JP2003117880A - Wrap cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrap cutter having stable performance capable of certainly cutting hard and soft films and durability, being safe and easily used, having a compact body and excellent design, to save resources, to decrease garbage, and to contribute to interests of consumer by supplying an inexpensive refilling roll removing a disposable paper container. SOLUTION: A lid body 6 covering a cutting edge 12, attached to the push button 1 so as to abut on the button 1, by a protecting cover 17, and a main body having a film guide plate locking portion 24 including a plate spring are connected with each other through a hinge. A film guide plate 18 having a curved surface provided with a adhering portion covers about one-forth of a circumferential surface of a film roll stored in the main body 23 as a middle lid. A film pulling out port 29 and a cutting edge penetrating hole 30 are provided in front and rear of the film guide plate 18.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lap cutter.

[0002]

2. Description of the Related Art Conventionally, there is no lap cutter of this kind, and only an invention having a rotary cutting blade has been published by the same applicant as the applicant of the present invention (Japanese Patent Laid-Open No. Hei 7 (1998)).
-232741. Request for examination). In addition, as a general household wrap film, a film containing a disposable paper container with a fixed cutting blade is widely used.

[0003]

In the above-mentioned published patent application, the lever fixed to the cutting blade is pushed by the closing operation of the lid, and the blade edge is pushed by the spring force into the protective groove engraved inside the front plate of the lid. The pressed cutting blade rotates and stands up,
The method of cutting the film pulled out by penetrating the cutting blade guide groove was adopted, but in this method, the cutting edge of the cutting blade revolves while revolving, so to speak,
Along with the lid that can be rotated and closed, it also makes a small rotation while descending, and scratches the film surface to make contact, so there is a problem that it is difficult to cut especially with soft films such as polyethylene. . In addition, the performance of the lever of the leaf spring was unstable, and the cutting blades other than the cutting edge were exposed, so there was a problem that the appearance was anxious.

On the other hand, in a conventional household wrap film containing a disposable paper container with a pull-cut type cutting blade, the film is entangled due to a recoil at the time of cutting, it is difficult to cut at the beginning of cutting, and it is difficult to cut the wrist. There were problems in terms of usability, such as being forced to operate naturally, problems that the container was disposable because it did not lead to resource saving and waste reduction, and it was dangerous and troublesome to remove the metal blade for reuse. There was also the problem that the appearance of the container was not aesthetically pleasing and it did not match the atmosphere of a modern and stylish kitchen.

The present invention provides a lap cutter which is safe and easy to use, compact and excellent in design, and which has stable performance and durability capable of surely cutting not only a hard film but also a soft film, and eventually a disposable paper container. The purpose is to promote the supply of inexpensive refill rolls that have been abolished, and contribute to resource conservation, waste reduction, and consumer benefits.

[0006]

In order to achieve the above-mentioned object, the lap cutter of the present invention protects a push-cutting cutting blade 12 abutting against a slide-type push button 1 and extruded by a hard elastic thin plate. Lid 6 covered with cover 17
And the main body 23 having the film guide plate locking portion 24 containing the leaf spring 32 therein are connected via a hinge 35, and one end in the longitudinal direction of a curved surface having a shape in which a cylinder is divided into approximately four is slightly projected. A wrap film housed in the main body with a film guide plate 18 formed in a chevron shape and provided with a strip-shaped adhesive portion 19 in the immediate vicinity thereof is attached to the main body opening as an openable / closable inner lid, and the upper surface is projected from the opening. Approximately 1/4 of the circumferential surface of the roll 31 is rotatably covered, and a gap is provided in the front and rear to form the exposed rear gap of the roll 31 into the film outlet 29,
The front gap facing the cutting blade 12 is used as the cutting blade penetration hole 30.

The film guide plate 18 prevents the film roll 31 housed in the main body from jumping out, and one end on the side of the film draw-out port 29, which is formed in a slightly protruding chevron shape, makes it easy to draw out the film, and is provided in the vicinity thereof. The strip-shaped adhesive portion 19 fixes the drawn film, assists the cutting by the cutting blade 12, and prevents the film from rewinding. After the cutting, the film from the adhesive portion 19 to the cut end is not adhered and lies free on the curved surface, so that the cut end can be easily picked up when the film is next drawn out. Since the film pull-out port 29 is widely provided, it is easy to pick up the tape attached to the cut end of the new roll.

The push-out type cutting blade 12 attached to the inside of the lid front plate via the rotation axis A14 is pushed out by pushing the push button 1 after closing the lid body 6, and the cutting blades facing each other. The film that penetrates the penetration hole 30 and is pulled out and fixed to the adhesive portion 19 is cut in a push-cut manner. Since the cutting edge of the cutting blade 12 is extruded in a stationary state at a constant angle, there is no difficulty in cutting the film surface by scratching, and the performance is always stable because it is based on a simple principle. When the force applied to the push button 1 is loosened, the cutting blade 12 is pushed back by the push spring 16 of the arm terminal and automatically retracts.

Protective cover 17 made of a hard elastic thin plate
The elastic force of itself naturally opens and closes as the cutting blade 12 moves in and out, and covers the entire length of the cutting blade 12 excluding the arm 13 to prevent the risk of accidentally grabbing the cutting blade portion of the lid 6 and touching the cutting edge. It is a blindfold that not only prevents but also gives a sense of security.

The film guide plate engaging portion 24, which is provided on the inner side of the side surface plate of the main body and has a concave portion, has an engaging portion projection 22 of the film guide plate 18 attached as an inner lid to the opening portion of the main body. When the film guide plate 18 is pressed into contact with, the film guide plate 18 is locked in the opening of the main body by changing the direction of the intruding projection 22 by a leaf spring 32 having a built-in protrusion and penetrating it into the notch 33 opposite thereto. When both ends of the film guide plate 18 are pushed toward the film pull-out port 29 side, the engaging portion projection 22 that has come out of the notch 33 is pushed up by the leaf spring 32 and comes out to the opening. Unless the force from the side acts on both sides of the film guide plate 18 toward the film outlet 29 side, the locking is not released. In order to take out the used core and refill it with a new roll, the unlocked film guide plate 18 may be developed to the lid 6 side. When binding, it is sufficient to return the guide plate 18 to the original position and push both ends.

In order to use the present invention described above, after a new roll is accommodated in the main body 23, a necessary amount of film is pulled out and fixed to the adhesive portion 19, the lid 6 is closed and the push button 1 is pushed in. Good. When a soft film is used, it is better to stretch the film slightly and push the push button 1 at once.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described based on examples with reference to the drawings.

The film guide plate 18 shown in FIGS. 1, 2 and 3E is a film roll 3 housed in a main body 23.
The circular arc of the bracket 20 consisting of a fan-shaped quadrant and an arm portion at both ends of the curved surface of the cylinder divided into approximately four to cover about one quarter from the upper surface to the front side of the circumferential surface of No. 1. Butt is formed into a U-shape by abutting the arc of the curved surface and integrally molded with an appropriate synthetic resin. At that time, the pivot shaft B21 is provided at the tip of the arm portion of the bracket 20, and the engaging portion projections 22 are provided at the lower portions of the quadrants, respectively. Is formed in a mountain shape that protrudes in the vicinity of which a strip-shaped adhesive portion 19 is provided in the immediate vicinity thereof, so that the blade edge of the cutting blade 12 that is pushed out and entered does not damage the film roll 31 accommodated in the main body. The lower end of the curved surface on the side is provided so as to slightly project from the line connecting the bottom sides of the brackets 20 on both sides, and the gap between the exposed side of the roll 31 and the back plate of the main body is set to the film outlet 29, and the front plate of the main body is narrowed. The gap between and is the cutting blade penetration hole 30 (see FIG. 1). Also, the rotation axis B21
A bracket 20 provided with a rotation axis B21 so that the arm portion does not touch the back plate of the main body 23 when the film guide plate 18 connected to the main body 23 via the
The tip of the arm is slightly bent so that it projects upward. The cross-sectional shape of the locking portion projection 22 is such that it can easily enter and leave the notch 33 of the film guide plate locking portion 24 on the main body side, and the adhesive portion 19 has a mirror finish so that the film can easily stick to it, but it is a sticky tape. May be attached.
The front and back surfaces of the film guide plate 18 excluding the adhesive portion 19 are provided with a surface finish to prevent the film from sticking so as not to interfere with the smooth withdrawal of the film. The same surface finish is appropriately applied to other components such as the lid 6 and the inside of the main body 23 and the protective cover 17.

The lid 6 shown in FIGS. 1, 2 and 3 (b) is
Later, one side of the hinge 35 for connecting to the main body 23 is placed at an appropriate position on the back plate, and the slit window 7 for fitting the push button 1 is provided at the corner of the top plate and the front plate at the center of the lid body 6, A shaft hole A8 for attaching the cutting blade 12 is provided inside the side plate, and the pushing spring 1
A position where the small protrusion A15 for attaching 6 is brought into contact with the small protrusion B15 of the arm end of the cutting blade by rotation, the protective cover 1
The registration groove 10 for attaching 7 is the hinge 35 on the back of the lid.
The front plate of the lid body 6 and the front plate of the main body 23 are engaged with each other in order to prevent the front plate of the main body 23 from bulging outward due to the resistance of the film at the time of cutting. A step is provided on the wood mouth of the board and it is molded with an appropriate synthetic resin,
It is connected to the main body 23 through the hinge 35. The hinge 35 is a fitting type, but other methods may be used. The corners between the back plate and the top plate may be appropriately dropped to facilitate holding.

A cutting blade 12 shown in FIGS. 1, 2 and 3 (c).
Is formed by using a suitable material such as a strip-shaped steel plate, a stainless steel plate, or ceramics, and is bent at both ends into U-shapes as arms 13, and the rotation axis A1 is provided at an appropriate position of the arm 13.
4 is provided with a small protrusion B15 for attaching the push spring 16 to the terminal, and is attached to the lid body 6 via the rotation axis A14.
When the blade is closed, the cutting blade 12 and the arm 13 are rotated without interfering with the film guide plate 18, and the cutting blade 12 is attached so as to enter the cutting blade penetration hole 30. Cutting blade 12
The tooth profile of Fig. 3 may have any shape suitable for cutting a film, but as shown in Fig. 3 (c), a tooth profile of a continuous triangular tooth profile is preferably rounded in an arc shape. . Although it is sufficient to provide the cutting edge only with the cutting edge, it is better to provide it also in the valley. The spine of the cutting blade 12 is folded back and rounded so that it does not bend and deform even if it is repeatedly extruded.
Insert the channel and reinforce it, and finish it smoothly to reduce friction with the push button 1. Alternatively, only the blade portion of the cutting blade 12 may be prepared separately, and the arm 13 and the back portion may be molded with synthetic resin or the like and fitted. Also,
A coating such as Teflon (registered trademark) may be applied to the blade portion.

The push button 1 shown in FIGS. 1, 2 and 3 (a) is formed in a channel type having a L-shaped cross section.
One side of the finger rest is the finger rest 2 and the other is the apron rest 3, and a stabilizer plate 5 having both wings protruding from both ends of the finger rest is provided on the back surface of the rear end of the finger rest 2, and the stabilizers 5 are provided at both ends in the vicinity of the bent portion. A notch 4 having an appropriate shape is provided and molded with synthetic resin. The slit window 7 from the top plate to the front plate in the central portion of the lid body 6 into which the push button 1 is fitted is provided with the width of the front plate side slightly narrower than that of the top plate side, and the inside of the front plate protruding from both sides is provided. The notch 4 of the finger rest 2 can be slidably fitted in a part thereof. The shape of the finger contact portion 2 is such that it fits into a slit on the side of the top plate to form the same plane as the top plate, and can be freely moved in and out, and the depth dimension thereof is a film even if the lid 6 is closed and sufficiently pushed. The guide plate 18 should not be significantly touched. The vertical dimension of the front window cutting window 7 depends on the stroke amount of the cutting blade 12 to be extruded, and the vertical dimension of the apron portion 3 is sufficient to cover it. Further, on the back surface of the upper side of the slit 7 on the top plate side into which the finger rest 2 is fitted,
When the push button 1 is attached, the thickness of the push button 1 is partially prevented so that the stabilizer 5 provided on the rear surface of the rear end of the finger contact portion 2 comes into contact with the push button 1 to prevent the push button 1 from rotating rearward. A thumb is placed on the portion 3 to prevent the push button 1 from rattling when opening and closing the lid 6. The finger rests 2 of the push button 1 are in contact with the blades 2 of the stabilizer 5 projecting on both sides of the back surface from being cut off from the top plate and abutting against each other.
It is pushed up to the back of 2 and forms the same plane as the top plate. When the push button 1 is pushed in, the notch 4 and the apron portion 3 fitted at both ends of the front window slit 7 are prevented from jumping forward, and slide vertically along the front plate. To attach the push button 1, insert the apron part 3 from the back side of the lid body 6 into the cut window on the top plate side, and insert the notches 4 into both ends of the cut window 7 on the front plate side while rotating to the front plate side. Good.

The protective cover 17 shown in FIG. 1, FIG. 2 and FIG. 3D is one end of a thin plate of a hard elastic body having appropriate elasticity and rigidity, which is cut in accordance with the width of the cutting blade 12 excluding the arm 13 part. Is fitted into the register groove 10 provided on the rear surface of the lid body near the hinge 35, and is cut along the back surface of the lid body 6 while curving along the back surface of the lid body 6 to reach the inner edge of the front plate. The cut end is provided so as to abut against the inside of the front plate by utilizing the spring force of the elastic body itself, and is naturally opened and closed as the cutting blade 12 moves in and out. Curved cover 17
Is fixed to the back surface of the lid body 6 near the bent portion with an adhesive or a double-sided tape. Alternatively, snap fasteners are provided at several places on the back surface of the lid body 6 so that they can be easily attached and detached when the cutting blade 12 needs to be replaced, and a backing plate of appropriate hardness is attached to the back surface of the lid body to attach or detach it. You may fix it freely.

Main body 23 shown in FIGS. 1, 2 and 3 (f)
In order to prevent the front plate from bulging outward when the film is cut into pieces, a step is formed on the front plate of the lid body 6 so as to mesh with the front plate of the lid body 6, and the lid body 6 is connected. A space in which one side of the hinge 35 is provided at an appropriate position on the back plate, and the cutting blade 12 attached to the lid 6 can freely rotate without interfering with the film guide plate 18 attached to the opening of the main body 23. In order to provide the space, the thickness of the side plate is increased to the inside in consideration of the space of the pressing spring 16 attached to the end of the arm 13 of the cutting blade 12, and below that, the deviation of the accommodated roll 31 Spacer 27 to prevent
As a step, a step or a protrusion corresponding to the thickness of the bracket 20 of the film guide plate 18 is provided and molded with an appropriate synthetic resin. In addition, in the thickened portion of the side plate which is increased inward, a laterally long shaft hole B26 is formed in a semicircular small bracket 25 which is in contact with the back plate and protrudes somewhat from the opening. The film guide plate locking portions 24 are provided at the positions where the locking portion projections 22 come into contact, the lid body 6 is connected through the hinges 35, and the rotating shaft B21 is fitted into the laterally long shaft hole B26 so that the film guiding plate. Attach 18. The shaft hole B2
The reason why 6 is provided in the lateral direction is to allow a slight back-and-forth movement of the rotation axis B21 required for locking and unlocking the film guide plate 18, and it has already been provided that it is somewhat projected from the opening.

As described above, when the film guide plate 18 connected through the shaft hole B26 is opened and tilted to the lid 6 side, the arm portion of the bracket 20 does not touch the back plate of the main body. This is because The front and rear corners of the bottom of the main body 23 may be appropriately dropped for easy holding. Also,
Ohmic (.OMEGA.) Type springs may be embedded in two appropriate places on the bottom surface inside the main body 23 so that the partition 28 that can be opened and closed can be used for a narrow film roll.

The film guide plate locking portion 24 shown in FIGS. 1, 2 and 3 (f) has a locking portion projection 22 of the film guide plate 18 in the thickened portion added to the inside of the side plate of the main body 23. The side surface of the abutting portion is formed so as to form a left and right uneven concave portion having a narrowed opening, and one side of the concave portion is provided with a locking portion projection 22 of the film guide plate 18. Notch 33 that penetrates and slit 34 at the bottom
Is provided to incline a small piece of the leaf spring 32 having an appropriate strength toward the film outlet 29 side, and the inclined surface is attached so as to face the notch 33. The space behind the leaf spring 32 of the turnip-shaped recess is a bending margin of the leaf spring 32 when it is pushed by the engaging portion projection 22. The leaf spring 32 portion of the locking portion 24 may be integrally formed of the same material as the main body 23 having appropriate elasticity. The shape of the recess does not have to be a fog.

The lap cutter of the present invention may be of a stationary type.

[0021]

Since the present invention is configured as described above, it has the following effects.

With the push-cut type cutting blade pushed out by the push button, it is possible to surely cut both hard and soft films, and the film does not get tangled due to reaction and has good sharpness.

The film is easily pulled out and fixed by a wide film outlet and a film guide plate having a curved surface with one end in the longitudinal direction slightly protruding and a band-like adhesive portion in the immediate vicinity thereof. Easy to rewind, there is no rewinding, and the cut end is easy to pick.

The film guide plate locking portion having a built-in leaf spring makes it easy to refill the film roll and prevent the roll from popping out.

The sliding push button does not impose an unnatural movement on the wrist, and since it is not necessary to move the hand held, it is easy to wrap anything.

The protective cover made of a hard elastic thin plate provides a high degree of safety and a reliable appearance.

Compact due to the internal space being cut down and rational utilization.

By molding the lid and the main body with synthetic resin,
Greater freedom of appearance design.

Assembly is easy due to the snap-in parts.

Due to the simple principle and mechanism, there are few failure points and high durability.

By eliminating the conventional paper container with a cutting blade and promoting the supply of inexpensive refills, it contributes to resource saving, waste reduction, and consumer benefits.

[0032]

[Brief description of drawings]

FIG. 1 is a perspective view (when a lid is opened) showing an embodiment of claim 1 of the present invention.

FIG. 2 is an AB sectional view (when the lid is closed) showing the embodiment of claim 1 of the present invention.

FIG. 3 is a perspective view showing a component structure according to claim 1 of the present invention.

[Explanation of symbols]

1 push button 2 finger rest 3 Aprons 4 notches 5 stabilizer 6 lid 7 cut window 8 shaft hole A 9 Small protrusion A 10 register groove (11 missing number) 12 cutting blades 13 arms 14 Rotation axis A 15 Small protrusion B 16 Push spring 17 Protective cover 18 Film guide plate 19 Adhesive part 20 bracket 21 Rotation axis B 22 Protrusion of locking part 23 body 24 Film guide plate locking part 25 small brackets 26 Shaft hole B 27 Spacer 28 partitions 29 Film outlet 30 Cutting blade penetration hole 31 film roll 32 leaf spring 33 cutout 34 slits 35 hinge

Claims (3)

[Claims] 1. A cover (6) in which a cutting blade (12) mounted in contact with a push button (1) is covered with a protective cover (17) made of a thin plate of hard elastic material, and a leaf spring (32). Body (2) having a film guide plate locking part (24) containing
3) is connected via a hinge (35), and one end in the longitudinal direction of the curved surface of the cylinder divided into approximately four is formed into a mountain shape with a slight protrusion, and a strip-shaped adhesive portion (19) is provided in the immediate vicinity thereof. The film guide plate (18) provided with is attached to the main body opening as an inner lid, and the upper surface of the film guide plate (18) is projected from the opening so that about 4 of the circumferential surface of the roll (31) of the wrap film accommodated in the main body.
Cover one-third of the roll (3
The exposed rear gap of 1) is set to the film outlet (29
), The lap cutter which made the front gap facing the cutting blade (12) the cutting blade penetration hole (30). 2. The lap cutter according to claim 1, wherein the leaf spring (32) built in the film guide plate engaging portion (24) is an elastic body integrally formed of the same material as the main body (23). 3. A lap cutter in which the lap cutter according to claim 1 or 2 is a stationary type.