JPH0124053Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a tape cutter that holds an adhesive tape wound in a roll around a cylindrical body and is equipped with a blade for cutting the tape pulled out from the roll into a required length.

Prior Art Adhesive tapes such as cellophane tapes, mending tapes, drafting tapes, double-sided adhesive tapes, etc. are usually sold in rolls wound around cylinders of various sizes. Conventionally, as shown in Fig. 2, it is convenient to keep this on your desk and cut it to the required length whenever necessary.
A main body 1 having a shape and weight suitable for being placed on a desk or the like, and a pair of bearings 2 provided on both sides of its upper edge.
a tape holding member 5 which is rotatably supported by the tape holding member 5 and holds the tape cylinder 7 by pressing its outer peripheral portion against the inner surface of the tape cylinder 7; A tape cutter having a blade 6 that cuts the tape 8 pulled out from a roll into a desired length is generally used.

In such conventional tape cutters,
As shown in FIG. 2, the position of the bearing 2 is fixed to the main body 1. Further, the tape holding member 5 has an external shape, such as an octagonal shape, whose shape and dimensions do not change, and is integrally formed with the shaft supported by the bearing 2, and has a moderately rounded outer peripheral surface at eight corners. It was common practice to hold the tape by pressing it against the inner surface of the tape cylinder 7. For this reason, the inner diameter of the tape cylinder that can be used with a certain tape cutter is limited to one type, and it is not versatile because it cannot handle tapes of various cylinder sizes. There was a drawback that dust easily adhered to the area (in between) and the adhesive became weak.

Purpose In view of the above-mentioned drawbacks of conventional tape cutters, the present invention allows tapes of various cylinder sizes to be attached and used, and even when the tape is wound around a small-diameter cylinder, the removal amount becomes large. The purpose is to provide a tape cutter without

Configuration In order to achieve the above object, the present invention supports each of a pair of bearings so as to be slidable in a direction toward or away from the blade while straddling the upper edge of each side wall of the main body. , a guide groove extending in the sliding direction of the bearing and having an unevenness continuous in the sliding direction of the bearing on the bottom surface is formed on the surface of each side wall, and a circular arc shape is formed on the portion of each bearing facing the guide groove. a leaf spring is attached, a protruding central region of the leaf spring engages with the unevenness of the guide groove, and each bearing is formed with a notch in which a center shaft of the tape holding member is detachably attached and pivotally supported; The tape cylindrical body holding portion of the tape holding member is supported by the central axis via an elastic body that can be elastically deformed to accommodate the diameter of the cylindrical body of various sizes.

Function Since the present invention is configured in this way, tapes with various cylindrical inner diameters can be held on the tape holding member, and the shaft support position and blade of the tape holding member can be adjusted depending on the outer diameter of the tape roll. You can fix the bearing by changing the distance from the tape and adjust it to shorten the distance from which the tape is pulled out.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, which is similar to a conventional tape cutter in that a blade 6 is fixed to the upper surface of one end of the main body 1.

A pair of bearings 2 that pivotally support the tape holding member 5 are made as sliding members separate from the main body 1, and each bearing 2 is
As shown in detail in FIGS. 3 to 5 a and 5 b, it is supported so as to be able to slide toward or away from the blade 6 while straddling the upper edge of each side wall of the main body 1 . The center shaft 11 of the tape holding member 5 is removably attached to the upper part of each bearing 2 and is pivotally supported by the L.
A letter-shaped notch 2a is formed. Guide grooves 3 and 4 extending in the sliding direction of the bearing 2 are provided on the inner and outer surfaces near the upper end of each side wall of the main body 1, and guide grooves 3 and 4 are provided on one of the inner surfaces of the hanging portions on both sides of each bearing 2 that sandwich the upper part of the side wall. 2
b is formed, and an arc-shaped leaf spring 10 is attached to the other end. When the leaf spring 10 is pressed and pushed in and the guide protrusion 2b is fitted into the guide groove 3 and the hand is released, the leaf spring 10 protrudes and engages with the guide groove 4, and the bearing 2 moves into the guide groove 3, 4. It becomes possible to slide without coming off. The bottom surface of the guide groove 4 on the side where the leaf spring 10 engages is uneven at an appropriate pitch as shown in FIG. The bearing 2 is positioned and fixed at that position. In this way, main body 1
The bottom surface of the guide groove 4 formed on each side wall surface of the
Continuous unevenness is formed in the sliding direction of the bearing 2, and an arc-shaped leaf spring 10 is attached to the portion of each bearing 2 that faces the guide groove 4. By engaging with the unevenness, the pair of bearings 2 can be securely fixed to the main body 1 by changing the distance from the blade 6 depending on the diameter of the tape.

The tape holding member 5 is as shown in FIGS. 6a and 6b.
Three cylinders 12 are fixed radially to the central shaft 11, and an arm 13 is slidably fitted into each cylinder 12. A compression spring 14 is inserted between the inner end of the cylinder 12 of the arm 13 and the bottom of the cylinder 12, and a rubber plate 15 is attached to the outer end surface of the arm 13. Therefore, by pushing the arm 13 into the cylinder 12 against the spring force of the spring 14, the amount of protrusion of the arm can be changed. In this way, the tape cylinder holding part of the tape holding member 5 is supported by the central shaft 11 via an elastic body (the spring 14 in this example) that can be elastically deformed to accommodate various sizes of cylinder internal diameters. By expanding and contracting the distance from the center of the shaft 11 to the outer surface of the rubber plate 15 at the tip of the arm in accordance with the inner diameter of tape cylinders 7 of various sizes (Fig. 1), tapes of arbitrary sizes can be formed. 8 can be installed.

The structure of the tape holding member is not limited to the structure of this embodiment, but as shown in FIGS. It is also possible to use one in which the central shaft 17 is passed through the center. The rubber bag 16 is elastically deformed depending on the size of the tape cylinder to which it is attached, and can hold the tape.

Further, as shown in FIGS. 8a and 8b, an elastic body consisting of, for example, four arc-shaped leaf springs 19 is fixed to the central shaft 18 in a swastika shape, and their tips hold the inner surface of the cylindrical body of the tape. It can also be done.

By adjusting the position of the bearing 2 so that the tape draw-out distance is shortened according to the diameter of the tape held by the tape holding members having the various configurations described above and fixing it at that position, it is possible to prevent dust from reaching the adhesive surface. Adhesion can be minimized.

Effects As described above, according to the present invention, by adjusting the position of the bearing relative to the blade, tapes of various sizes can be attached and used in one tape cutter. The concave and convex structure of the matching guide groove bottom allows the bearing to be reliably fixed and held in a predetermined position. Further, depending on the size of the tape roll, the adhesion of dust to the adhesive surface of the tape can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the tape cutter according to the present invention, FIG. 2 is a perspective view showing the configuration of a conventional tape cutter, and FIG. 3 is a sectional view taken along the - line of the bearing of the embodiment shown in FIG. , FIG. 4 is a sectional view taken along the - line in FIG. 3, FIGS. 5 a and b are perspective views showing the shapes of each bearing, respectively, FIG. Fig. 7b is a sectional view thereof, Fig. 7a is a perspective view of another embodiment of the tape holding member, and Figs. 7b and c are respectively B of Fig. 7a.
8a is a perspective view of yet another embodiment of the tape holding member, and FIG. 8b is a front view thereof. 1...Body, 2...Bearing, 2a...Notch, 4...
...Guide groove, 5...Tape holding member, 6...Blade, 7
... Cylinder, 8 ... Tape, 10 ... Leaf spring, 1
1, 17, 18... Central axis.

Claims (1)

[Claims for Utility Model Registration] The inner surface of a cylindrical body having a main body, a tape holding member pivotally supported by a pair of bearings, and a blade fixed to the main body, the tape being wrapped in a roll shape. In a tape cutter which is held in pressure contact with a holding member and whose blade cuts the tape pulled out from a roll, each of the pair of bearings is attached to the blade while straddling the upper edge of each side wall of the main body. A guide groove is formed on the surface of each side wall so as to be slidable toward or away from the bearing, and the guide groove extends in the sliding direction of the bearing and has a concavity and convexity continuous in the sliding direction of the bearing on the bottom surface. An arc-shaped leaf spring is attached to the portion of each bearing facing the guide groove, the protruding central region of the leaf spring engages with the unevenness of the guide groove, and the central shaft of the tape holding member is attached to and detached from each bearing. A notch is formed in which the tape cylindrical body holding portion of the tape holding member can be attached and pivotally supported, and the tape cylindrical holding portion of the tape holding member is supported on the central axis via an elastic body that can be elastically deformed to accommodate various sizes of cylindrical internal diameters. The tape cutter is characterized in that: