Suspension guide device for sliding doors

Abstract

To provide a hanging guide device for a sliding door which prevents deformation of a guide rail even in the case where a hanging tool which hangs a sliding door travels repeatedly on the guide rail and a load is applied to the rail repeatedly by the sliding door, and which can maintain smooth movement of the sliding door.SOLUTION: A hanging guide device 1 for a sliding door includes: a guide rail 6 installed above an entrance of a building; and a hanging tool 7 for mounting a sliding door 3 via a fixed screw rod 22, and moving along the guide rail 6. The guide rail 6 includes a long bottom plate 14 and an erected plate 15, and a cross section of the guide rail is formed to have an inverted T shape. In the hanging tool 7, side wall parts 26 and 27, and rolling wheels 19 and guide wheels 20 are positioned respectively on both sides by sandwiching the erected plate 15 in the center. The rolling wheels 19 are placed at the bottom plate 14 in the guide rail 6 and provided so as to roll on the bottom plate 14. The guide wheels 20 are provided with an interval 42 with respect to the erected plate 15.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a hanging guide device for a sliding door, and more particularly to a hanging guide device for a sliding door that suspends the door and moves it laterally to guide it in order to open and close the door, for example, in a sliding door that opens and closes the entrance of a building such as a factory, warehouse, garage, etc. [Background technology]

[0002] Conventionally, there has been known a suspension and guide device for sliding doors that suspends and guides a door by moving it laterally at the entrances of buildings such as factories, warehouses, and garages. In this device, a guide rail is provided along the top of the entrance, and the door is suspended by a suspension device having a rolling wheel that runs on the guide rail (see Patent Documents 1 and 2).

[0003] An example of a conventional hanging guide device 50 for a sliding door will be briefly described with reference to Fig. 9. As shown in Fig. 9(a), a sliding door 3 that moves laterally to open and close the entrance 2 of a building is provided. The hanging guide device 50 for a sliding door includes a guide rail 51 and a hanging tool 56.

[0004] As shown in Fig. 9(b), a guide rail 51 is attached to a building structure 53 by a mounting bracket 52 so as to extend horizontally along the upper part of the entrance 2. A hoisting fixture 56 has rolling wheels 54 that roll on the guide rail 51, and the sliding door 3 is suspended from the hoisting fixture 56, and the sliding door 3 moves horizontally to open and close the entrance 2.

[0005] The cross section of the guide rail 51 perpendicular to the longitudinal direction is substantially inverted Π shape as shown in Fig. 9(c), and the rolling wheels 54 of the hoisting fixture 56 roll on the left and right bottom parts 57. The hoisting fixture 56 has a mounting shaft 58 that hangs down, and the upper part of the sliding door 3 is attached to the mounting shaft 58 by tightening it with a nut. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 2729443 [Patent Document 2] JP 2006-144221 A Summary of the Invention [Problem to be solved by the invention]

[0007] A conventional hanging guide device 50 for a sliding door as shown in FIG. 9 is currently widely used in the entrances of many buildings, but the inventors have found through maintenance that it has the following problems.

[0008] 9(c), is usually formed by bending a long and narrow steel plate about 4 mm thick so that its cross section is roughly inverted Π shape. However, when the rolling wheels 54 of the suspending tool 56 that suspends the sliding door 3 are repeatedly rolled on the guide rail 51, the weight of the sliding door 3 is repeatedly applied as a load to the guide rail 51, and the bottom 57 and both side walls 60 of the guide rail 51 become deformed.

[0009] This causes unevenness to occur on the bottom 57 of the guide rail 51 and distortion to occur on the inner wall surfaces of the side wall portions 60. Then, the unevenness of the bottom 57 causes the rolling wheels 54 to roll poorly, come into contact with the inner wall surfaces of the side wall portions 60, or get caught, preventing them from rolling smoothly.

[0010] In many cases of maintenance for sliding doors, the repair of such deformation of the guide rail 51 is performed, and when partial repair is not enough, it is often necessary to completely replace the guide rail 51 with a new one.

[0011] Incidentally, the guide rail 51 is usually arranged linearly along the entrance 2, but depending on the structure of the building near the entrance, the guide rail 51 may have a curved bent portion in a plan view. If such a portion exists, the side surface of the rolling wheel 54 is likely to come into contact with the inner wall surface of the guide rail 51, which may cause deformation of the guide rail 51 and impair smooth rolling.

[0012] As described above, the guide rail is formed by bending a long, thin steel plate so that its cross section is roughly inverted Π shape. However, such manufacturing is not necessarily easy when one considers issues such as forming the gap between the left and right inner walls of the rail with a specified precision, and is also not preferable in terms of cost.

[0013] The present invention aims to solve the above-mentioned problems associated with conventional hanging and guide devices for sliding doors, and its objective is to realize a hanging and guide device for sliding doors that allows the hanging tool to move smoothly along the guide rail, has a simple structure, and is economical in terms of manufacturing, maintenance, etc. [Means for solving the problem]

[0014] In order to solve the above problems, the present invention provides a hanging guide device for a sliding door, comprising a guide rail installed above an entrance and a hanging tool attached to the guide rail and suspending the sliding door while moving along the guide rail, the guide rail comprising a long and narrow bottom plate and an upright plate standing vertically from the bottom plate, the cross section perpendicular to the longitudinal direction being formed in an inverted T shape, the hanging tool comprising a main plate frame, rolling wheels and guide wheels, and movable along the guide rail, the main plate frame comprising a bottom and side walls on both sides, the cross section perpendicular to the moving direction of the hanging tool being concave-shaped, the rolling wheels are provided in pairs on the inner surfaces of the side wall portions on both sides, parallel to the inner surfaces of the side wall portions and facing each other, the guide wheels are provided in pairs horizontally on the inner surfaces of the side wall portions on both sides and facing each other, and the hanging device is configured such that, when attached to the guide rail, the side wall portions, the rolling wheels and the guide wheels are located on both sides of the standing plate in the middle, and the rolling wheels are placed on the bottom plate of the guide rail and are capable of rolling on the bottom plate.

[0015] In order to solve the above problems, the present invention provides a hanging guide device for a sliding door, comprising a guide rail installed above an entrance and a hanging tool attached to the guide rail for suspending the sliding door and moving along the guide rail, the guide rail comprising a long and narrow bottom plate and a vertically erected plate extending along the center of the bottom plate in a direction perpendicular to the longitudinal direction, the cross section perpendicular to the longitudinal direction being formed in an inverted T shape, the hanging tool comprising a main plate frame, rolling wheels and guide wheels, and movable along the guide rail, the main plate frame comprising a bottom and two side walls respectively erected vertically from both sides of the bottom in a direction perpendicular to the movement direction of the hanging tool, the cross section perpendicular to the movement direction of the hanging tool being The hanging guide device for a sliding door is characterized in that the hanging guide device is formed in a concave shape, the rolling wheels are provided in pairs on the inner surfaces of the side wall portions on both sides, in a direction parallel to the inner surfaces of the side wall portions, facing each other, and the guide wheels are provided in pairs on the inner surfaces of the side wall portions on both sides, in a horizontal direction perpendicular to the inner surfaces of the side wall portions, facing each other, and when the hanging device is attached to the guide rail, the side wall portions, the rolling wheels and the guide wheels are located on both sides of the standing plate in the middle, the rolling wheels are placed on the bottom plate of the guide rail and are capable of rolling on the bottom plate, and the guide wheels are provided with a gap from the standing plate.

[0016] When the lifting device is attached to the guide rail so that the guide rail upright plate is positioned in the center of both side wall portions of the lifting device, the rolling wheels and the guide wheels, it is preferable that the gap between the guide wheels and the guide rail upright plate is smaller than the gap between the bottom plate of the guide rail and the side wall portions of the main plate frame, and also smaller than the gap between the guide rail upright plate and the head of the shaft to which the rolling wheels are attached or the gap between the guide rail upright plate and the rolling wheels.

[0017] The hanging fixture is provided with a sliding door fixing screw rod for attaching the sliding door to the bottom of the hanging fixture, and it is preferable that the sliding door fixing screw rod is arranged to extend downward from the bottom. Effect of the Invention

[0018] The hanging guide device for a sliding door according to the present invention provides the following effects.

[0019] (1) The guide rail is made by welding together long, thin plates of steel or other materials, and has a simple inverted T-shape with a bottom plate and an upright plate. Therefore, it is relatively easy to manufacture and perform maintenance such as cleaning, and is also economical.

[0020] (2) The guide rail can be manufactured simply by welding the bottom plate and the upright plate together. This allows the use of plate material of sufficient thickness compared to bending processing, etc., and prevents damage or deformation of the guide rail even when it is subjected to repeated loads caused by the movement of a heavy sliding door, reduces the frequency of maintenance, and maintains smooth movement of the lifting device for a long period of time.

[0021] (3) When the rolling wheels of the hoisting device move along the guide rail, even if the sliding door moves to the side in the direction of travel, the guide wheels abut against the upright plates of the guide rail and rotate. This prevents the hoisting device from abutting against the guide rail and getting caught or rubbing against it, allowing for smooth movement. [Brief description of the drawings]

[0022] [Figure 1] 1 is a front view showing a sliding door to which a hanging guide device for a sliding door according to the present invention is applied; [Diagram 2] 1A and 1B are diagrams showing rails in an embodiment of a hanging guide device for sliding doors according to the present invention, in which (a) is an oblique view of the rail, (b) is an oblique view of a portion of the rail cut in the longitudinal direction, (c) is a side view of the portion of the rail shown in (a), and (d) is a front view of the portion of the rail shown in (b). [Diagram 3] 5A and 5B are diagrams showing a suspending device in the above embodiment, in which (a) is a plan view and (b) is a BB cross-sectional view of (a). [Figure 4] 1A and 1B are diagrams showing the hoisting device in the above embodiment, where (a) is a perspective view and (b) is a view seen from slightly above and to the right as viewed from the front. [Diagram 5]1A is a plan view of a guide wheel attachment piece for attaching a guide wheel of a hoisting device in the above embodiment, FIG. 1C is a side view of the guide wheel attachment piece. The two-dot chain line indicates the guide wheel. [Figure 6] 1A and 1B are diagrams showing the state in which the hoisting device is attached to the rail in the above embodiment, in which (a) is a diagram seen from the right side as viewed from the front, and (b) is an enlarged view of the main part of (a). [Figure 7] 1A and 1B are diagrams showing the state of use of the embodiment, in which (a) is a plan view and (b) is a perspective view seen from the right side when facing the front. [Figure 8] FIG. 11 is a diagram showing a modification of the above embodiment, in which (a) is a plan view, and (b) is a perspective view seen from the right side when facing the front. [Figure 9] 1A and 1B are diagrams illustrating a conventional example of a hanging guide device for a sliding door, in which (a) is a front view of the sliding door, (b) is a cross-sectional view taken along line BB of (a), and (c) is an enlarged view of a main part of (b). BEST MODE FOR CARRYING OUT THEINVENTION

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hanging guide device for a sliding door according to the present invention will be described below with reference to the drawings. EXAMPLES

[0024] Overall configuration: An embodiment of the hanging guide device for sliding doors according to the present invention will be described below with reference to Figures 1 to 8. Figure 1 is a diagram showing a state in which two sliding doors 3 that can be opened and closed by a hanging guide device for sliding doors 1 according to the present invention are provided at an entrance 2 of a building.

[0025] In this specification, when the sliding door 3 is viewed from the indoor side, the side in front of the front is referred to as the front side (indoor side), the opposite side (outdoor side) is referred to as the back side, and the direction from the front side to the back side or the opposite direction is referred to as the depth direction.

[0026] In addition, the left and right are referred to as the left and right sides and the left and right directions when the sliding door 3 is viewed from the front from the indoor side. For example, the longitudinal direction of the guide rail 6, which is also the direction in which the later-described hanging device 7 moves, is the left and right direction, and the depth direction is the direction perpendicular to the longitudinal direction of the guide rail 6.

[0027] One or more sliding doors 3 are provided depending on the width of the entrance / exit 2, but in this embodiment, two sliding doors 3 are provided, and each can be moved in the opening and closing direction (left and right directions when facing the front in Figure 1) by a hanging guide device 1 for the sliding door.

[0028] The hanging and guiding device 1 for a sliding door includes a guide rail 6 and a hanging tool 7 that runs while being guided by the guide rail 6 and hangs the sliding door 3, as shown in Figs.

[0029] Guide rail: The guide rail 6 is disposed horizontally above and along the entrance 2 on the indoor side of the building, and is fixed to the building structure 11 with bolts 12 via mounting brackets 10, as shown in Figures 1 and 6(a).

[0030] As shown in Figures 2(a) to (d), the guide rail 6 comprises a long, thin bottom plate (long bottom plate) 14 and a long, thin upright plate (long upright plate) 15 that stands vertically along the center of the depth direction (width direction perpendicular to the longitudinal direction) of the bottom plate 14.

[0031] The bottom plate 14 and the upright plate 15 are each made of a long, thin steel plate or the like, and the upright plate 15 is fixed in an upright state to the bottom plate 14 by welding. The cross section of the guide rail 6 perpendicular to its longitudinal direction is an inverted T-shape (see FIG. 2(c)).

[0032] As described above, the guide rail 6 has a simple configuration and can be relatively easily manufactured by welding materials such as steel plates. In addition, bending or the like is basically not required during the manufacturing process.

[0033] Therefore, the thickness of the material such as the steel plate may be selected taking into consideration the strength capable of withstanding the weight of the sliding door 3. Therefore, even if the guide rail 6 is subjected to repeated loads caused by repeated opening and closing of the sliding door 3, deformation of the guide rail 6 can be suppressed.

[0034] Hanging tool: The hoisting device 7, as shown in Figs. 3 and 4, comprises a main plate frame 18, rolling wheels 19, guide wheels 20, guide wheel mounting pieces 21, and a sliding door fixing screw rod 22.

[0035] As mentioned above, this specification uses the terms "front side" and "rear side," and when the guide rail 6 is disposed above the entrance / exit 2 and the hoisting device 7 is attached to the guide rail 6, the inside of the building is referred to as the front side and the outside is referred to as the back side for the guide rail 6 and the hoisting device 7, respectively.

[0036] The same applies to the "depth direction." When the guide rail 6 is disposed above the entrance / exit 2 and the hoisting device 7 is attached to the guide rail 6, the "depth direction" refers to the direction perpendicular to the longitudinal direction of the guide rail 6, and for the hoisting device 7, the "depth direction" refers to the direction perpendicular to the direction of movement (the direction from the front side to the back side of the main panel frame 18).

[0037] The main plate frame 18 is formed from steel or the like, and as shown in Figures 3(a), (b), 4(a), and (b), has a bottom 25 and side wall portions 26, 27 on either side of the bottom 25, and its cross section perpendicular to the direction of movement on the guide rail 6 is approximately concave-shaped (see Figure 4).

[0038] Here, the "side wall portions 26, 27 on both sides of the bottom 25" of the main plate frame 18 refer to the side wall portions on both sides (the depth end and the front end) of the bottom 25 in the depth direction, and more specifically, the side wall portions 26, 27 formed vertically upward from the bottom 25 on the front side and back side of the bottom 25, respectively.

[0039] Regarding the rolling wheels 19, two rolling wheels 19 are provided as a pair with their side surfaces facing each other toward the inside of the main plate frame 18. More specifically, the two rolling wheels 19 are rotatably attached to the inside of the front side wall portion 26 and the back side wall portion 27, respectively, by bolt shafts 29 (shafts for attaching the rolling wheels 19) and nuts 30 (see Figs. 3(a), 4(a) and (b)).

[0040] As shown in Figures 3(a), 4(a), (b), etc., the guide wheels 20 are arranged in pairs, one on each side of the rolling wheel 19 (front and back in the direction of movement of the hoisting device 7), facing each other with a gap 28 between them, from the front side wall portion 26 and the back side wall portion 27, respectively.

[0041] More specifically, as shown in Figures 3(a), 4(a) and (b), guide wheel attachment pieces 21 are fixed to the inner surfaces of the front side wall portion 26 and the back side wall portion 27. The guide wheel attachment piece 21 is made of a plate material shaped as shown by the solid lines in Figures 5(a) to (c), and horizontal guide wheel attachment portions 33 are formed on the left and right sides thereof so as to protrude toward the center of the main plate frame 18.

[0042] 5(a) to 5(c), the guide wheels 20 are attached horizontally and rotatably to the left and right guide wheel attachment portions 33 of the guide wheel attachment piece 21. That is, the guide wheels 20 are attached horizontally and rotatably to the left and right guide wheel attachment portions 33 of the guide wheel attachment piece 21 fixed to the inner surfaces of the front side wall portion 26 and the back side wall portion 27.

[0043] Figure 3(b) shows the BB cross section of Figure 3(a), and shows a configuration in which a guide wheel mounting piece 21 is fixed to the side wall portion 27 on the back side, and a guide wheel 20 is horizontally rotatably attached to a guide wheel mounting portion 33 formed horizontally on the left and right sides of the guide wheel mounting piece 21.

[0044] As shown in Figures 3(a), 4(a) and 7(a), two pairs of guide wheels 20 are provided on the left and right sides of a pair of rolling wheels 19. The guide wheels 20 are attached to guide wheel attachment parts 33 so as to protrude further toward the center from the front side wall part 26 and the back side wall part 27 compared to the heads 31 of the bolt shafts 29 that attach the rolling wheels 19.

[0045] In other words, the spacing 28 between the paired guide wheels 20 is smaller than the spacing 34 between the heads 31 of the paired bolt shafts 29 .

[0046] The sliding door fixing screw rod 22 has its head 37 provided on the bottom 25 of the main plate frame 18, as shown in Figures 3(b), 4(b), 6(a), (b), etc., and its screw portion 38 penetrates downward, and a nut 39 is screwed into the screw portion 38.

[0047] In use, as described later, the hoisting device 7 is attached to the guide rail 6 as shown in Figures 6 and 7. Figures 6(a) and (b) show a state in which the hoisting device 7 is attached to the guide rail 6 so that the upright plate 15 of the guide rail 6 is at the center of the hoisting device 7 in the depth direction.

[0048] In this mounted state, the upright plate 15 of the guide rail 6 (more precisely, the center in the thickness direction of the upright plate 15) is positioned in the middle position between the two pairs of guide wheels 20 of the lifting device 7, and the rolling wheel 19 is placed on the bottom plate 14 of the guide rail 6 and is capable of rolling.

[0049] In this state, in the hanging guide device 1 for sliding doors according to the present invention, as shown in Figures 6(b) and 7(b), the spacing dimension d1 of the gap 42 between the guide wheel 20 and the standing plate 15 is configured to be smaller than the spacing dimension d2 of the gap 43 between the bottom plate 14 of the guide rail 6 and the side wall portions 26, 27.

[0050] 6(b) and 7(a), the gap 42 between the guide wheel 20 and the upright plate 15 has a gap dimension d1 that is smaller than the gap dimension d3 of the gap 44 between the upright plate 15 of the guide rail 6 and the head 31 of the bolt shaft 29 that attaches the rolling wheel 19. The action and effect of configuring the gap dimensions d1, d2, and d3 in this manner will be described later.

[0051] In this embodiment, a head 31 of a bolt shaft 29 (shaft for mounting the rolling wheel 19) for mounting the rolling wheel 19 protrudes from the rolling wheel 19 toward the center of the main plate frame 18 in the depth direction.

[0052] 8(a) and 8(b), the head 31 may be located within the rolling wheel 19 and not protrude toward the center of the main plate frame 18. In such a configuration, the distance d1 of the gap 42 between the guide wheel 20 and the standing plate 15 is smaller than the distance d4 of the gap 45 between the standing plate 15 and the rolling wheel 19.

[0053] In short, the spacing dimension d1 of the gap 42 between the guide wheel 20 and the standing plate 15 is configured to be smaller than the spacing dimension d3 (see Figure 7(a)) of the gap 43 between the standing plate 15 of the guide rail 6 and the head 31 of the bolt shaft 29 (the shaft to which the rolling wheel 19 is attached) or the spacing dimension d4 (see Figure 8(a)) of the gap 45 between the standing plate 15 of the guide rail 6 and the rolling wheel 19.

[0054] (action) The operation of the hanging and guiding device 1 for sliding doors, which is equipped with the guide rail 6 and the hanging tool 7 configured as above, will be described below with reference to the usage state.

[0055] In use, the guide rail 6 is positioned horizontally above the building entrance 2 as shown in Figure 1, and is fixed to the building structure 11 with bolts 12 via mounting brackets 10 as shown in Figures 1 and 6(a).

[0056] As shown in Figures 6(a) and (b), the hanging fixture 7 is fixed to the top of the sliding door 3 by the sliding door fixing screw rod 22 and a nut 39 screwed onto the screw portion 38 of the sliding door 3. Although it depends on the width (width in the left-right direction) of the sliding door 3, usually multiple hanging fixtures 7 are fixed to one sliding door 3, and the sliding door 3 is suspended via the multiple hanging fixtures 7. In this embodiment, one sliding door 3 is suspended by two hanging fixtures 7 as shown in Figure 1.

[0057] The hoisting device 7 is attached to the guide rail 6 from one end of the guide rail 6. When the hoisting device 7 is attached to the guide rail 6, as shown in Figures 6 and 7, the pair of rolling wheels 19 are positioned on both sides of the upright plate 15 of the guide rail 6, and are placed on the bottom plate 14 and can roll.

[0058] When the hoist 7 is attached to the guide rail 6 in this way, the rolling wheels 19 roll on the bottom plate 14 of the guide rail 6, and the hoist 7 becomes movable along the longitudinal direction while suspending the sliding door 3. As a result, the sliding door 3 moves smoothly in its longitudinal direction along the guide rail 6 by pulling it in the opening / closing direction, and the entrance 2 can be opened and closed.

[0059] 6(a) shows a configuration in which casters 46 are provided on the lower end surface of the sliding door 3, and these casters 46 move along guide grooves 47 provided in a floor 48. However, the present invention is characterized solely by the configuration of the hanging guide device 1 for sliding doors, and is not limited to a configuration in which the lower end of the sliding door 3 is guided on the floor surface.

[0060] Therefore, a configuration may be adopted in which casters or protrusions are provided on the lower end of the sliding door 3 or on the floor surface, and the casters or protrusions are moved relatively along grooves or guide rails provided on the floor surface or the lower end of the sliding door 3, or a configuration may be adopted in which a small gap is provided between the lower end of the sliding door 3 and the floor surface, and the sliding door 3 is simply suspended by the suspension device 7, and is not supported by the floor surface. Alternatively, a configuration may be adopted in which a guide means of another configuration is interposed between the lower end of the sliding door 3 and the floor surface.

[0061] According to the present invention, when the rolling wheels 19 of the lifting device 7 roll and move on the bottom plate 14 of the guide rail 6, even if the sliding door 3 moves to the side in the traveling direction (depth direction, etc.), the guide wheels 20 abut against the upright plate 15 of the guide rail 6 and rotate, allowing for smooth movement.

[0062] The guide rail 6 has a curved portion when viewed in a plane, and even if the hoisting device 7 moves to the side in the traveling direction, the guide wheel 20 abuts against the upright plate 15 of the guide rail 6 and rotates in the same manner as described above, so that the side wall portions 26, 27 of the hoisting device 7 do not come into contact with the upright plate 15 of the guide rail 6 and get caught or rub against it, allowing smooth movement.

[0063] In particular, as described above, in the hanging guide device 1 for sliding doors according to the present invention, the spacing dimension d1 of the gap 42 between the guide wheel 20 and the upright plate 15 is smaller than the spacing dimension d2 of the gap 43 between the bottom plate 14 of the guide rail 6 and the side wall portions 26, 27, and is also smaller than the spacing dimension d3 of the gap 44 between the upright plate 15 of the guide rail 6 and the head 31 of the bolt shaft 29 that attaches the rolling wheel 19 (in the modified example configuration shown in Figure 8, the spacing dimension d4 of the gap 45 between the upright plate 15 of the guide rail 6 and the rolling wheel 19).

[0064] Therefore, even if the sliding door 3 moves to the side in the traveling direction when it moves along the guide rail 6, the guide wheel 20 comes into contact with the standing plate 15 and rotates, so that the side walls 26, 27 of the lifting device 7 do not come into contact with the bottom plate 14, and the bolt shaft 29 attaching the rolling wheel 19 to the standing plate 15 of the guide rail 6 does not come into contact with the same, allowing for smooth movement.

[0065] Incidentally, in the hanging guide device for sliding doors 1 of the present invention, the guide rail 6 is made of long, thin plates made of steel or the like which are fixed together by welding to form a bottom plate 14 and an upright plate 15, and has a simple inverted T-shape. Therefore, it is relatively easy to manufacture and perform maintenance such as cleaning, and is also economical.

[0066] Furthermore, the guide rail 6 can be manufactured simply by welding the bottom plate 14 and the upright plate 15 together, so plate material of sufficient thickness can be used compared to bending processing, etc. As a result, even if the guide rail 6 is subjected to repeated loads caused by the movement of the heavy sliding door 3, it is possible to prevent damage and deformation that is likely to occur in conventional guide rails, reduce the frequency of maintenance, and maintain smooth movement of the hoisting device 7 for a long period of time.

[0067] The above describes the form for implementing the hanging guide device for sliding doors according to the present invention based on the examples. However, the present invention is not limited to such examples, and it goes without saying that there are various embodiments within the scope of the technical matters described in the claims. [Industrial Applicability]

[0068] The hanging guide device for sliding doors of the present invention is suitable for relatively heavy and sturdy sliding doors used to open and close entrances to factories, warehouses, garages, etc., and the guide rails are strong and resistant to deformation. By providing guide wheels in addition to rolling wheels, the sliding door can move smoothly, so the device can also be applied to fire sliding doors, fire shutters, etc. that need to be able to open and close smoothly even in an emergency. [Explanation of symbols]

[0069] 1. Suspension guide device for sliding doors 2. Building entrance / exit 3. Sliding Door 6 Guide rail 7 Hanging tool 10 Mounting bracket 11 Building Structure 12 Bolts that secure the mounting bracket to the building structure 14 Guide rail bottom plate 15 Guide rail stand plate 18 Main body board frame 19 Rolling Wheel 20 Guide Wheel 21 Guide wheel mounting piece 22 Sliding door fixing screw rod 25 Bottom of the main frame of the lifting device 26 Front side wall 27 Back side wall 28 Distance between paired guide wheels 29 Bolt shaft for mounting the rolling wheels 30 Nuts for attaching the rolling wheels 31 Head of bolt shaft for attaching rolling wheel 33 Guide wheel mounting portion of guide wheel mounting piece 34 Distance between the heads of the bolts that attach the pair of rolling wheels 37 Head of sliding door fixing screw rod 38 Screw part of sliding door fixing screw rod 39 Nut screwed onto sliding door fixing screw rod 42 Gap between guide wheel and guide rail upright plate 43 Gap between the bottom plate of the guide rail and the main plate frame of the side wall lifting device 44 Gap between the guide rail upright plate and the head of the bolt shaft that attaches the rolling wheel 45 Gap between guide rail upright and rolling wheel 46 Caster 47 Guide groove 48 Beds 50 Suspension guide device for sliding doors 51 Guide rail 52 Mounting bracket 53 Building Structure 54 Rolling wheels of lifting equipment 56 Hanging tool 57 Bottom of guide rail 58 Mounting shaft of lifting device 60 Both side walls of guide rail

Claims

1. A guide rail installed above an entrance and a hoisting tool attached to the guide rail for suspending the sliding door and moving along the guide rail, The guide rail is provided with a long and narrow bottom plate and an upright plate extending along the center of the bottom plate in a direction perpendicular to the longitudinal direction and standing vertically, and the cross section perpendicular to the longitudinal direction is formed in an inverted T shape; The hoisting device includes a main plate frame, rolling wheels, and guide wheels, and is movable along the guide rail; The main plate frame has a bottom and two side walls that stand vertically from both sides of the bottom in a direction perpendicular to the movement direction of the hoisting tool, and the cross section perpendicular to the movement direction of the hoisting tool is formed in a concave shape, The rolling wheels are provided in pairs on the inner surfaces of the side walls on both sides, rotatably on shafts fixed to the side walls, and facing each other in a direction parallel to the inner surfaces of the side walls; A guide wheel mounting piece is fixed to the inner surface of each of the side walls on both sides, and a horizontal guide wheel mounting portion is formed on each of the guide wheel mounting pieces so as to protrude toward the center of the main plate frame, The guide wheels are provided in pairs, two in total, on the inner surfaces of the side walls on both sides of the hoisting device in the front and rear of the direction of movement of the hoisting device, facing each other and rotatable on the guide wheel mounting parts in horizontal directions perpendicular to the inner surfaces of the side walls, with the rolling wheels sandwiched between them; The guide wheel is disposed at approximately the same height as the shaft on which the rolling wheel is rotatably mounted, This hanging guide device for sliding doors is characterized in that, when the hanging device is attached to the guide rail, a side wall portion, a rolling wheel and a guide wheel are located on either side of the standing plate in the middle, the rolling wheel is placed on the bottom plate of the guide rail and is capable of rolling on the bottom plate, and the guide wheel is located with a gap between it and the standing plate.

2. A hanging guide device for sliding doors as described in Claim 1, characterized in that when the hanging device is attached to the guide rail so that the guide rail's standing plate is positioned in the center of the side wall portions on both sides of the hanging device, the rolling wheels and the guide wheels, the gap dimension between the guide wheels and the guide rail standing plate is smaller than the gap dimension between the bottom plate of the guide rail and the side wall portions of the main plate frame, and is also smaller than the gap dimension between the guide rail standing plate and the head of the shaft to which the rolling wheels are attached or the gap between the guide rail standing plate and the rolling wheels.

3. A hanging guide device for a sliding door as described in claim 1 or 2, characterized in that the hanging device is provided with a sliding door fixing screw rod for attaching the sliding door to the bottom of the hanging device, and the sliding door fixing screw rod is configured to extend downward from the bottom.

Images