JP4488376B2 - Book stand - Google Patents

Description

  The present invention relates to a book stand that makes it easy to read books with a large number of pages, such as encyclopedias, dictionaries, and academic research books.

  Some of the conventional book stands are made easy to read by adopting a book mounting plate having an elevation angle with the top of the book being raised and the side of the book being lowered.

  The present invention is to solve the difficulty of reading due to a step between a left spread portion and a right spread portion of a thick book and a curved surface generated in a region along the throat of the book, which could not be solved by a conventional book stand. It is what.

As means for solving the above-mentioned problems, a book placement plate is placed in a spread state for reading and is provided for reading, and the book placement plate is supported in such a manner that the book placement plate can be tilted to the left or right in the spread direction. The first spring means for urging the mounting plate in the right tilt direction and the second spring means for urging in the left tilt direction, and the book in a state where the urging force of the first spring means and the urging force of the second spring means are balanced The book mounting plate has a structure that keeps the posture of the mounting plate in a steady state, and the book mounting plate is placed on the book mounting plate according to the difference in weight between the left facing portion and the right facing portion of the book placed in the spread state. There is provided a book stand characterized by being configured to tilt left or right while resisting the urging force of either one of the two spring means.
In addition, the book has a book placement plate that is placed in a spread state for viewing, and supports the book placement plate so that the book placement plate can be tilted to the left and right, and the book placement plate is tilted in the right direction. The first spring means for urging the second spring means and the second spring means for urging in the left tilting direction, and the posture of the book placement plate in a state where the urging force of the first spring means and the urging force of the second spring means are balanced. The book mounting plate has a structure to keep steady, and the book mounting plate is placed on one of the first and second spring means by the difference in weight between the left spread portion and the right spread portion of the book placed in a spread state on the book placement plate. There is provided a book stand characterized in that it is configured to tilt leftward or rightward against the biasing force while following the other biasing force.
Further, as the first and second spring means, a double torsion spring having a pair of coil portions and a book placement plate urging portion located between the pair of coil portions is arranged symmetrically, and the book placement plate The book placement plate urging portion of the first double torsion spring or the second double torsion spring is caused by the left or right tilt of the book placement plate due to the weight difference between the left spread portion and the right spread portion of the book placed on the book. By twisting downward, the torsional elasticity is stored in the pair of coils of the first or second double torsion spring, and the book placement plate is urged and supported in the right or left direction by the torsional elasticity. The book stand according to claim 1 or claim 2 is provided.
Further, the tension coil springs are arranged symmetrically as the first and second spring means, and the book placement plate is tilted to the left by the weight difference between the left spread portion and the right spread portion of the book placed on the book placement plate. 3. The book loading plate is urged and supported in the right tilt direction or the left tilt direction by the tensile elasticity of the second tension coil spring or the first tension coil spring when tilted to the right. Provide a book stand.
In addition, in order to adjust the strength of the urging force of the first and second spring means, there are provided a support post that is a fixing part of both spring means and a left and right side plate that receives the urging force, and the support post is moved up and down to the left and right side plate. The book stand according to claim 1 or 2, wherein the urging force of both spring means is increased or decreased.

  In the present invention, as described above, when a book having a large number of pages and a large thickness is placed on a book placement plate in a spread state, the book placement plate is relative to the weight (thickness) of the left spread portion and the right spread portion of the book. Due to the difference, it is tilted leftward or rightward in the direction of heavy weight, and the step caused by the difference in thickness between the left spread portion and the right spread portion is eliminated by the right tilt or left tilt. As a result, it is possible to form a state in which the curved surface portion along the throat of the spread portion having a large thickness of the book is viewed as much as possible, and characters, pictures, etc. printed on the curved surface portion can be easily read.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

1, 3, 4, 5, and 6, reference numeral 1 denotes a book placement plate on which a book is placed. As shown in FIGS. 1A and 1C, the left side plate (1 a) and the right side of the book placement plate. The shaft (6a, 6b) located in the middle of the face plate (1b) is supported so as to be able to tilt left or tilt right.
To restate, the column (3) is raised from the center of the mounting base (2), and the left plate (1a) and the right plate ( 1b) is equally divided and the position is pivotally supported (6a, 6b).

Further, as shown in FIGS. 1A and 1B, the first spring means and the second spring means in the embodiment of the present invention are a kind of torsion coil springs arranged symmetrically about the axis (6a, 6b). One double torsion spring (4) and a second double torsion spring (9) are provided. The form of the double torsion spring is as shown in FIG. 2, and each part in this embodiment will be described later.
The relationship between the book placing plate (1) and the first and second double torsion springs (4, 9) will be described in detail with reference to FIGS. 1A and 1B. First and second double torsion springs (4, 9) Each book placement plate urging portion (4b, 9b) is in contact with the back side of the left side plate (1a) and the right side plate (1b) of the book placement plate (1). The urging forces of the double torsion springs (4, 9) are balanced, that is, the urging forces are both zero, and the book mounting plate (1) is kept in a steady posture.
Note that the fixing leg portions (4c, 9c) of the first and second double torsion springs (4, 9) are both double torsion springs provided on the column (3) as shown in FIG. 1, FIG. 3, FIG. Are inserted into the leg insertion holes (3a, 3b) and fixed.

Hereinafter, the configuration of the first and second double torsion springs (4, 9) and each part in the present embodiment will be described in detail with reference to FIG.
Each of the first and second double torsion springs (4, 9) includes a pair of coil portions (4a, 9a), an upper extension portion positioned between the pair of coil portions (4a, 9a), and the pair of coils. In the present embodiment, the upper extension portion is used as the book placement plate urging portion (4b, 9b), and the lower extension portion is provided at both side ends of the portion (4a, 9a). The protruding portion is used as a fixing leg (4c, 9c) for fixing the first and second double torsion springs (4, 9).
It should be noted that the book placing plate urging portions (4b, 9b) have a first and second double torsion springs (4, 9) arranged symmetrically in the left-right direction, and each has a fixed angle (α1). It is extended.

As shown in FIGS. 3A and 3B, the book (8) is placed in a spread state on the book placement plate (1), and the weight of the left spread portion (8a) and the right spread portion (8b) of the book ( When a difference occurs in the thickness), the book placement plate (1) is thicker and heavier while resisting the urging force of one of the first and second double torsion springs (4, 9). Tilt left (FIG. 3A) or right (FIG. 3B).
In other words, as shown in FIG. 3A, when the left spread portion (8a) is thick and heavy, the book placement plate (1) tilts to the left, and the first double torsion spring (4) carries the book. The book placement plate (1) in which the placement plate biasing portion (4b) is displaced downward, accumulates twisting elasticity in the pair of coil portions (4a) of the first double torsion spring (4), and tilts to the left by the twisting elasticity. Is supported while being urged to the right tilt direction.
Similarly, as shown in FIG. 3B, when the right spread portion (8b) is thick and heavy, the book placement plate (1) tilts to the right, and the second double torsion spring (9) places the book. The book placement plate (1) in which the placement plate biasing portion (9b) is displaced downward, accumulates twisting elasticity in the pair of coil portions (9a) of the second double torsion spring (9), and tilts to the right by the twisting elasticity. Is supported while being urged in the left tilt direction.

  Therefore, the step L (FIG. 3C) between the left spread portion (8a) and the right spread portion (8b) that should originally occur due to the difference in thickness between the double spread portions (8a, 8b) of the book (8) is the left tilt or the right tilt. As a result, the curved surface portion (8c) along the throat portion of the spread portion can be formed as a front-facing view as much as possible, and characters, pictures, etc. printed on the curved surface portion can be easily read. Can do.

Reference numeral 11 in FIG. 4 is an example of a spring urging force adjusting means for the first and second double torsion springs (4, 9). The spring urging force adjusting screw (11) attached to the recess (2a) of the mounting base (2). ) Of the bolt head (11b), and the threaded portion (11a) is screwed up or screwed down to raise or lower the column (3), and the book placement plate of the double torsion springs (4, 9). The urging force with respect to the left side plate (1a) and the right side plate (1b) of (1) can be increased or decreased.
Specifically, in FIG. 4A, the book placement plate urging portions (4b, 9b) of the first and second double torsion springs (4, 9) are connected to the left side plate (1a) and the right side plate (1) of the book placement plate (1). 1b) in the state of being in contact with the back surface of each of the double-torsion springs (4, 9) against the double-sided numbers (1a, 1b), that is, when the biasing forces are both zero, The posture of (1) is kept steady.
However, in FIG. 4B, as a result of rotating the bolt head (11b) of the spring biasing force adjusting screw (11) and screwing the threaded portion (11a) of the spring biasing force adjusting screw (11), the column (3) is The book placing plate urging portions (4b, 9b) of the first and second double torsion springs (4, 9) are displaced downward, and a pair of coil portions (4a) of each of the double torsion springs (4, 9) is moved up. 9a), the torsional elasticity is stored, and the double torsion springs (4, 9) cause the left side plate (1a) and the right side plate (1b) of the book placement plate (1) to tilt rightward and leftward by the torsional elasticity. Energize in the direction. However, the urging forces of the double torsion springs (4, 9) are balanced, that is, the urging forces of the double torsion springs (4, 9) against the double-sided plates (1a, 1b) of the book placement plate (1) increase equally. Thus, the posture of the book placing plate (1) is kept steady.
When the spring biasing force adjusting screw (11) is attached, the support post (3) is not fixed to the installation base (2) as shown in FIG. 4, and the support frame (10) attached to the installation base (2) is provided. It becomes the structure which guides the vertical motion of a support | pillar (3).

FIG. 4D shows a state in which the threaded portion (11a) of the spring biasing force adjusting screw (11) is retracted, and FIG. 4E shows a state in which the threaded portion (11a) of the spring biasing force adjusting screw (11) is screwed. Also, a weight difference occurs between the left spread portion (8a) and the right spread portion (8b) of the book (8) placed on the book placement plate (1), and the book placement plate (1) has the same inclination angle (Y ) Illustrates the case of tilting to the left.
As shown in FIG. 4E, the downward displacement angle (X2) of the book placement plate urging portion (4b) when the threaded portion (11a) is screwed is the book placement plate attached when the threaded portion (11a) is screwed away as shown in FIG. 4D. It becomes larger than the downward displacement angle (X1) of the urging portion (4b), and the first double torsion spring (4) moves the left face plate (1a) in the right tilt direction with a larger urging force than when the threaded portion (11a) is retracted. Energize and support.
Although illustration and detailed explanation are omitted, when the book placing plate (1) tilts to the right when the threaded portion (11a) is screwed as in the above case, the second double torsion spring (9) is screwed off the threaded portion (11a). The right face plate (1b) is supported by urging in the left tilting direction with a larger urging force than the time.
Therefore, by attaching the spring biasing force adjusting screw (11), it is effective when the heavier book (8) is placed and the book placing plate (1) is tilted to the left or to the right ( A greater biasing force can be applied to the first and second double torsion springs (4, 9).
However, when the book placing plate (1) tilts to the left when the threaded portion (11b) is screwed, as shown in FIGS. 4F and 4G, the book placing plate biasing portion (9b) of the second double torsion spring (9). Until the urging force of the second double torsion spring (9) against the right surface plate (1b) of the book mounting plate (1) becomes zero. ) Resists the urging force of the first double torsion spring (4) according to the urging force of the second double torsion spring (9), and thereafter the urging force of the first double torsion spring (4) as shown in FIGS. It is supported by tilting left while resisting.
Although illustration and detailed description are omitted, the book placement plate urging portion of the first double torsion spring (4) when the book placement plate (1) tilts to the right when the threaded portion (11) is screwed, as described above. The book placement board until (4b) returns to the steady state (4b ′), that is, until the urging force of the first double torsion spring (4) against the left face plate (1a) of the book placement board (1) becomes zero. (1) resists the urging force of the second double torsion spring (9) according to the urging force of the first double torsion spring (4), and thereafter tilts to the right while resisting the urging force of the second double torsion spring (9). Moved and supported.

Further, although illustrations are omitted with some exceptions, the present invention is a single torsion spring which is a kind of torsion coil spring, and a coil spring such as a push spring and a tension spring, as other examples of the double torsion springs (4, 9). Furthermore, using the spring means such as a leaf spring as the first and second spring means, the posture of the book placing plate (1) is kept steady with the urging force of both spring means balanced, and the book (8) When the book placement plate (1) tilts to the left or to the right when the weight difference occurs between the left spread portion (8a) and the right spread portion (8b), the left and right side plates of the book placement plate (1) are moved by the first spring means. (1a, 1b) is biased in the left tilt direction, and the second spring means biases the other of the left and right side plates (1a, 1b) of the book placement plate (1) in the right tilt direction. 8) The difference in thickness between the left spread part (8a) and the right spread part (8b) It encompasses the case of forming a state to eliminate the level difference L (FIG. 3c), and as much as possible directly facing view of the curved portion along the throat portion of the large spread of the thickness (8c) which cause.
FIG. 5 shows the case where the tension coil spring is used as the first and second spring means (4, 9) of the book stand in the present invention.

  Further, by attaching a rubber sheet or the like having frictional resistance to the surface of the book placement plate (1), the book placement plate (1) can be prevented from laterally shifting when the book placement plate (1) is tilted to the right and left. You can have it.

  In addition, as shown in FIG. 6, the readability can be further improved by providing the book placement plate (1) with a gradient (elevation angle α2). In this case, the vertical displacement of the book can be prevented by attaching the book vertical displacement prevention material (7) to the lower side of the book placement plate (1).

(A) is a front view of a book stand showing an embodiment of the present invention, (B) is a cross-sectional view showing an embodiment of the book stand, (C) is a side view showing an embodiment of the book stand. (A) is a perspective view of the first double torsion spring, (B) is a front view of the first and second double torsion springs, and (C) is a plan view of the first and second double torsion springs. (A) is a cross-sectional view (left weight load) when a book is placed on the book stand, (B) is a cross-sectional view (right weight load) when a book is placed on the book stand, (C) is The front view of the book when not using the same book stand. (A) is a partial cross-sectional view when a spring urging force adjustment screw is attached (when the spring urging force adjustment screw is retracted), and (B) is a partial cross-sectional view when a spring urging force adjustment screw is attached (spring urging force adjustment) (When screw screwing), (C) is a perspective view of the column and column frame, (D) is a partial cross-sectional view when the book placement plate is tilted to the left (when the spring biasing force screw is retracted), (E) is a book placement Partial cross-sectional view when the mounting plate is tilted left (when the spring biasing force adjusting screw is screwed), (F) is a partial cross-sectional view when the spring biasing force adjusting screw is attached when the book mounting plate is stationary (spring biasing force adjusting screw) (G) is a partial sectional view when the book placement plate is tilted to the left (when the spring urging force adjusting screw is screwed and the urging force of the second double torsion spring is zero), and (H) is a book placement. Partial sectional view when the plate is tilted to the left (when the spring urging force adjusting screw is screwed and the book placement plate urging portion of the second double torsion spring is stationary) (A) Front view with tension coil spring installed, (B) Front view with tension coil spring installed (left tilt), (C) Front view with tension coil spring installed (right tilt) FIG. 4 is a side view when the book placement plate has an elevation angle.

Explanation of symbols

1 Book placement board,
1a Left side plate 1b of the book placement plate Right side plate 2 of the book placement plate 2
2a Mounting base recess 3 Post,
3a Leg part insertion hole 3b of the first double torsion spring Step leg part insertion hole 4 of the second double torsion spring 4
4a A pair of coil portions 4b of the first double torsion spring 4b 'of the first double torsion spring 4b' of the book placement plate biasing portion (steady position) of the first double torsion spring
4c First double torsion spring fixing leg 6 axis,
6a shaft (front)
6b shaft (rear)
7 Books vertical slip prevention material 8 Books,
8a Book left spread 8b Book right spread 8c Book curved surface 9 Second double torsion spring,
9a A pair of coil portions 9b of the second double torsion spring Book placement plate biasing portion 9b 'of the second double torsion spring Book placement plate biasing portion (steady position) of the second double torsion spring
9c Leg for fixing the second double torsion spring 10 Strut frame 11 Spring urging force adjusting screw,
11a Threading portion 11b of the urging force adjusting screw 11b Bolt head L of the urging force adjusting screw Book spread portion step α1 Book placement plate urging portion extension angle α2 Book placement plate elevation angle X1 Book placement plate biasing portion displacement angle (screw) When the cut-out part is retracted)
X2 Book placement plate biasing part displacement angle (when threaded part is screwed)
Y Book placement board inclination angle (when screwed part is retracted and screwed)

Claims (5)

It has a book placement plate that is placed in a double-page spread state for viewing and supports the book placement plate so that it can be tilted to the left or right in the facing direction, and the book placement plate is attached to the right tilt direction. A first spring means for energizing and a second spring means for energizing in a leftward tilt direction, and the posture of the book mounting plate is made steady in a state where the urging force of the first spring means and the urging force of the second spring means are balanced. The book mounting plate has one of the first and second spring means due to the difference in weight between the left spread portion and the right spread portion of the book placed in a spread state on the book placement plate. A book stand that is configured to tilt left or right while resisting urging force. It has a book placement plate that is placed in a double-page spread state for viewing and supports the book placement plate so that it can be tilted to the left or right in the facing direction, and the book placement plate is attached to the right tilt direction. A first spring means for energizing and a second spring means for energizing in a leftward tilt direction, and the posture of the book mounting plate is made steady in a state where the urging force of the first spring means and the urging force of the second spring means are balanced. One of the first and second spring means for biasing the book placement plate by a difference in weight between the left spread portion and the right spread portion of the book that has a structure to be maintained and is placed in a spread state on the book placement plate This is a pedestal stand that is configured to tilt to the left or to the right while following the other biasing force. As the first and second spring means, a double torsion spring having a pair of coil portions and a book placement plate urging portion located between the pair of coil portions is arranged symmetrically and placed on the book placement plate. The book placement plate urging portion of the first double torsion spring or the second double torsion spring is displaced downward due to the left or right tilt of the book placement plate due to the difference in weight between the left and right facing parts of the book placed. Torsional elasticity is stored in the pair of coil portions of the first or second double torsion spring, and the book placement plate is urged and supported in the right tilt direction or the left tilt direction by the twist elasticity. The writing stand according to claim 1 or claim 2. The tension coil springs are arranged symmetrically as the first and second spring means, and the book placement plate tilts to the left or right depending on the weight difference between the left spread portion and the right spread portion of the book placed on the book placement plate. 3. The book review according to claim 1, wherein the book loading plate is urged and supported in the right tilt direction or the left tilt direction by the tensile elasticity of the second tension coil spring or the first tension coil spring. Stand. In order to adjust the strength of the urging force of the first and second spring means, there are provided a supporting post that is a fixing part of both spring means and a left and right side plate that receives the urging force, and both the springs against the left and right side plate are moved up and down. 3. The reading table according to claim 1, wherein the biasing force of the means is increased or decreased.

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