JP3372010B2 - Headrest - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention inserts a foam rotatably attached to a stay in a trim cover sewn into a bag, and then injects a foam material into the trim cover to form a pad. The present invention relates to a headrest provided in an automobile seat (seat) manufactured by foam molding.

[0002]

2. Description of the Related Art In this type of headrest, a headrest is attached to a stay fixed to the seat side so as to be rotatable in the front-rear direction so that the front-rear position of the headrest can be adjusted. Since the headrest can be manufactured by injecting and foaming the foam raw material into the trim cover, the productivity is excellent.

A headrest in which a foam body is integrally foamed on the above-mentioned conventional trim cover and is attached to the stay so as to be rotatable in the front-rear direction, is provided with a stay insertion hole long in the front-rear direction in the trim cover. The headrest can rotate in the front-back direction.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention When manufacturing a headrest, in order to prevent the foam raw material injected into the trim cover from leaking outside from the stay insertion hole, for example, it is disclosed in Japanese Utility Model Laid-Open No. 6-86608. As described above, a tubular flexible hard core member to be inserted into the interior of the headrest is integrally sewn on the trim cover, and the stay is passed through the core member.

Therefore, in this conventional product, since the core material has to be molded separately from the trim cover and sewn to the trim cover, productivity is poor and the core material is hard. There was a problem that the foam raw material entered the core material and the operability of the stay was impaired.

Therefore, an object of the present invention is to prevent the foam material from leaking from the stay insertion hole of the trim cover, and to improve the workability of the trim cover sewing operation.

[0007]

A headrest according to the present invention for achieving the above object has a bag-shaped headrest frame which is attached to a stay so as to be rotatable in the front-back direction. In a headrest manufactured by inserting foam material into the trim cover and foam-molding the pad after inserting it into the trim cover, a long insertion portion is provided in the front-rear direction at the portion of the trim cover where the stay is inserted. The ends of the two fabrics made of elastic material that make up the trim cover are bent inward at right angles, and the bent portions of these two fabrics are joined together in a bag shape with the opening facing outward. In addition, a stay insertion hole having an inner diameter substantially the same as the outer diameter of the stay is provided at this joining point.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.
It will be described with reference to the drawings. FIG. 1 shows a headrest (H) according to the present invention. The headrest (H) is rotated in the front-rear direction with respect to a stay (S) (S) protruding upward from a seat back top portion of a seat, and the headrest (H) is rotated. The front and rear position of is adjusted.

In the drawings, (A) and (A) are insertion portions for moving the stays (S) (S) provided at the bottom of the headrest (H),
(B) is a frame of the headrest and stays (S) (S) mounted in the bag-shaped trim cover rotatably in the front-rear direction with respect to the frame in the bag-shaped trim cover.
The insertion openings for inserting and are shown respectively.

The trim cover is formed of a large number of pieces of cloth 10 (11) (13) (14) (15)
(16) etc. are sewn together and sewn in a bag shape, and the insertion parts (A) and (A) are provided at the connection points between the two cloths (10) and (11) and the insertion port ( B) is cloth (1
3) and (10) and (11) are provided at the joining points, respectively.

FIG. 2 shows a headrest (H) according to the present invention.
In the figure, (2) is a pad, and this pad (2) is molded by setting a bag-shaped trim cover in a mold for pad molding and then injecting a foam raw material into the trim cover. ing. That is, after inserting the frame (F) with the stay (S) into the trim cover from the insertion opening (B) of the bag-shaped trim cover, part of the stay (S) is moved from the insertion portion (A) to the outside. After projecting and setting the trim cover in the molding die, foam material is injected into the inside of the trim cover material (10) or (11) through an injection port (not shown) formed in the mold to foam. Molded.

The stay (S) is substantially U-shaped, and its base is attached to a rotating mechanism (M) provided on the frame (F) so as to be rotatable in the front-rear direction, and the rotating mechanism (M) has friction or the like. A conventionally known structure is used.

The insertion hole (B) is formed by bending the terminals (11B) (13A) of the cloths (13), (10) and (11) forming the bottom of the headrest (H) toward the inside. It is formed, and the terminal (11B) bent inside this
In (13A), the insertion port (B) is closed by pulling a foam raw material for pad molding in the left-right direction by pulling by a tension member provided in the molding die. Therefore, the foam raw material does not leak to the outside and the appearance quality of the headrest (H) is not impaired.

As shown in FIG. 4, the insertion portion (A) for inserting the stay (S) to the outside is made of cloth (10) and (11).
The ends of and are overlapped and bent inward at a right angle, and the bent parts (10B) and (11A) of these two cloths are joined in a substantially U shape with sewing threads (12A) and (12B) to open. It is formed by sewing in a bag shape having a portion on the outside.

A stay insertion hole (C) for inserting the stay (S) is provided between the sewing threads (12A) and (12B).
The stay insertion hole (C) is formed to have an inner diameter substantially the same as the outer diameter of the stay (S) having a circular cross section. The stay insertion hole (C) is provided with the sewing thread (12A) (12B).
The bent portions (10B) and (11A) are not sewn.

When the insertion part (A) is set in the molding die,
The dough (10) (1) that is attached in such a manner as to be closed by being pulled by a pulling means in the front-rear direction and that constitutes the insertion portion (A)
1) is composed of a skin material such as a woven fabric, a wadding made of a urethane foam slab material, and a wadding cover made of a non-woven fabric, and the bent portions (10B) (11A) are mutually connected. It is joined by the elasticity of wadding.

As shown in FIG. 4, the stay (S) is exposed to the outside from the stay insertion hole (C) of the trim cover through the insertion portion (A), and is set in the molding die in this state, and then the bag-shaped trim. A foam raw material for molding the pad (2) is injected into the cover to integrally mold the pad (2) and the trim cover.

When the foam material is injected to form the pad (2), as shown in FIG. 3, the bent portions (10B) and (11A) are joined by the foaming pressure of the foam material, and the insertion portion (A) is closed. The bent portions (10B) and (11A) that closely contact each other and form the insertion portion (A) are sewing threads (12A) and (12B).
Are sewn together by.

Therefore, since the foam raw material does not leak into the insertion portion (A), the insertion portion (A) is not adhered by the foam raw material and the headrest (H) is inserted into the stay (S). The front and rear position of the headrest (H) can be adjusted by moving the inside of (A) in the front and rear direction. The pad (2) is formed with a long hole in the front-rear direction at the time of molding so that the stay (S) can be moved back and forth.

[0020]

According to the present invention, in a headrest in which foam material is injected into a bag-shaped trim cover to foam-form a pad, and the headrest is rotatably attached to the stay in the front-rear direction, the trim through which the stay is inserted. The insertion part provided on the cover comes into close contact with the foaming pressure of the foam raw material, the elasticity of the bent part of the trim cover that constitutes the insertion part, and the bag-shaped gluing of the bent part, so that the foam material is inside the insertion part and outside the trim cover. There is no leakage.

Therefore, since the insertion portion is not enlarged but is closed, the appearance quality of the headrest is improved, and the headrest can be properly rotated in the front-rear direction with respect to the stay. Further, since it is not necessary to provide a foam raw material leakage preventing member made of another material or the like on the trim cover, sewing work of the trim cover can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a headrest according to the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is an enlarged cross-sectional view of a main part.

FIG. 4 is a partial cutaway view showing a state where the pad is set in a mold for pad molding.

[Explanation of symbols]

H headrest S stay A insertion part C stay insertion hole 10 Fabrics that make up the trim cover 11 Fabrics that make up the trim cover 10B folding section 11A Bent section

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B29C 39/00-39/44 A47C 7/38

Claims (3)

(57) [Claims] 1. A headrest frame is rotatably attached to a stay in the front-rear direction, inserted into a bag-shaped trim cover constituting the headrest, and a foam raw material is injected into the trim cover to form a pad. in the headrest of manufacturing by molding in foamed in a portion through which the stay of the trim cover, the front-rear direction is provided a long insertion portion, the end of the two sheets of the elastic member made of cloth insertion passage portion constituting the trim cover Bend the part inward at a right angle, and join the bent parts of these two fabrics in a bag shape with the opening facing the outside, and at this joining part, the outer diameter of the stay is almost the same. A headrest comprising a stay insertion hole having an inner diameter. 2. The headrest according to claim 1, wherein the elastic member cloth is a laminated body composed of a skin material, a foam wadding and a wadding cover. 3. The insertion part is closely contacted in the closing direction by the pressure of foams foam-formed on both sides of the bent part and the elasticity of the bent parts elastically joined to each other. The listed headrest.