EP1712372B1

EP1712372B1 - Pen with paper roll

Info

Publication number: EP1712372B1
Application number: EP05008085A
Authority: EP
Inventors: Chao-Jen Lin
Original assignee: Taiwan Mindcatcher Inc
Current assignee: Taiwan Mindcatcher Inc
Priority date: 2005-04-13
Filing date: 2005-04-13
Publication date: 2007-12-05
Anticipated expiration: 2025-04-13
Also published as: DE602005003646T2; EP1712372A1; DE602005003646D1; ATE380120T1; ES2298876T3

Abstract

A pen (100) with a paper roll is disclosed. A volute spring (124) surrounded by the paper roll is fastened on a reel (120). A volute spring pushes the paper roll for keeping the outer surface of the paper roll to touch a barrel (110) which contains the paper roll. The surface of barrel has prominent lines for decreasing the friction between the outer surface of the paper roll and the inner surface of the barrel. The barrel is configured in an outer casing (150) of a pen, and the barrel and the outer casing have a first opening and a second opening separately. The first opening and the second opening correspond to each other. One side of the second opening (152) is an inward bevel edge (154) which extends into the first opening and interferes with the outer tier of the paper roll. The outer end of the paper roll can be pushed out of the first opening and the second opening against the inward bevel edge.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention generally relates to a writing tool, and more particularly to a pen with a paper roll.

2. Description of the Prior Art

Binding slices, such as paper roll, roll films, or aluminum foils, are often used daily. For reeling in/out the flexible binding slices properly, a plurality of containers for containing the flexible binding slices are provided.
It is very import to prevent the roll of the binding slice loose, blocked, or entangled when the binding slice is reeling in/out, whereby the binding slice can be effectively reeled out for use or reeled in for storage.
In general, there are three design models for using a flexible paper roll configured in a container for reeling the binding slice. One of the design models applies inner thrust generated by rotating the reel to reel out the roll. The other of the design models applies the pulling force to pull the outer end of the roll. Another of the design models applies both of the thrust and the pulling force. No matter which one is applied, the design to prevent reverse by using the thrust or the design to keep the outer end of the roll out of the opening all focus on the limitation of the inner end or the outer end of the roll. However the problem that the roll would become loose in the prior art still has no effective solution. Some methods add viscose on one surface of the roll to resolve the loose problem, but such a roll can be only reel out and impossible to reel in. From US 3 963 358 a ball point pen is known having an internal mechanism to dispense writing paper from a small roll of same confined within a cylindrical cartridge contained within the pen housing or sheath. The cartridge has a knurled collar which is thumb-operated through an opening in the exterior sheath of the pen to rotate the cartridge approximately one-quarter turn against a spring bias to project the leading edge of the paper roll through a slot in the pen sheath, where it may be gripped and pulled by the user to unroll a desired length and then torn off. Prior to tearing the paper from the remaining roll, the knurled collar is released to withdraw the paper a quarter turn into the sheath so that a sufficient length of leading edge remains for the next dispense.
Thus, a design for reeling in/out a roll of a binding slice which is well-proportionally configured in the reeling container is needed. Such a design can resolve the forgoing defects, whereby the reeling container can be light and handy, applied, and reeled out for use or reeled in for storage. According to such a design, the roll can be reeled out/ in smoothly by reeling.

SUMMARY OF THE INVENTION

Therefore, in accordance with the previous summary, objects, features and advantages of the present disclosure will become apparent to one skilled in the art from the subsequent description and the appended claims taken in conjunction with the accompanying drawings.
One objective of the present invention is to apply a volute spring for shoving the roll of a binding slice out, whereby the binding slice can be easy to be reeled out via an opening of the barrel.
Another objective of the present invention is to provide each opening of the barrel and an outer casing an inward bevel edge.
One further objective of the present invention is to apply a volute spring to reel out/in the binding slice, wherein the volute spring can gradually increase the inner space in the barrel for storing the reeled in binding slice.
Accordingly, a pen with a paper roll is disclosed. A volute spring surrounded by the paper roll is fastened on a reel. A volute spring pushes the paper roll for keeping the outer surface of the paper roll to touch a barrel which contains the paper roll. The surface of barrel has the prominent lines for decreasing the friction between the outer surface of the paper roll and the inner surface of the barrel. The barrel is configured in an outer casing of a pen, and the barrel and the outer casing have a first opening and a second opening separately. The first opening and the second opening is correspondent to each other. One side of the second opening is an inward bevel edge which extends into the first opening and interferes with the outer tier of the paper roll. The outer end of the paper roll can be pushed out of the first opening and the second opening against the inward bevel edge.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings incorporated in and forming a part of the specification illustrate several aspects of the present invention, and together with the description serve to explain the principles of the disclosure. In the drawings:
FIG. 1A and FIG. 1B illustrate a structure diagram according one embodiment of the present invention.
FIG. 1C is a assembly diagram of the volute spring and the binding slice;
FIG. 1D and 1E are section diagrams according to one embodiment of the present invention; and
FIG. 1F is a diagram of a finished goods according to one embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present disclosure can be described by the embodiments given below. It is understood, however, that the embodiments below are not necessarily limitations to the present disclosure, but are used to a typical implementation of the invention.
Having summarized various aspects of the present invention, reference will now be made in detail to the description of the invention as illustrated in the drawings. While the invention will be described in connection with these drawings, there is no intent to limit it to the embodiment or embodiments disclosed therein. On the contrary the intent is to cover all alternatives, modifications and equivalents according to the invention as defined by the appended claims.
It is noted that the drawings presented herein have been provided to illustrate certain features and aspects of embodiments of the invention. It will be appreciated from the description provided herein that a variety of alternative embodiments and implementations may be realized, consistent with the appended claims of the present invention.
It is also noted that the drawings presents herein are not consistent with the same scale. Some scales of some components are not proportional to the scales of other components in order to provide comprehensive descriptions and emphasizes to this present invention.
Referring to FIG. 1A and FIG. 1B, which illustrate a structure diagram of a writing tool with a paper roll according to one embodiment of the present invention. The writing tool includes a barrel 110, a reel 120, and a volute spring 124, wherein the barrel has a first opening 116. The reel 120 is limited to rotate in the axle within the barrel 110, wherein one end 122 of the reel 120 extends out of the barrel 110. The volute spring 124 is a volute metallic reed, whose inner end is fastened on the reel 120. Thus the volute spring 124 follows the reel 120 to rotate, whereby a roll fastened on the volute spring 124 can be driven to rotate, too. Besides, the inner surface of the barrel 110 includes one or a plurality of prominent lines for decreasing the friction between inner surface of the barrel 110 and the outer surface of the roll. The forgoing barrel 110 is configured within a pen. The pen includes an outer casing 150 where the barrel 110 is fastened inside. Furthermore, the outer casing 150 includes a screw cap 160 connected with the end 122 of the reel 120 out of the barrel 110. Thus, the reel 120 can be reeled clockwise or counter-clockwise by reeling the screw cap 160. In addition, the outer casing includes a second opening 152, which has a inward bevel edge 154 on one side. The inward bevel edge 154 inclines toward another inward bevel edge of the first opening 116. The embodiment further includes a bottom plate 112, wherein said bottom plate 112 is connected to form the bottom of said barrel, and said bottom plate has a hole for locating the bottom end of said reel.
Moreover, the embodiment of the present invention further includes a binding slice 126, referring to FIG. 1C and FIG. 1D. The inner end 128 of the binding slice 126 is fastened and winded on the volute spring 124 for following the reel 120 to rotate. That is, the barrel 110, the binding slice 126, the volute spring 124, and the reel 120 form a binding slice containing barrel. Referring to FIG. 1E, the outer surface of the roll of the binding slice 126 is pushed to contact the inner surface of the barrel 110 by the volute spring 124 to form a tide roll layer upon layer. Therefore, the outer end of the binding slice 126 can be reeled out of the first opening 116 by rotating the reel 120 counter-clockwise (or clockwise) or reeled in the first opening 116 by rotating the reel 120 clockwise (counter-clockwise). Due to the first inward bevel edge 118 inclines into the first opening 116, the first inward bevel edge 118 pushes against the outer surface of the roll of the binding slice 126. After the outer end of the binding slice 126 is reeled to reach the first opening 116, the outer end of the binding slice 126 will contact the first inward bevel edge 118 and then be reeled out to reach the second opening 152 against the first inward bevel edge 118. FIG. 1F illustrates a diagram of a finished goods, a writing tool with a paper roll, according one embodiment of the present invention. The binding slice can be paper, self-adhesive paper, plastic slice, or other flexible material. When a user rotates the screw cap on the top of the writing tool 100 clockwise (A1 in FIG. 1F) or counter-clockwise (A2 in FIG. 1F), the forgoing binding slice will be reeled out or in toward the direction B 1 or B2 separately.
The foregoing description is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obvious modifications or variations are possible in light of the above teachings. In this regard, the embodiment or embodiments discussed were chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the invention as determined by the appended claims.

Claims

Barrel containing a binding slice (126), comprising:
a barrel (110) with a first opening (116);

a reel (120) limited to rotate in the axle of the barrel (110), wherein one end (122) of said reel (120) extends out of the barrel (110);

a volute spring (124), wherein said volute spring (124) is a volute metallic reed with an inner end fastened on said reel (120) for following the reel to rotate;

a binding slice (126), wherein the inner end of said binding slice (126) is fastened and winded on said volute spring (124) for following the reel (120) to rotate, and the outer surface of said binding slice (126) is pushed by said volute spring (124) to contact the inner surface of said barrel (110), wherein the outer end of said binding slice (126) can be reeled in/out by rotating said reel (120); and

a bottom plate (112), wherein said bottom plate (112) is connected to form the bottom of said barrel (110), and said bottom plate (112) has a hole for locating the bottom end of said reel (120).
Barrel according to claim 1, characterized in that said outer end of said binding slice (126) is reeled out of said first opening (116) of the barrel (110) by rotating said reel (120).
Barrel according to claim 1 or 2, characterized in that one side of said first opening (116) is a first inward bevel edge (118), and said first inward bevel edge (118) is against said outer surface of said binding slice (126), wherein said outer end of said binding slice (126) is guided by said first inward bevel edge (118) to be reeled out of said first opening (116).
Barrel according to one of the foregoing claims, characterized in that the inner surface of said barrel (110) comprises at least one prominent line for decreasing the friction between said inner surface of said barrel (110) and said outer surface of said binding slice (126).
Barrel according to one of the foregoing claims, characterized in that said binding slice (126) is a flexible material.
Barrel according to claim 5, characterized in that said flexible material is selected from the following group: a paper, a self-adhesive paper, and a plastic slice.
Writing tool with a barrel containing a binding slice according to claim 1, characterized by:
the first opening (116) of the barrel (110) comprising a first inward bevel edge (118);

a pen with an outer casing (150), wherein said outer casing (150) has a second opening (152) and said barrel (110) is configured inside said outer casing (150), wherein said second opening (152) is corresponding to said first opening (116) and the outer end of said binding slice (126) is reeled out of said second opening (152) by the guiding of said first inward bevel edge (118) of said first opening (116).
Writing tool according to claim 7, characterized in that one side of said second opening (152) comprises a second inward bevel edge (154) and said binding slice (126) is reeled out of said second opening (152) by the guiding of said first inward bevel edge (118) and said second inward bevel edge (154).
Writing tool according to claim 7 or 8, characterized in that the inner surface of said barrel (110) comprises at least one prominent line for decreasing the friction between the inner surface of said barrel (110) and the outer surface of said binding slice (126).
Writing tool according to one of claims 7 to 9, characterized in that said binding slice (126) is a flexible material.