JP2007216889A - Seat structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat structure capable of properly protecting an occupant and adjusting seating feel of the occupant. <P>SOLUTION: In the seat structure, in a seat 10, when a head-on collision of a vehicle is predicted, a restriction body 24 is moved to a rear side of the vehicle and when the head-on collision of the vehicle 12 is detected, drawing out of a seat belt 34 from a winding device 36 is restricted and the seat belt 34 is wound on the winding device 36. Therefore, at the head-on collision of the vehicle 12, movement of the waist part of the occupant 32 to a front side of the vehicle is restricted by the restriction body 24 and a lap belt 34B, thereby, generation of submarine phenomenon of the occupant 32 can be suppressed. Since the restriction body 24 is moved to a rear side of the vehicle when the head-on collision of the vehicle 12 is predicted, in the head-on collision of the vehicle 12, the restriction body 24 can be sufficiently moved to the rear side of the vehicle and movement of the waist part of the occupant 32 to the front side of the vehicle is properly restricted, thereby, the occupant 32 can be properly protected. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seat structure on which a vehicle occupant sits.

  As the seat structure, when the vehicle suddenly decelerates, the submarine prevention bar in the seat cushion is moved rearward by the biasing force of the spring, restraining the occupant's thigh, restraining the occupant from moving to the front of the vehicle In some cases, the passenger is protected (see, for example, Patent Document 1).

  Here, in such a seat structure, it is preferable that an occupant can be appropriately protected during sudden deceleration of the vehicle.

Furthermore, it is preferable that the seating feeling of the passenger on the seat cushion can be adjusted by adopting a configuration in which the position of the submarine prevention bar can be adjusted.
JP-A-5-286387

  An object of the present invention is to obtain a seat structure capable of appropriately protecting an occupant and a seat structure capable of adjusting a seating feeling of the occupant in consideration of the above facts.

  The seat structure according to claim 1 is provided in a seat member on which a vehicle occupant is seated toward one side, and provided inside or on the upper surface of the seat member, and other when a collision on one side of the vehicle is predicted. And a moving member that can be restrained from moving to one side of the occupant.

  The seat structure according to claim 2 is provided on a seat member on which a vehicle occupant is seated facing one side, or on the inside or the upper surface of the seat member, and is moved to the other side to move to one side of the occupant. And a movement member that is capable of restraining movement and that is capable of adjusting the movement position.

  The seat structure according to claim 3 is provided on a seat member on which an occupant of a vehicle is seated facing one side, and on an upper surface of the seat member, and is moved to one side or the other side to move to the seat member. And a moving member that can adjust the seating position of the occupant.

  The seat structure according to claim 4 is the seat structure according to claim 2 or claim 3, wherein the moving member is moved to the other side when a collision on one side of the vehicle is predicted or detected. It is characterized by that.

  According to a fifth aspect of the present invention, the seat structure according to any one of the first to fourth aspects further comprises a seat belt that is capable of restraining movement of the occupant to one side. It is a feature.

  In the seat structure according to the first aspect, the vehicle occupant sits on the seat member facing one side. Furthermore, a moving member is provided inside or on the upper surface of the seat member, and when a collision on one side of the vehicle is predicted, the moving member is moved to the other side and the movement to one side of the occupant is restrained. Has been made possible. For this reason, when the vehicle collides on one side, the occupant is protected by restraining the movement of the occupant to one side.

  Here, as described above, when a collision on one side of the vehicle is predicted, the moving member is moved to the other side. For this reason, when the vehicle collides on one side, the moving member can sufficiently move to the other side, and the movement to one side of the occupant is appropriately restrained to appropriately protect the occupant. be able to.

  In the seat structure according to the second aspect, the vehicle occupant sits on the seat member facing one side. Furthermore, a moving member is provided inside or on the upper surface of the seat member, and movement of the occupant to one side can be restricted by moving the moving member to the other side.

  Here, the moving position of the moving member can be adjusted. For this reason, the feeling of resistance that the occupant receives from the moving member can be adjusted, and the occupant's feeling of sitting on the seat member can be adjusted.

  In the seat structure according to the third aspect, the vehicle occupant sits on the seat member facing one side.

  Here, the seating position of the passenger on the seat member can be adjusted by moving the moving member provided on the upper surface of the seat member to one side or the other side. For this reason, a passenger's seating feeling to a seat member can be adjusted.

  In the seat structure according to the fourth aspect, when a collision on one side of the vehicle is predicted or detected, the moving member is moved to the other side. For this reason, when the vehicle collides on one side, the movement to one side of the occupant can be restricted, and the occupant can be protected.

  In the seat structure according to the fifth aspect, the seat belt can restrain movement of the occupant to one side. For this reason, when the vehicle collides on one side, the movement to one side of the occupant can be effectively restrained.

[First Embodiment]
FIG. 1 is a side view of a seat 10 according to a first embodiment configured by applying the seat structure of the present invention as viewed from the right side of a vehicle. In the drawings, the front side of the vehicle is indicated by an arrow FR, and the upper side is indicated by an arrow UP.

  A seat 10 (for example, a driver's seat) according to the present embodiment is provided in a passenger compartment 14 of a vehicle 12, and the vehicle 12 is, for example, a right-hand drive vehicle.

  The seat 10 has a seat cushion 16 as a seat member. The lower surface of the seat cushion 16 is horizontally disposed, and the upper surface of the seat cushion 16 is inclined upward as it goes forward of the vehicle. The thickness of the seat cushion 16 is gradually increased as it goes forward of the vehicle. ing.

  Inside the seat cushion 16, a predetermined number of rails 18 (two in the present embodiment) constituting the guiding means are provided, and the predetermined number of rails 18 are arranged along the vehicle longitudinal direction. Are arranged in the vehicle width direction. The rail 18 is provided with a rack 20 that constitutes guide means, and rack teeth 20 </ b> A are formed on the upper surface of the rack 20. An output gear 22A of a motor 22 as a driving means is meshed with the rack teeth 20A. When the motor 22 is driven and the output gear 22A is rotated, the rack 20 is guided by the rail 18 and the vehicle longitudinal direction. Has been made movable.

  The predetermined number of racks 20 are fixed to a restraint body 24 having an inverted V-shaped cross section (may be cylindrical) as a moving member, and the restraint body 24 is disposed on the front side of the vehicle in the seat cushion 16. ing. The restraint 24 is movable in the vehicle front-rear direction together with the predetermined number of racks 20 by driving a predetermined number of motors 22 and moving the predetermined number of racks 20 in the vehicle front-rear direction.

  The seat 10 has a seat back 26, and the seat back 26 is erected in a state of being inclined obliquely upward and rearward from the rear end of the seat cushion 16.

  A phosphorus lining mechanism 28 is provided between the seat cushion 16 and the seat back 26, and the phosphorus lining mechanism 28 prevents the seat back 26 from tilting with respect to the seat cushion 16. Further, by operating the phosphorus lining mechanism 28, the inclination angle of the seat back 26 with respect to the seat cushion 16 can be adjusted.

  Connected to the phosphorus lining mechanism 28 is a phosphorus lining operating mechanism 30 (for example, a piston (a rack meshed with a pinion) and an inflator connected to a cylinder or a motor connected to a gear mechanism) constituting a tilting means. By operating the phosphorus lining operating mechanism 30, the seat back 26 is tilted in the vehicle front-rear direction with respect to the seat cushion 16 to a normal tilt position (for example, a position disposed perpendicular to the seat cushion 16). It is possible to return.

  An occupant 32 (for example, a driver) is seated on the seat 10 facing the front side (one side) of the vehicle, and the upper body 32A of the occupant 32 is supported while being placed on the seat cushion 16, and the seat Tilt to the vehicle rear side (other side) is supported by the back 26.

  The occupant 32 is wearing a seat belt 34, and the front end of the seat belt 34 is fixed to the outside in the vehicle width direction and the lower side of the seat 10 (outside in the vehicle width direction of the seat cushion 16). The base end side of the seat belt 34 is wound around a winding device 36, and the winding device 36 is located outside and below the seat 10 in the vehicle width direction (for example, outside and below the seat back 26 in the vehicle width direction). It is fixed.

  The seat belt 34 is movably inserted into the shoulder anchor 38, and the shoulder anchor 38 is fixed to the vehicle width direction outer side and upper side of the seat 10 (the seat back 26 in the vehicle width direction outer side and upper side). The belt 34 is movably supported on the outer side and the upper side of the seat 10 in the vehicle width direction.

  The seat belt 34 is movably inserted into a tongue (not shown) on the tip side of the shoulder anchor 38, and the tongue is detachably attached to a buckle (not shown) provided on an inner anchor (not shown). ing. The inner anchor is fixed to the inner side and lower side of the seat 10 in the vehicle width direction (the inner side of the seat cushion 16 in the vehicle width direction), so that the seat belt 34 is supported to be movable inward and lower side of the seat 10 in the vehicle width direction. Has been.

  The seat belt 34 includes a shoulder belt 34A between the shoulder anchor 38 and the tongue, and a lap belt 34B at the front end side of the tongue, and the shoulder belt 34A is located outside the occupant 32 in the vehicle width direction. The lap belt 34 </ b> B is laid across the waist of the occupant 32 in the vehicle width direction while being slanted from the shoulder to the lumbar of the occupant 32 in the vehicle width direction.

  The winding device 36 is provided with a lock mechanism and a pretensioner mechanism. When the lock mechanism is operated, the withdrawal of the seat belt 34 from the winding device 36 is restricted, and the pretensioner mechanism is operated. As a result, the seat belt 34 is wound around the winding device 36.

  The predetermined number of motors 22, the phosphorus lining operating mechanism 30 and the winding device 36 are connected to a control device 40, and a prediction sensor 42 and a detection sensor 44 provided on the vehicle 12 are connected to the control device 40. ing. The prediction sensor 42 can predict a frontal collision of the vehicle 12 based on, for example, the traveling speed of the vehicle 12 or the distance to the collision target. The detection sensor 44 can detect a frontal collision of the vehicle 12 based on, for example, the traveling acceleration of the vehicle 12.

  The control device 40 is connected to an operation device 46 as an operation means provided in the vehicle 12. When the operation device 46 is operated, the predetermined number of motors 22 are operated by the control of the control device 40. The restraint 24 is movable in the vehicle front-rear direction. Thereby, the position of the restraint body 24 in the vehicle front-rear direction can be adjusted.

  Next, the operation of the present embodiment will be described.

  In the seat 10 configured as described above, when the prediction sensor 42 predicts a frontal collision of the vehicle 12, the motor 22 is operated by the control of the control device 40 as shown in FIG. The guided body 24 is moved rearward of the vehicle, and the restraint 24 is moved rearward of the vehicle. Further, when the detection sensor 44 detects a frontal collision of the vehicle 12, the control device 40 controls the lock mechanism to restrict the withdrawal of the seat belt 34 from the winding device 36, and the pretensioner. The mechanism is operated and the seat belt 34 is wound around the winding device 36.

  For this reason, at the time of a frontal collision of the vehicle 12, the restraint body 24 is disposed near the front of the vehicle at the thigh base of the occupant 32 (at this time, the upper surface of the seat cushion 16 may be raised by the restraint body 24). The restraint body 24 restrains the movement of the waist of the occupant 32 toward the vehicle front side. Therefore, the so-called submarine phenomenon of the occupant 32 (a phenomenon in which the waist of the occupant 32 passes below the lap belt 34B of the seat belt 34) can be suppressed, and the occupant 32 can be protected.

  In addition, as described above, when the vehicle 12 collides with the front, the pull-out of the seat belt 34 from the take-up device 36 is restricted, and the seat belt 34 is taken up by the take-up device 36 so that the seat belt 34 is wrapped. The belt 34 </ b> B restrains the movement of the waist of the occupant 32 toward the vehicle front side. For this reason, generation | occurrence | production of the submarine phenomenon of the passenger | crew 32 can be suppressed effectively.

  Here, as described above, when a frontal collision of the vehicle 12 is predicted, the restraint 24 is moved to the rear of the vehicle. For this reason, at the time of a frontal collision of the vehicle 12, the restraint 24 can sufficiently move to the rear of the vehicle, and the movement of the waist of the occupant 32 to the front side of the vehicle is appropriately restrained to appropriately protect the occupant 32. can do. For this reason, the moving speed of the restraint body 24 can be slowed down, and the harm to the occupant 32 due to the movement of the restraint body 24 can be reduced.

  Further, when the operating device 46 is operated, the restraint body 24 is moved in the vehicle front-rear direction, so that the position of the restraint body 24 in the vehicle front-rear direction can be adjusted. For this reason, the feeling of resistance that the occupant 32 receives from the restraint body 24 can be adjusted, and the seating feeling of the occupant 32 on the seat cushion 16 can be adjusted. In particular, the restraint body 24 is disposed on the vehicle front side portion of the seat cushion 16 where the occupant 32 receives a small load from the seat cushion 16 and the thickness of the seat cushion 16 is large. The seating feeling of the occupant 32 can be improved.

  In the present embodiment, the restraint 24 is moved in the vehicle front-rear direction by the rail 18, the rack 20, and the motor 22, but may be configured as shown in FIG. That is, in FIG. 3, a predetermined number (two in FIG. 3) of motors 22 are fixed to the seat cushion 16, and the output shaft of the motor 22 is disposed in the vehicle front-rear direction within the seat cushion 16, 24 is penetrated. A male screw 22B is formed on the output shaft of the motor 22, and a female screw 48 is screwed into the male screw 22B. The female screw 48 is fixed to the restraining body 24. When the motor 22 is driven and the male screw 22B is rotated, the female screw 48 is moved in the vehicle front-rear direction along the male screw 22B. Is moved in the vehicle front-rear direction together with the female screw 48.

[Second Embodiment]
4 shows a side view of a seat 50 according to a second embodiment configured by applying the seat structure of the present invention as seen from the right side of the vehicle, and FIG. Is shown in a perspective view seen from the diagonally right front of the vehicle.

  The seat 50 according to the present embodiment has substantially the same configuration as that of the first embodiment, but differs in the following points.

  In the seat 50 according to the present embodiment, the seat cushion 16 is provided with a belt conveyor 52 as a moving means, and the belt conveyor 52 is provided with a plurality of cylindrical rollers 54. The plurality of rollers 54 are arranged along the vehicle width direction and arranged in the vehicle front-rear direction. An annular belt 56 as a moving member is wound around the plurality of rollers 54, and the upper portion of the belt 56 constitutes an intermediate portion in the vehicle width direction on the upper surface of the seat cushion 16.

  A driving mechanism 58 (for example, a motor) is connected to the belt conveyor 52. When the driving mechanism 58 is operated, the plurality of rollers 54 are rotated and the belt 56 is rotated. As a result, the upper portion of the belt 56 is moved in the vehicle front-rear direction, so that the waist portion of the occupant 32 is moved in the vehicle front-rear direction by the upper portion of the belt 56 and the seating position of the occupant 32 on the seat cushion 16 is changed. It has been made adjustable.

  The drive mechanism 58 is connected to the control device 40, and when the operation device 46 connected to the control device 40 is operated, the drive mechanism 58 is operated by the control of the control device 40, and the upper portion of the belt 56 is operated. Is movable in the longitudinal direction of the vehicle.

  Next, the operation of the present embodiment will be described.

  In the seat 50 configured as described above, when the prediction sensor 42 predicts a frontal collision of the vehicle 12 or when the detection sensor 44 detects a frontal collision of the vehicle 12, the drive mechanism 58 is operated by the control of the control device 40. Thus, the roller 54 is rotated and the upper part of the belt 56 is moved rearward of the vehicle. Further, when the detection sensor 44 detects a frontal collision of the vehicle 12, the control device 40 controls the lock mechanism to restrict the withdrawal of the seat belt 34 from the winding device 36, and the pretensioner. The mechanism is operated and the seat belt 34 is wound around the winding device 36.

  Therefore, as shown by a solid line in FIG. 4, even when the occupant 32 is seated in a state where the waist is positioned at, for example, an intermediate portion of the seat cushion 16 in the vehicle front-rear direction before the frontal collision of the vehicle 12 (easy posture state). 4, when the front collision of the vehicle 12 occurs, the waist portion of the occupant 32 is moved rearward due to the movement of the upper portion of the belt 56 toward the rear of the vehicle, and the occupant 32 seats the waist on the seat cushion. 16 is seated in a state (normal posture state) positioned at the rear end of the vehicle. As a result, as shown in FIGS. 6A and 6B, the pelvis 32 </ b> B of the lumbar 32 of the occupant 32 can be erected at the time of the frontal collision of the vehicle 12 as compared with the frontal collision of the vehicle 12.

  In addition, as described above, when the vehicle 12 collides with the front, the pull-out of the seat belt 34 from the take-up device 36 is restricted, and the seat belt 34 is taken up by the take-up device 36 so that the seat belt 34 is wrapped. The belt 34B restrains the movement of the lumbar part (pelvis 32B) of the occupant 32 toward the front side of the vehicle.

  Thus, at the time of a frontal collision of the vehicle 12, the lumbar part (pelvis 32B) of the occupant 32 stands up and the movement of the lumbar part (pelvis 32B) of the occupant 32 toward the vehicle front is effectively restrained by the lap belt 34B. The occurrence of the submarine phenomenon of the occupant 32 can be effectively suppressed, and the occupant 32 can be appropriately protected.

  Further, when the operation device 46 is operated, the upper portion of the belt 56 is moved in the vehicle front-rear direction, and the waist of the occupant 32 is moved in the vehicle front-rear direction. Therefore, the seating position of the occupant 32 on the seat cushion 16 is adjusted, the seating posture of the occupant 32 on the seat 50 can be adjusted, and the seating feeling of the occupant 32 on the seat 50 can be adjusted.

  In the first embodiment and the second embodiment, when the prediction sensor 42 predicts a frontal collision of the vehicle 12 or when the detection sensor 44 detects a frontal collision of the vehicle 12, the control device 40. When the phosphorus lining operating mechanism 30 is operated by the above control, the seat back 26 may be tilted toward the vehicle front side with respect to the seat cushion 16 and returned to the normal tilt position. In this case, when a frontal collision of the vehicle 12 is predicted or detected, the upper body 32A of the occupant 32 is tilted toward the front of the vehicle due to the tilt of the seat back 26 toward the front of the vehicle, thereby moving the waist of the occupant 32 toward the front of the vehicle. Can be more effectively restrained by the lap belt 34B.

  Further, in the first embodiment and the second embodiment, when the detection sensor 44 detects a frontal collision of the vehicle 12, the seat from the winding device 36 is controlled by the control device 40 under the control of the control device 40. The pull-out of the belt 34 is restricted, and the seat belt 34 is wound around the winding device 36 by the pretensioner mechanism. However, when the prediction sensor 42 predicts a frontal collision of the vehicle 12, the control device 40 The control may restrict the withdrawal of the seat belt 34 from the winding device 36 by the lock mechanism, and the seat belt 34 may be wound around the winding device 36 by the pretensioner mechanism.

  Further, in the first embodiment and the second embodiment, when the occupant 32 is seated on the seats 10 and 50 toward the front of the vehicle, it is restrained when a frontal collision of the vehicle 12 is predicted or detected. Although the upper part of the body 24 or the belt 56 is configured to move to the rear side of the vehicle, when the occupant 32 sits on the seats 10 and 50, for example, facing the rear side of the vehicle, a frontal collision of the vehicle 12 is predicted or detected. It is good also as a structure which moves the restraint body 24 or the belt 56 upper part to the vehicle front side.

It is the side view seen from the vehicle right side which shows the seat concerning a 1st embodiment of the present invention. It is the side view seen from the vehicle right side which shows the time of front collision of the vehicle in the seat concerning a 1st embodiment of the present invention. It is the perspective view seen from the vehicle back diagonal right side which shows another example of the seat cushion in the seat which concerns on the 1st Embodiment of this invention. It is the side view seen from the vehicle right side which shows the sheet | seat which concerns on the 2nd Embodiment of this invention. It is the perspective view seen from the vehicle front diagonal right side which shows the sheet | seat which concerns on the 2nd Embodiment of this invention. (A) And (B) is the side view seen from the vehicle right side which shows the arrangement situation of a crew member's pelvis and lap belt in the seat concerning a 2nd embodiment of the present invention, (A) FIG. 4B shows the state before the frontal collision of the vehicle, and FIG.

Explanation of symbols

10 sheet (sheet structure)
12 Vehicle 16 Seat cushion (seat member)
24 Constraint body (moving member)
32 Crew 34 Seat belt 50 Seat (seat structure)
56 Belt (moving member)

Claims (5)

A seat member on which a vehicle occupant sits facing one side;
A moving member that is provided inside or on the upper surface of the seat member, and is moved to the other side when a collision on one side of the vehicle is predicted, and can be restrained from moving to one side of the occupant;
Sheet structure with A seat member on which a vehicle occupant sits facing one side;
A moving member that is provided in or on the upper surface of the seat member and can be restrained from moving to one side of the occupant by being moved to the other side, and the moving position can be adjusted;
Sheet structure with A seat member on which a vehicle occupant sits facing one side;
A moving member that is provided on the upper surface of the seat member and is moved to one side or the other side so that the seating position of the occupant on the seat member can be adjusted;
Sheet structure with   4. The seat structure according to claim 2, wherein the moving member is moved to the other side when a collision on one side of the vehicle is predicted or detected.   The seat structure according to any one of claims 1 to 4, further comprising a seat belt capable of restraining movement of the occupant to one side.

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