JP2006218153A - Automobile seat with back trim - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automobile seat with a back trim capable of easily covering the back part of a seat back, securing appearance quality and tactile quality, and suppressing the increase of weight while securing strength. <P>SOLUTION: The seat back 13 comprises a seat back frame 17 provided with a frame part 27 arranged along a peripheral edge, a back pad 19 assembled to the seat back frame 17, a trim cover 21 covering the outer surface of the back pad 19, and the back trim 23 covering the back part side. The back trim 23 comprises a trim frame body 39 made of a resin, for which a trim frame back part 33 arranged annularly along the frame part 27 of the seat back frame 17 and provided with an opening 35 on the inner side and trim frame side parts 37 arranged on both side part sides in a car width direction of the trim frame back part 33 are integrally molded, and is also provided with a trim sheet material 41 covering the opening 35 of the trim frame back part 33. On the side of the seat back frame 17 of the trim frame back part 33, a trim reinforcing member 43 arranged annularly along the trim frame back part 33 is fixed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle seat with a back trim in which a back side of a seat back is covered with a back trim formed in a predetermined shape in advance.

In the seat back of an automobile seat, a back pad that is molded in a three-dimensional shape with foamed resin or the like in advance is assembled to the seat back frame, and the outer surface is covered with a trim cover. The back portion of the seat back is also usually provided with back pads on both sides and the upper side, and the entire back portion is covered with a trim cover.
Thus, in order to cover the entire back portion of the seat back with the trim cover, it is necessary to sew the trim cover while aligning the trim cover. Therefore, it takes time to install the trim cover.
Therefore, there has been proposed one that covers the back surface of the seat back with a resin-made back cover that is previously molded into a predetermined shape using a resin or the like.
For example, in the following Patent Document 1, a back pad in which a wire member is insert-molded is assembled on the front side of the seat back frame, and a pre-molded resin back cover is assembled to the back pad by engaging the wire member. It has been.

In the case of covering the seat back using the preformed back cover in this way, the entire back portion of the seat back can be easily covered by simply fixing the back cover to the seat back, thereby simplifying the mounting work. Can do.
JP 2003-189975 A

However, since such a back cover is formed of a hard resin having no flexibility as compared with the trim cover, there is a problem that the appearance quality and the touch quality are inferior.
In addition, it is difficult to deform when subjected to various stresses from the outside, and it is easy to break, so the strength is ensured by forming a predetermined thickness on the entire surface of the back cover and arranging a large number of ribs. In addition, the back cover itself is liable to be heavy.

  Therefore, the present invention can easily cover the back portion of the seat back, and at the same time, can ensure the appearance quality and tactile quality, and can suppress the increase in weight while ensuring the strength. An object is to provide a vehicle seat with a trim.

  In a vehicle seat with a back trim according to claim 1 of the present invention, the vehicle has a seat back coupled to a seat cushion, and the seat back is arranged along the frame portion of the seat back frame. A trim frame main body formed integrally with a trim frame back portion that is annularly arranged and has an opening on the inside and a trim frame side portion that extends from both side portions of the trim frame back portion to the side portion of the seat back, A trim sheet material is provided to cover the opening at the back of the trim frame, and a trim reinforcing member arranged annularly along the opening is fixed to the seat back frame side of the back of the trim frame.

  In the vehicle seat with a back trim according to claim 2 of the present invention, the seat back is connected to the seat cushion via a reclining mechanism, and the trim reinforcing member is a lower portion of the trim frame back portion on the seat cushion side. A lower resin plate that is continuously fixed to the horizontal side portion and at least a part of the side vertical side portion on both sides in the vehicle width direction, and an upper resin plate that is continuously fixed to both ends of the lower resin plate It is comprised by becoming.

  In the automobile seat with a back trim according to claim 3 of the present invention, the trim reinforcing member is provided with a joint portion to the seat back frame.

  In the vehicle seat with a back trim according to claim 4 of the present invention, the width of the upper side in the side view of the trim frame side portion is formed to be narrower than the width of the lower side.

  In the automobile seat with a back trim according to a fifth aspect, the back pad covered with the trim cover is disposed above the back of the trim frame on the back side of the seat back frame.

  In the vehicle seat with a back trim according to claim 6, the airbag device is disposed on the side portion side of the seat back frame, and the trim frame side portion of the back trim overlaps at least a part of the opening / closing portion of the airbag device. And the airbag of the airbag device bulges upward from the storage position in the deployed state.

  In the automobile seat with a back trim according to claim 7 of the present invention, the trim sheet material is configured to be sandwiched between the trim frame back portion and the trim reinforcing member.

  In the automobile seat with a back trim according to claim 8 of the present invention, the entire inner edge side circumference of the trim reinforcing member is arranged on the inner side from the opening edge of the back cover frame part and is configured to protrude to the back side. Has been.

In the invention according to claim 1, the back trim is arranged in a ring shape along the frame portion of the seat back frame and has a trim frame back portion having an opening on the inside, and the side of the seat back from both sides of the trim frame back portion. Since the trim frame body that is integrally formed with the trim frame side part that extends to the side of the part and the trim sheet material that covers the opening of the trim frame back are provided, the back trim is simply fixed to the back of the seat back. Therefore, the seat back frame can be easily covered without the need for troublesome mounting work such as sewing while aligning, and the seat back frame disposed near the surface on the back side of the seat back. While covering the frame with the resin trim frame main body, the wide hollow area inside the frame of the seat back frame can be covered with a soft trim sheet material. Easy to secure the quality.
In addition, since the trim sheet material is lightweight, easily deformable, and does not require reinforcement such as ribs, an increase in the weight of the back trim can be suppressed as compared to the case where the trim sheet material is covered. At the same time, a trim reinforcing member arranged in an annular shape along the opening is fixed to the seat back frame side of the trim frame back, so even if a large opening is provided in the resin trim frame body, the resin trim frame body The strength of can be secured. Therefore, it is possible to suppress an increase in weight while ensuring the strength of the back trim.

  In the invention according to claim 2, since the seat back is connected to the seat cushion via the reclining mechanism, the reclining mechanism can be tilted backward without causing strong interference with the seat cushion. In addition, the lower lateral side portion of the back trim on the seat cushion side tends to be linear in the vehicle width direction, and tends to be narrow in width, making it difficult to ensure the strength of the lower lateral side portion. However, since the trim reinforcing member has the lower lateral plate and the lower resin plate that is continuously fixed to the lateral longitudinal sides on both sides thereof, the strength of the lower resin plate is appropriately selected and the lower lateral plate is selected. It is easy to sufficiently reinforce the side portion, and at the same time, the remaining portion is composed of the upper resin plate that is separate from the lower resin plate, so that it is easy to prevent an increase in weight due to excessive reinforcement. Therefore, it is possible to easily secure the strength of the back trim while suppressing an increase in weight.

  In the invention according to claim 3, since the joint portion to the seat back frame is provided in the trim reinforcing member, various stresses are applied to the back trim attached to the seat back from the outside or the inside. Even when a load is applied to the joint portion of the trim reinforcing member, it is easier to prevent the resin trim frame body from being damaged than when the joint portion is provided in the resin trim frame body.

  In the invention according to claim 4, since the width of the upper side in the side view of the trim frame side portion is formed to be narrower than the width of the lower side, It is easy to ensure the strength on the lower side according to the width of the trim frame side portion, and at the same time, it is easy to ensure the appearance quality and tactile quality by narrowing the width on the upper side of the trim frame body.

  In the invention according to claim 5, since the back pad covered with the trim cover is disposed above the back of the trim frame on the back side of the seat back frame, the upper part in a side view of the side of the trim frame If the width of the side is narrower than the width of the lower side, the resin trim frame body can be smoothly formed into a shape that continues to the back side even if the slope is set to the optimum one. Easy to ensure tactile quality.

In the invention according to claim 6, since the trim frame side portion of the back trim is disposed at a position overlapping at least a part of the opening / closing portion of the airbag device, the opening / closing portion is opened when the airbag device is operated. As a result, the trim frame side portion of the back trim is pushed outward in the vehicle width direction, and a force in the expanding direction is applied to the trim frame side portion. This force is transmitted to the back of the trim frame where the opening of the back trim is provided, but the back of the trim frame is reinforced by the trim reinforcing member, so that the back trim is hardly damaged.
Moreover, the airbag is inflated upward from the storage position in the deployed state, and the width of the upper side in the side view of the trim frame side portion is formed to be narrower than the width of the lower side. When the airbag is deployed, the airbag is likely to inflate more quickly from the upper side of the trim frame side portion, and it is easy to ensure an appropriate operation of the airbag device.

  In the invention according to claim 7, since the trim sheet material is sandwiched between the trim frame back portion and the trim reinforcing member, a member for fixing the trim sheet material can be easily omitted, and the manufacture is easy. is there.

  In the invention according to claim 8, since the entire inner edge side circumference of the trim reinforcing member is disposed inside the opening edge of the back cover frame part and protrudes toward the back side, the trim sheet material and the trim frame It is difficult to produce a gap between the opening edge of the back portion, and an excellent appearance can be easily obtained.

Hereinafter, referring to the accompanying drawings, in the illustrated embodiment, as shown in FIG. 1 or 2, the automobile seat 10 includes a seat cushion 11 and a seat back 13, and the seat back 13 is a reclining mechanism 15. It is connected with the seat cushion 11 via.
As shown in FIGS. 1 and 2, the seat back 13 has a back pad 19 assembled to the seat back frame 17, and an outer surface of the back pad 19 exposed to the inside of the vehicle is covered with a trim cover 21 and a back portion. A wide range on the side is covered with a back trim 23. An airbag device 25 is disposed on the side of the seat back frame 17 on the outer side in the vehicle width direction, and at least a part of the airbag device 25 is covered with a back trim 23 from the outside.

The seat back frame 17 includes a frame portion 27 along the peripheral edge portion 13a of the seat back 10 in a rear view, and a horizontal rail bar 28 spanned between the inner sides of the frame portion 27, and through the reclining mechanism 15, The seat cushion 11 is connected to a frame (not shown).
The frame portion 27 is adjacent to the rear portion of the frame of the seat cushion 11 and is disposed in the vehicle width direction, and a pair of side portions that are joined to both ends of the under portion 27a in the vehicle width direction and extend parallel to each other. 27b and an upper portion 27c provided with a holder portion 29a of the headrest 29, which is joined between the top portions of the pair of side portions 27b.

The back part side of the under part 27a and the upper part 27c has a shape that does not curve in the front-rear direction, and the back part side of both side parts 27b has a shape that gradually curves from the seat cushion 11 side to the headrest 29 side and gradually to the back side. It has become.
The horizontal bar 28 is stretched between the side portions 27b, holds the support plate 31, and is elastically deformable on the back side. Therefore, the horizontal bar 28 and the support plate 31 are disposed on the front side of the edge portion 27e on the back side of the side portions 27b, and the hollow portion 40 is formed inside the frame portion 27.

  As shown in FIGS. 2 and 3, the back pad 19 is formed in advance in a three-dimensional shape using foamed resin or the like. The back pad 19 is assembled to the seat back frame 17, and the entire front side of the seat back 13 and It arrange | positions at the vehicle width direction both sides, and is arrange | positioned at the back part side of the upper part 27c of the seat back frame 17. As shown in FIG.

  The trim cover 21 is covered on the entire surface of the back pad 19 exposed in the vehicle in a state of being aligned with the back pad 19. The trim cover 21 is fixed to the seat back frame 17 or the back pad 19 by engaging portions 21b provided at a plurality of positions of the edge portion 21e of the predetermined alignment portion 21a.

  As shown in FIGS. 1 and 4, the back trim 23 covers a wide area on the side of the seat cushion 11 on both sides in the vehicle width direction of the seat back 13 and on the side of the seat cushion 11 on the back. A trim frame back portion 33 that is annularly arranged along the frame portion 27 of the frame 17, an opening 35 that is surrounded by the trim frame back portion 33, and an inner side of the trim frame back portion 33 on both sides in the vehicle width direction. The trim frame side portion 37 is disposed and extends from the trim frame back portion 33 to the side portion side of the seat back 13, and is integrated into a three-dimensional shape according to the shape of the seat back frame 17 by a resin material such as a thermoplastic resin. A molded resin trim frame main body 39 is provided. The opening 35 of the resin trim frame main body 39 is covered with a trim sheet material 41, and a substantially strip-shaped trim reinforcing member 43 is annularly arranged along the opening 35 on the seat back frame 17 side of the trim frame back 33. It is fixed.

  The trim frame back 33 includes an under part 27a, a pair of side parts 27b, and a lower side part 33a, a pair of side parts 33b, and an upper part 33c corresponding to the upper part 27c of the seat back frame 17. Have.

  The upper lateral side portion 33c is disposed so as to overlap the back portion side of the upper portion 27c, and has a shape in which the axis in the vehicle width direction does not curve back and forth in a portion corresponding to the shape on the back portion side of the upper portion 27c. The width of the upper portion 27c is formed wider than the other side portions 33a and 33b, the upper end edge 34d is disposed in contact with the lower portion of the back pad 19 covered with the trim cover 21, and the lower end edge 34c is formed on the upper portion. It is disposed on the side of the seat cushion 11 near the lower end edge 26c of 27c.

  The lower horizontal side portion 33a is disposed so as to overlap the back portion side of the under portion 27a, and has a shape in which the axis in the vehicle width direction does not curve back and forth in a portion corresponding to the shape of the back portion side of the under portion 27a. When the seat back 13 is tilted to the lowermost end on the back side by the reclining mechanism 15, the lower side edge 33 a is less likely to come into strong contact with the seat cushion 11, so the lower lateral side 33 a is formed narrower than the upper lateral side 33 c. Has been.

The side vertical side portion 33b is disposed so as to overlap the back portion side of the side portion 27b, and gradually curves backward from the seat cushion 11 side to the headrest 29 side corresponding to the shape of the back portion side of the side portion 27b. It has a shape.
The cross-sectional shapes in the width direction of the upper and lower horizontal side portions 33a and 33c and the side vertical side portion 33b each have an arc shape curved toward the front side.

  As shown in FIGS. 2 to 4, the trim frame side portion 37 of the resin trim frame main body 39 is continuously formed in a curved shape without providing a boundary portion from the trim frame back portion 33, and the headrest 29 in a side view. The width on the side is formed narrower than the width on the seat cushion 11 side. Therefore, the front edge 37e of the trim frame side portion 37 is disposed so that the upper side is inclined to the back side, and further, the front edge 37e to the upper end edge 34d of the upper lateral side portion 33c have a continuous curved shape. ing.

  Recess portions 45 in which the reclining mechanisms 15 can be arranged are provided in cutout shapes at the end portions of the trim frame side portions 37 on the seat cushion 11 side. Since the reclining mechanism 15 is disposed at both ends of the under portion 27 a of the seat back frame 17, the escape portion 45 is provided at a position corresponding to both ends of the lower horizontal side portion 33 a of the trim frame back portion 33. The width of the portion adjacent to the relief portion 45 of the trim frame back portion 33 is narrower than the width of the lower horizontal side portion 33a.

  The seat back 13 is provided with an airbag device 25 on one side which is the outer side of the vehicle. As shown in FIG. 3, when the airbag 25b of the accommodating portion 25a is inflated in this cross section, as shown in FIG. The entire opening / closing portion 25c to be opened is covered from the outside by the trim frame side portion 37 of the resin trim frame main body 39. In the airbag device 25, as shown in FIG. 2, the airbag 25b bulges upward from the accommodating portion 25a. In the figure, reference numeral 25d is an inflator, and 25f and 25g are mounting screws and nuts for fixing the airbag device 25 to the side portion 27b of the seat back frame 17 and for supporting the opening / closing portion 25c.

  As shown in FIGS. 4 and 5, a plurality of ribs 47 for reinforcement are provided integrally with the resin trim frame main body 39 on the seat back frame 17 side of the resin trim frame main body 39. The rib 47 is not provided on the trim frame side portion 37 that covers the airbag device 25 so as to have a strength that can be elastically deformed when the airbag 25b is deployed.

  The trim sheet material 41 disposed in the opening 35 of the resin trim frame main body 39 is made of a sheet material such as a cloth, a resin sheet, a composite sheet in which a foamed resin is laminated on a resin sheet, and leather. As shown in FIG. 5, the trim reinforcing member 43 attached in a ring shape along the trim frame back portion 33 and the front side of the resin trim frame main body 39 are mounted in a sandwiched state. The trim sheet material 41 covers a hollow portion 49 formed inside the frame portion 27 of the seat back frame 17.

  The trim reinforcing member 43 is continuously arranged around the opening 35, and is integrally formed in a substantially U shape on the seat cushion 11 side, and the lower resin plate 51 on the headrest 29 side. The upper resin plate 53 is integrally formed in a substantially U shape so as to be continuously disposed between both ends of the upper resin plate 53. The lower resin plate 51 and the upper resin plate 53 are made of the same resin as or different from the resin trim frame main body 39 according to a desired strength.

  The lower resin plate 51 continues from the seat cushion 11 side of one side vertical side portion 33b to the seat cushion 11 side of the other side vertical side portion 33b via the entire length of the lower horizontal side portion 33a. It arrange | positions and is also arrange | positioned continuously also in the site | part adjacent to the escape part 45 of the trim frame back part 33. FIG. The upper resin plate 53 is disposed in the remaining part, and from the headrest 29 side of one side vertical side portion 33b to the headrest 29 side of the other side vertical side portion 33b via the entire length of the upper horizontal side portion 33c. It is arranged continuously until. These are fixed to the trim frame back portion 33 in a state in which the continuous portions 51a, 53a provided at both ends are overlapped and continuous.

As shown in FIG. 5, the lower resin plate 51 and the upper resin plate 53 are arranged such that a plurality of fixing protrusions 33 d provided at predetermined intervals in the circumferential direction on the trim frame back portion 33 are provided at the tips of the lower resin plate 51 and the upper resin plate. By being inserted into a plurality of fixing holes 51b, 53b provided in the plate 53 and melted, the members are joined by heat caulking.
In the fixed state, as shown in FIG. 3, the inner edge sides 51e and 53e of the lower resin plate 51 and the upper resin plate 53 are arranged on the inner side of the inner edge 33e of the opening 35 of the trim frame back 33 over the entire circumference. Projecting portions 51f and 53f projecting to the back side are formed over the entire circumference.
Therefore, when the lower resin plate 51 and the upper resin plate 53 are fixed to the trim frame back portion 33 with the trim sheet material 41 sandwiched therebetween, the trim sheet material 41 comes into close contact with the inner edge 33e of the opening 35 without a gap. .

  As shown in FIGS. 4 and 5, the back trim 23 has a hook 55 that can be locked from the inside to the upper lateral side 33 c of the resin trim frame main body 39 and to the lower end of the upper portion 27 c of the seat back frame 17. And a resin fitting screw 57 is mounted on the lower resin plate 51. The side vertical side 33b of the resin trim frame main body 39 is provided with an insertion portion 17a that can be inserted and locked from the back side into the side portion 27b of the seat back frame 17 or the opening / closing portion 25c of the airbag device 25. It has been.

  In such a back trim 23, the hook 55 is engaged with the edge portion 26c of the upper portion 27c of the seat back frame 17, and the resin fitting screw 57 of the lower resin plate 51 is inserted into the seat while the insertion portion 17a is inserted. The back frame 17 can be mounted by being fitted into a fitting hole 27d provided in the under portion 27a.

  In the state where the back trim 23 is mounted, the upper end edge 34d of the upper horizontal side portion 33c of the resin trim frame main body 39 is disposed on the back side and is in contact with the back pad 19 covered with the trim cover 21. The front edge 37e of the trim frame side portion 37 is disposed on the side portion side and is in contact with the back pad 19 covered with the trim cover 21. Here, the back pad 19 covered with the trim cover 21 is disposed on the upper edge 34d of the upper lateral portion 33c and the front edge 37e of the trim frame side portion 37, and the upper edge 34d of the upper lateral portion 33c and the trim frame are arranged. Since the front edge 37e of the side portion 37 has a continuous and smooth curved shape, a design that is curvilinearly continuous is provided around the back trim 23 and exhibits an excellent appearance.

According to the automobile seat 10 provided with the seat cover as described above, the back trim 23 is annularly arranged along the frame portion 27 of the seat back frame 17, and the trim frame back portion 33 having the opening 35 on the inside, the seat Since the trim frame main body 39 integrally formed with the trim frame side portions 37 extending to both sides of the back frame 17 and the trim sheet material 41 covering the opening 35 of the trim frame back portion 33 are provided. As described above, the back portion of the seat back 13 can be easily covered only by attaching the back trim 23. For this reason, the operation of sewing while aligning is unnecessary, and the mounting operation is easy.
Furthermore, a wide range of hollow portions inside the frame portion 27 of the seat back frame 17 while covering the frame portion 27 of the seat back frame 17 disposed near the back side surface of the seat back 13 with the resin trim frame main body 39. 49 can be covered with the soft trim sheet material 41, and the trim sheet material 41 makes it easy to ensure the appearance quality and tactile quality.
Moreover, since the trim sheet material is lighter than the case where the hollow portion 49 is covered with the resin trim frame main body 39, it is easily deformable and does not require reinforcement over the entire surface, a back cover formed of a conventional resin, etc. It is easy to suppress the increase in the weight of the back trim 23. At the same time, even if the resin trim frame main body 39 is provided with a large opening 35, the trim reinforcing member 43 arranged annularly along the opening 35 is fixed to the seat back frame 17 side of the trim frame back 33. The strength of the resin trim frame main body 39 can be ensured.

In the vehicle seat 10, the seat back 13 is coupled to the seat cushion 11 via the reclining mechanism 15, and therefore, the back trim is provided to allow the seat back 13 to tilt backward without strongly contacting the seat cushion 11. The lower lateral side portion 33a on the side of the seat cushion 11 has a linear shape that does not curve back and forth in the vehicle width direction, and at the same time, the width is narrowed. However, since the lower resin plate 51 in which the lower horizontal side portion 33a and the side vertical side portions 33b on both sides thereof are continuous is fixed, for example, the thickness, shape, material, etc. of the lower resin plate 51 are adjusted. Thus, if the strength is appropriately selected, the strength of the lower lateral side portion 33a can be sufficiently ensured. At the same time, the remainder of the trim reinforcing member 43 is composed of the upper resin plate 53 that is a separate body from the lower resin plate 51, so that an increase in weight due to excessive reinforcement can be suppressed.
Here, since the lower resin plate 51 and the upper resin plate 53 are molded and fixed separately from the resin trim frame main body 39 with resin, when the lower resin plate 51 and the upper resin plate 53 are molded, When molding the thin resin trim frame main body 39, it is possible to make each molding defect difficult to occur.

  Moreover, since the resin fitting screw 57 for joining with the seat back frame 17 is provided in the trim reinforcement member 43, a stress acts on the back trim 23 attached to the seat back 13 from the outside, When stress is applied from the inside due to the deformation of the back pad 19 or the operation of the air bag and the stress is applied to the joint portion, compared to the case where the joint portion with the seat back frame 17 is provided on the resin trim frame main body 39 Thus, it is easy to prevent the resin trim frame main body 39 from being damaged.

Further, since the trim frame side portion 37 of the back trim 23 is disposed at a position overlapping at least a part of the opening / closing portion 25c of the airbag device 25, when the airbag device 25 is operated, the opening / closing portion 25c is opened to open the back trim. 23, the trim frame side portion 37 is pushed outward in the vehicle width direction, and a force in the expanding direction is applied to the trim frame side portion 37. This force is also transmitted to the trim frame back portion 33 provided with the opening 35 of the back trim 23, but the trim frame back portion 33 is reinforced by the trim reinforcing member 43, so that the back trim 23 is hardly damaged.
In particular, since the reclining mechanism 15 is provided, the lower horizontal side portion 33a of the trim frame back portion 33 is thin and the axis thereof is linearly formed. However, since it is reinforced by the lower resin plate 51, the airbag device 25 Even during operation, damage can be prevented.

In this vehicle seat, the airbag 25b bulges upward from the storage position, but the upper side width in the side view of the trim frame side portion 37 is formed to be narrower than the lower side width, Since the edge 37e is inclined, the airbag 25b can be easily deployed on the upper side, can be quickly inflated to the upper side of the trim frame side portion 37, and the operation of the airbag device 25 can be easily ensured. .
Further, if the width of the upper side of the trim frame side portion 37 is formed to be narrower than the width of the lower side, the strength of the lower side of the trim frame main body 39 that is easy for an occupant's foot or the like to come into contact with the width of the trim frame side portion 37. It is possible to ensure the appearance quality and tactile quality by narrowing the width of the upper side of the trim frame main body 39 at the same time.

  Here, since the back pad 19 covered with the trim cover 21 is disposed above the trim frame back portion 33 on the back side of the seat back frame 17, the width of the upper side in the side view of the trim frame side portion 37 is increased. When forming narrower than the width on the lower side, the resin trim frame body 39 can be formed smoothly and continuously on the back side even if the slope is set to an optimum value according to the airbag device 25. Appearance quality and tactile quality can be ensured.

  In the automobile seat 10, the trim sheet material 41 is sandwiched between the trim frame back portion 33 and the trim reinforcing member 43, so that a member for fixing the trim sheet material 41 can be omitted and manufacturing is easy. .

  In addition, since the inner edge sides 51e and 53e of the trim reinforcing member 43 are disposed on the inner side of the opening 35 side inner edge 33e of the trim frame back portion 33 and project to the back portion side, the trim sheet material 41 is disposed on the trim frame back portion 33. It is difficult to produce a gap between the inner edge 33e of the opening 35 and it is easy to obtain excellent appearance quality.

In the above embodiment, the back trim is not limited to the above, and the shape and material of the resin trim frame main body, the trim sheet material, the reinforcing member, and the like are appropriately changed within the scope of the present invention. Is possible.
For example, in the above description, an example in which a pair of substantially U-shaped lower resin plate 51 and upper resin plate 53 is used as the reinforcing member has been described. However, the material, shape, number, and the like may be changed. It is also possible to use a ring integrally formed so as to surround the entire periphery of the opening 35 of the frame back portion 33.
Further, the shape of the seat back frame, the back pad, the trim cover, the airbag device, and the like are not limited to those described above. For example, the seat back frame can be appropriately changed as long as it includes a frame portion arranged along the periphery of the seat back, and the airbag device may be formed by a cloth such as a nonwoven fabric. .

It is a rear view of the seat back of the seat for cars concerning the present invention. It is a side view of the vehicle seat of FIG. It is AA sectional drawing of FIG. FIG. 2 is a front view of a back trim of the automobile seat in FIG. 1. It is a perspective view which expand | deploys and shows the structure of the back trim of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car seat 11 Seat cushion 12 Seat back 15 Reclining mechanism 17 Seat back frame 19 Back pad
DESCRIPTION OF SYMBOLS 21 Trim cover 23 Back trim 25 Airbag apparatus 27 Frame part 33 Trim frame back part 33a Lower horizontal side part 33b Side vertical side part 33c Upper side part 35 Opening 37 Trim frame side part 39 Resin trim frame main body 41 Trim sheet material 43 Trim reinforcing member 45 Escape part 51 Lower resin plate 53 Upper resin plate

Claims (8)

The seat back has a seat back coupled to the seat cushion, and the seat back includes a seat back frame having a frame portion arranged along a peripheral portion of the seat back, a back pad assembled to the seat back frame, and a back An automotive seat having a trim cover that covers the outer surface of the pad and a back trim that covers the back side,
The back trim is integrated with the back of the trim frame that is annularly arranged along the frame of the seat back frame and has an opening on the inside, and the side of the trim frame that extends from both sides of the back of the trim frame to the side of the seat back. And a trim sheet material that covers the opening of the trim frame back,
An automobile seat with a back trim, characterized in that a trim reinforcing member arranged in an annular shape along an opening is fixed to the seat back frame side of the trim frame back.   The seat back is connected to the seat cushion via a reclining mechanism, and the trim reinforcing member includes at least a lower lateral side portion on the seat cushion side at the back of the trim frame and side longitudinal side portions on both sides in the vehicle width direction. 2. The automobile with back trim according to claim 1, comprising a lower resin plate continuously fixed to a part and an upper resin plate continuously fixed between both ends of the lower resin plate. Sheet.   The vehicle seat with a back trim according to claim 1, wherein a joint portion to the seat back frame is provided in the trim reinforcing member.   4. The automobile seat with back trim according to claim 1, wherein the width of the upper side in a side view of the trim frame side part is formed to be narrower than the width of the lower side.   5. The automobile seat with a back trim according to claim 4, wherein the back pad covered with the trim cover is disposed above the back of the trim frame on the back side of the seat back frame.   The airbag device is disposed on the side portion side of the seat back frame, the trim frame side portion of the back trim is disposed at a position overlapping at least a part of the opening / closing portion of the airbag device, and the airbag of the airbag device is deployed. The automobile seat with a back trim according to claim 4 or 5, wherein the vehicle seat bulges upward from the storage position in a state.   The automobile seat with a back trim according to any one of claims 1 to 6, wherein the trim sheet material is sandwiched between the trim frame back portion and the trim reinforcing member. 8. The vehicle seat with a back trim according to claim 7, wherein the entire circumference of the inner edge side of the trim reinforcing member is disposed on the inner side of the opening edge of the back cover frame portion and protrudes to the back side.

Images