JPH10137045A - Apparatus for music stand and reading easel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically turn over respective sheets by reciprocally rotating an inclined shaft at a specific angle by a driving mechanism, and attracting a permanent magnet of a turning arm to an iron piece on the upper end of the respective sheets. SOLUTION: A magnet holding body 6 on the tip of a turning arm 2 is positioned on sheets of double spread pages, and a permanent magnet 7 attracts an iron piece of the sheets. A shaft part 4 of the turning arm 2 is reciprocally rotated by a driving mechanism 3 by operating a foot switch 13 once, and an arm part 5 is turned, and is restored again thereafter. Since an inclination θis imparted in the vertical direction of a placing stand 1 to the shaft part 4 of the turning arm 2, the permanent magnet 7 tries to be gradually displaced upward to the iron piece just after turning is started. The permanent magnet 7 is slightly displaced upward until the iron piece is put in an attracting condition on its lower end, and when the turning advances further, the permanent magnet 7 slips out of the iron piece, and finally, it turns up to a position exceeding a turning angle 180 deg. from a turning start end position, and restraint by the permanent magnet 7 is released, and turning-over of the sheets is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device used as a so-called music stand or reading stand for viewing music or books, and more particularly, to an automatic turning function for each sheet of music or books. It relates to a device having.

[0002]

2. Description of the Related Art In general, when a music stand is used for playing a musical instrument, it is the player himself or a performance assistant who turns over each sheet (leaf piece) of the music placed on the music stand. Conventionally,
In order to eliminate the complexity of the music sheet turning operation during such a performance, some music stands having an automatic sheet turning function have been proposed. In addition, such a device may be used not only as a music stand but also as a reading stand when a person with a hand or a physical disability reads a book.

[0003]

However, the instrument proposed in the prior art has a sheet of music or a book (hereinafter, these are collectively referred to as a "booklet" for the sake of convenience of description), and each sheet is continuously and reliably. The function of flipping was not enough, and there was difficulty in practical use. Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, to have a simple structure, and to be able to turn each sheet of a booklet one by one continuously and reliably without using a hand. It is an object of the present invention to provide an appliance for reading or a reading stand.

[0004]

In order to achieve such an object, the present invention has the following arrangement. (1) An inclined mounting table 1 for mounting a booklet on which a sheet made of paper or plastic is bound in a state of leaning against the front surface, and a turning arm 2 for turning a sheet attached to the mounting table 1 And a driving mechanism 3 for driving the turning arm 2. The turning arm 2 is rotatably held along a vertical direction of the mounting table at a substantially central position in a width direction of the mounting table, and a lower end thereof is driven by the driving mechanism. A shaft portion 4 that is rotatably driven by being connected to a driving portion of the mechanism 3, an arm portion 5 that is coupled to an upper end of the shaft portion 4 that protrudes from an upper edge of the mounting table 1, It comprises a magnet holder 6 attached to the tip and a permanent magnet 7 fixed to the magnet holder 6 so as to face the front surface of the mounting table, and the shaft portion 4 is inclined with respect to the vertical direction of the mounting table. The drive mechanism Has a mechanism for rotating the shaft portion 4 forward and backward at a rotation angle of more than 180 °, and attaches the permanent magnet 7 constituting the revolving arm 2 to the upper end of each sheet of the booklet placed on the placing table 1. An instrument for a music stand or a reading stand, wherein each sheet is automatically turned by a turning operation of a turning arm 2 by being attracted to a given iron piece or iron foil.

(2) In the instrument of the above (1), the inclination angle θ of the shaft portion 4 constituting the revolving arm 2 with respect to the vertical direction of the mounting table is 3 to 15 °. Appliances. (3) In the instrument of the above (1) or (2), the permanent magnet 7 constituting the revolving arm 2 is a rubber magnet, and the instrument for a music stand or a reading stand is provided. (4) In the device of (1), (2) or (3) above, in the case of a device for a left-bound booklet, the inclination angle θ of the shaft portion 4 with respect to the vertical direction of the mounting table is set at the front of the mounting table 1. In the case of an instrument for a right-bound booklet, the inclination angle θ of the shaft portion 4 with respect to the mounting table vertical direction.
A music stand or a lectern for a music stand, wherein the inclination angle is such that the inclination angle rises to the left toward the front surface of the mounting table 1.

[0006]

1 to 5 show an embodiment of the device of the present invention. FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a cross-section taken along line III-III of FIG. 4 is a rear view of the magnet holder, and FIG. 5 is a side view of the same. The apparatus according to the present invention includes an inclined mounting table 1 for mounting a booklet in a state where it is leaned on the front surface, a turning arm 2 for turning over a sheet attached to the mounting table, and an apparatus for driving the turning arm. And a drive mechanism 3. The mounting table 1 has an overhang portion 100 for mounting a booklet on the front surface of the lower end. The turning arm 2 includes a shaft portion 4 rotatably held by the mounting table 1 and a mounting table 1.
An arm 5 coupled to the upper end of the shaft 4 protruding from the upper edge of the shaft 4, a magnet holder 6 attached to the tip of the arm 5, and a front surface of the mounting table facing the magnet holder 6. And the permanent magnet 7 fixed as described above.

The shaft portion 4 is rotatably held by the mounting table 1 so as to have an inclination angle θ with respect to the vertical direction of the mounting table. As described above, a major feature of the present invention is that the shaft portion 4 has the inclination angle θ with respect to the mounting table vertical direction.
As a result, the permanent magnet 7 immediately after the sheet has been turned over by one turning operation of the turning arm 2 (turning operation in the forward direction) is replaced with an iron piece or an iron foil (hereinafter referred to as an “iron piece”) on the sheet side that has attracted the permanent magnet 7. ) Can be smoothly separated from each other, thereby enabling continuous automatic turning of each sheet of the booklet. The inclination angle θ of the shaft portion 4 with respect to the vertical direction of the mounting table is 3 to 15 °, preferably 5 to 12 °, and more preferably 6 to 10 °. If the inclination angle θ is less than 3 °, the permanent magnet 7 cannot be separated smoothly from the iron piece on the sheet side, while the inclination angle is 1
If the angle exceeds 5 °, the permanent magnet 7 is separated from the iron piece on the sheet side at an early stage during the turning of the turning arm 2, so that the sheet released from the restraint by the turning arm 2 returns to the original position. It is not preferable because a malfunction occurs.

The shaft portion 4 in the present embodiment has a part in the radial direction which is vertically inclined on the back surface of the mounting table 1 with the inclination angle θ.
And fitted into the mounting groove 8 formed with
Bearings 9 provided on the upper and lower portions of the back of the mounting table 1
a, 9b rotatably held. The upper end and the lower end of the shaft portion 4 protrude from the upper edge and the lower edge of the mounting table 1, and the lower end is guided into a casing 10 for a driving mechanism attached to a lower portion of the mounting table 1, and is driven. It is connected to a drive shaft of a servo motor 11 that constitutes the mechanism 3. In addition, since the apparatus of this embodiment is for a left-bound booklet, the inclination angle θ of the shaft portion 4 is an inclination angle that rises to the right toward the front surface of the mounting table 1; In this case, the inclination angle θ of the shaft portion 4 is an inclination angle that rises to the left toward the front surface of the mounting table 1.

The arm portion 5 is formed integrally with the shaft portion 4 and extends from the upper end of the shaft portion 4 toward the side of the mounting table 1. The magnet holder 6 is formed of a plate-like member vertically provided at the tip of the arm 5.
The magnet holder 6 is provided with a flexible member (for example, a flexible metal material) so that the permanent magnet 7 can be appropriately attracted to the iron piece at the upper end of each sheet regardless of the thickness of the booklet placed on the placing table 1. It is preferable to use a thin plate or a plastic plate. FIG. 7 shows that the permanent magnet 7 is appropriately attracted to the iron piece S attached to the upper end of the sheet a even in the case of a thick booklet by bending such a flexible magnet holder 6 in the longitudinal direction. It shows the state where it is. It is preferable that the permanent magnet 7 fixed to the lower part of the magnet holder 6 does not have an excessively large magnetic strength in order to prevent the iron pieces of a plurality of sheets of the booklet from being attracted at once. In order to use the permanent magnets 7 whose magnetic strength is not excessively large as described above to securely hold the iron piece of the sheet even during the turning of the turning arm 2, the permanent magnet 7 has a sufficient contact area with the iron piece. The permanent magnet 7 is most preferably a plate-like rubber magnet from such a viewpoint.

The drive mechanism 3 sets the shaft 4 at 180 °
It has a mechanism for rotating forward and backward at an excessive rotation angle, and in this embodiment, a servo motor 11 is provided as the drive mechanism 3,
Only the servo motor 11 rotates the shaft portion 4 forward and backward at a rotation angle exceeding 180 °. This servo motor 11 is controlled by a pulse control device 12, and for example, every time the foot switch 13 shown in the figure is operated once, the shaft part 4 is rotated forward and reverse at a rotation angle exceeding 180 °, ie, from the state shown in FIG. Shaft part 4 with a rotation angle of more than 180 °
(Therefore, the turning arm 2) is rotated forward and then the shaft portion 4 (and thus the rotating arm 2) is rotated in the reverse direction to perform a series of normal and reverse rotations for returning to the state of FIG. The drive mechanism 3 may be, for example, a type in which the shaft portion is rotated forward and backward by only the servo motor as in the present embodiment. Only the rotation operation of rotating the shaft portion 4 at an angle) is performed by the motor, and the reverse rotation of the shaft portion 4 (the rotation operation of returning from the state where the rotation is more than 180 ° forward to the state of FIG. 1) is
A return coil spring or the like that urges the shaft portion 4 in the reverse rotation direction may be used.

Next, a method of using the device of the present invention will be described. As shown in FIG. 8, in the booklet A to which the device of the present invention is to be used, an iron piece or an iron foil S (hereinafter, iron piece S will be described as an example) is fixed to the upper end of the front surface of each sheet a. You.
In addition, the booklet A that can be used includes general music scores or sheets bound with sheets made of paper or plastic, and binding books such as magazines. In order to easily attach the iron piece S, for example, FIG. 9 bag-shaped transparent as shown in a plastic sheet a ₁ in (so-called clear file or clear holder) in putting sheet a ₂ that sheet or copy it constitutes a music and books, etc., such plastic sheet a ₁ It is preferable to use a sheet in which a plurality of sheets are bound or a sheet in which these sheets are bound in a file holder.
Therefore, in the booklet to be used for the device of the present invention,
Such like a plastic sheet a ₁ multiple sheets stapled also included.

In using the apparatus of the present invention, first, the booklet A in which the first page to be automatically turned is opened is placed on the placing table 1. In this state, as shown in FIG. 7, the magnet holder 6 at the tip of the turning arm 2 is located on the sheet a of the double-page spread, and the permanent magnet 7 attracts the iron piece S of the sheet a. In this state, the foot switch 13 is operated once, and the drive mechanism 3 (the servomotor 11 and the pulse control device 12 in this embodiment) rotates the shaft 4 of the revolving arm 2 in the forward and reverse directions. 5 is turned from the position indicated by the solid line in FIG. 1 to the position indicated by the imaginary line, and then is turned back to the position indicated by the solid line.
The engagement relationship between the permanent magnet 7 and the sheet a during the turning operation of the turning arm 2 will be described with reference to FIG. In FIG. 6, →→→→ indicates the turning position of the turning arm 2 in the normal rotation direction in order, and the enlarged view in the circle at each position indicates the state of adsorption of the permanent magnet 7 to the iron piece S on the sheet side by the sheet a. 2 shows a state viewed from the front of the camera.

First, "" in FIG. 6 indicates the turning start position of the turning arm 2, and the permanent magnet 7 of the turning arm 2 is in the state of FIG. 7 with respect to the iron piece S of the sheet a. When the foot switch 13 is operated once in this state, the turning operation of the turning arm 2 is started. Here, since the tilt angle θ is given to the shaft portion 4 of the turning arm 2 with respect to the vertical direction of the mounting table 1, the permanent magnet 7 gradually rises above the iron piece S immediately after the turning arm 2 starts to turn. To be displaced.
"" In FIG. 6 shows a state in which the turning arm 2 has turned about 1/4 of the turning process. At this stage, it is attempted to displace the permanent magnet 7 upward with respect to the iron piece S by the inclination angle θ. Since the attracting force of the permanent magnet 7 to the iron piece S is superior to the force of the permanent magnet 7, the attracting state of the permanent magnet 7 to the iron piece S is not so different from that at the start of the turning operation of "".

When the turning arm 2 further turns from the position "", the force for displacing the permanent magnet 7 upward with respect to the iron piece S overcomes the attraction force of the permanent magnet 7 to the iron piece S. The permanent magnet 7 starts to be displaced upward with respect to the iron piece S. "" In FIG. 6 indicates this state. When the turning of the turning arm 2 further proceeds and reaches the position "", the permanent magnet 7 is slightly displaced upward until the iron piece S is adsorbed at the lower end thereof. S, and finally the turning end position of "" (the turning angle 180 from the turning start position of "").
(Exceeding °). Immediately after the position "", the sheet a is released from the restraint by the permanent magnet 7, and the turning of the sheet a is completed.

After the swing arm 2 reaches the swing end position of "", the reverse rotation operation of the swing arm 2 by the servo motor 11 controlled by the pulse control device 12 is started, and finally, the swing arm 2 becomes "". By returning to the position, the operation of the turning arm 2 by one operation of the foot switch 13 ends. Therefore, by repeating the operation of the foot switch 13 and the turning operation of the turning arm 2 by this, each sheet a of the booklet A can be automatically turned sequentially. Further, as the drive mechanism 3, for example, forward rotation of the shaft portion 4 (→→→
Only the turning operation of →) is performed by the motor, and the shaft 4
In the case of a system in which a reverse coil spring is used for the reverse rotation of the motor, when the turning arm 2 reaches the turning end position of "", for example, a limit switch is operated and the driving of the motor is stopped. Is driven by a coil spring that urges the shaft portion 4 to rotate in the reverse direction.
The swing arm 2 returns to the position "".

[0016]

According to the instrument of the present invention described above, the structure of the apparatus is simple, and the sheets of the booklet can be turned one after another without using hands.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the device of the present invention.

FIG. 2 is a side view of the device shown in FIG.

FIG. 3 is a partially enlarged view of a cross section taken along line III-III of FIG. 2;

FIG. 4 is a rear view of the magnet holder of the device shown in FIG. 1;

5 is a side view of the magnet holder of the device shown in FIG.

FIG. 6 is an explanatory view showing an engagement relationship between a permanent magnet and a sheet-side iron piece of the device shown in FIG. 1 according to a turning process of a turning arm.

FIG. 7 is a side view partially showing an engagement state between the swing arm and a seat at a swing start end position of the swing arm in the device shown in FIG. 1;

FIG. 8 is an explanatory view showing an example of a booklet in which the device of the present invention should be used.

FIG. 9 is an explanatory view showing an example of a sheet constituting a booklet in which the device of the present invention is to be used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mounting table, 2 ... Revolving arm, 3 ... Drive mechanism, 4 ... Shaft part, 5 ... Arm part, 6 ... Magnet holder, 7 ... Permanent magnet, 8 ... Mounting groove, 9a, 9b ... Bearing, 10 ... Casing , 11: servo motor, 12: pulse control device, 13
... foot switch, 100 ... overhang, a ... seat,
S: iron piece, a ₁ … plastic sheet, a ₂ … sheet

Claims (4)

[Claims] 1. An inclined mounting table (1) for mounting a booklet on which a sheet made of paper or plastic is bound in a state of leaning against a front surface, and a sheet turning attached to the mounting table (1). And a drive mechanism (3) for driving the swivel arm (2), wherein the swivel arm (2) is mounted on the mounting table at a substantially central position in the width direction of the mounting table. A shaft portion (4) rotatably held along a direction, the lower end of which is rotatably driven by being connected to a driving portion of the driving mechanism (3), and the shaft portion (4) protruding from an upper edge of the mounting table (1). An arm (5) coupled to the upper end of the shaft (4), a magnet holder (6) attached to the tip of the arm (5), and a mounting table front face on the magnet holder (6) And a permanent magnet (7) fixed so as to face the The shaft portion (4) has an inclined angle θ with respect to the mounting table vertically, the drive mechanism (3) is 180 ° to the shaft portion (4)
A permanent magnet (7) constituting a revolving arm (2) having a mechanism for rotating forward and backward at an extremely large rotation angle is attached to the upper end of each sheet of a booklet placed on the placing table (1). Swivel arm (2) adsorbed on iron piece or iron foil
A music stand or a reading stand device, wherein each of the sheets is automatically turned by the turning motion of the music stand. 2. The inclination angle θ of the shaft part (4) constituting the revolving arm (2) with respect to the mounting table vertical direction is 3 to 15 °.
The music stand or the reading stand device according to claim 1, wherein: 3. The instrument for a music stand or a reading stand according to claim 1, wherein the permanent magnet (7) constituting the pivot arm (2) is a rubber magnet. 4. In the case of an instrument for a left binding booklet, the inclination angle θ of the shaft portion (4) with respect to the vertical direction of the mounting table is an inclination angle that rises to the right toward the front surface of the mounting table (1). In the case of a right-binding booklet, the shaft portion (4)
The music stand or the reading stand according to claim 1, 2 or 3, wherein the inclination angle θ with respect to the mounting table vertical direction is an inclination angle that rises leftward toward the front surface of the mounting table (1). Appliances.