JP2017080013A - Vehicle seat and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stable-quality vehicle seat that includes a seat cover configured by sewing a trim cover to a member formed by molding a flexible resin, at a relatively low manufacturing cost.SOLUTION: The vehicle seat includes: a flexible cushion member; a trim cover for covering the surface of the flexible cushion member; and a flexible resin for covering a lateral surface of the flexible cushion member; and is configured to connect the trim cover to the flexible resin by sewing. The flexible resin is formed of members molded by dividing a shape of covering the lateral face of the cushion member into the plurality of parts, and the members molded by dividing the shape into the plurality parts are connected by sewing or sticking, into the shape for covering the lateral face of the cushion member.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat used for a vehicle such as a passenger car or a truck, and a method for manufacturing the same.

  2. Description of the Related Art A vehicle seat used for a vehicle such as a passenger car or a truck includes a cushion seat on which a passenger is seated and a seat back on which a passenger seated on the cushion seat can lean. As described in Patent Document 1, each of the cushion seat and the seat back has a configuration in which each urethane pad is supported by a metal frame, and the side of the urethane pad surface on which the passenger contacts is covered with a seat cover. .

  Patent Document 1 discloses a configuration in which a trim cover is sewn to a member made by molding a flexible resin, and the other side of the member made of the flexible resin is fixed to a side finisher as the seat cover. ing.

JP 2014-8794 A

  In the configuration described in Patent Document 1, it is possible to relatively easily perform the operation of covering the seat back with the seat cover by using a sewable flexible resin. However, if the shape of the flexible resin is made to match the shape of the seat back, the mold for molding the flexible resin becomes large, which may increase the manufacturing cost.

  The present invention solves the above-mentioned problems of the prior art, a vehicle seat provided with a seat cover configured by sewing a trim cover to a member formed by molding a flexible resin, at a relatively low manufacturing cost, Another object of the present invention is to provide a vehicle seat having a seat cover that can be provided with stable quality and a method for manufacturing the same.

  In order to solve the above-described problems, the present invention includes a flexible cushion member, a trim cover that covers the surface of the flexible cushion member, and a flexible resin that covers a side surface of the flexible cushion member, In a vehicle seat having a configuration in which a flexible resin is sewn and connected, the flexible resin is formed by a member formed by dividing a shape covering the side surface of the cushion member into a plurality of pieces, and divided into a plurality of shapes. The formed members were connected to each other by stitching or bonding to form a shape covering the side surface of the cushion member.

  In order to solve the above-described problems, in the present invention, in a vehicle seat provided with a cushion seat on which a passenger sits and a seat back on which a passenger seated on the cushion seat leans back, the cushion seat and the seat Each of the backs is a resin member formed by molding a flexible cushion member, a trim cover that covers a side of the surface of the flexible cushion member that contacts a seated passenger, and a flexible resin that covers a side surface of the flexible cushion member. The resin member is formed by bonding or bonding a divided member formed by molding a flexible resin divided into a plurality of pieces, and a resin member formed by bonding the divided member and a trim cover. It was connected by sewing.

  Furthermore, in order to solve the above-described problems, according to the present invention, in the vehicle seat manufacturing method, a plurality of side covers of the vehicle seat formed by splitting with a flexible resin are stitched or bonded to form a side cover assembly. Form a solid, sew the trim cover upside down with respect to the side cover assembly, flip the side cover stitched to the side cover assembly to make the trim cover skin face up, and the trim cover skin face up In this state, the side cover assembly and the trim cover that are sewn together are attached to the seat back.

  According to the present invention, in a vehicle seat, a seat cover configured by sewing a trim cover to a member formed by molding a flexible resin can be manufactured at a relatively low cost. In addition, the product quality of the seat cover can be stabilized.

It is a perspective view of the vehicle seat which concerns on Example 1 of this invention. It is AA sectional drawing in FIG. 1 of the vehicle seat which concerns on Example 1 of this invention. It is a perspective view of a trim cover and a side cover in a state where the vehicle seat according to the first embodiment of the present invention is stitched. It is a perspective view of the connection part of the side cover of the vehicle seat which concerns on Example 1 of this invention. FIG. 3 is a perspective view of the vicinity of a connection portion between the left side cover and the upper side cover of the vehicle seat according to the first embodiment of the invention. It is a BB cross-sectional arrow view in FIG. 5 of the vehicle seat which concerns on Example 1 of this invention. FIG. 3 is a perspective view of the vicinity of the connection portion between the upper side cover and the left side cover of the vehicle seat according to the first embodiment of the present invention. It is CC sectional view taken on the line in FIG. 7 of the vehicle seat which concerns on Example 1 of this invention. It is sectional drawing of the connection part of the left side cover and upper surface side cover of the vehicle seat which concerns on Example 1 of this invention. It is sectional drawing along the stitching | suture surface of the connection part of the left side cover and upper surface side cover of the vehicle seat which concerns on Example 1 of this invention. FIG. 3 is an enlarged cross-sectional view of a portion circled in FIG. 2 of the vehicle seat according to the first embodiment of the present invention. It is sectional drawing which shows the state immediately after stitching | suture of the side cover and trim cover in the vehicle seat which concerns on Example 1 of this invention. It is sectional drawing which shows the state which turned the trim cover upside down after the stitching | suture of the side cover and trim cover in the vehicle seat which concerns on Example 1 of this invention, and made the skin side the upper surface. It is a flowchart which shows a flow in a series of processes which sew the side cover assembly and trim cover in the vehicle seat which concern on Example 1 of this invention, and mount | wear with a seat back.

  The present invention has a configuration in which a cushion seat and a seat back of a vehicle seat each cover a surface of a flexible cushion member with a trim cover, and cover a side surface of the flexible cushion member with a resin member formed by molding a flexible resin. The resin member is formed by joining the divided members formed by dividing the resin member, and the resin member formed by joining the divided members and the trim cover are sewn and connected. .

  And in the part which joins the division member formed by molding this flexible resin, the projection formed on one side division member is fitted into the hole formed on the other division member and temporarily fixed By doing so, it is possible to easily and reliably join without causing a positional shift between the divided members to be joined in the step of joining the divided members.

  Components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments, and the repetitive description thereof is omitted in principle. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a basic configuration of a vehicle seat 1 targeted in this embodiment. The vehicle seat 1 includes a cushion seat 2 on which a passenger sits, a seat back 3 on which a passenger sitting on a cushion seat leans back, a headrest 4 that supports the head of the passenger, and a side support 5.

FIG. 2 shows an AA cross section of the seat back 3 of FIG. In FIG. 2, in order to simplify the description, the display of structural components is omitted. In the cross section of the seat back shown in FIG. 2, the surface of the urethane pad 31 (the surface on the side where the back of the occupant seated on the cushion seat 2 contacts) is covered with the trim cover 32, and the side surface of the urethane pad 31 is flexible resin ( For example, it is covered with a side cover 33 formed of olefin-based thermoplastic elastomer. As will be described in detail later, the trim cover 32 and the side cover 33 are sewn. FIG. 3 shows a state where the trim cover 32 and the side cover 33 in a sewn state are removed from the pad 31. The side cover 33 is formed by molding a flexible resin. However, if the side cover 33 is formed using a single mold, the size of the side cover 33 becomes large, and the handling becomes difficult. Therefore, in this embodiment, as shown in FIG. 3, the side cover 33 is divided and formed into a left side cover 331, an upper side cover 332, and a right side cover 333, and these are overlapped at the end. It was set as the structure connected.

  In FIG. 4, the connection part of the left side cover 331 and the upper side cover 332 is shown enlarged. The front end portion 3311 of the left side surface side cover 331 and the front end portion 3321 of the upper surface side cover 332 are overlapped and stitched at a portion 34 to be connected. Since the side cover 33 is formed of a flexible resin, the side cover 33 can be stitched together with other members of the side cover 33 or other members by making the thickness appropriate. The thickness of the portion where the tip portion 3311 of the left side cover 331 and the tip portion 3321 of the upper side cover 332 are overlapped is the same as the thickness of the left side cover 331 and the upper side cover 332 near the overlapped portion. It is supposed to be. The connection between the upper side cover 332 and the right side cover 333 is the same.

  FIG. 5 shows a perspective view of the vicinity of the front end portion 3311 of the left side cover 331. Holes 33111 and 33112 are formed at two positions in the tip portion 3311 of the left side cover 331.

  FIG. 6 shows a cross-sectional view taken along the line BB including the holes 33111 and 33112. The cross-sectional shapes of the holes 33111 and 33112 are tapered such that the lower side is wider than the upper side.

  On the other hand, FIG. 7 shows a perspective view of the vicinity of the tip portion 3321 of the upper surface side cover 332. The leading end portion 3321 is set so that the thickness of the overlapping portion when overlapped with the leading end portion 3311 of the left side cover 331 is the same as the thickness of the top side cover 332 alone or the left side cover 331 alone. It is.

  FIG. 8 is a cross-sectional view taken along the line C-C of the front end portion 3321 of the upper surface side cover 332. In the tip portion 3321, reverse-tapered projections 3321 and 3322 having a diameter of the tip portion larger than the diameter of the root portion at positions corresponding to holes 33111 and 33112 formed in the tip portion 3311 of the left side cover 331. And are formed. The heights of the protrusions 3321 and 3322 are the same as the thickness of the tip end portion 3311 of the left side cover 331.

  In FIG. 9, the tip portion 3311 of the left side cover 331 and the tip portion 3321 of the upper side cover 332 are overlapped to form a protrusion 3321 formed on the tip portion 3311 on the upper side cover 332 side on the left side cover 331 side. Sectional drawing of the state fitted to the hole 33111 formed in the front-end | tip part 3321 is shown. Since the height of the protrusion 3321 and the thickness of the tip end portion 3311 of the left side cover 331 are the same, the tip end of the protrusion 3321 is in the same plane as the bottom surface of the left side cover 331. In this state, the portion indicated by the dotted line 34 is sewn so as to cross the projection 33211 fitted in the hole 33111.

  The protrusion 33211 has a shape with a narrow root and a thick tip, and the cross-sectional shape of the hole 33111 is also a shape corresponding to the shape of the protrusion 33211. As a result, once the protrusion 33211 is inserted into the hole 33111, it cannot be easily removed, and the temporarily fixed state can be reliably maintained.

  On the other hand, since the side cover 33 is formed of a flexible resin, if the protrusion 33211 and the hole 33111 are aligned and pressed strongly, the tip of the protrusion 33211 is deformed and the entrance of the hole 33111 becomes relatively narrow. It is possible to reach the relatively wide part in the back from the part where it is. Further, when the protrusion 3321 is inserted into the hole 33111 and the protrusion 33211 is pulled with a certain amount of force, the tip of the protrusion 3321 is deformed and comes out from the relatively narrow part of the entrance of the hole 33111 to the outside. Thus, the protrusion 33211 can be removed from the hole 33111.

  FIG. 10 shows a cross-sectional view of the stitched surface indicated by the dotted line 34 in FIG. Since the projections 33211 and 33212 of the tip end portion 3321 of the upper surface side cover 332 are fitted in the holes 33111 and 33112 of the tip end portion 3311 of the left side cover 331, the left side cover 331 is left during the stitching. There is no possibility that the position of the upper surface side cover 332 is shifted.

  Further, the height of the portion where the tip portion 3311 of the left side cover 331 and the tip portion 3321 of the upper side cover 332 are overlapped is the same as the height of the left side cover 331 alone and the upper side cover 332 alone. Therefore, the suturing operation can be performed smoothly and reliably.

  Similarly, for the upper side cover 332 and the right side cover 333, the projection formed on the tip portion of the upper side cover 332 is fitted into the hole formed on the tip portion of the right side cover 333. The overlapping portion between the tip portion of the cover 332 and the tip portion of the right side cover 333 is stitched. By suturing in this manner, there is no possibility that the upper surface side cover 332 and the right side surface side cover 333 are displaced during the suturing, and the height of the overlapped portion and the surrounding portion is the same. Work can be done smoothly.

  In the example described above, the example of the reverse taper shape is described for the shape of the protrusions (33211, 33212) formed on the tip portion of the upper surface side cover 332, but the present embodiment is not limited to this. However, it may be a shape that is not easily removed when fitted in the hole, or a combination with a hole that is difficult to remove.

  In this manner, the left side cover 331, the upper side cover 332, and the right side cover 333, which are separately formed, are sewn and integrated to form the side cover 33, and then the part circled in FIG. The side cover 33 and the trim cover 32 are stitched together.

  FIG. 11 shows an enlarged view of a circled portion in FIG. In FIG. 11, the end portion 3301 of the side cover 33 and the end portion 3201 of the trim cover 32 that are formed of a flexible resin are stitched together at a portion indicated by a dotted line 35.

  A procedure for stitching the end portion 3301 of the side cover 33 and the end portion 3201 of the trim cover 32 will be described with reference to FIGS. 12 and 13.

  First, as shown in FIG. 12, the end portion 3201 of the trim cover 32 turned upside down is placed on the front end portion 3301 of the side cover 33. Here, the trim cover 32 has a three-layer structure of a skin 321, a cover pad 322, and a back base cloth 323, and the back base cloth 323 is on the upper side in the state of FIG. 12. In this state, the end portion 3301 of the side cover 33 and the end portion 3201 of the trim cover 32 are stitched together at a position 35 using an industrial sewing machine. This stitching step is performed over the entire portion where the end portion 3301 of the trim cover 32 and the end portion 3201 of the side cover 33 are in contact with each other.

  When the stitching operation between the trim cover 32 and the side cover 33 is completed, the trim cover 32 that is turned upside down is then folded back from the stitched portion 35 so that the skin 321 of the trim cover 32 faces the front side as shown in FIG. Invert to be. The state in which the entire trim cover 32 is reversed in this way is shown in FIG.

  In this state, the trim cover 32 and the side cover 33 are stitched together and put on the urethane pad 31 as shown in FIG. 2, thereby completing the seat back 3 as shown in FIG.

  The cushion seat 2 is also subjected to the same process as the seat back 3 described above, and the cushion pad for the cushion seat is covered with a cover obtained by stitching together the trim cover for the cushion seat 2 and the side cover. Thus, the cushion sheet 2 can be completed.

The series of steps described above can be summarized as shown in FIG.
First, with respect to the side cover that is divided and molded, a protrusion formed on the side of the other side cover is inserted into a hole formed on an end portion on the side of one side cover, and the side covers are temporarily fixed (S1401). ). Next, the temporarily fixed side covers are sewn so as to cross a projection (for example, 33211) inserted into a hole (for example, 33111) to form a side cover assembly (S1402). The side cover 33 and the trim cover 32 are integrated together by stitching the completed side cover assembly 33 with the trim cover 32 turned over (S1403). Next, the trim cover 32 is folded back from the stitched portion and reversed (S1404). Finally, the seat back is completed by covering the urethane pad 31 of the seat back with the side cover 33 and the trim cover 32 integrated in this manner (S1405).

  According to the present embodiment, the side covers made of the flexible resin divided and molded can be relatively easily sewn and integrated in a temporarily fixed state so that their positions do not shift. The side cover can be manufactured at a relatively low cost. In addition, since it can be stitched relatively easily, the quality of the product of the integrated side cover can be stabilized.

  In the first embodiment, it will be described that the side covers are stitched together in a state where the protrusion 3321 is fitted into the hole 33111 and temporarily fixed with reference to FIGS. 9 and 10, and the process of S1402 is also performed in the flowchart of FIG. In the above, it has been described that the temporarily fixed side covers are stitched together.

  On the other hand, in the second embodiment, as a method of connecting the temporarily fixed side covers, instead of sewing the temporarily fixed side covers, the temporarily fixed side covers are fixed with an adhesive. I made it. In this case, an adhesive is applied in advance to or either one of the front end portion 3311 on the upper surface side cover 332 side to be temporarily fixed and the front end portion 3321 on the left side cover 331 side, and the protrusion 3321 is fitted into the hole 33111. In this state, the tip portions 3311 and 3321 may be pressed and bonded and fixed.

  In this case, in the flowchart illustrated in FIG. 14, the side covers are temporarily fixed in a state where the adhesive is applied to at least one side cover in S1401, and the temporarily fixed side covers in S1402 are sewn together. The step of forming the cover assembly may be performed by pressing the temporarily fixed side covers and fixing them with an adhesive.

  According to the present embodiment, the side covers made of the flexible resin divided and molded can be temporarily fixed so that their positions are not shifted and can be integrated relatively easily. It became possible to manufacture at low cost. In addition, since it can be integrated relatively easily, the quality of the integrated side cover product can be stabilized.

  In the first embodiment, it will be described that the side covers are stitched together in a state where the protrusion 3321 is fitted into the hole 33111 and temporarily fixed with reference to FIGS. 9 and 10, and the process of S1402 is also performed in the flowchart of FIG. In the above, it has been described that the temporarily fixed side covers are stitched together.

  On the other hand, in this embodiment, the reverse tapered protrusion 33211 does not easily come out of the hole 33111 formed in accordance with the side covers of S1401 temporarily attached to each other. By appropriately setting the number of combinations of the holes 33111, the step of sewing the side covers temporarily secured in S1402 was omitted.

  In this case, what is necessary is just to implement the process after S1403 by making the thing of the state which temporarily secured side covers of S1401 into a side cover assembly.

  According to the present embodiment, the side covers made of flexible resin that are divided and molded can be integrated relatively easily by temporarily fixing the side covers so that their positions do not shift, so the side covers can be made relatively inexpensive. It can be manufactured. Further, since it can be integrated relatively easily only by temporarily fixing, the product quality of the integrated side cover can be stabilized.

  The embodiment described above is for explaining an embodiment of the present invention, and the present invention is not limited to this. That is, the present invention includes those in which some of the configurations and steps described in the above embodiments are replaced with steps or means having functions equivalent to those described above, or those in which some of the substantive functions are omitted.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 2 ... Cushion seat 3 ... Seat back 4 ... Headrest 5 ... Side support 31 ... Urethane pad 32 ... Trim cover 33 ... Side cover 331 ... Left side cover 332 ... Upper side cover 333 ... Right side cover 3311 ... Left side side cover tip 3321 ... Upper side cover tip 33111, 33112 ... Hole 33211, 33212 ... Projection 34 ... Suture part

Claims (10)

A flexible cushion member, a trim cover that covers a surface of the flexible cushion member, and a flexible resin that covers a side surface of the flexible cushion member are connected by sewing the trim cover and the flexible resin. A vehicle seat having a configuration, wherein the flexible resin is formed by a member formed by dividing a shape covering a side surface of the cushion member into a plurality of pieces, and the members formed by dividing the plurality of pieces are sewn together. Alternatively, the vehicle seat is formed in a shape that covers the side surface of the cushion member by bonding and bonding.   2. The vehicle seat according to claim 1, wherein in a portion where the plurality of divided members are connected by stitching, one of the plurality of divided members is formed. The vehicle seat, wherein the formed protrusion is fitted into a hole formed in the other member among the members formed by dividing into a plurality of the members.   3. The vehicle seat according to claim 2, wherein the protrusion formed on one member among the plurality of members formed by being divided into a plurality has a reverse tapered shape. Vehicle seat.   A vehicle seat comprising a cushion seat on which a passenger sits, and a seat back on which a passenger seated on the cushion seat leans back, wherein the cushion seat and the seat back are each a flexible cushion member, A trim cover that covers a side of the surface of the flexible cushion member that contacts the seated passenger, and a resin member that is formed by molding a flexible resin that covers a side surface of the flexible cushion member. Is formed by joining divided members formed by molding a flexible resin divided into a plurality of pieces, and stitching or bonding the resin member formed by joining the divided members and the trim cover. A vehicle seat characterized by being connected.   5. The vehicle seat according to claim 4, wherein the resin member is fitted with a protrusion formed on one of the plurality of divided members into a hole formed on the other divided member. A vehicle seat characterized by being joined together.   5. The vehicle seat according to claim 4, wherein the resin member is fitted with a protrusion formed on one of the plurality of divided members into a hole formed on the other divided member. And a vehicle seat characterized by being joined by stitching including the fitted portion.   5. The vehicle seat according to claim 4, wherein the resin member is fitted with a protrusion formed on one of the plurality of divided members into a hole formed on the other divided member. A vehicle seat characterized in that the periphery of the fitted portion is joined with an adhesive. A method for manufacturing a vehicle seat, comprising:
A side cover assembly is formed by stitching or bonding a plurality of side covers of a vehicle seat divided and molded with a flexible resin,
Suture the trim cover upside down with respect to the side cover assembly,
Flip the trim cover stitched to the side cover assembly to make the skin of the trim cover the front side,
A vehicle seat manufacturing method, wherein the stitched side cover assembly and the trim cover are attached to a seat back with the skin of the trim cover facing up.   The method for manufacturing a vehicle seat according to claim 8, wherein the side cover assembly is formed by stitching or bonding a plurality of side covers of the vehicle seat that is divided and molded with a flexible resin. A protrusion formed on one divided side cover of the plurality of divided side covers is fitted into a hole formed on another divided side cover and joined, and the protrusion is attached to the hole. A method for manufacturing a vehicle seat, wherein the one divided side cover and the other divided side cover are stitched or bonded together in a state of being fitted and joined.   10. The method of manufacturing a vehicle seat according to claim 9, wherein in the step of forming a side cover assembly by stitching a plurality of side covers of the vehicle seat that is divided and molded with a flexible resin, the protrusions are formed. The one divided side cover and the other divided side cover are sewn or bonded together including the portion where the protrusion is fitted into the hole and joined in the state of being fitted and joined to the hole. A method for manufacturing a vehicle seat.

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