JP7275964B2 - Information display system and stand - Google Patents

Description

The present invention relates to information display systems and stands.

A support device (stand) is known that raises and lowers a heavy object to a desired height.

For example, Patent Literature 1 discloses a structure in which the inner pipe can be easily moved up and down and locked with one hand for the purpose of simplifying the operability of locking and unlocking.

In conventional stand lifting devices, manual lifting devices have a problem that it is difficult to easily perform the unlocking operation for vertical movement and the locking operation after lifting, and the work is time-consuming. In addition, in the case of an electric lifting device, it is possible for one person to easily perform the lifting operation, but the weight of the stand increases. There was a problem that it was necessary to widen the foot width, and the stand was larger than necessary. Furthermore, since the cost of the stand is high, there was a problem that the hurdle of introduction became high for customers from the viewpoint of cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information display system capable of adjusting the height of an information display device.

The technology disclosed is an information display system including an information display device and a stand that holds the information display device, wherein the stand includes a holding member that holds the information display device and a movable holding member. a support force generator fixed to the fixing member that applies an upward supporting force to the holding member; and a frictional force fixed to the fixing member that generates a frictional force to the holding member. and a generating unit, wherein the force applied between the holding member and the frictional force generating unit generated by the load of the information display device and the supporting force is generated by the holding member generated by the frictional force generating unit. larger than the maximum static frictional force between the stand and the frictional force generator, the stand includes a fixing portion for fixing the holding member, the fixing portion includes a hole provided in the fixing member and the holding member. and an unlocking mechanism that releases the protrusion fitted in the hole from the hole and reduces the frictional force generated by the frictional force generating unit. is.

According to the disclosed information display system, the height of the information display device can be adjusted.

1 is a perspective view of an information display system according to this embodiment; FIG. 1 is a side view of the information display system of this embodiment; FIG. 1 is a perspective view of an information display device of this embodiment; FIG. 1 is a front view of an information display device of this embodiment; FIG. FIG. 2 is a side view of the information display device of the embodiment; FIG. 2 is a perspective view of the stand of the information display system of the embodiment; The figure explaining the frictional force production|generation part of the information display system of this embodiment. The figure explaining the frictional force production|generation part of the information display system of this embodiment. The figure explaining the lock mechanism of the information display system of this embodiment. 4A and 4B are views for explaining the operation of the lock mechanism of the information display system according to the embodiment; FIG. 4A and 4B are views for explaining the operation of the lock mechanism of the information display system according to the embodiment; FIG.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated with reference to drawings. In the present specification and drawings, constituent elements having substantially the same functional configuration are denoted by the same reference numerals, and overlapping descriptions are omitted. Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the drawings. In each drawing, the same components are denoted by the same reference numerals, and redundant description may be omitted.

<Configuration of information display system>
[Information display system 1]
FIG. 1 is a perspective view of an information display system 1 of this embodiment. FIG. 2 is a side view of the information display system 1 of this embodiment.

The information display system 1 of this embodiment includes an information display device 100 and a stand 200 .

[Information display device 100]
FIG. 3 is a perspective view of the information display device 100 of this embodiment. FIG. 4 is a front view of the information display device 100 of this embodiment. FIG. 5 is a side view of the information display device 100 of this embodiment.

The information display device 100 displays a screen of a PC (Personal Computer) or the like. In addition, by using a dedicated pen-type input device 150, characters and graphics can be freely written on the display surface 110. FIG. One of the features of the information display device 100 of this embodiment is that it is thin as shown in FIGS. By designing the information display device 100 to be thin and light in this way, it is possible to create a display product excellent in portability even when using a large-inch display. As shown in FIG. 5, another feature of the information display device 100 of this embodiment is that the rear surface is completely flat. Therefore, for example, the information display device 100 can be laid flat on a desk, and a plurality of people can have a discussion around the information display device 100 . In addition, the information display device 100 can handle input with a plurality of pen-type input devices 150 so that a plurality of people can write simultaneously. Further, both the main body of the information display device 100 and the pen-type input device 150 are dustproof and waterproof so that the information display device 100 can be used outdoors.

[Stand 200]
FIG. 6 is a perspective view of the stand 200 of the information display system 1 of this embodiment.

The stand 200 includes movable frames 211 and 212, fixed frames 221 and 222, shafts 231 and 232, constant force springs 241 and 242, frictional force generators 251 and 252, a pedal 260, a pedestal 280, Prepare. If there is no particular need to distinguish between the movable frames 211 and 212, the fixed frames 221 and 222, the shafts 231 and 232, the constant force springs 241 and 242, and the friction force generators 251 and 252, They are sometimes called the movable frame 210, the fixed frame 220, the shaft 230, the constant force spring 240, and the frictional force generator 250, respectively.

[Movable frame 210]
The movable frame 210 holds the information display device 100 and is movable in the longitudinal direction of the fixed frame 220 . The method of holding the information display device 100 by the movable frame 210 is not particularly limited. For example, a member for mounting the information display device 100 or a member for suspending the information display device 100 may be provided on the movable frame 210 . Alternatively, the information display device 100 may be screwed to the movable frame 210 . Furthermore, the information display device 100 may be fixed to the movable frame 210 using an adhesive member (adhesive, adhesive tape, etc.).

Also, the movable frame 210 is provided with a part of a locking mechanism, which will be described later.

[Fixed frame 220]
Fixed frame 220 holds movable frame 210 movably in the longitudinal direction of fixed frame 220 . In order to make the movable frame 210 movable with respect to the fixed frame 220, the fixed frame 220 is provided with a frame member (not shown) and the movable frame 210 is passed between the frames. Also, the constant force spring 240 and the frictional force generator 250 are held by a holding member (not shown). The fixed frame 220 is hollow inside. A shaft 230 , which will be described later, is inserted inside the fixed frame 220 . Fixed frame 220 holds shaft 230 so that it can move longitudinally inside fixed frame 220 .

A plurality of slits 225 are formed in the fixed frame 220 at intervals. The slit 225 constitutes a part of a locking mechanism, which will be described later.

[Shaft 230]
The shaft 230 is inserted inside the fixed frame 220 . A plurality of slits 235 are formed in the side of the shaft 230 . The slit 235 constitutes a part of a locking mechanism, which will be described later. One end of shaft 230 is also provided with a conical member 237 (FIG. 8). The conical member 237 is formed as a cone that widens as its tip extends outward. The shaft 230 side of the conical member 237 is inserted into a through hole 258 of the frictional force generator 250, which will be described later. The other end of shaft 230 is connected to pedal 260 . Shaft 230 is biased by a spring or the like so as to return to a prescribed position when not pushed downward by pedal 260 . In the shaft 230 of the present embodiment, the prescribed position is a position (FIG. 10A) where a locking mechanism, which will be described later, is in a locked state. That is, when the pedal 260 is not stepped on, the shaft 230 is in a position where the lock mechanism is locked.

[Constant force spring 240]
The constant load spring 240 is a spring that generates a constant load within a specified spring pull-out range. The constant force spring 240 is fixed to the fixed frame 220 by a fixing member (not shown). A spring 245 of the constant force spring 240 is fixed to the lower end of the movable frame 210 (see FIG. 9). The constant force spring 240 applies an upward support force to the movable frame 210 .

The constant force spring 240 allows the information display device 100 to be moved with a light force. Further, even when the information display device 100 (movable frame 210) is in a movable state, the information display device 100 (movable frame 210) does not move abruptly. That is, the supporting force of the constant force spring 240 is adjusted so that the information display device 100 moves gently even when the lock mechanism (to be described later) is unlocked and the information display device 100 is released. It should be noted that a supporting force adjusting means for adjusting the supporting force according to the information display device 100 on which it is placed may be provided.

For example, a case where the weight of the information display device 100 is 5 kg will be described. The load of the information display device 100 in that case is approximately 50 Newtons. Generally, the supporting force of the constant force spring 240 is chosen to be equal to the load of interest. In the information display system 1 of this embodiment, the supporting force of the constant force spring 240 is set to approximately 30 Newtons.

Note that the constant force spring 240 is an example of a supporting force generator.

[Friction force generator 250]
FIG. 7 is a top view of the vicinity of the frictional force generator 250 of the information display system 1 of this embodiment. Note that the movable frame 210 is shown in a cross-sectional view. FIG. 8 is a perspective view of the vicinity of the frictional force generator 250 of the information display system 1 of this embodiment.

The frictional force generator 250 includes pressing members 253 and 254 , sponges 255 and 256 and a pivot member 257 . The pressing member 253 and the pressing member 254 of the frictional force generating section 250 can sandwich the movable frame 210 . Each of the pressing member 253 and the pressing member 254 of the frictional force generating section 250 is supported so as to rotate about the pivot member 257 in the direction in which the movable frame 210 is sandwiched. The pivot member 257 has a torsion spring, and the torsion spring applies a load to the pressing members 253 and 254 in the closing direction. By sandwiching the movable frame 210 with the pressing members 253 and 254 via the sponges 255 and 256 in this way, a frictional force is generated on the contact surfaces of the sponges 255 and 256 with respect to the movable frame 210 . That is, the frictional force generator 250 generates static frictional force between the movable frame 210 and the frictional force generator 250 . The frictional force can suppress the movement of the movable frame 210 .

The information display device 100 of this embodiment may be used, for example, as an electronic blackboard. When used as an electronic blackboard, it is assumed that the user performs writing operations on the information display device 100 . In general, a force of about 5 Newtons is applied to the information display device 100 during writing. If there is no holding force enough to suppress this force, the screen shakes during writing, giving the user the impression that writing is difficult. In the information display system 1 of the present embodiment, the frictional force generated by the frictional force generating section 250 is set to be greater than the force applied to the information display device 100 by the user during writing. As a result, it is possible to prevent writing sway.

Further, the force generated between the movable frame 210 and the frictional force generator 250 due to the load of the information display device 100 by the frictional force generator 250 and the supporting force of the constant force spring 240 is the movable frame 210 and the frictional force generator greater than the maximum static frictional force with the portion 250 . Therefore, the information display device 100 can move up or down autonomously even if the frictional force of the frictional force generating section 250 acts on the movable frame 210 when the lock mechanism described later is unlocked. Moving. For example, when the supporting force of the constant force spring 240 is smaller than the load of the information display device 100, the information display device 100 moves downward. Further, for example, when the supporting force of the constant load spring 240 is larger than the load of the information display device 100, the information display device 100 moves upward.

For example, consider the case where the weight of the information display device 100 described above is 5 kg and the supporting force of the constant force spring 240 is set to approximately 30 Newtons. Since a force of about 5 Newtons is generally applied to the information display device 100 during writing, the maximum static frictional force of the frictional force generator 250 is set to about 10 to 20 Newtons. At this time, the force generated between the movable frame 210 and the frictional force generating unit 250 due to the load of the information display device 100 by the frictional force generating unit 250 and the supporting force of the constant force spring 240 causes friction between the movable frame 210 and the frictional force generating unit 250. It is adjusted so that it is greater than the maximum static frictional force with the force generating section 250 .

Further, a through hole 258 is formed in the frictional force generating portion 250 . The conical member 237 of the shaft 230 pushes the through-hole 258 open, thereby pushing the pressing member 253 and the pressing member 254 open. The conical member 237 pushes apart the pressing member 253 and the pressing member 254 to release the frictional force generated by the sponges 255 and 256 . By releasing the frictional force, the information display device 100 can be moved smoothly.

[pedal 260]
Pedal 260 is a member for releasing a lock mechanism, which will be described later. Pedal 260 is connected to the other end of shaft 230 . When the pedal 260 is pushed downward with a foot or the like, the shaft 230 moves downward accordingly. As a result, the lock mechanism is unlocked and the frictional force generated by the frictional force generator 250 is released.

[Pedestal 280]
The pedestal portion 280 is a member that holds the fixed frame 220 (221, 222). The base 280 has casters 281, 282, 283, 284 to make the entire frame 200 movable. In addition, fixing members 287 and 288 are provided to fix the fixed frame 220 (221 and 222) to the base portion 280. As shown in FIG. The fixing members 287 and 288 fix the fixed frame 220 (221 and 222) obliquely to the ground.

<Lock Mechanism>
FIG. 9 is a diagram for explaining the lock mechanism of the information display system 1 of this embodiment. FIG. 9 shows a state in which the movable frame 210 is locked by the locking mechanism. In addition, in FIG. 9, the movable frame 210 and the fixed frame 220 are shown in a sectional view.

A lock pin 217 pressed by a spring 216 is provided at the lower end of the movable frame 210 . Spring 216 and lock pin 217 form part of the locking mechanism.

A combination of the spring 216, lock pin 217, slit 225, and slit 235 may be called a lock mechanism.

The lock pin 217 is inserted into the slit 225 of the fixed frame 220 and the slit 235 of the shaft 230 when the movable frame 210 is locked.

10 and 11 are diagrams for explaining the operation of the lock mechanism of the information display system 1 of this embodiment. 10 and 11, the movable frame 210, fixed frame 220, and shaft 230 are shown in sectional views.

FIG. 10A shows a state locked by the lock mechanism (locked state). In the locked state, lock pin 217 fits into slit 225 . The lock pin 217 has a tapered tip portion 217a that is an inclined surface at the tip. The lock pin 217 also has a cylindrical portion 217b having a cylindrical side surface. In the locked state, the cylindrical portion 217b of the lock pin 217 contacts the end surface of the slit 225 of the fixed frame 220 at the circle A in FIG. 11A, thereby preventing vertical movement. In this manner, a portion of the lock pin 217 other than the tapered distal end portion 217 a , here, the cylindrical portion 217 b , is in contact with the fixed frame 220 . Therefore, the movable frame 210 does not move relative to the fixed frame 220 .

When the information display device 100 of the present embodiment is used as an electronic whiteboard, it is assumed that the user will write on the information display device 100 . There are a certain number of users who hold the side of the information display device 100 when writing on the information display device 100 . In that case, it is difficult for the frictional force generator 250 described above to prevent the information display device 100 from moving due to the load applied when writing with the side of the information display device 100 . By using the lock mechanism of the present embodiment, the information display device 100 can be securely locked and prevented from moving.

Furthermore, as described above, in the information display system 1 of the present embodiment, the frictional force generated by the frictional force generating section 250 can prevent the shaking of writing. In locking by the lock mechanism, rattling occurs due to the gap when the lock pin 217 is inserted into the slit 225, but the movable frame 210 is held by the frictional force generator 250 to prevent the rattling. can do.

A case where the pedal 260 is stepped on in the information display system 1 of the present embodiment from the locked state of the lock mechanism to unlock the lock mechanism will be described. From this locked state, the unlocking operation is started by pushing down the shaft 230 as shown in FIGS. 10(B) to 10(D). This unlocking operation can be realized by depressing the pedal 260 . As described above, by stepping on the pedal 260, the frictional force of the frictional force generating section 250 can also be released or reduced. That is, the unlocking of the lock mechanism and the canceling of the frictional force of the frictional force generator 250 can be achieved by the same operation of stepping on the pedal 260 . Shaft 230 and pedal 260 are an example of an unlocking mechanism.

FIG. 10B shows a state in which pedal 260 is stepped on and shaft 230 moves in the direction of arrow B1. 10(B), the end surface of the slit 235 of the shaft 230 contacts the tip portion 217a. In this case, since the tip portion 217a is an inclined surface, the lock pin 217 retreats (moves) in the direction of the arrow B2.

10(C), when the pedal 260 is further stepped on and the shaft 230 moves in the direction of the arrow C1, the lock pin 217 is completely removed from the slit 235. In FIG. In this state, the lock pin 217 moves in the direction of arrow C2 until it contacts the end face (circle C) of the slit 225 of the fixed frame 220, and the tip 217a of the lock pin 217 comes into contact with the slit 235.

FIG. 10D is a diagram when the movable frame 210 is moved in the direction of arrow D1. For example, assume that the user holds the edge of the information display device 100 and moves it downward in order to lower the height of the information display device 100 . In that case, the tip 217a of the lock pin 217 comes into contact with the end surface of the slit 225 of the fixed frame 220 (see circle D). In this case, since the tip portion 217a is an inclined surface, the lock pin 217 retreats (moves) in the direction of the arrow D2. In order to increase the height of the information display device 100, the information display device 100 may be held at an end and moved upward (in the direction opposite to the arrow D1).

FIG. 11(A) is a diagram showing a state in which the movable frame 210 is further moved from the state in FIG. 10(D). In that case, the lock pin 217 is pulled out of the slit 225 of the fixed frame 220 . In this case, lock pin 217 is completely removed from slit 225 of fixed frame 220, and movable frame 210 (information display device 100) can be freely moved in the direction of arrow E1.

Here, when the user moves the information display device 100 , the lock pin 217 enters the slit 225 when the lock pin 217 passes through the slit 225 of the fixed frame 220 . As a result, the user can know the position of the slit 225 of the fixed frame 220 , that is, the position where the lock mechanism is locked by the click sound and the feeling that the tip of the lock pin 217 hits the surface of the shaft 230 . In this way, it is possible to know a rough position at which locking is possible without checking the positions of the spaced slits 225 without bothering to look.

When the user removes the foot from the pedal 260 at the position of the slit 225 of the fixed frame 220, that is, at the position where the lock mechanism locks, the state shown in FIG. 10(A) is obtained. Thereby, the information display device 100 (movable frame 210) is locked by the lock mechanism. Furthermore, it is fixed by the frictional force generated by the frictional force generator 250 .

Here, the case where the foot is removed from the pedal 260 in the state of FIG. 11(A) will be considered. When the foot is removed from the pedal 260 in the state of FIG. 11(A), the shaft 230 is in the state of FIG. 10(A). In this state, since it is not locked by the lock mechanism, the user can move the information display device 100 (movable frame 210) to the slit 225 either above or below the portion with which the lock pin 217 is in contact. . Moreover, when it moves to the slit 225 , the lock pin 217 is inserted into the slit 225 and the slit 235 to be locked. Also, even if the user releases the hand in the state of FIG. It's becoming Therefore, the information display device 100 gently and autonomously moves to the slit 225 either above or below the portion with which the lock pin 217 is in contact. Then, when it moves to the slit 225 , the lock pin 217 is inserted into the slit 225 and the slit 235 to be locked. As described above, in the information display system 1, even if the foot is removed from the pedal 260 at a position other than the locked state by the lock mechanism, the information display device 100 automatically moves to the locked state by the lock mechanism. locked.

Note that the lock mechanism is an example of the fixing portion. Also, the slit 225 of the fixed frame 220 is an example of the hole. Lock pin 217 of movable frame 210 is an example of a protrusion.

<Action/effect>
According to the information display system 1 of this embodiment, the height of the information display device 100 can be adjusted by the stand 200 including the movable frame 210 , the fixed frame 220 , the constant force spring 240 and the frictional force generator 250 .

According to the information display system 1 of this embodiment, when the information display device 100 is moved up and down, the user can grasp the position where the lock mechanism is in the locked state. Further, even if the locking operation is performed at a position other than the locked state of the lock mechanism, the information display device 100 automatically moves to the locked state of the lock mechanism.

Further, according to the information display system 1 of the present embodiment, the user can operate the pedal 260 with one foot and move the information display device 100 up and down while supporting it with both hands. A later locking operation can be easily realized. As a result, even one person can easily move the information display device 100 up and down.

Furthermore, according to the information display system 1 of the present embodiment, by holding the information display device 100 with the lock mechanism and the frictional force generation unit, the information display device 100 can be reliably fixed and the shaking of the writing can be prevented. can be done.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and within the scope of the embodiments of the present invention described in the claims, Various modifications and changes are possible.

1 Information Display System 100 Information Display Device 200 Stand 210, 211, 212 Movable Frame 216 Spring 217 Lock Pin 220, 221, 222 Fixed Frame 225 Slit 230, 231, 232 Shaft 235 Slit 240, 241, 242 Constant Force Spring 250, 251 , 252 frictional force generator 260 pedal

Japanese Patent No. 3892238

Claims (3)

An information display system comprising an information display device and a stand holding the information display device,
The stand is
a holding member that holds the information display device;
a fixing member that movably holds the holding member;
a supporting force generator fixed to the fixing member that applies an upward supporting force to the holding member;
a frictional force generator fixed to the fixed member that generates a frictional force on the holding member;
The force acting between the holding member and the frictional force generating section generated by the load of the information display device and the supporting force is the force generated by the frictional force generating section between the holding member and the frictional force generating section. greater than the maximum static friction force between
The stand includes a fixing portion that fixes the holding member,
The fixing portion includes a hole provided in the fixing member and a projection provided in the holding member,
It further comprises an unlocking mechanism that releases the protrusion fitted in the hole from the hole and reduces the frictional force generated by the frictional force generating unit.
Information display system. 2. The information display system according to claim 1 , wherein said supporting force generator comprises a constant force spring. A stand for holding an information display device,
a holding member that holds the information display device;
a fixing member that movably holds the holding member;
a supporting force generator fixed to the fixing member that applies an upward supporting force to the holding member;
a frictional force generator fixed to the fixed member for generating a frictional force on the holding member;
a fixing part that fixes the holding member,
The fixing portion includes a hole provided in the fixing member and a projection provided in the holding member,
An unlocking mechanism for releasing the protrusion fitted in the hole from the hole and reducing the frictional force generated by the frictional force generating unit is provided.
stand.

Images