KR20170031368A

KR20170031368A - Folding door

Info

Publication number: KR20170031368A
Application number: KR1020150128781A
Authority: KR
Inventors: 이녹하
Original assignee: 주식회사 성진미도어
Priority date: 2015-09-11
Filing date: 2015-09-11
Publication date: 2017-03-21

Abstract

The present invention relates to a folding door capable of making exact opening and closing operations, preventing a finger from being stuck in the door, and having an excellent thermal insulation and soundproof effects with the elimination of a gap between door plates by having two door plates opened or closed by being interlocked with each other at the same angle. The folding door is opened or closed as a first door plate (20), hinged with a door frame (10), and a second door plate (30), hinged with the first door plate (20), are folded or unfolded. A hinge combination part between the first and second door plates (20,30) includes arc-shaped grooves (23,33) formed in a longitudinal direction and opened in a side direction to vertical frames (22,32) of the first and second door plates (20,30). As the first and second door plates (20,30) are combined to have two circles partially overlapped, the middle part is inserted into a hinge frame (40) of which cross section has a smaller width than the diameter of the circles. The upper and lower parts of the hinge frame (40) are combined with the upper and lower parts of the first and second door plates (20,30) to be able to be rotated, but at least one of the upper and lower parts of the hinge frame (40) includes a pair of interlocking gears (50) to make the first and second door plates (20,30) opened or closed while being interlocked with each other at the same angle.

Description

Folding door

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a folding door used as a middle door installed mainly inside a front porch. More specifically, the folding door can be opened and closed in both forward and backward directions, So that it can be opened and closed while being interlocked at the same angle, so that the closing and opening operation can be surely performed, the accident that the fingers etc. are caught between the doors does not occur, and the gap between the doors is minimized, It is about a folding door.

Generally, a folding door having a plurality of door hinged structures is not structurally robust, but has an advantage of maximizing the opening width as compared with a general sliding door or a door lock door, and is used mainly as a doorway on the inside of the door.

Such a folding door is advantageous in that it can overcome the disadvantage that the opening and closing of the door is inconvenient when the obstacle exists in the direction of opening the general sliding door because the turning radius is small when opening and closing.

Patent Document 1 discloses a folding sliding door in which a first door and a second door are connected by a hinge and the end of the first door is rotatably fixed to the wall. In the case of the folding sliding door having such a structure, And the second door is hinged to each other, but when the second door with the handle is opened and closed by hand, the second door is first opened while being pivoted about the hinge engaging part, and the first door is opened The opening force applied to the second door is not opened in connection with the operation but is opened while reacting differently from the opening state of the second door depending on the direction of the operation of the strength or the force. , It is not easy to make a straight line between the second door with the handle and the first door when the door is closed so that the door is left in a state that it is not properly closed, Therefore, consumers are demanding improvement of these problems.

Patent Documents 2 to 4 disclose such folding sliding doors, but the same common problems as in Patent Document 1 still remain.

Korean Registered Patent No. 10-1540218 (Registered on July 23, 2015) Folding sliding doors Korean Registered Patent No. 10-0746016 (Registered on July 30, 2007) Insect proof security door Korean Registration Practical No. 20-0438066 (Registered on Nov. 11, 2008) Security windows for entrance doors Japanese Patent No. 4842557 (Registered on October 14, 2011) Opening and closing door

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to provide a folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type folding type .

The present invention is also intended to improve the heat insulation and soundproof effect for the installation of the Chinese door by minimizing the gap between the doors without causing the accident that the fingers or the like are caught between the doors of the folding door.

In order to accomplish the above object, the present invention provides a door structure comprising a first door including a first door hinged to a door frame and a second door hinged to the other end of the first door, the first and second doors being folded or unfolded, On the door;

Wherein a hinge connecting portion between the first and second doors has a semicircular groove formed laterally in the longitudinal frame of the first and second doors,

A hinge frame having a cross-sectional shape having a width smaller than the diameter of the circle is interposed between the semicircular grooves of the first and second door pillars so that the two circles partially overlap each other,

The upper and lower ends of the hinge frame are pivotally coupled to the upper and lower ends of the first and second door hinge frames. At least one of the upper and lower ends of the hinge frame is provided with a pair of meshing gears, The folding door is provided to be opened and closed while the door is interlocked at the same angle.

According to the present invention, since the engaging gear is provided at the hinge engaging portion of the folding door composed of a plurality of doors, the two doors are opened and closed at the same angle. So that the two doors are folded until they are completely parallel to each other. Therefore, the door can be closed and the open state can be reliably maintained. The hinge connecting portion between the doors can be formed by a two- So that there is no possibility of accident such as pinching of the fingers or the like in the opening of the door, and the gap between the hinge frame and the vertical frame of the door is sealed by the mohair, so that air or noise Can be effectively blocked. Insulation and noise It has a useful effect that can improve the blocking effect.

1 is a front view showing the configuration of a folding door according to an embodiment of the present invention,
Fig. 2 is a plan view showing the folded state of the folding door shown in Fig. 1,
3 is a plan view showing a state in which it is opened and closed in a direction opposite to that of Fig. 2,
4 is an exploded perspective view showing the hinge coupling portion of the folding door,
5 is an assembled perspective view showing a hinge joint portion of a folding door,
6 is a perspective view showing a state in which the hinge coupling portion of the folding door is rotated at a predetermined angle,
7 is a plan view showing a vertical frame of a door,
8 is a plan view of the engaging gear,
9 is a plan view showing an unfolded state of the hinge engaging portion,
10 is a plan view showing a state in which the hinge coupling portion is folded.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 10 show a folding door according to an embodiment of the present invention and parts constituting the folding door. The folding door includes a first door 20 having one end hinged to the door frame 10 by a shaft pin P, And a second door 30 hinged to the other end of the first door 20 so that the first and second doors 20 and 30 are opened or closed while being folded or unfolded.

The hinge connection portion between the first and second door pairs 20 and 30 has a circular arc-shaped groove 23 and 33 opened laterally in the vertical frames 22 and 32 of the first and second doors 20 and 30, Direction,

The hinge frame (20, 30) has a circular cross-sectional shape in which two circles are partially overlapped to each other and have a cross-sectional shape with a width smaller than the diameter of the circle 40 are inserted,

The upper and lower ends of the hinge frame 40 are pivotally coupled to upper and lower ends of the first and second door assemblies 20 and 30. A pair of meshing gears 50 are mounted on the upper end of the hinge frame 40, So that the first and second door assemblies 20 and 30 are opened and closed while being interlocked at the same angle.

In the present invention, a pair of engaging gears may be provided at the lower end of the hinge frame 40 in the same manner as the upper end of the hinge frame 40. However, in this embodiment, the hinge bracket 60 (see FIG. 1) Lt; / RTI >

In the present embodiment, the door frame 10 has no threshold at the lower end and is composed of left and right vertical frames 12 and 14 and an upper horizontal frame 16, And the latch door is provided with a latching groove 13 for latching the latch h of the door lock L provided on the door 30 so that the folding door can be kept closed and locked. And it will be apparent to those skilled in the art that various modifications and changes will be apparent to those skilled in the art.

A guide roller is provided on the rail so as to be slidable in the left and right direction. A guide pin protruding from a substantially middle portion of the upper end of the second door is provided on the guide roller, So that the second door 30 can move in the lateral direction along the door frame 10 while the guide rollers bear the load of the second door 30, which is also commonly used in the field of folding doors And a detailed description thereof will be omitted.

In this embodiment, the width of the first and second doors 20 and 30 is different from that of the first and second doors 20. More specifically, the width of the second door 30 is about 2 to 4 times However, the present invention is not limited to this, and the widths of the first and second doors may be set to be equal to each other or larger than the width of the second door, if necessary.

In the present embodiment, the first and second door assemblies 20 and 30 include two vertical frames 22 and 32, two upper and lower horizontal frames 21 and 31, and inner glass plates G1 and G2 And the vertical frames 22 and 32 and the horizontal frames 21 and 31 constituting the first and second door pairs 20 and 30 are manufactured by extruding aluminum material and cutting it into a required length, The present invention is not limited to this, and it is needless to say that the present invention can be made of wood, synthetic resin, or the like in addition to a metallic material such as aluminum.

In addition to the arcuate grooves 23 and 33 formed at one side of the vertical frame 22 and 32, screw gears 50 and 60 for screwing the gear 50 and the hinge bracket 60 at the upper and lower ends, respectively, (26, 36) are formed.

In the present embodiment, generally T-shaped mohair insertion grooves 24, 34 are formed along the longitudinal direction on both sides of the arcuate grooves 23, 33 opened to the side of the vertical frames 22, (25, 35) are brought into close contact with the outer surface of the hinge frame (40), so that the gap is not opened between the hinge frame, i.e., the vertical frame and the hinge frame, even when the folding door is closed, opened, closed, It is possible to block the transmission of heat and sound through the display device, as well as to have a visual blocking effect.

Glass grooves 27 and 37 for fitting the glass plates G1 and G2 are formed on the opposite sides of the arcuate grooves 23 and 33. The front and rear surfaces are shown as flat surfaces, Various patterns such as a plurality of parallel stripes may be formed.

In the present embodiment, the mohair is installed on the horizontal frame, the lower end of the first and second doors, the hinge portion of the first door, and the side door provided with the door lock of the second door so as to maximize the heat and noise- The mohair may be provided on the front and rear sides of the frame in two or on both sides of the frame. Mohair may be provided on one side and a weather strip made of soft rubber or soft silicone may be provided on the other side.

The bearing B is inserted into the upper and lower ends of the hinge frame 40 so that the turning operation of the shaft pin 55 attached to the engaging gear 50 can be smoothly performed.

4, the cross-sectional shape of the hinge frame 40 is such that two circles are partially overlapped and the intermediate portion has a width smaller than the diameter of the circle, The same aluminum material can be produced by extrusion and cut to the required length.

In the drawing, reference numeral 42 denotes a reinforcing rib in the middle of the hinge frame 40, and reference numeral 44 denotes an intermediate neck portion, which is a folded state in which the first and second door assemblies 20 and 30 are in close contact In the open state).

In the present invention, in the state where the hinge frame 40 as described above is fitted into the arcuate grooves 23 and 33 formed in the vertical frames 22 and 32 of the first and second door pads 20 and 30 It is possible to prevent the occurrence of a seizure accident because there is no gap between the first and second door openings in which the fingers are inserted and also to prevent the first and second door openings 20, It can be relieved because it is covered by the hinge frame 40, but there is a margin as much as the width of the hinge frame 40.

The hinge frame 40 and the arcuate grooves 23 and 33 of the vertical frames 22 and 32 of the first and second door doors are engaged with each other in a concavo-convex manner so that the folding door is closed, The clearance of the portion is not opened at all and the concern about the exposure of the privacy through the gap between the doors can be solved.

8, the engaging gear 50 includes a fixing portion 52 having a plurality of screw holes 51 formed therein so as to be screwed to the vertical frames 22 and 32 of the first and second doors 20 and 30, And a gear portion 54 extending from the fixing portion 52 and formed with a gear 53 at an angle of 180 degrees in a semicircular shape at an outer periphery thereof. Is formed.

8, the pitch circle diameter d of the gear portion 54 is larger than the pitch circle diameter d of the fixing portion 52 And the diameter D of the addendum circle is formed to be larger than the width W of the fixing portion 52. As shown in Figure 10, Until the door 23, 30 can be folded in parallel.

2, 3, 9, and 10, when the user grasps or pushes the door handle of the second door 30, the folded door of the second door 30, Since the first door 20 is connected to the second door 30 by the engaging gear 50, the second door 30 is rotated at an angle equal to the angle at which the second door 30 is rotated, When the door is opened and the door is closed, when the handle of the second door 30 is pulled and pulled, the engaging gear 50 of the hinge engaging portion is moved to the side of the first door 20, The first door 20 and the second door 30 are closed by the same angle as the second door 30 and the first door 20 are opened by the same angle by the first door 30 and the second door 30. As shown in FIGS. 5 and 9, At this time, at the side of the second door 30, When the lock button or the lever is pressed, the folding door is locked if necessary, because the latch of the door lock is caught by the latching groove of the door frame frame.

As described above, according to the present invention, since the engagement gear is provided in the hinge coupling portion of the folding door composed of a plurality of doors, the two doors are opened and closed at the same angle, The two doors are folded until they are completely parallel so that the door can be kept in a closed state and an open state, and the hinge joint portion between the doors is provided with the hinge frame, This is because there is no fear of accidents such as back, and the gap between the hinge frame and the door is sealed by the mohair, thereby effectively blocking the air (heat or cold air) and noise transmission. And the like.

10: Doorframe 12,14: Vertical frame
16: side frame 20: 1st door
30: second door 21, 31: horizontal frame
22, 32: vertical frame 23, 33: arcuate groove
24, 34: mohair insertion grooves 25, 35: mohair
26, 36: screw fixing grooves 27, 37: glass grooves
40: hinge frame 42: reinforcing rib
44: neck portion 50: engaging gear
51: screw hole 52:
53: gear 54: gear part
55: shaft pin 60: hinge bracket
d: pitch circle diameter
D: diameter of this addendum circle
G1, G2: glass plate h:
L: Door lock P: Pivot pin

Claims

A first door 20 having one end hinged to the door frame 10 and a second door 30 hinged to the other end of the first door 20 so that the first and second doors 20, A folding door which is folded or unfolded;
The hinge connection portion between the first and second door pairs 20 and 30 has a circular arc-shaped groove 23 and 33 opened laterally in the vertical frames 22 and 32 of the first and second doors 20 and 30, Direction,
The first and second door assemblies 20 and 30 have a hinge frame 40 having a cross section having two circles partially overlapping and having an intermediate portion having a width smaller than the diameter of the circle,
The upper and lower ends of the hinge frame 40 are pivotally coupled to the upper and lower ends of the first and second door assemblies 20 and 30 so that at least one of the upper and lower ends of the hinge frame 40 And the first and second door shafts (20, 30) are interlocked at the same angle to be opened and closed.

The method according to claim 1,
The engaging gear 50 includes a fixing portion 52 having a plurality of screw holes 51 formed therein to be screwed to the vertical frames 22 and 32 of the first and second doors 20 and 30, , And a gear portion (54) extending from the gear portion (54) and formed with a gear (53) at an angle of 180 degrees in a semicircular shape at an outer periphery thereof, and a shaft pin (55) is formed at the center of the gear portion door.

The method of claim 2,
The pitch circle diameter d of the gear portion 54 is formed to be equal to the width of the fixing portion 52 and the diameter D of the addendum circle is set to be smaller than the diameter 52), so that the door (23, 30) is engaged and rotated so as to be folded in parallel.

The method according to claim 1,
Wherein a bearing (B) is inserted into at least one of the upper and lower ends of the hinge frame (40).

The method according to claim 1,
And mohair insertion grooves 24 and 34 are formed on both sides of the arcuate grooves 23 and 33 along the longitudinal direction so that the mohair 25 and 35 are brought into close contact with the outer surface of the hinge frame 40. [ door.

The method according to claim 1,
Wherein the longitudinal frames (22, 32) are formed with glass grooves (27, 37) for fitting glass plates (G1, G2) on opposite sides of the arcuate grooves (23, 33).

The method according to claim 1,
Wherein a reinforcing rib (42) is formed at an intermediate portion of the hinge frame (40).