KR102182602B1 - Folding door system - Google Patents

Abstract

The present invention provides a foldable door system, which narrows a rotation radius of a door to increase space efficiency, simplifies assembly and installation of the door to increase productivity and work efficiency, allows the door to be stably opened and closed to prevent noise, and greatly improves durability of provided components to reduce a cost for maintenance and increase reliability for products.

Description

Folding door system

The present invention relates to a folding door system, and more specifically, the door rotates in a narrow radius so that space can be efficiently used, and the door can be opened and closed stably, as well as assembly and installation of each component. It relates to a folding door system that improves productivity by making it simple, greatly improves durability and reliability of products, and reduces installation costs and maintenance costs to improve economic efficiency.

As is well known, a door device is installed at an entrance of a building or an indoor entrance to enable movement to a partitioned space, and is generally classified into an opening and closing method, a sliding door method, and a folding method using a mixture thereof.

The door device of the opening and closing method is largely composed of a door frame and a door hinged to be installed on one side of the door frame so as to be rotatable, and the door is rotated forward or backward by 90 degrees to open the door so that a person can enter and exit. will be.

As a representative example of the casement door device, “space-saving hinged door using a leaf spring” of Registration Patent Publication No. 10-1175058 has been proposed, and its configuration is that the hinged door unit 1 and a handle are attached to the door. When the door is opened by dividing it into the door part (8), the width of the door is reduced to form a door that can reduce the opening space, and the plate spring (2) installed on the inside of the door part (1) with a hinge and the above A first Java link horizontal bar (3a) coupled to the leaf spring (2) and a first Java link link (3) and a first Java link vertical bar (3b) that are interlocked with the first Java link horizontal bar (3a), A second Jabara link crossing bar (4b) and a second Java link (4) moving in conjunction with the first Jabara vertical bar (3b), and a third Java link crossing bar (5b) that is moved in connection with the second Jabara link. And a third Java link 5 and a third Java link horizontal bar 5a connected to the third Java link 5 is connected to the distance adjusting nut 5c of the door part 8 to which the handle is attached, , To reduce the rotation radius of the door by sliding the leaf spring (2) so that a part (1a) of the hinged door part (1) can be inserted into the door part (8) with a handle attached according to the opening and closing of the door. I did it.

On the other hand, as a representative example of the sliding door device, the "sliding door system" of Korean Patent Publication No. 10-1548663 has been proposed, and the configuration is a first wall having a first window formed therethrough, and a spaced apart from the first wall. It is installed on a wall of a structure including a second wall in which a second window is formed at a position facing the first window and is disposed to face each other to open and close the first window and the second window. It is installed between the first wall and the second wall so as to be able to move up and down between a first closed position that closes the first window and a first open position that is spaced upward from the first closed position to open the first window. First door; Between the first wall and the second wall so as to be able to move up and down between a second closed position that closes the second window and a second open position that is spaced downward from the second closed position to open the second window. A second door installed; A drive wire having one end coupled to the first door and the other end coupled to the second door; And at least one pulley that is positioned above the first door and the second door, and supports the drive wire so that when one of the first door and the second door is raised, the other door is lowered. And, when the first door is disposed in the first closed position, the second door is disposed in the second closed position, and the first window and the first door are provided by the first door and the second door. The two windows are closed at the same time, and when the first door rises from the first closed position to the first open position, the second door is interlocked with it, and the second door descends from the second closed position to the second open position. The window and the second window are opened simultaneously.

The above-described opening/closing type door device has a problem of receiving a lot of restrictions on the installation space because a space equal to or larger than the width of the door must be provided in the front or rear of the door to open the door, and the sliding type door device also Since the door has to be slid to the wall surface of one side or the other side of the door, there is a problem in that the efficiency of the space is deteriorated because an article or the like cannot be placed there.

In order to solve this problem, as a representative example of a folding door device in which the opening and closing method and the sliding door method are mixed, Patent Publication No. 10-1754763 has been proposed, and the configuration of the first and second doors 20 and 30 A connecting frame body (3) which is in contact with each of the side edge faces (21,31) so as to be able to rotate relative to each other between the side edge faces (21,31) facing each other, and connects the doors (20,30); A boss block (5) inserted into the inner space (S) of the connecting frame body (3) and extending in the axial direction of the connecting frame body (3) to form first and second fastening holes (27,28); The first and second hinge pins (25, 26) fastened to the first and second fastening holes (27, 28), respectively, to be rotatably mounted on the boss block (5) while being engaged with each other. And second interlocking gears 6 and 7; And each free end is integrally coupled on the interlocking gears (6, 7), and at the end portions of the upper and lower edges (22, 32) of the door (20, 30) adjacent to the side edge (21, 31) Each of the fixed ends is integrally coupled to each other so that the first door panel 20 rotates synchronously with the first interlocking gear 6 and the second door 30 with the second interlocking gear 7 The first and second fixing plates 8 and 9 are included, and the connection frame 3 is formed to have an arc-shaped cross-sectional shape at both side ends, and the side end edge surfaces 21 and 31 and A pair of sliding support surfaces 11 and 12 contacting each of them so as to be rotatable; And a pressing groove (13) which is continuously formed between the pair of sliding support surfaces (11, 12), and is concave inwardly to press the boss block (5) inserted into the inner space (S). And, the boss block 5 is extended in the axial direction to form the first and second fastening holes 27 and 28, and the front and rear flat surfaces 19 are the pressing grooves 13 ) And the body 15 in contact with; And a support rib 17 protruding from the side surface of the body 15 and coming into contact with the inner side of the pair of sliding support surfaces 11 and 12, wherein the first and second doors are folded. It was possible to reduce the space limitation by narrowing the rotational space, but the connection between the connection frame and the boss block was not strong, and the boss block was damaged during long-term use, and the cost of maintenance was increased due to frequent replacement. There was a downside.

0001) Korean Registered Patent Publication No. 10-1175058 0002) Korean Registered Patent Publication No. 10-1548663 0003) Korean Patent Publication No. 10-1754763 0004) Korean Patent Registration No. 10-1903775

Therefore, in order to solve the above problems, the present invention increases the efficiency of space by narrowing the turning radius of the door, and at the same time simplifies the assembly and installation of the door to increase productivity and work efficiency, and the stable opening and closing of the door is possible. There is an object conceived to provide a folding door system that can prevent noise generation by enabling it, while greatly improving the durability of the parts provided, thereby reducing cost according to maintenance and increasing the reliability of the product.

In order to achieve the above object, in the present invention, an upper, lower frame, and a pair of side frames provided in a certain length are assembled in a square shape and installed at the entrance of a building or at the entrance of a partitioned interior space, and one side of the upper frame The door frame with the speed reduction device integrally installed in the door frame, the upper and lower horizontal bars and a pair of side vertical bars provided in a predetermined length are assembled in a square shape, and first and second doors rotatably installed on the door frame, and the second door A roller part installed in the middle part of the upper horizontal table of the 2 door to support the second door so that it can rotate and move stably, and a rotation part that connects the first and second doors so that they can be rotated are installed at the top and bottom, respectively. In the folding door system consisting of a rotating connecting rod, the roller part is a fixing bracket installed and fixed in an upper middle portion of the upper horizontal base of the second door, and a shaft bolt which is vertically installed through the upper part from the lower part of the fixing bracket. And, a first nut that is screwed with the shaft bolt to fix the shaft bolt to the fixing bracket, a bushing installed on the shaft bolt so as to be located above the first nut, and the shaft so as to be located above the bushing A first bearing built on the bolt, and a shaft built on the shaft bolt so as to be positioned above the first bearing, and a wheel is rotatably mounted on both front and rear sides, and a certain length on one side to contact the speed reduction device A fixed body in which a protruding ground rod is integrally formed, a second bearing installed on the shaft bolt so as to be positioned above the fixed body, and the second bearing, the fixed body, the first bearing and It is characterized in that it consists of a second nut that fixes the bushing so that it does not come off.

In addition, the rotating part is provided in a pair so that the first and second doors can be rotated and opened and closed at the same time by being coupled and installed at the upper and lower ends of the rotating connecting rod, respectively, and the lower part can be tightly fitted to the rotating connecting rod. It is injection-molded in the same shape so that the upper rim is protruded to form a locking jaw, and a gear housing is formed so that two shaft holes are respectively penetrated therein, and a lower portion is inserted into each shaft hole formed in the gear housing, and a predetermined position on the outer periphery A pair of fixed shafts integrally formed with a stepped shaft, and a shaft hole is formed in the center so as to be respectively installed on the fixed shaft, and a pair of gears having a plurality of coupling protrusions and a plurality of fastening holes penetrating through the upper surface, and the fixing A shaft hole is formed to pass through one side of the upper surface so that it can be accumulated on the shaft, a plurality of coupling holes penetrated so that a plurality of coupling protrusions formed in the gear can be inserted, The fastening hole and the other side of the upper surface are formed with a pair of rotation brackets through which a plurality of fixing holes are penetrated, and a plurality of fixing holes are formed to pass through at a position coincident with the plurality of fixing holes formed on the other side of the upper surface of the rotation bracket, It is characterized in that it consists of a pair of connecting brackets that are inserted and coupled to the top or bottom of the side vertical bar of the first and second doors, respectively.

In addition, two display protrusions are integrally protruded on an upper portion of one of the pair of gears, and one display protrusion is integrally protruded on an upper portion of the other gear. It is characterized in that the pair of gears can be easily assembled by engaging one display protrusion so as to be positioned between the two display protrusions.

In addition, the upper frame of the door frame has a movable groove formed in the longitudinal direction in the lower middle portion, and guide rails are formed to protrude in the longitudinal direction respectively to face each other on both sides of the movable groove, A groove is formed on the outer periphery of the wheel so that the groove of the wheel is seated on the guide rail so as to stably rotate.

In addition, a protective film is attached to the surface of the rotating connecting rod to create a variety of designs and at the same time protecting the rotating connecting rod, but the protective film is fixed in the middle of the front and rear surfaces of the rotating connecting rod in the longitudinal direction so that the protective film is not lifted or separated. It is characterized in that it is installed to be integrated.

As described above, by providing the folding door system according to the present invention, the rotation radius of the door is narrowed to increase space efficiency, and at the same time, the assembly and installation of the door are simplified to increase productivity and work efficiency, and the door is stable. By enabling the opening and closing, noise generation is prevented, while the durability of the parts provided is greatly improved, thereby reducing costs and increasing reliability of products.

1 is a schematic front view of a folding door system according to the present invention.
Figure 2 is an exemplary side cross-sectional view of the door frame and door of the folding door system according to the present invention.
Figure 3 is an exploded perspective view showing a roller part of the folding door system according to the present invention.
Figure 4 is a perspective view showing a roller part of the folding door system according to the present invention.
Figure 5 is an exploded perspective view showing a rotating part of the folding door system according to the present invention.
Figure 6 is a perspective view showing an enlarged portion of the rotating part of the folding door system according to the present invention.
Figure 7 is an exemplary side cross-sectional view showing the combined state of Figure 6;
Figure 8 is an enlarged plan view showing the rotating part of the folding door system according to the present invention.
Figure 9 is a plan view showing the operating state of the folding door system according to the present invention.

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

The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. Detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

That is, in the configuration of a conventional folding door system, the upper and lower frames 12 and 14 and a pair of side frames 16 provided in a certain length are assembled in a square shape, so that they are placed at the entrance of the building or the entrance of a partitioned interior space. The door frame 10 is installed, and the speed reducing device 18 is integrally installed on one side of the upper frame 12, and the upper and lower horizontal bars 22, 24, 32, 34, which are provided in a predetermined length. And a pair of side uprights (26) (36) are assembled in a square shape, and the first and second doors (20) (30), which are rotatably installed on the door frame (10), and the second door (30) The roller unit 100 is installed in the upper middle portion of the upper horizontal bar 32 and supports the second door 30 so that it can stably rotate and move, and the first and second doors 20 and 30 The rotating part 200 for rotatably connecting is made of a rotating connecting rod 40 installed at the upper and lower parts, respectively. In the folding door system according to the present invention, in particular, the door frame 10 and the roller part 100 and the rotating part ( 200).

First, the roller part 100 has a fixing bracket 110 that is installed and fixed in the upper middle of the upper horizontal base 32 of the second door 30, and from the bottom of the fixing bracket 110 to the top. A shaft bolt 120 that is vertically installed through it, a first nut 130 that is screwed with the shaft bolt 120 to fix the shaft bolt 120 to the fixing bracket 110, and the first nut ( A bushing 140 installed on the shaft bolt 120 so as to be positioned above 130, and a first bearing 150 built on the shaft bolt 120 so as to be positioned above the bushing 140 , It is installed on the shaft bolt 120 so as to be located above the first bearing 150, and wheels 162 are rotatably mounted on both front and rear sides, respectively, and one side is in contact with the speed reducing device 18. A fixed body 160 integrally formed with a grounding rod 164 protruding a predetermined length so as to be formed, and a second bearing 170 installed on the shaft bolt 120 so as to be positioned above the fixed body 160, A second nut 180 is screwed to the shaft bolt 120 to fix the second bearing 170, the fixing body 160, the first bearing 150, and the bushing 140 so as not to be separated from each other.

Here, the fixing bracket 110 is a means for integrally connecting the entire roller part 100 with the second door 30, and the metal plate body is bent in a predetermined shape, and the shaft bolt 120 is located at the center of the upper surface. A shaft hole 112 is formed so as to be inserted therethrough, and a plurality of fastening holes 114 are formed on both sides of the upper surface to pass through, and a plurality of screws (N) are fastened through the fastening hole 114 so that the second It is integrally installed on the upper horizontal stand 32 of the door 30.

The shaft bolt 120 is provided with a conventional bolt having a screw thread formed on the outer periphery and is inserted through the shaft hole 112 from the bottom to the top of the fixing bracket 110, and is inserted into the upper portion of the fixing bracket 110. On the exposed shaft bolt 120, the first nut 130, the bushing 140, the first bearing 150, the fixed body 160, the second bearing 170, and the second nut 180 are sequentially It is built and assembled integrally by means of rotation or screwing.

The first nut 130 is screwed to the shaft bolt 120 to perform a function of firmly fixing the shaft bolt 120 to the fixing bracket 110, and in some cases, two or more It can be provided.

The bushing 140 is provided in the form of a single tube and is installed on the shaft bolt 120 so as to be positioned above the first nut 130, and between the first nut 130 and the first bearing 150 A function of supporting the first bearing 150 so that the rotation of the first bearing 150 can be smoothly performed while maintaining a predetermined distance.

The first bearing 150 is installed on the shaft bolt 120 so as to be positioned above the bushing 140 to facilitate rotation of the fixing bracket 110.

The fixed body 160 is provided by processing a block made of metal in a predetermined shape, and a plurality of wheels 162 are rotatably mounted at the front and the rear respectively, and the outer periphery of the wheel 162 is recessed ( 162'), and the upper frame 12 of the door frame 10 has a movable groove 12a formed in a longitudinal direction at a lower middle portion, and guide rails respectively facing each other on both sides of the movable groove 12a. (12b) is formed to protrude in the longitudinal direction so that the groove 162' of the wheel 162 is seated on the guide rail 12b so that the wheel 162 can rotate and move stably, so that the wheel 162 is a guide rail ( It is possible to prevent deviation from 12b) and minimize noise generation.

In addition, a grounding rod 164 of a certain length is integrally formed on one side of the fixed body 160 so that the grounding rod 164 first comes into contact with the speed reducing device 18 installed on the door frame 10. The first and second doors 20 and 30 are closed at a low speed so that the impact can be relieved.

The second bearing 170 is installed on the shaft bolt 120 so as to be positioned above the fixing body 160 to facilitate rotation of the fixing bracket 110.

The second nut 180 is screwed to the shaft bolt 120 and performs a function of integrally fixing the second bearing 170 on the shaft bolt 120 so as not to be separated.

On the other hand, the rotating part 200 is provided in a pair so that the first and second doors 20 and 30 are rotated and opened and closed at the same time by being coupled and installed at the upper and lower ends of the rotating connecting rod 40, respectively. As, the lower part is injection-molded in the same shape so that it can be tightly fitted to the rotating connecting rod 40, but the upper rim is protruded to form a locking protrusion 212, and two shaft holes 214 are respectively penetrated therein. A pair of fixed shafts 220 formed integrally with a stepped shaft 222 formed integrally with a lower portion is inserted into the formed gear housing 210 and the shaft hole 214 formed in the gear housing 210, respectively, at a predetermined position around the outer periphery, the A pair of gears 230 having a shaft hole 232 penetrating through each of the fixed shaft 220, and having a plurality of coupling protrusions 234 and a plurality of fastening holes 236 through the upper surface. And, a shaft hole 242 is formed to penetrate one side of the upper surface so that it can be accumulated on the fixed shaft, and a plurality of coupling holes penetrated so that a plurality of coupling protrusions 234 formed in the gear 230 can be inserted ( 244), a plurality of fastening holes 246 penetrated at a position coincident with the plurality of fastening holes 236, and a pair of rotating brackets 240 formed to penetrate a plurality of fixing holes 248 on the other side of the upper surface, and , A plurality of fixing holes 252 are formed to pass through at a position coincident with a plurality of fixing holes 248 formed on the other side of the upper surface of the rotation bracket 240, and the lower part is the first and second doors 20 It consists of a connection bracket 250 that is inserted into and coupled to the upper and lower sides of the side uprights 26 and 36 of 30, respectively.

That is, the rotation part 200 connects the first and second doors 20 and 30 to each other so that the first and second doors 20 and 30 are folded on the door frame 10. As to perform the function, the gear housing 210 and the fixed shaft 220, a pair of gears 230, a pair of rotation brackets 240 and a pair of connection brackets 250 are provided in two sets, and the rotation connecting rod ( It is assembled and installed at the top and bottom of 40), respectively.

First, the gear housing 210 performs a function of providing a space so that the fixed shaft 220 and a pair of gears 230 can be seated and installed therein, and has the same shape as the rotating connecting rod 40. It is provided by injection molding using synthetic resin so that the upper edge is protruded to form a locking protrusion 212 so that it can be hung on the upper or lower end of the rotating connecting rod 40 and fixed therein, and a certain distance is maintained inside. The two shaft holes 214 are formed to pass through each.

The fixed shaft 220 is vertically inserted and fixed in the shaft hole 214 of the gear housing 210, and the pair of gears 230 are respectively installed to be rotatable, and two metal rods having a predetermined length Each is provided, but the lower outer periphery may be integrally formed with a stepped 222 so that it can be caught and fixed at the inlet side of the shaft hole 214.

The pair of gears 230 performs a function of transmitting the rotational force of the second door 30 to the first door 20, and is provided by injection molding using synthetic resin, and the fixed shaft 220 at the center ), the shaft hole 232 is formed to pass through, and a plurality of coupling protrusions 234 protrude on the upper surface of the periphery thereof, and a plurality of fastening holes 236 are formed to pass through.

At this time, two display protrusions 238 are integrally formed on the upper part of any one of the pair of gears 230, and one display protrusion 238' is integrally formed on the upper part of the other gear 230. It is preferable to be formed so as to protrude to the fixed shaft 220 so that one display protrusion 238 ′ is positioned between the two display protrusions 238 to be engaged so that the pair of gears can be easily assembled. Do.

The pair of rotation brackets 240 are each coupled with the pair of gears 230 to transmit rotational force, and are provided by processing a metal plate body in a predetermined shape, but through a shaft hole 242 having a predetermined diameter on the upper surface. And forming a plurality of coupling holes 244 through which a plurality of coupling protrusions 234 formed in the gear 230 can be inserted, and a plurality of coupling holes 236 formed in the gear 230 A plurality of fixing holes 246 are formed to pass through at the same position so that they can be respectively coupled to the upper portion of the gear 230 by fastening screws (N).

The pair of connection brackets 250 are each coupled to the pair of rotation brackets 240 to transmit the rotational force of the pair of gears 230 to the first and second doors 20 and 30, and the metal plate body Is provided by bending it at a right angle, and the upper or lower portion thereof is formed to penetrate the plurality of fixing holes 252 in the same manner as the plurality of fixing holes 248 formed in the rotation bracket 240, The first and second doors 20 and 30 that are adjacent to and are inserted into the upper or lower end of the side uprights 26 and 36 and then installed to be integrated by fastening the screws (N).

In addition, by attaching the protective film 42 to the surface of the rotating connecting rod 40 to create a variety of designs and at the same time to protect the rotating connecting rod 40, the rotating so that the protective film 50 is not lifted or separated. It is preferable to install the fixing rod 300 integrally in the longitudinal direction in the middle of the front and rear surfaces of the connecting rod 40.

Assembly and installation of the folding door system according to the present invention consisting of a plurality of components as described above first, the first nut 130 and the bushing 140 on the fixing bracket 110 by the shaft bolt 120, The first bearing 150, the fixed body 160, the second bearing 170 and the second nut 180 are provided with a roller unit 100 integrally built up, and then the upper horizontal of the second door 30 The roller part 100 is installed by screwing through the fastening hole 114 formed in the fixing bracket 110 at the upper middle of the base 32.

On the other hand, the upper and lower sides of the side vertical stand 26 of the first door 20 and the side vertical stand 36 of the second door 30 adjacent to both sides of the rotating connecting rod 40, respectively, the connection brackets 250 ) In the state of inserting the upper or lower portions of each of them integrally with a separately provided screw (N), and then vertically inserting a pair of fixed shafts 220 into the shaft hole 214 of the gear housing 210, respectively, Fixing and inserting a plurality of coupling holes 244 formed in the pair of rotation brackets 240 into a plurality of coupling protrusions 234 formed on the pair of gears 230, and fastening holes 236 of the gear 230 ) And the fastening hole 246 of the rotation bracket 240 are combined to be integrated with a screw (N), and then the pair of gears 230 are respectively installed on the fixed shaft 220, but two One of the gears 230 on which the display protrusions 238 are formed is first installed, and then the other gear 230 is installed so that one display protrusion 238' is positioned between the two display protrusions 238. will be.

Thereafter, when the fixed shaft 220 and a pair of gears 230 and a pair of rotating brackets 240 are installed on the gear housing 210, the upper end of the rotating connecting rod 40 and After tightly inserting and fixing the gear housing 210 at the bottom, the fixing hole of the connection bracket 250 installed on the side uprights 26 and 36 of the first and second doors 20 and 30 After matching the fixing holes 248 formed in the pair of rotation brackets 240 with 252, the rotation parts 200 may be installed by respectively fastening them so as to be integrated with screws N.

In this way, a roller part 100 is installed in the second door 30, and a rotating part 200 connecting the rotating connecting rod 40 and the first and second doors 20 and 30 is installed. A speed reducing device 18 is installed on the upper frame 12 of the door frame 10, and a wheel installed on the fixed body 160 of the roller unit 100 on the guide rail 12b formed on the upper frame 12 After seating the groove 162' of 162, the door frame 10 is formed, and then the upper and lower portions of one side of the first door 20 can be rotated to the upper frame 12 and the lower frame 14, respectively. The hinge is fixed, and glass (not shown) is inserted into the first and second doors 20 and 30 and fixed.

At this time, a protective film 50 printed in various designs is adhered to the surface of the door frame 10, the first and second doors 20, 30, and the rotating connecting rod 40 applied to the present invention, and the rotating connecting rod In the middle of 40, the protective film 50 may be fixedly installed in the longitudinal direction so that the protective film 50 is not lifted.

On the other hand, in this way, the function of the folding door system according to the present invention, in which a plurality of component parts are integrally assembled and installed at the entrance of the building or the entrance of the partitioned interior space, first grabs the second door 30 and pulls it to one side. When pushed or pushed, a plurality of wheels 162 mounted on the fixed body 160 of the roller unit 100 rotates stably along the guide rail 12b formed on the upper frame 12 of the door frame 10 At the same time, the fixing bracket 110 and the shaft bolt 120, the first nut 130, the bushing 140, and the second nut 180 installed on the upper horizontal base 32 together with the second door 30 It is rotated in one direction at the same time by the first and second bearings 150 and 170.

Subsequently, when the second door 30 rotates in one direction, one of the fixed shaft 220 installed perpendicularly to the gear housing 210 of the rotating part 200 installed on the rotating connecting rod 40 As the gear 230 rotates in one direction and the other gear 230 engaged with the gear 230 rotates in the reverse direction, the first door 20 rotates around the hinge, The second door 20 and 30 are completely folded and the entrance is opened.

On the other hand, when the open entrance is closed, first, when the second door 30 is grabbed and pulled or pushed to the other side, the second door 30 is stably rotated and moved by the roller unit 100, At this time, one gear 230 installed on the fixed shaft 220 of the rotating part 200 installed on the rotating connecting rod 40 rotates in the reverse direction, and the other gear 230 engaged with it also rotates in one direction. While rotating, the first door 20 also rotates around the hinge so that the first and second doors 20 and 30 are completely unfolded on the door frame 10 and the entrance is closed.

As described above, in the folding door system according to the present invention, the groove 162 ′ of the wheel 162 mounted on the fixed body 160 of the roller unit 100 is seated on the guide rail 12b formed on the door frame 10 The first and second doors 20 and 30 can be opened and closed quietly as they rotate and move stably, and a plurality of parts are simply assembled and installed in the gear housing 210 to provide the rotating part 200 And, by simply mounting the rotating part 200 to the rotating connecting rod 40 to interlock the first and second doors 20 and 30, the efficiency and productivity of work are greatly improved, and the It is an invention with high industrial applicability because the gear housing 210 and the rotating connecting rod 40 are rigidly coupled to greatly improve the durability of the entire rotating part 200 to reduce maintenance costs. .

10: door frame 12: upper frame 12a: moving groove
12b: guide rail 14: lower frame 16: side frame
18: speed reduction device 20: first door 30: second door
40: rotating connecting rod 50: protective film 100: roller part
110: fixing bracket 120: shaft bolt 130: first nut
140: bushing 150: first bearing 160: fixed body
162: wheel 170: second bearing 180: second nut
200: rotating part 210: gear housing 220: fixed shaft
230: gear 240: rotation bracket 250: connection bracket
300: fixture N: screw

Claims (5)

The upper and lower frames and a pair of side frames provided in a certain length are assembled in a square shape and installed at the entrance of the building or the entrance of a partitioned interior space, and a door frame with a speed reduction device integrally installed on one side of the upper frame, The first and second doors are assembled in a square shape with the upper and lower horizontal bars and a pair of side vertical bars provided in a certain length so as to be rotatably installed on the door frame, and installed in the upper middle of the upper horizontal bar of the second door In the folding door system comprising a roller portion supporting the second door to stably rotate and move, and a rotating connecting rod installed at the upper and lower portions, respectively, a rotating portion connecting the first and second doors so that they can be rotated,
The roller part
A fixing bracket installed and fixed in the middle portion of the upper horizontal base of the second door,
A shaft bolt that penetrates from the bottom of the fixing bracket to the top and is vertically installed,
A first nut that is screwed with the shaft bolt to fix the shaft bolt to the fixing bracket,
A bushing installed on the shaft bolt so as to be positioned above the first nut,
A first bearing installed on the shaft bolt to be located above the bushing,
It is installed on the shaft bolt so as to be located above the first bearing, and a wheel is rotatably mounted on both sides, and a fixed body integrally formed with a ground rod protruding a certain length so as to contact the speed reducing device on one side. ,
A second bearing installed on the shaft bolt so as to be located above the fixed body,
A folding door system comprising a second nut that is screwed to the shaft bolt to fix the second bearing, the fixed body, the first bearing, and the bushing so that they do not separate. The method of claim 1,
The rotating part
It is provided in a pair so that the first and second doors can be rotated and opened and closed at the same time by being coupled and installed at the upper and lower ends of the rotating connecting rod, respectively,
The lower part is injection-molded in the same shape so that it can be tightly fitted to the rotating connecting rod, but the upper rim is protruded to form a locking protrusion, and a gear housing formed in which two shaft holes are respectively penetrated,
A pair of fixed shafts each having a lower portion inserted into the shaft hole formed in the gear housing, and having a stepped integrally formed at a predetermined position on the outer periphery;
A pair of gears having a shaft hole penetrating through the center so as to be respectively installed on the fixed shaft, and having a plurality of coupling protrusions and a plurality of fastening holes penetrating through the upper surface thereof,
A shaft hole is formed to pass through one side of the upper surface so that it can be accumulated on the fixed shaft, a plurality of coupling holes penetrated so that a plurality of coupling protrusions formed in the gear can be inserted, and a plurality of coupling holes penetrated at a position coincident with the plurality of fastening holes. A pair of rotating brackets formed through a plurality of fastening holes and a plurality of fixing holes on the other side of the upper surface,
A plurality of fixing holes are formed to pass through at a position coincident with a plurality of fixing holes formed on the other side of the upper surface of the rotation bracket, and the upper or lower part is inserted into the upper or lower side of the first and second doors, respectively. A folding door system, characterized in that consisting of a pair of connecting brackets. The method of claim 2,
Two display protrusions are integrally protruded on the upper part of any one of the pair of gears, and one display protrusion is integrally protruded on the upper part of the other gear. Foldable door system, characterized in that one display projection is engaged so as to be positioned between the projections so that the pair of gears can be easily assembled. The method of claim 1,
The upper frame of the door frame has a movable groove formed in a longitudinal direction in a lower middle portion, and guide rails are formed to protrude in the longitudinal direction respectively to face each other on both sides of the movable groove, and a plurality of wheels installed on the fixed body of the roller part A folding door system, characterized in that a groove is formed in the outer periphery so that the groove of the wheel is seated on the guide rail to stably rotate and move. The method of claim 1,
A protective film is attached to the surface of the rotating connecting rod to create a variety of designs and at the same time protecting the rotating connecting rod.However, a fixing bar is integrated in the longitudinal direction in the middle of the front and rear surfaces of the rotating connecting rod so that the protective film is not lifted or separated. Folding door system, characterized in that installed to be.

Images