JPH0132893Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is designed to adjust the height and angle of the lectern body to make it easier to read books depending on the reader's posture, whether standing, sitting, or even lying down. Regarding a lectern that can be freely adjusted.

Conventionally, a lectern has generally been placed on a desk or the like.

In addition, on rare occasions, there was a lectern that allowed the reader to read while lying down. However, conventional lecterns, which allow readers to read while lying down, hold the book in place with rods provided at the four corners of the lectern body, which are loaded with torsion springs. It is difficult to adjust the mounting height and angle of the stand to match the focus of the reader's eyes, making it cumbersome to operate, and reading for long periods of time can easily tire the eyes, and the inability to make fine adjustments makes it difficult to maintain an unreasonable posture. I got tired easily because of the amount of water I was taking.

Furthermore, the height and angle of the lectern body can be freely adjusted to suit the function of the reader, so that the book can be read easily depending on the reader's posture, whether standing, sitting, or even lying down. There was no lectern that was versatile enough to be adjustable.

This invention was made in view of the above points, and its purpose is to
Or even in a sitting position or even in a lying position,
To provide a lectern whose height and angle can be freely adjusted so that a book can be read easily according to the posture of a reader.

Hereinafter, details of the present invention will be explained according to an embodiment shown in the drawings.

The present invention basically consists of a supporting vertical rod portion 2 that is telescopically supported at the center of a pedestal 1;
A pivoting rod part 4 is provided to be able to pivot freely via an angle adjustment mechanism part 3, an angle adjustment mechanism part 5 is provided at the tip of the pivoting rod part 4, and an angle adjustment mechanism part 5 for the angle adjustment mechanism part 5 a connecting rod part 6 rotatably provided, and a pivoting connecting part 9 for attaching the lectern main body 7 to the tip of the connecting rod part 6 so as to be rotatable in the horizontal and vertical directions.
and upper holding means 8A provided on the upper and lower left and right sides of the lectern main body 7 to hold the book A.
and a lower holding means 8B.

The supporting vertical rod portion 2 includes, for example, a large-diameter fixed tube portion 1A erected at the center of the pedestal 1, and a medium-diameter first telescopic tube portion 10 telescopically inserted into the fixed tube portion 1A.
and a second telescopic tube portion 11 with a small diameter that is telescopically inserted into the first telescopic pipe portion 10, and a first telescopic pipe portion 10 with a medium diameter and a first telescopic pipe with respect to the fixed tube portion 1A. A second telescopic tube section 11 with a small diameter relative to the section 10
Expansion and contraction are performed by loosening and tightening fixing screws 13, 14, and 15 screwed into the fixing tube portion 11, respectively.

Further, the angle adjustment mechanism section 3 is attached to the upper end of the second telescopic tube section 11 by fitting the neck section 16A formed on the lower surface thereof, and the upper circumferential surface thereof has a neck section 16A formed on the lower surface thereof. In order to determine the attachment angle to the vertical rod part 2, several toothed parts 16a,
16b, 16c, 16d, and 16e formed thereon; a cross-section board 18 rotatably attached to the ratchet 16 using a shaft portion 17; and a board 18 having a U-shaped cross section; A case 19 attached using the part 17, and the case 19
The toothed portions 16a, 16b, 16
A stopper 2 is provided with an elastic bending piece 22A at its front end as a locking part that can be pressed against c and 16d.
2, and toothed portions 16a, 16 of the ratchet 16.
b, 16c, and 16e, and an L-shaped rotation regulating rod rotatably pivoted to the protruding piece 16f so as to restrict rotation of the riding plate 18. 16F, an engagement piece 16g formed on the side surface of the ratchet 16 to which the ride plate 18 can be freely engaged and detached, and an engagement piece 16g fixed to the upper surface of the case 19 into which the pivot rod 4 is inserted and held. It is formed from a holding cylinder 19A. Said pivoting rod part 4
is a weight 2 with a knurl 24A formed on its circumferential surface.
4 is fixed to the rear end and inserted into the holding cylinder 19A, and a large-diameter first telescopic tube 25 is inserted into the first telescopic tube 25, and a small-diameter second telescopic tube 26 is slidably inserted into the first telescopic tube 25. , a fixing screw 27 for inserting and screwing the first telescopic tube 25 into the holding cylinder 19A;
It is formed with a fixing screw 28 that telescopically screws the second telescopic tube 26 to the end.

The angle adjustment mechanism section 5 attached to the tip of the second telescopic tube 26 has a neck 29 inside the second telescopic tube 26.
It is attached to the second telescoping tube 26 by fitting a into the second telescopic tube 26, and there are several toothed parts 29 on the upper circumferential surface for determining the attachment angle with respect to the pivoting rod part 4.
b, 29c, 29d, 29e...29n, and the ratchet 29 is connected to the shaft 30.
A case 31 that is attached using a
1 by a shaft 32 and the shaft 3
By the force of the coiled spring 33, which is wound around 2, the bent portion 34A is moved to the toothed portions 29b, 29 of the ratchet 29.
c, 29d, 29e .
A connecting rod portion 6 inserted into the case 31 adjacent to
and an engagement groove 3 at its base end.
A projecting portion 35 having a diameter of 5A radially provided, and a shaft 36 is pivotally mounted in the case 31 so as to be able to rise and fall freely, and is energized and locked by a coil spring 38 wound around the shaft 36. Its bent upper end 37a as a section
is formed with a stopper 36 that restricts rotation of the connecting rod portion 6 by being inserted into the engagement groove 35A.

The connecting rod portion 6 is formed by inserting a bent portion 6a, which is bent at right angles at the tip thereof, into a hole _39A1 formed in a protruding portion 39A protruding from the rear surface of the case 39. The case 39 is adapted to rotate in the direction of arrow A around 6a. Moreover,
A coil spring 40 is wound around a pivot portion 41A installed in the case 39 in a direction orthogonal to the connecting rod portion 6.
The bolt 41B energized by
The lectern body 7 is connected to the lectern body 7 by inserting the arm mount _7C1 , which can be screwed into the lectern body 1A and tightened and fixed at an appropriate angle to the case 39, into and out of the lectern body 7. The portion 6 is attached to the case 39 so as to be able to rise and fall freely in the direction of arrow B (see FIG. 5).

Since the configuration is such that the arm mount 7C _{1 is inserted into the guide grooves 7A, 7A provided at the center of the back of the lectern main body 7, the arm mount 7C 1 is} removed from the guide grooves 7A, 7A and is not shown. By reinserting the side L-shaped supporting back material into the guide grooves 7A and 7A for support, the lectern main body 7 itself can be placed on a desk or the like and used independently from the stand. You can also do it.

The book stand main body 7 has a book A placement part 7B formed at a slightly more acute angle than a right angle in the lower part thereof, and is provided at the center of the back of the book stand main body 7 as an upper holding means 8A for the book A. The guide grooves 7A, 7A
The curved arm support part 7C inserted therein is biased by a spring so that it can freely rise and fall, and a presser plate 7E is attached to its tip, and the curved arm 7D made of an elastic flexible material is attached to the back of the lectern body 7. It is placed from the top to the front.

As a lower holding means 8B for holding down the lower margin of the book A, a pivot base 42A formed at a substantially right angle is inserted into holes 7B ₁ and 7B ₁ bored on the left and right upper surfaces of the mounting portion 7B. A presser rod 42 is provided at the lower part thereof and is formed by bending the portion exposed from the hole _7B1 at a substantially right angle to the pivot base 42A via a pivot fulcrum 42B; For spring biasing, it is formed of a torsion spring 43 whose one end is fixed to the pivot base 42A and the other end is fixed to the inside of the mounting section 7B. When the left and right pair of presser rods 42, 42 are not in use, they lie down against the elastic force of the torsion spring 43 on the front surface of the mounting portion 7B, and on the other hand, when in use, they are slightly raised to allow the torsion spring 43 The sliding fulcrum 42B formed at the border with the pivot base 42A pivots on the placing portion 7B, thereby pressing down on the margin of the book A. Reference numeral 44 denotes a rubber crown that is placed on the head of the presser rod 42. When the presser rod 42 is laid down on the front surface of the mounting section 7B, this rubber crown 44 comes into contact due to the friction, and on the other hand, during use. Book A
When pressed, the book A is elastically held down by the cushioning effect, thereby preventing damage to the book. 45 is a lighting fixture that can be attached as necessary.

One embodiment of the present invention has the above-mentioned configuration, and in order to place and hold the book A etc. on the lectern body 7, a placing portion 7 formed below the lectern body 7 is used.
First, place a book on B. From there, when the curved arm 7D, which is pivotally connected to the curved arm support part 7C and is biased by a spring to the position shown by the two-dot chain line in FIG. 13, is pushed down beyond the dead center of the spring, the curved arm 7D The upper center part of the book A is rapidly pivoted around the pivot point relative to the curved arm support part 7C, and is placed on the mounting section 7B using the presser plate 7E provided at the tip of the curved arm 7D. Being held down. In addition, the left and right presser rods 4 remain stationary by lying down and contacting the front surface of the mounting section 7B.
2, 42 to stand up, the presser rods 42, 42 are wound around the pivot bases 42A, 42A, and one end is placed inside the mounting portion 7B, and the other end is placed inside the pivot base 42A. , 42A, the presser rods 42, 42 are moved approximately from the pivot base 42A to the pivot base 42A.
As shown in FIG. 13, the left and right portions of the margin of the book are held by rapidly pivoting about the pivot fulcrum 42B, which is formed at a substantially right angle with a plane displacement of 90 degrees.

When reading book A while sitting upright, as shown in FIG. The second telescopic tube section 11 is also contracted with respect to the section 10. Moreover, as shown in FIG.
After the rotation regulating rod 16F of the angle adjustment mechanism section 3 provided at the upper end of 0 is erected, this rotation regulating rod 16F is
A riding plate 18 rotated around the shaft portion 17 is brought into contact with the shaft portion 17 to restrict rotation. When the first telescopic tube 25 is held in the holding cylinder 19A and the case 19, which is in a horizontal state as shown in FIG. The elastic bent piece 22A of the stopper 22, which is energized at If it is rotated further, the elastic bending piece 22A will become approximately 45 degrees as shown in FIG.
is disengaged from the toothed portion 16d of the ratchet 16 by riding on the riding plate 18 which is rotatably restricted by the rotation regulating rod 16F, and at the same time, the pivoting rod portion 4 is moved for support. It can even be made substantially parallel to the vertical rod portion 2. In this case, if the rotation regulating rod 16F is suspended below the case 19 as shown in FIG. 11, the pivoting rod portion 4 can be made completely parallel to the supporting vertical rod portion 2.

Thereafter, the toothed portions 29b, 2 of the ratchet 29 of the angle adjustment mechanism section 5 provided at the tip of the second telescoping tube 26
9c, 29d...29n, by releasing the stopper 34 against which the bent portion 34A as a locking portion is pressed by the coiled spring 33 against the elastic force of the coiled spring 33, the engagement is released. Later, by rotating the case 31 of the angle adjustment mechanism 5 about the shaft 30 and setting the attachment position of the connecting rod 6 to the pivot rod 4 at an acute angle, the book A held on the lectern main body 7 can be placed on the seat. You can read it straight away. In this case, the lectern main body 7 is moved into the fifth
The mounting position of the lectern body 7 can be adjusted to the left or right by rotating in the direction of arrow A in the figure, or the pivot part 41A can be rotated in the direction of arrow A in the figure to adjust the mounting position of the lectern main body 7 to the left or right. By loosening the bolt 41B screwed into the pivot portion 41A and rotating the lectern body 7 in the direction of arrow B in FIG. You can adjust its mounting position by rotating it back and forth. In addition, a protruding portion 3 provided at the base end of the connecting rod portion 6 supporting the lectern body 7
Since the bent upper end 37a of the stopper 37 is engaged in the engagement groove 35A on the circumferential surface of the book 5, the connecting rod 6 will not rotate around the axis indiscriminately even when the weight of the book is applied.

Therefore, the reader can easily adjust the focal length to himself or herself, and reading for long periods of time will not cause eye strain, and since there is no need to take an unreasonable posture, the reader will not get tired.

Further, since the pivoting rod part 4, which is set parallel to the vertical support rod part 2, is attached via the angle adjustment mechanism part 3, it rotates around its horizontal axis with the vertical support rod part 2 as the center. You can also do it.

When reading Book A, etc. in a standing position or sitting on a high chair, etc., the handling is almost the same as in the sitting position as described above, but the support vertical rod part 2 is formed. The first telescopic tube section 10 is connected to the fixed tube section 1A.
The second telescoping pipe section 11 is extended by loosening and tightening the fixing screws 13, 14, 15, respectively, and the second telescoping pipe section 11 is extended with respect to the first telescoping pipe 25 forming the pivoting rod section 4 on the other side. Fixing the tube 26 with the screw 27,
The difference is that 28 is tightened and used in the extended state.

Moreover, the attachment angle of the pivoting rod 4 to the supporting vertical rod 2 can be adjusted by lifting the pivoting rod 4 relative to the supporting vertical rod 2 as described above.
Several tooth-shaped parts 16a, 16b, 16c, 16 are formed on the circumferential surface of the ratchet 16 by the elastic bent piece 22A of the stopper 22, which is biased by the coil spring 21 in the ratchet 9.
Since d and 16e slide, the pivoting rod 4 can be set at an angle of approximately 45 degrees as shown in FIG. Further rotation allows the pivoting rod 4 to be set on the supporting vertical rod 2 at a larger angle. Then, if the pivoting rod part 4 is further rotated with respect to the supporting vertical rod part 2, the stopper 2 as a locking part
When the second elastic bending piece 22A rides on the riding plate 18 whose rotation is restricted by the rotation regulating rod 16F, the engagement with the toothed portion 16d of the ratchet 16 is released, and at the same time the elastic bending piece 22A is the board 1
8 is held by its elastic force.

Therefore, as shown in FIG.
The riding plate 18 which is elastically held at A is attached to the shaft portion 1
7 in the opposite direction together with the case 19 until it engages with the engagement shoulder 16g formed on the side surface of the ratchet 16.

and the engagement shoulder 16 on the side of the ratchet 16.
If the pivoting rod part 4 is pushed down even after the riding board 18 is engaged with the riding board 18, the elastic bending piece 22A of the stopper 22 that has been riding on the riding board 18 will be removed from the riding board 18, as shown in FIG. In this way, the pivoting rod portion 4 can be returned to its original horizontal state.

Furthermore, when reading in a lying position, first push up the stopper 34 of the angle adjustment mechanism section 5 attached to the pivoting rod section 4 against the bias of the coil spring 33. As for the teeth 29b, 29c, 2 of the bent portion 34A,
By releasing the engagement of 9d, 29e...29n, the case 31 is rotated about the shaft 30. Then, if you stop pushing up the stopper 34, the case 31
The bent portion 34A of the stopper 34 rotated together with the toothed portion 29 formed on the circumferential surface of the ratchet 29.
b, 29c, 29d, 29e, . . . , 29n, the case 31 can be adjusted to a desired angular position by engaging a desired one by the force of the coil spring 33. After lowering the angle adjustment mechanism 5 to the mounting position with respect to the pivot rod 4 in this manner, the stopper 37 of the angle adjustment mechanism 5 is pushed down against the elastic force of the coil spring 38 to connect. The bent upper end 37a is engaged with the engagement groove 35A provided radially on the upper surface of the tip of the rod portion 6.
If the engagement is released, the connecting rod portion 6 inserted into the case 31 can be rotated horizontally with respect to the axial direction. Therefore, after rotating the connecting rod portion 6 by a desired angle, for example 180 degrees, with respect to the case 31, the stopper 37 is stopped and the bent upper end 37a is rotated.
If the screw is inserted into the engagement groove 35A provided on the circumferential surface of the protrusion 35, the mounting position of the lectern main body 7 relative to the connecting rod portion 6 can be shifted from upward to downward as shown in FIG. By positioning the reader's head diagonally below the lectern body 7 in this manner, the reader can read while lying down.

To adjust the height relative to the lectern main body 7, as described above, the locking position of the elastic bending piece 22A of the stopper 22 with respect to the teeth 16a, 16b, 16c, 16d, etc. of the ratchet 16 of the angle adjustment mechanism 3 is adjusted. By changing this, the mounting height of the pivoting rod portion 4 relative to the supporting vertical rod portion 2 changes, so that the mounting height of the lectern main body 7 can be easily adjusted with a one-touch operation.

In this embodiment, although the case where a lectern was used as an example was explained, the present invention can be easily applied to a microphone stand or a music stand.

As mentioned above, the present invention allows the height and angle of the lectern to be adjusted depending on the reader's posture, whether the reader is standing, sitting, or even lying down. , rotate the two angle adjustment mechanisms in the vertical direction, rotate the connecting rod in the horizontal direction with respect to one of the angle adjustment mechanisms attached to the tip of the pivot rod, or The main body of the lectern attached to the tip of the pivoting rod part can be easily and precisely adjusted by rotating it vertically or horizontally. Therefore, the reader can maintain a constant focal length at all times, so the eyes do not get tired, and since the reader can adjust the posture correctly, the reader can read for a long time without getting tired.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a perspective view showing an example of the lectern that constitutes this embodiment, FIG. 3 is an enlarged sectional view showing the lectern when not in use, FIG. 4 is an enlarged sectional view when the lectern is in use, and FIG. 5 6 is a perspective view showing the rear attachment part of the lectern, FIG. 6 is an exploded perspective view showing the angle adjustment mechanism connecting the vertical support rod and the pivoting rod, and FIGS. 7 to 11. 12 is a sectional view showing the operating state of the angle adjustment mechanism, and FIG. 12 is a sectional view showing another angle adjustment mechanism that connects the pivoting rod and the connecting rod.
Figure 3 is a side view showing how the lectern is attached to the pivot rod when reading in a sitting or standing position, and Figure 14 is a side view showing how the lectern is attached to the pivot rod when reading in a sitting or standing position. FIG. 3 is a side view showing how the lectern is attached to the moving rod part. DESCRIPTION OF SYMBOLS 1... Pedestal, 2... Vertical support rod part, 3... Angle adjustment mechanism part, 4... Pivoting rod part, 5... Angle adjustment mechanism part, 6... Connection rod part, 7... Bookmark The stand body.

Claims (1)

[Scope of utility model registration request] A supporting vertical rod part that is extendable and retractable at the center of the pedestal, and a pivoting rod part that is rotatably attached to the rear end of the supporting vertical rod part via one angle adjustment mechanism part in a vertical direction. , a ratchet formed at the tip of the pivoting rod, a case rotatably fixed to the ratchet in a vertical direction, and a case that can be freely engaged with and disengaged from several teeth on the circumferential surface of the ratchet. one stopper attached to the case with the locking part biased by a spring;
A horizontally rotatable connecting rod portion having engagement grooves arranged radially and a protrusion inserted adjacent to the ratchet, and a spring having a locking portion that can be freely engaged with and detached from the engagement groove. another angle adjustment mechanism section configured with another stopper that is energized and attached to the case; an arm mount that is attached to the tip of the connecting rod section so as to be rotatable in horizontal and vertical directions; , and a lectern main body which can be attached by inserting the arm mount into a guide groove provided at the center of the back.