JP2021168754A - Cutter and cutter holding tool - Google Patents

Abstract

To provide a cutter and a cutter holding tool which prevent erroneous cutting of an object other than a cutting object.SOLUTION: A cutter holding tool 10 includes at least a body 12, a holding part 14, and energization means. The body 12 is configured so as to be held by a user. The holding part 14 is configured so as to hold a cutter in the body 12 so that a cutter blade is exposed from the body 12. The energization means has a spring 22 configured so as to energize the holding part 14 in a pressing direction of a cutter 100 against a cut object in the body 12. Furthermore, the holding part 14 is slidably held by a first holding part 141 fixed to the body 12 and the body 12, and has a second holding part 142 energized by the spring 22. The second holding part 142 is configured so as to retreat in a direction opposite to the pressing direction when force applied to the cutter blade reaches a predetermined value.SELECTED DRAWING: Figure 2

Description

The present invention relates to a cutter and a cutter holder capable of preventing accidental cutting of anything other than an object to be cut.

Cutters are widely used as cutting tools in manufacturing sites such as homes and factories. By the way, when using a cutter, it is common to lay a cutter mat or the like under the object to be cut so as not to damage anything other than the object to be cut. However, in a situation where the cutter has to be used without the cutter mat being laid, there is a risk of cutting something other than the object to be cut or injuring the user.

Therefore, among the conventional cutters, there are some that can adjust the protrusion amount of the cutter blade (see, for example, Patent Document 1). With this cutter, the user can adjust the amount of protrusion of the cutter blade by means of urging, so the cutter blade may cut anything other than the object to be cut, or injure the user or a third party. Is said to be preventable.

JP-A-2016-043122

However, in the above-mentioned conventional cutter, the user needs to adjust the protrusion amount of the cutter blade. Therefore, depending on the skill level of the user, the amount of protrusion of the cutter blade cannot be adjusted appropriately, and there is a risk that the base or the like may be erroneously damaged. Further, the cutter described in the prior art has a complicated structure, and it is difficult to apply it to an existing cutter or the like. Further, since the shape of the cutter is different from that of a known cutter, it takes time for the user to get used to the cutter, and it is difficult to use the cutter suitably.

An object of the present invention is to provide a cutter and a cutter holder that prevent accidental damage to anything other than the object to be cut.

The cutter according to the present invention includes at least a cutter blade, a holding portion, and an urging portion. The holding portion is configured to slidably hold the cutter blade. The urging portion has a spring configured to urge the cutter blade in the pressing direction of the cutter. Further, the urging portion is configured to slide along the sliding direction of the cutter blade and retract the cutter blade in the direction opposite to the pressing direction when the force applied to the cutter blade reaches a predetermined value.

In this cutter, the urging portion holds the cutter blade by urging the cutter blade with a predetermined urging force. When the user presses the cutter blade against the object to be cut with a force exceeding the urging force of the urging portion, the cutter blade is pushed up against the urging force in the direction opposite to the pressing direction. As a result, even if the user exerts too much force, it is possible to prevent cutting of anything other than the object to be cut. Since the cutter blade is automatically retracted by the urging portion, the cutter can be used regardless of the skill level of the user. As the spring, it is possible to use a spring having a different urging force depending on the object to be cut.

The cutter holder according to the present invention is configured to hold a cutter having a cutter blade, and includes at least a main body portion, a holding portion, and an urging means. The main body is configured to be gripped by the user. The holding portion is configured to hold the cutter in the main body portion so that the cutter blade is exposed from the main body portion. The urging means has a spring configured in the main body to urge the holding portion with respect to the pressing direction of the cutter against the object to be cut. Further, the holding portion has a first holding portion fixed to the main body portion and a second holding portion that is slidably held with respect to the main body portion and is urged by the urging means. Further, the second holding portion is configured to retract in the direction opposite to the pressing direction when the force applied to the cutter blade reaches a predetermined value.

This cutter holder can be applied as it is to a known cutter. The cutter holder is configured to stably hold the cutter by a predetermined urging force from the spring, and the user grips the cutter holder to cut the object to be cut. At this time, if the user presses the cutter blade beyond the urging force of the spring, the cutter blade retracts in the direction opposite to the pressing direction against the urging force of the spring, so that something other than the object to be cut is erroneously damaged. Is prevented. The urging force of the spring can be adjusted to an optimum value for the object to be cut by appropriately adjusting the spring constant, the number of springs, and the like.

Further, it is preferable that the cutter holder according to the present invention further includes an angle adjusting portion rotatably held with respect to the main body portion. The angle adjusting unit is configured to adjust the inclination angle of the cutter blade with respect to the object to be cut. By providing the angle adjusting portion, it becomes easy to fix the angle of the cutter blade with respect to the object to be cut, and it becomes possible to perform a more stable cutting process.

Further, the cutter holder according to the present invention preferably further includes a fall prevention portion having a slit through which the cutter blade passes at a position where the cutter blade is exposed from the holding portion. Even if the holding part cannot hold the cutter when the second holding part slides, it is possible to prevent the cutter from falling by inserting the cutter blade into the slit of the fall prevention part. ..

According to the present invention, it is possible to provide a cutter and a cutter holder that prevent accidental damage to objects other than the object to be cut.

It is a figure which shows the cutter holder which concerns on one Embodiment of this invention. It is a figure which shows the structure of the cutter holder which concerns on one Embodiment of this invention. It is a figure which shows the use state of a cutter holder. It is a figure which shows the cutting process using a cutter holder. It is a figure which shows the cutter holder which concerns on other embodiment of this invention. It is a figure which shows the cutter which concerns on one Embodiment of this invention.

From here, the cutter holder according to one embodiment of the present invention will be described with reference to the drawings. 1 and 2 are views showing a cutter holder 10 according to an embodiment of the present invention. The cutter holder 10 holds a known cutter 100 and is configured to be gripped and used by the user (see FIG. 3). The cutter holder 10 includes a main body 12, a holding portion 14, a spring 22, and a fall prevention portion 30.

The main body 12 is composed of side plates 121 and 122 and an upper plate 123, and has a U-shape in front view (see FIG. 1 (B)). The side plates 121 and 122 are plate-like members arranged so as to face each other, and are made of a resin such as vinyl chloride or polyvinyl chloride. The upper plate 123 is a resin plate arranged so as to be sandwiched between the side plates 121 and 122, and is fixed to the side plates 121 and 122 by a fixture such as a bolt. The upper plate 123 is formed with two circular through holes 26. As shown in FIG. 3, the user uses the cutter holder 10 by gripping the side plates 121 and 122.

The holding portion 14 is configured to hold the cutter 100, and has a first holding portion 141, a second holding portion 142, and an insertion groove 24. The holding portion 14 can be molded from a resin material. As shown in FIG. 3, the holding portion 14 holds the cutter 100 by inserting the cutter 100 into the insertion groove 24. The insertion groove 24 is a through hole formed along the length direction on the facing surfaces of the first holding portion 141 and the second holding portion 142.

The first holding portion 141 is a substantially rectangular parallelepiped-shaped resin member sandwiched between the lower portions of the side plates 121 and 122. The first holding portion 141 is fixed to the side plates 121 and 122 with a fixture such as a screw. A groove 241 is formed in the first holding portion 141 along the length direction. The groove 241 is a concave groove that serves as a space for the lower half of the insertion groove 24, and is formed according to the shape of the cutter 100.

The second holding portion 142 is a resin member arranged on the upper portion of the first holding portion 141. The second holding portion 142 is slidably held between the side plates 121 and 122 and between the first holding portion 141 and the upper plate 123. The second holding portion 142 has a pole 20 and a groove portion 242.

The pole 20 is provided so as to extend in the vertical direction from the upper surface of the second holding portion 142. The second holding portion 142 has two poles 20. The pole 20 is inserted through the through hole 26 of the upper plate 123. The pole 20 is arranged so that the tip portion protrudes from the through hole 26.

The groove portion 242 is a concave groove portion that serves as a space for the upper half of the insertion groove 24, and is formed along the length direction of the second holding portion 142. The groove portion 242 is provided at a position corresponding to the groove portion 241, and the space formed by the groove portion 241 and the groove portion 242 facing each other becomes the insertion groove 24.

The spring 22 is a compression coil spring arranged on the pole 20. The spring 22 is configured to urge the second holding portion 142 with a predetermined pressure by being compressed between the top plate 123 and the second holding portion 142. The urging force on the second holding portion 142 can be appropriately adjusted by changing the spring 22 or adjusting the distance between the top plate 123 and the second holding portion 142. Further, as the spring 22, an elastic member such as a leaf spring, a rubber spring (rubber spring), an air spring, or a torsion bar can be used in addition to the compression coil spring. Further, the cutter holder 10 is configured so that one spring 22 is provided on each of the two poles 20, but the number of poles 20 and springs 22 is not limited to this.

The fall prevention portion 30 is a plate-shaped member arranged in the opening of the insertion groove 24, and is fixed to the second holding portion 142. As shown in FIGS. 2 and 3, the fall prevention unit 30 has a slit 32 through which the cutter blade 101 passes. The fall prevention unit 30 is configured to prevent the cutter 100 from falling when the second holding unit 142 slides and the holding unit 14 cannot hold the cutter 100.

From here, the cutting process using the cutter holder 10 will be described. As shown in FIG. 3, the cutter holder 10 inserts and holds the cutter 100 in the insertion groove 24. The cutter 100 is inserted into the insertion groove 24 from the side where the fall prevention portion 30 is not arranged (see the arrow in FIG. 2). The cutter 100 is held so that the tip of the cutter blade 101 is exposed from the main body 12. The amount of exposure of the cutter blade 101 is adjusted according to the object to be cut. The user grips the side plates 121 and 122 and uses the cutter holder 10.

From here, an example of cutting the thick paper 50 with the cutter holder 10 will be described with reference to FIGS. 4 (A) and 4 (B). The thick paper 50 is a paper material having a predetermined thickness placed on the work table 52. The user presses the cutter blade 101 exposed from the cutter holder 10 against the thick paper 50 and moves the cutter holder 10 in the direction of the arrow in FIG. 4A to cut the thick paper 50. At this time, if the user tries to press the cutter blade 101 beyond the thickness of the thick paper 50, that is, if the user tries to cut the thick paper 50 with a force exceeding an appropriate range of the force required to cut the thick paper 50, As shown in FIG. 4 (B), the second holding portion 142 slides in the arrow shown in the drawing against the urging force of the spring 22. The sliding of the second holding portion 142 makes it impossible for the holding portion 14 to hold the cutter 100. Since the cutter blade 101 is inserted through the slit 32, it is lifted together with the second holding portion 142 in the direction of the arrow shown in the drawing. Further, since the main body of the cutter 100 cannot pass through the slit 32, the cutter 100 does not get caught in the fall prevention portion 30 and fall from the cutter holder 10. The urging force of the spring 22 is adjusted in advance according to the thickness of the thick paper 50.

By using the cutter holder 10, the cutter blade 101 is not pressed downward beyond the thickness of the thick paper 50, so that the cutting operation can be performed without damaging the work table 52. Further, since the cutter holder 10 can be gripped in the same way as a known cutter, the feeling of use of the user is almost the same as that of the conventional cutter, and the cutter holder 10 can be used regardless of the skill level of the user. be.

Further, the cutter holder 10 not only prevents the cutter holder 10 from cutting too much in the thickness direction. For example, it can also be used for deburring. If the user puts too much force when cutting the burr with a cutter, not only the burr but also the peripheral part of the burr may be damaged. The cutter holder 10 is configured so that when the user presses the cutter blade 101 against the burr with a predetermined force or more, the cutter blade 101 is retracted in the direction opposite to the direction in which the user presses the cutter blade 101. It becomes possible to deburr by adjusting.

Hereinafter, other embodiments of the present invention will be described. The cutter holder 10 shown in FIG. 5A includes an angle adjusting plate 34 on the side plate 121. The angle adjusting plate 34 is a fan-shaped plate-shaped resin plate. The angle adjusting plate 34 is rotatably held with respect to the cutter holder 10 by fixing the fixing portion 36 to the side plate 121.

The angle adjusting plate 34 has an opening 38 along the circumference. The opening 38 is provided in an arc shape so as to penetrate the angle adjusting plate 34 in the plate thickness direction. The fixing bolt 40 is a bolt fixed to the side plate 121 on the track of the opening 38. The fixing bolt 40 is provided so as to insert the opening 38, and the angle adjusting plate 34 can be fixed to the side plate 121 by tightening the fixing bolt 40.

As shown in FIG. 5B, the angle adjusting plate 34 is fixed by the bolt 40 at a position where the lower side portion is horizontal to the thick paper 50 after determining the incident angle of the cutter blade 101 with respect to the thick paper 50. By using the cutter holder 10 after fixing the angle adjusting plate 34, the inclination angle of the cutter blade 101 with respect to the thick paper 50 is fixed, so that the cutting process can be performed more safely.

Further, the cutter according to the embodiment of the present invention will be described with reference to FIGS. 6 (A) to 6 (C). FIG. 6A is a diagram showing a cutter 60 according to an embodiment of the present invention. The cutter 60 includes a cutter blade 101, a main body 62, a slider 64, and an urging portion 66.

The main body 62 is a housing portion of the cutter 60, and corresponds to a holding portion described in the claims. The main body 62 is provided with a concave groove portion that slidably accommodates the cutter blade 101 at the lower portion (downward in the drawing). The cutter blade 101 is configured to be exposed from an opening formed at the end of the main body 62. A cap is fitted in the other end of the main body 62.

The slider 64 is a resin member attached to the base end portion of the cutter blade 101, and is configured so that a part of the slider 64 is exposed from an opening 621 formed in a side surface portion of the main body 62. The slider 64 can move along the length direction of the opening 621, and the cutter blade 101 moves together with the slider 64. The user moves the slider 64 to adjust the exposure amount of the cutter blade 101 from the main body 62.

The urging portion 66 is attached to the cutter blade 101, and includes a holding portion 661, a spring 662, and a cylindrical portion 663 as shown in FIG. 6 (B). The urging portion 66 is configured to apply an urging force to the cutter blade 101 downward in the drawing. In this embodiment, two urging portions 66 are attached to the cutter blade 101. The urging portion 66 is configured to move in accordance with the movement of the cutter blade 101.

The holding portion 661 is a rectangular resin member fixed to the upper portion (upper part of the drawing) of the cutter blade 101. The holding portion 661 is configured to grip the end portion of the cutter blade 101. The spring 662 is a compression coil spring provided on the upper portion of the holding portion 661. The spring 662 is held in a compressed state between the holding portion 661 and the main body 62, and is configured to urge the cutter blade 101 with a predetermined urging force. The columnar portion 663 is a columnar resin member extending in the vertical direction from the upper portion of the holding portion 661, and is provided with a spring 662 on its peripheral surface. The end of the cylindrical portion 663 extends from an opening 622 provided at the top of the main body 62. The cylindrical portion 663 is slidably held along the length direction of the main body 62.

The user can use the cutter 60 in the same manner as a known cutter. When the user presses the cutter blade 101 with a force exceeding the urging force of the spring 662, the cutter blade 101 opposes the urging force of the spring 662 and opposes the pressing direction of the cutter blade 101 (FIG. 6 (C)). Evacuate in the direction of the arrow). Therefore, the possibility that the cutter blade 101 cuts something other than the object to be cut is reduced.

The description of the embodiments described above should be considered exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

10-Cutter holder 12-Main body 14-Holding part 20-Pole 22-Spring 24-Insert groove 30-Fall prevention part 34-Angle adjustment plate 60-Cutter 62-Main body 64-Slider 66-Biasing part

Claims (4)

With a cutter blade
A holding part that slides the cutter blade and
An urging portion having a spring configured to urge the cutter blade in the pressing direction of the cutter, and an urging portion.
A cutter that has at least
The urging portion is configured to slide along the sliding direction of the cutter blade and retract the cutter blade in the direction opposite to the pressing direction when the force applied to the cutter blade reaches a predetermined value. Cutter. A cutter holder that holds a cutter with a cutter blade.
The main body is configured to be gripped by the user,
A holding portion configured to hold the cutter in the main body portion so that the cutter blade is exposed from the main body portion, and a holding portion.
An urging means having a spring configured to urge the holding portion with respect to the pressing direction of the cutter against the object to be cut in the main body portion.
Is equipped with
The holding part is
A first holding portion fixed to the main body portion and
A second holding portion that is slidably held with respect to the main body portion and is urged by the urging means, and a second holding portion.
And
A cutter holder characterized in that the second holding portion is configured to retract in a direction opposite to the pressing direction when a force applied to the cutter blade reaches a predetermined value. A claim that further includes an angle adjusting portion that is rotatably held with respect to the main body portion and is configured to adjust the inclination angle of the cutter blade with respect to the object to be cut. The cutter holder according to 2. The cutter holder according to claim 2 or 3, further comprising a fall prevention portion having a slit through which the cutter blade passes at a position where the cutter blade is exposed from the holding portion.

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