JP6859232B2 - Door roller device and screen door - Google Patents

Description

The present invention relates to a door roller device that supports a shoji so as to be movable along a rail of a frame body, and a screen door provided with the door roller device.

Conventionally, as a door roller device provided on a screen door, a door roller device having both a derailment prevention function for preventing the wheels from coming off the rail of the frame and a disengagement prevention function for preventing the screen door from coming off the rail is known. (See, for example, Patent Document 1).
The door roller device described in Patent Document 1 includes a fixing member (mounting base portion), a movable member (door wheel bearing member), wheels (door wheel), and a retaining member.
The fixing member is a part fixed to the lower frame of the screen door.
The movable member is a portion that swings up and down with respect to the fixed member and is rotatably supported by the wheels. That is, by making the movable member swing up and down, even when the screen door is lifted, the movable member swings downward, and it is possible to prevent the wheels from coming off the rail.
The retaining member is pivotally supported so as to swing up and down with respect to the fixing member, and overlaps the rail when viewed from the prospective direction. That is, even when the screen door is lifted and a load is applied to the outdoor side of the screen door, it is possible to prevent the screen door from coming off the rail by being caught on the rail.

Utility Model Registration No. 2537622 (Figs. 1 to 5)

However, in the door roller device described in Patent Document 1, a detachment prevention member is separately required in order to provide the detachment prevention function. Therefore, the number of parts of the door roller device increases and the structure becomes complicated.
Therefore, there is a demand for a technique capable of simplifying the structure while having both a derailment prevention function and a disengagement prevention function.

In view of the above circumstances, it is an object of the present invention to provide a door roller device and a screen door capable of reducing the number of parts while having both a derailment prevention function and a detachment prevention function.

In order to achieve the above object, the door roller device according to the present invention is a door wheel device that supports the obstacle so as to be movable along the rail of the frame, with respect to the fixing member fixed to the obstacle and the fixing member. A movable member that is pivotally supported so as to swing up and down about the first axis, and a wheel that is rotatably supported by the movable member about the second axis and rolls on the rail. The movable member includes an overhanging portion in which a region overlapping the rail increases as the movable member swings downward, and the overhanging portion has an entire overhanging portion from the second axis. Is also characterized in that it is arranged on the side separated from the first axis.

In the present invention, the movable member pivotally supports the wheel so as to be rotatable, and is pivotally supported so as to swing up and down with respect to the fixed member. Therefore, even when a shoji such as a screen door is lifted, the movable member swings downward to prevent the wheels from coming off the rail. That is, the movable member has a derailment prevention function.
Further, the movable member includes the above-mentioned overhanging portion. Therefore, even when the shoji is lifted and a load is applied to the outdoor side of the shoji, the overhanging portion is caught on the rail, and the shoji can be prevented from coming off the rail. That is, the movable member (overhanging portion) has a detachment prevention function.
As described above, in the door roller device according to the present invention, the movable member can have both a derailment prevention function and a disengagement prevention function without separately providing a disengagement prevention member as in the conventional case. Therefore, according to the door roller device according to the present invention, there is an effect that the structure can be simplified while having both the derailment prevention function and the disengagement prevention function.

In particular, in the overhanging portion, the region overlapping the rail increases as the movable member swings downward. Therefore, even when the shoji is greatly lifted and a load is applied to the outside of the room, the overhanging portion is caught on the rail, effectively preventing the shoji from coming off the rail. be able to.

Further, in the above-described door roller device, the present invention is provided with an insertion groove that opens downward at the lower end of the fixing member and into which the rail is inserted, and the rail is formed on the side wall that constitutes the insertion groove. A projecting portion is provided so as to project toward the rail, and the tip of the projecting portion is closer to the rail than the overhanging portion.
By the way, when a load is applied to the shoji on the outdoor side and the overhanging portion is sandwiched between the rail and the frame constituting the shoji, the movable member is restricted from swinging downward. That is, the movable member cannot sufficiently exert the derailment prevention function and the disengagement prevention function.
In the present invention, an insertion groove having the above-mentioned protruding portion is provided at the lower end portion of the fixing member. Therefore, when a load is applied to the shoji on the outdoor side, the rail comes into contact with the tip of the protruding portion and does not sandwich the overhanging portion with the frame constituting the shoji. That is, the movable member is not restricted from swinging downward, and can sufficiently exert the derailment prevention function and the disengagement prevention function.

Further, according to the present invention, in the door roller device described above, the fixing member includes a fixing portion fixed to the vertical stile of the shoji, an extending portion extending upward from the fixing portion, and a tip of the extending portion. The extending portion is provided with a contact portion that bulges from the portion toward the vertical frame side of the frame body and extends upward, and comes into contact with the vertical frame when the shoji is moved along the rail. Is characterized in that it is elastically deformable in a bow shape that is convex toward the vertical frame side in response to a pressing force acting on the contact portion from the vertical frame.
By the way, when the shoji is moved along the rail and the shoji is brought into contact with the vertical frame constituting the frame, an impact force acts on the vertical frame and the vertical frame constituting the shoji. To do. When the operation is repeated, a gap may be formed in the joint portion between the upper stile and the lower stile and the vertical stile constituting the shoji, or the vertical frame may be deformed, depending on the above-mentioned impact force. ..
In the present invention, the fixing member includes the above-mentioned fixing portion, extending portion, and contact portion. Therefore, the extending portion can alleviate the impact with the vertical frame during the above-mentioned operation. Therefore, it is possible to prevent a gap from being formed at the joint portion between the upper stile and the lower stile and the vertical stile constituting the shoji. Moreover, the deformation of the vertical frame can be suppressed.

Further, the present invention is characterized in that, in the above-mentioned door roller device, the overhanging portion includes a tapered portion in which the thickness dimension along the prospective direction decreases toward the upward direction.
In the present invention, the overhanging portion includes the tapered portion described above. Therefore, when a load is applied to the shoji on the outdoor side and the overhanging portion is sandwiched between the rail and the frame constituting the shoji, a force for compressing the tapered portion in the prospective direction is applied. Therefore, the overhanging portion is slid down downward. That is, even when a load is applied to the shoji on the outdoor side and the overhanging portion is sandwiched between the rail and the frame constituting the shoji, the movable member is forced to swing downward. Therefore, the derailment prevention function and the disengagement prevention function can be fully exerted.

Further, in the above-described door roller device, the present invention has a rolling surface extending in an annular shape about the second axis and rolling on the rail, and a rolling surface protruding from the rolling surface. It is characterized in that it is provided with a flange portion that overlaps the rail, and the flange portion is provided only on one end side of the rolling surface in the direction along the second axis, which is separated from the overhanging portion. To do.

By the way, when the wheel has a structure having the above-mentioned rolling surface and a pair of flanges protruding from both ends in the direction along the second axis of the rolling surface and overlapping the rails, the following There are advantages and disadvantages.
The advantages are as follows.
A recess is formed by the rolling surface and the pair of collars, and the tip of the rail enters the recess, so that the pair of collars functions as a guide. Therefore, the wheel has an advantage that it can roll smoothly on the rail without rattling.
On the other hand, the problems are as follows.
When a load is applied to the outside of the room while the shoji is being lifted, the collar on the inside of the wheel rides on the rail. That is, since the wheel and the movable member are integrated, when the collar portion on the indoor side of the wheel rides on the rail as described above, the movable member also swings upward as the wheel moves upward. .. For this reason, there is a problem that the area of the overhanging portion that overlaps with the rail is reduced, and the disengagement prevention function cannot be fully exerted.

In the present invention, the flange portion is provided only on one end side of the rolling surface in the direction along the second axis , which is separated from the overhanging portion.
Therefore, the rail can be sandwiched between the single flange portion and the overhanging portion, and the single flange portion and the overhanging portion function as a guide. Therefore, the wheels can roll smoothly on the rails without rattling.
In addition, even when a load is applied to the outside of the room while the shoji is being lifted, the collar on the indoor side (the rail on the side close to the overhang) is omitted, so the rail is used. The wheels do not run on the rails. That is, since the wheels do not move upward, the movable member does not swing upward. Therefore, a sufficient area of the overhanging portion that overlaps the rail can be sufficiently secured, and the detachment prevention function can be sufficiently exerted.

Further, the present invention is characterized in that, in the above-mentioned door roller device, a convex portion protruding toward the rail is provided in a region of the overhanging portion that overlaps with the rail.
In the present invention, the overhanging portion is provided with the above-mentioned convex portion. Therefore, in the overhanging portion, the contact area in contact with the rail can be set to the minimum necessary area, and the sliding resistance to the rail can be reduced. Therefore, the movement of the shoji and the swing of the movable member can be smoothly performed.

Further, the present invention is characterized in that, in the above-mentioned door roller device, the movable member is formed in a tapered shape in which the length dimension from the swing axis of the movable member decreases as the movable member moves upward.
By the way, when a load is applied to the shoji on the outdoor side and a load is applied to the overhanging portion (movable member) from the rail on the indoor side, the movable member has a tip separated from the swing shaft. A phenomenon occurs in which the side tilts toward the indoor side. Therefore, in the movable member, the corner portion on the tip side and the upper side separated from the swing shaft is pressed against the stile constituting the shoji with a strong force. Therefore, the corner portion becomes a sliding resistance with respect to the frame body, and there is a possibility that the movable member cannot be smoothly swung.
In the present invention, the movable member is formed in the above-mentioned tapered shape. Therefore, the above-mentioned corner portion can be omitted, and the sliding resistance to the frame when the movable member swings can be reduced. Therefore, the movable member can be smoothly swung.

Further, the screen door according to the present invention is a screen door provided with a frame having an opening that communicates indoors and outdoors and a net material that covers the opening, and is attached to the frame and along the rail of the frame. It is characterized by including the above-mentioned door roller device that supports the screen door so as to be movable.
Since the screen door according to the present invention includes the above-mentioned door roller device, it has the same operation and effect as the above-mentioned door roller device.

According to the door roller device and the screen door according to the present invention, there is an effect that the structure can be simplified while having both the derailment prevention function and the disengagement prevention function.

It is a figure which looked at the fitting which concerns on this Embodiment 1 from the outdoor side. It is the figure which looked at the right vertical stile from the bottom. It is a perspective view of the joint part of the right vertical frame and the lower frame seen from the indoor side. It is an exploded perspective view of the 1st door roller device. It is the figure which looked at the 1st door wheel device from the left side in FIG. 3, and is the figure which shows the damper part. It is a figure which looked at the joint part of the right vertical frame and the lower frame from the indoor side, and is the figure which shows the shock absorbing function in the extending part. It is the figure which looked at the movable member from the outdoor side. FIG. 7 is a cross-sectional view taken along the line BB of FIG. 7A. It is the figure which looked at the 1st door car device in the operation regulation state from the outdoor side. It is the figure which looked at the 1st door wheel device in the operation allowable state from the outdoor side. It is a figure which looked at the joint part of the right vertical frame and the lower frame from the indoor side, and is the figure which shows the initial state of the 1st door wheel device. It is a figure which looked at the joint part of the right vertical frame and the lower frame from the indoor side, and is the figure which shows the state which adjusted the height of the screen door from the initial state. It is a figure which looked at the joint part of the right vertical frame and the lower frame from the indoor side, and is the figure which shows the state which the screen door was lifted. It is a schematic diagram which looked at the positional relationship of the lower stile, the wheel, the overhanging part, and a rail in the initial state from the direction along the rail. It is a schematic diagram which looked at the positional relationship of the lower stile, the first fixing member, and a rail in the initial state from the direction along the rail. Changes in the positional relationship between the lower stile, wheels, overhangs, and rails when the screen door is lifted while applying a load to the outdoor side of the screen door from the initial state shown in FIG. 10A from the direction along the rail. It is a schematic diagram as seen. The change in the positional relationship between the lower stile, the first fixing member, and the rail when the screen door is lifted while applying a load to the outdoor side of the screen door from the initial state shown in FIG. 10A is viewed from the direction along the rail. It is a schematic diagram. Changes in the positional relationship between the lower stile, wheels, overhangs, and rails when the screen door is lifted while applying a load to the outdoor side of the screen door from the initial state shown in FIG. 10A from the direction along the rail. It is a schematic diagram as seen. The change in the positional relationship between the lower stile, the first fixing member, and the rail when the screen door is lifted while applying a load to the outdoor side of the screen door from the initial state shown in FIG. 10A is viewed from the direction along the rail. It is a schematic diagram. Changes in the positional relationship between the lower stile, wheels, overhangs, and rails when the screen door is lifted while applying a load to the outdoor side of the screen door from the initial state shown in FIG. 10A from the direction along the rail. It is a schematic diagram as seen. The change in the positional relationship between the lower stile, the first fixing member, and the rail when the screen door is lifted while applying a load to the outdoor side of the screen door from the initial state shown in FIG. 10A is viewed from the direction along the rail. It is a schematic diagram. It is a perspective view which shows the 1st door wheel device which concerns on this Embodiment 2. It is an exploded perspective view of the 1st door roller device. It is a figure explaining the effect of this Embodiment 2. It is a figure explaining the effect of this Embodiment 2. It is a figure explaining the effect of this Embodiment 2.

Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the description of the drawings, the same parts are designated by the same reference numerals.

(Embodiment 1)
[Outline configuration of fittings]
FIG. 1 is a view of the fitting 1 according to the first embodiment as viewed from the outdoor side.
The "expected direction" described below is a direction along the depth of the fitting 1 (direction of arrow Ar in FIG. 3). A plane along the prospective direction may be referred to as a prospective plane, and a plane orthogonal to the prospective direction may be referred to as a finding plane.
The fitting 1 is composed of a sliding window. The fitting 1 includes a frame body 2, an inner shoji 3, an outer shoji (not shown), and a screen door 4.
The frame body 2 is composed of an upper frame 21, a lower frame 22, a left vertical frame 23 located on the left side in FIG. 1, and a right vertical frame 24 located on the right side in FIG. 1, and is an opening of a building. It is attached along the edge of the part Op.
Here, the left vertical frame 23 and the right vertical frame 24 correspond to the vertical frame according to the present invention.
Each of these frame members 21 to 24 is an extruded profile made of synthetic resin or a metal such as aluminum, and has a substantially uniform cross-sectional shape over the entire length.
Of these frame members 21 to 24, the lower frame 22 is formed with a rail 221 that projects upward and guides the movement of the screen door 4.
A rail-side ridge portion 222 that bulges toward the indoor side is formed at the tip portion of the rail 221 (see FIGS. 9A to 9C, 10A, and 10B).
The inner sash 3 and the outer sash (not shown) have the same configuration and are attached to the frame body 2 so as to be movable in the left-right direction in FIG.

The screen door 4 is a member corresponding to the shoji according to the present invention, is located on the outdoor side of the outer shoji (not shown), and is attached to the frame body 2 so as to be movable in the left-right direction in FIG. There is. The screen door 4 includes a frame 41 and a net material 42.
The stile 41 is composed of an upper stile 43, a lower stile 44, a left vertical stile 45 located on the left side in FIG. 1, and a right vertical stile 46 located on the right side in FIG. ing. Then, by assembling the stile members 43 to 46 into a stile, the stile 41 is formed with an opening Op1 that communicates indoors and outdoors. Then, the net material 42 is attached to the frame 5 so as to cover the opening Op1.
Here, the left vertical stile 45 and the right vertical stile 46 correspond to the vertical stile according to the present invention.
Each of these frame members 43 to 46 is an extruded profile made of synthetic resin or a metal such as aluminum, and has a substantially uniform cross-sectional shape over the entire length.

FIG. 2 is a view of the right vertical stile 46 as viewed from below.
Of the stile members 43 to 46, the right vertical stile 46 includes a base portion 461 and a pair of fin portions 462.
The base portion 461 has a square tubular shape extending along the longitudinal direction of the right vertical frame 46.
In the base portion 461, the outer prospective wall portion 463 forming the prospective surface on the left side when viewed from the indoor side is notched from the lower end upward, and a first notched portion 464 communicating with the inside and outside of the base portion 461 is formed. Has been done.
Further, in the base portion 461, the inner prospective wall portion 465 forming the prospective surface on the right side when viewed from the indoor side is cut out at a position facing the first notch portion 464 from the lower end to the upper side, and the base portion 461 A second notch 466 is formed which communicates with the inside and outside of the.
The pair of fin portions 462 are portions of the outer prospective wall portion 463 extending from the indoor side and the outdoor outer end to the left side when viewed from the indoor side.
The left vertical stile 45 has a shape that is symmetrical with respect to the right vertical stile 46 in FIG.

Further, among the stile members 43 to 46, the lower stile 44 includes a base portion 441 and a pair of fin portions 442 (see FIGS. 10A and 10B).
The base portion 441 has a flat plate shape extending along the longitudinal direction of the lower stile 44.
The pair of fin portions 442 are portions of the base portion 441 extending downward from the indoor side and outdoor outer ends, respectively.
Each tip portion of the pair of fin portions 442 is formed with a stile-side ridge portion 443 that bulges toward the other fin portion 442.

In the screen door 4 described above, the first door roller device 5A is provided at the joint portion between the right vertical stile 46 and the lower stile 44. Further, a second door roller device 5B is provided at the joint portion between the left vertical stile 45 and the lower stile 44. The first and second door roller devices 5A and 5B correspond to the door roller devices according to the present invention.
Here, the second door roller device 5B has the same configuration as the first door roller device 5A, and has a symmetrical shape in FIG. 1 with respect to the first door roller device 5A. Therefore, in the following, only the configuration of the first door roller device 5A will be described, and the description of the configuration of the second door roller device 5B will be omitted.

[Structure of the first door roller device]
FIG. 3 is a perspective view of the joint portion of the right vertical stile 46 and the lower stile 44 as viewed from the indoor side. FIG. 4 is an exploded perspective view of the first door roller device 5A.
The "inside" described below is the inside between the left and right vertical frames 45 and 46, and in the case of the first door roller device 5A, it means the right side when viewed from the indoor side (second door roller device). In the case of 5B, the left side when viewed from the indoor side). Further, the "outside" described below means the side where the left and right vertical frames 45 and 46 are separated, and in the case of the first door roller device 5A, the left side when viewed from the indoor side (second door roller). In the case of device 5B, it is on the right side when viewed from the indoor side).
A part of the first door roller device 5A is positioned inside the lower stile 44 in a state of being inserted into the first and second notches 464 and 466 formed in the right vertical stile 46. Then, the first door roller device 5A supports the screen door 4 so as to be movable along the rail 221 formed on the lower frame 22. The first door roller device 5A includes a fixing member 6, a movable member 7, and wheels 8.

[Structure of fixing member]
The fixing member 6 is used to fix the first door roller device 5A to the right vertical frame 46, and is also used to set the movable member 7 to the operation restricting state or the operation allowable state described later. The fixing member 6 includes a first fixing member 6A and a second fixing member 6B.
The first fixing member 6A includes a damper portion 61 and an insertion portion 62.
FIG. 5 is a view of the first door roller device 5A viewed from the left side in FIG. 3, showing the damper portion 61.
The damper portion 61 has a substantially flat plate shape in which a fixed portion 611 and an extending portion 612 are connected vertically and extend in the vertical direction, and one plate surface is an outer prospecting surface (outer prospecting wall) in the base portion 461. It is fixed to the outer prospective wall portion 463 in a state of being in contact with the portion 463).

The fixing portion 611 is a lower portion of the damper portion 61.
The fixing portion 611 is formed with fixing holes 613, first and second insertion holes 614, 615, and insertion grooves 616 that penetrate the front and back surfaces in this order from the upper side.
The fixing hole 613 is a portion through which the screw Sc1 is inserted. Then, the first fixing member 6A (first door roller device 5A) is fixed to the right vertical stile 46 by screwing the screw Sc1 into the outer prospective wall portion 463 through the fixing hole 613.
The first and second insertion holes 614 and 615 are portions in the second fixing member 6B through which the first and second connecting portions 64 and 65, which will be described later, are inserted, respectively.
The insertion groove 616 is a portion formed at the lower end of the fixing portion 611 and opened downward to insert the rail 221.
In the insertion groove 616, a protruding portion 618 protruding toward the outdoor side is formed at the lower end of the side wall 617 on the indoor side.

The extending portion 612 is an upper portion of the damper portion 61, and extends upward from the fixed portion 611.
In the extending portion 612, a contact portion 619 that bulges outward and extends upward is provided at the tip portion.
Further, in the extending portion 612, a slope 620 is formed on the upper end portion of the surface facing the outer prospective wall portion 463 so that the thickness dimension decreases toward the upper side.
The extending portion 612 has the following impact mitigation function.
FIG. 6 is a view of the joint portion of the right vertical stile 46 and the lower stile 44 as viewed from the indoor side, and is a diagram showing the impact mitigation function of the extending portion 612.
The contact portion 619 comes into contact with the right vertical frame 24 when the screen door 4 is moved to a predetermined position with respect to the right vertical frame 24.
Here, a predetermined gap is provided between the contact portion 619 and the outer prospective wall portion 463. Further, the slope 620 provides a predetermined gap between the upper end portion of the extending portion 612 and the outer prospective wall portion 463.
Therefore, the extending portion 612 is elastically deformed in a bow shape that is convex toward the right vertical frame 24 side with the lower edge of the slope 620 as a fulcrum (two-dot chain line in FIG. 6), and is brought into contact with the screen door 4 by an external force that moves it. It absorbs the pressing force acting on the part 619.

The insertion portion 62 is located inside the fixing portion 611 and has a substantially rectangular parallelepiped shape. Then, the insertion portion 62 is positioned inside the base portion 461 via the first notch portion 464 formed in the outer prospective wall portion 463 in a state where the first fixing member 6A is fixed to the right vertical frame 46.
In the insertion portion 62, at positions facing the first and second insertion holes 614 and 615, the first and second connecting portions described later in the second fixing member 6B penetrate from the inner end face to the outer end face. A third insertion hole 621 through which 64 and 65 are inserted is formed.
Further, in the insertion portion 62, communication holes 622 that communicate with the third insertion hole 621 and the outside of the insertion portion 62 are formed on the side walls on the indoor side and the outdoor side, respectively. The communication hole 622 extends inward from the outer end face of the insertion portion 62.
Further, in the insertion portion 62, a hook-shaped first locking portion 623 is formed at the upper end portion so as to extend inward and the tip portion protrudes downward.
The first locking portion 623 has a state switching function for switching the movable member 7 to an operation restricting state or an operation permitting state, which will be described later. The state switching function will be described later.

The second fixing member 6B is connected to the first fixing member 6A, and is used together with the first fixing member 6A (first locking portion 623) to set the movable member 7 to the operation restricting state or the operation allowable state described later. It is a member to be used. The second fixing member 6B includes an outer frame 63 and first and second connecting portions 64 and 65.
The outer frame 63 includes a pair of facing wall portions 631 and first and second connecting portions 632 and 633.
The pair of facing wall portions 631 are each composed of a plate body having a substantially right-angled triangular shape in a plan view. Then, in the pair of facing wall portions 631, of the edge portions corresponding to the two edges sandwiching the vertices of the right triangle, one edge portion faces substantially in the vertical direction and the other edge portion becomes one edge portion. On the other hand, they are positioned upward and face each other in a substantially horizontal direction with a predetermined interval along the prospective direction.
Each of the pair of facing wall portions 631 is formed with a bearing circular hole 634 that penetrates the front and back surfaces and into which a pair of cylindrical shaft portions 711 described later in the movable member 7 are fitted.
Further, in the pair of facing wall portions 631, first and second locking groove portions 635 and 636 to which the first locking portion 623 is locked are formed on the other edge portion, respectively.
The first locking groove portion 635 is a groove having a substantially V shape when viewed along a prospective direction.
The second locking groove portion 636 is a groove located outside the first locking groove portion 635 and having a substantially V-shape when viewed along the prospective direction.
The first and second locking groove portions 635 and 636 have a state switching function together with the first locking portion 623. The state switching function will be described later.

The first connecting portion 632 is a portion that is bridged between one edge portion of the pair of facing wall portions 631 and connects the one edge portion to each other.
The second connection portion 633 is a portion that is bridged between the portions of the other edge portion of the pair of facing wall portions 631 except for the first and second locking groove portions 635 and 636, and connects the other edge portions. is there. That is, the portion where the first and second locking groove portions 635 and 636 are formed between the other edge portions becomes a communication hole 637 that communicates with the inside and outside of the outer frame 63.

The first connecting portion 64 is a portion extending outward from the first connecting portion 632. Then, the first connecting portion 64 is inserted into the first and third insertion holes 614 and 621 with the second fixing member 6B attached to the first fixing member 6A, and is outside the damper portion 61. Protruding into. The first connecting portion 64 has a tubular shape through which a screw Sc2 is inserted. Further, the first connecting portion 632 is formed with a communication hole (not shown) that penetrates the front and back surfaces and communicates with the inside of the first connecting portion 64. Then, the tip portion of the screw Sc2 protrudes inside the outer frame 63 through the communication hole, and the screw Sc2 moves back and forth inside the first connecting portion 64 by being rotated around the central axis of the screw Sc2. To do. Due to the advancing / retreating movement, the protruding dimension of the screw Sc2 into the outer frame 63 changes.
The screw Sc2 and the first connecting portion 64 have a height adjusting function for adjusting the height of the screen door 4. The height adjustment function will be described later.

The second connecting portion 65 is a portion located below the first connecting portion 64 and extending outward from the first connecting portion 632. Then, the second connecting portion 65 is inserted into the second and third insertion holes 615 and 621 with the second fixing member 6B attached to the first fixing member 6A, and is outside the damper portion 61. Protruding into. The second connecting portion 65 has a substantially flat plate shape in which each plate surface faces in the vertical direction.
In the second connecting portion 65, a second locking portion 651 that locks to the edge portion of the communication hole 622 is formed at the side ends on the indoor side and the outdoor side.
The second connecting portion 65 has a state switching function together with the first locking portion 623 and the first and second locking groove portions 635 and 636. The state switching function will be described later.

[Structure of movable members]
FIG. 7A is a view of the movable member 7 as viewed from the outdoor side. FIG. 7B is a cross-sectional view taken along the line BB of FIG. 7A.
The movable member 7 is a member that pivotally supports the wheel 8 and swings up and down with respect to the fixing member 6. The movable member 7 has a shaft support portion 71 and an overhanging portion 72 connected to the left and right when viewed from the indoor side, and has a substantially flat plate shape extending in the left and right direction, and each plate surface has an indoor side and an outdoor side. It is attached to the fixing member 6 in a facing posture.
The shaft support portion 71 is an outer portion of the movable member 7.
In the shaft support portion 71, a cylindrical shaft portion 711 projecting along the prospective direction is formed on the outside of each plate surface on the indoor side and the outdoor side. The pair of cylindrical shaft portions 711 are fitted into the pair of bearing circular holes 634 by inserting the shaft support portion 71 between the pair of facing wall portions 631. Then, the movable member 7 is pivotally supported with respect to the second fixing member 6B so as to be swingable up and down about the first axis Ax1, which is the central axis of the pair of cylindrical shaft portions 711. That is, the first axis Ax1 corresponds to the swing axis according to the present invention. When the movable member 7 swings up and down about the first axis Ax1, the inner portion 712 of the upper side end portion of the shaft support portion 71 protrudes inside and outside the outer frame 63 via the communication hole 637. To do.

Further, on the outdoor plate surface of the shaft support portion 71, a recess 713 for a spring for installing the torsion coil spring 73 is formed around the cylindrical shaft portion 711.
Here, the torsion coil spring 73 includes a coil portion 731 wound spirally and arm portions 732 and 733 extending linearly from both ends of the coil portion 731, respectively.
Further, the spring recess 713 includes the first and second recesses 714 and 715.
The first recess 714 is formed so as to surround the cylindrical shaft portion 711, and is a portion where the coil portion 731 is installed in a state where the cylindrical shaft portion 711 is inserted into the coil portion 731. Further, in the first recess 714, the outer side wall is omitted. Therefore, when the coil portion 731 is installed in the first recess 714, one of the arm portions 732 and 733 of the pair of arm portions 732 is in a state of projecting to the outside of the spring recess 713.
The second recess 715 communicates with the first recess 714 and extends linearly, and is a portion of the pair of arm portions 732 and 733 where the other arm portion 733 is installed. That is, the rotation of the torsion coil spring 73 around the first axis Ax1 is regulated by the second recess 715.
Then, in the torsion coil spring 73, the other arm portion 733 is installed in the second recess 715, and the one arm portion 732 comes into contact with the inner surface of the first connecting portion 632, and the urging force thereof centers the first axis Ax1. The movable member 7 is urged so as to swing downward. When the movable member 7 swings upward around the first shaft Ax1 against the urging force of the torsion coil spring 73, the second connection portion 633 comes into contact with the shaft support portion 71 to reach a predetermined position or higher. The movable member 7 is restricted from swinging upward.

Further, in the shaft support portion 71, a recess 716 for a door roller is formed inside the plate surface on the indoor side so as to be recessed along the prospective direction and for installing the wheel 8.
Here, the wheel 8 has a disk shape and is a member that rolls on the rail 221.
In the door roller recess 716, a circular hole 717 through which the mounting pin Pi is inserted is formed in the bottom portion. Further, in the door roller recess 716, the lower side wall is omitted. Then, the wheel 8 is attached to the door roller recess 716 by the mounting pin Pi and the washer Wa with the lower portion exposed to the outside of the door roller recess 716, and is centered on the second axis Ax2 which is the central axis of the circular hole 717. It is rotatably supported as a shaft. That is, the second axis Ax2 corresponds to the rotation axis according to the present invention.

As described above, by allowing the movable member 7 to swing up and down around the first axis Ax1, even when the screen door 4 is lifted, the movable member 7 swings downward and the rail. It is possible to prevent the wheel 8 from coming off from 221. That is, the movable member 7 has a derailment prevention function for preventing the derailment of the wheel 8 from the rail 221.

The overhanging portion 72 is an inner portion of the movable member 7, and overhangs from the shaft support portion 71 inward (the side separated from the first shaft Ax1 with the second shaft Ax2 interposed therebetween). Further, the overhanging portion 72 has a shape that tapers toward the inside when viewed along the prospective direction.
In the overhanging portion 72, an inclined surface 721 inclined outward to the outside is formed on the plate surface on the indoor side. That is, the inclined surface 721 has a smaller thickness dimension of the overhanging portion 72 along the prospective direction toward the upward direction, and corresponds to the tapered portion according to the present invention.
The overhanging portion 72 has a detachment prevention function for preventing the screen door 4 from being detached from the rail 221. The disengagement prevention function will be described later.

[Explanation of state switching function]
Next, a state switching function for setting the movable member 7 to the operation restricting state or the operation allowable state will be described. Here, the "operation restricted state" is a state in which the derailment prevention function of the movable member 7 is regulated (a state in which the movable member 7 cannot swing up and down with respect to the fixed member 6). Further, the "operation allowable state" is a state in which the derailment prevention function of the movable member 7 is permitted (a state in which the movable member 7 can swing up and down with respect to the fixed member 6).
FIG. 8A is a view of the first door roller device 5A in the operation restricted state as viewed from the outdoor side. FIG. 8B is a view of the first door roller device 5A in the operation allowable state as viewed from the outdoor side.
First, the "operation restricted state" will be described with reference to FIG. 8A.
When the first and second connecting portions 64 and 65 are inserted into the first to third insertion holes 614, 615 and 621 until the first connecting portion 632 abuts on the inner end surface of the insertion portion 62, the first locking is performed. The portion 623 is locked to the first locking groove portion 635. Then, the first door roller device 5A is set to the "operation restricted state". In this "operation restricted state", the first locking portion 623 comes into contact with the portion 712 in the shaft support portion 71 via the communication hole 637. That is, the portion 712 cannot project to the outside of the outer frame 63 through the communication hole 637, and the movable member 7 swings downward about the first axis Ax1 by the first locking portion 623. It is regulated. Further, the shaft support portion 71 comes into contact with the second connecting portion 633. That is, the movable member 7 is restricted from swinging upward about the first axis Ax1.

Next, the “operation allowable state” will be described with reference to FIG. 8B.
When the screen door 4 is moved to a predetermined position with respect to the right vertical frame 24 when the first door roller device 5A is set to the "operation restricted state", the tip of the second connecting portion 65 hits the right vertical frame 24. Get in touch. Then, due to an external force that moves the screen door 4, the second connecting portion 65 (second fixing member 6B) is attached to the first fixing member 6A until the second locking portion 651 is locked to the edge portion of the communication hole 622. On the other hand, it moves inward. Further, the first locking portion 623 is locked in the second locking groove portion 636. Then, the first door roller device 5A is set to the "operation allowable state". In this "operable state", the first locking portion 623 does not come into contact with the portion 712 in the shaft support portion 71 via the communication hole 637. That is, the portion 712 can protrude to the outside of the outer frame 63 through the communication hole 637, and the movable member 7 can swing downward about the first axis Ax1.

[Explanation of detachment prevention function]
Next, a detachment prevention function for preventing the screen door 4 from coming off from the rail 221 will be described. In addition, a height adjustment function for adjusting the height of the screen door 4 will also be described.
FIG. 9A is a diagram showing an initial state of the first door roller device 5A. FIG. 9B is a diagram showing a state in which the height of the screen door 4 is adjusted from the initial state. FIG. 9C is a diagram showing a state in which the screen door 4 is lifted. 9A to 9C show the joint portion of the right vertical stile 46 and the lower stile 44 from the indoor side. Further, in FIGS. 9A to 9C, for convenience of explanation, the overhanging portion 72 is shaded in a region overlapping the rail 221 when viewed along the prospective direction.

First, the "initial state" will be described with reference to FIG. 9A.
Here, the "initial state" means that in the above-mentioned "operation allowable state", the screw Sc2 is moved inward by rotating the screw Sc2 about the central axis of the screw Sc2, and the tip portion of the screw Sc2 is the outer frame 63. This is the state at the time of contacting the outer side end portion 718 of the shaft support portion 71 located inside, or before the contact.
In this "initial state", when the wheel 8 comes into contact with the rail 221, the movable member 7 is restricted from swinging downward about the first axis Ax1. The upper edge of the overhanging portion 72 is in a substantially horizontal posture. Further, the lower edge portion of the overhanging portion 72 is in an upwardly inclined posture toward the inward side. The region Ar1 of the overhanging portion 72 that overlaps the rail 221 when viewed along the prospective direction is relatively small.

Next, the "state in which the height of the screen door 4 is adjusted" (about the height adjustment function) will be described with reference to FIG. 9B.
From the above-mentioned "initial state", the screw Sc2 is moved inward by rotating the central axis of the screw Sc2, and the tip portion of the screw Sc2 presses the outer side end portion 718 of the shaft support portion 71. By the pressing, the movable member 7 forcibly swings downward about the first axis Ax1. Here, the wheel 8 is in contact with the rail 221. Therefore, as the movable member 7 swings downward about the first axis Ax1, the fixing member 6 side, that is, the right vertical frame 46 side moves upward. As a result, the height of the screen door 4 is adjusted.
In this "state in which the height of the screen door 4 is adjusted", the lower edge portion of the overhanging portion 72 approaches a substantially horizontal posture. Then, in the overhanging portion 72, the region Ar2 overlapping the rail 221 when viewed along the prospective direction is larger than the region Ar1 in the above-mentioned “initial state”.

Next, the "state in which the screen door 4 is lifted" will be described with reference to FIG. 9C.
When the screen door 4 is lifted from the above-mentioned "initial state" or "state in which the height of the screen door 4 is adjusted", the movable member 7 maintains the state in which the wheel 8 is in contact with the rail 221 and the first axis Ax1. Swings downward around. When the screen door 4 is further lifted, the wheel 8 is positioned above the rail 221 without contacting the rail 221 but the movable member 7 continues to swing downward about the first axis Ax1. .. Then, the overhanging portion 72 comes into contact with the lower frame 22 due to the downward swing of the movable member 7.
In this "state in which the screen door 4 is lifted", the region Ar3 overlapping the rail 221 when viewed along the prospective direction in the overhanging portion 72 is in the above-mentioned "state in which the height of the screen door 4 is adjusted". It becomes larger than the region Ar2 of.
As described above, as the movable member 7 swings downward about the first axis Ax1, the region of the overhanging portion 72 that overlaps the rail 221 when viewed in the expected direction increases. That is, the overhanging portion 72 has a detachment prevention function of preventing the screen door 4 from coming off from the rail 221 by being caught on the rail 221.

Next, the function of preventing the overhanging portion 72 from coming off when the screen door 4 is lifted while applying a load to the outdoor side of the screen door 4 from the above-mentioned "initial state" will be described.
FIG. 10A is a schematic view of the positional relationship between the lower stile 44, the wheels 8, the overhanging portion 72, and the rail 221 in the initial state as viewed from the direction along the rail 221. FIG. 10B is a schematic view of the positional relationship between the lower stile 44, the first fixing member 6A, and the rail 221 in the initial state as viewed from the direction along the rail 221. 11A to 13A show the lower stile 44, the wheels 8, the overhanging portion 72, and the rail when the screen door 4 is lifted while applying a load to the outdoor side of the screen door 4 from the initial state shown in FIG. 10A. It is a schematic diagram which looked at the change of the positional relationship of 221 from the direction along the rail 221. 11B to 13B are views corresponding to FIGS. 11A to 13A, respectively, and changes in the positional relationship with the lower stile 44, the first fixing member 6A, and the rail 221 are viewed from the direction along the rail 221. It is a schematic diagram.

In the "initial state", the wheel 8 comes into contact with the rail 221 and the downward swing of the movable member 7 about the first axis Ax1 is restricted (FIG. 10A). Further, the rail 221 is inserted into the insertion groove 616 with a gap between the rail 221 and the protrusion 618 (FIG. 10B).
When the screen door 4 is lifted while applying a load to the outdoor side of the screen door 4 from the initial state shown in FIGS. 10A and 10B, the movable member 7 maintains the state in which the wheel 8 is in contact with the rail 221. At the same time, it swings downward about the first axis Ax1 (FIG. 11A). Further, as the load is applied to the outdoor side of the screen door 4, the rail 221 comes into contact with the tip of the protruding portion 618 (FIG. 11B). On the other hand, the rail 221 does not come into contact with the overhanging portion 72. That is, the tip of the protrusion 618 is closer to the rail 221 than the overhang 72 when viewed along the rail 221. Then, as the screen door 4 is lifted, the rail-side ridge portion 222 is caught by the protruding portion 618 (FIG. 11B).

When the screen door 4 is lifted while further applying a load to the outdoor side of the screen door 4 from the state shown in FIGS. 11A and 11B, the rail-side ridge portion 222 gets over the protruding portion 618 (FIG. 12B). As a result, the overhanging portion 72 is sandwiched between the stile-side ridge portion 443 and the rail-side ridge portion 222 on the indoor side (FIG. 12A). That is, the movable member 7 is restricted from swinging downward about the first axis Ax1 by sandwiching the overhanging portion 72 between the stile-side ridge portion 443 and the rail-side ridge portion 222.
Here, as described above, the overhanging portion 72 is formed with an inclined surface 721 that is inclined to the outdoor side as it goes upward. Therefore, when the screen door 4 is lifted while further applying a load to the outdoor side of the screen door 4 from the state shown in FIGS. 12A and 12B, the overhanging portion 72 becomes a portion where the inclined surface 721 is formed. On the other hand, since a force for compressing in the prospective direction is applied from the stile-side ridge 443 and the rail-side ridge 222, the rail is slid downward (FIG. 13A). That is, the movable member 7 forcibly swings downward about the first axis Ax1.
As described above, even when a harsh test of lifting the screen door 4 while applying a load to the outdoor side of the screen door 4 is performed, the overhanging portion 72 is caught on the rail 221 and the rail 221 is used. It has a detachment prevention function that prevents the screen door 4 from coming off.

In the first door roller device 5A according to the first embodiment described above, the movable member 7 rotatably supports the wheel 8 and is pivotally supported with respect to the fixing member 6 so as to swing up and down. Therefore, even when the screen door 4 is lifted, the movable member 7 swings downward to prevent the wheels 8 from coming off from the rail 221. That is, the movable member 7 has a derailment prevention function.
Further, the movable member 7 includes a shaft support portion 71 and an overhanging portion 72. Therefore, even when the screen door 4 is lifted and a load is applied to the outdoor side of the screen door 4, the overhanging portion 72 is caught on the rail 221 and the screen door 4 is disengaged from the rail 221. Can be prevented. That is, the movable member 7 (overhanging portion 72) has a detachment prevention function.
As described above, in the first door roller device 5A according to the first embodiment, the movable member 7 is provided with both the derailment prevention function and the disengagement prevention function without separately providing the disengagement prevention member as in the conventional case. be able to. Therefore, according to the first door roller device 5A according to the first embodiment, it is possible to simplify the structure while having both the derailment prevention function and the disengagement prevention function.

In particular, the overhanging portion 72 overhangs from the shaft support portion 71 on the side separated from the first axis Ax1 with the second axis Ax2 in between, and the movable member 7 swings downward about the first axis Ax1 in the prospective direction. The area overlapping the rail 221 when viewed along the line 221 increases. Therefore, even when the screen door 4 is greatly lifted and a load is applied to the outdoor side of the screen door 4, the overhanging portion 72 is caught on the rail 221 and the screen door 4 is disengaged from the rail 221. Can be effectively prevented.

Further, in the first door roller device 5A according to the first embodiment, an insertion groove 616 having a protruding portion 618 is provided at the lower end portion of the fixing member 6. Therefore, when a load is applied to the outdoor side of the screen door 4, the rail 221 abuts on the tip of the projecting portion 618 and projects from the lower stile 44 (stile side ridge portion 443). Do not pinch the part 72. That is, the movable member 7 is not restricted from swinging downward about the first axis Ax1, and can sufficiently exert the derailment prevention function and the disengagement prevention function.

Further, in the first door roller device 5A according to the first embodiment, the fixing member 6 includes a fixing portion 611, an extending portion 612, and a contact portion 619. Therefore, the extending portion 612 can move the screen door 4 along the rail 221 to alleviate the impact with the right vertical frame 24 at the time of the operation of bringing the screen door 4 into contact with the right vertical frame 24. it can. Therefore, it is possible to prevent a gap from being formed at the joint portion between the upper stile 43 and the lower stile 44 and the right vertical stile 46. Moreover, the deformation of the right vertical frame 24 can be suppressed.

Further, in the first door roller device 5A according to the first embodiment, the overhanging portion 72 includes an inclined surface 721. Therefore, when a load is applied to the outdoor side of the screen door 4 and the overhanging portion 72 is sandwiched between the rail 221 (rail side ridge portion 222) and the lower stile 44 (frame side ridge portion 443). Is applied with a compressing force in the prospective direction with respect to the portion where the inclined surface 721 is formed, so that the overhanging portion 72 is slid downward. That is, when a load is applied to the outdoor side of the screen door 4, the overhanging portion 72 is sandwiched between the rail 221 (rail side ridge portion 222) and the lower stile 44 (frame side ridge portion 443). However, the movable member 7 is forced to swing downward about the first axis Ax1, so that the derailment prevention function and the disengagement prevention function can be sufficiently exhibited.

(Embodiment 2)
Next, the second embodiment will be described.
In the following description, the same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted or simplified.
FIG. 14 is a perspective view showing the first door roller device 9 according to the second embodiment. FIG. 15 is an exploded perspective view of the first door roller device 9.
In the second embodiment, instead of the first door roller device 5A described in the first embodiment described above, the first door roller device 9 having a structure different from that of the first door roller device 5A is adopted.
In the first door roller device 9, instead of the movable member 7 and the wheel 8 described in the first embodiment described above, the movable member 10 and the wheel 11 are adopted, respectively.

In the shaft support portion 71 constituting the movable member 10, the facing wall portion 719 is added to the movable member 7 described in the above-described first embodiment.
The facing wall portion 719 is a wall portion that faces the bottom portion of the door roller recess 716 at a predetermined interval, and the wheels 11 are placed on the indoor side and the outdoor side with the bottom portion of the door roller recess 716. Support from both sides.
In the facing wall portion 719, a circular hole 710 through which the mounting pin Pi1 is inserted is formed at a position facing the circular hole 717 of the door roller recess 716. Then, the wheel 11 is attached to the door roller recess 716 and the facing wall portion 719 by the mounting pin Pi1 with the lower portion exposed from between the door roller recess 716 and the facing wall portion 719, and the circular holes 717 and 710. It is rotatably supported around the second axis Ax2, which is the central axis.

Further, the overhanging portion 72 constituting the movable member 10 has a tapered shape in which the length dimension from the first axis Ax1 decreases toward the upward direction with respect to the movable member 7 described in the above-described first embodiment. Along with being formed, a convex portion 722 is added.
That is, the overhanging portion 72 according to the second embodiment is above and inside (in FIG. 14, left side, in FIG. 15, right side) with respect to the overhanging portion 72 described in the above-described first embodiment. ) Is omitted, and has an inclined surface 723 that is inclined toward the first axis Ax1 as it goes upward.
The convex portion 722 is a portion of the overhanging portion 72 that protrudes toward the outdoor side from the outer edge (right side in FIG. 14) of the outdoor surface and extends along the vertical direction.

The wheel 11 has a shape in which the collar portion 83 (see FIGS. 16A and 16B) on the indoor side is omitted from the wheel 8 described in the above-described embodiment. That is, the wheels 11 extend radially around the second axis Ax2 and project radially from the rolling surface 81 that rolls on the rail 221 and the outdoor edge of the rolling surface 81, and the rail. A collar portion 82 that overlaps with the 221 in the prospective direction is provided. Further, in the rail 221 according to the second embodiment, the rail-side ridge portion 222 is omitted (see FIGS. 16A, 16B, and 17).
Since the state switching function, the disengagement prevention function, and the height adjustment function are the same as those in the first embodiment described above, the description thereof will be omitted. Further, the second door roller device provided at the joint portion between the left vertical frame 45 and the lower frame 44 may be configured in the same manner as the first door roller device 9.

According to the second embodiment described above, in addition to the same effects as those of the first embodiment described above, the following effects are obtained.
16A, 16B, and 17 are diagrams illustrating the effects of the second embodiment. It should be noted that FIGS. 16A and 16B are configured so that the first door roller device 5A described in the above-described first embodiment can be moved along the rail 221 (the rail-side ridge portion 222 is omitted) according to the second embodiment. The case is shown. Further, FIG. 16A is a diagram corresponding to FIG. 10A. FIG. 16B shows the positions of the lower stile 44, the wheels 8, the overhanging portion 72, and the rail 221 when the screen door 4 is lifted while applying a load to the outdoor side of the screen door 4 from the initial state shown in FIG. 16A. It is a schematic diagram which looked at the change of the relationship from the direction along the rail 221. FIG. 17 is a diagram corresponding to FIG. 10A, in which the first door roller device 9 according to the second embodiment is moved along the rail 221 according to the second embodiment (the rail-side ridge portion 222 is omitted). The case where it is configured to be possible is shown.

When the configuration described in the first embodiment described above is adopted as the wheel 8 (FIGS. 16A and 16B), there are the following advantages and problems.
The advantages are as follows.
A recess is formed by the rolling surface 81 and the pair of collars 82 and 83, and the tip of the rail 221 enters the recess, so that the pair of collars 82 and 83 function as guides (FIG. 16A). Therefore, the wheel 8 has an advantage that it can smoothly roll on the rail 221 without rattling.
On the other hand, the problems are as follows.
When a load is applied to the outdoor side while the screen door 4 is being lifted, the collar portion 83 on the indoor side of the wheel 8 rides on the rail 221 (FIG. 16B). That is, since the wheel 8 and the movable member 7 are integrated, when the flange portion 83 on the indoor side of the wheel 8 rides on the rail 221 as described above, the movable member 7 moves upward as the wheel 8 moves. Also swings upward. Therefore, there is a problem that the area of the overhanging portion 72 that overlaps with the rail 221 is reduced, and the disengagement prevention function cannot be sufficiently exerted.
Here, when the rail 221 is provided with the rail-side ridge 222, when the screen door 4 is lifted and a load is applied to the outdoor side, the protrusion 618 gets over the rail-side ridge 222. The screen door 4 (first door roller device 5A) will temporarily move to the indoor side. That is, when the screen door 4 is moved to the indoor side, the movable member 7 swings downward, so that the above-mentioned problems are unlikely to occur. That is, the above-mentioned problem is likely to occur when the rail 221 is not provided with the rail-side ridge portion 222.

In the first door roller device 9 according to the second embodiment, the wheel 11 is provided with a flange portion 82 only on the outdoor edge portion of the rolling surface 81.
Therefore, the rail 221 can be sandwiched between the single flange portion 82 and the overhanging portion 72, and the single flange portion 82 and the overhanging portion 72 function as guides (FIG. 17). Therefore, the wheel 11 can smoothly roll on the rail 221 without rattling.
Further, even when the screen door 4 is lifted and a load is applied to the outdoor side, since the flange portion 83 on the indoor side is omitted, the wheel 11 may ride on the rail 221 at the flange portion 83. Absent. That is, since the wheel 11 does not move upward, the movable member 10 also does not swing upward. Therefore, a region of the overhanging portion 72 that overlaps the rail 221 can be sufficiently secured, and the detachment prevention function can be sufficiently exerted.

In the first door roller device 9 according to the second embodiment, the overhanging portion 72 is provided with a convex portion 722. Therefore, in the overhanging portion 72, the contact area in contact with the rail 221 can be set to the minimum necessary area, and the sliding resistance with respect to the rail 221 can be reduced. Therefore, the screen door 4 can be moved and the movable member 10 can be swung smoothly.

In the first door roller device 9 according to the second embodiment, the movable member 10 (overhanging portion 72) is formed in a tapered shape in which the length dimension from the first axis Ax1 decreases toward the upper side. Therefore, in the movable member 10 (overhanging portion 72), the upper and inner corner portions are omitted, and the movable member 10 slides with respect to the lower stile 44 (stile side ridge portion 443) when the movable member 10 swings. Resistance can be reduced. Therefore, the movable member 10 can be smoothly swung.

(Other embodiments)
Although the embodiments for carrying out the present invention have been described so far, the present invention should not be limited only to the above-described first and second embodiments.
In the above-described first and second embodiments, the door roller device according to the present invention is provided in the screen door, but the present invention is not limited to this, and other obstacles such as the inner shoji 3 and the outer shoji may be provided.
In the above-described first and second embodiments, the shape of the overhanging portion 72 is not limited to the shape described in the above-described first and second embodiments. That is, if the movable members 7 and 10 have a shape in which the area overlapping the rail 221 increases as the movable members 7 and 10 swing downward with respect to the first axis Ax1 when viewed along the expected direction, the overhanging portion 72 The shape may be configured by another shape.
In the above-described first and second embodiments, the inclined surface 721 is adopted as the tapered portion according to the present invention, but the present invention is not limited to this, and if the thickness dimension along the expected direction becomes smaller toward the upper side, the tension is stretched. An inclined surface may be formed on the outdoor surface of the protruding portion 72.

1 Joinery, 2 Frames, 4 Screen doors (shoji), 5A, 9 1st door roller device (door wheel device), 5B 2nd door roller device (door wheel device), 6 Fixing members, 7, 10 movable members, 8, 11 wheels, 23 Left vertical frame (vertical frame), 24 Right vertical frame (vertical frame), 41 frame, 42 screen material, 45 left vertical frame (vertical frame), 46 right vertical frame (vertical frame), 71 axis branch, 72 tension Protruding part, 81 rolling surface, 82 flange part, 221 rail, 611 fixing part, 612 extending part, 616 insertion groove, 617 side wall, 618 protruding part, 619 contact part, 721 inclined surface (tapered part), 722 convex Ax1 1st axis (swing axis), Ax2 2nd axis (rotational axis), Op1 opening

Claims (8)

A door roller device that supports shoji so that it can move along the rails of the frame.
The fixing member fixed to the shoji and
A movable member that is pivotally supported so as to swing up and down with respect to the fixing member about the first axis.
A wheel that is rotatably supported by the movable member about a second axis and rolls on the rail is provided.
The movable member is
It is provided with an overhanging portion in which the area overlapping the rail increases as the movable member swings downward .
The overhanging part
A door roller device, characterized in that the entire overhanging portion is arranged on a side separated from the first axis with respect to the second axis. At the lower end of the fixing member
An insertion groove is provided that opens downward and into which the rail is inserted.
On the side wall forming the insertion groove,
A protrusion that protrudes toward the rail is provided.
The tip of the protrusion
The door roller device according to claim 1, wherein the rail is closer to the rail than the overhanging portion. The fixing member is
A fixed part fixed to the vertical frame of the shoji and
An extending portion extending upward from the fixed portion and an extending portion
An abutting portion that bulges from the tip end portion of the extending portion toward the vertical frame side of the frame body and extends upward, and comes into contact with the vertical frame when the shoji is moved along the rail. Prepare,
The extending part is
The door roller according to claim 1 or 2, wherein the door roller is elastically deformable in a bow shape that is convex toward the vertical frame side in response to a pressing force acting on the contact portion from the vertical frame. apparatus. The overhanging part
The door roller device according to any one of claims 1 to 3, further comprising a tapered portion in which the thickness dimension along the prospective direction decreases toward the upper side. The wheels
A rolling surface that extends in an annular shape around the second axis and rolls on the rail.
A flange portion that protrudes from the rolling surface and overlaps the rail is provided.
The collar is
The invention according to any one of claims 1 to 4, wherein the rolling surface is provided only on one end side of the rolling surface in the direction along the second axis , which is separated from the overhanging portion. Door wheel device. In the area of the overhanging portion that overlaps the rail,
The door roller device according to claim 5, wherein a convex portion projecting toward the rail is provided. The movable member is
The door roller device according to any one of claims 1 to 6, wherein the movable member is formed in a tapered shape in which the length dimension from the swing axis decreases toward the upper side. A screen door provided with a frame having an opening that communicates indoors and outdoors and a net material that covers the opening.
The screen door according to any one of claims 1 to 7, which is attached to the frame and supports the screen door so as to be movable along the rail of the frame body.

Images