JPH0565660U - Retractable seat cushion structure - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the cushioning properties of the seat cushion without increasing the size and improve the comfort of the seated person. A substantially flat interdigital spring 38 capable of elastically supporting the seat pad 32 is stretched inside a seat cushion frame 14 by a support spring 42.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat cushion structure for a retractable seat that is folded and stored in a hangar when not in use, and is pulled out and used as needed.

[0002]

[Prior Art]

 For example, a retractable seat that can be stored in a predetermined hangar by folding the seat cushion and seat back when not in use is used as an auxiliary seat that can be added to the aisle on the side of a passenger seat such as a sightseeing bus or a fixed seat. It is provided.

A seat cushion of such a retractable seat is formed, for example, by using a seat cushion frame assembled in a substantially rectangular shape as a skeleton, and a flat fixing plate made of a veneer plate or the like closes the inside of the seat cushion frame. It is arranged and fixed so that Then, the seat pad made of an elastic body is placed on the fixed plate, and the seat cushion frame and the seat pad are vertically covered with the cover members such as the trim cover and the cover plate, respectively, and the hips and thighs of the occupant are seated. A seat cushion that elastically supports the above is formed.

A seat back that supports the upper body of a seated person is foldably attached to such a seat cushion, and one side of the seat back is hanged through a predetermined link mechanism or the like, for example. It is rotatably attached to the opening side of the. The retractable seat can be stored in the wardrobe by, for example, flipping up the seat cushion to the side with the folded seat back.

[0005]

[Problems to be solved by the device]

 By the way, in the known configuration, the fixing plate such as a veneer plate on which the seat pad is mounted is usually formed to have rigidity enough to withstand a load from a seated person. In other words, in the known configuration, sufficient elasticity is obtained because only the elasticity of the seat pad placed on the fixed plate elastically supports the seated person's hips, thighs, and the like. Absent.

Since the fixed plate itself has high rigidity, it is easy to give the seated person's buttocks and the like a feeling of bottoming, and the cushioning property of the seat cushion cannot be avoided. Therefore, the sitting comfort of the seated person is impaired, and the comfortability of the seated person is reduced.

Here, as a structure for enhancing the cushioning property of the seat cushion, for example, it is conceivable to increase the thickness of the seat pad to improve the cushioning property of the seat pad itself. However, in such a configuration, an increase in the overall thickness of the seat cushion is unavoidable, and the retractable seat becomes large in size, which is not preferable.

An object of the present invention is to provide a seat cushion structure for a retractable seat that improves the cushioning properties of the seat cushion without increasing the size and improves the comfort of the seated person.

[0009]

[Means for Solving the Problems]

 To achieve this object, according to the present invention, a substantially flat spring member capable of elastically supporting the seat pad is stretched in the seat frame.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, in a retractable seat cushion structure 10 according to the present invention, a retractable seat 12 includes a seat cushion 16 having a seat cushion frame 14 as a skeleton. The seat back 18 is foldable with respect to the seat cushion. The retractable seat 12 is configured to be retractable in the storage cabinet 20 by the seat cushion 16 being flipped up while the seat back 18 is folded.

As can be seen from FIG. 2, the hangar 20 is formed as a concave portion having a side opening on a side surface 22 of a fixed seat such as a sightseeing bus, and is stowed in the hangar by jumping to the side. As described above, the seat cushion 16 is rotatably attached to the opening side of the storage via a link mechanism (not shown) or the like.

The seat cushion 16 is formed, for example, by having a pair of protruding brackets 24 on the rear end upper surface, and the lower end of the seatback frame 26 of the seatback 18 is provided with stepped bolts. It is attached to the seat cushion 16 so as to be able to fall forward, that is, to be foldable, by a hinge 28 made of, for example. The seat back 18 is configured to be swingable in the front-back direction with respect to the seat cushion 16 between a seating position (an upright position) that secures a normal seated posture of a seated person and a forward tilted position when folded. ing.

In such a retractable seat 12, it is sufficient if the seat back 18 is foldable with respect to the seat cushion 16, and a configuration relating to folding is known, and the configuration itself is the purpose of the present invention. Therefore, it will not be described in detail.

As can be seen from FIG. 3 in addition to FIG. 1, the seat cushion frame 14 is assembled in a substantially rectangular shape from frame members 14a and 14b having a closed cross section, for example. As shown in FIG. 3, the insertion hole 30 formed on the side surface of the seat cushion frame 14 is for attaching the bracket 24 to the seat cushion frame, and is a bolt for attaching the insertion hole through the bracket. The bracket can be fixed to a predetermined position of the seat cushion frame by screwing.

As can be seen from FIG. 4 in addition to FIG. 1 and FIG. 3, a seat pad 32 that gives elasticity to the hips and thighs of the seated person is placed on the seat cushion frame 14. At the same time, the seat pad 16 is formed by covering the seat pad together with the seat cushion frame with predetermined cover members 34 and 36.

Here, as shown in FIGS. 1 and 3, according to the present invention, a substantially flat spring member 38 capable of supporting the seat pad 32 under elasticity is provided in the seat cushion frame 14, for example. , It is stretched between the left and right sides. As the spring member 38, for example, a comb-shaped spring called a deck spring in which a plurality of wires 38a are stretched in a frame having a predetermined shape can be used.

The interdigital spring (spring member) 38 is provided in the seat cushion frame by, for example, a plurality of support springs 42 whose one end is locked in a locking hole 40 on the upper surface of the left and right sides of the seat cushion frame 14. It has been installed. As the support spring 42, for example, a tension coil spring can be used.

In such a structure, the interdigital spring 38 is elastically supported in the vertical direction under the elasticity of the support spring 42. That is, according to such a configuration, the interdigital spring 38 is configured to elastically support the seat pad 32.

Then, as shown in FIGS. 1, 3, and 4, a seat pad 32 formed in a predetermined corresponding shape in advance is placed, for example, so as to cover the seat cushion frame 14. The seat pad 32 is formed from an elastic body that gives elasticity to a seated person, for example, in a shape having a recess 32a capable of accommodating the seat cushion frame 14 on the lower surface.

Here, in the present invention, for example, the protection member 44 that covers the interdigital spring 38 in a planar manner to prevent direct contact with the seat pad 32 is provided between the seat pad and the interdigital spring. Is intervened in. As the protection member 44, for example, a flat hard rubber sheet that can be deformed according to the deflection of the interdigital spring 38 due to the load of the seated person on the seat cushion 14 can be used.

According to this structure, the seat pad 32 and the interdigital spring 38 are separated from each other by the hard rubber sheet (protective member) 44, so that direct contact with each other can be reliably prevented. Therefore, even if the seat pad is repeatedly pressed in the direction of the interdigital spring under the load of the seated person, the seat pad will not be damaged by the contact with the interdigital spring 38, that is, the seat pad will not be broken, and the seat pad will not be damaged. The safety of can be secured.

As shown in FIGS. 1, 3 and 4, the upper and lower sides are covered with cover members 34 and 36, which are arranged above the seat pad 32 and below the seat cushion frame 14, respectively. The seat cushion 16 having good appearance quality is formed. The cover member 34 is formed in a bag shape capable of accommodating the seat pad 32, for example, as a trim cover made of a skin or the like.

On the other hand, the cover member 36 is formed of, for example, synthetic resin or steel plate as a cover plate capable of covering the seat cushion frame 14 and the seat pad 32 and the end of the trim cover.

Further, in the present invention, for example, a silencer 46 is arranged between the interdigital spring 38 and the cover plate (cover member) 36. As the silencer 46, for example, a thick cloth such as anti-wool felt material can be used. The silencer 46 is attached to the lower surface of the interdigital spring 38, for example.

In such a configuration, even if the interdigital spring 38 is largely bent due to the action of an excessive load from the seated person, the direct contact of the interdigital spring with the cover plate 36 is prevented by the silencer. Blocked by 46. Therefore, it is possible to reliably prevent the generation of abnormal noise due to the contact of the interdigital spring 38 with the cover plate 36.

Incidentally, reference numeral 48 in FIG. 4 is a slit through which the bracket 24 fixed to the seat cushion frame 14 is inserted.

As described above, according to the seat cushion structure 10 of the retractable seat of the present invention, the seat pad 32 is elastically supported by the interdigital spring 38 stretched in the seat cushion frame via the support spring 42. Has been done. In other words, in addition to the elasticity of the seat pad 32, the elasticity of the interdigital spring 38 and the support spring 42 is applied to the buttocks, thighs, etc. of the seated person, preventing the seated person's buttocks etc. from bottoming out. it can.

Therefore, the seat cushion 16 of the retractable seat 12 has sufficient cushioning properties, and the comfort of the seated person is surely improved.

Since the seat pad 32 is elastically supported by the interdigital spring 38 stretched and stretched in the seat cushion frame, the seat pad 32 is sufficiently thickened without increasing the thickness of the seat pad 32. You can secure a good cushioning property.

Therefore, the thickness of the seat cushion 14 can be sufficiently suppressed, and the upsizing of the retractable seat 12 can be sufficiently prevented.

Further, if the protective member 44 is interposed between the seat pad 32 and the interdigital spring 38, direct contact between the seat pad and the interdigital spring can be prevented, which results from the flexure of the interdigital spring. Pad breakage, that is, damage to the seat pad, can be reliably prevented. Therefore, the safety of the seat pad 32 can be ensured.

Further, by disposing the silencer 46 between the interdigital spring 38 and the cover plate 36, it is possible to prevent the interdigital spring from coming into contact with the cover plate due to the bending of the interdigital spring. Therefore, it is possible to reliably prevent the generation of abnormal noise due to the contact, without causing the occupant to feel uncomfortable, and also in this respect, the comfort of the occupant is sufficiently improved.

By providing the silencer 46, it is not necessary to provide a wide space between the interdigital spring 38 and the cover plate 36. Therefore, the thickness of the seat cushion 14 can be suppressed by one layer, and also in this respect, the size of the seat cushion can be sufficiently prevented from increasing.

Here, in the embodiment, a comb-shaped spring (deck spring) is used as the spring member 38, but it is sufficient if the seat pad 32 is elastically supported on a substantially flat surface, and is not limited to this. For example, the spring member may be composed of a plurality of S springs that are spaced apart at equal intervals.

However, if the interdigital spring 38 is stretched in the seat cushion frame as in the embodiment, the structure of the spring member itself is not complicated. Therefore, the spring member 38, that is, the entire retractable seat 12 can be sufficiently simplified in structure and can be improved in workability.

Further, although the protection member 44 is embodied as a hard rubber sheet, it is sufficient if the spring member 38 and the seat pad 32 are separated from each other to prevent direct contact with each other, and therefore the protection member 44 is limited to hard rubber. Alternatively, the protective member may be formed of, for example, soft rubber or thick cloth.

Further, the silencer 46 is embodied as a thick cloth such as anti-wool felt cloth, but it is sufficient if the direct contact of the interdigital spring 38 with the cover plate 36 is prevented, and therefore There is no limitation, and the silencer may be formed from other materials.

Further, the silencer 46 need only be arranged between the interdigital spring 38 and the cover plate 36, and thus may be fixed in advance to the upper surface of the cover plate.

In the present invention, the seat cushion structure 10 of the retractable seat that can be stored in the hangar is embodied, but the invention is not limited to this, and for example, the jumping position of the seat cushion is the storage position. A retractable seat that does not have a hangar is also included in this retractable seat.

Although the seat cushion structure of the retractable seat according to the present invention is optimal for the retractable seat to be mounted as a passenger seat, an auxiliary seat, etc. of a sightseeing bus, the present invention is not limited to this, and for example, The invention may be applied to other various retractable seats for automobiles, trains, airplanes and ships, and jump-up seats for movie theaters and theaters.

The above-described embodiments are for explaining the present invention, and do not limit the present invention in any way, and all the modifications and alterations made within the technical scope of the present invention are also applicable. Needless to say, it is included in the device.

[0043]

[Effect of the device]

 As described above, according to the seat cushion structure of the retractable seat according to the present invention, since the seat pad is elastically supported by the spring member, it is possible to reliably prevent the seated person's buttocks, thighs, etc. from bottoming. .. Therefore, the cushioning property of the seat cushion of the retractable seat is sufficiently improved, and the comfort of the seated person is improved.

Since the seat pad is elastically supported by the spring member stretched in the seat cushion frame, sufficient cushioning properties for the seat cushion can be obtained without increasing the thickness of the seat pad. Therefore, the thickness of the seat cushion can be sufficiently suppressed, and the upsizing of the retractable seat can be sufficiently prevented.

Also, if the interlocking spring stretched in the seat cushion frame by a plurality of support springs is used as the spring member, the structure of the spring member itself does not become complicated, so the spring member, that is, the retractable type. The overall structure of the seat is simplified and workability is improved.

Further, in the structure in which the protective member is interposed between the seat pad and the spring member, direct contact between the seat pad and the spring member can be prevented, so that the pad is broken due to the bending of the spring member, that is, the seat pad. It is possible to reliably prevent damage to the. Therefore, the safety of the seat pad can be secured.

Furthermore, by disposing the silencer between the spring member and the cover member, it is possible to prevent the spring member from coming into contact with the cover member due to the bending of the spring member. Therefore, it is possible to reliably prevent the generation of abnormal noise caused by the contact, without giving the seated person an unpleasant feeling, and also in this respect, the comfort of the seated person is sufficiently improved.

By providing the silencer, it is not necessary to provide a wide space between the spring member and the cover member. Therefore, the thickness of the seat cushion can be further suppressed, and also in this respect, the increase in size of the seat cushion can be sufficiently prevented.

[Brief description of drawings]

1 is a sectional view taken along the line AA of FIG. 2 in a seat cushion structure for a retractable seat according to the present invention.

FIG. 2 is a schematic perspective view of a retractable seat.

FIG. 3 is an exploded perspective view of a lower half portion of a seat cushion structure of a retractable seat.

FIG. 4 is an exploded perspective view of an upper half portion of a seat cushion structure of a retractable seat.

[Explanation of symbols]

 10 Seat cushion structure of retractable seat 12 Retractable seat 14 Seat cushion frame 16 Seat cushion 32 Seat pad 36 Cover plate (cover member) 38 Spring member (comb-shaped spring) 42 Support spring 44 Protective member (hard rubber sheet) 46 Silencer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Kubota 3-12-12 Matsubara-cho, Akishima-shi, Tokyo Inside Tachi-S Co., Ltd.

Claims (4)

[Scope of utility model registration request] 1. A seat pad made of an elastic material is placed above a seat cushion frame forming a skeleton of the seat cushion, and a seat pad side and a lower surface side of the seat cushion frame are covered with predetermined cover members, respectively. In a seat cushion structure of a retractable seat formed so as to elastically support a seated person's hips and the like, a substantially flat spring member capable of supporting a seat pad is stretched in a seat cushion frame, and the elasticity of the spring member is reduced. The seat cushion structure of the retractable seat is characterized by supporting the seat pad. 2. The retractable seat according to claim 1, wherein the spring member is a comb-shaped spring stretched in the seat cushion frame by a plurality of support springs provided on at least one of the left and right sides and the front and rear sides. Seat cushion structure. 3. A protective member, which covers the upper surface of the spring member in a planar manner and is deformable according to the deflection of the spring member under the load from a seated person, is interposed between the spring member and the seat pad. A seat cushion structure for a retractable seat according to claim 1 or 2. 4. The seat of the retractable seat according to claim 1, further comprising a silencer interposed between the spring member and the cover member covering the lower surface of the seat cushion to prevent direct contact with each other. Cushion structure.