WO2002070276A1

WO2002070276A1 - Supporting ring board for table calender

Info

Publication number: WO2002070276A1
Application number: PCT/KR2001/000792
Authority: WO
Inventors: Yonggyu Park
Original assignee: Yonggyu Park
Priority date: 2001-03-08
Filing date: 2001-05-16
Publication date: 2002-09-12
Also published as: KR100398143B1; KR20010044584A

Abstract

The present invention relates to a supporting ring board for table calendars, comprising a bottom board portion, a front board portion foldably installed in the front of the bottom board portion, a back board portion foldably installed in the back of the bottom board portion, a first half-ring portion having a first joining portion, installed at and along an upper edge of the front board portion, for being joined to a facing portion and a plurality of first half-rings to be inserted in hole-punched sheets of the calendar, and a second half-ring portion having a second joining portion, installed at and along an upper edge of the back board portion, to be joined to the first joining portion and a plurality of second half-rings combinably facing the first half-rings.As the present invention is manufactured by injection molding, it is advantageous to a mass production and does not require punched holes and extra rings for the calendar. During assembly, as the process of inserting the extra rings for the calendar in the punched holes and the process of closing the open rings by force are omitted, the assembly process is so simple that a waste of labor can be dramatically reduced.

Description

SUPPORTING RING BOARD FOR TABLE CALENDAR

Technical field of the Invention

The present invention relates to a supporting ring board for a calendar, and more particularly, relates to a table calendar supporting ring board which is capable of holding a plurality of calendar sheets having punched holes at and along each upper edge thereof to show the dates of the present month, or of the following month when the page of the present month is turned over.

Description of the Background Art

In general, a supporting ring board for table calendars is a thick paper board which is foldable to form a triangular shape if laterally viewed and has a plurality of holes, formed at and along upper edges thereof, into which a plurality of open rings widely used for table calendars are inserted. The supporting ring board is ready to be used after hole-punched calendar sheets are inserted into the rings and then the open ends of the rings are closed by manual pressure to prevent removal of the calendar sheets. This generic prior supporting ring board for table calendars is explained with reference to FIG. 1. FIG. 1 is an exploded perspective view of a table calendar illustrating a prior supporting ring board for table calendars.

As shown in FIG. 1 , a prior table calendar 10 comprises a plurality of calendar sheets 12 showing dates and a supporting ring board 16 for hanging the calendar sheets 12 thereon. The prior supporting ring board 16 has a plurality of holes 18 at both upper edges of a foldable paper board 17, made of thick paper, which can be folded to form a triangular shape if laterally viewed. Spring-shaped calendar rings 19 which are widely used are inserted into the holes 18.

A process of making the prior table calendar 10 is as follows. First, the foldable paperboard 17 is made of a plurality of thick paper scraps to which inner sheets and coating sheets are adhered. Next, two edges of the foldable paperboard 17 are punched to form a plurality of small holes 18. As shown in FIG. 1 , in the state that the foldable paperboard 17 is folded to form the triangular shape, the calendar rings 19 are inserted into the holes 18. Then, the calendar sheets 12 having a plurality of holes 12a formed at and along each upper edge thereof are inserted into the rings 19. Finally, the table calendar 10 is completed by closing the open ends of the rings 19.

In manufacturing the prior supporting ring board 16 for table calendars, the process of making the table calendar 10 requires a lot of time and labor. In particular, it is difficult to insert the calendar rings 19 into the holes

18 of the foldable paperboard 17. Under this situation, it is more difficult to insert the calendar sheets 12 having many holes into the unstable rings 19.

Moreover, it is a hassle to uniformly close the open ends of the calendar rings 19 after the calendar sheets 12 are inserted into the calendar rings 19.

In order to recycle the prior supporting ring board 16 in offices and the like, the closed ends of the calendar rings 19 should be pulled apart to remove the old calendar sheets 12 and to refill new calendar sheets, and then the open ends of the calendar rings 19 are closed by manual work. However, this recycling work is such a hassle that most of the prior supporting ring boards have been disposed instead.

Further, the calendar rings of 20 millions are imported from other countries, so that foreign currency has been wasted a lot.

Disclosure of Invention

Therefore, it is an object of the present invention to provide a table calendar supporting ring board which is capable of dramatically reducing a manufacturing process, is feasible to assemble calendar sheets, and is easily recycled. The object of the present invention can be accomplished by providing a table calendar supporting ring board, for hanging a calendar sheet having a plurality of holes formed at and along an edge of the calendar sheet, which comprises a bottom board portion, a front board portion foldably formed in a front surface of the bottom board portion, a back board portion foldably formed in a back surface of the bottom board portion, a first half-ring portion, formed as a unified body at and along an upper edge of the front board portion, having a first joining portion for joining a facing portion and a plurality of first half-rings to be inserted into the holes of the calendar sheet, and a second half-ring portion, formed as a unified body at and along an upper edge of the back board portion, having a second joining portion to be joined to the first joining portion and a plurality of second half-rings facing and to be joined to the first half-rings.

It is preferable that the first half-ring portion is foldably formed on the front board portion at a predetermined angle and the second half-ring portion is foldably formed on the back board portion at a predetermined angle. It is preferable that the first joining portion comprises a first semicircular protrusion and a first joining groove, the first semicircular protrusion being protruded toward the second half-ring portion and having a jaw, and the first joining groove being formed near to the first semicircular protrusion toward which a slanted surface is formed and to which a stair is formed opposite, and the second joining portion comprises a second semicircular protrusion and a second joining groove, the second semicircular protrusion being protruded toward the first joining groove and having a jaw, and the second joining groove facing the first semicircular protrusion and being formed near to the second semicircular protrusion toward which a slanted surface is formed and to which a stair is formed opposite.

It is preferable that the first joining portion comprises a first joining protrusion protruded toward the second half-ring portion and having a jaw, and the second joining portion is a hole facing the first joining protrusion. It is particularly preferable that either a first protrusion or a first groove is formed at each end of the first half-rings, respectively, and either a second groove to be joined to the first protrusion or a second protrusion to be joined to the first groove is formed at each end of the second half-rings facing the first half-rings. It is preferable that weight reduction holes and weight reduction grooves for reducing weight are formed at the front board portion and the back board portion, respectively.

Brief Description of Drawings The above object and other advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings, in which:

FIG. 1 is an exploded perspective view of a table calendar illustrating a prior supporting ring board for table calendars. FIG. 2 is a perspective view showing a state that a table calendar supporting ring board according to the present invention is assembled.

FIG. 3 is a perspective view of the table calendar supporting ring board before assembly.

FIG. 4 is an unfolded view of the table calendar supporting ring board of FIG. 3.

FIG. 5 is a cross-section view illustrating a state that a first half-ring and a second half-ring are joined to each other.

FIG. 6 is each cross-section view illustrating the structures of a first joining portion and a second joining portion, respectively. FIG. 7 is a cross-section view illustrating a state that the first joining portion and the second joining portion are joined.

FIG. 8 is each cross-section view illustrating another examples of a first joining portion and a second joining portion, respectively.

FIG. 9 is a cross-section view illustrating a state that the first joining portion and the second joining portion in FIG. 8 are joined.

FIG. 10 is a perspective view showing another examples of a first joining portion and a second joining portion.

Best Mode for Carrying Out the Invention Hereinafter, a preferred embodiment of the present invention will be explained in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing a state that a table calendar supporting ring board according to the present invention is assembled. FIG. 3 is a perspective view of the table calendar supporting ring board before assembly. FIG. 4 is an unfolded view of the table calendar supporting ring board of FIG. 3.

As shown, a table calendar supporting ring board 100 according to the present invention is a unified body made by injection molding by the use of a resin, such as polyvinyl chloride and polypropylene, as a material. Each portion of the table calendar supporting ring board 100 is explained below.

The table calendar supporting ring board 100 comprises a bottom board portion 110 making contact with the bottom to have the table calendar supporting ring board 100 stood securely. A front board portion 120 is foldably formed in the front of the bottom board portion 110 and a back board portion 130 is foldably formed in the back of the bottom board portion 110. The table calendar supporting ring board 100 is foldable to form a triangular shape if laterally viewed.

As shown, grooves (R) for reducing weight are formed in the bottom board portion 110, the front board portion 120 and the back board portion 130, respectively. Further, reduction holes (H) are formed in the front board portion 120 and the back board portion 130. Although the grooves and/or the reduction holes are not essential to the present invention, they are preferably required to reduce product weight and/or waste of material.

At and along an upper edge of the front board portion 120, a first half- ring portion 140 is formed to be folded at a predetermined angle. At around both tips of the first half-ring portion 140, a couple of first joining portions 141 are formed to fasten their facing portions, respectively. Numbers of the first joining portions 141 are changeable, if necessary, and their forming positions are also changeable. The shape of the first joining portions 141 will be explained more in detail later. A plurality of first half-rings 146 are formed between the first joining portions 141. As shown, the first half-rings 146 in two groups may be spaced at a predetermined distance, or the first half-rings 146 may be uniformly spaced over the length. These first half-rings 146 are positioned on the outer surface of the first half-ring portion 140 and each end thereof has either first protrusions 147 or first grooves 148, respectively. This will be further illustrated in FIG. 5.

At and along an upper edge of the back board portion 130, a second half-ring portion 150 is formed to be foldable at a predetermined angle. At around both tips of the second half-ring portion 150, a couple of second joining portions 151 are formed to fasten the facing first joining portions 141 , - respectively. Numbers of the second joining portions 151 are changeable, if necessary, and their forming positions are also changeable. The shape of the second joining portions 151 will be explained more in detail later. A plurality of second half-rings 156 are formed between the second joining portions 151. These second half-rings 156 facing the first half-rings 146 are positioned on the outer surface of the second half-ring portion 150. At each end of the second half-rings 156, second protrusions 157 are formed to be joined to the first grooves 148 of the first half-rings 146, and second grooves 158 are formed to be joined to the first protrusions 147 of the first half-rings 146, respectively. This will be further illustrated in FIG. 5. The table calendar is completed in the following manners. First, either the first half-rings 146 or the second half-rings 156 are inserted into the holes 22 of the calendar sheets 20 punched at and along the respective upper edges thereof. Next, the first joining portions 141 and the second joining portions 151 are joined to each other. Then, the first protrusions 147 and the first grooves 148 are joined to the second grooves 158 and the second protrusions 157, respectively.

Accordingly, when the table calendar supporting ring board 100 is used, an assembly process thereof becomes simple. FIG. 5 is a cross-section view illustrating a state that a first half-ring and a second half-ring are joined to each other.

As represented in FIG. 5, the first half-ring 146 is formed on the first half-ring portion 140 which is foldably formed at the upper edge of the front board portion 120. The first protrusion 147 is formed at the end of the first half-ring 146.

The second half-ring 156 facing the first half-ring 146 is formed at the second half-ring portion 150 which is foldably formed at the upper edge of the back board portion 130 facing the front board portion 120.

The first half-ring portion 140 and the second half-ring portion 150 are attached to each other by fastening the first joining portion 141 and the second joining portion 151 , which will be explained later. At this time, the first half- ring portion 140 and the second half-ring portion 150 are bent against the front board portion 120 and the back board portion 130 at a certain angle, respectively. As shown, the first protrusion 147 of the first-half ring 146 is joined to the second groove 158 of the second half-ring 156. Of course, the first groove of the first half-ring 146 is joined to the second protrusion formed in the facing second half-ring 156.

As shown in FIG. 5, the calendar sheets are not removable when the first half-ring 146 and the second half-ring 156 are joined after the insertion of the calendar sheets.

FIG. 6 is each cross-section view illustrating the structures of a first joining portion and a second joining portion, respectively. FIG. 7 is a cross- section view illustrating a state that the first joining portion and the second joining portion are joined.

As shown, the first joining portion 141 comprises a first semicircular protrusion 143 and a first joining groove 145. The first semicircular protrusion 143 is protruded toward the second half-ring portion 150 and has a jaw 142. The first joining groove 145 is recessed near to the first semicircular protrusion 143, and has a slanted face 144 formed toward the first semicircular protrusion 143 and a stair 144a formed opposite to the slanted face 144. The second joining portion 151 to be joined to the first joining portion 141 has a symmetrical shape to the first joining portion 141. That is, the second joining portion 151 comprises the second semicircular protrusion 153 and the second joining groove 155. The second semicircular protrusion 153 is protruded toward the first joining groove 145 and has a jaw 152. The second joining groove 155 faces the first semicircular protrusion 143 and is formed near to the second semicircular protrusion 153 toward which a slanted surface 154 is formed and to which a stair 154a is formed opposite. That is, once the first half-ring portion 140 and the second half-ring portion 150 face each other and are press-attached together, the first semicircular protrusion 143 and the second semicircular protrusion 153 are joined to the second joining groove 155 and the first joining groove 145, respectively. In this state, the jaws 142, 152 are joined to the stairs 154a, 144a, respectively, so that they are engaged each other. The slanted surfaces 144, 154 are designed for the first semicircular protrusion 143 and the second semicircular protrusion 153 to be shoved in a single direction and to be inserted into and joined to the second joining groove 155 and the first joining groove 145, respectively. FIG. 8 is each cross-section view illustrating another examples of a first joining portion and a second joining portion, respectively. FIG. 9 is a cross-section view illustrating a state that the first joining portion and the second joining portion in FIG. 8 are joined.

The first joining portion 141 formed on the first half-ring portion 140 as shown may comprise a first joining protrusion 143a protruded toward the second half-ring portion 150 and having the jaw 142. The second joining portion 151 may be structured as a hole 155a facing the first joining protrusion 143a.

As shown in FIG. 10, on the portion that the first half-ring portion 140 and the second half-ring portion 150 face each other, triangular protrusions 141a, 151a and triangular grooves 141b, 151b may be formed to be joined to each other. On this occasion, the first half-ring portion 140 and the second half-ring portion 150 may not be fordable. The rest will be the same as described in FIGS. 2 to 4.

Industrial Applicability

While the present invention has been particularly shown and described with reference to a particular embodiment thereof, it will be understood by those skilled in the art that various changes and modifications can be made within the scope of the invention as hereinafter claimed.

As a table calendar supporting ring board according to the present invention is manufactured by injection molding, it is necessary neither to punch holes nor to have any extra calendar rings. Therefore, the table calendar supporting ring board is advantageous to mass production. As the process of inserting the extra calendar rings in the punched holes and closing the open rings by force is omitted and as the first and second half-rings do not move during the insertion of the calendar sheets, the assembly process is so simple that a waste of labor can be dramatically reduced.

Further, the table calendar supporting ring board is so easily attached and detached that it is advantageous to recycling.

And also, a cost price can be reduced in that a manufacturing process and materials can be reduced a lot. Moreover, there is an import substituting effect of the calendar rings relying on import.

In addition, the present invention may increase an opportunity for exporting the table calendars to many countries such as Japan and the United States, and may further achieve an investment effect on manufacturing machinery installation for the supporting ring board.

Claims

1. A table calendar supporting ring board for hanging a calendar sheet having a plurality of holes formed at and along an edge of the calendar sheet, comprising: a bottom board portion; a front board portion foldably formed in a front surface of said bottom board portion; a back board portion foldably formed in a back surface of said bottom board portion; a first half-ring portion, formed as a unified body at and along an upper edge of said front board portion, having a first joining portion for joining a facing portion and a plurality of first half-rings to be inserted into the holes of said calendar sheet; and a second half-ring portion, formed as a unified body at and along an upper edge of said back board portion, having a second joining portion to be joined to said first joining portion and a plurality of second half-rings facing and to be joined to said first half-rings.

2. The table calendar supporting ring board as claimed in claim 1 , wherein said first half-ring portion is foldably formed on said front board portion at a predetermined angle and said second half-ring portion is foldably formed on said back board portion at a predetermined angle.

3. The table calendar supporting ring board as claimed in claim 1 or 2, wherein said first joining portion comprises a first semicircular protrusion and a first joining groove, the first semicircular protrusion being protruded toward said second half-ring portion and having a jaw, and the first joining groove being formed near to said first semicircular protrusion toward which a slanted surface is formed and to which a stair is formed opposite, and wherein said second joining portion comprises a second semicircular protrusion and a second joining groove, the second semicircular protrusion being protruded toward said first joining groove and having a jaw, and the second joining groove facing said first semicircular protrusion and being formed near to said second semicircular protrusion toward which a slanted surface is formed and to which a stair is formed opposite.

4. The table calendar supporting ring board as claimed in claim 1 or 2, wherein said first joining portion comprises a first joining protrusion protruded toward said second half-ring portion and having a jaw, and wherein said second joining portion is a hole facing said first joining protrusion.

5. The table calendar supporting ring board as claimed in claim 1 or 2, wherein either a first protrusion or a first groove is formed at each end of said first half-rings, respectively, and either a second groove to be joined to said first protrusion or a second protrusion to be joined to said first groove is formed at each end of the second half-rings facing said first half-rings.

6. The table calendar supporting ring board as claimed in claim 1 or 2, wherein weight reduction holes and weight reduction grooves for reducing weight are formed at said front board portion and said back board portion, respectively.