JPH0616321A - Tape cutter - Google Patents

Abstract

PURPOSE:To provide the safe tape cutter, in which a cutting blade is not exposed except for the time during the tape cutting operation to eliminate the danger of injury. CONSTITUTION:In a tape cutter having a cutting blade 4 on the top surface of one end of a main body 1, which supports the adhesive tape freely to turn, the tip of the cutting blade 4 is formed with an engagement part 5 for receiving a roller 7 supported by a tension member 8, which can be extended and contracted, or a spiral coil spring. At the time of cutting the tape, when the tape 2 is drawn and pulled downward, the roller 7 is pulled to be drawn from the engagement part 5 and the tip of the blade is appeared to enable the tape cut. After finishing the tape cut, since the downward pushing force by the tape 2 does not work, the roller 7, the coil spring or a cover is reset to the original position to cover the tip of the blade.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cutter, and more particularly to a tape cutter with a safety mechanism in which a cutting edge portion for cutting the tape appears only during use. The tape cutter referred to here includes not only a desk-mounted type but also a portable and small type made of plastic.

[0002]

2. Description of the Related Art A conventional tape cutter is composed of a tape holder portion for rotatably supporting a tape and a tape cutting portion having an upward saw tooth cutting edge.
In using the tape, hold the end of the tape and pull out a desired amount, apply the portion to be cut to the cutting edge and pull downward.

[0003]

By the way, the conventional tape
In the pu cutter, since the upward saw-tooth-shaped cutting blade is always exposed, not only during the cutting operation of the tape but also accidentally touched by a finger or the like, which may cause an injury. Especially, a case where a child carelessly touches and injures
There are many Therefore, it is an object of the present invention to provide a safe tape cutter which is not exposed to the cutting edge except when the tape cutting operation is being performed and thus there is no risk of injury.

[0004]

SUMMARY OF THE INVENTION The present invention is a tape cutter having a cutting edge on the upper surface of one end of a main body for rotatably supporting an adhesive tape.
In the tape cutter, means for forming a fitting portion for receiving a roller rotatably supported by a stretchable tension member such as a spring or a torsion coil spring,
In the cutting edge portion of the cutting blade, means for forming a fitting portion for receiving a coil spring, both ends of which are attached to the upper end of the main body end portion, or, in the tape cutter, on the upper surface of the main body end portion, The above-mentioned problems have been solved by a means for installing a cover which is disengaged from the cutting edge by receiving a pressing force associated with pulling the tape downward during tape cutting.

[0005]

[Operation] When tape is cut, by pulling the tape out and pulling it downward, the roller or coil spring is also pulled out of the fitting part, or the cover comes off the cutting edge and the cutting edge is exposed. However, tape cutting becomes possible. Tee
After the end of the cut, the pressing force by the tape is not applied, so the roller, the coil spring or the cover returns to the original position, and the cutting edge is hidden.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described with reference to the accompanying drawings. The illustrated one is a desk-mounted type. First, the embodiment shown in FIGS. 1 to 4 will be described. In the figure, reference numeral 1 is a main body made of plastic, metal or the like, and at one half thereof, a roll-rolled adhesive tape 2 is rotated by a conventional method. Support freely.

A sawtooth-shaped cutting blade 4 is provided at one end 1a of the main body 1.
A tape cutting section 3 having the above is provided. Cutting edge 4
Is installed by, for example, being embedded in the upper surface of the main body end portion 1a extending upward. A fitting portion 5 having a semicircular shape or the like is formed at the tip of the cutting blade 4, and the blade tip is directed upward. A stopper-6 is installed on the upper surface of the body end 1a,
The outer wall 1b is formed on the outer side thereof. At the upper end of each outer wall 1b, an inward cover (not shown) is provided.
It may be installed with an interval to pass through.

Reference numeral 7 is a cylindrical roller having a size (a few millimeters in diameter) such that the lower half portion thereof can be exactly accommodated in the fitting portion 5,
It is supported by a stretchable tension member 8 such as rubber (FIG. 3) and spring (FIG. 4) passed between the outer walls 1b. When using a spring, the torsion coil spring 8a as shown in FIG. 4 may be used, or a general coil spring may be used. It should be noted that only the coil spring may be used without using the roller 7, or the roller and the tension member may be integrally formed of rubber or the like.

Both ends of the tension member 8 may be completely fixed to the inner surface of the outer wall 1b, but since they may be broken due to long-term use, they can be attached to and detached from the outer wall 1b so that they can be replaced. It is preferable. FIG. 3 shows an example thereof, which is formed on the inner side surface of the outer wall 1b vertically from the upper end thereof.
A fitting groove 9 such as a dovetail groove having a narrow entrance is formed. On the other hand, at both ends of the tension member 8, engaging portions 10 that can move only vertically in the fitting groove 9 are provided, and the engaging member 10 is fitted into the fitting groove 9 from above to pull the tension member 8 in place. Attach. When replacing, slide it upward and remove it. Instead of the fitting groove 9, a vertical groove extending inside and outside the outer wall 1b is formed, and
The enlarged portion provided at the end may be locked on the outer surface side of the vertical groove. In addition, various known means can be adopted as a method of detachably attaching both ends of the tension member 8, and the method is not limited thereto.

In the above embodiment, the roller 7 is pulled by the tension member 8 and is accommodated in the normal fitting portion 5 (see FIG. 1).
Solid line and the state shown in FIG. 2), the blade edge is not exposed because it is in contact with or close to the roller 7, and even if the roller 7 is pressed from above, the fingers do not hit the blade edge. It's safe. When using the tape, hold the tape with your fingertips, put the tape on the roller 7, and pull it slightly to the front, that is, to the right in FIG. Along with this operation, the adhesive force of the tape also pulls the roller 7 toward you, so that the tension member 8 extends, and as a result, the roller 7 gets over the cutting edge and comes out of the fitting portion 5 and pulls. The fitting part 5 is pulled by the material 8.
It moves along and stops behind it (see the phantom line in FIG. 1).

At this time, since the blade tip is exposed, it is possible to pull the tape downward and hit the blade tip to cut. When the tape is cut, the pressing force against the roller 7 is lost, so the roller 7 is pulled by the tension member 8 and is returned to its original position.
That is, it returns to the inside of the fitting portion 5. In that case, stopper-6
Therefore, it is not pulled out to the outside of the fitting portion 5. Note that, during the above operation, the roller 7 may idle and may not be able to ride over the cutting edge, and therefore, as shown in FIG. 2, the roller 7 extends in the lengthwise direction on the outer surface of the roller 7. The protrusion 7a may be provided. This ridge 7a
However, by hitting the blade edge with the rotation of the roller 7, it is possible to reliably get over the blade edge without spinning.

In the embodiment shown in FIG. 5, an elevating cover 11 which moves up and down is installed at the end 1a of the main body. The elevating cover 11 has an R-shaped side surface, the lower half of which is housed in a groove 12 formed on the upper surface of the main body end 1a, and is constantly subjected to a pushing force by a pushing spring 13 arranged in the groove 12. There is. The curved cover portion 11a of the lifting cover 11 is a taper.
When the pressing force of the tape 2 is not applied, the cutting edge 4 is covered at the tip portion thereof (FIG. 5 (A)), but the pressing force of the tape is applied so that the lifting cover 11 is further in the groove 12. Then, the cover portion 11a is pushed by the upper end portion of the groove 12 and slightly stands up, so that the tip of the cover portion 11a is disengaged from the cutting blade 4 (FIG. 5 (B)). That is, when the elevating cover 11 is pushed down by the tape, the cutting edge 4 is exposed and the tape can be cut. When the tape is cut, the lift cover 11 is pushed up by the push-up spring 13 and returns to its original state to cover the cutting edge.

In the embodiment shown in FIG. 6, a flexible cover 14 is installed at the end 1a of the main body. This flexible cover
In Fig. 14, the cutting edge 4 is covered at its upper end bent portion in the flat state (solid line in Fig. 6), but when the pressing force by the tape is applied, the vertical portion is bent and the cutting edge 4 appears (Fig. 6 imaginary line), tape 2 can be cut. When the tape 2 is cut, the flexible cover 14 returns to its original stretched state by its restoring force and covers the cutting edge again.

In the embodiment shown in FIG. 7, a rotary cover having a semicircular shape or the like is rotatably installed at the body end 1a. The rotating cover includes a rotating plate 15 pivotally supported on the main body end 1a,
Cover 16 such as a semi-circle attached to it, and
It comprises a weight 17 installed at the lower end of the rotating plate 15. This rotating cover covers the cutting edge 4 with the cover 16 in a normal state (FIG. 7 (A)), but when the tape 2 is pulled, the tip of the cover 16 is pulled. , Cover
16 is disengaged from the cutting edge 4 to expose the cutting edge, and the tape 2 can be cut (FIG. 7 (B)). After the tape cutting, the turning cover returns to its original state by the action of the weight 15, and the cover 16 covers the cutting edge 4.

In the embodiment shown in FIG. 8, a folding cover 18 is installed at the body end 1a. Folding cover-18
Is a Z-shaped part that is formed by extending a vertical part, and in normal times, the cutting edge 4 is covered at the tip of the lower side of the rounded Z-shaped part 19 (FIG. 8A). And the
When the pressing force by the press 2 is applied, the Z-shaped portion 19 is crushed and folded, and as a result, the tip of the lower side is disengaged from the cutting blade 4 and the blade tip is exposed, enabling tape cutting (FIG. 8B). ). After the tape cutting, the Z-shaped portion 19 returns to its original state due to its restoring force, and the cutting blade 4 is covered again.

The embodiment shown in FIG. 9 is a slit cover 20 having a slit 21 through which the cutting edge 4 passes.
The slit cover 20 is of a right angle type, and its horizontal portion can be bent downward. The slit 21 is formed at the tip of the horizontal portion, and the horizontal portion is pressed downward by the tape 2 to expose the cutting edge 4 from the slit 21 and enable tape cutting ( Figure 9
(B)). After the tape cutting, the horizontal portion returns to the original horizontal state due to its elasticity, and the cutting blade 4 is covered.

[0017]

As described above, the present invention has a simple structure, and the cutting edge appears only at the time of tape cutting due to the pressing force of the tape, so that the hand is accidentally injured by the cutting edge. There is no effect, and there is an effect that it can be used safely.

[Brief description of drawings]

FIG. 1 is a partial sectional front view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the above embodiment.

FIG. 3 is a perspective view showing an example of a method for attaching and detaching a roller in the above embodiment.

FIG. 4 is a side view showing an example of a method for attaching a roller in the above embodiment.

FIG. 5 is a side vertical cross-sectional view of another embodiment of the present invention.

FIG. 6 is a side view of still another embodiment of the present invention.

FIG. 7 is a side view of still another embodiment of the present invention.

FIG. 8 is a side view of still another embodiment of the present invention.

FIG. 9 is a side view of still another embodiment of the present invention.

[Explanation of symbols]

 1 Main Body 1a Main Body End 1b Outer Wall 2 Tape 3 Tape Cutting Part 4 Cutting Edge 5 Fitting Part 6 Stopper 7 Roller 7a Ridge 8 Tension Material 11 Elevating Cover 14 Flexible Cover 15 Rotating plate 16 Cover 17 Weight 18 Folding cover 20 Cover with slit 21 Slit

Claims (3)

[Claims] 1. A tape cutter having a cutting edge on the upper surface of one end of a main body for rotatably supporting an adhesive tape, wherein the cutting edge of the cutting edge has a stretchable tension member such as rubber or spring. A tape cutter having a fitting portion for receiving a roller rotatably supported by a torsion coil spring. 2. A tape cutter having a cutting blade on an upper surface of one end of a main body for rotatably supporting an adhesive tape, wherein both ends are attached to a cutting edge portion of the cutting blade and above both ends of the main body. A tape cutter having a fitting portion for receiving the coil spring. 3. A tape cutter having a cutting blade on an upper surface of one end of a main body for rotatably supporting an adhesive tape, wherein the tape is pulled downward on the upper surface of the main body end when the tape is cut. A tape cutter having a cover which is detached from the cutting edge by receiving a pressing force associated with the tape cutter.