JP5912607B2 - Shock absorber for slide board - Google Patents

Description

  The present invention relates to a slide board such as an electronic blackboard or an interactive board that is used by moving so as to overlap a front surface of a blackboard installed on a wall surface, and in particular, shocks applied during the movement of the slideboard are buffered safely and reliably. The present invention relates to an impact shock absorber capable of

  Conventionally, writing boards such as blackboards and whiteboards are attached to the walls of classrooms, conference rooms, offices, and the like. In such facilities, in addition to analog writing boards such as blackboards, in recent years, display using digital blackboards such as electronic blackboards with various functions and interactive boards with projector screen functions, etc. The board is also used.

  Although these electronic blackboards and interactive boards are usually installed on a movable stand, they are dangerous if they fall down because they are about 1 meter in height or width and are heavy, so that their legs are in danger. Since it occupies a large installation area, it is difficult to store, move and install. Therefore, a solution has been devised in which the electronic blackboard or the like is movably attached to a writing board such as an existing blackboard or the like installed on the wall surface.

The rail members are arranged in parallel in the horizontal direction on the top and bottom of the blackboard, and rotation moving members such as wheels are provided at the upper and lower four corners of the frame body on which the electronic blackboard is arranged, which slides on the rail member. It can move smoothly. (See Patent Document 1)
The electronic blackboard or the like that is normally retracted to the end of the rail member is moved to the front of the blackboard and fixed at the time of use, and the blackboard can be used again after completion. It is retracted and fixed to the end. Thus, from the convenience of allowing existing blackboards and electronic blackboards to coexist in a space-efficient manner and selectively using them, the movement method of electronic blackboards is about to become widespread.

JP 2010-201807 A

However, this conventional braking device such as an electronic blackboard has some problems.
FIG. 6 shows a rotationally moving member 50 composed of wheels connected to a frame body to which a slide board such as an electronic blackboard is attached, and a rail member 51 on which the rotationally movable member 50 slides. The rubber stopper member 52 is fixed to the stop position, and the wheel 53 of the rotationally moving member 50 is applied to the stopper member 52 to stop the slide board.
Although the rubber stopper member 52 can surely stop the rotational movement member 50, the effect of absorbing the impact is low, and if the wheel 53 collides with this, the rotational movement member 50 and the slide board have a great impact. There was a risk of damage.

Therefore, in order to enhance the effect of absorbing the impact, a stopper unit 60 shown in FIG. 7 has been devised in place of the fixed rubber stopper member described above.
The stopper unit 60 includes a cushion member 61 made of rubber or the like at the tip, a housing 63 provided with one end of the compression spring 62 disposed after the cushion member 61, and the other end of the compression spring 62 abutting to move the housing 63. The support member 64 is freely supported and fixed to the rail member 51. When the wheel 53 of the rotationally moving member 50 hits the cushion member 61 of the stopper unit 60, the housing 63 is pushed and moves to the left in FIG. When the compression spring 62 is compressed, a force that biases the casing 63 to the right by the compression spring 62 is applied to the casing 63, thereby braking the rotationally moving member 50.
That is, since the urging force (repulsive force) that the compression spring 62 pushes back increases in proportion to the distance of the housing 63 that moves when the wheel 53 of the rotary moving member 50 hits the cushion member 61, the slide board vigorously moves the stopper unit 60. Even when it hits the cushion member 61, the repulsive force of the compression spring 62 that tries to stop the slide board is initially weak and gradually increases. As described above, the stopper unit 60 uses the length of the casing 63 and can sufficiently stop the impact applied to the rotationally moving member and the slide board by sufficiently increasing the buffer distance.

However, such a stopper unit 60 has a problem to be solved. That is, when the wheel 53 of the rotational movement member 50 hits the cushion member 61 of the stopper unit 60, as shown in FIG. 7, the cushion member 61 abutting on the wheel 53 is urged in that direction by the force in the rotational direction of the wheel 53, As a result, the distal end direction of the casing 63 is bent downward and may be damaged.
In addition, as shown in FIG. 8, there is a gap on the front surface of the rail member 51 where the flange 54 connecting the rotationally moving member 50 and the frame body comes and goes, and when the fingers are inserted into the gap, the rail member 51 slides in the rail. There was a risk of getting caught between the wheels.

  The present invention has been proposed to solve the above-described problems of the prior art. That is, the present invention can relieve the shock at the time of stop by gradually decelerating the moving slide board from the front of the stop position, and there is no fear that the fingers will be caught in the wheels by inserting fingers into the rail member. An object of the present invention is to provide a shock absorber for a slide board that can be used.

  As a result of diligent research in view of the above-described problem, the inventor has developed a stopper unit that decelerates the slide board by increasing the repulsive force of the spring material that is compressed or expanded by being pushed by the moving rotationally moving member. By using a shock absorber for a slide board that prevents the housing from bending and pinching fingers by devising to provide a cover so that it does not directly contact a rotationally moving member such as a wheel, I came up with a solution to the problem.

That is, the present invention provides a rail member that is arranged side by side on a writing board disposed on a wall surface, and a rotation that moves along the rail member integrally with a slide board that moves and covers the front surface of the writing board. The moving member and a stopper unit having a spring property that is compressed or extended by being pushed by the rotating moving member disposed on the rail member to increase the repulsive force and decelerate the slide board. In the shock absorbing device, the rotationally moving member is provided with a cover member that moves integrally with the rotationally moving member with a gap in the moving direction of the rotationally movable member, and between the rotationally movable member and the cover member. The gap is sized so that when the cover member comes into contact with the stopper unit, the cover member bends and contacts the rotationally moving member. By further advancing after contacting the buffer member, the urging force from the stopper unit to the cover member increases, and the cover member comes into contact with the rotationally moving member more strongly and tries to stop. And
As a result, a mechanically set complete stop is achieved by two braking actions: a repulsive force by the buffer member and braking by contacting the rotationally moving member, without giving a great impact to the rotationally moving member that moves. It is possible to stop before the position.

Further, the present invention is characterized in that the cover member is held in a cantilever structure so as to cover the periphery of the rotational movement member.
As a result, the cantilever structure cover member comes into contact with the stopper unit and easily bends, so that the cantilever structure cover member can be brought into contact with the rotationally moving member and exert a braking action.

It is a perspective view which shows the state which installed the slide board provided with the impact buffering device of embodiment on the blackboard. It is the side view which abbreviate | omitted the middle part which shows the state which installed the slide board in the blackboard. It is the perspective view, top view, and front view which show the impact buffering device for slide boards of embodiment. It is the perspective view and top view which show the impact buffering device for slide boards of embodiment. It is the perspective view and top view which show the impact buffering device for slide boards of embodiment. It is a front view which shows the conventional impact buffering device for slide boards. It is a front view which shows the conventional impact buffering device for slide boards. It is a front view which shows the conventional impact buffering device for slide boards.

  Hereinafter, the best mode for carrying out the shock absorber for a slide board of the present invention will be described in detail with reference to the accompanying drawings. 1 to 5 are diagrams illustrating embodiments of the present invention. In these drawings, the same reference numerals denote the same components, and the basic configuration and operation are the same. To do.

<Configuration>
FIG. 1 shows a writing board 2 such as a blackboard or a white board attached to a wall surface 1, and rail members 3 are arranged side by side on the upper side and the lower side of the writing board 2. A frame body 4 provided with a moving member such as a wheel that slides in the rail is arranged, and a slide board 5 such as an electronic blackboard or an interactive board is attached to the frame body 4. Reference numeral 6 denotes an optical member such as a projector or an image scanner attached to the upper front surface of the slide board 5 via an arm 7.

FIG. 2 shows a state in which the slide board 5 covers the front surface of the writing board 2 and is movable in the horizontal (left / right) direction. The slide board 5 is used in a state where the slide board 5 is located at the center of the writing board 2. After use, the slide board 5 moves to the left in FIG. 2 and is retracted and fixed at a position that does not hinder the use of the writing board 2.
Reference numeral 8 denotes a crawler having flexibility without expanding and contracting, which restricts the left and right movement range of the frame body 4 to which the slide board 5 is attached.

FIG. 3 shows the shock absorber for a slide board according to the present embodiment, and shows a state immediately before the shock is buffered. 3A is a perspective view, FIG. 3B is a plan view, and FIG. 3C is a side view.
The rotary moving member 10 for moving the slide board is slidably disposed in the rail member 3, and before and after sliding on the bottom surface in the rail member 3, the pair of first wheels 11 and the rail member 3 A pair of second wheels 12 that limit a lateral swing width by making contact with a slight gap on the side surface, and a cover that moves integrally around the first wheel 11 and the second wheel 12 It is comprised from the member 13. FIG. The rotationally moving member 10 is integrally fixed to the frame body 4 to which the slide board 5 is attached via the bracket 14.

The cover member 13 of the rotationally moving member 10 has a cantilever structure in which the base end portion is fixed to the bracket 14 and the front end portion 13 a is an open end, and the front end portion 13 a is in the pair of first wheels 11. It is arranged to be set to a slight gap, for example, 1 mm or less, from each tip in the traveling direction. The cover member 13 is made of a hard synthetic resin or metal having an appropriate spring property so that the tip end portion 13a of the cover member 13 can be bent.
By covering the first wheel 11 and the second wheel 12 with the cover member 13, even when a finger is inserted into the gap of the rail member 3, there is no possibility that the wheel may pinch the finger, thereby making the slide board It can be used more safely than ever.

On the other hand, in the vicinity of the position where the slide board is stopped in the rail member 3, a stopper unit 20 is arranged to buffer the impact while the rotary moving member 10 collides.
The stopper unit 20 has the same configuration as the above-described conventional stopper unit, a cushion member 21 made of rubber or the like at the tip, a housing 23 provided with one end of a compression spring 22 disposed after the cushion member 21, and a compression member. The support 22 is fixed to the rail member 3 by abutting the other end of the spring 22 and movably supporting the housing 23.

The clearance between the tip 13a and the first wheel 11 was set by comprehensively considering the mass of the slide board, the size and material of the cover member 13, the spring constant of the compression spring 22, and the like. Above, it is set to an appropriate dimension.
It is preferable that the impact shock absorbers for the slide board according to the present embodiment configured by the above-described rotary moving member 10 and the stopper unit 20 are respectively disposed at four locations corresponding to the four corners of the slide board 5.

<Operation>
The operation of the impact shock absorber for a slide board of this embodiment having such a configuration will be described below with reference to FIGS. In each figure, (A) is a perspective view and (B) is a plan view.
First, as the slide board 5 moves, the rotationally moving member 10 connected to the frame body 4 via the bracket 14 moves in the rail member 3 in the left direction in FIG.
As shown in FIG. 4, the distal end portion 13 a of the cover member 13 of the rotationally moving member 10 contacts the cushion member 21 at the distal end of the stopper unit 20.

At this time, the casing 23 of the stopper unit 20 is pushed by the rotationally moving member 10 and moves to the left in FIG. 4, and the biasing force that works to the right in FIG. 4 due to the spring property of the compression spring 22 that has been moved and compressed. (Repulsive force) is generated. Due to the repulsive force of the compression spring 22, the rotationally moving member 10 is weakly braked and is pushed in a direction to bend the distal end portion 13 a of the cover member 13.
However, when the compression spring 22 is somewhat contracted, the distal end portion 13a of the cover member 13 is not bent as much as the distal end portion 13a of the cover member 13 and the first wheel 11 come into contact with each other. The only brake that acts on 10 is the repulsive force of the compression spring 22 that gradually increases in accordance with the moving distance of the rotary moving member 10.

When the rotationally moving member 10 further moves to the left in FIG. 4 to the position shown in FIG. 5, another braking is applied in addition to the repulsive force of the compression spring 22.
That is, the repulsive force increased by the compression spring 22 bends the tip portion 13a of the cover member 13 so that the tip portion 13a contacts the first wheel 11 and mechanically brakes the rotation of the wheel. It is.
The shock absorbing device of the present invention is stopped before the complete stop position mechanically set by the support member 24 without giving a great shock to the moving rotary moving member 10 by the two braking actions described above. It becomes possible to make it.

  In the above-described embodiment, the case where there are two first wheels of the rotationally moving member has been described. However, the number of wheels is not limited to this, and the second wheel is also an essential component. is not. Further, in the present embodiment, the compression member having the spring property used for the stopper unit has been described with respect to the compression spring. However, the present invention is not limited thereto, and a tension spring may be used.

  As mentioned above, although this invention was shown and demonstrated concrete embodiment, this invention is not limited to these. A person skilled in the art can add various changes and improvements to the configurations and functions in the above-described embodiments without departing from the scope of the present invention.

  The impact shock absorber for a slide board according to the present invention can be widely used in education industries, general companies, etc. that use a writing board such as a blackboard or a whiteboard together with an electronic blackboard or an interactive board.

DESCRIPTION OF SYMBOLS 1 ... Wall surface 2 ... Writing board 3 ... Rail member 4 ... Frame body 10 ... Rotary moving member 11 ... 1st wheel 12 ... 2nd wheel 13 ... Cover member 13a ... Tip part 20 ... Stopper unit 21 ... Cushion member 22 ... Compression spring 23 ... Housing

Claims (2)

A rail member arranged side by side on the writing board disposed on the wall surface, a rotationally moving member that moves along the rail member integrally with a slide board that moves and covers the front surface of the writing board, and the rail In the shock absorbing device comprising a stopper unit that has a spring property that compresses or expands by being pushed by the rotating and moving member disposed on the member and increases the repulsive force and decelerates the slide board.
The rotationally moving member is provided with a cover member that moves integrally with the rotationally moving member with a gap provided in the moving direction of the rotationally movable member,
The gap between the rotationally moving member and the cover member is sized such that when the cover member comes into contact with the stopper unit, the cover member bends and contacts the rotationally movable member, and the moving cover member contacts the buffer member. The slide board is characterized in that the urging force from the stopper unit to the cover member is increased by further proceeding after contact, and the cover member comes into contact with the rotationally moving member more strongly and stops. Shock absorber.   2. The impact shock absorber for a slide board according to claim 1, wherein the cover member is held in a cantilever structure so as to cover the periphery of the rotary moving member.