WO2017061221A1

WO2017061221A1 - Vehicle seat

Info

Publication number: WO2017061221A1
Application number: PCT/JP2016/076207
Authority: WO
Inventors: 秀夫戸畑; 孝夫筒井; 敦小池; 和善荒田; 春平豊美
Original assignee: 株式会社タチエス
Priority date: 2015-10-07
Filing date: 2016-09-06
Publication date: 2017-04-13
Also published as: JP2017071320A

Abstract

Provided is a vehicle seat (1), wherein a skeleton part (5) that forms the skeleton of the vehicle seat is formed in an approximately triangular shape when viewed from the front or the rear of the vehicle. The skeleton part (5) has a shape which decreases in width towards the top. Flange parts (51) are formed on both sides of the skeleton part (5). The flange parts (51) have a shape which protrudes forward and upward with respect to the vehicle. The flange parts (51) are preferably formed to be curved when viewed from the front or the rear of the vehicle.

Description

Vehicle seat

The present invention relates to a vehicle seat used for an automobile or the like.

As a vehicle seat for an automobile or the like, a seat called a bucket seat is used in which the occupant's fixing function is enhanced by deeply wrapping the butt and shoulders of the occupant (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 63-172349

However, it is difficult to say that the conventional bucket seat has a large skeleton and is sufficiently lightened.

An object of the present invention is to provide a vehicular seat that is a bucket type seat and has a structure that can easily realize slimming and weight reduction of a skeleton.

In order to solve such a problem, the present invention provides a bucket type vehicle seat,
The skeleton part that forms the skeleton of the vehicle seat is formed in a substantially triangular shape when viewed from the front or the rear of the vehicle.

When a load acts on the vehicle seat (for example, when a load on the vehicle rear acts on the vehicle seat due to an impact at the time of rear-end collision), the configuration of the vehicle seat causes the upper part of the skeleton part to It is a normal phenomenon that the input load gradually increases from the floor fastening point (for example, the fastening point to the slide rail on the vehicle floor), and the magnitude of the load is shown in the figure as a substantially triangular bending moment line. It becomes a figure (BMD) (see FIG. 1). The vehicle seat according to the present invention pays attention to this property, and is formed in a substantially triangular shape so that bending moments of the same magnitude act on each part, so that the skeleton forming the skeleton of the conventional vehicle seat Compared to the part (when viewed from the front or rear of the vehicle, the silhouette is substantially square. See FIGS. 12 and 13), it is possible to achieve slimming and light weight.

The skeleton portion has a shape that becomes narrower toward the top.

Further, flange portions may be formed on both side portions of the skeleton portion. When a tensile load is applied to the flange portion as the skeleton portion is deformed, the deformation amount of the skeleton portion can be suppressed.

The flange portion may have a shape protruding toward the front or upward of the vehicle.

Further, the flange portion may be formed to be curved when viewed from the front or rear of the vehicle. When both sides of the triangle are imaginary lines, the rigidity of the skeleton part can be adjusted by the amount of curvature on both sides of the skeleton part protruding outside or inside the imaginary line.

Further, the protruding amount of the flange portion may gradually decrease toward the upper side of the vehicle seat.

Further, the backrest of the vehicle seat may be fixed to the upper part of the skeleton part.

The backrest of the vehicle seat may be supported to be tiltable by the skeleton.

According to the present invention, it is possible to provide a vehicular seat that is a bucket type seat and has a structure that can easily achieve slimming and weight reduction of the skeleton.

It is a figure which shows an example (perspective view) of a bucket type vehicle seat together with a diagram (BMD) of a bending moment acting on a skeleton part of the vehicle seat. It is a front view of a vehicular seat showing an example of shape, such as a frame part and a backrest. It is a right view of a vehicle seat showing an example of the shape of a skeleton part and the like. It is a right view which shows collectively the frame | skeleton part at the time of normal time, and the frame | skeleton part at the time of a deformation | transformation by vehicle rear collision. It is a top view which shows collectively the frame | skeleton part at the time of normal time, and the frame | skeleton part at the time of a deformation | transformation by vehicle rear collision. It is a right side view of a vehicle seat showing examples of shapes such as a skeleton part, a seat, and a backrest. It is a figure which shows the cross-sectional shape of the frame | skeleton part in the VII-VII line of FIG. It is a figure which shows the cross-sectional shape of the frame | skeleton part in the VIII-VIII line of FIG. It is a figure which shows the cross-sectional shape of the frame | skeleton part in the IX-IX line of FIG. It is the right view which shows the structural example of the vehicle seat by which the backrest and the frame | skeleton part were couple | bonded by the connection link, and the enlarged view of a coupling | bond part. FIG. 4 is a right side view of the vehicle seat in which the backrest is in a rearward tilt position and an enlarged view of a coupling portion. It is a perspective view which shows an example of the frame | skeleton part of the conventional vehicle seat as reference. It is a perspective view which shows the example of the shape of the conventional vehicle seat for reference.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings (see FIG. 1 and the like). In FIG. 1 and the like, the present invention will be described with reference to an example in which the present invention is applied to a bucket type automobile seat with improved occupant holdability.

The vehicle seat 1 is a so-called bucket seat composed of a skeleton 5, a seat 2 and a backrest 3 supported by the skeleton 5, a headrest 4, and the like. The bucket seat includes a full bucket seat in which the backrest 3 is fixed, and a semi-bucket seat in which the backrest 3 is movable and can perform a reclining operation. The vehicle seat 1 according to the present invention includes any bucket seat. It can also be applied to sheets.

The skeleton 5 is a member that forms the skeleton of the vehicle seat 1 and is disposed on the floor panel of the vehicle and supports the seat 2 and the backrest 3 (see FIG. 1 and the like). For example, in this embodiment, the skeleton 5 is attached to the slide rail 9 on the floor panel so as to be slidable back and forth (see FIG. 3 and the like). The skeleton 5 of the present embodiment is made of a high-rigidity member formed of, for example, a high-tensile steel plate or FRP (fiber reinforced resin), and supports a backrest 3 from a seat 52 that supports the seat 2. It is integrally formed so as to continue to the squeezed portion 53 (see FIG. 2 and the like).

Further, in the vehicle seat 1 of the present embodiment, the skeleton 5 is formed in a substantially triangular shape when viewed from the front or the rear of the vehicle, and has a shape that becomes narrower toward the top (FIG. 2, (See FIG. 5).

Flange portions 51 are formed on both side portions 5s of the skeleton portion 5 so as to be bent and protrude toward the front of the vehicle. When a so-called rear collision occurs in which the other vehicle collides with the rear portion of the vehicle, a force acts on the skeleton portion 5 so as to warp backward due to an impact at the time of the collision. At this time, as a result of the tensile load acting on the flange 51 along with the deformation of the skeleton 5, the amount of deformation of the skeleton 5 is suppressed.

The flange portion 51 is formed so that the amount of protrusion toward the front of the vehicle gradually decreases toward the top of the vehicle seat 1 (see FIGS. 6 to 9). At the time of a rear collision, a backward bending moment acts on the skeleton part 5 due to the action of an inertial force or the like, and this bending moment may act more in the lower part of the skeleton part 5. In this regard, in the present embodiment, the lower part of the skeleton part 5 is formed such that the protruding amount of the flange part 51 is increased so that the tensile stress acting on the flange part 51 of the skeleton part 5 is equalized (see FIG. 6 etc.).

Further, the flange portion 51 may have a cross-sectional shape (see FIG. 7) in which a front edge of the vehicle is bent inward (see FIGS. 7 to 9), or a middle portion thereof is bent in a crank shape. By setting it as such a shape, the rigidity with which the skeleton part 5 is equipped can be adjusted, and the difficulty of deformation | transformation of the skeleton part 5 at the time of a rear collision etc. can be changed. Since the lower part of the skeleton part 5 of this embodiment has a bifurcated shape (see FIG. 2), the cross section of the skeleton part 5 is on both sides in FIG. Only appears, not in the center (see FIG. 7).

Although not particularly shown in the drawing, the thickness of the flange 51 may be changed instead of or in combination with the amount of protrusion of the flange 51 depending on the height as described above. For example, the tensile stress acting on the flange portion 51 of the skeleton portion 5 can be made uniform by forming the flange portion 51 so as to be thinner toward the upper side of the vehicle seat 1.

Further, the skeleton part 5 is formed such that the flange parts 51 formed on both side parts 5s thereof are curved when viewed from the front or the rear of the vehicle (see FIGS. 2 and 5). For example, in the vehicle seat 1 of the present embodiment, when both sides of an isosceles triangle that controls the general shape of the skeleton part 5 are imaginary lines, of the flange parts 51 formed on both side parts 5s of the skeleton part 5, The upper part bulges outward from the imaginary line (projects outward), while the lower part is curved to dent inward from the imaginary line (see FIG. 2 and the like). When a force that totally warps backward is applied to (see FIG. 4), the curved flange portion 51 is pulled in the vertical direction, and when it becomes a straight line, it is stretched to apply tensile stress, and the skeleton portion 5 The warping is suppressed as described above (see FIG. 5 and the like). In other words, the rigidity of the skeleton part 5 can be adjusted by the amount of bending of the flange portions 51 of the both side parts 5s of the skeleton part 5 protruding outside or inside the imaginary line. In addition to the bending amount of the flange portion 51, the thickness of the flange portion 51, the forward protrusion amount, the rigidity of the flange portion 51 itself, and the like influence the rigidity of the skeleton portion 5.

The seat 2 is disposed below the skeleton part 5 and supported by the skeleton part 5.

The backrest 3 is disposed in front of the backrest portion 53 of the skeleton portion 5 (see FIG. 3 and the like). The specific support structure is not particularly limited. For example, if the backrest 3 is fixed to the upper part of the skeleton 5, the load input from the backrest 3 is transmitted to the entire skeleton 5, and the flange portion 51 is transmitted as a tensile load.

In the present embodiment, the backrest 3 is supported by the skeleton 5 so as to be tiltable, and the angle of the backrest 3 can be adjusted by the angle adjusting device 7. The angle adjustment device 7 includes, for example, a connecting link 71 that is disposed between the backrest 3 and the skeleton 5 and is pin-coupled to each of the backrest 3 and the skeleton 5 (see FIGS. 10 and 11). The connecting link 71 regulates the movement of the backrest 3 when tilting and its movable region, and the backrest 3 is in a predetermined range between the forward tilt position (see FIG. 10) and the back tilt position (see FIG. 11). Allow to tilt in.

Further, a seat surface position adjusting device for adjusting the position of the seat surface of the seat 2 may be provided between the seat 2 and the skeleton 5. The seat surface position adjusting device may be interlocked with the tilting motion of the backrest 3. Although not shown in detail in detail, the seat surface position adjusting device includes, for example, a support pin that supports the seat 2 so as to be tiltable in the skeleton 5, a link that transmits the tilting motion of the backrest 3 to the seat 2, and the like. be able to.

In the vehicle seat 1 of the present embodiment, paying attention to the fact that the input load acting on the skeleton part is represented as a substantially triangular bending moment diagram (BMD), the skeleton part 5 is formed in a substantially triangular shape, A bending moment of the same magnitude is applied to each part of the skeleton part 5. For this reason, according to this embodiment, compared with the conventional vehicle seat in which the silhouette of the skeleton when viewed from the front or the rear of the vehicle is substantially square, the skeleton 5 is slimmed and the weight is reduced. be able to.

The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, in the embodiment described above, an example in which the present invention is applied to an automobile seat has been described. However, the present invention can also be applied to an aircraft seat, a passenger ship seat, a railway vehicle seat, and the like.

Further, in the above-described embodiment, as an example of the skeleton part 5, the seat part 52 and the backrest part 53 are integrally configured (see FIG. 3), and the backrest 3 is placed on the backrest part 53 of the skeleton part 5. Although it demonstrated while showing what was supported so that inclination was possible (refer FIG. 10, FIG. 11), these are only a suitable example. In addition, the present invention can also be applied to the vehicle seat 1 having the skeleton portion 5 in which the backrest portion 53 is connected to the seat portion 52 so as to be tiltable.

The present invention is suitable for application to vehicle seats used in automobiles and the like.

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 2 ... Seat 3 ... Backrest 5 ... Skeletal part 5s ... Skeletal part side part 7 ... Angle adjusting device 51 ... Skeletal part flange part 52 ... Skeletal part seat part 53 ... Skeletal part backrest part

Claims

In bucket type vehicle seats,
A vehicle seat in which a skeleton part forming a skeleton of the vehicle seat is formed in a substantially triangular shape when viewed from the front or the rear of the vehicle.
The vehicle seat according to claim 1, wherein the skeleton portion has a shape that becomes narrower toward the top.
The vehicle seat according to claim 2, wherein flange portions are formed on both side portions of the skeleton portion.
4. The vehicle seat according to claim 3, wherein the flange portion has a shape protruding forward or upward of the vehicle.
The vehicle seat according to claim 4, wherein the flange portion is formed to bend when viewed from the front or rear of the vehicle.
The vehicle seat according to claim 4 or 5, wherein the protrusion amount of the flange portion gradually decreases toward the upper side of the vehicle seat.
The vehicle seat according to any one of claims 3 to 6, wherein a backrest of the vehicle seat is fixed to an upper portion of the skeleton portion.
The vehicle seat according to any one of claims 1 to 6, wherein a backrest of the vehicle seat is supported by the frame portion so as to be tiltable.