JP7846973B2 - Door roller - Google Patents
Door rollerInfo
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- JP7846973B2 JP7846973B2 JP2021168939A JP2021168939A JP7846973B2 JP 7846973 B2 JP7846973 B2 JP 7846973B2 JP 2021168939 A JP2021168939 A JP 2021168939A JP 2021168939 A JP2021168939 A JP 2021168939A JP 7846973 B2 JP7846973 B2 JP 7846973B2
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Description
本開示は、戸車に関する。 This disclosure relates to door rollers.
従来、戸車は車輪及び車輪を覆うケースを有して形成される。ケースは、金属製の一枚の板材を折り曲げて形成されている（例えば、特許文献１参照）。 Conventionally, door rollers are formed by having a wheel and a case that covers the wheel. The case is formed by bending a single sheet of metal (see, for example, Patent Document 1).
戸車は、障子の荷重が上部からかかる。このため、障子が大型化すると、板材を折り曲げて形成されたケースが、厚さ方向の外側へ開くように変形する場合があった。 The rollers of the sliding door are subjected to the load of the shoji screen from above. Therefore, when the shoji screen became larger, the case formed by bending the board material could deform, opening outwards in the thickness direction.
本開示は、車輪と、前記車輪を内部に収容し、障子からかかる荷重を受けるケースと、を備え、前記ケースは、金属製の板材を折り曲げて構成され、前記車輪の側面に配置されて互いに向かい合う一対の側面部と、前記一対の側面部同士を前記車輪の移動方向の前後のいずれか側で連結し、前記一対の側面部の一方から延出する第１端面部と、前記一対の側面部の他方から延出する第２端面部と、を重ね合わせることで形成される端面部と、前記一対の側面部のそれぞれが前記ケースの厚さ方向の外側へ開くことを防止する開き規制部と、を有する、戸車に関する。 This disclosure relates to a door roller comprising a wheel and a case that houses the wheel and receives the load from the sliding door, wherein the case is constructed by bending a metal plate and has a pair of side portions that are positioned on the sides of the wheel and face each other, an end portion formed by overlapping a first end portion extending from one of the pair of side portions and a second end portion extending from the other of the pair of side portions that connects the pair of side portions on either the front or rear side in the direction of movement of the wheel, and an opening restricting portion that prevents each of the pair of side portions from opening outward in the thickness direction of the case.
以下、本開示の実施形態について図面を参照しながら詳細に説明する。図１に示すように、戸車１は、ケース２と、車輪３と、保持部４と、高さ調整ピン７と、を有する。戸車１は、図示を省略する建具の障子が上部に取り付けられ、障子を移動可能に支持する。 The embodiments of this disclosure will be described in detail below with reference to the drawings. As shown in Figure 1, the door roller 1 comprises a case 2, a wheel 3, a holding part 4, and a height adjustment pin 7. The door roller 1 has a sliding door panel (not shown) attached to its upper part, and supports the panel so that it can move.
ケース２は、後述する車輪３を内部に収容し、障子からかかる荷重を受けるカバーである。ケース２は、金属製の板材を折り曲げて構成される。図２に示すように、ケース２は、一対の側面部２１と、上面部２２と、端面部２３と、開き規制部６と、を有する。上面部２２の下方と、端面部２３に対向する面とは、開口している。 Case 2 is a cover that houses the wheels 3 (described later) and receives the load from the shoji screen. Case 2 is constructed by bending a metal plate. As shown in Figure 2, Case 2 has a pair of side sections 21, a top section 22, an end section 23, and an opening restricting section 6. The area below the top section 22 and the surface facing the end section 23 are open.
一対の側面部２１は、車輪３の側面に配置され、板材を折り曲げることで互いに向かい合う。図３に示すように、一対の側面部２１は、戸車１の移動方向に沿って長い概ね長方形に近い形状に形成されている。一対の側面部２１は、一方の第１側面部２１１と、他方の第２側面部２１２と、を有する。第２側面部２１２には、後述する切欠き孔６２が形成されている。一対の側面部２１の長手方向に沿う外縁には、係合溝２４が形成されている。係合溝２４は、後述する車輪３の保持部４に形成された係合突起４４（図４参照）が係合するための溝である。 The pair of side sections 21 are positioned on the sides of the wheel 3 and face each other by bending the plate material. As shown in Figure 3, the pair of side sections 21 are formed in a shape that is roughly rectangular and elongated along the direction of movement of the door roller 1. The pair of side sections 21 have one first side section 211 and the other second side section 212. A notch hole 62, which will be described later, is formed in the second side section 212. An engagement groove 24 is formed on the outer edge along the longitudinal direction of the pair of side sections 21. The engagement groove 24 is a groove for engagement with the engagement projection 44 (see Figure 4) formed on the holding portion 4 of the wheel 3, which will be described later.
上面部２２は、一対の側面部２１同士の向かい合う長辺を連結する面である。上面部２２は、ケース２が折り曲げられた状態で、上面に配置される。上面部２２には、車輪の周縁が当たらないように開口が形成されている。 The upper surface 22 is the surface that connects the opposing long sides of the pair of side surfaces 21. The upper surface 22 is positioned on the top surface when the case 2 is folded. An opening is formed in the upper surface 22 to prevent the periphery of the wheels from contacting it.
端面部２３は、戸車１の移動方向の前後のいずれか一方側で、一対の側面部２１同士を連結する部分である。端面部２３は、ケース２が折り曲げられた状態で、ケース２の厚さ方向に延びる。端面部２３は、第１端面部２３１と、第２端面部２３２と、高さ調整ピン用孔２３３と、を有する。端面部２３は、ケース２が折り曲げられた際、第１端面部２３１と第２端面部２３２とが重ね合わせられることで形成される。 The end face portion 23 is the part that connects the pair of side portions 21 on either the front or rear side in the direction of movement of the door roller 1. The end face portion 23 extends in the thickness direction of the case 2 when the case 2 is folded. The end face portion 23 has a first end face portion 231, a second end face portion 232, and a height adjustment pin hole 233. The end face portion 23 is formed when the first end face portion 231 and the second end face portion 232 overlap when the case 2 is folded.
第１端面部２３１は、第１側面部２１１の長手方向に沿って、第１側面部２１１から外側に延出する面である。第１端面部２３１は、短辺２３１ａと、長辺２３１ｂと、上面部重なり代２３１ｃと、外縁辺２３１ｄと、切欠き２３１ｅと、位置合わせ突起２３１ｆを有する。 The first end face portion 231 is a surface that extends outward from the first side surface portion 211 along its longitudinal direction. The first end face portion 231 has a short side 231a, a long side 231b, an overlapping upper surface portion 231c, an outer edge 231d, a notch 231e, and an alignment projection 231f.
短辺２３１ａは、折り曲げられた状態でケース２の厚さ方向に延びる辺である。長辺２３１ｂは、第１側面部２１１の短手方向に延びる辺と重なっている。長辺２３１ｂは、ケース２が折り曲げられた状態でケース２の高さ方向に延びる辺である。長辺２３１ｂは、第１側面部２１１と第１端面部２３１との境界に形成される境界線６３と重なる。上面部重なり代２３１ｃは、図２及び図３に示すように、短辺２３１ａから折り曲げられた状態で上面部２２の下に重ねられる位置に延びる。外縁辺２３１ｄは、長辺２３１ｂと平行して延び、第１端面部２３１の外縁となる。外縁辺２３１ｄには、後述する突出部６１が形成される。切欠き２３１ｅは、第１端面部２３１と、上面部２２と、第１側面部２２１それぞれの端部が合わさる交点の近傍に、略Ｕ字状に切り欠かれて形成される。位置合わせ突起２３１ｆは、第１端面部２３１の一部に切り込みを形成し、切り込みを起こすことで突起となるように形成される。 The short side 231a is the side that extends in the thickness direction of the case 2 when it is folded. The long side 231b overlaps with the side of the first side portion 211 that extends in the short direction. The long side 231b is the side that extends in the height direction of the case 2 when it is folded. The long side 231b overlaps with the boundary line 63 formed at the boundary between the first side portion 211 and the first end portion 231. The top overlap 231c extends from the short side 231a to a position where it overlaps below the top portion 22 when it is folded, as shown in Figures 2 and 3. The outer edge 231d extends parallel to the long side 231b and becomes the outer edge of the first end portion 231. A projection 61, which will be described later, is formed on the outer edge 231d. The notch 231e is formed by cutting out a roughly U-shape near the intersection where the ends of the first end face portion 231, the upper surface portion 22, and the first side surface portion 221 meet. The alignment projection 231f is formed by creating a cut in a part of the first end face portion 231, and then raising the cut to form a projection.
第２端面部２３２は、第２端面部２３２の長手方向に沿って、第２端面部２３２から外側に延出する面である。第２端面部２３２は、短辺２３２ａと、長辺２３２ｂと、外縁辺２３２ｄと、切欠き２３２ｅと、位置合わせ孔２３２ｆと、を有する。 The second end face portion 232 is a surface that extends outward from the second end face portion 232 along its longitudinal direction. The second end face portion 232 has a short side 232a, a long side 232b, an outer edge 232d, a notch 232e, and an alignment hole 232f.
短辺２３２ａは、折り曲げられた状態でケース２の厚さ方向に延びる辺である。長辺２３２ｂは、第２側面部２１２の短手方向に延びる辺と重なっている。長辺２３２ｂは、ケース２が折り曲げられた状態でケース２の高さ方向に延びる辺である。長辺２３１ｂは、第２側面部２１２と第２端面部２３２との境界に形成される境界線６３と重なる。外縁辺２３２ｄは、長辺２３２ｂと平行して延び、第２端面部２３２の外縁となる。切欠き２３２ｅは、第２端面部２３２と、上面部２２と、第２側面部２２２それぞれの端部が合わさる交点の近傍に、略Ｕ字状に切り欠かれて形成される。位置合わせ孔２３２ｆは、第２端面部２３２が第１端面部２３１に重ね合わされたときに、位置合わせ突起２３１ｆが貫通するように配置され、第１端面部２３１と第２端面部２３２が重なる位置を合わせるために設けられる。 The short side 232a is the side that extends in the thickness direction of the case 2 when it is folded. The long side 232b overlaps with the side that extends in the short direction of the second side portion 212. The long side 232b is the side that extends in the height direction of the case 2 when it is folded. The long side 231b overlaps with the boundary line 63 formed at the boundary between the second side portion 212 and the second end portion 232. The outer edge 232d extends parallel to the long side 232b and becomes the outer edge of the second end portion 232. The notch 232e is formed by cutting out a roughly U-shape near the intersection where the ends of the second end portion 232, the top portion 22, and the second side portion 222 meet. The alignment hole 232f is positioned so that the alignment projection 231f passes through it when the second end face portion 232 is superimposed on the first end face portion 231, and is provided to align the overlapping positions of the first end face portion 231 and the second end face portion 232.
高さ調整ピン用孔２３３は、第１端面部２３１及び第２端面部２３２のそれぞれに配置される円形の貫通孔である。第１端面部２３１に形成される高さ調整ピン用孔２３３ａと、第２端面部２３２に形成される高さ調整ピン用孔２３３ｂとは、第１端面部２３１及び第２端面部２３２を重ね合わせたときに、互いに重なって一つの貫通した高さ調整ピン用孔２３３を形成する。 The height adjustment pin holes 233 are circular through holes located in the first end face portion 231 and the second end face portion 232, respectively. The height adjustment pin hole 233a formed in the first end face portion 231 and the height adjustment pin hole 233b formed in the second end face portion 232 overlap to form a single through height adjustment pin hole 233 when the first end face portion 231 and the second end face portion 232 are superimposed.
開き規制部６は、突出部６１と、切欠き孔６２と、を有する。突出部６１は、図３に示すように、第１端面部２３１に形成され、ケース２の展開状態で、第１端面部２３１の外縁辺２３１ｄから戸車１の移動方向に沿う方向に突出する。突出部６１は、略長方形の形状を有し、例えば、第１端面部２３１の長辺２３１ｂの４／１～５／１程度の長さを有し、上面部重なり代２３１ｃの幅と同程度又はそれ以下の幅を有する小さな突出部である。 The opening restricting portion 6 has a protruding portion 61 and a notched hole 62. As shown in Figure 3, the protruding portion 61 is formed on the first end face portion 231 and, in the unfolded state of the case 2, protrudes from the outer edge 231d of the first end face portion 231 in a direction along the direction of movement of the door roller 1. The protruding portion 61 has a roughly rectangular shape, for example, a length of about 1/4 to 1/5 of the long side 231b of the first end face portion 231, and is a small protruding portion with a width approximately equal to or less than the width of the overlap portion 231c of the upper surface.
切欠き孔６２は、第２側面部２１２と第２端面部２３２との間の境界の近傍に配置される。具体的には、切欠き孔６２は、第２側面部２１２と第２端面部２３２との間の境界線６３に沿って、境界線６３よりも第２側面部２１２側に形成される。切欠き孔６２は、突出部６１が挿通可能な寸法を有する略長方形の貫通孔である。 The notch hole 62 is located near the boundary between the second side portion 212 and the second end portion 232. Specifically, the notch hole 62 is formed along the boundary line 63 between the second side portion 212 and the second end portion 232, on the side of the boundary line 63 closer to the second side portion 212. The notch hole 62 is a substantially rectangular through-hole with dimensions through which the protrusion 61 can be inserted.
図２に示すように、第１端面部２３１と第２端面部２３２とが重なるようにケース２が折り曲げられた状態で、突出部６１が切欠き孔６２に挿入される。このとき、突出部６１が形成された第１端面部２３１が、第２端面部２３２よりも内側に位置するように折り曲げられる。 As shown in Figure 2, the case 2 is bent so that the first end face portion 231 and the second end face portion 232 overlap, and the protruding portion 61 is inserted into the notch hole 62. At this time, the first end face portion 231, where the protruding portion 61 is formed, is bent so that it is positioned inward from the second end face portion 232.
車輪３は、ケース２の内部に回転可能に保持され、戸車１を移動可能にする。車輪３は、図４及び図５に示すように、環状部３１と、中央部３２と、薄肉部３３と、車軸３４と、を有する。図１に示すように、車輪３は概ね同じ形状の２つの車輪３ａ、３ｂが、図示しない連結機構により連結されて構成される。 The wheel 3 is rotatably held inside the case 2, allowing the door roller 1 to move. As shown in Figures 4 and 5, the wheel 3 has an annular portion 31, a central portion 32, a thin-walled portion 33, and an axle 34. As shown in Figure 1, the wheel 3 is constructed by connecting two wheels 3a and 3b, which are generally the same shape, with a connecting mechanism (not shown).
環状部３１は、車輪３全体の厚さよりも薄い一対の円環状の部分３１ａ、３１ｂが、車輪３の厚さ方向における一方及び他方に間を空けて配置されることで構成される。環状部３１は、車輪３の外周縁に沿う側面を構成する。環状部３１は、図５に示すように、断面視では、略Ｕ字状の形状を有し、一対の円環状の部分３１ａ、３１ｂが外周側で接続されている。 The annular portion 31 is composed of a pair of annular sections 31a and 31b, thinner than the overall thickness of the wheel 3, arranged with a gap between them in the thickness direction of the wheel 3. The annular portion 31 forms the side surface along the outer edge of the wheel 3. As shown in Figure 5, in cross-sectional view, the annular portion 31 has a roughly U-shape, with the pair of annular sections 31a and 31b connected on the outer circumference.
中央部３２は、一対の円環状の部分３１ａの略中心近傍に配置される。中央部３２は、略円柱状の形状を有する。中央部３２の円柱形状の底面に対応する部分が平坦な平坦面３２１で構成され、円柱形状の側面に対応する側面３２２が車輪３の軸方向に沿うように配置される。平坦面３２１は、後述する保持部４の内側凸部４２に対向する面である。中央部３２の中心に、後述する車軸３４が貫通する貫通孔３２３が形成される。中央部３２は、車軸３４及び貫通孔３２３の外周側では厚さが一定に形成されている。 The central portion 32 is positioned near the approximate center of the pair of annular portions 31a. The central portion 32 has a roughly cylindrical shape. The portion corresponding to the bottom surface of the cylindrical shape of the central portion 32 is composed of a flat surface 321, and the side surfaces 322 corresponding to the sides of the cylindrical shape are positioned along the axial direction of the wheel 3. The flat surface 321 is the surface facing the inner protrusion 42 of the holding portion 4, which will be described later. A through hole 323 is formed in the center of the central portion 32, through which the axle 34, described later, passes. The thickness of the central portion 32 is uniform on the outer circumference side of the axle 34 and the through hole 323.
薄肉部３３は、図５に示すように、中央部３２と環状部３１の間に配置され、部分的に厚さが薄くなった部分である。薄肉部３３は、環状に形成されている。 As shown in Figure 5, the thin-walled portion 33 is located between the central portion 32 and the annular portion 31, and is a part in which the thickness is partially reduced. The thin-walled portion 33 is formed in an annular shape.
車軸３４は、中央部３２の中心を車輪３の厚さ方向に貫通する軸部である。車軸３４は、後述する保持部４と車輪３の両方を貫通して接続する。 The axle 34 is a shaft portion that penetrates the center of the central portion 32 in the thickness direction of the wheel 3. The axle 34 connects both the retaining portion 4 (described later) and the wheel 3 by passing through them.
保持部４は、車輪３をケース２内に回転可能に保持する部材である。保持部４は、２つの車輪３の一方側の車輪３ａのみに配置される。図４に示すように、保持部４は、平面視で一方が開放された略コの字状に形成され、車輪３ａの側面を覆う保持側面４１と、内側凸部４２と、軸孔４５と、接続部４３と、係合突起４４と、を有する。 The retaining portion 4 is a member that rotatably holds the wheel 3 within the case 2. The retaining portion 4 is positioned only on one of the two wheels 3a. As shown in Figure 4, the retaining portion 4 is formed in a roughly U-shape with one end open in plan view, and includes a retaining side surface 41 that covers the side of the wheel 3a, an inner protrusion 42, an axle hole 45, a connecting portion 43, and an engaging projection 44.
保持側面４１は、車輪３ａの外側面に沿って延びる薄い板状の部材である。保持側面４１は、間に車輪３ｂを挟んで一対配置され、車輪３の車軸３４が貫通する。保持側面４１は、車輪３ｂから離れた上方から車輪３ｂに近づくにしたがって下方に湾曲する湾曲部４１ａと、湾曲部４１ａの下方端部から車輪３ａの中央部３２を覆うように横に延びる中央保持部４１ｂと、を有する。 The retaining side 41 is a thin, plate-like member extending along the outer surface of the wheel 3a. A pair of retaining side 41s are arranged with the wheel 3b in between, and the axle 34 of the wheel 3 passes through them. The retaining side 41 has a curved portion 41a that curves downward from above, away from the wheel 3b, as it approaches the wheel 3b, and a central retaining portion 41b that extends laterally from the lower end of the curved portion 41a to cover the central portion 32 of the wheel 3a.
内側凸部４２は、中央保持部４１ｂにおける車軸３４が貫通する部分の周囲に形成される。内側凸部４２は、図５に示すように、断面視で車軸３４が貫通する部分の周囲が、他の部分よりも内側に向かって凸となるように曲がっている部分である。内側とは、一対の保持側面４１の間の内部に向かう側である。内側凸部４２は、車軸３４の中心が最も内側に位置するように、断面視略Ｖ字状に傾斜して形成されている。内側凸部４２は、図４に示すように、保持側面４１の車軸３４が配置される部分の近傍で一定の範囲に亘って形成される。具体的には、内側凸部４２の幅は、車輪３の中央部３２の幅と同程度であることが好ましい。 The inner protrusion 42 is formed around the portion of the central holding portion 41b through which the axle 34 passes. As shown in Figure 5, the inner protrusion 42 is the portion that, in cross-sectional view, is curved so as to be more convex inward than other portions, around the portion through which the axle 34 passes. "Inward" refers to the side facing inward between the pair of holding sides 41. The inner protrusion 42 is formed with a roughly V-shape inclination in cross-sectional view, so that the center of the axle 34 is located furthest inward. As shown in Figure 4, the inner protrusion 42 is formed over a certain range near the portion of the holding side 41 where the axle 34 is positioned. Specifically, it is preferable that the width of the inner protrusion 42 is approximately the same as the width of the central portion 32 of the wheel 3.
軸孔４５は、車軸３４が貫通する孔である。軸孔４５は、その中心が内側凸部４２に形成された傾斜面の最も内側に向かって凸となった部分に配置される。 The axle hole 45 is a hole through which the axle 34 passes. The axle hole 45 is positioned at the innermost convex portion of the inclined surface formed on the inward convex portion 42.
接続部４３は、一対の保持側面４１の湾曲部４１ａの端部を、車輪３ａの厚さ方向に接続する面である。接続部４３は、後述する高さ調整ピン７の端部が当接する面である。接続部４３は、ケース２内に配置された状態で、端面部２３に対向する位置に配置される。 The connecting portion 43 is the surface that connects the ends of the curved portions 41a of the pair of retaining sides 41 in the thickness direction of the wheel 3a. The connecting portion 43 is the surface that the end of the height adjustment pin 7 (described later) contacts. When the case 2 is positioned, the connecting portion 43 is positioned opposite the end surface portion 23.
係合突起４４は、保持側面４１の湾曲部４１ａの下方に、保持側面４１から外側に突出する円環状の突起である。図１に示すように、係合突起４４は、保持部４がケース２内に配置された状態で、ケース２の係合溝２４に係合する。 The engaging projection 44 is an annular projection that protrudes outward from the retaining side surface 41, located below the curved portion 41a of the retaining side surface 41. As shown in Figure 1, the engaging projection 44 engages with the engaging groove 24 of the case 2 when the retaining portion 4 is positioned inside the case 2.
高さ調整ピン７は、ケース２の外側から、高さ調整ピン用孔２３３を貫通して接続部４３に端部が当接するように配置される。高さ調整ピン７をケース２の内部へ押すと、保持部４の接続部４３の上部を押圧する。これにより、保持側面４１に形成された係合突起４４を中心として、保持部４が反時計方向に回転する。保持部４の回転に伴って、図示しない連結機構によって接続される２つの車輪３ａ、３ｂが、ケース２の下方側に移動する。この結果、車輪３とケース２を合わせた戸車１全体の高さ方向の寸法が大きく、高くなる。高さ調整ピン７を接続部４３から離すと、図１に示すように、車輪３がケース２内に納まり、戸車１全体の高さ方向の寸法が小さく、低くなる。 The height adjustment pin 7 is positioned on the outside of the case 2, passing through the height adjustment pin hole 233 and with its end contacting the connection portion 43. When the height adjustment pin 7 is pushed into the case 2, it presses against the upper part of the connection portion 43 of the holding portion 4. This causes the holding portion 4 to rotate counterclockwise around the engaging projection 44 formed on the holding side surface 41. As the holding portion 4 rotates, the two wheels 3a and 3b, connected by a coupling mechanism (not shown), move downwards within the case 2. As a result, the overall height dimension of the door roller 1, including the wheels 3 and case 2, increases. When the height adjustment pin 7 is moved away from the connection portion 43, as shown in Figure 1, the wheels 3 fit inside the case 2, and the overall height dimension of the door roller 1 decreases.
高さ調整ピン７は、高さ調整ピン用孔２３３を貫通はするものの、締結されていない。このため、第１端面部２３１及び第２端面部２３２は、ケース２の厚さ方向に移動可能な程度の緩みをもって重ねられている。障子の戸車１にかかる重量が増加すると、金属製の板材を折り曲げて形成したケース２は、厚さ方向に開くように変形させる力がかかる。図２に示すように、開き規制部６の切欠き孔６２に突出部６１が挿入されている。ケース２の上面部２２が障子の荷重を受けて押さえつけられている状態で、第１端面部２３１及び第２端面部２３２が開こうとしても、突出部６１の上端が切欠き孔６２の上端に係合する。突出部６１の面は、切欠き孔６２の境界線６３に近い方の長縁に係合する。このように、開き規制部６の突出部６１と切欠き孔６２とが係合することで、第１端面部２３１及び第２端面部２３２がケース２の厚さ方向の外側へ開く動きが規制される。 The height adjustment pin 7 passes through the height adjustment pin hole 233, but is not fastened. Therefore, the first end face portion 231 and the second end face portion 232 are overlapped with enough slack to allow movement in the thickness direction of the case 2. When the weight on the sliding door roller 1 of the shoji screen increases, a force is applied that deforms the case 2, which is formed by bending a metal plate, to open in the thickness direction. As shown in Figure 2, the projection portion 61 is inserted into the notch hole 62 of the opening restricting portion 6. Even when the first end face portion 231 and the second end face portion 232 try to open while the upper surface portion 22 of the case 2 is pressed down by the load of the shoji screen, the upper end of the projection portion 61 engages with the upper end of the notch hole 62. The surface of the projection portion 61 engages with the longer edge of the notch hole 62 that is closer to the boundary line 63. In this way, the engagement between the protruding portion 61 of the opening restricting portion 6 and the notched hole 62 restricts the movement of the first end face portion 231 and the second end face portion 232 from opening outward in the thickness direction of the case 2.
車輪３は、戸車１の移動に伴って回転する。回転するとき、保持部４の保持側面４１が平坦に形成されていた場合、車輪３の側面、特に中央部３２の平坦面３２１と保持側面４１の内面とが接触して摩擦することが考えられる。摩擦により、車輪３や保持部４の耐久性が低下したり、回転抵抗が生じたりする等の不都合が考えられうる。しかし、保持側面４１に内側凸部４２が形成されている。内側凸部４２が断面視略Ｖ字状に傾斜し、車軸３４及び車軸３４が貫通する軸孔４５の中心が最も内側に位置するように配置されていることで、車輪３と保持側面４１との接触面積が最小限になる。 The wheel 3 rotates as the door roller 1 moves. When rotating, if the holding side surface 41 of the holding part 4 were flat, friction could occur between the side surface of the wheel 3, particularly the flat surface 321 of the central part 32, and the inner surface of the holding side surface 41. This friction could lead to problems such as reduced durability of the wheel 3 and holding part 4, or the creation of rotational resistance. However, an inner protrusion 42 is formed on the holding side surface 41. The inner protrusion 42 is inclined in a roughly V-shape in cross-section, and the center of the axle 34 and the axle hole 45 through which the axle 34 passes are positioned furthest inward, minimizing the contact area between the wheel 3 and the holding side surface 41.
第１実施形態によれば、以下の効果が奏される。戸車１を、車輪３と、車輪３を内部に収容し、障子からかかる荷重を受けるケース２と、を含んで構成した。ケース２を、金属製の板材を折り曲げて構成され、車輪３の側面に配置されて互いに向かい合う一対の側面部２１と、一対の側面部２１同士を車輪３の移動方向の前後のいずれか側で連結し、一対の側面部２１の一方から延出する第１端面部２３１と、一対の側面部２１の他方から延出する第２端面部２３２と、を重ね合わせることで形成される端面部２３と、一対の側面部２１のそれぞれがケース２の厚さ方向の外側へ開くことを防止する開き規制部６と、を含んで構成した。開き規制部６により、一対の側面部２１のそれぞれが、ケースの厚さ方向の外側へ開くことが防止される。このため、ケース２の変形が防止される。よって、障子等の戸車に荷重をかける部材が大型化したり重量が増加したりしても、戸車１の耐久性が向上する。 According to the first embodiment, the following effects are achieved. The door roller 1 is configured to include a wheel 3 and a case 2 that houses the wheel 3 and receives the load from the sliding door. The case 2 is configured to include a pair of side portions 21 that are arranged on the side of the wheel 3 and face each other, an end portion 23 formed by overlapping a first end portion 231 extending from one of the pair of side portions 21 and a second end portion 232 extending from the other of the pair of side portions 21, which are connected on either the front or rear side in the direction of movement of the wheel 3, and an opening restricting portion 6 that prevents each of the pair of side portions 21 from opening outward in the thickness direction of the case 2. The opening restricting portion 6 prevents each of the pair of side portions 21 from opening outward in the thickness direction of the case. Therefore, deformation of the case 2 is prevented. Thus, even if the load-bearing member such as a sliding door becomes larger or heavier, the durability of the door roller 1 is improved.
第１実施形態によれば、開き規制部６を、第１端面部２３１又は第２端面部２３２のいずれか一方に形成され、展開状態で車輪３の移動方向に沿う方向に突出する突出部６１と、一対の側面部２１における第１端面部２３１又は第２端面部２３２のいずれか他方に配置され、側面部２１と端面部２３との境界近傍に形成される切欠き孔６２と、を含んで構成した。ケース２が折り曲げられた状態で、突出部６１が切欠き孔６２に挿入されるように構成した。突出部６１を切欠き孔６２に挿入することで、ケース２の一対の側面部２１が開くことを防止することができる。このため、金属製の板材を折り曲げてケース２を構成する場合に、部材の追加を必要とせず、折り曲げの工程のみで戸車１の変形を防止することができる。よって、上記と同様の効果を奏することができる。 According to the first embodiment, the opening restricting portion 6 is configured to include a projection 61 formed on either the first end face portion 231 or the second end face portion 232, projecting in a direction along the direction of movement of the wheel 3 when unfolded, and a notch hole 62 positioned on the other of the pair of side portions 21, near the boundary between the side portion 21 and the end face portion 23. The case 2 is configured so that the projection 61 is inserted into the notch hole 62 when the case 2 is folded. By inserting the projection 61 into the notch hole 62, the pair of side portions 21 of the case 2 can be prevented from opening. Therefore, when the case 2 is constructed by bending a metal plate, deformation of the door roller 1 can be prevented by the bending process alone, without the need for additional members. Thus, the same effects as described above can be achieved.
第１実施形態によれば、第１端面部２３１又は第２端面部２３２のいずれかのうち、突出部６１が形成された側を内側に位置するように折り曲げた。突出部６１が形成された第１端面部２３１又は第２端面部２３２のいずれか一方を内側に最初に曲げ、次に突出部６１が形成されていない第１端面部２３１又は第２端面部２３２のいずれか他方を重ねるように折り曲げることで、突出部６１が切欠き孔６２に係合する。容易で簡易な方法で折り曲げの工程のみでケース２の一対の側面部２１が開くことを防止することができ、上記と同様の効果を奏することができる。 According to the first embodiment, either the first end face portion 231 or the second end face portion 232 was bent so that the side on which the protrusion 61 was formed was positioned inward. By first bending one of the two end face portions 231 or 232 on which the protrusion 61 was formed inward, and then bending the other end face portion 231 or 232 on which the protrusion 61 was not formed to overlap, the protrusion 61 engaged with the notch hole 62. This simple and easy method, using only the bending process, prevents the pair of side portions 21 of the case 2 from opening, achieving the same effects as described above.
本開示は上記実施形態に限定されるものではなく、本開示の目的を達成できる範囲での変形、改良等は本開示に含まれる。図６及び図７は、第２実施形態に係る戸車１Ａのケース２Ａの斜視図及び展開図である。第２実施形態では、図７に示すように、開き規制部６Ａの切欠き孔６２Ａが、第１側面部２１１Ａと第１端面部２３１Ａとの間の境界線６３に跨って配置されている。突出部６１Ａは、第１実施形態と比べて、戸車１の移動方向に沿って外側により長く突出している。 This disclosure is not limited to the embodiments described above, and modifications, improvements, etc., to the extent that they can achieve the objectives of this disclosure are included. Figures 6 and 7 are a perspective view and an exploded view of the case 2A of the door roller 1A according to the second embodiment. In the second embodiment, as shown in Figure 7, the notch hole 62A of the opening restricting portion 6A is positioned across the boundary line 63 between the first side portion 211A and the first end portion 231A. The protruding portion 61A protrudes further outward along the direction of movement of the door roller 1 compared to the first embodiment.
図６及び７に示すように、突出部６１Ａが形成された第２端面部２３２Ａは、第１端面部２３１Ａの外側で折り曲げられ、第１端面部２３１Ａを覆った状態で突出部６１Ａが切欠き孔６２Ａに挿入される。第２実施形態によれば、第１端面部２３１Ａを覆った上から突出部６１Ａを切欠き孔６２Ａに挿入するため、覆われた側の第１端面部２３１Ａが第２端面部２３２Ａに押さえられ、動く自由度が小さくなる。このため、第１実施形態よりもより強固にケース２が開くことを防止することが可能になる。 As shown in Figures 6 and 7, the second end face portion 232A, on which the protrusion 61A is formed, is bent outside the first end face portion 231A, and the protrusion 61A is inserted into the notch hole 62A while covering the first end face portion 231A. According to the second embodiment, since the protrusion 61A is inserted into the notch hole 62A from above, covering the first end face portion 231A, the covered side of the first end face portion 231A is pressed down by the second end face portion 232A, reducing its degree of freedom of movement. Therefore, it becomes possible to prevent the case 2 from opening more firmly than in the first embodiment.
図８及び図９は、第３実施形態に係る戸車１Ｂのケース２Ｂの斜視図及び展開図である。第３実施形態では、切欠き孔６２Ｂは、第１の切欠き孔６２１と、第２の切欠き孔６２２と、を有する。第１の切欠き孔６２１は、第１側面部２１１Ｂと第１端面部２３１Ｂとの境界線６３を跨る位置に形成される。第２の切欠き孔６２２は、境界線６３の第１側面部２１１Ｂ側に形成され、第１の切欠き孔６２１と並んで配置される。第２の切欠き孔６２２は、第１の切欠き孔６２１と、長さが同じで幅が小さい略長方形に形成される。 Figures 8 and 9 are perspective and exploded views of the case 2B of the door roller 1B according to the third embodiment. In the third embodiment, the notch 62B has a first notch 621 and a second notch 622. The first notch 621 is formed at a position that straddles the boundary line 63 between the first side portion 211B and the first end portion 231B. The second notch 622 is formed on the first side portion 211B side of the boundary line 63 and is arranged next to the first notch 621. The second notch 622 is formed as a substantially rectangular shape with the same length as the first notch 621 but a smaller width.
突出部６１Ｂは、第２実施形態と比べて、戸車１の移動方向に沿って外側にさらに長く突出している。突出部６１Ｂは、突出端の先端寄りに、折り曲げ可能な切り込み６１１が形成される。切り込み６１１は、外側に向かって開口したコの字型に形成され、コの字の底面の方を突出部６１Ｂの面から立ち上げるように折り曲げることで係止部６１１ａが形成される。 Compared to the second embodiment, the protruding portion 61B extends further outward along the direction of movement of the door roller 1. A bendable notch 611 is formed near the tip of the protruding end of the protruding portion 61B. The notch 611 is formed in a U-shape that opens outward, and the locking portion 611a is formed by bending the bottom surface of the U-shape upward from the surface of the protruding portion 61B.
図８に示すように、突出部６１Ｂが形成された第２端面部２３２Ｂは、第１端面部２３１Ｂの外側で折り曲げられ、第１端面部２３１Ｂを覆った状態で突出部６１Ｂが第１の切欠き孔６２１に挿入される。第１の切欠き孔６２１及び第２の切欠き孔６２２は並んで配置されているため、突出部６１Ｂの先端側は、第２の切欠き孔６２２の裏側に届くように延びる。突出部６１Ｂの先端側には、切り込み６１１を立ち上げて形成した係止部６１１ａが形成されており、係止部６１１ａが第２の切欠き孔６２２に係止する。第３実施形態によれば、第２端面部２３２Ｂによって第１端面部２３１Ｂを覆った状態で突出部６１Ｂを第１の切欠き孔６２１に挿入するため、覆われた側の第１端面部２３１Ｂが動く自由度が小さくなることに加えて、突出部６１Ｂの先端に形成された係止部６１１ａが、第２の切欠き孔６２２に係止する。このため、第１及び第２実施形態よりもさらに強固にケース２が開くことを防止することが可能になる。 As shown in Figure 8, the second end face portion 232B on which the protrusion 61B is formed is bent on the outside of the first end face portion 231B, and the protrusion 61B is inserted into the first notch hole 621 while covering the first end face portion 231B. Since the first notch hole 621 and the second notch hole 622 are arranged side by side, the tip of the protrusion 61B extends to reach the back side of the second notch hole 622. A locking portion 611a is formed on the tip of the protrusion 61B by raising the notch 611, and the locking portion 611a locks into the second notch hole 622. According to the third embodiment, since the protruding portion 61B is inserted into the first notch hole 621 with the second end face portion 232B covering the first end face portion 231B, the degree of freedom of movement of the covered first end face portion 231B is reduced. Furthermore, the locking portion 611a formed at the tip of the protruding portion 61B engages with the second notch hole 622. Therefore, it becomes possible to prevent the case 2 from opening even more securely than in the first and second embodiments.
突出部６１及び切欠き孔６２は、第１端面部２３１及び第２端面部２３２のいずれに配置されてもよい。突出部及び切欠き孔の形状及び配置は、上記説明した実施形態に限定されない。 The protrusion 61 and the notch 62 may be positioned on either the first end face 231 or the second end face 232. The shape and arrangement of the protrusion and the notch are not limited to the embodiments described above.
内側凸部４２が保持部４の内側へ凸となる形状は、断面視略Ｖ字状に限定されない。内側凸部４２の断面視の形状は、他の形状であってよい。例えば、内側凸部は、保持部４の内側に向かって凸となるように湾曲していてもよく、底部を有する略コの字状に形成されていてもよく、保持部４の内側に位置する底辺が、保持部４の外側に位置する底辺よりも幅が狭い台形に形成されていてもよい。 The shape of the inner protrusion 42, which protrudes inward from the holding portion 4, is not limited to a roughly V-shape in cross-section. The cross-sectional shape of the inner protrusion 42 may be other shapes. For example, the inner protrusion may be curved to protrude inward from the holding portion 4, or it may be formed in a roughly U-shape with a base, or it may be formed in a trapezoidal shape where the base located inside the holding portion 4 is narrower than the base located outside the holding portion 4.
１ 戸車、 ２ ケース、 ３ 車輪、 ６ 開き規制部、 ２１ 側面部、 ２３ 端面部、 ６１ 突出部、 ６２ 切欠き孔、 ６３ 境界線（境界）、 ２３１ 第１端面部、 ２３２ 第２端面部、 ６２１ 第１の切欠き孔、 ６２２ 第２の切欠き孔
1. Door roller, 2. Case, 3. Wheel, 6. Opening restrictor, 21. Side section, 23. End section, 61. Projection, 62. Notch, 63. Boundary line (boundary), 231. First end section, 232. Second end section, 621. First notch, 622. Second notch
Claims (5)
前記車輪を内部に収容し、障子からかかる荷重を受けるケースと、を備え、
前記ケースは、
板材を折り曲げて構成され、前記車輪の側面に配置されて互いに向かい合う一対の側面部と、
前記一対の側面部同士を前記車輪の移動方向の前後のいずれか側で連結し、前記一対の側面部の一方から延出する第１端面部と、前記一対の側面部の他方から延出する第２端面部と、を重ね合わせることで形成される端面部と、
前記一対の側面部のそれぞれが前記ケースの厚さ方向の外側へ開くことを防止する開き規制部と、を有し、
前記開き規制部は、前記第１端面部又は前記第２端面部のいずれか一方に形成され、展開状態で前記車輪の移動方向に沿う方向に突出する突出部と、
前記一対の側面部における前記第１端面部又は前記第２端面部のいずれか他方に配置され、前記側面部と前記端面部との境界の近傍に形成される切欠き孔と、を有し、
前記ケースが折り曲げられた状態で、前記突出部が前記切欠き孔に挿入される、戸車。 Wheels and,
The vehicle comprises a case that houses the aforementioned wheels and receives the load from the shoji screen,
The aforementioned case is,
It is constructed by bending a plate, and has a pair of side parts that are positioned on the side of the wheel and face each other,
The pair of side portions are connected on either the front or rear side in the direction of movement of the wheel, and an end portion is formed by overlapping a first end portion extending from one of the pair of side portions and a second end portion extending from the other of the pair of side portions.
Each of the pair of side portions has an opening restricting portion that prevents it from opening outward in the thickness direction of the case ,
The opening restricting portion is formed on either the first end face portion or the second end face portion and has a projection that protrudes in a direction along the direction of movement of the wheel when extended,
It has a notch hole located on either the first end face or the second end face of the pair of side surfaces, and formed near the boundary between the side surface and the end face.
A door roller in which the case is folded and the protruding portion is inserted into the notched hole.
前記突出部が形成された側が外側に位置するように折り曲げられ、
前記突出部の先端は、前記第２の切欠き孔に係止するように折り曲げられる、請求項１に記載の戸車。 The notch is formed by a first notch that straddles the boundary between the side portion and the end portion, and a second notch that is formed on the side portion side of the boundary, and is bent so that the side on which the protrusion is formed is on the outside.
The door roller according to claim 1 , wherein the tip of the protruding portion is bent so as to engage with the second notch hole.
The door roller according to any one of claims 1 to 4 , wherein the plate material is made of metal.
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5671863U (en) * | 1979-11-09 | 1981-06-13 | ||
| JPS56100961U (en) * | 1979-12-29 | 1981-08-08 | ||
| US4633615A (en) * | 1985-07-08 | 1987-01-06 | Watsco Inc. | Track-inter-locking roller wheel assembly for sliding patio doors |
| JPH09228723A (en) * | 1996-02-28 | 1997-09-02 | Sankyo Alum Ind Co Ltd | Sush |
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