JP2559902Y2 - Open / close door holding structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for holding a door, and more particularly, to a structure for holding a door for automatically closing the door.

[0002]

2. Description of the Related Art Generally, as a door closer for automatically closing an opening / closing door, an elastic body such as a gas spring is attached to an upper portion of a door body which is attached to a wall body by a hinge so as to be opened and closed. A structure is known in which a connecting rod having one end attached thereto generates a reaction force, and the door body is automatically closed by the reaction force.

[0003]

The conventional door closer as described above has a structure in which a gas spring is mounted on the upper part of the door, so that it is obstructed when opening and closing.
In addition, not only does the weight of the door itself increase, but also the appearance is lost.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and comprises a fixed portion 4 attached to a wall 2 and a rotating portion 5 attached to a door 1. And a moving shaft 13 attached to the wall 2 so as to be parallel to the pin 6.
And a gas spring 17 attached to the moving shaft 13.
And an opening / closing door holding structure for moving the moving shaft 13 by the rotation force of the pin 6.

[0005]

[Operation] In the opening / closing door holding structure having such a configuration, when the door body 1 is opened, the moving shaft 1 is rotated by the rotational force of the pin 6.
3 is moved to generate a reaction force F on the gas spring 17. Therefore, the door body 1 can be automatically closed by the reaction force F. In particular, in the tilting door holding mechanism, since the moment generated by the weight of the tilting door and the force generated by the expansion and contraction of the gas spring can be offset, the opening and closing of the door body is significantly facilitated. be able to.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 6, an embodiment of the present invention will be described. FIG. 1 is a perspective view of a holding structure, and 1 is a door attached to a wall 2 by a hinge mechanism 3. The hinge mechanism 3 is configured by connecting a fixed portion 4 attached to the wall 2 and a rotating portion 5 attached to the door 1 with a pin 6, and a first bevel gear 7 is attached to the pin 6. ing. Reference numerals 8a and 8b denote bearings for rotatably supporting the pin 6, and are accommodated in the cover 9.

Reference numeral 10 denotes a rotating shaft arranged in a direction orthogonal to the pin 6, and is rotatably supported by bearings 11a and 11b.
A second bevel gear 11 meshing with the bevel gear 7 is mounted, and a pinion 12 is mounted on the other end.
Reference numeral 13 denotes a moving shaft that is movably supported by bearings 14a and 14b. A rack 15 that meshes with the pinion 12 is provided at one end of the moving shaft 13, and an arm 1 is provided at the other end.
6 is formed, and one end of a gas spring 17 is attached to the arm 16. The gas spring 17
Is attached to the wall 2, specifically, a mounting bracket 18 attached to the wall 2.

In the holding structure of the opening / closing door having the above structure,
When the door 1 is turned around the pin 6 in the direction of arrow P, that is, in the opening direction, the first bevel gear 7 also turns in the direction of arrow P, so that the sliding shaft 13 moves in the direction of arrow b. Slide. As a result, the gas spring 17 is compressed and a reaction force indicated by an arrow F acts, and this reaction force F becomes a force for automatically closing the door 1.

In this embodiment, the hinge 19 at the upper part of the door 1 uses a normal hinge mechanism. However, it is needless to say that the holding mechanism may be provided on the upper and lower sides or only on the upper part. I can do it. By the way, when the door 1a is attached to the inclined wall 2a as shown in FIG. 2, a great force is required when the door 1a is opened or closed because the weight W of the door 1a acts. That is, when viewed at the time of opening, the maximum force is required at the opening angle of 0 ° and the opening angle of 180 °, and becomes minimum at the opening angle of 90 °.
If this is shown by a moment curve, it will be as shown in FIG. Therefore, if such an inclined door 1a can be opened and closed with almost the same force, the opening and closing work becomes easy.

FIG. 4 shows another embodiment of a holding structure of an opening / closing door for facilitating such opening / closing operation, wherein two sets of holding devices A and B are provided vertically. It is. More specifically, 1a is provided on the wall 2a with the hinge mechanisms 3a, 3b.
The hinge mechanism 3a, 3
b is the fixed parts 4a, 4b attached to the wall 2a and the door 1
a with the rotating parts 5a, 5b attached to the pins 6a, 6b.
The first bevel gears 7a and 7b are attached to the pins 6a and 6b.

Reference numerals 8a to 8d denote bearings for rotatably supporting the pins 6a and 6b, and are mounted in the covers 9a and 9b. 10a and 10b are pins 6a and 6
b, the rotating shafts arranged in a direction orthogonal to b.
11d and one end of the first bevel gear 6a, 6
The second bevel gears 12a and 12b meshing with b are mounted, and the pinions 13a and 13b are mounted at the other end.

A moving shaft 14c is supported by the bearings 15a and 15b so as to be movable. Both ends of the moving shaft 14c have racks 16 meshed with the pinions 13a and 13b, respectively.
a and 16b are provided, and an arm 1 is provided at the center thereof.
7a, and a gas spring 1 is provided on the arm 17a.
One end of each of 8a and 18b is attached. The other ends of the gas springs 18a, 18b are attached to the wall 2a, specifically, to brackets of mounting fittings 19a, 19b attached to the wall 2a. Gas springs 18a, 18
The mounting position of b on the moving shaft 14c is 90 ° at the opening angle of the door body 1a at the center (point C in the drawing) and 0 ° at the opening angle.
The maximum reaction force F ₂ of the gas spring 18a in the case of (D point), also open when the angle is more than 180 ° (E point) attached to the reaction force F ₁ of the gas spring 18b is maximum I have. This relationship is shown in FIG.
The two reaction forces F ₁ and F ₂ are in a state where they cancel each other.

[0013] In the structure, now, gas spring 18a when the opening angle is in the 0 ° is the maximum reaction force F ₁ since the maximum compression state, as shown in FIG. 4 acts.
When the door 1a is to be opened in this state, the pin 6
When the door 1a is rotated in the direction of arrow G about the center a and 6b, the first bevel gears 7a and 7b rotate to move the moving shaft 1a.
4c is moved in the direction of arrow H.

[0014] the reaction force F ₁ of the gas spring 18a by this operation successively weakened, whereas, the reaction force F ₂ of the gas spring 18b is equally successively stronger in the center point C. Door body 1a
Is further opened, the reaction force F _{2 of the} gas spring 18b is increased.
Sequentially increase, and reaches a maximum at an opening angle of 180 °. Of course, when closing the door 1a, the gas spring 18 is closed.
a, the reaction force F ₁ and F ₂ acting on the 18b are opposite. FIG. 3 shows the change in moment due to the opening angle of the door.

In this case, the moment curve Dr due to the own weight of the door 1a, the moment curve Gs due to the gas springs 18a and 18b, and the combined moment curve GM
FIG. 6 shows that the resultant moment GM has a substantially constant value irrespective of the rotation angle of the door 1a, and the door 1a can be opened and closed lightly regardless of the opening angle. it can.

In these two embodiments, the doors 1, 1a
Although a gear mechanism is used as a means for transmitting the rotational force of the pins 6, 6a, 6b generated by rotation to the moving shafts 13, 14c, it is obvious that other means can be used.

[0017]

According to the present invention, the opening / closing door holding structure according to the present invention is configured such that a fixed portion attached to the wall and a rotating portion attached to the door are connected by a pin, and the hinge mechanism is parallel to the pin. The moving shaft is configured to be moved by the rotational force of a moving shaft attached to a wall, a gas spring, and the pin.

Therefore, since the gas spring for automatically closing the door is attached to the wall, not only the weight of the door is reduced, but also the appearance can be improved by incorporating the door into the wall as required. be able to. Furthermore, if two sets of holding devices are used, the opening force of the inclined door can be made substantially uniform, so that the opening / closing operation can be facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a holding structure of an opening / closing door according to the present invention.

FIG. 2 is a perspective view schematically showing an inclined door.

FIG. 3 is a moment diagram of an inclined door.

FIG. 4 is a perspective view showing a holding structure of another type of the inclined door.

FIG. 5 is a reaction force diagram of the gas spring.

FIG. 6 is a moment curve diagram.

[Explanation of symbols]

1, 1a Door body 2, 2a Wall body 3, 3a, 3b Hinge mechanism 4, 4a, 4b
Fixed part 5,5a, 5b Rotating part 6,6a, 6b
Pins 7, 7a, 7b First bevel gears 8a to 8d, 11a to 11d, 14, 15a to 15d
Bearing 9, 9a, 9b Cover 10, 10a, 1
0b Rotary shaft 12 13a, 13b Pinion 11, 12a, 12b Second bevel gear 13, 14c Moving shaft 15, 16a, 1
6b Rack 16, 17a Arm 17, 18a, 1
8b Gas spring 18, 19a, 19b Mounting bracket

Claims (1)

(57) [Scope of request for utility model registration] A hinge mechanism for connecting a fixed part attached to the wall body and a rotating part attached to the door body with a pin, a moving shaft attached to the wall body so as to be parallel to the pin, A gas spring attached to the moving shaft, and a holding structure of an opening / closing door configured to move the moving shaft by a rotational force of the pin.