JP2000220114A - Automatic opening/closing device for wind shield - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic opening/closing device for wind shield which can open/close a wind shield such as the windbreak fence, etc. by utilizing the energy of a strong wind as a direct power source, does not sway, but can be maintained stably in both opened and close attitudes, is less in fault, and can be maintained and serviced easily. SOLUTION: A wind shield 2 is openably/closably journaled by a part upper than the center between its upper and lower ends so that a wind pressure may act to close the shield 2 in a forwardly tilted state and a balance weight 11 and an adjustment weight are installed to the upper end of the shield 2. In addition, an opening stopper 3 which receives the shield 2 in a state where the shied 2 is slightly inclined forward from the horizontal position and a closing stopper 5 which receives the shield 2 in a nearly vertical state are provided and positioned to the rear side of the rotating shaft 9 of the shield 2 so that the balance weight 11 may act to open the shield 2 in a backwardly turned state when the shield 2 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic opening / closing device for a wind shield, such as a windbreak fence, a sand fence fence, a snowstorm fence, and a ventilation window, which obstructs the view.

[0002]

2. Description of the Related Art With regard to windbreak fences, especially on an expressway close to the Sea of Japan, the seasonal wind peculiar to the Sea of Japan blows in winter, so windbreak fences have been installed to ensure safe running in strong winds. I have. Since the installation hinders the landscape, the Japan Highway Public Corporation said, “The standard of the wind speed at the time of automatic opening and closing of the windbreak fence is open when the speed is less than 7.5 m / s,
The setting condition is presented as follows.

[0003] However, in the past, this type of automatic opening and closing device for a wind shield has been designed to open and close by detecting the wind force.
There is a separate power source, and there is an idea to convert wind energy into electric energy as the power source, but there are many failures and maintenance is not easy.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its main object to open and close wind shields such as windbreak fences by using strong wind energy as a direct power source. In other words, it is not a mechanism that converts wind energy to other energy, but rather uses a wind shield as a blade to directly receive wind power and rotates the wind shield, so there is less trouble and easy maintenance and maintenance of the wind shield. The primary purpose was to provide

[0005] In order to achieve this object, intensive studies have been made. FIG. 4 shows a trial plan in progress, in which a support (not shown) is erected outside the guardrail G on the side of the road, and the windbreak fence 20 is supported at the lower end between the supports, and is provided below the rotation shaft 22 thereof. A closed stopper 24 for receiving a weight and vertically receiving the windbreak fence 20 so as to fall down only in front of the door.
And an open stopper 28 which is received in a rearward inclination when the vehicle is tilted forward.

According to this, when the wind power is below a certain level,
The windbreak fence 20 is opened forward, but when the windbreak fence 20 is above a certain level, the windbreak fence 20 is lifted up by the wind force and closed, and when the wind force weakens, it is opened. However, the swings are severe due to the strength of the wind, and neither the open nor the open position is stable. In addition, since the rotating shaft 22 is at the lower end near the ground, there is a problem that opening and closing may be hindered by snow accumulation.

[0007] In view of such circumstances, an object of the present invention is to provide, in addition to the above objects, the stability of a wind shield, such as a windbreak fence, that does not swing in both open and closed positions.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plate-like or blade-like wind shield which is opened and closed above the center of both upper and lower ends so that wind pressure acts to close forward. A balance weight and an adjustment weight are provided at the upper end of the wind shield, and the adjustment weight is attached to a support shaft that projects forward at a right angle from the wind shield so that the opening and closing reference wind pressure can be set. In addition, an open stopper that receives the wind shield slightly in front of the horizontal and a close stopper that receives the wind shield substantially vertically are provided. It is an object of the present invention to provide an automatic windshield opening / closing device, which is set so as to be located behind a rotation axis of the shield.

According to the above configuration, the center of gravity of the windshield, to which the balance weight and the adjustment weight are added, is located above and behind the rotation axis. The wind shield falls backward and becomes open. In addition, because the rotating shaft is biased upward and receives more wind pressure below it, and because it is tilted before receiving the wind pressure in the open state, the wind shield is tilted forward by the wind pressure under a certain level of wind pressure. , Received in the closed stopper and held in the vertically closed state.

In the closed state, when the wind pressure falls below a certain level, the force associated with the center of gravity predominates and returns to the open state again. The open stopper keeps the wind shield at a near-horizontal forward inclination. Is done.

Since the adjusting weight is located forward of the wind shield by the support shaft and deviated from the width direction, the adjusting weight applies a load in the closing direction when closing and applies a load in the opening direction when opening.
Therefore, both open and closed states are stably maintained. Further, since the center of gravity is shifted by the adjustment, the wind pressure serving as the opening / closing reference can be set by the adjustment weight.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied not only to windbreak fences but also to sandsand fences, snowstorm fences, ventilation windows, and the like by the same principle. The material and shape of the wind shield 2 are not particularly limited, and may be net-like or lattice-like. In snowy areas, it is desirable to use a single-stage type (Fig. 1 and Fig. 2) which is not affected by snow. (FIG. 3).

When the adjustment weight 30 is attached, it is desirable that the support shaft 15 be rod-shaped so that the influence of the wind pressure is not so large. Also, the position adjustment of the center of gravity
This can be done not only by the position of the adjusting weight but also by its weight.

[0014]

As described above, according to the present invention, the wind shield is opened and closed by using the energy of strong wind as a direct power source, and the setting of the wind pressure as a reference for opening and closing is also movable. Since there is no need for a separate power source, the structure and the wind pressure setting are simple, there are few failures, maintenance is easy, and both open and closed states can be stably maintained.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic diagram of a windbreak fence installed on a coastal road facing the sea, and FIG. 2 shows a schematic diagram thereof. FIG. 3 shows a two-stage type implemented as a sand-prevention fence.

The pillars 1, 1,... Are erected along a guardrail G along the road, and a wind shield 2 as a windbreak fence is installed between the pillars 1, 1 in a reversible manner. A stopper 3 for holding the wind shield 2 "open" and a stopper 5 for holding the wind shield 2 "closed" are provided. At the upper end of the column 1, a bracket 7 is fixedly mounted, on which a rotating shaft 9 of the wind shield 2 is supported, and an open stopper 3 is also attached thereto.

The wind shield 2 is provided with rotating shafts 9, 9 at both ends above the center between the upper and lower sides, a balance weight 11 is attached along the upper frame, and an adjustment weight 13 is provided at one end. It is installed.

The balance weight 11 is provided to shift the center of gravity above the rotation shaft 9 and rearward since the windshield 2 has the rotation shaft 9 at a position deviated upward with respect to the vertical width. . Therefore, when there is no wind or under a certain or lower wind pressure, the wind shield 2 falls down (arrow P), and is in an open state.

For the adjustment weight 13, the wind shield 2
A support shaft 15 is protrudingly provided at the upper end of the cover so as to protrude forward at a right angle in a state of "closed", and is attached to a tip end thereof so as to be adjustable in position.

The open stopper 3 allows the wind shield 2 to be "open".
In this state, the adjustment weight 13 is mounted so as to receive the load of the adjustment weight 13 behind the rotary shaft 9 at a slight angle α with respect to the horizontal.

FIG. 1 shows the open state of the wind shield 2 along the two-dot chain line. At this time, as described above, since the wind shield 2 is in a rollover state that is slightly inclined forward toward the sea and is almost horizontal, the degree of hindrance to the view is small, and the seascape can be seen from the road.

At this time, when there is no wind or the wind is weak, when a certain amount of wind blows from the sea, it hits the inclined surface of the wind shield 2 and is directed toward the surface below the rotation axis 9. Since a large amount of wind is applied, the lower end of the rotating shaft 9 tends to rotate downward, and the force of the lower end exceeds the pressing force of the adjustment weight 13.
To close (arrow Q).

The movement of the adjusting weight 13 from the "closed" state to the "opened" state of the wind shield 2 is a circular orbit centered on the rotating shaft 9, and is defined as a rotational moment in the "closed" and "open" states, respectively. In order to exert the force of the load, the "closed" and "open" states of the wind shield 2 are stably held.

[Brief description of the drawings]

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

FIG. 2 is an explanatory view schematically showing the embodiment.

FIG. 3 is an explanatory diagram corresponding to FIG. 2 showing another embodiment.

FIG. 4 is an explanatory view corresponding to FIG. 2 showing a prototype example leading to the present invention.

[Explanation of symbols]

 2 Wind shield 3 Open stopper 5 Closed stopper 9 Rotary shaft 11 Balance weight 13 Adjustment weight 15 Support shaft

Claims (1)

[Claims] 1. A plate-shaped or blade-shaped wind shield is pivotally supported so as to be able to open and close above the center of both upper and lower ends so that wind pressure acts to close forward, and a balance weight and an adjustment weight are provided at the upper end of the wind shield. The adjustment weight is attached to the support shaft that projects forward at a right angle from the wind shield so that the wind pressure can be set as the opening and closing reference. And a close stopper that is received substantially vertically, and when closed, the balance weight is positioned rearward of the rotation axis of the windshield so that the balance weight acts to open the rear rotation. An automatic opening and closing device for a wind shield.