JP2005176958A - Vehicle seat - Google Patents

Vehicle seat Download PDF

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JP2005176958A
JP2005176958A JP2003418957A JP2003418957A JP2005176958A JP 2005176958 A JP2005176958 A JP 2005176958A JP 2003418957 A JP2003418957 A JP 2003418957A JP 2003418957 A JP2003418957 A JP 2003418957A JP 2005176958 A JP2005176958 A JP 2005176958A
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head
headrest
thoracic vertebra
thoracic
vertebra
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Hirooki Negishi
寛興 根岸
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TS Tech Co Ltd
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TS Tech Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat for preventing whiplash injury by considering the support of the thoracic spine for reliably supporting the head. <P>SOLUTION: The vehicle seat is provided with a head rest 3 at the top of a seatback 2. The headrest 3 is provided at least with: a head support part 11 positioned in the rear of the head T of a seated person; and a thoracic spine supporting part 12 positioned under the head support part 11 and in the rear of the thoracic spine K of the seated person. The thoracic spine supporting part 12 is positioned on the rear side of the upper thoracic spine K among a plurality of thoracic spines which are below the 8th vertebra next to the cervical vertebra. The head support part 11 and the thoracic spine supporting part 12 are positioned nearly at the same front/rear position by a view from a side face, and a recess part 13 recessed backward is formed at a vertically intermediate position between the head support part 11 and the thoracic spine supporting part 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、車両用シートに係るものであり、特に、むち打ち症を防止するヘッドレストを提供するものである。   The present invention relates to a vehicle seat, and particularly provides a headrest for preventing whiplash.

従来、着座者の腰から背中（両肩）を支持する背凭シートの上部に頭部を支持するヘッドレストを設け、該ヘッドレストには着座者の頭部後方に位置する頭部支持部と、該頭部支持部の下方であって着座者の頸椎（首部）の後方に位置する頸椎支持部とを設けた構成は公知である（特許文献１参照）。
即ち、頭部後方まで背凭シートの高さを高くした車両用シートは、所謂バケットシートと呼ばれ、一部の車両で使用されているが、バケットシートではシート全体が大型化し、重量およびコストが高くなる等の理由により独立したヘッドレストを背凭シートに設けた車両用シートが主流であり、この場合のヘッドレストは頭部および頸部の後方に位置していた。
また、従来、背凭シートの上部にヘッドレストを設け、該ヘッドレストの下方であって着座者の頸椎の後方に頸椎を支持する頸椎保護具を設けた構成は公知である（特許文献２参照）。
特公平５−５０９２７号公報 特開２００１−３１０６９５号公報 Conventionally, a headrest for supporting the head is provided on the upper part of the dorsal seat for supporting the back (both shoulders) from the waist of the seated person, and the headrest has a head support part positioned behind the head of the seated person, A configuration in which a cervical vertebra support portion located below the head support portion and behind the cervical vertebra (neck portion) of a seated person is provided is known (see Patent Document 1).
In other words, a vehicle seat in which the height of the dorsal seat is increased to the rear of the head is called a so-called bucket seat, and is used in some vehicles. However, the bucket seat becomes larger in size, weight and cost. The mainstream is a vehicle seat in which an independent headrest is provided on the dorsal seat for reasons such as a rise in height, and the headrest in this case is located behind the head and neck.
Conventionally, a configuration in which a headrest is provided on the upper part of the dorsal fin sheet and a cervical spine protector for supporting the cervical vertebra is provided below the headrest and behind the cervical vertebra of the seated person is known (see Patent Document 2).
Japanese Patent Publication No. 5-50927 JP 2001-310695 A

前記公知例（特公平５−５０９２７号公報）は、頸椎部分が頭部支持部より前側に位置する点が課題である。
むち打ち症は、ヘッドレストの無いシートにおいて、衝撃を受けて瞬間的に頭部が後方移動することと、その後の反力により頭部が前方移動することが原因であり、詳細に検討すると、人体の胸部はシートに支持されるが、シートに支持されていない頭部の瞬間的な前後移動がむち打ち症の原因となる。
この頭部の前後移動は、重い頭部が頸椎ごと前後に振れて行われるが、頸椎を支持しようとしても、頭部の後面と頸部後面との間に段差（前後の位置ずれ）があり、この段差は個人差が大きく、頸部を支持できても、頭部の後面とヘッドレストとの間に隙間が生じると、結局はヘッドレストの存在しないシートと同様にむち打ち症が発症する頭部の前後移動が生じる（図８）。
即ち、頸部の後側に前側に突き出る膨出部分を設けると、この膨出部分が支点となり、却って、反動が大きくなって頭部の後方移動量が大きくなる。
また、前記公知例（特開２００１−３１０６９５号公報）も、頸椎を支持する保護具を背凭シート上部とヘッドレストの間に装着しているが、頭部支持部と保護具の前後位置は「ずれ」ており、前記公知例と同様な課題を有する。
本願は、頸椎の損傷が主に重い頭部の前後移動である点に注目し、頭部を確実に支持するために、胸椎を支持することを工夫したものである。 The known example (Japanese Patent Publication No. 5-50927) has a problem in that the cervical vertebra portion is located in front of the head support portion.
Whiplash is caused by the fact that in a seat without a headrest, the head is instantaneously moved backward upon impact and the head is moved forward by the reaction force thereafter. Although the chest is supported by the seat, momentary back and forth movement of the head not supported by the seat causes whiplash.
The head is moved back and forth by swinging the heavy head back and forth along with the cervical vertebrae. Even when trying to support the cervical vertebrae, there is a step between the back of the head and the back of the neck. This step is highly individual, and even if it can support the neck, if there is a gap between the back of the head and the headrest, it will eventually cause whiplash in the same way as a seat without a headrest. Back and forth movement occurs (FIG. 8).
That is, when a bulging portion protruding forward is provided on the rear side of the neck, this bulging portion serves as a fulcrum, and on the contrary, the reaction increases and the backward movement amount of the head increases.
Also, in the known example (Japanese Patent Application Laid-Open No. 2001-310695), a protector that supports the cervical spine is mounted between the upper part of the dorsal seat and the headrest. It has a problem similar to that of the known example.
The present application focuses on supporting the thoracic vertebra in order to reliably support the head, paying attention to the fact that the damage to the cervical spine is mainly a heavy head back and forth movement.

本発明は、背凭シート２の上部にヘッドレスト３を設け、該ヘッドレスト３には、少なくとも、着座者の頭部Ｔの後方に位置する頭部支持部１１と、該頭部支持部１１の下方であって着座者の胸椎Ｋの後方に位置する胸椎支持部１２とを設けた車両用シートとしたものである。
本発明は、胸椎支持部１２は、頸椎に次ぐ第八番目の脊椎骨より下方に複数ある胸椎のうちの上部の胸椎Ｋの後側に位置させるようにした車両用シートとしたものである。
本発明は、背凭シート２の上部にヘッドレスト３を設け、該ヘッドレスト３には、少なくとも、着座者の頭部Ｔ後方に位置する頭部支持部１１と、該頭部支持部１１の下方であって着座者の複数の胸椎Ｋの内の上部胸椎から複数の頸椎Ｍの内の下部頸椎にかけての後方に位置する胸椎支持部１２とを設けた車両用シートとしたものである。
本発明は、頭部支持部１１と胸椎支持部１２は側面視において略同じ前後位置に位置するようにすると共に、頭部支持部１１と胸椎支持部１２の上下中間位置に後側にへこむ凹部１３を設けた車両用シートとしたものである。
本発明は、頭部支持部１１と胸椎支持部１２は側面視において略同じ傾斜角度で設けた車両用シートとしたものである。
本発明は、前記ヘッドレスト３のフレーム４は、着座者の頭部Ｔの後方に位置する頭部支持部１１の頭部支持横杆１８を有する頭部支持フレーム１５と、胸椎Ｋの後方に位置する胸椎支持部１２の胸椎支持横杆１９を有する胸椎支持フレーム１６とを有して構成し、少なくとも、頭部支持横杆１８および胸椎支持横杆１９の夫々はクッション材５により包囲して構成した車両用シートとしたものである。
本発明は、前記ヘッドレスト３は前記背凭シート２に対して高さ調節自在に取付けた車両用シートとしたものである。 In the present invention, a headrest 3 is provided on the upper part of the dorsal seat 2, and the headrest 3 includes at least a head support portion 11 located behind the head T of the seated person and a lower portion of the head support portion 11. Thus, the vehicle seat is provided with the thoracic vertebra support portion 12 located behind the thoracic vertebra K of the seated person.
The present invention is a vehicle seat in which the thoracic vertebra support portion 12 is positioned on the rear side of the upper thoracic vertebra K among the plurality of thoracic vertebrae below the eighth vertebra after the cervical vertebra.
In the present invention, a headrest 3 is provided on the upper part of the dorsal seat 2, and the headrest 3 includes at least a head support portion 11 located behind the head T of the seated person and a lower portion of the head support portion 11. Thus, the vehicle seat is provided with a thoracic vertebra support portion 12 positioned rearward from the upper thoracic vertebra of the thoracic vertebrae K of the seated person to the lower cervical vertebra of the cervical vertebra M.
According to the present invention, the head support portion 11 and the thoracic vertebra support portion 12 are positioned at substantially the same front and back positions in a side view, and a concave portion that is recessed rearward at an intermediate position between the head support portion 11 and the thoracic vertebra support portion 12. 13 is a vehicle seat provided with 13.
In the present invention, the head support portion 11 and the thoracic vertebra support portion 12 are vehicle seats provided with substantially the same inclination angle in a side view.
In the present invention, the frame 4 of the headrest 3 is positioned behind the thoracic vertebra K, with a head support frame 15 having a head support recumbency 18 of the head support portion 11 positioned behind the head T of the seated person. The thoracic vertebra support part 16 of the thoracic vertebra support part 12 and the thoracic vertebra support frame 16 having the thoracic vertebra support recumbence 19 are configured. This is a vehicle seat.
In the present invention, the headrest 3 is a vehicle seat attached to the dorsal seat 2 so that its height can be adjusted.

請求項１の発明では、頭部Ｔと胸椎Ｋの上下２点を支持でき、むち打ち症を防止する。
請求項２および請求項３の発明では、頭部Ｔおよび胸椎Ｋ付近の上下２点を同時に支持でき、むち打ち症を防止する。
請求項４の発明では、凹部１３の存在により頭部Ｋの後方移動を支持できる。
請求項５の発明では、頭部Ｔおよび胸椎Ｋの上下２点を同時に支持でき、簡素な構成でヘッドレスト３を実現でき、コストを低くできる。
請求項６の発明では、頭部Ｔおよび胸椎Ｋの支持を確実にできる。
請求項７の発明では、着座者の体格に合わせることができ、確実に支持する。 In the invention of claim 1, the upper and lower two points of the head T and the thoracic vertebra K can be supported, and whiplash is prevented.
In the second and third aspects of the invention, the upper and lower two points in the vicinity of the head T and the thoracic vertebra K can be simultaneously supported to prevent whiplash.
In the invention of claim 4, the backward movement of the head K can be supported by the presence of the recess 13.
In the invention of claim 5, the upper and lower two points of the head T and the thoracic vertebra K can be simultaneously supported, the headrest 3 can be realized with a simple configuration, and the cost can be reduced.
In the invention of claim 6, the support of the head T and the thoracic vertebra K can be ensured.
In invention of Claim 7, it can match | combine with a physique of a seated person and it supports reliably.

本発明の実施例を図面により説明すると、１は車両用シートであり、車体に取付けた座席シート（図示省略）の後側に背凭シート２を設けている。該背凭シート２の上部にはヘッドレスト３を設ける。
この車両用シート１は、背凭シート２の高さを、標準体型に基づいて着座者の背中（両肩）と同じかやや高く形成するが、頭部Ｔに届かない高さとし、所謂ヘッドレスト一体型のバケットシートは含まない標準の構成である。
ヘッドレスト３は、フレーム４にクッション材５を設けて構成する。実施例のヘッドレスト３はクッション材５の周囲を表皮部材６で被覆しているが、表皮部材６の存在は要件ではない。
８はヘッドレスト３を背凭シート２の支持部９に装着するピラーであり、実施例では左右一対の脚部１０を所定間隔を置いて設けているが、平板形状に形成してもよい。
また、背凭シート２の支持部材９には公知の構成の脚部１０に設けた係合部に係合する係合体を設け、ピラー８を上下所定位置にて保持するようにして、ヘッドレスト３の高さ調節を行えるようにすると、ヘッドレスト３の位置を着座者の体格に合わせることができ、好適である。 An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a vehicle seat, and a backrest seat 2 is provided on the rear side of a seat seat (not shown) attached to a vehicle body. A headrest 3 is provided on the upper portion of the dorsal seat 2.
The vehicle seat 1 is formed so that the height of the dorsal seat 2 is equal to or slightly higher than the seated person's back (both shoulders) based on the standard body shape, but not so high as to reach the head T. It is a standard configuration that does not include a body-shaped bucket seat.
The headrest 3 is configured by providing a cushion material 5 on a frame 4. Although the headrest 3 of the embodiment covers the periphery of the cushion material 5 with the skin member 6, the presence of the skin member 6 is not a requirement.
Reference numeral 8 denotes a pillar for mounting the headrest 3 to the support portion 9 of the dorsal seat 2, and in the embodiment, a pair of left and right leg portions 10 are provided at a predetermined interval, but may be formed in a flat plate shape.
Further, the support member 9 of the dorsal seat 2 is provided with an engagement body that engages with an engagement portion provided on a leg portion 10 of a known configuration, so that the pillar 8 is held at a predetermined position in the vertical direction. If the height of the headrest 3 can be adjusted, the position of the headrest 3 can be adjusted to the physique of the seated person, which is preferable.

しかして、前記ヘッドレスト３は着座者の頭部Ｔ後方に位置する頭部支持部１１を有し、該頭部支持部１１の下方には着座者の胸椎Ｋの後方に位置して胸椎Ｋを支持する胸椎支持部１２を設ける。
即ち、人体の骨格は頭骨が背骨上部に載っており、背骨は上側より頸椎、胸椎、腰椎により構成され、むち打ち症は頸椎部分の損傷と考えられていたが、頸椎Ｍは図７のように、胸椎Ｋを支点に前後に回動（移動）するので、この回動支点となる胸椎Ｋと振り幅の大きい頭部Ｔとを支持すると、首と頭部の支持が確実になる。
また、頸椎部分のみを支持する頸椎Ｍの支持部を設けると、図８のように、頭部Ｔの後側に空間ができることがあり、衝撃を受けたとき、頭部Ｔが支持されないことがある。 Thus, the headrest 3 has a head support part 11 located behind the seated person's head T, and below the head support part 11 is positioned behind the seated person's thoracic vertebra K and the thoracic vertebra K is provided. A supporting thoracic vertebra support 12 is provided.
That is, the skeleton of the human body has the skull on the upper part of the spine, and the spine is composed of the cervical vertebrae, the thoracic vertebrae, and the lumbar vertebra from the upper side. Whiplash is considered to be damage to the cervical vertebrae. Since the thoracic vertebra K is pivoted (moved) back and forth with the thoracic vertebra K as a fulcrum, if the thoracic vertebra K serving as the pivot fulcrum and the head T having a large swing width are supported, the support of the neck and the head is ensured.
Further, when the support portion of the cervical vertebra M that supports only the cervical vertebra portion is provided, a space may be formed on the rear side of the head T as shown in FIG. 8, and the head T may not be supported when subjected to an impact. is there.

そこで、本願のヘッドレスト３は、頭部Ｔおよび胸椎Ｋの夫々の後方に位置する頭部支持部１１と胸椎支持部１２を設けて構成する。
この場合、頭部支持部１１と胸椎支持部１２は側面視において略同じ前後位置に位置するように構成する。
また、頭部支持部１１と胸椎支持部１２の間のヘッドレスト３の前面は、頭部支持部１１と胸椎支持部１２の夫々よりも後側にへこむ凹部１３に形成し、頭部支持部１１と胸椎支持部１２の２点により支持するように構成すると、一層、着座者の上半身を確実に支持して、好適である。
前記胸椎支持部１２は、頸椎Ｍに次ぐ第八番目の脊椎骨を第一胸椎とし、この第一胸椎から第五胸椎の略後側を支持するように構成すると、支持が確実となる。このとき、着座者の体格差から胸椎支持部１２が複数の頸椎Ｍの内の下部頸椎Ｍの後方に位置してもよいが、必ず、胸椎Ｋを含めて支持するように構成する（図６）。 Therefore, the headrest 3 of the present application is configured by providing a head support portion 11 and a thoracic vertebra support portion 12 that are located behind the head T and the thoracic vertebra K, respectively.
In this case, the head support portion 11 and the thoracic vertebra support portion 12 are configured to be positioned at substantially the same front and back positions in a side view.
Further, the front surface of the headrest 3 between the head support portion 11 and the thoracic vertebra support portion 12 is formed as a recess 13 that is recessed behind the head support portion 11 and the thoracic vertebra support portion 12, respectively. If supported by the two points of the thoracic vertebra support portion 12, it is preferable to support the upper body of the seated person more reliably.
If the thoracic vertebra support portion 12 is configured so that the eighth vertebra after the cervical vertebra M is the first thoracic vertebra and supports substantially the back side of the fifth thoracic vertebra, the support is ensured. At this time, the thoracic vertebra support part 12 may be positioned behind the lower cervical vertebra M among the plurality of cervical vertebrae M due to the difference in the physique of the seated person. ).

実施例の頭部支持部１１はフレーム４の頭部支持フレーム１５にクッション材５を設け、胸椎支持部１２は胸椎支持フレーム１６にクッション材５を設けて夫々構成している。
図３ではピラー８の上部に連設した縦軸部１７の上部に左右方向の頭部支持横杆１８を設けて頭部支持フレーム１５を構成し、頭部支持横杆１８の下方に胸椎支持横杆１９を設けて胸椎支持フレーム１６を構成している。
また、図４の実施例では縦軸部１７の上部に頭部支持横杆１８を設けて頭部支持フレーム１５を構成し、縦軸部１７の下部に前方に突き出るように胸椎支持横杆１９を設けて胸椎支持フレーム１６を構成している。 The head support portion 11 of the embodiment is configured by providing the cushion material 5 on the head support frame 15 of the frame 4 and the thoracic vertebra support portion 12 by providing the cushion material 5 on the thoracic vertebra support frame 16.
In FIG. 3, a head support frame 18 is provided in the left-right direction on the upper part of the vertical axis portion 17 that is connected to the upper part of the pillar 8 to form the head support frame 15, and the thoracic vertebra support is provided below the head support support 18. A horizontal rib 19 is provided to constitute the thoracic spine support frame 16.
Further, in the embodiment of FIG. 4, the head support frame 18 is configured by providing a head support recumbent 18 on the upper part of the vertical axis part 17, and the thoracic support recumbent reed 19 is projected forward from the lower part of the vertical axis part 17. The thoracic vertebra support frame 16 is formed.

また、図５の実施例では、ピラー８の上部に続いて縦軸部１７を連設し、縦軸部１７の上部を頭部支持横杆１８により連結して頭部支持フレーム１５を構成し、ピラー８または縦軸部１７の下部に一対の下側縦軸部２０の基部を固定し、下側縦軸部２０の先端を頭部支持横杆１８により連結して胸椎支持フレーム１６を構成し、下側縦軸部２０の基部側の一部は露出させて、頭部支持部１１のクッション材５と胸椎支持部１２のクッション材５を分離させて別体形状に形成している。
この場合も、頭部支持部１１と胸椎支持部１２はヘッドレスト３の前面に一体状に略同じ傾斜角度により形成すると、頭部Ｔと胸椎Ｋの支持が良好となって、好適である。 Further, in the embodiment of FIG. 5, a vertical axis portion 17 is provided continuously from the upper portion of the pillar 8, and the upper portion of the vertical axis portion 17 is connected by a head support horizontal bar 18 to constitute a head support frame 15. The base part of the pair of lower vertical axis parts 20 is fixed to the lower part of the pillar 8 or the vertical axis part 17, and the distal ends of the lower vertical axis parts 20 are connected by the head support lateral ribs 18 to constitute the thoracic vertebra support frame 16. Then, a part of the base side of the lower vertical axis portion 20 is exposed, and the cushion material 5 of the head support portion 11 and the cushion material 5 of the thoracic vertebra support portion 12 are separated to form a separate shape.
Also in this case, it is preferable that the head support portion 11 and the thoracic vertebra support portion 12 are integrally formed on the front surface of the headrest 3 at substantially the same inclination angle because the support of the head T and the thoracic vertebra K is good.

次に実施例の作用を述べる。
ヘッドレスト３は、フレーム４の外周にクッション部材５を設けて構成し、ヘッドレスト３のピラー８を背凭シート２の支持部材に装着する。
ヘッドレスト３は、着座者の頭部Ｔ後方に位置する頭部支持部１１と、該頭部支持部１１の下方の着座者の胸椎Ｋの後方に位置して胸椎Ｋを支持する胸椎支持部１２を有して構成しているから、衝撃を受けた着座者は、頭部Ｔは頭部支持部１１により、胸椎Ｋは胸椎支持部１２により支持される。 Next, the operation of the embodiment will be described.
The headrest 3 is configured by providing a cushion member 5 on the outer periphery of the frame 4, and the pillar 8 of the headrest 3 is attached to the support member of the backrest seat 2.
The headrest 3 includes a head support portion 11 positioned behind the seated person's head T, and a thoracic spine support portion 12 positioned behind the thoracic vertebra K of the seated person below the head support portion 11 and supporting the thoracic vertebra K. Therefore, the seated person who receives the impact is supported by the head support portion 11 and the thoracic vertebra K by the thoracic vertebra support portion 12.

ヘッドレスト３の頭部支持部１１と胸椎支持部１２は頭部Ｔと胸椎Ｋの２点を支持するので、着座者の頭部Ｔおよび胸椎Ｋの慣性による後方移動を阻止して、むち打ち症の発症を防止する。
むち打ち症は、ヘッドレスト３のないシートにおいて、衝撃を受けて瞬間的に頭部Ｔが後方移動し、その後に反力により頭部Ｔが前方移動することが原因であるが、詳細に検討すると、人体の胸部はシートに支持されるが支持されていない頭部Ｔの前後移動が原因となる。そして、頭部Ｔの前後移動は、重い頭部Ｔが頸椎ごと前後に振れることであるが、頸椎を支持しようとしても、頭部Ｔの後面と頸部後面との間に段差（前後の位置ずれ）があり、この段差は個人差が大きく、頸部を支持できても、頭部Ｔの後面とヘッドレスト３との間に隙間が生じると、結局はヘッドレスト３の存在しないシートと同様にむち打ち症が発症する頭部Ｔの前後移動が生じる。 Since the head support 11 and the thoracic vertebra support 12 of the headrest 3 support the two points of the head T and the thoracic vertebra K, the backward movement due to the inertia of the seated person's head T and thoracic vertebra K is prevented, and whiplash is caused. Prevent onset.
Whiplash is caused by the fact that in the seat without the headrest 3, the head T momentarily moves backward upon impact, and then the head T moves forward due to the reaction force. The chest of the human body is supported by the seat but is caused by the back and forth movement of the unsupported head T. The back and forth movement of the head T is that the heavy head T swings back and forth along with the cervical vertebrae. Even if the cervical vertebra is to be supported, there is a step (front and back position) between the rear surface of the head T and the rear surface of the neck. Even if the step can be supported by the neck, if there is a gap between the rear surface of the head T and the headrest 3, it will eventually whip as with a seat without the headrest 3. Movement of the head T where the disease develops occurs.

本願は、ヘッドレスト３に着座者の頭部Ｔ後方に位置する頭部支持部１１と、該頭部支持部１１の下方の着座者の胸椎Ｋの後方に位置して胸椎Ｋを支持する胸椎支持部１２を設けているから、頭部Ｔと胸椎Ｋの２点を支持し、その結果、肩より上方（頭部および頸部の頭部Ｔ付近）を支持し、慣性による後方移動を阻止する。
この場合、頭部Ｔと胸椎Ｋは、頸部程前後の位置のずれに対する個人差が少ないので、頭部支持部１１および胸椎支持部１２を有するヘッドレスト３は、着座者の頭部Ｔ付近を確実に支持する。
また、頭部支持部１１と胸椎支持部１２の間のヘッドレスト３の前面は、頭部支持部１１と胸椎支持部１２の夫々よりも後側にへこむ凹部１３に形成しているから、凹部１３があることで頸椎部分が前側に残って頭部Ｔのみが後方移動させるのを防止して、頭部Ｔと胸椎Ｋとが一体で後方移動するように荷重を支持する。 The present application is directed to a head support 11 that is positioned behind a seated person's head T on the headrest 3 and a thoracic support that supports the thoracic vertebra K positioned behind the thoracic vertebra K of the seated person below the head support 11. Since the portion 12 is provided, two points of the head T and the thoracic vertebra K are supported, and as a result, the upper part of the head (near the head T of the head and neck) is supported and the backward movement due to inertia is prevented. .
In this case, since the head T and the thoracic vertebra K have a small individual difference with respect to the positional shift around the neck, the headrest 3 having the head support 11 and the thoracic vertebra support 12 is located near the head T of the seated person. Be sure to support it.
Further, the front surface of the headrest 3 between the head support portion 11 and the thoracic vertebra support portion 12 is formed as a recess 13 that is recessed rearward of the head support portion 11 and the thoracic vertebra support portion 12. Therefore, the cervical vertebra part remains on the front side and only the head T is prevented from moving backward, and the load is supported so that the head T and the thoracic vertebra K move backward together.

即ち、凹部１３の存在により頭部Ｔと胸椎Ｋとを面で支持することになる。
したがって、凹部１３の存在により頭部Ｔと頭部支持部１１との間に隙間を発生させず、一層、着座者の上半身を確実に支持して、好適である。
また、頭部Ｔの高さ位置には個人差があるが、頭部Ｔと胸椎Ｋとの間の間隔には個人差が少ないので、ヘッドレスト３の高さを調節することで、胸椎支持部１２は十分に着座者の胸椎Ｋを支持する高さ位置に配置でき、この点でも、着座者の頭部Ｔ付近を確実に支持する。 That is, the head T and the thoracic vertebra K are supported by the surface due to the presence of the recess 13.
Therefore, the presence of the concave portion 13 is preferable because a gap is not generated between the head T and the head support portion 11 and the upper body of the seated person is reliably supported.
Further, although there are individual differences in the height position of the head T, there are few individual differences in the distance between the head T and the thoracic vertebra K. Therefore, by adjusting the height of the headrest 3, 12 can be disposed at a height that sufficiently supports the occupant's thoracic vertebra K, and in this respect as well, the vicinity of the head T of the occupant is reliably supported.

しかして、ヘッドレスト３は、フレーム４を、頭部Ｔの後方に位置する頭部支持横杆１８を有する頭部支持フレーム１５と、胸椎Ｋの後方に位置する胸椎支持横杆１９を有する胸椎支持フレーム１６との夫々にクッション材５を設けて構成しているから、頭部支持部１１と胸椎支持部１２は夫々頭部Ｔと胸椎Ｋを強固に支持する。   Thus, the headrest 3 has a thoracic vertebra support having a frame 4, a head support frame 15 having a head support recumbency 18 located behind the head T, and a thoracic support recumbency 19 located behind the thoracic vertebra K. Since the cushion material 5 is provided on each of the frames 16, the head support portion 11 and the thoracic vertebra support portion 12 firmly support the head T and the thoracic vertebra K, respectively.

この場合、頭部支持横杆１８と胸椎支持横杆１９は略同じ前後位置に位置するように構成しているから、頭部支持部１１と胸椎支持部１２は着座者の頭部Ｔと胸椎Ｋを同時に支持するので、頭部Ｔ付近の支持を確実にする。
換言すると、頭部支持部１１と胸椎支持部１２は、ヘッドレスト３の前面に一体状に形成しているから、頭部支持部１１と胸椎支持部１２はヘッドレスト３の前面に略一体状の傾斜角度に形成でき、頭部Ｔ付近の支持を確実にするとともに、容易に構成することができる。 In this case, since the head support recumbency 18 and the thoracic vertebra support recumbency 19 are configured to be positioned at substantially the same front-rear position, the head support 11 and the thoracic vertebra support 12 are the occupant's head T and thoracic vertebra. Since K is supported at the same time, support near the head T is ensured.
In other words, since the head support portion 11 and the thoracic vertebra support portion 12 are formed integrally with the front surface of the headrest 3, the head support portion 11 and the thoracic vertebra support portion 12 are inclined substantially integrally with the front surface of the headrest 3. It can be formed at an angle, and can be easily configured while ensuring support in the vicinity of the head T.

また、ヘッドレスト３の前面に頭部支持部１１と胸椎支持部１２を設けているが、略同一面状に形成しているので、外観上もシンプルで見栄えを良好にしている。   Moreover, although the head support part 11 and the thoracic vertebra support part 12 are provided in the front surface of the headrest 3, since they are formed in substantially the same plane, the appearance is simple and the appearance is good.

背凭シートおよびヘッドレストの斜視図。The perspective view of a dorsal fin seat and a headrest. 同概略側面図。The schematic side view. ヘッドレストの縦断側面図およびヘッドレストフレームの斜視図。The longitudinal side view of a headrest, and the perspective view of a headrest frame. 他の実施例のヘッドレストの縦断側面図およびヘッドレストフレームの斜視図。The vertical side view of the headrest of another Example, and the perspective view of a headrest frame. 他の実施例のヘッドレストの縦断側面図およびヘッドレストフレームの斜視図。The vertical side view of the headrest of another Example, and the perspective view of a headrest frame. 他の実施例の背凭シートおよびヘッドレストの概略縦断側面図。The schematic longitudinal cross-sectional side view of the dorsal fin seat and headrest of another Example. むち打ち症の頭部移動状態説明図。Explanatory drawing of the head movement state of whiplash. 公知例のむち打ち症の頭部移動状態説明図。Explanatory drawing of the head movement state of whiplash in a known example. 本願の作用状態説明図。Action state explanatory drawing of this application.

符号の説明Explanation of symbols

１…車両用シート、２…背凭シート、３…ヘッドレスト、５…クッション材、６…表皮部材、８…ピラー、９…支持部材、１１…頭部支持部、１２…胸椎支持部、１３…凹部、１５…頭部支持フレーム、１６…胸椎支持フレーム、１７…縦軸部、１８…頭部支持横杆、１９…胸椎支持横杆、２０…下側縦軸部。   DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Backrest seat, 3 ... Headrest, 5 ... Cushion material, 6 ... Skin member, 8 ... Pillar, 9 ... Support member, 11 ... Head support part, 12 ... Thoracic vertebra support part, 13 ... Recessed part, 15 ... head support frame, 16 ... thoracic vertebra support frame, 17 ... vertical part, 18 ... head support recumbency, 19 ... thoracic vertebra support recumbency, 20 ... lower ordinate part.

Claims (7)

背凭シート２の上部にヘッドレスト３を設け、該ヘッドレスト３には、少なくとも、着座者の頭部Ｔの後方に位置する頭部支持部１１と、該頭部支持部１１の下方であって着座者の胸椎Ｋの後方に位置する胸椎支持部１２とを設けた車両用シート。 A headrest 3 is provided on the upper part of the dorsal seat 2, and the headrest 3 is at least a head support part 11 located behind the head T of the seated person and a seat below the head support part 11. A vehicle seat provided with a thoracic vertebra support 12 located behind the thoracic vertebra K of a person. 請求項１において、胸椎支持部１２は、頸椎に次ぐ第八番目の脊椎骨より下方に複数ある胸椎のうちの上部の胸椎Ｋの後側に位置させるようにした車両用シート。 2. The vehicle seat according to claim 1, wherein the thoracic vertebra support portion 12 is positioned on the rear side of the upper thoracic vertebra K among the plurality of thoracic vertebrae below the eighth vertebra after the cervical vertebra. 背凭シート２の上部にヘッドレスト３を設け、該ヘッドレスト３には、少なくとも、着座者の頭部Ｔ後方に位置する頭部支持部１１と、該頭部支持部１１の下方であって着座者の複数の胸椎Ｋの内の上部胸椎から複数の頸椎Ｍの内の下部頸椎にかけての後方に位置する胸椎支持部１２とを設けた車両用シート。 A headrest 3 is provided on the upper part of the dorsal seat 2, and the headrest 3 includes at least a head support part 11 located behind the head T of the seated person and a seated person below the head support part 11. A vehicle seat provided with a thoracic vertebra support portion 12 located rearward from the upper thoracic vertebra of the plurality of thoracic vertebrae K to the lower cervical vertebra of the plurality of cervical vertebrae M. 請求項１または請求項２または請求項３において、頭部支持部１１と胸椎支持部１２は側面視において略同じ前後位置に位置するようにすると共に、頭部支持部１１と胸椎支持部１２の上下中間位置に後側にへこむ凹部１３を設けた車両用シート。 3. The head support part 11 and the thoracic vertebra support part 12 according to claim 1 or claim 2 or claim 3, wherein the head support part 11 and the thoracic vertebra support part 12 A vehicle seat provided with a recess 13 that is recessed rearward at an upper and lower intermediate position. 請求項１または請求項２または請求項３において、頭部支持部１１と胸椎支持部１２は側面視において略同じ傾斜角度で設けた車両用シート。 4. The vehicle seat according to claim 1, wherein the head support portion 11 and the thoracic vertebra support portion 12 are provided at substantially the same inclination angle in a side view. 請求項１または請求項２または請求項３または請求項４または請求項５において、前記ヘッドレスト３のフレーム４は、着座者の頭部Ｔの後方に位置する頭部支持部１１の頭部支持横杆１８を有する頭部支持フレーム１５と、胸椎Ｋの後方に位置する胸椎支持部１２の胸椎支持横杆１９を有する胸椎支持フレーム１６とを有して構成し、少なくとも、頭部支持横杆１８および胸椎支持横杆１９の夫々はクッション材５により包囲して構成した車両用シート。 The frame 4 of the headrest 3 according to claim 1, claim 2, claim 3, claim 4, or claim 5, wherein the frame 4 of the headrest 3 is lateral to the head support portion 11 of the head support portion 11 located behind the head T of the seated person. A head support frame 15 having a heel 18 and a thoracic support frame 16 having a thoracic support frame 19 of the thoracic vertebra support part 12 located behind the thoracic vertebra K are configured. Each of the thoracic vertebra support recumbent ridges 19 is a vehicle seat configured by being surrounded by a cushion material 5. 請求項１または請求項２または請求項３または請求項４または請求項５または請求項６において、前記ヘッドレスト３は前記背凭シート２に対して高さ調節自在に取付けた車両用シート。 The vehicle seat according to claim 1, claim 2, claim 3, claim 4, claim 5, or claim 6, wherein the headrest 3 is attached to the dorsal back seat 2 so as to be adjustable in height.
JP2003418957A 2003-12-17 2003-12-17 Vehicle seat Pending JP2005176958A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007244752A (en) * 2006-03-17 2007-09-27 Osada Res Inst Ltd Chair for odontotherapy
WO2011027953A1 (en) * 2009-09-03 2011-03-10 Nam Hae Hyun Headrest
CN114771379A (en) * 2022-05-19 2022-07-22 一汽丰田汽车有限公司 Seat headrest, vehicle and fatigue grade detection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007244752A (en) * 2006-03-17 2007-09-27 Osada Res Inst Ltd Chair for odontotherapy
WO2011027953A1 (en) * 2009-09-03 2011-03-10 Nam Hae Hyun Headrest
CN114771379A (en) * 2022-05-19 2022-07-22 一汽丰田汽车有限公司 Seat headrest, vehicle and fatigue grade detection method

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