PROBLEM TO BE SOLVED: To provide a forward ducking type headrest apparatus which has a simple structure, may reduce production cost, and is rotated between a forward ducking position and a standing position with a simpler operation.SOLUTION: It comprises stay bolts 2 at both sides and a base member 5 arranged in a pad member, and the base member 5 is attached in a manner allowing standing rotation and forward ducking rotation on an axis part 3 arranged at middle section between both side stay bolts 2. It comprises a bearing part 4 rotatably supporting the base member 5 on the axis part 3, a cam member 12 to which an arced-shape cam groove is provided at a periphery position of the axis part, an operation pin 10 which is slidably inserted to be supported on an axis hole arranged on the base member, a flange part 11 capable fitting on a large-diameter cam groove arranged on the cam groove, a spring member 17 energizing the operation pin so that the flange part fits to the large-diameter cam groove, and a twist spring member 16 energizing the base member 5 in a forward ducking direction relatively to the axis part 3.SELECTED DRAWING: Figure 1
【課題】構造が簡単で、製造コストを削減することができ、より簡単な操作で、前倒位置と起立位置間で回動する前倒式ヘッドレスト装置を提供する。【解決手段】両側のステー2とパッド部材内に設けられるベース部材5と、を備え、両側のステー2の中間部に設けた軸部3に対し、ベース部材5が起立回動及び前倒回動可能に取り付けられる。軸部3に対しベース部材5を回動可能に支持する軸受部4と、軸部の外周位置で円弧状のカム溝を設けたカム部材12と、ベース部材に設けた軸孔に摺動可能に挿通支持された操作ピン10と、カム溝に設けた大径カム溝と嵌合可能なフランジ部11と、フランジ部が大径カム溝と嵌合するように操作ピンを付勢するバネ部材17と、軸部3に対しベース部材5を前倒方向に付勢する捻りバネ部材16と、を備える。【選択図】図1
FORWARD DUCKING TYPE HEADREST APPARATUS
前倒式ヘッドレスト装置
2018-09-20
Patent
Electronic Resource
Japanese