JPH08164035A - Back-and-forth adjusting device of headrest - Google Patents
Back-and-forth adjusting device of headrestInfo
- Publication number
- JPH08164035A JPH08164035A JP33336794A JP33336794A JPH08164035A JP H08164035 A JPH08164035 A JP H08164035A JP 33336794 A JP33336794 A JP 33336794A JP 33336794 A JP33336794 A JP 33336794A JP H08164035 A JPH08164035 A JP H08164035A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- headrest
- coil
- shaft portion
- horizontal shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ヘッドレストフレーム
に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest frame.
【０００２】[0002]
【従来技術】従来公知の、実開昭６１−２８４５２号公
報には、水平方向の横軸部およびシート側に取付ける脚
部を有するピラーに、前記横軸部を中心に前後方向に回
動自在にヘッドレストフレームを取付け、前記横軸部に
はコイルバネ７のコイル部を挿着し、前記コイルバネ
は、通常ヘッドレストフレームを前記横軸部に対してロ
ックするように、極めて小径のコイル部を横軸部に挿着
し、ロック解除機構と該解除機構の操作機構とを設けた
構成について記載されている。また、従来公知の、実開
昭５６−１５３２５６号公報には、水平方向の横軸部お
よびシート側に取付ける脚部を有するピラーに、前記横
軸部を中心に前後方向に回動自在にヘッドレストフレー
ムを取付け、前記横軸部とピラーの間に皿バネにより構
成したブレーキ機構を設けた構成について記載されてい
る。2. Description of the Related Art In the publicly known Japanese Utility Model Laid-Open No. 61-28452, a pillar having a horizontal horizontal shaft portion and leg portions attached to the seat side is rotatable in the front-rear direction about the horizontal shaft portion. The headrest frame is attached to the horizontal shaft portion, and the coil portion of the coil spring 7 is inserted and attached to the horizontal shaft portion. The coil spring normally has a coil portion having an extremely small diameter so that the headrest frame is locked to the horizontal shaft portion. A configuration in which a lock release mechanism and an operation mechanism of the release mechanism are provided by being attached to a portion is described. Further, in Japanese Utility Model Laid-Open No. 56-153256, which has been publicly known, a pillar having a horizontal horizontal shaft portion and a leg portion attached to the seat side is provided with a headrest rotatably in the front-rear direction about the horizontal shaft portion. A structure in which a frame is attached and a brake mechanism constituted by a disc spring is provided between the horizontal shaft portion and the pillar is described.
【０００３】[0003]
【発明が解決しようとする課題】前記実開昭６１−２８
４５２号公報に記載された公知例は、コイルバネのコイ
ル部の摩擦抵抗を利用して、横軸部に対してヘッドレス
トフレームをロックさせているから、前後位置調節する
のに、いちいち操作機構によりロックを解除する必要が
あるという課題がある。また、ロック解除機構と該解除
機構の操作機構とを必要とするから、構造が複雑であ
り、製造組立てが容易でなく、重量も嵩むだけでなく、
コストも高いという課題がある。また、前記実開昭５６
−１５３２５６号公報に記載された公知例は、横軸部と
ピラーの間に皿バネにより構成したブレーキ機構を設け
た構成であるから、前記公知例の課題は解決している
が、構造が複雑であり、また、皿バネの押圧力を利用し
た摩擦ブレーキであるから、バネ設定が非常に困難であ
るという課題がある。また、ヘッドレスとの回動方向に
関わらず、常時ブレーキをかけるので、操作性もよくな
いという課題がある。しかし、前記コイルバネの使用状
態について工夫すると、ロック解除機構と該解除機構の
操作機構のいずれも不要とし、構造が簡単、製造組立て
が容易、軽量、低コストのヘッドレストの前後調節装置
とできる。DISCLOSURE OF INVENTION Problems to be Solved by the Invention Saikai 61-28
In the known example described in Japanese Patent No. 452, the headrest frame is locked with respect to the horizontal shaft portion by utilizing the frictional resistance of the coil portion of the coil spring. Therefore, the headrest frame is locked by the operating mechanism to adjust the front-back position. There is a problem that it is necessary to cancel. Further, since the lock release mechanism and the operation mechanism of the release mechanism are required, the structure is complicated, manufacturing and assembling are not easy, and not only the weight is increased, but also
There is a problem that the cost is high. In addition, the actual exploitation 56
The known example described in Japanese Patent Laid-Open No. 153256 has a structure in which a brake mechanism constituted by a disc spring is provided between a horizontal shaft portion and a pillar. Therefore, the problem of the known example is solved, but the structure is complicated. Further, since the friction brake uses the pressing force of the disc spring, there is a problem that it is very difficult to set the spring. Further, since the brake is always applied regardless of the direction of rotation with respect to the headless, there is a problem that operability is not good. However, if the usage state of the coil spring is devised, neither the lock releasing mechanism nor the operating mechanism of the releasing mechanism is required, and the structure can be simple, the manufacturing and assembling are easy, the weight is low, and the headrest front-back adjusting device can be obtained.
【０００４】[0004]
【発明の目的】構造簡単、製造組立の容易化、軽量化、
低コスト化、操作性の向上。Aims of the invention: Simple structure, facilitation of manufacturing and assembling, weight saving,
Lower cost and improved operability.
【０００５】[0005]
【課題を解決するための手段】本発明は、水平方向の横
軸部３およびシート側に取付ける脚部４を有するピラー
２に、前記横軸部３を中心に前後方向に回動自在にヘッ
ドレストフレーム１を取付け、前記横軸部３には、前記
フレーム１の回動はロックしないが横軸部３よりも小径
のコイルバネ７のコイル部８を挿着し、前記コイルバネ
７は、その一端１０を自由端に、その他端９は前記フレ
ーム１に係止し該フレーム１の前方回動のとき前記コイ
ル部８の径を拡大させるように構成したヘッドレストの
前後調節装置としたものである。本発明は、水平方向の
横軸部３およびシート側に取付ける脚部４を有するピラ
ー２に、前記横軸部３を中心に前後方向に回動自在にヘ
ッドレストフレーム１を取付け、前記横軸部３には、前
記フレーム１の回動はロックしないが横軸部３よりも小
径のコイルバネ７のコイル部８を挿着し、前記コイルバ
ネ７は、その一端１０を自由端に、その他端９は前記フ
レーム１に係止し該フレーム１の後方回動のとき前記コ
イル部８の径を縮小させるように構成したヘッドレスト
の前後調節装置としたものである。本発明は、前記コイ
ルバネ７は前記横軸部３の左右側に設けたヘッドレスト
の前後調節装置としたものである。本発明は、前記コイ
ルバネ７は前記横軸部３の左右側に設け、互いの巻き方
向を反対となるように取付けたヘッドレストの前後調節
装置としたものである。本発明は、前記コイルバネ７の
うち、前方回動に抵抗を与えるコイルバネ７の弾力を弱
く形成したヘッドレストの前後調節装置としたものであ
る。本発明は、前記コイルバネ７は、コイル部８の両端
にそれぞれ端部を形成したヘッドレストの前後調節装置
としたものである。SUMMARY OF THE INVENTION According to the present invention, a pillar 2 having a horizontal horizontal shaft portion 3 and a leg portion 4 mounted on the seat side is provided on a headrest rotatably in the front-back direction about the horizontal shaft portion 3. A frame 1 is attached, and a coil portion 8 of a coil spring 7 having a smaller diameter than that of the horizontal shaft portion 3 is inserted and attached to the horizontal shaft portion 3, but the rotation of the frame 1 is not locked. Is a free end, and the other end 9 is a headrest front-rear adjusting device configured to be locked to the frame 1 and to enlarge the diameter of the coil portion 8 when the frame 1 is rotated forward. According to the present invention, a headrest frame 1 is attached to a pillar 2 having a horizontal horizontal shaft portion 3 and leg portions 4 mounted on the seat side so as to be rotatable in the front-rear direction about the horizontal shaft portion 3, A coil portion 8 of a coil spring 7 having a diameter smaller than that of the horizontal shaft portion 3 is inserted into 3 but the rotation of the frame 1 is not locked. One end 10 of the coil spring 7 is a free end and the other end 9 is The headrest front-rear adjusting device is configured to be locked to the frame 1 and reduce the diameter of the coil portion 8 when the frame 1 is rotated rearward. In the present invention, the coil spring 7 is a headrest front-rear adjusting device provided on the left and right sides of the horizontal shaft portion 3. According to the present invention, the coil spring 7 is provided on the left and right sides of the horizontal shaft portion 3 and is a headrest front-back adjusting device that is attached so that the winding directions thereof are opposite to each other. The present invention is a headrest front-rear adjusting device in which the elastic force of the coil spring 7 that gives a resistance to the forward rotation is weakly formed. According to the present invention, the coil spring 7 is a headrest front-rear adjusting device in which end portions are formed at both ends of the coil portion 8.
【０００６】[0006]
【実施例】本発明の実施例を図面により説明すると、１
はヘッドレストのヘッドレストフレームであり、ピラー
２の水平方向の横軸部３に対して前後方向に回動自在に
取付ける。前記ピラー２は、前記横方向の横軸部３と、
該横軸部３に対して交差方向の脚部４とにより構成し、
脚部４をシートに設けた支持部材（図示省略）に高さ位
置調節自在に挿入固定する。実施例では、脚部４は左右
一対形成している。ヘッドレストフレーム１と前記横軸
部３との間には、ブレーキ機構６を設ける。ブレーキ機
構６は、コイルバネ７により構成する。コイルバネ７
は、コイル部８と、端部９、１０により構成するが、前
記端部９と端部１０のうち、コイル部８の巻き方向に対
して、ヘッドレストフレーム１が後方移動したときコイ
ル部８の径を小径にする方の端部を径小方向端部９と
し、他方のコイル部８の径を大径にする方の端部を径大
方向端部１０とし、前記径小方向端部９は前記ヘッドレ
ストフレーム１側に係止するが、前記径大方向端部１０
は自由端とする。なお、径大方向端部１０は、取付の際
に非常に有効であるが、ブレーキ機構６の構成要件では
ない。Embodiments of the present invention will be described with reference to the drawings.
Is a headrest frame of a headrest, which is attached to the horizontal lateral shaft portion 3 of the pillar 2 so as to be rotatable in the front-rear direction. The pillar 2 includes the lateral axis portion 3 in the lateral direction,
And a leg portion 4 in a direction intersecting with the horizontal shaft portion 3,
The leg portion 4 is inserted and fixed to a supporting member (not shown) provided on the seat so that the height position can be adjusted. In the embodiment, a pair of left and right legs 4 is formed. A brake mechanism 6 is provided between the headrest frame 1 and the horizontal shaft portion 3. The brake mechanism 6 is composed of a coil spring 7. Coil spring 7
Is composed of the coil portion 8 and the end portions 9 and 10. Of the end portion 9 and the end portion 10, when the headrest frame 1 moves rearward with respect to the winding direction of the coil portion 8, The end having the smaller diameter is designated as the smaller diameter end 9 and the other end having the larger diameter as the larger diameter is designated as the larger diameter end 10. Engages with the headrest frame 1 side, but the radial direction end portion 10
Is the free end. The large-diameter direction end 10 is very effective at the time of mounting, but is not a constituent requirement of the brake mechanism 6.
【０００７】そして、前記コイル部８は、ピラー２の横
軸部３より稍小径に形成し、ヘッドレストフレーム１が
衝撃荷重によりを後方回動するとき、回動にブレーキを
与えて支持する程度の締付となる直径に形成する。しか
して、前記コイルバネ７は、ヘッドレストフレーム１の
後方移動に対して支持するように形成したものを少なく
とも１個ピラー２に取付ければ良いが、他の実施例とし
て、第２実施例では、横軸部３の左右側に２個設ける。
また、第３実施例では、左右のコイルバネ７の巻き方向
を反対にし、それぞれがヘッドレストフレーム１の回動
に抵抗を与えるようにする。また、第４実施例では、前
記第３実施例において、ヘッドレストフレーム１の後方
回動に対して前方回動を軽くするように構成する。１１
は前記ヘッドレストフレーム１に形成した前記コイルバ
ネ７のバネ端部係止部、ボルト１２は前後のフレーム１
３、１３を止めるボルト１２である。The coil portion 8 is formed to have a diameter smaller than that of the horizontal shaft portion 3 of the pillar 2 so that when the headrest frame 1 is rotated backward due to an impact load, a brake is applied to the rotation to support it. Form it to the diameter that will be tightened. Then, at least one of the coil springs 7 formed to support the backward movement of the headrest frame 1 may be attached to the pillar 2. However, as another embodiment, in the second embodiment, Two pieces are provided on the left and right sides of the shaft portion 3.
Further, in the third embodiment, the winding directions of the left and right coil springs 7 are opposite to each other, and each of them gives resistance to the rotation of the headrest frame 1. Further, in the fourth embodiment, in the third embodiment, the forward rotation is lightened with respect to the backward rotation of the headrest frame 1. 11
Is a spring end locking portion of the coil spring 7 formed on the headrest frame 1, and bolts 12 are front and rear frames 1
A bolt 12 for stopping the screws 3 and 13.
【０００８】[0008]
【作用】次に作用を述べる。本発明は前記の構成である
から、コイルバネ７の端部９と端部１０とを手により摘
むと、コイル部８の直径は太くなり、この状態で、ピラ
ー２の横軸部３に挿入し、横軸部３をヘッドレストフレ
ーム１の一方のフレーム１３にセットし、コイルバネ７
の端部９をフレーム１３のバネ端部係止部１１に係止
し、前後のフレーム１３をボルト１２により固定する
と、組立てが完了する。したがって、頗る容易に組立て
できる。即ち、いずれかの任意の手段によりコイルバネ
７のいずれか一方の端部をヘッドレストフレーム１のい
ずれか任意の箇所に固定すればよい。[Operation] Next, the operation will be described. Since the present invention has the above-described configuration, when the end portions 9 and 10 of the coil spring 7 are picked by hand, the diameter of the coil portion 8 becomes thicker, and in this state, the coil portion 8 is inserted into the lateral shaft portion 3 of the pillar 2. , The horizontal shaft portion 3 is set on one frame 13 of the headrest frame 1, and the coil spring 7
The assembly is completed when the end portions 9 of the frame 13 are locked to the spring end locking portions 11 of the frame 13 and the front and rear frames 13 are fixed by the bolts 12. Therefore, it is very easy to assemble. That is, any one of the ends of the coil spring 7 may be fixed to any arbitrary portion of the headrest frame 1 by any arbitrary means.
【０００９】しかして、ヘッドレストフレーム１に衝撃
荷重が掛かると、コイル部８が横軸部３より小径である
こと、ヘッドレストフレーム１の後方回動方向は、バネ
端部係止部１１が端部９をコイル部８の縮小方向に回動
させることから、ヘッドレストフレーム１の後方回動を
支持する。なお、コイル部８はヘッドレストフレーム１
の後方回動をロックするほど横軸部３より小径に形成し
ていないので、ヘッドレストフレーム１を後方回動させ
て位置調節を行える。また、ヘッドレストフレーム１を
前方に押すと、横軸部３中心に前方回動し、この場合、
径大方向端部１０は係止されていないから、バネ端部係
止部１１により端部９を図において反時計方向に回動さ
せることで、コイル部８の径を拡大させる方向に回動す
ることになって、軽く前方回動させ、前後位置調節を行
える。したがって、ヘッドレストフレーム１の回動方向
によって抵抗を変更し、前方回動を軽くできるので、操
作性を向上させる。特に、ブレーキ機構６はアンロック
させる操作を必要としないから、着座姿勢を変化させず
に、位置調節でき、調節が正確で、迅速で、容易にでき
る。However, when an impact load is applied to the headrest frame 1, the coil portion 8 has a smaller diameter than the horizontal shaft portion 3, and in the backward rotation direction of the headrest frame 1, the spring end engaging portion 11 is an end portion. Since the coil portion 9 is rotated in the contracting direction of the coil portion 8, the rearward rotation of the headrest frame 1 is supported. The coil portion 8 is the headrest frame 1.
Since it is not formed with a diameter smaller than that of the horizontal shaft portion 3 so as to lock the rearward rotation of the headrest frame 1, the headrest frame 1 can be rotated rearward to adjust the position. Further, when the headrest frame 1 is pushed forward, the headrest frame 1 rotates forward about the horizontal shaft portion 3, and in this case,
Since the radial end portion 10 is not locked, the end portion 9 is rotated counterclockwise in the figure by the spring end locking portion 11 to rotate in the direction in which the diameter of the coil portion 8 is increased. By doing so, it is possible to adjust the front-rear position by turning it slightly forward. Therefore, the resistance can be changed according to the rotating direction of the headrest frame 1 and the forward rotation can be lightened, so that the operability is improved. In particular, since the brake mechanism 6 does not require an unlocking operation, the position can be adjusted without changing the seating posture, and the adjustment is accurate, quick, and easy.
【００１０】また、ロック解除機構、操作機構等を必要
としないので、部品点数は著しく少なくでき、製造、組
立てが容易で、コストを低下させ、軽量化にも大きく貢
献する。また、コイル部８の直径および巻数を変更する
だけで、ヘッドレストフレーム１の回動抵抗を変更でき
るので、設計も頗る容易である。しかして、第２実施例
では、横軸部３に一対のコイルバネ７を設けたので、左
右側を強固に支持する。また、第３実施例では、一対の
コイルバネ７を設けるが、同一のコイルバネ７を使用
し、巻き方向が反対になるので、前方回動にも抵抗を与
えるので、確実に保持でき、同一のコイルバネ７を使用
するので、コストも一層低くする。第４実施例では、前
方回動抵抗を与えるコイルバネ７の弾力を弱くしている
ので、前方への調節を一層容易にする。Further, since the unlocking mechanism and the operating mechanism are not required, the number of parts can be remarkably reduced, manufacturing and assembling are easy, the cost is reduced and the weight is greatly contributed. Further, since the turning resistance of the headrest frame 1 can be changed only by changing the diameter and the number of turns of the coil portion 8, the design is easy. In the second embodiment, the pair of coil springs 7 is provided on the horizontal shaft portion 3, so that the left and right sides are firmly supported. In addition, in the third embodiment, a pair of coil springs 7 are provided, but the same coil spring 7 is used and the winding directions are opposite, so resistance is also imparted to the forward rotation, so that the coil spring 7 can be reliably held, and the same coil spring 7 is provided. Since 7 is used, the cost is further reduced. In the fourth embodiment, since the elastic force of the coil spring 7 that gives the forward rotation resistance is weakened, the forward adjustment can be made easier.
【００１１】[0011]
【効果】本発明は、水平方向の横軸部３およびシート側
に取付ける脚部４を有するピラー２に、前記横軸部３を
中心に前後方向に回動自在にヘッドレストフレーム１を
取付け、前記横軸部３には、前記フレーム１の回動はロ
ックしないが横軸部３よりも小径のコイルバネ７のコイ
ル部８を挿着し、前記コイルバネ７は、その一端１０を
自由端に、その他端９は前記フレーム１に係止し該フレ
ーム１の前方回動のとき前記コイル部８の径を拡大させ
るように構成したヘッドレストの前後調節装置としたも
のであるから、いずれかの任意の手段によりコイルバネ
７のいずれか一方の端部をヘッドレストフレーム１のい
ずれか任意の箇所に固定すれば、取付組立が完了し、ロ
ック解除機構、操作機構等を必要としないので、部品点
数は著しく少なくでき、製造、組立てが容易で、コスト
を低下させ、軽量化にも大きく貢献する。また、ヘッド
レストフレーム１を前方回動させるとき、コイル部８の
径を拡大させる方向に回動することになって、軽く前方
回動させ、操作性を向上させ、特に、ブレーキ機構６は
アンロックさせる操作を必要としないから、着座姿勢を
変化させずに、位置調節でき、調節が正確で、迅速で、
容易にできる。また、コイル部８の直径および巻数を変
更するだけで、ヘッドレストフレーム１の回動抵抗を変
更できるので、設計も頗る容易である。また、本発明
は、水平方向の横軸部３およびシート側に取付ける脚部
４を有するピラー２に、前記横軸部３を中心に前後方向
に回動自在にヘッドレストフレーム１を取付け、前記横
軸部３には、前記フレーム１の回動はロックしないが横
軸部３よりも小径のコイルバネ７のコイル部８を挿着
し、前記コイルバネ７は、その一端１０を自由端に、そ
の他端９は前記フレーム１に係止し該フレーム１の後方
回動のとき前記コイル部８の径を縮小させるように構成
したヘッドレストの前後調節装置としたものであるか
ら、コイル部８が横軸部３より小径であること、ヘッド
レストフレーム１の後方回動方向は、バネ端部係止部１
１が端部９をコイル部８の縮小方向に回動させることか
ら、ヘッドレストフレーム１に衝撃荷重が掛ってもヘッ
ドレストフレーム１の後方回動を確実に支持する。ま
た、本発明は、前記コイルバネ７は前記横軸部３の左右
側に設けたヘッドレストの前後調節装置としたものであ
るから、ヘッドレストフレーム１の左右両側で支持で
き、一層確実に支持できる。また、本発明は、前記コイ
ルバネ７は前記横軸部３の左右側に設け、互いの巻き方
向を反対となるように取付けたヘッドレストの前後調節
装置としたものであるから、一対のコイルバネ７を設け
るが、同一のコイルバネ７を使用すると、巻き方向が反
対になるので、前方回動にも抵抗を与え、確実に保持で
き、同一のコイルバネ７を使用するので、コストも一層
低くする。また、本発明は、前記コイルバネ７のうち、
前方回動に抵抗を与えるコイルバネ７の弾力を弱く形成
したヘッドレストの前後調節装置としたものであるか
ら、前方回動抵抗を与えるコイルバネ７の弾力を弱くし
ているので、前方への調節を一層容易にする。また、本
発明は、前記コイルバネ７は、コイル部８の両端にそれ
ぞれ端部を形成したヘッドレストの前後調節装置とした
ものであるから、コイルバネ７の挿着が頗る簡単にでき
る。According to the present invention, the headrest frame 1 is attached to the pillar 2 having the horizontal horizontal shaft portion 3 and the leg portion 4 mounted on the seat side so as to be rotatable in the front-rear direction about the horizontal shaft portion 3, A coil portion 8 of a coil spring 7 having a diameter smaller than that of the horizontal shaft portion 3 is inserted into the horizontal shaft portion 3 without locking the rotation of the frame 1, and the coil spring 7 has one end 10 as a free end and the other end. The end 9 is a front-back adjusting device for the headrest, which is configured to be locked to the frame 1 and to expand the diameter of the coil portion 8 when the frame 1 is rotated forward. By fixing one of the ends of the coil spring 7 to any arbitrary position of the headrest frame 1, the mounting and assembly is completed, and the lock release mechanism, the operation mechanism, etc. are not required, so the number of parts is extremely small. Can, manufacturing, assembly is easy, it reduces costs and greatly contributes to weight reduction. Further, when the headrest frame 1 is rotated forward, the headrest frame 1 is rotated in a direction in which the diameter of the coil portion 8 is enlarged, which is slightly rotated forward to improve operability. In particular, the brake mechanism 6 is unlocked. Since it does not require an operation to make it, the position can be adjusted without changing the sitting posture, the adjustment is accurate, quick,
You can easily. Further, since the turning resistance of the headrest frame 1 can be changed only by changing the diameter and the number of turns of the coil portion 8, the design is easy. Further, according to the present invention, the headrest frame 1 is rotatably mounted in the front-rear direction about the horizontal shaft portion 3 on the pillar 2 having the horizontal horizontal shaft portion 3 and the leg portion 4 mounted on the seat side. A coil portion 8 of a coil spring 7 having a diameter smaller than that of the horizontal shaft portion 3 is inserted into the shaft portion 3 without locking the rotation of the frame 1, and the coil spring 7 has one end 10 as a free end and the other end. Reference numeral 9 is a front-rear adjusting device for the headrest, which is configured to be locked to the frame 1 and reduce the diameter of the coil portion 8 when the frame 1 is rotated backward. The diameter of the headrest frame 1 is smaller than 3
Since 1 rotates the end portion 9 in the contracting direction of the coil portion 8, even if an impact load is applied to the headrest frame 1, the rearward rotation of the headrest frame 1 is reliably supported. Further, according to the present invention, since the coil spring 7 is a front and rear adjusting device for the headrest provided on the left and right sides of the horizontal shaft portion 3, it can be supported on both the left and right sides of the headrest frame 1 and can be supported more reliably. Further, according to the present invention, since the coil springs 7 are provided on the left and right sides of the horizontal shaft portion 3 and are attached to each other so that the winding directions of the coil springs 7 are opposite to each other, the front and rear adjusting devices are arranged. Although provided, if the same coil spring 7 is used, the winding directions are opposite, so that resistance can be given to forward rotation as well, and it can be reliably held, and since the same coil spring 7 is used, the cost is further reduced. In addition, the present invention provides, among the coil springs 7,
Since the headrest front-rear adjusting device is formed by weakening the elastic force of the coil spring 7 which gives resistance to the forward rotation, the elastic force of the coil spring 7 which gives the forward rotation resistance is weakened, so that the forward adjustment is further enhanced. make it easier. Further, according to the present invention, since the coil spring 7 is a headrest front-rear adjusting device in which both ends of the coil portion 8 are formed at both ends thereof, the coil spring 7 can be easily attached and detached easily.
【図１】 分解斜視図。FIG. 1 is an exploded perspective view.
【図２】 縦断側面図。FIG. 2 is a vertical sectional side view.
【図３】 作用状態側面図。FIG. 3 is a side view showing an operating state.
【図４】 第２実施例図。FIG. 4 is a second embodiment diagram.
【図５】 第３実施例図。FIG. 5 is a diagram of a third embodiment.
【図６】 第４実施例図。 １…ヘッドレストフレーム、２…ピラー、３…横軸部、
６…ブレーキ機構、７…コイルバネ、８…コイル部、９
…端部、１０…端部、１１…バネ端部係止部、１２…ボ
ルト、１３…フレーム。FIG. 6 is a diagram of a fourth embodiment. 1 ... Headrest frame, 2 ... Pillar, 3 ... Horizontal shaft part,
6 ... Brake mechanism, 7 ... Coil spring, 8 ... Coil part, 9
... ends, 10 ... ends, 11 ... spring end locking portions, 12 ... bolts, 13 ... frames.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年２月１３日[Submission date] February 13, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図３】 [Figure 3]
【図４】 [Figure 4]
【図５】 [Figure 5]
【図１】 FIG.
【図２】 [Fig. 2]
【図６】 [Figure 6]
Claims (6)
付ける脚部４を有するピラー２に、前記横軸部３を中心
に前後方向に回動自在にヘッドレストフレーム１を取付
け、前記横軸部３には、前記フレーム１の回動はロック
しないが横軸部３よりも小径のコイルバネ７のコイル部
８を挿着し、前記コイルバネ７は、その一端１０を自由
端に、その他端９は前記フレーム１に係止し該フレーム
１の前方回動のとき前記コイル部８の径を拡大させるよ
うに構成したヘッドレストの前後調節装置。1. A headrest frame 1 is attached to a pillar 2 having a horizontal horizontal shaft portion 3 and a leg portion 4 mounted on the seat side so as to be rotatable in the front-rear direction about the horizontal shaft portion 3, and the horizontal shaft portion. A coil portion 8 of a coil spring 7 having a diameter smaller than that of the horizontal shaft portion 3 is inserted into the portion 3 without locking the rotation of the frame 1, and the coil spring 7 has one end 10 as a free end and the other end 9 Is a front-rear adjusting device for a headrest, which is configured to be locked to the frame 1 and to expand the diameter of the coil portion 8 when the frame 1 is rotated forward.
付ける脚部４を有するピラー２に、前記横軸部３を中心
に前後方向に回動自在にヘッドレストフレーム１を取付
け、前記横軸部３には、前記フレーム１の回動はロック
しないが横軸部３よりも小径のコイルバネ７のコイル部
８を挿着し、前記コイルバネ７は、その一端１０を自由
端に、その他端９は前記フレーム１に係止し該フレーム
１の後方回動のとき前記コイル部８の径を縮小させるよ
うに構成したヘッドレストの前後調節装置。2. A headrest frame 1 is attached to a pillar 2 having a horizontal horizontal shaft portion 3 and leg portions 4 mounted on the seat side so that the headrest frame 1 is rotatable around the horizontal shaft portion 3 in the front-rear direction. A coil portion 8 of a coil spring 7 having a diameter smaller than that of the horizontal shaft portion 3 is inserted into the portion 3 without locking the rotation of the frame 1, and the coil spring 7 has one end 10 as a free end and the other end 9 Is a front-rear adjusting device for a headrest, which is configured to be locked to the frame 1 and reduce the diameter of the coil portion 8 when the frame 1 is rotated rearward.
コイルバネ７は前記横軸部３の左右側に設けたヘッドレ
ストの前後調節装置。3. The headrest front-back adjusting device according to claim 1, wherein the coil spring 7 is provided on the left and right sides of the horizontal shaft portion 3.
コイルバネ７は前記横軸部３の左右側に設け、互いの巻
き方向を反対となるように取付けたヘッドレストの前後
調節装置。4. The headrest front-rear adjusting device according to claim 1, wherein the coil springs 7 are provided on the left and right sides of the horizontal shaft portion 3 and are attached so that their winding directions are opposite to each other.
うち、前方回動に抵抗を与えるコイルバネ７の弾力を弱
く形成したヘッドレストの前後調節装置。5. The headrest front-rear adjustment device according to claim 4, wherein the coil spring 7 of the coil spring 7 is formed so as to have a weak elasticity.
または請求項４または請求項５において、前記コイルバ
ネ７は、コイル部８の両端にそれぞれ端部を形成したヘ
ッドレストの前後調節装置。6. Claim 1 or claim 2 or claim 3.
Alternatively, in claim 4 or claim 5, the coil spring 7 is a headrest front-rear adjusting device in which both ends of a coil portion 8 are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33336794A JPH08164035A (en) | 1994-12-15 | 1994-12-15 | Back-and-forth adjusting device of headrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33336794A JPH08164035A (en) | 1994-12-15 | 1994-12-15 | Back-and-forth adjusting device of headrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08164035A true JPH08164035A (en) | 1996-06-25 |
Family
ID=18265321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33336794A Pending JPH08164035A (en) | 1994-12-15 | 1994-12-15 | Back-and-forth adjusting device of headrest |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08164035A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009213587A (en) * | 2008-03-08 | 2009-09-24 | Bizen Hatsujo Kk | Headrest |
| JP5654177B1 (en) * | 2014-02-28 | 2015-01-14 | 備前発条株式会社 | Headrest |
-
1994
- 1994-12-15 JP JP33336794A patent/JPH08164035A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009213587A (en) * | 2008-03-08 | 2009-09-24 | Bizen Hatsujo Kk | Headrest |
| JP5654177B1 (en) * | 2014-02-28 | 2015-01-14 | 備前発条株式会社 | Headrest |
| WO2015129050A1 (en) * | 2014-02-28 | 2015-09-03 | 備前発条株式会社 | Headrest |
| US9758077B2 (en) | 2014-02-28 | 2017-09-12 | Bizen Hatsujo Co., Ltd. | Headrest |
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