JPH08332879A - Seat back for vehicle - Google Patents

Abstract

PURPOSE: To provide a safe seat back for vehicle to reduce fatigue during driving and besides relax an impact during the occurrence of an accident since the seat back has not only a head part protection function and a neck part protection function but also a function to protect a passenger at a rear seat. CONSTITUTION: A seat back for a Vehicle comprises a seat back body 11 having ahead part in which a head rest stay insertion hole 12 is formed; a head rest 21 having a head rest stay 22 inserted in the head rest stay insertion hole 12; and a cushion member 1 having an intermediate part in which a stay insertion hole 2 is formed and a front and a rear at which support parts 3 and 4 are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a passenger protection function for a rear seat in addition to a head protection member and a neck protection member which prevent the passenger from getting tired even when driving or riding for a long time. It relates to vehicle seat backs.

[0002]

2. Description of the Related Art Conventionally, a vehicle seat back is equipped with a headrest for protecting the head and neck of an occupant from the impact of a rear-end collision or a collision accident. Since it does not have a hold function, driving for a long time puts a strain on the neck and causes stiff shoulders and headaches.Especially, for passengers who have the aftereffects of whiplash, the aftereffects are exacerbated by the strain on the neck. It was Moreover, since there is a certain gap between the occupant's head and the receiving surface of the headrest, the occupant's head may be shaken by the impact of a rear-end collision or a collision accident, and the headrest may directly collide with a large swing. Therefore, there is a problem in that the damage to the head of the occupant becomes large. Therefore, the applicant previously developed a vehicle seat back provided with a neck receiving member that is located below the headrest and extends forward from the head receiving surface of the headrest in the upper part of the seatback body including the headrest, Jinhei Shohei 2-4
Although it has been filed as No. 04930, it is in the present situation that it has only a neck protecting function, is not attractive and is not widely spread.

[0003]

The problem to be solved by the present invention is to provide not only a head protection function and a neck protection function, but also a passenger occupant protection function for the rear seat. An object of the present invention is to provide a vehicle seat back that solves the problems of the conventional technology.

[0004]

A vehicle seat back according to the present invention, which has solved the above-mentioned problems, comprises a seat back main body having a headrest stay insertion hole at its top, and a stay to be inserted into the headrest stay insertion hole. A headrest provided with a stay insertion hole in the middle, and front and rear when the stay is inserted through the stay insertion hole to attach the headrest to the top of the seatback body It is characterized by comprising a cushion member in which the support part of is formed.

[0005]

In such a vehicle seat back, the cushion member is inserted into the headrest stay with the stay insertion hole formed in the middle portion thereof before the headrest is inserted into the headrest stay insertion hole of the seatback body for the driver. Insert the headrest stay into the headrest stay insertion hole of the seatback body so that one support portion projects from the front surface of the headrest and seatback body and the other support portion projects from the rear surface of the headrest and seatback body. This means that the headrest has the function of holding the driver's head and the cushion member has the function of holding the neck when seated, which means that the driver is not shaken by the vibration of the vehicle. However, the head is stable, and there is little risk of stiff shoulders or headaches even after long driving. Moreover, even in a rear-end collision or a collision accident, the head collides with the headrest after the neck hits the cushion member and the impact force is mitigated before the head collides with the headrest. The force is alleviated and the damage to the head is reduced. Further, since the rear support portion of the cushion member projects from the headrest and the rear surface of the seatback body, the rear support portion has a passenger protection function for the rear seat.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiments. 11 is a headrest stay insertion hole 1 at the top
2 is a seat back main body, 21 is a headrest that is continuously provided on the top of the seat back main body 11 by inserting the headrest stay 22 into the headrest stay insertion hole 12, and the above configuration is a conventional vehicle seat. Although not different from the back, in the present invention, the cushion member 1 is provided outside the seat back body 11 and the headrest 21.
Is built in. The cushion member 1 is provided with a stay insertion hole 2 in an intermediate portion and supports the front and rear portions 3,
4 is a bulge formed, and this cushion member 1
Is the headrest stay 2 in the stay insertion hole 2 in the middle part.
When the headrest stay 22 is attached to the top of the seatback body 11 by inserting the headrest stay 22 into the headrest stay insertion hole 12 of the seatback body 11 after inserting the headrest 2 from the front and rear surfaces of the headrest 21 and the seatback body 11. The supporting surfaces of the pillow-shaped supporting portions 3 and 4 project so that the front supporting portion 3 exerts the effect of holding the seated person's neck, and the rear supporting portion 4 moves the passenger in the rear seat forward when the vehicle suddenly stops. Better protect.

The cushion member 1 in the illustrated embodiment is made by covering an elastic bed material 1a such as foamed polyurethane resin with a skin material 1b. A front support portion 3 and a rear support portion 4 of the cushion member 1 are used. The size is different in and, and it is configured so that the wearing direction can be reversed and used depending on the physical constitution difference between the seated person such as a child and an adult.
Needless to say, the cushion member 1 may be a bladder in which a fluid such as air, gas, or liquid is enclosed. In this case, the fluid pressure inside is freely changed to freely change the cushion degree. In addition, the cushion member 1 can be drained from the cushion member 1 when not in use or at the time of sale, so that the cushion member 1 can be stored and managed in a flat state, which makes handling extremely convenient.

In such a structure, first, before the headrest 21 is inserted into the headrest stay insertion hole 12 of the driver's seatback body 11, the cushion member 1 is formed in the headrest stay 22 at the intermediate portion thereof. The stay insertion hole 2 provided is inserted and held. In this case, one of the large and small support portions 3 and 4 is arranged so as to be the front side according to the size of the seated person, and in this state, the headrest stay 22 of the headrest 21 is inserted into the headrest stay insertion hole 12 of the seatback body 11. If you attach it to
Assuming that the front support portion 3 projects from the headrest 21 and the front surface of the seatback body 11, and the rear support portion 4 projects from the headrest 21 and the rear surface of the seatback body 11, the headrest 21 includes the seatback body 11.
Since it is attached to the top of the seat, the seated person sitting with the seat back body 11 as a backrest can always support the head and the neck from the rear side by the head holding function of the headrest 21 and the neck holding function of the cushion member. Since it will be run in a state of being protected properly, it will not be directly affected by the vibration that is repeatedly applied during long-time driving, fatigue can be greatly reduced, and shoulder stiffness, headache and other injuries will occur. Can be reduced.

Moreover, since the occupant's neck is in contact with the front support portion 3 of the cushion member 1, when the head of the occupant is violently swung backward due to the impact of a rear-end collision or a collision accident, the acceleration force is increased. The cushion member 1 absorbs and decelerates, the head of the seated person does not violently collide with the headrest 21, and there is little damage and safety is achieved. Further, since the supporting portion 4 at the rear portion of the cushion member 1 projects from the rear surface of the headrest 21 and the seatback body 11, the seat occupant of the rear seat leans forward when the vehicle suddenly stops, and the face becomes the rear portion of the front seat. Even when it hits, the cushion member 1 with the rear supporting portion 4 protruding absorbs and relaxes the impact on the occupant's face, and it is possible to accurately prevent injury.

[0010]

As is apparent from the above description, the present invention has not only a head protection function and a neck protection function but also a passenger occupant protection function for the rear seat, so that fatigue during driving can be reduced. In addition to being small in number, it is safe because it can absorb impacts in the event of an accident, and in particular, the one according to claim 2 in which the sizes of the front and rear support parts are different, can be applied to occupants of various physiques. According to claim 4, the cushion member is a bladder containing fluid.
When not in use, there is an advantage that the fluid can be drained from the cushion member and stored and managed as a flat state, which makes handling extremely convenient. Therefore, the present invention is extremely significant in that it contributes to the development of the industry as a vehicle seat back that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the present invention.

[Explanation of symbols]

 1 Cushion member 1a Elastic core material 1b Skin material 2 Stay insertion hole 3 Support part 4 Support part 11 Seat back body 12 Headrest stay insertion hole 21 Headrest 22 Headrest stay

Claims (4)

[Claims] 1. A seatback body (11) having a headrest stay insertion hole (12) at its top, and a headrest (21) having a headrest stay (22) to be inserted into the headrest stay insertion hole (12), When a stay insertion hole (2) is provided in the middle part and the headrest stay (22) is inserted through the stay insertion hole (2) in the front and rear, and the headrest (21) is attached to the top of the seatback body (11), Supports protruding from the front and rear surfaces of the headrest (21) and seatback body (11)
A vehicle seat back, comprising: a cushion member (1) on which (3) and (4) are formed. 2. The vehicle seat back according to claim 1, wherein the front and rear support portions (3) and (4) have different sizes. 3. The vehicle seatback according to claim 1, wherein the cushion member (1) is made by covering an elastic core material (1a) with a skin material (1b). 4. The vehicle seatback according to claim 1, wherein the cushion member (1) is a fluid-containing sac.