JP2019100102A - Door roller - Google Patents

Abstract

To provide a door roller whose size in the height direction is suppressed and whose miniaturization is achieved.SOLUTION: A door roller 5 includes: an outer case 51; an intermediate case 52 supported by the outer case 51 for movement in a first direction with respect to the outer case 51; and an inner case 53 supported by the outer case 51 for movement in a second direction intersecting with the movement direction of the intermediate case 52 with respect to the intermediate case and supporting a wheel 54. The intermediate case 52 is formed with an inclined groove 523 inclined with respect to the direction of movement of the outer case, the outer case 51 is formed with a vertical groove 511 extending in the vertical direction, the inner case 53 is formed with a shaft member through-hole through which the shaft member 6 passes, and the shaft member 6 is engaged with the inclined groove 523 and the vertical groove 511.SELECTED DRAWING: Figure 6

Description

  TECHNICAL FIELD The present invention relates to a door roller provided at a lower door of a sliding door.

  2. Description of the Related Art Conventionally, a door wheel is provided at the lower edge of a shoji constituting a sliding door. The door wheel includes a case and a wheel rotatably supported by the case (see, for example, Patent Document 1). In such a sliding door, for example, the inner case supporting the wheel is rotated by rotating a bolt so that the wheel protrudes downward and position adjustment of the wheel in the height direction of the door wheel is possible. It is possible.

JP, 2014-066104, A

  However, in the conventional door wheel described above, when adjusting the position of the wheel in the height direction of the door wheel, the inner case and the outer case supporting the inner case are rotated with the rotation of the inner case supporting the wheel. Since the load is applied to the wheels, the inner case supports the load. Therefore, it is necessary to increase the plate thickness of the inner case and the outer case in order to be able to withstand the weight of a heavy load, and it is also necessary to increase the load bearing strength of the wheel itself. For this reason, the diameter of a wheel becomes large and as a result, a door wheel itself becomes large.

  An object of the present invention is to provide a door wheel having a reduced size in the height direction and a reduced size.

  In order to achieve the above object, the present invention provides an outer case (for example, an outer case 51 described later) and a middle case (for example, described later) supported by the outer case movably in a first direction with respect to the outer case. The middle case 52) is supported by the outer case movably in a second direction (for example, the vertical direction described later) intersecting the moving direction of the middle case with respect to the middle case, and a wheel (for example, a wheel described later 54) an inner case (for example, an inner case 53 described later) supporting the inner case, and the middle case is an inclined groove (for example, an inclined through groove 523 described below) inclined with respect to the moving direction of the outer case Is formed in the outer case, and a longitudinally extending longitudinal groove (e.g., an outer central through hole 511 described later) is formed, and an axial member (e.g. an axial member 6 described below) passes through the inner case. Do Member through-hole (e.g., the inner central opening 531 to be described later) is formed, the shaft member, the inclined grooves and door rollers engaging said longitudinal grooves (e.g., door rollers 5 below) provides.

  The present invention also includes a box-shaped outer case having at least one opening, a middle case housed in the outer case, in which inclined grooves are formed in a pair of support walls, and a wheel exposed from the opening of the outer case. An inner case for supporting the inner case, the inner case being against the outer case along the inclined grooves of the middle case in a state where the middle case is in contact with the end opposite to the opening of the outer case; To provide a sliding door.

  Further, the inner case extends in the vertical direction, and forms a pair of side walls forming a support hole for supporting the wheel, and a bent portion formed in the side wall and bent inward into a substantially U shape in a cross sectional view Preferably,.

  A substantially parallelogram including a pair of flat surfaces along the side wall of the inclined groove and a pair of flat surfaces along the side wall of the upper and lower grooves formed in the outer case and extending in the short direction of the case on the inner case Preferably, the shaft portion of

  In addition, the inner case supports a plurality of wheels, and the inner case is supported by the outer case so as to be pivotable relative to the outer case inside the outer case via the shaft member. Is preferred.

  Further, the shaft member is a groove engaging portion (for example, a circumferential linear portion 62 described later) engaged with the inclined groove and the longitudinal groove at both end portions of the shaft member, and the groove engaging portion It is preferable that an intermediate portion (for example, a central portion 61 described later) between them be in contact with a portion of the middle case that constitutes the inclined groove.

  According to the present invention, it is an object of the present invention to provide a door wheel whose size in the height direction is suppressed and whose size is reduced.

It is a front view showing a state in which a sliding door of a sliding door according to an embodiment of the present invention is closed. It is a front view which shows the state by which the shoji of the sliding door which concerns on one Embodiment of this invention was open | released. It is a longitudinal cross-sectional view of the sliding door which concerns on the said embodiment. It is a cross-sectional view of the sliding door which concerns on the said embodiment. It is an enlarged longitudinal cross-sectional view of the lower part of the sliding door which concerns on the said embodiment. It is a side view which shows the state which the wheel of the door-wheel of the sliding door which concerns on the said embodiment is located in the uppermost side. It is a side view which shows the state which the wheel of the door-wheel of the sliding door which concerns on the said embodiment is located in the lowest side. It is sectional drawing which shows a mode that the axle shaft of the wheel of the door-wheel of the sliding door which concerns on the said embodiment has a horizontal parallel positional relationship. It is sectional drawing which shows a mode that the axle shaft of the wheel of the door wheel of the sliding door which concerns on the said embodiment inclines. It is a side view which shows the outer side case of the door-wheel of the sliding door which concerns on the said embodiment. It is a side view showing a middle case of a door of a sliding door concerning the above-mentioned embodiment. It is a side view showing an inner case of a door of a sliding door concerning the above-mentioned embodiment. It is a front view showing an inner case of a door of a sliding door according to the embodiment. It is a side view showing a shaft member of a door of a sliding door concerning the above-mentioned embodiment. It is a front view showing an axial member of a door of a sliding door concerning the above-mentioned embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this specification, “finding direction” means the longitudinal direction of the upper and lower frames of the sliding door housed in the opening formed in the building (that is, the in-plane direction of glass or shoji) The “expected direction” means the indoor / outdoor direction (that is, the depth direction). In addition, the center of the vertical frames 23 and 24 in the finding direction (the position at which the front side longitudinal ridges 44 of the two shojis 4 and 4 overlap in the expected direction when the shoji 4 is closed) is defined as "central position". Do.

First, a sliding door 1 according to an embodiment of the present invention will be described. FIG. 1 is a front view showing a state where the sliding door 4 of the sliding door 1 is closed. FIG. 2: is a front view which shows the state by which the shoji 4 of the sliding door 1 was open | released.
The sliding door 1 is a sliding door provided with a frame 2 attached to the opening 10 of a building, and shoji 4 arranged in the frame 2 and slidable in the lateral direction in the drawing.

  The frame 2 has an upper frame 21, a lower frame 22, and left and right vertical frames 23 and 24, and the upper frame 21, the lower frame 22 and the vertical frames 23 and 24 form a rectangular frame Be done.

  The shoji 4 includes a casing 40 (see FIG. 2 and the like) and a glass panel 45 fitted into the interior of the casing 40. The frame body 40 is constructed by assembling an upper frame 41, a lower frame 42, a joint box 43, and a longitudinal side 44 of the door. In addition, a locking device 46 is provided at the door-end-side vertical weir 44, which enables locking and unlocking of the shoji 4 and 4.

As shown in FIG. 3, the upper frame 21 is disposed on the outdoor side, and has an upper frame outdoor side main body 211 which is a hollow structure having a rectangular cross section having a hollow portion, and two wall members each having an open U shape. It is disposed between and connected to the upper frame indoor side main body 212, which is formed by overlapping, and the upper frame outdoor side main body 211 and the upper frame indoor side main body 212 in the expected direction, and one of them is U-shaped. And an upper frame middle body 213 that opens. The upper frame outdoor side main body 211 and the upper frame indoor side main body 212 are connected by a connecting member 215 made of resin, for example.
FIG. 3 is a longitudinal sectional view of the sliding door 1.

  At the lower part of the connected upper frame outdoor side main body 211, the upper frame intermediate main body 213, and the upper frame intermediate main body 213, a glass panel support concave portion 217, one of which is open, is formed. The upper frame middle body 213 is fixed with a recessed ceiling member 2172 having a downwardly extending extension. The upper part of the two glass panels 45 is arrange | positioned in the part of the glass panel support recessed part 217 below the recessed ceiling member 2172. As shown in FIG.

  The wall portion on the outdoor side of the pair of wall portions of the U-shaped upper frame middle main body 213 extending downward is a pair of wall portions of the U-shaped upper frame outdoor side main body 211 extending downward. The upper rail 2171 is connected to the wall portion of the indoor side. The indoor-side wall portion of the pair of wall portions of the U-shaped upper frame middle body 213 extending downward is a pair of wall portions of the U-shaped upper frame indoor side main body 212 extending downward. It is connected to the wall on the outdoor side and constitutes an upper rail 2173.

As shown in FIG. 3 and FIG. 5, the lower frame 22 is disposed on the outdoor side, and has a hollow structure, and the lower frame outdoor side main body 221 is a hollow structure having a substantially rectangular cross section, and one side opens in a U shape. A lower frame indoor side main body 222 configured by double stacking of wall members, and a lower frame outdoor side main body 221 and a lower frame indoor side main body 222 in the expected direction are disposed and connected to one of them And a lower frame intermediate body 223 opening in a U-shape. The lower frame outdoor side main body 221 and the lower frame indoor side main body 222 are connected, for example, by a connecting member 225 made of resin.
FIG. 5 is an enlarged vertical sectional view of the lower part of the sliding door 1.

  At the top of the lower frame outdoor side main body 221, the lower frame middle main body 223, and the lower frame indoor side main body 222 connected, a glass panel support concave portion 227 is formed with one opening. The wall portion on the outdoor side of the pair of wall portions of the U-shaped lower frame middle body 223 extending upward is the one of the pair of wall portions of the U-shaped lower frame outdoor side main body 221 extending upward. The lower rail 2271 is connected to the wall on the indoor side. The indoor-side wall portion of the pair of wall portions of the U-shaped lower frame middle body 223 extending upward is the one of the pair of wall portions of the U-shaped lower frame indoor side main body 222 extending upward. The lower rail 2273 is connected to the wall on the outdoor side.

  As shown in FIG. 4, the vertical frame 23 has a hollow structure with a rectangular cross section having a hollow portion fixed to a vertical frame outdoor side main body 231 formed in a plate shape and an indoor side portion of the vertical frame outdoor side main body 231. A door tip side vertical rod facing member 237 is provided. The indoor side end portion of the vertical frame outdoor side main body 231 and the door tip side vertical rod facing member 237 are fixed to the frame fixed portion 201. An extension 2311 extending inward in the finding direction is provided on the portion of the vertical frame outdoor side main body 231 that is closer to the outside.

  As shown in FIG. 4, the vertical frame 24 includes a vertical frame outdoor side main body 241 formed in a plate shape. The indoor-side end of the vertical frame outdoor side main body 241 is fixed to the frame fixing portion 201. An extension 2411 extending inward in the finding direction is provided on the indoor-side portion of the vertical frame outdoor side main body 241. At the central portion of the vertical frame outdoor side main body 241 in the expected direction, an extension 2412 extending inward in the finding direction is provided.

  As shown in FIG. 3, the upper weir 41 is disposed on the outdoor side and is an hollow structure having a hollow section and is an outdoor side main body 411 disposed on the outdoor side, which is a hollow structure having a rectangular section; And an upper crucible indoor side main body 412 which is a hollow structure having a rectangular cross section having a portion. An upper and lower outdoor extension portion 4111 extending downward is provided at a portion of the outer side of the upper side outdoor side main body 411 on the outdoor side. At the indoor side portion of the upper crucible indoor side main body 412, an upper crucible indoor lower extension 4121 extending downward is provided. The upper rod outdoor side main body 411 and the upper rod indoor side main body 412 are connected and connected. A glass panel insertion recess 417, one of which is open, is formed at the lower part of the connected upper eyelid outdoor side main body 411 and upper eyelid indoor side main body 412. The glass panel insertion recess 417 is provided with a glazing channel 4171 having a U-shaped cross section, one end of which is open. The end of the glass panel 45 is inserted into the opening of the glazing channel 4171.

  The lower rod 42 is disposed on the outdoor side and has a hollow structure with a hollow section, and is a hollow structure having a hollow section. The lower body 42 is disposed on the outdoor side, and the hollow section is provided with a hollow section. And a lower case indoor side main body 422 which is a structure. A lower part outdoor upper side extension 4211 extending upward is provided at the part on the outdoor side of the lower part outdoor side main body 421. A lower pot indoor upper extension 4221 extending upward is provided at a part of the lower pot indoor side main body 422 on the indoor side. The lower pot outdoor side main body 421 and the lower pot indoor side main body 422 are connected and connected. A glass panel insertion recess 427 opening upward is formed at the upper part of the lower outdoor side main body 421 and the lower indoor side main body 422 connected. The glass panel insertion recess 427 is provided with a glazing channel 4271 having a U-shaped cross section that opens upward, and the glazing channel 4271 and the lower outdoor side main body 421 and the lower indoor side main body 422 connected are connected. A setting block 4272 is provided between the two. The lower portion of the glass panel 45 is disposed and fixed to the opening of the glazing channel 4271. The hollow structure portion of the lower rod indoor side main body 422 is formed long on the lower side, and a door 5 is provided at the end of the lower rod 42 and on the outdoor side below the hollow structure portion. ing.

  As shown in FIG. 4, the calling member 43 of the shoji 4 located indoors is a hollow structure disposed at a central position when the shoji 4 is closed and partitioned into a plurality of rectangular chambers of cross section. An inner tub body portion 431 and an indoor side member 432 having an L-shaped cross section that covers the indoor side of the inner bowl body portion 431 and the side of the vertical frame 23 are provided. The inner main unit 431 and the indoor side member 432 are connected and connected. A plate-like outdoor side plate member 433 parallel to the direction of attachment is fixed to the outdoor side portion of the indoor unit body 431 and the indoor side member 432. In addition, the outdoor side plate member 433 is provided with a smoke return 4331 extending toward the vertical frame 24. A glass panel insertion concave portion 437 having one opening is formed on the door tip side of the inner body portion 431. The glass panel insertion recess 437 is provided with a glazing channel 4371 having a U-shaped cross section, one side of which is open, and the opening of the glazing channel 4371 is provided with a portion on the rear end side of the glass panel 45 .

  The door tip side vertical ridge 44 of the shoji 4 located on the indoor side is a door tip indoor side main body 441 that is a hollow structure that is disposed on the indoor side and is divided into a plurality of rectangular chambers having hollow portions; And an outdoor side main body 442, which is a hollow structure having a rectangular cross section and having a hollow portion. At the indoor side portion of the outdoor side main body 442 of the door front door, a door front door indoor door rear side extension portion 4411 extending toward the door rear side is provided. The outdoor side of the door-to-door outdoor side body 442 is provided with a door-to-door outdoor door rear side extending portion 4421 that extends to the door butt side. The door-to-door indoor side main body 441 and the door-to-door outdoor side main body 442 are connected and connected. A glass panel insertion concave portion 447 having one opening is formed in a portion on the door butt side of the connected door tip indoor side main body 441 and the door tip outer side main body 442. The glass panel insertion recess 447 is provided with a glazing channel 4471 having a U-shaped cross section, one of which is open, and the opening of the glazing channel 4471 is provided with a portion on the door tip side of the glass panel 45. A door 5 is disposed below the hollow structure of the outdoor side main body 442 of the door front door.

  As shown in FIG. 4, the calling member 43 of the shoji 4 located on the outdoor side is provided with a calling member main body 431 which is disposed at the central position when the shoji 4 is closed and is a hollow structure having a rectangular cross section. . Further, a smoke return 4341 that extends to the indoor side and bends in an L-shape is provided on the indoor side of the calling member main body 431. The smoke return 4341 engages with the smoke return 4311 of the call 43 of the shoji 4 located on the indoor side when the shoji 4 is closed.

  A glass panel insertion recess 437 opening on the door tip side is formed on the door tip side of the calling party main body 431. The glass panel insertion recess 437 is provided with a glazing channel 4371 having a U-shaped cross section that opens to the door tip side, and the end of the glass panel 45 is disposed at the opening of the glazing channel 4371.

  The door tip side vertical ridge 44 of the shoji 4 located on the outdoor side is a door tip indoor side main body 441 which is a hollow structure divided into a plurality of rectangular chambers with hollow portions disposed on the indoor side, and the outdoor side And an outdoor side main body 442, which is a hollow structure having a rectangular cross section and having a hollow portion. At the indoor side portion of the door front door indoor side main body 441, a door front door indoor door rear side extension portion 4411 extending to the door rear side is provided. The outdoor side of the door-to-door outdoor side body 442 is provided with a door-to-door outdoor door rear side extending portion 4421 that extends to the door butt side. The door-to-door indoor side main body 441 and the door-to-door outdoor side main body 442 are connected and connected. A glass panel insertion concave portion 447 having one opening is formed in a portion on the door butt side of the connected door tip indoor side main body 441 and the door tip outer side main body 442. The glass panel insertion recess 447 is provided with a glazing channel 4471 having a U-shaped cross section, one of which is open, and the opening of the glazing channel 4471 is provided with a portion on the door tip side of the glass panel 45. A door 5 is disposed below the hollow structure of the outdoor side main body 442 of the door front door.

As shown in FIGS. 6 and 7, the door wheel 5 includes an outer case 51, a middle case 52 housed in the outer case 51, and an inner case 53 housed in the middle case 52. As shown in FIG. 10, the outer case 51 is formed in a rectangular parallelepiped shape (box shape (box shape)) whose bottom surface is opened. The wheel 54 described later is exposed from the opening of the open bottom surface. FIG. 6 is a side view showing a state in which the wheel 54 of the door 5 of the sliding door 1 is at the uppermost position. FIG. 7 is a side view showing a state in which the wheel 54 of the door 5 of the sliding door 1 is located at the lowermost side. FIG. 10 is a side view showing the outer case 51 of the door 5 of the sliding door 1.
The outer side of the outer case 51 is a vertical groove extending from a position near the lower end of the outer case 51 to a position near the upper surface at the center of the outer case 51 in the longitudinal direction (left and right direction in FIG. 10). A central through hole 511 is formed. The outer central through hole 511 extends in the vertical direction as the vertical direction with respect to the lateral direction which is the longitudinal direction of the outer case 51, and the width of the lower end portion of the outer central through hole 511 is the longitudinal direction of the outer case 51 (FIG. In the left-right direction). At an upper portion of the outer central through hole 511, there is provided a corner 512 to which two oblique sides are connected, and in the corner 512, a circumferential linear portion 62 of the shaft member 6 described later is engageable. . Further, at the central portion between the outer central through hole 511 and the end of the outer case 51, a rectangular support through hole 513 is formed.

  A through hole 514 penetrating in the longitudinal direction of the outer case 51 is formed at an end in the longitudinal direction of the outer case 51 (end on the left side shown in FIG. 10), and as shown in FIG. A bolt 515 is screwed to the screw. As the bolt 515 is rotated, the bolt 515 is advanced and retracted in the longitudinal direction (left and right direction shown in FIG. 10) of the outer case 51 to move the middle case 52 accommodated inside the outer case 51 in the left and right direction. Is configured.

As shown in FIG. 11, the middle case 52 is formed in a rectangular parallelepiped shape whose upper and lower surfaces are open. FIG. 11 is a side view showing the middle case 52 of the door 5 of the sliding door 1.
Lower through holes 521 are formed on the side surface of the middle case 52 at equal intervals in the longitudinal direction (left and right direction in FIG. 11) of the middle case 52. The lower through holes 521 are each formed in a parallelogram whose apexes are rounded. A lower convex portion 522 is provided between the central lower through hole 521 and the lower through hole 521 at one end of the middle case 52 in the longitudinal direction (the lower through hole 521 on the left side of FIG. 11). The lower convex portion 522 is engaged with the support through hole 513 of the outer case 51 from above. Thus, the middle case 52 is supported by the outer case 51 so as to be movable in the horizontal direction with respect to the outer case 51 and not to be separated from the outer case 51. That is, the middle case 52 is supported movably in the longitudinal direction of the lower rod 42 with respect to the outer case.

  The central lower through hole 521 and the lower through hole 521 at the other end of the middle case 52 in the longitudinal direction (the lower through hole 521 on the right side of FIG. 11) An inclined through groove 523 which is an inclined groove extending obliquely toward the lower through hole 521 is formed. The inclined through groove 523 is inclined downward with respect to the longitudinal direction of the middle case 52, that is, the direction in which the outer case 51 moves relative to the middle case 52, and the upper end of the inclined through groove 523 is It is open to the upper side.

As shown in FIG. 12A, the inner case 53 is formed in a rectangular parallelepiped shape in which a part of the upper surface, the front, the back, and the lower surface are open, and the outer case 51 is movable in the vertical direction with respect to the middle case 52. It is supported. A central portion in the longitudinal direction of the inner case 53 slightly protrudes upward. FIG. 12A is a side view showing the inner case 53 of the door 5 of the sliding door 1.
A circular inner central through hole 531 is formed on the upper side of the central portion of the inner case 53 in the longitudinal direction (left and right direction in FIG. 12A) of the inner case 53.
Further, an inward protrusion 532 is formed on the side surface of the inner case 53. The inward protruding portion 532 extends from the vicinity of the inner central through hole 531 to one end and the other end in the longitudinal direction of the inner case 53, respectively, and as shown in FIG. It is formed by being bent inward to the inside of the inner case 53 in a V-shape. Therefore, the pair of inward projections 532 bends toward the inner side of the inner case 53 along the axle insertion through holes 533 described later, along with bending portions which are separated from each other as they are separated in the vertical direction from the bent apex. Constitute a bending portion. And this bent part is formed in the shape of a straight line along the axle shaft insertion through hole 533 in the cross sectional view shown in FIG. 12B.
FIG. 12B is a front view showing the inner case 53 of the door 5 of the sliding door 1.

An axle insertion through hole 533 is formed in the inward protrusion 532. Four axle shaft insertion through holes 533 are formed at equal intervals in the longitudinal direction of the inner case 53 at the bottom of the V-shaped recess of the inward protrusion 532 and, as shown in FIG. 12A, It consists of long long holes.
Further, four upper openings 534 are formed on the upper surface of the inner case 53. Upper parts of the wheels 54 are disposed in the upper openings 534, respectively, and the four wheels 54 are integrated into one set of four door wheels. Thereby, the height of the door 5 in the vertical direction is suppressed. The diameter of this wheel is about 30 mm, and the doors with four wheels attached are placed at the left and right ends of the lower frame that is the lower part of the shoji 4 to distribute the weight of the large opening shoji near about 200 kg. It is possible to move in the left and right direction while receiving the

  The shaft member 6 is inserted into and penetrates the inner center through hole 531 of the inner case 53. As shown in FIGS. 13A and 13B, the shaft member 6 has a cylindrical central portion 61, and a circumferential linear portion 62 that constitutes both axial ends of the shaft member 6. FIG. 13A is a side view showing the shaft member 6 of the door wheel 5 of the sliding door 1. FIG. 13B is a front view showing the shaft member 6 of the door wheel 5 of the sliding door 1.

  The circumferential linear portion 62 penetrates the inner central through hole 531 of the inner case 53, the inclined through groove 523 of the middle case 52, and the outer central through hole 511 of the outer case 51, thereby the inner case 53. Is slightly swingable with respect to the outer case 51 and the middle case 52. The circumferential surface of the circumferential surface linear portion 62 is a straight line parallel to the side wall of the outer central through hole 511 and the inclined linear portion 621 which is a pair of flat surfaces inclined in parallel following the side wall of the inclined through groove 523 And a vertical linear portion 622 which is a pair of flat surfaces. The inclined linear portion 621 abuts on the side wall of the inclined through groove 523 with inclined surfaces, and the vertical linear portion 622 abuts on the outer central through hole 511 in the surfaces extending in the vertical direction. As shown in FIG. 13A, the portion of the circumferential surface straight portion 62 is smaller than the central portion 61. That is, the end face of the central portion 61 in the axial direction abuts on the portion of the middle case 52 forming the inclined through groove 523. Therefore, the central portion 61 can not pass through the inclined through groove 523 and the outer central through hole 511.

The wheel 54 includes an outer ring portion 541, an axle 542, and a bearing 543, as shown in FIG. The axle 542 passes through the outer ring portion 541. FIG. 8 is a cross-sectional view showing how the axles 542 of the wheels 54 of the door 5 of the sliding door 1 are in a horizontal and parallel positional relationship. FIG. 9 is a cross-sectional view showing a state in which the axle 542 of the wheel 54 of the door wheel 5 of the sliding door 1 according to the embodiment is inclined.
Grooves 5411 engaged with the rails 2212 and 2232 are formed on the circumferential surface of the outer ring portion 541. The outer ring portion 541 is disposed to surround the outer periphery of the axle 542 in a positional relationship coaxial with the axle 542. A bearing 543 is disposed between the outer ring portion 541 and the axle 542, and the outer ring portion 541 is configured to be smoothly rotatable with respect to the axle 542. The three left axles 542 shown in FIG. 6 are inserted into the lower through holes 521 of the middle case 52.

  Next, an operation of the wheel 54 of the door and wheel 5 having the above-described configuration will be described in which the axle 542 inserted into and supported by the axle shaft insertion through hole 533 is inclined. When the lock is opened and the shoji 4 is opened, as shown in FIG. 8, the axle 542 is in a horizontal state. When the shoji 4 is closed and the lock is closed, the shoji 4 on the outdoor side and the shoji 4 on the indoor side are pulled toward each other in the expected direction. As a result, as shown in FIG. 3 and FIG. 9 etc., the wheel 54 is inclined. At this time, the axle 542 is inclined from the horizontal state, and the left end of the axle 542 shown in FIG. 9 is located below the axle insertion through hole 533 (see FIG. 12A) and the right end of the axle 542 is The part is positioned above the axle insertion through hole 533.

  Next, adjustment of the position of the wheel 54 of the door 5 in the vertical direction will be described. First, as shown in FIG. 6, when the wheel 54 is disposed at the uppermost side with respect to the outer case 51, the middle case 52 is located most at the left side in FIG. At this time, the shaft member 6 is at the central position of the inclined through groove 523.

Next, by rotating the bolt 515 of the outer case 51, the right end of the bolt 515 shown in FIG. 6 is moved in the right direction in FIG. At this time, the entire upper end surface 526 of the side surface of the middle case 52 is kept in contact with the inner side of the upper wall 516 constituting the upper surface of the outer case 51. ing. By this movement, the shaft member 6 relatively moves to the lower left side of the inclined through groove 523 along the inclined through groove 523 of the middle case 52 and relative along the outer central through hole 511 of the outer case 51. Move downward. That is, the state in which the upper end surface 526 of the middle case 52 is in surface contact with the upper wall 516 of the outer case 51 is maintained, and the inner case 53 slides against the outer case 51 along the inclined through groove 523 of the middle case 52 Do.
The axle 542 moves from the upper right portion shown in FIG. 6 to the lower left portion in the lower parallel through hole 521 as shown in FIG. 7. Accordingly, the wheel 54 moves downward with respect to the outer case 51 together with the inner case 53, and the wheel 54 is disposed at the lowermost side with respect to the outer case 51.

According to the door wheel 5 of the present embodiment described above, the following effects can be obtained.
In the present embodiment, the axle shaft insertion through hole 533 is formed long in the vertical direction (longitudinal direction to the lateral direction which is the longitudinal direction of the inner case 53), and the side walls of the outer case 51 as a pair of support walls are bent. It has inward projections 532 as bends which are spaced apart from each other as they move away from the apex.
As a result, there is no need for any additional parts for realizing so-called ups and downs in which the wheel 54 is inclined with respect to the lower rod 42, and a simple structure, low cost, rise and fall type wheel capable of inclining the wheel 54. It becomes possible to provide a door wheel 5 having 54. In particular, since the inward protruding portion 532 is provided, it is possible to realize stable raising and lowering of the wheel 54 of the door roller 5 up to a predetermined inclination angle.

Further, the side walls of the outer case 51 as a pair of support walls have laterally spaced apart portions 535 which are separated from each other as they are separated from the axle shaft insertion through hole 533 in the direction in which the plurality of wheels 54 are arranged. The central portion of the laterally spaced portion 535 is formed of a flat portion where the bent portion (inward protrusion 532) is not formed.
Thus, by arranging the inner central through hole 531 to which the entire load of the shoji 4 is applied at the position of the laterally separated portion 535, the portion of the inner case 53 in which the inner central through hole 531 is formed has high rigidity. It becomes possible to make it a part, and it becomes possible to improve the load resistance and endurance of inner case 53.

The inner case 53 has an outer case 51 and an inner case 53 supported by the outer case 51 so as to be pivotable relative to the outer case 51 inside the outer case 51, and the inner case 53 supports an axle 542.
As a result, the inner case 53 swings with respect to the outer case 51, so that each wheel 54 can properly contact the rails 2212 and 2232 even when having a plurality of wheels 54. It becomes.

  Further, in the present embodiment, the outer case 51, the middle case 52 supported by the outer case 51 so as to be movable in the horizontal direction with respect to the outer case 51, and the outer case movably in the vertical direction with respect to the middle case 52. 51 is supported by the inner case 53 rotatably supporting the wheel 54, and the middle case 52 is formed with an inclined through groove 523 which is an inclined groove inclined relative to the horizontal direction and the vertical direction, The case 51 is formed with an outer central through hole 511 which is a vertical groove extending in the vertical direction, and the inner case 53 is formed with an inner central through hole 531 as a shaft member through hole through which the shaft member 6 passes. The shaft member 6 is engaged with the outer central through hole 511 and the inner central through hole 531.

  As a result, the inner case 53 can be moved up and down by moving the middle case 52 in the horizontal direction. As a result, the wheel 54 can be moved up and down. At this time, the middle case 52 moves in the horizontal direction, and the middle case 52 does not separate from the outer case, and the upper end of the middle case 52 slides in a state of being in contact with the outer case 51 at a wide portion. The load applied to the wheel 54 can be supported by both the inner case 53 and the outer case 51, and concentration of the load of the shoji 4 can be suppressed. In addition, by making the wheels 54 plural, it is possible to reduce the diameter of the wheels 54 by dispersing the load applied to one wheel 54, and as a result, the size of the door wheel 5 itself can be reduced. It becomes possible to make small the height in the up-and-down direction of lower iron 42 which stores door wheel 5 in it.

  Further, the shaft member 6 has a circumferential surface linear portion 62 as a groove engaging portion engaged with the inclined through groove 523 and the outer central through hole 511 at both end portions in the axial direction of the shaft member 6, The central portion 61 is configured to be larger than the inclined through groove 523 such that the central portion 61 can not be inserted through the inclined through groove 523. Thereby, it is possible to prevent the shaft member 6 from being detached from the outer case 51, the middle case 52, and the inner case 53.

  In the present embodiment, the inner case 53 is formed as an axial member guide member in which the inclined through groove 523 is formed to be inclined with respect to the horizontal direction and the vertical direction and the shaft member 6 engages, and the inclined through groove 523 is formed. The portion of the shaft member 6 in contact with the inner case 53 has an inclined shape following the inclined through groove 523. As a result, the circumferential linear portion 62 can abut on the wide portion along the inclined through groove 523 to support the load of the shoji 4, and it becomes possible to suppress the deformation of the shaft member 6. As a result, it is possible to maintain a smooth movement of the inner case 53 with respect to the middle case 52.

  The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like as long as the object of the present invention can be achieved are included in the present invention. For example, the configuration of each part of the door roller is not limited to the configuration of each part of the door roller 5 in the present embodiment. For example, the number of wheels included in one door wheel is not limited to the number of wheels 54 of the door wheel 5 in the present embodiment. Further, the configurations of the outer case, the middle case, and the inner case are not limited to the configurations of the outer case 51, the middle case 52, and the inner case 53 in the present embodiment.

Reference Signs List 5 door roller 6 shaft member 51 outer case 52 middle case 53 inner case 54 wheel 61 central portion 62 circumferential linear portion 511 outer central through hole (vertical groove)
523 ... inclined through groove (inclined groove)
531 ... Inner central through hole (shaft member through hole)

Claims (6)

The outer case,
A middle case supported by the outer case so as to be movable in a first direction with respect to the outer case;
And an inner case supported by the outer case so as to be movable in a second direction intersecting the movement direction of the middle case with respect to the middle case and supporting a wheel,
The middle case is formed with an inclined groove which is inclined with respect to the moving direction of the outer case,
The outer case is formed with a longitudinally extending longitudinal groove,
The inner case is formed with a shaft member through hole through which the shaft member passes;
The shaft member is engaged with the inclined groove and the vertical groove. A box-shaped outer case with at least one opening;
A middle case which is housed in the outer case and in which inclined grooves are formed in a pair of support walls;
An inner case supporting a wheel exposed from an opening of the outer case;
Equipped with
A door according to claim 1, wherein the inner case is slidable relative to the outer case along the inclined grooves of the middle case in a state where the middle case is in contact with the end of the outer case facing the opening. The inner case extends in the vertical direction and forms a pair of side walls forming a support hole for pivotally supporting the wheel.
The door according to claim 1 or 2, further comprising: a bent portion formed on the side wall and bent inward into a substantially U shape in a cross sectional view.   A substantially parallelogram including a pair of flat surfaces along the side wall of the inclined groove and a pair of flat surfaces along the side wall of the upper and lower grooves formed in the outer case and extending in the short direction of the case on the inner case The door and wheel assembly according to claim 1 or 2, further comprising: The inner case supports a plurality of wheels,
The door according to claim 1, wherein the inner case is supported by the outer case so as to be pivotable relative to the outer case inside the outer case via the shaft member. The shaft member includes a groove engaging portion engaged with the inclined groove and the longitudinal groove at both end portions of the shaft member, and an intermediate portion between the groove engaging portions.
The door and wheel according to claim 1, wherein the intermediate portion abuts on a portion of the middle case that constitutes the inclined groove.

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