the present embodiment, the fixed blade 4 i and the fixed handle 7 i are connected by the relatively long connection portion 50 and are formed in a substantially crank shape, so that the connecting portion 10 i is separated from the cutting line 13.

  As already described, the triangular blade 35i has a function of capturing the cutting object so as not to escape and cutting the cutting object into the cutting object by the apex of the triangular blade 35i. Moreover, it has the effect | action which slices similarly to the scissors 1f, and the sharpness can be further increased by combining the triangular blade 35i and the slice cutting.

  Furthermore, in this embodiment, the inclined surface 42 and the inclined surface 43 are provided in the hypotenuse of the triangular blade 35i. The inclined surface 42 and the inclined surface 43 have a function of making the oblique sides and apexes of the triangular blade 35i sharper and discharging the cut pieces to the outside. Thereby, the cut surface can be kept clean by cutting sharply and opening the cut surface.

  The aforementioned triangular blades tend to bite each other in the vicinity of the valleys of the triangular blades by meshing.

  Even on only one side, the concave curved blade tends to bite.

  For this reason, it can prevent by chamfering the inside of a blade and providing a blade escape.

  In addition, in this embodiment, the connection part 10i has the connection shaft 12i which can be removed, the fixed blade 4i and the movable blade 5i can be disassembled easily, dirt can be easily removed, and it can be used hygienically.

  FIG. 17A shows the side of the scissors with its tip closed according to another embodiment of the present invention. FIG. 17A shows the front of the scissors when the tip is closed. FIG. 17C shows a perspective view of the scissors. This will be described below with reference to these drawings.

  The scissors 1j of the present embodiment have a structure substantially similar to the scissors 1i of FIG. That is, the blade portion 2j, the handle portion 3j, the fixed blade 4j, the movable blade 5j, the fixed handle 7j, the movable handle 8j, the connecting portion 10j, the connecting shaft 12j, the triangular blade 35j, and the connecting portion 50. It has. In particular, as a difference, a resilient portion 45 is provided at the connecting portion 50 between the movable blade 5j and the movable handle 8j.

  The elastic portion 45 includes a bent portion 46 in which a part of the connecting portion 50 is once bent outward and then bent inward again. As shown in FIG. 17B, the movable blade 5 j comes into contact with the fixed blade 4 j at an angle and is urged by the bent portion 46 by the elastic force of the elastic portion 45. Yes. Thereby, at the time of shearing, the fixed blade 4j and the movable blade 5j intersect at one point without a gap and can be cut sharply.

  In the present embodiment, the movable blade 5j has a plurality of triangular blades 35j. The triangular blade 35j is provided with an inclined surface on the hypotenuse, like the triangular blade 35i of FIG. By providing the inclined surface, the hypotenuse and the apex of the triangular blade 35j become sharper, and the cut edge is discharged to the outside, whereby the object to be cut can be cut sharply and cleanly.

  Further, the scissors 1j have a detachable connecting portion 10j and a connecting shaft 12j, the fixed blade 4j and the movable blade 5j can be easily disassembled, and dirt can be removed and used hygienically.

  Based on the above description, those skilled in the art may be able to conceive additional effects and various modifications of the present invention, but the aspects of the present invention are not limited to the above-described embodiments. Various additions, modifications, and partial deletions can be made without departing from the concept and spirit of the present invention derived from the contents defined in the claims and equivalents thereof.

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j: scissors 2, 2a, 2b, 2c, 2e, 2f, 2g, 2h, 2i, 2j: blades 3, 3a, 3b 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j: Handle portions 4, 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4j: Fixed blades 5, 5a, 5b, 5c 5e, 5f, 5g, 5h, 5i, 5j: movable blades 6, 6a, 6b, 6c, 6d, 6e, 6h: blade shafts 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g, 7h, 7i 7j: Fixed handles 8, 8a, 8b, 8c, 8d, 8e, 8f, 8g, 8h, 8i, 8j: Movable handles 9, 9a, 9b, 9c, 9d, 9e, 9h: Handle shafts 10, 10a, 10b 10c, 10d, 10e, 10f, 10g, 10h, 10i, 1 j: connecting portions 11, 11a, 11e, 11h: long holes 12, 12a, 12d, 12e, 12f, 12g, 12h, 12i, 12j: connecting shaft 13: cutting line 14: lower position lines 15, 15b, 15c, 15h , 16, 16h: tips 17, 17a, 17d, 17f, 17g, 17h, 17i, 18, 18f, 18g, 18h, 18i: blade line 19: pizza 20: dish 21: finger 22: through hole 23: fitting Part 24: elastic part 25, 26: bent part 27, 27c: roller 28, 28c: shaft 29, 29c: center line 2a, 2f: blade part 30: backing plate 31: horizontal line 32: movable handle line 33: movable circle 35, 35h, 35i, 35j: triangular blades 36, 36i, 37, 37i: hypotenuses 38, 38i: apex 39: food 40: food 42, 43: inclined surface 45: elastic part 46: bent part 50 The connecting portion

Claims (19)

A pair of handles and a pair of blades that open and close with the opening and closing operation of the handle,
When one of the blades is fixed as a fixed blade and maintained parallel to the cutting line that is the locus of the point at which shearing of the object to be cut occurs, and the other blade is moved as a movable blade with respect to the fixed blade for shearing, A scissor characterized in that a handle shaft for rotating the handle is located above the cutting line. A blade axis that pivotably connects the blades;
A handle shaft that pivotably connects the handles, and
A connecting shaft that rotatably connects one of the handles and one of the blades so that opening and closing of the blade and opening and closing of the handle are interlocked,
The scissors are configured so that the handle is positioned above the object to be cut when shearing while maintaining the fixed blade parallel to the cutting line.   The scissors according to claim 1 or 2, wherein the handle shaft is provided 2 cm or more away from the cutting line.   The scissors according to claim 2, wherein the connecting shaft is provided at a substantially intermediate position between the blade shaft and the handle shaft.   The scissors according to any one of claims 2 to 4, wherein the blade axis is provided away from the cutting line.   The scissors according to any one of claims 1 to 5, wherein a blade line of the movable blade is convexly curved with respect to the cutting line.   The scissors according to claim 1, wherein a blade line of the fixed blade is concavely curved with respect to the cutting line.   The scissors according to claim 7, wherein a cutting edge curve diameter R1 of the fixed blade is larger than a cutting edge curve diameter R11 of the movable blade. Cutting edge curve diameter R1 of the fixed blade: Cutting edge curve diameter R11 of the movable blade is from 1: 0.5 to 1: 0.8.
The scissors according to claim 8, wherein:   The scissors according to any one of claims 1 to 9, wherein the movable blade and the fixed blade intersect at an approximately equal angle at an arbitrary opening of the handle.   The scissors according to any one of claims 1 to 9, wherein the movable blade and the fixed blade advance by a substantially constant distance every time the opening of the handle is closed by a certain angle.   The scissors according to claim 1, wherein a plurality of substantially triangular triangular blades are provided on the movable blade.   The scissors according to claim 1, wherein a plurality of substantially triangular triangular blades are provided on the fixed blade.   14. The triangular blade has an oblique angle on a handle side that is closer to being perpendicular to a blade line than an oblique side on a tip end side. 14. Scissors.   An elastic part that urges the fixed blade and the movable blade to perform shearing while pressing the fixed blade and the movable blade at a predetermined angle with a predetermined force is provided on a part of a side surface of the fixed blade or the movable blade. The scissors according to any one of claims 1 to 14.   The scissors according to any one of claims 1 to 15, wherein the movable blade is provided substantially perpendicular to the fixed blade.   The scissors according to claim 1, wherein a receiving plate is provided on the fixed blade.   The scissors according to claim 1, wherein the scissors have a blade shaft from which the fixed blade and the movable blade can be detached.   The scissors according to any one of claims 1 to 18, wherein a roller is provided at a tip of the fixed blade.

Images