KR102291902B1 - Seat back frame for automobile with steel insert structure - Google Patents

Abstract

The present invention relates to a seatback frame for a vehicle. The seatback frame includes a frame body, a channel protruding from one surface of the frame body, and a steel frame inserted and disposed inside the channel, wherein the channel covers the outer and inner surfaces of the steel frame. is formed

Description

Seatback frame for automobile with steel insert structure

The present invention relates to a seatback frame for automobiles, and more particularly, to a seatback frame for automobiles capable of reducing weight and improving emotional quality through a steel insert structure.

In general, the seat back of a vehicle is a means of providing a comfortable and comfortable riding environment by supporting the back of the occupant by being connected to the seat cushion that supports the occupant's buttocks.

These 　 seatbacks are usually formed of a plastic material, and ribs or channels may be formed on the seatback frame to maintain strength.

The strength of the seatback can be further reinforced by using a steel-type reinforcing bracket or plate-shaped reinforcing material.

Here, the stiffness (stiffness) of the seatback frame is a different concept from the strength (strength), whereas the strength means the strength of an object, that is, the deformation resistance until the material is destroyed when a load is applied to the material, whereas the stiffness ( Stiffness) refers to the hardness or rigidity of the material, and in the case of the seatback frame, it is a concept that includes rigidity and emotional quality.

For example, when a passenger is seated, when the seat is folded down, or when the armrest is pressed, a gurgling occurs when the rigidity of the seat back and frame is insufficient. It is difficult to quantify the criterion, but it is necessary to minimize it.

For example, if the rigidity increases while securing sufficient strength, the deformation energy according to the impact decreases and the shock absorption power decreases, making it difficult to secure the emotional quality. If the value is increased, the rigidity decreases and it is difficult to meet the standard, and since these two properties conflict with each other, it is very difficult to find an alternative that can satisfy both of them.

In other words, if the rigidity is increased, a problem arises in the legal performance of absorbing energy through deformation.

In order to solve this problem, conventionally, a method of using a seatback frame having a double plate structure or using a plurality of reinforcing brackets has been used. As this increased, there was a problem in that fuel efficiency deteriorated.

The present invention is to provide a seatback frame for automobiles that can minimize the production process of products and increase design freedom through a steel insert injection method, improve fuel efficiency of automobiles through weight reduction, and improve emotional quality against torsion, etc. The purpose.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In order to solve this problem, the seatback frame of the present invention includes a frame body, a channel protruding on one surface of the frame body, and a steel frame inserted and disposed inside the channel, the channel comprising: It is formed to cover the outer and inner surfaces of the steel frame.

In addition, the frame body and the channel may be integrally formed through an injection molding method, and the steel frame may be inserted into an injection-molded product constituting the channel.

In addition, the inside of the steel frame may be completely filled by the injection-molded product.

In addition, the channel may include a hollow portion disposed therein.

In addition, the steel frame may include at least one through hole formed on one surface, and the channel may connect the inner surface and the outer surface of the steel frame through the at least one through hole.

The steel frame may include an opening exposing an inner surface of the steel frame to the outside, and the frame body may be integrally formed with the channel to cover the opening of the steel frame.

In addition, the frame body may include one surface on which the channel is formed and the other surface opposite to the one surface, and the other surface of the frame body may be disposed on the same plane to form a uniform surface.

The frame cover may further include a frame cover including one surface in contact with the frame body and the other surface opposite to the one surface disposed on the same plane and having a uniform surface.

In addition, the steel frame may include an open cross-section including at least one through-hole, or a closed cross-section including no through-hole.

In addition, the steel frame may be made of a metal material having a higher rigidity than the frame body and the channel.

In addition, the steel frame and the channel may be formed along an outer circumferential surface of the frame body.

Specific details of other embodiments are included in the detailed description and drawings.

As the seatback frame for automobiles of the present invention uses a steel insert injection method, a number of bolting and welding processes that have been conventionally performed and a process required for manufacturing a number of brackets for a functional correlation coupling structure can be omitted, so the product production process can be minimized and production costs can be reduced.

In addition, the seatback frame for a vehicle of the present invention has the same rigidity as compared to a conventional product made of steel, and at the same time can improve the fuel efficiency of the vehicle through weight reduction, can increase satisfaction.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 and 2 are views for explaining a seatback frame for a vehicle according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a cross section A - A of FIG. 1 .
4 is a view for explaining some examples of a seatback frame for a vehicle according to an embodiment of the present invention.
5 is a view for explaining a seatback frame for a vehicle according to another embodiment of the present invention.
6 is a view for explaining a seatback frame for a vehicle according to another embodiment of the present invention.
7 is a cross-sectional view illustrating a cross-section C - C of FIG. 6 .

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed subject matter may be thorough and complete, and that the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, a seatback frame for a vehicle according to some embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7 .

1 and 2 are views for explaining a seatback frame for a vehicle according to an embodiment of the present invention. FIG. 3 is a cross-sectional view showing a cross section A - A of FIG. 1 .

1 to 3 , the seat back frame according to an embodiment of the present invention includes a steel frame 100 , a frame body 200 , and a channel 210 .

The steel frame 100 is made of a metal material and has high rigidity, and has an empty shape. The steel frame 100 may be formed in a structure that receives a relatively large force by improving the overall rigidity of the seatback frame.

For example, the steel frame 100 has an open cross-section with one side open (eg, 'C'-shaped cross-section), an open cross-section with at least one through-hole disposed on one surface, or a closed cross-section with a closed inner surface. (For example, it may have a 'ㅁ'-shaped cross-section).

The steel frame 100 may be integrally formed in the same process. Through this, the steel frame 100 can secure high rigidity.

The frame body 200 may have a basic single plate structure. The frame body 200 may be manufactured by an injection molding method, and may be composed of various composite injection materials. A channel 210 protruding outwardly may be formed on one surface of the frame body 200 . In this case, the frame body 200 and the channel 210 may be integrally formed within the same injection molding process.

The channel 210 may be formed to protrude outwardly on one surface of the frame body 200 . The channel 210 may be formed through a steel insert process to include the steel frame 100 therein. That is, the channel 210 may be formed by insert injection molding so as to surround the inner and outer surfaces of the steel frame 100 using the pre-manufactured steel frame 100 as a skeleton.

In the insert injection molding process, the composite injection material constituting the channel 210 is introduced into the steel frame 100 through an opening or a through hole formed in the steel frame 100 . As a result, the channel 210 of the steel frame 100 may be formed to cover both the inner surface and the outer surface of the steel frame 100 , and may be formed to connect the inner surface and the outer surface of the steel frame 100 . In addition, the channel 210 may include a hollow formed therein during the insert injection molding process. However, this is only an example, and the present invention is not limited thereto.

Accordingly, the channel 210 may be formed to protrude from one surface of the frame body 200 in a shape similar to that of the steel frame 100 , and may include the steel frame 100 therein.

<A1> of FIGS. 1 and 2 shows one surface and the other surface of the steel frame 100 . In the drawings, the steel frame 100 is formed to have a 'C'-shaped cross section, but this is only an example, and the present invention is not limited thereto.

<A2> of FIGS. 1 and 2 shows a channel 210 formed to cover the inner and outer surfaces of the steel frame 100 through an insert injection forming process, and one surface of the frame body 200 integrally formed with the channel 210 and indicates the other side.

The channel 210 may be formed to protrude from the frame body 200 in the shape of the steel frame 100 to surround the outer and inner surfaces of the steel frame 100 .

Additionally, ribs 220 (RIB) formed as shown in <A2> of FIG. 1 may be further formed on the frame body 200 to reinforce the rigidity of the frame body 200, but this is only an example. , may be omitted in other embodiments. Similarly, the support structure 230 may be formed inside the channel 210 as shown in <A2> of FIG. 2, but may be omitted or modified in other embodiments. A detailed description thereof will be described later with reference to FIG. 4 .

The frame cover 250 is an injection product formed in an injection process different from that of the frame body 200 . The frame cover 250 may be coupled to contact the outer surface of the frame body 200 , and may be formed to be fused with the frame body 200 . The frame cover 250 includes one surface in contact with the frame body 200 and the other surface facing the one surface and exposed to the outside. The other surface of the frame cover 250 may be disposed on the same plane (S2 of FIG. 3 ) to form a uniform surface. Through this, the seatback frame can form a flat rear structure, and the appearance quality can be improved by preventing the non-woven fabric from being further formed in a subsequent process from being pressed.

However, this is only one example, and the present invention is not limited thereto, and the frame cover 250 may be omitted. In this case, the frame body 200 includes one surface on which the channel 210 is formed and the other surface opposite to the one surface, and the other surface of the frame body 200 is coplanar to form a uniform surface (S1 in FIG. 3 ). may be placed on the

Additionally, the seatback frame may form the frame body 200 and the channel 210 using a single thermoplastic fiber composite material. In addition, the seatback frame may form the frame body 200 and the channel 210 by using two or more types of thermoplastic fiber composite materials.

More specifically, the injection material constituting the frame body 200 and the channel 210 is intended to provide rigidity and strength to the base body, and may include Long Fiber Reinforced Thermoplastic (LFT) or Short Fiber Reinforced Thermoplastic. It may be made of a composite material including a resin (SFT: Short Fiber Reinforced Thermoplastic).

And the thermoplastic resin included in the long fiber reinforced thermoplastic resin (LFT) may include at least one selected from the group consisting of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, polyphenylene sulfide resin, and combinations thereof. have.

In addition, the injection material may be made of a reinforced thermoplastic (GMT: Glass Mat Reingorced Thermoplastics).

Through this, the frame body 200 and the channel 210 of the present invention can be integrally formed in one injection process, and the steel frame 100 inserted into the channel 210 provides strong rigidity to the seatback frame. It is possible to improve the emotional quality such as gurgling or twisting.

In addition, the seatback frame of the present invention can minimize the product production process and reduce the weight of the product by integrating the parts through the injection process. Through this, fuel efficiency can be improved by reducing the weight of the vehicle on which the seatback frame is mounted.

In addition, the seatback frame of the present invention has a flat rear structure, thereby preventing the rear nonwoven from being pressed according to the rib structure of the conventional composite frame, thereby improving the appearance.

4 is a view for explaining some examples of a seatback frame for a vehicle according to an embodiment of the present invention. Hereinafter, content overlapping with the above-described embodiment will be omitted, and differences will be mainly described.

Referring to <B1> of FIG. 4 , in an example of the seatback frame for a vehicle of the present invention, the steel frame 100 has an open cross-section with one side open to expose the inner surface to the outside. For example, the steel frame 100 may have a 'C'-shaped cross section.

In this case, the channel 210 may be injection-molded to cover the inner and outer surfaces of the steel frame 100 . The channel 210 does not completely fill the inner surface of the steel frame 100 . In this case, in order to supplement the rigidity of the channel 210 , a support structure 230 may be formed inside the channel 210 . For example, the support structure 230 may be formed to connect two surfaces of the channel 210 . A plurality of support structures 230 may be formed in the channel 210 . However, this is only an example, and the present invention is not limited thereto.

Referring to <B2> of FIG. 4 , in another example of the seatback frame for a vehicle of the present invention, the steel frame 100 has an open cross-section with one side open to expose the inner surface to the outside. For example, the steel frame 100 may have a 'C'-shaped cross section.

The channel 210 may be injection-molded to cover the inner and outer surfaces of the steel frame 100 . In this case, the channel 210 does not completely fill the inner surface of the steel frame 100 , and a hollow portion 240 may be formed therein. The hollow part 240 may be formed using a gas injection process for injecting gas, but the present invention is not limited thereto. Since the gas injection process is a known technique known to those skilled in the art, a detailed description thereof will be omitted herein.

The hollow part 240 is positioned between the channel 210 and the frame body 200 , and may be defined by the channel 210 and the frame body 200 .

Referring to <B3> of FIG. 4 , in another example of the seatback frame for a vehicle according to the present invention, the steel frame 100 has a closed cross-section in which the inner surface is not exposed to the outside. For example, the steel frame 100 may have a 'ㅁ'-shaped cross section.

Even in this case, the channel 210 may be injection-molded to cover the inner and outer surfaces of the steel frame 100 . Similarly, the channel 210 does not completely fill the inner surface of the steel frame 100 , and a hollow portion 240 may be formed therein. The hollow part 240 may be formed using a gas injection process for injecting gas. However, this is only one example, and the present invention is not limited thereto, and the inside of the channel 210 may be completely filled so that the hollow part 240 may not be formed.

5 is a view for explaining a seatback frame for a vehicle according to another embodiment of the present invention. Hereinafter, content overlapping with the above-described embodiment will be omitted, and differences will be mainly described.

Referring to FIG. 5 , a seatback frame for a vehicle according to another embodiment of the present invention includes a steel frame 101 (<C1> in FIG. 5 ) and a channel ( 211) and a frame body 201 (<C2> in FIG. 5) integrally formed with the channel 211 may be included.

In this case, the steel frame 101 may have a U-shaped cross-section in which one surface is open and the inner surface is exposed to the outside, and at least one opening 111 may be included in one surface.

The opening 111 may allow the injection material forming the channel 211 to easily cover the inner and outer surfaces of the steel frame 101 during the insert injection process. That is, as the plurality of openings 111 are formed, the injection-molded product may be formed to uniformly cover the inner surface of the steel frame 101 .

In addition, the steel frame 101 may be formed in various shapes according to the needs of the user. That is, in order to secure emotional quality that can maximize user satisfaction, the steel frame 101 may be formed in various shapes. For example, the steel frame 101 may be formed to contact only a portion of the outer peripheral surface of the frame body 201 . However, this is only an example, and the present invention is not limited thereto.

6 is a view for explaining a seatback frame for a vehicle according to another embodiment of the present invention. 7 is a cross-sectional view illustrating a cross-section C - C of FIG. 6 . Hereinafter, content overlapping with the above-described embodiment will be omitted, and differences will be mainly described.

6 and 7, the seatback frame for a vehicle according to another embodiment of the present invention is a steel frame 102 (<D1> in FIG. 6) and to cover the inner and outer surfaces of the steel frame 102 It may include a channel 212 formed therein and a frame body 202 (<D2> in FIG. 6 ) integrally formed with the channel 212 .

In this case, the steel frame 102 may include at least one opening 112 on one surface and the other surface. Similarly, the opening 112 may allow the injection molding forming the channel 212 to easily cover the inner and outer surfaces of the steel frame 102 during the insert injection process. That is, as the plurality of openings 112 are formed, the injection-molded product may be formed to uniformly and easily cover the inner surface of the steel frame 102 .

In addition, the steel frame 102 may be formed in various shapes according to the needs of the user. For example, the steel frame 102 may be formed along the outer circumferential surface to surround the outer circumferential surface of the frame body 202 .

Referring to <E1> of FIG. 7 , in an example of a seatback frame for a vehicle according to another embodiment of the present invention, the steel frame 102 has an open cross-section in which the upper surface or the lower surface is opened to expose the inner surface to the outside. . In this case, the steel frame 100 may have openings 112 and 114 on both the upper and lower surfaces.

The channel 212 may be injection-molded to cover the inner and outer surfaces of the steel frame 102 . Similarly, the channel 212 does not completely fill the inner surface of the steel frame 100 , and a hollow part 242 may be formed therein. The hollow part 242 may be formed using a gas injection process for injecting gas. However, this is only one example, and the present invention is not limited thereto, and as shown in <E2> of FIG. 7 , the inside of the channel 212 may be completely filled so that the hollow part 242 may not be formed.

In this case, the frame body 202 integrally formed with the channel 212 includes one surface on which the channel 212 is formed, and the other surface opposite to the one surface and exposed to the outside. The other surface of the frame body 202 may be disposed on the same plane (S3 in FIG. 7) to form a uniform surface. Through this, the seatback frame can form a flat rear structure, and the appearance quality can be improved by preventing the non-woven fabric from being further formed in a subsequent process from being pressed.

Through this, the seatback frame of the present invention has a flat rear structure, thereby preventing the rear nonwoven fabric from being pressed according to the rib structure of the conventional composite frame, thereby improving the appearance.

In addition, the seatback frame of the present invention can minimize the product production process and reduce the weight of the product by integrating the parts through the injection process. Through this, fuel efficiency can be improved by reducing the weight of the vehicle on which the seatback frame is mounted.

In addition, the steel frame inserted into the channel of the seatback frame provides strong rigidity to the seatback frame and improves emotional quality such as gurgling or torsion, thereby providing high satisfaction to users riding in the car.

In the above, a preferred embodiment of the present invention has been described with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains may express the present invention in other specific forms without changing the technical spirit or essential features. It will be appreciated that this may be practiced. Therefore, it should be understood that the embodiment described above is illustrative in all respects and not restrictive.

100, 101, 102: steel frame
200, 201, 202: frame body
210, 211, 212: Channel

Claims (11)

frame body;
a channel protruding from one surface of the frame body; and
Including a steel frame disposed inside the channel,
The steel frame includes an opening exposing an inner surface of the steel frame to the outside;
The frame body is formed integrally with the channel to cover the opening of the steel frame,
The channel is formed to cover the outer and inner surfaces of the steel frame,
The frame body and the channel are integrally formed through an injection molding method,
The steel frame is inserted into the injection-molded material constituting the channel,
The steel frame is made of a metal material having a higher rigidity than the frame body and the channel,
The steel frame and the channel are formed along an outer circumferential surface of the frame body,
The channel includes a hollow part positioned therein, and the hollow part is formed by a gas injection process.
seatback frame.
delete delete delete The method of claim 1,
The steel frame includes at least one through hole formed on one surface,
The channel is configured to connect the inner surface and the outer surface of the steel frame through the at least one through hole.
seatback frame.
delete The method of claim 1,
The frame body includes one surface on which the channel is formed, and the other surface opposite to the one surface,
The other surface of the frame body includes a uniform surface disposed on the same plane
seatback frame.
The method of claim 1,
Further comprising a frame cover including one surface in contact with the frame body and the other surface opposite to the one surface disposed on the same plane and having a uniform surface
seatback frame.
delete delete delete

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