1. Field of the Invention
The invention relates to an adhesive tape cutting device, more particularly to an adhesive tape cutting device that is adapted to be mounted to an adhesive tape roll and that facilitates cutting of an adhesive tape of the adhesive tape roll.
2. Description of the Related Art
Referring to
In use, the unrolled end of the adhesive tape 41 is extended through the tape slot 315, is attached to the triangular planar abutting surface 316, passes over the tip end 3131, and is further extended beyond an edge of the cutting member 32 for cutting a predetermined length of the unrolled end of the adhesive tape 41. To cut the adhesive tape 41, a user first grabs a segment of the unrolled end of the adhesive tape 41 between the tip end 3131 and the edge of the cutting member 32, and pulls this segment upwardly as shown by arrow (A) in
However, since the planar abutting surface 316 is triangular with a width that gradually decreases towards the tip end 3131, the segment of the adhesive tape 41 that is attached to the triangular planar abutting surface 316 will have two sides that are hanging and unsupported. In addition, since the protruded portion 313, and thus the planar abutting surface 316, is disposed entirely at the side of the tangent line 40 that is adjacent to the adhesive tape roll 4, and does not form any intersection with the tangent line 40, no bending effect is provided to the adhesive tape 41 between the rear edge 317 and the tip end 3131. As such, when the segment 411 of the adhesive tape 41 extending beyond the cutting member 32 is to be removed with a pulling force in direction (T) as shown in
In addition, extension of the unrolled end of the adhesive tape 41 into and through the tape slot 315 is relatively inconvenient.
Therefore, an object of the present invention is to provide an adhesive tape cutting device that is stable during a cutting operation of an adhesive tape, and that facilitates smooth cutting of the adhesive tape.
Another object of the present invention is to provide an adhesive tape cutting device that is convenient for assembly.
Accordingly, an adhesive tape cutting device of this invention comprises a sleeve body and a cutting member.
The sleeve body is adapted to be sleeved on an adhesive tape roll and defines a channel for extension of the adhesive tape roll therethrough. The sleeve body has a top wall that has a tape slot in spatial communication with the channel for extension of an unrolled end portion of an adhesive tape of the adhesive tape roll therethrough. The tape slot is defined by a slot-defining wall having a rear edge. The top wall has front and rear end portions and a protruded portion disposed between the rear edge of the slot-defining wall and the front end portion of the top wall. The protruded portion protrudes outwardly with respect to the channel. The rear end portion and the protruded portion are separated by the tape slot. The protruded portion extends outwardly and radially through a tangent line, which is tangential relative to a center of the adhesive tape roll and which passes through the rear edge of the slot-defining wall, from one side of the tangent line to the other side of the tangent line that is distal from the adhesive tape roll compared to the one side of the tangent line. The protruded portion has a planar abutting surface that is disposed on the other side of the tangent line, that is inclined away from the adhesive tape roll in a forward direction, and that has opposite front and rear ends. The planar abutting surface has a substantially uniform width. The rear end of the planar abutting surface is disposed on one side of a first reference line connecting the rear edge of the slot-defining wall and the front end of the planar abutting surface. Said one side of the first reference line is distal from the adhesive tape roll compared to another side of the first reference line. The front end of the planar abutting surface is disposed on one side of a second reference line connecting the rear edge of said slot-defining wall and a tip of the cutting member. Said one side of the second reference line is distal from the adhesive tape roll compared to another side of the second reference line.
The cutting member is mounted on the front end portion of the top wall of the sleeve body.
Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment with reference to the accompanying drawings, of which:
With reference to
The sleeve body 6 is made from a plastic material, and is formed by injection molding techniques. The sleeve body 6 is adapted to be sleeved on the adhesive tape roll 5, and defines a channel 60 for extension of the adhesive tape roll 5 therethrough. The sleeve body 6 has a top wall 61 having a tape slot 616 in spatial communication with the channel 60 for extension of an unrolled end portion 531 of the adhesive tape 53 of the adhesive tape roll 5 therethrough. In this embodiment, the sleeve body 6 further has two opposite side walls 611 extending downwardly from two opposite sides of the top wall 61, and two opposite bottom walls 612 extending respectively from bottom ends of the side walls 611 toward each other for anchoring on an inner wall of the adhesive tape roll 5.
In this embodiment, the tape slot 616 is defined by a slot-defining wall having opposite front and rear edges 600, 601. The top wall 61 further has front and rear end portions 613, 614 and a protruded portion 617 disposed between the front end portion 613 of the top wall 61 and the front edge 600 of the slot-defining wall. The protruded portion 617 protrudes outwardly with respect to the channel 60. The rear end portion 614 and the protruded portion 617 are separated by the tape slot 616. In this embodiment, the rear end portion 614 defines a tape slit 615 extending therethrough to divide the rear end portion 614 into two halves. The tape slit 615 is in spatial communication with the tape slot 616 for extension of the unrolled end portion 531 of the adhesive tape 53 of the adhesive tape roll 5 therethrough and into and through the tape slot 616.
The protruded portion 617 extends outwardly and radially through a tangent line 50, which is adapted to be tangential relative to a center of the adhesive tape roll 5 and which passes through the rear edge 601 of the slot-defining wall, from one side of the tangent line 50 to the other side of the tangent line 50 that is distal from the adhesive tape roll 5 compared to said one side of the tangent line 50. The protruded portion 617 has a top end 620 and a planar abutting surface 610 extending rearwardly from the top end 620 toward the front edge 600 of the slot-defining wall. The planar abutting surface 610 is disposed on the other side of the tangent line 50, is inclined away from the adhesive tape roll 5 in a forward direction, and has opposite front and rear ends 618, 619. The rear end 619 of the planar abutting surface 610 is disposed on one side of a first reference line 691 connecting the rear edge 601 of the slot-defining wall and the front end 618 of the planar abutting surface 610. Said one side of the first reference line 691 is distal from the adhesive tape roll 5 compared to the other side of the first reference line 691. The front end 618 of the planar abutting surface 610 is disposed on one side of a second reference line 692 connecting the rear edge 601 of the slot-defining wall and a tip 71 of the cutting member 7. Said one side of the second reference line 692 is distal from the adhesive tape roll 5 compared to the other side of the second reference line 692. In this embodiment, the planar abutting surface 610 is a rectangular substantially flat surface with a substantially uniform width (W) (see
The cutting member 7 is mounted on the front end portion 613 of the top wall 61 of the sleeve body 6. In this embodiment, the cutting member 7 is made integrally from a metal material.
In use, with further reference to
To use the adhesive tape 53, a user grabs the segment of the unrolled end portion 531 of the adhesive tape 53 between the protruded portion 617 and the cutting member 7, and pulls this segment upwardly as shown by arrow (S) in
A “multi-bending structure” is provided by the adhesive tape cutting device of the present invention from the rear edge 601 of the slot-defining wall, to the rear end 619 of the planar abutting surface 610, to the front end 618 of the planar abutting surface 610, and then to the tip 71 of the cutting member 7 to facilitate effective tape cutting and convenient use of the adhesive tape cutting device as will be clearly described below. As shown in
In summary, the adhesive tape cutting device according to the present invention is adapted to be removably mounted on the adhesive tape roll 5, and is movable relative to the adhesive tape roll 5. Through the design of the tape slit 615, the unrolled end portion 531 of the adhesive tape 53 of the adhesive tape roll 5 can easily pass through the tape slit 615 into the tape slot 616 to facilitate convenient use. Moreover, during a cutting operation, since the unrolled end portion 531 of the adhesive tape 53 is brought into abutment against the rear edge 601 of the slot-defining wall and the top end 620 of the protruded portion 617 of the top wall 61, and is attached to and covers substantially the planar abutting surface 610 of the protruded portion 617 of the top wall 61, the unrolled end portion 531 of the adhesive tape 53 may have sufficient tension, and a stable support is provided to the unrolled end portion 531 of the adhesive tape 53. Therefore, cutting of the distal part 532 of the unrolled end portion 531 of the adhesive tape 53 is facilitated, and a smooth edge of the cut piece of the adhesive tape 53 is achieved. Moreover, between two cutting operations of the adhesive tape 53, the tension in the unrolled end portion 531 of the adhesive tape 53 in a horizontal direction, along which the width (W) of the planar abutting surface 610 is measured, that extends from the rear edge 601 of the slot-defining wall, to the rear end 619 of the planar abutting surface 610, to the front end 618 of the planar abutting surface 610, and to the tip 71 of the cutting member 7 is uniform. As a result, the unrolled end portion 531 of the adhesive tape 53 can be stretched out and maintained flat and even, such that adhesiveness of the unrolled end portion 531 and smooth cutting during a subsequent cutting operation will not be affected. Therefore, the adhesive tape cutting device of the present invention is convenient for assembly to an adhesive tape roll 5, and provides stability to and facilitates smooth cutting of an adhesive tape 53 of the adhesive tape roll 5 during a cutting operation.
While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
This application is a continuation-in-part (CIP) of U.S. patent application Ser. No. 11/960,536, entitled “ADHESIVE TAPE CUTTING DEVICE”, filed on Dec. 19, 2007, the disclosure of which is hereby incorporated by reference in its entirety.
Number | Date | Country | |
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Parent | 11960536 | Dec 2007 | US |
Child | 12822985 | US |