JPH073963Y2 - Seat back - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a seat back having an armrest,
In particular, the present invention relates to a seat back including a foam-molded pad member and a frame member that holds the pad member.

"Prior Art" As a conventional seat back of this type, for example, there is one as shown in Figs. 7 and 8.

That is, foaming is performed by the large molding dies A and B so that the pad members 1a and 2a forming the armrests integrally project from the pad members 1 and 2 forming the backrest of the seat back having the armrests.

Seat back padding with long armrests 1,
When molding 1a, use mold A shown in FIG.
On the other hand, when the pad members 2 and 2a of the seat back having the short armrests are molded, the molding die B shown in FIG. 6 is used.

"Problems to be solved by the invention" However, in such a conventional seat back, even when it is desired to change only the length and shape of the armrest, the parts 1a and 2a to be the armrests and the parts 1 and 2 to be the backrest are provided. Since a plurality of large molds A and B for molding the entire pad member including them are required, there is a problem that the production cost increases.

Further, when the seat back pad members 1 and 1a having long armrests are released from the mold A, it is difficult to pull out the portion 1a to be the armrest from the inside of the mold A, and it takes time to remove the mold. There was a problem that was not good.

The present invention has been made in view of such conventional problems, and reduces the production cost because the pad main body forming the backrest of the seat and the arm pad forming the armrest are separately molded. It is an object of the present invention to provide a seat back that is capable of improving production efficiency.

"Means for Solving the Problem" The gist of the present invention for achieving such an object is a seat back integrally having an armrest protruding from a side portion, and a foamed pad member, A seat back including a frame member holding the pad member, the frame member including a frame main body holding the pad main body, and an arm frame integrally projecting forward on a side portion of the frame main body. In the above, the pad member is composed of a pad main body which constitutes a backrest of a seat and an arm pad which is formed separately from the pad main body and constitutes an armrest. Attach the arm pad to the tip of the arm frame that protrudes from the main body, and connect the pad body and the arm pad so that they are integrated. The seat back is characterized in that the armrest and the seat back are integrated and covered with a skin member.

[Operation] In order to produce a seat back, first, the pad member is foam-molded. The pad member includes a pad body that constitutes a backrest of a seat and an arm pad that constitutes an armrest.

The pad main body is foam-molded by a main molding die which is a large molding die, while the arm pad is foam-molded by a supplementary molding die which is a small molding die.

When it is desired to change only the length or shape of the armrest portion of the seat back, the arm pad may be formed by a supplemental molding die selected from a plurality of auxiliary molding dies corresponding to the desired armrest.

In this case, as the pad member forming the backrest of the seat, a pad main body foam-molded by a common main mold can be used.

Since the auxiliary molding die can be made considerably smaller than the main molding die, even if a plurality of auxiliary molding dies are prepared, the cost is lower than when a plurality of large molding dies are prepared.

Further, since the pad body and the arm pad are molded by separate molding dies, the internal shape of the molding die is not complicated, and the pad body or the like, which is a foamed product, can be easily removed from the mold.

The arm frame on which the arm pad is mounted is formed in a shape corresponding to the arm pad having a predetermined length and shape, and is fixed to the frame body in advance.

Thereby, the frame member of the seat back is formed.

The pad main body constituting the backrest is mounted on the frame main body of the frame member, and then the arm pad is mounted on the arm frame protruding from the pad member.

This allows the pad body and the arm pad to be connected together.

[Examples] Various examples of the present invention will be described below with reference to the drawings. In addition, in the various embodiments, the same reference numerals are given to the same types of parts, and duplicate description will be omitted.

1 and 2 show a first embodiment of the present invention.

As shown in FIGS. 1 and 2, the seat back 20 is
It is used for a backrest of a driver's seat 10 for a train whose height can be adjusted by a support rod 11.

The seat back 20 includes a frame member 30 and the frame member 30.
It comprises a pad member 60 attached to 30 and a skin member 90 covered from above.

The pad member 60 includes a pad main body 70 that constitutes the backrest of the driver's seat 10 and an arm pad 80 that constitutes an armrest that is formed separately from the pad main body 70.

The pad main body 70 includes a backrest portion 71 and a pair of side support portions 72 integrally formed on both sides of the backrest portion 71, and a pair of side support portions 72 are provided at their lower ends with insertion holes 73 opened in the front and rear direction. Has been done.

The arm pad 80 is formed separately from the pad body 70 by foaming, and a fitting hole 82 is formed in the base end portion 81.

The pad main body 70 is foam-molded by the large main molding die C shown in FIG. 4, while the arm pad 80 is foam-molded by the small auxiliary molding die D shown in FIG.

The frame member 30 includes a frame body 40 that holds the pad body 70, and an arm frame 50 that is fixed to the frame body 40 and holds the arm pad 80.

The frame body 40 is composed of plate frame members 41 on both sides, and an inverted U-shaped upper frame member 42 is laid across the upper ends of the plate frame members 41 on both sides and passed over the lower ends of the plate frame members 41 on both sides. The lower frame member 43 is constructed.

A reinforcing frame member 44 is installed on the upper frame member 42 in the left-right direction, and an S spring member 45 is installed between the plate frame members 41 on both sides. A support bracket 46 is fixedly provided at the lower end of the plate frame member 41.

The arm frame 50 is fitted into the insertion hole 73 of the pad body 70, and then fitted into the fitting hole 82 of the arm pad 80,
It constitutes an armrest of the seatback 20.

The arm frame 50 is formed by bending a wire member into a substantially U shape and fixing a receiving plate 53 to the base frame 52.
At the outer surface 41a of the plate frame member 41 of the frame body 40
Is stuck to.

The arm frame 50 is fitted in the insertion hole 73 of the pad main body 70 attached to the frame main body 40, and the arm pad is attached to the tip portion 51 of the arm frame 50 protruding from the insertion hole 73.
80 is fitted, and the pad body 70 and the arm pad 80 are connected.

Surfaces of the pad main body 70 and the arm pad 80, which are attached to the frame member 30 and integrally connected thereto, are covered with a skin member 90.

Next, the operation will be described.

The seat back 20 includes a frame body 40 and an arm frame 50.
First, the pad main body 70 and the arm pad 80 constituting the pad member 60 are respectively mounted on the frame member 30 composed of and, then, the skin main body member and the arm pad 80 are integrally connected to each other from above. 90 is produced by coating.

The frame member 30 is formed by fixing the arm frame 50 having the illustrated shape, which is formed to correspond to the shape of the arm pad 80, to the outer surface 41a of the plate frame material 41 of the frame body 40.

The pad main body 70, which constitutes the backrest of the driver's seat 10, which is the main part of the pad member 60, is formed by injecting the urethane stock solution into the main molding die C shown in FIG.

On the other hand, the arm pad 80 serving as an armrest is formed by injecting the urethane raw solution into the small-sized auxiliary molding die D shown in FIG.

In order to mount the foam-molded pad member 60 on the frame member 30, first, the arm frame 50 fixed to the frame body 40 by projecting is fixed to the insertion hole of the pad body 70.
The pad main body 70 is mounted so as to cover the frame main body 40 so as to fit into the 73.

As a result, the pad body 70 is held by the frame body 40, and the distal end portion 51 of the arm frame 50 projects forward from the insertion hole 73 of the pad body 70.

Next, the end portion 51 of the arm frame 50 protruding from the insertion hole 73 of the pad body 70 is fitted into the fitting hole 82 of the arm pad 80 that constitutes the arm rest.
The arm pad 80 is attached to the tip portion 51 of the 50.

As a result, the pad body 70 and the arm pad 80 are connected so as to be integrated with each other in a state where the arm pad 80 projects forward from the lower end of the side support portion 72 of the pad body 70.

If the surface of the pad main body 70 and the arm pad 80 that are attached to the frame member 30 and integrally connected are covered with the skin member 90, the backrest of the seatback 20 and the armrest are smoothly continuous, and the shape shown in the drawing is obtained. The seat back 20 of is completed.

When it is desired to change the length or shape of the armrest of the seatback 20, it is only necessary to newly prepare only a complementary molding die that foam-molds only the arm pad corresponding to the desired armrest.

The pad main body 70 forming the backrest of the seat back 20 and the side support may be foamed from a common main molding die C.

Since the auxiliary molding die D can be made considerably smaller than the main molding die C, even if a plurality of auxiliary molding dies C are prepared by casting, the cost is lower than that in the case of preparing a plurality of main molding dies C. Also, it does not take up any installation space.

Further, the internal shape of the main molding die C and the like is simpler than that of a molding die in which the pad main body 70 and the arm pad 80 are integrally foam-molded, so that the molded pad main body 70 and the like can be demolded. Is easy.

FIG. 3 shows a second embodiment of the present invention.

This embodiment shows a short seat back 20a of an armrest used for backing a passenger seat 10a for a train, and an arm pad 80a which constitutes a pad member 60a is formed by a complementary molding die E shown in FIG. The arm frame 50a that forms the frame member 30a by foam molding is molded so as to correspond to the length and shape of the arm pad.

As a result, even when the seat back 20a used for backing the passenger seat 10a having a short armrest is produced, the frame body 40 of the frame member 30a and the pad body 70 of the pad member 60a are common to the seat back 20 of the driver's seat. Since it can be used, the production cost can be suppressed.

In the various embodiments described above, two types of seat backs 20, 2 having a long armrest and a short armrest are used.
Although 0a was shown, if the arm pad is molded from a plurality of auxiliary molding dies corresponding to the desired armrest and the shape of the arm frame is made to correspond to the arm pad, the cost of the molding dies and the like can be reduced and the needs can be reduced. It is possible to provide seat backs with various specifications that conform to.

[Advantage of Invention] According to the seat back according to the present invention, the arm pad constituting the armrest is foam-molded separately from the pad main body constituting the backrest of the seat, so that the cost of the molding die can be suppressed and desired. Since the length and shape of the armrest can be molded, seat backs of various specifications can be produced without increasing the cost, and the internal shape of the molding die is simplified and mold release is facilitated, thus improving production efficiency. Can be improved.

[Brief description of drawings]

1 to 2 show a first embodiment of the present invention,
FIG. 1 is an exploded perspective view of a seat back, FIG. 2 is a perspective view of the seat back, and FIG. 3 shows a second embodiment of the present invention. An exploded perspective view of the seat back, FIGS. The figure shows a mold for a pad member of a seat back, FIG. 4 is a main mold for molding a pad body, FIG. 5 is a supplementary mold for molding a long arm pad, and FIG. 6 is a short arm pad. Complementary molding dies, FIGS. 7 and 8 show a conventional molding die for a pad member of a seat back. 20, 20a… Seat back 30… Frame member 40… Frame body 41… Plate Frame material 42… Upper frame material 43… Lower frame material 50, 50a… Arm frame 53, 53a… Support plate 60, 60a… Pad member 70… Pad Body 71… Backrest 72… Side support 73… Insertion hole 80,80a… Arm pad 82,82a… Mating hole 90,90a… Surface member C… Main mold D, E… Complementary mold

Claims (1)

[Scope of utility model registration request] 1. A seat back integrally having an armrest protruding from a side portion, comprising a foamed pad member and a frame member for holding the pad member, the frame member being the pad body. In a seat back consisting of a frame main body for holding the seat and an arm frame integrally projecting forward on a side portion of the frame main body, the pad member includes a pad main body that constitutes a backrest of the seat, and the pad. It consists of an arm pad that is molded separately from the main body and constitutes an armrest.The pad main body is attached to the frame main body, and the arm pad is attached to the tip end of the arm frame protruding from the pad main body. Make sure that the arm pad and the seat back are connected together so that the arm rest and seat back are integrated and covered with a skin member. Seat back to the butterflies.