JP2019082037A - Door roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door roller capable of tilting a wheel by a simple configuration. SOLUTION: A case having a shaft support portion 53 having a pair of support walls on which a through hole 533 is formed and an axle 542 are provided in the pair of through holes 533 on one end side and the other end of the axle 542, respectively. A pair of through holes 533 is formed long in the vertical direction, and a pair of support walls are vertically and vertically provided. It is a door roller having a separation portion 532 that separates from each other as it moves away from the through hole 533 in the direction. [Selection diagram] FIG. 6

Description

  The present invention relates to a door provided at the lower part 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. The wheel axles are supported by the case so that the attitude can be changed from vertical to the rail on which the roller rolls, and to an inclined state with respect to the rail, whereby the wheel is inclined. It is possible (can be defeated) (see, for example, Patent Document 1).

Registered Utility Model No. 314664

  The conventional door roller described in the above publication is provided with a spring for returning the wheel to the original state after tilting, a guide component for stabilizing the state where the wheel is inclined, and the like. The configuration of was very complicated.

  An object of the present invention is to provide a door wheel capable of tilting a wheel with a simple configuration.

  In order to achieve the above object, the present invention provides a case including a shaft support (for example, an inner case 53 described later) having a pair of support walls in which a through hole (for example, an axle insertion through hole 533 described later) is formed. And a wheel (for example, a wheel 54 described later) supported by an axle (for example, an axle 542 described later) inserted in the pair of through holes, and the pair of through holes are formed long in the longitudinal direction The pair of support walls are provided with long holes, and the pair of support walls provide a door with bends (for example, inward projections 532 described later) formed to be separated from each other in the longitudinal direction.

  Further, according to the present invention, an inner case (for example, an inner case 53 described later) having a pair of support walls disposed at a predetermined interval, and an outer case (for example, an outer case 51 described later) supporting the inner case. And a long hole (for example, an axle insertion through hole 533 described later, which is formed on the pair of support walls and extends in a first direction (for example, the vertical direction and the There is provided a door wheel including a supported wheel, and a bent portion formed on the support wall and bent inward along the long hole.

  The inner case is further provided with a middle case (for example, middle case 52 described later) which is housed in the outer case and in which a sloped groove is formed in a pair of support walls, and the inner case is a sloped groove of the middle case (for example It is preferable to support the inclined through groove 523) by surface contact.

  Moreover, it is preferable that the said bending part is formed in the general character along the said long hole by cross sectional view.

  Further, the shaft support portion supports the plurality of wheels, and the pair of support walls has the bent portion in a second direction (for example, a lateral direction or a lateral direction described later) in which the plurality of wheels are arranged. It is preferable to have a flat portion which is not formed (for example, a laterally spaced portion 535 described later).

  The case has an outer case, and an inner case supported by the outer case so as to be pivotable relative to the outer case inside the outer case, and the inner case has a shaft support portion. Is preferred.

  According to the present invention, it is possible to provide a door wheel capable of inclining the wheel with a simple configuration.

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 sliding door of the door according to 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 disposed 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 a hollow structure and has a hollow structure with an upper frame outdoor side main body 211 which is a hollow structure having a rectangular section, and a rectangular section having an hollow section. An upper frame intermediate main body having a hollow structure and having a hollow portion, which is disposed between the upper frame indoor side main body 212 having a hollow structure and the upper frame outdoor side main body 211 and the upper frame indoor side main body 212 in an expected direction. And 213. The upper frame outdoor side main body 211 and the upper frame intermediate main body 213 are connected by a connecting member 215 made of resin, for example. The upper frame middle main body 213 and the upper frame indoor side main body 212 are connected by a connecting member 216 made of resin, for example.
FIG. 3 is a longitudinal sectional view of the sliding door 1.

  In the lower part of the connected upper frame outdoor side main body 211 and the upper frame middle main body 213, an outdoor side glass panel support concave portion 217, one of which is open, is formed. Moreover, the indoor side glass panel support recessed part 218 which one side opens is formed in the lower part of the upper frame intermediate main body 213 and the upper frame indoor side main body 212 which were connected. In the outdoor side glass panel support concave portion 217 and the indoor side glass panel support concave portion 218, U-shaped opening upper fixing members 2171 and 2181 each having one opening are provided. Recessed ceiling members 2172 and 2182 having extensions extending downward are fixed to the upper opening fixing members 2171 and 2181, respectively. The upper portion of the glass panel 45 is disposed in the portion of the outdoor side glass panel support concave portion 217 on the lower side of the concave portion ceiling members 2172 and 2182 and the portion of the indoor side glass panel support concave portion 218.

The lower frame 22 is, as shown in FIGS. 3 and 5, a lower frame outdoor side main body 221, which is a hollow structure having a rectangular cross section, disposed on the outdoor side and having a hollow portion, and is disposed indoors and has a hollow portion. A lower frame indoor side main body 222 which is a hollow structure having a rectangular cross section, and a lower structure which is disposed between the lower frame outdoor side main body 221 and the lower frame indoor side main body 222 in the expected direction and has a hollow portion. And a frame intermediate body 223. The lower frame outdoor side main body 221 and the lower frame intermediate main body 223 are connected by a connecting member 225. The lower frame intermediate body 223 and the lower frame indoor side main body 222 are connected by a connecting member 226.
FIG. 5 is an enlarged vertical sectional view of the lower part of the sliding door 1.

  In the upper part of the lower frame outdoor side main body 221, an outdoor side concave portion 2211 having a shape in which one side opens in a U-shaped cross section is formed. The indoor side portion of the outdoor side recess constitutes a rail 2212 for guiding the door 5 of the shoji 4. At the upper part of the lower frame middle main body 223, an upper middle extension 2223 extending in a crank shape upward, and a rail 2232 provided on the indoor side than the middle upper extension 2231 and extending in a crank shape upward are provided. ing. An intermediate connection member 2233 is provided between the intermediate upper extension 2231 and the rail 2232. In addition, a rail bottom member 2213 made of resin is provided to be fitted to the lower portion of the rail between the rail 2212 and the middle upper extension 2231. At the upper part of the lower frame indoor side main body 222, an indoor upper extension part 2221 extending upward is provided. An indoor coupling member 2223 made of resin is provided between the indoor upper extension part 2221 and the rail 2232 so as to be fitted to the lower part of the indoor upper extension part 2221 and the rail 2232.

As shown in FIG. 4, the vertical frame 23 is arranged on the outdoor side, and has a hollow structure having a hollow section. The vertical frame outdoor side main body 231 has a hollow structure, and the rectangular section has the hollow section. A vertical frame middle body having a hollow structure and a hollow structure, which is disposed between the vertical frame indoor side main body 232 having a hollow structure and the vertical side frame outer side main body 231 and the vertical frame indoor side main body 232 in the expected direction And 233. The vertical frame outdoor side main body 231 and the vertical frame middle main body 233 are connected by a connecting member 235. The vertical frame middle main body 233 and the vertical frame indoor side main body 232 are connected by a connecting member 236.
FIG. 4 is a cross-sectional view of the sliding door 1.

  An outdoor central extension 2311 extending inward in the finding direction is provided on the central position side (inward in the finding direction) of the vertical frame outdoor side main body 231. On the inner side of the vertical frame intermediate main body 233 in the direction of finding, an intermediate central extending portion 2331 extending inward in the direction of finding is provided. As shown in FIG. 4, when the shoji 4, 4 are closed, the outer end in the finding direction of the shoji 4 is disposed between the outdoor central extension 2311 and the middle central extension 2331. . Further, an indoor central extending portion 2321 extending inwardly in the finding direction is provided on the inner side of the vertical frame indoor side main body 232 in the finding direction. Between the indoor center extension part 2321 and the middle center extension part 2331, a door tip side vertical rod facing member 237 is provided.

  As shown in FIG. 4, the vertical frame 24 is a hollow frame-side main body 241 which is a hollow structure having a rectangular cross-section which is disposed on the outdoor side and has a hollow portion, and a rectangular cross-section having a hollow portion. A vertical frame middle body having a hollow structure and having a hollow portion, which is disposed between the vertical frame indoor side main body 242 having a hollow structure and the vertical frame outdoor side main body 241 and the vertical frame indoor side main body 242 in the expected direction. And 243. The vertical frame outdoor side main body 241 and the vertical frame middle main body 243 are connected by a connecting member 245. The vertical frame middle main body 243 and the vertical frame indoor side main body 242 are connected by a connecting member 246.

  The vertical frame outdoor side main body 241 is provided with an outdoor central extending portion 2411 extending inward in the finding direction. The vertical frame middle main body 243 is provided with a middle central extension 2431 extending inward in the finding direction. Between the outdoor central extending portion 2411 and the middle central extending portion 2431, a door tip side vertical rod facing member 247 is fitted and provided. The vertical frame indoor side main body 242 is provided with an indoor central extension portion 2421 extending inward in the finding direction. As shown in FIG. 4, when the shoji 4 and 4 are closed, the outer end in the finding direction of the shoji 4 is disposed between the indoor central extension 2421 and the middle central extension 2431. .

  As shown in FIG. 3, the upper weir 41 includes an upper weir outdoor side wall 411 disposed on the outdoor side, and an upper weir indoor side main body 412 having a hollow structure with a rectangular cross section disposed indoors and having a hollow portion. And. 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 eyelid outdoor side wall portion 411 and the upper eyelid indoor side main body 412 are connected by a connecting member 415. A glass panel insertion recess 417, one of which is open, is formed at the lower part of the upper outdoor side wall 411 and the upper indoor side main body 412 connected. 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 weir 42 includes a lower weir outdoor side wall portion 421 disposed on the outdoor side, and a lower weir indoor side main body 422 which is an hollow structure and is a hollow structure having a hollow portion. 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 eyelid outdoor side wall portion 421 and the lower eyelid indoor side main body 422 are connected by a connecting member 425. A glass panel insertion recess 427 opening upward is formed in the upper portion of the lower-outdoor outdoor side wall portion 421 and the lower-door 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 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 main body portion 431 and an outdoor side support member 432 having an L-shaped cross section are provided. The inner body portion 431 and the outdoor side support member 432 are connected by a connection member 435. 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 outdoor side support member 432. In addition, a smoke return 4311 that extends to the outdoor side and bends in an L-shape is provided at the end of the door back of the calling member main body 431. 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 has a hollow structure with a rectangular cross section having a hollow portion and is disposed on the outdoor side with the door tip side wall portion 441 disposed on the indoor side. And an outdoor side main body 442. 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 wall portion 441 and the door-to-door outdoor side main body 442 are connected by a connecting member 445. A glass panel insertion concave portion 447 having one opening is formed in a portion on the door butt side of the coupled door tip / indoor side wall portion 441 and the door tip / outdoor 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 subcommittee 43 of the shoji 4 located on the outdoor side 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. The outer cover body 431 and a plate-like indoor support member 434 are provided. The member body 431 and the indoor side support member 434 are connected by the connection member 436. Further, on the indoor side of the indoor side support member 434, a smoke return 4341 that extends to the indoor side and bends in an L shape is provided. 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 packing 439 is provided on the indoor side of the end of the calling party main body portion 431 on the door butt side. By locking the shoji 4 and 4 with the locking device 46, the shoji 4 and 4 approach each other in the expected direction, the packing 439 abuts on the outdoor side plate member 433, and the shoji 4 and 4 are airtight. 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 has a hollow structure with a rectangular cross section having a hollow portion and a door tip side wall portion 441 disposed on the indoor side, and a door exterior side. And an outdoor side main body 442. 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 wall portion 441 and the door-to-door outdoor side main body 442 are connected by a connecting member 445. A glass panel insertion recess 447 is formed on the door butt side of the connected door front and back indoor side wall portion 441 and the door front and rear side main body 442 on the door butt side. The glass panel insertion recess 447 is provided with a glazing channel 4471 having a U-shaped cross section that opens on the rear end side, and the end of the glass panel 45 is inserted into the opening of the glazing channel 4471. 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 letter 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 where 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 portion 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.

5: Door wheel 51: Outer case 52: Middle case 53: Inner case 54: Wheel 532: Inward protrusion 533: Axle insertion through hole 535: Lateral separation portion 542: Axle

Claims (6)

A case comprising a shaft support portion having a pair of support walls each having a through hole formed therein;
A wheel supported by an axle inserted into the pair of through holes;
The pair of through holes are constituted by elongated holes formed longitudinally in the longitudinal direction,
The pair of support walls has a bending portion formed to be separated from each other in the longitudinal direction. An inner case having a pair of support walls disposed at a predetermined interval, and an outer case supporting the inner case,
An elongated hole formed in the pair of support walls and extending in the first direction, a wheel pivotally supported by the elongated hole, and the support wall are formed and bent inward along the elongated holes A door wheel provided with a bending portion. The door according to claim 2, further comprising: a middle case housed in the outer case and having a pair of support walls in which inclined grooves are formed, and the inner case is pivotally supported by the inclined grooves in the middle case. The door according to claim 1 or 2, wherein the bent portion is formed in a generally U-shape along the long hole in a cross sectional view. The shaft support supports a plurality of the wheels,
The door wheel according to claim 1, wherein the pair of support walls has a flat portion in which the bending portion is not formed in a second direction in which the plurality of wheels are arranged. The case includes an outer case and an inner case supported by the outer case so as to be pivotable relative to the outer case inside the outer case.
The door and wheel according to claim 1, wherein the inner case has a shaft support.

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