JPS6016222Y2 - Folding door refraction device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bending device that allows two adjacent door bodies to bend smoothly without applying any particular force when a folding door is opened.

When folding a bifurcated folding door that is connected so as to be bendable in a folding screen shape and storing it in the storage section, the connection that should protrude from the travel guide section 1 toward the outdoor side is shown in Fig. 1. In order to make parts A9 and B protrude, a protruding engagement surface 3 is formed at the boundary between the traveling guide part 1 and the storage part 2, and the connecting part A is formed on this.

The folding door can be folded by sequentially pressing B and B, or as shown in Fig. 3, the adjacent door bodies 4 and 5 can be folded at the connection part A and B which should protrude to the outside. The coil spring 6 has a spring force in the direction of always opening,
Attach the hook between both door bodies 4 and 5, and connect the relevant connection part 9.
As shown in Fig. 2, when B and F reach the predetermined position 2 of the traveling guide part 1, the elastic biasing force of the coil spring 6, which was suppressed by traveling in the groove of the guide part, is released. It is considered that the door bodies 4 and 5 can be folded by the action of this spring as shown in FIGS. 4 and 5.

The present invention uses such a coil spring to bend and open the folding door, but when the coil spring 6 is attached as shown in Fig. 3, that is, the leg body connected to the coil spring 6 is When the tips of the coil springs 7 and 8 are connected to the end faces of the door bodies 4 and 5, the legs 7 and 8 of the coil spring 6 will also rotate nearly 90 degrees as the door bodies 4 and 5 rotate by 90 degrees, causing the door to become a substation. It is clear that the coil spring 6 is significantly fatigued by opening and closing the bodies 4 and 5, which poses a problem in durability.

Therefore, in the present invention, when opening the door body, if the door is bent even slightly at first, the opening operation can be smoothly performed by applying a slight force. 5 is opened not entirely by the elastic force of the coil spring 6 as described above, but by bending the linearly adjacent door body in the closed state by a small angle by the coil spring, and then releasing the coil spring. The purpose is to reduce the burden on the coil spring during use and improve its service life.

That is, in the present invention, a coil spring provided with two legs having an arbitrary opening angle is wound around a bending central axis provided at the connecting portion of adjacent folding door doors, and the above-mentioned door An arc-shaped elongated hole centered on the central shaft portion provided with the leg release guide portion is provided on each connecting portion side of the body, and the leg of the coil spring is further opened at the inner end of the elongated hole. It is an object of the present invention to provide a bending device for a folding door, which is characterized by being press-locked in a resiliently biased state.

Hereinafter, the present invention will be explained based on illustrated embodiments.
Figures 6 to 10 show the steps taken when folding and opening the folding door.
This shows a bent portion projecting toward the outside of the room, and the folding door bodies 4 and 5 are connected by a hinge A attached to the upper end surface, respectively.

This hinge A consists of a fixed part 10.10a attached to the upper end surface of each door body 4, 5, and pivot supports 12, 12a mutually pivotally connected by a central axis 11 for bending. As shown in FIG. 6, each shaft support 12, 12a is
The fixing portions 10.degree. 10a are connected to the fixing portions 10.degree. 10a so as to protrude toward the indoor side of the door body 4.degree.5 in the closed state, and are pivoted so as to overlap each other vertically.

Further, a coil spring 6 is wound around the upwardly protruding portion of the central axis for refraction 11, and as shown in FIG. , each leg 7, 8 is opened at a large angle as shown in FIG.

This leg opening angle is set with the hope that if the closed door bodies 4 and 5 are bent even slightly, they can be folded easily and easily by hand, and the larger this leg opening angle is, the greater the , the movable range of each leg body 7, 8 itself is small, and the load applied to the coil spring 6 is reduced, so its durability is improved, but the leg opening angle is determined by the bending central axis around which the coil spring 6 is wound. 11 and the positions at which the legs 7 and 8 are locked to the doors 4 and 5, etc., as appropriate.

Each of the legs 7 and 8 of the coil spring 6 has a fixing portion 1 of the hinge.
The fixing part 10.10a has a leg body 7 centered around the central axis 11.
, 8 are provided with elongated holes 16, 16a for releasing the movement of the legs, which have an arcuate shape and are formed along the locus drawn by the tips of the legs.
The legs 7, 8 are fitted into the elongated holes 16, 16a.

The legs 7 and 8 are fitted in such a way that the elastic force of the coil spring 6 acts in the direction of opening the closed door bodies 4 and 5, so that the legs 7 at the open angle in FIG. , 8 are further opened in the direction of the arrow, and with the elastic force of the coil spring 6 applied to the legs 7, 8, they are inserted into the respective elongated holes 16°i6a of the door bodies 4, 5 in the closed state. , the legs 7 and 8 are located at the inner ends 1 on the central axis side of the elongated holes 14 and 14a, as shown in FIG.
4.14a, and the resilient force of the coil spring 6 attempts to urge both door bodies 4, 5 in the closed state in the direction of bending as shown by the arrow.

Incidentally, the elastic biasing force of the coil spring 6 causes the roller 15 attached to the bending central shaft 11 to fit into the concave groove of the traveling guide part 1 while the folding door is in the closed state. When this suppression is released, that is, when the roller 15 is positioned in the opening 2 provided in the concave groove of the traveling guide part 1, each The door bodies 4 and 5 are bent by the resilient force of the coil spring 6, and the connecting portions protrude to the outside of the room.

When opening the door bodies 4, 5, the spring force of the coil spring 6 is used to open the door up to the opening angle of the legs 7.8, as shown in FIG. The bodies 4 and 5 are bent, but after that, the legs 7 and 8 no longer have any biasing force, and the door bodies 4 and 5 will be opened when they are obtained.

At this time, the legs 7 and 8, which have reached the predetermined leg opening angle, simply move within the elongated holes 16 and 16a for releasing the legs, so the legs 7 and 8 have the door body 4°5. No load is applied to the coil spring 6 due to its rotation, and therefore no unreasonable force is applied to the coil spring 6.

FIG. 11 shows a refracting device according to another embodiment, which uses a coil spring 6 with legs 7 and 8 opened at 180 degrees as shown in FIG. 12.

As described above, the device of the present invention can sufficiently perform the refraction action when the door is initially opened by applying only a slight biasing force to the legs, so there is no unnecessary burden on the coil springs. Therefore, it has the practical benefit of improving durability.

[Brief explanation of the drawing]

Figures 1 and 2 are schematic plan views showing the folding door in the open and closed states, Figures 3 to 5 are partial plan views showing the folded state of the door body using a coil spring, and Figures 6 to 8. 9 is a partial plan view showing a state in which a device according to an embodiment of the present invention is used, FIG. 9 is a plan view showing a coil spring in its fully collapsed state, and FIG. 10 is a sectional view of a main part showing an embodiment of the device of the present invention. 11 is a plan view showing a device according to another embodiment, and FIG. 12 is a plan view of a coil spring according to another embodiment. Code, 4, 5... Door body, 6... Coil spring, 7.8... Leg body, 11... Center axis for refraction, 16° 16a. ...Long hole for releasing leg movement.

Claims (1)

[Scope of utility model registration request] A coil spring equipped with two legs having an arbitrary opening angle is wound around a bending central axis provided at the connection part of adjacent door bodies, and the above-mentioned center axis is attached to each connection part side of the door body. An arc-shaped long hole for moving and releasing the leg body is provided around the shaft portion, and the leg body of the coil spring is further attached to the inner end of the long hole located on the central axis side in the direction in which the door body is viewed in the closed state. A bending device for a folding door characterized by being pressed into contact with the legs in an open state.