WO2022270395A1 - 車両用シート - Google Patents
車両用シート Download PDFInfo
- Publication number
- WO2022270395A1 WO2022270395A1 PCT/JP2022/024065 JP2022024065W WO2022270395A1 WO 2022270395 A1 WO2022270395 A1 WO 2022270395A1 JP 2022024065 W JP2022024065 W JP 2022024065W WO 2022270395 A1 WO2022270395 A1 WO 2022270395A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- seat
- contact surface
- cushion frame
- vehicle seat
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
- B60N2/161—Rods
- B60N2/1615—Parallelogram-like structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/165—Gear wheel driven mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
- B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
- B60N2/4221—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the front
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
- B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
- B60N2/4228—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the rear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42709—Seats or parts thereof displaced during a crash involving residual deformation or fracture of the structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
- B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
- B60N2/42763—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
Definitions
- the present invention relates to a vehicle seat.
- some vehicle seats have a link mechanism that adjusts the height of the seat.
- a link mechanism that adjusts the height of the seat.
- the occupant moves relatively to the rear side of the vehicle due to inertia.
- the link arm may rotate rearward, increasing the inclination angle of the link arm toward the vehicle rear side. At this time, the angle of inclination of the link arm increases, and the seat may come into contact with the occupant in the rear seat.
- the seat described in Patent Document 1 includes a stop body formed on a seat link (link arm) of the vehicle seat and a stop body formed on the seat link (link arm) of the vehicle seat. It comprises a stop body and an abuttable stop element.
- the stop element is screwed to the upper seat rail at a location behind the seat link on the upper seat rail. In the event of a rear collision of the vehicle, the stop element attached to the upper seat rail comes into contact with the stop body of the seat link, thereby suppressing the rearward inclination of the seat during a rear collision.
- the stop element is required to have sufficient strength to withstand the load when it comes into contact with the stop body on the seat link side in the event of a vehicle collision. Therefore, there is concern that the weight of the entire seat will increase.
- a vehicle seat includes a seat cushion and a link mechanism capable of adjusting the height of the seat cushion, wherein the link mechanism includes a cushion frame that supports the seat cushion; a mounting bracket that is directly or indirectly mounted on the floor of the vehicle compartment; a first position while the cushion frame is maintained parallel to the mounting bracket; and a vehicle rear side and a lower side with respect to the first position.
- a plurality of link arms for linking the cushion frame and the mounting bracket so as to be movable between the position of (1) and the mounting bracket; and a protrusion having a contact surface on the upper surface side with which the contacted portion, which is a part of the cushion frame, can contact in the event of a rear collision of the vehicle.
- FIG. 1 is a perspective view of the overall configuration of a seat according to an embodiment of the present invention, viewed obliquely from the rear;
- FIG. FIG. 2 is a perspective explanatory view showing guide rails and a link mechanism of the seat in FIG. 1;
- 3 is a perspective explanatory view of the cushion frame, mounting bracket, rear crossbar, and front and rear link arms of the link mechanism of FIG. 2;
- FIG. 3 is a side view of the cushion frame, mounting brackets, front and rear crossbars, and front and rear link arms of the linkage of FIG. 2;
- FIG. Figure 5 is an enlarged view of the mounting bracket projection, rear crossbar and rear link arm of Figure 4;
- FIG. 6 is an explanatory diagram showing the dimensions of the projections of the mounting bracket of FIG.
- FIG. 3 is a perspective explanatory view showing a state in which the cushion frame is in the lower second position and the state before the rear collision of the vehicle, and the cross bar in FIG. 2 is not in contact with the protrusion of the mounting bracket;
- FIG. 3 is a perspective explanatory view showing a state at the time of a rear collision of the vehicle, in which the crossbar of FIG. 2 is in contact with the protrusion of the mounting bracket;
- FIG. 9 is an enlarged perspective view showing a state in which the crossbar of FIG. 8 is in contact with projections;
- FIG. 10 is an explanatory diagram showing an example of a modification of the sheet of the present invention, in which folds are provided so that the protrusions are easily buckled.
- FIG. 10 is an explanatory view showing another modified example of the sheet of the present invention, in which grooves are provided so that the protrusions are easily buckled.
- FIG. 10 is an explanatory view showing still another modified example of the sheet of the present invention, in which ribs for reinforcement are provided on the protrusions.
- a vehicle seat 1 (hereinafter referred to as a seat 1) of the present embodiment is a seat that is attached to a passenger compartment of a vehicle, and includes a seat cushion 2 against which the buttocks of a seated person can come into contact. and a link mechanism 6 capable of adjusting the height of the seat cushion 2.
- the seat 1 includes the above-described seat cushion 2, a seat back 3 against which the back of the seated person can come into contact, a seat frame 4, guide rails 5, and a link mechanism 6.
- the seat frame 4 includes a cushion frame 7 that supports the seat cushion 2 from below and a back frame 8 that supports the seat back 3 in an upright position from behind.
- the cushion frame 7 has a pair of side portions 7a that are spaced apart from each other on both sides in the width direction Y of the seat 1 and extend in the vehicle front-rear direction X. As shown in FIG. Note that the cushion frame 7 is shared by the seat frame 4 and the link mechanism 6 .
- the guide rails 5 include a pair of lower rails 9 that extend in the vehicle front-rear direction X and are fixed to the floor surface of the vehicle compartment at positions spaced apart from each other, and a pair that is slidably guided in the vehicle front-rear direction X by the pair of lower rails 9 . and an upper rail 10 of.
- the link mechanism 6 includes the cushion frame 7, a pair of mounting brackets 11 positioned on the lower Z2 side of the pair of side portions 7a of the cushion frame 7, and a plurality of link arms. (that is, a pair of front link arms 12 and a pair of rear link arms 13). Further, in this embodiment, the link mechanism 6 further includes a front crossbar 14 and a rear crossbar 15 as part of the cushion frame 7 . In addition, the pair of rear link arms 13 are each provided with a reinforcing plate 16 for straddling the rear cross bar 15 for reinforcement.
- the pair of mounting brackets 11 has a pair of projections that can come into contact with the rear crossbar 15 in the event of a rear collision of the vehicle (when a load F is applied to the mounting brackets 11 from the rear X2 side as shown in FIG. 2).
- a portion 17 is provided.
- the pair of mounting brackets 11 are directly or indirectly attached to the floor of the passenger compartment.
- the pair of mounting brackets 11 are fixed to the pair of upper rails 10 of the guide rail 5 by bolts (for example, stud bolts 26 and nuts 27 on the upper surface of the upper rails 10 in FIG. 7). In other words, it is indirectly attached to the floor of the passenger compartment via the guide rails 5 .
- Mounting bracket 11 is made of a rigid material such as steel. In this embodiment, as shown in FIGS. 7 and 8, the pair of mounting brackets 11 are connected to each other by the lower crossbar 25, thereby improving the rigidity of the mounting brackets 11.
- FIG. 7 the pair of mounting brackets 11 are connected to each other by the lower crossbar 25, thereby improving the rigidity of the mounting brackets 11.
- a plurality of link arms, a pair of front link arms 12 and a pair of rear link arms 13, are positioned in a first position (more than cushion frame 7 in FIG. 2) while cushion frame 7 remains parallel to mounting bracket 11.
- the cushion frame 7 is positioned on the upper Z1 side) and a second position on the vehicle rear X2 side and the lower Z2 side with respect to the first position (positions shown in FIGS. 2 to 7). and the mounting bracket 11 are linked.
- the pair of front link arms 12 are rotatably supported at their lower ends by the front support portions 11a of the pair of mounting brackets 11, and their upper ends are cushioned. It is rotatably connected to a pair of side portions 7a of the frame 7 via a front crossbar 14. As shown in FIG.
- the pair of rear link arms 13 are supported at their lower ends by the respective rear support portions 11b of the pair of mounting brackets 11 so as to be rotatable about the rotation axis C2, and their upper ends are cushioned. It is rotatably connected to a pair of side portions 7a of the frame 7 via a rear crossbar 15. As shown in FIG.
- the front crossbar 14 rotatably supports the pair of front link arms 12 positioned on both sides in the width direction Y of the seat 1 .
- the rear crossbar 15 rotatably supports a pair of rear link arms 13 positioned on both sides in the width direction Y of the seat 1 .
- the front crossbar 14 and the rear crossbar 15, which are part of the cushion frame 7, each extend in the width direction Y of the seat 1 and are arranged so as to be separated from each other in the vehicle front-rear direction X. Both ends of the front crossbar 14 and the rear crossbar 15 are fixed to a pair of side portions 7a of the cushion frame 7, respectively.
- the rear crossbar 15 functions as a contacted portion that can contact the pair of projections 17 .
- the reinforcing plate 16 is fixed to the connecting portion of the rear link arm 13 and the rear crossbar 15 by welding or the like, and reinforces the rear link arm 13 .
- the protrusion 17 is formed integrally with the mounting bracket 11 and protrudes upward from the upper surface 11d of the mounting bracket 11 toward the Z1 side.
- the projecting portion 17 has an abutment surface 18 on the upper surface thereof with which the rear crossbar 15 can abut in the event of a rearward collision of the vehicle.
- the upper surface 11d of the mounting bracket 11 extends upward Z1 and includes a horizontal surface 11d1 in contact with the horizontal line HZ.
- the projecting portion 17 protrudes upward Z1 from the upper surface 11d of the mounting bracket 11 on the rear side X2 of the mounting bracket 11 relative to the rear support portion 11b. Therefore, when the rear crossbar 15 moves toward the vehicle rear X2 and downward Z2 in the event of a rearward collision of the vehicle, the rear crossbar 15 can abut on the protrusion 17 .
- a pair of protrusions 17 are provided so as to be spaced apart from each other in the width direction Y of the seat 1.
- FIG. The pair of protrusions 17 are arranged in a range inside the cushion frame 7 in the width direction Y. As shown in FIG.
- the height H0 of the contact surface 18 and the length L1 in the vehicle front-rear direction X shown in FIG. The dimensions are set so that they always come into contact with the
- the height H0 of the abutment surface 18 (specifically, the height from the bottom surface 11c of the mounting bracket 11 to the abutment surface 18) is the height when the cushion frame 7 is in the second position.
- the contact surface 18 is set at a height close to the rear crossbar 15 which is the contacted portion.
- the height H0 of the contact surface 18 is set to a height that allows a gap to be formed between the contact surface 18 and the rear crossbar 15 when the cushion frame 7 is in the second position. ing.
- the contact surface 18 contacts the rear crossbar 15 in the event of a rearward collision of the vehicle, so that the inclination angle of the rear link arm 13 can be suppressed.
- the height H0 of the abutment surface 18 is determined to correspond to various conditions such as the distance between the cushion frame 7 at the second position and the mounting bracket 11, the length of the rear link arm 13, the position of the rear crossbar 15, and the like. is set appropriately.
- the contact surface 18 of the protrusion 17 has a length L1 in the vehicle front-rear direction X that allows the rear crossbar 15 and the reinforcing plate 16 to contact at the same time.
- the length L1 of the contact surface 18 is set to 30 to 35 mm (approximately 33 mm).
- a front portion 18a including the front end of the contact surface 18 is formed flat.
- the total length L2 of the front portion 18a and the gently sloping intermediate portion 18c is set to about 15 to 25 mm (about 20 mm).
- the projecting portion 17 is preferably set to a dimension that can secure a cross section that can withstand a large load received from the rear crossbar 15 .
- the projection 17 has such rigidity that it does not deform when the rear crossbar 15 abuts against it during a rearward collision of the vehicle.
- At least a portion of a rear portion 18b including the rear end of the contact surface 18 in the vehicle front-rear direction X is set higher than a front portion 18a including the front end of the contact surface 18. ing. Specifically, the rear portion 18b of the contact surface 18 is inclined so as to be higher toward the vehicle rear X2 side so as to be continuous with the front portion 18a.
- the height H1 of the rear end of the rear portion 18b on the contact surface 18 (that is, the height of the rear end of the rear portion 18b with respect to the surface of the front portion 18a)
- a height of 2 to 10 mm (approximately 5 mm) is set as a height that can be positioned at a predetermined position while suppressing displacement toward the rear X2 side.
- the rear portion 18b of the contact surface 18 is inclined so as to gradually draw an arc toward the vehicle rear X2 side.
- the arc shape of the rear portion 18b is set to such a shape or radius of curvature that the rear portion 18b comes into contact with the cylindrical rear crossbar 15 at a plurality of points (or has wide surface contact).
- the radius of curvature R2 of the outer peripheral surface of the rear crossbar 15 is 12 to 13.5 mm (approximately 12.7 mm)
- the radius of curvature R1 of the rear portion 18b is 14 to 16.5 mm (approximately 15.7 mm). set.
- the vehicle seat of this embodiment includes a seat cushion 2 with which the buttocks of a seated person can abut, and a link mechanism 6 with which the height of the seat cushion 2 can be adjusted.
- the link mechanism 6 includes a cushion frame 7 that supports the seat cushion 2, a pair of mounting brackets 11 that are directly or indirectly attached to the floor of the vehicle compartment, and the cushion frame 7. While maintaining parallelism to the pair of mounting brackets 11, the cushion is movable between a first position and a second position located on the vehicle rear X2 side and downward Z2 side with respect to the first position.
- the projecting portion 17 is formed integrally with each of the pair of mounting brackets 11, and projects upward from the upper surface 11d (see FIGS. 4 to 6) of the mounting bracket 11 toward the Z1 side. It has an abutment surface 18 with which the rear crossbar 15 can abut.
- each of the pair of mounting brackets 11 attached to the floor of the vehicle compartment of the link mechanism 6 has an upper part.
- a projecting portion 17 extending to Z1 is integrally formed.
- the protrusion 17 is formed by the rear cross bar 15 as a portion of the cushion frame 7, which is a portion of the cushion frame 7, and the upper surface of the protrusion 17 when the seat tilts backward during a vehicle collision.
- the rear link arm 13 can be prevented from tilting by contacting with the side contact surface 18 .
- the rear cross bar 15 fixed to the cushion frame 7 directly abuts the mounting bracket 11 having sufficient strength to receive the load.
- the already existing portion having sufficient strength is There is no need to provide a new structure or reinforce the structure. Therefore, it is possible to suppress the occurrence of costs related to new structures and reinforcements.
- the mounting bracket 11 having the protrusion 17 may be replaced with another mounting bracket 11 having the protrusion 17, or a different height of the protrusion 17 may be changed. By replacing with the mounting bracket 11, it is easy to add the function of controlling the angle of inclination of the rear link arm 13 by retrofitting.
- the rear crossbar 15 rotatably supports the pair of rear link arms 13.
- the height H0 (see FIG. 6) of the contact surface 18 is set to a height at which the contact surface 18 approaches the rear crossbar 15 when the cushion frame 7 is at the second position.
- the protrusion 17 of the mounting bracket 11 contacts the rear crossbar 15 at a position closer to the seat surface side (that is, the upper surface side of the seat cushion 2) in the event of a rearward collision of the vehicle. Since the load from the crossbar 15 is received, it is easy to suppress variations in the angle of inclination of the rear link arm 13 due to deformation of the seat. In addition, it is possible to extend the protrusion 17 upward to the Z1 side even for a seat with a high seat height, and even with such a seat, the inclination angle of the rear link arm 13 varies. can be suppressed.
- the protrusion 17 is provided at a position where it can contact the rear crossbar 15, which serves as the rotation axis of the rear link arm 13 on the side of the cushion frame 7, in the event of a rear collision of the vehicle. Nearby, load is received at a position close to the load input point. Therefore, the deformation of the seat 1 can be reduced as compared with a structure in which the load is received at a position away from the load input point. Therefore, it is possible to suppress variations in the angle of inclination of the rear link arm 13 . Further, in the present embodiment, since the mounting bracket 11 mounted on the upper rail 10 of the guide rail 5 has a structure in which the projection 17 extends upward in the Z1 direction, the height from the guide rail 5 to the cushion frame 7 is high. Even if it is a sheet structure, it can be easily accommodated by extending the protrusion 17 .
- a regulating portion portion corresponding to the protrusion 17 of the present embodiment that regulates the link tilt angle at the time of tilting backward on the link side. is provided, if the distance between the guide rail 5 and the cushion frame 7 increases, interference with other parts will occur if the restricting portion is extended upward. Further, if the link side is to be used as it is, it is necessary to newly provide a structure that abuts on the restricting portion.
- the mounting bracket 11 of the link mechanism 6 is provided with the protrusion 17, even if the distance between the guide rail 5 and the cushion frame 7 is increased, the height of the protrusion 17 is adjusted accordingly. can be easily handled by changing the
- the height H0 of the contact surface 18 forms a gap between the contact surface 18 and the rear crossbar 15 when the cushion frame 7 is in the second position. It is preferably set as high as possible.
- the contact surface 18 of the protrusion 17 and the cushion frame 7 are in contact with each other. It is possible to reliably avoid contact with the rear crossbar 15, which is the contact portion. As a result, it is possible to prevent the occurrence of abnormal noise due to contact between the contact surface 18 and the rear crossbar 15 while the vehicle is running.
- a reinforcing plate 16 that reinforces 13 is further provided.
- the contact surface 18 of the protrusion 17 has a length L1 (see FIG. 6) in the vehicle front-rear direction X with which the rear crossbar 15 and the reinforcing plate 16 can contact at the same time.
- the contact surface 18 of the protrusion 17 is widened in the vehicle front-rear direction X, so that the contact surface 18 receives not only the load from the rear crossbar 15 but also the load from the reinforcing plate 16 . It is possible to prevent the load from being concentrated on one point on the contact surface 18 at the time of a rear collision.
- the contacted portion of the cushion frame 7 is the rear crossbar 15 extending in the width direction Y of the seat.
- a pair of protrusions 17 are provided on both sides in the width direction Y of the sheet 1 so as to be spaced apart from each other in the width direction Y. As shown in FIG. The pair of protrusions 17 are arranged in a range inside the cushion frame 7 in the width direction Y. As shown in FIG.
- the pair of projections 17 are arranged inside the cushion frame 7 in the width direction Y, so that the projections 17 are reliably attached to the rear crossbar 15 even when the seat is deformed in the width direction Y. Abutment is possible, and deformation in the width direction Y of the sheet can be suppressed.
- the rear crossbar 15 can be reliably received by the pair of projections 17, and the side surfaces of the projections 17 and the rear crossbar 15 can be securely received. Deformation in the width direction Y of the seat 1 can also be suppressed by the contact of structures such as the cushion frame 7 and the rear link arm 13 .
- a conventional seat structure for example, a conventional seat structure that restricts the rearward inclination of the seat and also restricts the displacement in the seat width direction (for example, the contact portion on the link side and the bracket side as described in Japanese Patent No. 6838492)
- the abutting portion cannot contact the regulating portion at a predetermined position when the seat is largely displaced in the seat width direction, and the rearward inclination of the seat and the displacement in the seat width direction Y are restricted. may not be possible.
- the rear crossbar 15 and the rear crossbar 15 are paired even if the seat is deformed in either width direction Y. It is possible to prevent the sheet from tilting backward by reliably contacting the projection 17 . Moreover, the position of the cushion frame 7 and displacement in the width direction Y can be reliably suppressed by the cushion frame 7, the rear link arm 13, etc., in addition to the rear cross bar 15 coming into contact with the protrusion 17.
- FIGS. In the vehicle seat of this embodiment, as shown in FIGS. is set higher than a front side portion 18 a including the front end of the contact surface 18 . Specifically, the rear portion 18b of the contact surface 18 is inclined so as to become higher toward the vehicle rear X2 side.
- the rear cross bar 15 can be positioned at a predetermined position when the rear cross bar 15 comes into contact with the protrusion 17 .
- the contact surface 18 can receive the rear crossbar 15 at a plurality of locations, and the load at the time of a rear collision can be distributed over a wide range of the contact surface 18 .
- the inner peripheral surface of the arc-shaped recess formed in the link arm and the outer peripheral surface of the columnar crossbar fixed to the cushion frame abut against each other.
- the abutment surfaces of the link arm and crossbar are arcuately parallel to each other. For this reason, it is necessary to widen the range of the arcuate concave portion on the receiving side in order to absorb variations in the relative positions of the contact surfaces.
- the rear portion of the contact surface 18 of the protrusion 17 is relatively high to absorb variations in displacement of the rear crossbar 15, and the rear crossbar 15 is held at a predetermined position. Positioning is possible.
- the rear portion 18b of the abutment surface 18 is slanted so that it rises in a gentle arc from the vicinity of the middle of the abutment surface 18, so that the area of contact with the rear crossbar 15 is increased. It is possible to prevent the load from increasing and concentrating on one point on the contact surface 18 .
- the mounting bracket 11 of the link mechanism 6 has the rear support portion 11b that rotatably supports the lower portion of the rear link arm 13. As shown in FIG. Therefore, the rear support portion 11b and the projecting portion 17 are integrally formed so as to form part of the mounting bracket 11. As shown in FIG.
- both upper and lower portions of the rear link arm 13 are simultaneously restrained by one mounting bracket 11 in the event of a rear collision. That is, the lower portion of the rear link arm 13 is restrained by the rear support portion 11 b of the mounting bracket 11 , and the upper portion of the rear link arm 13 is restrained by the protrusion 17 via the rear crossbar 15 . As a result, it is possible to reliably stop the movement of the rear link arm 13 and the cushion frame 7 connected thereto toward the vehicle rear X2 side.
- the rear crossbar 15 was taken as an example of the abutted portion that abuts against the projection 17 integrally formed on the mounting bracket 11 of the link mechanism 6.
- the abutted portion of the present invention may be any portion that constitutes the cushion frame 7 , and may be, for example, a portion of the cushion frame 7 other than the rear crossbar 15 .
- the contacted portion may be the front crossbar 14 of the cushion frame 7 .
- the protrusion 17 protrudes upward Z1 from the upper surface of the mounting bracket 11 in the range between the front side support portion 11a and the rear side support portion 11b of the mounting bracket 11 shown in FIG. In the event of a collision, the protrusion 17 can come into contact with the front crossbar 14 .
- the protrusion 17 has sufficient rigidity to prevent deformation when the rear crossbar 15 comes into contact with the rear crossbar 15 during a rearward collision of the vehicle.
- the protrusion 17 may be buckled to absorb the impact, thereby mitigating the impact on the seated person.
- the height of the protrusion 17 is increased.
- the shock may be absorbed by buckling.
- the polygonal line 20 shown in FIG. 11 or the groove 21 shown in FIG. 12 may be formed in the projecting portion 17. These fold lines 20 and grooves 21 enable the protrusion 17 to be intentionally buckled to absorb the impact rather than being accidentally buckled.
- a reinforcing portion such as a rib 22 or a bead may be added.
- a vehicle seat includes a seat cushion and a link mechanism capable of adjusting the height of the seat cushion, wherein the link mechanism includes a cushion frame that supports the seat cushion, a mounting bracket that is directly or indirectly mounted on the floor of the vehicle compartment; a first position while the cushion frame is maintained parallel to the mounting bracket; a plurality of link arms linking the cushion frame and the mounting bracket so as to be movable between the side position and the second position; It is characterized by comprising a protruding projection having a contact surface on the upper surface side with which a contacted portion, which is a part of the cushion frame, can contact when the vehicle is rear-impacted.
- the attachment bracket attached to the floor of the vehicle compartment of the link mechanism is integrally formed with the protrusion extending upward. It is When the seat tilts backward during a vehicle collision, the projection abuts the abutted portion, which is a part of the cushion frame, with the abutment surface on the upper surface side of the projection, thereby suppressing the tilt angle of the link arm. is possible. As a result, the abutted portion fixed to the cushion frame abuts directly on the mounting bracket, which has sufficient strength to receive the load. There is no need to provide a separate member). As a result, it is possible to suppress the rearward inclination of the seat at the time of a rear collision while suppressing an increase in the weight of the seat.
- the contacted portion rotatably supports the link arm, and the height of the contact surface is such that when the cushion frame is at the second position, the contact surface is at the same height as the contact surface. It is preferable to set the height close to the abutted portion.
- the protrusion of the mounting bracket abuts against the abutted portion at a position closer to the seat surface side (that is, the upper surface side of the seat cushion) in the event of a rearward collision of the vehicle, thereby preventing the abutment from the abutted portion. Since the load is received, it is easy to suppress variations in the angle of inclination of the link arm due to deformation of the seat. In addition, it is possible to extend the protrusions upward to accommodate a seat with a high seating surface, and it is possible to suppress variations in the angle of inclination of the link arm even in such a seat. .
- the height of the contact surface is set to a height that allows a gap to be formed between the contact surface and the contacted portion when the cushion frame is in the second position. preferably.
- the contact surface of the protrusion and the contact portion of the cushion frame are in contact with each other. It is possible to reliably avoid contact. As a result, it is possible to prevent the occurrence of abnormal noise due to contact between the contact surface and the contacted portion during vehicle travel.
- the link mechanism further includes a reinforcing plate that is fixed to a connecting portion between the link arm and the contact portion and that reinforces the link arm, and the contact surface of the projection portion It is preferable that the abutted portion and the reinforcing plate have lengths in the longitudinal direction of the vehicle that can be abutted at the same time.
- the contact surface of the protrusion can be widened in the longitudinal direction of the vehicle, so that the contact surface can receive not only the load from the contacted portion but also the load from the reinforcing plate, thereby preventing a rear collision. It is possible to prevent the load from concentrating at one point on the contact surface.
- the abutted portion is a crossbar extending in the width direction of the seat, and a pair of the protrusions are provided so as to be spaced apart from each other in the width direction, and the pair of protrusions are: It is preferable that the cushion frame is arranged in a range inside the cushion frame in the width direction.
- the protrusions since the pair of protrusions are arranged inside the cushion frame in the width direction, the protrusions can reliably contact the crossbar even when the seat is deformed in the width direction. It is possible to suppress deformation in the width direction of the sheet.
- At least part of the rear portion of the contact surface including the rear end of the contact surface in the vehicle front-rear direction is higher than the front portion including the front end of the contact surface. preferably set.
- the contacted portion is positioned at the predetermined position when it contacts the projection.
- the abutment surface can receive the abutted portion at a plurality of locations, and the load at the time of a rear collision can be distributed over a wide range of the abutment surface.
- the rear portion of the abutment surface is inclined so as to gradually draw an arc toward the rear side of the vehicle.
- the seat of this embodiment it is possible to suppress the rearward inclination of the seat during a rear collision while suppressing an increase in the weight of the seat.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
(1)本実施形態の車両用シートは、図1~2に示されるように、着座者の臀部が当接可能なシートクッション2と、シートクッション2の高さを調節可能なリンク機構6とを備える。リンク機構6は、図2~6に示されるように、シートクッション2を支持するクッションフレーム7と、車室の床部に直接または間接的に取り付けられる一対の取付ブラケット11と、クッションフレーム7が一対の取付ブラケット11に対して平行を維持しながら第1位置と、当該第1位置に対して車両後方X2側かつ下方Z2側の位置の第2位置との間で移動し得るように、クッションフレーム7と取付ブラケット11をリンク結合する複数のリンクアームとしての一対の前側リンクアーム12および一対の後側リンクアーム13と、クッションフレーム7の一部である被当接部としての後側クロスバー15と、突起部17とを備える。
(A)上記の実施形態では、リンク機構6の取付ブラケット11に一体形成された突起部17に当接する被当接部として、後側クロスバー15を例に挙げて説明したが、本発明はこれに限定されるものではない。本発明の被当接部は、クッションフレーム7を構成する部分であればよく、例えば、クッションフレーム7における後側クロスバー15以外の部位であってもよい。例えば、被当接部は、クッションフレーム7における前側クロスバー14であってもよい。その場合、突起部17は、図2に示される取付ブラケット11の前側支持部11aと後側支持部11bとの間の範囲において当該取付ブラケット11の上面から上方Z1に突出すれば、車両の後方衝突時において突起部17は上記の前側クロスバー14に当接することが可能である。
前記実施形態をまとめると以下のとおりである。
Claims (7)
- シートクッションと、前記シートクッションの高さを調節可能なリンク機構とを備える車両用シートであって、
前記リンク機構は、
前記シートクッションを支持するクッションフレームと、
前記車室の床部に直接または間接的に取り付けられる取付ブラケットと、
前記クッションフレームが前記取付ブラケットに対して平行を維持しながら第1位置と、当該第1位置に対して車両後方側かつ下方側の位置の第2位置との間で移動し得るように、前記クッションフレームと取付ブラケットをリンク結合する複数のリンクアームと、
前記取付ブラケットに一体に形成され、当該取付ブラケットの上面から上方に突出する突起部であって、上面側において前記車両の後方衝突時に前記クッションフレームの一部である被当接部が当接可能な当接面を有する突起部と
を備える、
ことを特徴とする車両用シート。 - 請求項1に記載の車両用シートにおいて、
前記被当接部は、前記リンクアームを回転自在に支持し、
前記当接面の高さは、前記クッションフレームが前記第2位置にある状態で前記当接面が前記被当接部に近接する高さに設定されている、
ことを特徴とする車両用シート。 - 請求項2に記載の車両用シートにおいて、
前記当接面の高さは、前記クッションフレームが前記第2位置にある状態で前記当接面と前記被当接部との間に隙間を形成可能な高さに設定されている、
ことを特徴とする車両用シート。 - 請求項2または3に記載の車両用シートにおいて、
前記リンク機構は、前記リンクアームおよび前記被当接部の連結部位に固定され、当該リンクアームを補強する補強板をさらに備え、
前記突起部の前記当接面は、前記被当接部および前記補強板が同時に当接可能な車両前後方向の長さを有する、
ことを特徴とする車両用シート。 - 請求項1~3のいずれか1項に記載の車両用シートにおいて、
前記被当接部は、前記シートの幅方向に延びるクロスバーであり、
前記突起部は、前記幅方向に互いに離間するように一対備えられ、
前記一対の突起部は、前記幅方向において、前記クッションフレームより内側の範囲に配置されている、
ことを特徴とする車両用シート。 - 請求項1~3のいずれか1項に記載の車両用シートにおいて、
前記当接面のうち、車両前後方向における前記当接面の後端を含む後側部分の少なくとも一部は、当該当接面の前端を含む前側部分と比較して高く設定されている、
ことを特徴とする車両用シート。 - 請求項6に記載の車両用シートにおいて、
前記当接面の後側部分は、車両後方側へ向かうにしたがって緩やかに弧を描きながら高くなるように傾斜している、
ことを特徴とする車両用シート。
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CN202280040808.5A CN117529423A (zh) | 2021-06-23 | 2022-06-16 | 车辆用座椅 |
EP22828312.3A EP4335693A1 (en) | 2021-06-23 | 2022-06-16 | Vehicle seat |
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JP2021-104127 | 2021-06-23 | ||
JP2021104127A JP2023003137A (ja) | 2021-06-23 | 2021-06-23 | 車両用シート |
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PCT/JP2022/024065 WO2022270395A1 (ja) | 2021-06-23 | 2022-06-16 | 車両用シート |
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EP (1) | EP4335693A1 (ja) |
JP (1) | JP2023003137A (ja) |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01136030U (ja) * | 1988-03-08 | 1989-09-18 | ||
JPH11115594A (ja) * | 1997-10-13 | 1999-04-27 | Toyota Motor Corp | 車両用シート |
JP2000094998A (ja) * | 1998-09-25 | 2000-04-04 | Aisin Seiki Co Ltd | 車両用シート |
JP2013112231A (ja) * | 2011-11-30 | 2013-06-10 | Tachi S Co Ltd | シート・リフター |
JP2013220784A (ja) * | 2012-04-18 | 2013-10-28 | Nhk Spring Co Ltd | 車両用シート |
JP5866159B2 (ja) | 2011-08-10 | 2016-02-17 | テイ・エス テック株式会社 | 乗物用シート |
JP5873186B2 (ja) | 2011-12-16 | 2016-03-01 | ジョンソン コントロールズ メタルズ アンド メカニズムス ゲーエムベーハー アンド カンパニー カーゲー | 事故における車両座席の後方への変位を選択的に制御し、かつ削減するための装置 |
JP6838492B2 (ja) | 2017-05-18 | 2021-03-03 | トヨタ紡織株式会社 | 乗物用シート |
-
2021
- 2021-06-23 JP JP2021104127A patent/JP2023003137A/ja active Pending
-
2022
- 2022-06-16 CN CN202280040808.5A patent/CN117529423A/zh active Pending
- 2022-06-16 EP EP22828312.3A patent/EP4335693A1/en active Pending
- 2022-06-16 WO PCT/JP2022/024065 patent/WO2022270395A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01136030U (ja) * | 1988-03-08 | 1989-09-18 | ||
JPH11115594A (ja) * | 1997-10-13 | 1999-04-27 | Toyota Motor Corp | 車両用シート |
JP2000094998A (ja) * | 1998-09-25 | 2000-04-04 | Aisin Seiki Co Ltd | 車両用シート |
JP5866159B2 (ja) | 2011-08-10 | 2016-02-17 | テイ・エス テック株式会社 | 乗物用シート |
JP2013112231A (ja) * | 2011-11-30 | 2013-06-10 | Tachi S Co Ltd | シート・リフター |
JP5873186B2 (ja) | 2011-12-16 | 2016-03-01 | ジョンソン コントロールズ メタルズ アンド メカニズムス ゲーエムベーハー アンド カンパニー カーゲー | 事故における車両座席の後方への変位を選択的に制御し、かつ削減するための装置 |
JP2013220784A (ja) * | 2012-04-18 | 2013-10-28 | Nhk Spring Co Ltd | 車両用シート |
JP6838492B2 (ja) | 2017-05-18 | 2021-03-03 | トヨタ紡織株式会社 | 乗物用シート |
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CN117529423A (zh) | 2024-02-06 |
JP2023003137A (ja) | 2023-01-11 |
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