JP3305685B2 - Armrest manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an armrest of a vehicle seat for forming a pad by injecting a foaming liquid into a sewn skin.

[0002]

2. Description of the Related Art In an armrest of a vehicle seat, an armrest is rotatably mounted in a vertically rotatable manner on a support shaft protruding outward from a side surface of the seatback. There is an apparatus which can be turned substantially in a standing state.

[0003] The above-mentioned armrest is formed by joining a large number of fabrics, sewing the bag into a bag shape, and injecting a foaming liquid for forming a pad into the inside of the bag to integrally form the pad with the skin.

[0004] The foaming liquid is injected into a filling hole provided in a bag-shaped outer skin by inserting an injection nozzle for injecting the foaming liquid into the inner skin.

[0005]

The injection of the foaming liquid by the injection nozzle is performed after the operator inserts the skin into the fixed injection nozzle on the work table.

However, since the injection nozzle is directly inserted into the skin placed on the work table, the position of the injection nozzle with respect to the skin is not constant. Therefore, there is a problem that the foaming liquid injected into the epidermis diffuses evenly and foaming is not performed.

Accordingly, an object of the present invention is to eliminate such a problem caused by the injection of the foaming liquid caused by inserting the conventional injection nozzle.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to dispose outside a bag-shaped outer skin and to attach to a seat-side support shaft so as to be rotatable in the vertical direction. Through the injection nozzle for foaming liquid injection into the cylindrical bearing to be
The tip of the injection nozzle is inserted into an injection pit provided on a skin on an extension line in the axial direction of the bearing, and a foaming liquid is injected into the skin to foam the pad integrally with the skin. is there.

Since the bearing on the armrest side serves as a guide for the injection nozzle for injecting the foaming liquid, the injection nozzle is accurately positioned with respect to the skin.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a state before injecting a foaming liquid for pad molding. In the figure, (1) shows a bag-like shape obtained by sewing a large number of cloths (non-breathable cloths) cut into a predetermined shape. The epidermis formed is shown in FIG.

A frame (31) and a left-right rotating shaft (30) to which the frame (31) is welded are disposed in the outer skin (1), and the left-right rotating shaft (30) has a bearing. A vertically rotating shaft (not shown) integrated with the brackets (20A) (20B) is rotatably inserted. (22) in the figure
Is a sealing piece, and the left and right rotating shaft (3) is provided by the sealing piece (22).
0) Close the opening for inserting etc. In the drawing, (21) indicates fixing pieces for preventing the movement of the sealing piece (22).

Therefore, the left-right rotation shaft (30) is rotatably mounted on the frame (31) with respect to the up-down rotation shaft, and is rotatable in the left-right direction in the use state of the armrest shown in FIG. Can rotate in the seat surface direction (inward) of the seat cushion (SC) and the seat back (SB), and the amount of protrusion of the armrest outward from the side surfaces of the seat cushion (SC) and the seat back (SB) can be reduced. It has become.

In FIG. 4, (A) is a left-right rotation part of the armrest, (A ') is a vertical rotation part, and the armrest is seat backed (S) by the vertical rotation part (A').
When the arm is turned upright along the side surface of B), the left / right turning part (A) also turns along with it, and the armrest may be in a non-use state.

An injection hole (10) is formed in a portion of the skin (1) facing the vertically rotating portion (A '), and the vertically rotating portion (A') is integrally welded. A pair of bearing brackets (20A) (20B), a bearing (2) welded to the bearing brackets (20A) (20B) in a penetrating manner, and the bearing brackets (20A) (20).
B) and a vertically rotating shaft (not shown) that is inserted through the inside of the left and right rotating shaft (30).

As shown in FIG. 5, a support shaft (5) protruding from the side surface of the seat back (SB) is inserted through the bearing (2), and the vertically rotating portion (A ') is supported by the support shaft (5). ) Is pivotally mounted in the vertical direction about the center of rotation. The injection hole (1) is provided on an extension of the bearing (2) in the axial direction.
0) is open.

In FIG. 5, (51) and (52) denote arc-shaped long holes (24) (2) of one support bracket (20A).
A stopper which is inserted into 5) to restrict the vertical rotation range of the armrest, (53) indicates a nut, (54) and (54) indicate bushes, and (23) indicates a garnish.

In the skin (1) in the state shown in FIG.
FIG. 3 shows a state in which a foaming liquid for pad molding is injected.

First, the injection nozzle (4) is inserted through the bearing (2), and the tip of the injection nozzle (4) is inserted into the injection hole (10) of the skin (1).

In this state, a foaming liquid for pad formation is injected into the skin (1) from the injection nozzle (4), and after the foaming liquid foams, it is separated from the injection nozzle (4).
As shown in (1), the pad (6) is formed integrally with the skin (1), and the frame (31) and the like are embedded in the pad (6).

Thereafter, the seat back (S) is placed in the bearing (2).
When a support shaft (5) projecting outward from the side of (B) is passed through, and fastened with a nut (53) and covered with a garnish (23), the armrest as shown in FIG.
Attached to the side of B).

[0021]

According to the present invention, the bearing of the armrest can be used as a guide for the injection nozzle for injecting the foaming liquid for pad formation.

Therefore, positioning of the injection nozzle with respect to the epidermis in the shape of a bag is accurate, and an armrest of constant quality can be manufactured.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a state before a foaming liquid for pad formation is injected.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view showing a state where an injection nozzle is inserted.

FIG. 4 is a perspective view showing a use state of an armrest manufactured by the method of the present invention.

FIG. 5 is a sectional view taken along line IV-IV in FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 skin 2 bearing 4 injection nozzle 10 injection hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 39/00-39/44 A47C ⁷ /00-7/74

Claims (1)

(57) [Claims] 1. A method for manufacturing an armrest in which a foaming liquid for forming a pad is injected into a bag-like skin containing a frame to foam and form a pad integrally with the skin, wherein the armrest is disposed outside the skin. The injection nozzle for foaming liquid injection is inserted into a cylindrical bearing rotatably mounted on the support shaft on the seat side in the vertical direction, and the injection hole provided in the skin on the extension line in the axial direction of the bearing. A method for manufacturing an armrest, wherein a foaming liquid is injected into the skin by penetrating the tip of the injection nozzle to foam the pad integrally with the skin.