KR102754843B1 - Connecting Structure Of A Folding Door - Google Patents

Abstract

The present invention relates to a connecting structure of a folding door, comprising: a door frame (11) in which an upper rail (13) at the top and a lower rail (14) at the bottom are arranged to open toward each other; and a plurality of door leaves (21, 22, 23) arranged between the upper rail (13) and the lower rail (14); In the connecting structure connecting the door leaves (21, 22, 23) of a folding door (10), when n is a natural number, door leaf connecting members (3) arranged in pairs vertically to connect a 2n-1th door leaf (21) and a 2nth door leaf (22); And it comprises a sliding connection member (5) arranged in pairs vertically to connect the 2nth door leaf (22) and the 2n+1th door leaf (23); wherein the sliding connection member (5) is characterized in that the upper sliding connection member (5) is fitted into the upper rail (13) to move forward and backward along the upper rail (13), and the lower sliding connection member (5) is fitted into the lower rail (14) to move forward and backward along the lower rail (14). Therefore, when the folding door is closed, the connecting member is surrounded by the hinge arm of the sliding hinge, thereby preventing damage to the appearance of the folding door due to external exposure of the connecting member.

Description

{Connecting Structure Of A Folding Door}

The present invention relates to a connecting structure of a folding door, and more specifically, to a connecting structure of a folding door in which a plurality of door leaves are foldably connected in a pleated manner so that the door leaves are supported on the door frame by improving the structure of the sliding connection among the door leaf connection and the sliding connection, thereby preventing the external exposure of the sliding connection without damaging the functionality of the sliding connection, thereby further improving the appearance of the folding door.

In general, the utility of folding doors, which are made up of multiple door panels that can be folded and unfolded in a pleated manner, is gradually increasing as they have the advantage of maximizing the space utilization of the door by securing the maximum open space through the door frame when opened.

Among these folding doors, glass folding doors with individual door panels made of glass have been widely used recently. As an example of such folding doors, the folding door device (patent registration no. 10-1874013) illustrated in Fig. 1 can be cited.

As shown in Fig. 1, each door frame (120) is foldably connected to another adjacent door frame (120) through a sliding frame (113) connected to a hinge (114) on one side of the rail (111) and a movable frame (112) connected to a hinge (123) on the other side.

Accordingly, this door device has a sliding frame (113) or a movable frame (123) interposed between the door frames (120) and the door frames (120), so when the door is completely closed, the frame (113, 123) is exposed to the outside, which has the problem of significantly damaging the appearance of the door device.

Moreover, in the case where each door is a glass door with only a support frame at the top and bottom and no support frame at the left and right sides, there is a problem in that it is not possible to expect an aesthetic appearance as if the entire door is made of glass when the door is closed because a frame (113, 123) is interposed between each glass plate forming the door.

KR 10-1874013

The present invention has been proposed to solve the problems of the conventional door device as described above, and has the purpose of miniaturizing a connecting member arranged between door panels for attaching a hinge when connecting two adjacent door panels with a hinge so that the door panels can be folded, and also surrounding the hinge in a closed state, thereby preventing the appearance of the folding door from being spoiled by the connecting member exposed to the outside between adjacent door panels when the folding door is partially or completely closed.

In order to achieve these objects, the present invention provides a door frame having an upper rail at the top and a lower rail at the bottom arranged to open toward each other; and a plurality of door leaves connected in a single line and arranged between the upper rail and the lower rail so as to move, rotate, or pivotally move and rotate simultaneously; a connecting structure for connecting the door leaves of a folding door, comprising: a door leaf connector arranged in pairs vertically so as to connect a 2n-1th door leaf and a 2nth door leaf, when n is a natural number; and a sliding connector arranged in pairs vertically so as to connect the 2nth door leaf and the 2n+1th door leaf; wherein the sliding connector provides a connecting structure for a folding door in which an upper sliding connector is fitted into the upper rail to move back and forth along the upper rail, and a lower sliding connector is fitted into the lower rail to move back and forth along the lower rail.

In addition, the slide connection includes: a slide hinge that hinge-typely connects the 2n-th door leaf and the 2n+1-th door leaf; a slide wheel mounted to slide along the upper and lower rails; and a connecting body that connects the slide hinge and the slide wheel; wherein the connecting body is preferably configured such that it is enclosed within the slide hinge and not exposed to the outside when the folding door is partially or completely closed.

In addition, it is preferable that the first hinge arm of the sliding hinge coupled to the 2n-th door leaf and the second hinge arm of the sliding hinge coupled to the 2n+1-th door leaf each have a settling groove formed on the inner surface thereof for receiving the connecting body together when the sliding hinge is closed.

In addition, it is preferable that the connecting body comprises: a power pillar extending from the upper surface of the slideway toward the inside of the door frame; a crank arm extending to connect the power pillar and the hinge axis; and a hinge ring formed at one end of the crank arm to pivotally connect the crank arm to the hinge axis.

According to the connecting structure of the folding door of the present invention, the sliding connecting member connecting the 2nth door leaf and the 2n+1th door leaf connects the 2nth door leaf and the 2n+1th door leaf so as to be foldable, while allowing the connecting portion to slide left and right along the upper and lower rails of the door frame, and allows one of the 2nth door leaf and the 2n+1th door leaf to rotate without moving the other, so that the doors of the folding door can be partially opened.

In addition, when configuring the above-mentioned sliding connection, since the connecting member connecting the sliding member and the sliding hinge is not exposed between the first and second hinge arms of the closed sliding hinge when the 2nth door leaf and the 2n+1th door leaf are closed, it is possible to prevent damage to the appearance of the folding door due to external exposure of the connecting member when the folding door is closed. That is, since the connecting member can be hidden between the hinge arms of the sliding hinge when the 2nth door leaf and the 2n+1th door leaf of the folding door are closed, it is possible to obtain a visual effect in terms of the appearance as if the entire door is made of glass.

In addition, since mohair grooves can be formed parallel to the upper and lower rails on the front and rear sides of the connecting body on the lower or upper surface facing the slider when the folding door is partially or completely closed as described above, mohair can be combined on the front and rear sides of the connecting body, and thus mohair can be placed without omission between the door leaf and the upper and lower rails, and as a result, the windproof and heat insulating effects of the folding door can be enhanced.

Figure 1 is an enlarged perspective view of the hinge portion of a conventional folding door device.
Figure 2 is a perspective view of a folding door according to one embodiment of the present invention.
Figure 3 is an enlarged perspective view of the sliding connection shown in Figure 2.
Figure 4 is a plan view of Figure 3.
Figure 5 is a partially enlarged perspective view showing the connection state of the door leaf with the folding door of Figure 2 fully open.
Figure 6 is an enlarged perspective view of the sliding connection of Figure 5.
Figure 7 is a plan view of Figure 6.
Figure 8 is an enlarged perspective view of a portion of the folding door moving from the fully open state to the fully closed state of Figure 5.
FIG. 9 is a perspective view showing a partially opened state of a folding door according to another embodiment of the present invention.
FIG. 10 is a perspective view showing a folding door according to another embodiment of the present invention in a partially open state, different from FIG. 9.

Hereinafter, a folding door connection structure according to one embodiment of the present invention will be described in detail with reference to the attached drawings.

The connecting structure of a folding door according to the present invention relates to a structure for connecting door leaves (21, 22, 23) of a folding door (10), as illustrated by reference numeral 1 in FIGS. 2 and 3. The folding door (10) is composed of a door frame (11) and a plurality of door leaves (21, 22, 23), and the connecting structure (1) is composed of a door leaf connecting member (3) and a sliding connecting member (5).

Here, the door frame (11) is a frame that surrounds the door leaf (21, 22, 23), and as shown in Fig. 2, is composed of upper and lower rails (13, 14) forming upper and lower horizontal frames and left and right vertical frames (15, 16) connecting them at both ends. At this time, the upper rail (13) at the top and the lower rail (14) at the bottom must be connected by a sliding connection (5) described later, so they are arranged to open inwardly toward each other, that is, toward the door leaf (21, 22, 23).

The above door leafs (21, 22, 23) are a means for opening and closing the folding door (10), and as shown in FIG. 2, a plurality of them are arranged in a continuous manner so that they can be folded within the upper door frame (11), and a plurality of door leafs (21, 22, 23) that are connected in a single line and arranged between the upper rail (13) and the lower rail (14) can each move, rotate, or pivot. At this time, movement means that one door leaf (21, 22, 23) moves left and right along the upper and lower rails (13, 14) without rotating. Rotation means, on the contrary, that one door leaf (21, 22, 23) rotates around one end without moving left and right along the upper and lower rails (13, 14). Rotation means that one door leaf (21, 22, 23) moves and rotates at the same time. Meanwhile, the door (21, 22, 23) can be of various shapes such as a wooden door or a steel door, but in this embodiment, a glass door is used. At this time, as shown in Fig. 2, the glass door is composed of one glass plate (25) and a support frame (26) fitted and joined to the upper and lower sides thereof.

Accordingly, as shown in Fig. 5, the first door leaf (21) is pivotally connected to the inner wall of the door frame (11) via a fixed hinge (2). In addition, the first door leaf (21) and the second door leaf (22) are hinge-connected via a door leaf connector (3), and the second door leaf (22) and the third door leaf (23) are hinge-connected via a sliding connector (5).

The above door leaf connector (3) is a means for connecting door leaves, and as illustrated in FIG. 2, especially when n is a natural number, it is arranged in pairs above and below the point where, for example, the first door leaf (21) fixed to the door frame (11) and the second door leaf (22) connected to the first door leaf (21) on the opposite side of the door frame (11) meet, so as to connect the 2n-1th door leaf (21) and the 2nth door leaf (22). At this time, the door leaf connector (3) is preferably formed of a single hinge as a means for connecting the door leaves (21, 22) so that they can be folded together. In this case, as illustrated in FIGS. 2, 5, 8, and 10, the left and right hinge arms (31) of the door leaf connector (3) are respectively connected to the upper and lower corner surfaces of the door leaves (21, 22), that is, the corner surfaces of the upper and lower support frames (26). Therefore, the door leaf connector (3) connects the door leaves (21, 22) to rotate relative to each other around the hinge axis (32).

The above sliding connector (5) is also a means for connecting door leaves to door leaves, and as illustrated in FIG. 2, in particular, when n is a natural number, it is arranged in pairs above and below the point where the door leaves (22, 23) meet so as to connect the 2nth door leaf (22) and the 2n+1th door leaf (23). At this time, the sliding connector (5) is a means for connecting the door leaves (22, 23) so that they can be folded together and sliding the connecting portion to the left and right of the door frame (11) along the upper and lower rails (13, 14). The upper sliding connector (5) is fitted into the upper rail (13) and is configured to move back and forth left and right along the upper rail (13), and the lower sliding connector (5) is fitted into the lower rail (14) and is configured to move back and forth left and right along the lower rail (14).

To this end, the glide connection (5) is composed of a glide hinge (51), a glide wheel (52), and a connecting body (53), as shown in FIGS. 3 to 7.

Here, the sliding hinge (51) is a part that connects the 2nth door leaf (22) and the 2n+1th door leaf (23) in a hinge manner, as shown in FIGS. 3 to 7, and the first and second hinge arms (55, 57) are respectively connected to the upper and lower edge surfaces of the door leafs (22, 23), that is, the edge surfaces of the upper and lower support frames (26). Accordingly, the sliding hinge (51) connects, for example, the second door leaf (22) and the third door leaf (23) connected to the second door leaf (22) on the opposite side of the first door leaf (21) of the door leaf (22) so as to rotate relative to each other about the hinge axis (54).

At this time, the first hinge arm (55) coupled to the 2nth door leaf (22) and the second hinge arm (57) coupled to the 2n+1th door leaf (23) are configured to receive a connecting body (53) in the internal space created together when the sliding hinge (51) is closed, i.e., when the doors (22, 23) are closed, as shown in FIG. 3. To this end, each hinge arm (55, 57) has a settling groove (56, 58) formed on its inner surface, as shown in FIG. 6. At this time, it is preferable that each of the settling grooves (56, 58) has a shape that fits the outline of the connecting body (53) so that it can receive the connecting body (53) when they are in contact with each other, as shown in FIG. 3.

In addition, as shown in FIG. 3, each of the first and second hinge arms (55, 57) is formed with a mohair groove (59) parallel to the upper and lower rails (13, 14) so as to be positioned at the front and rear sides of the connecting body (53) on the lower or upper surface facing the slider (52) when the sliding hinge (51) is closed, that is, when the folding door (10) is partially or completely closed and surrounds the connecting body (53). Accordingly, when the sliding hinge (51) is closed as shown in FIG. 3, mohair can be inserted into the mohair groove (59). Accordingly, the sliding hinge (51) can completely block the front and rear sides of the connecting body (53) with mohair even when the folding door (10) is completely closed as shown in FIG. 3, and thus the windproof and insulating effects of the folding door (10) can be enhanced.

The above-mentioned slider (52) is a part that supports the slide hinge (51) so that the slide hinge (51) moves along the upper and lower rails (13, 14). As shown in FIGS. 3 to 6, it is mounted in the upper and lower rails (13, 14) so that it slides along the upper and lower rails (13, 14), and is connected to the bottom surface of the slide hinge (51) through the connecting body (53). To this end, the slider (52) may be composed of a body (61) that supports the connecting body (53) and, for example, a plurality of rollers (63) mounted on the body (61) so that it can roll along the upper and lower rails (13, 14).

The above connecting member (53) is a part that connects the slide hinge (51) and the slider (52) as shown above, and as shown in FIGS. 3 to 6, the lower part is connected to the upper surface of the slider (52), and the rear part from the upper part to the middle lower part has the shape of a pillar connected to the slide hinge (51). Therefore, as shown in FIG. 3, when the folding door (10) is partially or completely closed, i.e., when the slide hinge (51) is closed, the connecting member (53) is surrounded within the slide hinge (51) and is not exposed to the outside.

In this way, the connecting member (53) accommodates the difference in distance (d) that occurs between the slider (52) and the slide hinge (51), as illustrated in FIGS. 4 and 7. That is, the connecting member (53) is configured with a power column (71), a crank arm (73), and a hinge ring (75), as illustrated in FIGS. 3 to 6, to connect the slider (52) and the slide hinge (51), despite the difference in distance (d) that occurs from the center of the slider (52) to which one end is connected to the hinge axis (54) of the slide hinge (51) to which the other end is connected.

Here, the above-mentioned supporting pillar (71) is a rod extending from the center of the upper surface of the slide (52) toward the inside of the door frame (11), i.e., upward in the drawing, and the longer the length, the higher the supporting strength for the slide hinge (51) and further for the door leaf (22, 23). However, as mentioned above, it is preferable that the supporting pillar (71) has a shape that fits the inner contour of the securing groove (56, 58) of the hinge arm (55, 57) so that it fits into the securing groove (56, 58) when the slide hinge (51) is closed.

The crank arm (73) above is a part to compensate for the offset distance (d) as shown in Fig. 6, and is extended to connect the power column (71) and the hinge axis (54), and its length can be varied according to the position or number of hinge rings (75).

The above hinge ring (75) is a means for connecting the crank arm (73) to the slide hinge (51), and as shown in FIG. 6, is formed in a cylindrical shape at one end of the crank arm (73) and is rotatably fitted to the hinge axis (54) to pivotally connect the crank arm (73) to the hinge axis (54).

Now, the operation of the folding door connecting structure (1) according to a preferred embodiment of the present invention is explained as follows.

According to the connection structure (1) of the present invention, when the folding door (10) is completely closed as shown in FIG. 2, all door leaves (21, 22, 23), which are composed of the 2n-1th, 2nth, and 2n+1th door leaves, are arranged in a single row on the upper and lower rails (13, 14) within the door frame (11) as shown in FIG. 3.

At this time, the door leaf connector (3) formed as a hinge connecting the 2n-1th and 2nth door leafs, i.e., the first door leaf (21) and the second door leaf (22), connects the first door leaf (21) and the second door leaf (22) vertically side by side in the closed state as illustrated in FIG. 2 and FIG. 9. Thereafter, when an external force is applied from the front or the rear of the door (1), it gradually opens so that the door leafs (21) and the door leafs (22) can be folded in an inverted V shape as illustrated in FIG. 8. When the door leafs (21, 22) reach the fully open position, the door leaf connector (3) opens completely and horizontally connects the door leafs (21, 22) side by side as illustrated in FIG. 5 or FIG. 10.

Meanwhile, the sliding connection (5) connects the 2nth and 2n+1th door leaves, that is, the second door leaf (22) and the third door leaf (23), so that the second door leaf (22) and the third door leaf (23) are vertically connected in parallel in the closed state, as shown in FIGS. 2 and 3. Thereafter, when an external force is applied from the front or rear of the door (1), the sliding hinge (51) gradually opens, as shown in FIG. 8, and at the same time, the sliding member (52) gradually moves in the direction in which the external force is applied, that is, to the left in FIG. 8. Accordingly, the door leaves (22) and door leaves (23) rotate in opposite directions and move to the left to fold in a V shape as shown in the drawing. When the door (22, 23) is fully opened, the sliding connection (5) opens the sliding hinge (51) as shown in FIGS. 5 and 6 to horizontally connect the door (22, 23) side by side.

Meanwhile, in another embodiment applied to a four-leaf folding door, the slide connector (5) can be configured so that when the first hinge arm (55) is closed, the second hinge arm (57) is opened, and the slider (52) is not moved, as illustrated in FIG. 9, for example, the first door leaf (21) and the second door leaf (22) are completely closed, and only the third door leaf (23) and the fourth door leaf (24) are completely open. Similarly, as illustrated in FIG. 10, when the first hinge arm (55) is completely opened, the second hinge arm (57) is completely closed, and the slider (52) is moved to the fully open position of the door (10), i.e., as far to the left as possible in the drawing, the first door leaf (21) and the second door leaf (22) are opened, but only the third door leaf (23) and the fourth door leaf (24) are closed. However, in this case, the door leaf connector (3) is opened. Therefore, the folding door (10) can individually open or close only some of the door leaves. At this time, the fourth door leaf (24) is rotatably supported on the upper and lower rails (13, 14) through the closing hinge (7).

In particular, the sliding connector (5) surrounds the connecting body (53) between the first and second hinge arms (55, 57) of the sliding hinge (51) when the 2nth door leaf (22) and the 2n+1th door leaf (23) are closed, thereby preventing the connecting body (53) from being exposed to the outside when the door leafs (22, 23) are closed, thereby further improving the appearance of the folding door (10).

Although specific implementations of the present invention have been described above as examples, they are only for the purpose of explanation and are not intended to limit the scope of protection of the present invention. It will be apparent to those skilled in the art to which the present invention pertains that various substitutions, modifications, and changes are possible within a scope that does not depart from the technical idea of the present invention.

1: Connection structure 2: Fixed hinge
3: Door connector 5: Slide connector
7: Closing hinge 10: Folding door
11: Door frame 13, 14: Upper and lower rails
15, 16: Vertical frame 21, 22, 23, 24: Door leaf
25: Glass plate 26: Support frame
31, 55, 57: Hinge arm 51: Slide hinge
52 : Runway 53 : Connector
54: Hinge axis 56, 58: Fixing groove
59 : Mohair Home 61 : Body
63: Roller 71: Power column
73: Crank arm 75: Hinge ring

Claims (2)

A door frame (11) arranged so that the upper rail (13) at the top and the lower rail (14) at the bottom are open toward each other; and
In a connecting structure connecting the door leaves (21, 22, 23) of a folding door (10) which is composed of a plurality of door leaves (21, 22, 23) arranged between the upper rail (13) and the lower rail (14) and connected in a single line so as to move, rotate, or rotate simultaneously with movement,
When n is a natural number,
Door leaf connectors (3) arranged in pairs vertically to connect the 2n-1th door leaf (21) and the 2nth door leaf (22); and
It is composed of a sliding connection member (5) arranged in pairs vertically to connect the 2nth door leaf (22) and the 2n+1th door leaf (23);
The above-mentioned sliding connection (5) is configured such that the upper sliding connection (5) is fitted into the upper rail (13) and moves forward and backward along the upper rail (13), and the lower sliding connection (5) is fitted into the lower rail (14) and moves forward and backward along the lower rail (14).
The above-mentioned sliding connection (5) is
In order to hinge-type connect the 2nth door leaf (22) and the 2n+1th door leaf (23), a sliding hinge (51) in which the first hinge arm (55) is coupled to the edge surface of the support frame (26) of the 2nth door leaf (22) and the second hinge arm (57) is coupled to the edge surface of the support frame (26) of the 2n+1th door leaf (23);
A slider (52) equipped to slide along the upper and lower rails (13, 14); and
It includes a connecting body (53) connecting the above slide hinge (51) and the above slide car (52);
A folding door connection structure characterized in that the first hinge arm (55) and the second hinge arm (57) are configured to receive the connecting body (53) in an internal space created together when the sliding hinge (51) is closed. In claim 1,
The above connector (53) is
A power pillar (71) that extends upward from the upper surface of the above slide (52) and fits into the fixing grooves (56, 58) of the first hinge arm (55) and the second hinge arm (57) when the slide hinge (51) is closed;
A crank arm (73) extended to connect the hinge axis (54) connecting the first hinge arm (55) and the second hinge arm (57) and the power column (71); and
A folding door connection structure characterized by including a hinge ring (75) formed at one end of the crank arm (73) so as to pivotally connect the crank arm (73) to the hinge axis (54).

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