WO2016048071A1 - 시트백 프레임, 이의 제조방법 및 차량용 시트백 - Google Patents
시트백 프레임, 이의 제조방법 및 차량용 시트백 Download PDFInfo
- Publication number
- WO2016048071A1 WO2016048071A1 PCT/KR2015/010124 KR2015010124W WO2016048071A1 WO 2016048071 A1 WO2016048071 A1 WO 2016048071A1 KR 2015010124 W KR2015010124 W KR 2015010124W WO 2016048071 A1 WO2016048071 A1 WO 2016048071A1
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- WIPO (PCT)
- Prior art keywords
- frame
- seat back
- reinforced thermoplastic
- thermoplastic resin
- back frame
- Prior art date
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Classifications
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- 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
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14819—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being completely encapsulated
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/462—Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0092—Producing upholstery articles, e.g. cushions, seats
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- 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
- B60N2/686—Panel like structures
-
- 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
- B60N2/75—Arm-rests
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/771—Seats
Definitions
- a seatback frame a method of manufacturing the same, and a seatback for a vehicle
- the seatback frame is the basic skeleton of the seatback, which provides comfort and stability to the seated passengers, passengers and drivers by providing a comfortable and stable posture.
- the seat back frame is formed of steel, but this causes a problem of increasing cost and weight.
- driving performance and fuel efficiency are significantly reduced as the weight increases.
- the armrest is included to provide more convenience for passengers and drivers, the seatback frame and the armrest frame are manufactured separately, and then a manufacturing process for welding them is added, which further consumes time and cost, resulting in increased productivity. And there is also a problem of low economic efficiency.
- the seat back frame is manufactured using a single material made of steel, GMT (glass mat thermoplastic), or long fiber reinforced thermoplastic, but the thickness of the seat back frame has to be thick because it does not have sufficient stiffness and strength against external impact.
- the degree of freedom of design was very low.
- One embodiment of the present invention provides a seat back frame that implements excellent rigidity, excellent impact strength and excellent design.
- Another embodiment of the present invention provides a vehicle seat back including the seat back frame.
- Another embodiment of the present invention provides a method of manufacturing the seat back frame.
- the body frame comprising a long fiber reinforced thermoplastic (LFT) composite; And an interior frame including a continuous fiber reinforced thermoplastic (CFT) composite material embedded in the body frame by insert injection molding.
- LFT long fiber reinforced thermoplastic
- CFT continuous fiber reinforced thermoplastic
- the built-in frame may be preformed by press molding to implement a predetermined shape.
- the long fiber reinforced thermoplastic resin composite may include a thermoplastic resin and reinforcing long fibers
- the continuous fiber reinforced thermoplastic resin composite may include a thermoplastic resin and a continuous fiber for reinforcement.
- the continuous fiber reinforced thermoplastic resin composite may include about 60% by weight to about 70% by weight of the continuous fiber for reinforcement.
- the length of the continuous fiber for reinforcement may be greater than about 10cm.
- the long fiber-reinforced thermoplastic resin composite may include about 30% to about 40% by weight of the reinforcing long fibers.
- the length of the reinforcing long fiber may be about 50mm to about 100mm.
- thermoplastic resin included in the long fiber reinforced thermoplastic resin composite or the continuous fiber reinforced thermoplastic resin composite is selected from the group consisting of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, polyphenylene sulfide resin, and combinations thereof. It may include at least one selected.
- the reinforcing long fibers, the reinforcing continuous fibers, or both may include at least one selected from the group consisting of glass fibers, aramid fibers, natural fibers, polyester fibers, polyamide fibers, and combinations thereof.
- the seat back frame may further include an armrest frame, and the body frame and the armrest frame may be integrally formed.
- a vehicle seat back including the seat back frame.
- the step of pre-molding a continuous fiber reinforced thermoplastic (CFT) composite by press molding to prepare a built-in frame that implements a predetermined shape Providing a method for manufacturing a seat back frame comprising a step of inserting the inner frame in the long fiber reinforced thermoplastic (LFT) composite material and injection molding the inner frame is buried; do.
- CFT continuous fiber reinforced thermoplastic
- the press molding may be performed at a temperature of about 40 °C to about 60 °C.
- the press molding may be performed at a pressure of about 100,000 kgf / cm 2 to about 300,000 kgf / cm 2 .
- the seat back frame may implement excellent rigidity, excellent impact strength and excellent design.
- FIG. 1 is a schematic cross-sectional view of a seatback frame according to an embodiment of the present invention.
- FIG. 2 is a schematic process flowchart of a method of manufacturing a seatback frame according to another embodiment of the present invention.
- Figure 3 is a process diagram schematically showing a step (S1) of preparing a built-in frame of the manufacturing method.
- Figure 4 is a process diagram schematically showing a step (S2) of manufacturing the body frame of the manufacturing method.
- Example 5 is an image photograph showing the results of the falling ball impact test of Example 1 and Comparative Example 1.
- Example 6 is an image photograph showing the result of the baggage collision test of Example 1.
- any configuration is formed on the “top (or bottom)" of the substrate or “top (or bottom)” of the substrate means that any configuration is formed in contact with the top (or bottom) of the substrate.
- it is not limited to not including other configurations between the substrate and any configuration formed on (or under) the substrate.
- the body frame comprising a long fiber reinforced thermoplastic (LFT) composite; And an interior frame including a continuous fiber reinforced thermoplastic (CFT) composite material embedded in the body frame by insert injection molding.
- LFT long fiber reinforced thermoplastic
- CFT continuous fiber reinforced thermoplastic
- the seat back frame is press-molded using a steel material, or manufactured from a single material by press molding using a glass fiber mat thermoplastic material or a long fiber-reinforced thermoplastic material among thermoplastic resin materials.
- the thickness of the seat back frame should be almost constant and cannot be formed variably, such as becoming thicker or thinner, and it is difficult to form various appearances, resulting in poor design freedom.
- the seatback frame according to the embodiment of the present invention is a continuous fiber reinforced thermoplastic (CFT) composite material in the interior of the body frame containing a long fiber reinforced thermoplastic (LFT) composite
- CFT thermoplastic
- LFT long fiber reinforced thermoplastic
- the seat back frame 100 may include a main frame 110 including a long fiber reinforced thermoplastic (LFT) composite material; And an internal frame 120 including a continuous fiber reinforced thermoplastic (CFT) composite material embedded in the body frame 110 by insert injection molding.
- LFT long fiber reinforced thermoplastic
- CFT continuous fiber reinforced thermoplastic
- the built-in frame 120 may be preformed by press molding to implement a predetermined shape. That is, the interior frame 120 may be preformed as a preform by continuous molding of the continuous fiber-reinforced thermoplastic resin composite material to implement a predetermined shape.
- the structural rigidity of the molding may be improved because it is performed under high pressure conditions.
- thermoplastic resins effectively absorb external impacts compared to long-fiber-reinforced thermoplastic resins, and thus have higher rigidity and impact strength, but have low fluidity, making it difficult to form a uniform surface when press molding.
- the main frame may be injection molded to easily realize a more uniform appearance.
- the injection molding it is possible to integrally form the seat back frame 100 in which the inner frame 120 is buried inside the main body frame 110, so that the steps of separately manufacturing and attaching them separately are omitted. You can save more time and money.
- the long fiber reinforced thermoplastic resin composite may include a thermoplastic resin and reinforcing long fibers
- the continuous fiber reinforced thermoplastic resin composite may include a thermoplastic resin and a continuous fiber for reinforcement.
- thermoplastic resin included in the long fiber reinforced thermoplastic resin composite or the continuous fiber reinforced thermoplastic resin composite is selected from the group consisting of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, polyphenylene sulfide resin, and combinations thereof. It may include at least one selected, but is not limited thereto.
- the length of the continuous fiber for reinforcement may be, for example, greater than about 10 cm, specifically, greater than about 10 cm to about 1000 cm, but may be variously changed according to the purpose and function of the invention and is not particularly limited.
- the built-in frame 120 can implement a high level of rigidity and impact strength.
- the length of the reinforcing long fiber may be about 50mm to about 100mm.
- the reinforcing long fibers, the reinforcing continuous fibers or both may include at least one selected from the group consisting of glass fibers, aramid fibers, natural fibers, polyester fibers, polyamide fibers, and combinations thereof, but is not limited thereto. It doesn't happen.
- the continuous fiber reinforced thermoplastic resin composite may include about 60% by weight to about 70% by weight of the continuous fiber for reinforcement.
- the content within the above range to realize a high level of stiffness and impact strength at an appropriate cost to sufficiently protect the seated person from external impact, while appropriately adjusting the fluidity of the continuous fiber-reinforced thermoplastic resin composite to facilitate press molding Can be.
- the weight of the built-in frame 120 at an appropriately low level, it is possible to prevent the deterioration of driving performance and fuel efficiency of the vehicle.
- the continuous fiber reinforced thermoplastic resin composite may include from about 20% to about 30% by weight of the thermoplastic resin. By including the content within the above range it is possible to adequately control the fluidity of the continuous fiber-reinforced thermoplastic resin composite material to facilitate the press molding and to achieve a predetermined shape by press molding sufficiently.
- Tensile strength according to the conditions of ASTM D638 of the continuous fiber-reinforced thermoplastic resin composite may be about 300 MPa days to about 600 MPa, and bending strength according to the conditions of ASTM D790 may be about 350 MPa to about 500 MPa.
- the long fiber-reinforced thermoplastic resin composite may include about 30% to about 40% by weight of the reinforcing long fibers. By including the content within the above range it is possible to impart an appropriate level of rigidity and impact strength to the main body frame 110, but can also facilitate injection molding by appropriately adjusting the fluidity of the long fiber reinforced thermoplastic resin composite.
- the long fiber reinforced thermoplastic resin composite may include from about 50% to about 60% by weight of a thermoplastic resin. By including the content within the above range it is possible to sufficiently implement the shape of the seat back frame 100 to be implemented while making injection molding easier by adjusting the fluidity of the long fiber reinforced thermoplastic resin composite.
- the shape of the seat back frame 100 may be variously implemented according to the purpose and function of the invention, it is not particularly limited.
- the tensile strength of the long fiber reinforced thermoplastic resin composite may be about 100 MPa days to about 120 MPa, and the bending strength according to the conditions of ASTM D790 may be about 100 MPa to about 200 MPa.
- the continuous fiber-reinforced thermoplastic composite, the long fiber-reinforced thermoplastic composite or both may further include an additive, etc.
- the additive may be suitably used according to the purpose and properties of the art known in the art. .
- the armrest frame further comprises, the body frame 110 and the armrest frame may be integrally molded.
- the main body frame and the armrest frame are each formed in a separate manufacturing process, and then joined by a process of welding or joining.
- the seatback frame 100 may integrally form the body frame 110 and the armrest frame of the seatback frame 100 by injection molding, so the process of welding or combining them is omitted. This saves time and money, leading to superior economics, while improving design freedom, resulting in superior design.
- the armrest frame may be variously formed in a shape known in the art according to the purpose and function of the invention, for example, at least one selected from the group consisting of armrest portion, cup holder portion, hinge portion and combinations thereof It may include one, but is not limited thereto.
- the seatback frame 100 may further include a rib (lib) therein.
- a rib lib
- a plurality of ribs may be included, and thus, the durability of the seatback frame 100 may be further improved, and the impact force may be evenly distributed throughout the external impact, thereby realizing excellent stability.
- the number and shape of the ribs can be variously implemented according to the use and function of the invention, it is not particularly limited.
- the rib can be formed of a material comprising thermoplastic, fiber reinforced plastic, or both.
- the rib may be formed of the long fiber reinforced thermoplastic resin composite, thereby improving durability to more effectively disperse external impact force, and integrally formed with the main frame 110 by injection molding. This can save time and money by simplifying the manufacturing process.
- a vehicle seat back comprising the seat back frame 100.
- the vehicle seatback may further include a seat pad, a cover, and the like sequentially from the seatback frame 100 according to a method known in the art, and the seat pad and the cover may be variously known types without particular limitation. Can be used.
- Figure 2 schematically shows a process flow diagram of a method of manufacturing a seat back frame according to another embodiment of the present invention.
- the manufacturing method comprises the steps of preparing a built-in frame that implements a predetermined shape by preforming a continuous fiber reinforced thermoplastic (CFT) composite material by press molding (S1); And inserting the interior frame into an injection molding of a long fiber reinforced thermoplastic (LFT) composite to produce a main body frame in which the interior frame is embedded (S2).
- CFT continuous fiber reinforced thermoplastic
- LFT long fiber reinforced thermoplastic
- the seat back frame manufactured according to the manufacturing method is excellent by including a continuous fiber reinforced thermoplastic (CFT) composite in the body frame containing a long fiber reinforced thermoplastic (LFT) composite Rigidity and impact strength can be implemented to improve the stability while molding it by injection molding, and various appearances can be expressed, and thus there is an advantage in that excellent design can be realized.
- CFT continuous fiber reinforced thermoplastic
- LFT long fiber reinforced thermoplastic
- a continuous fiber reinforced thermoplastic (CFT) composite material may be preformed by press molding to prepare a built-in frame implementing a predetermined shape.
- Figure 3 schematically shows a process diagram of preparing a built-in frame of the manufacturing method (S1).
- thermoplastic resin composite is as described above in one embodiment of the present invention.
- the interior frame can realize a predetermined shape more firmly, thereby further improving the structural rigidity of the interior frame.
- the seatback frame including the embedded frame embedded therein may realize a high level of rigidity and impact strength.
- the press molding may be carried out, for example, at a temperature of about 40 ° C to about 60 ° C.
- the press molding may be performed at a pressure of, for example, about 100,000 kgf / cm 2 to about 300,000 kgf / cm 2 .
- a pressure of, for example, about 100,000 kgf / cm 2 to about 300,000 kgf / cm 2 .
- FIG. 4 schematically shows a process diagram of the step (S2) of manufacturing the body frame of the manufacturing method.
- the long fiber reinforced thermoplastic resin composite is as described above in one embodiment of the present invention.
- the inner frame pre-formed by press molding is insert-molded into the long fiber-reinforced thermoplastic composite to impart excellent rigidity and excellent impact strength to the seat back frame, and at the same time, the appearance of the seat back frame It is possible to easily implement a more uniform appearance by varying the surface by forming by injection molding in a relatively long-fiber-reinforced thermoplastic resin composite having a suitable fluidity.
- the insert injection molding method used when the interior frame is inserted into the long fiber reinforced thermoplastic resin composite by injection molding may be performed according to a method known in the art, and for example, After fixing the internal frame, injection molding may be performed through a process of injecting a long fiber reinforced thermoplastic resin composite into the injection mold, but is not limited thereto.
- the injection molding can be carried out at a temperature of about 30 ° C. to about 60 ° C., for example.
- a temperature of about 30 ° C. to about 60 ° C., for example.
- the injection molding can be performed at a pressure of, for example, about 10,000 kgf / cm 2 to about 300,000 kgf / cm 2 .
- a pressure of, for example, about 10,000 kgf / cm 2 to about 300,000 kgf / cm 2 By performing under pressure within the above range, the main body frame is sufficiently firmly formed, but the shape of the internal frame is not deformed, thereby maintaining a high level of structural rigidity even after insert injection molding, thereby providing excellent rigidity and impact strength to the seat back frame. can do.
- the main body frame and the armrest frame may be integrally formed by injection molding.
- the main body frame and the armrest frame are integrally formed, the process of separately preparing them and then welding or joining them is omitted, thereby reducing time and cost, thereby realizing excellent economy and improving design freedom. Excellent design can be achieved.
- the armrest frame may be variously formed in a shape known in the art according to the purpose and function of the invention, for example, at least one selected from the group consisting of armrest portion, cup holder portion, hinge portion and combinations thereof It may include one, but is not limited thereto.
- the main body frame in the step of manufacturing the main body frame, it can be produced by integrally forming the main body frame and the rib (lib) by injection molding, as described above further comprises the rib to the rigidity of the seat back frame And impact strength can be further improved.
- the manufacturing process since the body frame and the rib are integrally formed, the manufacturing process may be simplified to further reduce time and cost.
- the rib may include a plurality of ribs, thereby further improving the durability of the seat back frame, and evenly dispersing the impact force during an external impact, thereby realizing excellent stability.
- the number and shape of the ribs can be variously implemented according to the use and function of the invention, it is not particularly limited.
- the rib can be formed of a material comprising thermoplastic, fiber reinforced plastic, or both.
- the ribs may be formed of the long fiber reinforced thermoplastic resin composite, thereby improving durability to more effectively disperse external impact force, and may be integrally formed with the main frame by injection molding. Simplifying the manufacturing process saves time and money.
- a continuous fiber-reinforced thermoplastic resin composite including 30 wt% polypropylene resin and 60 wt% continuous glass fiber (GF) was press-molded under the conditions of 45 ° C. and 200,000 kgf / cm 2 to prepare an interior frame. Subsequently, the inner frame was fixed in an injection mold, and a continuous fiber-reinforced thermoplastic resin composite including 60 wt% of polypropylene resin and 30 wt% of long glass fiber (GF) was injected into the injection mold.
- a seatback frame was prepared by insert injection molding under a condition of 100,000 kgf / cm 2 to produce a main frame in which the internal frame was embedded.
- Tensile strength according to the conditions of ASTM D638 of the long fiber-reinforced thermoplastic resin composite material was 100Mpa
- bending strength according to the conditions of ASTM D790 was 120MPa
- tensile strength according to the conditions of ASTM D638 of the continuous fiber-reinforced thermoplastic resin composite material is 550Mpa
- the flexural strength according to the conditions of ASTM D790 was 450 MPa.
- a long back fiber reinforced thermoplastic composite including 50 wt% polypropylene resin and 40 wt% long glass fiber (GF) was injection molded under the conditions of 45 ° C. and 100,000 kgf / cm 2 to prepare a single sheet back frame. .
- Tensile strength according to the conditions of ASTM D638 of the long fiber-reinforced thermoplastic resin composite material was 120Mpa
- bending strength according to the conditions of ASTM D790 was 150MPa.
- Falling impact strength according to the falling ball impact test was measured by dropping the falling weight of the weight 4.0kg, hemispherical diameter 12.5mm by height to generate cracks, converting the height of the cracks to energy per unit area.
- Example 5 is an image photograph showing the results of the falling ball impact test of Example 1 and Comparative Example 1.
- the impact surface that collides with the drop weight is a continuous fiber reinforced thermoplastic resin composite (CFT)
- the impact back surface in contact with the impact surface is a long fiber reinforced thermoplastic resin composite (LFT).
- the impact surface and the impact back surface were both long fiber-reinforced thermoplastic resin composites (LFY).
- the crash test was performed using the test block of the size of 300 mm x 300 mm x 300 mm with respect to the seatback frame manufactured in Example 1 and the comparative example 1.
- the seatback frame according to Example 1 has a higher energy per unit area absorbed, so that the impact drop strength is excellent, and as shown in FIG. 5, cracks are smaller.
- FIG. 6 it is possible to clearly expect that the test block does not protrude without causing a sharp edge or the like because the seatback frame is not bent and broken in the baggage collision test.
- the seatback frame according to Comparative Example 1 has a low energy per unit area absorbed, so that the fall impact strength is inferior, and as shown in FIG. 5, cracks are generated in a wider range.
- FIG. 7 it can be clearly predicted that the baggage crash test breaks the seatback frame to generate sharp edges and the test block pops up and the stability is remarkably inferior.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Textile Engineering (AREA)
- Seats For Vehicles (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
낙구 충격 강도 (J/m2) | 수하물 충돌 시험 | |
실시예 1 | 9.58 | 우수 |
비교예 1 | 8.45 | 불량 |
Claims (16)
- 장섬유강화 열가소성 수지(long fiber reinforced thermoplastic, LFT) 복합재를 포함하는 본체 프레임; 및 상기 본체 프레임의 내부에 인서트 사출 성형에 의해 매몰된 연속섬유강화 열가소성 수지(continuous fiber reinforced thermoplastic, CFT) 복합재를 포함하는 내장 프레임;을 포함하는시트백 프레임.
- 제1항에 있어서,상기 내장 프레임은 프레스 성형에 의해 예비 성형되어 소정의 형상을 구현한시트백 프레임.
- 제1항에 있어서,상기 장섬유강화 열가소성 수지 복합재는 열가소성 수지 및 강화용 장섬유를 포함하고, 상기 연속섬유강화 열가소성 수지 복합재는 열가소성 수지 및 강화용 연속섬유를 포함하는시트백 프레임.
- 제3항에 있어서,상기 연속섬유강화 열가소성 수지 복합재는 강화용 연속섬유를 60 중량% 내지 70 중량%로 포함하는시트백 프레임.
- 제3항에 있어서,상기 강화용 연속섬유의 길이는 10cm 초과인시트백 프레임.
- 제3항에 있어서,상기 장섬유강화 열가소성 수지 복합재는 강화용 장섬유를 30 중량% 내지 40 중량%로 포함하는시트백 프레임.
- 제3항에 있어서,상기 강화용 장섬유의 길이는 50mm 내지 100mm인시트백 프레임.
- 제1항에 있어서,상기 연속섬유강화 열가소성 수지 복합재의 인장 강도가 300MPa일 내지 600MPa이고, ASTM D790의 조건에 따른 굽힘 강도가 350MPa 내지 500MPa인시트백 프레임.
- 제1항에 있어서,상기 장섬유강화 열가소성 수지 복합재의 ASTM D638의 조건에 따른 인장 강도가 100MPa일 내지 120MPa이고, ASTM D790의 조건에 따른 굽힘 강도가 100MPa 내지 200MPa인시트백 프레임.
- 제3항에 있어서,상기 장섬유강화 열가소성 수지 복합재 또는 상기 연속섬유강화 열가소성 수지 복합재에 포함된 상기 열가소성 수지는 폴리프로필렌 수지, 폴리에틸렌 수지, 폴리아미드 수지, 폴리에스테르 수지, 폴리페닐렌설파이드 수지 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는시트백 프레임.
- 제3항에 있어서,상기 강화용 장섬유, 상기 강화용 연속섬유 또는 이들 모두는 유리 섬유, 아라미드 섬유, 천연 섬유, 폴리에스테르 섬유, 폴리아미드 섬유 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는시트백 프레임.
- 제1항에 있어서,암레스트 프레임을 더 포함하고,상기 본체 프레임 및 상기 암레스트 프레임이 일체로 성형된시트백 프레임.
- 제1항 내지 제12항 중 어느 한 항에 따른 시트백 프레임을 포함하는 차량용 시트백.
- 연속섬유강화 열가소성 수지(continuous fiber reinforced thermoplastic, CFT) 복합재를 프레스 성형에 의해 예비 성형하여 소정의 형상을 구현한 내장 프레임을 준비하는 단계; 및장섬유강화 열가소성 수지(long fiber reinforced thermoplastic, LFT) 복합재의 내부에 상기 내장 프레임을 인서트하여 사출 성형함으로써 상기 내장 프레임이 매몰된 본체 프레임을 제조하는 단계;를 포함하는 시트백 프레임의 제조방법.
- 제14항에 있어서,상기 프레스 성형은 40℃ 내지 60℃의 온도에서 수행되는시트백 프레임의 제조방법.
- 제15항에 있어서,상기 프레스 성형은 100,000kgf/cm2 내지 300,000kgf/cm2의 압력에서 수행되는시트백 프레임의 제조방법.
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US15/328,848 US10118523B2 (en) | 2014-09-24 | 2015-09-24 | Seat-back frame, method for preparing the same, and seat-back for vehicle |
CN201580039891.4A CN106573562B (zh) | 2014-09-24 | 2015-09-24 | 座椅靠背框架、其制造方法及车辆用座椅靠背 |
JP2017510317A JP6377256B2 (ja) | 2014-09-24 | 2015-09-24 | シートバックフレーム、この製造方法及び車両用シートバック |
EP15844675.7A EP3199402B1 (en) | 2014-09-24 | 2015-09-24 | Seat-back frame |
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EP (1) | EP3199402B1 (ko) |
JP (1) | JP6377256B2 (ko) |
KR (1) | KR101616634B1 (ko) |
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KR102284616B1 (ko) * | 2017-09-22 | 2021-07-30 | (주)엘엑스하우시스 | 자동차 부품용 하이브리드 섬유강화 복합재 |
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US20170210264A1 (en) | 2017-07-27 |
CN106573562B (zh) | 2019-03-15 |
JP2017525612A (ja) | 2017-09-07 |
EP3199402A1 (en) | 2017-08-02 |
KR101616634B1 (ko) | 2016-04-29 |
CN106573562A (zh) | 2017-04-19 |
EP3199402B1 (en) | 2021-09-22 |
US10118523B2 (en) | 2018-11-06 |
JP6377256B2 (ja) | 2018-08-22 |
KR20160036191A (ko) | 2016-04-04 |
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