KR100512253B1 - Sliding door - Google Patents

Abstract

The present invention discloses a sliding door that can keep the opening and closing operation of the door smoothly and quietly. The present invention is a door frame having an entrance formed by the upper frame attached to the ceiling and the left and right frames attached to the wall to be compatible with both ends of the upper frame and a pair of first and second guide rails are formed, It is installed to open and close the doorway of the door frame in the left and right directions and consists of first and second doors with guide grooves formed on the lower surface. The upper roller assembly installed on the upper part of the first and second doors includes a plurality of upper rollers capable of rolling contact with the first and second guide rails of the door frame, and an upper roller with respect to the first and second guide rails of the door frame. It has a roller height adjustment means that can raise and lower them. The lower roller assembly installed at the bottom corresponding to the center of the door frame has a plurality of lower rollers which are projected from the bottom so as to make a cloud contact with the guide grooves of the first and second doors. Further, the linear motion guide mechanism guides the opening and closing operations of the first and second doors to each other in a linear motion. According to the present invention, the lower roller assembly of the lower roller assembly to be fitted to the guide groove of the door can be easily installed in the door frame in a state in which the door is erected by the structure. In addition, it is possible to accurately seat the upper rollers of the door to the guide rail of the door frame, and to accurately seat the lower rollers of the bottom in the guide groove of the door to keep the opening and closing operation smooth and quiet. And the opening and closing movements of the first and second doors are guided in a linear motion with respect to each other, which effectively prevents the doors from swinging, thereby realizing smooth and quiet opening and closing of the gaps. Sound insulation effect can be greatly improved.

Description

Sliding Door {SLIDING DOOR}

The present invention relates to a sliding door, and more particularly, to a sliding door capable of smoothly and quietly maintaining the opening and closing operation of a window.

As is well known, windows and doors are developed in various forms and structures, and windows and doors are divided into sliding doors and sliding doors according to the opening and closing methods. The sliding door is opened by sliding the door or window into the groove of the door frame and sliding along the groove. The sliding door is opened by rotating the door around the hinge. One door is composed of one sliding door and two pair is called double sliding door.

As an example of such a sliding door, the registered utility model No. 300472 shows an upper frame of a door frame having a guide rail that guides the movement of the door by supporting a roller fixed to the ceiling of the building and mounted on the top of the door, and the building. The lower frame of the door frame is fixed to the bottom of the support for supporting the bottom of the door is disclosed. And the lower surface of the upper frame is formed with a channel (Channel) for receiving the upper end of the door, and the upper surface of the lower frame is coupled to the guide groove formed in the lower end of the door is a projection guide to prevent the door swing Consists of.

However, the conventional sliding door is mounted on the guide rail of the upper frame, the door is coupled to the door frame so that the groove of the door is coupled to the guide of the lower frame, and then the roller is assembled to the door by screwing the bar, the upper There is a disadvantage that it is very difficult to accurately seat the roller on the guide rail of the frame. In addition, in order to fit the upper and lower ends of the door to the channel of the upper frame and the guide of the lower frame, align the upper part of the door to the channel of the upper frame with the door tilted with respect to the door frame, and then raise the door Since the guide grooves of the doors need to be fitted to the guides, the installation of the doors takes a lot of effort and time, which greatly reduces workability and increases the installation cost. In particular, when the roller of the door is not seated correctly on the guide rail of the upper frame, the opening and closing operation of the door involves a problem that is not smooth.

On the other hand, adequate clearance should be provided between the guide rail and roller, guide and groove for assembly and opening of the door. However, the clearance gap in the sliding door not only causes the door to swing when opening and closing the door, but also causes a lot of vibration and noise, and also induces the guide rail, the roller, the guide and the groove to be tightly opened by the inclined opening of the door. Make the closing operation difficult and difficult. Problems that occur during the opening and closing of the door are causing a decrease in reliability and competitiveness. Therefore, a sliding door that can implement a simple, smooth and quiet opening operation is required, but the sliding door that can satisfy this situation is not developed.

The present invention has been made to solve the various problems of the prior art as described above, an object of the present invention is to provide a sliding door that can be easily installed in a state in which the door is upright.

It is another object of the present invention to provide a sliding door that can seat the upper rollers of the door accurately on the guide rail of the door frame, and accurately seat the lower rollers of the bottom on the guide groove of the door to keep the opening and closing operation smooth and quiet. .

Another object of the present invention is to provide a sliding door that can realize a smooth and quiet opening and closing operation of the door is effectively prevented while the opening and closing of the first door and the second door is guided in a linear motion with respect to each other. have.

It is still another object of the present invention to provide a sliding door that can closely maintain the airtightness of a gap to greatly improve the sealing and soundproofing effect.

A feature of the present invention for achieving the above object is that the upper frame is attached to the ceiling and the pair of first and second guide rails are formed along the longitudinal direction, and is attached to the wall to be compatible with both ends of the upper frame A door frame having a doorway formed by left and right frames; First and second doors which are installed to open and close the doorway in the left and right directions, and having guide grooves formed in a length direction on a lower surface thereof; A plurality of upper rollers which are installed on the upper parts of the first and second doors and which are in contact with the first and second guide rails of the door frame and the upper rollers with respect to the first and second guide rails of the door frame; An upper roller assembly having a roller height adjustment means; A lower roller assembly installed at a bottom corresponding to the center of the door frame, the lower roller assembly having a plurality of lower rollers protruding from the bottom so as to contact the guide grooves of the first and second doors; The sliding door comprises a linear motion guide means for guiding the opening and closing operations of the first and second doors with respect to each other in a linear motion.

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

First, referring to FIGS. 1 to 4, the door frame 10 of the sliding door according to the present invention includes an upper frame 11 installed on the ceiling 1 of the building. A pair of first guide rails 12 and second guide rails 13 are formed on both sides of the lower surface of the upper frame 11 so as to be bisected in the longitudinal direction, and between the first and second guide rails 12 and 13. The passages 14 and 15 are formed respectively. The left extension plate portion 16, the right extension plate portion 17, and the central extension plate portion 18 are formed under the first and second guide rails 12 and 13 of the upper frame 11. By forming the left and right extension plates 16 and 17 and the central extension plate 18, the lower portion of the upper frame 11 has a first channel (19) and a second shape having a “c” shape extending downward. Channel 20 is formed. In addition, fixing grooves 21 are formed on the inner surfaces of the left and right extension plates 16 and 17 and on both side surfaces of the central extension plate 18, respectively, along the longitudinal direction.

Both ends of the upper frame 11 is fixed to the upper end of the left frame 22 and the right frame 23 to be installed on both sides of the wall (2), the lower ends of the left and right frames (22, 23) It is fixed to the bottom 3 of the. Channels 24 and 25 are formed on the inner surfaces of the left and right frames 22 and 23, respectively, and fixing grooves 26 are formed on the inner surfaces of the channels 24 and 25, respectively, along the longitudinal direction. have. As such, the door frame 10 forms the doorway 27 by the combination of the upper frame 11 and the left and right frames 22 and 23. 1 to 3 does not show a lower frame that is installed on the floor 3 of the building constituting the door frame 10, in the present embodiment, the lower frame is buried or projected on the floor 3 of the building as needed It can also be installed as a mold. The upper frame 11 and the left and right frames 22 and 23 of the door frame 10 may be manufactured by extrusion molding of aluminum.

In addition, the sliding door of the present invention includes a first door 30 and a second door 40 which are installed to open and close the doorway 27 of the door frame 10 in the left and right directions. Each of the first and second doors 30 and 40 is composed of rectangular edges 31 and 41 and plate glass 32 and 42 fixed to the edges 31 and 41. In the present embodiment, the edges 31 and 41 of the first and second doors 30 and 40 may be made of aluminum or a square cross-section wood that is extruded from a material, and the first and second doors ( 30, 40) The whole may be composed of wood or Medium Density Fiber (MDF) as required.

As shown in Fig. 2, Fig. 9 and Fig. 11, upper portions of the edges 31 and 41 are provided with installation grooves 33 and 43, each of which is open upward, and upper ends of the edges 31 and 41, respectively. Is partially concealed in the first and second channels 19 and 20 of the upper frame 11. When the edges 31 and 41 of the first and second doors 30 and 40 are fitted to the channels 24 and 25 of the left and right frames 22 and 23, respectively, the doorway 27 of the door frame 10 It is blocked by the first and second doors 30 and 40. Guide grooves 34 and 44 and fixing grooves 35 and 45 are formed on the lower surfaces of the edges 31 and 41, respectively, and the fixing grooves 35 and 45 are formed on one side of the edges 31 and 41. It is formed to be close to the edge.

2, 4, 9 and 11, the fixing groove 21 of the upper frame 11, the fixing groove 26 and the first and first of the left and right frames 22, 23 The fixing grooves 35 and 45 of the two doors 30 and 40 are respectively equipped with sealing members 50 for maintaining airtightness. The sealing member 50 includes a fixing plate 51 which is fitted into and coupled to the fixing grooves 21 and 26 of the door frame 10 and the fixing grooves 35 and 45 of the first and second doors 30 and 40, respectively. It is composed of a plurality of hairs (52) having flexibility that is planted in the fixed plate (51). The hairs 52 of the sealing member 50 mounted in the fixing groove 21 of the upper frame 11 are in close contact with the upper ends of the first and second doors 30 and 40 to maintain airtightness, and the left and right sides are closed. The hairs 52 of the sealing member 50 mounted in the fixing grooves 26 of the frames 22 and 23 are in close contact with the left end of the first door 30 and the right end of the second door 40, respectively. Keep it. And the hair 52 of the sealing member 50 mounted in the fixing grooves 35 and 45 of the first and second doors 30 and 40 is in close contact with the bottom 3 to maintain airtightness. In this way, by maintaining the airtight by the sealing member 50, it is possible to improve the ventilation and soundproofing effect to greatly improve the reliability.

2, 3 and 5 to 8, the sliding door of the present invention, the first and second doors 30 and 40 along the first and second guide rails 12 and 13 of the door frame 10. The upper roller assembly 60 is installed on both sides of the installation grooves 33 and 43 of the first and second doors 30 and 40 to smoothly guide the opening and closing operation of the upper and lower roller assemblies. The first and second upper rollers 61 and 62 of 60 are mounted on the first and second guide rails 12 and 13 of the door frame 10 so as to be in rolling contact with each other. In the present embodiment, the numbers of the first and second upper rollers 61 and 62 can be increased or decreased as necessary.

Guide brackets 63 constituting the roller height adjusting means of the first and second upper rollers 61 and 62 are fixed to the installation grooves 33 and 43 of the first and second doors 30 and 40. The upper and lower portions of the guide bracket 63 are open. Vertical slots 64 are formed on the front and rear surfaces of the guide bracket 63 so as to correspond to each other, and through holes 65 are formed on the left and right sides, respectively. An operating bracket 66 is provided inside the guide bracket 63 so as to move relative to the guide bracket 63. Slot slots 67 are formed on the front and rear surfaces of the operating bracket 66 so as to overlap the vertical slots 64 of the guide bracket 63, and the through holes of the guide bracket 63 are formed on the left and right sides. The screw holes 68 are formed so as to align with the respective ones 65).

As shown in detail in FIGS. 5 to 8, the vertical slot 64 of the guide bracket 63 and the inclined slot 67 of the operating bracket 66 are along the vertical slot 64 and the inclined slot 67. The operating shaft 69 is inserted and mounted to move, and both ends of the operating shaft 69 passing through the vertical slot 64 of the guide bracket 63 prevent the separation of the operating shaft 69. Coupling rings 70 supported on the front and rear surfaces of 63) are engaged. The adjusting screw shaft 71 is fastened to the screw hole 68 of the operating bracket 66 through the through hole 65 of the guide bracket 63. The head 71a of the adjustment screw shaft 71 is supported on one outer surface of the guide bracket 63 and the front end is fastened to a nut 72 supported on the other outer surface of the guide bracket 63. Accordingly, when the operator rotates the adjusting screw shaft 71, the adjusting screw shaft 71 rotates in place, and the operation bracket 66 is screwed to the screw hole 68 that moves along the rotating screw shaft 71. To move left and right. The inclined slot 67 of the operating bracket 66 moving left and right pushes the operating shaft 69, and the operating shaft 69 pushed by the inclined slot 67 of the operating bracket 66 is a guide bracket. It moves up and down along the vertical slot 64 of 63.

In addition, a connecting shaft 73 protruding upward of the guide bracket 63 is connected to an outer surface of the operating shaft 69, and a support block 74 is mounted on an upper end of the connecting shaft 73. The first and second fixed shafts 75 and 76 are mounted on the support block 74, respectively, and both sides of the first and second fixed shafts 75 and 76 are freely rotated by the support of the bearing 77. The first and second upper rollers 61 and 62 are mounted, respectively. The first and second upper rollers 61 and 62 roll along the first and second guide rails 12 and 13 of the upper frame 11 to open and close the first and second doors 30 and 40. Guide the action smoothly.

The guide bracket 63 of the upper roller assembly 60 may be fixedly installed inside the fixed bracket 78. The inner surface of the fixing bracket 78 is spaced apart from the guide bracket 63 so that both ends of the operating shaft 69 does not interfere, and the upper surface of the fixing bracket 78 is opened so that the connecting shaft 73 can pass. The guide bracket 63 or the fixing bracket 78 of the upper roller assembly 60 is fixed by a screw 79 fastened through the upper frame 11. The fixing bracket 78 of the upper roller assembly 60 surrounds the guide bracket 63 so that the operating shaft 69 interferes with the installation grooves 33 and 43 of the first and second doors 30 and 40. Preventing the installation of the upper roller assembly 60 is simplified.

3, 4, 9, 11 and 13 to 15, the sliding door of the present invention is in contact with the guide grooves (34, 44) of the first and second doors (30, 40) in a cloud contact. A first lower roller 81, a second lower roller 82, and the first and second lower rollers 81, which are mounted to allow the first and second doors 30 and 40 to smoothly guide the opening and closing operations of the first and second doors 30 and 40. , A lower roller assembly 80 having a third lower roller 83 disposed between the lower roller assemblies 80 and the lower roller assembly 80 on the floor 3 of the building corresponding to the center of the door frame 10. Is installed. Each of the first to third lower rollers 81, 82, 83 is constituted by a ball bearing that rotates about the axes 81a, 82a, 83a. In the present embodiment, the number of the lower rollers 81, 82, 83 can be added or subtracted as needed.

As shown in FIGS. 13 and 14, the housing 84 of the lower roller assembly 80 is mounted in a buried groove 4 formed in the bottom 3 of the building, and the housing 84 is provided. Inside the lifting plate 85 is mounted so that the lifting movement. The shafts 81a and 82a of the first and second lower rollers 81 and 82 are fixed to the through holes 85a and 85b of the elevating plate 85 and the shaft 83a of the third lower roller 83 is fixed. Is mounted so as to be able to move in the through hole 85c of the elevating plate 85. Coupling rings 83c and 83d are respectively supported on the upper and lower surfaces of the elevating plate 85 on the shaft 83a of the third lower roller 83 to prevent the shaft 83a from being separated from the through hole 85c. Are combined.

In addition, the through hole 81b and the screw hole 81c are formed up and down in the shaft 81a of the first roller 81, and the first roller (in the shaft 83a of the third lower roller 83). The cam hole 83b which is aligned with the through-hole 81b of 81 is formed. The cam hole 83b of the third lower roller 83 is eccentric with respect to the horizontal center axis of the cam hole 83b so as to adjust the position of the shaft 83a by interfering with the inner surface of the cam hole 83b by rotation. An eccentric cam 86 is mounted as the roller position adjusting means, and the eccentric cam 86 is fixed to the adjusting shaft 87 passing through the through hole 81b of the first roller 81. The head 87a of the adjustment shaft 87 is supported by the shaft 81a of the first roller 81 and is supported by the shaft 83a of the third lower roller 83 at the tip that passes through the eccentric cam 86. Coupling ring 87b is coupled. Therefore, when the operator rotates the adjusting shaft 87, the shaft 83a of the third lower roller 83 is moved by the lifting plate 85 by the rotation of the eccentric cam 86 supported on the inner surface of the cam hole 83b. It moves in the through hole 85c.

The tip of the fixing screw shaft 88 which is fastened to the screw hole 81c of the first lower roller 81 is supported by the shaft 83a of the third lower roller 83 to position the third lower roller 83. The head 88a of the fixing screw shaft 88 is fixed to the shaft 81a of the first lower roller 81. Between the housing 84 and the elevating plate 85 of the lower roller assembly 80 is mounted a spring 89 for supporting the elevating plate 85 upwards, the lifting position of the elevating plate 85 is the bottom (3) Restrained by a stopper 84a of the housing 84 to form the same plane as. The stopper 84a of the housing 84 may be formed by bending the upper end of the housing 84.

13, 14 and 17 to 20, the bottom of the housing 84, the rocker 90 is installed as a restraining means for restraining the lifting movement of the lifting plate 85 with respect to the housing 84 , The rocker 90 is configured by assembling the first divided body 91 and the second divided body 92 divided into left and right sides. An inlet 93 is formed in front of the rocker 90 and communicates with the inside thereof, and a cam groove 94 is formed on one inner surface, that is, the inner surface of the first divided body 91. Cam groove 94 has a first guideway (96a) formed to form a gentle downhill slope toward the bottom, that is to the rear, relative to the horizontal center line 95 toward the front entrance 93, and the first guide Connected by a substantially corrugated second guideway 96b having a way 96a and a locking groove 97 and formed to form a gentle uphill slope from the rear toward the entrance 93 with respect to the horizontal center line 95. It has a 3rd guideway 96c. The overall shape of the cam groove 94 is substantially heart-shaped by the first to third guideway 96c. The front locking jaw 98a and the rear locking jaw 98b are formed at the front and the rear of the cam groove 94 based on the horizontal center line 95, respectively. The front locking jaw 98a has a lower side of the first guideway 96a and the third guideway 96c has a higher side, and the rear locking jaw 98b has a higher side of the first guideway 96a and a third guide. The way 96c side is formed low. In addition, the front and rear of the cam groove 94 is formed to protrude toward the cam groove 94, the front projection (99a) and the rear projection (99b) so as to be close to the horizontal center line (95).

Further, the locking means moves along the cam groove 94 of the rocker 90 in response to the lifting motion of the lifting plate 85 to lift and lower the movement of the lifting plate 85, that is, the rising position and the lowering position. The cam follower 100 connected to the 85 is provided. A pin 101 is formed at the rear end of the cam follower 100 in a relationship corresponding to the cam groove 94 through the inlet 93 of the rocker 90, and the tip is pivoted at the center of the lower surface of the elevating plate 85. (Pivot: 102) is connected to turn around. The pivoting of the cam follower 100 about the pivot 102 allows the pin 101 of the cam follower 100 to move along the cam groove 94.

2 to 3 and 9, the sliding door of the present invention can guide the opening and closing operations of the first door 30 and the second door 40 in a linear motion with respect to each other to prevent shaking The linear motion guide mechanism 110 is provided. The linear motion guide mechanism 110 is any one of the first door 30 and the second door 40, for example, the guide rail 111 is attached to the lower end of the first door 30 in the longitudinal direction; It is attached to the lower end of the second door 40 in the longitudinal direction and consists of a slide rail (Slide rail: 112) that is fitted to the guide rail 111 to slide along the guide rail (111). A sliding bearing 113 is interposed between the guide rail 111 and the slide rail 112 to assist the sliding movement of the slide rail 112 with respect to the guide rail 111. The sliding bearing 113 is a plurality of balls (113a) in contact with the cloud on each of the inner surface of the guide rail 111 and the outer surface of the slide rail 112, and a cage (Cage: 113b) for supporting the balls (113a) Consists of.

11 to 12 show a linear motion guide mechanism of another embodiment. 11 to 12, the linear motion guide mechanism 120 according to another embodiment may include first guide rails 121 and second formed to correspond to the first door 30 and the second door 40, respectively. And a first roller 123 and a second roller 124, which are mounted to guide the rolling rails by rolling contact with the guide rails 122 and the first and second guide rails 121 and 122, respectively. . The first roller 123 mounted on the first guide rail 121 of the first door 30 is supported by the second door 40 by the first bracket 125 and the second door 40 of the second door 40. The second roller 124 mounted on the second guide rail 122 is supported by the first door 30 by the second bracket 126. In this embodiment, the first and second rollers 123 and 124 are ball bearings mounted to rotate about the shafts 125a and 126a fixed to the ends of the first and second brackets 125 and 126. It consists of. The first and second brackets 125 and 126 are fixed to the first and second doors 30 and 40 by fastening the screws 127, respectively. The first roller 123 is mounted at a position close to the right end of the first door 30 by the first bracket 125, and the second roller 124 is second by the second bracket 126. It is attached at the position near the left end of the door 40. That is, the first and second rollers 123 and 124 are disposed at the portions where the first and second doors 30 and 40 overlap with each other when the first and second doors 30 and 40 are closed. . In the present exemplary embodiment, the first and second rollers 123 and 124 of the linear motion guide mechanism 120 are illustrated and described, one each installed in the first and second brackets 125 and 126. And the number of rollers installed in the second bracket (125, 126) can be increased as needed. For example, the linear motion guide mechanism 120, like the first to third lower rollers 81, 82, and 83 of the lower roller assembly 80, may have three rollers each of the first and second brackets 125 and 126. The rollers disposed at the center of the rollers may be configured to be adjustable in position by a cam structure similar to the third lower rollers 83 of the lower roller assembly 80.

The following describes the operation of the sliding door according to the present invention having such a configuration.

1 to 4 and 6, in the installation of the first door 30 and the second door 40, the first and second guide rails 12 and 13 of the upper frame 11 may be provided with a first door. And installing the upper roller assembly 60 so that the first and second upper rollers 61 and 62 of the upper roller assembly 60 separated from the second doors 30 and 40 are seated. After installing the upper frame 11 of the door frame 10 on which the upper roller assembly 60 is installed on the ceiling 1 of the building, the left and right frames 22 and 23 are installed on the wall 2 of the building. To complete the installation of the door frame (10).

13 and 14, the housing 84 of the lower roller assembly 80 is installed in the buried groove 4 of the bottom 3 in a buried manner. In the initial position, the elevating plate 85 is caught by the stopper 84a of the housing 84 to be constrained in the raised position, and the first and second lower rollers 81 and 82 and the third lower roller 83 are connected to the bottom 3. ) Will protrude upward.

Referring to FIGS. 13, 14 and 17 to 20, when the operator pushes and lowers the elevating plate 85 to the inside of the housing 84, the cam groove 94 in response to the movement of the elevating plate 85 to be lowered. The pin 101 of the cam follower 100, which was at the tip side of the side, is moved toward the second guideway 96b along the first guideway 96a. At this time, the pin 101 of the cam follower 100 is caught by the front locking jaw 98a and is not moved toward the third guideway 96c, but is guided and moved toward the second guideway 96b by the front protrusion 99a. do. When the elevating plate 85 is continuously lowered, the pin 101 of the cam follower 100 is located at the end of the second guideway 96c. When the pin 101 of the cam follower 100 is positioned in the locking groove 94, even if the lifting plate 85 removes the force pushed by the operator, the lifting plate 85 is provided with the first and second lower rollers 81, 82 and the third lower roller 83 are stopped at a position where the housing 84 is completely immersed.

As shown in FIG. 3, the operator erects the first and second doors 30 and 40 so that the first and second doors 30 to the first and second channels 19 and 20 of the upper frame 11. , Respectively, and the upper end of the first and third lower rollers (81, 82, 83) of the lower roller assembly 80, and guide grooves (34, 44) of the first and second doors (30, 40), respectively. ). As such, the first and second channels 19 of the upper frame 11 in a state in which the first to third lower rollers 81, 82, and 83 of the lower roller assembly 80 are immersed in the floor 3 of the building. , 20) can be easily installed by standing the first and second doors (30, 40) by being able to fit the upper ends of the first and second doors (30, 40). The slide rails 112 are coupled to the guide rails 111 of the linear motion guide mechanism 110 during the installation of the first and second doors 30 and 40, and between the guide rails 111 and the slide rails 112. The sliding bearing 113 is interposed therebetween.

As shown in FIGS. 3, 14 and 16, the guides of the first and second doors 30, 40 on the first to third lower rollers 81, 82, 83 of the lower roller assembly 80. After aligning the grooves 34 and 44, the operator presses the lifting plate 85 immersed in the housing 84 of the lower roller assembly 80, and the lifting plate 85 receives a force to lower. The pin 101 of the cam follower 100, which is positioned in the locking groove 97 by the force that the lifting plate 85 is to descend, leaves the locking groove 97 and extends along the second guideway 96b. It is moved toward the way 96c. The pin 101 of the cam follower 100 is not moved toward the first guideway 96a by being caught by the rear catching jaw 98b when leaving the locking groove 97 and is guided by the rear protrusion 99b. 3 Move to the guideway (96c).

When the pin 101 of the cam follower 100 leaves the locking groove 97 as described above, the lifting plate 85 is lifted by the elasticity of the spring 89, and the cam type is corresponding to the lifting of the lifting plate 85. The pin 101 of the copper 101 is moved from the second guideway 96b toward the inlet 93 along the third guideway 96c. And the lifting plate 85 is caught by the stopper 84a of the housing 84, and the rising position is restrained. As the lifting plate 85 is lifted, the first to third lower rollers 81, 82, and 83 of the lower roller assembly 80 are guide grooves 34 and 44 of the first and second doors 30 and 40. Are located at each.

3, 7 and 8, after fitting the upper ends of the first and second doors 30 and 40 to the first and second channels 19 and 20 of the upper frame 11, the first And the fixing brackets 78 of the upper roller assembly 60 on which the first and second upper rollers 61 and 62 are seated on the second guide rails 12 and 13 are provided with the first and second doors 30 and 40. ) Is accommodated in the installation grooves (33, 43). When the operator rotates the adjusting screw shaft 71 of the upper roller assembly 60, the screw hole 68 of the operating bracket 66 is screwed along the rotating adjusting screw shaft 71, the operating bracket 66 Moves left or right. The inclined slot 67 of the operating bracket 66 moving left and right pushes the operating shaft 69, and the operating shaft 69 pushed by the inclined slot 67 of the operating bracket 66 is a guide bracket. It is raised or lowered along the vertical slot 64 of 63. Heights of the first and second upper rollers 61 and 62 are adjusted by the lifting and lowering of the operating shaft 69, and the first and second upper rollers 61 and 62 are formed of the first and second upper rollers 11 and 62, respectively. The second guide rails 12 and 13 can be accurately seated. The mounting of the upper roller assembly 60 is the first to third lower rollers 81 and 82 of the lower roller assembly 80 in the guide grooves 34 and 44 of the first and second doors 30 and 40. The lower end portions of the first and second doors 30 and 40 may be supported on the bottom 3 before the 83 is positioned. Therefore, the installation work of the 1st and 2nd doors 30 and 40 can be performed very simply.

13 to 16, after the first and second doors 30 and 40 are installed in the doorway 27 of the door frame 10, the operator moves the control shaft 87 of the lower roller assembly 80. When rotating, the shaft 83a of the third lower roller 83 is moved in the through hole 85c of the elevating plate 85 by the rotation of the eccentric cam 86 supported on the inner surface of the cam hole 83b. 3 The position of the lower roller 83 is adjusted. When the third lower roller 83 is supported on one inner surface of the guide grooves 34 and 44, the first and second lower rollers 81 and 82 are supported on the other inner surface of the guide grooves 34 and 44.

1 to 4 and 9, in the sliding door of the present invention, when one of the first and second doors 30 and 40, for example, the first door 30, the upper roller assembly The first and second upper rollers 61 and 62 of 60 guide the opening operation of the first door 30 while rolling along the first guide rail 12 of the upper frame 11, The guide groove 34 of the door 30 is guided by the first to third lower rollers 81, 82, and 83 of the lower roller assembly 80 which moves in rolling motion. At this time, each of the first to third lower rollers (81, 82, 83) is rotated while being stably supported on both inner surfaces of the guide grooves (34, 44) to open the first and second doors (30, 40) To guide you smoothly and accurately.

In addition, the slide rail 112 of the second door 40 guides the sliding motion of the guide rail 111 of the first door 30 in a linear motion, the ball 113a of the sliding bearing 113 is a slide rail Since the sliding motion of the guide rail 111 with respect to 112 is smoothly maintained, the first door 30 is opened accurately and quietly. The closing operation of the first door 30 is performed in the same manner as the opening operation described above, and the opening and closing operation of the second door 40 is performed in the same manner as the opening and closing action of the first door 30.

10 to 12, when the first door 30 is opened or closed with respect to the second door 40, the first and second rollers of the linear motion guide mechanism 120 of another embodiment ( 123 and 124 are rolling motions along the first and second guide rails 121 and 122 of the first and second doors 30 and 40 to move the opening and closing of the first door 30 in a straight motion without shaking. To guide. Therefore, the opening and closing operations of the first and second doors 30 and 40 can be smoothly and quietly maintained, thereby greatly improving reliability and competitiveness.

The embodiments described above are merely to describe preferred embodiments of the present invention, the scope of the present invention is not limited to the described embodiments, those skilled in the art within the spirit and claims of the present invention It will be understood that various changes, modifications, or substitutions may be made thereto, and such embodiments are to be understood as being within the scope of the present invention.

According to the sliding door according to the present invention as described above, it can be easily installed on the door frame in a state in which the door is erected by the structure that can immerse the lower roller assembly of the lower roller assembly fitted to the guide groove of the door on the floor. In addition, it is possible to accurately seat the upper rollers of the door to the guide rail of the door frame, and to accurately seat the lower rollers of the bottom in the guide groove of the door to keep the opening and closing operation smooth and quiet. And the opening and closing movements of the first and second doors are guided in a linear motion with respect to each other, which effectively prevents the doors from swinging, thereby realizing smooth and quiet opening and closing of the gaps. Sound insulation effect can be greatly improved. As a result, there is an effect that can greatly improve the reliability and economic power of the sliding door.

1 is a front view schematically showing the configuration of a sliding door according to the present invention,

Figure 2 is a perspective view showing a separate configuration of the sliding door according to the present invention,

3 is a longitudinal sectional view showing a configuration of a sliding door according to the present invention;

Figure 4 is a cross-sectional view showing the configuration of a sliding door according to the present invention,

5 is a perspective view showing a separate configuration of the upper roller assembly in the sliding door according to the present invention,

Figure 6 is a cross-sectional view showing the configuration of the upper roller assembly in the sliding door according to the present invention,

7 and 8 are cross-sectional views for explaining the operation of the upper roller assembly in the sliding door according to the invention,

Figure 9 is a cross-sectional view partially showing the configuration of the linear motion guide mechanism in the sliding door according to the present invention,

10 is a perspective view showing a separate linear motion guide mechanism of the sliding door according to the present invention,

11 is a cross-sectional view showing a state of assembling the linear motion guide mechanism of another example in the sliding door according to the present invention to the first and second doors,

12 is a sectional view taken along the line XII-XII of FIG. 11;

Figure 13 is a perspective view showing a separate configuration of the lower roller assembly in the sliding door according to the present invention,

14 is a cross-sectional view showing the configuration of the lower roller assembly according to the present invention,

15 is a front view showing the configuration of the third lower roller and the eccentric cam in the lower roller assembly according to the present invention,

16 is a plan view partially showing a state in which the first to third lower rollers of the lower roller assembly according to the present invention are mounted in the guide groove of the first door;

17 is a cross-sectional view showing a rocker of the lower roller assembly according to the invention,

18 is a front view showing the cam groove of the rocker according to the present invention,

FIG. 19 is a sectional view taken along line VII-VII of FIG. 18;

20 is a cross-sectional view taken along line VII-VII of FIG. 18.

♣ Explanation of symbols for the main parts of the drawing ♣

10: door frame 11: upper frame

12: 1st guide rail 13: 2nd guide rail

22: left frame 23: right frame

30: first door 34: guide groove

40: second door 44: guide groove

50: sealing member 60: upper roller assembly

61: first upper roller 62: second upper roller

63: guide bracket 64: vertical slot

66: operating bracket 67: inclined slot

69: operating shaft 71: adjusting screw shaft

74: support block 78: fixed bracket

80: lower roller assembly 81: first lower roller

82: second lower roller 83: third lower roller

84: housing 85: lifting plate

86: eccentric cam 87: control shaft

88: set screw shaft 89: spring

90: rocker 94: camhome

97: locking groove 100: cam follower

101: pin 110: linear motion guide mechanism

111: guide rail 112: slide rail

113: sliding bearing 120: linear motion guide mechanism

121: first guide rail 122: second guide rail

123: first roller 124: second roller

Claims (7)

A door frame having an entrance frame attached to the ceiling and formed by an upper frame having a pair of first and second guide rails formed along a longitudinal direction, and a left and right frame attached to a wall to be compatible with both ends of the upper frame. and; First and second doors which are installed to open and close the doorway in the left and right directions and have guide grooves formed on the bottom thereof in a longitudinal direction; A plurality of upper rollers installed on an upper portion of the first and second doors, the upper rollers being in contact with the first and second guide rails of the door frame, and the first and second guide rails of the door frame. An upper roller assembly having a roller height adjusting means capable of raising and lowering rollers; A lower roller assembly installed on a bottom corresponding to the center of the door frame and having a plurality of lower rollers mounted on the bottom so as to contact the guide grooves of the first and second doors from the bottom; A sliding door comprising a linear motion guide means for guiding the opening and closing operations of the first and second doors in a linear motion with respect to each other. According to claim 1, The roller height adjusting means of the upper roller assembly, Guide brackets fixed to both upper portions of the first and second doors, and having vertical slots corresponding to each other on the front and rear surfaces thereof; An operating bracket installed to move inside the guide bracket and having an inclined slot formed on the front and rear surfaces thereof so as to overlap with the vertical slot of the guide bracket; An operating shaft mounted to move along a vertical slot of the guide bracket and an inclined slot of the operating bracket, and connected to the upper rollers to rotate; And a sliding screw shaft penetrating the guide bracket to the operating bracket so as to move the operating bracket with respect to the guide bracket. The method of claim 1, wherein the lower roller assembly, A housing embedded in the bottom; It is installed to move up and down in the housing, the shafts of the first and second lower rollers disposed on the left and right of the lower rollers is fixed, and between the first and second lower rollers of the lower rollers. A lifting plate which is supported so that the shaft of the third lower roller which is arranged can move; A spring mounted between the housing and the elevating plate to support the elevating plate upward; Roller position adjusting means for adjusting the position of the third lower roller; The sliding door of the first to the third lower rollers is composed of restraining means for restraining the lowered position immersed in the floor. According to claim 3, The roller position adjusting means of the lower roller assembly, An eccentric cam mounted so as to be eccentric with a horizontal center axis line of the cam hole formed in the shaft of the third lower roller; A control shaft fixed to the eccentric cam through the shaft of the first lower roller; And a sliding screw shaft fastened to fix the shaft of the third lower roller through a screw hole formed in the shaft of the first lower roller. The method of claim 3, wherein the restraining means of the lower roller assembly, It is mounted on the bottom of the housing, connected by a first guideway formed rearward from the front inlet side with respect to its horizontal center line, and by a second guideway having a first guideway and a locking groove and from the rear of the inlet. A rocker having a cam groove made of a third guideway formed toward the surface; Sliding door having a pin to move along the cam groove of the rocker, the cam follower is connected to the lifting plate to restrain the lowered position of the lifting plate when the pin is caught by the locking groove of the cam groove. According to claim 1, wherein the linear motion guide means, A guide rail attached to a lower end of any one of the first and second doors along a length direction; A slide rail attached to the lower end of the other one of the first and second doors along a length direction and fitted to the guide rail to slide along the guide rail; Sliding door consisting of a sliding bearing which is interposed to assist the sliding movement between the guide rail and the slide rail. According to claim 1, wherein the linear motion guide means, First and second guide rails respectively formed to correspond to the first and second doors; At least one first roller mounted on the first guide rail of the first door to be in rolling contact with the first guide rail; At least one second roller so as to make rolling contact with the second guide rail of the second door; A first bracket supporting the first roller on the second door; Sliding door comprising a second bracket for supporting the second roller on the first door.