JP6879096B2 - Vehicle seat - Google Patents

Description

The present disclosure relates to vehicle seats, and more particularly to vehicle seats installed in vehicles such as automobiles.

Of the vehicle seats installed in automobiles, in vehicle seats other than the vehicle seats installed in the last row, a cushioning member is generally arranged on the rear surface of the seat back of the vehicle seat. .. This is to fix the back frame, various mechanical parts, electronic parts, wire harness (hereinafter, simply referred to as harness), the clip for fixing the harness, and the back cover that form the skeleton inside the seat back. This is because relatively hard members such as fixtures for the vehicle are arranged, and the cushioning member is provided to protect the occupants in the rear row from these members.

Usually, in a vehicle seat, a back pad made of a foam or the like is put on the back frame in order to ensure a good seating feeling for the occupant. The back pad is arranged on the front side of the seat back that defines the backrest surface, and a part of the back pad extends toward the rear surface side of the seat back. The rear wall portion of the back pad, which is an extended portion, is configured to mainly cover the outer peripheral portion of the rear surface of the back frame.

Here, an opening is provided in the center of the rear wall portion of the back pad. This opening is for allowing the back pad to be easily attached to the back frame, and for easily repairing or replacing various parts arranged inside the seat back. It is for making it possible. Therefore, the above-mentioned cushioning member is mainly provided in the portion where the opening of the back pad is located.

As a document in which a vehicle seat provided with the above-mentioned cushioning member is disclosed, for example, Japanese Patent Application Laid-Open No. 8-299101 (Patent Document 1). In the vehicle seat disclosed in Patent Document 1, a protective projection made of foam is locally provided on the rear surface of the felt material layer which is a base layer for foam molding the back pad. The protective projectile is configured to cover the rear surface of a fixture (eg, a C-ring, etc.) for fixing the back cover to the back pad.

However, when this configuration is adopted, although it is possible to protect the occupants in the rear row from the fixture of the back cover, other members arranged behind the back pad (for example, the portion excluding the outer peripheral portion). It is not possible to protect the occupants in the back row from the back frame, various mechanical parts, electronic parts, harnesses, clips for fixing the harnesses, etc.).

Therefore, in recent years, it has been generally practiced to use a relatively thick non-woven fabric as the above-mentioned cushioning member and to assemble the non-woven fabric on the inner surface of the back cover by sewing or the like. With this configuration, the cushioning member is arranged on the rear side of the various members arranged inside the seat back, so that it is possible to protect the occupants in the rear row from all these members. become.

Japanese Unexamined Patent Publication No. 8-299101

However, since the non-woven fabric as the cushioning member described above is harder than the back cover, when it is directly attached to the inner surface of the back cover, the outline of the non-woven fabric appears on the back cover. There is a problem that the aesthetic appearance of the vehicle seat is spoiled.

Therefore, in the past, the cushioning member was not directly attached to the back cover, but a relatively flexible cotton cloth or the like was sewn around the cushioning member, and the cotton cloth or the like was further sewn to the back cover. By assembling with or the like (that is, by assembling the cushioning member and the back cover so as to bridge with a cotton cloth or the like), the aesthetic appearance of the vehicle seat is not spoiled.

However, when such an assembling structure of the cushioning member is adopted, not only the number of parts increases (that is, a cotton cloth or the like for bridging is required separately), but also the assembling work is complicated. As a result, the manufacturing cost increases significantly.

Therefore, the present disclosure solves the above-mentioned problems, and provides a vehicle seat that can sufficiently enhance the safety of the occupants in the rear row and can be easily manufactured without spoiling the aesthetic appearance. With the goal.

The vehicle seat according to the present disclosure includes a seat cushion having a seating surface on which the occupant can sit on the upper surface, and a seat back having a backrest surface on which the occupant can lean on the back. The seat back is interposed between the back frame forming the skeleton of the seat back, the back pad covered with the back frame, the back cover covered with the back pad, and the back frame and the back pad. It has a mounted abnormal noise generation prevention member. The noise generation prevention member has a rear covering portion that covers the rear surface of the back frame, and the back pad is addressed to the rear surface of the back frame via the rear covering portion and has an opening. Has a rear wall portion provided with. The seat back further has a cushioning member attached to the rear covering portion of the portion facing the opening.

With this configuration, the cushioning member is assembled to the rear covering portion of the noise generation prevention member instead of the back cover, so that the number of parts can be reduced and the cushioning member can be reduced without spoiling the aesthetic appearance of the vehicle seat. It will be possible to facilitate the assembly work of. Further, the rear covering portion of the abnormal noise generation prevention member is arranged on the rear side of the back frame forming the skeleton of the seat back, and other relatively hard members (for example, the back) arranged inside the seat back. Since it is basically placed on the rear side of various mechanical parts other than the frame, electronic parts, harnesses, clips, etc.), the rear surface of these members is covered by the cushioning member, and the occupants in the back row It is possible to sufficiently enhance safety. Therefore, by adopting the above configuration, it is possible to obtain a vehicle seat that can sufficiently enhance the safety of the occupants in the rear row and can be easily manufactured without spoiling the aesthetic appearance.

In the vehicle sheet based on the present disclosure, it is preferable that the cushioning member is welded to the rear covering portion.

By welding the cushioning member to the rear covering portion of the abnormal noise generation preventing member in this way, the cushioning member can be easily assembled to the abnormal noise generation preventing member without requiring complicated assembling work such as sewing. Can be done.

In the vehicle sheet based on the present disclosure, it is preferable that the cushioning member is attached to the outer surface or the inner surface of the rear covering portion.

With this configuration, the rear surface of the other relatively hard member arranged inside the back frame or seat back described above is surely covered by the rear covering portion of the noise generation prevention member. , The safety of the occupants in the back row can be sufficiently improved.

In the vehicle seat based on the present disclosure, it is preferable that the abnormal noise generation prevention member has a bag-like shape including the back frame.

With this configuration, the rear surface of other relatively hard members arranged inside the back frame or seat back can be easily performed by covering the back frame with a bag-shaped noise generation prevention member. However, since the cushioning member is covered by the rear covering portion of the abnormal noise generation preventing member to which the cushioning member is assembled, the assembling work is further facilitated.

In the vehicle sheet based on the present disclosure, the noise generation prevention member is made of a fiber orthogonal laminated non-woven fabric or an ethylene-based material member, and the cushioning member is made of a non-woven fabric. It is preferable to have.

With this configuration, it is possible to reliably prevent the generation of abnormal noise that may occur when the back frame and other relatively hard members rub against each other, and to sufficiently enhance the safety of the occupants in the rear row. be able to.

Based on the present disclosure, it becomes possible to provide a vehicle seat that can sufficiently enhance the safety of the occupants in the back row and can be easily manufactured without spoiling the aesthetic appearance.

It is a schematic perspective view of the vehicle seat in an embodiment. It is a schematic cross-sectional view of the seat back shown in FIG. It is the schematic perspective view which looked at the back frame shown in FIG. 2 from the rear side diagonally upper left. It is an exploded perspective view which shows the assembly structure of the seat back shown in FIG. It is a schematic rear view of the abnormal noise generation prevention member in a state where a cushioning member is assembled. It is a schematic cross-sectional view of the seat back of the vehicle seat which concerns on 1st modification. It is a schematic cross-sectional view of the seat back of the vehicle seat which concerns on the 2nd modification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments shown below exemplify a case where the present invention is applied to a vehicle seat configured as an automobile seat. In the embodiments shown below, the same or common parts are designated by the same reference numerals in the drawings, and the description thereof will not be repeated.

FIG. 1 is a schematic perspective view of a vehicle seat according to an embodiment. First, with reference to FIG. 1, a schematic configuration of the vehicle seat 1 according to the present embodiment will be described.

As shown in FIG. 1, the vehicle seat 1 mainly includes a seat cushion 2, a seat back 3, a headrest 4, and a shield 5. The seat cushion 2 has a seating surface 2a on its upper surface on which an occupant can sit, and the seat back 3 has a backrest surface 3a on its front surface on which an occupant can lean back. The headrest 4 is assembled on the upper part of the seat back 3, and the shield 5 is provided so as to cover the lower part of the seat cushion 2.

The vehicle seat 1 is installed in the vehicle so that the backrest surface 3a provided on the front surface of the seat back 3 faces the front side of the vehicle. The vehicle seat 1 can be used as a vehicle seat other than the vehicle seat installed in the last row. For example, in a vehicle having two rows of seats, it can be used as a driver's seat or a passenger seat. This can be used as a driver's seat, a passenger seat, or a second row of seats in a vehicle having a row of seats.

FIG. 2 is a schematic cross-sectional view of the seat back shown in FIG. 1 along the line II-II shown in FIG. 1, and FIG. 3 is a schematic perspective view of the back frame shown in FIG. 2 as viewed from diagonally above the rear left. It is a figure. Further, FIG. 4 is an exploded perspective view showing the seat back assembly structure shown in FIG. 1, and FIG. 5 shows an arrow V in FIG. 2 showing an abnormal noise generation prevention member in a state where the cushioning member is assembled. It is a schematic rear view seen from the direction. Hereinafter, the configuration of the seat back 3 of the vehicle seat 1 according to the present embodiment will be described in detail with reference to FIGS. 2 to 5.

As shown in FIGS. 2 and 4, the seat back 3 mainly includes a back frame 10, an abnormal noise generation preventing member 20, a back pad 30, a back cover 40, and a cushioning member 50. Although not shown here, the seat back 3 further includes various mechanical parts and electronic parts (typically, various motors and control units, and brackets for fixing these to the back frame 10. Etc.), a harness, a clip for fixing the harness, a fixture for fixing the back cover 40, and the like.

As shown in FIGS. 2 to 4, the back frame 10 forms the skeleton of the seat back 3, and mainly includes a pair of side frames 11, an upper pipe 12, a lower pipe 13, an upper panel 14, and a lower panel 15. Have. The pair of side frames 11, upper pipe 12, lower pipe 13, upper panel 14 and lower panel 15 are made of, for example, metal members, and these are combined in a frame shape to form a back frame 10.

The pair of side frames 11 are arranged so as to extend along the vertical direction on both sides in the seat width direction. The upper pipe 12 has a shape in which both ends thereof are bent, and both ends thereof are fixed to the pair of side frames 11 so as to bridge the upper ends of the pair of side frames 11. As a result, the portion of the upper pipe 12 excluding both ends extends along the seat width direction. The lower pipe 13 is fixed to the pair of side frames 11 so as to bridge the lower ends of the pair of side frames 11, and extends along the seat width direction.

The upper panel 14 is fixed to the upper pipe 12 so as to bridge both ends of the upper pipe 12, and extends along the seat width direction. The lower panel 15 is fixed to the pair of side frames 11 so as to bridge the lower ends of the pair of side frames 11, and extends along the seat width direction.

A support wire 16 having spring elasticity is stretched on the upper panel 14 and the lower panel 15, and a contour mat 17 is attached to the support wire 16. The contour mat 17 is made of a resin member having a higher rigidity than the back pad 30, and is surrounded by a pair of side frames 11, an upper pipe 12, and a lower pipe 13 by being supported by a support wire 16 as described above. It is located in the space. The support wire 16 and the contour mat 17 are for elastically holding the back of the occupant.

A pair of headrest supports 12a are provided on the upper pipe 12 except for both ends described above. The pair of headrest supports 12a is a portion for assembling the headrest 4 to the seat back 3, and supports the headrest 4 in a state where the headrest 4 is assembled to the seat back 3.

As shown in FIGS. 2 and 4, the abnormal noise generation prevention member 20 has a bag-like shape with an open lower end, and the back frame 10 is housed inside the back frame. It is covered with 10. More specifically, the above-mentioned various mechanical parts, electronic parts, harnesses, clips for fixing the harness, etc. housed in the seat back 3 are also inside the bag-shaped noise generation prevention member together with the back frame 10. Be housed.

The abnormal noise generation prevention member 20 generates abnormal noise when the back frame 10 and various mechanical parts and electronic parts described above, a harness, a clip for fixing the harness, and the like and the back pad 30 directly rub against each other. It is a member for preventing this, and is composed of, for example, a fiber orthogonal laminated non-woven fabric made of polyolefin or a member made of an ethylene-based material.

Here, the above-mentioned cushioning member 50 is assembled to the rear side covering portion 21 which is a portion of the abnormal noise generation preventing member 20 that covers the rear surface of the back frame 10. The cushioning member 50 is provided to protect the occupants in the rear row, and the details thereof will be described later.

On the other hand, the back pad 30 is covered with the back frame 10 (more strictly, the abnormal noise generation prevention member 20) so that the back frame 10 is housed inside the back frame 10 together with the abnormal noise generation prevention member 20. It is put on the back frame 10). As a result, most of the above-mentioned various mechanical parts, electronic parts, harnesses, clips for fixing the harness, etc. accommodated in the seat back 3 are also provided by the back pad 30 via the abnormal noise generation prevention member 20. It will be covered.

The back pad 30 is a member provided to ensure a good seating feeling for the occupant, and is made of, for example, a foam made of polyurethane or the like. In the present embodiment, the case where the back pad 30 is composed of only the foam and the back pad 30 is used is illustrated, but the back pad 30 separately has a base layer or the like for foam molding the foam. It may have a layer other than the base layer.

The back pad 30 is mainly arranged on the front side of the back frame 10, and a part of the back pad 30 is extended so that the back pad 30 is further formed with a rear wall portion 31. The rear wall portion 31 of the back pad 30 is configured to cover the outer peripheral portion of the rear surface of the back frame 10 (that is, the rear surface of the pair of side frames 11 and the rear surface of the upper pipe 12) via the abnormal noise generation prevention member 20. It is a thing. As a result, the back pad 30 has a substantially box-like shape.

The rear wall portion 31 of the back pad 30 is provided with an opening 31a. The opening 31a is for easily assembling the substantially box-shaped back pad 30 to the back frame 10, and repairs various parts arranged inside the seat back 3. It is also for making it easy to exchange and replace. The opening 31a is provided so as to expose a portion of the rear surface of the back frame 10 other than the above-mentioned outer peripheral portion.

Further, the back cover 40 includes the back frame 10 (more strictly, the abnormal noise generation prevention member 20 and the back cover 40) so that the back frame 10 is housed inside the back frame 10 together with the abnormal noise generation prevention member 20 and the back pad 30. The back pad 30 is put on the back frame 10). As a result, the various mechanical parts and electronic parts described above, the harness, the clip for fixing the harness, and the like accommodated in the seat back 3 are also back cover 40 via the abnormal noise generation prevention member 20, the back pad 30, and the like. Will be covered by.

The back cover 40 constitutes the decorative surface of the seat back 3, and is formed by sewing, for example, a sheet-like member made of genuine leather, fabric, or the like so as to have a bag-like shape. ..

The back cover 40 comprises a front cover 41 forming the outer peripheral portion of the front surface, the upper surface, the lower surface, the right side surface, the left side surface, and the rear surface of the seat back 3, and a rear portion excluding the outer peripheral portion of the rear surface of the seat back 3. It has a cover 42 and. The rear decorative portion 41a of the front cover 41, which is a portion constituting the outer peripheral portion of the rear surface of the seat back 3, is provided with a notched window portion 41b. The upper end edge of the rear cover 42 is assembled to the upper end of the rear decorative portion 41a of the front cover 41 by sewing or the like, so that the window portion 41b of the front cover 41 can be covered. ing. In the normal use state, the window portion 41b of the front cover 41 is covered with the rear cover 42.

Here, as described above, in the vehicle seat 1 of the present embodiment, as shown in FIGS. 2, 4 and 6, the cushioning member 50 is attached to the rear covering portion 21 of the abnormal noise generation preventing member 20. It is assembled. The cushioning member 50 is a part of the above-mentioned back frame 10 housed in the seat back 3, various mechanical parts and electronic parts, a harness, a clip for fixing the harness, and a fixing tool for fixing the back cover 40. The purpose is to protect the occupants in the rear row from these hard members by covering the rear surface of the relatively hard members such as the above.

The cushioning member 50 is made of a non-woven fabric or the like having a predetermined thickness, for example, typified by miscellaneous felt or the like. Further, as the cushioning member 50, a member in which, for example, a resin film layer or the like is formed on the surface of the above-mentioned non-woven fabric may be used.

The cushioning member 50 is assembled so as to cover the entire area of the rear covering portion 21 of the abnormal noise generation preventing member 20 that faces the opening 31a provided in the back pad 30. More specifically, the cushioning member 50 is fixed to the rear covering portion 21 so as to be overlapped with the outer surface of the rear covering portion 21 (that is, the main surface on the rear side in the front-rear direction of the seat).

Various joining methods such as welding, sewing, and adhesion can be used to fix the cushioning member 50 to the abnormal noise generation preventing member 20. Here, as described above, when the abnormal noise generation prevention member 20 is made of a fiber orthogonal laminated non-woven fabric made of polyolefin or a member of an ethylene-based material, and the cushioning member 50 is made of a non-woven fabric such as miscellaneous felt. , These can be fixed by welding.

In that case, as shown in FIG. 6, for example, by welding the outer peripheral portion of the cushioning member 50 and the abnormal noise generation prevention member 20 of the portion facing the outer peripheral portion, the welded portion 51 is formed on the outer peripheral portion of the cushioning member 50. It should be formed. By transferring the welding to the cushioning member 50 and fixing it to the noise generation prevention member 20, the cushioning member can be easily turned into the noise generation prevention member without the need for complicated assembly work such as sewing. Can be assembled.

With this configuration, the cushioning member 50 is assembled not to the back cover 40 but to the rear covering portion 21 of the noise generation prevention member 20, so that the number of parts is not spoiled by the appearance of the vehicle seat 1. And the work of assembling the cushioning member 50 can be facilitated.

Further, the rear covering portion 21 of the abnormal noise generation prevention member 20 is arranged on the rear side of the back frame 10 forming the skeleton of the seat back 3, and is arranged inside the seat back 3, which is relatively hard as described above. Since the members are arranged on the rear side of the members, the rear surface of these members is covered with the cushioning member 50, and the safety of the occupants in the rear row can be sufficiently enhanced.

Therefore, by using the vehicle seat 1 according to the present embodiment described above, the safety of the occupants in the rear row can be sufficiently enhanced and the vehicle seat can be easily manufactured without spoiling the aesthetic appearance. Can be.

FIG. 6 is a schematic cross-sectional view of the seat back of the vehicle seat according to the first modification based on the above-described embodiment. Hereinafter, the configuration of the seat back 3A of the vehicle seat according to the first modification will be described with reference to FIG.

As shown in FIG. 6, the vehicle seat according to the first modification has a seat back 3A having a configuration different from that of the seat back 3 in the above-described embodiment. The seat back 3A has basically the same configuration as the seat back 3 described above, and the configuration is different only in the shape of the rear covering portion 21 of the abnormal noise generation prevention member 20.

Specifically, the rear covering portion 21 of the abnormal noise generation preventing member 20 provided in the seat back 3A is provided with a notched portion 21a. The cutout portion 21a is provided in the center of the rear covering portion 21 and is covered with the cushioning member 50. That is, in the first modification, the cushioning member 50 is assembled to the rear covering portion 21 so as to close the missing portion 21a provided in the rear covering portion 21 of the abnormal noise generation preventing member 20. ..

Even in this configuration, as in the case of the above-described embodiment, the safety of the occupants in the rear row can be sufficiently enhanced, and the vehicle seat can be easily manufactured without spoiling the aesthetic appearance. Can be.

FIG. 7 is a schematic cross-sectional view of the seat back of the vehicle seat according to the second modification based on the above-described embodiment. Hereinafter, the configuration of the seat back 3B of the vehicle seat according to the second modification will be described with reference to FIG. 7.

As shown in FIG. 7, the vehicle seat according to the second modification includes a seat back 3B having a configuration different from that of the seat back 3 in the above-described embodiment. The seat back 3B has basically the same configuration as the seat back 3 described above, and the configuration is only at the assembly position of the cushioning member 50 with respect to the rear covering portion 21 of the abnormal noise generation prevention member 20. It's different.

Specifically, in the seat back 3B, the cushioning member 50 is placed on the rear covering portion 21 so as to be overlapped with the inner surface of the rear covering portion 21 (that is, the main surface on the front side in the front-rear direction of the seat). It is fixed. That is, a part of the above-mentioned back frame 10 housed in the seat back 3, various mechanical parts and electronic parts, a harness, a clip for fixing the harness, a fixing tool for fixing the back cover 40, and the like. Are all directly covered by the cushioning member 50 without the intervention of the abnormal noise generation preventing member 20.

Even in this configuration, as in the case of the above-described embodiment, the safety of the occupants in the rear row can be sufficiently enhanced, and the vehicle seat can be easily manufactured without spoiling the aesthetic appearance. Can be.

In the embodiment described above and the modified example thereof, the case where the cushioning member is arranged corresponding to the entire area of the opening provided in the rear wall portion of the back pad has been illustrated and described, but it is not always the case. The cushioning members need not be arranged in this way, and one or more cushioning members are locally provided so as to correspond to a predetermined area of the openings provided in the rear wall of the back pad. You may. However, even in that case, a part of the above-mentioned back frame housed in the seat back, various mechanical parts and electronic parts, a harness, a clip for fixing the harness, a fixture for fixing the back cover, etc. It is desirable that the rear surface be covered with one or more locally provided cushioning members.

Further, in the above-described embodiment and its modification, the case where the bag-shaped noise generation prevention member is configured to cover the back frame or the like has been illustrated and described, but such a case is not always the case. It is not necessary to use an abnormal noise generation preventing member having a shape, and any abnormal noise generation preventing member having a rear covering portion covering the rear surface of the back frame may be used.

Furthermore, the present invention can be applied not only to vehicle seats for automobiles but also to any vehicle seats such as ship, aircraft, and train seats.

As described above, the above-described embodiment disclosed this time is an example in all respects and is not restrictive. The technical scope of the present invention is defined by the scope of claims and includes all modifications within the meaning and scope equivalent to the description of the scope of claims.

1 Vehicle seat, 2 Seat cushion, 2a Seating surface, 3, 3A, 3B Seat back, 3a Backrest surface, 4 Headrest, 5 Shield, 10 Back frame, 11 Side frame, 12 Upper pipe, 12a Headrest support, 13 Lower pipe, 14 upper panel, 15 lower panel, 16 support wire, 17 contour mat, 20 abnormal noise prevention member, 21 rear covering part, 21a missing part, 30 back pad, 31 rear wall part, 31a opening, 40 back cover, 41 Front cover, 41a rear decorative part, 41b window part, 42 rear cover, 50 cushioning member, 51 welded part.

Claims (4)

A seat cushion with a seating surface on the upper surface that allows the occupant to sit,
It is equipped with a seat back that has a backrest surface on the front that allows the occupant to lean back.
The seat back is interposed between the back frame forming the skeleton of the seat back, the back pad covered with the back frame, the back cover covered with the back pad, and the back frame and the back pad. and a abnormal sound preventing member having a bag-like shape containing the instrumentation is Rutotomoni the back frame,
The noise generation prevention member has a rear covering portion that covers the rear surface of the back frame.
The back pad has a rear wall portion that is addressed to the rear surface of the back frame via the rear covering portion and is provided with an opening.
A seat for a vehicle, wherein the seat back further has a cushioning member assembled to the rear covering portion of a portion facing the opening. The vehicle seat according to claim 1, wherein the cushioning member is welded to the rear covering portion. The vehicle seat according to claim 1 or 2, wherein the cushioning member is assembled to the outer surface or the inner surface of the rear covering portion. The noise generation prevention member is made of a fiber orthogonal laminated non-woven fabric or a member made of an ethylene-based material.
The vehicle sheet according to any one of claims 1 to 3 , wherein the cushioning member is made of a non-woven fabric.

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