JP7473771B2 - Vehicle seat device - Google Patents

Vehicle seat device Download PDF

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JP7473771B2
JP7473771B2 JP2019102647A JP2019102647A JP7473771B2 JP 7473771 B2 JP7473771 B2 JP 7473771B2 JP 2019102647 A JP2019102647 A JP 2019102647A JP 2019102647 A JP2019102647 A JP 2019102647A JP 7473771 B2 JP7473771 B2 JP 7473771B2
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cover
seat cushion
vehicle
seat
rotating member
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JP2020196306A (en
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治希 望月
晃 三好
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TS Tech Co Ltd
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TS Tech Co Ltd
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Priority to JP2019102647A priority Critical patent/JP7473771B2/en
Application filed by TS Tech Co Ltd filed Critical TS Tech Co Ltd
Priority to EP24153950.1A priority patent/EP4335692A3/en
Priority to CN202080039331.XA priority patent/CN113891817A/en
Priority to US17/614,778 priority patent/US20220227264A1/en
Priority to CN202310941362.XA priority patent/CN116985682A/en
Priority to EP20814499.8A priority patent/EP3978308A4/en
Priority to PCT/JP2020/021399 priority patent/WO2020241841A1/en
Publication of JP2020196306A publication Critical patent/JP2020196306A/en
Priority to US18/354,236 priority patent/US12012019B2/en
Priority to JP2024063597A priority patent/JP2024083544A/en
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Description

本発明は、シートクッションを支持するシートクッションフレームが取付けられる回転部材ならびに当該回転部材を下方から回転可能に支持するベース部材を有する回転機構を備える車両用シート装置に関する。 The present invention relates to a vehicle seat device that includes a rotation mechanism having a rotating member to which a seat cushion frame that supports a seat cushion is attached, and a base member that rotatably supports the rotating member from below.

フロアに対してシートを回転可能とするための回転機構を備える車両用シート装置が、特許文献１等で知られている。 A vehicle seat device equipped with a rotation mechanism that allows the seat to be rotated relative to the floor is known from Patent Document 1, etc.

特開２０１０－１７３４９１号公報JP 2010-173491 A

ところでシートクッションの下方に配置される回転機構の作動を円滑化するために、回転機構内への異物の侵入は極力抑制されるべきであるが、上記特許文献１には、回転機構内への異物の侵入を抑制する構造は開示されていない。 However, in order to facilitate the operation of the rotating mechanism located below the seat cushion, the intrusion of foreign objects into the rotating mechanism should be prevented as much as possible, but the above-mentioned Patent Document 1 does not disclose a structure for preventing the intrusion of foreign objects into the rotating mechanism.

本発明は、かかる事情に鑑みてなされたものであり、回転機構内への異物の侵入を抑制可能とした車両用シート装置を提供することを目的とする。 The present invention was made in consideration of these circumstances, and aims to provide a vehicle seat device that can prevent foreign objects from entering the rotation mechanism.

上記目的を達成するために、本発明は、シートクッションを支持するシートクッションフレームが取付けられる回転部材ならびに当該回転部材を下方から回転可能に支持するベース部材を有する回転機構を備える車両用シート装置において、前記回転部材の上部外周の周方向に沿う少なくとも一部が、カバーで外側方から囲われ、前記シートクッションに座った乗員が車両前後方向前向きとなる状態で前記回転部材の上端部後端縁に、前記シートクッションの表皮が前記カバーの外面に接触しつつ連結されることを第１の特徴とする。 In order to achieve the above-mentioned object, the present invention has a first feature in that, in a vehicle seat device comprising a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a rotating mechanism having a base member that rotatably supports the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover , and when an occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, the cover of the seat cushion is connected to the upper rear edge of the rotating member while contacting the outer surface of the cover .

また本発明は、シートクッションを支持するシートクッションフレームが取付けられる回転部材ならびに当該回転部材を下方から回転可能に支持するベース部材を有する回転機構を備える車両用シート装置において、前記回転部材の上部外周の周方向に沿う少なくとも一部が、カバーで外側方から囲われ、前記カバーの外側面が、前記回転部材の外側方に膨らんだ円弧状に形成されることを第２の特徴とする。 Furthermore, the present invention has a second feature in that, in a vehicle seat device equipped with a rotating mechanism having a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a base member that rotatably supports the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, and the outer surface of the cover is formed in an arc shape that bulges outward from the outside of the rotating member .

本発明は、シートクッションを支持するシートクッションフレームが取付けられる回転部材ならびに当該回転部材を下方から回転可能に支持するベース部材を有する回転機構を備える車両用シート装置において、前記回転部材の上部外周の周方向に沿う少なくとも一部が、カバーで外側方から囲われ、前記シートクッションに座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材を後方から囲う固定カバー部材が、前記カバーの下方に固定配置され、前記シートクッションに座った乗員が車両前後方向前向きとなる状態で、前記固定カバー部材が、前記カバーの下部に相対摺動可能に接触するように形成されることを第３の特徴とする。 The third feature of the present invention is that in a vehicle seat device equipped with a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a rotating mechanism having a base member that rotatably supports the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, a fixed cover member that surrounds at least the base member from the rear when an occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, is fixedly positioned below the cover, and the fixed cover member is formed so as to be in relative slidable contact with the lower part of the cover when the occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle .

本発明はシートクッションを支持するシートクッションフレームが取付けられる回転部材ならびに当該回転部材を下方から回転可能に支持するベース部材を有する回転機構を備える車両用シート装置において、前記回転部材の上部外周の周方向に沿う少なくとも一部が、カバーで外側方から囲われ、前記シートクッションに座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材を後方から囲う固定カバー部材が、前記カバーの下方に固定配置され、前記サイドフレームを外側方から囲うサイドカバーの下端位置が、前記カバーの下端位置と同一に設定されることを第４の特徴とする。 The fourth feature of the present invention is that in a vehicle seat device equipped with a rotating mechanism having a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a base member rotatably supporting the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, a fixed cover member that surrounds at least the base member from the rear when an occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle is fixedly positioned below the cover, and the lower end position of a side cover that surrounds the side frame from the outside is set to be the same as the lower end position of the cover .

本発明は、第１、第３、第４の特徴の構成のいずれかに加えて、前記カバーの外側面が、前記回転部材の外側方に膨らんだ円弧状に形成されることを第５の特徴とする。 The present invention has a fifth feature in that, in addition to any one of the first, third, or fourth features, the outer surface of the cover is formed in an arc shape that bulges outward from the rotating member .

本発明は、第３または第４の特徴の構成に加えて、前記カバーが、前記シートクッションに座った乗員が車両前後方向前向きとなる状態では、前記回転部材の上部外周を後方から囲う位置に配置されることを第６の特徴とする。 A sixth feature of the present invention is that, in addition to the configuration of the third or fourth feature, the cover is positioned in a position that surrounds the upper outer periphery of the rotating member from behind when an occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle .

本発明は、第１、第２、第５の特徴の構成のいずれかに加えて、前記カバーが、前記シートクッションに座った乗員が車両前後方向前向きとなる状態では、前記回転部材の上部外周を後方から囲う位置に配置されることを第７の特徴とする。 A seventh feature of the present invention is that, in addition to any one of the configurations of the first , second, or fifth features , the cover is positioned in a position that surrounds the upper outer periphery of the rotating member from behind when an occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle .

本発明は、第１～第５、第７の特徴の構成のいずれかに加えて、前記シートクッションフレームが、直線状に延びるとともに前記回転部材に支持される一対のサイドフレームを有し、前記カバーがそれらのサイドフレームに取付けられることを第８の特徴とする。 The present invention has an eighth feature in that, in addition to any one of the configurations of the first to fifth and seventh features, the seat cushion frame has a pair of side frames extending linearly and supported by the rotating member, and the cover is attached to the side frames .

本発明は、第６の特徴の構成に加えて、前記シートクッションの表皮を延長して前記カバーが形成されることを第９の特徴とする。 The present invention has a ninth feature in that, in addition to the configuration of the sixth feature, the cover is formed by extending a skin of the seat cushion .

さらに本発明は、第４の特徴の構成に加えて、前記カバーが、一対の前記サイドカバーの少なくとも一方と一体に形成されることを第１０の特徴とする。なお、本発明でいう「囲われる」という概念には、全体的に囲われるもの以外に、部分的に囲われるものも含まれる。 In addition to the fourth feature, the present invention has a tenth feature in that the cover is integrally formed with at least one of the pair of side covers. Note that the concept of "enclosed" in the present invention includes not only something that is entirely surrounded, but also something that is partially surrounded.

本発明の第１～第４の特徴によれば、回転部材の上部外周の周方向に沿う少なくとも一部が外側方からカバーで囲われることにより、少なくともカバーで囲われている部位では異物が回転機構内に侵入することを抑制することができる。 According to the first to fourth features of the present invention, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, so that it is possible to prevent foreign matter from entering the rotating mechanism at least in the area surrounded by the cover.

しかも本発明の第１の特徴によれば、シートクッションに座った乗員が車両前後方向前向きとなる状態での回転部材の上端部後端縁にシートクッションの表皮が連結され、しかも表皮がカバーの外面に接触するので、カバーの上部をシートクッションの表皮に連接することができ、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構への侵入をより効果的に抑制することができる。 Furthermore , according to the first feature of the present invention, the seat cushion cover is connected to the rear edge of the upper end of the rotating member when the occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, and the cover contacts the outer surface of the cover, so that the upper part of the cover can be connected to the seat cushion cover, and the intrusion of foreign objects into the rotating mechanism from the rear passenger seat side when the driver's seat or passenger seat is facing forward can be more effectively prevented.

また本発明の第２および第５の特徴によれば、カバーの外側面が回転部材の外側方に膨らんだ円弧状であるので、シートとともにカバーが回転する際に、車室内のフロア上にある荷物等とカバーが接触したとしてもカバーひいてはシートの円滑な回転を実現することができる。 In addition, according to the second and fifth features of the present invention, the outer surface of the cover is arc-shaped and bulges outward from the rotating member, so that when the cover rotates together with the seat, even if the cover comes into contact with luggage or the like on the floor inside the vehicle cabin, the cover and therefore the seat can rotate smoothly .

また本発明の第３の特徴によれば、カバーの下方に、シートクッションに座った乗員が車両前後方向前向きとなる状態で少なくともベース部材を後方から囲う固定カバー部材が固定配置されるので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構への侵入を抑制することができる。また、固定カバー部材がカバーの下部に相対摺動可能に接触するので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構への侵入をより効果的に抑制することができる。 According to a third aspect of the present invention, a fixed cover member is fixedly disposed below the cover to surround at least the base member from the rear when an occupant sitting on the seat cushion faces forward in the vehicle front-rear direction, so that it is possible to prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces forward. Also, since the fixed cover member is in relatively slidable contact with the lower part of the cover, it is possible to more effectively prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces forward.

本発明の第４の特徴によれば、カバーの下方に、シートクッションに座った乗員が車両前後方向前向きとなる状態で少なくともベース部材を後方から囲う固定カバー部材が固定配置されるので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構への侵入を抑制することができる。また、サイドカバーの下端位置がカバーの下端位置と同一であることによって、運転席や助手席が車幅方向に向いた状態での後方の同乗者席側からの異物の回転機構への侵入を抑制することができる。 According to a fourth aspect of the present invention, a fixed cover member that surrounds at least the base member from the rear when an occupant sitting on the seat cushion faces forward in the vehicle longitudinal direction is fixedly disposed below the cover, so that it is possible to prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces forward. Also, since the lower end position of the side cover is the same as the lower end position of the cover, it is possible to prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces in the vehicle width direction.

本発明の第６および第７の特徴によれば、シートクッションに座った乗員が車両前後方向前向きとなる状態ではカバーが回転部材の上部外周を後方から覆うので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構への侵入を抑制することができる。 According to the sixth and seventh features of the present invention, when an occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, the cover covers the upper outer periphery of the rotating member from the rear , thereby preventing foreign objects from entering the rotating mechanism from the rear passenger seat side when the driver's seat or passenger seat is facing forward.

本発明の第８の特徴によれば、シートクッションフレームが有する一対のサイドフレームにカバーが取付けられるので、簡単な構造でカバーをシートとともに回転させるようにすることができる。 According to the eighth aspect of the present invention, the cover is attached to the pair of side frames of the seat cushion frame, so that the cover can be rotated together with the seat with a simple structure .

本発明の第９の特徴によれば、シートクッションの表皮でカバーが形成されるので、異物が回転機構内に侵入することを抑制するにあたって部品点数が増大するのを回避することができる。 According to the ninth aspect of the present invention, since the cover is formed from the surface of the seat cushion, it is possible to prevent an increase in the number of parts when preventing foreign matter from entering the rotating mechanism.

さらに本発明の第１０の特徴によれば、カバーが、一対のサイドカバーの少なくとも一方と一体に形成されるので、カバーの配設による部品点数の増大を避けるととカバーの組付けを容易とすることができる。 Furthermore, according to the tenth feature of the present invention, the cover is formed integrally with at least one of the pair of side covers, which avoids an increase in the number of parts due to the arrangement of the cover and makes it easier to assemble the cover.

第１の実施の形態の車両用シート装置の斜視図である。1 is a perspective view of a vehicle seat device according to a first embodiment; 図１の２矢視方向から見た斜視図である。FIG. 2 is a perspective view seen from the direction of an arrow 2 in FIG. 1 . 図１からシートクッション、シートバックおよびサイドカバーを除いた状態での斜視図である。FIG. 2 is a perspective view of the vehicle shown in FIG. 1 with a seat cushion, a seat back, and a side cover removed. スライドレールおよび回転機構の一部を示す断面図であって図５の４－４線に沿う断面図である。6 is a cross-sectional view showing a part of the slide rail and the rotation mechanism, taken along line 4-4 in FIG. 5. スライドレールおよび回転機構を図４の５矢視方向から見た図である。5 is a view of the slide rail and the rotation mechanism as viewed from the direction of the arrow 5 in FIG. 4 . 図５の６－６線に沿う断面図である。6 is a cross-sectional view taken along line 6-6 in FIG. 5. 図６の７－７線断面図である。This is a cross-sectional view taken along line 7-7 in Figure 6. 車両用シート装置の一部を図５の８－８線に沿って示す断面図である。8 is a cross-sectional view showing a part of the vehicle seat device taken along line 8-8 in FIG. 5. 第２の実施の形態の図８に対応した断面図である。FIG. 9 is a cross-sectional view corresponding to FIG. 8 of the second embodiment. 第３の実施の形態の図２に対応した斜視図である。FIG. 11 is a perspective view corresponding to FIG. 2 of a third embodiment;

以下、本発明の実施の形態について添付の図面を参照しながら説明する。以下の説明で「前後」、「左右」および「上下」は、座った乗員が前向きとなる姿勢にシートがある状態で当該乗員から見た方向を言うものとする。 The following describes an embodiment of the present invention with reference to the attached drawings. In the following description, "front/rear," "left/right," and "up/down" refer to directions as seen by a seated occupant with the seat facing forward.

本発明の第１の実施の形態について図１～図８を参照しながら説明すると、先ず図１および図２において、車両に搭載される車両用シート装置１０のシート１１は、乗員の座部を構成するシートクッション１２と、そのシートクッション１２の上方に配置されるシートバック１３とを備え、前記シートクッション１２の両側にはサイドカバー１４がそれぞれ配設され、前記シートバック１３の上部には乗員の頭部を受け止めるヘッドレスト１５が配設される。 The first embodiment of the present invention will be described with reference to Figures 1 to 8. First, in Figures 1 and 2, a seat 11 of a vehicle seat device 10 mounted on a vehicle includes a seat cushion 12 that forms the seating area for an occupant and a seat back 13 that is disposed above the seat cushion 12. Side covers 14 are disposed on both sides of the seat cushion 12, and a headrest 15 that supports the head of the occupant is disposed on the upper part of the seat back 13.

図３を併せて参照して、車両用シート装置１０は、前記シート１１をスライド可能とするために左右方向に間隔をあけつつ相互に平行に並んで直線状に延びる一対のスライドレール１６と、前記シート１１を回転可能に支持しつつ前記スライドレール１６に沿って移動可能な回転機構１７とを備える。 Referring also to FIG. 3, the vehicle seat device 10 includes a pair of slide rails 16 that extend linearly parallel to each other with a space between them in the left-right direction to allow the seat 11 to slide, and a rotation mechanism 17 that supports the seat 11 in a rotatable manner and can move along the slide rails 16.

前記車両用シート装置１０のシートフレーム１８は、前記シートクッション１２を支持するシートクッションフレーム１９と、前記シートクッション１２の上方に配置されるシートバック１３を支持するようにして前記シートクッションフレーム１９に連結されるシートバックフレーム２０とを備える。 The seat frame 18 of the vehicle seat device 10 includes a seat cushion frame 19 that supports the seat cushion 12, and a seat back frame 20 that is connected to the seat cushion frame 19 so as to support the seat back 13 that is disposed above the seat cushion 12.

シートクッションフレーム１９は、相互に左右方向に離間した位置に並ぶようにして前後方向に直線状に延びるように配置される一対のサイドフレーム１９ａと、それらのサイドフレーム１９ａの前端部間を連結するパンフレーム１９ｂと、一対の前記サイドフレーム１９ａの後端部間を連結するリヤパイプ１９ｃとを有する。 The seat cushion frame 19 has a pair of side frames 19a arranged to extend linearly in the front-to-rear direction while being spaced apart from each other in the left-to-right direction, a pan frame 19b connecting the front ends of the side frames 19a, and a rear pipe 19c connecting the rear ends of the pair of side frames 19a.

前記パンフレーム１９ｂおよび前記リヤパイプ１９ｃ間には、クッション側受圧部材２１が架け渡される。このクッション側受圧部材２１は、金属線を左右に蛇行するようにジグザグに湾曲して成る複数（この実施の形態では４個）のシートスプリング２２を有し、それらのシートスプリング２２は、隣接するシートスプリング２２同士が左右対称となるように配置され、インサート成形によってそれらのシートスプリング２２と一体に成形される樹脂製の複数の中間部連結部材２３で、隣接のシートスプリング２２同士が連結される。 A cushion-side pressure-receiving member 21 is spanned between the pan frame 19b and the rear pipe 19c. This cushion-side pressure-receiving member 21 has multiple (four in this embodiment) seat springs 22 made of metal wire bent in a zigzag pattern so that it snakes left and right. The seat springs 22 are arranged so that adjacent seat springs 22 are symmetrical, and adjacent seat springs 22 are connected to each other by multiple resin intermediate connecting members 23 that are molded integrally with the seat springs 22 by insert molding.

複数の前記シートスプリング２２の前端部は、前記シートフレーム１８における前記パンフレーム１９ｂに設けられる係止部２４にそれぞれ係合される。また相互に隣接するシートスプリング２２の後端部は、前記シートフレーム１８の前記リヤパイプ１９ｃに係合されるとともに、インサート成形によってシートスプリング２２と一体に成形される樹脂製の後端部連結部材２５で連結されており、前記後端部連結部材２５が、前記リヤパイプ１９ｃを覆うように形成される。 The front ends of the seat springs 22 are engaged with locking portions 24 provided on the pan frame 19b of the seat frame 18. The rear ends of adjacent seat springs 22 are engaged with the rear pipe 19c of the seat frame 18 and are connected by a resin rear end connecting member 25 that is molded integrally with the seat springs 22 by insert molding, and the rear end connecting member 25 is formed to cover the rear pipe 19c.

前記シートバックフレーム２０は、相互に左右方向に離間した位置に並ぶようにして上下方向に延びる一対のシートバックサイドフレーム２０ａと、それらのシートバックサイドフレーム２０ａの上端部間を連結するアッパフレーム２０ｂと、一対の前記シートバックサイドフレーム２０ａの下端部間を連結するロアフレーム２０ｃとを有する。 The seatback frame 20 has a pair of seatback side frames 20a extending vertically and spaced apart from each other in the left-right direction, an upper frame 20b connecting the upper ends of the seatback side frames 20a, and a lower frame 20c connecting the lower ends of the pair of seatback side frames 20a.

一対の前記シートバックサイドフレーム２０ａ間には、樹脂等によって弾性変形可能に形成されるバック側受圧部材２６が配置されており、このバック側受圧部材２６は、上部連結ワイヤ２７および下部連結ワイヤ２８を介して左右の前記シートバックサイドフレーム２０ａ間に架け渡される。 Between the pair of seatback side frames 20a, a back-side pressure-receiving member 26 made of resin or the like and capable of elastic deformation is disposed, and this back-side pressure-receiving member 26 is spanned between the left and right seatback side frames 20a via an upper connecting wire 27 and a lower connecting wire 28.

図４および図５を併せて参照して、前記シートフレーム１８は、前記回転機構１７上に載置されており、この回転機構１７は、前記スライドレール１６に沿って移動可能なベース部材２９と、前記シートフレーム１８を支持して前記ベース部材２９に回転可能に支持される環状の回転部材３０と、当該回転部材３０の一部を上方から覆って前記ベース部材２９に固定されるカバー部材３１とを備える。 Referring to both Figures 4 and 5, the seat frame 18 is placed on the rotation mechanism 17, which includes a base member 29 that is movable along the slide rail 16, an annular rotation member 30 that supports the seat frame 18 and is rotatably supported on the base member 29, and a cover member 31 that covers a portion of the rotation member 30 from above and is fixed to the base member 29.

前記ベース部材２９は、環状である第１底壁部２９ａと、第１底壁部２９ａの外周部から上方に立ち上がる円筒状の第１側壁部２９ｂと、第１側壁部２９ｂの上端部から外側方に張り出す第１鍔部２９ｃとを有し、第１鍔部２９ｃは矩形状に形成される。このベース部材２９は、平面視で一対の前記スライドレール１６の幅方向中央部よりも内側で前記クッション側受圧部材２１よりも下方に配置される。 The base member 29 has a first bottom wall portion 29a that is annular, a first cylindrical side wall portion 29b that rises upward from the outer periphery of the first bottom wall portion 29a, and a first flange portion 29c that protrudes outward from the upper end portion of the first side wall portion 29b, and the first flange portion 29c is formed in a rectangular shape. This base member 29 is positioned inside the widthwise center of the pair of slide rails 16 and below the cushion side pressure receiving member 21 in a plan view.

また前記カバー部材３１は、前記ベース部材２９の第１底壁部２９ａに上方から当接される環状の第２底壁部３１ａと、その第２底壁部３１ａの外周からわずかに上方に立ち上がる円筒状の第２側壁部３１ｂと、上方に向かうにつれて大径となるように形成されて第２側壁部３１ｂの上端部に連設される第１テーパ部３１ｃと、第１テーパ部３１ｃの上端部に連なる環状の第１平坦壁部３１ｄと、第１平坦壁部３１ｄの外周から上方に立ち上がる円筒状の第３側壁部３１ｅとを有し、前記第２底壁部３１ａは前記ベース部材２９の前記第１底壁部２９ａに複数のリベット３２で結合される。 The cover member 31 also has an annular second bottom wall portion 31a that abuts against the first bottom wall portion 29a of the base member 29 from above, a cylindrical second side wall portion 31b that rises slightly upward from the outer periphery of the second bottom wall portion 31a, a first tapered portion 31c that is formed so that its diameter increases as it goes upward and is connected to the upper end of the second side wall portion 31b, an annular first flat wall portion 31d that is connected to the upper end of the first tapered portion 31c, and a cylindrical third side wall portion 31e that rises upward from the outer periphery of the first flat wall portion 31d, and the second bottom wall portion 31a is connected to the first bottom wall portion 29a of the base member 29 with a plurality of rivets 32.

前記回転部材３０は、前記カバー部材３１の前記第１テーパ部３１ｃに外側方から対向する位置に配置されて上方に向かうにつれて大径となるように形成される第２テーパ部３０ａと、前記カバー部材３１の前記第２側壁部３１ｂに外側方から対向するようにして前記第２テーパ部３０ａの上端部から上方に立ち上がる円筒状の第３側壁部３０ｂと、第３側壁部３０ｂから外側方に張り出す第２鍔部３０ｃとを有し、第２鍔部３０ｃは矩形状に形成される。また第２鍔部３０ｃに、前記シートフレーム１８におけるシートクッションフレーム１９の前記サイドフレーム１９ａが複数ずつの第１のボルト３４および第２のナット３５で締結される。 The rotating member 30 has a second tapered portion 30a that is disposed at a position facing the first tapered portion 31c of the cover member 31 from the outside and is formed so that the diameter increases toward the top, a cylindrical third side wall portion 30b that rises upward from the upper end of the second tapered portion 30a so as to face the second side wall portion 31b of the cover member 31 from the outside, and a second flange portion 30c that protrudes outward from the third side wall portion 30b, and the second flange portion 30c is formed in a rectangular shape. The side frame 19a of the seat cushion frame 19 in the seat frame 18 is fastened to the second flange portion 30c with a plurality of first bolts 34 and second nuts 35.

前記回転部材３０は、前記ベース部材２９が有する環状の回転支持部３６に軸受３７を介して回転可能に支持されており、前記回転支持部３６は、前記ベース部材２９における第１底壁部２９ａと、前記第１側壁部２９ｂとで横断面形状が略Ｌ字状となるように形成される。 The rotating member 30 is rotatably supported by a ring-shaped rotating support portion 36 of the base member 29 via a bearing 37, and the rotating support portion 36 is formed so that the cross-sectional shape of the first bottom wall portion 29a of the base member 29 and the first side wall portion 29b is approximately L-shaped.

前記軸受３７は、環状のリテーナ３８の周方向複数箇所にボール３９が保持されて成り、前記回転部材３０における前記第１テーパ部３１ｃには、前記ボール３９を転動させるための環状凹部４０が形成される。 The bearing 37 is made up of balls 39 held at multiple circumferential positions on an annular retainer 38, and an annular recess 40 for rolling the balls 39 is formed in the first tapered portion 31c of the rotating member 30.

前記スライドレール１６は、車両の床面３３に固定される固定レール４１と、その固定レール４１に摺動可能に嵌合される可動レール４２とから成る。前記床面３３には、車両の前後方向に延びつつ上方に突出する突状部３３ａが形成されており、この突状部３３ａ上に前記固定レール４１が固定されることで、前記回転機構１７の下部を上下方向で前記スライドレール１６の下端よりも下方に配置することが可能となる。 The slide rail 16 is composed of a fixed rail 41 fixed to the floor surface 33 of the vehicle and a movable rail 42 slidably fitted to the fixed rail 41. A protrusion 33a that extends in the front-rear direction of the vehicle and protrudes upward is formed on the floor surface 33, and by fixing the fixed rail 41 onto this protrusion 33a, it is possible to position the lower part of the rotation mechanism 17 lower than the lower end of the slide rail 16 in the vertical direction.

前記可動レール４２には、一対の前記スライドレール１６の内側に延びて当該可動レール４２と一体もしくは別体（この実施の形態では別体）に形成される支持ブラケット４３が連設され、前記ベース部材２９は、第２のボルト４５と、その第２のボルト４５に螺合される第２のナット４６とで前記支持ブラケット４３に締結される。すなわち前記ベース部材２９は、前記支持ブラケット４３を介して前記可動レール４２に固定的に連結される。 A support bracket 43 is connected to the movable rail 42, which extends to the inside of the pair of slide rails 16 and is formed integrally with the movable rail 42 or separately (separately in this embodiment), and the base member 29 is fastened to the support bracket 43 by a second bolt 45 and a second nut 46 screwed onto the second bolt 45. In other words, the base member 29 is fixedly connected to the movable rail 42 via the support bracket 43.

前記支持ブラケット４３は、前記可動レール４２に下面が溶接等で固着されるようにして当該可動レール４２上に配置される平板状の取付け板部４３ａと、前記スライドレール１６の内側に隣接した位置で上下方向に延びて前記取付け板部４３ａに直角に連なる側板部４３ｂと、その側板部４３ｂの下端から前記スライドレール１６と反対側に延びて前記ベース部材２９における第１鍔部２９ｃに下方から当接する平板状の連結板部４３ｃとを一体に有するように形成されており、前記連結板部４３ｃが前記ベース部材２９の前記第１鍔部２９ｃに締結される。 The support bracket 43 is formed to have, integrally, a flat mounting plate portion 43a that is placed on the movable rail 42 with its underside fixed to the movable rail 42 by welding or the like, a side plate portion 43b that extends vertically at a position adjacent to the inside of the slide rail 16 and connects to the mounting plate portion 43a at a right angle, and a flat connecting plate portion 43c that extends from the lower end of the side plate portion 43b to the opposite side to the slide rail 16 and abuts from below against the first flange portion 29c of the base member 29, and the connecting plate portion 43c is fastened to the first flange portion 29c of the base member 29.

前記支持ブラケット４３の前記側板部４３ｂには第１フック部材４７が溶接等で固定され、前記可動レール４２に対する前記回転部材３０の上方への浮き上がりを抑制する変形抑制機構４９を前記第１フック部材４７と協働して構成する第２フック部材４８が、前記回転部材３０における前記第３側板部３０ｂに溶接等で固定されるとともに当該回転部材３０の回転を許容して前記第１フック部材４７に係合される。 A first hook member 47 is fixed to the side plate portion 43b of the support bracket 43 by welding or the like, and a second hook member 48 which cooperates with the first hook member 47 to form a deformation suppression mechanism 49 that suppresses the upward lift of the rotating member 30 relative to the movable rail 42 is fixed to the third side plate portion 30b of the rotating member 30 by welding or the like and engages with the first hook member 47 while allowing the rotating member 30 to rotate.

前記第１フック部材４７は、左右一対の前記可動レール４２の前端部および後端部にそれぞれ対応する部位の合計４箇所で前記支持ブラケット４３に固定され、第２フック部材４８は、前記回転部材３０における前記第３側板部３０ｂの前記第１フック部材４７に対応する４箇所に固定される。 The first hook member 47 is fixed to the support bracket 43 at a total of four locations corresponding to the front and rear ends of the pair of left and right movable rails 42, and the second hook member 48 is fixed to the third side plate portion 30b of the rotating member 30 at four locations corresponding to the first hook member 47.

図６および図７を併せて参照して、前記回転部材３０の前記ベース部材２９および前記カバー部材３１に対するロック状態ならびにロック状態解除は、前記回転部材３０に支持されるロック部材５２の操作で切替えられるものであり、このロック部材５２の作動に連動するがたつき抑制部材５３が前記カバー部材３１および前記回転部材３０間に配置される。 Referring to Figures 6 and 7 together, the locking and unlocking of the rotating member 30 with respect to the base member 29 and the cover member 31 is switched by operating a locking member 52 supported by the rotating member 30, and a rattle suppression member 53 that is linked to the operation of the locking member 52 is disposed between the cover member 31 and the rotating member 30.

前記カバー部材３１が有する第１テーパ部３１ｃと、前記回転部材３０が有する第２テーパ部３０ａとの間には、上方に向かうにつれて大径となるテーパ状の押し出し部材５４が配置される。この押し出し部材５４の周方向に間隔をあけた複数箇所には、当該押し出し部材５４の周方向に長く延びる収容孔５５が設けられており、前記カバー部材３１の前記第１テーパ部３１ｃおよび前記回転部材３０の第２テーパ部３０ａ間に介在するがたつき抑制部材５３が前記収容孔５５に収容される。 A tapered extrusion member 54, which increases in diameter as it goes upward, is disposed between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30. This extrusion member 54 has accommodation holes 55 extending long in the circumferential direction of the extrusion member 54 at multiple locations spaced apart in the circumferential direction, and a rattle suppression member 53 interposed between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30 is accommodated in the accommodation hole 55.

一方、前記回転部材３０には、前記ロック部材５２が鉛直な軸線を有する軸５１を介して回動可能に支持されており、このロック部材５２は、図６（ａ）で示すように前記カバー部材３１の前記第１テーパ部３１ｃに係合して前記回転部材３０の回転を阻止するロック位置と、図６（ｂ）で示すように前記第１テーパ部３１ｃとの係合を解除して前記回転部材３０の回転を許容するロック解除位置との間での回動が可能であり、ばね５６によって前記ロック位置側に回動付勢される。 On the other hand, the locking member 52 is rotatably supported on the rotating member 30 via a shaft 51 having a vertical axis, and this locking member 52 can rotate between a locked position in which it engages with the first tapered portion 31c of the cover member 31 to prevent rotation of the rotating member 30 as shown in FIG. 6(a) and an unlocked position in which it disengages from the first tapered portion 31c to allow rotation of the rotating member 30 as shown in FIG. 6(b), and is biased to rotate toward the locked position by a spring 56.

前記ロック部材５２が有する連結腕部５２ａは、前記回転部材３０の前記第２テーパ部３０ａに形成された挿通孔５７に挿通され、前記連結腕部５２ａの先端部は、前記押し出し部材５４に形成される連結孔５８に挿通可能であり、前記連結腕部５２ａの先端部を前記連結孔５８に挿通させることで前記押し出し部材５４に前記ロック部材５２が連結される。この連結腕部５２ａは、図６（ｂ）で示すように、前記ロック部材５２がロック解除位置となったときに前記連結孔５８に連結され、前記押し出し部材５４にその回動方向への押圧力が前記連結腕部５２ａから作用することになる。 The connecting arm 52a of the locking member 52 is inserted into an insertion hole 57 formed in the second tapered portion 30a of the rotating member 30, and the tip of the connecting arm 52a can be inserted into a connecting hole 58 formed in the pushing member 54, and the locking member 52 is connected to the pushing member 54 by inserting the tip of the connecting arm 52a into the connecting hole 58. As shown in FIG. 6(b), when the locking member 52 is in the unlocked position, the connecting arm 52a is connected to the connecting hole 58, and a pressing force in the rotation direction is applied to the pushing member 54 from the connecting arm 52a.

また前記ロック部材５２が有する係合腕部５２ｂは、図６（ａ）で示す前記ロック位置では、前記回転部材３０における前記第２テーパ部３０ａに形成された第１の貫通孔５９と、前記カバー部材３１の第１テーパ部３１ｃに形成された第２の貫通孔６０に係合するものの、図６（ｂ）で示すロック解除位置では前記第２の貫通孔６０から離脱して前記カバー部材３１との係合を解除するものであり、前記ロック位置および前記ロック解除位置間で前記係合腕部５２ｂは前記押し出し部材５４を跨ぐように作動する。 The engagement arm 52b of the locking member 52 engages with the first through hole 59 formed in the second tapered portion 30a of the rotating member 30 and the second through hole 60 formed in the first tapered portion 31c of the cover member 31 in the locked position shown in FIG. 6(a), but disengages from the second through hole 60 and releases the engagement with the cover member 31 in the unlocked position shown in FIG. 6(b). Between the locked position and the unlocked position, the engagement arm 52b operates to straddle the push-out member 54.

前記回転部材３０における前記第２テーパ部３０ａには、前記がたつき抑制部材５３の一部を収容する凹部６１が前記がたつき抑制部材５３を緊密に嵌合させることを可能として形成される。 The second tapered portion 30a of the rotating member 30 has a recess 61 that accommodates a portion of the rattle suppression member 53 and allows the rattle suppression member 53 to fit tightly.

前記がたつき抑制部材５３は、前記ロック部材５２の前記ロック解除位置から前記ロック位置側への作動に応じた前記押し出し部材５４の移動方向６２に進むにつれて高さが次第に低くなる斜面５３ａを有するようにして楔形に形成され、前記がたつき抑制部材５３を緊密に嵌合させることを可能とした前記凹部６１は、前記斜面５３ａに対向する凹部側斜面６１ａを有しつつ当該がたつき抑制部材５３の一部を収容するようにして三角形状に形成される。 The rattle suppression member 53 is formed in a wedge shape with a slope 53a that gradually decreases in height as it advances in the movement direction 62 of the push-out member 54 in response to the operation of the locking member 52 from the unlocked position to the locked position, and the recess 61 that allows the rattle suppression member 53 to be tightly fitted is formed in a triangular shape that has a recess side slope 61a facing the slope 53a and accommodates a part of the rattle suppression member 53.

また前記押し出し部材５４に形成された前記収容孔５５の長手方向両端部のうち前記移動方向６２に沿う前端部と、前記がたつき抑制部材５３との間には、コイルばね６３が縮設されており、このコイルばね６３が発揮するばね力で前記がたつき抑制部材５３は前記移動方向６２とは逆方向に付勢される。 A coil spring 63 is compressed between the front end of the housing hole 55 formed in the push-out member 54 along the moving direction 62 and the rattle suppression member 53, and the spring force exerted by the coil spring 63 biases the rattle suppression member 53 in the opposite direction to the moving direction 62.

而して前記ロック部材５２が前記ロック位置にあるときには、図６（ａ）で示すように、前記がたつき抑制部材５３の前記斜面５３ａが、前記凹部６１の前記凹部側斜面６１ａに緊密に当接することで前記がたつき抑制部材５２が前記回転部材３０および前記カバー部材３１に緊密に接触することになり、それにより回転部材３０のがたつきが阻止される。 When the locking member 52 is in the locked position, as shown in FIG. 6(a), the inclined surface 53a of the rattle suppression member 53 tightly abuts against the recess side inclined surface 61a of the recess 61, so that the rattle suppression member 52 tightly contacts the rotating member 30 and the cover member 31, thereby preventing rattle of the rotating member 30.

また前記ロック部材５２が前記ロック解除位置となったときには、図６（ｂ）で示すように、前記収容孔５５の長手方向両端部のうち前記移動方向６２に沿う後端部が前記がたつき抑制部材５３に当接し、前記コイルばね６３の勢力に抗して前記がたつき抑制部材５３は前記移動方向６２に押されることになり、前記がたつき抑制部材５３の前記斜面５３ａが前記凹部側斜面６１ａから離反する側に前記がたつき抑制部材５３が移動し、がたつき防止状態が解除されることになる。 When the locking member 52 is in the unlocked position, as shown in FIG. 6(b), the rear end of the longitudinal ends of the accommodation hole 55 along the moving direction 62 comes into contact with the rattle suppression member 53, and the rattle suppression member 53 is pushed in the moving direction 62 against the force of the coil spring 63, and the inclined surface 53a of the rattle suppression member 53 moves away from the recess side inclined surface 61a, and the rattle prevention state is released.

図８を併せて参照して、前記回転機構１７における前記回転部材３０の上部外周の周方向に沿う少なくとも一部は、カバー６５で外側方から囲われており、この実施の形態では、前記シートクッション１２に座った乗員が車両前後方向前向きとなる状態では、前記回転部材３０における前記第３側壁部３０ｂの上部および第２鍔部３０ｃを後方から囲う位置に前記カバー６５が配置される。 Referring also to Figure 8, at least a portion of the circumferential direction of the upper outer periphery of the rotating member 30 in the rotating mechanism 17 is surrounded from the outside by a cover 65, and in this embodiment, when the occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle, the cover 65 is positioned in a position that surrounds the upper part of the third side wall portion 30b and the second flange portion 30c of the rotating member 30 from the rear.

しかも前記シートクッション１２に座った乗員が車両前後方向前向きとなる状態で前記回転部材３０の上端部後端縁すなわち第２鍔部３０ｃの後端縁には、前記シートクッション１２の表皮１２ａが連結されており、その表皮１２ａの前記第２鍔部３０ｃへの連結部に前記カバー６５の上部が連接される。 In addition, when the occupant sitting on the seat cushion 12 faces forward in the vehicle longitudinal direction, the cover 12a of the seat cushion 12 is connected to the rear end edge of the upper end of the rotating member 30, i.e., the rear end edge of the second flange 30c, and the upper part of the cover 65 is connected to the connection part of the cover 12a to the second flange 30c.

また前記カバー６５は、前記シートクッションフレーム１９の一部を構成する一対のサイドフレーム１９ａに取付け腕６６（図５参照）を介して取付けられる。 The cover 65 is attached to a pair of side frames 19a that form part of the seat cushion frame 19 via mounting arms 66 (see Figure 5).

しかも前記カバー６５は、平板状である上板６５ａと、その上板６５ａに下方から対向する下板６５ｂと、前記上板６５ａおよび前記下板６５ｂの前記回転部材３０とは反対側の端部間を連結する連結板６５ｃと、前記上板６５ａ、前記下板６５ｂおよび前記連結板６５ｃの幅方向両端を連結する端壁６５ｄとを一体に有しており、このカバー６５の外側面すなわち前記連結板６５ｃの外側面は、前記回転部材３０の外側方に膨らんだ円弧状に形成される。 The cover 65 is integrally made up of a flat upper plate 65a, a lower plate 65b facing the upper plate 65a from below, a connecting plate 65c connecting the ends of the upper plate 65a and the lower plate 65b opposite the rotating member 30, and an end wall 65d connecting both ends in the width direction of the upper plate 65a, the lower plate 65b, and the connecting plate 65c. The outer surface of the cover 65, i.e., the outer surface of the connecting plate 65c, is formed in an arc shape that bulges outward from the rotating member 30.

また前記シートクッション１２に座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材２９を後方から囲う固定カバー部材６７が、前記カバー６５の下方に固定配置されており、この固定カバー部材６７は、たとえば前記スライドレール１６における固定レール４１の車両前後方向後端部に取付けられる。 In addition, a fixed cover member 67 that surrounds at least the base member 29 from the rear when the occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle is fixedly positioned below the cover 65, and this fixed cover member 67 is attached, for example, to the rear end portion of the fixed rail 41 of the slide rail 16 in the fore-and-aft direction of the vehicle.

前記固定カバー部材６７は、上記カバー６５と同様に、平板状である上板６７ａと、その上板６７ａに下方から対向する下板６７ｂと、前記上板６７ａおよび前記下板６７ｂの前記回転部材３０とは反対側の端部間を連結する連結板６７ｃと、前記上板６７ａ、前記下板６７ｂおよび前記連結板６７ｃの幅方向両端を連結する端壁６７ｄとを一体に有しており、前記連結板６７ｃの外側面は、前記回転部材３０の外側方に膨らんだ円弧状に形成される。 The fixed cover member 67, like the cover 65, has a flat upper plate 67a, a lower plate 67b facing the upper plate 67a from below, a connecting plate 67c connecting the ends of the upper plate 67a and the lower plate 67b on the opposite side to the rotating member 30, and an end wall 67d connecting both ends in the width direction of the upper plate 67a, the lower plate 67b, and the connecting plate 67c, and the outer surface of the connecting plate 67c is formed in an arc shape that bulges outward from the rotating member 30.

しかも前記固定カバー部材６７は、前記カバー６５の下部に相対摺動可能に接触するものであり、前記固定カバー部材６７の上端部の上板部６７ａが前記カバー６５における前記下板６５ｂの下面に相対摺動可能に接触する。 The fixed cover member 67 is in relatively slidable contact with the lower part of the cover 65, and the upper plate part 67a at the upper end part of the fixed cover member 67 is in relatively slidable contact with the lower surface of the lower plate 65b of the cover 65.

ところで前記サイドフレーム１９ａは、サイドカバー１４で外側方から覆われるのであるが、このサイドカバー１４の下端位置は、図４で示すように、前記支持ブラケット４３における前記取付け板部４３ａの上面よりも上下方向でわずかに上方にあるように設定され、図２で示すように、上下方向での位置が前記カバー６５の下端位置と同一である。 The side frame 19a is covered from the outside by the side cover 14, and the lower end position of this side cover 14 is set to be slightly above the upper surface of the mounting plate portion 43a of the support bracket 43 in the vertical direction as shown in Figure 4, and is in the same vertical position as the lower end position of the cover 65 as shown in Figure 2.

次にこの第１の実施の形態の作用について説明すると、車両用シート装置１０が備える回転機構１７の一部を構成する回転部材３０の上部外周の周方向に沿う少なくとも一部が、カバー６５で外側方から囲われるので、少なくとも前記カバー６５で囲われている部位では異物が回転機構１７内に侵入することを抑制することができる。 Next, the operation of this first embodiment will be explained. At least a portion of the circumferential direction of the upper outer periphery of the rotating member 30, which constitutes part of the rotating mechanism 17 equipped in the vehicle seat device 10, is surrounded from the outside by the cover 65, so that it is possible to prevent foreign matter from entering the rotating mechanism 17 at least in the area surrounded by the cover 65.

また前記カバー６５が、前記シートクッション１２に座った乗員が車両前後方向前向きとなる状態では前記回転部材３０の上部外周を後方から囲う位置に配置されるので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構１７への侵入を抑制することができる。 In addition, the cover 65 is positioned to surround the upper outer periphery of the rotating member 30 from the rear when the occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle, thereby preventing foreign objects from entering the rotating mechanism 17 from the rear passenger seat side when the driver's seat or passenger seat is facing forward.

またシートクッション１２に座った乗員が車両前後方向前向きとなる状態で前記回転部材３０の上端部後端縁に、前記シートクッション１２の表皮１２ａが前記カバー６５の外面に接触しつつ連結されるので、前記カバー６５の上部を前記シートクッション１２の表皮１２ａに連接することができ、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構１７への侵入をより効果的に抑制することができる。 In addition, when an occupant sitting on the seat cushion 12 faces forward in the vehicle longitudinal direction, the cover 12a of the seat cushion 12 is connected to the upper end rear edge of the rotating member 30 while contacting the outer surface of the cover 65, so that the upper part of the cover 65 can be connected to the cover 12a of the seat cushion 12, and the intrusion of foreign objects into the rotating mechanism 17 from the rear passenger seat side can be more effectively prevented when the driver's seat or passenger seat is facing forward.

また前記シートクッションフレーム１９が、直線状に延びるとともに前記回転部材３０に支持される一対のサイドフレーム１９ａを有しており、前記カバー６５がそれらのサイドフレーム１９ａに取付けられるので、簡単な構造で前記カバー６５をシート１１とともに回転させるようにすることができる。 In addition, the seat cushion frame 19 has a pair of side frames 19a which extend linearly and are supported by the rotating member 30, and the cover 65 is attached to the side frames 19a , so that the cover 65 can be rotated together with the seat 11 with a simple structure.

また前記カバー６５の外側面が、前記回転部材３０の外側方に膨らんだ円弧状に形成されるので、シート１１とともに前記カバー６５が回転する際に、車室内のフロア上にある荷物等と前記カバー６５が接触したとしても前記カバー６５ひいてはシート１１の円滑な回転を実現することができる。 In addition, the outer surface of the cover 65 is formed in an arc shape that bulges outward from the rotating member 30, so that when the cover 65 rotates together with the seat 11, even if the cover 65 comes into contact with luggage or the like on the floor of the vehicle interior, the cover 65 and therefore the seat 11 can rotate smoothly.

また前記シートクッション１２に座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材２９を後方から囲う固定カバー部材６７が前記カバー６５の下方に固定配置されるので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構１７への侵入を抑制することができる。 In addition, when the occupant sitting on the seat cushion 12 faces forward in the fore-and-aft direction of the vehicle, a fixed cover member 67 that surrounds at least the base member 29 from the rear is fixedly positioned below the cover 65, thereby preventing foreign objects from entering the rotation mechanism 17 from the rear passenger seat side when the driver's seat or passenger seat is facing forward.

しかも前記固定カバー部材６７が前記カバー６５の下部に相対摺動可能に接触するので、運転席や助手席が前向きとなる状態での後方の同乗者席側からの異物の回転機構１７への侵入をより効果的に抑制することができる。また前記固定カバー部材６７の外側面が、その上方の前記カバー６５と同様に前記回転部材３０の外側方に膨らんだ円弧状に形成されるので、前記シート１１の回転途中で、前記カバー６５を含む前記シート１１と、前記固定カバー部材６７との間に隙間が生じることを極力抑制し、異物の回転機構１７への侵入を効果的に抑制することができる。 Moreover, since the fixed cover member 67 is in relatively slidable contact with the lower part of the cover 65, it is possible to more effectively prevent foreign objects from entering the rotating mechanism 17 from the rear passenger seat side when the driver's seat and passenger seat are facing forward. In addition, since the outer surface of the fixed cover member 67 is formed in an arc shape that bulges outward from the rotating member 30, like the cover 65 above it, it is possible to minimize the occurrence of a gap between the seat 11 including the cover 65 and the fixed cover member 67 during the rotation of the seat 11, and it is possible to effectively prevent foreign objects from entering the rotating mechanism 17.

また前記シートクッション１２を外側方から覆うサイドカバー１４の下端位置が、前記カバー６５の下端位置と同一に設定されるので、運転席や助手席が車幅方向に向いた状態での後方の同乗者席側からの異物の回転機構１７への侵入を抑制することができる。 In addition, the lower end position of the side cover 14 that covers the seat cushion 12 from the outside is set to be the same as the lower end position of the cover 65, so that it is possible to prevent foreign objects from entering the rotating mechanism 17 from the rear passenger seat side when the driver's seat and passenger seat are facing in the vehicle width direction.

図９は本発明の第２の実施の形態を示すものであり、上記第１の実施の形態に対応する部分には、同一の参照符号を付して図示するのみとし、詳細な説明は省略する。 Figure 9 shows a second embodiment of the present invention, and parts corresponding to those in the first embodiment are simply shown with the same reference numerals, and detailed descriptions are omitted.

シートバック１３とともにシート７１を構成するシートクッション７２の下方には回転機構１７が配置されており、この回転機構１７の一部を構成する回転部材３０が有する第２テーパ部３０ａには、前記シートクッション７２に座った乗員が車両前後方向前向きとなる状態で車両前後方向後方に突出するカバー取付け板７４が固着される。 A rotating mechanism 17 is disposed below the seat cushion 72, which constitutes the seat 71 together with the seat back 13. A cover mounting plate 74 that protrudes rearward in the longitudinal direction of the vehicle is fixed to the second tapered portion 30a of a rotating member 30 that constitutes part of the rotating mechanism 17, when the occupant sitting on the seat cushion 72 faces forward in the longitudinal direction of the vehicle.

一方、前記シートクッション７２の表皮７２ａの一部は、前記シートクッション７２に座った乗員が車両前後方向前向きとなる状態では、前記回転部材３０の上部外周を後方から囲うカバー７５を形成するようにして下方に延長されており、このカバー７５の下端縁部が前記カバー取付け板７４に固定的に連結されるものであり、この実施の形態では縫着によって前記カバー７５の下端縁部に固着されたフック７６が、前記カバー取付け板７４の端縁部に係合される。これにより前記カバー７５は、前記シートクッション７２に座った乗員が車両前後方向前向きとなる状態では、前記回転部材３０の上部外周を後方から囲いつつ前記カバー取付け板７４に固定的に連結されることになるが、前記カバー７５の下端縁が前記カバー取付け板７４に接着等で直接固着されるようにしてもよい。 On the other hand, a part of the skin 72a of the seat cushion 72 extends downward to form a cover 75 that surrounds the upper outer periphery of the rotating member 30 from the rear when the occupant sitting on the seat cushion 72 faces forward in the vehicle longitudinal direction, and a lower edge of this cover 75 is fixedly connected to the cover mounting plate 74, and in this embodiment, a hook 76 fixed to the lower edge of the cover 75 by sewing is engaged with an edge of the cover mounting plate 74. As a result, when the occupant sitting on the seat cushion 72 faces forward in the vehicle longitudinal direction, the cover 75 surrounds the upper outer periphery of the rotating member 30 from the rear and is fixedly connected to the cover mounting plate 74, but the lower edge of the cover 75 may be directly fixed to the cover mounting plate 74 by adhesion or the like.

また前記カバー７５の下方には、前記シートクッション７２に座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材２９を後方から囲う固定カバー部材７７が固定配置される。 Further, a fixed cover member 77 is fixedly disposed below the cover 75 so as to surround at least the base member 29 from the rear in a state in which the occupant seated on the seat cushion 72 faces forward in the vehicle front-rear direction.

この固定カバー部材７７は、たとえば前記スライドレール１６における固定レール４１の車両前後方向後端部に取付けられるものであり、前記スライドレール１６の長手方向と直交する平面に沿って上下に延びる平板状の縦壁部７７ａと、この縦壁部７７ａの上端から車両前後方向後方に張り出す平板状の張り出し板部７７ｂとを一体に有するように形成される。 This fixed cover member 77 is attached, for example, to the rear end of the fixed rail 41 of the slide rail 16 in the vehicle longitudinal direction, and is formed integrally with a flat vertical wall portion 77a extending vertically along a plane perpendicular to the longitudinal direction of the slide rail 16, and a flat protruding plate portion 77b protruding rearward in the vehicle longitudinal direction from the upper end of the vertical wall portion 77a.

前記張り出し板部７７ｂの車両前後方向に沿う後端縁は、前記フック７６に接触し、回転部材３０とともに回転する前記フック７６の回転を円滑化するために前記回転部材３０の回転軸線を中心とする円弧状に形成される。 The rear edge of the protruding plate portion 77b along the vehicle front-rear direction is in contact with the hook 76 and is formed in an arc shape centered on the rotation axis of the rotating member 30 to facilitate smooth rotation of the hook 76 which rotates together with the rotating member 30.

この第２の実施の形態によれば、シートクッション７２の表皮７２ａでカバー７５が形成されるので、異物が回転機構１７内に侵入することを抑制するにあたって部品点数が増大するのを回避することができる。 In this second embodiment, the cover 75 is formed from the surface 72a of the seat cushion 72, so that an increase in the number of parts can be avoided when preventing foreign objects from entering the rotation mechanism 17.

図１０は本発明の第３の実施の形態を示すものであり、上記第１および第２の実施の形態に対応する部分には、同一の参照符号を付して図示するのみとし、詳細な説明は省略する。 Figure 10 shows a third embodiment of the present invention, and parts corresponding to those in the first and second embodiments are shown with the same reference numerals, and detailed explanations are omitted.

回転機構１７における回転部材３０（第１および第２の実施の形態参照）の上部外周の周方向に沿う少なくとも一部は、カバー７８で外側方から囲われており、この実施の形態ではシートクッション１２に座った乗員が車両前後方向前向きとなる状態では後方からカバー７８で囲われる。 At least a portion of the circumferential direction of the upper outer periphery of the rotating member 30 in the rotating mechanism 17 (see the first and second embodiments) is surrounded from the outside by a cover 78, and in this embodiment, when an occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle, the occupant is surrounded from the rear by the cover 78.

このカバー７８は、基本的には上述の第１の実施の形態のカバー６５と同様に構成されるのであるが、前記シートクッションフレーム１２の一部を構成する一対のサイドフレーム１２（第１の実施の形態参照）を外側方から囲う一対のサイドカバー１４の少なくとも一方と一体に形成される。しかも前記サイドカバー１４の下端位置と、前記カバー７７の下端位置と同一に設定され、前記カバー７８の下方には固定カバー部材６７が固定配置される。 This cover 78 is basically configured in the same way as the cover 65 of the first embodiment described above, but is formed integrally with at least one of the pair of side covers 14 that surround from the outside the pair of side frames 12 (see the first embodiment) that constitute a part of the seat cushion frame 12. Moreover, the lower end position of the side cover 14 and the lower end position of the cover 77 are set to be the same, and a fixed cover member 67 is fixedly disposed below the cover 78.

以上、本発明の実施の形態について説明したが、本発明は上記実施の形態に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行うことが可能である。 Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various design changes can be made without departing from the invention described in the claims.

たとえば上述の実施の形態では、カバー６５，７８がシート１１，７１とともに回転するように構成されていたが、カバー６５，７８が固定位置に在るようにすることも可能である。 For example, in the above-described embodiment, the covers 65, 78 are configured to rotate with the seats 11, 71, but it is also possible for the covers 65, 78 to be in a fixed position.

１０・・・車両用シート装置
１２・・・シートクッション
１２ａ・・・表皮
１４・・・サイドカバー
１７・・・回転機構
１９・・・シートクッションフレーム
１９ａ・・・サイドフレーム
２９・・・ベース部材
３０・・・回転部材
６５，７５，７８・・・カバー
６７，７７・・・固定カバー部材
 10: Vehicle seat device 12: Seat cushion 12a: Cover 14: Side cover 17: Rotation mechanism 19: Seat cushion frame 19a: Side frame 29: Base member 30: Rotation member 65, 75, 78: Covers 67, 77: Fixed cover member

Claims (10)

シートクッション（１２，７２）を支持するシートクッションフレーム（１９）が取付けられる回転部材（３０）ならびに当該回転部材（３０）を下方から回転可能に支持するベース部材（２９）を有する回転機構（１７）を備える車両用シート装置において、前記回転部材（３０）の上部外周の周方向に沿う少なくとも一部が、カバー（６５，７５，７８）で外側方から囲われ、
前記シートクッション（１２）に座った乗員が車両前後方向前向きとなる状態で前記回転部材（３０）の上端部後端縁に、前記シートクッション（１２）の表皮（１２ａ）が前記カバー（６５，７８）の外面に接触しつつ連結されることを特徴とする車両用シート装置。 In a vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached and a base member (29) that rotatably supports the rotation member (30) from below, at least a portion of an upper outer periphery of the rotation member (30) along a circumferential direction is surrounded from the outside by a cover (65, 75, 78),
a seat cushion (12) having a rear end edge at an upper end of the rotating member (30) and a seat cover (12a) thereof being in contact with an outer surface of the cover (65, 78) when the occupant sitting on the seat cushion (12) is facing forward in the fore-and-aft direction of the vehicle. シートクッション（１２，７２）を支持するシートクッションフレーム（１９）が取付けられる回転部材（３０）ならびに当該回転部材（３０）を下方から回転可能に支持するベース部材（２９）を有する回転機構（１７）を備える車両用シート装置において、前記回転部材（３０）の上部外周の周方向に沿う少なくとも一部が、カバー（６５，７５，７８）で外側方から囲われ、
前記カバー（６５，７８）の外側面が、前記回転部材（３０）の外側方に膨らんだ円弧状に形成されることを特徴とする車両用シート装置。 In a vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached and a base member (29) that rotatably supports the rotation member (30) from below, at least a portion of an upper outer periphery of the rotation member (30) along a circumferential direction is surrounded from the outside by a cover (65, 75, 78),
A vehicle seat apparatus, characterized in that an outer surface of the cover (65, 78) is formed in an arc shape that bulges outwardly of the rotating member (30). シートクッション（１２，７２）を支持するシートクッションフレーム（１９）が取付けられる回転部材（３０）ならびに当該回転部材（３０）を下方から回転可能に支持するベース部材（２９）を有する回転機構（１７）を備える車両用シート装置において、前記回転部材（３０）の上部外周の周方向に沿う少なくとも一部が、カバー（６５，７５，７８）で外側方から囲われ、
前記シートクッション（１２，７２）に座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材（２９）を後方から囲う固定カバー部材（６７，７７）が、前記カバー（６５，７５，７８）の下方に固定配置され、
前記シートクッション（１２）に座った乗員が車両前後方向前向きとなる状態で、前記固定カバー部材（６７）が、前記カバー（６５，７８）の下部に相対摺動可能に接触する
ように形成されることを特徴とする車両用シート装置。 In a vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached and a base member (29) that rotatably supports the rotation member (30) from below, at least a portion of an upper outer periphery of the rotation member (30) along a circumferential direction is surrounded from the outside by a cover (65, 75, 78),
a fixed cover member (67, 77) that surrounds at least the base member (29) from the rear in a state in which an occupant sitting on the seat cushion (12, 72) faces forward in the vehicle front-rear direction, and is fixedly disposed below the cover (65, 75, 78);
A vehicle seat device characterized in that, when an occupant sitting on the seat cushion (12) is facing forward in the fore-and-aft direction of the vehicle, the fixed cover member (67) is formed so as to be in relative slidable contact with a lower portion of the cover (65, 78). シートクッション（１２，７２）を支持するシートクッションフレーム（１９）が取付けられる回転部材（３０）ならびに当該回転部材（３０）を下方から回転可能に支持するベース部材（２９）を有する回転機構（１７）を備える車両用シート装置において、
前記回転部材（３０）の上部外周の周方向に沿う少なくとも一部が、カバー（６５，７８）で外側方から囲われ、
前記シートクッション（１２，７２）に座った乗員が車両前後方向前向きとなる状態で少なくとも前記ベース部材（２９）を後方から囲う固定カバー部材（６７，７７）が、前記カバー（６５，７５，７８）の下方に固定配置され、
前記シートクッションフレーム（１９）が、直線状に延びるとともに前記回転部材（３０）に支持される一対のサイドフレーム（１９ａ）を有し、
前記サイドフレーム（１９ａ）を外側方から囲うサイドカバー（１４）の下端位置が、前記カバー（６５，７８）の下端位置と同一に設定されることを特徴とする車両用シート装置。 A vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached, and a base member (29) rotatably supporting the rotation member (30) from below,
At least a portion of the circumferential direction of the upper outer periphery of the rotating member (30) is surrounded from the outside by a cover (65, 78),
a fixed cover member (67, 77) that surrounds at least the base member (29) from the rear in a state in which an occupant sitting on the seat cushion (12, 72) faces forward in the vehicle front-rear direction, and is fixedly disposed below the cover (65, 75, 78);
The seat cushion frame (19) has a pair of side frames (19a) that extend linearly and are supported by the rotating member (30),
A vehicle seat apparatus, characterized in that a lower end position of a side cover (14) surrounding the side frame (19a) from the outside is set to be the same as a lower end position of the cover (65, 78). 前記カバー（６５，７８）の外側面が、前記回転部材（３０）の外側方に膨らんだ円弧状に形成されることを特徴とする請求項１，３，４のいずれか１項に記載の車両用シート装置。 The vehicle seat device according to any one of claims 1, 3, and 4, characterized in that the outer surface of the cover (65, 78) is formed in an arc shape that bulges outward from the rotating member (30). 前記カバー（６５，７５，７８）が、前記シートクッション（１２，７２）に座った乗員が車両前後方向前向きとなる状態では、前記回転部材（３０）の上部外周を後方から囲う位置に配置されることを特徴とする請求項３または４に記載の車両用シート装置。 The vehicle seat device according to claim 3 or 4, characterized in that the cover (65, 75, 78) is disposed in a position surrounding the upper outer periphery of the rotating member (30) from the rear when the occupant sitting on the seat cushion (12, 72) faces forward in the vehicle longitudinal direction. 前記カバー（６５，７５，７８）が、前記シートクッション（１２，７２）に座った乗員が車両前後方向前向きとなる状態では、前記回転部材（３０）の上部外周を後方から囲う位置に配置されることを特徴とする請求項１，２，５のいずれか１項に記載の車両用シート装置。 The vehicle seat device according to any one of claims 1, 2, and 5, characterized in that the cover (65, 75, 78) is disposed in a position surrounding the upper outer periphery of the rotating member (30) from the rear when the occupant sitting on the seat cushion (12, 72) faces forward in the vehicle longitudinal direction. 前記シートクッションフレーム（１９）が、直線状に延びるとともに前記回転部材（３０）に支持される一対のサイドフレーム（１９ａ）を有し、前記カバー（６５）がそれらのサイドフレーム（１９ａ）に取付けられることを特徴とする請求項１～３のいずれか１項に記載の車両用シート装置。 The vehicle seat device according to any one of claims 1 to 3, characterized in that the seat cushion frame (19) has a pair of side frames (19a) extending linearly and supported by the rotating member ( 30 ), and the cover (65) is attached to those side frames (19a). 前記シートクッション（７２）の表皮（７２ａ）を延長して前記カバー（７５）が形成されることを特徴とする請求項６記載の車両用シート装置。 The vehicle seat device according to claim 6, characterized in that the cover (75) is formed by extending the surface (72a) of the seat cushion (72). 前記カバー（７８）が、一対の前記サイドカバー（１４）の少なくとも一方と一体に形成されることを特徴とする請求項４に記載の車両用シート装置。 The vehicle seat device according to claim 4, characterized in that the cover (78) is integrally formed with at least one of the pair of side covers (14).
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US17/614,778 US20220227264A1 (en) 2019-05-31 2020-05-29 Rotating device for vehicle interior item, and rotating device for vehicle seat
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PCT/JP2020/021399 WO2020241841A1 (en) 2019-05-31 2020-05-29 Rotating device for vehicle interior item, and rotating device for vehicle seat
US18/354,236 US12012019B2 (en) 2019-05-31 2023-07-18 Rotating device for vehicle interior item, and rotating device for vehicle seat
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Citations (1)

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JP2004291723A (en) 2003-03-26 2004-10-21 Asmo Co Ltd Vehicular rotating seat device

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JPH07223473A (en) * 1994-02-10 1995-08-22 Ikeda Bussan Co Ltd Revolving seat
JPH09286263A (en) * 1996-04-18 1997-11-04 Kanto Auto Works Ltd Rotating seat for automobile

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