JPH0421316Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a headrest for automobiles, and particularly to a headrest insert that is the core thereof.

Conventionally, automobiles are equipped with headrests to protect the heads of occupants from unexpected accidents. As shown in FIG. 6, this headrest 70 usually consists of an insert body 71, a support stay 72 attached to the insert body, a plastic foam 73 surrounding the insert body, and a skin 74 covering the foam 73. .

As mentioned above, the main purpose of this headrest is to absorb and alleviate the impact in the event of an accident, and it is designed to maximize the energy absorption capacity in the area where the head is supported. There are individual differences, and in recent years, headrests with adjustable heights have been proposed. Various mechanisms have been proposed to perform this height adjustment, but they can be roughly divided into those in which the support stay of the headrest is movable relative to the seat backrest, and those in which the stay is movable relative to the headrest body. It is classified into those that do. However, in any case, it is inevitable that the supporting stays that attach the headrest to the seat backrest will be exposed, so as shown in Attempts have been made to encapsulate the

On the other hand, for the headrest, as mentioned above, it is preferable to bury the insert in the epidermis, especially in the plastic foam, without any movement. The epidermis 74 in a protruding state
is placed in a foaming mold, and a liquid raw material such as foamed polyurethane is injected between the skin 74 and the insert body 71 and foamed to cover the insert body with the foam 73 and integrate it with the skin 74.
So-called integral foam molding is performed.

(Problem to be solved by the invention) However, in recent years, there has been a tendency for woven or knitted fabrics to be used frequently as skin materials. In the case of covered items, it is difficult to shape the legs into the desired shape even by integral foam molding because the fabric etc. is amorphous. I have a hard time with it. Furthermore, since the support stay must be provided to protrude from the skin 74, a stay insertion hole is provided in advance at a predetermined position on the skin 74.
There is an unavoidable tendency for a gap to occur between this hole and the stay. Therefore, when the liquid raw material injected during the above-mentioned integral foam molding fills the skin 74 as it foams, it often overflows and contaminates the outer surface of the skin 74. This will cause a fatal defect if the skin 74 is made of a porous material such as a fabric.

Furthermore, if the support stay is movable relative to the headrest body, it is necessary that the stay be buried within the headrest without impairing its ability to slide and lock at predetermined intervals. It is also desired that the liquid raw material does not overflow from the stay insertion hole.

(Means for Solving the Problems) Therefore, the present proposal attempts to provide a new headrest insert that solves the above problems, and the gist is that the supporting stay 20 is removed from the insert body 11. In the headrest insert, a cylindrical part 30 is provided upright around the stay protruding part of the insert body, and an end plate is provided at the end of the cylindrical part 30 to bulge the skin in a predetermined shape. 31, and the end plate 31 is provided with an overhanging portion 31a surrounding the cylindrical portion 30. In addition, when there are a plurality of stays, a through hole is provided in the overhanging part surrounding the cylindrical part of the end plate in one leg part.

(Function) When the insert is attached to the skin 40 of a fabric made by sewing or the like, the insert main body 11 has a cylindrical part 30 erected around the base of the stay 20, and the skin is attached to the end of the cylindrical part 30. An end plate 31 is provided to bulge out into a predetermined shape, and the end plate 31 is provided with a protruding portion 31a surrounding the cylindrical portion 30, so that the leg portion of the skin 40 extends from the end of the cylindrical portion. End plate overhang 31
a and the cylindrical portion 30 to maintain the bulge in a predetermined shape. Therefore, if the stay 20 is used to suspend the skin 40 and the insert body 11 is placed in a foaming mold, the insert body 11 will be located at a predetermined position within the skin 40. In this state, if a liquid raw material of polyurethane foam is injected between the skin 40 and the insert body 11 and foamed, the insert body will be covered with the foam and the skin 4 will be covered with the foam.
It will become one with 0. At this time, since the base of the stay 20 is surrounded by the cylindrical part 30 that stands up from the insert body 11, the periphery of the stay 20 and the insert body 1 of the stay 20
1, the liquid foaming material will not enter and foam at the attachment part 1, and the stay insertion hole 48 provided in the skin 40
This also eliminates most of the risk of liquid raw materials spilling out. Furthermore, since the liquid raw material can be injected by inserting the injection nozzle into the through hole 35 of the end plate of the cylindrical portion, scattering of the liquid raw material is also prevented.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view of the main parts of the head rest insert 10 according to the present embodiment when it is inverted, and FIG.
It is a longitudinal cross-sectional view taken along line A, showing the attached epidermis 4.
0 is indicated by a chain line, FIG. 3 is a longitudinal cross-sectional view of the other stay protrusion, similar to FIG. 2, and FIG. 4 is an inverted perspective view of the headrest as a product.

The head rest insert 10 is the support stay 2
0 and an insert body 11. The support stay 20 is made of a metal rod or tubular body, and has a substantially V shape on one side that engages with a locking tool 61 such as a clip.
It has a letter-shaped notch 21, one end or middle portion of which is locked or fixed within the insert body 11. The stay 20 shown in FIG. 1 is an example in which the stay 20 has one half of a substantially U-shape, and the middle portion thereof is enclosed within the insert body 11.

The insert main body 11 is made of a hollow material such as plastic, and contains one end or an intermediate portion of the stay 20 as described above. In addition, in the case where the U-shaped stay 20 shown in FIG. 1 is movably housed in the insert main body 11, insert halves 11a and 11b are formed, which are divided along the line 12, for example, and one After the stay 20 is attached to the half body 11b, the two halves 11a and 11b are combined. A cylindrical part 30 that surrounds a certain length of the stay is erected on the protruding part of the stay 20 from the insert main body 11, and an end plate 31 that bulges the skin of the headrest into a predetermined shape is provided at the end of the cylindrical part 30 that surrounds a certain length of the stay. , is provided with an overhanging portion 31a surrounding the cylindrical portion 30. The end plate 31 is configured such that the end plate 31 provided with the engaging portion 33 is fitted into the end opening 32 of the cylindrical portion 30 as shown in FIGS. 2 and 3, or as shown in FIG. 4. It is provided integrally and connected to the end of the cylindrical portion 30 as shown in FIG. Which one is selected is determined depending on whether a locking function for the stay 20 is provided in the cylindrical portion 30 or not. Note that the end plate 31 shown in FIGS. 2 and 3
In this case, a hole 34 for inserting the stay 20 is provided. Reference numeral 35 denotes a through hole provided in the protrusion from the cylindrical portion 30 of the end plate 31, and is used to insert a nozzle 60 for injecting liquid raw material into the hole 50 between the insert body 11 and the skin 40. . Injection of this liquid raw material is usually performed from one place, and when a plurality of stays 20 are protruded from the insert body 11, for example, as shown in FIG. In the case where the through hole 35 is provided, it is sufficient that the through hole 35 is provided only in the end plate 31 of the cylindrical portion on one stay side.
As shown in FIG. 3, the other stay side does not need to be provided with the through hole.

In FIGS. 2 and 3, reference numeral 61 denotes a U-shaped clip that elastically locks into the notch 21 of the stay 20, and is attached so as to clamp the stay 20, and is inserted into the cylindrical portion 30. The stay guide portion 37 is held so as to be sandwiched between the wall 36 provided thereon and the tip of a stay guide portion 37 protruding into the cylindrical portion 30 from the other half pair 11a. With this configuration, when the stay 20 slides, the clip 61 intermittently engages with the V-shaped notch 21 of the stay 20 to adjust the protruding length of the stay 20. Reference numeral 40 denotes a skin, which is made of a laminate of a fibrous skin material 41 such as a woven or knitted fabric and a sheet-like foam 42 such as a soft urethane foam.
This skin 40 is sewn into a desired shape from the laminated pair, and preferably has an opening 43 at the end of the leg of the headrest, and is configured so that it is turned inside out through the opening 43 so that the skin material 41, such as a fabric, becomes the outer surface. . The insert main body 11 can be inserted into the opening 43 as shown in the figure, and the end plate 31 of the cylindrical portion 30 can be inserted into the opening 43.
3 is preferably provided by sewing or the like so as to close it from inside the skin 40. Note that this opening 43 is opened by turning the sewing skin 40 inside out and inserting the insert 10 as described above.
Since it is for inserting a stay 20, it is only necessary to provide it at one place on the skin 40, and in the case of the skin 40 into which the insert main body 11 having a plurality of stays 20 is inserted, as shown in FIG. It is sufficient to provide only the stay insertion hole 44 for the 20 protrusion.

(Effect) Since the insert 10 of the present invention is configured as described above, the leg portion 45 covering the stay 20 as shown in FIG.
Even if the outer skin 40 provided with the above is sewn from a laminate of an amorphous material such as a textile, particularly a laminate of a textile 41 and a soft foam sheet 42, there is an opening at one leg end 46 for turning the inside out after sewing. 43, and the other leg end 4
By providing an insertion hole 48 for the stay 20 in 7, the stay 20 and the insert main body 11 are inserted through one opening 43, and the cylindrical portion 30 and the end plate 31 provided at the end thereof are attached to the skin 40 and the leg portion 45. By lining the skin, the skin 40 can be expanded into a substantially predetermined shape. On the other hand, if the skin 40 containing this insert is suspended using the stays 20 and installed in a foam type (not shown), the insert main body 11 will be located at a predetermined position within the skin 40.
In addition, the skins 40 of the leg ends 46, 47 are held between the end plate 31 and the mold. Further, the stay 20 located within the epidermis 40 is isolated by the cylindrical portion 30 and a space 50 within the epidermis 40. Therefore,
The liquid raw material injected between the skin 40 and the insert body 11 foams and wraps around the insert body 11 without infiltrating the sliding part of the stay 20 or overflowing from the stay insertion hole 48 of the skin 40. , are integrated with the epidermis 40. At this time, in the leg portion 45, the outer skin is bulged into a predetermined shape so that the leg end shape is defined by the overhanging portion 31a of the end plate as described above, so that the leg portion is shaped into the desired leg shape. It will be done. Furthermore, since the liquid raw material injection nozzle 60 can be fixed using the through hole 35 provided in one end plate 31, it is also possible to prevent the liquid raw material from scattering. The opening 43 of the skin 40 is closed with the same or similar material as the skin after the liquid raw material is injected and foamed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of the headrest insert of the present invention, Fig. 2 is a longitudinal cross-sectional view of the main parts taken along line A-A with the insert shown in Fig. 1 installed inside the skin;
(The skin is shown by a chain line.), FIG. 3 is a longitudinal sectional view similar to FIG. 2 of the other stay protrusion, FIG. 4 is a longitudinal sectional view similar to FIG. 3 of another embodiment, FIG. 5 is an inverted perspective view of a head rest incorporating the insert of the present invention, and FIG. 6 is a general sectional view of a conventional head rest.

Claims (1)

[Claims for Utility Model Registration] 1. In a head rest insert having a support stay protruding from the insert body, a cylindrical part is provided upright around the stay protrusion of the insert body, and the end of the cylindrical part 1. A headrest insert comprising: an end plate for expanding the skin into a predetermined shape; and an overhang portion surrounding the cylindrical portion. 2. The headrest insert according to claim 1, which has a through hole in the protruding portion surrounding the cylindrical portion of the end plate.