JP5856586B2 - Cutting tool - Google Patents

Description

  The present invention cuts an object to be cut of a planar body such as a fine wire such as a fine lead wire or a binding wire of an electronic device such as nippers or pliers, and prevents the cut pieces from being scattered. The present invention relates to a cutting tool having a function.

  Various types of mechanisms have been known for preventing the falling and scattering of cut pieces that occur simultaneously with cutting in a nipper that has been widely used as a tool for cutting objects to be cut such as fine lead wires and binding wires. . For example, in the nipper described in Patent Document 1 (Japanese Patent Laid-Open No. 2005-261573), by mounting the opening of the cylindrical body behind the cutting blade, the cutting piece is stored in the cylindrical body to prevent scattering. It is what.

  Further, Patent Document 2 or Patent Document 3 discloses a nipper having a mechanism for holding and holding a cut piece at the same time as cutting as means for preventing scattering of the cut piece. Patent Document 2 (Japanese Patent Application Laid-Open No. 8-117457) discloses a nipper provided with a holding means having flexibility to prevent scattering of a cut piece by holding a cutting line between inclined surfaces of opposing blade parts. Has been.

  Patent Document 3 (Japanese Patent Application Laid-Open No. 2005-66078) includes a holding portion formed of a convex portion provided continuously to a cutting blade, and is configured by shifting the blade edge when the cutting blades are engaged with each other. A nipper that holds a cut piece between holding parts is disclosed.

JP 2005-261573 A JP-A-8-117457 JP 2005-66078 A

  However, when the nipper of Patent Document 1 is used for nail cutting or the like and the cut piece is fine, the cut piece generated by cutting can be prevented from being scattered by being stored in the cylinder, but the cut piece is long. In some cases, the cylinder interferes with the cut piece, and depending on the angle of use of the nippers, there is a problem that the cylinder hangs down and becomes unusable.

  The nipper of Patent Document 2 has a problem that the holding means is enlarged because the holding means is provided on the inclined surface of the cutting blade, and the holding means holds the cut piece by elastic deformation. Thereby, it is difficult to visually recognize the cutting blade portion of the cutting blade, and fine work becomes difficult. Further, since the clamping means is provided so as to recede outward from the edge of the cutting blade, there is a problem that a lead wire that is thinner than the gap between the clamping means cannot be clamped.

  The nipper of Patent Document 3 is for holding a cut piece by a holding portion formed of a convex portion provided continuously to the cutting blade, and can hold only a cut piece that fits the gap size of the holding portion. It was poor in nature. Further, it has been difficult to apply to a type in which a cutting blade is provided on the edge of the inclined surface of the pliers type due to its shape and cut by engaging the cutting blades.

  Therefore, the technical problem to be solved by the present invention is to provide a cutting tool that can reliably hold the cut piece regardless of the size or length of the cut piece.

  In order to solve the above technical problem, the present invention provides a cutting tool having the following configuration.

According to the first aspect of the present invention, the cutting blades having a predetermined length are arranged opposite to each other outside the pivoting portion that pivotally mounts the pair of gripping portions, and the gripping portion is opened and closed around the pivoting shaft. In the cutting tool capable of cutting the object to be cut by separating the cutting blade,
A pair of plate-shaped sandwiching portions that are configured by bending a single metal plate and have standing sandwiching surfaces standing at positions along the respective cutting blades, and the respective sandwiching portions are cut. A support portion that is movably supported in a direction intersecting with the extending direction of the blade, and the clamping portion and the support that are connected to the support portion and extend in a direction perpendicular to the pivot shaft and are fixed to the pivot shaft And a fold line between the clamping part and the support part is provided with a clamping member configured to be substantially parallel to the pivot shaft. Provide cutting tools.

  According to a second aspect of the present invention, there is provided the cutting tool according to the first aspect, characterized in that the support portion supports the end portion of the clamping portion so as to be rotatable and movable.

  According to the present invention, since the plate-like sandwiching portion is erected at a position along the cutting blade, when the cutting blades are engaged with each other, the sandwiching surfaces are brought into close contact with each other. At this time, since the cutting part is held by the support part so as to be movable in a direction intersecting the cutting blade, when the cutting blade closes when the cutting object is cut, it is sandwiched between the holding surfaces. Even after that, the cut piece can be maintained in its held state. Therefore, even when the holding portion is in close contact, the cutting operation by the cutting blade is not hindered, and the operability can be improved. Therefore, the cut piece can be reliably held regardless of the size and length of the cut piece.

  Furthermore, the support part supports the holding part so as to be movable in the direction intersecting the cutting blade, so that the holding part can be configured in a plate shape, and it is good during operation without concealing the blade edge. High visibility can be secured.

  According to the third aspect of the present invention, since the sandwiching portion and the support portion are configured by bending a single metal plate, it is easy to realize the movement of the sandwiching portion like a leaf spring with a simple configuration, and cutting. The piece can be securely held with an appropriate holding force.

  According to the fourth aspect of the present invention, it is possible to replace the holding member constituted by a member separate from the cutting tool, by attaching the holding member to the cutting tool, even when the holding portion is damaged. Further, by setting the attachment position as the pivot shaft, one set of clamping members can be attached at a time, and the configuration can be simplified.

It is a perspective view which shows the external appearance structure of the nipper concerning embodiment of the cutting tool of this invention. It is a perspective view which shows the state which opened the cutting blade of the nipper of FIG. It is an assembly exploded perspective view of the nipper of FIG. It is sectional drawing in the AA of FIG. It is sectional drawing in the BB line of FIG. It is a figure which shows the moving direction of the clamping part of the nipper of FIG. It is a perspective view which shows the structure of the right side clamping member used for the nipper of FIG. It is a perspective view which shows the structure of the left side clamping member used for the nipper of FIG. It is a partial expansion perspective view which shows the state in which the nipper of FIG. 1 has clamped the cutting piece. It is a partial expansion perspective view which shows the modification of the nipper concerning embodiment of the cutting tool of this invention.

  Hereinafter, a nipper according to an embodiment of the cutting tool of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an external configuration of a nipper according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the cutting blade of the nipper according to the embodiment is opened. The nipper 1 according to the present embodiment is configured such that a pair of left and right stays 2a and 2b are pivotally attached at an intermediate portion so as to be freely opened and closed.

  The pivotally attached portion 3 to which the pair of left and right stays 2a and 2b pivots is a pivotally pivotable pivotal shaft 3a that combines the left and right stays in the vertical direction. As shown in FIG. 5, the pivot shaft 3 a is fixed by fitting a shaft portion 3 b provided on the stay 2 a located on the lower side in the drawing to the stay 2 b located on the upper side in the drawing. Further, as will be described later, the shaft portion 3b is provided with a screw hole 3c for attaching the clamping members 7a and 7b.

  The stays 2a and 2b are formed in a rod shape, and a grip portion 4 and a blade portion 5 are provided at the ends thereof. The stays 2a and 2b are made of at least a metal from the blade part 5 to the pivot part 3 provided at the end part.

  The grip portion 4 is made of stainless steel, resin, or the like, and is configured by fixing the stay 2a integrally or separately. Further, the grip 4 may be provided with a non-slip material such as rubber or resin for reasons such as anti-slip.

  The blade portion 5 is provided in a concave groove 6 formed on the opposing side surfaces of the stays 2a and 2b, and the meshing portion of the blade portions 5 of the left and right stays 2a and 2b is a cutting blade 5a. As shown in FIG. 5, the blade portion 5 is provided to be inclined with respect to the extending direction of the stays 2 a and 2 b.

  The cutting blade 5a is provided with a predetermined length dimension in the extending direction of the stays 2a and 2b, and is configured to have a blade span of about 1.5 cm in this embodiment. In the present embodiment, the cutting blade 5a is configured in a straight line, but is not limited thereto, and may be configured in a curved line.

  Above the cutting blade 5a, a holding portion 8 made of a metal plate extending along the extending direction of the cutting blade 5a is erected. The sandwiching portions 8 are arranged so as to face each other, and the opposing surfaces are sandwiched surfaces. Moreover, although the lower end 8a of the clamping part 8 is provided close to the cutting blade 5a, it is arrange | positioned so that a slight clearance may be formed (refer FIG. 4).

  The holding portion 8 is supported by the support portion 9 so as to be movable in a direction intersecting with the extending direction of the cutting blade 5a. The support portion 9 is configured integrally with the holding portion 8 and is formed of a thin metal plate bent at an angle of about 90 degrees with respect to the holding portion. The fold line 9a is configured to be substantially parallel to the pivot shaft 3a.

  The sandwiching portion 8 and the support portion 9 configured as described above act like a leaf spring, and the support portion 8 extends in the extending direction of the cutting blade 5a as shown by an arrow 90 in FIG. Can be rotated in a direction intersecting with.

  As shown in FIG. 3, in the present embodiment, the sandwiching portion 8 and the support portion 9 are configured as a part of sandwiching members 7 a and 7 b that are detachably attached to the nipper 1. As shown in FIGS. 7 and 8, the sandwiching members 7 a and 7 b are configured by bending a single metal plate.

  As shown in FIGS. 7 and 8, the left and right holding members 7 a and 7 b constitute respective parts including a holding portion 8 and a support portion 9 by bending a single metal plate. As described above, the holding members 7a and 7b include the holding portion 8 and the support portion 9, as well as the attachment portion 10 and the shift prevention stopper 11. The metal plates constituting the left and right clamping members 7a and 7b may be any metal plate that can ensure the spring property at the bending line 9a described later, and a stainless steel plate, steel plate, aluminum plate having a thickness of about 0.2 to 1 mm is preferable. Used for. In the present embodiment, a 0.5 mm stainless plate is used.

  As shown in the figure, the sandwiching portion 8 is a flat plate having a substantially triangular shape, and a lower end 8a thereof is an inclined side along the inclination angle of the cutting blade 5a.

  The support portion 9 is a substantially trapezoidal member having a main surface perpendicular to the holding portion 8. The support portion 9 is accommodated in the concave groove 6 of the nipper so as to be close to the pivot attachment portion 3.

  The attachment portion 10 is provided in a state bent in the vertical direction with respect to the support portion 9 and is configured to be laminated on the upper surface of the pivotal attachment portion 3 of the nipper. The mounting portion 10 is provided with a screw insertion hole 10a.

  The slip prevention stopper 11 is for preventing the left and right clamping members 7a and 7b from shifting, and has an engagement wall 11a that can be engaged with the side surface of the neck portion 4a of the grip portion 4.

  As shown in FIG. 3, each clamping member 7a, 7b is provided on the pivot shaft 3a by laminating the right clamping member 7a on the left clamping member 7b and inserting screws 12 into the respective screw insertion holes 10a. The screw hole 3c is screwed.

  The clamping members 7 a and 7 b attached to the nippers have the engaging wall 11 a of the slip prevention stopper 11 engaged with the neck portion 4 a of the grip portion 4, and the support portion 9 and the holding portion 8 are the concave grooves 6 of the blade portion 5. Housed inside. The sandwiching portion 8 is arranged in a standing state so as to extend along the cutting blade 5a.

  When the gripper 4 of the nipper is opened and closed in this state, the holding members 7a and 7b and the stays 2a and 2b are integrally operated around the pivot shaft 3a by the slip prevention stopper 11. That is, even when the blade portion 5 is opened and closed in accordance with the opening and closing operation of the stays 2a and 2b, the holding portion 8 can be maintained along the cutting blade 5a.

  Note that it is not necessary to completely fix the sandwiching portion 8 above the cutting blade 5a. For example, a slight play can be allowed in the sandwiching portion 8 so that a large-diameter cutting piece can be sandwiched. For example, it is possible to allow the holding portion 8 to have play by adjusting the tightening strength of the screw 12 by providing the stopper 11 capable of preventing slippage to the neck 4a.

  By attaching the clamping members 7a and 7b to the pivot shaft 3a with screws as described above, the clamping members 7a and 7b can be easily detached, and the support portion 9 and the holding portion are placed at appropriate positions. 8 can be arranged. Therefore, even when the clamping members 7a and 7b have deteriorated over time, the support part 9 and the clamping part 8 can be arranged at appropriate positions by exchanging the clamping members 7a and 7b.

  FIG. 9 is a partially enlarged perspective view showing a state in which the nipper according to the present embodiment holds a cut piece. In order to cut the cutting object with the nipper according to the present embodiment, the gripping unit 4 is operated to place the cutting object between the cutting blades 5a of the blade part 5, and the cutting part 5 is closed by the cutting blade. Cut the object to be cut.

  At this time, before the blade part 5 meshes, the holding part 8 contacts the cutting object. When the blade portion 5 is further closed, the sandwiching portion 8 moves in a direction intersecting the extending direction of the cutting blade 5a with the folding line 9a as the center, and the operation of the blade portion 5 and the clamping of the object to be cut are performed. maintain. After the cutting object is cut by the blade part 5 in this state, the cutting piece 100 is sandwiched by the sandwiching part 8, so that the cutting piece 100 can be prevented from scattering and dropping off.

  FIG. 10 is a diagram illustrating a configuration of a nipper according to a modification. The nipper according to the modification employs a sandwiching portion 8 and a support portion 9 that are bent into an L shape, and the support portion 9 is directly fixed to the side wall 6a of the recessed groove 6 on the pivot shaft side. . By comprising in this way, a holding | grip part can be erected in the position along a cutting blade, and can be hold | maintained so that a movement in the direction which cross | intersects with a cutting blade is possible.

  As described above, according to the nipper according to the present embodiment, the plate-like sandwiching portion is erected at a position along the cutting blade, so that when the cutting blade is engaged, the holding surfaces of each other are in close contact with each other. To do. At this time, since the cutting part is held by the support part so as to be movable in a direction intersecting the cutting blade, when the cutting blade closes when the cutting object is cut, it is sandwiched between the holding surfaces. Even after that, the cut piece can be maintained in its held state. Therefore, even when the holding portion is in close contact, the cutting operation by the cutting blade is not hindered, and the operability can be improved. In addition, the support part supports the holding part so as to be movable in a direction intersecting the cutting blade, so that the holding part can be configured in a plate shape, and it is good at the time of operation without concealing the blade edge. High visibility can be secured.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. In the above embodiment, a nipper is used as an example of a cutting tool. Widely applicable.

  In addition to the configurations of the above-described embodiment and the modified example, the sandwiching portion and the support portion are configured so that the sandwiching portion is erected at a position along the cutting blade and intersects the cutting blade. The structure is not particularly limited as long as it can be held movably. For example, the support portion may be configured to be movable with the front end side of the holding portion as a rotation axis.

DESCRIPTION OF SYMBOLS 1 Nipper 2a, 2b Stay 3 Pivoting part 3a Pivoting shaft 4 Gripping part 5 Blade part 5a Cutting blade 6 Groove 7a, 7b Holding member 8 Nipping part 9 Supporting part 10 Attachment part 11 Slip prevention stopper

Claims (2)

A cutting blade having a predetermined length is disposed opposite to a pivoting portion that pivotally mounts a pair of gripping portions, and the cutting blade is separated from each other by opening and closing the gripping portion about the pivoting shaft. In a cutting tool capable of cutting an object to be cut,
A pair of plate-shaped sandwiching portions that are configured by bending a single metal plate and have standing sandwiching surfaces standing at positions along the respective cutting blades, and the respective sandwiching portions are cut. A support portion that is movably supported in a direction intersecting with the extending direction of the blade, and the clamping portion and the support that are connected to the support portion and extend in a direction perpendicular to the pivot shaft and are fixed to the pivot shaft And a fold line between the clamping part and the support part is provided with a clamping member configured to be substantially parallel to the pivot shaft. , Cutting tool.   2. The cutting tool according to claim 1, wherein the support portion supports the end portion of the sandwiching portion so as to be rotatable and movable with the end portion of the holding portion as a fulcrum.

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