JP6851526B1 - Book stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be able to store compactly, to realize weight reduction without using a weight, and to make it easy to turn a page. The present invention includes a shaft on which a spine of a book is placed, four arms having a roll portion for holding a double-page spread of a book, and a book stopper including two joint portions connecting both ends of the shaft and the arms. In each of the two joints, two of the four arms are connected to the end of the shaft, and the arms are rotatable around the shaft. The roll portion is detachably attached to the end opposite to the joint portion, and when holding the book, the length of the shaft can be adjusted according to the size of the book, and the opening angle of the book is adjusted. The book stopper is characterized in that the shaft is rotated around the shaft by the joint portion, and the roll portion is pulled out from the arm to hold the spread page of the book by the roll portion. [Selection diagram] Fig. 4

Description

The present invention relates to a foldable book stopper that can be folded to a size that fits in a pencil case, facilitates the work of turning pages, and is lightweight.

Many of the conventional book stoppers are shaped like clothespins, and have a shape that sandwiches pages. Moreover, although it could be used only as a set of two, there is no particular problem in use. When turning the page, the book stopper is removed before turning the page. And each one has a weight to hold down the book.

However, the shape of sandwiching the pages increases the time and effort required to turn the pages by one. In addition, since it is a set of two, it is necessary to put them in a bag when carrying them, which increases the amount of luggage by one.

As a remedy, I thought about making it easy to carry by folding it to a size of about 15 cm and putting it in a pencil case, and reducing the weight by using plastic as the whole material without using weights. ..

Actual climb 3064020 Actual climb 3060723 Patent 6281035

The conventional book stopper has the following drawbacks.
(A) It takes time to carry (b) The page is difficult to turn (c) It is large and heavy The present invention was made in order to eliminate the above drawbacks.

To make it easier to carry, it is folded to a size that fits in a pencil case, and a roller is attached to the part that holds the page to make it easier to turn the page, and a weight is not attached to reduce the weight. The present invention has these as the most important features.
Specifically, it has the following features.
(1) The present invention is a book stopper including a shaft on which the spine of a book is placed, four arms having a roll portion for holding a double-page spread of a book, and two joint portions connecting both ends of the shaft and the arms. At each of the two joints, each of the two arms of the four arms is connected to the end of the shaft so that the arms can rotate around the shaft. The roll part is attached to the end opposite to the joint part so that it can be pulled out, and when holding the book, the length of the shaft can be adjusted according to the size of the book and according to the opening angle of the book. The book stopper is characterized in that the shaft is rotated around the shaft by the joint portion and the roll portion is pulled out from the arm to hold the spread page of the book by the roll portion.

(2) In addition to (1), the present invention can be folded into a rectangular shape by using the function of shortening the length of the shaft and the function of closing the arm and folding the shaft. Is a combination of five elongated rectangular body-shaped portions of a shaft (large), a shaft (medium), a shaft (small), a shaft (medium), and a shaft (large) from one end side to the other end side of the shaft. It has a nested structure in which the shaft (small) can enter the shaft (middle) and the shaft (middle) can enter the shaft (large), and the length of the shaft is adjusted. The mechanism is a mechanism for adjusting the length of the shaft by pulling out the shaft (small) from the shaft (middle) or pulling out the shaft (middle) from the shaft (large). Features

(3) In the present invention, in addition to (1) or (2), there are two gears in the joint portion, and the root portions of the two arms are connected and fixed to the two gears, respectively. The two gears are engaged with each other, and when one of the arms is rotated, the other arm is also rotated by the same angle. Further, a gear fixture is arranged below the joint portion. The fixture has a protrusion having the same size as the tooth of the gear at a portion where the fixture and the gear are in contact with each other, and when the fixture is pushed in, the protrusion engages with the gear to rotate the gear. When the gear is pulled out, the protrusion does not mesh with the gear, and the gear is released.

In the foldable book stopper of the present invention, the book can be fixed by holding the book with the arm portion and fixing the arm without the need for a weight, and by attaching a roll to the pressing portion, the page of the book can be fixed. It becomes easier to turn pages by sliding the button on that part. In addition, by expanding and contracting the shaft portion, there is an advantage that books of different sizes can be accommodated.

FIG. 1 is a diagram showing a folded state of the foldable book stopper of the present invention. FIG. 2 is a diagram showing a state in which the arm of the foldable book stopper of the present invention is placed and opened in a direction perpendicular to a plane. FIG. 3 is a diagram showing a state in which the foldable book stopper of the present invention is opened. FIG. 4 is a diagram showing a state in which the roll portion is pulled out from the arm of the foldable book stopper shown in FIG. FIG. 5 is an enlarged view of the joint portion shown in C in the drawing. FIG. 6 is a diagram showing a portion of a gear and a gear fixture for interlocking two arms inside the joint portion shown in FIG. FIG. 7 is a diagram showing a state in which the fixture shown in FIG. 6 is released. FIG. 8 is an enlarged view showing a state in which the roll portion on the arm portion is pulled out. FIG. 9 is a diagram showing a state of the shaft. FIG. 10 is a diagram in which the gear and the arm in FIG. 5 are removed so that the state of the axis shown by the broken line in FIG. 6 can be seen. FIG. 11 is a diagram showing a state when the foldable book stopper of the present invention is used.

FIG. 11 is a diagram showing a state when the foldable book stopper of the present invention is used. Open the book E, place the spine of the book on the shaft B, and place the four arms A (A (1), A (2) of the book stopper of the book stopper of the present invention (hereinafter, also simply referred to as the book stopper). ), A (3), A (4)) The roll part D (D (1), D (2), D (3), D (4)) holds the double-page spread of this E, and this E And you can prevent the page from moving.

FIG. 1 is a diagram showing a folded state of the foldable book stopper of the present invention. The foldable book stopper of the present invention can be folded from the shape of the used state shown in FIG. 11 to the state shown in FIG. That is, the arm (A (1), A (2)) is attached to the axis (large) (B (1-a)), and the arm (A (3)) is similarly attached to the axis (large) (B (1-b)). ), A (4)) and two axes (large) can be attached to make it in a folded state. When folded, it can be folded into an elongated rectangular parallelepiped box shape as shown in FIG. 1 and becomes compact, so that it is easy to carry. When folded, it has a length of 15 cm, a width of 2.5 cm, and a height of about 1 cm, and can be put in a pencil case.

FIG. 2 shows a state in which the arms A (A (1), A (2), A (3), A (4)) of the foldable book stopper of the present invention of the present invention are placed and opened in the direction perpendicular to the plane. It is a figure which shows. Joint portions C are attached to both ends of the shaft B, and arm A of the book stopper is attached to the joint portion C. That is, as shown in FIG. 2, the arms A (A (1), A (2)) of the two book stoppers are attached to one joint portion C, and the arms (A (3), A) of the two book stoppers. (4)) is attached to the other joint portion. The arm A (A (1), A (2), A (3), A (4)) of the book stopper is a gear (C (1-a), C (1-b)) inside the joint portion C. The height can be changed according to the thickness of the book by placing it around (shown in FIG. 6) and rotating it perpendicular to the plane.

FIG. 3 is a diagram showing a state in which the foldable book stopper of the present invention is opened. From the state shown in FIG. 1, the shafts (large) (B (1-a), B (1-b)) are extended according to the size of the book, and the arms attached to the shaft B ((1), A (2)). , A (3), A (4)) can be opened 90 ° parallel to the ground to move to the work shown in FIG. From one end side to the other end side, five elongated rectangular parallelepiped-shaped portions of a shaft (large), a shaft (medium), a shaft (small), a shaft (medium), and a shaft (large) are connected. Further, the shaft B has the shaft (middle) (B (2-a)) nested inside the shaft (large) (B (1-a)), and the shaft (middle) (B (2-a)). a)) can be pulled out from the shaft (large) (B (1-a)) and extended. Further, the shaft B has the shaft (middle) (B (2-b)) nested inside the shaft (large) (B (1-b)), and the shaft (middle) (B (2-b)). b)) can be pulled out from the shaft (large) (B (1-b)) and extended. Further, the shaft (small) B (3) is nested inside the shaft (middle) (B (2-a)) and the shaft (middle) (B (2-b)), and the shaft (small) B (3) can be pulled out and extended from the shaft (middle) (B (2-a)) and the shaft (middle) (B (2-b)). By adjusting these stretch lengths, books of various sizes can be adapted. Further, if all of these shafts are pushed in, the size can be reduced to a state in which the shafts B (1-a) and the shafts (1-b) are aligned, as shown in FIG. The shape of the shaft is an elongated rectangular parallelepiped shape as shown in FIG. 3 and the like (axis (large), shaft (medium), and shaft (small)), respectively. For book stoppers for A4 to A3 size books, for example, shaft B (large) has a length of 8 cm, width cm, and height of about 1 cm, and shaft B (medium) has a length of 5 cm and shaft B. (Small) has a length of about 5 cm, and the width and height of the shaft B (medium) are such that the shaft B (medium) can be inserted inside the shaft B (large). The width and height are such that the shaft B (small) fits inside the shaft B (medium).

FIG. 4 shows the roll portions (D (1), D (2), D) from the arms A (A (1), A (2), A (3), A (4)) of the foldable book stopper shown in FIG. It is a figure which shows the state which pulled out (3), D (4)). In the state shown in FIG. 1, the roll portions (D (1), D (2), D (3), D) are attached to the respective arms (A (1), A (2), A (3), A (4)). (4)) was stored and the arm and the shaft were attached to each other, but as shown in FIG. 11, the page of the book can be held down by pulling it out.

FIG. 5 is an enlarged view of the joint portion shown in C in the drawing. The arm stopper (C (3)) has the function of suppressing the arm A (A (1), A (2), A (3), A (4)) from opening more than 90 °, and has the function of holding the gear. By moving the fixture (C (4)) back and forth, the movement of the internal gears (C (1-a), C (1-b)) can be stopped or released. In FIG. 5, since the gear is pushed in, the gear is fixed.

FIG. 6 shows the gears (C (1-a), C (1-b)) and the gear fixtures (C (4)) for interlocking the two arms inside the joint portion shown in FIG. It is a figure which showed the part. The arm stopper (C (3)) is removed and shown. The arm A (A (1), A (2), A (3), A (4)) and the gear (C (1-a), C (1-b)) are fixed, respectively, and the gear (C). When (1-a) C (1-b)) rotates, arms A (A (1), A (2), A (3), A (4)) and gears (C (1-a), C ( 1-b)) also rotates integrally. Gears (C (1-a), C (1-b)) can be fixed by attaching protrusions similar to the teeth of the gear to the gear fixture (C (4)), and this is on the front side. The protrusion can be disengaged from the gear (C (1-a), C (1-b)) and released.

FIG. 7 is a diagram showing a state in which the fixture (C (4)) shown in FIG. 6 is released. As described in the preamble, by pulling out the gear fixture (C (4)) toward you, the protrusion will come off the gear and can be released.

FIG. 8 shows roll portions (D (1), D (2), D (3), D (4)) on the arms (A (1), A (2), A (3), A (4)). It is an enlarged view showing the state which pulled out. There is a shaft at the base of the roll part, and it is pulled out by rotating around it. Further, since the roll portion (D (1), D (2), D (3), D (4)) has a cylindrical shape as shown in FIG. 8 and can rotate around the central axis. You can easily turn the pages of the book even while holding down the double-page spread of the book E.

FIG. 9 is a diagram showing a state in which the shaft is extended. The shaft B has a structure like a folding umbrella handle or a nest, and the shaft (middle) (B (2-a), B (2-b)) has a groove, and the shaft (small) (B ( The protrusion in 3)) slides in the groove so that it can expand and contract. There are protrusions similar to the shaft (small) (B (3)) inside the shaft (large) (B (1-a), B (1-b)), but both protrusions are the shaft (medium) ( Since it is half the thickness of the grooves of B (2-a) and B (2-b)), it can be slid without hitting.

FIG. 10 is a diagram in which the gear and the arm shown in FIG. 5 are removed so that the gear shafts (C (2-a) and C (2-b)) can be seen. Although the joint portion C is connected to the shaft B (B (1-b)), in reality, as shown in FIG. 10, the gear shafts (C (2-a), C (2-b)) Is attached to and fixed to the shaft B (B (1-b)), and the gears (C (1-a), C (2)) are attached to the gear shafts (C (2-a), C (2-b)). 1-b))) is attached and fixed, and as shown in FIG. 5, the arm A (A (1)) of the book stopper is attached to the gears (C (1-a), C (1-b)). , A (2) or A (3), A (4)) are attached and fixed. The gears (C (1-a), C (1-b)) can rotate around the gear shafts (C (2-a), C (2-b)). Therefore, the arm A of the book stopper can also rotate together with the gears (C (1-a) C (1-b)).

Since the pages of a book can be fixed open without folding, it can be used for displaying valuable books at museums and other facilities, and for books in libraries.

A (1) to A (4) Arm B (1-a), B (1-b) Axis (Large)
B (2-a), B (2-b) axis (middle)
B (3) Axis (Small)
C Joint part C (1-a), C (1-b) Gear C (2-a), C (2-b) Gear shaft C (3) Gear fixture C (4) Arm stopper D ( 1) to D (4) Roll part E book

Claims (6)

A book stopper including a shaft on which the spine of a book is placed, four arms having a roll portion for holding a double-page spread of the book, and two joint portions connecting both ends of the shaft and the arms. At each joint, two of the four arms are connected to the end of the shaft, the arm is rotatable around the shaft, and the roll is with the joint. It is attached to the opposite end so that it can be pulled out, and when holding a book, the length of the shaft can be adjusted according to the size of the book, and the arm is attached to the joint portion according to the opening angle of the book. A book stopper having a function of rotating around the shaft and pulling out the roll portion from the arm to press the spread page of the book with the roll portion. The book stopper according to claim 1, wherein the book stopper can be folded into a rectangular parallelepiped shape by using the function of shortening the length of the shaft and the function of closing the arm and folding the shaft. The shaft is formed by connecting five elongated rectangular parallelepiped-shaped portions of a shaft (large), a shaft (medium), a shaft (small), a shaft (medium), and a shaft (large) from one end side to the other end side of the shaft. It has a nested structure in which the shaft (small) can enter the shaft (middle) and the shaft (middle) can enter the shaft (large), and the length of the shaft can be adjusted. The adjusting mechanism is a mechanism for adjusting the length of the shaft by pulling out the shaft (small) from the shaft (middle) or pulling out the shaft (middle) from the shaft (large). The book stopper according to claim 1 or 2, wherein the book stopper is characterized in that. There are two gears in the joint portion, and the root portions of the two arms are connected and fixed to the two gears, respectively, and the two gears are engaged with each other. The book stopper according to any one of claims 1 to 3, wherein the other arm also rotates by the same angle. A gear fixture is arranged below each of the joint portions, and the fixture has a protrusion having the same size as the teeth of the gear at a portion where the fixture and the gear are in contact with each other. 1. When the protrusion is pushed in, the protrusion engages with the gear to prevent the rotation of the gear, and when the protrusion is pulled out, the protrusion does not mesh with the gear and is released. The book stopper according to any one of 4. The roll portion has a function of rotating the roll portion together when the page is slid when turning the page of the roll portion, and it is possible to eliminate the removal of the roll portion when turning the page. The book stopper according to any one of claims 1 to 5, wherein the book stopper is provided.

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