Door roller fixing structure

Abstract

To provide a sash roller fixing structure capable of improving workability for fixing a sash roller to a stile.SOLUTION: A door roller fixing structure 10 is a structure for fixing a door roller 3 in a hollow portion 25 of a bottom rail 2, wherein the bottom rail 2 has a lower piece portion 23 having an opening 232 through which the door roller 3 is inserted and defining a lower portion of the hollow portion 25, a fixing component 11 is fixed to a portion of the lower piece portion 23 adjacent to the door roller 3 disposed in the hollow portion 25 in an X-axis direction, and the fixing component 11 engages with the door roller 3.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a door roller fixing structure for fixing a door roller to a door body that opens and closes an opening. [Background technology]

[0002] A fixing structure for a door roller that is fixed to a stile has been known (see Patent Document 1). The stile has a cavity into which the door roller is inserted, and one side wall of the stile has a notch that opens at the end (edge) of the stile, and the other side wall of the stile has a through-hole that faces the notch. In addition, the door roller has protrusions that engage with the notch and the through-hole, respectively. In this fixing structure, the door roller is inserted into the gap from the end side of the stile, and each of the protrusions of the door roller engages with the edge of the cutout portion and the edge of the through hole, thereby fixing the door roller to the stile. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 61-131472 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the door roller fixing structure described in Patent Document 1, the door roller is simply inserted into the gap from the end side of the stile, so it is not possible to insert and fix the door roller into the gap from a location other than the end of the stile. This makes it difficult to fix the door roller at an arbitrary position, such as the middle position in the longitudinal direction of the stile, making it difficult to improve workability.

[0005] An object of the present invention is to provide a door roller fixing structure that can improve the ease of installation when fixing a door roller to a frame. [Means for solving the problem]

[0006] The door roller fixing structure of the present invention is a door roller fixing structure that fixes a door roller to a lower frame having a hollow portion, the lower frame having an opening through which the door roller passes and a lower piece portion that defines the lower part of the hollow portion, and a fixing part is fixed to the part of the lower piece portion adjacent to the door roller placed in the hollow portion in the longitudinal direction of the lower frame, and the fixing part engages with the door roller. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a door roller fixing structure that can improve the ease of fixing a door roller to a frame. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a door roller fixing structure according to an embodiment of the present invention; [Figure 2] FIG. 2 is an exploded perspective view showing the door roller fixing structure according to the embodiment. [Figure 3] FIG. 10 is a vertical cross-sectional view showing the door roller fixing structure according to the embodiment. [Figure 4] 4 is an explanatory diagram showing a state in which a door roller fixed by the door roller fixing structure according to the embodiment is used; FIG. [Figure 5] FIG. 4 is an explanatory diagram of a lower frame on which the door roller fixing structure according to the embodiment is configured. [Figure 6] 4A and 4B are explanatory views showing fixing parts used in the door roller fixing structure according to the embodiment. [Figure 7] 5A to 5C are explanatory views relating to the assembly of fixing parts used in the door roller fixing structure according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Configuration of this embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4, a door roller fixing structure 10 according to this embodiment is a structure for fixing a door roller 3 to a bottom frame 2 of a shoji screen in a fitting such as a sliding door having a shoji screen that can slide within a frame body. In the following description, the longitudinal direction of the lower frame 2 is the X-axis direction, the vertical direction of the lower frame 2 is the Y-axis direction, and the left-right direction (width direction) of the lower frame is the Z-axis direction. The X, Y, and Z axis directions are perpendicular to each other.

[0010] As shown particularly in Figure 5, the lower frame 2 is formed from an extruded aluminum profile, and has a pair of sight pieces 21 along the Y-axis direction, an upper piece 22 (upper sight piece) that is continuous with the pair of sight pieces 21 and along the Z-axis direction, and a lower piece 23 (lower sight piece) that is continuous with the pair of sight pieces 21 at a position below the upper piece 22, and the pair of sight pieces 21, upper piece 22 and lower piece 23 define a hollow portion 25 (hollow portion) that is continuous with the pair of sight pieces 21 in the X-axis direction. The pair of sight pieces 21 extend upward beyond the upper piece 22 and downward beyond the lower piece 23. The pair of sight pieces 21 also define the sides of the hollow portion 25. The lower piece 23 defines the lower part of the hollow portion 25. The lower piece 23 has an insertion hole 231 at its end portion, through which a fixing screw 5 (described later) is inserted, and an elongated (hole-like) opening 232, through which the door roller 3 can be inserted, at a position adjacent to the insertion hole 231 and at a position farther away from the end of the lower frame 2 than the insertion hole 231. The portion of the lower piece 23 between the end of the lower frame 2 and the opening 232 is continuous with the pair of sight pieces 21. The opening 232 may be formed at any position in the X-axis direction according to a preset fixing position of the door roller 3, in which case the insertion hole 231 is formed at a position adjacent to the opening 232 in the X-axis direction. In this lower frame 2, the door roller 3 is inserted into the opening 232 from below the lower frame 2 and placed in the hollow portion 25. The pair of sight piece portions 21 and upper piece portion 22 are in surface contact with the door roller 3 placed in the hollow portion 25 and hold the door roller 3.

[0011] The door roller 3 includes a roller frame 31 with a generally U-shaped cross section, wheels 32 journaled on the roller frame 31 and running on rails 6 (see FIG. 4) along the X-axis direction provided on the frame, and an end member 33 attached to the end of the roller frame 31 in the X-axis direction. The end member 33 is made of resin and includes a protrusion 331 that protrudes downward from the lower piece 23 and is disposed in the opening 232, and an engaged portion 332 that is disposed closer to the wheel 32 than the protrusion 331 and engages with an engaging piece 13 (described later). While there are two wheels 32, this is not limiting and any number may be provided depending on the desired performance. The engaged portion 332 is formed of multiple elastically deformable fin portions 333 that extend diagonally downward (downward), and an engaging rising portion 132 (described later) is inserted between the multiple fin portions 333. The multiple fin portions 333 constitute so-called fixer portions, and for example, for a lower frame 2 having a notch formed in the lower piece portion 23 that continues to the end, when the door roller 3 is inserted into the hollow portion 25 in the X-axis direction from the end, this fixer portion positions the door roller 3 in the X-axis direction by bending and pressing against a protrusion or the like that remains on the side of the notch along the X-axis direction. Note that, although the fixer portion is made of resin in this embodiment, it may also be made of metal. Furthermore, for example, when the door roller 3 is inserted into the hollow portion 25 from the end of the lower frame 2, the protrusion 331 abuts against the protrusion and prevents the door roller 3 from entering too far into the hollow portion 25.

[0012] The door roller fixing structure 10 is configured by fixing the fixing part 11 to the lower piece portion 23 and engaging with the door roller 3 arranged in the hollow portion 25.

[0013] As shown particularly in Figure 6, in this embodiment the fixed part 11 is made of metal and is formed roughly in the shape of a ladle, and has a fixed piece portion 12 that is fixed to the part of the lower piece portion 23 that is adjacent to the door roller 3 in the X-axis direction, and an engaging piece portion 13 that is continuous with the fixed piece portion 12, is positioned in the opening 232, and engages with the door roller 3.

[0014] The fixing piece portion 12 is arranged along the X-axis direction and has a tubular extending burring portion 121. A threaded portion 122 into which a fixing screw 5 serving as a fastener is threadedly fixed is formed on the inner peripheral surface of the burring portion 121. The fixing piece portion 12 is arranged in the hollow portion 25, and is fixed to the lower frame 2 in a state aligned with the lower piece portion 23 by threading the fixing screw 5, which passes through the insertion hole 231 of the lower piece portion 23 from below the lower frame 2, into the threaded portion 122.

[0015] The engagement piece 13 has a main body piece 131 arranged along the X-axis direction and an engagement raised portion 132 extending upward from one end of the main body piece 131 on the opening 232 side. The engagement piece 13 and the fixed piece 12 are connected by a continuous piece 14 along the Y-axis direction, and the upper end of the continuous piece 14 is connected to the end of the fixed piece 12 on the opening 232 side, and the lower end of the continuous piece 14 is connected to the other end of the main body piece 131 on the end side of the lower frame 2. The portion where the continuous piece 14 connects the engagement piece 13 and the fixed piece 12 is configured as a crank-shaped step 15. In a fixed state in which the fixed piece 12 is fixed to the lower piece 23 by the hollow portion 25, the main body piece 131 (the main body portion of the engagement piece 13) is positioned lower than the position of the fixed piece 12. Furthermore, a notch 135 along the X-axis direction is formed in the approximate center of the engagement piece 13 in the Z-axis direction. The notch 135 is also formed continuously in the continuous piece 14, and has a width dimension greater than the rail width of the rail 6 in the Z-axis direction. Therefore, interference of the fixed part 11 with the rail 6 is suppressed.

[0016] [Procedure for fixing door rollers] The procedure for fixing the door roller 3 to the bottom frame 2 will be described below. First, the door roller 3 is inserted into the opening 232 from below the lower frame 2, and the door roller 3 is placed in the hollow portion 25 as shown in Figure 7. At this time, the lower frame 2 is held by surface contact with the door roller frame 31. In addition, a gap 7 is formed between the lower piece 23 and the end member 33 of the door roller 3. Next, the fixing piece portion 12 of the fixing part 11 is inserted into the gap 7 from below the lower frame 2. Subsequently, by rotating the fixing part 11, the fixing piece portion 12 is arranged along the lower piece portion 23 in the hollow portion 25, and the main body piece portion 131 of the engaging piece portion 13 is arranged along the lower portion of the end member 33, and the engaging raised portion 132 is inserted between the multiple fin portions 333 of the end member 33. Then, the fixing screw 5 is inserted into the insertion hole 231 from below the lower piece portion 23 and screwed into the threaded portion 122 of the burring portion 121 of the fixing piece portion 12. At this time, the continuous piece 14 is disposed opposite the end member 33 in the X-axis direction. In this way, by engaging the fixing part 11 with one end of the door roller 3 held in the hollow portion 25 on the side of the end member 33, a door roller fixing structure 10 is formed and the door roller 3 is fixed to the lower frame 2.

[0017] According to the door roller fixing structure 10 described above, the door roller 3 can be placed in the hollow portion 25 from below the lower frame 2, and the door roller 3 placed in the hollow portion 25 can be fixed to the lower frame 2 by engaging with the fixing part 11 fixed to the part of the lower piece 23 of the lower frame 2 that is adjacent to the door roller 3. This makes it possible to set the fixing position of the door roller 3 to any position along the X-axis direction on the lower frame 2, improving workability.

[0018] [Variations] In the above embodiment, the opening 232 is formed in the shape of an elongated hole, but it is not limited to this and may be a notched opening that continues to the end of the bottom frame 2. In this case, forming the opening in the shape of a notch reduces the strength of the bottom frame 2 compared to when the opening 232 is formed in the shape of an elongated hole, so the bottom frame 2 is reinforced with reinforcing metal fittings or the like. Also, the door roller 3 is placed in the hollow portion 25 from below the bottom frame 2, but it may also be placed in the hollow portion 25 by inserting it from the end of the bottom frame 2 in the X-axis direction. In this case, the configuration of the protrusion 331 may be omitted. In the above embodiment, the opening 232 is formed near the end of the lower frame 2, but it may be formed at any position in the X-axis direction of the lower frame 2 depending on the position where the door roller 3 is arranged. For example, in the case of a large shoji screen, the opening 232 may be formed in the middle of the lower frame 2 in the X-axis direction, in addition to being formed near the end of the lower frame 2. In the above embodiment, a burring portion 121 is formed on the fixing piece portion 12, but this is not limited to this. If the fixing piece portion 12 can be fixed to the lower piece portion 23 sufficiently as necessary, it is not necessary to form a burring portion 121 extending cylindrically by burring processing. In the above embodiment, the step 15 is formed in the fixed part 11, and in the fixed state, the main body piece 131 of the engaging piece 13 is positioned lower than the fixed piece 12. However, this is not limiting, and for example, if the engaging piece 13 can be positioned below the door roller 3 and engaged with the door roller 3 even without the step 15, the step 15 may be omitted. In this case, the engaging piece 13 is directly continuous with the fixed piece 12. In the above embodiment, the fixing piece 12 is disposed in the hollow portion 25, but this is not limiting, and the fixing piece 12 may be disposed, for example, along the lower surface of the lower piece 23 instead of in the hollow portion 25. In this case, the fixing screw 5 may pass through the fixing piece 12 and be screwed into the lower piece 23 or a locking nut. In the above embodiment, the engagement piece 13 has a notch 135 formed along the X-axis direction, but if the engagement piece 13 is positioned so that it does not interfere with the rail 6 when the door roller 3 runs on the rail 6, the configuration of the notch 135 may be omitted. In the above embodiment, the engagement piece portion 13 engages with the door roller 3 by inserting the engagement rising portion 132 between the multiple fin portions 333 on the end member 33 of the door roller 3, but this is not limited to this, and if engagement is possible in other engagement forms, the configuration such as the multiple fin portions 333 may be omitted. In the above embodiment, the fixing part 11 is made of metal, but the fixing part 11 is not limited to this and may be made of other materials as long as it has the strength to fix the door roller 3. The fixture may be a sliding door, a single sliding window, or a double sliding window, as long as the sliding screen moves by the movement of the rollers 3.

[0019] [Summary of the present invention] (1) The door roller fixing structure of the present invention is a door roller fixing structure for fixing a door roller to a lower frame having a hollow portion, wherein the lower frame has an opening through which the door roller passes and a lower piece portion that defines the lower part of the hollow portion, and a fixing part is fixed to the part of the lower piece portion adjacent to the door roller arranged in the hollow portion in the longitudinal direction of the lower frame, and the fixing part engages with the door roller. According to the door roller fixing structure of the present invention, the door roller can be placed in the hollow portion of the lower frame from below through the opening, and the door roller placed in the hollow portion can be fixed to the lower frame by engaging the fixing part fixed to the above-mentioned part of the lower piece of the lower frame. This makes it possible to set the fixing position of the door roller at any position along the length of the lower frame, improving workability. Here, the opening in the lower piece may be a hole-shaped opening, or may be a notch-shaped opening that continues to the end of the lower frame. (2) In the door roller fixing structure of the present invention, the opening of the lower piece portion may be formed in a hole shape at a position spaced apart from the end of the lower frame. With this configuration, even if the aforementioned opening is formed in the lower piece portion, the end of the lower frame is not cut out and the lower frame is continuous between its end and the opening, so the strength of the lower frame, particularly the strength around the end of the lower frame, can be increased, and for example, the joint strength with the vertical frame joined to the end of the lower frame can be improved. (3) In the door roller fixing structure of the present invention, the fixing part may have a fixing piece portion fixed to a portion of the lower piece portion adjacent to the door roller, and an engaging piece portion continuous with the fixing piece portion, positioned in the opening, and engaging with the door roller. With this configuration, the fixing piece is fixed to the part of the lower piece adjacent to the door roller, and the engaging piece is positioned in the opening of the lower piece and engages with the door roller, so that the door roller can be easily fixed to the lower frame by the fixing part. (4) In the door roller fixing structure of the present invention, the fixing piece portion may be arranged along the lower piece portion in the hollow portion and may be fixed by a fixing device that penetrates the lower piece portion from below the lower frame. With this configuration, the fixed piece can be easily fixed by simply passing the fixing device through the lower piece from below the lower frame and fixing the fixed piece placed in the hollow section, and this fixing also makes it possible to easily position the engaging piece continuous with the fixed piece in the opening and engage with the door roller. (5) In the door roller fixing structure of the present invention, a burring portion extending cylindrically may be formed in the fixing piece portion, and a threaded portion into which the fixing device is threadedly fixed may be formed in the burring portion. According to this configuration, the fixing strength of the fixing piece portion can be increased by screwing the fixing tool into the threaded portion of the burring portion described above. (6) In the door roller fixing structure of the present invention, a step portion is formed between the fixed piece portion and the engaging piece portion, and in a fixed state in which the fixed piece portion is fixed to the lower piece portion by the hollow portion, the main body portion of the engaging piece portion may be positioned at a position lower than the position of the fixed piece portion. With this configuration, the main body of the engaging piece is positioned at a lower position than the position of the fixed piece described above, so that even a door roller that is inserted from the end of the lower sill and has a protrusion that protrudes downward to abut against the lower piece and prevent the door roller from entering too far into the hollow part of the lower sill can be used in the door roller of the present invention, and the engaging piece of the fixed part in the fixed state can be engaged from below the door roller. (7) In the door roller fixing structure of the present invention, the engaging piece portion may have a notch along the rail on which the door roller runs, and the notch may have a width dimension larger than the rail width of the rail. With this configuration, when the door roller is placed on the rail on which it runs, the engaging piece portion can be prevented from interfering with the rail, allowing the door roller to run smoothly. (8) In the door roller fixing structure of the present invention, the door roller may have an engaged portion, and the engaging piece portion may have an engaging raised portion that extends upward from an end of the engaging piece portion and engages with the engaged portion. According to this configuration, the engagement raised portion engages with the engaged portion of the door roller, thereby further increasing the fixing strength of the door roller to the bottom frame. (9) In the roller fixing structure of the present invention, the engaged portion may be formed of a plurality of elastically deformable fin portions extending downward, and the engaging raised portion may be inserted between the plurality of fin portions to engage with the engaged portion. With this configuration, the engagement piece can be easily engaged with the door roller by inserting the engagement raised portion between the plurality of fin portions. (10) In the door roller fixing structure of the present invention, the lower frame has a pair of sight pieces that define the sides of the hollow portion, the door roller is held by surface contact with the pair of sight pieces, and the fixing part may engage with one end of the door roller. With this configuration, by inserting the door roller into the opening in the lower piece and placing it in the hollow section, the door roller is held by surface contact with the pair of visible surfaces, and in this held state the fixing component can be fixed to the lower piece and engaged with the door roller, making it easy to assemble the fixing component. [Explanation of symbols]

[0020] 10...door roller fixing structure, 11...fixing part, 12...fixing piece portion, 121...burring portion, 122...screwed portion, 13...engaging piece portion, 131...main body piece portion, 132...engaging rising portion, 135...cutout portion, 14...continuous piece, 15...step portion, 2...bottom frame, 21...sight piece portion, 22...upper piece portion, 23...lower piece portion, 231...insertion hole, 232...opening, 25...hollow portion, 3...door roller, 31...door roller frame, 32...wheel, 33...end member, 331...protrusion, 332...engaged portion, 333...fin portion, 5...fixing screw, 6...rail, 7...gap.

Claims

1. A door roller fixing structure for fixing a door roller to a lower frame having a hollow portion, The lower frame has an opening through which the door roller passes and a lower piece portion that defines a lower portion of the hollow portion, A fixing part is fixed to the portion of the lower piece portion adjacent to the door roller arranged in the hollow portion in the longitudinal direction of the lower frame, The fixed part engages with the door roller. A door roller fixing structure characterized by the above.

2. The door roller fixing structure according to claim 1, The opening of the lower piece is formed in a hole shape at a position spaced from the end of the lower frame. A door roller fixing structure characterized by the above.

3. The door roller fixing structure according to claim 1, The fixing part has a fixing piece portion fixed to a portion of the lower piece portion adjacent to the door roller, and an engaging piece portion continuous with the fixing piece portion, disposed in the opening, and engaged with the door roller. A door roller fixing structure characterized by the above.

4. The door roller fixing structure according to claim 3, The fixing piece is disposed along the lower piece in the hollow portion and is fixed by a fixing tool that penetrates the lower piece from below the lower frame. A door roller fixing structure characterized by the above.

5. The door roller fixing structure according to claim 4, The fixing piece portion has a burring portion formed thereon that extends cylindrically, The burring portion is formed with a threaded portion to which the fixing tool is threadedly fixed. A door roller fixing structure characterized by the above.

6. The door roller fixing structure according to claim 3, A step is formed between the fixing piece and the engaging piece, In a fixed state in which the fixing piece is fixed to the lower piece by the hollow portion, the main body of the engaging piece is positioned lower than the position of the fixing piece. A door roller fixing structure characterized by the above.

7. The door roller fixing structure according to claim 6, The engaging piece has a notch along a rail on which the door roller runs, The cutout has a width dimension larger than the rail width of the rail. A door roller fixing structure characterized by the above.

8. The door roller fixing structure according to claim 3, The door roller has an engaged portion, The engaging piece portion has an engaging raised portion that extends upward from an end portion thereof and engages with the engaged portion. A door roller fixing structure characterized by the above.

9. The door roller fixing structure according to claim 8, the engaged portion is formed of a plurality of elastically deformable fin portions extending downward, The engagement raised portion is inserted between the plurality of fin portions and engages with the engaged portion. A door roller fixing structure characterized by the above.

10. The door roller fixing structure according to claim 1, The lower frame has a pair of facing pieces that define the sides of the hollow portion, The door roller is held by surface contact with the pair of sight pieces, The fixing part engages with one end of the door roller. A door roller fixing structure characterized by the above.

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