JP4209292B2 - Seat slide device - Google Patents
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- JP4209292B2 JP4209292B2 JP2003320608A JP2003320608A JP4209292B2 JP 4209292 B2 JP4209292 B2 JP 4209292B2 JP 2003320608 A JP2003320608 A JP 2003320608A JP 2003320608 A JP2003320608 A JP 2003320608A JP 4209292 B2 JP4209292 B2 JP 4209292B2
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Description
本発明は、フロア側に設けられるロアレールと、シート側に設けられ、前記ロアレールに移動可能に係合したアッパレールとを備えたシートスライド装置に関する。 The present invention relates to a seat slide device including a lower rail provided on a floor side and an upper rail provided on a seat side and movably engaged with the lower rail.
従来のシートスライド装置の断面を示す図３を用いて説明する。図において、１がフロアＦ側に設けられるロアレール、３がシート側に設けられ、ロアレール１に移動可能に係合するアッパレールである。アッパレール３の断面形状は、フロアＦと略平行な基底部５と、基底部５の一方の側から折曲し、フロアＦと交差する方向に延びる第１側壁部７と、基底部５の他方の側から折曲し、フロアＦと交差する方向に延びる第２側壁部９とを有している。ロアレール１の断面形状は、フロアＦと略平行な基底部１１と、基底部１１の一方の側から折曲し、アッパレール３の第１側壁部７と対向する第３側壁部１３と、基底部１１の他方の側から折曲し、アッパレール３の第２側壁部９と対向する第４側壁部１５とを有している。 A description will be given with reference to FIG. 3 showing a cross section of a conventional seat slide device. In the figure, 1 is a lower rail provided on the floor F side, and 3 is an upper rail provided on the seat side and movably engaged with the lower rail 1. The cross section of the upper rail 3 includes a base part 5 substantially parallel to the floor F, a first side wall part 7 that is bent from one side of the base part 5 and extends in a direction intersecting the floor F, and the other of the base part 5 And a second side wall 9 extending in a direction intersecting with the floor F. The cross-sectional shape of the lower rail 1 includes a base portion 11 substantially parallel to the floor F, a third side wall portion 13 that is bent from one side of the base portion 11 and faces the first side wall portion 7 of the upper rail 3, and a base portion. 11 has a fourth side wall portion 15 that is bent from the other side of the upper rail 3 and faces the second side wall portion 9 of the upper rail 3.
アッパレール３の第１側壁部７には、上から第１支持部１７、第２支持部１９からなり、ロアレール１の第３側壁部１３との間隔が広がるような略く字形の第１ガイド部２１が設けられている。一方、ロアレール１の第３側壁部１３には、第１ガイド部２１の第１支持部と１７略平行な第３支持部２３、第１ガイド部２１の第２支持部１９と略平行な第４支持部からなリ、アッパレール３の第１側壁部７との間隔が広がるような略く字形の第２ガイド部２７が形成されている。 The first side wall portion 7 of the upper rail 3 is composed of a first support portion 17 and a second support portion 19 from the top, and has a generally rectangular first guide portion that increases the distance from the third side wall portion 13 of the lower rail 1. 21 is provided. On the other hand, the third side wall portion 13 of the lower rail 1 has a third support portion 17 substantially parallel to the first support portion of the first guide portion 21 and a second support portion 19 substantially parallel to the second support portion 19 of the first guide portion 21. A substantially rectangular second guide portion 27 is formed so that the distance from the first side wall portion 7 of the upper rail 3 is increased.
アッパレール３の第２側壁部９には、上から第５支持部２９、第６支持部３１からなり、ロアレール１の第４側壁部１５との間隔が広がるような略く字形の第３ガイド部３３が設けられている。一方、ロアレール１の第４側壁部１５には、第３ガイド部３３の第５支持部２９と略平行な第７支持部３５、第３ガイド部３３の第６支持部３１と略平行な第８支持部３７からなリ、アッパレール３の第２側壁部９との間隔が広がるような略く字形の第４ガイド部３９が設けられている。 The second side wall portion 9 of the upper rail 3 is composed of a fifth support portion 29 and a sixth support portion 31 from the top, and is a substantially rectangular third guide portion that increases the distance from the fourth side wall portion 15 of the lower rail 1. 33 is provided. On the other hand, the fourth side wall 15 of the lower rail 1 has a seventh support 35 that is substantially parallel to the fifth support 29 of the third guide 33 and a sixth support 31 that is substantially parallel to the sixth support 31 of the third guide 33. A substantially guide-shaped fourth guide portion 39 is provided so that the distance from the second support portion 37 and the second side wall portion 9 of the upper rail 3 is widened.
第１ガイド部２１と、第２ガイド部２７との空間に、第１支持部１７、第２支持部１９、第３支持部２３、第４支持部２５が当接可能なボール４１が設けられている。又、第３ガイド部３３と、第４ガイド部３９との空間に、第５支持部２９、第６支持部３１、第７支持部３５、第８支持部３７が当接可能なボール４３が設けられ、これらボール４１、ボール４３が転動することにより、アッパレール３はロアレール１に対してスムーズに移動するようになっている（例えば、特許文献１参照。）。
図３に示す構成のシートスライド装置では、第１ガイド部２１の第１支持部１７とボール４１との接点Ｔ１での法線Ｈ１と、鉛直線Ｓとのなす角をθ１、第１ガイド部２１の第２支持部１９とボール４１との接点Ｔ２での法線Ｈ２と、鉛直線Ｓとのなす角をθ２、第２ガイド部２７の第３支持部２３とボール４１との接点Ｔ３での法線Ｈ３と、鉛直線Ｓとのなす角をθ３、第２ガイド部２７の第４支持部２５とボール４１との接点Ｔ４での法線Ｈ４と、鉛直線Ｓとのなす角をθ４、第３ガイド部３３の第５支持部２９とボール４３との接点Ｔ５での法線Ｈ５と、鉛直線Ｓとのなす角をθ５、３ガイド部３３の第６支持部３１とボール４３との接点Ｔ６での法線Ｈ６と、鉛直線Ｓとのなす角をθ６、第４ガイド部３９の第７支持部３５とボール４３との接点Ｔ７での法線Ｈ７と、鉛直線Ｓとのなす角をθ７、第４ガイド部３９の第８支持部３７とボール４３との接点Ｔ８での法線Ｈ８と、鉛直線Ｓとのなす角をθ８とした場合、θ１≒θ２≒θ３≒θ４≒θ５≒θ６≒θ７≒θ８≒４５°である。即ち、ボール４１と第１支持部１７、第２支持部１９、第３支持部２３、第４支持部２５との当たり、ボール４３と第５支持部２９、第６支持部３１、第７支持部３５、第８支持部３７との当たりは全て均等な当たりである。 In the seat slide device having the configuration shown in FIG. 3, the angle between the normal H1 at the contact T1 between the first support portion 17 of the first guide portion 21 and the ball 41 and the vertical line S is θ1, and the first guide portion The angle between the normal line H2 at the contact point T2 between the second support part 19 and the ball 41 and the vertical line S is θ2, and the contact point T3 between the third support part 23 and the ball 41 at the second guide part 27 is The angle formed between the normal line H3 and the vertical line S is θ3, and the angle formed between the normal line H4 at the contact point T4 between the fourth support portion 25 of the second guide portion 27 and the ball 41 and the vertical line S is θ4. The angle formed between the normal line H5 at the contact point T5 between the fifth support portion 29 of the third guide portion 33 and the ball 43 and the vertical line S is θ5, and the sixth support portion 31 of the guide portion 33 and the ball 43 are The angle between the normal H6 at the contact T6 and the vertical line S is θ6, the seventh support portion 35 of the fourth guide portion 39 and the ball 43 The angle between the normal line H7 at the contact point T7 and the vertical line S is θ7, and the normal line H8 at the contact point T8 between the eighth support part 37 of the fourth guide part 39 and the ball 43 and the vertical line S When the formed angle is θ8, θ1≈θ2≈θ3≈θ4≈θ5≈θ6≈θ7≈θ8≈45 °. That is, when the ball 41 hits the first support portion 17, the second support portion 19, the third support portion 23, and the fourth support portion 25, the ball 43, the fifth support portion 29, the sixth support portion 31, and the seventh support portion. The hits with the part 35 and the eighth support part 37 are all equal hits.
更に、ボール４１と第１支持部１７、第２支持部１９、第３支持部２３、第４支持部２５とはガタのない設定となっている。同様に、ボール４３と第５支持部２９、第６支持部３１、第７支持部３５、第８支持部３７ともガタのない設定となっている。しかし、ロアレール１０１、アッパレール１０３、ボール４１、ボール４３の製造誤差があると、ガタが発生したり、摺動抵抗が増す問題点がある。 Further, the ball 41, the first support portion 17, the second support portion 19, the third support portion 23, and the fourth support portion 25 are set to be free from backlash. Similarly, the ball 43, the fifth support portion 29, the sixth support portion 31, the seventh support portion 35, and the eighth support portion 37 are set to be free from backlash. However, if there is a manufacturing error in the lower rail 101, the upper rail 103, the ball 41, and the ball 43, there is a problem that play occurs and sliding resistance increases.
本発明は、上記問題点に鑑みてなされたもので、その課題は、摺動抵抗が小さく、又、寸法のバラツキが生じても摺動抵抗が増加しないシートスライド装置を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a seat slide device that has a small sliding resistance and that does not increase the sliding resistance even when dimensional variation occurs.
上記課題を解決する請求項１に係る発明は、フロア側に設けられるロアレールと、シート側に設けられ、前記ロアレールに移動可能に係合したアッパレールとを備えたシートスライド装置において、前記アッパレールの断面形状は、フロアと交差する方向に延びる第１側壁部と、第２側壁部とを有し、前記ロアレールの断面形状は、前記アッパレールの第１側壁部、第２側壁部と略平行な第３側壁部と第４側壁部とを有し、前記アッパレールの第１側壁部に、上から第１支持部、第２支持部からなり、前記ロアレールの第３側壁部との間隔が広がるような略く字形の第１ガイド部を設け、前記ロアレールの第３側壁部に、前記第１ガイド部の第１支持部と略平行な第３支持部、前記第１ガイド部の第２支持部と略平行な第４支持部からなリ、前記アッパレールの第１側壁部との間隔が広がるような略く字形の第２ガイド部を設け、前記アッパレールの第２側壁部に、上から第５支持部、第６支持部からなり、前記ロアレールの第４側壁部との間隔が広がるような略く字形の第３ガイド部を設け、前記ロアレールの第４側壁部に、前記第３ガイド部の第５支持部と略平行な第７支持部、前記第３ガイド部の第６支持部と略平行な第８支持部からなリ、前記アッパレールの第２側壁部との間隔が広がるような略く字形の第４ガイド部を設け、前記第１ガイド部と、前記第２ガイド部との空間に、前記第１〜第４支持部が当接可能なボールを設け、前記第３ガイド部と、前記第４ガイド部との空間に、前記第５〜第８支持部が当接可能なボールを設け、前記第１支持部と前記ボールとの接点での法線と鉛直線とのなす角が、前記第４支持部と前記ボールとの接点での法線と鉛直線とのなす角より小さく設定され、前記第５支持部と前記ボールとの接点での法線と鉛直線とのなす角が、前記第８支持部と前記ボールとの接点での法線と鉛直線とのなす角より小さく設定されていることを特徴とするシートスライド装置である。 The invention according to claim 1, which solves the above problem, is a seat slide device comprising a lower rail provided on the floor side and an upper rail provided on the seat side and movably engaged with the lower rail, and a cross section of the upper rail. The shape includes a first side wall portion extending in a direction intersecting the floor and a second side wall portion, and a cross-sectional shape of the lower rail is a third substantially parallel to the first side wall portion and the second side wall portion of the upper rail. It has a side wall portion and a fourth side wall portion. The first side wall portion of the upper rail is composed of a first support portion and a second support portion from above, and the distance from the third side wall portion of the lower rail is increased. A rectangular first guide part is provided, and a third support part substantially parallel to the first support part of the first guide part and a second support part of the first guide part are provided on the third side wall part of the lower rail. From the parallel fourth support, A substantially rectangular second guide portion is provided so as to increase a distance from the first side wall portion of the upper rail, and the second rail side portion of the upper rail includes a fifth support portion and a sixth support portion from above, and the lower rail A substantially guide-shaped third guide portion is provided so as to increase a distance from the fourth side wall portion, and a seventh support portion substantially parallel to the fifth support portion of the third guide portion is provided on the fourth side wall portion of the lower rail. A fourth guide portion having a substantially square shape that is formed by an eighth support portion that is substantially parallel to the sixth support portion of the third guide portion and that widens the distance from the second side wall portion of the upper rail; A ball capable of contacting the first to fourth support portions is provided in a space between one guide portion and the second guide portion, and the space between the third guide portion and the fourth guide portion is A ball on which the fifth to eighth support portions can come into contact is provided, and a contact between the first support portion and the ball is provided. The angle formed between the normal line and the vertical line is set smaller than the angle formed between the normal line and the vertical line at the contact point between the fourth support portion and the ball, and the fifth support portion and the ball An angle formed between a normal line at a contact point and a vertical line is set to be smaller than an angle formed between a normal line and a vertical line at the contact point between the eighth support portion and the ball. It is.
請求項１に係る発明では、アッパレールからの荷重は、アッパレールの第１ガイド部の第１支持部→ボール→ロアレールの第２ガイド部の第３支持部、アッパレールの第３ガイド部の第５支持部→ボール→ロアレールの第４ガイド部の第７支持部を介してロアレールに伝達される。 In the invention according to claim 1, the load from the upper rail is determined by the first support portion of the first guide portion of the upper rail → the ball → the third support portion of the second guide portion of the lower rail and the fifth support portion of the third guide portion of the upper rail. It is transmitted to the lower rail via the seventh support part of the fourth guide part of the part → ball → lower rail.
請求項２に係る発明は、前記アッパレールは、前記ロアレールと係合する前の自然状態では、第１側壁部と第２側壁部とが前記フロア方向に行くほど、両者の間隔が広がる「ハ」字状態となるように設定されていることを特徴とする請求項１記載のシートスライド装置である。 According to a second aspect of the present invention, in the natural state before the upper rail engages with the lower rail, the distance between the first side wall and the second side wall increases toward the floor in the natural state. The seat slide device according to claim 1, wherein the seat slide device is set to be in a letter state.
請求項２に係る発明では、アッパレールとロアレールとを組み付けると、アッパレールの第１側壁部と第２側壁部とが弾性変形する。 In the invention according to claim 2, when the upper rail and the lower rail are assembled, the first side wall and the second side wall of the upper rail are elastically deformed.
請求項３に係る発明は、前記ロアレールは、前記アッパレールと係合する前の自然状態では、第３側壁部と第４側壁部とが、前記フロア方向に行くほど、両者の間隔が広がる「ハ」字状態となるように設定されていることを特徴とする請求項１記載のシートスライド装置である。 According to a third aspect of the present invention, in the natural state before the lower rail is engaged with the upper rail, the distance between the third side wall portion and the fourth side wall portion increases toward the floor. The seat slide device according to claim 1, wherein the seat slide device is set so as to be in a “character” state.
請求項３に係る発明では、アッパレールとロアレールとを組み付けると、ロアレールの第３側壁部と第４側壁部とが弾性変形する。 In the invention which concerns on Claim 3, if an upper rail and a lower rail are assembled | attached, the 3rd side wall part and 4th side wall part of a lower rail will elastically deform.
請求項１に係る発明によれば、前記第１支持部と前記ボールとの接点での法線と鉛直線とのなす角が、前記第４支持部と前記ボールとの接点での法線と鉛直線とのなす角より小さく設定され、前記第５支持部と前記ボールとの接点での法線と鉛直線とのなす角が、前記第８支持部と前記ボールとの接点での法線と鉛直線とのなす角より小さく設定されていることにより、ロアレールの第２ガイド部の第３支持部、第４ガイド部の第７支持部に対して垂直な方向に作用するアッパレールからの荷重成分が大きくなるので、アッパレールとロアレールとの上下方向のガタが少なくなる。 According to the first aspect of the invention, the angle formed between the normal line at the contact point between the first support part and the ball and the vertical line is the normal line at the contact point between the fourth support part and the ball. The angle formed between the normal line at the contact point between the fifth support portion and the ball and the vertical line is set smaller than the angle formed between the vertical line and the normal line at the contact point between the eighth support portion and the ball. The load from the upper rail acting in the direction perpendicular to the third support portion of the second guide portion of the lower rail and the seventh support portion of the fourth guide portion by being set smaller than the angle formed by the vertical line and the vertical line Since the component becomes large, the vertical play between the upper rail and the lower rail is reduced.
又、ボールに作用するアッパレールからの荷重のうち、ロアレールの第２ガイド部の第３支持部、第４ガイド部の第７支持部と平行な方向の分力が力が小さくなるので、摺動抵抗のムラが少なくなる。更に、ロアレールの第２ガイド部の第３支持部、第４ガイド部の第７支持部に対して垂直な方向に作用するアッパレールからの荷重成分が大きくなる。よって、ボールが空回りすることなく回転し、スムーズなアッパレールの移動を得ることができる。 Further, of the load from the upper rail acting on the ball, the component force in the direction parallel to the third support portion of the second guide portion of the lower rail and the seventh support portion of the fourth guide portion is reduced, so that sliding Uneven resistance is reduced. Furthermore, the load component from the upper rail acting in a direction perpendicular to the third support portion of the second guide portion of the lower rail and the seventh support portion of the fourth guide portion is increased. Therefore, the ball rotates without idling and a smooth upper rail movement can be obtained.
請求項２に係る発明によれば、前記アッパレールは、前記ロアレールと係合する前の自然状態では、第１側壁部と第２側壁部とが前記フロア方向に行くほど、両者の間隔が広がる「ハ」字状態となるように設定されていることにより、アッパレールとロアレールとを組み付けると、アッパレールの第１側壁部と第２側壁部とが弾性変形する。その弾性反発力により、アッパレールの第１ガイド部、第３ガイド部がボールをロアレールの第２ガイド部、第４ガイド部に押し付けるので、ガタがなくなる。 According to the invention which concerns on Claim 2, the space | interval of both becomes large, so that the said 1st side wall part and a 2nd side wall part go to the said floor direction in the natural state before engaging with the said lower rail. When the upper rail and the lower rail are assembled together, the first side wall and the second side wall of the upper rail are elastically deformed. Due to the elastic repulsive force, the first guide portion and the third guide portion of the upper rail press the ball against the second guide portion and the fourth guide portion of the lower rail.
請求項３に係る発明によれば、前記ロアレールは、前記アッパレールと係合する前の自然状態では、第３側壁部と第４側壁部とが、前記フロア方向に行くほど、両者の間隔が広がる「ハ」字状態となるように設定されていることにより、アッパレールとロアレールとを組み付けると、ロアレールの第３側壁部と第４側壁部とが弾性変形する。その弾性反発力により、ロアレールの第２ガイド部、第４ガイド部がボールをアッパレールの第１ガイド部、第３ガイド部に押し付けるので、ガタがなくなる。 According to the invention of claim 3, wherein the lower rail is in the natural state prior to engagement with the upper rail, a third side wall and the fourth side wall portion is going higher, spread distance between them in the floor direction When the upper rail and the lower rail are assembled, the third side wall portion and the fourth side wall portion of the lower rail are elastically deformed by being set to be in the “C” state. The elastic repulsive force causes the second guide portion and the fourth guide portion of the lower rail to press the ball against the first guide portion and the third guide portion of the upper rail, thereby eliminating backlash.
以下、図面を用いて本発明を実施するための最良の形態を説明する。最初に、図２を用いて、本形態例のシートスライド装置の全体構成を説明する。一般に、シートスライド装置は、１つにシートに対して、１組設けられるものであるが、構成は略同じなので、一方のシートトラック装置で説明する。 Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Initially, the whole structure of the seat slide apparatus of this embodiment is demonstrated using FIG. In general, one set of seat slide devices is provided for one seat, but the configuration is substantially the same, so only one seat track device will be described.
図において、１０１はフロアＦ側にフロントブラケット９５、リアブラケット９７を介して設けられるロアレール、１０３はシート側に設けられ、ロアレール１０１に移動可能に係合するアッパレールである。ロアレール１０１の側面には、複数のロック穴１０５がその長手方向に沿って形成されている。一方、アッパレール１０３には、アッパレール１０３の長手方向に沿ってクランク状のロッド１０２が回転可能に設けられている。ロッド１０２には、ロックレバー１０７が取付けられ、このロックレバー１０７の回転端部側はロアレール１０１のロック穴１０５に係脱可能となっている。更に、一端部がアッパレール１０３に、他端部がロックレバー１０７に係止されるトーションスプリング１０９によりロックレバー１０７はロック穴１０５に係合する方向（ロック方向）に付勢されている。 In the figure, 101 is a lower rail provided on the floor F via a front bracket 95 and a rear bracket 97, and 103 is an upper rail provided on the seat side and movably engaged with the lower rail 101. A plurality of lock holes 105 are formed on the side surface of the lower rail 101 along the longitudinal direction thereof. On the other hand, a crank-shaped rod 102 is rotatably provided on the upper rail 103 along the longitudinal direction of the upper rail 103. A lock lever 107 is attached to the rod 102, and the rotation end portion side of the lock lever 107 can be engaged with and disengaged from the lock hole 105 of the lower rail 101. Further, the lock lever 107 is urged in a direction (lock direction) in which the lock lever 107 is engaged with the lock hole 105 by a torsion spring 109 having one end engaged with the upper rail 103 and the other end engaged with the lock lever 107.
アッパレール１０３には、ピン１１０を用いてオープンブラケット１１１が回転可能に設けられている。このオープンブラケット１１１は、回転することにより、ロッド１０２のクランク部１０２ａを押して、ロックレバー１０７をロック穴１０５から離脱する方向（アンロック方向）に駆動可能となっている。又、ピン１１０に中間部が巻回され、一端部がアッパレール１０３に、他端部がオープンブラケット１１１に係止されるスプリング１１３により、オープンブラケット１１１はロッド１０２のクランク部１０２ａから離れる方向に付勢されている。そして、オープンブラケット１１１にはループハンドル１１５の一端部が取付けられ、このループハンドル１１５の他端部は他方のシートトラック装置のオープンブラケットに取付けられている。 An open bracket 111 is rotatably provided on the upper rail 103 using pins 110. By rotating the open bracket 111, the crank portion 102a of the rod 102 is pushed, and the lock lever 107 can be driven in a direction (unlock direction) to be detached from the lock hole 105. Further, the open bracket 111 is attached in a direction away from the crank portion 102 a of the rod 102 by a spring 113 that is wound around the pin 110, one end is engaged with the upper rail 103, and the other end is engaged with the open bracket 111. It is energized. One end of a loop handle 115 is attached to the open bracket 111, and the other end of the loop handle 115 is attached to the open bracket of the other seat track apparatus.
次に、上記構成の作動を説明する。ループハンドル１１５を操作していない状態では、スプリング１１３の付勢力により、オープンブラケット１１１はロッド１０２のクランク部１０２ａより離れた位置にあり、又、トーションスプリング１０９の付勢力により、ロックレバー１０７はロアレール１０１のロック穴１０５に係合し、アッパレール１０３のロアレール１０１に対する移動は禁止されたロック状態にある。 Next, the operation of the above configuration will be described. When the loop handle 115 is not operated, the open bracket 111 is located away from the crank portion 102a of the rod 102 by the biasing force of the spring 113, and the lock lever 107 is moved to the lower rail by the biasing force of the torsion spring 109. The upper rail 103 is in a locked state in which the upper rail 103 is prohibited from moving with respect to the lower rail 101.
ここで、ループハンドル１１５をスプリング１１３の付勢力に抗して、矢印Ｉ方向に引き上げると、オープンブラケット１１１がロッド１０２のクランク部１０２ａを押し、トーションスプリング１０９の付勢力に抗してロックレバー１０７がロアレール１０１のロック穴１０５から離脱して、アッパレール１０３のロアレール１０１に対する移動が可能となるアンロック状態となる。ここで、アッパレール１０３をロアレール１０１に対して移動させ、所望のポジションを得たならば、ループハンドル１１５への操作力を解除する。すると、スプリング１１３の付勢力により、オープンブラケット１１１はロッド１０２のクランク部１０２ａより離れた位置まで戻り、又、トーションスプリング１０９の付勢力により、ロックレバー１０７はロアレール１０１のロック穴１０５に再び係合し、アッパレール１０３のロアレール１０１に対する移動は禁止されたロック状態に復帰する。 Here, when the loop handle 115 is pulled up in the direction of arrow I against the urging force of the spring 113, the open bracket 111 pushes the crank portion 102 a of the rod 102 and the lock lever 107 against the urging force of the torsion spring 109. Is disengaged from the lock hole 105 of the lower rail 101, and the unlocked state in which the upper rail 103 can move relative to the lower rail 101 is achieved. Here, when the upper rail 103 is moved with respect to the lower rail 101 and a desired position is obtained, the operating force to the loop handle 115 is released. Then, the open bracket 111 returns to a position away from the crank portion 102 a of the rod 102 due to the biasing force of the spring 113, and the lock lever 107 engages with the lock hole 105 of the lower rail 101 again due to the biasing force of the torsion spring 109. Then, the movement of the upper rail 103 with respect to the lower rail 101 returns to the prohibited locked state.
次に、図２の切断線Ａ−Ａでの断面図である図１を用いて、ロアレール１０１、アッパレール１０３の断面形状を説明する。 Next, cross-sectional shapes of the lower rail 101 and the upper rail 103 will be described with reference to FIG. 1 which is a cross-sectional view taken along the line AA in FIG.
アッパレール１０３の断面形状は、フロアＦと略平行な基底部２０５と、基底部２０５の一方の側から折曲し、フロアＦ方向に向かって延びる第１垂下部２０７と、基底部２０５の他方の側から折曲し、フロアＦ方向に向かって延びる第２垂下部２０９とを有している。更に、第１垂下部２０７の下端から折曲しフロアＦから離れる方向で、フロアＦと交差する方向に延びる第１側壁部２１１と、第２垂下部２０９の下端から折曲しフロアＦから離れる方向で、フロアＦと交差する方向に延びる第２側壁部２１３とを有している。 The cross-sectional shape of the upper rail 103 includes a base portion 205 substantially parallel to the floor F, a first hanging portion 207 that is bent from one side of the base portion 205 and extends toward the floor F, and the other portion of the base portion 205. It has a second hanging portion 209 that is bent from the side and extends toward the floor F direction. Further, the first side wall portion 211 extending in the direction intersecting the floor F in a direction away from the floor F and bent from the lower end of the first hanging portion 207 and the lower end of the second hanging portion 209 are bent away from the floor F. And a second side wall portion 213 extending in a direction crossing the floor F.
一方、ロアレール１０１の断面形状は、フロアＦと略平行な基底部３１１と、基底部３１１の一方の側から折曲し、アッパレール１０３の第１側壁部２１１と対向する第３側壁部３１３と、基底部３１１の他方の側から折曲し、アッパレール１０３の第２側壁部２１３と対向する第４側壁部３１５とを有している。更に、第３側壁部３１３の上端から折曲し、アッパレール１０３の第１側壁部２１１の上端部を覆い、アッパレール１０３がロアレール１０１から剥離する方向の荷重が入力された場合、アッパレール１０３の第１側壁部２１１が当接してアッパレール１０３のロアレール１０１からの剥離を防止する第１剥離防止部３１７と、第４側壁部３１５の上端から折曲し、アッパレール１０３の第２側壁部２１３の上端部を覆い、アッパレール１０３がロアレール１０１から剥離する方向の荷重が入力された場合、アッパレール１０３の第２側壁部２１３が当接してアッパレール１０３のロアレール１０１からの剥離を防止する第２剥離防止部３１９とを有している。 On the other hand, the lower rail 101 has a cross-sectional shape of a base portion 311 substantially parallel to the floor F, a third side wall portion 313 that is bent from one side of the base portion 311 and faces the first side wall portion 211 of the upper rail 103, It has a fourth side wall portion 315 that is bent from the other side of the base portion 311 and faces the second side wall portion 213 of the upper rail 103. Further, when a load is applied that is bent from the upper end of the third side wall portion 313 and covers the upper end portion of the first side wall portion 211 of the upper rail 103 so that the upper rail 103 is peeled from the lower rail 101, the first rail of the upper rail 103 is input. A first separation preventing portion 317 that prevents the separation of the upper rail 103 from the lower rail 101 by contact with the sidewall portion 211 and a top end portion of the second sidewall portion 213 of the upper rail 103 are bent from the upper end of the fourth sidewall portion 315. When the load in the direction in which the upper rail 103 is peeled from the lower rail 101 is input, the second side wall portion 213 of the upper rail 103 comes into contact with the second separation preventing portion 319 to prevent the upper rail 103 from being separated from the lower rail 101. Have.
アッパレール１０３の第１側壁部２１１には、上から第１支持部２１５、第２支持部２１７からなり、ロアレール１０１の第３側壁部３１３との間隔が広がるような略く字形の第１ガイド部２１９が設けられている。一方、ロアレール１０１の第３側壁部３１３には、第１ガイド部２１９の第１支持部２１５と略平行な第３支持部３２１、第１ガイド部２１９の第２支持部２１７と略平行な第４支持部３２３からなリ、アッパレール１０３の第１側壁部２１１との間隔が広がるような略く字形の第２ガイド部３２５が形成されている。 The first side wall portion 211 of the upper rail 103 is composed of a first support portion 215 and a second support portion 217 from the top, and has a generally rectangular first guide portion that widens the distance from the third side wall portion 313 of the lower rail 101. 219 is provided. On the other hand, the third side wall portion 313 of the lower rail 101 has a third support portion 321 substantially parallel to the first support portion 215 of the first guide portion 219 and a second support portion 217 substantially parallel to the second support portion 217 of the first guide portion 219. A substantially rectangular second guide portion 325 is formed so that the distance from the first support portion 323 to the first side wall portion 211 of the upper rail 103 is widened.
アッパレール１０３の第２側壁部２１３は、上から第５支持部２２１、第６支持部２２３からなり、ロアレール１０１の第４側壁部３１５との間隔が広がるような略く字形の第３ガイド部２２５が設けられている。一方、ロアレール１０１の第４側壁部３１５には、第３ガイド部２２５の第５支持部２２１と略平行な第７支持部３２７、第３ガイド部２２５の第６支持部２２３と略平行な第８支持部３２９からなリ、アッパレール１０３の第２側壁部２１３との間隔が広がるような略く字形の第４ガイド部３３１が設けられている。 The second side wall portion 213 of the upper rail 103 is composed of a fifth support portion 221 and a sixth support portion 223 from the top, and a substantially guide-shaped third guide portion 225 that increases the distance from the fourth side wall portion 315 of the lower rail 101. Is provided. On the other hand, the fourth side wall 315 of the lower rail 101 has a seventh support 327 substantially parallel to the fifth support 221 of the third guide 225 and a sixth support 223 substantially parallel to the sixth support 223 of the third guide 225. A substantially guide-shaped fourth guide portion 331 is provided so that the distance from the second support portion 329 to the second side wall portion 213 of the upper rail 103 is widened.
第１ガイド部２１９と、第２ガイド部３２５との空間に、第１支持部２１５、第２支持部２１７、第３支持部３２１、第４支持部３２３が当接可能なボール１４１が設けられている。又、第３ガイド部２２５と、第４ガイド部３３１との空間に、第５支持部２２１、第６支持部２２３、第７支持部３２７、第８支持部３２９が当接可能なボール１４３が設けられ、これらボール１４１、ボール１４３が転動することにより、アッパレール１０３はロアレール１０１に対してスムーズに移動するようになっている。 In the space between the first guide part 219 and the second guide part 325, a ball 141 with which the first support part 215, the second support part 217, the third support part 321 and the fourth support part 323 can come into contact is provided. ing. A ball 143 with which the fifth support portion 221, the sixth support portion 223, the seventh support portion 327, and the eighth support portion 329 can come into contact with the space between the third guide portion 225 and the fourth guide portion 331 is provided. The upper rail 103 moves smoothly with respect to the lower rail 101 by rolling the balls 141 and 143.
そして、本形態例では、第１支持部２１５とボール１４１との接点Ｔ１での法線Ｈ１と鉛直線Ｓとのなす角θ１が、第４支持部３２３とボール１４１との接点Ｔ４での法線Ｈ４と鉛直線Ｓとのなす角θ４より小さく設定され、第５支持部２２１とボール１４３との接点Ｔ５での法線Ｈ５と鉛直線Ｓとのなす角θ５が、第８支持部３２９とボール１４３との接点Ｔ８での法線Ｈ８と鉛直線Ｓとのなす角θ８より小さく設定されている。 In this embodiment, the angle θ1 formed by the normal line H1 and the vertical line S at the contact point T1 between the first support part 215 and the ball 141 is the modulus at the contact point T4 between the fourth support part 323 and the ball 141. The angle θ5 between the normal line H5 and the vertical line S at the contact point T5 between the fifth support portion 221 and the ball 143 is set to be smaller than the angle θ4 formed between the line H4 and the vertical line S. The angle θ8 is set smaller than the angle θ8 formed by the normal line H8 and the vertical line S at the contact point T8 with the ball 143.
又、アッパレール１０３の第１ガイド部２１９の第２支持部２１７はロアレール１０１の第２ガイド部３２５の第４支持部３２３と略平行なので、第２支持部２１７とボール１４１との接点Ｔ２での法線Ｈ２と鉛直線Ｓとのなす角θ２≒θ４である。ロアレール１０１の第２ガイド部３２５の第３支持部３２１はアッパレール１０３の第１ガイド部２１９の第１支持部２１５と略平行なので、第３支持部３２１とボール１４１との接点Ｔ３での法線Ｈ３と鉛直線Ｓとのなす角θ３≒θ１である。 In addition, since the second support portion 217 of the first guide portion 219 of the upper rail 103 is substantially parallel to the fourth support portion 323 of the second guide portion 325 of the lower rail 101, the contact at the contact T2 between the second support portion 217 and the ball 141 is achieved. The angle θ2≈θ4 formed between the normal H2 and the vertical line S. Since the third support portion 321 of the second guide portion 325 of the lower rail 101 is substantially parallel to the first support portion 215 of the first guide portion 219 of the upper rail 103, the normal line at the contact point T3 between the third support portion 321 and the ball 141 is provided. An angle θ3≈θ1 formed by H3 and the vertical line S.
アッパレール１０３の第３ガイド部２２５の第６支持部２２３はロアレール１０１の第４ガイド部３３１の第８支持部３２９と略平行なので、第６支持部２２３とボール１４３との接点Ｔ６での法線Ｈ６と鉛直線Ｓとのなす角θ６≒θ８である。ロアレール１０１の第４ガイド部３３１の第７支持部３２７はアッパレール１０３の第３ガイド部２２５の第５支持部２２１と略平行なので、第７支持部３２７とボール１４３との接点Ｔ７での法線Ｈ７と鉛直線Ｓとのなす角θ７≒θ５である。 Since the sixth support portion 223 of the third guide portion 225 of the upper rail 103 is substantially parallel to the eighth support portion 329 of the fourth guide portion 331 of the lower rail 101, the normal line at the contact point T6 between the sixth support portion 223 and the ball 143 is provided. The angle θ6≈θ8 formed by H6 and the vertical line S. Since the seventh support portion 327 of the fourth guide portion 331 of the lower rail 101 is substantially parallel to the fifth support portion 221 of the third guide portion 225 of the upper rail 103, the normal line at the contact point T7 between the seventh support portion 327 and the ball 143 is provided. The angle θ7≈θ5 formed by H7 and the vertical line S.
そして、アッパレール１０３は組付け前の自然状態では、図１の二点鎖線で示すように、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３とがフロアＦ方向に行くほど、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３との間隔が広がる「ハ」字状態となるように設定され、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３とが接近するように弾性変形させた状態で、ロアレール１０１に組み付けるようにした。 In the natural state prior to assembly, the upper rail 103 has a first hanging portion 207, a first side wall portion 211, a second hanging portion 209, and a second side wall portion 213, as shown by a two-dot chain line in FIG. The first drooping portion 207 is set so that the distance between the first drooping portion 207, the first side wall portion 211 and the second drooping portion 209, and the second side wall portion 213 increases in the F direction. 207, the first side wall part 211, the second hanging part 209, and the second side wall part 213 are elastically deformed so as to approach each other, and are assembled to the lower rail 101.
このような構成によれば、以下のような効果を得ることができる。
（１）第１支持部２１５とボール１４１との接点Ｔ１での法線Ｈ１と鉛直線Ｓとのなす角θ１が、第４支持部３２３とボール１４１との接点Ｔ４での法線Ｈ４と鉛直線Ｓとのなす角θ４より小さく設定され、第５支持部２２１とボール１４３との接点Ｔ５での法線Ｈ５と鉛直線Ｓとのなす角が、第８支持部３２９とボール１４３との接点Ｔ８での法線Ｈ８と鉛直線Ｓとのなす角θ８より小さく設定されていることにより、ロアレール１０１の第２ガイド部３２５の第３支持部３２１、第４ガイド部３３１の第７支持部３２７に対して垂直な方向に作用するアッパレール１０３からの荷重成分が大きくなるので、アッパレール１０３とロアレール１０１との上下方向のガタが少なくなる。
According to such a configuration, the following effects can be obtained.
(1) The angle θ1 formed between the normal line H1 at the contact point T1 between the first support part 215 and the ball 141 and the vertical line S is perpendicular to the normal line H4 at the contact point T4 between the fourth support part 323 and the ball 141. The angle formed between the normal line H5 and the vertical line S at the contact point T5 between the fifth support portion 221 and the ball 143 is set to be smaller than the angle θ4 formed between the line S and the contact point between the eighth support portion 329 and the ball 143. By setting the angle smaller than the angle θ8 formed by the normal line H8 and the vertical line S at T8, the third support part 321 of the second guide part 325 and the seventh support part 327 of the fourth guide part 331 of the lower rail 101 are set. Since the load component from the upper rail 103 acting in the direction perpendicular to the direction becomes large, the vertical play between the upper rail 103 and the lower rail 101 is reduced.
又、ボール１４１、ボール１４３に作用するアッパレール１０３からの荷重のうち、ロアレール１０１の第２ガイド部３２５の第３支持部３２１、第４ガイド部３３１の第７支持部３２７と平行な方向の分力が小さくなるので、摺動抵抗のムラが少なくなる。 Of the load from the upper rail 103 acting on the ball 141 and the ball 143, the load in the direction parallel to the third support portion 321 of the second guide portion 325 and the seventh support portion 327 of the fourth guide portion 331 of the lower rail 101. Since the force becomes smaller, the unevenness of sliding resistance is reduced.
更に、ロアレール１０１の第２ガイド部３２５の第３支持部３２１、第４ガイド部３３１の第７支持部３２７に対して垂直な方向に作用するアッパレール１０３からの荷重成分が大きくなる。よって、ボール１４１、ボール１４３が空回りすることなく回転し、スムーズなアッパレール１０３の移動を得ることができる。
（２）アッパレール１０３は組付け前の自然状態では、図１の二点鎖線で示すように、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３とがフロアＦ方向に行くほど、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３との間隔が広がる「ハ」字状態となるように設定され、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３とが接近するように弾性変形させた状態で、ロアレール１０１に組み付けるようにしたことにより、組み付け後、第１垂下部２０７、第１側壁部２１１の弾性反発力により、ボール１４１と、ロアレール１０１の第２ガイド部３２５の第４支持部３２３、アッパレール１０３の第１ガイド部２１９の第２支持部２１７とのガタがなくなる。同様に、組み付け後、第２垂下部２０９、第２側壁部２１３の弾性反発力により、ボール１４３と、ロアレール１０１の第４ガイド部３３１の第８支持部３２９、アッパレール１０３の第３ガイド部２２５の第６支持部２２３とのガタがなくなる。
Furthermore, the load component from the upper rail 103 acting in the direction perpendicular to the third support portion 321 of the second guide portion 325 of the lower rail 101 and the seventh support portion 327 of the fourth guide portion 331 becomes large. Therefore, the ball 141 and the ball 143 rotate without spinning, and a smooth movement of the upper rail 103 can be obtained.
(2) In the natural state before assembly, the upper rail 103 has a first hanging portion 207, a first side wall portion 211, a second hanging portion 209, and a second side wall portion 213 as shown by a two-dot chain line in FIG. The first drooping section 207, the first drooping portion 207, the first side wall portion 211 and the second drooping portion 209, and the second side wall portion 213 are set to be in a “C” -shaped state in which the distance between the first drooping portion 207, 207, the first side wall portion 211, the second hanging portion 209, and the second side wall portion 213 are elastically deformed so as to approach each other, and are assembled to the lower rail 101. 207, due to the elastic repulsive force of the first side wall portion 211, the ball 141, the fourth support portion 323 of the second guide portion 325 of the lower rail 101, and the second support portion 217 of the first guide portion 219 of the upper rail 103 are loosened. Lost . Similarly, after assembly, the ball 143, the eighth support portion 329 of the fourth guide portion 331 of the lower rail 101, and the third guide portion 225 of the upper rail 103 are caused by the elastic repulsive force of the second hanging portion 209 and the second side wall portion 213. The backlash with the sixth support portion 223 is eliminated.
尚、本発明は上記形態例に限定するものではない。上記形態例では、アッパレール１０３は組付け前の自然状態では、図１の二点鎖線で示すように、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３とがフロアＦ方向に行くほど、第１垂下部２０７、第１側壁部２１１と第２垂下部２０９、第２側壁部２１３との間隔が広がる「ハ」字状態となるように設定したが、ロアレール１０１の組み付け前の自然状態で、第３側壁部３１３、第４側壁部３１５がフロアＦから離れるほどに、第３側壁部３１３と第４側壁部３１５との間隔が狭まる「ハ」字形となるように設定してもよい。 The present invention is not limited to the above embodiment. In the above embodiment, the upper rail 103 is in a natural state before assembly, as shown by a two-dot chain line in FIG. 1, the first hanging portion 207, the first sidewall portion 211 and the second hanging portion 209, and the second sidewall portion 213. Is set so that the distance between the first hanging part 207, the first side wall part 211 and the second hanging part 209, and the second side wall part 213 increases as it goes in the direction of the floor F. In the natural state before assembling the lower rail 101, the distance between the third side wall part 313 and the fourth side wall part 315 becomes narrower as the third side wall part 313 and the fourth side wall part 315 move away from the floor F. You may set so that.
１４１、１４３ ボール
２１５ 第１支持部
２２１ 第５支持部
３２３ 第４支持部
３２９ 第８支持部
141, 143 Ball 215 1st support part 221 5th support part 323 4th support part 329 8th support part
Claims (3)
前記アッパレールの断面形状は、フロアと交差する方向に延びる第１側壁部と、第２側壁部とを有し、
前記ロアレールの断面形状は、前記アッパレールの第１側壁部、第２側壁部と略平行な第３側壁部と第４側壁部とを有し、
前記アッパレールの第１側壁部に、上から第１支持部、第２支持部からなり、前記ロアレールの第３側壁部との間隔が広がるような略く字形の第１ガイド部を設け、
前記ロアレールの第３側壁部に、前記第１ガイド部の第１支持部と略平行な第３支持部、前記第１ガイド部の第２支持部と略平行な第４支持部からなリ、前記アッパレールの第１側壁部との間隔が広がるような略く字形の第２ガイド部を設け、
前記アッパレールの第２側壁部に、上から第５支持部、第６支持部からなり、前記ロアレールの第４側壁部との間隔が広がるような略く字形の第３ガイド部を設け、
前記ロアレールの第４側壁部に、前記第３ガイド部の第５支持部と略平行な第７支持部、前記第３ガイド部の第６支持部と略平行な第８支持部からなリ、前記アッパレールの第２側壁部との間隔が広がるような略く字形の第４ガイド部を設け、
前記第１ガイド部と、前記第２ガイド部との空間に、前記第１〜第４支持部が当接可能なボールを設け、
前記第３ガイド部と、前記第４ガイド部との空間に、前記第５〜第８支持部が当接可能なボールを設け、
前記第１支持部と前記ボールとの接点での法線と鉛直線とのなす角が、前記第４支持部と前記ボールとの接点での法線と鉛直線とのなす角より小さく設定され、
前記第５支持部と前記ボールとの接点での法線と鉛直線とのなす角が、前記第８支持部と前記ボールとの接点での法線と鉛直線とのなす角より小さく設定されていることを特徴とするシートスライド装置。 In a seat slide device comprising a lower rail provided on the floor side and an upper rail provided on the seat side and movably engaged with the lower rail,
The cross-sectional shape of the upper rail has a first side wall portion extending in a direction intersecting the floor, and a second side wall portion,
The cross-sectional shape of the lower rail has a first side wall part, a third side wall part and a fourth side wall part substantially parallel to the second side wall part of the upper rail,
The first side wall portion of the upper rail is provided with a first guide portion having a substantially square shape that is composed of a first support portion and a second support portion from above, and widens the distance from the third side wall portion of the lower rail,
The third side wall of the lower rail includes a third support part substantially parallel to the first support part of the first guide part, and a fourth support part substantially parallel to the second support part of the first guide part, A second guide portion having a substantially square shape is formed so that a distance from the first side wall portion of the upper rail is widened;
The second side wall portion of the upper rail is provided with a third guide portion having a substantially square shape that includes a fifth support portion and a sixth support portion from above, and widens the distance from the fourth side wall portion of the lower rail.
A fourth side wall portion of the lower rail comprising a seventh support portion substantially parallel to the fifth support portion of the third guide portion, and an eighth support portion substantially parallel to the sixth support portion of the third guide portion; A substantially rectangular fourth guide portion is provided so that the distance from the second side wall portion of the upper rail is widened;
In the space between the first guide part and the second guide part, a ball that can contact the first to fourth support parts is provided,
In the space between the third guide portion and the fourth guide portion, a ball that can contact the fifth to eighth support portions is provided,
The angle formed between the normal line and the vertical line at the contact point between the first support part and the ball is set smaller than the angle formed between the normal line and the vertical line at the contact point between the fourth support part and the ball. ,
The angle formed between the normal line and the vertical line at the contact point between the fifth support part and the ball is set smaller than the angle formed between the normal line and the vertical line at the contact point between the eighth support part and the ball. A seat slide device characterized by that.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003320608A JP4209292B2 (en) | 2003-09-12 | 2003-09-12 | Seat slide device |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2003320608A JP4209292B2 (en) | 2003-09-12 | 2003-09-12 | Seat slide device |
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| JP4209292B2 true JP4209292B2 (en) | 2009-01-14 |
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| JP4774913B2 (en) * | 2005-10-25 | 2011-09-21 | アイシン精機株式会社 | Vehicle seat slide device and method of assembling the same |
| JP5947642B2 (en) * | 2012-07-09 | 2016-07-06 | 株式会社東洋シート | Vehicle seat slide device |
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