JP3465143B2 - Wind and snow fence - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel section consisting of a vertical section and an inclined sneak section (referred to as a sneak back section) on the vertical section, and the panel section is composed of a plurality of rotatable panels. At the same time, the present invention relates to a windproof and snowproof fence in which each rotating panel can be switched between an open state in which it is laid horizontally and a windproof and snowproof state in which it is raised.

[0002]

2. Description of the Related Art Conventionally, as a wind and snow fence installed on a side edge of an expressway, etc., a panel portion is composed of a plurality of rotatable rotating panels arranged vertically, and each rotating panel is used in a snowfall season or a strong wind season. There is known a wind and snow fence which improves visibility by opening each rotating panel horizontally in the other seasons to raise the visibility.
-26518, etc.). In this type of conventional wind and snow fence, the panel section and the columns are generally vertical as a whole, and each rotating panel is connected to the operating rod provided in parallel with the vertical columns by a pin to form a parallel link mechanism, The rotating panel is opened and closed by moving the operating rod up and down.

By the way, the panel section is not limited to the vertical section,
In some cases, a windbreak snow fence with a shining part, which has a sloping shining part at the upper end of the vertical part, is adopted.However, in this type of conventional wind-proof snow fence with a shining part, the rotating panel is provided only in the vertical part. The panel of the part is generally fixedly provided. In addition, when the panel of the shinobi part is also a rotating panel, an operating rod different from the operating rod for rotating the rotating panel of the vertical part is provided to open and close independently of the rotating panel of the vertical part. Has been done.

[0004]

In the conventional windbreak and snow fence with the shining part in the above-mentioned rotating panel system, in which the panel of the shining part is fixedly provided, the view of this part is always obstructed. It is not enough to improve visibility. In addition, although the panel of the shinobi part is a rotating panel type, if the opening and closing operation is performed by a mechanism different from the rotating panel of the vertical part, two opening and closing operation mechanisms are required, so the structure is complicated and the cost is high. Become. Further, the opening and closing operations are required twice, which makes the opening and closing work complicated. Moreover, since the shinobi part is usually installed on a windproof and snowproof fence with a high fence height, the opening / closing operation of the rotating panel of the ninja part is performed at a high position, and the opening / closing work is not easy.

The present invention has been made in order to solve the above-mentioned conventional drawbacks. In a windproof and snow fence with a shining part, not only the vertical part of the panel but also the shining part is of a rotating panel type, and the vertical part It is an object of the present invention to provide a windproof and snowproof fence capable of opening and closing the rotating panel and the rotating panel of the shining part with a single operating rod.

[0006]

According to the present invention for solving the above-mentioned problems, there is provided a strut in which a strut stake portion is connected to an upper end of a stanchion vertical portion at a sneak angle α, and a vertical portion rotation center in the struts vertical portion. A plurality of vertical part rotation panels that are rotatably attached about the axis and lined up and down, a shinobi part rotation panel that is rotatably attached to the ninja part on the ninja part rotation center axis, and the pillar vertical part. The operation rod vertical portion is provided with an operation rod connected to the upper end of the operation rod vertical portion along the support rod shining portion, and the operation rod vertical portion and a plurality of vertical portion rotating panels constitute a parallel link mechanism. And connecting the operating rod shining part and the shining part rotating panel so that the connecting pin on one side slidably engages with the elongated hole on the other side. , Shinobi Club The real rotation radius r of the cycle by less than the rotational radius R of the vertical section rotating panel, the rotation angle of the bear section rotating panel with respect to the rotation angle gamma of the vertical section rotating panel (gamma
+ Α) is set.

According to a second aspect of the present invention, in the wind and snow fence according to the first aspect, the tip of the vertical portion horizontal projecting member integrally fixed to the operation rod vertical portion and the vertical portion connecting plate integrally fixed to the vertical portion rotation panel are provided. A connection pin fixed to the tip of a horizontal projection member that is longer than the vertical horizontal projection member and that is connected to the position of the radius of gyration R so as to be relatively rotatable by a connection pin, and that is integrally fixed to the operation rod stab part. Slidingly engages with the long hole provided in the shining part connecting plate integrally fixed to the shining part rotating panel, and the connecting pin initial engaging position on the long hole of the connecting plate of the shining part rotating panel is set to the turning radius. It is characterized in that it is set at a position having a substantial radius r of rotation smaller than R, and the rotation angle of the sneaker rotation panel is (γ + α) with respect to the rotation angle γ of the vertical rotation panel.

According to a third aspect of the present invention, in the windbreak / snow fence according to the first aspect, the operating rod is in an open state in which the vertical rotating panel and the shining portion rotating panel are respectively laid down horizontally to raise or lower the operating rod. , As a control rod restraining means for restraining the control rod in two positions, that is, a windproof and snowproof state by lowering or raising the control rod to raise each vertical portion rotation panel and the shining portion rotation panel, and horizontally at the lower portion of the column vertical portion. The extending operation rod receiving member is fixed, and the operation rod receiving member is provided with engaging portions with the operation rod at least at two different positions in the horizontal direction.

According to a fourth aspect of the present invention, in the wind and snow fence according to the first aspect, when the operation rod is lowered or raised to bring up the vertical portion rotation panel and the shining portion rotation panel respectively, the operation rod vertical It is characterized in that an operation rod retainer is attached to the column vertical portion by engaging so as to restrain the upper portion of the portion from moving in a direction away from the column vertical portion and reinforcing the operation rod vertical portion.

According to a fifth aspect of the present invention, in the windbreak and snow fence according to the first aspect, the rotation center axes of the vertical portion rotation panel and the shining portion rotation panel are decentered from their respective centers of gravity.

According to a sixth aspect, in the windbreak and snow fence according to the first aspect, the vertical portion rotary panel in the lowermost stage or in the vicinity thereof,
It is characterized in that a rotary lever protruding toward the operation rod side in the panel width direction is fixed as an up-and-down operation unit for vertically moving the operation rod.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
~ It demonstrates with reference to FIG. FIG. 1 is a front view of a windproof and snowproof fence 1 according to an embodiment of the present invention, showing a windproof and snowproof state in which a rotary panel described later is raised. 2 is a sectional view taken along line AA of FIG. FIG. 3 is a front view of the windproof and snow fence 1 with the rotating panel lying horizontally, and FIG. 4 is a sectional view taken along line BB of FIG. This wind and snow fence 1 is installed along a highway, for example, and a panel 5 is installed on a pillar 2 which is erected at a distance.
Is attached. The wind and snow fence 1 has a structure having a sneak part (sneak back), and the support column 2 has a support stake portion 4 inclined at a sneak angle α (α = 30 ° in the embodiment) at the upper end of the support column vertical portion 3.

The panel 5 of the wind and snow fence 1 is composed of, for example, five vertical rotating panels 7 arranged vertically, which are rotatably attached to the vertical supporting portion 3 of the supporting pillar 2 about a vertical rotating shaft 6 and a supporting pillar. It comprises, for example, two ninja rotation panels 9 rotatably attached to the sneak part 4 about a sneaker rotation center axis 8. Further, an operating rod 10 for rotationally driving the rotary panels 7 and 9 is provided. The operating rod 10 is composed of an operating rod vertical portion 11 along the vertical column 3 and an operating rod shining portion 12 along the vertical column 4, and has a bent shape similar to that of the vertical column 2.

The operating rod 10, the five vertical rotation panels 7 and the two shin rotation panels 9 are connected to each other so that they can rotate relative to each other. That is, FIG. 10 and FIG.
As shown in detail in FIG. 7, the vertical portion horizontal protruding members 15 fixed to the operation rod vertical portion 11 and the vertical portion connecting plate 16 integrally fixed to each vertical portion rotating panel 7 are connected by a connecting pin 17. They are connected so that they can rotate relative to each other. Let R be the radius of gyration of the vertical rotation panel 7 (the radius of gyration at the position of the connecting pin 17). Therefore, the operation rod vertical portion 11 and the five vertical portion rotation panels 7 constitute a parallel link mechanism, and when the operation rod 10 is moved up and down, each vertical portion rotation panel 7 is moved.
Rotates about the vertical rotation center axis 6 while maintaining parallelism (that is, at equal angles). Also, the operating stick ninja section 1
The connection pin 21 is fixed to the tip of the horizontal projection member 20 of the shin part fixed to 2, while the elongated hole 23 is formed in the sine part connection plate 22 fixed to the rotation panel 9 of the shin part, and the operation bar ninja part 12 side Of the connecting pin 21 is slidably engaged with the elongated hole 23 on the side of the shingle rotation panel 9. Then, the ninja connection plate 22 when the ninja rotation panel 9 is horizontal
The position of the connecting pin 21 on the long hole 23 (the position of the connecting pin 21 in the state of FIGS. 8 and 10), that is, the initial engaging position of the connecting pin is the substantial turning radius r of the shining part rotating panel 9. Therefore, the substantial rotation radius r is set to be smaller than the rotation radius R of the vertical rotation panel 7. In this case, by appropriately setting the mutual relation, the rotation angle 90 of the vertical rotation panel 7
The rotation angle of the Shinobi rotation panel 9 is 120 ° with respect to °
(= 90 ° + 30 °). In this embodiment, the vertical rotation panel 7 in the windproof and snowproof state is vertical (that is, the rotation angle γ = 90 ° of the vertical rotation panel 7).

The vertical rotary panel 7 will be described in detail.
As shown in FIGS. 5 to 7, the vertical rotation panel 7 is
For example, it has a structure in which side frames 26 of angle steel are fixed to both ends of a panel body 25 having a rectangular corrugated section with bolts 27.
A rotation center shaft 6 is fixed by welding to a side surface of the shaft by a round pipe. The rotation center shaft 6 of the vertical rotation panel 7 is housed in the U groove 28a of the receiving member 28 welded and fixed to the inner surface of the column 2 made of H-shaped steel, and the detachment prevention bolt 29 is used to prevent the detachment. The sneaker rotation panel 9 has substantially the same structure as the vertical rotation panel 7 described with reference to FIGS. 5 to 7. That is, the configuration in which the side frames are fixed to both ends of the panel body, the configuration in which the rotation center shafts 8 by the round pipes at both ends are received by the receiving members fixed to the column stalks 4, and the like are substantially the same, and a detailed description thereof will be omitted.

In the vertical part rotation panel 7 and the sneaker part rotation panel 9 of this embodiment, the rotation center shafts 6 and 8 are eccentric from their respective centers of gravity. Therefore, the weight of the rotating panels 7 and 9 partially bears the reaction force of the wind load, so that the load applied to the operating rod 10 can be reduced, the weight of the operating rod 10 can be reduced, and the operability is improved. To do.

As shown in FIGS. 1 to 4 and 5, etc., an operating rod receiving member 30 made of, for example, chevron steel for restraining the operating rod 10 is horizontally projected and fixed near the lower end of the column 2. ing. The operation rod receiving member 30 has engagement holes 30a and 30b formed at two positions on the front end side and the inner side, and on the other hand, at the upper and lower two positions in the vicinity of the lower end of the operation rod 10 for the raised position. 2 and the engaging hole 10a for the descending position, the engaging hole 10b on the lower side is engaged with the engaging hole 30b on the outer side of the operating rod receiving member 30 in the ascending position of FIG. The engaging hole 10a is engaged with the engaging hole 30a inside the operation rod receiving member 30. In this way, the operating rod 10 is restrained in the raised position and the lowered position. Reference numeral 31 is a grip for manually operating the operating rod 10.

Further, in the lowermost vertical rotation panel 7,
As a vertical operation unit for vertically moving the operation rod 10,
As shown in FIG. 12, FIG. 1, FIG. 3, etc., the rotary lever 33 protruding in the width direction of the rotary panel is fixed. The illustrated rotation lever 33 is welded and fixed to the side frame 26 of the vertical rotation panel 7. Further, the wind and snow fence 1 of the embodiment has a fixed panel 40 below the vertical rotation panel 7.

An operation rod retainer 35 is attached to the surface of the column 2 on the operation rod 10 side. This operating rod holder 35
Is a thin square pipe, and as shown in FIG. 12, FIG. 13 and FIG.
It is fixed to 6a and 36b with bolts. A pressing plate 37 is welded and fixed to the upper end portion of the operation rod retainer 35, and when the vertical rotation panel 7 is in a windproof and snowproof state, that is, when the operation rod 10 is lowered, it is welded and fixed to the operation rod 10. The bent end portion of the bending stopper 38 enters the gap between the column 2 and the pressing plate 37, and restrains the operation rod 10 from moving downward in FIG. Therefore, in the windproof and snowproof state, it reinforces the operation rod 10 that receives a force from the rotary panels 7 and 9 that try to rotate by wind pressure. Control rod holder 3
A grip 39 is also attached to the lower end of 5. In addition,
The mounting plates 36a and 36b have two engaging holes.
Depending on the engagement position, the operating rod retainer 35 may be used as a reinforcement of the operating rod 10 or may not be used.

A description will be given of how to use the wind and snow fence 1 described above. When it is not necessary to make this wind and snow fence function in summer, etc., the vertical rotation panel 7 and the ninja rotation panel 9
Are set horizontally as shown in FIGS. 1, 2 and 10. When the above-mentioned open wind and snow fences 1 are put into the wind and snow protection state in the winter season, the rotary lever 33 (FIG. 1) which is fixed to the vertical rotation panel 7 at the bottom and is horizontal is shown. Three
As described above, the lowermost vertical rotation panel 7 is rotated upward about the rotation center axis 6 and the operation rod vertical section 11 is lowered (vertical rotation center axis 6).
(A locus of rotating downward about the center) and the upper vertical part rotating panels 7 constituting the parallel link mechanism are simultaneously rotated upward. At this time, the movement of the operation rod sneaker 12 having the same locus as that of the operation rod vertical portion 11 causes the sneaker rotation panel 9 to rotate in a larger angle range, and the windproof and snowproof state shown in FIGS. 3 and 4 is obtained. The above process is shown in FIG.
(B), (c) and FIG. 9 (d), (e). Figure 8
In (a), the vertical rotation panel 7 and the shin rotation panel 9 are in a horizontal open state. When the operating rod 10 is lowered, the windproof and snowproof state shown in FIG. 9 (e) is obtained after passing through FIGS. 8 (b), 8 (c) and 9 (d). 8 (b), the rotation angle of the vertical part rotation panel 7 is 30 °, the rotation angle of the shining part rotation panel 9 is 49 °, and FIG. 8 (c) is the rotation angle of the vertical part rotation panel 7 is 60 °, shining part The rotation angle of the rotation panel 9 is 90 °, the rotation angle of the vertical rotation panel 7 is 75 °, and the rotation angle of the Shinobi rotation panel 9 is 106 ° in FIG. 9D.
9 (e), the rotation angle of the vertical rotation panel 7 is 90 °, and the rotation angle of the shin rotation portion rotation panel 9 is 120 °.

As described above, the vertical rotation panel 7 has 90
When rotating by ° (γ = 90 °), the Shinobi rotation panel 9 becomes 1
Explaining the principle of rotating by 20 ° (γ + α = 120 ° (sneak angle α = 30 °)) and the procedure for setting in such a manner, O _{2 in} FIG.
The rotation center (rotation center axis 8), P ₂ (p ₂ ) is the position of the connecting portion between the ninja rotation panel 9 and the operating rod sneaker 12 when the ninja rotation panel 9 is in the horizontal open state. Is. That is, P ₂ is the position of the connecting pin 21 fixed to the tip of the horizontal protruding member 20 of the operating rod shining part 12, and p ₂ is the initial engaging of the connecting pin on the elongated hole 23 of the connecting plate 22 of the shining part rotating panel 9. The position. That is, the line segment connecting the connecting pin initial engagement position p ₂ and O ₂ is the substantial turning radius r of the shining part rotating panel 9. O ₁ is the Shinobi rotation panel 9
It is the rotation center (rotation center axis 6) of the vertical part rotation panel 7 corresponding to the rotation center O ₂ of. That is, when the operation rod 10 is pushed down and the vertical rotation panel 7 is rotated by 90 ° with the radius R of rotation, the operation rod shining portion 1 of the operation rod 10 which moves in parallel is moved.
The connecting pin P ₂ (21) on the second side has an arc locus having the same shape as the 90 ° arc locus of the vertical rotation panel 7 (90 ° about the rotation center O ₁ from P2 to P2 ′ in FIG. 11). Draw an arc locus) A and move. The distance of the elongated hole 23 of the connecting plate 21 in the sneaker rotation panel 9 from the sneaker rotation panel center line C is h. When this h is determined, the substantial radius of rotation r for rotating the sneaker rotation panel 9 by 120 ° with respect to the rotation angle 90 ° of the vertical rotation panel 7 is determined. The connecting pin initial engagement position p ₂ of the sneaker rotation panel 9 rotates about the rotation center O _{2 along} an arc locus B having a substantial rotation radius r. At this time, the locus (arc locus A) of the connecting pin P ₂ on the side of the operating rod sneaker 12 in the connecting portion between the sneal portion rotating panel 9 and the operating rod sneaker 12 and the substantial turning radius point on the side of the shining portion rotary panel 9 The locus on the p ₂ side (arc locus B)
Although different trajectories are drawn as shown in the figure, the difference in the trajectories is absorbed by the connecting pin / oblong hole connection by relative sliding engagement between the connecting pin 21 and the elongated hole 23. The actual rotation radius r of the shining part rotation panel 9 is smaller than the rotation radius R of the vertical part rotation panel 7, and the shining part rotation panel 9 is 9 of the vertical part rotation panel 7.
Rotation angle 120 ° (90 ° +
Rotate 30 °).

In the above-described embodiment, as a concrete connection structure between the operating rod 10 and the rotating panels 7 and 9, the horizontal protruding portions 15 and 20 integrally fixed to the operating rod 10 side and the rotating panel 7 are provided.
Although the connection plates 16 and 22 integrally fixed to the 9 side are connected, the horizontal projections 15 and 20 and the connection plates 16 and 22 do not necessarily have to be provided, and the operation rod 10 and the rotary panels 7 and 9 are not necessarily provided. It is also possible to directly connect and.

The wind and snow fence 1 of the embodiment is provided with two sneaker rotation panels 9, but only one or three or more may be provided. Further, in the wind and snow fence 1 of the embodiment, the rotation panels 7 and 9 in the wind and snow protection state are parallel to the support columns 2 and the fence surface is closed (a gap between the upper and lower rotation panels is ignored). It is also conceivable that the panels 7 and 9 are slightly tilted with respect to the support columns 2 so that the wind passes through the fence surface (passes through a rather large gap between the upper and lower rotating panels 7 and 9). That is, the wind and snow fence 1 of the embodiment
Then, the rotation angle γ of the vertical rotation panel 7 is set to, for example, 60 ° instead of 90 °. In addition, in the embodiment, when the operating rod 10 is lowered, the rotary panels 7 and 9 rotate in the closing direction, but when the operating rod 10 is raised, the rotary panels 7 and 9 rotate in the closing direction. The reverse configuration is also possible. Further, although the windbreak / snow fence 1 of the present invention is mainly used as a snow fence, its snow-preventing action is also based on the wind-preventing action, so that it can be applied not only for the purpose of preventing snow but also for the purpose of simply preventing wind. .

Also, for the sake of brevity of description, it has been described that the column 2 has the column vertical portion 3 and the column vertical portion 4, but
It is not excluded that the portion corresponding to the vertical column 3 is slightly inclined.

[0025]

According to the present invention, not only the vertical portion but also the shining portion in the windbreak snow fence with the shining portion (sneaking back) is composed of the rotating panel, and both rotating panels are the operating rods which can be moved up and down. It is configured to open and close, and further, the operation rod vertical part and a plurality of vertical part rotation panels are pin-connected so as to form a parallel link mechanism, and the operation rod sneak part and the sneak part rotation panel are connected on one side. The pin is connected so as to slidably engage with the elongated hole on the other side, and the substantial rotation radius r of the shin part rotation panel in the connection pin / oblong hole connection is made smaller than the rotation radius R of the vertical part rotation panel. Since the rotation angle γ of the vertical rotation panel is set so that the rotation angle of the sneaker rotation panel is (γ + stalk angle α), the following effects are achieved. The Shinobi panel is also composed of a rotating panel, further improving visibility when the wind and snow protection function is not used. Since the rotating panel of the vertical portion and the rotating panel of the shining portion are opened and closed by the same operating rod, only one opening / closing operation mechanism is required, the structure is simplified, and the manufacturing cost is low. In addition, opening and closing work is easy and workability is good. Further, the shinobi part is usually installed on a windproof and snow fence with a high fence, but since the opening and closing operation of the rotating panel of the ninja part can be operated at a low position, the opening and closing work can be facilitated in that respect as well.

According to the second aspect of the present invention, the horizontal projection member fixed to the operation rod side and the connecting plate fixed to the rotating panel side are connected by the pin connection or the connection pin / oblong hole connection, whereby the vertical portion is formed. It becomes easy to rotate the ninja rotation panel by the rotation angle (γ + α) with respect to the rotation angle γ of the rotation panel.

According to the third aspect, positioning and restraint of the operating rod corresponding to the open state of the rotary panel and the windproof and snowproof state can be realized with a simple structure.

Since the shinobi part is usually installed on a windproof and snowproof fence with a high fence height, the operating rod also becomes long, and if the section modulus is increased to increase its strength, it becomes heavy and the operability deteriorates. According to No. 4, since the operating rod retainer reinforces the operating rod in the windproof and snowproof state, the operating rod itself can be lightened and the operability is good.

According to the fifth aspect, since the respective rotation center axes of the rotary panel are eccentric from the respective center of gravity positions, a part of the weight of the rotary panel bears the reaction force of the wind load.
The load applied to the operating rod can be reduced, the weight of the operating rod can be reduced, and the operability is improved.

According to the sixth aspect, since the operating rod can be moved up and down by the rotary lever utilizing the moment force, the force for operating the operating rod and each rotary panel is reduced and the workability is improved.

[Brief description of drawings]

FIG. 1 is a front view showing a windproof and snowproof fence of an embodiment of the present invention in a windproof and snowproof state in which a rotating panel is raised.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a front view of the wind and snow fence of FIG. 1 showing an open state in which a rotating panel is laid horizontally.

FIG. 4 is a sectional view taken along line BB of FIG.

5 is an enlarged sectional view taken along line CC of FIG.

6 is a cross-sectional view taken along line DD of FIG.

7 is a cross-sectional view taken along the line EE of the main part of FIG.

FIG. 8 shows a process in which the vertical rotation panel and the sneaker rotation panel rotate from the horizontal state of FIG. 4 to the awake state of FIG. 2 when the operating rod is lowered, and 3 in the first half of the process. It is a figure which shows a stage ((a), (b), (c)).

9 is a diagram showing a process in which the vertical rotation panel and the shining rotation panel move from the horizontal state of FIG. 4 to the awake state of FIG. 2 when the operating rod is lowered, and in the latter half of FIG. It is a figure which shows two steps.

FIG. 10: When the vertical rotation panel is rotated by 90 ° (γ = 90 °), the shin rotation panel is rotated by 120 ° (γ + α = 90).
It is explanatory drawing which showed the mutual relationship which rotates (+30 degree = 120 degree).

11 is a diagram for explaining in more detail the mutual relationship of the rotation angles of the vertical part rotation panel and the shining part rotation panel shown in FIG.

FIG. 12 is an enlarged view of an F portion in FIG.

FIG. 13 is an enlarged view of a G portion in FIG.

14 is a sectional view taken along line HH of FIG.

[Explanation of symbols]

1 Windproof snow fence 2 props 3 prop vertical part 4 pillar support section 5 panels 6 Vertical rotation center axis 7 Vertical rotation panel 8 Shinobi part rotation center axis 9 Shinobi rotation panel 10 control rod 10a, 10b Engagement holes 11 Operation bar vertical part 12 Operation stick Shinobi 15 Vertical part Horizontal protrusion 16 Vertical part connection plate 17 connecting pin 20 Shinobi horizontal projection 21 Shinobi part connection pin 22 Shinobi part connection plate 23 slot 25 panel body 26 side frame 27 volts 28 Receiving member 28a U groove 29 Locking bolt 30 Operation rod receiving member 30a, 30b Engagement holes 31, 39 grip 33 Rotating lever 35 Control rod holder 36a, 36b Mounting plate 37 Press plate 38 Bend stop 40 fixed panel

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiro Ishii 71-1 Numanoue, Kurodachi, Uchikawa Kuroshichi, Gojome-cho, Minami-Akita-gun, Akita (56) References JP-A-10-8424 (JP, A) JP-A-7- 26518 (JP, A) Actual development Sho 59-61313 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E01F 7/02

Claims (6)

(57) [Claims] 1. A strut formed by connecting a strut stake portion to the upper end of the strut vertical portion at a sneak angle α, and vertically arranged on the strut vertical portion of the strut so as to be rotatable about a vertical portion rotation center axis. A plurality of vertical part rotation panels, a sword part rotation panel attached to the stake part rotatably around the sword part rotation center axis, and an upper end of the operation rod vertical part along the stake part vertical part. An operating rod formed by connecting the operating rod shining parts along with each other, and the operating rod vertical part and a plurality of vertical part rotating panels are pin-connected to form a parallel link mechanism, and the operating rod shining part and the shining part are connected. And the rotating panel is connected so that the connecting pin on one side slidably engages with the elongated hole on the other side, and the substantial rotation radius r of the shining part rotating panel in the connecting pin / oblong hole connection is set to the vertical portion. Rotating the rotating panel A windproof and snow fence which is smaller than the radius R, and is set so that the rotation angle of the vertical rotation panel is (γ + α) with respect to the rotation angle γ of the vertical rotation panel. 2. A tip of a vertical horizontal projection member integrally fixed to the vertical portion of the operating rod and a position of a radius of gyration R on a vertical connection plate integrally fixed to the vertical rotary panel are connected by a connecting pin. A shining part that is rotatably connected and integrally fixed to the operating rod shining part, and a connecting pin fixed to the tip of the shining part horizontal protruding member that is longer than the vertical part horizontal protruding member is integrally fixed to the shining part rotating panel. Slidingly engages with the long hole provided in the connecting plate, and sets the initial engagement position of the connecting pin on the long hole of the connecting plate of the ninja rotation panel to a position of a substantial turning radius r smaller than the turning radius R. 2. The windbreak / snow fence as claimed in claim 1, wherein the rotation angle of the vertical rotation panel is set to be (γ + α) with respect to the rotation angle γ of the vertical rotation panel. 3. The operating rod, the operating rod is moved up or down, the vertical portion rotating panel and the shin portion rotating panel are laid horizontally, respectively, and the operating rod is moved downward or upward to move the vertical portion. As operation rod restraining means for restraining the rotating panel and the shining portion rotating panel in two positions, that is, in a windproof and snowproof state, respectively, a horizontally extending operating rod receiving member is fixed to a lower portion of the vertical portion of the support column. 2. The wind and snow fence as claimed in claim 1, wherein engaging portions for engaging the operation rod are provided at least at two different positions in the horizontal direction of the operation rod receiving member. 4. A direction in which the upper portion of the vertical portion of the operation rod separates from the vertical portion of the support column when the operation rod is lowered or raised to bring the vertical rotation panel and the sneaker rotation panel into the windproof and snowproof state. 2. The windbreak / snow fence as claimed in claim 1, wherein an operation rod retainer that is engaged to restrain movement of the operation rod to reinforce the operation rod vertical portion is attached to the vertical column of the support column. 5. The windbreak and snow fence according to claim 1, wherein the rotation center axes of the vertical portion rotation panel and the shining portion rotation panel are eccentric from their respective centers of gravity. 6. A rotary lever protruding toward the operation rod side in the panel width direction is fixed to the vertical rotary panel at or near the lowermost stage as a vertical movement operation unit for vertically moving the operation rod. The windproof and snowproof fence according to Item 1.