JP2007015447A - Vehicle seat and vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat and a vehicle capable of effectively protecting a driver etc. when the vehicle goes in lateral collision. <P>SOLUTION: The vehicle seat 11 is equipped with a seating part 11a and a support part to support the seating part 11a on a floor panel 41. The support part is equipped with an outer supporting part 42 arranged outside the vehicle 10 about the vehicle width direction and supporting one side of the seating part 11a and an inner supporting part 43 arranged inside the vehicle about the vehicle width direction and supporting the other side of the seating part 11a. The outer supporting part 42 is equipped with a seat rail 44, side bracket 45, and the side 38a of a seat cushion pan 38. The side 38a of the seat cushion pan 38 and the side bracket 45 are coupled together by a long hole longer in the vertical direction and a projection 45b fastened in the long hole, so as to admit upward movement of one side of the seating part 11a when the vehicle 10 goes in lateral collision. The vehicle 10 as object of the invention is equipped with this seat 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle seat mounted on a vehicle floor panel, and a vehicle including the vehicle seat.

Patent Document 1 discloses a vehicle body structure that can efficiently support and absorb energy input to a vehicle body part higher than the floor tunnel from the side of the vehicle. The seat in the vehicle body structure is provided with a load direction changing member that transmits a load input from the side of the vehicle to a vehicle body part higher than the floor tunnel toward the floor tunnel. On the other hand, Patent Document 2 discloses a vehicle seat guide device that is improved with respect to the safety and installation cost of a vehicle occupant after a collision. The seat guide device includes at least one restraining element that fixes the vehicle seat at a desired position on the sliding rail, and has at least one stress deformation element that absorbs energy in the event of a collision.
JP 2001-105947 A JP 2002-178802 A

  The inventors of the present invention have intensively studied a method for protecting a passenger by establishing a strategy different from that for protecting the passenger by the conventional vehicle body structure and the vehicle seat guide device. As a result, when protecting the side of the occupant seated in the vehicle seat, various simulations were conducted focusing on the skeleton of the occupant in the sitting position. It has been found that the most effective protection is possible by restraining the occupant's waist. And based on these knowledge, it came to complete this invention.

  An object of the present invention is to provide a vehicle seat and a vehicle capable of effectively protecting a passenger in the event of a side collision of the vehicle.

  In order to achieve the above object, the invention according to claim 1 is a vehicle seat mounted on a floor panel of a vehicle, the vehicle seat including a seat portion and the floor panel. A support portion that supports the seat portion, the support portion being disposed on the vehicle outer side with respect to the vehicle width direction of the vehicle, and an outer support portion that supports one side portion of the seat portion with respect to the vehicle width direction. And an inner support portion that is disposed inside the vehicle and supports the other side portion of the seat portion, and the outer support portion is configured to allow one side portion of the seat portion to move upward. It is a summary.

  When a vehicle crashes, especially when the vehicle has a high vehicle height such as a sports utility vehicle (SUV), the inner trim such as a door trim is deformed so as to bulge inside the vehicle. there is a possibility. With respect to such a side collision, the outer side support portion of the vehicle seat according to claim 1 is provided so that the waist portion of the occupant seated on the vehicle seat is allowed to escape away from the deformed inner trim. The side part is allowed to move upward. For this reason, since direct interference between the inner trim which deform | transforms and a passenger | crew's waist | hip | lumbar part is suppressed, a passenger | crew's protection is achieved effectively. Also, at this time, one side portion of the seat portion is interposed between the deformed inner trim and the occupant's waist portion, and can also serve to restrain the occupant's waist portion appropriately, so that the occupant can be effectively protected. Is possible.

According to a second aspect of the present invention, there is provided a vehicle seat according to the first aspect, wherein the outer support portion is configured to be separable in the vertical direction.
According to this configuration, the outer side support portion of the vehicle seat can completely separate one side portion of the seat portion from the floor panel when the degree of side collision is large, that is, when the deformation amount of the inner trim is large. enable. In this case, since the direct interference between the lumbar part of the occupant seated on the vehicle seat and the inner trim is more effectively suppressed, the occupant can be more effectively protected.

  The vehicle seat according to claim 3 is the invention according to claim 1 or 2, wherein the seat includes a seat cushion pan and a seat cushion provided on an upper surface of the seat cushion pan, One side portion of the seat portion is provided with a side portion of the seat cushion pan extending in the vertical direction, and the outer support portion is a side portion of the seat cushion pan, a seat rail provided on the floor panel, A side bracket for connecting a side portion of the seat cushion pan to the seat rail, and a side hole of the seat cushion pan is provided with a long hole extending in a vertical direction, and the side bracket extends in the vehicle width direction. The gist of the invention is that a locking projection is provided so as to be locked in the elongated hole.

  According to this configuration, in the outer side support portion of the vehicle seat, the side bracket and the side portion of the seat cushion pan are connected by locking the locking projection to the upper end of the long hole. Since the long hole extends in the vertical direction, one side portion of the seat portion disposed above the side portion of the seat cushion pan is allowed to move upward with respect to the side bracket, It is restricted so as not to move in the longitudinal direction of the vehicle. Further, the one side portion of the seat portion is restricted so as not to move upward due to the weight of the seat portion, except during a side collision of the vehicle. Therefore, it is possible to adjust the position by sliding the seat along the seat rail except when the vehicle collides, and the position of the seat after adjustment may be changed unintentionally. Absent. On the other hand, when the inner trim is deformed so that it bulges to the inside of the vehicle at the time of a side collision of the vehicle, the side portion of the seat cushion pan can be released upward with respect to the side bracket. It is possible to escape away from the inner trim and suppress direct interference between the inner trim and the occupant's waist.

  The vehicle seat according to claim 4 is the invention according to claim 1 or 2, wherein the seat includes a seat cushion pan and a seat cushion provided on an upper surface of the seat cushion pan, One side portion of the seat portion is provided with a side portion of the seat cushion pan extending in the vertical direction, and the outer support portion is a side portion of the seat cushion pan, a seat rail provided on the floor panel, A side bracket that connects the side portion of the seat cushion pan to the seat rail, the seat rail is provided with a lower rail fixed on the floor panel, and an upper rail that slides along the lower rail, The side bracket and the upper rail include a long hole extending in the vertical direction and a locking protrusion locked in the long hole. It is summarized as being sintered.

  According to this configuration, the upper rail and the side bracket are connected to each other at the outer side support portion of the vehicle seat by locking the locking protrusion to the upper end of the long hole. Since the long hole extends in the vertical direction, one side portion of the seat portion disposed above the side bracket is allowed to move upward with respect to the upper rail, while in the downward direction and the vehicle front-rear direction. It is regulated not to move. Further, the one side portion of the seat portion is restricted so as not to move upward due to the weight of the seat portion, except during a side collision of the vehicle. Therefore, it is possible to adjust the position by sliding the seat along the seat rail except when the vehicle collides, and the position of the seat after adjustment may be changed unintentionally. Absent. On the other hand, when the inner trim is deformed so that it bulges toward the inside of the vehicle during a side collision, the side bracket can be released upward with respect to the upper rail. It is possible to escape and suppress direct interference between the inner trim and the occupant's waist.

  The vehicle seat according to claim 5 is the invention according to any one of claims 1 to 4, wherein the vehicle is provided with an inner trim disposed on a side of the seat portion, The gist of the invention is that one side portion of the seat portion moves upward by being pushed up by the inner trim at the time of a side collision of the vehicle.

  According to this configuration, when the inner trim is deformed so as to bulge toward the inside of the vehicle at the time of a side collision of the vehicle, one side portion of the seat portion of the vehicle seat is pushed upward by the inner trim. Moving. For this reason, since direct interference between an inner trim and a passenger | crew's waist | hip | lumbar part is suppressed, a passenger | crew's protection is achieved effectively. In addition, at this time, one side portion of the seat portion is interposed between the inner trim and the occupant's waist portion, and can also serve to properly restrain the occupant's waist portion, so that it is possible to effectively protect the occupant. It becomes.

  The vehicle seat according to claim 6 is the invention according to claim 5, wherein one side portion of the seat portion includes a waist portion of an occupant seated on the vehicle seat at the time of a side collision of the vehicle, and the inner seat. The main point is that it is interposed between the trim.

  According to this configuration, the vehicle seat is arranged such that one side portion of the seat portion of the vehicle seat is interposed between the waist portion of the occupant seated on the vehicle seat and the inner trim at the time of a side collision of the vehicle. For this reason, the seat cushion with high impact absorption provided in the seat part plays a role of absorbing the impact exerted from the inner trim and making it difficult to transmit to the occupant's waist.

  According to a seventh aspect of the present invention, there is provided the vehicle seat according to the sixth aspect of the invention, wherein one side portion of the seat portion is formed on the skeleton of the occupant seated on the vehicle seat at the time of a side collision of the vehicle. The gist is to restrain the occupant's lower back at a site corresponding to the pelvis behind the acetabulum.

  The vehicle seat according to claim 8 is the invention according to claim 6, wherein one side portion of the seat portion is an intestinal skeleton of the occupant seated on the vehicle seat at the time of a side collision of the vehicle. The gist is to restrain the occupant's lower back at a site corresponding to the bone.

  When the occupant receives inertial force in the vehicle width direction at the time of a side collision of the vehicle, the occupant's waist moves, for example, toward an inner wall such as an inner trim that defines a side portion of the passenger compartment. Further, when the vehicle collides, the inner wall may move toward the occupant's waist. When the occupant's waist is in contact with the inner wall or the like and is pressed toward the inside of the passenger compartment, a load corresponding to the pressing force exerted from the inner wall or the like is input to the occupant's waist.

  On the other hand, in the occupant in a posture sitting on the vehicle seat, the greater trochanter extending to protrude outward at the upper end of the femur and the pubic bone constituting the front surface of the pelvis are respectively provided at the front of the waist It is arranged so as to extend substantially in the vehicle width direction. In addition, a part of the iliac that constitutes the rear surface of the pelvis is arranged at the rear part of the lumbar part so as to extend substantially in the vehicle width direction. The tip of the greater trochanter protrudes outward from the side edge of the iliac, and the minimum value of the cross-sectional area of the pubic bone extending in the vehicle width direction is about one third of the minimum value of the cross-sectional area of the iliac extending in the same direction. There is only.

  For this reason, when the side surface of the lumbar portion of the occupant is pressed against the inner wall or the like, it is pressed at the rear part of the pelvis centered on the iliac rather than being pressed at the site corresponding to the greater trochanter. It has a structure that can withstand the input of a larger load. That is, when the load is input to the rear part of the pelvis, the load is received in a wider area than when the load is input to the site corresponding to the greater trochanter. Therefore, for example, when loads of the same magnitude are input, regarding the cross section of the bone orthogonal to the input direction of the load, the magnitude of the load input per unit area is lower in the iliac than in the pubic bone, The entire iliac bone can receive the load with lower stress.

  Therefore, in the vehicle seat according to claim 7, one side portion of the seat portion corresponds to the pelvis behind the acetabulum in the skeleton of an occupant seated on the vehicle seat at the time of a side collision of the vehicle. Since the occupant's waist is restrained at the site, the load applied to the occupant's waist can be received with lower stress than when restrained at the front of the waist. Therefore, since the occupant's waist is appropriately restrained in a form suitable for the occupant's lumbar skeleton, it is possible to effectively protect the occupant.

  The vehicle seat according to claim 8, wherein one side portion of the seat portion restrains the occupant's waist at a portion corresponding to the iliac bone in a skeleton of the occupant seated on the vehicle seat at the time of a side collision of the vehicle. Therefore, the load applied to the occupant's waist can be received with lower stress than when restrained at the front of the waist. Therefore, since the occupant's waist is appropriately restrained in a form suitable for the occupant's lumbar skeleton, it is possible to effectively protect the occupant.

A gist of a vehicle according to claim 9 is provided with the vehicle seat according to any one of claims 1 to 8.
When a vehicle crashes, especially when the vehicle has a high vehicle height such as a sports utility vehicle (SUV), the inner trim such as a door trim is deformed so as to bulge inside the vehicle. there is a possibility. With respect to such a side collision, the outer support portion of the vehicle seat provided in the vehicle according to claim 9 is configured to release the waist portion of the occupant seated on the vehicle seat far away from the deformed inner trim. One side portion of the seat portion is allowed to move upward. For this reason, since direct interference between the inner trim which deform | transforms and a passenger | crew's waist | hip | lumbar part is suppressed, a passenger | crew's protection is achieved effectively. Also, at this time, one side portion of the seat portion is interposed between the deformed inner trim and the occupant's waist portion, and can also serve to restrain the occupant's waist portion appropriately, so that the occupant can be effectively protected. Is possible.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle seat and vehicle which can aim at the protection with respect to a passenger | crew effectively at the time of a side collision of a vehicle can be provided.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which the present invention is embodied in a vehicle seat and a vehicle will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a skeleton in the vicinity of the pelvis of a human body, and corresponds to, for example, a perspective view of the vicinity of a pelvis 111 (pelvis) of an occupant seated on a driver's seat of a vehicle as seen from the vicinity of a steering wheel. To do. FIG. 2A is a perspective view showing the skeleton in the vicinity of the human pelvis 111 from the diagonally left rear.

  As shown in FIGS. 1 and 2A, the pelvis 111 is a ring-shaped bone between the spine and the lower limbs, and has a tough structure that supports the weight of the head, upper limbs, and trunk. The pelvis 111 is made thicker and thicker than the walls of the cranial cavity and the chest cavity, and includes two hip bones 112 that form the side surface and the front surface of the pelvis 111 and a sacrum 113 that forms the posterior wall. And the tailbone 114 (coccyx).

  The hipbone 112 occupies most of the pelvis 111 and has a relatively flat but irregular shape. Each hipbone 112 is constituted by unioning three bones of an iliac bone 121 (ilium), a sciatic bone 122 (ischium), and a pubic bone 123 (pubis). The fusion occurs around a cup-shaped joint cavity called acetabulum 125 (see Fig. 3) in which the head 171 of the femur 170 fits and at both ends of each bone.

  The iliac bone 121 is a portion that forms the side surface of the acetabulum 112 and extends so as to expand widely from the acetabulum 125 upward. The iliac 121 is divided into two parts, a large winged iliac wing (ala ossis ilium) and an iliac body 126 that includes a portion of the acetabulum 125 (see body of the ilium, see FIG. 3). The upper anterior portion of the iliac wing is the upper anterior iliac spine, the lower anterior portion is the lower anterior iliac spine, and the upper posterior portion is the superior-superior iliac spine 127. spine), the lower posterior portion is called the lower posterior iliac spine. The iliac bone 121 is firmly connected to the sacrum 113 on the inner surface called an auricular surface 128 (auricular surface).

  The ear-like surface 128 of the sacrum 113 and the ear-like surface 128 of the iliac 121 form a sacroiliac joint 129 (articulatio sacroiliaca, see FIG. 2A). The joint surface of the sacroiliac joint 129 has a narrow joint space that contains synovial fluid and is covered with cartilage. The sacroiliac joint 129 is a joint that exhibits little mobility, but has a characteristic structure that the joint surface has irregularities and is surrounded by a plurality of strong ligaments, Allow limited relative movement between sacrum 113 and iliac 121. That is, as shown in FIGS. 2A and 2B, the sacroiliac joint 129 allows the sacrum 113 to move such that each iliac bone 121 rotates in the front-rear direction.

  The sciatica 122 forms the lower posterior site of the hipbone 112 and is divided into a body of ischium and a sciatic branch 141 (ramus of ischium). The sciatic body constitutes the back third of the acetabulum 125. The lower part of the sciatic body is an ischial tuberosity, and supports the trunk of the occupant P in the sitting posture. The sciatic branch 141 is a part that connects a thin flat sciatic bone to the pubic branch 151.

  The pubic bone 123 is a bone having an irregular shape composed of the pubic body 152 (see FIG. 3) and the pubic branch 151. The pubic body 152 constitutes the anterior third of the acetabulum 125. The pubic branch 151 includes an upper pubic branch 151a and a lower pubic branch 151b. The suprapubic branch 151a extends from the pubic body 152 to the median sagittal plane and is articulated with the corresponding suprapubic branch 151a on the opposite side. This joint is called a pubic symphysis 153 and includes a cartilage plate, so that it can move slightly. The subpubic branch 151b is combined with the sciatic branch 141 to form a bottom arch of an obturator foramen. The lower pubic branch 151b is also connected to the lower pubic branch 151b on the opposite side by the pubic joint 153, similarly to the upper pubic branch 151a.

  A femoral head 171 and a greater trochanter 172 extending laterally from the femoral head 171 exist at the upper end of each femur 170. As shown in FIG. 1, the tip of the greater trochanter 172 usually protrudes slightly toward the outside of the body from the side end of the pelvis 111. Further, as shown in FIG. 3, the left and right iliac bones 121 located at the same height as the greater trochanter 172 have the acetabulum 125 located on the outermost side, and the upper posterior iliac spine 127 or the lower posterior intestine. It is formed in a taper shape that narrows toward the rear so that the portion of the osteophyte is located on the innermost side. That is, in the lumbar skeleton located at the same height as the greater trochanter 172, the greater trochanter 172 is the bone that is disposed most outside the body.

  FIG. 3 is a plan sectional view schematically showing the waist L of the occupant P in a posture seated on the seat 11 a of the vehicle seat 11. As shown in the drawing, an inner side wall 13 (for example, a side surface of an inner trim such as a door trim) that divides a side portion of the passenger compartment is disposed on the side of the vehicle seat 11. Similar to the vehicle seat 11 and the occupant P, the inner side wall 13 is disposed so as to extend in the front-rear direction of the vehicle.

  Now, when the vehicle collides, the occupant P receives an inertial force in the vehicle width direction, that is, toward the inner wall 13 side. Furthermore, when another vehicle or the like collides with the outside of the inner wall 13 (the outer surface of the body such as a side door), the inner wall 13 may bulge so as to approach the passenger P. . In such a case, the waist L of the occupant P directly abuts against the inner side wall 13 or indirectly via a side airbag or the like.

  The present inventors have conducted a computer-aided engineering analysis (CAE) on the relationship between the load applied to the occupant P in a posture seated on the vehicle seat 11 and the skeleton of the occupant P when the vehicle collides. Analysis). As a result, the conventional technique in which the waist L of the occupant P abuts against the inner wall 13 from the side (the lumbar L of the occupant P abuts the inner wall 13 on a plane parallel to the inner wall 13 shown in FIG. 3). In such a case, the load input from the inner wall 13 to the occupant P showed a distribution with a characteristic bias in the skeleton of the occupant P. In particular, the input of the initial load to the greater trochanter 172 located outside the body of the occupant P tended to concentrate directly on the pubic bone 123 having a small cross-sectional area. Accordingly, such load inputs are dispersed and equalized in the widest possible range in time and space, or the load distribution is selectively biased to a portion having high resistance to the load input. It is desirable to

  Here, as shown in FIG. 1, a pubic bone 123 composed of an upper pubic branch 151 a and a lower pubic branch 151 b is arranged inside the greater trochanter 172 so as to extend substantially in the vehicle width direction. Further, at the rear part of the pelvis 111, there is an ear-like surface 128 of the iliac 121 extending substantially along the vehicle width direction. The vicinity of the ear-shaped surface 128 has the smallest cross-sectional area of the bone extending along the vehicle width direction at the rear portion of the pelvis 111. However, the sum of the cross-sectional area S1 of the upper pubic branch 151a and the cross-sectional area S2 of the lower pubic branch 151b is only about one third of the cross-sectional area S3 of the iliac 121 near the ear-like surface 128.

  In the CAE analysis, the present inventors specifically simulated the change in stress exhibited by the pelvis 111 when the load shown in FIG. FIG. 4A is a graph simulating changes in the load applied to the pelvis 111 when an equivalent load is input to the front part (pubic side) and the rear part (sacral side) of the pelvis 111, respectively. b) is a graph showing the time change of the stress indicated by the pelvis 111;

  As shown in FIG. 4B, the stress at the front part (pubic side) of the pelvis 111 was larger than the stress at the rear part (sacral side) despite the input of an equivalent load. According to the result of CAE analysis under a specific condition (for example, the condition that the occupant P is set to the standard physique of an American male), the cross-sectional areas at the front part (pubic side) and the rear part (sacral side) of the pelvis 111 The stress at the front part (pubic side) of the pelvis 111 was about three times as large as the stress at the rear part (sacral side) so as to be almost inversely proportional to the difference. That is, from the viewpoint of effectively protecting the occupant P, inputting a large load to the pubic bone 123 via the greater trochanter 172 in the lumbar L of the occupant P causes an extreme bias in stress. Not very desirable. Preferably, the load input to the front part (pubic bone side) of the pelvis 111 is smaller than the load input to the rear part (sacral side). By the way, most preferably in the above specific condition, the load input to the front part (pubic side) of the pelvis 111 is about one third of the load input to the rear part (sacrum side).

  In order to achieve such a desired load input, it is preferable to provide an impact absorbing member 21 as shown in FIG. 3 on the side of the waist L of the occupant P seated on the vehicle seat 11. FIG. 3 shows only a part of the shock absorbing member 21. The shock absorbing member 21 is made of a material having a shock absorbing action, and includes a tapered surface 23 that comes into contact with the waist L of the occupant P. As shown by a two-dot chain line in FIG. 3, the shock absorbing member 21 is disposed at a predetermined distance from the waist L of the occupant P instead of the tapered surface 23 that contacts the waist L of the occupant P. The taper surface 23a may be provided.

  The tapered surfaces 23, 23 a are on the side of the lumbar portion L of the occupant P at the rear portion of the pelvis 111 centered on the iliac 121, specifically at the site corresponding to the pelvis 111 behind the acetabulum 125. It arrange | positions so that it may contact | abut to the waist part L (buttock part) of P. FIG. Incidentally, the portion corresponding to the pelvis 111 behind the acetabulum 125 does not include the acetabulum 125 itself. Further, the tapered surfaces 23, 23 a are preferably arranged so as to be able to come into contact with the waist L of the occupant P on the side of the iliac bone 121, the sacrum 113, and the ischial bone 122, and correspond to the iliac bone 121. It is particularly preferable that the parts are arranged so as to be able to contact the waist L of the occupant P at the site. The tapered surfaces 23 and 23 a are preferably formed along the rear part of the pelvis 111 around the iliac bone 121, specifically, along the pelvis 111 behind the acetabulum 125. It is particularly preferable that it is formed so as to extend along.

  Such tapered surfaces 23 and 23a are preferably formed by surfaces inclined at a predetermined angle with respect to the inner wall 13 so as to protrude toward the vehicle inner side in the forward direction of the vehicle. Further, the taper surfaces 23 and 23a protrude in the vehicle interior toward the rear and are curved along the outer side of the iliac bone 121 that forms a part of a substantially bowl-shaped shape, for example, such that the central portion is recessed in an arc shape. It is particularly preferable that the curved surface is formed. Furthermore, it is preferable that the taper surfaces 23 and 23a are formed so as to protrude downward into the vehicle interior with respect to the vertical direction of the vehicle, and protrude downward into the vehicle interior as well as downward so that the central portion is recessed in an arc shape. It is particularly preferred that it is formed. Such a tapered surface 23, 23a abuts against the waist L of the occupant P (the hip, particularly the buttock near the center of the greater gluteal muscle) during a side collision of the vehicle, and the waist L of the occupant P is directed toward the inside of the vehicle. By pressing, it restrains so that the waist part L may not move to the outer side of a vehicle rather than the taper surfaces 23 and 23a. At this time, the tapered surfaces 23, 23a restrain the lumbar portion L of the occupant P at the rear portion of the pelvis 111 around the iliac bone 121 in the skeleton of the occupant P seated on the vehicle seat 11. Demonstrate the protection performance against.

  As described above, the rear part of the pelvis 111 centered on the iliac bone 121 has a skeleton that is stronger than the portion corresponding to the greater trochanter 172 with respect to the load in the vehicle width direction. Further, in this case, since the greater gluteal muscle is thickest in the rear part of the pelvis 111, a high shock absorbing effect by the greater gluteal muscle is exhibited before the load is transmitted to the iliac bone 121. For this reason, for example, when the tapered surfaces 23 and 23a abut against the waist L of the occupant P at the rear of the pelvis 111 centered on the iliac 121 and restrain the occupant P under the specific conditions described above, the greater trochanter It should be possible to withstand an input of a load that is three times higher than in the case of abutting at a portion corresponding to 172. Therefore, the protection performance with respect to the passenger | crew P can be improved further.

  Furthermore, it is preferable that the taper surfaces 23 and 23a first contact (contact) with the rear portion (hip portion) of the pelvis 111 centered on the iliac bone 121 in the waist L of the occupant P. At this time, since the load applied to the pubic bone 123 is greatly reduced as compared with the case where the tapered surfaces 23 and 23a first contact the portion corresponding to the greater trochanter 172, the protection performance for the occupant P is easy. Can be increased. Moreover, it is preferable that the impact absorbing member 21 including the tapered surfaces 23 and 23a abut on the waist L of the occupant P from an oblique rear side of the occupant P. At this time, the tapered surfaces 23, 23 a can transmit the load simultaneously over a wide range of the outer surface of the rear part of the pelvis 111 centering on the iliac bone 121. As a result, since the load is transmitted while being distributed over a wide range of the rear part of the pelvis 111, high protection performance for the occupant P is exhibited.

  Furthermore, the present inventors performed a simulation by CAE analysis as to which part of the pelvis 111 centered on the iliac 121 can be protected most effectively by biasing the input of the load. As a result, when the tapered surfaces 23 and 23a come into contact with the upper end portion of the iliac 121 (the iliac wings above the ear-shaped surface 128), the load input to the occupant P from the tapered surfaces 23 and 23a. However, in the skeleton of the occupant P, the distribution showed a characteristic bias. That is, the load input from the tapered surfaces 23 and 23a acts on the iliac bone 121 with the sacroiliac joint 129 as a fulcrum to rotate the iliac bone 121 forward relative to the sacrum 113 about the sacroiliac joint 129. A rotational moment as a point was generated. This rotational moment acts from the front end portion of the iliac 121 to the pubic bone 123, but does not act in a direction coinciding with the movement of the pubic bone 123 that is movable around the pubic joint 153. For this reason, the said rotation moment was converted into the bending moment with respect to the pubic bone 123 which has a small cross-sectional area, and the tendency which concentrates on the pubic bone 123 directly was seen. Therefore, it is desirable to selectively bias the load distribution to a portion having high resistance to such load input.

  From such a viewpoint, the tapered surfaces 23 and 23a are portions of the occupant P in the skeleton of the occupant P that are below the sacroiliac joint 129 (the ear-shaped surface 128) in the vertical direction of the pelvis 111 of the occupant P seated on the vehicle seat 11. It is preferable that the occupant P is disposed so as to be able to contact the waist L of the occupant P. In this case, for example, the tapered surfaces 23, 23 a can come into contact with the waist L of the occupant P at the side of the sciatic bone 122, the sacrum 113, and the iliac bone 121 (ie, the iliac body 126) below the sacroiliac joint 129. It is arranged to become.

  Furthermore, it is preferable that the taper surfaces 23 and 23 a are arranged so as to input a load toward the sacroiliac joint 129. In this case, for example, the tapered surfaces 23, 23 a are arranged obliquely behind and slightly below the iliac 121, and are configured by a plane perpendicular to the direction from the position toward the sacroiliac joint 129. Further, the tapered surfaces 23 and 23a are arranged obliquely behind and slightly below the iliac 121, and are configured by saddle-shaped curved surfaces extending from the position so as to surround the sacroiliac joint 129 at substantially equal distances. Is also possible. The tapered surfaces 23, 23 a in such a manner can input a load toward the sacroiliac joint 129 from a slightly lower side of the iliac bone 121 in the skeleton of the occupant P.

In order to protect the occupant P in such a desirable form, the vehicle seat 11 as shown in FIGS. 5A and 5B is employed in the vehicle 10 of the present embodiment.
The vehicle seat 11 shown in FIG. 5A is arranged on the left side of the center of the vehicle 10 in the vehicle width direction. A side door 32 is provided on the left side of the vehicle seat 11. A side door window 33 is provided on the upper side of the side door 32. A side door outer panel 34, a side door inner panel 35, and a door trim 36 as an inner trim are provided in the lower part of the side door 32 in order from the vehicle outer side to the vehicle inner side in the vehicle width direction. The side door outer panel 34 and the side door inner panel 35 are made of a steel plate, and the door trim 36 is mainly made of a resin plate.

  As shown in FIGS. 5 (a), 6 (a) and 6 (b), the seat 11a of the vehicle seat 11 has a steel sheet cushion pan 38 and an upper portion and a side portion of the seat cushion pan 38. The seat cushion 39 is provided, and the waist L of the occupant P is seated on the upper surface of the seat cushion 39. Both side portions of the seat cushion pan 38 and the seat cushion 39 are arranged at higher positions than the central portion in the vehicle width direction. Both the left side portion 38a and the right side portion 38b of the seat cushion pan 38 are formed in a long rectangular plate shape extending in the front-rear direction of the vehicle 10 and oriented vertically.

  A floor panel 41 is provided below the vehicle seat 11. Between the floor panel 41 and the seat 11a, an outer support 42 and an inner support 43 for horizontally supporting the seat 11a at a position above the floor panel 41 are provided. The outer support portion 42 is disposed on the vehicle outer side of the vehicle seat 11 in the vehicle width direction (left side with respect to the forward direction of the vehicle 10 in this embodiment), and supports the left side of the seat cushion pan 38. The inner support portion 43 is disposed on the inner side of the vehicle seat 11 in the vehicle width direction (on the right side with respect to the forward direction of the vehicle 10 in the present embodiment), and supports the right side of the seat cushion pan 38.

  The outer support portion 42 includes a seat rail 44 provided on the floor panel 41, a left side portion 38 a of the seat cushion pan 38, and a side bracket 45 for connecting the left side portion 38 a to the seat rail 44. . Similarly, the inner support portion 43 includes a seat rail 44 provided on the floor panel 41, a right side portion 38 b of the seat cushion pan 38, and a side bracket 45 for connecting the right side portion 38 b to the seat rail 44. ing. Further, the outer support portion 42 is provided with a detachment mechanism that allows the left side portion of the seat portion 11a to move upward, and the inner support portion 43 is not provided with such a detachment mechanism.

Next, the outer side support part 42 is demonstrated.
A seat rail 44 is provided at the lower end of the outer support portion 42. The seat rail 44 includes a lower rail 44a fixed on the floor panel 41, and an upper rail 44b engaged with the lower rail 44a. Lower rail 44a is formed to extend in the front-rear direction of vehicle 10. The upper rail 44b allows the position of the vehicle seat 11 to be adjusted by sliding in the front-rear direction of the vehicle 10 with respect to the lower rail 44a.

  A long square plate-like bracket support plate 44c extending in the front-rear direction of the vehicle 10 is provided at the center of the upper rail 44b in the vehicle width direction. The bracket support plate 44c is erected so as to be vertically oriented, and a plurality of first rivets 44d are provided on the upper portion thereof so as to be lined up in the front-rear direction of the vehicle 10 at predetermined intervals. Each first rivet 44d protrudes so as to extend in the vehicle width direction. A head 44e is provided at the tip of each first rivet 44d.

  A long square plate-like side bracket 45 extending in the front-rear direction of the vehicle 10 is provided above the bracket support plate 44c. A plurality of circular holes 45a are provided below the side bracket 45 so as to be arranged in the front-rear direction of the vehicle 10 at a predetermined interval. The side brackets 45 are fixed so as to be vertically oriented along the corresponding bracket support plates 44c by locking the first rivets 44d in the respective circular holes 45a. Locking projections 45 b are provided on the front end portion and the rear end portion of the side bracket 45. Each locking projection 45b is provided so as to extend in the vehicle width direction. A vehicle width direction restricting portion 45c that is wider than the central portion and the base end portion of the locking projection 45b is provided at the distal end portion of each locking projection 45b.

  A long hole 46 extending in the vertical direction is provided in the front end portion and the rear end portion of the left side portion 38 a of the seat cushion pan 38. Each long hole 46 is formed to extend upward from the left side edge of the seat cushion pan 38, that is, the lower end edge of the left side portion 38 a. The left side portion 38 a of the seat cushion pan 38 is arranged so as to be vertically oriented along the side bracket 45 by locking the locking protrusions 45 b to the upper ends of the long holes 46. Incidentally, in the vertical direction, the length of each long hole 46 is larger than the height of the vehicle width direction restricting portion 45c, and in the longitudinal direction of the vehicle 10, the width of each long hole 46 is larger than the width of the vehicle width direction restricting portion 45c. It is formed small.

Next, the inner support portion 43 will be described focusing on differences from the outer support portion 42.
As shown in FIG. 5A, in the inner support portion 43, second rivets 47 are provided at the front end portion and the rear end portion of the side bracket 45. Each second rivet 47 protrudes so as to extend in the vehicle width direction. A head portion is provided at the tip of each second rivet 47. On the other hand, a circular hole is provided in each of the front end portion and the rear end portion of the right side portion 38b of the seat cushion pan 38. The right side portion 38b of the seat cushion pan 38 is fixed so as to be vertically oriented along the corresponding side bracket 45 by locking the second rivets 47 in the circular holes.

Next, the operation of the vehicle seat 11 will be described.
As shown in FIGS. 5A, 6A, and 6B, in the vehicle seat 11 of the present embodiment, between the side bracket 45 of the inner support portion 43 and the right side portion 38b of the seat cushion pan 38. Is not provided with a detachment mechanism. For this reason, the upper rail 44b, the side bracket 45, and the right side portion 38b of the seat cushion pan 38 constituting the inner support portion 43 are all relatively moved in any direction between the vertically adjacent members, and the vehicle In order to adjust the position of the seat 11, the vehicle 10 slides in the front-rear direction of the vehicle 10 integrally with the lower rail 44a.

  In contrast, a separation mechanism is provided between the side bracket 45 of the outer support portion 42 and the left side portion 38a of the seat cushion pan 38 to allow the left side portion of the seat portion 11a to move upward. In the detachment mechanism, a locking projection 45b extending in the vehicle width direction is locked to the upper end of a long hole 46 extending in the vertical direction. For this reason, this separation mechanism connects the side bracket 45 and the left side portion 38a of the seat cushion pan 38 so as to be vertically separated. Therefore, while the left side portion of the seat portion 11a arranged above the left side portion 38a of the seat cushion pan 38 is allowed to move upward with respect to the side bracket 45, the lower side and the vehicle 10 in the front-rear direction. It is regulated not to move. Further, the left side portion of the seat portion 11a is regulated so as not to move upward by its own weight, and between the vehicle width direction regulating portion 45c of the locking projection 45b and the side surface of the side bracket 45. Since the left side portion 38a of the seat cushion pan 38 is pinched, the seat cushion pan 38 is restricted from moving in the vehicle width direction. Therefore, in the outer side support part 42, it is possible to adjust the position by sliding the seat part 11a along the lower rail 44a in the front-rear direction of the vehicle 10, and the position of the seat part 11a after the adjustment is in any direction. It is not easily changed.

  Now, as shown in FIG. 5 (b), when another vehicle 100 collides with the left side of the vehicle 10 of the present embodiment, the side door outer panel 34 is located on the inner side of the vehicle as shown in FIG. Dent. As a result, the door trim 36 deforms so as to follow the deformation of the side door outer panel 34 and deforms so as to bulge into the vehicle interior. In particular, when the vehicle 100 has a high vehicle height such as SUV, the front bumper of the vehicle 100 often dents the lower portion of the side door 32 of the vehicle 10 of the present embodiment.

  In such a case, the lower portion of the door trim 36 abuts on the left side portion of the seat portion 11a located on the side (substantially beside), and presses the left side portion of the seat portion 11a toward the vehicle interior side. When the lower part of the door trim 36 is deformed so that the lower part of the door trim 36 swells upward, that is, the waist part L of the occupant P, the lower part of the door trim 36 presses the left side part of the seat cushion 39 obliquely upward toward the vehicle interior. The left part of the part 11a is pushed upward obliquely. As a result, the left side portion 38a of the seat cushion pan 38 is similarly pushed upward obliquely, and the long hole 46 is also moved obliquely upward accordingly. At this time, the locking protrusion 45b of the outer support portion 42 is connected to the floor panel 41 via the side bracket 45 and the seat rail 44 and is regulated so as not to move upward. After the relative movement to the part, the long hole 46 comes out from the lower end. As a result, the outer support part 42 is separated into two parts, a left side part 38 a of the seat cushion pan 38, a side bracket 45 and a seat rail 44.

  Thereafter, the left side portion of the seat portion 11a is deformed as shown in FIG. 5 (b) while being pressed by the door trim 36 that swells toward the inside of the vehicle. On the other hand, in the right side portion of the seat portion 11a, the inner support portion 43 does not separate vertically, so that the seat portion 11a is inclined so as to be disposed at a higher position on the entire vehicle outer side (left side). Further, the left side of the seat cushion pan 38 is bent in an inverted V shape around the upper end of the left side portion 38a because the weight of the occupant P is added to the center portion of the seat cushion pan 38 in the vehicle width direction. Accordingly, the left side portion of the seat portion 11a rises upward. As a result, the left side portion of the seat 11a raised upward is interposed between the waist L of the occupant P and the door trim 36, and direct interference between the waist L of the occupant P and the door trim 36 is suppressed. In addition, a high shock absorbing action by the seat cushion 39 is exhibited. Further, at this time, the seat portion 11a allows the occupant P's waist L to escape away from the door trim 36, and more effectively suppresses interference between the door trim 36 and the occupant P's waist L.

  The left side portion of the seat portion 11a is always interposed between the door trim 36 and the waist L of the occupant P while the door trim 36 and the vehicle seat 11 are in contact with each other. Thus, the waist L of the occupant P is appropriately restrained to protect the occupant P. Further, when the lower portion of the door trim 36 bulges to the inside of the vehicle and the left side portion of the seat 11a is raised and the waist L of the occupant P is pushed up, the chest of the occupant P moves away from the armrest 51 of the door trim 36. Interference between the armrest 51 and the chest of the occupant P is effectively suppressed.

  The upper surface of the left side portion of the seat portion 11a that rises upward forms a tapered surface 50 as schematically shown in FIGS. The tapered surface 50 is formed in a shape along the rear part of the waist L of the occupant P by appropriately moving the thigh of the occupant P along the upper surface shape of the seat 11a as shown in FIG. Is done.

  The tapered surface 50 is in contact with the waist L of the occupant P at the rear part of the pelvis 111 around the iliac bone 121 on the side of the waist L of the occupant P. Further, the tapered surface 50 is formed so as to extend along the iliac bone 121. Further, the taper surface 50 is formed so as to protrude downward into the vehicle interior and to have a central portion recessed in an arc shape in the vertical direction of the vehicle. The tapered surface 50 abuts on the waist L of the occupant P and presses the lumbar L of the occupant P toward the inside of the vehicle, thereby restraining the waist L from moving beyond the tapered surface 50 to the outside of the vehicle. At this time, the taper surface 50 concentrates the load on the rear part of the pelvis 111 centered on the iliac bone 121 in the skeleton of the occupant P seated on the vehicle seat 11 and is applied to the portion corresponding to the greater trochanter 172. Since the waist L of the occupant P is restrained so as to reduce the occupant P, high protection performance for the occupant P is exhibited.

  Furthermore, the taper surface 50 of the present embodiment abuts against the waist L of the occupant P from obliquely below the occupant P. For this reason, the taper surface 50 abuts on the waist L of the occupant P at the site below the sacroiliac joint 129 in the vertical direction of the pelvis 111 of the occupant P seated on the vehicle seat 11 in the skeleton of the occupant P. Further, at this time, since the taper surface 50 inputs a load toward the sacroiliac joint 129, in the skeleton of the occupant P, the load is input toward the sacroiliac joint 129 from slightly behind the iliac bone 121. To make it easier.

  Further, when another vehicle 100 projects sideways into the vehicle 10 behind the rear portion of the waist L of the occupant P, the taper surface 50 is formed so as to project into the vehicle interior toward the rear in the forward direction of the vehicle. Is done. At this time, immediately after the taper surface 50 is formed, in many cases, the back surface of the pelvis 111 centering on the iliac bone 121 in the waist L of the occupant P is first brought into contact. Further, at this time, the tapered surface 50 often abuts against the waist L of the occupant P from an oblique rear side of the occupant P, so that a wide range of the outer surface of the rear part of the pelvis 111 centering on the iliac bone 121 is obtained. The load is transmitted while being distributed over the vehicle, and the load is transmitted by contacting the waist L of the occupant P obliquely from behind.

The effects exhibited by the embodiment will be described below.
-The outer side support part 42 of the vehicle seat 11 of this embodiment is comprised so that the left side part of the seat part 11a may move upwards. When the vehicle 10 collides, particularly when the vehicle 10 has a high vehicle height such as SUV, the door trim 36 may be deformed so as to bulge to the inside of the vehicle. With respect to such a side collision, the outer side support portion 42 of the present embodiment is configured so that the left side portion of the seat portion 11a is allowed to escape from the deformed door trim 36 to the waist portion L of the occupant P seated on the vehicle seat 11. It is allowed to move upward. For this reason, since direct interference between the deformed door trim 36 and the waist L of the occupant P is suppressed, the occupant P is effectively protected. Further, at this time, the left side portion of the seat portion 11a is interposed between the deformed door trim 36 and the waist portion L of the occupant P and can also serve to restrain the lumbar portion L of the occupant P appropriately. Can be effectively achieved. Further, in the outer side support portion 42 of the present embodiment, even when the vehicle seat 11 is adjusted to any position in the front-rear direction of the vehicle 10, the same function and effect can be exhibited.

  -The outer side support part 42 of the vehicle seat 11 of this embodiment is comprised so that isolation | separation is possible up and down. For this reason, the outer side support portion 42 of the vehicle seat 11 completely separates the left side portion of the seat portion 11a from the floor panel 41 when the degree of side collision is large, that is, when the deformation amount of the door trim 36 is large. enable. In this case, since direct interference between the waist L of the occupant P seated on the vehicle seat 11 and the door trim 36 is further effectively suppressed, the occupant P can be protected more effectively.

  The outer support portion 42 of the vehicle seat 11 of the present embodiment includes a left side portion 38a of the seat cushion pan 38, a seat rail 44 provided on the floor panel 41, and a left side portion 38a of the seat cushion pan 38 on the seat rail 44. And a side bracket 45 for connecting the two. Both the left side portion 38a and the side bracket 45 of the seat cushion pan 38 are formed so as to be vertically oriented. Further, the left side portion 38a of the seat cushion pan 38 is provided with a long hole 46 extending in the vertical direction, and the side bracket 45 is provided with a locking projection 45b extending in the vehicle width direction. The locking projection 45b is a long hole. It is locked in 46.

  For this reason, in the outer side support part 42 of the vehicle seat 11, the side bracket 45 and the left side part 38 a of the seat cushion pan 38 are connected by locking the locking projection 45 b to the upper end of the long hole 46. Since the long hole 46 extends in the vertical direction, the left side portion of the seat portion 11 a disposed above the left side portion 38 a of the seat cushion pan 38 is allowed to move upward with respect to the side bracket 45. Therefore, it is restricted so as not to move downward and in the front-rear direction of the vehicle 10. Further, the left side portion of the seat portion 11a is restricted so as not to move upward due to the weight of the seat portion 11a except when the vehicle 10 collides. Therefore, it is possible to adjust the position by sliding the seat portion 11a along the seat rail 44 except when the vehicle 10 collides, and the position of the seat portion 11a after the adjustment is changed unintentionally. It is never done. On the other hand, when the door trim 36 is deformed so as to bulge toward the vehicle interior when the vehicle 10 collides, the left side portion 38a of the seat cushion pan 38 can escape upward with respect to the side bracket 45. The lumbar L of the occupant P is allowed to escape from the door trim 36, and direct interference between the door trim 36 and the lumbar L of the occupant P can be suppressed.

  In the vehicle seat 11 of the present embodiment, the left side portion of the seat portion 11a moves upward by being pushed up by the door trim 36 when the vehicle 10 collides. For this reason, since direct interference between the door trim 36 and the waist part L of the passenger | crew P is suppressed, the protection with respect to the passenger | crew P is achieved effectively. At this time, the left side portion of the seat portion 11a is interposed between the door trim 36 and the waist portion L of the occupant P, and can also serve to restrain the occupant P's waist portion L appropriately. Can be achieved.

  The left side portion of the seat portion 11a of the vehicle seat 11 according to the present embodiment is disposed so as to be interposed between the waist portion L of the occupant P seated on the vehicle seat 11 and the door trim 36 when the vehicle 10 collides. Is done. For this reason, the seat cushion 39 with high shock absorption provided in the seat portion 11a can absorb the impact exerted from the door trim 36 and can play a role of making it difficult to transmit to the waist L of the occupant P.

  The left side portion of the seat portion 11a of the vehicle seat 11 of the present embodiment is a rear portion of the pelvis 111 centering on the iliac bone 121 in the skeleton of the occupant P seated on the vehicle seat 11 when the vehicle 10 collides. Since the occupant P's waist L is constrained, the load applied to the occupant P's waist L can be received with lower stress than when the occupant P is restrained at the front of the lumbar L. Therefore, since the waist L of the occupant P is appropriately restrained in a form suitable for the skeleton of the lumbar L of the occupant P, it is possible to effectively protect the occupant P.

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
-You may change the outer side support part 42 as shown in FIG. In the outer support portion 42 shown in FIG. 8, circular holes 61 are provided at the front end portion and the rear end portion of the left side portion 38 a of the seat cushion pan 38, and the circular holes 61 are provided at the front end portion and the rear end portion of the side bracket 45. A second rivet 47 is provided to be locked. That is, the left side portion 38a of the seat cushion pan 38 and the side bracket 45 in the outer support portion 42 shown in FIG. 8 are fixed in the same manner as in the case of the inner support portion 43 in the above embodiment.

  Further, in the outer support portion 42 shown in FIG. 8, a plurality of long holes 62 are provided in the lower portion of the side bracket 45 so as to be arranged in the front-rear direction of the vehicle 10 at a predetermined interval, and above the bracket support plate 44 c. The plurality of locking projections 63 are provided so as to be arranged in the front-rear direction of the vehicle 10 at predetermined intervals. And the side bracket 45 is arrange | positioned so that it may orientate up and down along the bracket support plate 44c by latching each latching protrusion 63 to the upper end of each long hole 62. As shown in FIG.

  According to this configuration, the upper rail 44 b and the side bracket 45 are connected to each other at the outer support portion 42 of the vehicle seat 11 by locking the locking protrusion 63 to the upper end of the long hole 62. Since the long hole 62 extends in the up-down direction, the left side portion of the seat portion 11a disposed above the side bracket 45 is allowed to move upward with respect to the upper rail 44b. It is regulated not to move in the front-rear direction. Further, the left side portion of the seat portion 11a is restricted so as not to move upward due to the weight of the seat portion 11a except when the vehicle 10 collides. Therefore, it is possible to adjust the position by sliding the seat portion 11a along the seat rail 44 except when the vehicle 10 collides, and the position of the seat portion 11a after the adjustment is changed unintentionally. It is never done. On the other hand, when the door trim 36 is deformed so as to bulge toward the inside of the vehicle at the time of a side collision of the vehicle 10, the side bracket 45 can be released upward with respect to the upper rail 44b. It is possible to prevent the direct interference between the door trim 36 and the waist L of the occupant P by escaping away from the door trim 36.

-You may change the circular hole 61 and the 2nd rivet 47 of the outer side support part 42 shown in FIG. 8 into the long hole 46 and the latching protrusion 45b of the said embodiment.
In the above embodiment, the locking projection 45 b may be provided on the left side 38 a of the seat cushion pan 38, and the long hole 46 may be provided on the side bracket 45. Moreover, in the outer side support part 42 shown in FIG. 8, the latching protrusion 63 may be provided in the side bracket 45, and the long hole 62 may be provided in the bracket support plate 44c.

  As shown in FIG. 9, a deformation promoting portion 66 for deforming the seat cushion pan 38 into a desired shape may be provided on the left side of the seat cushion pan 38 located on the left side of the seat portion 11a. For example, as shown in the figure, the deformation promoting portion 66 is provided with one or more elongated slits 66a extending in the front-rear direction of the vehicle 10, and the door trim 36 swells toward the inside of the vehicle when the vehicle 10 collides. When taking out, the deformation promotion part 66 makes it easy to deform the left side of the seat cushion pan 38 into a desired shape. When the slit 66a is provided in the deformation promoting portion 66, it is preferable that the slit 66a is inclined obliquely so as to be located inward of the vehicle 10 with respect to the forward direction of the vehicle 10.

  The left side surface of the seat portion 11a of the vehicle seat 11 or the left side portion 38a of the seat cushion pan 38 may be inclined obliquely so as to be positioned on the vehicle outer side of the vehicle 10 toward the rear in the forward direction of the vehicle 10. In this case, when the door trim 36 bulges to the inside of the vehicle when the vehicle 10 collides, the left side portion of the seat portion 11a is inclined obliquely so as to be located on the inside of the vehicle 10 toward the rear in the forward direction of the vehicle 10. In this state, it is easy to make contact with the waist L of the occupant P.

  -By disposing the lower end of the long hole 46 above the lower end of the left side portion 38a of the seat cushion pan 38, it is possible to make it difficult to separate the left side portion 38a of the seat cushion pan 38 and the side bracket 45 from each other vertically. is there. In this case, in the outer support portion 42, it is possible to easily move the left side portion 38a of the seat cushion pan 38 and the side bracket 45 up and down within a predetermined height range.

  A temporary fixing member is attached to the lower end portion of the long hole 46 to prevent the relative movement of the locking protrusion 45b and facilitate the assembly work of the vehicle seat 11 to the floor panel 41 of the vehicle 10. May be. The temporary fixing member can be easily detached from the left side portion 38a of the seat cushion pan 38 when the vehicle 10 collides, or is removed from the left side portion 38a of the seat cushion pan 38 after the vehicle 10 is assembled. It is preferable.

  A biasing member for biasing the left side portion 38a of the seat cushion pan 38 downward is provided between the lower portion of the side bracket 45 or the bracket support plate 44c of the upper rail 44b and the left side portion 38a of the seat cushion pan 38. May be. In this case, the work of assembling the vehicle seat 11 to the vehicle 10 is facilitated. At this time, the left side portion of the seat portion 11a can move upward according to the degree of the side collision.

  -The long hole 46 and the locking projection 45b are omitted, and the left side portion 38a of the seat cushion pan 38 and the side bracket 45 are connected so as to be relatively movable in the vertical direction by a biasing member such as a spring. May be. Further, the left side portion 38a of the seat cushion pan 38 and the side bracket 45 are temporarily fixed, and the temporary fixed state between the two members is released by the control of the electronic control unit (ECU) at the time of a side collision of the vehicle 10. You may comprise. For releasing the temporarily fixed state, a known releasing method such as an electric type, an explosive type, a spring type, or an airbag type can be used. In this case, the ECU cancels the temporarily fixed state based on a detection signal from an impact sensor that detects an impact caused by a side collision of the vehicle.

  -You may form the seat cushion 39 provided in the left side part of the seat part 11a thicker than the seat cushion 39 provided in another part. Further, the seat cushion 39 provided on the left side of the seat portion 11a may be formed to be harder than the seat cushion 39 provided in other portions.

  Each member constituting the outer support portion 42 is formed so as to be oriented in the vertical direction, but the vertical direction does not mean only the vertical direction, and is appropriately determined in consideration of the degree of freedom in design. It is possible to select.

  The vehicle seat 11 may be provided on either the front seat or the rear seat. Further, an inner trim may be provided on the side of the vehicle seat 11 instead of the door trim 36.

  -As shown in FIG. 9, you may project the convex part 67 in the lower part of the door trim 36. As shown in FIG. The convex part 67 is arrange | positioned at the side of the seat part 11a of the vehicle seat 11, Preferably it is arrange | positioned below the upper end of the left side part of the seat part 11a regarding the up-down direction. It is preferable that the convex portion 67 is formed so as to be located on the vehicle inner side toward the rear in the forward direction of the vehicle 10. Moreover, it is preferable that the convex part 67 is formed so that it may be located in the inside of a vehicle so that it may be below regarding the up-down direction. In this case, when the lower portion of the door trim 36 bulges toward the inside of the vehicle at the time of a side collision of the vehicle 10, the left side portion of the seat portion 11a is pressed in a desired direction by the convex portion 67. Is easily deformed into a desired shape. As a result, the waist L of the occupant P is easily restrained appropriately.

Further, the technical idea that can be grasped from the embodiment will be described below.
The vehicle is provided with an inner trim disposed on a side of the vehicle seat, and a convex portion is provided on the inner trim, and the convex portion is disposed on a side of one side portion of the seat portion. The vehicle according to claim 9.

The vehicle seat according to claim 3, wherein the elongated hole is provided in a side portion of the seat cushion pan, and the locking protrusion is provided in the side bracket.
The long hole is provided in a side portion of the seat cushion pan, the locking protrusion is provided in the side bracket, and a lower end of the long hole is disposed at a lower end edge of the side portion of the seat cushion pan. Item 4. The vehicle seat according to Item 3.

5. The vehicle seat according to claim 4, wherein the elongated hole is provided in the side bracket, and the locking protrusion is provided in the upper rail.
The vehicle seat according to claim 4, wherein the long hole is provided in the side bracket, the locking protrusion is provided in the upper rail, and a lower end of the long hole is disposed at a lower end edge of the side bracket.

The vehicle seat according to claim 3 or 4, wherein a front end portion of the locking projection is provided with a vehicle width direction restricting portion having a width wider than the width of the long hole in the front-rear direction of the vehicle. .
The vehicle according to any one of claims 1 to 8, wherein the outer support portion is provided with a detaching mechanism for making one side portion of the seat portion movable upward. Sheet.

The vehicle according to any one of claims 6 to 8, wherein the one side portion of the seat portion comes into contact with a waist portion of the occupant from an obliquely rearward side of the occupant at the time of a side collision of the vehicle. Sheet.
The one side portion of the seat portion abuts against the lumbar portion of the occupant while being inclined obliquely so as to be located inward of the vehicle in the forward direction of the vehicle at the time of a side collision of the vehicle. The vehicle seat according to any one of claims 6 to 8, wherein the vehicle seat is characterized by the following.

The vehicle according to claim 7, wherein one side portion of the seat portion abuts on the lumbar portion of the occupant so as to follow the pelvis behind the acetabulum at the time of a side collision of the vehicle. Sheet.
9. The vehicle seat according to claim 8, wherein one side portion of the seat portion first comes into contact with a waist portion of the occupant at a portion corresponding to the iliac at the time of a side collision of the vehicle.

The vehicle seat according to claim 7 or 8, wherein a load applied to the occupant at the time of a side collision of the vehicle is input toward a sacroiliac joint of the occupant.
9. The vehicle seat according to claim 7, wherein a load inputted toward the greater trochanter of the occupant is reduced among loads applied to the occupant during a side collision of the vehicle. .

  The one side part of the said seat part forms the taper surface which contacts the said passenger | crew's waist | hip | lumbar part from the diagonal back of the said passenger | crew at the time of the side collision of the said vehicle. The vehicle seat according to any one of the above.

  The one side portion of the seat portion is in contact with the lumbar portion of the occupant while being inclined obliquely so as to be located inward of the vehicle with respect to the forward direction of the vehicle at the time of a side collision of the vehicle. The vehicular seat according to any one of claims 6 to 8, wherein a taper surface is formed.

The perspective view which shows the skeleton near the pelvis of a human body. (A) is a perspective view showing the skeleton near the human pelvis obliquely from the rear, and (b) is the skeleton shown in FIG. 2 (a), in which the right iliac bone is rotated forward about the sacroiliac joint. The perspective view which shows the mode of. FIG. 3 is a cross-sectional plan view schematically showing a waist portion of an occupant in a posture seated on a seat portion of a vehicle seat. (A) is a simulation of the relationship between the load applied to the occupant's lower back seated on the vehicle seat and the skeleton of the occupant, and the front part (pubic side) and the rear part (sacral side) of the pelvis. The graph which shows the time change of the load when each equivalent load is input, (b) is the graph which shows the time change of the stress which a pelvis shows in the simulation at the time of inputting the load shown to Fig.4 (a). . (A) is a front view showing an occupant seated on the vehicle seat, (b) is a front view schematically showing the vehicle seat and the occupant at the time of a side collision of the vehicle. (A) is a fragmentary perspective view which shows the seat cushion pan provided in the one side part of a vehicle seat, a side bracket, and a seat rail, (b) is sectional drawing in the 6b-6b line | wire of Fig.6 (a). The perspective view which shows typically the structure of the passenger | crew who seats on the vehicle seat at the time of a side collision of the vehicle. The fragmentary perspective view which shows the one side part of the vehicle seat of the example of a change. The perspective view which shows the vehicle seat of the example of a change.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Vehicle seat, 11a ... Seat part, 36 ... Door trim as inner trim, 38 ... Seat cushion pan, 39 ... Seat cushion, 41 ... Floor panel, 42 ... Outer support part, 43 ... Inner support part 44 ... Seat rail, 44a ... Lower rail, 44b ... Upper rail, 45 ... Side bracket, 45b, 63 ... Locking projection, 46, 62 ... Long hole, 111 ... Pelvis, 121 ... Ilium, 125 ... Acetabulum, P ... occupant, L ... waist.

Claims (9)

A vehicle seat mounted on a vehicle floor panel,
The vehicle seat includes a seat portion and a support portion that supports the seat portion on the floor panel,
The support portion is disposed on the vehicle outer side with respect to the vehicle width direction of the vehicle and supports one side portion of the seat portion, and is disposed on the vehicle inner side with respect to the vehicle width direction and on the seat portion. An inner support part for supporting the other side part,
The vehicle seat, wherein the outer support portion is configured to allow one side portion of the seat portion to move upward.   The vehicle seat according to claim 1, wherein the outer support portion is configured to be separable in the vertical direction. The seat portion includes a seat cushion pan and a seat cushion provided on an upper surface of the seat cushion pan, and one side portion of the seat portion is provided with a side portion of the seat cushion pan that extends in a vertical direction.
The outer support portion includes a side portion of the seat cushion pan, a seat rail provided on the floor panel, and a side bracket that connects the side portion of the seat cushion pan to the seat rail,
The side part of the said seat cushion pan and the said side bracket are connected by the long hole extended in an up-down direction, and the latching protrusion latched in this long hole, or 1 characterized by the above-mentioned. The vehicle seat according to claim 2. The seat portion includes a seat cushion pan and a seat cushion provided on an upper surface of the seat cushion pan, and one side portion of the seat portion is provided with a side portion of the seat cushion pan that extends in a vertical direction.
The outer support portion includes a side portion of the seat cushion pan, a seat rail provided on the floor panel, and a side bracket that connects the side portion of the seat cushion pan to the seat rail. Is provided with a lower rail fixed on the floor panel, and an upper rail that slides along the lower rail,
The said side bracket and the said upper rail are connected by the long hole extended in an up-down direction, and the latching protrusion latched in this long hole, The Claim 1 or Claim 2 characterized by the above-mentioned. Vehicle seats. The vehicle is provided with an inner trim disposed on the side of the seat,
5. The vehicle seat according to claim 1, wherein one side portion of the seat portion moves upward by being pushed up by the inner trim at the time of a side collision of the vehicle. .   6. The vehicle according to claim 5, wherein one side portion of the seat portion is interposed between a waist portion of an occupant seated on the vehicle seat and the inner trim at the time of a side collision of the vehicle. Sheet.   One side portion of the seat portion restrains the occupant's waist at a portion corresponding to the pelvis behind the acetabulum in the skeleton of the occupant seated on the vehicle seat at the time of a side collision of the vehicle. The vehicle seat according to claim 6.   The side part of the seat part restrains the occupant's waist at a part corresponding to the iliac in the skeleton of the occupant seated on the vehicle seat at the time of a side collision of the vehicle. The vehicle seat according to 6.   A vehicle comprising the vehicle seat according to any one of claims 1 to 8.