Flexible flat cable device and sliding device for vehicle seat having same

Abstract

The present invention relates to a flexible flat cable device capable of preventing a cable wrinkling phenomenon and a sliding device for a vehicle seat having same. The flexible flat cable device comprises: at least one signal transmission member formed entirely elongate in a longitudinal direction and made of a conductive material to transmit an electrical signal or power; a covering member for protecting one surface or both surfaces of the signal transmission member; and a straightness reinforcing member formed on the signal transmission member or the covering member and capable of improving straightness so as to prevent an unspecified wrinkling phenomenon of the signal transmission member or the covering member in a limited space formed elongate in the longitudinal direction.

Description

Flexible flat cable device and sliding device for vehicle seat having the same

[0001] The present invention relates to a flexible flat cable device and a sliding device for a vehicle seat having the same, and more specifically, to a flexible flat cable device capable of preventing cable creasing and a sliding device for a vehicle seat having the same.

[0002] The present invention relates to Project No. 1415189597 and Project No. P0021941, which were carried out with the support of the Korea Institute for Advancement of Technology and with funds from the Ministry of Trade, Industry and Energy.

[0003] Typically, vehicle seats are installed so they can slide forward or backward along rails installed on the vehicle floor, either electrically or manually, to accommodate varying body types or to maximize interior space. Recently, as users enjoy car camping and other activities in recreational vehicles and multi-purpose vehicles, seats for these vehicles are increasingly equipped with so-called long-slide devices, allowing them to move a longer distance than conventional seats.

[0004] Existing cables or flexible flat cables that can be applied to existing long slide devices to supply power to the seat or apply various signals for communication can cause a creasing phenomenon in which they are bent in an unspecified manner in a limited space such as a lower rail. In addition, when the cable is returned, the extensibility of the remaining parts is not secured, so when the seat is maintained in a forward or backward state for a long time, there are problems in which permanent deformation occurs in part due to conductive materials such as copper, resulting in various operational malfunctions such as pinching between parts, disconnection, increased load, and jointing.

[0005] The present invention aims to solve various problems, including the problems described above, by ensuring the straightness of the remaining portions when the cable is returned and thereby preventing permanent deformation due to the cable creasing phenomenon, and further, to provide a flexible flat cable device and a sliding device for a vehicle seat having the same, which can prevent various malfunctions caused by the cable creasing phenomenon. However, these tasks are exemplary and the scope of the present invention is not limited thereby.

[0006] A flexible flat cable device according to the present invention for solving the above problem may include at least one signal transmission member formed to be elongated in the overall length direction and made of a conductive material to transmit an electric signal or power; a covering member protecting one or both sides of the signal transmission member; and a straightness reinforcing member formed on the signal transmission member or the covering member and capable of improving straightness so as to prevent an unspecified wrinkling phenomenon of the signal transmission member or the covering member within a limited space formed to be elongated in the length direction.

[0007] In addition, according to the present invention, the straight-line reinforcing member may be a C-shaped prosthesis that is formed in a longitudinal direction in a belt shape as a whole and has a cross-section in the width direction that is elastically bent into a C shape in a natural state in which no external force is applied.

[0008] Additionally, according to the present invention, the C-shaped prosthesis may be a thin metal strip or a resin strip.

[0009] In addition, according to the present invention, the straightness reinforcing member may be a C-shaped film material that is formed in a longitudinal direction in a belt shape as a whole and has a cross-section in the width direction that is elastically bent into a C shape in a natural state in which no external force is applied.

[0010] In addition, according to the present invention, the C-type film material may be a carbon material or a polymer material.

[0011] In addition, according to the present invention, the straightness reinforcing member may be a magnetic band that is formed in a longitudinal direction in a band shape as a whole and on which an attractive force is applied by the magnetic force of an external magnetic body formed along a straight path.

[0012] In addition, according to the present invention, the straight-line reinforcing member may include a C-shaped outer skin that is formed in a longitudinal direction in a belt shape as a whole and has a cross-section in the width direction that is elastically bent into a C shape in a natural state in which no external force is applied.

[0013] In addition, according to the present invention, the straight-line reinforcing member may further include an inverted C-shaped inner skin that is fused with the C-shaped outer skin, is formed in a longitudinal direction in a belt shape as a whole, and has a cross-section in the width direction that is elastically bent into an inverted C shape in a natural state in which no external force is applied.

[0014] In addition, according to the present invention, the reverse C-shaped inner skin can be formed with a second width narrower than the first width of the C-shaped outer skin and can be fused with the C-shaped outer skin.

[0015] In addition, according to the present invention, the straightness reinforcing member may include an air tube that is formed long in the overall length direction, is filled with air or gas inside and sealed, and maintains straightness by internal air pressure in a natural state in which no external force is applied.

[0016] In addition, according to the present invention, the signal transmission member may include a first conductor transmitting a first signal; and a second conductor spaced apart from and arranged in parallel with the first conductor, transmitting a second signal.

[0017] In addition, according to the present invention, the covering member may include an outer film protecting the outer surface of the signal transmission member; an inner film protecting the inner surface of the signal transmission member; and a protective film protecting the straightness reinforcing member.

[0018] In addition, according to the present invention, a fixed connector formed at one end of the signal transmission member and installed on a lower rail fixed to a vehicle may be further included; and a movable connector formed at the other end of the signal transmission member and connected to an upper rail or seat-side connector that slides along the lower rail.

[0019] Meanwhile, a sliding device for a vehicle seat according to the present invention for solving the above problem may include: a lower rail fixed to a vehicle; an upper rail installed on the seat and sliding along the lower rail; and a flexible flat cable device installed on the lower rail and connected to the upper rail; wherein the flexible flat cable device may include: at least one signal transmission member formed to be elongated in the overall length direction and made of a conductive material to transmit an electric signal or power; a covering member protecting one or both sides of the signal transmission member; and a straightness reinforcing member formed on the signal transmission member or the covering member and capable of improving straightness so as to prevent unspecified wrinkling of the signal transmission member or the covering member within a limited space formed to be elongated in the length direction.

[0020] According to some embodiments of the present invention, when a cable is returned and bent, the straightness of the remaining portions is secured, thereby preventing permanent deformation due to cable creasing. In addition, various operational defects such as pinching between components, short circuits, increased load, and joints can be prevented. Of course, the scope of the present invention is not limited by these effects.

[0021] FIG. 1 is a perspective view showing an exterior of a flexible flat cable device according to some embodiments of the present invention.

[0022] Fig. 2 is a cross-sectional view showing the II-II cut surface of the flexible flat cable device of Fig. 1.

[0023] Fig. 3 is a cross-sectional view showing the manufacturing process of the flexible flat cable device of Fig. 1.

[0024] FIG. 4 is a cross-sectional view showing a flexible flat cable device according to some other embodiments of the present invention.

[0025] Fig. 5 is a cross-sectional view showing the manufacturing process of the flexible flat cable device of Fig. 4.

[0026] FIG. 6 is a cross-sectional view showing a flexible flat cable device according to some further embodiments of the present invention.

[0027] Fig. 7 is a cross-sectional view showing the manufacturing process of the flexible flat cable device of Fig. 6.

[0028] FIG. 8 is a cross-sectional view showing a flexible flat cable device according to some further embodiments of the present invention.

[0029] Fig. 9 is a cross-sectional view showing the manufacturing process of the flexible flat cable device of Fig. 8.

[0030] FIG. 10 is a cross-sectional view showing a flexible flat cable device according to some further embodiments of the present invention.

[0031] Fig. 11 is a cross-sectional view showing the manufacturing process of the flexible flat cable device of Fig. 10.

[0032] FIG. 12 is a plan view showing a sliding device for a vehicle seat having a flexible flat cable device according to some embodiments of the present invention.

[0033] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings.

[0034] The embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The following embodiments may be modified in various ways, and the scope of the present invention is not limited to the following embodiments. Rather, these embodiments are provided to more faithfully and completely explain the present disclosure and to fully convey the spirit of the present invention to those skilled in the art. In addition, the thickness and size of each layer in the drawings are exaggerated for convenience and clarity of explanation.

[0035] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting of the present invention. As used herein, the singular forms "a," "an," and "the" include plural forms unless the context clearly dictates otherwise. Furthermore, when used herein, the words "comprise" and / or "comprising" specify the presence of stated features, numbers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, elements, components, and / or groups thereof.

[0036] Hereinafter, embodiments of the present invention will be described with reference to drawings schematically illustrating ideal embodiments of the present invention. In the drawings, variations in the shapes depicted may be expected, for example, depending on manufacturing techniques and / or tolerances. Therefore, embodiments of the present invention should not be construed as limited to the specific shapes of the regions depicted herein, but should include, for example, variations in shapes resulting from manufacturing processes.

[0037] Hereinafter, a flexible flat cable device (100 to 500) according to various embodiments of the present invention and a sliding device (1000) for a vehicle seat having the same will be described in detail with reference to the drawings.

[0038] FIG. 1 is a perspective view showing an exterior of a flexible flat cable device (100) according to some embodiments of the present invention, FIG. 2 is a cross-sectional view showing a II-II cross-section of the flexible flat cable device (100) of FIG. 1, and FIG. 3 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (100) of FIG. 1.

[0039] First, as illustrated in FIGS. 1 to 3, a flexible flat cable device (100) according to some embodiments of the present invention may largely include a signal transmission member (10), a covering member (20), and a straightness reinforcing member (30).

[0040] The signal transmission member (10) may be formed to be elongated in the overall length direction, for example, and may be at least one signal transmission medium that transmits an electrical signal or power by being made of a conductive material such as copper, gold, silver, or aluminum.

[0041] The signal transmission member (10) may be, more specifically, made of a plurality of band shapes or wire shapes, and may include a first conductor (11) that transmits a first signal and a second conductor (12) that is spaced apart from the first conductor (11) and arranged in parallel to transmit a second signal.

[0042] However, the signal transmission member (10) is not necessarily limited to the drawing, and a wide variety of wire members of various numbers, shapes, and types that can be applied to a flexible flat cable can all be applied.

[0043] The covering member (20) is a type of protective member that is made of, for example, an insulating material such as various resins or rubber and protects one or both sides of the signal transmission member (10). More specifically, for example, it may include an outer film (21) that protects the outer surface of the signal transmission member (10) and an inner film (22) that protects the inner surface of the signal transmission member (10).

[0044] Here, the outer film (21) may be a carbon material or a polymer material, and the inner film (22) may be a CPP (Cast Polypropylene) material.

[0045] However, the covering member (20) is not necessarily limited to the drawing, and various shapes and types of covering members, such as an outer film (21) and an inner film (22) that form an integral body, can all be applied.

[0046] The straightness reinforcing member (30) may be, for example, a type of elastic reinforcing member that is formed on a signal transmission member (10) or a covering member (20) and can improve straightness so that when the signal transmission member (10) or the covering member (20) is returned and bent in a limited space formed in a longitudinal direction, bending is possible in the bending portion where the return bending is performed, but unspecified wrinkling of the signal transmission member (10) or the covering member (20) is prevented in the remaining portion that is not bent.

[0047] The straight-line reinforcing member (30) may be, more specifically, as shown in FIG. 2, a C-shaped prosthesis (31) that is formed in a longitudinal direction in a belt shape as a whole and has a cross-section in the width direction that is elastically bent into a C shape in a natural state in which no external force is applied.

[0048] Here, the C-shaped prosthesis (31) may be a thin metal strip or resin strip whose cross-section in the width direction is elastically bent into a C shape, and may be formed by heat-treating a metal such as steel, an alloy, or a shape memory alloy having elastic restoring force in the width direction in a C shape, or by molding various resin materials.

[0049] Accordingly, according to this C-shaped prosthesis (31), since it is an elastic body with a C-shaped cross-section in the width direction, it can be easily bent in a return-type bending manner at the bending portion like a tape measure, and at the same time, it can maintain straightness without wrinkling within a space where a straight line can be maintained.

[0050] Therefore, when the cable is returned, the straightness of the remaining parts can be secured, preventing permanent deformation due to cable crimping. In addition, various operational defects such as pinching between parts, short circuiting, increased load, and jointing can be prevented.

[0051] Meanwhile, as illustrated in FIG. 1, a flexible flat cable device (100) according to some embodiments of the present invention may further include a fixed connector (40) formed at one end of a signal transmission member (10) and installed on a lower rail (LR, see FIG. 12) fixed to a vehicle, and a movable connector (50) formed at the other end of the signal transmission member (10) and connected to an upper rail (UR, see FIG. 12) or a seat-side connector that slides along the lower rail (LR).

[0052] Accordingly, in some embodiments of the present invention, the flexible flat cable device (100) has one end fixed to the lower rail (LR) and the other end fixed to the upper pallet (UR) of a seat capable of sliding forward and backward, so that a return-type bending can occur therebetween, and in the remaining portions where the return-type bending does not occur, straightness is maintained, thereby preventing permanent deformation due to cable crimping, and in addition, various operational defects caused by the phenomenon of pinching, short circuiting, load increase, and jointing between components can be prevented.

[0053] FIG. 3 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (100) of FIG. 1. As shown in FIG. 3, the manufacturing process of the flexible flat cable device (100) according to some embodiments of the present invention can be achieved by positioning a signal transmission member (10) and a C-shaped prosthesis (31), which is a straightness reinforcing member (30), between an outer film (21) and an inner film (22) of a covering member (20), and then applying pressure and heat to the outer film (21) and the inner film (22) to bond them together.

[0054] Here, a hot press device or a laminating device that applies pressure and heat to the outer film (21) and the inner film (22) can all be applied, and in addition to the method of applying pressure and heat, a wide variety of types of bonding equipment, such as a method using various adhesive materials, can all be applied.

[0055] FIG. 4 is a cross-sectional view showing a flexible flat cable device (200) according to some other embodiments of the present invention, and FIG. 5 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (200) of FIG. 4.

[0056] As shown in FIGS. 4 and 5, the straightness reinforcing member (30) of the flexible flat cable device (200) according to some other embodiments of the present invention may be a C-shaped film material (32) that is formed in a longitudinal direction in a belt shape as a whole and has a cross-section in the width direction that is elastically bent into a C shape in a natural state in which no external force is applied.

[0057] Here, the C-type film material (32) may be a carbon material or a polymer material.

[0058] However, the C-type film material (32) is not limited to these materials, and a wide variety of film materials can be applied.

[0059] Accordingly, according to this C-shaped film material (32), since it is an elastic body with a C-shaped cross-section in the width direction, it can be easily bent in a return-type bending manner at the bending portion like a tape measure, and at the same time, it can maintain straightness without wrinkling within a space where a straight line can be maintained.

[0060] Therefore, when the cable is returned, the straightness of the remaining parts can be secured, preventing permanent deformation due to cable crimping. In addition, various operational defects such as pinching between parts, short circuiting, increased load, and jointing can be prevented.

[0061] FIG. 5 is a cross-sectional view showing the manufacturing process of the flexible flat cable device (200) of FIG. 4. As shown in FIG. 5, the manufacturing process of the flexible flat cable device (200) according to some other embodiments of the present invention can be achieved by positioning the signal transmission member (10) between the outer film (21) of the covering member (20) and the C-shaped film material (32), and then applying pressure and heat to the outer film (21) and the C-shaped film material (32) to bond them together.

[0062] Here, a hot press device or a laminating device that applies pressure and heat to the outer film (21) and the C-type film material (32) can all be applied, and in addition to the method of applying pressure and heat, a wide variety of types of bonding equipment, such as a method using various adhesive materials, can all be applied.

[0063] FIG. 6 is a cross-sectional view showing a flexible flat cable device (300) according to some further embodiments of the present invention, and FIG. 7 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (300) of FIG. 6.

[0064] As illustrated in FIGS. 6 and 7, the straightness reinforcing member (30) of the flexible flat cable device (300) according to some further embodiments of the present invention may be a magnetic band (33) that is formed in a longitudinally elongated band shape overall and has an attractive force applied by the magnetic force of an external magnetic body (M) formed along a straight path.

[0065] Here, the external magnetic body (M) may be a permanent magnet band formed along the inner wall surface of the vehicle's lower rail (LR, Fig. 12).

[0066] Therefore, when the magnetic band (33) is returned, it can be easily bent and, within a space where it can maintain a straight line, it can maintain straightness without wrinkling by adhering to the inner wall surface by the magnetic force of the external magnetic body (M).

[0067] Therefore, when the cable is returned, the straightness of the remaining parts can be secured, preventing permanent deformation due to cable crimping. In addition, various operational defects such as pinching between parts, short circuiting, increased load, and jointing can be prevented.

[0068] Fig. 7 is a cross-sectional view showing the manufacturing process of the flexible flat cable device (300) of Fig. 6. As shown in Fig. 7, the manufacturing process of the flexible flat cable device (300) according to some other embodiments of the present invention can be achieved by positioning the signal transmission member (10) and the magnetic band (33), which is the straightness reinforcing member (30), between the outer film (21) and the inner film (22) of the covering member (20), and then applying pressure and heat to the outer film (21) and the inner film (22) to bond them together.

[0069] Here, a hot press device or a laminating device that applies pressure and heat to the outer film (21) and the inner film (22) can all be applied, and in addition to the method of applying pressure and heat, a wide variety of types of bonding equipment, such as a method using various adhesive materials, can all be applied.

[0070] FIG. 8 is a cross-sectional view showing a flexible flat cable device (400) according to some further embodiments of the present invention, and FIG. 9 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (400) of FIG. 8.

[0071] As illustrated in FIGS. 8 and 9, the straightness reinforcing member (30) of the flexible flat cable device (400) according to some further embodiments of the present invention may include a C-shaped outer sheath (34) formed in a longitudinally elongated overall belt shape and having a cross-section in the width direction that is elastically bent into a C shape in a natural state when no external force is applied, and an inverted C-shaped inner sheath (35) fused to the C-shaped outer sheath (34) and formed in a longitudinally elongated overall belt shape and having a cross-section in the width direction that is elastically bent into an inverted C shape in a natural state when no external force is applied.

[0072] Here, as shown in FIG. 9, the reverse C-shaped inner skin (35) is formed with a second width (W2) narrower than the first width (W1) of the C-shaped outer skin (34) and is fused with the C-shaped outer skin (34) to further reinforce the elastic restoring force due to the difference in length.

[0073] FIG. 9 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (400) of FIG. 8. As shown in FIG. 9, the manufacturing process of the flexible flat cable device (400) according to some other embodiments of the present invention may be performed by positioning the outer film (21) and the inner film (22) of the covering member (20) between the C-shaped outer sheath (34) and the inverted C-shaped inner sheath (35), positioning the signal transmission member (10) between the outer film (21) and the inner film (22), and then applying pressure and heat to the C-shaped outer sheath (34) and the inverted C-shaped inner sheath (35) to bond them together.

[0074] Here, a hot press device or a laminating device that applies pressure and heat to the C-type outer skin (34) and the reverse C-type inner skin (35) can all be applied, and in addition to the method of applying pressure and heat, a wide variety of types of fusion equipment, such as a method using various adhesive materials, can all be applied.

[0075] Accordingly, according to this C-shaped outer skin (34) and reverse C-shaped inner skin (35), since it is an elastic body with a C-shaped cross-section in the width direction, it can be easily bent in a return-type bending manner at the bending portion like a tape measure, and at the same time, it can maintain straightness without wrinkling within a space where a straight line can be maintained.

[0076] Therefore, when the cable is returned, the straightness of the remaining parts can be secured, preventing permanent deformation due to cable crimping. In addition, various operational defects such as pinching between parts, short circuiting, increased load, and jointing can be prevented.

[0077] FIG. 10 is a cross-sectional view showing a flexible flat cable device (500) according to some further embodiments of the present invention, and FIG. 11 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (500) of FIG. 10.

[0078] As illustrated in FIGS. 10 and 11, the straightness reinforcing member (30) of the flexible flat cable device (500) according to some further embodiments of the present invention may include an air tube (36) that is formed to be long in the overall length direction, is sealed by filling the inside with air (A) or gas, and maintains straightness by the air pressure inside in a natural state in which no external force is applied.

[0079] Here, the covering member (20) may include an outer film (21) that protects the outer surface of the signal transmission member (10), an inner film (22) that protects the inner surface of the signal transmission member (10), and a protective film (23) that protects the air tube (36), which is a straightness reinforcing member (30).

[0080] FIG. 11 is a cross-sectional view showing a manufacturing process of the flexible flat cable device (500) of FIG. 10. As shown in FIG. 11, the manufacturing process of the flexible flat cable device (500) according to some other embodiments of the present invention may be performed by positioning a signal transmission member (10) between an outer film (21) and an inner film (22), then positioning an air tube (36), which is a straightness reinforcing member (30), between the inner film (22) and the protective film (23), and then applying pressure and heat to the outer film (21) and the protective film (23) to bond them together.

[0081] Here, a hot press device or a laminating device that applies pressure and heat to the outer film (21) and the protective film (23) can all be applied, and in addition to the method of applying pressure and heat, a wide variety of types of bonding equipment, such as a method using various adhesive materials, can all be applied.

[0082] Accordingly, according to this air tube (36), by utilizing the elastic restoring force due to air pressure, the bending portion can be easily bent during return bending, and at the same time, straightness can be maintained without wrinkling within a space where a straight line can be maintained.

[0083] Therefore, when the cable is returned, the straightness of the remaining parts can be secured, preventing permanent deformation due to cable crimping. In addition, various operational defects such as pinching between parts, short circuiting, increased load, and jointing can be prevented.

[0084] FIG. 12 is a plan view showing a sliding device (1000) for a vehicle seat having a flexible flat cable device (100-500) according to various embodiments of the present invention.

[0085] As illustrated in FIGS. 1 to 12, a sliding device (1000) for a vehicle seat according to some embodiments of the present invention may include a lower rail (LR) fixed to a vehicle, an upper rail (UR) installed on a seat and sliding along the lower rail (LR), and the above-described flexible flat cable device (100 to 500) installed on the lower rail (LR) and connected to the upper rail (UR) or a seat-side connector.

[0086] Here, the flexible flat cable device (100 to 500) can be applied to all of the flexible flat cable devices (100 to 500) according to various embodiments of the present invention illustrated in FIGS. 1 to 11, and for example, can include at least one signal transmission member (10) that is formed to be long in the overall length direction and is made of a conductive material to transmit an electrical signal or power, a covering member (20) that protects one side or both sides of the signal transmission member (10), and a straightness reinforcing member (30) that is formed on the signal transmission member (10) or the covering member (20) and can improve straightness so as to prevent an unspecified wrinkling phenomenon of the signal transmission member (10) or the covering member (20) in the remaining portion that is not bent when the signal transmission member (10) or the covering member (20) is returned in a limited space formed to be long in the length direction.

[0087] Here, the configuration and role of the flexible flat cable device (100 to 500) described above may be the same as those of the flexible flat cable device illustrated in FIGS. 1 to 11, and thus a detailed description thereof will be omitted.

[0088] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. At least one signal transmission member formed lengthwise in the overall length and made of a conductive material to transmit an electrical signal or power; A covering member protecting one or both sides of the signal transmission member; and A straightness reinforcing member formed on the signal transmission member or the covering member and capable of improving straightness so as to prevent unspecified wrinkling of the signal transmission member or the covering member within a limited space formed in a longitudinal direction; A flexible flat cable device comprising:

2. In paragraph 1, The above straightness reinforcing member is, A flexible flat cable device, which is a C-shaped prosthesis that is formed in a longitudinal direction in the shape of a belt and has a cross-section in the width direction that is elastically bent into a C shape in a natural state when no external force is applied.

3. In paragraph 2, The above C-shaped prosthesis is a flexible flat cable device, which is a thin metal strip or resin strip.

4. In paragraph 1, The above straightness reinforcing member is, A flexible flat cable device, which is a C-shaped film material that is formed in a longitudinal direction in a belt shape overall and has a cross-section in the width direction that is elastically bent into a C shape in a natural state when no external force is applied.

5. In paragraph 4, The above C-type film material is a flexible flat cable device made of carbon material or polymer material.

6. In paragraph 1, The above straightness reinforcing member is, A flexible flat cable device, which is a magnetic band that is formed in a long, belt-like shape and is pulled by the magnetic force of an external magnetic body formed along a straight path.

7. In paragraph 1, The above straightness reinforcing member is, A C-shaped outer skin that is formed in a long, belt-like shape overall and has a C-shaped elastic cross-section in the width direction in a natural state when no external force is applied; A flexible flat cable device comprising:

8. In paragraph 7, The above straightness reinforcing member is, An inverted C-shaped inner skin that is fused with the above-mentioned C-shaped outer skin, is formed in a long, belt-like shape in the overall length direction, and is elastically bent in an inverted C-shaped cross-section in the width direction in a natural state in which no external force is applied; A flexible flat cable device further comprising:

9. In paragraph 8, A flexible flat cable device in which the above-mentioned C-shaped inner sheath is formed with a second width narrower than the first width of the C-shaped outer sheath and is fused with the C-shaped outer sheath.

10. In paragraph 1, The above straightness reinforcing member is, An air tube that is formed lengthwise as a whole, is filled with air or gas inside and sealed, and maintains straightness by the air pressure inside in a natural state in which no external force is applied; A flexible flat cable device comprising:

11. In paragraph 1, The absence of the above signal transmission, a first conductor transmitting a first signal; and A second conductor arranged parallel to and spaced apart from the first conductor and transmitting a second signal; A flexible flat cable device comprising:

12. In paragraph 1, The above covering member is, An outer film protecting the outer surface of the signal transmission member; an endothelial film protecting the inner surface of the signal transmission member; and A protective film protecting the above straight reinforcing member; A flexible flat cable device comprising:

13. In paragraph 1, A fixed connector formed at one end of the signal transmission member and installed on a lower rail fixed to a vehicle; and A movable connector formed at the other end of the signal transmission member and connected to an upper rail or seat-side connector that slides along the lower rail; A flexible flat cable device further comprising:

14. Lower rail fixed to the vehicle; An upper rail installed on the seat and sliding along the lower rail; and A flexible flat cable device installed on the lower rail and connected to the upper rail; The above flexible flat cable device, At least one signal transmission member formed lengthwise in the overall length and made of a conductive material to transmit an electrical signal or power; A covering member protecting one or both sides of the signal transmission member; and A straightness reinforcing member formed on the signal transmission member or the covering member and capable of improving straightness so as to prevent unspecified wrinkling of the signal transmission member or the covering member within a limited space formed in a longitudinal direction; A sliding device for a vehicle seat, including:

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