JPH0616145Y2 - Locking mechanism for direct rotation and lifting door - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an exterior gate such as a building door, particularly a garage door.

[Conventional technology]

The conventional rotary lift door has no suitable locking means when the door is closed. Most of the work is done near the shaft attachment part of the support arm that supports the door, but there is a danger of damage due to the high load applied by the lever principle.In addition, when you go out, the lock from the outside of the door is within the reach of your hand. It is a defect beyond that. Providing the engaging portion of the lock between the side wall and the soil increases the number of steps, and the alignment is difficult, and it is also a pain for the operator to bend down near the soil.

[Problems to be Solved by the Invention] A technical problem of the present invention is to obtain a rotary elevator door that can be locked easily even from outside the estate when the door is closed with a simple configuration. However, the applicable rotary lift door is a type of direct-raising rotary lift door in which the attachment angle between the door and the support arm of the door is forcibly changed in accordance with the opening / closing operation of the door (for example, Japanese Patent Laid-Open No. 61-12).
No. 6287).

[Means for solving problems]

The structure of an embodiment of a lock mechanism for a rotary lift door according to the present invention will be described with reference to the drawings. In the vicinity of two side edges of the door 1, two support arms 21 are provided in a direction intersecting with the main surface of the door 1.
a, 22a, 21b, 22b, one end of each,
Each of the two support arms is pivotally connected by a pivot axis Xa · Xb parallel to each other front, and the other end of one of the two support arms 21a (22a) is pivotally connected by a pivot axis Xc parallel to the front, The support arm 21b (22b) is connected to the support arm 21b (22b).
21b (22a) of the support arm, the position of the support arm 21a (22a) can be moved along with the opening and closing of the door 1 along the longitudinal direction of (b).
The rotation angle of a) with respect to the pivot axis Xc pivotally attaching the other end is forcibly and uniquely associated with the attachment angle between the one end 21a (22a) of the support arm and the door 1. In the direct ascending / descending / descending door, the door 1 and at least one support arm 21a (22)
A rigid lock member R is removably engaged with (a).

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a lock mechanism for a direct ascending / descending / descending / descending / descending door according to the present invention in a closed door limit of the door 1 and the like. The diagonally lower ends of the connecting rods are axially attached to the columns 31 and 32 for supporting the pivotal axis Xc with respect to the ground surface in the vicinity of the pivotal axis Xc. Therefore, the support arm 2
If 1a and 22a rotate in the ascending direction with respect to the pivot axis Xc, the support arms 21b and 22b also rotate in the ascending direction around the pivot axis Xc through the door 1 and the supporting arms 21b and 22b rotate. Since the other ends of the small connecting rods pivotally supported by the rear ends of the arms 21b and 22b are axially attached to the columns 31 and 32, respectively, as described above, the small connecting rods are centered around the axial attachment points. As shown in FIG. 1, the small connecting rod is rotated clockwise with respect to the pivot axis Xc.
At this time, the upper end of the small connecting rod is forced to change the distance from the pivot axis Xc, so that the mounting angle between the door 1 and the support arms 21a and 22a is eventually
It is forcibly and uniquely determined by the rotation angle of the support arms 21a and 22a with respect to the pivot axis Xc, and the lower edge of the door 1 is substantially vertical rather than drawing an arcuate locus with respect to the pivot axis Xc. It is possible to obtain a rotary lift door that opens and closes in a straight pattern, that is, a direct lift rotary lift door. For the sake of simplicity, a stopper for preventing the pivoting stroke of the support arm from moving is not shown in the drawing when the door 1 is horizontal or vertical. Further, the second digit 2 and 1 of the reference numerals used in the present specification show the left and right of the support arm system, and some are not shown, but they appear the same as those of other systems.

Here, in the closed door limit, the door 1 and the one of the support arms 21
If a rigid lock member R is engaged with a (22a) and the door 1 and the support arm 21a (22a) are integrated with each other, the support arm 21a (22a) will pivot.
Therefore, it becomes impossible to rotate, and thus, the lock can be realized at the door-closing limit of the door 1. The engagement of the lock member R may be a type such as a latch lock, the structure is simple and the lock operation can be easily performed from the outside of the door 1 within a reachable range. Further, since the lock is a long distance from the pivot axis Xc, it can be said that there is little risk that the structural member for the lock is damaged.

[Operation] Since the present invention has the above-mentioned configuration, the operation thereof will be apparent from the description of the embodiment, but the description will be repeated below. When the door 1 is lifted from the closed door limit in the opening direction without the lock member R, the support arms 21a and 21b (22a and 22b) are also lifted, but the second arm 21b (22b) of the support arm. ) Has a structure in which the door 1 is forcibly pulled inward in response to the rotational displacement of the door 1, and one of the support arms 21a.
The attachment angle between 2a) and the door 1 should be rotationally displaced in a direction in which it decreases in the approximately first half rotational stroke of the door 1. However, in the present invention, since the lock member R is newly added so as to be detachably engaged between the door 1 and one or two of the support arms, one of the door 1 and the support arm is detached. The attachment angle with 21a and 22a is restricted, and as a result, the rotation of the support arm 21a and 22a with respect to the pivot axis Xc is also restricted.

[Effect of device]

According to the present invention, the lock-related structural member may be simple, and it is possible to obtain a lock mechanism for a direct ascending / descending / descending door which is easy to operate even from the outside of the door and is robust.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of a door to which an embodiment of a lock mechanism for a direct-rotation lift door according to the present invention is applied, and FIG. 2 is an enlarged side view of the vicinity of a lock member. 1 ... Doors 21a / 22a, 21b / 22b ... Support arm Xa / Xb / Xc ... Pivoting axis R ... Locking material

Claims (1)

[Scope of utility model registration request] 1. Near one of the two side edges of the door, one end of each of the two support arms in a direction intersecting with the main surface of the door is provided with a pivot axis parallel to each frontage. The second end of the support arm is pivotally attached to the other end of the support arm by a pivot axis parallel to the front, and the second end of the support arm is opened and closed along the longitudinal direction of the support arm. Accordingly, the rotation angle of the support arm with respect to the pivot axis that is positionally movable with respect to the one of the support arms and pivotally attaches the other end of the one of the support arms. In a direct ascending / descending / descending / descending door that is forcibly and uniquely associated with a mounting angle between the one and the door, a rigid lock member is provided between the door and at least one of the support arms in the closed door limit. A lock mechanism for a direct ascending / descending lift door, which is detachably engaged.