JP5034644B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

  For a seat (vehicle seat) provided in a vehicle, for example, as shown in Patent Document 1 and Patent Document 2, when the seat back is folded to the seat cushion side, the seat cushion moves to the seat back side (rear side). There is a type to do.

  Thus, in the configuration in which the seat cushion moves relative to the floor, it is necessary to provide a recess in the seat cushion so as not to interfere with the fixing member fixed on the floor. However, the recess remains even when the fixing member is separated from the seat cushion.

JP 2002-240607 A JP 2003-252095 A

  This invention considers the said fact and makes it a subject to obtain the vehicle seat which can obstruct | occlude the recessed part for fixing member accommodation in the state which the seat cushion spaced apart from the fixing member on the floor.

In the invention according to claim 1, a seat cushion disposed on a floor of a vehicle body, a support member that supports the seat cushion so as to be relatively movable with respect to the floor, a fixing member fixed to the floor, A seat cushion is provided on the seat cushion so as to accommodate the fixing member and avoid interference when the seat cushion is moved relative to the seat cushion, and is stretched over the fixing member and the seat cushion. A string member that is in a relaxed state in an approaching state and a tensioned state in a separated state, and is formed separately from the string member and is attached to the string member by extending the skin of the seat cushion, and the relaxation of the string member having a, and an extension portion for closing at least a portion of the recess nervous in the tension of the string member is opened the recess relaxes in the state It is characterized in.

  In this vehicle seat, the seat cushion can be moved relative to the floor, but due to this relative movement, the seat cushion is also moved relative to (approached or separated from) the fixing member fixed to the floor. Since the recess is provided in the seat cushion, the fixing member is accommodated in the recess when the seat cushion is relatively moved, and interference between the seat cushion and the fixing member is avoided.

This vehicle seat has a string member and an extension. The string member is stretched between the fixing member and the seat cushion, and is in a relaxed state when the seat cushion is relatively close to the fixing member, and is in a tensioned state when the seat cushion is separated. The extension part is formed separately from the string member and is attached to the string member by extending the skin of the seat cushion. And since the extension part relaxes and opens the recess in the relaxed state of the string member, the accommodation of the fixing member in the recess is not hindered. The extension portion is tensioned in a tensioned state of the string member (a state in which the epidermis is tight) and closes at least a part of the recess.

  As described above, according to the present invention, the recess for accommodating the fixing member can be at least partially closed in a state where the seat cushion is separated from the fixing member on the floor.

Moreover, the recess for accommodating the fixing member can be closed with a simple structure in which only the string member and the extension are provided and the seat cushion is separated from the fixing member on the floor.

The invention according to claim 2 is the invention according to claim 1 , further comprising a seat back, wherein the fixing member is a lower arm that rotatably supports the seat back. To do.

  Since this vehicle seat is provided with a seat back, the back (back portion) of the seat cushion occupant can be supported by the seat back. Then, the seat back can be rotated to a desired angle by the lower arm. At this time, even if the seat cushion moves relative to the floor and approaches the lower arm, the lower arm can be accommodated in the recess of the seat cushion. When the seat cushion is separated from the lower arm, the recess can be at least partially closed by the closing member.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the support member is attached at one end side to the center of rotation of the seat back and rotates integrally with the seat back, so The side has a link mechanism for supporting the seat back side portion of the seat cushion.

  Therefore, when the seat back rotates, the seat back side portion of the seat cushion is also moved by the link mechanism. That is, the seat cushion can be moved relative to the floor in conjunction with the pivoting movement of the seat back.

  Moreover, the link mechanism has one end side attached to the seatback pivot center and pivots integrally with the seatback. For example, compared with a configuration in which one end side is attached to a position other than the seatback pivot center. The rotation center of the seat back and the attachment portion of the link mechanism can be shared, and the mechanism is simple.

  Since this invention set it as the said structure, the recessed part for fixing member accommodation can be obstruct | occluded in the state spaced apart from the fixing member on the floor.

  1A and 2A schematically show a vehicle seat 12 according to a first embodiment of the present invention in a side view. 1 (B) and 2 (B) schematically show a seat cushion 16 and a lower arm 22 (details will be described later) constituting the vehicle seat 12 in a plan view.

  In each drawing, the front side of the vehicle is indicated by an arrow FR, the vehicle width direction is indicated by an arrow W, and the upper side is indicated by an arrow UP. Some vehicle seats are of a type that can rotate around the center of rotation in the vertical direction, and the front of the vehicle may not coincide with the front of the vehicle seat due to the rotation. The seat 12 is described as being installed facing the front of the vehicle. In the following, “outside in the width direction” means an outside (a position relatively far from the center line CL) when viewed from the center line CL of the vehicle seat, It means the inner side (a position relatively close to the center line CL) when viewed from the center line CL.

  As shown in FIGS. 1A and 2A, a vehicle seat 12 is installed on a floor 14 of a vehicle body (the whole image is not shown), and a seat cushion 16 on which an occupant can sit, and a seat And a seat back 18 capable of supporting the back surface (back portion) of an occupant (sitting person) seated on the cushion 16. Further, a headrest 20 capable of supporting the seated person's head is provided on the upper portion of the seat back 18.

  As shown in FIG. 1B and FIG. 2B, a pair of lower arms 22 is erected from the floor 14 at a rear position of the seat cushion 16 and fixed to the floor 14. The lower arm 22 is arranged at a predetermined interval in the vehicle width direction (arrow W direction).

  In the vicinity of the upper end of the lower arm 22, a rotation support portion 24 that supports the seat back 18 so as to be rotatable is set. The seat back 18 rotates about the rotation support portion 24, for example, increases the inclination angle to the rear side, or folds to the front side (arrow A direction) as shown in FIG. Can be drunk. The seat back 18 can be fixed at an arbitrary angle by a fixing mechanism (not shown).

  A rear side link 26 is provided on the upper part of each lower arm 22. One end side of the rear side link 26 is attached to the rotation support part 24, and the rear side link 26 rotates around the rotation support part 24 integrally with the rotation operation of the seat back 18.

  A pair of support arms 28 extending upward are provided from the rear end side of the seat cushion 16. Each of the support arms 28 is rotatably connected at a connection point 30 set on the other end side of the rear side link 26.

  On the other hand, a hinge 32 is provided near the lower surface of the front side of the seat cushion 16, and one end side of the front side link 34 is rotatably connected to the hinge 32 at a connection point 36. The other end side of the front side link 34 is rotatably connected to a hinge 40 provided on the floor 14 at a connection point 38.

  As can be seen from FIG. 1A, in the normal state, the seat cushion 16 is supported by the front side link 34 and the rear side link 26 so that the occupant can be seated and in a posture (sitting state). ).

  When the seat back 18 is tilted forward in the direction of arrow A around the rotation support portion 24 from this seated state, the rear side link 26 also rotates around the rotation support portion 24 integrally with the seat back 18. 30 moves to the rear side, that is, to the position shown in FIG. At this time, the hinge 32 on the front side rotates at the connection point 30 with respect to the seat cushion 16 and at the connection point 38 with respect to the floor 14, so that the connection point 38 is set as shown in FIG. It rotates as the center and falls to the rear side, and the connecting point 36 moves to the rear side (that is, the position shown in FIG. 2B).

  By such rotation of the rear side link 26 and the front side link 34, the seat cushion 16 moves relative to the floor 14 so as to sink backward and downward. At this time, the seat back 18 is tilted forward in the direction of arrow A around the rotation support portion 24 and is substantially horizontal so as to overlap the seat cushion 16. As a result, the vehicle interior can be secured widely, and for example, it is possible to effectively use the space such as placing luggage. Hereinafter, this state is referred to as a storage state.

  When the seat back 18 is raised in the direction of the arrow B, the operation is reverse to the case where the seat back 18 is tilted forward as described above, and the seat cushion 16 can be returned to the posture shown in FIG. Of course, the seat cushion 16 is not limited to the posture shown in FIG.

  As shown in FIGS. 1B and 2B, when the seat cushion 16 is viewed in plan, two slits 42 that are cut forward toward the front side are formed on the rear end side 16 </ b> B of the seat cushion 16. Yes. Each of the slits 42 is formed at a position corresponding to the lower arm 22. The lower arm 22 is accommodated in the slit 42 so that the seat cushion 16 and the lower arm 22 do not interfere with each other when the seat cushion 16 moves relative to the floor 14.

  As shown in detail in FIGS. 3 to 6, the skin 44 of the seat cushion 16 is extended so as to extend into the slit 42 corresponding to the three sides surrounding the slit 42, and the extension 46 is configured. Has been. Further, a cylindrical support portion 48 is formed along the extended end of the extension portion 46. The cylindrical support portion 48 is opened toward the rear side. Since the skin 44 is made of a stretchable material or a raw material, the extension portion 46 is stretched and tensioned when, for example, a tensile force is applied.

  An endless band 50 is wound around the lower arm 22, and a part of the band 50 is fixed to the rear end side 22 </ b> B of the lower arm 22. On the other hand, the front portion of the band 50 is inserted into the cylindrical support portion 48, and is partially fixed to the skin 44 at the front end side 42 </ b> F of the slit 42. The band 50 is an example of a string member according to the present invention, and the extension portion 46 constitutes a closing member according to the present invention.

  As shown in FIGS. 2B, 5, and 6, the length of the band 50 is such that when the seat cushion 16 moves to the rear side, the extension portion 46 is also relaxed by being relaxed. The slit 42 is set so as not to be covered. Furthermore, as shown in FIGS. 1B, 3 and 4, the length of the band 50 is such that when the seat cushion 16 moves forward, the extension 46 is also tensioned and tensioned. It is also set so that the slit 42 is partially covered by the extended portion 46 in the state (in this embodiment, the extended portion 46 has two triangular shapes).

  Next, the operation of the vehicle seat 12 of this embodiment will be described.

  In the vehicle seat 12, the seat back 18 is released from the seating state shown in FIG. Can be rotated. As a result, as shown in FIG. 1 (B), the seat back 18 is moved forward, and in conjunction with this, the seat cushion 16 is moved so that the seat cushion 16 sinks backward and downward, and stored. State. At this time, the seatback 18 that has been tilted forward overlaps the seat cushion 16, so that the vehicle interior can be secured widely.

  Here, in the present embodiment, the seat cushion 16 is provided with the slit 42, and when the seat cushion 16 moves to the rear side of the vehicle and approaches the lower arm 22, the lower arm 22 moves while being accommodated in the slit 42. .

  By the way, in the configuration in which the slit 42 is simply provided in the seat cushion 16, the slit 42 is opened in the seated state, that is, in the state where the seat cushion 16 moves forward and the lower arm 22 comes out of the slit 42. . In contrast, in the present embodiment, as shown in FIGS. 1A, 3 and 4, when the seat cushion 16 moves forward, an endless shape provided between the lower arm 22 and the seat cushion 16 is provided. Band 50 is in tension. And the extension part 46 comprised by extending the outer skin of the seat cushion 16 is also tense, and the slit 42 is partially covered and closed. That is, the width of the slit 42 when the seat cushion 16 is viewed in plan can be partially reduced.

  As described above, the length of the band 50 is relaxed when the seat cushion 16 is moved rearward, and the extension portion 46 is also relaxed so that the extension portion 46 does not cover the slit 42. Is set to For this reason, the operation | movement which accommodates the lower arm 22 in the slit 42 does not become difficult or impossible.

  In FIG. 7, the vehicle seat 62 according to the second embodiment of the present invention is partially shown only in the vicinity of the seat cushion 16 and the lower arm 22. In the second embodiment, as compared with the first embodiment, only the shape of the extension portion 64 of the seat cushion 16 is different. Therefore, only the extension portion 64 will be described below, and the description of other configurations will be omitted. Omitted.

Each of the extended portions 64 according to the second embodiment is further extended from the extended portion 46 of the first embodiment so that the tip portions overlap each other in the tension state of the band 50. In other words , for example, when paying attention to the extension portion 64A on the outer side in the width direction, the extension portion 64A is farther from the portions 50A and 50B of the band 50 that are substantially present in the slit 42 (width direction). It extends to the inner part 50B. Similarly, when attention is paid to the extension portion 64B on the inner side in the width direction, the extension portion 64B extends to the portion 50A far (outside in the width direction) of the band 50 in the slit 42.

  Therefore, in the second embodiment, the slit 42 when the seat cushion 16 is viewed in plan can be closed in a wider range in a state where the seat cushion 16 moves forward and is separated from the lower arm 22.

  FIG. 8 shows a vehicle seat 72 according to the third embodiment of the present invention. Hereinafter, the same components and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate. Moreover, in 3rd embodiment, since the whole structure of the vehicle seat is the same as 1st embodiment, description is abbreviate | omitted.

  In the third embodiment, the rear end of the band 74 is fixed to the front end side 22 </ b> F of the lower arm 22 by a fixing member 76 at one central portion. Similarly to the first embodiment, the length of the band 74 is such that when the seat cushion 16 moves rearward, the band 74 is relaxed and the extension portion 46 is also relaxed so that the slit 42 is not covered (the covering portion is reduced). When the seat cushion 16 moves to the front side, the extension 46 is tensioned and the slit 42 is covered.

  In particular, in the third embodiment, as described above, the rear end of the band 74 is fixed by one fixing member 76. Therefore, as can be seen from FIG. 8, in the state where the seat cushion 16 has moved forward, the area covering the slit 42 is larger than in the first embodiment.

  FIG. 9 shows a vehicle seat 82 according to the fourth embodiment of the present invention. Hereinafter, the same components and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

  In the seat cushion 16 of the fourth embodiment, two recesses 86 are formed instead of the slit 42 of the first embodiment. The recess 86 is formed at a boundary portion between the rear end side 16B and the side side 16S of the seat cushion 16, that is, at both end positions in the width direction. Further, in the fourth embodiment, the lower arm 22 is fixed to the floor 14 on the outer side in the width direction of the seat back 18 (position farther from the center line CL of the vehicle seat 82) than in the first embodiment. Yes. That is, the recess 86 according to the fourth embodiment is formed at a position corresponding to the position of the lower arm 22 so that interference between the seat cushion 16 and the lower arm 22 can be prevented.

  In the fourth embodiment, instead of the band 50 of the first embodiment, a wire 90 is attached between the lower arm 22 and the seat cushion 16. In other words, the front end of the band 50 is fixed to the corner portion between the side 16 </ b> S of the seat cushion 16 and the recess 86, and the rear end is fixed to the inner surface 22 </ b> S near the front end of the lower arm 22.

  Further, in the fourth embodiment, the extension portion 88 of the seat cushion 84 is formed in a substantially triangular shape so as to cover the recess 86, and a linear cylindrical support in a plan view is provided at the extended end. A portion 92 is formed. An intermediate portion of the wire 90 is inserted into the cylindrical support portion 92. The wire 90 is an example of a string member according to the present invention, and the extension portion 88 constitutes a closing member according to the present invention.

  The length of the wire 90 is such that when the seat cushion 84 moves to the rear side, it is relaxed so that the extension portion 88 is also relaxed so that the slit 42 is not covered (the covering area is reduced). When it moves to the side, it is set so that the extension part 46 may be tensioned and the slit 42 may be covered.

  Thus, even if it is the structure provided with the seat cushion 84 in which the recessed part 86 was formed in the both ends position of the width direction, this recessed part 86 can be partially covered in the state which the seat cushion 84 moved to the front side. It becomes possible.

  In the above description, the rear side link 26, the front side link 34, and the like have been described as the support member according to the present invention, that is, the member that supports the seat cushion so as to be relatively movable with respect to the floor. It is not limited to a simple link, and it is not necessary to be linked to the forward movement of the seat back. However, when the link is used as in the above embodiment, the structure for supporting the seat cushion is simplified. Further, it is preferable to link the seat back to the rain-carrying operation because operability and convenience are improved. The direction in which the seat back moves is also not particularly limited, and for example, the seat back may move relative to the floor so as to jump up obliquely upward.

  When the link is used as the support member, it is not necessary that one end side of the rear link 26 is attached to the rotation center (the rotation support portion 24) of the seat back 18 as in the above embodiment. You may attach to parts other than the rotation center. If the one end side of a link and the rotation center of the seat back 18 are made to correspond like the said embodiment, a member can be shared.

  As the fixing member according to the present invention, the lower arm has been described in the above embodiment, but the present invention is not limited to this. In other words, any member that approaches or separates by relative movement of the seat cushion with respect to the floor and that requires the seat cushion to be provided with a recess for preventing interference is a fixing member according to the present invention.

  The closing member according to the present invention is not limited to the one composed of the bands 50 and 74, the wire 90, and the extension portions 46, 64, and 88. In short, the seat cushion is formed from the fixing member (lower arm). What is necessary is just to close | slit the slit 42 and the recessed part 86 by becoming a tension | tensile_strength when it spaces apart. When the closing member is configured using a band or a wire and an extension portion obtained by extending the skin of the seat cushion as in the above embodiment, a simple structure is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The vehicle seat of 1st embodiment of this invention is shown in a normal state, (A) is a side view, (B) is a top view of a seat cushion and a lower arm. BRIEF DESCRIPTION OF THE DRAWINGS The vehicle seat of 1st embodiment of this invention is shown in the front-back state of a seat back, (A) is a side view, (B) is a top view of a seat cushion and a lower arm. It is the perspective view which looked at the slit vicinity of the vehicle seat of 1st embodiment of this invention from diagonally forward in the normal state of the seat back. It is the perspective view which looked at the slit vicinity of the vehicle seat of 1st embodiment of this invention from diagonally backward in the normal state of a seat back. It is the perspective view which looked at the slit vicinity of the vehicle seat of 1st embodiment of this invention from diagonally forward with the seat back forward-turned state. It is the perspective view which looked at the slit vicinity of the vehicle seat of 1st embodiment of this invention from diagonally backward in the state which the seat back was tilted forward. It is a top view which shows the vicinity of the slit of the vehicle seat of 2nd embodiment of this invention. It is a top view which shows the vicinity of the slit of the vehicle seat of 3rd embodiment of this invention. It is a top view which shows the vicinity of the slit of the vehicle seat of 4th embodiment of this invention.

Explanation of symbols

12 Vehicle seat 14 Floor 16 Seat cushion 18 Seat back 20 Headrest 22 Lower arm (fixing member)
24 rotation support part 26 back side link (link mechanism, support member)
28 Support arm (link mechanism)
30 connecting point 32 hinge 34 front side link (supporting member)
36 connecting point 38 connecting point 40 hinge 42 slit (recess)
44 Epidermis 46 Extension (occlusion member)
48 Cylindrical support 50 Band (string member, closing member)
62 Vehicle Seat 64 Extension (Closing Member)
72 Vehicle seat 74 Band (string member, closing member)
76 Fixing member 82 Vehicle seat 86 Recess 88 Extension portion (blocking member)
90 wire (string member, closing member)
92 Cylindrical support

Claims (3)

A seat cushion placed on the floor of the car body,
A support member that supports the seat cushion so as to be relatively movable with respect to the floor;
A fixing member fixed to the floor;
A recess provided in the seat cushion for accommodating the fixing member and avoiding interference during the relative movement of the seat cushion;
A string member that is stretched over the fixing member and the seat cushion, is in a relaxed state when the seat cushion is relatively close to the fixing member, and is in a tension state when separated.
The cord member is formed separately from the cord member and is attached to the cord member by extending the skin of the seat cushion. The cord member relaxes in the relaxed state, opens the concave portion, and tensions in the tensioned state of the cord member. An extension that closes at least a portion of the recess;
A vehicle seat comprising: A seat back,
A lower arm that rotatably supports the seat back, the fixing member;
The vehicle seat according to claim 1 , wherein: A link mechanism in which one end side is attached to a rotation center of the seat back and rotates integrally with the seat back, and the other end side supports a seat back side portion of the seat cushion, the support member;
The vehicle seat according to claim 1 , further comprising:

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