Trim assembly for vehicle and method for manufacturing the same

Abstract: A trim assembly 40 for a vehicle comprising: a top cover 10 comprising gather-sewn peripheral portions 12 and 13 to form gather-sewn portions 15; a plate-like base member 20, to which the peripheral portions 12 and 13 of the top cover 10 are sewn on peripheral portions 22 and 23 of the base member to form sewn portions 26; and a cushion member inserted between the plate-like base member 20 and the top cover 10; wherein a gather-sewn upper peripheral portion 12 of the top cover 10 is overlapped and sewn on an upper peripheral portion on a body side surface of the base member 20 to form a sewn portion 26, the overlapped and sewn top cover 10 is turned over upwardly and further turned over beyond an upper edge of the base member 20 so as to face a room side surface of the base member 20, a gather-sewn lower peripheral portion 13 of the further turned top cover 10 is overlapped and sewn on a lower peripheral portion on the room side surface of the base member 20 to form a sewn portion 26, and the lower peripheral portion 23 of the base member 20 is turned back onto the body side surface of the base member 20 to form a lower peripheral turned back portion 29 and is fastened to the body side surface of the base member together with the sewn lower peripheral portion of the top cover 10 by tucking or stapling 34. The cushion member comprises a plate-like attachment base 32 for securing the trim assembly 40 to a body of the vehicle, a cushion material 30 fastened to the attachment base, and a slippery layer 31 which makes the top cover 10 easy to slip on a surface of the cushion material.

Description: The present invention relates to a trim assembly for a vehicle, which has a gathered top cover made of natural leather or the like and a method for manufacturing the same. Description of Related Art In a door lining or trim panel for a vehicle, a trim assembly (pad) having a gathered top cover made of natural leather or the like to improve luxurious feeling for aesthetic appearance has been known. EP 0 543 066 discloses an automotive interior component such as an automotive door brin comprising a main body integrally combining a resin core member and a surface skin member by a mold press forming process and an attachment member attached to a main part of the body, wherein: the attachment member is attached to the main body by way of a connecting part of the resin core member still at least in semi-motten state as a result of the mold press forming process, the connecting part eventually solidifying so as to achieve a secure engagement between the resin core member and the attachment member. FIG. 12 shows a trim assembly (pad) having a gathered top cover according to an example of an earlier technology. Such an earlier door lining assembly (pad) or a trim panel assembly (pad) 80 for a door lining or a trim panel for a vehicle is manufactured by gather-sewing peripheral portions of a top cover 81 to form gather-sewn portions 82, sewing the peripheral portions of the top cover 81 to form sewn portions 85 on peripheral portions of one-piece cardboard or pasteboard 84 to a room side surface to which polyurethane foam 83 for a cushion member is fastened, turning back both of the peripheral portions, of the top cover 81 and the cardboard or pasteboard 84 to form turned back portions 87 so as to wrap the peripheral portions of a resin attachment base 86, and subsequently bonding both of the turned peripheral portions, of the top cover 81 and the cardboard or pasteboard 84 to a body side surface of the resin attachment base 86. FIG. 13 shows a trim assembly (pad) having a gathered top cover according to another embodiment of an earlier technology. Another earlier door lining assembly (pad) or trim panel assembly (pad) 90 for a door lining or a trim panel for a vehicle is manufactured by gather-sewing peripheral portions of a top cover 91 to form gather-sewn portions 92, sewing belt shaped cardboard or pasteboard 93 on the gather-sewn peripheral portions of the top cover to form sewn portions 94, the belt shaped cardboard or pasteboard 93 be divided into plurality, turning back the peripheral portions of the top cover 91 to a body side surface of a resin attachment base 96 to form turned back portions 97 so as to wrap the peripheral portions of the resin attachment base 96, on the room side surface of which polyurethane foam 95 is fastened, and bonding the turned peripheral portions of the top cover 91 on the body side surface of the resin attachment base 96. However, there are problems in above-described earlier trim assemblies for a door lining or a trim panel for a vehicle from a manufacturing standpoint. In the earlier door lining assembly or trim panel assembly 80 for a door lining or a trim panel for a vehicle, as shown in FIG. 12, when turning back both of the peripheral portions, of the top cover 81 and the cardboard or pasteboard 84 to the body side surface of the resin attachment base 86 to form the turned back portions 87 so as to wrap the peripheral portions of the resin attachment base 86, and bonding both of the turned peripheral portions, of the top cover 81 and the cardboard or the pasteboard 84 on the peripheral portions on the body side surface of the resin attachment base 86, because the peripheral portions of the resin attachment base 86 has curve for the purpose of aesthetic appearance, it is difficult to turn back both of the peripheral portions, of the top cover 81 and the cardboard or the pasteboard 84 to form the turned back portions 87 so as to wrap the curved peripheral portions of the resin attachment base 86. As the result, a shape of the peripheral portions of the door lining assembly or the trim panel assembly 80 is not stylish. Further, when the cardboard or the pasteboard 84 is turned back to the body side surface of the resin attachment base 86 to put the curved peripheral portions of the resin attachment base 86 between the body side surface of the cardboard or the pasteboard 84 and turned peripheral portions of the cardboard or the pasteboard 84, because undesired wrinkles are made, shapes of gathers in lengthwise on the top cover 81 are floating. In the another earlier door lining assembly or the trim panel assembly 90 for a door lining or a trim panel for a vehicle, as shown in FIG. 13, shapes of gathers in lengthwise on the top cover 91 are floating when positions of the upper and lower belt shaped cardboard or the pasteboard 93 bonded on the peripheral portions of the resin attachment base 96 are not trued up. It is difficult to bond the belt shaped cardboard or pasteboard 93 on the peripheral portions of the resin attachment base 96, with truing up the positions of the upper and lower belt shaped cardboard or pasteboard 93 completely, because sizes and shapes of members are not uniform and the door lining assembly or the trim panel assembly 90 is manufactured by handiwork. SUMMARY OF THE INVENTION The present invention has been developed in view of these problems. An object of the present invention is to provide a trim assembly for a vehicle, which has a top cover having gathers formed easily and firmly, and a work for assembling the one requires short time. Another object of the present invention is to provide a method for manufacturing the same. In order to accomplish the above objects, and in accordance with one aspect of the invention, there is provided a trim assembly for a vehicle comprising a top cover comprising a gather-sewn peripheral portion; a plate-like base member, to which the peripheral portion of the top cover is sewn on a peripheral portion of the base member; and a cushion member inserted between the plate-like base member and the top cover; wherein an upper part of the gather-sewn peripheral portion of the top cover is overlapped and sewn on an upper peripheral portion on a body side surface of the base member, the brin assembly being characterised in that the overlapped and sewn top cover is turned over upwardly and further turned over beyond an upper edge of the base member so as to face a room side surface of the base member, and a lower gather-sewn peripheral portion of the further turned top cover is overlapped and sewn on a lower peripheral portion on the room side surface of the base member. According to the trim assembly, after the upper part of the peripheral portion of the top cover is overlapped and sewn on the upper peripheral portion on the body side surface of the base member, the overlapped and sewn top cover can be turned over upwardly and further turned over beyond the upper edge of the base member so as to face the room side surface of the base member and thereafter the lower gather-sewn peripheral portion of the further turned top cover can be overlapped and sewn on the lower peripheral portion on the room side surface of the base member. As the result, it is not required to be turned back the upper peripheral portion of the base member to the body side thereof. Therefore, it is possible to make the upper peripheral portion of the trim assembly thin and to make a step for manufacturing the trim assembly easy. The lower peripheral portion of the base member may be turned back onto and fastened to the body side surface of the base member together with the sewn lower peripheral portion of the top cover. The trim assembly can be used for a door lining assembly (pad) or a trim panel assembly (pad) for a door panel of a vehicle. The trim assembly also can be used for a side lining assembly (pad) for a body side molding, and the like. In particular, the top cover can comprise natural leather formed from a cowhide, horse hide or other animal hide. It can be also used artificial leather, cloth made of fibers, or the like therefor. The plate-like base member can comprise cardboard or pasteboard. Thin resin, comparatively rigid resin, and the like can be also used therefor. As described above, according to the trim assembly, when after the upper part of the gather-sewn peripheral portion of the top cover is overlapped and sewn on the upper peripheral portion on the body side surface of the base member, the overlapped and sewn top cover is turned over upwardly and further turned over beyond the upper edge of the base member so as to face the room side surface of the base member, and the lower gather-sewn peripheral portion of the further turned top cover is overlapped and sewn on the lower peripheral portion on the room side surface of the base member, the lower peripheral portion of the base member can be turned back onto and fastened to the body side surface of the base member together with the sewn lower peripheral portion of the top cover. As the result, it is possible to form the gathers easily, and the work for assembling the trim assembly requires short time. Further, because the cushion member is inserted between the plate-like base member and the top cover, tension of the top cover is uniform thereby. Therefore, it is possible to uniformly form the gathers on the top cover. The cushion member may comprise a plate-like attachment base for securing the trim assembly to a body of the vehicle, and a cushion material fastened to the attachment base. For the plate-like attachment base, polypropylene may be used. However, another rigid resin may be also used therefor. The cushion material may comprise foamed resin which is polyurethane foam or the like. Another material may be also used for the cushion material. According to the trim assembly, because the cushion member comprises the plate-like attachment base for securing the trim assembly to the body of the vehicle, and the cushion material fastened to the attachment base, it is possible to attach the trim assembly to the body of the vehicle by using the attachment base. The cushion member may comprise a slippery layer which makes the top cover easy to slip on a surface of the cushion material. For the slippery layer, cloth made of nylon or the like or span bond which is made of non-woven cloth may be used. Another material may be also used, and coated layer for slipping may be used for the slippery layer. According to the trim assembly, because the slippery layer which makes the top cover easy to slip is formed on the surface of the cushion material, the top cover may be slippery against the cushion member. As the result, it is possible to keep the uniformly formed gathers on the top cover. The plate-like attachment base may comprise a plurality of hooks for securing the trim assembly to the body of the vehicle, while a plurality of holes may be formed in the base member for the hooks to project through the holes so as to secure the trim assembly to the body. Each hook may comprise a shape like a "T", in cross section. According to the trim assembly, because the plate-like attachment base comprises the plurality of hooks for securing the trim assembly to the body of the vehicle, and the plurality of holes are formed in the base member for the hooks to project through the holes so as to secure the trim assembly to the body, it is possible to easily attach the trim assembly to the body of the vehicle by using the attachment base. Further, because the hooks comprise a shape like the "T", in cross section, it may be possible to position the trim assembly to the body of the vehicle by easy operation. In accordance with another aspect of the invention, a method for manufacturing a trim assembly for a vehicle, comprises the steps of: gather-sewing a peripheral portion of a top cover; forming the top cover and a plate-like base member into a bag-like member by overlapping and sewing an upper part of the gather-sewn peripheral portion of the top cover on an upper peripheral portion on a body side surface of the base member, inserting a cushion member into an inside of the bag-like member; said method being characterised in that it includes the steps of turning over the overlapped and sewn top cover upwardly and further turning over beyond an upper edge of the base member so as to face a room side surface of the base member, and overlapping and sewing a lower gather-sewn peripheral portion of the further turned top cover on a lower peripheral portion on the room side surface of the base member; turning back the lower peripheral portion of the base member onto the body side surface of the base member together with the sewn lower peripheral portion of the top cover; and fastening the turned back lower peripheral portion of the base member to the body side surface of the base member together with the sewn lower peripheral portion of the top cover. In this case, the gather-sewing and the sewing are carried out by using a sewing machine. The fastening may be carried out by tucking or stapling, for example. The fastening may be also carried out by bonding. According to the method, because after the upper part of the gather-sewn peripheral portion of the top cover is overlapped and sewn on the upper peripheral portion on the body side surface of the base member, the overlapped and sewn top cover is turned over upwardly and further turned over beyond the upper edge of the base member so as to face a room side surface of the base member, and the lower gather-sewn peripheral portion of the further turned top cover is overlapped and sewn on the lower peripheral portion on the room side surface of the base member, the lower peripheral portion of the base member can be turned back onto and fastened to the body side surface of the base member together with the sewn lower peripheral portion of the top cover. As the result, it is possible to form the gathers easily, and the work for assembling the trim assembly requires short time. Further, because the cushion member is inserted between the plate-like base member and the top cover, tension of the top cover is uniform thereby. Therefore, it is possible to uniformly form the gathers on the top cover. The method may further comprise a step for previously forming a fold on the base member to make the lower peripheral portion of the base member easy to be turned back to a body side, together with the lower peripheral portion of the top cover sewn thereto. According to the method, because the fold can be previously formed on the base member to make the lower peripheral portion thereof easy to be turned back to the body side, it can be possible to easily turn back the lower peripheral portion of the base member together with the lower peripheral portion of the top cover sewn thereto, to the body side along the fold. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the invention will become more apparent from the following description taken in conjunction with the accompanying drawings wherein like references refer to like parts and wherein: FIGS. 1A and 1B show a member of the door lining assembly or trim panel assembly, of a trim assembly for a vehicle according to an embodiment of the present invention; wherein FIG. 1A is a front view of a bag-like member which is illustrated from the room side of the vehicle, and FIG. 1B is a rear view of the bag-like member which is illustrated from the body side of the vehicle; FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1A looking in the direction of the arrows; FIG. 3 is a vertical sectional view of an embodiment of the cushion member to be inserted into the bag-like member shown in FIGS. 1A and 1B; FIG. 4 is a perspective view showing a state of inserting the cushion member shown in FIG. 3 into the bag-like member; FIG. 5 is a vertical sectional view showing a completed state of the door lining assembly or trim panel assembly according to the embodiment; FIG. 6 is an enlarged detail of a hook of the door lining assembly or trim panel assembly, as shown in FIG. 3; FIG. 7 is an enlarged detail of a slide hole portion of the door lining or trim panel, for attaching the hook; FIG. 8 is a partially rear view of the door lining or trim panel to which the door lining assembly or trim panel assembly according to the embodiment is attached; FIG. 9 is an enlarged detail of the hook which is attached to the slide hole portion, as shown in FIG 8; FIG. 10 is a schematic front view showing an embodiment of an attachment of the door lining assembly or trim panel assembly to the door lining or trim panel; FIG. 11 is a cross-sectional view taken along the line B-B of FIG. 10 looking in the direction of the arrows; FIG. 12 is a vertical sectional view showing a trim assembly for a vehicle having a gathered top cover according to an example of an earlier technology; and FIG. 13 is a vertical sectional view showing a trim assembly for a vehicle having a gathered top cover according to another example of an earlier technology, which is different from the one shown in FIG. 12. PREFFERED EMBODIMENT OF THE INVENTION The embodiment of the trim assembly for a vehicle and the method manufacturing such a trim assembly, in accordance with the present invention will be explained with reference to FIGS. 1A to 11. FIGS. 1A and 1B show a member of the door lining assembly or the trim panel assembly, of a trim assembly for a vehicle according to an embodiment of the present invention; wherein FIG. 1A is a front view of a bag-like member which is illustrated from the room side of the vehicle, and FIG. 1B is a rear view of the bag-like member which is illustrated from the body side of the vehicle. FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1A looking in the direction of the arrows. The trim assembly for a vehicle according to the embodiment comprises a top cover 10, a plate-like base member 20, and a cushion member inserted between them. The top cover 10 is made of natural leather. The periphery of the top cover 10 comprises an upper peripheral portion 12 and a lower peripheral portion 13, which extend from a tapered front portion 11 toward the rear side in upper and lower sides, respectively, and a rear peripheral portion 14 which connects the rear ends of the upper and lower peripheral portions 12 and 13, as shown in FIGS. 1A and 1B. The upper peripheral portion 12 has an approximately continuous arc shaped edge line extending from the tapered front portion 11 to the rear end. The tapered front portion 11 comprises a small projecting portion 11a which projects in a front direction. The lower peripheral portion 13 comprises a first sloped peripheral portion 13a extending in the rear and a little lower direction from the tapered front portion 11, a second sloped peripheral portion 13b which goes down a step from the first sloped peripheral portion 13a and extends in the rear direction, and a straight shaped portion 13c which goes down a step from the second sloped peripheral portion 13b and extends in the rear direction to connect a lower end of the rear peripheral portion 14. The rear peripheral portion 14 connects to the rear ends, of the upper peripheral portion 12 and the straight shaped portion 13c, respectively. A gather-sewing is carried out on the top cover along the upper peripheral portion 12 and the straight shaped portion 13c, except the first sloped peripheral portion 13a and the second sloped peripheral portion 13b, to form gather-sewn portions 15 shown in FIGS. 1A and 2. The periphery of the cardboard or pasteboard 20 which is for a plate-like base member comprises an upper peripheral portion 22, a lower peripheral portion 23, and a rear peripheral portion 24. The upper peripheral portion 22 has an approximately continuous arc shaped edge line extending from a tapered front portion 21 to the rear end. The tapered front portion 21 comprises a straight shaped front end portion 21a. The lower peripheral portion 23 comprises a sloped peripheral portion 23b and a straight shaped portion 23c which goes down a step from the sloped peripheral portion 23b and extends in the rear direction to connect a lower end of the rear peripheral portion 24. The rear peripheral portion 24 connects to the rear ends, of the upper peripheral portion 22 and the straight shaped portion 23c, respectively. A fold 25 is formed in the cardboard or the pasteboard 20 in arc shaped along upper portions of the sloped peripheral portion 23b and the straight shaped portion 23c. The upper peripheral portion 12 of the top cover 10 is overlapped and sewn on a body side surface of the upper peripheral portion 22 of the cardboard or the pasteboard 20, with truing up the upper edges of the top cover 10 and the base member 20, to form a sewn portion 26. Thereafter, the top cover 10 is turned over upwardly and further turned over beyond an upper edge of the base member so as to face a room side surface of the cardboard or the pasteboard 20 to form an upper turned over peripheral portion 16. Then, the straight shaped portion 13c of the further turned top cover 10 is overlapped and sewn on the room side surface of the straight shaped portion 23c of the cardboard or the pasteboard 20 together to form a sewn portion 26. The sloped peripheral portion 23b of the cardboard or the pasteboard 20 and the second sloped peripheral portion 13b of the top cover 10 are also sewn to form the sewn portions 26. As the result, a bag-like member wherein the rear peripheral portions 14 and 24 are open is formed by the top cover 10 and the cardboard or the pasteboard 20. In this state, a large number of gathers 17 in lengthwise are formed on the top cover 10. A large number of hole portions 27 and 28 are formed in the cardboard or the pasteboard 20. FIG. 3 shows a cushion member which is inserted into an inside of the bag-like member according to the embodiment. The cushion member comprises a cushion material 30, a slippery layer 31 formed on the cushion material 30, and a plate-like attachment base 32 for mounting the cushion material 30. The cushion material 30 comprises, for example, polyurethane foam which has a thickness of about 8 millimeters. On a surface of the cushion material 30, the surface layer 31 which comprises cloth made of nylon or spun bond made of non-woven cloth is provided by bonding and the like. The cushion material 30 and a plate-like attachment base 32 which comprises rigid resin like polypropylene for example are made as a body by bonding or the like. A large number of hooks 33 are provided on a body side surface of the attachment base 32, as shown in FIG. 3. Each hooks 33 comprises a shape like a "T", in cross section, as shown in FIG. 6. The hooks 33 have bars 33a and 33b in both right and left end sides thereof. The cushion member which comprises the cushion material 30, the slippery layer 31 and the attachment base 32 has a shape suitable to be inserted into the inside of the bag-like member which is made of the top cover 10 and the cardboard or the pasteboard 20. The cushion member is inserted into the inside of the bag-like member from the opening portion at the rear peripheral portions 14 and 24, as shown in FIG. 4. Then, the hooks 33 on the body side surface of the attachment base 32 are projected through each hole portion 27 and 28 of the cardboard or the pasteboard 20. The lower peripheral portion 13 of the top cover 10 and the lower peripheral portion 23 of the cardboard or the pasteboard 20 are turned back onto the body side surface of the cardboard or the pasteboard 20 to form a lower peripheral turned back portion 29, along the fold 25 which is formed in the cardboard or the pasteboard 20, thereafter the lower peripheral turned back portion 29 is fastened to the body side surface of the cardboard or the pasteboard 20 by tucking or stapling 34, as shown in FIG. 5. The rear peripheral portion 14 of the top cover 10 is also turned back onto the body side surface of the rear peripheral portion 24 of the cardboard or the pasteboard 20 and fastened thereto by tucking or stapling. The small projecting portion 11a of the tapered front portion 11 of the top cover 10 is also turned back onto a body side surface of the tapered front portion 21 of the cardboard or the pasteboard 20 and fastened thereto by tucking or stapling 34. As the result, a door lining assembly (pad) or a trim panel assembly (pad) 40 can be manufactured. The door lining assembly or the trim panel assembly 40 is attached to a door lining or a trim panel 60, as shown in FIGS. 10 and 11. The door lining or the trim panel 60 comprises a speaker 61 and an accessory pocket 62 on a lower portion thereof. An assembly attachment recess portion 63 is formed along an upper side of the accessory pocket 62. An inner shield or a whether strip 64 is provided to the door lining or the trim panel 60 along an upper peripheral portion of the door lining or the trim panel 60. A plurality of slide hole portions 35 are formed on the assembly attachment recess portion 63. Each slide hole portions 35 has a concave portion. That is, Each slide hole portions 35 has two convex portions 35a and 35b, as shown in FIG. 7. FIG. 8 shows a partially rear view of the door lining or the trim panel 60 to which the door lining assembly or the trim panel assembly 40 is attached by the hooks 33 through the slide hole portions 35. FIG. 9 shows an enlarged detail of the hooks 33 which are fitted in the slide hole portions 35. The door lining assembly or the trim panel assembly 40 is fitted to the assembly attachment recess portion 63 of the door lining or the trim panel 60, so that the hooks 33 which project to a body side of the door lining assembly or the trim panel assembly 40 are projected to the body side of the door lining or the trim panel 60 through the slide hole portions 35. When the door lining assembly or the trim panel assembly 40 is slid in the front or the rear direction, the convex portions 33c of the "T" of the hooks 33 are fitted in the concave portions of the slide hole portions 35. Two projecting portions 35a and 35b of the slide hole portions 35 are put between the convex portions 33c of the "T" and the bars 33a and 33b, of the hooks 33, as shown in FIGS. 8 and 9. Then, the hooks 33 are secured to the door lining or the trim panel 60 by self-tapping screw or welding staking. As described above, according to the door lining assembly or the trim panel assembly 40 in the embodiment of the invention, because the cushion member is inserted into the inside of the bag-like member formed by the top cover 10 and the cardboard or the pasteboard 20, the advantages are that (1) it is possible to form the gathers 17 on the top cover 10 easily, (2) the work for assembling the top cover 10, the cardboard or the pasteboard 20, and the cushion member requires short time, (3) the tension of the top cover 10 can be uniform by the cushion member, (4) variation spread in the gathers 17 can be small, and (5) variation spread in the work for assembling the members can be small, so that it is possible to form the gathers 17 on the top cover 10 uniformly. According to the embodiment as described above, the top cover comprises the natural leather. However, it is not limited to this, for example, artificial leather, cloth made of fibers, or the like can be also used for the top cover. The materials of the base member, the cushion material, the attachment base, and the surface layer of the cushion member are not also limited to that in the embodiment. As described above, according to the trim assembly, because after the upper part of the gather-sewn peripheral portion of the top cover is overlapped and sewn on the upper peripheral portion on the body side surface of the base member, the overlapped and sewn top cover is turned over upwardly and further turned over beyond the upper edge of the base member so as to face the room side surface of the base member, and the lower gather-sewn peripheral portion of the further turned top cover is overlapped and sewn on the lower peripheral portion on the room side surface of the base member, the lower peripheral portion of the base member can be turned back onto and fastened to the body side surface of the base member together with the sewn lower peripheral portion of the top cover. As the result, it is possible to form the gathers easily, and the work for assembling the trim assembly requires short time. Further, because the cushion member is inserted between the plate-like base member and the top cover, tension of the top cover is uniform thereby. Therefore, it is possible to uniformly form the gathers on the top cover. According to the trim assembly, because the cushion member comprises the plate-like attachment base for securing the trim assembly to the body of the vehicle, it is possible to further obtain a benefit that the trim assembly can be attached to a door panel of the vehicle by using the attachment base. According to the trim assembly, because the slippery layer which makes the top cover easy to slip is formed on the surface of the cushion material, the top cover can be slippery against the cushion member. As the result, it is possible to further obtain a benefit that it is possible to keep the uniformly formed gathers on the top cover. According to the trim assembly, because the plate-like attachment base comprises the plurality of hooks for securing the trim assembly to the body of the vehicle, and the plurality of holes is formed in the base member for the hooks to project through the holes so as to secure the trim assembly to the body, it is possible to easily attach the trim assembly to the body of the vehicle by using the attachment base. Further, because the hooks comprise a shape like the "T", in cross section, it is possible to position the trim assembly to the body of the vehicle by easy operation. According to the method for manufacturing the trim assembly, because after the upper part of the gather-sewn peripheral portion of the top cover is overlapped and sewn on the upper peripheral portion on the body side surface of the base member, the overlapped and sewn top cover is turned over upwardly and further turned over beyond the upper edge of the base member so as to face the room side surface of the base member, and the lower gather-sewn peripheral portion of the further turned top cover is overlapped and sewn on the lower peripheral portion on the room side surface of the base member, the lower peripheral portion of the top cover can be turned back onto and fastened to the body side surface of the base member. As the result, it is possible to form the gathers easily, and the work for assembling the trim assembly requires short time. Further, because the cushion member is inserted between the plate-like base member and the top cover, tension of the top cover is uniform thereby. Therefore, it is possible to uniformly form the gathers on the top cover. According to the method for manufacturing the trim assembly, because the fold is previously formed on the base member to make the lower peripheral portion thereof easy to be turned back to the body side, it is possible to further obtain a benefit that it is possible to easily turn back the lower peripheral portion of the base member together with the lower peripheral portion of the top cover sewn thereto, to the body side along the fold. According to the trim assembly, after the upper part of the peripheral portion of the top cover is overlapped and sewn on the upper peripheral portion on the body side surface of the base member, the overlapped and sewn top cover can be turned over upwardly and further turned over beyond the upper edge of the base member so as to face the room side surface of the base member and thereafter the lower gather-sewn peripheral portion of the further turned top cover can be overlapped and sewn on the lower peripheral portion on the room side surface of the base member. As the result, it is not required to be turned back the upper peripheral portion of the base member to the body side thereof. Therefore, it is possible to make the upper peripheral portion of the trim assembly thin and to make a step for manufacturing the trim assembly easy. Obviously, many modifications and variations of the present invention in light of the above teaching may be made. It is, therefore, to be understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

Claims: A trim assembly for a vehicle comprising: a top cover (10) comprising a gather-sewn peripheral portion; a plate-like base member (20), to which the peripheral portion of the top cover (10) is sewn on a peripheral portion of the base member (20); and a cushion member inserted between the plate-like base member and the top cover (10); wherein an upper part (12) of the gather-sewn peripheral portion of the top cover (10) is overlapped and sewn on an upper peripheral portion (22) on a body side surface of the base member (20), the brin assembly being characterised in that the overlapped and sewn top cover (10) is turned over upwardly and further turned over beyond an upper edge of the base member (20) so as to face a room side surface of the base member (20), a lower gather-sewn peripheral portion (13) of the further turned top cover (10) is overlapped and sewn on a lower peripheral portion (23) on the room side surface of the base member (20). A trim assembly for a vehicle as claimed in Claim 1 wherein the lower peripheral portion (23) of the base member (20) is turned back onto and fastened to the body side surface of the base member (20) together with the sewn lower peripheral portion (13) of the top cover (10). A trim assembly for a vehicle as claimed in claim 2, wherein the cushion member comprises a plate-like attachment base (32) for securing the trim assembly to a body of the vehicle, and a cushion material (30) fastened to the attachment base (32). A trim assembly for a vehicle as claimed in claim 2, wherein the cushion member comprises a cushion material (30), and a slippery layer (31) which makes the top cover (10) easy to slip on a surface of the cushion material (30). A trim assembly for a vehicle as claimed in claim 3, wherein the cushion member further comprises a slippery layer (31) which makes the top cover easy to slip on a surface of the cushion material (30). A trim assembly for a vehicle as claimed in claim 3, wherein the plate-like attachment base (32) comprises a plurality of hooks (33) for securing the trim assembly to the body of the vehicle. A trim assembly for a vehicle as claimed in claim 6, wherein each hook (33) comprises a shape like a "T", in cross section. A trim assembly for a vehicle as claimed in claim 7, wherein a plurality of holes (27, 28) are formed in the base member (20) for the hooks (33) to project through the holes (27, 28) so as to secure the trim assembly to the body. A method for manufacturing a trim assembly for a vehicle, comprising the steps of: gather-sewing a peripheral portion of a top cover (10); forming the top cover (10) and a plate-like base member (20) into a bag-like member by overlapping and sewing an upper part (12) of the gather-sewn peripheral portion of the top cover (10) on an upper peripheral portion (22) on a body side surface of the base member (20); and inserting a cushion member into an inside of the bag-like member; said method being characterised in that it includes the steps of : turning over the overlapped and sewn top cover (10) upwardly and further turning over beyond an upper edge of the base member (20) so as to face a room side surface of the base member (20), and overlapping and sewing a lower gather-sewn peripheral portion (13) of the further turned top cover (10) on a lower peripheral portion (23) on the room side surface of the base member (20); turning back the lower peripheral portion (23) of the base member (20) onto the body side surface of the base member (20) together with the sewn lower peripheral portion (13) of the top cover (10); and fastening the turned back lower peripheral portion (23) of the base member (20) to the body side surface of the base member (20) together with the sewn lower peripheral portion (13) of the top cover (10). A method as claimed in claim 9, further comprising a step for previously forming a fold (25) on the base member (20) to make the lower peripheral portion (13) of the base member (20) easy to be turned back to a body side, together with the lower peripheral portion (13) of the top cover (10) sewn thereto.

Inventors: KUROSAKI HIDEYUKI, KUROSAKI, HIDEYUKI, Kurosaki, Hideyuki, c/o TS Tech Co., Ltd.
Applicants: TS TECH CO LTD, TS TECH CO., LTD
Application year: 1998
Main classification: B60R13
IPC codes: B60J5, B60R13