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公开(公告)号：JP4118256B2
公开(公告)日：2008-07-16
申请号：JP2004184137
申请日：2004-06-22
Applicant: トヨタ自動車株式会社 , 日本発条株式会社
CPC classification number: B60N2/66 , B60N2/42745 , B60N2/42781 , B60N2/4838 , B60N2/4885
Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load generated by a rearward movement of a lumbar part of the seated user is sufficiently transmitted from a pressure plate (10a; 20c) of operating force generating means (10) to an operating force generating mechanism (10B), regardless of an amount of rearward tilting of a seat back (3). Then, a pressure roller (10P) serving as a driven member of the operating force generating mechanism (10B) largely deflects and sufficiently pulls inner cables (11B, 11B) of respective pulling cable devices (11, 11), thereby smoothly moving both end portions of a headrest frame (7) upward. As a result, the headrest frame (7) is moved upward smoothly and reliably, and a headrest (4) is moved in an upward-forward direction, that is, toward the head of the seated user smoothly and reliably.
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公开(公告)号：JP4102779B2
公开(公告)日：2008-06-18
申请号：JP2004184131
申请日：2004-06-22
Applicant: トヨタ自動車株式会社 , 日本発条株式会社
CPC classification number: B60N2/4829 , B60N2/4228 , B60N2/42781 , B60N2/4885 , B60N2/66
Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load generated by a rearward movement of a lumbar portion of the seated user is transmitted from a pressure plate (10A) of operating force generating means (10) to an operating force generating mechanism (10B). Then, a pressure roller of the operating force generating mechanism (10B) deflects and pulls inner cables of pulling cable devices (11, 11), thereby moving both end portions of a headrest frame (7) upward. As a result, the headrest frame (7) is moved upward along with headrest supporting brackets (7C, 7C) smoothly and reliably, whereby a headrest (4) attached to the headrest supporting brackets (7C, 7C) with headrest stays (4A, 4A) arranged between the headrest (4) and the respective headrest supporting brackets (7C, 7C) is moved in the upward-forward direction, that is, toward the head of the seated user smoothly and reliably.
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公开(公告)号：JP4343818B2
公开(公告)日：2009-10-14
申请号：JP2004340893
申请日：2004-11-25
Applicant: トヨタ自動車株式会社 , 日本発條株式会社
IPC: B60N2/42 , B60N2/48 , B60R21/055
Abstract: PROBLEM TO BE SOLVED: To provide a vehicular seat capable of securely operating a speed-increasing unit quickly at the time of collision. SOLUTION: The vehicular seat is equipped with a headrest driving mechanism for operating the headrest, a pressure receiving member 70, and the speed-increasing unit 79 which increases the speed of moving of the pressure receiving member 70 and drives it to the direction pulling a wire 44. The speed-increasing unit 79 has a link mechanism 83 composed of a pair of arms 81, 82, a guide pulley 97 rotatably provided at the lower end part of the arm 82, and a guide hole 100 guiding the moving of the guide pulley 97, or the like. The pressure receiving member 70 is provided with a protruding part 71 at the position opposed to a roller 95. The tapered surface 72 is formed on the protrusion part 71. The upper part side of the tapered surface 72 is projected to the roller 95 side than the lower part side. When the pressure receiving member 70 is moved backward, the downward component force F1 is generated at the abutting part to the roller by abutting of the tapered surface 72 to the roller 95. COPYRIGHT: (C)2006,JPO&NCIPI
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Patent Agency Ranking
公开(公告)号：JP4327708B2
公开(公告)日：2009-09-09
申请号：JP2004360096
申请日：2004-12-13
Applicant: トヨタ自動車株式会社 , 日本発條株式会社
IPC: B60N2/42 , A47C7/38 , B60N2/48 , B60R21/055
Abstract: PROBLEM TO BE SOLVED: To provide a seat for a vehicle capable of actuating a headrest quickly in the event of collision. SOLUTION: A headrest driving mechanism 70 installed in a seat back 12 is equipped with a long hole bracket 51 having a guide hole 50, a sliding member 58 movable along the guide hole 50 between the first and the second position, a pressure receiving member 67, an engaging member 75 having a hook part 81, and a tensile spring 77. The engaging member 75 has a hook part 81 which is able to restrain the sliding member 58 in the first position. The tensile spring 77 energizes the sliding member 58 toward the second position. When the occupant pushes the pressure receiving member 67 backward to cause the hook part 81 to be set off from the sliding member 58, the member 58 moves along the guide hole 50 toward the second position owing to the tension of the spring 77, and the headrest body 14 inclines to the front while it moves upward. COPYRIGHT: (C)2006,JPO&NCIPI
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公开(公告)号：JP4194613B2
公开(公告)日：2008-12-10
申请号：JP2006189467
申请日：2006-07-10
Applicant: トヨタ自動車株式会社 , 日本発條株式会社
CPC classification number: B60N2/4885 , B60N2/4808 , B60N2/4838
Abstract: A vehicle seat includes a seat body having a seat back (12), a pair of left and right legs (16), a headrest (26) coupled to the seat back (12) at above the seat back through the pair of legs (16), load detecting means (28) provided on the seat back (12) and having a movable part (54) that displaces in a predetermined direction upon undergoing a load from the front of the seat back (12); a first interacting member (142) mechanically coupled to one leg of the pair (16) and to the movable part of the load detecting means (28), to move one leg of the pair in conjunction with a displacement of the movable part (54) caused upon undergoing the load, thereby displacing the headrest (26) frontward, and a second interacting member (144) mechanically coupled to the other leg of the pair (16) and to the first interacting member (142), to move the other leg of the pair (16) in conjunction with a movement of the first interacting member (142) caused upon moving the one leg of the pair, thereby displacing the headrest (26) frontward.
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公开(公告)号：JP4392309B2
公开(公告)日：2009-12-24
申请号：JP2004271790
申请日：2004-09-17
Applicant: トヨタ自動車株式会社 , 日本発條株式会社
IPC: B60N2/42 , A47C7/38 , B60N2/48 , B60R21/055
Abstract: PROBLEM TO BE SOLVED: To provide a seat for a vehicle having a headrest capable of effectively constraining a head part at the time of a collision. SOLUTION: A seat back 12 has a support bracket 60 for inserting a stay 15 of the headrest 13, an upper frame member 32 for supporting a back face 60a of the support bracket 60 to be movable in the vertical direction, a headrest driving mechanism 67 and a pressure receiving member 70. The headrest driving mechanism 67 includes an oblong bracket 51 having a guide hole 50, a slide member 58 inserted into the guide hole 50 and a pressing member for bringing the slide member 58 into contact with an upper side part 50c of the guide hole 50. To constitute the pressing means, a wire 44 connected to the slide member 58 is obliquely extended to the upper side part 50c side by forming an angle α1 with the upper side part 50c of the guide hole 50. COPYRIGHT: (C)2006,JPO&NCIPI
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公开(公告)号：JP4392308B2
公开(公告)日：2009-12-24
申请号：JP2004271789
申请日：2004-09-17
Applicant: トヨタ自動車株式会社 , 日本発條株式会社
IPC: B60N2/42 , A47C7/38 , B60N2/48 , B60R21/055
Abstract: PROBLEM TO BE SOLVED: To provide a seat for a vehicle capable of securing the slidability of a headrest driving mechanism of a sliding structure and preventing lowering head part constraint property at the time of a collision. SOLUTION: A seat back 12 has a support bracket 60 for inserting a stay 15 of a headrest 13, a sliding guide bracket 65 for supporting the support bracket 60 to be movable in the vertical direction, and a headrest driving mechanism 67, etc. The headrest driving mechanism 67 drives the support bracket 60 to incline to a front side, while the support bracket 60 moves from a reference position toward an ascending position when a pressure receiving member 75 moves to a rear side. The sliding guide bracket 65 is provided with a pressing part 70 and a horizontal direction regulating part 71. The pressing part 70 energizes the support bracket 60 toward an upper frame member 32. COPYRIGHT: (C)2006,JPO&NCIPI
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