KR102326452B1 - Hinge Structure For A Folding Type Door - Google Patents

Abstract

The present invention relates to a hinge structure of a folding door, comprising a square part formed at an upper end, a cylindrical body formed under the square part, and a screw part formed at the lower end of the cylindrical body, and a fixed-end door leaf adjacent to a side wall of a door frame a hinge shaft member inserted into the hinge casing formed along one side of the; a door frame connecting member fixedly coupled to an inner corner of the door frame to fix the hinge shaft member to the door frame; a ring part rotatably fitted to the outer periphery of the hinge shaft member; a door leaf connecting member for rotatably supporting the member; an intermediary block inserted into the rectangular hinge hole of the door frame connecting member and fitted around the square part of the upper end of the hinge shaft member to prevent the hinge shaft member from rotating relative to the door frame connecting member; a reaction spring fitted so that the lower end is caught around the hinge shaft member; a fixed cam ring in which a hinge hole opened in the center of the lower portion of the door connecting member is matched to a square portion of an upper end of the hinge shaft member and fixedly coupled to the hinge shaft member; Between the reaction spring and the fixed cam ring, rotation and elevation are rotatably fitted around the cylindrical body of the hinge shaft member, and the spline protrusion is elongated in the axial direction so as to fit into the spline groove formed on the inner circumferential surface of the hinge casing on the outer circumferential surface. and an interlocking cam ring for compressing or releasing the reaction spring by engagement with the fixed cam ring while the hinge casing rotates when the fixed-end door leaf is rotated.

Description

Hinge Structure For A Folding Type Door

The present invention relates to a hinge structure of a folding door, and more particularly, in a folding door consisting of a door leaf and a door leaf connected to be foldable, a folding door that is pivotally rotatably coupled to quickly close a fixed-end door coupled to a door frame It is about the door connection structure.

In general, a folding door refers to a door in which a plurality of doors are connected side by side so that they can be folded using a hinge, etc. As a representative example of this, a folding door having an adjustable opening and closing angle shown by reference numeral 101 in FIG. 1 ( Registered Patent No. 10-1219095) can be mentioned.

As shown in FIG. 1, the folding door 101 is basically composed of a door frame 103 forming an entrance and a plurality of door leaf 105 installed in the door frame 103 to open and close the door, each door leaf ( 105) are connected to each other in a foldable manner by a connecting hinge 107, and the two outermost door leafs 105 are pivotally rotatably fixed to the side of the door frame 103 by a fixed hinge 109 as shown. do. At this time, the door leaf 105 is manufactured in the form of sandwiching the glass on the door frame 111 , and the gallery window 113 is installed on the upper or lower side of the glass.

However, in the conventional folding door 101 as described above, since the fixing hinge 109 connecting the door leaf 105 to the door frame 103 is exposed to the outside, the overall aesthetics is reduced due to the fixed hinge 109 . there was.

In addition, since the folding door 101 is only pivotally connecting the door leaf 105 to the door frame 103 by a fixed hinge 109, the user can hold the door leaf 105 and do not rotate it in the forward or reverse direction to open and close it. Therefore, there was a problem that the convenience of use according to the opening and closing of the doorway was greatly reduced.

KR 10-1219095

The present invention has been proposed to solve the problems of the conventional folding door as described above, and by applying a one-touch return member to the hinge shaft member connecting the fixed-end door leaf to the door frame, the fixed-end door leaf in a fully opened state The purpose of this is to enable it to be moved to the fully closed position quickly without much effort.

In addition, another object is to increase the convenience of use of the folding door by realizing one-touch closing of the fixed-end door leaf by a pair of cam rings that are engaged with each other.

In addition, an object of the present invention is to improve the appearance of the folding door by preventing the hinge shaft member from being exposed to the outside of the door by inserting the hinge shaft member into the hinge casing of the fixed-end door leaf.

In order to achieve this object, the present invention is composed of a square part formed at the top, a cylindrical body formed under the square part, and a screw part formed at the lower end of the cylindrical body, and is one of a fixed-end door leaf adjacent to the side wall of the door frame. a hinge shaft member inserted into the hinge casing formed along the side; a door frame connecting member fixedly coupled to an inner corner of the door frame to fix the hinge shaft member to the door frame; a ring part rotatably fitted to the outer periphery of the hinge shaft member; a door leaf connecting member for rotatably supporting the member; an intermediary block inserted into the rectangular hinge hole of the door frame connecting member and fitted around the square part of the upper end of the hinge shaft member to prevent the hinge shaft member from rotating relative to the door frame connecting member; a reaction spring fitted so that the lower end is caught around the hinge shaft member; a fixed cam ring in which a hinge hole opened in the center of the lower portion of the door connecting member is matched to a square portion of an upper end of the hinge shaft member and fixedly coupled to the hinge shaft member; Between the reaction spring and the fixed cam ring, rotation and elevation are rotatably fitted around the cylindrical body of the hinge shaft member, and the spline protrusion is elongated in the axial direction so as to fit into the spline groove formed on the inner circumferential surface of the hinge casing on the outer circumferential surface. It provides a hinge structure of a folding door including; an interlocking cam ring for compressing or releasing the reaction spring by engagement with the fixed cam ring while the hinge casing rotates when the fixed-end door leaf is rotated.

According to the hinge structure of the folding door of the present invention, since the hinge shaft member for pivotally connecting the door frame and the fixed-end door leaf is inserted in the hinge casing of the fixed-end door leaf, the hinge shaft member is not exposed outside the door leaf, so that the appearance of the folding door is improved to one level. be able to improve

In addition, through the relative movement of the interlocking cam ring and the fixed cam ring of the one-touch return member, the fixed-end door leaf in a fully open state can be easily and quickly moved to the fully closed position by the restoring force of the recoil spring. be able to improve

In addition, since the interlocking camring easily returns to engagement with the fixed cam ring by removing the external force during opening of the fixed-end door due to the inclined surface contact between the interlocking cam ring and the fixed cam ring, the fixed-end door is closed even while the folding door is opened. It can be easily returned to position.

1 is a perspective view showing a conventional folding door.
Figure 2 is a perspective view showing a folding door to which the hinge structure of the folding door according to an embodiment of the present invention is applied in a closed state with the right end of the door frame removed.
Figure 3 is a perspective view showing the folding door of Figure 2 in a fully opened state in which the left end of the door frame is separated.
Figure 4 is an enlarged perspective view of the hinge structure according to an embodiment of the present invention shown in Figure 2;
Figure 5 is an exploded perspective view of Figure 4;

Hereinafter, a hinge structure of a folding door according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The folding door hinge structure according to the present invention pivotally rotates the fixed-end door leaf 20 of the two door leafs of the folding door 10, that is, the fixed-end door leaf 20 and the free-end door leaf 50, to one end of the door frame 40. As a hinge structure for mounting possible, as shown by reference numeral 1 in FIGS. 2 to 5 , the hinge shaft member 3 , the door frame connection member 5 , the door leaf connection member 7 , and the one-touch return member 9 ) is included.

Here, first, the hinge shaft member 3 is a shaft member serving as the center of the hinge structure 1 of the present invention, and as shown in FIGS. inserted and installed. At this time, in particular, when the fixed-end door leaf 20 is a metal door made of a hollow metal frame, the hinge shaft member 3 is one side of the fixed-end door leaf 20 adjacent to the side wall of the door frame 40 as shown. It is inserted into the hinge casing 11 formed along the. Accordingly, in order to fix the hinge shaft member 3 in the hinge casing 11 , a connector such as the door leaf connection member 7 described below is absolutely necessary. On the other hand, the hinge shaft member 3 must also be coupled to the door frame 40 to pivotally connect the fixed-end door leaf 20 to the door frame 40. For this, the door frame connecting member 5 described below is absolutely necessary. do.

In this way, the hinge shaft member 3 is in the form of a rod to serve as a hinge shaft, and as shown in FIGS. 4 and 5 , the one-touch return member 9 is fitted in the lower portion thereof, and the one-touch return member 9 ) The door leaf connecting member 7 is coupled directly above, and the door frame connecting member 5 is coupled thereon. To this end, as shown in FIG. 5 , the hinge shaft member 3 has a threaded portion 33 at the lower end of the cylindrical body 31 , and a prismatic portion 35 is formed at the upper end thereof. And a bolt hole 37 for fastening the closing bolt 39 is formed in the center of the upper surface in the axial direction. Accordingly, the hinge shaft member 3 allows the fixed-end door leaf 20 to be pivotally installed along one side of the door frame 40 .

At this time, the hinge shaft member 3 further includes an intermediate block 41 and an intermediate ring 43 to mediate the connection between the door frame connecting member 5 and the door leaf connecting member 7 , the intermediate block 41 ) is fitted around the prismatic portion 35 of the upper end of the hinge shaft member 3 as shown in FIGS. 2 to 5 . Accordingly, the intermediate block 41 is inserted into the rectangular hinge hole 51 of the door frame connecting member 5, and a through hole 42 corresponding to the cross-sectional shape of the square portion 35 is formed in the center, and this through hole By being fitted to the upper end of the square part 35 through (42), the hinge shaft member (3) is prevented from rotating relative to the door frame connecting member (5). In addition, the intermediate ring 43 is a ring body fitted around the square portion 35, and a hinge hole 45 of a shape corresponding to the outer shape of the square portion 35 is formed through the center. Accordingly, the intermediate ring 43 is inserted into the circular hinge hole 75 of the door connecting member 7, and the outer circumferential surface is in sliding contact with the inner circumferential surface of the hinge hole 75, so that the door connecting member 7 is connected to the hinge shaft member 3 ) so that it can be coupled to be rotatable relative to

As mentioned above, the door frame connecting member 5 is a support member that allows the hinge shaft member 3 to be mounted on the door frame 40, and as shown in detail in FIG. 2, a rectangular plate-shaped body is a door frame (40) protruding long inward from one side of the body, a hinge hole (51) extending in the longitudinal direction is penetrated inside the body, and the closing bolt (39) of the upper end of the hinge shaft member (3) is connected to the intermediate block (41) ) together with the door frame connecting member (5). In addition, the door frame connecting member 5 has screw holes 53 formed at four corners, and is respectively fixed to the upper side and lower ends of the upper side of the door frame 40 through fastening screws coupled to the screw holes 53 . Accordingly, the door frame connecting member 5 supports the hinge shaft member 3 non-rotatably by inserting the intermediate block 41 of the upper end of the hinge shaft member 3 in the hinge hole 51 .

The door leaf connection member 7 is a support member that allows the hinge shaft member 3 to be mounted on the fixed end door leaf 20. As shown in FIGS. 2 to 5, a ring and a square plate are combined. made of plate. Among them, the ring part 71 is a part that connects the door leaf connecting member 7 to the hinge shaft member 3, and is located between the fixed cam ring 17 of the one-touch return member 9 and the intermediate block 41. 3) That is, it is fitted around the square part 35, the inner peripheral surface of the hinge hole 75 of the ring part 71 fitted to the square part 35 and the outer peripheral surface of the intermediate block 41 are in sliding contact with each other. Accordingly, the leaf connecting member 7 is coupled to the intermediate block 41 , that is, the fixed-end leaf 20 is rotatably coupled to the hinge shaft member 3 . At this time, the ring portion 71 also serves to close the opening portion of the upper end of the hinge casing (11). In addition, the plate part 73 is a part that connects the door leaf connecting member 7 to the fixed-end door leaf 20 and is screwed to the upper end of the side edge of the fixed-end door leaf 20 adjacent to the hinge casing 11 . In other words, the door leaf connection member 7 surrounds the upper end of the hinge shaft member 3 so that the fixed-end door leaf 20 pivotally rotates about the hinge shaft member 3, but the ring portion 71 Since it is in sliding contact with the ring 43 , the fixed-end door leaf 20 turns around the hinge shaft member 3 .

The one-touch return member 9 is an elastic member that maintains the folding door 10 in a fully open or fully closed position, and enables the folding door 10 to be closed with one touch in the fully open position, and FIGS. 4 and 5 . As shown in Fig., when the bar mounted around the hinge shaft member 3, the external force for opening the folding door 10 is removed during the opening, the folding door 10 is immediately returned to the fully closed position.

To this end, as shown, the one-touch return member 9 largely includes a recoil spring 13 , an interlocking cam ring 15 , and a fixed cam ring 17 .

Here, the reaction spring 13 is a means for providing an elastic reaction force to the cam rings 15 and 17, and is fitted to the lower end of the hinge shaft member 3 as shown in FIGS. 4 and 5, the hinge The lower part is hooked and fixed by the locking bolt 19 coupled to the screw part 33 at the lower end of the shaft member 3, and thus the interlocking cam ring 15 is compressed when the interlocking cam ring 15 descends to press the interlocking cam ring 15 upward. .

In addition, as mentioned above, the interlocking cam ring 15 is a ring-shaped cam fitted around the hinge shaft member 3 on the reaction spring 13, and as shown in FIGS. 4 and 5, the fixed cam ring By being fitted around the hinge shaft member (3) between the (17) and the reaction spring (13) and movable up and down, the reaction spring (13) is compressed or released. In particular, the interlocking cam ring 15 is inserted into the hinge casing 11 so as to be axially connected to the pivot rotation center of the fixed-end door leaf 20 as shown in FIGS. 4 and 5, and the spline protrusion 23 is formed on the outer peripheral surface. It extends long in the axial direction and is fitted into the spline groove 25 of the inner circumferential surface of the hinge casing 11 . Accordingly, the interlocking cam ring 15 rotates in association with the rotation of the fixed-end door leaf 20 , that is, the hinge casing 11 , and moves up and down by contact with the fixed cam ring 17 during rotation.

In addition, as mentioned above, the fixed cam ring 17 is also a ring-shaped cam that is fitted around the hinge shaft member 3 between the interlocking cam ring 15 and the door leaf connecting member 7 , in FIGS. 4 and 5 . As shown in, doedoe engaged on the interlocking cam ring 15 in the closed state of the door, the hinge hole 21 opened in the center is matched to the square part 35, so that the hinge shaft member 3 and the shaft joint. Therefore, the fixed cam ring 17 cannot be rotated relative to the hinge shaft member 3, and when the interlocking cam ring 15 rotates together with the fixed-end door leaf 20, the current fixed position is maintained, thereby interlocking. The cam ring 15 moves downward while performing relative rotation to compress the recoil spring 13 .

As shown in FIGS. 4 and 5 , the interlocking cam ring 15 and the fixed cam ring 17 that are engaged to interlock each other in this way, a wavy inclined surface is formed on the contact surface in contact with each other, and the interlocking cam ring located below the interlocking cam ring. (15) is a wavy inclined surface is formed on the upper surface, on the contrary, the fixed cam ring 17 located on the upper side is formed with a wavy inclined surface on the lower surface. At this time, the inclined surface of the interlocking cam ring 15 is formed by the mountains 27 and the valleys 28, and the inclined surfaces of the fixed cam ring 17 are formed by the mountains 29 and the valleys 30 alternately at intervals of 90 degrees. In addition, a ridge 271 is formed at the upper end of the mountain 27 of the interlocking cam ring 15 , and a valley floor 282 is formed at the lower end of the valley 28 , and the fixed cam ring 17 is similarly formed of the mountain 29 . A ridge 291 is formed at the lower end, and a valley floor 302 is formed at the upper end of the trough 30 , respectively. Accordingly, since the ridges 271,291 and the valley floors 282 and 302 are flat, as shown in detail in FIG. 2 , when the fixed-end door leaf 20 is in the fully closed position, the ridges 271 of the interlocking cam ring 15 are is in contact with the valley floor 34 of the fixed cam ring 17 , and the ridge 33 of the fixed cam ring 17 is in contact with the valley floor 32 of the interlocking cam ring 15 , respectively. Conversely, as shown in detail in FIG. 3 , when the fixed-end door leaf 20 is in the fully open position, the ridge 31 of the interlocking cam ring 15 is in contact with the ridge 33 of the fixed cam ring 17 . Therefore, in all sections except for the section where the ridge 31 and the ridge 33 contact and maintain the position in the fully open position of the fixed-end door leaf 20, the interlocking cam ring 15 and the fixed cam ring 17 are connected to the ridge 27 .

Now, the operation of the hinge structure 1 of the folding door according to a preferred embodiment of the present invention will be described as follows.

The folding door 10 to which the hinge structure 1 of the folding door of the present invention is applied is, as shown in FIG. It is straightened and blocks the entrance. At this time, in the hinge structure 1 of the present invention, as shown in FIGS. 2 and 4 , the door frame connection member 5 as well as the door leaf connection member 7 are arranged along the fixed end door leaf 20, and the interlocking cam ring (15) and the fixed cam ring (17) remain engaged.

In the above state, when the user pushes or pulls the fixed-end door leaf 20 directly or indirectly through the free-end door leaf 50 , the folding door 10 is the fixed-end door leaf 20 along the connection part 60 to the inside. Alternatively, the doorway is finally fully opened as shown in FIG. 3 while being folded outward. At this time, the interlocking cam ring 15 rotates together with the fixed-end door leaf 20 while the spline protrusion 23 is bitten by the spline groove 25 of the hinge casing 11, and the door leaf connection member 7 is also the fixed-end door leaf 20 ) and rotate with However, in the fixed cam ring 17 fitted to the square part 35 of the hinge shaft member 3 , the square part 35 of the hinge shaft member 3 is in the through hole 42 of the intermediate block 41 . It is fitted and the intermediate block 41 is fitted into the rectangular hinge hole 51 of the door frame connecting member 5, thereby being fixed to the door frame 40, despite the rotation of the interlocking cam ring 15, the fixed position to rotate the interlocking cam ring 15 relative to it.

In this way, while the interlocking cam ring 15 is relatively rotated with respect to the fixed cam ring 17, the fixed cam ring 17 does not rotate, but also catches the door connecting member 7 and does not rise, so the interlocking cam ring 15 ) is pressed downward by the inclined surface of the fixed cam ring 17 while rotating to compress the reaction spring 13, and finally, as shown in FIG. , the ridge 271 comes into contact with the ridge 291 of the fixed cam ring 17 . In this process, the interlocking cam ring 15 makes inclined surface contact with the fixed cam ring 17 until the ridge 271 comes into contact with the ridge 291 of the fixed cam ring 17, so a user who wants to open the folding door 10 The moment the external force of the disappears, it returns to the original closing position by the reaction force of the reaction spring 13, and thus the fixed-end door leaf 20 also returns to the closing position. At this time, since the contact area between the ridge 271 and the ridge 291 for maintaining the interlocking cam ring 15 at the bottom dead center is relatively narrow as shown in FIG. Even with a slight rotation by It can be completely closed quickly.

1: Hinge structure 3: Hinge shaft member
5: door frame connecting member 7: door leaf connecting member
9: one-touch return member 10: folding door
11: hinge casing 13: recoil spring
15: interlocking cam ring 17: fixed cam ring
20: fixed-end door leaf 40: door frame
50 : free end door

Claims (1)

Consists of a prismatic portion 35 formed at the upper end, a cylindrical body 31 formed under the prismatic portion 35, and a screw portion 33 formed at the lower end of the cylindrical body 31, and a door frame ( 40) a hinge shaft member 3 inserted into the hinge casing 11 formed along one side of the fixed-end door leaf 20 adjacent to the side wall;
a door frame connecting member 5 fixedly coupled to the inner edge of the door frame 40 to fix the hinge shaft member 3 to the door frame 40;
A ring portion 71 that is rotatably fitted to the outer periphery of the square portion 35 formed on the upper end of the hinge shaft member 3 , is formed on one side of the ring portion 71 and is adjacent to the hinge casing 11 . It consists of a plate part 73 fixedly coupled to the upper end of the side edge of the fixed-end door leaf 20 to support the fixed-end door leaf 20 relative to the hinge shaft member 3 rotatably, and the hinge shaft member 3 ) and a fixed cam ring (17) fixedly coupled to the periphery and also a door leaf connection member (7) capable of relative rotation;
A through hole 42 corresponding to the cross-sectional shape of the square portion 35 formed on the upper end of the hinge shaft member 3 is formed in the center, and is fitted around the square portion 35 through the through hole 42 . and the outer periphery is inserted into the rectangular hinge hole 51 formed in the door frame connecting member 5 to prevent the relative rotation of the hinge shaft member 3 with respect to the door frame connecting member 5. Intermediate block 41 ;
a reaction spring (13) fitted with a lower end around the hinge shaft member (3);
A fixed cam ring (17) which is fixedly coupled to the hinge shaft member by matching the hinge hole (21) opened in the center from the lower part of the door connecting member (7) to the square part (35) of the upper end of the hinge shaft member (3) ; and
Between the reaction spring 13 and the fixed cam ring 17, the hinge shaft member 3 is rotatably and lifted around the cylindrical body 31, and the outer circumferential surface is the inner circumferential surface of the hinge casing 11. The spline protrusion 23 is elongated in the axial direction to fit into the spline groove 25 formed in the and an interlocking cam ring (15) for compressing or releasing the reaction spring (13) by engagement with the
The prismatic portion 35 formed on the upper end of the hinge shaft member 3 is fitted so that the fixed cam ring 17 and the intermediate block 41 are not rotated on the outer periphery of the angular portion 35 on the outer periphery. Features a hinged structure of a folding door.

Images