JP4387373B2 - Headrest - Google Patents

Description

  The present invention relates to a headrest used for a vehicle seat, in particular, an automobile seat, and more particularly to a headrest that does not cause the headrest cover to be broken at a location where the impact is applied by a rear seat occupant when the impact is applied to the vehicle body.

In the headrest used for the automobile seat, when the impact is applied to the vehicle body, the headrest frame receives the impact caused by the collision of the occupant and is plastically deformed to absorb and relax the impact energy.
In that case, since a part of the headrest frame is processed into a plate shape that is easily plastically deformed in the front-rear direction with a predetermined load or more, the mold becomes complicated. In addition, since a part of the headrest frame has a protruding shape, a cover is required and the assembly is troublesome.
Japanese Utility Model Publication No. 6-64548

  The subject of the present invention is that when an impact is applied to the vehicle body and the headrest frame is plastically deformed due to the impact of an occupant's collision, the skin of the headrest frame can be prevented from being torn and the impact can be prevented. In other words, it is possible to provide a headrest that can absorb and mitigate impact energy to ensure the safety of the passenger, and also simplify the assembly without reducing the plastic deformation location of the headrest frame and shorten the assembly time. is there.

  The present invention includes a headrest frame having left and right stays, a headrest pad that is fixedly supported by the headrest frame, and a reinforcing material piece that is overlapped and stopped on the back surface at an impacted location, and the headrest -Includes a headrest cover that is fixedly placed over the pad.

  In the present invention, the reinforcing material piece is overlapped and stopped on the back surface at the place where the headrest cover receives an impact, and is reinforced with the reinforcing material piece, so that the impact is applied to the vehicle body, and the headrest frame receives the impact due to the collision of the occupant. When receiving and plastically deforming, the headrest cover is prevented from being torn by plastic deformation of the headrest frame, and the impact, that is, the impact energy is absorbed and relaxed to ensure the safety of the occupant, and Further, the cover parts and the cover work for covering the plastically deformed portion of the headrest frame are omitted, the assembly is simplified and the assembly time is shortened.

The headrest cover is overlapped with a reinforcing material piece on the back surface where it is subjected to impact. In that case, the reinforcement piece is stitched to the headrest cover only at one end or bonded to the back side of the headrest cover.
Further, the reinforcing material piece is made by overlaying a padding on a base fabric. In that case, it is desirable that the headrest pad is integrally formed with the headrest frame and the headrest cover by foaming, and the foaming liquid is impregnated into the wadding to form a hardened layer, so that a further effect can be expected.

  Hereinafter, the headrest of the present invention will be described based on the specific example illustrated and illustrated. FIGS. 1 to 5 are diagrams illustrating the headrest of the present invention which is used for a front seat 40 of a heavy vehicle. Example 10 is shown, and the headrest 10 is attached to the front seat 40 of the passenger car. When an impact is applied to the vehicle body and an occupant 43 sitting on the rear seat 42 collides, the headrest cover 13 is attached to the headrest. The impact caused by the collision of the occupant 43, that is, the impact energy is absorbed and relaxed without being broken by plastic deformation of the frame 11, and the safety of the occupant 43 is ensured.

  In the headrest 10, the headrest frame 11 has left and right stays 27 and 28, and the left and right stays 27 and 28 can be attached to the seat back 41 of the front seat 40. The pad 12 is assembled and fixedly supported on the headrest frame 11, and the headrest cover 13 is preliminarily placed on the back surface 32 at the location 33 where the impact is received, and the reinforcing material piece 14 is overlapped and stopped. -It is put on the pad 12 and fixed.

  In the headrest frame 11, the headrest bar 20 extends in the left-right direction so as to receive the head of an occupant (not shown) seated on the front seat 40, and the left and right support arms 23, 24. Is continuously bent at the left and right bar ends 21 and 22 of the headrest bar 20 and extends backward, and supports the headrest bar 20, and the left and right stays 27 and 28 are Are continuously bent to the left and right arm ends 25, 26 of the support arms 23, 24 and extend downward, and support the headrest bar 20 via the left and right support arms 23, 24, and further The impact energy absorbing bar 29 is passed between the left and right support arms 23, 24 on the left and right arm ends 25, 26 side, It is fixedly supported by being, and is plastically deformed in more than predetermined load.

The headrest bar 20, the left and right support arms 23, 24, and the left and right stays 27, 28 are continuously U-shaped and rounded from an elongated steel pipe having a predetermined outer diameter and thickness. It is molded into an integral structure.
Further, the impact energy absorbing bar 29 is bent into a U shape from a steel wire thinner than the stays 27 and 28 to connect the left and right connecting arms 30 and 31, and from the left and right support arms 23 and 24. The left and right connecting arms 30 and 31 are inclined later, and the left and right connecting arms 30 and 31 are welded and fixedly attached to the left and right support arms 23 and 24.

  The headrest cover 13 is made of a skin material, and is reinforced on the back surface 32 at a location 33 that receives an impact in advance, that is, a location 33 that receives the head 44 of the occupant 43 seated on the rear seat 41. The pieces are stacked and stopped and used in that state. In this case, the reinforcing material piece 14 is made of a skin material, and is sewn to the headrest cover 13 only at one end. Of course, the reinforcing material piece 14 may be bonded to the back surface 32 of the headrest cover 13 in advance.

  Therefore, in the headrest 10, an impact is applied to the vehicle body due to the collision accident of the passenger car, and when the head 44 of the occupant 43 of the rear seat 42 collides, the impact due to the collision of the head 44 of the occupant 43 is reduced. The impact energy absorbing bar 29 of the headrest frame 11 is plastically deformed while being bent as shown in FIG. 5 due to the impact caused by the collision of the head 44 of the occupant 43 while being received by the headrest pad 12. Then, the shock, that is, shock energy is absorbed and relaxed. At that time, in the headrest cover 13, the portion 33 receiving the impact is reinforced by the reinforcing material piece 14, so that the headrest cover 13 is plastic in the headrest frame 11 at the portion receiving the impact. Deformation and breakage due to the bent portion of the headrest frame 11 are reliably prevented. As a result, in the headrest 10, the headrest cover 13 is not torn due to the plastic deformation of the headrest frame 11 or the like at the location 33 where the impact is received, and in addition, the impact energy absorbing bar 29 is plastically deformed. The safety of the passenger 43 is ensured.

  Further, the headrest 10 is assembled by omitting covering the plastic deformation portion of the headrest frame 11 only by reinforcing the headrest cover 13 with the reinforcing material piece 14 at the portion 33 where the impact is received. Is simplified and assembly time is shortened.

  The reinforcing material piece 14 described above may be an overlay of a base fabric and a wadding. In that case, it is desirable that the headrest pad 12 is formed by integral foaming on the headrest frame 11 and the headrest cover 13. As described above, when the headrest pad 12 is integrally foamed, a foamed liquid is impregnated into the wadding to form a hardened layer, so that a further effect can be expected.

  As will be apparent from the specific embodiments of the present invention described above with reference to the drawings, for those of ordinary skill in the art to which the present invention pertains, It is easily embodied in another embodiment that derives from the nature and the nature of the invention and is objectively recognized as having them inherent. Of course, the content of this invention corresponds to the problem of the invention (be recommend with) and is essential for the establishment of the invention.

  As understood from the above, the headrest of the present invention includes a headrest frame having left and right stays, a headrest pad that is fixedly supported by the headrest frame, and a reinforcing material piece on the back surface at a place where an impact is received. And a headrest cover that is fixedly placed on the headrest pad. In the headrest of the present invention, an impact is applied to the vehicle body, and the headrest frame is subjected to an impact caused by an occupant's collision. When plastically deformed, tearing of the headrest cover due to plastic deformation of the headrest frame is prevented, and the impact, that is, impact energy is absorbed and relaxed to ensure the safety of the occupant, and Cover the plastic deformation part of the headrest frame Bar parts and the cover work is omitted and shortens the assembly time becomes easy to assemble, As a result, it is very useful and practical for the vehicle seat, in particular motor vehicle seat.

It is the side view which showed the specific example of the headrest of this invention utilized for the front seat arrange | positioned ahead of a rear seat in a passenger car. It is the perspective view which showed the headrest. It is the longitudinal cross-sectional view which showed the headrest. It is the perspective view which showed the headrest frame of the headrest. It is the perspective view which showed the headrest frame in the state after plastic deformation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Headrest frame 12 Headrest pad 13 Headrest cover 14 Reinforcement piece 20 Headrest bar 21 Left bar end 22 Right bar end 23 Left support arm 24 Right support arm 25 Left arm end 26 Right Arm end 27 left stay 28 right stay 29 impact energy absorbing bar 30 left connecting arm 31 right connecting arm 32 back surface 33 impacted part 40 front seat 41 seat back 42 rear seat 43 occupant 44 head

Claims (5)

A headrest bar that extends in the left-right direction to receive the head of the seated occupant, and is supported by the left and right supports that support the headrest bar by being bent continuously at the left and right bar ends of the headrest bar. A headrest frame consisting of left and right stays that are continuously bent to the left and right arm ends of the arm and left and right support arms, and a headrest pad that is fixedly supported by the headrest frame; And a headrest cover fixed on the headrest, and the impact energy absorbing bar is bent into a U-shape and has left and right connecting arms, and the head of the rear seat occupant is provided at the left and right arm ends. Tilt the left and right connecting arms toward the receiving part and raise them above the left and right support arms. The left and right connecting arms are fixedly attached to the left and right support arms, and the reinforcing material piece is superimposed on the back surface of the headrest cover at the place where the head of the seat occupant is subsequently received. Headrest where it can be stopped . The headrest according to claim 1, wherein the reinforcing material piece is sewn to the headrest cover at only one end on the back surface of the headrest cover.   The headrest according to claim 1, wherein the reinforcing material piece is bonded to the back surface of the headrest cover.   The headrest according to claim 1, wherein the reinforcing material piece overlaps the wadding on the base fabric. The headrest according to any one of claims 1 to 4, wherein the headrest pad is formed by integrally foaming the headrest frame, the headrest cover, the impact energy absorbing bar, and the reinforcing material piece .

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