JPH0513916Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a garage door provided at the entrance/exit of a garage.

[Background technology] Flip-up garage doors have been around since 1977.
It is known from Publication No. 53507. This special public service 1977
The conventional example shown in Publication No. 53507 is
As shown in the figure, since the spring 4' is attached to the arm 2 whose one end is fixed to the door body 3, the spring 4' is located on the rotation locus of the arm 2 fixed to the door body 3, and the spring 4' Arm 2 is fixed to door body 3
At the same time, the spring 4' is exposed to the outside, and there is a problem in that it is impossible to create a structure that prevents the spring 4' from being exposed.
Furthermore, in the case of a vertically long spring 4' as shown in Fig. 5, a large space is required for arranging the spring 4'.
There was a problem that the spring 4' portion could not be made compact. In addition, in the above conventional example, the door body 3
When closing the door body 3 against the spring force of the spring 4'
However, there was a problem in that if it was closed too forcefully, the rotation movement would be too fast and could be dangerous.

[Purpose of the invention] The present invention was devised in view of the above points, and its purpose is to use a mainspring spring so that there is no need to position the spring on the rotation trajectory of the arm. A garage that can be covered with a case to prevent exposure to the outside, can be configured compactly, and even if the door is operated to close forcefully, the door rotates slowly by slowing down the rotation speed. There is a door to offer.

[Disclosure of the invention] In the garage door of the invention, the base of the arm 2 is attached to the rotating shaft 1, the tip of the arm 2 is connected to the door body 3, and the door body 3 is closed with the door body 3 facing vertically. In a garage door that is opened with the door body 3 facing upward and horizontally, the door body 3 is attached to the rotation axis 1.
Mainspring spring 4 tries to rotate in the opening direction.
A screw hole 9 is provided in the rising piece 8 of the outer end of the mainspring spring 4.
A long hole 10 is provided at a position shifted inward from the case 5, and a fixing screw 12 inserted through a hole 11 provided in the side wall of the case 5 is inserted through the long hole 10 and screwed into a nut 13.
An insertion hole 14 is provided in the side wall of the case 5 facing the rising piece 8, the adjustment screw 15 inserted through the insertion hole 14 is screwed into the screw hole 9 of the rising piece 8, and the auxiliary arm 20 is attached to the rotating shaft 1, and the auxiliary arm 20 is attached to the rotating shaft 1. arm 20
The brake body 21 is brought into elastic contact with the brake body 21, and with this configuration, the above-mentioned object of the present invention is achieved. That is, in the case of the present invention, by attaching the mainspring spring 4 to the rotating shaft 1, the rotating shaft 1 can be directly rotated by the mainspring spring 4, and the rotation of the arm 2 can be performed as in the conventional case where the arm 2 is rotated by a spring. Since the spring is not located on the trajectory, the mainspring spring 4 can be covered with a case or the like without being disturbed by the rotation of the arm 2. Furthermore, by using the mainspring spring 4 to directly rotate the rotating shaft 1, the device can be made more compact.
Furthermore, by attaching the auxiliary arm 20 to the rotating shaft 1 and bringing the brake body 21 into elastic contact with the auxiliary arm 20, even if the door body 3 is operated to close with force, the rotation speed of the door body 3 is slowed down and the door body 3 is closed slowly. It is designed to rotate. In addition, the inner end of the mainspring spring 4 is connected to the rotating shaft 1, and a screw hole 9 is provided in the rising piece 8 of the outer end of the mainspring spring 4, and a long hole 10 is provided at a position shifted inward from the screw hole 9. established,
The fixing screw 12 inserted through the hole 11 provided in the side wall of the case 5 is inserted into the elongated hole 10 and screwed into the nut 13. An insertion hole 14 is provided in the side wall of the case 5 facing the rising piece 8. By screwing the adjusting screw 15 inserted into the screw hole 9 of the rising piece 8, the spring force of the mainspring spring 4 can be easily adjusted by rotating the adjusting screw 15 with the fixing screw 12 loosened. , door body 3 can be installed easily on site.
The opening/closing operation can be adjusted to the optimum condition.
In addition, after adjustment, by tightening and fixing the fixing screw 12 again, the mainspring spring 4, whose spring force has been adjusted, is held in the predetermined state adjusted by both the fixing screw 12 and the adjusting screw 15. Even if you try to rotate the adjusting screw 15 by mistake, the fixing screw 1
2 makes it possible to prevent the state of the mainspring spring 4 from changing by mistake unless the fixing screw 12 is loosened.

The present invention will be explained in detail below with reference to Examples. Case 5
A rotating shaft 1 is rotatably attached to the housing, and in the embodiment shown in the drawings, a case 5 is constructed by fitting a front case body 6 and a back case body 7 together. Case 5
There is a mainspring spring 4 inside. A rising piece 8 is provided at the outer peripheral end of the mainspring spring 4, a screw hole 9 is provided in this rising piece 8, and a long hole 10 is provided at a position shifted inward from the rising piece 8. A hole 11 is drilled in the side wall of the case 5, and a fixing screw 12 is inserted through the hole 11, and the fixing screw 12 is inserted into the elongated hole 10 of the mainspring spring 4.
The outer circumferential end of the mainspring spring 4 is fixed to the case 5 by inserting the main spring 4 through the nut 13 and screwing it into the nut 13. An insertion hole 14 is bored in the side wall of the case 5 facing the rising piece 8, and an adjusting screw 15 is inserted through the insertion hole 14 and screwed into the screw hole 9 of the rising piece 8. With the fixing screw 12 loosened, the adjustment screw 15 is rotated to adjust the spring strength of the mainspring spring 4, and when the adjustment is completed, the fixing screw 12 is tightened and fixed. The inner end of the mainspring spring 4 is attached to the rotating shaft 1. The base of an arm 2 is attached to the rotating shaft 1, and a door body 3 is attached to the tip of the arm 2. The mainspring spring 4 applies a spring force to the rotating shaft 1 to rotate the door body 3 in the opening direction.
An auxiliary arm 20 is provided protruding from the rotating shaft 1, and a roller 22 is rotatably attached to the tip of the auxiliary arm 20. A brake body 21 is housed inside the case 5, and this brake body 21 is in elastic contact with a roller 22 attached to the tip of the auxiliary arm 20. In the embodiment shown in FIG. 2, the brake body 21 has an arc shape and has one end 23 fixed to the case 5.
The other end is a free end. This brake body 2
1 is elastically biased inward by a spring body 24. Further, a stepped portion 25 is provided at the end of the brake body 21 that is the free end. The garage door configured as described above is closed with the door body 3 facing vertically, and opened with the door body 3 facing upwards and horizontally. However, there is a stopper for closing to prevent the door body 3 from rotating further in the closing direction when it is oriented vertically, and a stopper for preventing it from rotating further in the opening direction when the door body 3 is oriented horizontally. A stopper for opening is provided to prevent rotation. Figures 1 and 3
In the embodiment shown in the figure, columns 16 are erected on both sides of the site that will become a garage, and a case 5 is attached to the top of this column 16, so that the case 5 becomes a part of the column 16. However, the case 5 may be attached to a building wall, fence, or other structure without using the support 16.

Next, the operation of the garage door constructed as described above will be explained. The closed state is when the door body 3 faces vertically as shown by the solid line in FIG. 1, and the arm 2 hits the closing stopper and does not rotate any further. At this time, a force is acting on the mainspring spring 4 in the direction opposite to the ground, but the door body 3
Since the rotational moment applied to the rotating parts due to the weight of the arm 2 and the like is greater than the rotational moment caused by the mainspring spring 4 that tries to rotate the door body 3 in the closing direction, the closing state is maintained by hitting the closing stopper. It is something that exists. When you hold the door body 3 in your hand and push it upward, the door body 3 swings upward due to the pushing force and the spring force of the main spring 4.
It comes to a stop when it hits the stopper for opening at the set stop position. At this time, door body 3
Since the rotational moment that tries to rotate the door body 3 in the closing direction due to The door body 3 is designed not to rotate in the closing direction. Further, when closing the door body 3, the door body 3 is held in the hand and rotated in the closing direction against the spring force of the mainspring spring 4, so that it closes and stops against the closing stopper. By the way, by opening and closing the door body 3, the rotation axis 1
When the door body 3 rotates, the roller 22 at the tip of the auxiliary arm 20 provided on the rotating shaft 1 rotates while being in elastic contact with the brake body 21, and as a result, even if the door body 3 is attempted to be rotated vigorously, the brake is not activated. state, and the door body 3 will rotate slowly. By the way, in the closed state, the rollers 22 fall into the stepped portion 25 of the brake body 21, and in order to open the door body 3, the stepped portion 25 is positioned.
The door body 3 will not rotate in the opening direction unless a force is applied to overcome this, and as a result, the door body 3 is prevented from unexpectedly rotating when the stepped portion 25 is in the closed state.
Note that the arc-shaped brake body 21 and the auxiliary arm 20
If the positional relationship of the rotation locus of the tip (that is, the roller 22) is set as shown in Fig. 4, the brake body 2
1 is such that the brake can be applied gradually in the rotation angle range approximately in the latter half of closing the door body 3 (that is, the angle range indicated by θ in FIG. 3). Furthermore, in the embodiment shown in FIG. 2, the brake body 21 is urged inward by the spring material 25 and is caused to spring against the auxiliary arm 20, but the brake body 21 itself may be made of a spring material. be.

[Effect of the invention] In the present invention, as described above, the base of the arm is attached to the rotating shaft, and the tip of the arm is connected to the door body, and when the door body is closed with the door body oriented vertically, For garage doors that are opened with the door facing upwards and horizontally, a mainspring spring is attached to the rotating shaft to rotate the door in the opening direction, so the rotating shaft can be directly rotated by the mainspring spring. As a result, unlike conventional models in which the arm is rotated by a spring, the spring is not positioned on the arm's rotation locus, and the mainspring can be used in cases such as cases without being hindered by the rotation of the arm. It is now possible to cover it with
Furthermore, in the present invention, since the rotating shaft is directly rotated using a mainspring spring, the spring portion can be arranged compactly near the rotating shaft. Furthermore, by attaching an auxiliary arm to the rotating shaft and having the brake body come into elastic contact with the auxiliary arm, even if the door body is operated to close with force, the rotation speed of the door body can be reduced and the door body can be rotated slowly. As a result, when closing the door body, it is safe because there is no risk of dangerous situations occurring due to rapid closing of the door body, and moreover, the inner end of the mainspring is connected to the rotating shaft,
A screw hole is provided in the rising piece at the outer end of the mainspring spring, and a long hole is also provided at a position shifted inward from the screw hole, and the fixing screw inserted through the hole in the side wall of the case is inserted through the long hole and the nut is inserted. An insertion hole is provided in the side wall of the case facing the rising piece, and the adjustment screw inserted through the insertion hole is screwed into the screw hole of the rising piece. The spring force of the mainspring can be easily adjusted by rotating the main spring, and the opening/closing operation of the door body can be adjusted to the optimal condition with simple operations on site.Furthermore, after adjustment, tighten the fixing screw again to fix it. By doing this, the mainspring spring whose spring force has been adjusted is held in a predetermined state adjusted by both the fixing screw and the adjusting screw, and even if you accidentally try to turn the adjusting screw after adjustment, it will not be fixed by the presence of the fixing screw. This will prevent the state of the mainspring from changing accidentally unless the screw is loosened.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing an embodiment of the present invention;
Figure 2 is an enlarged exploded perspective view showing the attachment part of the mainspring as above, Figure 3 is an overall side view of the same as above,
Fig. 4 is an explanatory diagram showing the positional relationship between the auxiliary arm and the brake body, and Fig. 5 is a side view showing the conventional example, in which 1 is the rotating shaft, 2 is the arm, 3 is the door body, and 4 is the main spring. It is.

Claims (1)

[Scope of utility model registration request] A garage in which the base of the arm is attached to the rotating shaft and the tip of the arm is connected to the door body, and the garage is closed with the door body facing vertically and opened with the door body facing horizontally above. In the door, the inner end of the mainspring that rotates the door body in the opening direction is connected to the rotating shaft, and a screw hole is provided in the rising piece of the outer end of the mainspring spring, and the inner end is shifted inward from the screw hole. A fixing screw inserted through the hole in the side wall of the case is inserted into the long hole and screwed into the nut.An insertion hole is provided in the side wall of the case opposite to the rising piece, and the fixing screw is inserted through the hole in the side wall of the case. A garage door is constructed by screwing the inserted adjustment screw into the screw hole of the rising piece, attaching an auxiliary arm to the rotating shaft, and bringing the brake body into elastic contact with the auxiliary arm.