Trim covers and vehicle seats

Abstract

In a configuration where a cover body is placed over a sheet pad having a concave curved surface, the appearance quality is improved. [Solution] The trim cover 30 comprises a cover body 32 that is placed over a seat pad 22 having a concave curved surface 22A and a pull groove 26A that opens in the concave curved surface 22A, and an insert wire 42 embedded in the bottom of the pull groove 26A, and a suspender 34 that is attached to the cover body 32 and positioned in the pull groove 26A, and is secured to the insert wire 42 using a plurality of hog rings 44 that are spaced apart in the extending direction of the pull groove 26A, and a notch 40 is formed in the part between adjacent hog rings 44 that is cut out from the insert wire 42 side, and the depth of the notch 40 becomes deeper as it moves towards the center between adjacent hog rings 44.

Description

【Technical Field】 【0001】 The present invention relates to a vehicle seat, and more particularly to a trim cover. 【Background Art】 【0002】 In the vehicle seat disclosed in Patent Document 1 below, a pulling portion extending in the seat width direction is provided at the upper part of the trim cover of the seat back. In this pulling portion, a suspender attached to the trim cover is locked to the insert wire of the pad of the seat back using a plurality of hog rings (locking tools). A notch is formed in a portion between the plurality of hog rings in the suspender. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2016-144998 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 When the seat pad has a concave curved surface, the trim cover is made to follow the concave curved surface by locking the suspender of the trim cover to the insert wire embedded in the bottom of the pulling groove that opens on the concave curved surface using a plurality of hog rings. In the suspender used in such a case, a notch is set in a portion between adjacent hog rings in order to follow the pulling groove of the seat pad. Since no pulling tension is applied to the portion where the notch is set in this suspender, wrinkles and unevenness occur on the surface of the trim cover. Therefore, there is room for improvement from the viewpoint of improving the appearance quality. 【0005】 An object of the present invention is to obtain a trim cover and a vehicle seat that can improve the appearance quality in a configuration where a cover body is placed on a seat pad having a concave curved surface. [Means for solving the problem] 【0006】 The trim cover of the first embodiment includes a cover body that is placed over a seat pad having a concave curved surface and a pull groove that opens on the concave curved surface, and an embedded member embedded in the bottom of the pull groove; and a suspender that is attached to the cover body, positioned in the pull groove, and locked to the embedded member using a plurality of locking devices that are spaced apart in the extending direction of the pull groove, and has notches formed in the portions between adjacent locking devices, cut out from the embedded member side, with the depth of the notches increasing towards the center between the adjacent locking devices. 【0007】 In the first embodiment of the trim cover, the cover body is placed over a sheet pad having a concave curved surface. The sheet pad has a pull groove that opens at the concave curved surface, and an embedded member is embedded at the bottom of the pull groove. The suspenders attached to the cover body are positioned in the pull groove and are locked to the embedded member using a plurality of fasteners that are spaced apart in the direction of extension of the pull groove. In these suspenders, notches are formed in the portions between adjacent fasteners, cut out from the embedded member side. The depth of these notches increases towards the center between adjacent fasteners. This allows tension toward the embedded member to be generated even in the portions of the suspenders where the notches are set. As a result, it is possible to prevent wrinkles and unevenness from occurring on the surface of the cover body, thereby improving the appearance quality. 【0008】 The second embodiment of the vehicle seat comprises a seat frame that constitutes the frame, a seat pad attached to the seat frame having a concave curved surface and having a pull groove formed that opens on the concave curved surface, with an embedded member embedded in the bottom of the pull groove, and a trim cover of the first embodiment in which the cover body is placed over the seat pad. 【0009】 In the second embodiment of the vehicle seat, a seat pad having a concave curved surface is attached to the seat frame that constitutes the frame. The seat pad has a pull groove that opens with a concave curved surface, and an embedded member is embedded in the bottom of the pull groove. The trim cover, which has a cover body placed over this seat pad, is of the first embodiment, and therefore the aforementioned effects are obtained. [Effects of the Invention] 【0010】 As described above, the trim cover and vehicle seat according to the present invention can improve the appearance quality in a configuration in which the cover body is placed over a seat pad having a concave curved surface. [Brief explanation of the drawing] 【0011】 [Figure 1] This is a side view showing a vehicle seat according to an embodiment. [Figure 2] This is a perspective view showing the seat back of a vehicle seat according to an embodiment. [Figure 3] This is a cross-sectional view showing the cross-section along the line F3-F3 in Figure 2. [Figure 4] This is a cross-sectional view corresponding to Figure 2, and is a diagram used to explain tensile tension. [Figure 5] This is a front view showing a part of the seat back according to the embodiment. [Figure 6] This is a cross-sectional view showing a portion of the seat back of a vehicle seat according to a comparative example. [Figure 7] This is a cross-sectional view corresponding to Figure 6, and is a diagram used to explain tensile tension. [Modes for carrying out the invention] 【0012】 Hereinafter, a vehicle seat 10 according to one embodiment of the present invention will be described with reference to Figures 1 to 5. In each figure, some reference numerals may be omitted for the sake of clarity. The arrows FR, LH, RH, and UP indicated as appropriate in each figure indicate the front, left, right, and top of the vehicle seat 10, respectively. Hereafter, when simply referring to the front, back, left, right, up, and down directions, these directions will be in relation to the vehicle seat 10. 【0013】 As shown in Figure 1, the vehicle seat 10 includes a seat cushion 12 on which the vehicle occupant sits, a seat back 14 that supports the occupant's back, and a headrest 16 that supports the occupant's head. The seat cushion 12 is connected to the vehicle floor via a sliding mechanism 18. 【0014】 The seat back 14 has a seat back frame 20 (see Figure 1) that constitutes its skeleton, a seat back pad 22 (see Figures 1 to 5) which is a cushioning material attached to the seat back frame 20, and a trim cover 30 (see Figures 1 to 5) which is the outer covering of the seat back pad 22. The seat back frame 20 corresponds to the "seat frame" in this invention, and the seat back pad 22 corresponds to the "seat pad" in this invention. 【0015】 The seat back frame 20 is constructed by combining, for example, press-formed metal plates or metal pipes. The lower end of the seat back frame 20 is reclinedly connected to the rear end of a seat cushion frame (not shown) that forms the skeleton of the seat cushion 12 via a well-known reclining mechanism 24. 【0016】 The seat back pad 22 is made of a foam such as urethane foam, etc., and is covered from above and in front of the seat back frame. A part of the front surface of this seat back pad 22 is a concave curved surface 22A (see FIG. 3) recessed rearward. In FIG. 3, CL is the center line of the seat back 14. A plurality of draw grooves 26 including the draw groove 26A shown in FIG. 3 are formed on the front surface of the seat back pad 22. 【0017】 The draw groove 26A extends in the left - right direction and opens at the concave curved surface 22A. This draw groove 26A is curved along the concave curved surface 22A, and is curved such that the central portion in the left - right direction is located on the rear side of both ends in the left - right direction when viewed from the up - down direction. Insert wires 42 are embedded in the bottom of each of the plurality of draw grooves 26 including the draw groove 26A. The insert wire 42 is, for example, embedded in the seat back pad 22 by integral foam molding. The insert wire 42 corresponds to the "embedded member" in the present invention. 【0018】 The trim cover 30 includes a cover body 32. The cover body 32 is formed in a bag shape by sewing a plurality of skin materials made of cloth, leather or synthetic leather, and is covered from above the seat back pad 22. 【0019】 On the front surface of the cover body 32, there are provided a sewing portion S1 extending in the left - right direction at the upper part of the seat back 14, a sewing portion S2 extending in the left - right direction at the vertical center part of the seat back 14, a sewing portion S3 extending in the up - down direction on the left side of the lower part of the seat back 14, and a sewing portion S4 extending in the up - down direction on the right side of the lower part of the seat back 14. The upper end of the sewing portion S3 is connected to the left end of the sewing portion S2, and the upper end of the sewing portion S4 is connected to the right end of the sewing portion S2. 【0020】 On the back side of the cover body 32, the above-described sewing parts S1, S2, S3, and S4 are respectively attached with suspenders 34 (see FIG. 3). These plurality of suspenders 34 are respectively arranged in the plurality of drawing grooves 26 described above. Each suspender 34 is formed in a long strip shape by a cloth-like material such as a non-woven fabric, and is arranged with the extending direction of each drawing groove 26 as the longitudinal direction. 【0021】 One end portion in the width direction of each suspender 34 is sewn together with the sewing parts S1, S2, S3, and S4. Each suspender 34 is locked to an insert wire 42 embedded in the bottom of each drawing groove 26 by using a plurality of hog rings 44 arranged at intervals in the extending direction of each drawing groove 26. The hog ring 44 corresponds to the "locking tool" in the present invention. Note that the "locking tool" in the present invention is not limited to the hog ring 44, and may be, for example, a clip made of resin. Further, the "embedded member" in the present invention is not limited to the insert wire 42, and may be a clip made of resin to which the above clip is locked. 【0022】 As shown in FIG. 3, the suspender 34 arranged in the drawing groove 26A (hereinafter simply referred to as "suspender 34") is arranged with the substantially front-rear direction as the width direction. A plurality of hog ring insertion holes 36 are formed in the middle portion in the width direction of this suspender 34, and the hog rings 44 are inserted through each hog ring insertion hole 36. 【0023】 In this suspender 3, cutouts <00> are formed in the portions between adjacent hog rings 44, respectively, which are cut out from the insert wire 42 side. By these cutouts <00>, the core material 38 fixed to the other end portion in the width direction of the suspender 34 is divided in the left-right direction. This core material 38 is made of, for example, resin, and has a long strip shape with the longitudinal direction of the suspender 34 as the longitudinal direction. 【0024】 The depth of each notch 40 (i.e., the dimension of each notch 40 in the width direction of the suspender 34) is deepest in the center between adjacent hog rings 44 (i.e., the center in the left-right direction), and each notch 40 has a pentagonal shape when viewed from above. Each notch 40 is formed in a roughly L-shape, with the edge opposite to the insert wire 42 (in this case, the front edge) bent forward in a convex shape. The left portion 40L of the front edge of this notch 40 is inclined backward as it moves to the left, and the right portion 40R of the front edge of this notch 40 is inclined backward as it moves to the right. 【0025】 The left portion 40L and the right portion 40L described above are formed in a straight line. The vertex of this notch 40 (i.e., the corner portion between the left portion 40L and the right portion 40L) is set at an angle greater than 90 degrees. A rounded shape may be set on a part of the vertex of the notch 40. This rounded shape is preferably set to a radius of 15 millimeters or less. In this embodiment, the notch 40 is pentagonal in shape, but it is not limited to this. The notch 40 may be triangular in shape, as its depth increases towards the center between adjacent hog rings 44 (i.e., the center in the left-right direction). 【0026】 In the vehicle seat 10 with the above configuration, the cover body 32 of the trim cover 30 is placed over the seat back pad 22 which has a concave curved surface 22A. The seat back pad 22 has a pull groove 26A that opens at the concave curved surface 22A, and an insert wire 42 is embedded at the bottom of the pull groove 26A. The suspender 34 attached to the cover body 32 is positioned in the pull groove 26A and is secured to the insert wire 42 using a plurality of hog rings 44 that are spaced apart in the extending direction of the pull groove 26A. 【0027】 In this suspender 34, a notch 40 is formed between adjacent hog rings 44, cut out from the insert wire 42 side. The notch 40 becomes deeper towards the center between adjacent hog rings 44. The left portion 40L of the leading edge of the notch 40 is inclined towards the rear as it moves to the left, and the right portion 40R of the leading edge of the notch 40 is inclined towards the rear as it moves to the right. 【0028】 Therefore, as shown in Figure 4, the tension TL and TR towards the hog ring 44 are generated along the left portion 40L and the right portion 40R, thereby generating a tension T towards the insert wire 42 in the left-right portion of the suspender 34 where the notch 40 is set. As a result, the tension T acting around the stitched portion S1 of the cover body 32 can be made uniform, and the surface of the cover body 32 can be made to conform to the concave curved surface 22A of the seat back pad 22, thus reproducing the shape as designed. Moreover, as shown in Figure 5, it is possible to prevent wrinkles and unevenness from occurring on the surface of the cover body 32 around the stitched portion S1, thereby improving the appearance quality of the vehicle seat. 【0029】 The effects described above will be further explained using comparative examples shown in Figures 6 and 7. In these comparative examples, the notches 40' of the suspenders 34' are square in shape, and the depth of the notches 40' is set to be constant in the left-right direction. In these comparative examples, tension T toward the insert wire 42 is generated in the left-right portion of the suspenders 34' where the hog rings 44 are provided, but tension T toward the insert wire 42 is not generated in the left-right portion of the suspenders 34' where the notches 40' are set. As a result, the surface of the cover body 32 cannot be recessed to conform to the concave curved surface 22A of the seat back pad 22, and the shape as designed cannot be reproduced. In addition, as shown in Figure 7, wrinkles and unevenness occur on the surface of the cover body 32 around the sewing portion S2, but this can be prevented in this embodiment. 【0030】 In the above embodiment, the case in which the present invention is applied to the trim cover 30 of the seat back 14 was described, but the present invention is not limited to this and can also be applied to the trim cover of the seat cushion. In that case, the seat cushion frame corresponds to the "seat frame" of the present invention, and the seat cushion pad corresponds to the "seat pad" of the present invention. 【0031】 Furthermore, the present invention can be implemented with various modifications without departing from its spirit. Of course, the scope of the present invention is not limited to the embodiments described above. [Explanation of Symbols] 【0032】 10 Vehicle seats 20 Seat back frame (seat frame) 22 Seat back pad (seat pad) 22A concave curved surface 26. Draw groove 30 Trim Cover 32 Cover body 34 Suspenders 40 notches 42 Insert wire (buried component) 44. Hog ring (locking device)

Claims

[Claim 1] A cover body that is placed over a sheet pad having a concave curved surface, a pull groove formed that opens on the concave curved surface, and an embedded member embedded in the bottom of the pull groove, A suspender attached to the cover body, positioned within the pull groove, and secured to the embedded member using a plurality of locking devices spaced apart in the direction of extension of the pull groove, wherein notches are formed between adjacent locking devices, cut out from the embedded member side, and the depth of the notches increases towards the center between adjacent locking devices, A trim cover having [a specific feature / feature]. [Claim 2] The sheet frame that makes up the skeleton, A seat pad is attached to the aforementioned seat frame, has a concave curved surface, has a pull groove formed that opens on the concave curved surface, and has an embedded member embedded in the bottom of the pull groove, The trim cover according to claim 1, wherein the cover body is placed over the seat pad, A vehicle seat equipped with [a specific feature / feature].

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