JP3029799U - Backboard structure behind the seat back - Google Patents

Abstract

(57) Abstract: A backboard on the back of a seat back can be manufactured at low cost using a relatively small press machine. SOLUTION: A skin material 1 for a backrest of a vehicle front seat 10
The reference numeral 2 is attached to a metal seat frame with a fixing member such as a tack in a state in which the backrest is bent from the front surface to the rear edge portion. The backboard 14 is composed of a hardboard base material formed into a predetermined shape and a skin material, and the end portion of the skin material is attached to the hardboard base material by a staple, a clip, a tacker, an adhesive or the like. The hardboard with a predetermined shape is immersed in a water tank filled with hot water at a temperature of 70 ° C for 20 seconds, then naturally dried to a water content of 27%, sandwiched in a mold preheated to a temperature of 200 ° C, and hot pressed. It is press molded and used as a hardboard substrate.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a backboard structure for covering a back surface of a seat back such as a front seat of an automobile. The skin material of the backrest (front seat back) of the front seat of the automobile is bent from the front to the back edge of the backrest, and then fixed to the metal seat frame with staples, clips and other fixing parts. It can be attached. However, if left untouched, the edges of the skin material and the stapler will be exposed and unsightly, so it is necessary to cover them up aesthetically. The back board on the back of the seat back serves as a cover that covers the above-mentioned mounting part so that it cannot be seen from the outside, and the back seat has a dish-shaped recess to prevent the knees from getting in the way while the passenger is seated. It has the shape that it has, and also has the role of protecting the knee from the impact during sudden braking. Therefore, the backboard base material for automobile parts has a shape that not only satisfies the required cold resistance of -40 ℃ to 80 ℃, but also does not hinder the knees of passengers in the rear seats. In order to achieve this, it is necessary to be able to form a complex three-dimensional shape, and it is also necessary for the material to have sufficient impact absorption and strength to protect the knees of the passengers in the rear seats.

[0002]

[Prior art]

 As a conventional backboard for the back of a seat back, a resin molded product obtained by injection molding or the like is generally used as a backboard base material. This is because it is easy to obtain the synthetic resin material having the weather resistance, moldability, impact absorption and strength as the above-mentioned automobile parts.

[0003]

[Problems to be solved by the device]

 However, in the conventional backboard structure on the back of the seat back as described above, the mold for the backboard base material is relatively large, and accordingly, a relatively large injection molding machine is required. Therefore, there is a problem that the capital investment is expensive, and since sufficient shock absorption and strength are required, a relatively expensive material such as engineering plastic is required, which makes the backboard inexpensive. Not only is it difficult to manufacture, but there is also the problem that it is not easy to recycle synthetic resin moldings when resources are scrapped. Therefore, it is conceivable that the backboard on the back of the seat back is composed of a hard board having weather resistance, shock absorption, and strength, but the hard board has a difficulty in forming a complicated three-dimensional shape, and in the past, the hard board has been difficult to form. Since a large press machine was required to cope with a complicated three-dimensional shape having a dish-shaped recess, even in this case, as in the case of the above-mentioned injection-molded product, the equipment investment is large and the backboard However, there is a problem that it is difficult to manufacture at low cost. Furthermore, it is conceivable that the backboard on the back of the seatback is composed of a single metal, but in this case, it is difficult to obtain an inexpensive material that has both predetermined shock absorption and shape restoration properties. There is a point. The present invention aims to solve such problems.

[0004]

[Means for Solving the Problems]

 The present invention makes it possible to press-mold the backboard on the back of the seat back even with a relatively small press machine by immersing the hardboard in predetermined hot water for softening treatment, and then performing the predetermined drying process. This solves the above problem. That is, the backboard structure on the back side of the seat back according to claim 1 of the present invention is such that the hard board having a predetermined shape is immersed in a water tank filled with warm water at a predetermined temperature for a predetermined time, and then naturally dried to contain water. Of the hardboard base material (14a), which is heat-pressed into a shape having a predetermined dish-shaped concave portion by sandwiching it in a mold heated in advance to a predetermined temperature, and the hardboard base material (14a). And a skin material (14b) which covers from the front surface to the back edge portion and is attached to the hard board base material (14a) with the terminal portion (14c). In the second aspect of the present invention, the hardboard base material (14a) is prepared by immersing the hardboard in a water tank filled with warm water at a temperature of 70 ° C for 20 seconds and then naturally drying the hardboard to have a water content of 27%. It is characterized by being hot-pressed and molded by a mold heated to a temperature of 200 ° C. in advance. The reference numerals in parentheses indicate the corresponding members of the embodiment.

[0005]

[Action]

 By subjecting the hardboard to a predetermined softening treatment as a pretreatment, the hardboard is softened to the extent that deep drawing can be performed even with a relatively small press machine.Therefore, it is necessary to use a large press machine. Even a backboard with a relatively large and complicated seat back surface can be deep-drawn easily with a relatively small press machine. Then, the shape can be stabilized by performing a predetermined drying step. Since it is not necessary to use a large-sized press machine as in the past, it is possible to use an existing small-sized press machine, so it is possible to easily and inexpensively manufacture a backboard on the back of a seat back with a complicated shape. .

[0006]

[Embodiment of device]

 FIG. 1 shows the entire front seat of an automobile embodying the present invention, and FIG. 2 shows a backboard. FIG. 3 shows a cross section of the backboard taken along the line AA of FIG. The skin material 12 of the backrest (front seatback) of the front seat 10 of the automobile is bent from the front to the back edge of the backrest and is attached to the metal seat frame with a fixing member such as a stapler. However, since the entire surface of this mounting portion is covered with the backboard 14, the lid is covered so that it is not unsightly. The backboard 14 is composed of a hardboard base material 14a molded into a predetermined shape and a skin material 14b, and the end portions (outer edge portion and inner peripheral edge portion) 14c of the skin material 14b are stapled, tacked, or glued to the hardboard. It is attached to the base material 14a. The hardboard base material 14a is prepared by immersing a hardboard of a predetermined shape in warm water of a predetermined temperature for a predetermined time, and then naturally drying it for a predetermined time to adjust the water content and obtain a mold heated to a predetermined temperature. It is sandwiched and deep drawn. It should be noted that it is convenient for passengers to attach a bag for goods to the backboard 14.

[0007]

【Test results】

 According to the test results of the present inventor, the hardboard base material 14a is immersed in a water tank filled with hot water at a temperature of 70 ° C. for 20 seconds, and then naturally dried for a predetermined time to a water content of 27%, and the temperature is set to 200 It was found that it is preferable that the hardboard base material 14a is sandwiched in a mold heated to 0 ° C., hot pressed to form the hardboard base material 14a, and further dried naturally.

Next, the operation of this embodiment will be described. A backboard made of hardboard that has appropriate shock absorption and appropriate strength even when the occupant in the rear seat is pressed toward the front seat 10 of the automobile due to sudden braking of a running vehicle. 14 prevents the knees of the occupant from being damaged. As described above, the backboard 14 made of hard board has not only the proper shock absorption and strength, but also excellent weather resistance, and has a proven track record as an automobile part. Can be a board.

[0009]

[Effect of device]

 As described above, according to the present invention, the backboard on the back of the seat back, which is excellent in shock absorption, strength, weather resistance and reliability, can be installed in a large injection molding machine or an expensive injection molding die. It can be manufactured at low cost using a relatively small press machine without using.

[Brief description of drawings]

FIG. 1 is a diagram showing an entire front seat of a vehicle embodying the present invention.

FIG. 2 is a diagram showing a backboard.

FIG. 3 is a view showing a cross section taken along the line AA of FIG.

[Explanation of symbols]

 10 Car Front Seat 12 Back Cover Skin Member 14 Backboard 14a Hardboard Base Material 14b Skin Material 14c Terminal Section

Claims (2)

[Scope of utility model registration request] 1. In a backboard structure on the back of a seat back such as a front seat of an automobile, a water content is obtained by immersing a hardboard of a predetermined shape in a water tank filled with hot water of a predetermined temperature for a predetermined time and then naturally drying it. From the surface of the hardboard base material (14a), which is heat-pressed into a shape having a predetermined dish-shaped recess by sandwiching it in a mold heated in advance to a predetermined temperature. A backboard structure for a back surface of a seat back, comprising: a skin material (14b) that covers up to the back edge portion and is attached to the hardboard base material (14a) with a terminal portion (14c). 2. The hardboard base material (14a) is prepared by placing the hardboard in a water tank filled with hot water at a temperature of 70 ° C.
After soaking for 2 seconds, it is naturally dried to a water content of 27%,
The backboard structure on the back surface of the seat back according to claim 1, wherein the backboard structure is formed by hot press molding using a mold heated to a temperature of 200 ° C. in advance.