JP4414448B2 - 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 conventional bookshelves are made easy to read by adopting a 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 in reading due to the step between the left spread portion and the right spread portion of the book and the curved surface generated in the region along the throat of the book, which could not be solved by the conventional book stand. To do.

  As means for solving the above-mentioned problems, a book mounting plate is provided that is placed in a spread state and used for reading, and supports the book mounting plate so that it can be tilted to the left and right in the spread direction. A first spring means for urging the plate in the left tilt direction and a second spring means for urging the plate in the right tilt direction, wherein 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 for maintaining the posture of the book mounting plate in a steady manner, and the first mounting plate is mounted on the book mounting plate by the difference in weight between the left spread portion and the right spread portion of the book placed in the spread state. Provided is a book stand that is configured to resist one urging force of the second spring means and to be tilted left or right according to the other urging force, and further provided with a urging force adjusting means on the first and second spring means. .

  As described above, when a book with a large number of pages and a large thickness is placed on the placement plate in a spread state, the placement plate is in a direction in which the weight is increased due to a relative difference in weight (thickness) between the left spread portion and the right spread portion. Leftward tilting or rightward tilting eliminates the level difference caused by the difference in thickness between the left spread portion and the right spread portion 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 portion of the large spread portion of the book is viewed as directly as possible, and characters, pictures, etc. printed on the curved surface portion can be easily read, Furthermore, an urging force appropriate to the weight of the target book can be obtained by attaching the urging force adjusting means to the first and second spring means.

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

1 to 8, reference numeral 1 denotes a placement plate on which a book is placed, and is supported by a shaft (6) located between the left side plate (1 a) and the right side plate (1 b) so that it can be tilted to the left or right. ing.
In other words, the column (3) is raised from the center of the upper end and the center of the lower end of the mounting base (2), and the left plate (1a) and the right plate (1) of the mounting plate (1) are placed between the columns (3). 1b) is equally divided and the mounting plate (1) is pivotally supported on the center line.

Furthermore, a first spring means (4a) for biasing the book placing plate (1) in the left tilt direction and a second spring means (4b) for biasing in the right tilt direction are provided, and the first spring means (4a) The posture of the book mounting plate (1) is kept steady in a state where the urging force and the urging force of the second spring means (4b) are balanced (A in FIG. 1, A in FIG. 3, A in FIG. 5). 6A, FIG. 7).
In the example of FIG. 1A, a tension spring means represented by a coil spring is used as a spring means, one end of the first tension spring means (4a) is connected to the left face plate (1a), and the other end is attached to the mounting base (2). It connects with the position corresponding to the said connection point of this, and it always accumulate | stores tensile force between both connection points, and provides the mounting plate (1) with the tensile force to the left tilting direction.
Similarly, one end of the second tension spring means (4b) is connected to the right face plate (1b), and the other end is connected to a position corresponding to the connection point of the mounting base (2). A tensile force is accumulated to give the placing plate (1) a tensile force in the right tilt direction.

As shown in FIGS. 2A and 2B, the book (8) is placed in a spread state on the placement plate (1), and the weight (thickness) of the left spread portion (8a) and the right spread portion (8b) of the book. ), The mounting plate (1) follows a biasing force of one of the first and second spring means (4a, 4b) and resists the biasing force of the other in the direction of increasing thickness and weight. Tilt to the left (A in FIG. 2) or to the right (B in FIG. 2).
That is, as shown in FIG. 2A, when the left spread portion (8a) is thick and heavy, it follows the biasing force of the first spring means (4a) and the biasing force of the second spring means (4b). Tilt to the left.
Similarly, as shown in FIG. 2B, when the right spread portion (8b) is thick and heavy, it follows the urging force of the second spring means (4b) and the urging force of the first spring means (4a). Tilt to the right against.

  Therefore, the step (L in FIG. 1B) between the left spread portion (8a) and the right spread portion (8b) that should originally occur due to the difference in thickness of the book (8) is eliminated by the right tilt or the left tilt. As shown in FIG. 2, the curved surface portion (8c) along the throat of the left spread portion or the right 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 formed. Easy to read.

3 and 4 are examples in which a winder (9) is added as an urging force adjusting means to the case shown in FIG. 1A and FIG. The winder (9) is an example of a biasing force adjusting means for winding or unwinding one end of each of the first and second spring means (4a, 4b) to change the extension amount and adjust the biasing force. An appropriate biasing force is to be obtained according to the weight of the book (8).
To restate, the traction strip (9a) is connected to one end of the first and second spring means (4a, 4b, coil spring), and the other end of the traction strip (9a) corresponds to the installation base (2). The winding shafts (9b) of the pair of winders (9) attached at the positions to be connected to the winding shafts (9b) so as to be capable of winding and unwinding, and by rotating the dials (9c) by the same amount, ) And the amount of extension of the first and second spring means (4a, 4b) can be changed to adjust the strength of both urging forces.

  5 to 8 use the tension spring means represented by the coil spring as the first and second spring means (4a, 4b) as in the examples of FIGS. 3 and 4, and the left spread portion of the book (8). (8a) and the right spread portion (8b) are eliminated when the difference in weight between the double spread portions (8a, 8b) (L in B in FIG. 1) occurs, and the first and second spring means ( 4 shows another example of a method of adjusting the strength of both urging forces by changing the extension amount of 4a and 4b). However, the other example is different from the example of FIGS. 3 to 4 in which the winder (9) of the first and second spring means is attached to the mounting base (2), and the winder (9) is made of both spring means ( 4a, 4b) are integrated as common, and the mounting plate (1) is tilted to the left or right by attaching the winder (9) to the column (3), and depending on the weight of the target book (8) The case where the urging | biasing force of both spring means (4a, 4b) is adjusted simultaneously is illustrated.

  In the example of FIG. 5, a common winder (9) is attached to a column (3) that supports the center of the mounting plate, and the first and second spring means (4a, 4b) are attached to the winder (9). The pulling strip (9a) connected to one end of the pulling rod (9a) is coupled together with the winding shaft (9b), and the winding amount of the pulling strip (9a) is changed by rotating the dial (9c). The extension amount of the second spring means (4a, 4b) can be changed, and the strength of both urging forces can be adjusted simultaneously.

6, 7, and 8, the end of the first and second spring means are simultaneously wound or unwound by the winder (9) and the pulley (10) to change the extension amount and adjust the biasing force. In the case where the distance between the mounting plate (1) and the mounting base (2) is further shortened by using the pulley (10), that is, the height of the column (3) is lowered. Even in this case, it is possible to maintain the length of the pulling strip (a ′) necessary for the left tilt and the right tilt of the mounting plate (1).
To restate, in the example of FIGS. 6 and 7, the traction strip (9a) connected to one end of the first and second spring means (4a, 4b, coil spring) is provided in the column (3) as in the example of FIG. In addition to being connected to the winding shaft (9b) of the common winder (9) attached to the wire, it can be wound and unwound, and in FIG. 6, connected to the other ends of the first and second spring means (4a, 4b). The tow strip (9a ') is connected and fixed to the mounting base (2) via pulleys (10) attached to the corresponding positions of the mounting plate (1). Placement plate (1) via pulleys (10) attached to the respective corresponding positions of mounting base (2) with traction strips (9a ') connected to the other ends of the two spring means (4a, 4b) In the example of FIG. 6, the first and second spring means (4a, 4b) are provided on the lower surface of the mounting plate (1) in the example of FIG. Is horizontally provided in the first, upper surface of the second spring means (4a, 4b) mountings (2).
6 and 7, the amount of extension of the first and second spring means (4a, 4b) is changed by changing the winding amount of the pulling strip (9a) by rotating the dial (9c). You can change and adjust the strength of both energies at the same time.

  Further, as shown in FIG. 8, a connecting tool (3) for connecting the three points of the mounting plate (1), the column (3), and the winding shaft (9b) to the shaft support portion of the mounting plate (1) and the column (3). 11), the winding shaft (9b) and the mounting plate (1) can be integrated with the right tilting shaft and the left tilting shaft (6).

The winding device (9) shown in FIGS. 3 to 8 is provided with means for locking the winding shaft (9b) at a predetermined winding position. For example, as shown in FIGS. 3B and 3C, by retracting the dial (9c), the convex portion (9d) provided on the back surface of the winder (9) is provided on the winder support bracket (9e). The traction strip (9a) is unwound from the plurality of recesses (9f), and is moved forward again to engage with the corresponding other recess (9f), and the winding position of the winding shaft (9b). Can be held.
5, 6, and 7, the column (3) having a plurality of recesses (9 f) can be used in combination as the winder support bracket (9 e) to hold the winding position of the winding shaft (9 b). This is an example.
FIG. 8 shows that the projection (9h) of the column (3) is engaged with one of the plurality of recesses (9g) on the back of the winder (9) so that the winding position of the winding shaft (9b) can be maintained. This is an example.
Even if a ratchet gear is used as means for holding the winding position of the winding shaft (9b), the same effect can be obtained. However, since the winding shaft (9b) needs to rotate in both directions of winding and unwinding, the pawl or claw engaged with the gear is released from the gear when unwinding.

  Although not shown in the drawings, the present invention includes a first example of an elastic member such as a rubber string or a pressure spring means such as a pressure coil spring, a plate spring, a piston-type gas spring, or a hydraulic spring. The first spring means biases one of the left and right side plates of the mounting plate (1) in the left tilt direction or the right tilt direction, and the second spring means uses the second spring means (4a, 4b). Includes the case where the other plate is biased in the right tilt direction or the left tilt direction, and the mounting plate (1) maintains a steady state in which neither the left tilt nor the right tilt is maintained in a state where the biasing forces of the first and second spring means are balanced. To do.

Further, as shown in FIG. 1A, FIG. 2, FIG. 3A, FIG. 4, FIG. 5A, FIG. 6A, FIG. By attaching, the effect of lifting the back of the book can be further enhanced.
As a specific example, a narrow pillow-shaped ruler (backing material 5) having a convex curved surface (5a) at the top is extended along the central axis of the placing plate (1), and the back of the book (8) that is opened is opened. Is supported by the convex curved surface (5a) of the pillow ruler. This pillow-shaped ruler material, that is, the backing material (5) positions the spread line (throat line) of the book equally on the left side plate (1a) and right side plate (1b) of the placement plate (1) on the center line. .

  Further, by attaching a rubber sheet or the like having a frictional resistance to the surface of the mounting plate, it is possible to provide an effect of preventing the lateral displacement of the book when the mounting plate is tilted right and left.

  Furthermore, readability can be further improved by providing the mounting plate (1) with a gradient (elevation angle). In this case, the vertical displacement of the book can be prevented by attaching a face plate that supports the ground surface of the book to the lower side of the placement board (1).

(A) is a front view of a book stand showing an embodiment of the present invention, (B) is a front view of a book when the book stand is not used. (A) is a front view when the book is placed in a spread state (left weight addition), and (B) is a front view when the book is placed in a spread state (right weight addition). (A) is a front view of a book stand with a winder, (B) is a side view of the winder (when the winding shaft is rotating), (C) is a side view of the winder (when the winding shaft is locked) ). (A) is a front view (left weight load) when the book is placed in a spread state on the same book stand with a winder, and (B) is a book spread state on the same book stand with a winder. Front view when mounted with (right weight load). (A) is a front view when the biasing force simultaneous adjusting means of the spring means is added to the book stand, (B) is a side view of the biasing force simultaneous adjusting means (when the winding shaft is rotated), and (C) is the biasing force. Side view of simultaneous adjustment means (when winding shaft is locked). (A) is a front view when the biasing force simultaneous adjusting means with a pulley is attached to the bottom surface of the mounting plate, and (B) is a perspective view when the biasing force simultaneous adjusting means with a pulley is attached to the bottom surface of the mounting plate. Figure. The front view at the time of attaching the urging | biasing force simultaneous adjustment means to which the pulley was added to the upper surface of the installation base. (A) is a cross-sectional view when a pulley is added and the shaft of the mounting plate and the winding shaft of the biasing force simultaneous adjusting means are integrated, and (B) is a block where the pulley is added and the shaft and the biasing force of the mounting plate are added. The perspective view at the time of integrating the winding shaft of a simultaneous adjustment means.

Explanation of symbols

1 mounting plate,
1a Left side plate 1b of the mounting plate 2b Right side plate 2 of the mounting plate Mounting base 3 Post 4 Spring means,
4a First spring means 4b Second spring means 5 Backing material,
5a Backing material convex curved surface 6 axis 8 book,
8a Book left spread part 8b Book right spread part 8c Book curved surface part 9 Winder,
9a Towing strip (for connecting spring means and winder)
9a 'Towing strip (for connecting spring means and mounting plate or spring means and mounting base)
9b Winding shaft 9c Dial 9d Winder back projection 9e Winder support bracket 9f Winder support bracket recess or column recess 9g Winder back recess 9h Column projection 10 Pulley 11 Connector L Book spread

Claims (3)

Equipped with a book placement plate that is placed in a spread state for viewing and supports the book placement plate so that it can be tilted to the left and right in the spread direction, and the book placement plate is urged in the left tilt direction And a second spring means for urging in the right tilt direction, and the posture of the book mounting plate is 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 is attached to one of the first and second spring means depending on the weight difference 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 resist the force and to tilt left or right according to the other biasing force. The book stand according to claim 1, further comprising a backing material for pushing up the back of the book placed in a spread state on the book placement plate. 2. The book stand according to claim 1, further comprising a winder that winds a pulling strip connected to one end of each of the first and second spring means and extends the spring means to adjust a biasing force.

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