JP6093420B1

JP6093420B1 - child seat

Info

Publication number: JP6093420B1
Application number: JP2015198925A
Authority: JP
Inventors: 正昭戸谷; 成幸青木
Original assignee: 株式会社シーエー産商
Priority date: 2015-10-06
Filing date: 2015-10-06
Publication date: 2017-03-08
Anticipated expiration: 2035-10-06
Also published as: JP2017071291A

Abstract

【課題】台座に対してシート本体を回転可能且つリクライニング可能とする機構をコンパクトで部品点数の少ない構成とし得て、軽量化を図ることが可能なチャイルドシートを提供することを目的としてなされたものである。【解決手段】台座１２と、台座１２に対して回転可能且つリクライニング可能なシート本体１４とを備えたチャイルドシートＳであって、シート本体１４の底面と対向する台座１２の上面に形成されたシート本体１４の重量を支持する支持面２６と、支持面２６の内側に設けられた台座１２に対して回転可能な回転部材４４と、を有し、回転部材４４の上面に形成された連結突部５５，５６，５７，５８が、シート本体１４の底面に形成された長孔形状の開口２８，２９，３０，３１に挿入された状態で、シート本体１４が回転部材４４に対してスライド移動可能に係合連結されている。【選択図】図２An object of the present invention is to provide a child seat that can reduce the weight of a mechanism that can rotate and recline a seat body with respect to a pedestal, can be configured with a small number of parts. is there. A child seat S including a pedestal 12 and a seat body 14 that is rotatable and reclining with respect to the pedestal 12, wherein the seat body is formed on the upper surface of the pedestal 12 that faces the bottom surface of the seat body 14. 14, a support surface 26 that supports the weight of 14, and a rotation member 44 that is rotatable with respect to the pedestal 12 provided inside the support surface 26, and a connecting projection 55 formed on the upper surface of the rotation member 44. , 56, 57, 58 are slidable relative to the rotating member 44 in a state in which they are inserted into long hole-shaped openings 28, 29, 30, 31 formed on the bottom surface of the sheet body 14. It is engaged and connected. [Selection] Figure 2

Description

この発明はチャイルドシートに関し、特にシート本体が台座に対して回転可能且つリクライニング可能なチャイルドシートに関する。 The present invention relates to a child seat, and more particularly to a child seat in which a seat body is rotatable with respect to a pedestal and can be reclined.

従来、車両用のシートに取り付けられるチャイルドシートでは、取扱い性の向上や着座した乳幼児の快適性の向上を図る目的で、車両用シートに取り付けられた台座に対してシート本体を回転可能且つリクライニング可能としたものが開発されている。このようなチャイルドシートの一例として下記特許文献１に記載されたものがある。 Conventionally, in a child seat attached to a vehicle seat, the seat body can be rotated and reclining with respect to a pedestal attached to the vehicle seat for the purpose of improving the handleability and the comfort of a seated infant. What has been developed. One example of such a child seat is described in Patent Document 1 below.

この特許文献１には、シート本体を回転させるために設けられた外径の大きな環状の旋回リングを台座の上に配置し、この旋回リングの上にリクライニングのためのレールを設け、このレールの上にシート本体を載置するようになした点、更にシート本体の座部の位置を低く抑えるために、シート本体の座部の下面及びリクライニング用のレールの一部を旋回リング中央の空間に落ち込ませるようになした点が開示されている。 In Patent Document 1, an annular turning ring having a large outer diameter provided for rotating the seat body is arranged on a pedestal, and a rail for reclining is provided on the turning ring. In order to keep the seat body seated on the seat and the seat position of the seat body to a low level, the lower surface of the seat body seat and a part of the reclining rail are placed in the space in the center of the swivel ring. The point which made it fall down is disclosed.

しかしながらこの特許文献１に記載のものは、シート本体の重量（乳幼児が着座している場合はその重量も含む）をリクライニング機構のレールや回転機構の旋回リングで支持しているため、これらリクライニング機構及び回転機構を構成する部品は一定の強度を確保する必要が生じ、軽量化や部品点数の削減が難しい。 However, since the thing of this patent document 1 is supporting the weight of a seat body (including the weight when an infant is seated) with the rail of a reclining mechanism, or the turning ring of a rotation mechanism, these reclining mechanisms In addition, it is necessary to secure a certain strength for the parts constituting the rotation mechanism, and it is difficult to reduce the weight and the number of parts.

特開平１０−１００７６０号公報Japanese Patent Laid-Open No. 10-1000076

本発明は以上のような事情を背景とし、台座に対してシート本体を回転可能且つリクライニング可能とする機構をコンパクトで部品点数の少ない構成とし得て、軽量化を図ることが可能なチャイルドシートを提供することを目的としてなされたものである。 The present invention provides a child seat that can be reduced in weight and can be configured with a compact structure with a small number of parts that allows the seat body to rotate and recline with respect to a pedestal against the background described above. It was made for the purpose of doing.

而して請求項１のものは、車両用のシートに取り付けられる台座と、該台座に対して回転可能且つリクライニング可能なシート本体とを備えたチャイルドシートであって、該シート本体の底面と対向する前記台座の上面に形成され、該シート本体の重量を支持する周方向に延びる支持面と、該支持面の内側に設けられた、該台座に対して回転可能な回転部材と、を有し、該回転部材の上面若しくは前記シート本体の底面の何れか一方に形成された連結突部が、該回転部材の上面若しくは該シート本体の底面の何れか他方に形成された長孔形状の開口に挿入された状態で、該シート本体が前記回転部材に対してスライド移動可能に係合連結されており、更に、前記開口の長手方向の縁部に沿って突出させた突条部と、該開口の方向に向かって折り曲げられた折曲げ部が幅方向の両端に形成された凹状部材と、を有し、前記突条部の先端部分が該凹状部材の内部に収容される状態で、該凹状部材が前記連結突部の先端に取り付けられていることを特徴とする。 Accordingly, the first aspect of the present invention is a child seat comprising a pedestal attached to a vehicle seat and a seat body that is rotatable and reclining with respect to the pedestal, and is opposed to the bottom surface of the seat body. A support surface formed on an upper surface of the pedestal and extending in a circumferential direction for supporting the weight of the seat body; and a rotating member provided on the inner side of the support surface and rotatable with respect to the pedestal; A connecting protrusion formed on either the upper surface of the rotating member or the bottom surface of the sheet body is inserted into an elongated hole formed on either the upper surface of the rotating member or the bottom surface of the sheet body. In this state, the sheet main body is slidably engaged with and connected to the rotating member, and further, a protrusion protruding along the longitudinal edge of the opening, and the opening Fold in the direction A bent member formed at both ends in the width direction, and the concave member is connected to the connecting protrusion in a state in which a tip end portion of the protruding portion is accommodated inside the concave member. It is attached to the front- end | tip of a part .

請求項２のものは、車両用のシートに取り付けられる台座と、該台座に対して回転可能且つリクライニング可能なシート本体とを備えたチャイルドシートであって、該シート本体の底面と対向する前記台座の上面に形成され、該シート本体の重量を支持する周方向に延びる支持面と、該支持面の内側に設けられた、該台座に対して回転可能な回転部材と、を有し、該回転部材の上面若しくは前記シート本体の底面の何れか一方に形成された連結突部が、該回転部材の上面若しくは該シート本体の底面の何れか他方に形成された長孔形状の開口に挿入された状態で、該シート本体が前記回転部材に対してスライド移動可能に係合連結されており、また、前記台座に対する前記シート本体の回転方向の位置を固定する第１固定手段と、該台座に対する該シート本体のスライド方向の位置を固定する第２固定手段と、を有し、それら第１固定手段及び第２固定手段は、何れも前記台座若しくは前記回転部材に対して係合爪を接近又は離間させる操作部材を有しており、それら第１固定手段の操作部材と第２固定手段の操作部材が前記シート本体の底面にて上下方向に重ねて配置されていることを特徴とする。 According to a second aspect of the present invention, there is provided a child seat comprising a pedestal attached to a vehicle seat and a seat body rotatable and reclining relative to the pedestal, wherein the pedestal faces the bottom surface of the seat body. A rotation surface formed on the upper surface and extending in the circumferential direction for supporting the weight of the seat body; and a rotation member provided on the inner side of the support surface and rotatable with respect to the pedestal. The connecting projection formed on either the top surface of the sheet or the bottom surface of the sheet body is inserted into the long hole-shaped opening formed on the other of the top surface of the rotating member or the bottom surface of the sheet body. in, the seat body being slidably engageable coupled to the rotary member also includes a first fixing means for fixing the position in the rotational direction of the seat body with respect to the pedestal, pair pedestal Second fixing means for fixing the position of the seat body in the sliding direction. Both the first fixing means and the second fixing means approach the engaging claw with respect to the pedestal or the rotating member. Or it has the operation member made to detach | separate, The operation member of these 1st fixing means and the operation member of the 2nd fixing means are arrange | positioned in the up-down direction on the bottom face of the said sheet | seat main body, It is characterized by the above-mentioned.

請求項３のものは、請求項２において、前記第１固定手段の操作部材と前記第２固定手段の操作部材との間には共通のバネ部材が配置されており、前記第１固定手段の操作部材若しくは前記第２固定手段の操作部材の何れか一方は、該バネ部材の下向きの付勢力により、前記係合爪を前記台座若しくは前記回転部材に係合させ、前記第１固定手段の操作部材若しくは前記第２固定手段の操作部材の何れか他方は、該バネ部材の上向きの付勢力により、前記係合爪を前記台座若しくは前記回転部材に係合させるようになしたことを特徴とする。 According to a third aspect of the present invention, in the second aspect , a common spring member is disposed between the operation member of the first fixing means and the operation member of the second fixing means. Either the operating member or the operating member of the second fixing means engages the engaging claw with the pedestal or the rotating member by the downward biasing force of the spring member, and operates the first fixing means. Either the member or the operation member of the second fixing means is configured such that the engaging claw is engaged with the pedestal or the rotating member by the upward biasing force of the spring member. .

以上のように本発明は、シート本体の重量を支持する台座の支持面の内側に回転部材を設けて、回転部材の上面若しくはシート本体の底面の何れか一方に形成された連結突部を、回転部材の上面若しくはシート本体の底面の何れか他方に形成された長孔形状の開口に挿入した状態で、シート本体を回転部材に対してスライド移動可能に係合連結させたことを特徴としたものである。
本発明によれば、開口の長手方向の力がシート本体に作用した場合、長孔形状の開口と、この開口に挿入された連結突部との間に生じる長手方向の隙間に基づいてシート本体を台座に対してスライド移動させることができる。
一方、シート本体に回転方向の力が作用した場合、シート本体に作用した力は開口と連結突部との係合作用により回転部材に伝達され、シート本体及び回転部材は一体に回転する。これにより本発明ではシート本体を台座に対して回転移動させることができる。 As described above, the present invention provides a rotating member on the inside of the support surface of the pedestal that supports the weight of the seat body, and the connection protrusion formed on either the upper surface of the rotating member or the bottom surface of the seat body. The seat body is slidably engaged with and connected to the rotating member in a state of being inserted into an elongated opening formed on either the upper surface of the rotating member or the bottom surface of the seat body. Is.
According to the present invention, when the force in the longitudinal direction of the opening acts on the seat body, the seat body is based on the longitudinal gap formed between the elongated hole-shaped opening and the connecting projection inserted into the opening. Can be slid relative to the pedestal.
On the other hand, when a rotational force is applied to the seat body, the force applied to the seat body is transmitted to the rotating member by the engagement between the opening and the connecting projection, and the seat body and the rotating member rotate together. Thereby, in this invention, a sheet | seat main body can be rotationally moved with respect to a base.

本発明では回転部材よりも外側の位置にシート本体の重量を支持する支持面が設けられているため、回転部材には実質的にシート本体の重量は作用せず、回転部材の薄形化及び軽量化を図ることができる。 In the present invention, since the support surface that supports the weight of the seat body is provided at a position outside the rotating member, the weight of the seat body does not substantially act on the rotating member. Weight reduction can be achieved.

本発明では、台座の支持面の内側に形成された円形の凹所に回転部材を収容し、凹所の内周面に沿って回転部材を回転させるようにすることができる。
回転部材を台座の凹所に収容することでシート本体の底面の位置を低く抑えて、シート本体の重心を低くすることができ、安全性の向上を図ることができる。 In the present invention, to accommodate the rotating member in a circular recess formed on the inner side of the support surface of the pedestal, Ru can be adapted to rotate the rotating member along the inner peripheral surface of the recess.
By accommodating the rotating member in the recess of the pedestal, the position of the bottom surface of the seat body can be kept low, the center of gravity of the seat body can be lowered, and safety can be improved.

この場合において、請求項１では、開口の長手方向の縁部に沿って突出させた突条部と、開口の方向に向かって折り曲げられた折曲げ部が幅方向の両端に形成された凹状部材と、を有し、突条部の先端部分を凹状部材の内部に収容した状態で、凹状部材を連結突部の先端に取り付ける。
この請求項１によれば、少なくとも突条部の基端側は開口に挿入された連結突部によって支持され、突条部の先端側は凹状部材によって支持される。突条部は高さ方向に亘って支持されるため、台座上に載置されているシート本体が左右方向にがたついたり、斜めに傾いたりするのを有効に防止することができる。
またシート本体の底面を含む座面部は、回転部材と凹状部材とで挟まれ、シート本体の回転部材に対する抜けが有効に防止できる。 In this case, according to the first aspect of the present invention, the ridges projecting along the edges in the longitudinal direction of the opening and the concave members formed at both ends in the width direction are bent portions that are bent toward the direction of the opening. If has, in a state of accommodating the tip portion of the protrusion portion inside of the concave member, Ru attaching a concave member to the tip of the coupling projection.
According to the claim 1, the base end side of at least ridge is supported by the connection protrusion that is inserted into the opening, the distal end side of the projecting portion is supported by the concave member. Since the protruding portion is supported in the height direction, it is possible to effectively prevent the seat body placed on the pedestal from rattling in the left-right direction or tilting obliquely.
Further, the seating surface portion including the bottom surface of the seat body is sandwiched between the rotating member and the concave member, and the slipping of the seat body with respect to the rotating member can be effectively prevented.

一方請求項２では、シート本体の回転方向の位置を固定する第1固定手段と、シート本体のスライド方向の位置を固定する第２固定手段と、を設けておく。この場合、それら第１固定手段及び第２固定手段は何れも台座若しくは回転部材に対して係合爪を接近又は離間させる操作部材を有するものとなして、それら第１固定手段の操作部材と第２固定手段の操作部材をシート本体の底面に上下方向に重ねて配置する。
このようにすることで操作部材の設置に要するスペースを少なくすることができる。また第１固定手段の操作面と第２固定手段の操作面とをシート本体の底面にて同じ位置に異なる高さで設けることができるため、操作する大人は手の位置を大きく変えることなく回転操作とリクライニング操作を行うことが可能となり、取扱い性を向上させることができる。 Meanwhile in claim 2, a first fixing means for fixing the position in the rotational direction of the seat body, and a second fixing means for fixing the position of the sliding direction of the seat body, the provided us Ku. In this case, each of the first fixing means and the second fixing means has an operation member that causes the engaging claw to approach or separate from the base or the rotating member. the operating member 2 fixing means you arranged to overlap in a vertical direction to the bottom surface of the seat body.
In this way, the space required for installing the operation member can be reduced. In addition, since the operation surface of the first fixing means and the operation surface of the second fixing means can be provided at the same position on the bottom surface of the seat body and at different heights, the operating adult can rotate without significantly changing the position of the hand. The operation and the reclining operation can be performed, and the handleability can be improved.

この場合、第１固定手段を構成する操作部材及び第２固定手段を構成する操作部材の間に共通のバネ部材を配置してバネ部材を共用化することで、チャイルドシートの部品点数を抑え、軽量化とともに製造コスト低減を図ることができる（請求項３）。
In this case, by arranging a common spring member between the operation member constituting the first fixing means and the operation member constituting the second fixing means to share the spring member, the number of parts of the child seat can be reduced, and the weight can be reduced. As a result, manufacturing costs can be reduced (claim 3 ).

以上のような本発明によれば、台座に対してシート本体を回転可能且つリクライニング可能とする機構をコンパクトで部品点数の少ない構成とし得て、軽量化を図ることが可能なチャイルドシートを提供することができる。 According to the present invention as described above, it is possible to provide a child seat that can reduce the weight by making the mechanism that allows the seat body to rotate and recline with respect to the pedestal compact and have a small number of parts. Can do.

本発明の一実施形態であるチャイルドシートの側面図である。It is a side view of the child seat which is one embodiment of the present invention. 図１のチャイルドシートの分解斜視図である。It is a disassembled perspective view of the child seat of FIG. 図１のシート本体の座面部を拡大して示した図である。It is the figure which expanded and showed the seat surface part of the sheet | seat main body of FIG. 操作部材が取り付けられた状態のシート本体の底面図である。It is a bottom view of the sheet body with the operation member attached. 図２の台座及び回転部材を分離して示した斜視図である。It is the perspective view which isolate | separated and showed the base and rotation member of FIG. 同実施形態における台座の部分断面図である。It is a fragmentary sectional view of the base in the embodiment. 同実施形態における回転部材を示した図である。It is the figure which showed the rotation member in the same embodiment. 図７のＣ−Ｃ断面図である。It is CC sectional drawing of FIG. 同実施形態におけるシート本体が台座に組み付けられた状態での部分断面図である。It is a fragmentary sectional view in the state where the sheet main part in the embodiment was attached to the base. 同実施形態におけるシート本体の開口周りを拡大して示した図である。It is the figure which expanded and showed the surroundings of the opening of the sheet | seat main body in the same embodiment. 同実施形態の変形例を示した図である。It is the figure which showed the modification of the embodiment. 同実施形態におけるスライド位置固定手段の操作部材を示した図である。It is the figure which showed the operation member of the slide position fixing means in the same embodiment. 同実施形態における回転位置固定手段の操作部材を示した図である。It is the figure which showed the operation member of the rotation position fixing means in the embodiment. 同実施形態におけるガイドレールを示した図である。It is the figure which showed the guide rail in the embodiment. 同実施形態のスライド位置固定手段の作用説明図である。It is operation | movement explanatory drawing of the slide position fixing means of the embodiment. 同実施形態の回転位置固定手段の作用説明図である。It is operation | movement explanatory drawing of the rotation position fixing means of the embodiment.

次に本発明の実施形態を図面に基づいて詳しく説明する。
本実施形態のチャイルドシートＳは図１に示すように、車両用のシートに取り付けられる台座１２と、この台座１２に対して回転可能且つリクライニング可能なシート本体１４を備えている。
尚、本実施形態では、前後方向は特に断らない限り、シート本体１４に乳幼児を着座させた状態での乳幼児の前側を前方として説明する。 Next, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the child seat S of the present embodiment includes a pedestal 12 attached to a vehicle seat, and a seat body 14 that can rotate with respect to the pedestal 12 and can be reclined.
In the present embodiment, the front side of the infant in a state where the infant is seated on the seat body 14 will be described as the front unless otherwise specified in the front-rear direction.

シート本体１４は、合成樹脂製のシェル部１６を有し、このシェル部１６の内側に発泡材からなる図示しないクッション材を取り付け、シェル部１６とクッション材との外表面側を図示しないシートカバーによって覆われて構成されている。
シート本体１４は着座した乳幼児の周囲を前側と上側とを除いて覆うように湾曲して構成されるもので、シート本体１４の内側にはシート本体１４に着座させた乳幼児を固定させるための図示しないショルダーベルトとバックルとが配置されている。 The seat body 14 has a shell portion 16 made of synthetic resin, a cushion material (not shown) made of a foam material is attached to the inside of the shell portion 16, and a seat cover (not shown) on the outer surface side of the shell portion 16 and the cushion material. Consists of covered by.
The seat body 14 is configured to be curved so as to cover the seated infant except for the front side and the upper side. The seat body 14 is illustrated inside the seat body 14 for fixing the infant seated on the seat body 14. Shoulder shoulder belt and buckle are arranged.

シェル部１６は合成樹脂製の一体成型品とされている。本実施形態の場合、シェル部１６はポリプロピレン（ＰＰ）製とされるもので乳幼児の下面側から後面側にかけて覆う座面部１８と、乳幼児の左右の側方を覆う側壁部２０と、乳幼児の後方を覆う背面部２２と、を備えている。この背面部２２には上下方向に高さ調整可能なヘッドレスト２４が取り付けられている。 The shell portion 16 is an integrally molded product made of synthetic resin. In the case of the present embodiment, the shell portion 16 is made of polypropylene (PP) and covers a seat surface portion 18 that covers from the lower surface side to the rear surface side of the infant, a side wall portion 20 that covers the left and right sides of the infant, and the rear of the infant. And a back surface portion 22 for covering. A headrest 24 whose height is adjustable in the vertical direction is attached to the back surface portion 22.

１３は台座１２の背面下部から後方に突き出した一対のアームである。本例のチャイルドシートでは、アーム１３の内部に設けられたフックを、車両用シートの側に用意されたＩＳＯ−ＦＩＸ方式のクランプバーに係合させることで、台座１２を車体側（車両用シートの側）に連結することができる。このアーム１３は台座１２に対して回動可能に設けられており、使用しない場合には台座１２の内部に収納することが可能である。
また本例のチャイルドシートＳは、台座１２の底面に図示を省略したサポートレッグが設けられている。チャイルドシートＳが車両用シートに固定された状態でこのサポートレッグを、車両フロア上に起立させることで、前面衝突時等におけるチャイルドシートの前方への回動を防止し、チャイルドシートの安全性の向上を図ることができる。 Reference numeral 13 denotes a pair of arms protruding rearward from the lower back of the base 12. In the child seat of this example, the hook provided in the arm 13 is engaged with an ISO-FIX type clamp bar prepared on the vehicle seat side, so that the pedestal 12 is placed on the vehicle body side (vehicle seat side). Side). The arm 13 is provided so as to be rotatable with respect to the pedestal 12 and can be housed inside the pedestal 12 when not in use.
Moreover, the child seat S of this example is provided with a support leg (not shown) on the bottom surface of the base 12. By raising the support leg on the vehicle floor while the child seat S is fixed to the vehicle seat, the child seat is prevented from rotating forward at the time of a frontal collision or the like, and the safety of the child seat is improved. be able to.

図３（Ａ）はシート本体１４の座面部１８を拡大して示した平面図、図３（Ｂ）は座面部１８の断面図である。図３（Ａ）で示すように座面部１８には、前面側の端部近傍から背面部２２に向かって前後方向に延びる長孔形状の４つの開口２８，２９，３０，３１が、後述するシート本体１４の回転中心軸Ｐを挟んで右側と左側とに分かれて形成されている。これら開口２８，２９，３０，３１は何れも幅ｔ₁が同一で、図中左側の開口２８，２９は同一の線上に配置され、また図中右側の開口３０，３１も同一の線上に配置されている。
これら開口２８，２９，３０，３１の図中左右方向の両側には、各開口の長手方向の縁部に沿って前後方向（図３（Ａ）の上下方向）に連続的に延びる突条部３２，３３，３４，３５が形成されている。尚、３６は回転位置固定手段に用いられる操作面８６を配置するための開口である。 FIG. 3A is an enlarged plan view showing the seat surface portion 18 of the seat body 14, and FIG. 3B is a cross-sectional view of the seat surface portion 18. As shown in FIG. 3A, the seat surface portion 18 has four long holes 28, 29, 30, 31 extending in the front-rear direction from the vicinity of the front-side end portion toward the back surface portion 22, which will be described later. The sheet main body 14 is divided into a right side and a left side with the rotation center axis P interposed therebetween. These openings 28, 29, 30, and 31 all have the same width t ₁ , the openings 28 and 29 on the left side in the figure are arranged on the same line, and the openings 30 and 31 on the right side in the figure are also arranged on the same line. Has been.
On both sides of the openings 28, 29, 30, and 31 in the left-right direction in the figure, protrusions that continuously extend in the front-rear direction (vertical direction in FIG. 3A) along the longitudinal edge of each opening. 32, 33, 34, and 35 are formed. Reference numeral 36 denotes an opening for arranging an operation surface 86 used for the rotational position fixing means.

図３（Ｂ）で示すようにシート本体１４の座面部１８裏側には前後方向に延びる凹所３７，３８，３９が形成されており、このうち最も幅広の中央部に設けられた凹所３８には後述する位置固定用の操作部材が取り付けられる。
そして座面部１８の裏側において凹所３７，３８，３９及び開口２８，２９，３０，３１を除く部分は、台座１２に向かって球面半径Ｒの凸曲面をなしている。 As shown in FIG. 3B, recesses 37, 38, 39 extending in the front-rear direction are formed on the back side of the seat surface portion 18 of the seat body 14, and among these, the recess 38 provided in the widest central portion. An operation member for fixing the position to be described later is attached to.
Further, on the back side of the seat surface portion 18, the portions excluding the recesses 37, 38, 39 and the openings 28, 29, 30, 31 form a convex curved surface having a spherical radius R toward the pedestal 12.

各開口２８，２９，３０，３１の長手方向の縁部は、シート本体１４を真っ直ぐに立てた状態でその先端面の高さＨが揃うように上向きに突出し、それぞれ突条部３２，３３，３４，３５が形成されている。ただし座面部１８の底面は図中左右方向に曲面状であるため、座面部１８の底面から突条部の先端までの突出高さは、中央寄りに位置する突条部３３，３４が大きく、側面側に位置する突条部３２，３５が小さくなっている。
また座面部１８の底面は前後方向にも曲面状をなしており、各突条部は前後方向にその突出高さを一定に維持して図２で示すように前後方向に円弧状をなしている。 The longitudinal edges of the openings 28, 29, 30, 31 protrude upward so that the heights H of the front end surfaces are aligned in a state where the sheet main body 14 is upright, and the ridges 32, 33, 34 and 35 are formed. However, since the bottom surface of the seat surface portion 18 is curved in the left-right direction in the figure, the protrusion height from the bottom surface of the seat surface portion 18 to the tip of the protrusion portion is large in the protrusion portions 33 and 34 located near the center. The protrusions 32 and 35 located on the side surface side are small.
Further, the bottom surface of the seat surface portion 18 is also curved in the front-rear direction, and each protrusion has a circular arc shape in the front-rear direction as shown in FIG. Yes.

台座１２は、図５，６に示すように上下方向に２分割可能で、台座上部４６と台座下部４７とで構成されている。これらはそれぞれ合成樹脂により一体成形されている。図２でも示すようにシート本体１４の底面側（座面部１８の裏側）と対向する面には環状の支持面２６が形成され、支持面２６は、シート本体１４の座面部１８の裏側と当接し、シート本体１４を支持している。この支持面２６は凹曲面をなしており、その球面半径Ｒの値はシート本体１４側の凸曲面と同じである。シート本体１４は台座１２に対して回転移動する際、またスライド移動する際、支持面２６上を摺動する。 As shown in FIGS. 5 and 6, the pedestal 12 can be divided into two in the vertical direction, and includes a pedestal upper part 46 and a pedestal lower part 47. Each of these is integrally formed of a synthetic resin. As shown in FIG. 2, an annular support surface 26 is formed on the surface facing the bottom surface side (the back side of the seat surface portion 18) of the seat body 14, and the support surface 26 contacts the back side of the seat surface portion 18 of the seat body 14. The sheet body 14 is supported. The support surface 26 has a concave curved surface, and the value of the spherical radius R thereof is the same as that of the convex curved surface on the seat body 14 side. The seat body 14 slides on the support surface 26 when rotating and sliding with respect to the base 12.

支持面２６の前後方向及び左右方向には各９０°間隔でシート本体１４の回転方向の移動を防止するための被係合溝４８が形成されている。これら被係合溝４８の溝深さは前後方向の溝で深く、左右方向の溝で浅く形成されている。
また支持面２６の内側には上向きに円形の開口を有する凹所４２が形成され、その内部に回転部材４４が回転可能に収容されている。 Engaged grooves 48 for preventing movement of the sheet body 14 in the rotational direction are formed at intervals of 90 ° in the front-rear direction and the left-right direction of the support surface 26. The groove depths of these engaged grooves 48 are deep in the front-rear direction groove and shallow in the left-right direction groove.
A recess 42 having a circular opening upward is formed inside the support surface 26, and a rotating member 44 is rotatably accommodated therein.

回転部材４４は、図７に示すように全体が円板形状をなしている。５０は平面視円形で断面が略凹曲面形状の主面部である。主面部５０の外周端部は図７（Ｂ）で示すように下向きに立ち下がっており一定の高さを有する周壁部５２が形成されている。また周壁部５２の下端には外向きに延びる鍔部５４が一体に形成されている。 As shown in FIG. 7, the entire rotating member 44 has a disk shape. Reference numeral 50 denotes a main surface portion having a circular shape in plan view and a substantially concave curved cross section. As shown in FIG. 7B, the outer peripheral end portion of the main surface portion 50 falls downward, and a peripheral wall portion 52 having a certain height is formed. A flange 54 extending outward is integrally formed at the lower end of the peripheral wall 52.

主面部５０の上面には、図７（Ａ）の平面視において図中左右方向に延びる４つの連結突部５５，５６，５７，５８が形成されている。これら連結突部は外形が平面視長円形状をなしており、その短手幅方向の厚みｔ₂が同一である。連結突部の厚みｔ₂は、連結突部５５，５６，５７，５８がシート本体１４の開口２８，２９，３０，３１に挿入可能となるよう開口の幅ｔ₁よりも僅かに小さく設定されている。
図中上側の連結突部５５，５６は同一の線上に配置され、また図中下側の連結突部５７，５８も同一の線上に配置されている。連結突部は同一の線上に配置された２つが一組となって、図１４（Ｂ）で示すようにその上面に後述するガイドレール４０が取り付けられる。
５９は連結突部５５，５６，５７，５８の上面に設けられたガイドレール４０を締結固定するための雌ねじ孔である。 On the upper surface of the main surface portion 50, four connecting projections 55, 56, 57, 58 extending in the left-right direction in the drawing in the plan view of FIG. These connecting protrusions have an oval outer shape in plan view, and have the same thickness t _{2 in the} short width direction. The thickness t ₂ of the connecting protrusion is set slightly smaller than the width t _{1 of the} opening so that the connecting protrusions 55, 56, 57, 58 can be inserted into the openings 28, 29, 30, 31 of the seat body 14. ing.
The upper connection protrusions 55 and 56 in the figure are arranged on the same line, and the lower connection protrusions 57 and 58 in the figure are also arranged on the same line. A pair of connecting protrusions are arranged on the same line, and a guide rail 40 described later is attached to the upper surface thereof as shown in FIG. 14 (B).
Reference numeral 59 denotes a female screw hole for fastening and fixing the guide rail 40 provided on the upper surfaces of the connecting protrusions 55, 56, 57 and 58.

また主面部５０には後述する回転位置固定手段の係合爪９０と係合可能な被係合溝６０が図中左側の外周端部から中心部に向かって形成されている。
更に被係合溝６０の図中上下方向の両側には、後述するスライド位置固定手段の係合爪８０と係合可能な貫通孔６２がそれぞれ図中左右方向に５個ずつ並設されている（図８参照）。尚、貫通孔６２の数については必要に応じて適宜変更可能である。
並設された貫通孔６２のうち最も内側に位置する貫通孔の更に内側（中心部寄り）には主面部５０の上面から突出するガイド片６３が、また最も外側に位置する貫通孔の更に外側には主面部５０の上面から突出するガイド片６５が形成されている。これらガイド片６３，６５は端に位置する貫通孔への係合爪８０の挿入を補助するものである。
尚、６４は主面部５０の底面に形成されたリブである。
この回転部材４４もまた合成樹脂にて一体に成形されている。 Further, an engaged groove 60 that can be engaged with an engaging claw 90 of a rotational position fixing means described later is formed on the main surface portion 50 from the outer peripheral end portion on the left side in the drawing toward the center portion.
Furthermore, five through holes 62 that can be engaged with engaging claws 80 of a slide position fixing means (described later) are provided in parallel in the left and right direction in the drawing on both sides of the engaged groove 60 in the vertical direction in the drawing. (See FIG. 8). In addition, about the number of the through-holes 62, it can change suitably as needed.
A guide piece 63 that protrudes from the upper surface of the main surface portion 50 is located further inside (near the center) of the innermost through-hole 62 among the side-by-side through-holes 62, and further outside the through-hole located on the outermost side. A guide piece 65 protruding from the upper surface of the main surface portion 50 is formed. These guide pieces 63 and 65 assist the insertion of the engaging claws 80 into the through holes located at the ends.
Reference numeral 64 denotes a rib formed on the bottom surface of the main surface portion 50.
The rotating member 44 is also integrally formed of synthetic resin.

図６は組み付け状態における台座１２および回転部材４４を示した図で、シート本体１４及びガイドレール４０は図示を省略されている。同図で示すように回転部材４４が凹所４２の内部に収容された状態で、回転部材４４の周壁部５２の外周面は、台座上部４６に形成された凹所４２の内周面４３と対向した状態で配置され、回転部材４４は凹所４２の内周面４３に沿って案内され、凹所４２の中心軸Ｐ周りに回転可能とされている。
凹所４２は下方位置でその収容空間が内周面４３よりも更に外側に拡張され、部分拡大図で示すように内周面４３より外側の収容空間に回転部材４４の鍔部５４が収容されている。このため組み付け後において回転部材４４に図中上向きの力が作用したとしても、鍔部５４が台座上部４６と係合して、回転部材４４が台座１２からの抜け出すのを良好に防止できる。 FIG. 6 is a view showing the base 12 and the rotating member 44 in the assembled state, and the seat body 14 and the guide rail 40 are not shown. As shown in the figure, the outer peripheral surface of the peripheral wall portion 52 of the rotating member 44 is in the state in which the rotating member 44 is accommodated in the recess 42, and the inner peripheral surface 43 of the recess 42 formed in the pedestal upper portion 46. The rotating member 44 is arranged along the inner peripheral surface 43 of the recess 42 and is rotatable around the central axis P of the recess 42.
The accommodation space of the recess 42 is expanded further outward than the inner circumferential surface 43 at a lower position, and the flange portion 54 of the rotating member 44 is accommodated in the accommodation space outside the inner circumferential surface 43 as shown in the partial enlarged view. ing. For this reason, even if an upward force in the figure acts on the rotating member 44 after assembly, it is possible to satisfactorily prevent the flange member 54 from engaging with the pedestal upper portion 46 and the rotating member 44 from coming out of the pedestal 12.

４０は凹状部材としてのガイドレールで、図１４で示すように幅方向の両端に形成された左右一対の折曲げ部６６，６６とこれらを連結する基部６７とからなり、全体として断面略コ字形状をなしている。またガイドレール４０は長手方向において円弧状をなしている。基部６７の中心部には長手方向に４箇所、取り付け固定用の平面部６８が形成され、そこに固定用のねじを挿通させるための孔６９が設けられている。 Reference numeral 40 denotes a guide rail as a concave member, which comprises a pair of left and right bent portions 66 and 66 formed at both ends in the width direction and a base portion 67 connecting them, as shown in FIG. It has a shape. The guide rail 40 has an arc shape in the longitudinal direction. At the central portion of the base 67, four flat portions 68 for mounting and fixing are formed in the longitudinal direction, and holes 69 for inserting fixing screws are provided therein.

次にシート本体１４と回転部材４４との連結構造について説明する。
本例では、図３の２点鎖線で示されているように回転部材４４に形成された連結突部５５，５６，５７，５８が、シート本体１４に形成された前後方向に延びる長孔形状の開口２８，２９，３０，３１にそれぞれ挿入される。このためシート本体１４に前後方向の力が作用した場合、シート本体１４は、長孔形状の開口２８，２９，３０，３１と連結突部５５，５６，５７，５８との間に生じた前後方向の隙間に基づいて、前後方向にスライド移動することができる。
ここで、凸曲面をなすシート本体１４の底面は、凹曲面をなす台座１２の支持面２６で支持されており、シート本体１４が支持面２６で支持された状態でスライド移動するとシート本体１４の傾倒角度が変化してリクライニング機能が発揮される。
尚、本例では連結突部５５，５６，５７，５８が長孔形状の開口２８，２９，３０，３１の開口端部に当接することでシート本体１４の前後方向の移動端が規定される。 Next, a connection structure between the seat body 14 and the rotating member 44 will be described.
In this example, as shown by a two-dot chain line in FIG. 3, the connecting projections 55, 56, 57, 58 formed on the rotating member 44 are elongated holes formed in the seat body 14 and extending in the front-rear direction. Are inserted into the openings 28, 29, 30, 31 respectively. Therefore, when a longitudinal force is applied to the seat body 14, the seat body 14 is generated between the elongated holes 28, 29, 30, 31 and the connecting projections 55, 56, 57, 58. Based on the gap in the direction, it can slide in the front-rear direction.
Here, the bottom surface of the sheet main body 14 having a convex curved surface is supported by the support surface 26 of the pedestal 12 having a concave curved surface, and when the sheet main body 14 is slid and moved while being supported by the support surface 26, The tilt angle changes and the reclining function is demonstrated.
In this example, the connecting projections 55, 56, 57, and 58 are in contact with the opening ends of the long hole-shaped openings 28, 29, 30, and 31, whereby the moving end of the seat body 14 in the front-rear direction is defined. .

一方、連結突部５５，５６，５７，５８と開口２８，２９，３０，３１との間に左右方向の隙間は実質的には存在しない若しくは極めて小さい。このためシート本体１４に回転方向の力が作用した場合、シート本体１４に作用した力は開口２８，２９，３０，３１と連結突部５５，５６，５７，５８との係合作用により回転部材４４に伝達され、台座１２に対して回転自在に設けられた回転部材４４と一体にシート本体１４は回転する。これにより本実施形態ではシート本体１４を図６で示す中心軸Ｐ周りに回転させることができる。 On the other hand, there are substantially no or very small gaps in the left-right direction between the connecting projections 55, 56, 57, 58 and the openings 28, 29, 30, 31. Therefore, when a rotational force is applied to the seat body 14, the force applied to the seat body 14 is caused by the engaging action between the openings 28, 29, 30, 31 and the connecting projections 55, 56, 57, 58. The sheet main body 14 rotates integrally with a rotation member 44 that is transmitted to the rotation base 44 and is rotatably provided to the base 12. Thereby, in this embodiment, the sheet | seat main body 14 can be rotated to the surroundings of the central axis P shown in FIG.

また本例では、連結突部５５，５６，５７，５８を開口２８，２９，３０，３１にそれぞれ挿入させた状態で、同一の線上に位置する２つの連結突部５５，５６とその両側に位置し線状に延びる突条部３２，３３とを上から覆うように１つのガイドレール４０を配置し、ねじ部材にてこのガイドレール４０を連結突部５５，５６の上面に取り付けている。図１０（Ａ）は連結突部５５にガイドレール４０が取り付けられた状態を示した図である。
同図で示すように連結突部５５と開口側に向かって折曲げられた折曲げ部６６との間には、ガイドレール４０の基部６７と回転部材４４の主面部５０とにより高さ方向が規定され、ガイドレール４０の折曲げ部６６と回転部材４４の連結突部５５とにより幅方向が規定された隙間Ｑが形成される。
本例では図中左側の隙間Ｑ₁にシート本体の突条部３２が、図中右側の隙間Ｑ₂にシート本体１４の突条部３３が収容可能なように連結突部５５，５６の高さが定められており、シート本体１４は突条部３２，３３が隙間Ｑ₁，Ｑ₂に収容された状態で回転部材４４に対してスライド移動可能となっている。 In this example, the connecting protrusions 55, 56, 57, and 58 are inserted into the openings 28, 29, 30, and 31, respectively, and the two connecting protrusions 55 and 56 that are located on the same line and on both sides thereof. One guide rail 40 is disposed so as to cover the linearly extending protrusions 32 and 33 positioned from above, and the guide rail 40 is attached to the upper surfaces of the connecting protrusions 55 and 56 by screw members. FIG. 10A is a view showing a state in which the guide rail 40 is attached to the connecting protrusion 55.
As shown in the figure, the height direction is set between the connecting protrusion 55 and the bent portion 66 bent toward the opening side by the base portion 67 of the guide rail 40 and the main surface portion 50 of the rotating member 44. A gap Q defined by the bent portion 66 of the guide rail 40 and the connecting projection 55 of the rotating member 44 is defined.
In this example protrusions 32 of the seat body in the gap to Q ₁ the left side in the figure, high protrusions 33 can accommodate a manner connecting projections 55, 56 of the seat body 14 in the gap Q ₂ on the right side of the figure The sheet body 14 is slidable relative to the rotating member 44 in a state where the ridges 32 and 33 are accommodated in the gaps Q ₁ and Q ₂ .

ここで本例では突条部３２，３３が連結突部５５と折曲げ部６６とにより両側から高さ方向に亘って支持されるため、台座１２上に載置されているシート本体１４が左右方向にがたついたり、シート本体が斜め方向に傾いたりするのを有効に防止することができる。
本例では図１０（Ｂ）で示すように連結突部５５，５６が存在しない部分に位置する突条部３２，３３についても一対の折曲げ部６６，６６で外側から支持しているため連結突部５５，５６が存在しない部分においても折曲げ部６６，６６によるガイド作用が発揮される。
また本例のようなガイドレール４０を設けることで、シート本体１４に上向きの力が作用した場合であってもシート本体１４の突条部３２，３３がガイドレール４０の基部６７と係合してシート本体１４の抜けが防止される。
以上は連結突部５５，５６にガイドレール４０を取り付けた例について述べたが、連結突部５７，５８に対しても同様にガイドレール４０が取り付けられる。 Here, in this example, since the protrusions 32 and 33 are supported by the connecting protrusion 55 and the bent part 66 from both sides in the height direction, the sheet main body 14 placed on the base 12 is left and right. It is possible to effectively prevent rattling in the direction and tilting of the sheet body in an oblique direction.
In this example, as shown in FIG. 10 (B), the protrusions 32 and 33 located at the portions where the connection protrusions 55 and 56 do not exist are also supported from the outside by the pair of bent portions 66 and 66, so that the connection is made. Even in a portion where the protrusions 55 and 56 do not exist, the guide action by the bent portions 66 and 66 is exhibited.
Further, by providing the guide rail 40 as in this example, even when an upward force is applied to the seat body 14, the protrusions 32 and 33 of the seat body 14 are engaged with the base 67 of the guide rail 40. This prevents the sheet body 14 from coming off.
The example in which the guide rail 40 is attached to the connecting protrusions 55 and 56 has been described above, but the guide rail 40 is similarly attached to the connecting protrusions 57 and 58.

尚、ガイドレールによる突条部の支持構造は、これに限定されるものではなく例えば図１１で示すように、突条部３２，３３の基端側を連結突部９９で支持する一方、突条部３２，３３の先端側をガイドレール４１で支持し、連結突部９９とガイドレール４１でそれぞれ突条部３２，３３の異なる高さを支持するようにしてもよい。 In addition, the support structure of the protrusion part by a guide rail is not limited to this, For example, as shown in FIG. 11, while the base end side of the protrusion parts 32 and 33 is supported by the connection protrusion 99, protrusions are supported. The leading ends of the strips 32 and 33 may be supported by the guide rail 41, and the connecting projection 99 and the guide rail 41 may support different heights of the strips 32 and 33, respectively.

図４はシート本体１４の座面部１８の底面を示した図である。
座面部１８の底面に形成された凹所３８の左右方向の両側壁面７０，７１の対称位置には係止孔７２，７２が形成され、シート本体１４のスライド方向の位置を固定するための操作部材７８が係止孔７２，７２に揺動可能に取り付けられている。
また凹所３８の左右方向の両側壁面７０，７１の係止孔７２よりも背面側の位置には係止孔７４，７４が形成され、シート本体１４の回転方向の位置を固定するための操作部材８８が係止孔７４，７４に揺動可能に取り付けられている。同図で示すように、これら２つの操作部材７８と８８は上下方向に重ねて配置されている。 FIG. 4 is a view showing the bottom surface of the seat surface portion 18 of the seat body 14.
Locking holes 72 and 72 are formed at the symmetrical positions of the left and right side wall surfaces 70 and 71 of the recess 38 formed on the bottom surface of the seat surface portion 18, and an operation for fixing the position of the seat body 14 in the sliding direction. A member 78 is swingably attached to the locking holes 72 and 72.
Lock holes 74 and 74 are formed at positions on the back side of the lock holes 72 of the side wall surfaces 70 and 71 in the left and right direction of the recess 38, and an operation for fixing the position of the seat body 14 in the rotational direction. A member 88 is swingably attached to the locking holes 74 and 74. As shown in the figure, these two operation members 78 and 88 are arranged so as to overlap in the vertical direction.

図１２はスライド位置固定用の操作部材７８を示した図である。
８２，８２は離間して設けられた一対のレバーアームで、互いに対象形状をなしている。レバーアーム８２は、先端側（図中右側）に下向きに突出する係合爪８０を有し、後端側に操作面８６が一体に設けられている。係合爪８０の内側側面には、回転部材４４のガイド片６５に当接する突部８１が形成されている。
レバーアーム８２の左右方向の略中間部には外側に突出する係止ピン８３が形成されており、この係止ピン８３がシート本体１４側の係止孔７２に挿入され、操作部材７８は係止ピン８３周りに揺動可能に保持される。 FIG. 12 is a view showing the operation member 78 for fixing the slide position.
Reference numerals 82 and 82 denote a pair of lever arms that are spaced apart from each other and have a target shape. The lever arm 82 has an engaging claw 80 projecting downward on the front end side (right side in the figure), and an operation surface 86 is integrally provided on the rear end side. A protrusion 81 that abuts against the guide piece 65 of the rotating member 44 is formed on the inner side surface of the engaging claw 80.
A locking pin 83 that protrudes outward is formed at a substantially middle portion of the lever arm 82 in the left-right direction. The locking pin 83 is inserted into the locking hole 72 on the seat body 14 side, and the operation member 78 is engaged. It is held so as to be swingable around the stop pin 83.

係止ピン８３と操作面８６との間の位置には一対のレバーアーム８２を連結する連結部８４が設けられている。連結部８４にはバネ受け部８５が形成されており、組み付け状態において図９で示すように操作部材７８に付勢力を付与するバネ８７の一端がこのバネ受け部８５にて保持される。
本例ではこの操作部材７８とバネ８７と回転部材４４に設けられた貫通孔６２にてスライド位置固定手段が構成されている。 A connecting portion 84 that connects the pair of lever arms 82 is provided at a position between the locking pin 83 and the operation surface 86. A spring receiving portion 85 is formed in the connecting portion 84, and one end of a spring 87 that applies a biasing force to the operation member 78 in the assembled state is held by the spring receiving portion 85 as shown in FIG.
In this example, the operation member 78, the spring 87, and the through hole 62 provided in the rotating member 44 constitute a slide position fixing means.

図１３は回転位置固定用の操作部材８８を示した図である。
９２は全体がＹ字形状をなすレバーアームで、図中右側の二又に分岐した各分岐アーム９７の先端側には外向きに突出する係止ピン９３が形成されている。この係止ピン９３がシート本体１４側の係止孔７４に挿入され、操作部材８８は係止ピン９３周りに揺動可能に保持される。
レバーアーム９２の係止ピン９３とは反対側の端部には操作面９６が一体に設けられている。
レバーアーム９２の下面からは厚みが一定で平板状の係合爪９０が下向きに突出している。係合爪９０はＹ字状のレバーアーム９２の操作面９６側の端部からＹ字の基部に相当する部分に沿って直線状に延びており、その先端は円弧形状をなしている。 FIG. 13 is a view showing an operation member 88 for fixing the rotational position.
Reference numeral 92 denotes a lever arm having a Y-shape as a whole, and a locking pin 93 protruding outward is formed on the distal end side of each bifurcated branch arm 97 on the right side in the drawing. The locking pin 93 is inserted into the locking hole 74 on the sheet main body 14 side, and the operation member 88 is held to be swingable around the locking pin 93.
An operation surface 96 is integrally provided at the end of the lever arm 92 opposite to the locking pin 93.
From the lower surface of the lever arm 92, a flat engagement claw 90 having a constant thickness protrudes downward. The engaging claw 90 extends linearly from the end of the Y-shaped lever arm 92 on the operation surface 96 side along the portion corresponding to the Y-shaped base, and its tip has an arc shape.

レバーアーム９２の操作面９６に向かう部分には、斜め上向きに折れ曲がった屈曲部９４が形成されており、その上面にはバネ受け部９５が形成されている。図９で示すように組み付け状態においてバネ８７の一端がこのバネ受け部９５にて保持される。
本例ではこの操作部材８８、バネ８７、台座１２に設けられた被係合溝４８、回転部材４４に設けられた被係合溝６０にて回転位置固定手段が構成されている。 A bent portion 94 that is bent obliquely upward is formed on a portion of the lever arm 92 that faces the operation surface 96, and a spring receiving portion 95 is formed on the upper surface thereof. As shown in FIG. 9, one end of the spring 87 is held by the spring receiving portion 95 in the assembled state.
In this example, the operating position 88, the spring 87, the engaged groove 48 provided in the base 12, and the engaged groove 60 provided in the rotating member 44 constitute rotational position fixing means.

図９は回転位置固定手段及びスライド位置固定手段によりシート本体１４が台座１２に位置固定された状態の断面図である。
スライド位置固定手段の操作部材７８は係止孔７２（図４）の位置において係止ピン８３周りに揺動可能に支持されている。回転位置固定手段の操作部材８８は係止孔７４（図４）の位置において係止ピン９３周りに揺動可能に支持されている。 FIG. 9 is a cross-sectional view showing a state in which the position of the seat body 14 is fixed to the base 12 by the rotation position fixing means and the slide position fixing means.
The operation member 78 of the slide position fixing means is supported to be swingable around the locking pin 83 at the position of the locking hole 72 (FIG. 4). The operation member 88 of the rotational position fixing means is supported so as to be swingable around the locking pin 93 at the position of the locking hole 74 (FIG. 4).

これら２つの操作部材７８．８８の間にはバネ８７が設けられている。詳しくは、操作部材７８のバネ受け部８５と操作部材８８のバネ受け部９５との間にバネ８７が介装されている。
このバネ８７の上向きの付勢力により、操作部材７８は係止ピン８３周りを図中時計方向に揺動し、係合爪８０は回転部材４４側に突出する。一方、操作部材８８はバネ８７の下向きの付勢力により係止ピン９３周りを図中反時計方向に揺動し、係合爪９０は台座１２側に突出する。
尚、操作部材７８の操作面８６は、開口３６を通じて上方から下向きに押し下げ操作可能な位置に配置されている。また操作部材８８の操作面９６は、操作面８６の下方に位置しており、下方から上向きに押し上げ操作が可能とされている。 A spring 87 is provided between these two operating members 78.88. Specifically, a spring 87 is interposed between the spring receiving portion 85 of the operating member 78 and the spring receiving portion 95 of the operating member 88.
Due to the upward biasing force of the spring 87, the operating member 78 swings around the locking pin 83 in the clockwise direction in the figure, and the engaging claw 80 protrudes toward the rotating member 44. On the other hand, the operating member 88 swings around the locking pin 93 by the downward biasing force of the spring 87 in the counterclockwise direction in the figure, and the engaging claw 90 protrudes toward the base 12 side.
The operation surface 86 of the operation member 78 is disposed at a position where the operation surface 86 can be pushed downward from above through the opening 36. The operation surface 96 of the operation member 88 is located below the operation surface 86 and can be pushed upward from below.

スライド位置固定手段では図１５（Ａ）で示すようにバネ８７の付勢力により回転部材４４側に突出した係合爪８０が、回転部材４４に設けられた貫通孔６２に係合することで、シート本体１４がスライド方向（シート本体１４の前後方向）に位置固定される。
ここで図１５（Ｂ）で示すようにバネ８７の付勢力に抗して操作面８６を下向きに押し下げると、操作部材７８は反時計方向に揺動して係合爪８０が貫通孔６２から離間して係合状態が解除される。これによりシート本体１４は、支持面２６上を図中矢印方向にスライド移動が可能となる。 In the slide position fixing means, as shown in FIG. 15A, the engaging claw 80 protruding toward the rotating member 44 by the biasing force of the spring 87 is engaged with the through hole 62 provided in the rotating member 44. The position of the seat body 14 is fixed in the sliding direction (the front-rear direction of the seat body 14).
Here, as shown in FIG. 15B, when the operating surface 86 is pushed downward against the urging force of the spring 87, the operating member 78 swings counterclockwise, and the engaging claw 80 moves from the through hole 62. After being separated, the engaged state is released. As a result, the seat body 14 can slide on the support surface 26 in the direction of the arrow in the figure.

一方、回転位置固定手段では図１６（Ａ）で示すようにバネ８７の付勢力により台座１２側に突出した係合爪９０が、台座１２の被係合溝４８と回転部材４４の被係合溝６０とに跨って係合することで、シート本体１４は回転方向に位置固定される。
ここで図１６（Ｂ）で示すようにバネ８７の付勢力に抗して操作面９６を上向きに押し上げると、操作部材８８は時計方向に揺動して係合爪９０は被係合溝４８から離間して係合状態が解除され、シート本体１４は図６で示す中心軸Ｐ周りに回転移動が可能となる。 On the other hand, in the rotation position fixing means, as shown in FIG. 16A, the engaging claw 90 protruding toward the pedestal 12 side by the biasing force of the spring 87 causes the engaged groove 48 of the pedestal 12 and the engaged member of the rotating member 44 to be engaged. By engaging over the groove 60, the position of the sheet body 14 is fixed in the rotational direction.
Here, as shown in FIG. 16B, when the operating surface 96 is pushed upward against the biasing force of the spring 87, the operating member 88 swings clockwise and the engaging claw 90 engages with the engaged groove 48. The seat body 14 is released from the engagement state, and the seat body 14 can be rotated around the central axis P shown in FIG.

以上のように本実施形態によれば、回転部材４４よりも外側の位置に、シート本体１４の重量を支持する支持面２６が設けられているため、回転部材４４には実質的にシート本体１４の重量は作用せず、回転部材４４の薄形化及び軽量化を図ることができる。 As described above, according to the present embodiment, since the support surface 26 that supports the weight of the sheet main body 14 is provided at a position outside the rotation member 44, the rotation member 44 substantially has the sheet main body 14. Thus, the rotating member 44 can be made thinner and lighter.

本実施形態では、台座１２の支持面２６の内側に形成された円形の凹所４２に回転部材４４を収容することで、シート本体１４の底面の位置を低く抑えて、シート本体１４の重心を低くすることでき、安全性の向上を図ることができる。 In this embodiment, the rotational member 44 is accommodated in a circular recess 42 formed inside the support surface 26 of the pedestal 12, so that the position of the bottom surface of the seat body 14 is kept low, and the center of gravity of the seat body 14 is increased. It can be lowered, and safety can be improved.

本実施形態では、開口２８，２９，３０，３１の長手方向の縁部に沿って突出させた突条部３２，３３，３４，３５の先端部分をガイドレール４０の内部に収容した状態で、一対のガイドレール４０を連結突部５５，５６，５７，５８の先端に取り付けている。
このようにすることで、本実施形態では突条部３２，３３，３４，３５の基端側は開口２８，２９，３０，３１に挿入された連結突部５５，５６，５７，５８によって支持され、突条部３２，３３，３４，３５の先端側はガイドレール４０によって支持される。突条部３２，３３，３４，３５は高さ方向に亘って支持されるため、台座１２上に載置されているシート本体１４が左右方向にがたついたり、斜めに傾いたりするのを有効に防止することができる。
またシート本体１４の底面を含む座面部１８は、回転部材４４とガイドレール４０とで挟まれ、シート本体１４の回転部材４４に対する抜けが有効に防止できる。 In the present embodiment, in the state where the tip portions of the ridges 32, 33, 34, 35 projected along the longitudinal edges of the openings 28, 29, 30, 31 are accommodated in the guide rail 40, A pair of guide rails 40 are attached to the tips of the connecting projections 55, 56, 57, 58.
By doing in this way, in this embodiment, the base end side of the protrusions 32, 33, 34, 35 is supported by the connecting protrusions 55, 56, 57, 58 inserted into the openings 28, 29, 30, 31. The leading ends of the protrusions 32, 33, 34, and 35 are supported by the guide rail 40. Since the protrusions 32, 33, 34, and 35 are supported in the height direction, the sheet main body 14 placed on the pedestal 12 rattles in the left-right direction or tilts obliquely. It can be effectively prevented.
Further, the seat surface portion 18 including the bottom surface of the seat main body 14 is sandwiched between the rotating member 44 and the guide rail 40, and it is possible to effectively prevent the seat main body 14 from being detached from the rotating member 44.

本実施形態ではまた、回転位置固定手段の操作部材８８とスライド位置固定手段の操作部材７８とをシート本体１４の底面にて上下方向に重ねて配置することで操作部材７８，８８の設置に要するスペースを少なくすることができる。また回転位置固定手段の操作面９６とスライド位置固定手段の操作面８６とを、シート本体１４の底面にて同じ位置に異なる高さで設けることができるため、操作する大人は手の位置を大きく変えることなく回転操作とリクライニング操作を行うことが可能となり、取扱い性を向上させることができる。 In the present embodiment, the operation member 88 of the rotational position fixing means and the operation member 78 of the slide position fixing means are arranged in the vertical direction on the bottom surface of the seat main body 14 so that the operation members 78 and 88 are installed. Space can be reduced. In addition, since the operation surface 96 of the rotation position fixing means and the operation surface 86 of the slide position fixing means can be provided at the same position on the bottom surface of the seat body 14 at different heights, an adult who operates has a larger hand position. It becomes possible to perform the rotation operation and the reclining operation without changing, and the handling property can be improved.

更に本実施形態では、回転位置固定手段の操作部材８８及びスライド位置固定手段の操作部材７８の間に共通のバネ８７を配置し、バネ８７を共用化することで、チャイルドシートの部品点数を抑え、軽量化とともに製造コスト低減を図ることができる。 Furthermore, in the present embodiment, a common spring 87 is disposed between the operation member 88 of the rotational position fixing means and the operation member 78 of the slide position fixing means, and the number of parts of the child seat is reduced by sharing the spring 87. The weight can be reduced and the manufacturing cost can be reduced.

以上本発明の実施形態を詳述したがこれはあくまで一例示である。上記実施形態では回転部材に連結突部を、シート本体に開口を設けたが、場合によっては回転部材に長孔形状の開口を、シート本体に連結突部を設けることも可能である等、その趣旨を逸脱しない範囲において種々変更を加えた態様で実施可能である。 Although the embodiment of the present invention has been described in detail above, this is merely an example. In the above embodiment, the rotation protrusion is provided in the rotating member, and the opening is provided in the seat body. However, in some cases, the rotation member may be provided with a long hole-shaped opening, and the connection protrusion may be provided in the seat body. The present invention can be implemented in a mode in which various changes are made without departing from the spirit of the invention.

１２台座
１４シート本体
２６支持面
２８，２９，３０，３１開口
３２，３３，３４，３５突条部
４０，４１ガイドレール（凹状部材）
４２凹所
４４回転部材
５５，５６，５７，５８，９９連結突部
６６折曲げ部
７８，８８操作部材
８０，９０係合爪
８７バネ（ばね部材）
Ｓチャイルドシート 12 Pedestal 14 Seat body 26 Support surface 28, 29, 30, 31 Opening 32, 33, 34, 35 Projection 40, 41 Guide rail (concave member)
42 Recess 44 Rotating member 55, 56, 57, 58, 99 Connecting protrusion 66 Bending portion 78, 88 Operating member 80, 90 Engaging claw 87 Spring (spring member)
S Child seat

Claims

A child seat comprising a pedestal attached to a vehicle seat, and a seat body rotatable and reclining relative to the pedestal,
A support surface formed on the upper surface of the pedestal facing the bottom surface of the seat body and extending in the circumferential direction for supporting the weight of the seat body, and provided on the inner side of the support surface and rotatable with respect to the pedestal A rotating member,
A connecting protrusion formed on either the upper surface of the rotating member or the bottom surface of the sheet body is inserted into an elongated hole formed on either the upper surface of the rotating member or the bottom surface of the sheet body. In this state, the seat body is engaged and connected to the rotating member so as to be slidable ,
Furthermore, it has a ridge protruding along the edge in the longitudinal direction of the opening, and a concave member in which bent portions bent toward the opening are formed at both ends in the width direction. ,
The child seat is characterized in that the concave member is attached to the distal end of the connecting projection in a state where the distal end portion of the protruding portion is accommodated in the concave member .

A child seat comprising a pedestal attached to a vehicle seat, and a seat body rotatable and reclining relative to the pedestal,
A support surface formed on the upper surface of the pedestal facing the bottom surface of the seat body and extending in the circumferential direction for supporting the weight of the seat body, and provided on the inner side of the support surface and rotatable with respect to the pedestal A rotating member,
A connecting protrusion formed on either the upper surface of the rotating member or the bottom surface of the sheet body is inserted into an elongated hole formed on either the upper surface of the rotating member or the bottom surface of the sheet body. In this state, the seat body is engaged and connected to the rotating member so as to be slidable,
A first fixing means for fixing the position of the seat body in the rotational direction relative to the pedestal; and a second fixing means for fixing the position of the seat body in the sliding direction relative to the pedestal,
Each of the first fixing means and the second fixing means has an operation member that makes an engagement claw approach or separate from the pedestal or the rotating member. The child seat according to claim 1, wherein the operation member of the fixing means is disposed so as to overlap vertically on the bottom surface of the seat body.

In claim 2 , a common spring member is disposed between the operation member of the first fixing means and the operation member of the second fixing means,
Either one of the operating member of the first fixing means or the operating member of the second fixing means causes the engaging claw to engage the pedestal or the rotating member by a downward biasing force of the spring member,
Either the operating member of the first fixing means or the operating member of the second fixing means is configured to engage the engaging claw with the pedestal or the rotating member by the upward biasing force of the spring member. A child seat characterized by what has been done.