Delta Tooling Co., Ltd.

Kabushiki Kaisha Toyota Chuo Kenkyusho

Delta Kogyo Co., Ltd.

Bose Corporation

Kuraray Fastening Co., Ltd.

Seiji Kawasaki

Etsunori Fujita

Yumi Ogura

Yasuhide Takata

Kazuyoshi Chizuka

Eiji Sugimoto

Eiichi Yasuda

Minoru Nakamura

Katsuhiro Inoue

Ryuji Kuwano

Shigeyuki Kojima

Soichi Makita

Masahiro Kuromoto

Shunichi Doi

Shigeki Wagata

Yoshimi Enoki

Kazukata Takei

Toshiya Kushiyama

Seiya Yoshida

Shun'ichi Doi

Naoki Ochiai

Kiyokazu Sunami

Hideyuki Yamane

Hiroshi Nakahira

Akihito Asano

Masaki Nishino

Shigeru Maeda

Katsuya Ibaraki

Yuki Arita

Yuji Hattori

Hitoshi Fujita

Bradford Kyle Subat

Charles Oswald

Tobe Zetelmo Barksdale

Yutaka Sakamoto

Satoru Ono

Shinichiro Maeda

Yukitoshi Higashinaka

Hiroki Oshimo

Hiroki Honda

Tooru Tanokura

Takashi Kurashita

Atsushi Nishida

Kosuke Aoi

Ryoji Matsukawa

Shogo Inoue

Shigehiko Kaneko

Shusuke Takahashi

Tatsuya Motoie

Shuji Kasama

Etsuko Kato

Miho Kikusui

Katsutoshi Aratani

Koji Wakita

Yuta Hiramoto

A seat cushion includes a seat cushion base layer which biases two base support parts in directions approaching each other, and has base support part elastic members which are elastically deformed in an up-down direction, thereby causing the seat cushion to have a configuration having a high spring characteristic. In the seat cushion and the seat back, the seat cushion is configured to be set to be larger than the seat back regarding a range of connecting an origin, a maximum displacement point, and a maximum load point, and a ratio of an area of a range including an inward curve to an area of a range including an outward curve in a predetermined load-deflection characteristic.

Seat cushion for vehicle seat and vehicle seat

A surface fastener formed of a synthetic resin and in which a base with a 0.1 to 0.9 mm thickness and engagement element groups including engagement elements with a 0.2 to 0.8 mm protrusion height are integrally molded, and engagement element rows are composed of the plural engagement elements arranged in a row direction and each protruding independently. A cushioning member is covered with a covering member via the surface fastener. A resistance value of the surface fastener by itself as measured by a handle-o-meter method conforming to the JIS L 1096 E method is 80 to 150 g, whereas a load-deflection characteristic when a pressure is applied to an overlapping portion of the stacked surface fastener and cushioning member by a pressure plate with a 30 mm diameter approximates a similarly measured load-deflection characteristic of the cushioning member by itself.

Surface fastener, cushioning structure, and seat structure

To obtain an integrated foam-molded product whose manufacturing cost is reduced and which makes an effective use of a property of an integration target. Foaming heat generated at the time of the foaming of a polyurethane foam raw material, whose influence has been conventionally prevented by contriving a special measure, is positively used. The integration target is influenced by foaming heat generated at the time of the foaming of the polyurethane foam raw material in a mold, to thermally deform into a desired shape along a mold shape. Consequently, it is possible to mold the integration target into an arbitrary shape in a step of integrating the integration target with a polyurethane foam layer in the mold by integrated foaming, and therefore, there is no need to work the integration target to a state closer to a final shape in a step before it is disposed in the mold, which can simplify manufacturing steps and reduce manufacturing cost.

Manufacturing method of integrated foam-molded product

A seat slide device includes lower rails and upper rails both formed substantially symmetrical bilaterally across a center in a width direction, and lock mechanisms on both sides of the upper rails to be engaged with the lower rails to lock them. An entire structure combining the lower rails, the upper rails and the lock mechanisms is substantially symmetrical forward, backward, and bilaterally, and a force applied to the lower rails and the upper rails can be absorbed substantially evenly forward, backward, and left and right. Since the lock mechanisms have an elastic lock member in a substantially center part in a longitudinal direction, the lower rails and the upper rails are elastically deformable for reduction of a biased load at a time of locking, improvement in vibration absorption characteristic, and the like, and a plate thickness of each material can be made thinner than conventional for weight reduction.

Seat slide device

A seat suitable for sports type automobiles with a low hip point. An energy absorbing structure part provided in a cushion frame is constituted of a substantially square frame body including a front beam and a rear beam, and stringers bridged across them and provided separately from side frames. It is structured such that belt anchor attaching members are each provided between a coupling position to a vicinity of a rear portion of upper rails of sliders and a coupling position of the rear beam in the stringers. When an impact force of a predetermined value or higher is applied, the stringers deform to absorb the impact force and trusses are formed after the deformation, thereby enabling to sustain a further impact force which continues to be applied.

Vehicle seat

To enable an output sound of a speaker unit to be output as a surface sound source in a limited space. A three-dimensional knitted fabric is provided at a position substantially facing speaker units while being given tension in a surface direction. Since the tension is applied, a pair of ground knitted fabrics constituting the three-dimensional knitted fabric and a connecting yarn extending back and forth between the ground knitted fabrics vibrate due to their elastic action. In particular, string vibration is generated in the connecting yarn. Due to this vibration, output sounds of the speaker units are propagated in the surface direction of the three-dimensional knitted fabric, and as a result, the three-dimensional knitted fabric propagates and radiates acoustic waves of a surface sound source.

Acoustic device and headrest

A base net for a back is formed from a three-dimensional stereoscopic knit, and has a configuration in which seams for bringing a pair of ground knitted fabrics thereof to close to each other in a thickness direction are partially provided, predetermined preliminary compression is applied in the thickness direction by the seams, and thereby residual stress is generated in a surface direction (stretching direction). Therefore, stiffness is partially increased by partial improvement in residual stress, and consequently a human body with extreme roughness is supported by nearly uniform pressure. Thus, in spite of a simple configuration in which the seams are provided in desired regions, posture supportiveness and body pressure dispersiveness can be improved. Further, by arbitrarily adjusting the formation positions of the seams, the pressure distribution is adjusted, thereby making it possible to easily control the vibration mode to desired setting, and easily improve vibration absorbency.

Base net and seat structure

To provide a seat having a high cushioning property, excellent in a drainage property, and suitable for outdoor use. A belt-shaped support memberfor seat back is supported on an upper portion of a seat back frame, a belt-shaped support memberfor seat cushion having end portionsconnected to a front portion of a seat cushion frameis connected to a lower portion of the belt-shaped support memberfor seat back, and a base support memberis disposed on a seat cushion. A surface cushion layerwith which a cushioning part for seat back and a cushioning part for seat cushion are integrally formed is disposed by being supported on the upper portion of the seat back frameand the front portion of the seat cushion frame. The end portionsof the belt-shaped support memberfor seat cushion connected to the front portion of the seat cushion framework as a fulcrum for supporting a portion from the waist to the vicinity of the pelvis of a seated person, and an upper portion of the surface cushion layersupported on the upper portion of the seat back frameworks as a fulcrum for supporting a portion from the femoral region to the vicinity of the hip of the seated person.

Seat

A neck injury is improved with a structure having a lifting mechanism part only on one side. While a lifting driving part is provided on a side of one side frame, a coupling driving rod is coupled to a rotation center of a drive gear a driving link is disposed on a side of the other side frame, and the driving link is coupled to the coupling driving rod. A driving force in the lifting driving part operates on the side of one side frame having the drive gear, but on the side of the other side frame, the driving link rotates together with the drive gear via the coupling driving rod, so as to perform a lifting or lowering operation. The shape of a virtual square coupling contact points of the driving link, the side connectors, the coupling driving rod, and the drive gear does not collapse, and thus an external input is dispersed.

Lifter mechanism and vehicle seat

A predetermined component such as a recliner is attached to a long member in advance, and thereafter by bending the long member, a pair of side frames and an upper frame are integrally formed. Therefore, the recliner can be attached to the long member not bent yet and thus in a substantially flat state, and in addition, the pair of side frames and the upper frame can be integrally formed, which does not require labor and contributes to a reduction in manufacturing cost. Moreover, by adjusting a position where the bending is performed, it is possible to manufacture seat frame structures different in dimension even if the long members not bent yet have the same length, and from this viewpoint as well, it is possible to reduce labor and manufacturing cost.

Manufacturing method for seat frame structure

There is provided a headrest with speakers capable of exhibiting an excellent sound effect. The headrest with speakers includes: a headrest frame; a pair of left and right enclosures supported by the headrest frame; speaker units supported in the enclosures respectively; and a headrest cushion member supported by the headrest frame to support a head, the headrest cushion member including: a net member having a pair of left and right acoustically transparent parts at places substantially facing the respective speaker units; and soundproof parts disposed between the pair of left and right acoustically transparent parts in the net member and between the pair of left and right enclosures respectively.

Headrest with speakers and method for manufacturing headrest cushion member

A vehicle seat suitable for weight reduction. A left and right side frames constituting a cushion frame unit are constituted of plate-shaped frames which are long in a forward and backward direction and formed of a thin material made of metal with a predetermined thickness or less, a plurality of beams are bridged across the side frames, and moreover, one or both of the side frames is or are supported on a seat slide device via a truss support part. In other words, the side frames disposed in a direction substantially orthogonal to the plurality of beams serve the role of stringers, and as a result, rigidity in the forward and backward direction of the side frames in particular is high rigidity of a predetermined value or more even if they are made of a thin material, and they can be reduced in weight.

A cushion member includes an intermediate layer, and an upper layer and lower layer stacked and fixed thereto. The cushion member is fixed to a frame by bending an end part of the cushion member so that the upper layer comes to the front side and the lower layer comes to the back side. The intermediate layer is subjected to shear force and the upper layer and the lower layer are subjected to compressive and tensile stress. With the spring characteristic of the intermediate layer, residual stress of the tension and compression is applied to the upper and lower layers from the intermediate layer. Thus, the cushion member can have a restoring property, generation of creases during no load application can be reduced, permanent setting is made less likely, and a compression characteristic in the thickness direction is increased.

Cushion member and seat structure

A vehicle seat includes a tension structure extended on a back frame with a configuration in which a natural frequency in the right-and-left direction of the back frame is set lower than the natural frequency in the front-and-rear direction. Thereby, the structure can easily deflect in the right-and-left direction. Therefore, since an impact load larger than a predetermined level inputted in the front-and-rear direction due to front-and-rear/pitching vibration or a rear collision and the like becomes a force of deflecting the back frame in the right-and-left direction, the vibration/impact energy is consumed by that, and moreover, rearward displacement of the back frame consumes vibration/impact energy. Thus, absorbing performances of the vibration/impact energy are higher than before.

To achieve weight reduction while providing elasticity sufficient in a cushioning member for a vehicle seat, an elastic member made of expanded resin beads includes an elastic covering material having stretching properties stuck to an outer face of an expanded bead body. Therefore, when the elastic member made of expanded resin beads is bent or compressed, the respective beads themselves configuring the expanded bead body are elastically deformed according to stretching or compressing of the elastic covering material, and since the elastic deformation is not such deformation that a gap between beads of the expanded bead body largely expands, a crack occurring between beads or permanent deformation does not occur so that bending or compressing becomes possible. Accordingly, the elastic member made of expanded resin beads is suitable as a cushioning member utilizing an elastic recovering force in a bending direction and a thickness direction thereof.

Elastic member made of expanded resin beads, laminated elastic structural body, and seat structure

Growing community of inventors

Hiroshima, Japan

Seiji Kawasaki