KR20140125577A - Seat-back frame for vehicle and manufacturing method thereof - Google Patents

Seat-back frame for vehicle and manufacturing method thereof Download PDF

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Publication number
KR20140125577A
KR20140125577A KR1020130043534A KR20130043534A KR20140125577A KR 20140125577 A KR20140125577 A KR 20140125577A KR 1020130043534 A KR1020130043534 A KR 1020130043534A KR 20130043534 A KR20130043534 A KR 20130043534A KR 20140125577 A KR20140125577 A KR 20140125577A
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KR
South Korea
Prior art keywords
frame
main frame
reinforcing
seat back
back frame
Prior art date
Application number
KR1020130043534A
Other languages
Korean (ko)
Inventor
육형섭
Original Assignee
주식회사다스
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Publication date
Application filed by 주식회사다스 filed Critical 주식회사다스
Priority to KR1020130043534A priority Critical patent/KR20140125577A/en
Publication of KR20140125577A publication Critical patent/KR20140125577A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68—Seat frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68—Seat frames
    • B60N2/682—Joining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • B62D65/14—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being passenger compartment fittings, e.g. seats, linings, trim, instrument panels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Seats For Vehicles (AREA)

Abstract

The present invention relates to a seat-back frame made of a synthetic resin and a manufacturing method thereof, wherein reinforcing frames are coupled to both sides of the main frame. According to one embodiment of the present invention, the seat-back frame includes a main frame which has a penetrated space therein and right and left side walls, and reinforcing frames coupled to both sides of the main frame. The main frame and the reinforcing frame are made of different synthetic resin materials, respectively.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a seat back frame for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a seat back frame for a vehicle and a method of manufacturing the same, and more particularly, to a seat back frame made of a synthetic resin to which a reinforcing frame is coupled to both sides of a main frame.

The frame that forms the skeleton of a car seat has been manufactured using steel, and as interest in automobile fuel consumption and environmental pollution has increased, studies on reducing the weight of automobiles have continued It is in progress.

However, the reason why the weight of the seat is increasing day by day is that it is actively coping with the laws and regulations to be strengthened along with the demand for comfort and convenience of the customers, which is a big obstacle to the lightening of automobiles, The increase is still a big burden.

For example, Korean Patent Laid-Open Publication No. 10-2005-0116183 (Patent Document 1) discloses a seat back frame which is made of a magnesium alloy, In order to improve the advantages and disadvantages of the magnesium alloy casting, the optimum weight and casting aspect can be dramatically improved. Based on the casting characteristics of the magnesium alloy, A magnesium alloy seatback frame for a vehicle and a molding method thereof.

However, the seat back frame of Patent Document 1 is certainly superior to a conventional seat back frame made of a steel material in terms of weight, but it is disadvantageous in that it is heavier than a seat back frame made of a plastic material.

Therefore, in recent years, development of a plastic back frame has been continued. For example, Korean Patent Registration No. 10-0340964 (Patent Document 2) discloses a seat back frame using a glass mat thermoplastic (GMT) material as an impact reinforcing synthetic resin.

However, in the case of the seat back frame disclosed in Patent Document 2, there is a problem that the manufacturing cost is increased due to complicated processing steps because the press method must be applied, and it is practically impossible to commercialize it because of the disadvantage that recycling is almost impossible.

KR 10-2005-0116183 A (December 12, 2005 open) KR 10-0487993 B1 (April 28, 2005 Enrollment)

An object of the present invention is to provide a seat back frame for an automobile and a method of manufacturing the seat back frame, which are light in weight, excellent in formability, and high in strength.

According to a preferred embodiment of the present invention, there is provided a portable terminal including a main frame having a space formed therein and having right and left side walls, and a pair of reinforcing frames respectively coupled to both sides of the main frame, And the frame is made of a different kind of synthetic resin material.

Here, the main frame is made of a thermoplastic fibrous material.

Further, the reinforcing frame is made of a carbon fiber-reinforced plastic material.

At this time, a step is formed along the rim of the reinforcing frame, an opening is formed at the lower end of the reinforcing frame, and the reinforcing frame is coupled to surround the side wall of the main frame.

(A) providing a main frame of a synthetic resin material; (b) providing a reinforcing frame made of a synthetic resin material different from the material of the main frame; and (c) attaching the reinforcing frame to both sides of the main frame. The seat back frame including a plurality of seat backs.

In the step (a), the main frame is made of a thermoplastic fibrous material.

In the step (b), the reinforcing frame is made of a carbon fiber-reinforced plastic material.

In addition, in the step (c), the reinforcing frame is coupled so as to surround both sides of the main frame.

According to one embodiment of the present invention, it is possible to manufacture a seat back frame for an automobile which is light in weight, excellent in formability, and high in strength, and thus can contribute to improvement in fuel efficiency due to weight reduction of automobiles.

1 is an exploded perspective view of a seat back frame for an automobile according to an embodiment of the present invention;
Fig. 2 is a state in use of a vehicle seatback frame according to an embodiment of the present invention; Fig.
3 is a graph showing a deformation angle of a seat back frame for a vehicle according to an embodiment of the present invention when a maximum load is applied to the headrest.
4 is a graph showing the maximum displacement of a seat back frame for a vehicle according to an embodiment of the present invention when a maximum load is applied to the headrest.
5 is a graph showing the maximum displacement of a seatback frame for a vehicle according to an embodiment of the present invention when a maximum load is applied to the seatback frame.
6 is a flowchart of a manufacturing method of a seat back frame for an automobile according to an embodiment of the present invention.

Hereinafter, preferred embodiments of a seat back frame for a vehicle and a method of manufacturing the same will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as exemplifications of the constituent elements set forth in the claims of the present invention, and are included in technical ideas throughout the specification of the present invention, Embodiments that include components replaceable as equivalents in the elements may be included within the scope of the present invention.

Example

FIG. 1 is an exploded perspective view of a vehicle seatback frame according to an embodiment of the present invention, and FIG. 2 is a view illustrating a state of use of a seatback frame for a vehicle according to an embodiment of the present invention.

1 and 2, a vehicle seat back frame 100 according to an embodiment of the present invention includes a main frame 200 and a reinforcing frame 300 .

The main frame 200 forms the overall appearance of the seatback frame 100 and supports the back portion of the occupant. A lumbar support 400 is installed in the space 210 of the main frame 200 when the seat assembly is performed.

The main frame 200 has a rectangular shape as a whole, and a space 210 is formed through the center of the main frame 200, and side walls 220 protrude forward on both sides. And a hinge hole 240 for hinge connection is formed through the seat cushion frame (not shown) on both sides of the lower end.

In addition, a plurality of fastening holes 250 are formed on both side walls of the main frame 200 so as to be spaced apart from each other in the height direction. The coupling hole 250 is for coupling the reinforcing frame 300 to be described later. When the seatback frame 100 is assembled, a fastener such as a bolt is inserted and coupled.

According to one embodiment of the present invention, the main frame 200 is made of a thermoplastic long fiber (LFT) material. At this time, the main frame 200 can be manufactured by injection molding or press molding. Preferably, the main frame 200 is manufactured by injection molding.

As described above, when the main frame 200 is made of a thermoplastic fibrous material, the weight of the main frame 200 is much smaller than that of a metal material such as a steel or a magnesium alloy.

In recent years, the lumber support 400, the recliner actuator 500 and the like are additionally mounted on the seat as an additional function of the seat. Therefore, the shape of the seat back frame 100 is complicated in order to provide a mounting space for these additional devices.

Accordingly, in selecting the synthetic resin material as the material of the seatback frame 100 for reducing the weight of automobiles, the formability must be considered as an element to be considered. In accordance with this demand, the seatback frame 100 according to an embodiment of the present invention can use a thermoplastic fibrous material as a material of the main frame 200, and can manufacture a complicated shaped seatback frame 100 .

On the other hand, when a load is applied to the headrest (not shown) while the occupant is seated, stress tends to be concentrated on both side walls 220 of the main frame 200. Further, it is necessary to reinforce the rigidity of the seatback frame 100 in order to ensure the safety of the passenger in the event of a vehicle collision. Accordingly, one embodiment of the present invention reinforces the rigidity of the seatback frame 100 by connecting the reinforcing frame 300 to both side walls 220 of the main frame 200.

At this time, the reinforcing frame 300 is made of carbon fiber reinforced plastics (CFRP) having excellent strength. The reinforcing frame 300 can be manufactured by injection molding or press molding. And is preferably manufactured by compression molding using a press or the like.

The reinforcement frame 300 has a bar shape having a length longer than the width, and the step 310 protrudes along the rim and the opening 320 is formed at the lower end. Therefore, when the reinforcing frame 300 is coupled to the main frame 200, the rim of the main frame 200 is coupled by the step 310 of the reinforcing frame 300.

A plurality of fastening holes 330 are formed in the reinforcing frame 300 so as to be spaced apart from each other in the height direction. These fastening holes 330 correspond to the fastening holes 250 of the main frame 200 described above. When the main frame 200 and the reinforcement frame 300 are coupled to each other, the reinforcement frame 300 is supported on both sides of the main frame 200, and fasteners such as bolts are fastened through the fastening holes 330, (250) so as to be coupled.

The seat back frame 100 according to an embodiment of the present invention is much lighter than a conventional metal seat back frame, which can contribute to the weight reduction of automobiles. Further, since the main frame 200 is manufactured using a thermoplastic fibrous material, the moldability is excellent. In addition, reinforcing frames 300 of carbon fiber reinforced plastic material are bonded to both sides of the main frame 200, so that the rigidity is reinforced.

3 to 5 are graphs showing results of strength test analysis of a seat back frame for an automobile according to an embodiment of the present invention.

According to a test standard required by a vehicle maker, the strength of the headrest assembly coupled to the top of the seatback frame 100 is less than or equal to a maximum deformation amount of the seatback frame 100 of 130 mm or less at a maximum load of 90 kgf, ) 45 [deg.]. The strength of the seat back frame 100 is required to be 50 mm or less at the maximum load of 50 kg · f load.

3 shows that when the maximum load 883 N (90 kgf) is applied to the headrest at the upper end of the seatback frame 100, the angle of deformation of the seatback frame 100 is 66.4 degrees, which satisfies the above- .

4 shows the maximum displacement of the seatback frame 100 when a maximum load of 883 N is applied to the headrest, and a maximum displacement of 2.87 mm occurs in the headrest joining portion 230, and the strength of the headrest assembly Meets the requirement criteria.

5 shows that the maximum displacement of the seat back frame 100 at a maximum load of 50 kg · f is 4.28 mm, which satisfies the above-mentioned strength demand criteria of the seat back frame.

In other words, the seat back frame 100 according to an embodiment of the present invention meets the strength requirements of the seat back frame and the headrest assembly proposed by the automobile maker, and furthermore, the weight of the seat back frame is lighter than the conventional seat back frame, It has excellent advantages.

6 is a flowchart of a manufacturing method of a seat back frame for an automobile according to an embodiment of the present invention. Hereinafter, a method of manufacturing the seat back frame 100 according to an embodiment of the present invention will be described with reference to FIG.

Mainframe Provisioning Phase ( S10 );

The main frame 200 is made of a thermoplastic long-fiber (LFT) material. At this time, the main frame 200 can be manufactured by injection molding or press molding. Preferably, the main frame 200 is manufactured by injection molding. The main frame 200 has a rectangular shape as a whole, a space 210 is formed at the center thereof, and side walls 220 protrude forward from both sides.

Strengthening frame provision step ( S20 );

The reinforcing frame 300 is made of carbon fiber reinforced plastic (CFRP). At this time, the reinforcing frame 300 may be manufactured by injection molding or press molding. Preferably, the reinforcing frame 300 is formed by compression molding using a press or the like. The reinforcing frame 300 is formed in a shape corresponding to the side walls 220 of the main frame 200 as a whole. A step 310 is protruded along the rim of the reinforcing frame 300 and an opening 320 is formed at the lower end of the reinforcing frame 300.

Mainframe and Reinforcement Frame Coupling Phase ( S30 );

The reinforcing frame 300 is supported on the main frame 200 so that the fastening holes 330 of the reinforcing frame 300 correspond to the fastening holes 250 of the main frame 200. At this time, the main frame 200 is received in the receiving groove 340 surrounded by the edge 310 of the frame 300, and the edge 310 of the edge of the reinforcing frame 300 is received by the side walls of the main frame 200 220). Thereafter, a fastener such as a bolt is fastened to the fastening hole 250 through the fastening hole 330 to connect the main frame 200 and the reinforcing frame 300 to each other.

The seatback frame 100 according to an embodiment of the present invention is designed to compensate for the disadvantage that the weight of the seatback frame is high while maintaining the advantage of the rigidity of the seatback frame made of the conventional steel material.

For this purpose, carbon fiber reinforced plastic (CFRP) material was used to achieve the strength of conventional steel materials.

Considering that carbon fiber-reinforced plastic has a low moldability and thus it is difficult to realize a complicated shape, the main frame 200, which requires a complex shape, uses a thermoplastic long fiber (LFT) material having excellent moldability A reinforcing frame 300 made of a carbon fiber reinforced plastic material is bonded to both side walls 220 of the main frame 200 which require strength reinforcement.

100: Seatback frame
200: Mainframe
210:
220: side wall
230: Headrest coupling portion
240: Hinge ball
250: fastening hole
300: reinforcement frame
310: step
320: opening
330: fastening hole
340: receiving groove
400: Lumber Support
500: Actuator

Claims (8)

A main frame having a space portion formed therein and having right and left side walls; And
And a pair of reinforcing frames respectively coupled to both sides of the main frame,
Wherein the main frame and the reinforcing frame are made of different kinds of synthetic resin materials.
The apparatus according to claim 1,
A seat back frame for an automobile, characterized in that it is made of a thermoplastic fibrous material.
[2] The apparatus according to claim 1,
A seat back frame for an automobile characterized by being made of a carbon fiber reinforced plastic material.
The method according to claim 1,
Wherein the reinforcing frame is folded along a rim of the reinforcing frame, an opening is formed at a lower end of the reinforcing frame, and the reinforcing frame is coupled to surround the side wall of the main frame.
(a) providing a mainframe of synthetic resin material;
(b) providing a reinforcement frame made of a synthetic resin material different from the material of the main frame; And
(c) joining the reinforcing frame to both sides of the main frame.
6. The method of claim 5, wherein the step (a)
Wherein the main frame is made of thermoplastic fibrous material.
The method of claim 5, wherein the step (b)
Wherein the reinforcing frame is made of a carbon fiber-reinforced plastic material.
The method of claim 5, wherein the step (c)
Wherein the reinforcing frame is coupled to surround both sides of the main frame.


KR1020130043534A 2013-04-19 2013-04-19 Seat-back frame for vehicle and manufacturing method thereof KR20140125577A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101666423B1 (en) * 2015-10-07 2016-10-17 현대다이모스(주) Seat back frame for a vehicle and and manufacturing method thereof
KR101695308B1 (en) 2015-11-18 2017-01-13 한화첨단소재 주식회사 Third floor with improved rigidity of the second hollow-type vehicle rear seat back frame
KR20200023888A (en) 2018-08-27 2020-03-06 전갑성 Femoral manual massage device
KR20200082913A (en) * 2018-12-31 2020-07-08 한화글로벌에셋 주식회사 Seat back frame for car and method for manufacturing the same
JP2021006455A (en) * 2016-08-09 2021-01-21 テイ・エス テック株式会社 Seat frame
KR102376941B1 (en) * 2021-11-01 2022-03-21 광명산업(주) Seat frame applied with an insert type upper cross member
US20220227266A1 (en) * 2021-01-19 2022-07-21 Faurecia Sièges d'Automobile Vehicle seat backrest
WO2023113313A1 (en) * 2021-12-13 2023-06-22 주식회사 포스코 Seat back

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101666423B1 (en) * 2015-10-07 2016-10-17 현대다이모스(주) Seat back frame for a vehicle and and manufacturing method thereof
KR101695308B1 (en) 2015-11-18 2017-01-13 한화첨단소재 주식회사 Third floor with improved rigidity of the second hollow-type vehicle rear seat back frame
JP2021006455A (en) * 2016-08-09 2021-01-21 テイ・エス テック株式会社 Seat frame
KR20200023888A (en) 2018-08-27 2020-03-06 전갑성 Femoral manual massage device
KR20200082913A (en) * 2018-12-31 2020-07-08 한화글로벌에셋 주식회사 Seat back frame for car and method for manufacturing the same
US20220227266A1 (en) * 2021-01-19 2022-07-21 Faurecia Sièges d'Automobile Vehicle seat backrest
US11975636B2 (en) * 2021-01-19 2024-05-07 Faurecia Sièges d'Automobile Vehicle seat backrest
KR102376941B1 (en) * 2021-11-01 2022-03-21 광명산업(주) Seat frame applied with an insert type upper cross member
WO2023113313A1 (en) * 2021-12-13 2023-06-22 주식회사 포스코 Seat back

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