JPH042316Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a rotating lift door used in garages facing the road, etc. Specifically, the invention relates to a so-called flip-up gate that is closed when the door is closed. This invention relates to a rotating lift door that can prevent a rotating lift door mechanism from being destroyed when an excessive pushing down force is applied to the door body due to a child riding on the main body part.

[Prior Art] A rotating lift door is a door that opens by rotating the door body upward by approximately 90 degrees, and has two pivot points provided on a support, and one end of which is pivoted on these two pivot points. It has two support arms that are rotatable in a plane that intersects the rotation axis, and straddles between the open end sides of these two support arms in the direction that intersects the two support arms. A decorative panel (door body) is provided. The support arm is biased by a spring to cancel out the gravity on the rotating door side, thereby opening and closing the door with a light actuation force.

The stopper for opening and closing this type of rotating elevator door is made integral with the ground surface for any part of the door body or a rotating part such as a support arm that serves as a radius vector for the rotation of the door body. This is done by bringing the two members into contact with each other, and the upper and lower limits of rotation are determined by this stopper.

[Problem to be solved] In the case of a rotating lift door whose rotation limit is determined by a stopper as described above, the support arm etc. may bend when a child stands on the door body in the closed state. Accidents of breakage may occur.

In order to avoid this, conventional methods have been to place the lower part of the door body in contact with a stone set on the ground, or to extend a rod-shaped member integrally with the lower part of the door and place the tip of it on the ground. or in contact with it.

However, in the former case, there is a problem that the platform stone occupies a part of the passage and gets in the way, and in the latter case, when the door is opened, the member extending from the bottom of the door body It is dangerous because it sticks out onto the road.

This invention solves the problems of the conventional technology, and even if a strong downward external force is applied to the door body due to a child carelessly stepping on the door body, it will not cause breakage of various parts. It is an object of the present invention to provide a rotating lift door that can avoid the above problems and prevent its damage.

[Means for Solving the Problems] The structure of the rotating lift door of this invention to achieve the above purpose has a rotation center on the lower side of the door body in an upright state, and a rotation surface of the arm. When the door body rotates due to its own weight in a plane parallel to the door body, and when the door body attempts to rotate further toward the ground than the closed state, the door body side that is below the center of rotation or A member that is integrated with the door body side is in contact with the side opposite to the support between the rotation center and the tip side, and the tip side approaches or reaches the ground surface when the door is closed. It is equipped with a restraining piece that is maintained in an almost vertical position.

[Function] If a restraining piece is provided at the bottom of the door that rotates under its own weight relative to the door body, the restraining piece will always be maintained in an almost vertical direction even when the door is opened. There is almost no need to protrude into the road. Moreover, when the door is closed, the restraining piece is maintained in a nearly vertical direction, and is in a state where it is in contact with, or can be brought into contact with, the side opposite to the side where the support is located, so that Due to this action, it is possible to prevent the door from rotating when a load is applied to the door that would cause it to rotate downward from the horizontal.

For example, if a child climbs on the door and the door tries to rotate downward and toward the inside of the gate installation area around the fulcrum of the pillar, at this time, the road outside the gate installation area When the lower position from the center of rotation of the restraining piece is brought into contact with the door body side from the side, and the restraining piece is rotated toward the inside of the gate installation area, the center of rotation and the position of contact are 2.
Since it is fixed at a point, it tries to rotate along with the door body toward the inside of the gate installation area.
However, since the distal end side of the deterrent piece is in contact with the ground surface at this time, the distal end side receives a frictional force from the ground surface side and receives a reaction force that causes the distal end side to rotate toward the road side outside the gate installation area. As a result, a force acts on the restraining piece to rotate it in the opposite direction. However, since its rotation is blocked at the abutting position, it is fixed in its initial almost vertical state, and the rotational force generated when a child steps on the door is transmitted from the restraining piece to the ground side, causing a reaction from the ground surface. As a result, rotation of the door body is prevented by the restraining piece.

[Example] Hereinafter, an example of this invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of the rotating lift door of this invention, and FIG. 2 is an explanatory diagram of the relationship between the door body and the restraining piece, centering on the restraining piece.

In FIG. 1, S indicates the ground surface of an open-air parking lot, etc., and is formed by, for example, leveled soil or concrete poured on-site.

Supports 31 and 32 are erected on the ground surface S with their lower portions buried at predetermined intervals corresponding to the width of the door 1, which is the door main body. The axis X passing through the pivot points 41 and 42 provided on the upper part
This axis X becomes the center of rotation of the rotary lift door, which is formed as a straight line where the horizontal plane and the vertical plane at this height intersect.

The two support arms 21 and 22 have their one ends 21a and 22a pivoted on two pivot points 41 and 42 arranged along the axis X, and are rotatable in a plane intersecting the axis X. It has become freely possible. The door 1 (door body) is fixed between the open ends 21b and 22b of these two support arms 21 and 22 in a direction intersecting these two support arms 21 and 22.

5 indicates the door 1 and the two support arms 21, 2;
FIG. 1 shows a state in which the door is closed. Moreover, the state shown by the two-dot chain line is the state in which the door is completely opened to the upper limit.

In this embodiment, screws 11a and 12a are provided below both side surfaces 11 and 12 of the door 1, so that the restraining piece 6 can be rotated freely relative to the door 1.
1,62 are attached.

FIG. 2a shows this installed state.
As shown in FIG.
are rotatably attached to the side surfaces 11, 12 of the door, and the restraining pieces 61, 62 have weight portions 61c,
62c is provided on the side corresponding to the inner side of the gate installation area, which is the side of the pillars 31 and 32. In addition, the numbers shown in brackets in the figure represent corresponding members on the side surface 12 side.

As for the attachment method, first, the screws 11a and 12a are screwed into the lower positions of both side surfaces 11 and 12 of the door 1, thereby fixing the screws to the side surfaces 11 and 12, for example. However, at this time, the screws 11a and 12a are
As shown in Figure 2a, a portion protrudes from the side. Next, the screws 11 screwed into the side surfaces 11 and 12
The restraining pieces 61, so that a, 12a become the rotation center,
One end 61a, 62a of 62 is connected to case member 91, 9
2, and insert the screws 11a, 12a screwed into the holes 91, 92 into the holes formed at the approximate centers of the case members 91, 92 through the heads of the screws 11a, 12a screwed onto the door 1 side, and fit loosely into the shaft portions.

Note that normally, the diameter of the head of a screw is slightly larger than the diameter of the shaft, so case members 91 and 92 with holes slightly larger than the diameter of the head are attached to the screw head and attached to the shaft. Once positioned, since the diameter of the shaft portion is small, the restraining pieces 61 and 62 will inevitably be loosely fitted. In this way, the restraining pieces 61 and 62 are attached to the screw 11.
Fig. 2a shows the state in which it is loosely fitted into parts a and 12a.

In this way, the restraining pieces 6 are attached to the case members 91 and 92.
The ends 61a, 62a of 1, 62 are fitted into sliding contact with the case members 91, 92, and the screws 11a, 12
By attaching the restraining pieces 61, 62 to a, the length from the screw mounting position to the tips of the restraining pieces 61, 62 can be adjusted. For example, by strongly hitting the upper sides of the deterrent pieces 61, 62 with a hammer or the like, the tips of the deterrence pieces 61, 62 can be easily adjusted to reach the ground surface S, or to be slightly in front of the ground surface S. .

Note that 81 and 82 in FIG. 1 are stoppers that limit the rotation stroke of the support arms 21 and 22, and a balancer and the like for reducing the weight of the door 1 are not shown for the sake of clarity. Furthermore, the first digit 2 and 1 of the two-digit code used in this specification indicate the left and right sides of the support arm system, respectively, and although some are not shown in the drawings, they represent other systems. appears identical to that of

Now, as shown in FIG. 2a, the restraining pieces 61, 6
2 has weight portions 61c and 62c provided toward the inside of the gate installation area. As a result, its center of gravity G is the center of rotation of the screws 11a, 1
It is closer to the pillar 31 side inside the gate installation area with respect to a perpendicular line drawn vertically from the fixed center of 2a. Moreover, the restraining pieces 61 and 62 are connected to the screws 11a,
Since it is rotatable around the door 12a, its center of gravity G acts to always position the restraining pieces 61, 62 in a substantially vertical direction regardless of the position of the door 1. Tilt it toward the road outside the gate installation area.

However, as shown in FIG. 2a, the door 1 is provided with locking protrusions 71 and 72. Therefore, when the door is in the closed state, the distal ends 61d and 62d of the restraining pieces 61 and 62 generate a moment toward the road side with which the door 1 is in contact due to the action of the center of gravity G, and the locking protrusions 71 and It is maintained in a substantially vertical state while being in contact with 72. As a result, when the door is closed, the restraining pieces 61 and 62 are in a substantially vertical direction, and their tip sides 61d and 62d touch the ground surface S, or
It is placed close to the ground surface S.

By the way, the direction in which the screws 11a and 12a are screwed in, which determines the rotation center of the restraining pieces 61 and 62, is the direction in which the direction of the axis in which the screws are screwed in is along the main surface of the door 1 (the front or back side of the door), in other words. , it is sufficient that the axial direction of the screw is parallel to the main surface of the door 1. Thereby, the rotation of the restraining pieces 61 and 62 with respect to the door 1 is performed within a plane parallel to the rotation plane of the arms 21 and 22.

Next, the action of the restraining piece 61 will be explained.
The same applies to the restraining piece 62, so a description thereof will be omitted. Further, in order to clarify the operation, the following description will be made assuming that the tip of the restraining piece 61 is in contact with the ground surface S. In reality, the tip of the restraining piece 61 does not necessarily have to be in contact with the ground surface S since the door 1 rotates downward when a child gets on the vehicle. This is because if they are close to each other, door 1 will be lowered a little and touch the ground surface.

As shown in the figure, the distal end side 61d of the restraining piece 61 is in contact with the ground surface S when the door is in the closed state. The door 1 then rotates around the pivot point 41 of the support column 31. At this time, the deterrent piece 6 in contact with the ground surface S
1 is fixed at two points: the position of the screw 11a, which is the center of rotation, and the position where the locking protrusion 71 comes into contact, and in FIG. 2A, clockwise rotation is prevented. This is the state in which the door is closed.

If we consider the case where a child or the like gets on door 1 in such a state, first,
A force F ₁ acts on the shaft centering on the shaft fulcrum 41 at the lower side and toward the inner side of the gate installation area.

The restraining piece 61 is in contact with the locking protrusion 71 on the opposite side of the pillar (the road side outside the gate installation area) at a position below the center of rotation, so that the door 1 side is in contact with the pillar 3.
When the gate attempts to rotate toward the inner side of the gate installation area around the pivot point 41 of 1, it receives a force F ₁ from the road side outside the gate installation area by the locking protrusion 71, and at this time comes into contact with the center of rotation. The restraining piece 61, which is fixed at two points and does not rotate clockwise, attempts to rotate toward the inside of the gate installation area together with the door ₁ due to the rotational force F1. As a result, the distal end sides 61d and 62d of the restraining piece 61, which is in a fixed state, are subjected to a reaction force due to the frictional force _F2 from the ground surface S, which attempts to rotate it toward the road side outside the gate installation area with respect to the rotation center. . but,
Since its rotation is prevented by the locking protrusion 71, it is strongly and reliably maintained in its initial almost vertical state and is fixed in that state. Therefore, the rotational force applied to the door 1 when a child steps on the door is transmitted to the ground surface S side via the restraining piece 61, and the restraining piece 61 prevents the door 1 from rotating in a manner that would cause damage. . Moreover, when the door is opened, this deterrent piece 61
As shown by the two-dot chain line, it is almost vertical and hardly protrudes outside the gate installation area (towards the road).

In addition, since the restraining pieces 61 and 62 are located at approximately the maximum radius of the rotating part 5 with respect to the axis When a moment is caused by an external force that pulls it down or rotates it, a strong cross-resistance force is generated.

Locking protrusions 71 and 72 for restraining pieces 61 and 62
Although this only has the function of blocking the rotation of the restraining pieces 61 and 62 in one direction (the direction of arrow a), this is sufficient. This is because when the door 1 is closed due to the action of the center of gravity G of the restraining pieces 61, 62, the restraining pieces 61, 62 are in a substantially vertical state, and the above-mentioned effect can be obtained. Therefore, when the door is closed, the locking protrusion 7
1 and 72 and the restraining pieces 61 and 62 are not completely in contact with each other, and even if there is a slight gap, the door 1 will rotate downward when a child gets on the vehicle, so the locking protrusions The restraining pieces 61, 62 are brought into contact with the restraining pieces 71, 72, and the locking protrusions 71, 72 can function to prevent rotation of the restraining pieces 61, 62 in one direction (direction of arrow a).

By the way, in the case of the rotary lift door having the above configuration, the door 1 is moved by the stoppers 81 and 82 when the door is closed.
The lower limit of the door closing direction (lowering direction) is set. However, due to some errors during construction, it may be necessary to correct the closing position of the door 1 slightly upward. In such a case, the restraining pieces 61 and 62 should be placed on the side 1 of the door 1.
1 and 12, the tips of the restraining pieces 61 and 62 can be brought into contact with the ground surface S when the door 1 is raised.
The closed position of the door 1 can be corrected upward.
The correction deviation amount at this time is determined by the attachment length of the restraining pieces 61, 62 to the screws 11a, 12a. This installation length is determined by the case member 9 attached to the guide grooves 61b, 62b and the screws 11a, 12a.
In addition to the method by adjusting the sliding contact state with the restraining pieces 61 and 62 (FIG. 2 a), for example,
This can be adjusted by using a multi-stage method (FIG. 2b). Furthermore, even if a vertical groove is provided on the side surface 11 of the door 1 and the screws 11a and 12a are fixed at arbitrary positions in the vertical groove, the restraining pieces 61 and 6
2 lengths can be adjusted. In addition, in such an adjustment, if the adjustment length is made to be slightly longer than the reach distance to the ground surface S in the closed state, the stoppers 81 and 8 as the lower limit of the door 1
2 may temporarily cease to function as a stopper, but the stoppers 81 and 82 can function as secondary stoppers in the event of structural damage to the restraining pieces 61 and 62. .

As explained above, if the restraining piece is divided into two parts (two or more are possible) in the upper and lower (transverse direction) and a coil spring is inserted between them to connect the upper and lower divided parts, the coil spring A cushioning effect can be obtained by the amount of compression, and since the upper and lower parts are in close contact with each other in the compressed state, the upper and lower parts of the divided parts come into contact and exhibit rigidity, improving safety. .

[Effects of the invention] According to this invention, if a restraining piece that rotates under its own weight relative to the door body is provided at the bottom of the door, the restraining piece will always remain in an approximately vertical direction even when the door is opened. In order to be maintained, it hardly needs to protrude to the road side. Moreover, when the door is closed, the restraining piece is designed to be maintained in an almost vertical direction, and is in a state where it is in contact with or can be brought into contact with the side opposite to the side where the support is located, so that it is horizontal to the door. It is possible to prevent the door from rotating when a load that causes it to rotate further downward is applied.

Therefore, even if a strong downward external force is applied to the door body, such as when a child accidentally steps on the door and causes the door to rotate downwards, the restraining piece transmits that force to the ground surface, and the ground surface absorbs the force. , and its rotation is prevented. Therefore, breakage of various members can be avoided and damage to the rotating lift door can be prevented. Furthermore, when the door is opened, this restraining piece becomes almost vertical and hardly protrudes outside the gate installation area, so it is safe.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the rotating lift door of this invention, and FIG. 2 is an explanatory diagram of the relationship between the door body and the restraining piece, centering on the restraining piece. 1... Door (veneer board), 11, 12... Side, 1
1a, 11b... Screw, 21, 22... Support arm, 31, 32... Support column, 41, 42... Axis fulcrum, 5... Rotating part, 61, 62... Suppressing piece, 7
1, 72... Locking projection piece, 81, 82... Stopper.

Claims (1)

[Scope of utility model registration request] A door body rotatably attached to a post erected on the ground via an arm, and a biasing member that acts directly or indirectly on the arm to bias the door body in an anti-gravity direction. and the door is opened by rotating the door body in a direction that does not make contact with the ground surface, and the door is opened in a state where the door body stands up against the ground surface and is adjacent to the ground surface at a predetermined interval. In the rotating elevator door to be closed, the rotating lift door has a rotation center below the door body in the upright state, and rotates with its own weight with respect to the door body in a plane parallel to the rotation plane of the arm, When the door body attempts to rotate further toward the ground side than the closed state of the door, the rotation center is located on the door body side that is below the rotation center or on a member that is integrated with the door body side. and the tip side are in contact with each other at a position opposite to the side where the support is located, and when the door is closed, the tip side is maintained in a substantially vertical state with a length close to or reaching the ground surface. A rotating lift door characterized by being equipped with a restraining piece.