JP2011121568A - Seat back structure of vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat back structure of a vehicle seat, which is easily installed by attaining strength and weight reduction, using a 3D net member. <P>SOLUTION: This seat back structure forms a seating surface of the 3D net member, and includes a seat back frame 11 of a square shape, a pad part 12 of a square shape having an opening part 19 penetrated through the center installed in this frame, a skin part 13 being a square shape covering the pad part 12 and forming the periphery as a bag body and the 3D net member 15 locked on the seat back frame 11, tensioned in a position of the seating surface and blocking an opening part 21. The skin part 13 is composed of an outside skin part 13e for covering the outside surface of the pad part 12 and a skin part 13f for covering the inside peripheral surface of the opening part 21. Both sides of the 3D net member 15 are sewn by one end of the outside skin part 13e and one end of the inside skin part 13f, and a fastener 31 of a sealing means is arranged in the other end of the outside skin part 13e and the other end of the inside skin part 13f. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seat back structure for a vehicle seat, and more particularly to a seat back structure using a net member for a seating surface portion of a seat back.

  Conventionally, a seat back of a vehicle seat includes a seat back frame which is a framework of the seat back, a spring connected to the seat back frame, a pad material mounted around the seat back frame and a seating surface, and a pad material. It is assembled with a skin material that covers the entire surface of the seatback frame that is mounted. Due to such a seat back structure, the seat back as a whole is thick and heavy.

  Therefore, in order to reduce the weight of the seat back, simplify the structure, and improve the seating feeling, a net seat using a net member that has excellent elasticity and breathability and has the functions of a pad material and a skin material has been developed. (Patent Documents 1 and 2).

  The seat back using the net member disclosed in Patent Document 1 has a bag-like shape in which a pad material is attached to a skeleton part of a rectangular seat back frame projecting left and right to the front side, and further covers the entire seat back frame. Since the net member is mounted and the net member is stretched and the pad material is fixed simultaneously, the structure is excellent in workability.

  The seat back using the net member disclosed in Patent Document 2 covers the left and right seat side surfaces of the net member stretched on the seat back frame in order to improve vibration absorption at the time of sitting by the pad material. The pad material is mounted on the left and right sides of the seat back frame, and the pad material avoids pressing by the net member and has a structure that enables vibration absorption by the seat back frame and the net member.

JP 2003-52482 A JP 2007-89868 A

  The seat backs disclosed in Patent Documents 1 and 2 make use of the characteristics of the net member that is excellent in elasticity and air permeability, and are improved in weight reduction, structure simplification, seating feeling, and the like.

  However, the seat back disclosed in Patent Document 1 is formed by stretching a net member formed in a bag covering the entire seat back frame, so that the pad material is directly crushed by the net member, The cushion function of the pad material is impaired. The seat back disclosed in Patent Document 2 has a structure in which the pad material is not directly crushed by the net member, but has a structure in which the skin material and the net member having a large stitch are sewn. It is accompanied by technical difficulties to ensure sufficient.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a seat back structure for a vehicle seat that takes advantage of the characteristics of a net member rich in air permeability and elasticity, has sufficient strength, and is lightweight and easy to assemble. .

  In order to solve the above problems, a seat back structure for a vehicle seat provided by the present invention is a seat back structure that uses a net member for a seating surface portion of a seat back, and includes a rectangular seat back frame, the seat A square pad part having an opening that is passed through in the front and rear at a central position, and a skin part that covers the pad part with a skin material and has a bag body around the pad. A net member that is locked to the seat back frame and is stretched at the central position that serves as the seating surface and closes the opening, and the skin portion covers an outer surface of the rectangular pad portion. It consists of an outer skin portion to be covered and an inner skin portion that covers the inner peripheral surface of the opening, and is sewn on both sides of the net member at one end portion of the outer skin portion and one end portion of the inner skin portion. The outer table The other end parts and said inner skin portion of the other end, characterized by comprising providing a sealing means for sealing the other end of the other end and the inner skin portion of the outer skin portion.

  In this way, the net member is locked to the seat back frame and stretched at the center position that becomes the seat back seating surface. In addition, the air permeability can be ensured and the weight can be reduced. Since the net member is sewn on both sides by the outer skin portion and the inner skin portion, even a net member having a large stitch can be sewn with sufficient strength. Moreover, since the pad part mounted on the seat back frame is not directly pressed by the net member, the cushioning property is not impaired. Further, since the skin portion is provided with sealing means for sealing the other end of the outer skin portion and the other end of the inner skin portion, the assembling work by covering the pad portion with the skin portion becomes easy.

  Further, when the seat back structure according to the present invention is used for the front seat, the opening is formed as a recess toward the rear seat with the net member as the bottom on the back side of the seat back. The space around the occupant's knees can be expanded.

  In the present specification, the “seat surface of the seat back” refers to a surface portion of the seat back on which the back of the seated person abuts.

  A hook-shaped trim member for locking to the seat back frame and a backing member are sewn to the end of the net member from both sides.

  Since the trim member and the backing member are sewn with the end of the net member sandwiched from both sides, the trim member as a locking member can be attached to the net member with sufficient strength. The provided net member can be stretched on the seat back frame.

  Further, instead of the seat back structure that directly locks the net member to the seat back frame, the side surface of the inner skin portion that is locked to the seat back frame at one end portion and the one end portion of the outer skin portion A seal that sews both sides of the net member and seals the other end of the outer skin portion and the other end of the inner skin portion to the other end portion of the outer skin portion and the other end portion of the inner skin portion. A seat back structure for a vehicle seat characterized in that a stop means is provided.

  In this seat back structure, the trim member and one end of the inner skin portion are sewn together.

  Further, the sealing means can be a fastener mechanism. After the pad portion is covered with the skin portion, the outer skin portion and the inner skin portion are sealed with a fastener mechanism.

  Furthermore, instead of the seat back structure provided with sealing means for sealing the other end of the outer skin portion and the other end of the inner skin portion of the skin portion, the present invention further provides A seat back structure for a vehicle seat that uses a net member for a seating surface portion of the seat back, and has a rectangular seat back frame and a center position that is attached to the seat back frame and penetrates back and forth. A rectangular pad part having an opening, an outer skin part around the square covering the outer side of the pad part with a skin material, and the opening part stretched at the central position serving as the seating surface A net member closing one end of the net member, and one end portion of the outer skin portion being connected to the other end portion of the outer skin portion. The other end of the outer skin is sewn , Characterized by comprising providing a locking means for locking the rear portion of the seat back frame.

  In this way, while sewing one side of the net member at the other end of the skin piece and one end of the outer skin part, one end of which is locked to the seat back frame, at the other end of the outer skin part, A locking means for locking the rear portion of the seat back frame is provided, and the outer skin portion is not the entire pad portion but the outer skin portion that covers only the outer side of the pad portion, so that it is simple and easy to assemble. The seat back structure can be made.

  Further, a back-back board of a plate-like member can be mounted so as to close the seat back rear side of the opening.

  In the seat back structure having the above-described configuration, a trim member locked to the seat back frame and one end of the skin piece can be sewn.

  The seat back frame of these seat back structures includes a bar-like member that extends in the vertical direction and has both ends fixed to the seat back frame, and the trim member can be engaged with the bar-like member.

  The net member is preferably a net member having a three-dimensional structure excellent in elasticity and seating feeling.

  A net member having a three-dimensional structure (abbreviated as “3D net member” as appropriate) has, for example, a thermoplastic resin mesh member on the front and back surfaces and a pile layer formed between the mesh members. Solid knitting with a structure. Compared to conventional urethane pad materials, 3D net members are thinner and lighter, have better breathability, and can also serve as both pad material and skin material, thus reducing the weight of the seat back. it can.

  It is preferable that the pad portion has a structure in which an engagement groove for mounting on the seat back frame is formed.

  According to the present invention, there is provided a seat back structure for a vehicle seat capable of reducing weight and facilitating assembly while maintaining sufficient strength by using a net member excellent in elasticity and air permeability. be able to.

FIG. 1 is a diagram showing a first embodiment of a seat back structure for a vehicle seat according to the present invention. FIG. 1 (a) is a front perspective view of a skin portion of the vehicle seat back, and FIG. FIG. 1C is a rear perspective view of the skin portion of the seat back, FIG. 1C is a perspective view of a pad portion of the seat back, and FIG. 1D is a perspective view of a seat back frame of the seat back. 2A is a cross-sectional view showing the AA cross section of FIG. 1A, FIG. 2B is an enlarged view of a portion B of FIG. 2A, and FIG. 2C is FIG. It is the C section enlarged view of (a). 3A is a cross-sectional view showing a second embodiment of the AA cross section of FIG. 1A, FIG. 3B is an enlarged view of a portion B of FIG. 3A, and FIG. c) is an enlarged view of a portion C in FIG. 4 (a) is a cross-sectional view showing a third embodiment of the AA cross section of FIG. 1 (a), FIG. 4 (b) is an enlarged view of portion B of FIG. 4 (a), and FIG. FIG. 4C is an enlarged view of a portion C in FIG. 4A, and FIG. 4D is a rear perspective view of the skin portion of the seat back according to the third embodiment.

Embodiments of a seat back structure for a vehicle seat according to the present invention will be described below with reference to the accompanying drawings.
(First embodiment)
As shown in FIG. 1, the seat back structure for a vehicle seat according to the present invention has a rectangular seat back frame 11 (FIG. 1D) that protrudes left and right toward the seat side, and is mounted on the seat back frame 11. The rectangular pad portion 12 (FIG. 1C) having the opening 19 penetrating back and forth at the center position and the pad portion 12 mounted on the seat back frame 11 are covered with a skin material. A cover portion 13 having a rectangular shape and surrounding bag body, and a 3D net member 15 that is locked to the seat back frame 11 and is stretched at a central position serving as a seating surface to close the opening 19. Is done.

  As shown in FIG. 1 (d), the seat back frame 11, which is a framework of the seat back 10, is connected to a U-shaped upper frame 11a with both ends facing downward, and ends of the upper frame 11a. The right side frame 11b and the left side frame 11c, which protrude in the left and right front portions, respectively, and the plate-like lower frame 11d connected to the lower portions of the right side frame 11b and the left side frame 11c, respectively.

  The inner side of the seat back frame 11 is a frame opening 14 to which a horizontal rail, a spring or the like is not attached. Since the 3D net member 15 having the function of a cushion member is stretched on the seating surface portion of the skin portion 13 (FIG. 1A), as in the conventional seat back frame, there is a horizontal rail and a spring inside. In addition, it is not necessary to provide a pad material, and weight reduction and simplification can be achieved.

  The upper frame 11a has a pipe structure, and a pair of cylindrical attachment members 17a and 17b for inserting a headrest support member (not shown) are provided on the left and right sides of the upper frame 11a.

  On the left and right sides of the seat back frame 11, a pair of right and left side bar-like members 22a and 22b that are extended in the vertical direction and bent at the upper and lower ends in the horizontal direction are fixed. The upper ends of the right and left bar members 22a and 22b are fixed to the right and left ends of the upper frame 11a, respectively, and the lower ends of the right and left bar members 22a and 22b are the lower ends of the right frame 11b. And the lower end of the left side frame 11c. A 3D net member 15 described below is stretched between the right side bar-like member 22a and the left side bar-like member 22b.

  For the right side bar-like member 22a and the left side bar-like member 22b on which the 3D net member 15 at the seating surface is stretched, a strong metal bar-like member is used, and the upper frame 11a, the right side frame 11b, It is firmly fixed to the left side frame 11c.

  As shown in FIG. 1C, the pad portion 12 is a rectangular frame formed of a cushioning urethane material, and is attached to the seat back frame 4.

  The pad portion 12 includes an upper pad portion 12a serving as an upper horizontal frame, and right and left side pad portions 12b and left side pads, which are left and right side frames having a shape in which the upper pad portion 12a extends from the left and right to the front side of the vehicle seat. A rectangular frame body having a prismatic opening 19 at the center, which is composed of a portion 12c and a lower pad portion 12d which is a lower horizontal frame extending from below the right side pad portion 12b and the left side pad portion 12c. It is formed as.

  The upper pad portion 12a, the right side pad portion 12b, the left side pad portion 12c and the lower pad portion 12d have engagement grooves 27 for engaging the seat back frame 11 on the back side thereof, which will be described later with reference to FIG. It is formed as shown in FIG. The pad portion 12 is attached to the seat back frame 11 such that the seat back frame 11 is inserted into the engagement groove 27.

  As shown in FIG. 1 (a) and FIG. 1 (b), the skin portion 13 extends from the left and right of the upper skin portion 13a and the upper skin portion 13a, and the right skin portion 13b and the left skin portion 13c. Lower skin portion 13d extending from below right skin portion 13b and left skin portion 13c ("upper skin portion 13a, right skin portion 13b, left skin portion 13c and lower skin portion 13d" and "outer skin portion" 13e "), and a continuous belt-like inner skin portion 13f that covers the inner peripheral surface of the prismatic opening 19 of the pad member so that the opening 21 is located at the central portion serving as the seating surface. In addition, the entire pad portion 12 mounted on the seat back frame 11 is covered.

  Sewing so that both sides of the 3D net member 15 are sandwiched between the outer skin portion 13e and the inner skin portion 13f forming the skin portion 13 so as to close the seat side of the opening 21 (the seat back seating side). (Details will be described later with reference to FIGS. 2 to 4).

  As shown in FIG. 1B, an opening 21 is formed on the back side of the 3D net member 15 as a recess surrounded by the 3D net member 15 as a bottom and surrounded by an inner skin portion 13f. Therefore, when the seat back structure for a vehicle seat according to the present invention is applied to the front seat, the opening 21 expands the space around the knee of the occupant of the rear seat.

  A fastener 31 as a sealing means for sealing the joint portion is provided at the end portion of the rear opening portion of the rectangular opening portion 21 where the outer skin portion 13e and the inner skin portion 13f are joined. It is provided on the perimeter. The pad portion 12 attached to the seat back frame 11 is placed inside the skin portion 13, the fastener 31 is engaged, and the outer skin portion 13 e and the inner skin portion 13 f are sealed, so that the pad portion is sealed by the skin portion 13. The entire 12 can be covered.

  Next, the characteristic part of 1st Embodiment of the seat back structure of the vehicle seat of this invention is demonstrated with reference to FIG.

  As shown in FIG. 2A, which is a cross-sectional view taken along the line AA of FIG. 1A, the left side pad portion 12c is engaged with the left side frame 11c by a groove 27a at the back of the engaging groove 27. Thus, the left side frame 11c is mounted. The left side rod-shaped member 22 c is engaged with the groove 27 b in front of the engagement groove 27.

  The left side pad portion 12c attached to the left side frame 11c has the outer surface of the left side pad portion 12c covered with the left side skin portion 13c, and the inner side surface on the opening 19 side of the left side pad portion 12c is the inner skin portion. The entire periphery of the left side pad portion 12c is covered by engaging the fastener 31 and sealing the left side skin portion 13c and the inner skin portion 13f.

  The right side pad portion 12b, the upper pad portion 12a, and the lower pad portion 12d are engaged with the right side frame 11b, the upper frame 11a, and the lower frame 11d, respectively, by engaging grooves (not shown) formed in the same manner as described above. It is installed by doing.

  The right side pad part 12b, the upper pad part 12a and the lower pad part 12d attached to the right side frame 11b, the upper frame 11a and the lower frame 11d are respectively the right side skin part 13b and the upper part, like the left side pad part 12c. The outer skin portion 13a, the lower skin portion 13d, and the inner skin portion 13f are sealed with the fastener 31 to cover the periphery (not shown).

  As shown in FIG. 2A, the left side portion of the 3D net member 15 is sewn so as to be sandwiched from both sides by one end portion of the left side skin portion 13c and one end portion of the inner skin portion 13f (FIG. 2C )), A fastener 31 is attached to the other end portion of the left skin portion 13c and the other end portion of the inner skin portion 13f to join the other end of the left skin portion 13c and the other end of the inner skin portion 13f. When the left side skin portion 13c and the inner skin portion 13f covering the left side pad portion 12c are joined and sealed by the fastener 31, the entire left side pad portion 12c engaged with the left side frame 11c becomes a bag body. It will be covered so that it is wrapped.

  Although not shown in the drawing, the right side skin portion 13b is sewn so that the right side portion of the 3D net member 15 is sandwiched from both sides by one end portion of the right side skin portion 13b and one end portion of the inner skin portion 13f. A fastener 31 for joining the other end of the right side skin portion 13c and the other end of the inner skin portion 13f is attached to the other end portion of the upper skin portion 13f and the other end portion of the inner skin portion 13f. The upper skin is sewn so that the upper end of the 3D net member 15 is sandwiched from both sides with one end of the inner skin 13f, and the upper skin is connected to the other end of the upper skin 13a and the other end of the inner skin 13f. A fastener 31 for joining the other end of the portion 13a and the other end of the inner skin portion 13f is attached, and the lower end portion of the 3D net member 15 is disposed on both sides at one end portion of the lower skin portion 13d and one end portion of the inner skin portion 13f. The lower skin part is sewn so as to be pinched from The other end portion of the other end portion and an inner skin portion 13f of 3b, mounting the fastener 31 joining the other ends of the lower surface skin portion 13d and an inner skin portion 13f.

  By inserting the pad portion 12 attached to the seat back frame 11 into the inside of the skin portion 13 thus configured, the fastener 31 is engaged, and the outer skin portion 13e and the inner skin portion 13f are sealed. The entire pad portion 12 can be covered by the portion 13.

  The skin material forming the skin portion 12 can be made of materials such as natural fiber, synthetic fiber, leather, and synthetic leather. However, when the 3D net member 15 is sewn from both sides, sufficient sewing strength is obtained. It is required that the material has.

  The structure of the 3D net member 15 is a knitted fabric having a three-dimensional structure in which mesh members formed of a thermoplastic resin are arranged as a front surface and a back surface, and a pile layer is provided therebetween. Compared to conventional urethane pad materials, 3D net members are thin, lightweight, and have excellent breathability, and can also serve as both pad material and skin material. Weight reduction can be achieved.

  As shown in FIG. 2A and FIG. 2B, the left end of the 3D net member 15 is sandwiched between the resin trim member 28 and the backing member 29 on both sides of the 3D net member 15. Sewn. Similarly to the above, the right end of the 3D net member 15 is sandwiched between the trim member 28 and the backing member 29 on both sides of the 3D net member. Sewn. When the both sides of the 3D net member are clamped and sewn between the trim member 28 and the backing member 29, the end of the 3D net member is folded once and then sewn and sewn, thereby further sewing. The wearing strength is improved (FIG. 2B).

  The trim member 28 is a member for stretching the 3D net member to the seat back frame 11, and includes a right side bar-like member 22a (not shown) and a left side bar-like member 22b (FIGS. 2A and 2B). )), And has a hook-like structure to be hooked and engaged. The 3D net member can be stretched by attaching at least two trim members 28 to the left and right end portions of the 3D net member 15 above and below the left and right end portions, respectively.

  The backing member 29 is a plate-shaped piece made of resin, and it is sufficient that the sewing strength can be set to a certain level or more, and examples of the material include natural fiber, synthetic fiber, and synthetic resin.

  At least two trim members 28 are sewn together with the backing member 29 at the left and right ends of the 3D net member 15 in advance, and the periphery of the 3D net member 15 to which the trim member 28 is sewn (square shape). Of the upper skin portion 13a, one end portion of the right skin portion 13b, one end portion of the left skin portion 13c and one end portion of the lower skin portion 13d, and the inner skin portion 13f. Sewing so as to be held between one end.

  The other end of the upper skin 13a, the other end of the right skin 13b, the other end of the left skin 13c and the other end of the lower skin 13d, and the other end of the inner skin 13f, Join the other end of the upper skin portion 13a, the other end of the right skin portion 13b, the other end of the left skin portion 13c, the other end of the lower skin portion 13d, and the other end of the outer skin portion 13e on the other end of the inner skin portion 13f. The fastener 31 to be attached may be attached either before or after the 3D net member 15 is sewn, and the one with better workability is selected.

  The pad member 12 attached to the seat back frame 11 is covered with the skin portion 13 to which the 3D net member 15 manufactured in this way is sewn.

  The covering procedure is as follows. The pad member 12 attached to the seat back frame 11 is placed inside the skin portion 13 from between the other end of the outer skin portion 13e and the other end of the inner skin portion 13 before being sealed by the fastener 31. insert.

  Next, in order to stretch the 3D net member 15 to the seat back frame 11, the trim members 28 sewn on the left and right ends of the 3D net member 15 are locked to the right side bar member 22a and the left side bar member 22b. (See FIG. 2B).

  After confirming that the 3D net member 15 is located at the center portion that serves as the seating surface of the seat back (adjusting the position as necessary), the fastener 31 is closed and the other end and the inner side of the outer skin portion 13e are closed. The other end of the skin portion 13 is sealed, and the assembly of the seat back is completed. In order to hide the fastener 31 as necessary, a post-treatment such as applying a fabric to the fastener 31 with an adhesive may be performed.

According to the seat back structure of the present embodiment, the 3D net member, which is a net member rich in breathability and elasticity, is stretched at the position of the seating surface, has sufficient strength, and is lightweight and easy to assemble. It is possible to provide a seat back structure for a vehicle seat that has been improved.
(Second embodiment)
A second embodiment of a seat back structure for a vehicle seat according to the present invention will be described with reference to FIGS. 1 and 3.

  Each perspective view of the seat back frame 11, the pad portion 12, and the skin portion 13 constituting the seat back structure of the second embodiment is a perspective view of each of the seat back frame 11, the pad portion 12 and the skin portion 13 of the first embodiment. The feature of the second embodiment is shown in FIG. 3 which is a cross-sectional view taken along the line AA of FIG.

  Below, it demonstrates centering on the characteristic part of 2nd Embodiment.

  As shown in FIGS. 3 (a) to 3 (c), the characteristic part of the second embodiment is that a trim member 28 for hooking and locking to the left side bar-shaped member 22b is a 3D net in the first embodiment. In contrast to being attached to the end of the member 15, in the present embodiment, the inner skin is one of the left skin 13c and the inner skin 13f that sew and hold the 3D net member 15 from both sides. That is, it is sewn to the end of the portion 13f.

  Similarly to the above, the trim member 28 that is engaged with the right-side bar-like member 22a is also sewn to the end portion of the inner skin portion 13f that is sewn with the 3D net member sandwiched from both sides (not shown).

  As shown in FIGS. 3 (a) and 3 (b), a trim member 28 is sewn to one end portion of the inner skin portion 13f that is folded and overlapped, and the trim member 28 is locked to the left-side bar-shaped member 22b. Has been. Similarly, a trim member 28 sewn on one end portion of the inner skin portion 13f that is folded and overlapped is also locked to the right-side rod-like member 22a that is symmetrical to the left-side rod-like member 22b (not shown). )

  As shown in FIGS. 3A and 3C, the side surface of the inner skin portion 13f with the trim member 28 sewn to the end portion and the one end portion of the left side skin portion 13c are 3D that is a net member. The side surface of the inner skin portion 13f is sewn so as to sandwich both sides of the left end portion of the net member 15, and the trim member 28, which is also in a symmetrical position, is sewn to the end portion. The one end portion is sewn so as to sandwich both sides of the right end portion of the 3D net member 15.

  As in the first embodiment, the 3D net member 15 is sewn so that both sides of the upper end portion of the 3D net member 15 are sandwiched between one end portion of the upper skin portion 13a and one end portion of the inner skin portion 13f. 15 are sewn so as to be sandwiched between one end of the lower skin 13d and one end of the inner skin 13d.

  Further, as in the first embodiment, the other end portion of the upper skin portion 13a, the other end portion of the right skin portion 13b, the other end portion of the left skin portion 13c, the other end portion of the lower skin portion 13d, and the inner skin portion. A fastener 31 as a sealing means is provided at the other end of 13f.

  The feature of this embodiment is that, as described above, the trim member 28 is sewn to the left and right end portions of the inner skin portion 13f, and the 3D net member 15 is sewn and stretched to the side surface of the inner skin portion 13f. With this, the inner skin portion 13f can be stretched so as to withstand the load from the seated person applied to the 3D net member 15 located on the seating surface so that the elasticity of the 3D net member 15 can be sufficiently secured. Materials are used.

  As the inner skin portion 13f, for example, a synthetic fiber, natural fiber, or synthetic resin having excellent strength is used. On the other hand, the outer skin portion 13e composed of the upper skin portion 13a, the right skin portion 13b, the left skin portion 13c, and the lower skin portion 13d is not directly subjected to the load from the seated person to which the 3D net member 15 is applied. A material made of a material used as a portion can be used, and it is not necessary to use a material having particularly excellent strength such as the inner skin portion 13f.

As described above, in the present embodiment, the material of the inner skin portion 13f that is particularly excellent in strength is used to sew and trim the trim members 28 to the left and right end portions of the 3D net member 15 in the first manner. Instead of the embodiment, the trim member 28 is provided at one end of the inner skin 13f.
Is sewn so that both sides of the left and right end portions of the 3D net member 15 are sandwiched between the side surface of the inner skin portion 13f and one end portion of the right skin portion 13b and one end portion of the left skin portion 13c. The net member 15 can be stretched.
(Third embodiment)
A third embodiment of a seat back structure for a vehicle seat according to the present invention will be described with reference to FIGS. 1 (a), 1 (c), 1 (d) and 4. FIG.

  Each front perspective view of the seat back frame 11, the pad portion 12, and the skin portion 13 constituting the seat back is the same perspective view in the first embodiment. FIG. 1 (a), FIG. 1 (c) and FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1A. Further, unlike the first and second embodiments, the engagement groove 27 of the pad portion 12 is not provided with a groove 27a at the rear back, the rear side of the opening 21 is enlarged, and the back of the opening 21 is further increased. Since the back boat is mounted, the rear side perspective view of the skin portion is shown in FIG. 4 (d) instead of FIG. 1 (b).

  Below, it demonstrates centering on the characteristic part of 3rd Embodiment.

  As shown in FIG. 4A, the characteristic part of the third embodiment is different from the first and second embodiments in that the skin part 13 is composed of an outer skin part 13e, and a trim member 28 is provided at one end. A U-shaped engagement that sews both sides of the 3D net member 15 at the other end of the outer skin portion 36 to be sewn and one end of the outer skin portion 13e, and engages the seatback frame 11 at the other end portion of the outer skin portion 13e. A structure in which a stopper 35 is attached, and the outer side of the pad portion 12 is encased by the skin portion 13, and the opening portion 19 (FIG. 1 (c)) side of the pad portion 12 has an exposed seat back structure. It is.

  The skin piece 36 is a frame having a square shape with an opening at the center. The left and right sides of the skin piece 36 have a trim member 28 at one end and a 3D net member 15 at the other end. The left side portion (FIG. 4 (a) and the right side portion are wide-shaped frame bodies are sewn. The skin portion piece 36 has an inner skin portion 13f (FIG. 3 (a)) according to the second embodiment. Similarly to)), since the 3D net member 15 is sewn and stretched, a synthetic fiber, natural fiber, or synthetic resin having excellent strength is used.

  As shown in FIGS. 4A and 4B, one end of the left side portion of the skin piece 36 is folded and sewn to the trim member 28. Since the skin member 36 is stretched while maintaining the elasticity of the 3D net member 15, at least two trim members 28 need to be provided on each of the left side portion and the right side portion of the skin portion piece 36. The trim member 28 is engaged with the left side rod-like member 22b (FIG. 4A) and the right side rod-like member 22a (not shown) engaged with the groove 27b in front of the engagement groove 27, The 3D net member 15 is stretched at the position of the opening 21 via the skin piece 36.

  Both sides of the left end portion of the 3D net member 15 are sewn so as to be sandwiched between the other end portion on the left side portion of the skin portion piece 36 and one end portion of the left portion skin portion 13c (FIGS. 4A and 4C). )) Both sides of the right end portion of the 3D net member 15 are sewn so as to be sandwiched between the other end portion on the right side portion of the skin portion piece 36 and one end portion of the right portion skin portion 13b (not shown). .

  The upper end portion of the 3D net member 15 is sewn so as to be sandwiched between the upper portion of the skin piece 36 and one end portion of the upper skin portion 13a, and the lower end portion of the 3D net member 15 is below the skin piece 36. And is sewn so as to be sandwiched between one end portion of the lower skin portion 13d (not shown).

  As shown in FIG. 4A, a U-shaped locking member 35 for locking the other end of the left side skin portion 13c to the left side frame 11c is provided at the other end portion of the left side skin portion 13c. ing. In this embodiment, unlike the first and second embodiments, the engagement groove 27 has a groove 27a (in the rear back) so that the U-shaped locking member 35 can be hooked and locked on the left side frame 11c. 2 (a) and 3 (a)) are not provided. The engaging groove 27 is formed so that the front end portion of the left side frame 11c that hooks and locks the U-shaped locking member 35 is substantially flush with the side surface of the opening 21 of the engaging groove 27. The character-shaped locking tool 35 can be locked to the tip of the left side frame 11c (FIG. 4 (a)).

  Also in the right side frame 11b, as described above, the front end of the right side frame 11b that hooks and locks the U-shaped locking member 35 is engaged so that it is substantially flush with the side surface of the opening 21 of the engagement groove 27. A groove 27 is formed, whereby the U-shaped locking member 35 can be locked to the tip of the right side frame 11b (not shown).

  A U-shaped locking member 35 is also provided at the other end portion of the right skin portion 13b, the other end portion of the upper skin portion 13a, and the other end portion of the lower skin portion 13d (not shown).

  In this manner, the outer skin portion 13e having the trim member 28 sewn and attached to the skin portion piece 36 and the 3D net member from both sides and the U-shaped locking member 35 provided on the other end portion is used for the seat. The outer side of the pad portion 12 mounted on the back frame 11 is covered, and the trim member 28 is locked to the right side bar-shaped member 22a (not shown) and the left side bar-shaped member (FIGS. 4A and 4B), Furthermore, the seat back structure of this embodiment is formed by latching the U-shaped locking tool 35 to the seat back frame.

  In the seat back structure of this embodiment, since the periphery of the opening 21 is open, the seat back of the opening 21 is used to shield the seat back frame 11 and the trim member 28 from the view of the rear seat occupant. A back-back board 33, which is a plate-like member, can be mounted around the rear side of 10 (FIGS. 4A and 4D).

  According to the present embodiment, the 3D net member, which is a net member rich in air permeability and elasticity, is stretched at the position of the seating surface, and only the outside of the pad portion 12 is covered. It is possible to provide a seat back structure for a vehicle seat that can be easily assembled and further reduced in weight while maintaining.

DESCRIPTION OF SYMBOLS 10 Seat back 11 Seat back frame 11a Upper frame 11b Right side frame 11c Left side frame 11d Lower frame 12 Pad part 12a Upper pad part 12b Right side pad part 12c Left side pad part 12d Lower pad part 13 Skin part 13a Upper skin part 13b Right skin part 13c Left skin part 13d Lower skin part 13e Outer skin part 13f Inner skin part 15 3D net member 19 Opening part (pad part)
21 opening (skin part)
22a Right side bar member 22b Left side bar member 27 (27a, 27b) Engaging groove 28 Trim member 31 Fastener 33 Back board 35 U-shaped locking member 36 Skin piece

Claims (11)

A seat back structure for a vehicle seat that uses a net member for a seating surface portion of the seat back,
A rectangular seat back frame,
A rectangular pad portion that is attached to the seat back frame and has an opening that penetrates back and forth at a central position;
Covering the pad part with a skin material, a skin part having a rectangular shape and a bag body, and
A net member that is locked to the seat back frame and is stretched at the central position to be the seating surface and closes the opening;
With
The outer skin portion includes an outer skin portion covering an outer surface of the rectangular pad portion and an inner skin portion covering an inner peripheral surface of the opening, and one end portion of the outer skin portion and the inner skin portion Sewing both sides of the net member with one end of the outer part, and connecting the other end of the outer skin part and the other end part of the inner skin part to the other end of the outer skin part and the inner skin part. A seat back structure for a vehicle seat, comprising sealing means for sealing the ends.   2. The vehicle seat according to claim 1, wherein a hook-like trim member for locking to the seat back frame and a backing member are sewn to an end portion of the net member from both sides. Seat back structure. A seat back structure for a vehicle seat that uses a net member for a seating surface portion of the seat back,
A rectangular seat back frame,
A rectangular pad portion that is attached to the seat back frame and has an opening that penetrates back and forth at a central position;
Covering the pad part with a skin material, a skin part having a rectangular shape and a bag body, and
A net member that is stretched at the central position to be the seating surface and closes the opening;
With
The skin portion is composed of an outer skin portion that covers an outer surface of the rectangular pad portion, and an inner skin portion that covers an inner peripheral surface of the opening,
One side of the net member is sewn on the side surface of the inner skin portion that is locked to the seat back frame and one end portion of the outer skin portion, and the other end portion of the outer skin portion and the inner skin portion are sewn. A seat back structure for a vehicle seat, wherein a sealing means for sealing the other end of the outer skin portion and the other end of the inner skin portion is provided at the other end portion of the portion.   The hook-shaped trim member for locking to the seat back frame and one end portion of the inner skin portion or one end portion of the outer skin portion are sewn together. Seat back structure for vehicle seats.   The seat back structure for a vehicle seat according to any one of claims 1 to 4, wherein the sealing means is a fastener mechanism. A seat back structure for a vehicle seat that uses a net member for a seating surface portion of the seat back,
A rectangular seat back frame,
A rectangular pad portion that is attached to the seat back frame and has an opening that penetrates back and forth at a central position;
An outer skin portion around a square shape, covering the outside of the pad portion with a skin material;
A net member that is stretched at the central position to be the seating surface and closes the opening;
An outer skin piece whose one end is locked to the seat back frame;
With
The other end portion of the outer skin portion and one end portion of the outer skin portion are sewn on both sides of the net member, and the other end portion of the outer skin portion is engaged with the rear portion of the seat back frame. A seat back structure for a vehicle seat, characterized by comprising means.   The seat back structure for a vehicle seat according to claim 6, wherein a hook-like trim member for locking to the seat back frame and one end of the skin piece are sewn together.   The seat back structure for a vehicle seat according to claim 6 or 7, wherein a back-back board of a plate-like member is attached to the skin portion so as to close a seat back rear side of the opening. .   9. The seat back frame includes a rod-shaped member that extends in the vertical direction and has both ends fixed to the seat back frame, and the trim member is engaged with the rod-shaped member. A vehicle seat back structure according to any one of the preceding claims.   The seat back structure for a vehicle seat according to any one of claims 1 to 9, wherein the net member is a net member having a three-dimensional structure. The seat back structure for a vehicle seat according to any one of claims 1 to 10, wherein the pad portion is formed with an engagement groove for mounting to the seat back frame.

Images