JP4400261B2 - Vehicle seat back structure - Google Patents

Description

  The present invention relates to a vehicle seat back structure.

Vehicles such as automobiles are provided with a seat for a passenger 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. Of these, the seat cushion pad has a main part for holding the back of the occupant from the rear and a bank part provided on both sides of the main part for holding the back of the occupant in the left-right direction. . The bank portion projects forward from the main portion (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 7-20893

  However, in the above vehicle seat back structure, the seat cushion pad has a bank portion protruding forward with respect to the main portion, so that 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, A vehicle seat back structure in which the bank portion projects forward with respect to the main portion, and surrounds the scapula contact portion of the bank portion, and independently deforms the scapula contact portion. The vehicle seat back structure is characterized in that a deformable auxiliary groove is provided, and both end portions of the deformable auxiliary groove are connected to a vertical groove provided at a boundary portion between the main portion and the bank portion .

According to the present invention, both ends of the deformation assisting groove provided surrounding the scapula contact portion of the bank portion are connected to the longitudinal groove provided in the boundary portion between the main portion and the bank portion, so that the scapula contact is achieved. Since the contact part is deformed independently from the other parts, the scapula of the occupant can be inserted into the deformed part independently, so that a part of the back (scapula) of the occupant with a large physique It is possible to solve the problem that the back is not held well by riding on the bank and the problem of feeling uncomfortable.

For the purpose of making it possible to hold the back of a passenger with a large physique well, a deformation auxiliary groove that surrounds the scapula contact part of the bank and enables independent deformation of the scapula contact part is provided , and its deformation This was realized by means of connecting both ends of the auxiliary groove to vertical grooves provided at the boundary between the main part and the bank part .

  Hereinafter, embodiments embodying the present invention will be described 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 passenger compartment. 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 the rear 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, since the height of the scapula 15 of adult men and women is located 300 mm to 500 mm along the torso from the hip point, 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 the 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, so that a part of the back (shoulder blade 15) of the occupant of the large physique 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 (4)

A main portion for holding the back of the occupant from the rear, and a bank portion provided on both sides of the main portion for holding the back of the occupant in the left-right direction, and In the vehicle seat back structure protruding forward,
Surrounding the scapula contact portion of the bank portion, provided with a deformation assist groove that enables independent deformation of the scapula contact portion,
A vehicle seat back structure characterized in that both ends of the deformation assisting groove are connected to a longitudinal groove provided at a boundary portion between the main part and the bank part .   The vehicle seat back structure according to claim 1, wherein the deformation assisting groove has a U-shape in a front view surrounding the 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. The vehicle seat back structure according to any one of claims 1 to 3, wherein the vertical groove is a vertical groove for fixing a skin.

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