WO2024014308A1 - Page holder - Google Patents

Abstract

[Problem] To provide a page holder which is capable of easily and reliably maintaining an open state by only being set to an open place of a book, is excellent in operability in reading forward and portability in carrying due to the small size and light weight thereof, has a simple structure, and can be manufactured with various materials. [Solution] A page holder according to the present invention is for maintaining an open state of a page of a placed book, the page holder being characterized by having: a first post longer than the width of the front cover of the book; a second post shorter than the width of a page which presses a page to be closed; and a third post which is connected to the first post and the second post and forms a space sandwiching the page.

Description

page holder

The present invention relates to a small and lightweight page holder that is easy to carry and is used to hold the pages of a book in an open state.　

In this specification and claims, "books" are not limited to books such as books, paperbacks, and textbooks, articles, catalogs, pamphlets, musical scores, etc. bound in one volume, but for example, It also includes documents that are not bound, such as loose-leaf documents or files that are removably organized in a binder.　

Various types of page holders (hereinafter referred to as page holders) for holding the pages of a book in an open state are known. For example, the page catcher described in Patent Document 1 has a U-shaped structure that pinches pages, and is said to have the ability to hold pages open and has excellent page turning operability. .

However, this page catcher only traps pages on one side, making it difficult to reliably suppress the force of the book itself to close the page, and it lacks the stability to hold the page open. Patent Document 1 describes that in order to ensure stability, an additional mechanism for fixing the page catcher using a weight, a magnet, or the like is required.

In addition, the book page holder described in Patent Document 2 solves the problem of page turning by sandwiching the page between the top surface of the main body and the clamping lid, and fixing the page there using the elastic force of rubber etc. ing.

However, since this book page holder uses the elastic force of rubber to hold the pages in place, it is not easy to turn the pages as it is necessary to lift the gripping lid or remove the rubber when turning the pages. . Furthermore, since the main body is relatively large and thick, there is a problem that it is not easy to carry.

Utility model registration No. 3226229 Utility model registration No. 3210114

As mentioned above, it is difficult for conventional page holders to have the stability to hold double-page spreads, the operability for turning pages, and portability.

The present invention was developed in view of these drawbacks of page holders, and allows the book to be easily and reliably held in the open position by simply setting it in the open area of the book, making it easier to operate while reading. To provide a page holder which has excellent portability due to its small size and light weight, has a simple structure, and can be easily manufactured from various materials.

The page holder 4 according to the present invention is a page holder for holding the pages of a placed book in an open state, and the first support 1, which is longer than the width of the cover of the book, is used to hold the pages of a book placed in an open state. A page holder characterized by having the second support 2 which holds down the page and is shorter than the width of the page, and the third support 3 which connects the first support 1 and the second support 2 and creates a space between which the page is sandwiched. 4.

Further, with the tip of the first support 1 as a fulcrum A, the second support 2 receives a force that is the product of the force B received from the page about to close and the distance from the fulcrum A to the point of application of the force B. Let the moment be M1, and the product of the force H due to the book's own weight, which the first support 1 receives through the book's spine, the corner of the spine, or the cover, and the distance from the fulcrum A to the point H of the force C. A page holder 4 characterized in that, when a moment of force is M2, the length of the first support 1 is determined such that the moment of force M2 is larger than the moment of force M1.

As shown in FIGS. 2, 3, and 4, the first support 1 is used as the lower surface, that is, the base, and the page to be closed and the cover of the book are sandwiched in the space between the first support 1 and the second support 2. 2 is used to hold down the page of the book that is about to be closed, and since the moment M2 of the force is larger than the moment M1 of the force, the page can be reliably held in an open state.

The tip of the second support 2 has a curved line or a straight line that is upward rather than parallel to the first support 1, so that the opening for inserting and removing pages is wide, making it easy to turn pages. Highly sexual.

Since the page holder 4 of the present invention has a simple structure, it can be manufactured at low cost, and is small and lightweight, so it is highly portable.

In this configuration, the page holder is provided with the first support 1 that is longer than the width of the cover of the book, and a fulcrum that becomes a new axis of rotation when the book is about to close is provided at the tip of the first support 1. By suppressing the moment M1 of the force received from the page and cover of the book that is about to be closed by the moment M2 of the force, which is larger due to the book's own weight, the book can be opened reliably without relying on the force of weights, magnets, etc. It is possible to keep pages that have been updated.

In addition, in this configuration, by providing the tip of the second support 2 with a curved or straight structure that is upward rather than parallel to the first support 1, pages can be easily inserted and removed when reading a book. can.

Moreover, since it has a simple structure, small size, and light weight, the second support 2 can serve as a bookmark by sandwiching it between pages, as shown in FIG.

Additionally, it has a simple structure, small size, and light weight, making it highly portable.

Since the page holder 4 according to the present invention has an extremely simple structure, it can be manufactured at low cost and can be designed in a variety of ways with excellent decorativeness.

Overall perspective view of a page holder according to this embodiment Diagram showing how the page holder is used as seen from the top of the book Diagram explaining how the page holder is used as seen from the facing page Illustration of how the page holder is used as seen from the back of the book Illustration of how the page holder is used when viewed from the front with the book closed Diagram of how the page holder is used, viewed from the back with the book closed Side view of the page holder according to this embodiment Side view of an example of a page holder according to this embodiment

In the page holder 4 according to the present invention, the first support 1, the second support 2, and the third support 3 try to close without being significantly deformed by the moments M1 and M2 of the force shown in FIG. Any material having sufficient strength to hold down the page may be used, such as metal, resin, or a mixture of metal and resin.

The basic structure of the page holder 4 according to the present invention consists of the first support 1, the second support 2, and the third support 3, but it is closed by the first support 1 and the second support 2. The third support 3 may have any form, as shown in several examples in FIG. 8, as long as it can sandwich the page to be closed, reliably contact and press the page to be closed.

As shown in FIG. 7, the maximum space length I parallel to the first support 1 of the space sandwiching the page surrounded by the first support 1 and the second support 2 is such that it closes with the second support 2. It is preferable to have a length that ensures reliable contact with the page.

As shown in FIG. 7, the maximum space height II perpendicular to the first support 1 of the space between the pages formed by the first support 1 and the second support 2 is such that the book is opened exactly in half. In order to reliably sandwich the page that is about to be closed, it is preferable that the length be at least half the thickness At of the book shown in FIG. 6 at the shortest.

The length of the first support 1, the second support 2, and the third support 3 may be adjustable according to the size of the book using various length adjustment mechanisms such as sliding and folding. .

The second support 2 is placed between the pages when the book is closed and plays the role of a bookmark, so in order to avoid damaging the pages, the second support 2 is flat with respect to the page surface and has no corners, as shown in FIG. It is preferable that the shape is as thin as possible while having a strength capable of withstanding the stress of moments M1 and M2.

Further, when the first support 1 is used as a bookmark, the first support 1 faces the back cover, and in order to prevent the first support 1 from protruding from the back cover, as shown in FIG. It is preferable that the width t is smaller than the thickness At of the book.

When using metal, a metal plate or metal bar can be formed by punching or press molding.

When using resin, plastic, etc. to reduce weight, injection molding can be used.

When using multiple members, it is also possible to put metal in resin and integrally mold them.

If multiple members are to be jointed and can be considered as one object, they can be joined using adhesive, physical pressure, bolts, etc., and the stress of the moments M1 and M2 of the force shown in Fig. 2 can be applied. Must have a durable form and strength.

1 First support 2 Second support 3 Third support 4 Main body A Book At Thickness of the book B Gutter of the book C Edge of the book D Spine of the book E Table on which the book is placed A Support point B From the page you are trying to close Force received C Force received from the book's own weight D Point of action of the force received from the book's own weight E Point of action of the force received from the book's own weight M1 Moment of force received from the page to be closed M2 Moment of the force received from the book's own weight Moment I Space length II Space height t Width of first column 1

Claims (2)

This is a page holder for holding the pages of a placed book in an open state, and the first support (1) is longer than the width of the cover of the book, and is shorter than the width of the page that holds the page that is about to be closed. A page holder ( 4 ).

The tip of the first support (1) is the fulcrum (a), the force (b) that the second support (2) receives from the page about to close, and the point of action of the force (b) from the fulcrum (a). Let M1 be the moment of force, which is the product of the distance from When the moment of force, which is the product of the distance from the fulcrum (A) to the point of application (E) of the force (C), is M2, the length of the first support (1) is equal to the amount of the force (E). Page holder according to claim 1, characterized in that the moment (M2) is determined to be greater than the moment (M1) of said force.