JP2012232731A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat which enables a reduction in the number of part items as well as in weight.SOLUTION: A seat back frame 30 integrally including an upper frame 31 and two side frames 33 on the right and left constituting a framework of a seat back 20 is integrally formed with a synthetic resin. A contour mat 35 elastically supporting a back of a seated person is integrally formed between the two side frames 33 of right and left of the seat back frame 30. Further, a plate 50 having a fitting recess 51 for fitting an air conditioning fan unit 60 is integrally formed between the two side frames 33.

Description

  The present invention relates to a vehicle seat.

2. Description of the Related Art Conventionally, a seat back frame that forms a skeleton part of a seat back of a vehicle seat is connected to an upper frame portion in which a metal pipe material is bent into an inverted U shape, and both left and right lower end portions of the upper frame portion. In general, it is mainly composed of left and right side frame portions formed by bending a metal plate.
Further, the contour mat portion that elastically supports the back of the seated person is formed by being bent into a required shape by a metal spring wire, and is then fixed between the left and right side frame portions. The
In addition, in order to mount the air conditioning fan unit on the seat back of the vehicle seat, brackets dedicated to the fan unit are mounted across the left and right side frame parts, and the air conditioning fan unit is attached to this bracket with screws or the like. It is known to wear.
For example, Patent Document 1 discloses a vehicle seat equipped with such an air conditioning fan unit.

JP 2009-291310 A

By the way, in the above-described conventional seat back of a vehicle seat, first, the upper frame portion and the left and right side frame portions are individually formed and then assembled together. Next, the contour mat portion is fixed between the left and right side frame portions.
In addition, a fan unit dedicated bracket is manufactured and prepared, and the fan unit dedicated bracket is mounted across the left and right side frame portions.
For this reason, the number of components and the number of assembling steps increase, resulting in an increase in cost.
Moreover, since the seat back frame, the contour mat portion, and the bracket dedicated to the fan unit are each made of metal, it is difficult to reduce the weight.

  In view of the above problems, an object of the present invention is to provide a vehicle seat that can reduce the number of components and can reduce the weight.

In order to solve the above-mentioned problem, a vehicle seat according to claim 1 of the present invention is a synthetic resin material in which a seat back frame integrally including an upper frame portion that forms a skeleton portion of the seat back and left and right side frame portions is integrated. Are integrally formed by
Between the left and right side frame portions of the seat back frame, a contour mat portion that elastically supports the back of the seated person is integrally formed,
Furthermore, a plate having a mounting recess in which a fan unit for air conditioning is mounted is integrally formed between the left and right side frame portions.

According to the above configuration, the seat back frame integrally including the upper frame portion and the left and right side frame portions is integrally formed of the synthetic resin material, and the contour mat portion is integrally formed between the left and right side frame portions. It is formed.
Further, the air conditioning fan unit can be easily mounted in the mounting recess of the plate formed integrally between the left and right side frame portions.
For this reason, the number of components and assembly man-hours can be reduced to reduce the cost, and the weight can be reduced as compared with a conventional metal product.
Furthermore, it is possible to manufacture a dedicated bracket for the fan unit and save the trouble of assembling the dedicated bracket to the seat back frame.

The vehicle seat according to claim 2 is the vehicle seat according to claim 1,
The left and right side frame portions are respectively provided with attachment portions for attaching the skin material.

  According to the above configuration, the skin material can be satisfactorily stretched between the both side frame portions by attaching the skin material to the attachment portions of the left and right side frame portions.

A vehicle seat according to claim 3 is the vehicle seat according to claim 1 or 2,
The left and right side frame portions are provided with reinforcing fiber tapes extending in the vertical direction.

  According to the above configuration, the left and right side frame portions can be reinforced by the reinforcing fiber tape extending in the vertical direction, and the strength of the seat back frame can be ensured satisfactorily.

It is a perspective view which simplifies and shows the vehicle seat which concerns on Example 1 of this invention. It is the plane sectional view which similarly follows the II-II line of FIG. It is a perspective view which similarly shows a seat back frame. It is a plane sectional view which follows the IV-IV line of FIG. 3 similarly. It is a plane sectional view which follows the VV line of FIG. 3 similarly. It is a perspective view which shows the state by which the skin material was stretched between the right-and-left both side frame part of the seat back frame of the vehicle seat which concerns on Example 2 of this invention. It is a plane sectional view which follows the VII-VII line of Drawing 6 similarly.

  A mode for carrying out the present invention will be described in accordance with an embodiment.

A vehicle seat according to Embodiment 1 of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the vehicle seat includes a seat cushion 10 and a seat back 20 supported at the rear portion of the seat cushion 10 so as to be tiltable in the front-rear direction by a reclining mechanism.
As shown in FIG. 2, the seat back 20 includes a seat back frame 30 that forms a skeleton, a pad 21 made of urethane foam or the like disposed from the front side of the seat back frame 30 to the left and right sides, and the pad. And an outer skin 22 covering the surface of 21.

As shown in FIGS. 3 and 4, the seat back frame 30 is formed by filling a molding die with a synthetic resin material (including a synthetic resin material mixed with reinforcing fibers). The seat back frame 30 includes an upper frame portion 31, left and right side frame portions 33 that are integrally extended downward from left and right edge portions of the upper frame portion 31, and both left and right side frame portions. The lower frame 33 is provided with a lower frame portion 34 whose both ends are integrally joined.
Further, the upper frame portion 31 is integrally formed with a headrest support portion 32 having a cylindrical shape in the vertical direction in which the headrest stay is fitted and inserted.

As shown in FIGS. 3 and 4, the left and right side frame portions 33 are formed with a plurality of concave portions 33a that open in the horizontal direction at predetermined intervals in the vertical direction. As a result, the strength can be ensured while achieving weight reduction and material saving.
In the upper frame portion 31 as well, it is desirable to ensure strength while reducing weight and reducing material by appropriately forming, for example, a recess opening rearward.

As shown in FIGS. 3 and 4, a contour mat portion (spring portion) 35 that elastically supports the back of the seated person is provided between the left and right side frame portions 33, and the seat back frame 30 is placed in the mold. At the same time, it is formed integrally with a synthetic resin material.
In the first embodiment, the contour mat portion 35 has a plurality of lateral slits 37 arranged at predetermined intervals in the vertical direction of a flat plate portion whose both ends are integrally coupled to the left and right side frame portions 33. Thus, the elastic band plate portion 36 is formed so as to be able to bend and deform in the front-rear direction.

  Further, in the first embodiment, as shown in FIGS. 3 and 4, the reinforcing fiber tapes 40 and 41 extending in the vertical direction from the upper end to the lower end of both the front and rear surfaces (at least one side surface) of the left and right side frame portions 33. Is embedded with the surface side exposed by insert molding. Accordingly, it is desirable to increase the strength of the seat back frame 30.

As shown in FIGS. 3 and 5, an air conditioning fan unit 60 having a fan 65 is mounted between the left and right side frame portions 33 of the seat back frame 30 in order to provide the seat back 20 with an air conditioning function. The plate 50 having the mounting recess 51 is formed integrally with the synthetic resin material at the same time as the seat back frame 30 is formed in the mold. The left and right end portions of the plate 50 are integrally coupled to the left and right side frame portions 33.
Further, a through hole 52 for air intake is formed in the bottom surface of the mounting recess 51 of the plate 50, and a required number of mounting holes 53 for mounting the case 61 of the fan unit 60 is formed around the mounting recess 51. ing.
The fan unit 60 is mounted on the seat back frame 30 by fixing the case 61 to the mounting hole 53 around the mounting recess 51 with a bolt.
As shown in FIG. 3, the case 61 of the fan unit 60 is formed with an air outlet 62 for blowing air-conditioned air toward the front of the seat back 20.

The vehicle seat according to the first embodiment is configured as described above.
Accordingly, the contour mat portion 35 is integrally formed between the left and right side frame portions 33 of the seat back frame 30 integrally with the synthetic resin seat back frame 30. For this reason, compared with the conventional one in which the seat back frame and the contour mat part are individually manufactured and assembled, the number of component parts and the number of assembling steps can be reduced, and the cost of the conventional metal can be reduced. Weight reduction can be achieved compared to the product made.
Moreover, since both the left and right side frame portions 33 are reinforced by the reinforcing fiber tapes 40 and 41 extending in the vertical direction, the strength of the seat back frame 30 can be secured satisfactorily.

Further, the case 61 of the air conditioning fan unit 60 is bolted to the mounting hole 53 provided around the mounting recess 51 of the plate 50 integrally formed between the left and right side frame portions 33 of the seat back frame 30. Can be easily mounted.
For this reason, it is possible to eliminate the trouble of manufacturing a dedicated bracket for the fan unit and assembling the dedicated bracket to the seat back frame.

Next, a vehicle seat according to Embodiment 1 of the present invention will be described with reference to FIGS.
As shown in FIGS. 6 and 7, the left and right sides of the skin material 22 a constituting the central portion in the width direction of the front surface of the seat back 20 of the skin 22 are located on the back side of the facing surfaces of the left and right side frame portions 33. Left and right attachment portions 70 having attachment surfaces 70a for attaching the portions are formed in steps.
The left and right edges of the skin material 22a are attached to the attachment surfaces 70a of the attachment portions 70 of the left and right side frame portions 33 by tacking, bonding, clip fastening, etc., and the skin material 22a is stretched.

Thereafter, pads 21 made of urethane foam or the like are disposed from the mounting surface 70a of the seat back frame 30 to the front surface, left and right side portions, and the rear portion of the seat back frame 30. The seat back 20 is configured by covering the surface of the pad 21 with the skin 22.
Since other configurations of the second embodiment are configured in the same manner as the first embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted.

The vehicle seat according to the second embodiment is configured as described above.
Therefore, this second embodiment also has the same operational effects as the first embodiment.
In particular, the skin material 22 a can be satisfactorily stretched between the side frame portions 33 by engaging the skin material 22 a with the attachment surfaces 70 a of the attachment portions 70 of the left and right side frame portions 33. .
In addition, in the upper frame portion 31 and the lower frame portion 34, it is desirable that attachment portions each having an attachment surface that is flush with the attachment surfaces 70a of the left and right attachment portions 70 are formed. In this case, the four peripheral edges of the skin material 22a can be attached more satisfactorily by tacking, bonding, clipping, or the like.

  In addition, this invention is not limited to the said Example 1 and 2, In the range which does not deviate from the summary of this invention, it can implement with a various form.

20 Seat back 22 Skin 22a Skin 30 Seat back frame 31 Upper frame part 32 Headrest support part 33 Side frame part 35 Contour mat part 40, 41 Reinforcing fiber tape 50 Plate 51 Mounting recess 52 Through hole 70 Mounting part

Claims (3)

A seat back frame that integrally includes an upper frame portion that forms a skeleton portion of the seat back and both left and right side frame portions is integrally formed of a synthetic resin material,
Between the left and right side frame portions of the seat back frame, a contour mat portion that elastically supports the back of the seated person is integrally formed,
Furthermore, a plate having a mounting recess in which an air conditioning fan unit is mounted is integrally formed between the left and right side frame portions. The vehicle seat according to claim 1,
A vehicle seat characterized in that attachment parts for attaching a skin material are formed on both left and right side frame parts, respectively. The vehicle seat according to claim 1 or 2,
A vehicle seat characterized in that reinforcing fiber tapes extending in the vertical direction are disposed on both the left and right side frame portions.

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