JP2005253833A - Vehicle seat back structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To skillfully retain the back of the occupant with a large build. <P>SOLUTION: The vehicle seat back structure is provided with a main part 4 for retaining the back of the occupant from behind and ridge parts 6 provided on both sides of the main part 4 for widthways retaining the back and extending forward from the main part 4. Each of deformable and auxiliary grooves 12 rendering each of scapula contact part places 11 independently changeable is provided outside each of the scapula contact part places 11 of the ridge parts 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle seat back structure.

Vehicles such as automobiles are provided with a seat for an occupant to sit in the passenger compartment. Such a seat includes a seat cushion that supports the lower back of the occupant from below and a seat back that supports the back of the occupant from behind. The seat back has a structure in which a seat cushion pad is held by a seat frame and covered with a skin. Among these, the seat cushion pad has a main part for holding the occupant's back from behind, and a bank part provided on both sides of the main part for holding the occupant's back in the left-right direction. . The bank portion projects forward with respect to the main portion (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 7-20893

  However, in the above vehicle seat back structure, since the seat cushion pad has a bank portion that projects forward with respect to the main portion, when a passenger with a larger physique than expected is seated, the back There was a problem that a part of the shoulder (scapula) climbed on the bank and the back was not held well, and a sense of incongruity occurred.

  In order to solve the above problems, in the present invention, a main part for holding the back part of the occupant from the rear, and a bank part provided on both sides of the main part for holding the back part of the occupant in the left-right direction, In the vehicle seat back structure in which the bank portion projects forward with respect to the main portion, the scapula contact portion is independently deformed outside the scapula contact portion of the bank portion. It is characterized by a vehicle seat back structure provided with a deformable auxiliary groove.

  According to the present invention, the scapula contact portion is independently deformed from other portions by the deformation auxiliary groove provided on the outer side of the scapula contact portion of the bank portion, so that the scapula of the occupant is independently deformed. To solve the problem that a part of the back (shoulder blade) of the occupant with a large physique rides on the bank and the back is not well held, and that the user feels uncomfortable. Can do.

  Means of providing a deformation assist groove that enables independent deformation of the scapula contact portion outside the scapula contact portion of the bank for the purpose of successfully holding the back of a passenger with a large physique Realized.

  Embodiments of the present invention will be described below together with illustrated examples.

  1 to 7 show an embodiment of the present invention.

  First, the structure will be described. A vehicle such as an automobile is provided with a seat in the vehicle interior. Such a seat includes a seat cushion that supports the occupant's lower back from below, and a seat back 1 that supports the occupant's back from behind, as shown in FIGS. 1 and 2. The seat back 1 has a structure in which the seat cushion pad 2 is held by a seat frame and covered with a skin. Of these, the seat cushion pad 2 includes a main portion 4 for holding the occupant's back from behind, and a bank portion 6 provided on both sides of the main portion 4 for holding the occupant's back in the left-right direction. Have. The bank portion 6 projects forward with respect to the main portion 4. A longitudinal groove is provided at a boundary portion between the main portion 4 and the bank portion 6. This longitudinal groove has a function as the skin fixing longitudinal groove 7 in this embodiment.

  In this embodiment, a deformation assisting groove 12 that enables independent deformation of the scapula contact portion 11 is provided outside the scapula contact portion 11 of the bank portion 6.

  For example, as shown in FIG. 3, the deformation auxiliary groove 12 may be a short vertical groove 12 a parallel to the skin fixing vertical groove 7.

  Further, the deformation assisting groove 12 may be, for example, a substantially U-shaped groove 12b that surrounds the scapula contact portion 11 as shown in FIG.

  Alternatively, the deformation assisting groove 12 may be a substantially semicircular arc-shaped groove 12c that surrounds the scapula contact portion 11, as shown in FIG.

  In particular, as shown in FIG. 1, the deformation assisting groove 12 is preferably connected at both ends to a longitudinal groove provided at a boundary portion between the main portion 4 and the bank portion 6.

  This vertical groove can be appropriately formed according to the application and function, and the deformation assisting groove 12 can be connected to any vertical groove. In this embodiment, the longitudinal groove has a function as the skin fixing longitudinal groove 7.

  At this time, the height of the scapula 15 of adult males and females is 300 mm to 500 mm along the torso from the hip point, so the position of the deformation assist groove 12 is in the range of “300 mm to 500 mm along the torso from the hip point”. It is best to provide it.

  In particular, since a person with a large height generally has a good physique, a sufficient effect can be obtained if the deformation assisting groove 12 is provided at least in a range of “400 mm to 500 mm along the torso from the hip point”.

  Next, the operation of this embodiment will be described.

  As shown in FIG. 6 and FIG. 7, the scapula contact portion 11 is independently deformed from other portions by the deformation assisting groove 12 provided outside the scapula contact portion 11 of the bank portion 6. The scapula 15 of the occupant can be inserted into the deformed part independently, and therefore, a part of the back of the occupant having a large physique (scapula 15) rides on the bank 6 and the back is not held well. And the problem of feeling uncomfortable can be solved.

  For example, as shown in FIG. 3, the deformation assisting groove 12 is also effective as a short vertical groove 12 a parallel to the skin fixing vertical groove 7.

  Further, as shown in FIG. 4, the deformation assist groove 12 is also effective as a substantially U-shape in front view surrounding the scapula contact portion 11.

  As shown in FIG. 5, the deformation assist groove 12 is also effective as a substantially semicircular arc shape in front view surrounding the scapula contact portion 11.

  And as shown in FIG. 1, the both ends of the deformation | transformation auxiliary groove 12 are connected to the vertical groove provided in the boundary part of the main part 4 and the bank part 6, and the scapula contact site | part 11 is made easier and smoother. Can be independently deformed, and the sitting comfort can be improved.

  As the vertical grooves, those appropriately formed according to applications and functions can be used. However, it is optimal in terms of layout to use vertical grooves having a function as the skin fixing vertical grooves 7.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention.

It is a perspective view of the Example of this invention. It is sectional drawing of the AA arrow direction of FIG. It is a top view which shows an example of a deformation | transformation auxiliary groove. It is a top view which shows another example of a deformation | transformation auxiliary groove. It is a top view which shows the other example of a deformation | transformation auxiliary groove. It is an operation | movement figure similar to FIG. FIG. 3 is an operation diagram similar to FIG. 2.

Explanation of symbols

4 Main part 6 Bank part 7 Vertical groove for fixing skin (vertical groove)
11 Scapula contact part 12 Deformation auxiliary groove

Claims (5)

A main part for holding the occupant's back from behind, and a bank part provided on both sides of the main part for holding the occupant's back part in the left-right direction, the bank part being connected to the main part In the vehicle seat back structure protruding forward,
A vehicular seat back structure characterized in that a deformation assisting groove is provided outside the scapula contact portion of the bank portion to enable independent deformation of the scapula contact portion.   The vehicle seat back structure according to claim 1, wherein the deformation assisting groove has a U-shape in front view surrounding a scapula contact portion.   The vehicle seat back structure according to claim 1, wherein the deformation assisting groove has a semicircular arc shape in front view surrounding the scapula contact portion.   4. The vehicle seat back structure according to claim 1, wherein both ends of the deformation assisting groove are connected to a longitudinal groove provided at a boundary portion between the main portion and the bank portion. 5.   The vehicle seat back structure according to claim 4, wherein the vertical groove is a vertical groove for fixing a skin.

Images