JP7704670B2 - Top-hung sliding doors, installation methods for top-hung sliding doors and maintenance methods - Google Patents

Description

The present invention relates to overhead sliding doors.

The top-hung sliding door is equipped with a hanger rail that extends in the width direction of the opening and a door body with a roller assembly attached to the upper end surface, and the door body opens and closes the opening while suspended from the hanger rail (Patent Document 1).

When performing maintenance on a top hung sliding door, it may be necessary to remove the door body in order to repair or replace it. However, because the upper end of the door body is fixed to a roller assembly located inside the hanger rail, with conventional top hung sliding doors, in order to remove the door body, it is necessary to remove the roller assembly, and in addition, removing the roller assembly can be difficult.
Practical Fairness 2-45427

The present invention aims to provide a top hung sliding door that is easy to install and maintain.

The first technical means adopted in the present invention is:
A hanger rail extending in the opening width direction;
a door body having a plurality of roller assemblies at a predetermined interval on an upper end surface;
In a top hung sliding door equipped with
The roller assembly includes:
A movable body having rollers and capable of rolling within the hanger rail;
a roller shaft extending in a vertical direction through an insertion portion of the movable body;
Equipped with
The roller shaft can be in a fixed state in which a lower portion thereof is inserted through an upper end surface of the door body and fixed to the upper end surface, and in a released state in which the roller shaft can move up and down relative to the upper end surface of the door body and the insertion portion,
An insertion hole for the roller shaft is formed at a predetermined portion of the upper surface of the hanger rail, and the roller shaft in the released state is movable upward through the insertion hole.
It is a top hung sliding door.
In one aspect, the roller shaft in the released state can be pulled out upward from the insertion hole.
In one embodiment, a plurality of the insertion holes are formed at the predetermined intervals on the upper surface of the hanger rail.

In one embodiment, when the roller shaft is in a fixed state and the door body is suspended from the hanger rail via the roller assembly, the lower end surface of the door body is spaced apart from the floor surface,
When the roller shaft is released and the door body moves downward relative to the roller shaft so that the lower end surface touches the floor surface, the lower end of the roller shaft is positioned below the upper end surface.

In one aspect, a lower half portion including the lower portion of the roller shaft is a screw portion, and the screw portion includes an upper portion located above an upper end surface of the door body and a lower portion located below the upper end surface,
The upper portion is provided with an upper nut,
A lower nut is provided on the lower portion,
The roller shaft is fixed by tightening the upper nut and the lower nut to sandwich the upper end surface between the upper nut and the lower nut.

In one aspect, the lower nut is removable from a lower end of the roller shaft;
When the lower nut is removed, the roller shaft is released and can move upward.
the upper nut is removable from the lower end of the roller shaft with the lower end of the roller shaft positioned above the upper end surface,
The roller shaft can be pulled upwardly out of the insertion hole with the lower nut and the upper nut removed.
In one embodiment, the lower nut is abutted against the lower surface of the upper end surface,
In a state in which the upper nut is spaced upward from the upper surface of the upper end surface,
By tightening the lower nut, the door body can be moved upward in conjunction with the rotation of the lower nut.

The second technical means adopted in the present invention is:
A hanger rail extending in the opening width direction;
A door body having a plurality of roller assemblies on an upper end surface thereof;
A method for installing a top hung sliding door comprising:
The roller assembly includes a roller shaft having a lower half portion which is a screw portion,
A lower portion of the roller shaft is inserted into the door body from the upper end surface of the door body with the lower end surface placed on a floor surface through an insertion hole formed on the upper surface of the hanger rail,
Moving the door body up to a hanging position by rotating a nut provided at an insertion portion of the roller shaft located inside the door body;
Includes.

In one aspect, the roller shaft is inserted into the hanger rail through the insertion hole, and the lower portion of the roller shaft is inserted into the door body from the upper end surface of the door body with the lower end surface placed on the floor surface.
In one aspect, the roller assembly is inserted into the hanger rail from its longitudinal end, the upper end portion of the roller shaft is moved upward so as to protrude from the insertion hole, and the lower portion of the roller shaft is inserted into the door body from the upper end surface of the door body with the lower end surface placed on the floor surface.

The third technical means adopted by the present invention is:
A hanger rail extending in the opening width direction;
A door body having a plurality of roller assemblies on an upper end surface thereof;
A maintenance method for an upper hung sliding door comprising:
The roller assembly includes a roller shaft having a screw portion at its lower half, and a nut is provided at an insertion portion of the roller shaft inserted into the door body from the upper end surface of the door body to determine the suspension position of the door body;
By rotating the nut, the door body is moved downward so that the lower end surface of the door body is placed on the floor surface,
By moving the roller shaft upward through an insertion hole formed on the upper surface of the hanger rail, the insertion state of the lower portion of the roller shaft with respect to the upper end surface of the door body is released.
Includes.

In one aspect, the method includes a step of pulling the roller shaft upwardly out of the insertion hole, and after pulling out the roller shaft, removing the door body and/or the movable body of the roller assembly (a base with a roller).
In one aspect, the method includes removing the door body with the roller axle in an upward position, and after removing the door body, removing the roller assembly from the longitudinal end of the hanger rail with the roller axle in a downward position.

In the overhead sliding door of the present invention, an insertion hole is formed on the upper surface of the hanger rail, and the roller shaft of the roller assembly can move upward through the insertion hole. When installing or maintaining the overhead sliding door, the upward movement of the roller shaft can be utilized as necessary (typically by inserting the roller shaft from the upper surface of the hanger rail or pulling the roller shaft out of the hanger rail), improving ease of installation and maintenance.

FIG. 2 is a front view of an upper hung sliding door (with the door body in a closed position) according to this embodiment, as viewed from the outdoor side. FIG. 2 is a vertical cross-sectional view of an upper hung sliding door according to the present embodiment. 1 is a front view and a cross-sectional view of an upper hung sliding door according to an embodiment of the present invention, with a portion thereof omitted. FIG. 2 is a front view of the door body of the upper hung sliding door according to the present embodiment, as viewed from the outdoor side. FIG. 2 is a vertical cross-sectional view of a door body of an upper hung sliding door according to the present embodiment. FIG. 2 is a cross-sectional view of a door body of an upper hung sliding door according to the present embodiment. FIG. 2 is a diagram showing a hanger rail according to the embodiment; FIG. 2 is a diagram showing a roller assembly according to the embodiment; 10A to 10C are diagrams illustrating the installation process of the upper hung sliding door according to this embodiment. 10A to 10C are diagrams illustrating the installation process of the upper hung sliding door according to this embodiment. 10A to 10C are diagrams illustrating the installation process of the upper hung sliding door according to this embodiment. 10A to 10C are diagrams illustrating the installation process of the upper hung sliding door according to this embodiment.

The embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the overhead sliding door according to this embodiment comprises a door body 1 and a hanger rail 2 located above the opening and extending in the width direction of the opening. The door body 1 is suspended by a plurality of roller assemblies 3 provided at the upper end so that it can move in the width direction of the opening relative to the hanger rail 2. In the illustrated embodiment, three roller assemblies 3 are provided at a predetermined interval D1 (see FIG. 1) in the width direction of the door body 1, but the number of roller assemblies 3 is appropriately selected according to the width dimension of the door body 1, and the number of roller assemblies 3 may be, for example, two. The overhead sliding door according to this embodiment is a single sliding door, but the overhead sliding door may also be a sliding door with two doors.

As shown in Figures 4 to 6, the door body 1 has an upper end surface 10, a lower end surface 11, a door leading end surface 12, and a door trailing end surface 13, and a reinforcing plate 14 is fixed to the underside of the upper end surface 10. An L-shaped guide piece 15 is fixed to the lower end surface 11 of the door body 1, consisting of a horizontal piece 150 and a vertical piece 151.

The door body 1 in this embodiment is composed of a main body formed by connecting narrow slats 16 extending in the height direction in the width direction, and an upper frame 10', a lower frame 11', a front vertical frame 12', and a rear vertical frame 13' provided at the upper end, lower end, leading end, and trailing end of the main body.

The upper frame 10', lower frame 11', leading edge vertical frame 12', and trailing edge vertical frame 13' have a U-shaped cross-section made up of the opposing outdoor and indoor facing pieces and the facing piece, and the facing surfaces of the upper frame 10', lower frame 11', leading edge vertical frame 12', and trailing edge vertical frame 13' are the upper end surface 10, the lower end surface 11, the leading edge end surface 12, and the trailing edge end surface 13.

As shown in Figure 6, each slat 16 has a U-shaped cross-section consisting of an outdoor facing surface 160 and left and right facing pieces 161, 162. The facing pieces 161, 162 are overlapped and connected in the width direction to form the main body of the door body 1. The outdoor facing surface of the door body 1 is made up of multiple outdoor facing surfaces 160, and the indoor side is open.

As shown in FIG. 8, the roller assembly 3 includes a plurality of rollers 30, a base 31 that rotatably supports the rollers 30, a cylindrical insertion portion 32 provided on the base 31, and a roller shaft 4 that is inserted into the insertion portion 32. In the roller assembly, the rollers 30, the base 31, and the insertion portion 32 form a moving body 3', and the roller shaft 4 inserted into the insertion portion 32 connects the moving body 3' to the door body 1. In the illustrated embodiment, each roller assembly 3 includes four rollers 30, but the number of rollers 30 is not limited.

The lower portion of the roller shaft 4 extends into the door body 1 through insertion holes 100, 140 (see FIG. 9) formed in the upper end surface 10 of the door body 1 and the reinforcing plate 14. The insertion holes 100, 140 are integral and form an insertion hole in the upper end surface 10 of the door body 1. The roller shaft 4 is a bolt, and a screw portion 40 is formed on the peripheral surface of the lower half of the roller shaft 4, including the lower portion, and a head portion 41 is provided at the upper end. When the door body 1 is suspended, the roller shaft is in a state in which the head portion 41 abuts against the upper end of the insertion portion 32. A grip portion 42 with an opposing flat surface is formed adjacent to the upper side of the screw portion 40 on the roller shaft 4.

As shown in FIG. 12, when the door body 1 is suspended from the hanger rail 2, the screw portion 40 is composed of an upper portion 40A located above the upper end surface 10 of the door body 1 and a lower portion 40B located below the upper end surface 10 of the door body 1 and the reinforcing plate 14, and the roller assembly 3 further includes an upper nut 5 provided on the upper portion of the screw portion 40 of the roller shaft 4, and a lower nut 6 provided on the lower portion of the screw portion 40 of the roller shaft 4. In FIG. 8, the washer 50 is shown separately from the upper nut 5, but the upper nut 5 may be an integral type with the washer 50.

With the lower portion of the roller shaft 10 inserted through the upper end surface 10 and reinforcing plate 14 of the door body 1, the upper end surface 10 and reinforcing plate 14 are clamped from above and below with an upper nut 5 and a lower nut 6, thereby determining the position of the upper end surface 10 of the door body 1 relative to the roller shaft 4, fixing the height position of the door body 1 relative to the roller shaft 4, and putting the door body 1 in a suspended state. When the door body 1 is in a suspended state, the lower end surface 11 of the door body 1 is spaced upward from the floor surface FL.

As shown in FIG. 11, even when the door body 1 moves downward relative to the roller shaft 4 and the lower end surface 11 is on the floor surface FL, the lower end of the roller shaft 4 is located below the upper end surface 10 of the door body 1 and the reinforcing plate 14, forming the lower portion 40B. Therefore, when installing or maintaining the overhead sliding door, the door body 1 can be placed on the floor for work. In addition, when the door body 1 is on the floor, the lower nut 6 abutting the lower surface of the reinforcing plate 14 can be rotated to push the door body 1 up against the roller shaft 4 and place it in a suspended state. In addition, when the lower nut 6 is rotating, the gripping portion 42 of the roller shaft 4 can be gripped with a specified tool to fix the roller shaft 4, improving the workability of rotating the lower nut 6.

A lower frame 7 extending in the opening width direction is embedded in the floor surface FL, and a guide groove 70 extending in the movement direction of the door body 1 is formed by the lower frame 7. The lower frame 7 extends in the left-right direction so as to be located below the opening (door body 1 in the opening closed position) and below the door body 1 in the opening open position. In other words, the lower frame 7 has a length approximately twice the width dimension (opening width dimension) of the door body 1. The upper surface 71 of the lower frame 7 is approximately flush with the floor surface FL. When the door body 1 is in a suspended state, the vertical piece 151 of the guide piece 15 fixed to the lower end surface 11 of the door body 1 is located in the guide groove 70, and when the door body 1 moves, the lower end side of the door body 1 is guided along the guide groove 70.

As shown in Figures 1 and 2, the opening in this embodiment is formed by a leading edge vertical frame 17A, a trailing edge vertical frame 17B, an upper frame 17C, and a floor surface FL. As shown in Figures 1 and 3, an upper door stopper 25 is formed at the trailing edge end of the hanger rail 2, and a lower door stopper 72 is formed at the trailing edge end of the lower frame 7. When the opening is open, the trailing edge end face 13 of the door body abuts against the trailing edge door stoppers 25, 72. When the opening is closed, the leading edge end face 12 of the door body 1 abuts against the trailing edge vertical frame 18, and the opening is closed by the door body 1.

The hanger rail 2 extends in the left-right direction so as to be located above the opening (the door body 1 in the opening closed position) and above the door body 1 in the opening open position. In other words, the hanger rail 2 has a length that is approximately twice the width dimension (opening width dimension) of the door body 1. As shown in FIG. 7, the hanger rail 2 has a top surface 20, an outdoor facing surface 21 that hangs down from the top surface 20, an indoor facing surface 22, an outdoor horizontal surface 23 formed at the lower end of the outdoor facing surface 21, and an indoor horizontal surface 24 formed at the lower end of the indoor facing surface 22. The upper surface of the outdoor horizontal surface 23 and the upper surface of the indoor/outdoor horizontal surface 24 form rails on which the rollers 30 of the roller assembly 3 roll. A door stopper 25 is provided at the end of the hanger rail 2 on the door tail side (FIGS. 1 and 3).

The height dimension of the internal space of the hanger rail 2, specifically the vertical dimension between the underside of the top surface 20 and the top surfaces of the outdoor horizontal plane 23 and indoor horizontal plane 24, is slightly larger than the height dimension of the roller 4, i.e., the diameter of the roller 4. The clearance between the dimension of the internal space of the hanger rail 2 and the diameter of the roller 4 is small, and by restricting the roller assembly 3 from moving upward significantly within the hanger rail 2 when the door body 1 is in a suspended state, the door body 1 is prevented from tilting significantly when it is opened or closed. In other words, the height dimension of the internal space of the hanger rail is limited.

The clothes rail 2 is supported by multiple mounting brackets 8 at specific locations in the length direction. The mounting brackets 8 have a cross-sectional shape that embraces the clothes rail 2, and the upper surface is supported in a protruding manner from the main body (frame body 19A in the illustrated embodiment) by an L-shaped support piece 19 fixed to the main body.

The upper surface 20 of the hanger rail 2 has multiple insertion holes 200 formed between the portions supported by the mounting bracket 8. In this embodiment, the clearance between the lower surface of the upper surface 20 of the hanger rail 2 and the upper ends of the rollers 30 is set to a minimum to suppress tilting of the door body 1 when it is opened or closed, while the door body 1 is positioned so that the insertion holes 200 are located directly above the roller shaft 4 of the roller assembly 3, and the upper end portion of the roller shaft 4 protrudes above the upper surface 20 of the hanger rail 2 from the insertion holes 200 in the upper surface 20, thereby allowing the roller shaft 4 to move upward.

In this embodiment, the number of the insertion holes 200 corresponds to the number of the roller assemblies 3, and the insertion holes 200 are formed at intervals D1. In this embodiment, the intervals D1 between the three insertion holes 200 formed on the upper surface 20 of the hanger rail 2 are made to match the intervals D1 between the three roller shafts 4 of the three roller assemblies 3, so that the positioning of the multiple roller shafts 4 (three in the illustrated embodiment) and the multiple insertion holes 200 (three in the illustrated embodiment) can be performed simultaneously. In other words, by positioning the door body 1 once, the multiple roller shafts 4 can be moved upward or inserted and removed through the insertion holes 200. When the roller assembly 3 is connected to the upper end of the door body 1, the roller shafts 4 are matched with the insertion holes 100 and 140 formed on the upper end surface 10 of the door body 1. The insertion hole has a dimension such that the largest diameter part of the roller shaft 4, i.e., the head 41, can be inserted. In the embodiment shown in FIG. 7, the insertion hole 200 is a perfect circle, but the insertion hole 200 may also be a long hole that is horizontally elongated in the length direction of the hanger rail 2.

A cover 9 is provided to cover the upper end of the overhead sliding door. The cover 9 has an attachment piece 90 attached to the frame, an upper surface 91 that extends from the frame to the outdoor side at an angle downward, and an outdoor facing surface 92 that hangs down from the outdoor end of the upper surface 91, and a lower portion 920 of the outdoor facing surface 92 is partially detachable from the outdoor facing surface 92. In this embodiment, the lower portion 920 of the outdoor facing surface 92 is detachable using screws.

By removing the lower portion 920 of the outdoor facing surface 92 of the cover 9, the space above the upper end surface 11 of the door body 1 can be accessed from the outdoor side, and the upper nut 5 can be rotated from the lower end of the roller shaft 4. The indoor side portion of the door body 1 is open, and the space below the upper end surface 11 of the door body 1 and the reinforcing plate 14 can be accessed from the indoor side, and the lower nut 6 can be rotated. In one embodiment, the cover 9 is detachably attached to the frame, and when the roller shaft 4 is pulled out upward from the insertion hole 200 of the upper surface 20 of the hanger rail 2 during maintenance of the overhead sliding door, and when the roller shaft 4 is inserted from the insertion hole 200 of the upper surface 20 of the hanger rail 2 into the insertion portion 32 of the moving body 3' in the hanger rail 2, the cover 9 can be removed from the frame to secure space above the upper surface 20 of the hanger rail 2.

The installation method for the overhead sliding door of this embodiment will be explained with reference to Figures 1, 2, and 9 to 12.

As shown in Figures 1 and 2, the opening is formed by the leading edge vertical frame 17A, trailing edge vertical frame 17B, upper frame 17C, and floor FL, and the lower frame 7 is embedded in the floor FL adjacent to the outdoor side of the lower part of the opening. A door stop vertical frame 18 is erected adjacent to the outdoor side of the leading edge vertical frame 17A, and the leading edge end of the lower frame 7 is located in the door stop vertical frame 18, and a door stop part 72 is provided at the trailing edge end of the lower frame 7. A number of support pieces 19 are fixed at intervals in the opening width direction to the visible surface of the frame body 19A attached above the upper frame 17C, and the hanger rail 2 is supported by the mounting brackets 8 provided on each support piece 19, thereby attaching the hanger rail 2.

9, the roller assembly 3 is prepared in a disassembled state into a movable body 3' consisting of a roller 30 and a base 31 (including an insertion portion 32), a roller shaft 4, an upper nut 5, and a lower nut 6, and the insertion holes 100, 140 formed in the upper end surface 11 of the door body 1 are positioned below the insertion hole 200 formed in the upper surface 20 of the hanger rail 2, the vertical piece 15 of the guide piece 15 provided on the lower end surface 11 is inserted into the guide groove 70 of the lower frame 7, and the lower end surface 11 is placed on the floor surface FL. In this embodiment, with the lower end surface 11 placed on the floor surface FL, the horizontal piece 150 of the guide piece 15 abuts against the upper surface portion 71 of the lower frame 7. The moving body 3' is inserted into the hanger rail 2 from the end in the longitudinal direction of the hanger rail 2, and the moving body 3' is moved so that its insertion part 32 is positioned below the insertion hole 200 in the upper surface 20 of the hanger rail 2 and above the insertion holes 100, 140 formed in the upper end surface 11 of the door body 1.

As shown in FIG. 10, when the insertion portion 32 of the base 31 of the moving body 3' of the roller assembly 3 is positioned below the insertion hole 200 in the upper surface 20 of the hanger rail 2, the roller shaft 4 is inserted downward through the insertion hole 200, and before the lower end of the roller shaft 4 is inserted from the upper end surface 10 of the door body 1, the upper nut 5 is attached to the lower portion of the roller shaft 4 from the lower end of the roller shaft 4.

The roller assembly 3, assembled by inserting the roller shaft 4 into the insertion portion 32 of the moving body, can be inserted into the hanger rail 2 from the longitudinal end of the hanger rail 2 and moved to a predetermined position, and the roller shaft 4 can be moved upward so that the upper end protrudes from the insertion hole 200 in the upper surface 20 of the hanger rail 2, and the upper nut 5 can be attached to the lower portion of the roller shaft 4 from the lower end of the roller shaft 4, resulting in the state shown in FIG. 10.

As shown in FIG. 11, the lower portion of the roller shaft 4 with the upper nut 5 at the lower portion is inserted into the door body 1 through the upper end surface 10 and reinforcing plate 14 of the door body 1, and a lower nut 6 is provided at the insertion portion (lower portion 40B) of the roller shaft 4 located below the upper end surface 10 and reinforcing plate 14, and the lower nut 6 is abutted against the lower surface of the reinforcing plate 14. In this state, the lower end surface 11 (horizontal piece 150) of the door body 1 remains resting on the upper surface portion 71 of the lower frame 7.

As shown in FIG. 12, the lower nut 6 is rotated to move it upward along the lower portion 40B of the roller shaft 4, and the door body 1 is moved upward via the reinforcing plate 14 and the upper end surface 10. As the door body 1 moves upward, the lower end surface 11 of the door body 1 moves upward away from the floor surface FL, and the door body 1 is suspended. The upper end surface 11 of the door body 1 comes into contact with the upper nut 5, restricting the upward movement of the door body 1. The position of the upper nut 5 may be determined in the state shown in FIG. 10, or may be determined in the state shown in FIG. 11.

A maintenance method for a top hung sliding door according to this embodiment will be described. When performing maintenance on a top hung sliding door, it is necessary to remove the door body 1 and/or roller assembly 3. However, in this embodiment, the process of removing the door body 1 and roller assembly 3 is essentially the reverse of the process of installing a top hung sliding door, so in the following description, reference will be made to Figures 9 to 12 as appropriate.

In the state shown in Figure 12, when the lower nut 6 is rotated to move the lower nut 6 downward relative to the lower portion of the roller shaft 4, the door body 1 moves downward and the lower end surface 11 (horizontal piece 150) comes into contact with and rests on the floor surface FL (in this embodiment, the upper surface portion 71 of the lower frame 7), resulting in the state shown in Figure 11.

In the state shown in FIG. 11, the lower nut 6 is removed from the lower end of the roller shaft 4 (see FIG. 10), then the roller shaft 4 is moved upward so that the lower end is positioned above the upper end surface 11 of the door body 1, the upper nut 5 is removed from the lower end of the roller shaft 4, and the roller shaft 4 is further moved upward and removed from the insertion hole 200 in the upper surface 20 of the hanger rail 2 to return to the state shown in FIG. 9. By removing the roller shaft 4, it becomes possible to remove the door body 1, and also to remove the moving body 3' of the roller assembly 3 from the longitudinal end of the hanger rail 2.

When performing maintenance on the top-hung sliding door, it is not necessary to remove the roller shaft 4. In the state shown in FIG. 11, the lower nut 6 is removed from the lower end of the roller shaft 4, and the roller shaft 4 is moved upward, so that the upper end of the roller shaft 4 protrudes from the insertion hole 200 in the upper surface 20 of the hanger rail 2, and the roller shaft 4 is moved upward until the lower end is located above the upper end surface 11 of the door body 1. By releasing the insertion state of the lower part of the roller shaft 4 into the upper end surface 11 of the door body 1, the upper end side of the door body 1 becomes free, and with a predetermined clearance generated between the lower end of the roller shaft 4 and the upper end surface 11 of the door body 1, the door body 1 can be tilted and removed from the opening. With the door body 1 removed, the upper end of the roller shaft 4 can be moved downward until it is below the upper surface 20 of the hanger rail 2, and the roller assembly 3 can be removed from the end of the length of the hanger rail 2.

When replacing the door body 1 of the top hung sliding door, in the suspended state shown in FIG. 12, remove the lower nut 6 from the roller shaft 4, and while the upper end portion of the roller shaft 4 protrudes upward from the upper surface 20 of the hanger rail 2, move the roller shaft 4 upward to position the lower end of the roller shaft 4 above the upper end surface 11 of the door body 1 (typically, remove the upper nut 5 from the roller shaft 4 and then pull the roller shaft 4 out from the hanger rail 2), releasing the engagement of the lower end of the roller shaft 4 with the upper end surface 11 of the door body 1, thereby separating the roller shaft 4 from the door body 1, and removing the vertical piece 151 of the guide piece 15 at the lower end of the door body 1 from the guide groove 70 of the lower frame 7, and removing the door body 1.

Next, prepare a new door body 1, and with the lower end surface 11 of the door body 1 placed on the floor surface FL, position the lower end of the roller shaft 4 of the roller assembly 3 directly above the upper end surface 11 and the insertion holes 100, 140 of the reinforcing plate 14 (see Figure 10). At this time, the upper end portion of the roller shaft 4 protrudes upward from the insertion hole 200 formed in the upper surface 20 of the hanger rail 2, and an upper nut 5 is attached to the lower portion of the roller shaft 4. From the state shown in Figure 10, move the roller shaft 4 downward and insert the lower portion into the door body 1 through the insertion holes 100, 140. Attach the lower nut 6 to the lower portion 40B of the screw portion 40 of the roller shaft 4, rotate the lower nut 6 to push up the door body 1, and place the door body 1 in a suspended state (Figures 11 and 12).

When replacing the whole or part of the roller assembly 3 of the top-hung sliding door (e.g., the moving body 3' or the roller 30 of the moving body 3'), in the hanging state of FIG. 12, remove the lower nut 6 from the roller shaft 4, move the roller shaft 4 upward while protruding the upper end portion of the roller shaft 4 upward from the upper surface 20 of the hanger rail 2, position the lower end of the roller shaft 4 above the upper end surface 11 of the door body 1, remove the upper nut 5 from the roller shaft 4, and move the lower end of the roller shaft 4 upward at least to above the insertion part 32 of the roller assembly 3 (typically, pull it out from the hanger rail 2). The engagement state of the lower end of the roller shaft 4 with the insertion part 32 of the roller assembly 3 is released, and the moving body 3' and the roller shaft 4 are separated, and the moving body 3' of the roller assembly 3 becomes movable along the hanger rail 2, and the moving body 3' is removed from the end of the length direction of the hanger rail 2.

Alternatively, if the door body 1 is removed by moving the roller shaft 4 upward, after removing the door body 1, the roller shaft 4 can be moved downward to insert it into the insertion portion 32 so that the head portion 41 abuts against the upper end of the insertion portion 32, and the roller assembly 3 can be removed from the longitudinal end of the hanger rail 2.

A new moving body 3' is prepared and inserted from the end in the length direction of the hanger rail 2, and moved to a position corresponding to the insertion hole 200 on the upper surface 20 of the hanger rail 2, and the roller shaft 4 is inserted through the insertion hole 200 and inserted into the insertion portion 32 of the moving body 3'. After that, following the installation process of the door body 1 described above, the lower part of the roller shaft 4 is attached to the upper end of the door body 1.

If the door body 1 is also removed, a new roller assembly 3 can be prepared with the door body 1 removed, inserted from the longitudinal end of the hanger rail 2, moved to a position corresponding to the insertion hole 200 on the top surface 20 of the hanger rail 2, and the roller shaft 4 can be moved upward through the insertion hole 200 to reach the state shown in FIG. 10. After that, following the installation process of the door body 1 described above, the lower portion of the roller shaft 4 is attached to the upper end of the door body 1.

REFERENCE SIGNS LIST 1 Door body 10 Upper end surface 11 Lower end surface 15 Guide piece 150 Horizontal piece 151 Vertical piece 2 Hanger rail 20 Upper surface 200 Insertion hole 3 Roller assembly 3' Moving body 30 Roller 31 Base 32 Insertion portion 4 Roller shaft 40 Screw portion 5 Upper nut 6 Lower nut 7 Lower frame 70 Guide groove 71 Upper surface portion FL Floor surface

Claims (5)

A hanger rail extending in the opening width direction;
a door body having a plurality of roller assemblies at a predetermined interval on an upper end surface;
In a top hung sliding door equipped with
The roller assembly includes:
A movable body having rollers and capable of rolling within the hanger rail;
a roller shaft extending in a vertical direction through an insertion portion of the movable body;
Equipped with
The roller shaft can be in a fixed state in which a lower portion thereof is inserted through an upper end surface of the door body and fixed to the upper end surface, and in an unlocked state in which the roller shaft can move up and down relative to the upper end surface of the door body and the insertion portion,
An insertion hole for the roller shaft is formed at a predetermined portion of the upper surface of the hanger rail, and the roller shaft in the released state is movable upward through the insertion hole.
Top hung sliding door. A plurality of the insertion holes are formed at the predetermined intervals on the upper surface of the hanger rail.
The overhead sliding door according to claim 1. When the roller shaft is in a fixed state and the door body is suspended from the hanger rail via the roller assembly, the lower end surface of the door body is spaced apart from the floor surface,
When the roller shaft is released from the fixed state and the door body moves downward relative to the roller shaft so that the lower end surface touches the floor surface, the lower end of the roller shaft is located below the upper end surface.
3. The overhead sliding door according to claim 1 or 2. A hanger rail extending in the opening width direction;
A door body having a plurality of roller assemblies on an upper end surface thereof;
In a method for installing a top hung sliding door comprising:
The roller assembly includes a roller shaft having a lower half portion which is a screw portion,
A lower portion of the roller shaft is inserted into the door body from the upper end surface of the door body with the lower end surface placed on a floor surface through an insertion hole formed on the upper surface of the hanger rail,
The door body is raised to a hanging position by rotating a nut provided at an insertion portion of the roller shaft located inside the door body.
How to install overhead sliding doors. A hanger rail extending in the opening width direction;
A door body having a plurality of roller assemblies on an upper end surface thereof;
A maintenance method for a top hung sliding door comprising:
The roller assembly includes a roller shaft having a screw portion at its lower half, and a nut is provided at an insertion portion of the roller shaft inserted into the door body from the upper end surface of the door body to determine the suspension position of the door body;
By rotating the nut, the door body is moved downward so that the lower end surface of the door body is placed on the floor surface,
By moving the roller shaft upward through an insertion hole formed on the upper surface of the hanger rail, the insertion state of the lower portion of the roller shaft with respect to the upper end surface of the door body is released.
Including,
How to maintain overhead sliding doors.

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