To provide a mounting structure for a damping member on a balance spring whereby the damping member can be mounted on the balance spring even in a case where the number of winds of a coil portion is small.SOLUTION: A balance spring 8 has a coil portion 35a and a pair of spring arm portions 36a and 36b, and a damping member 9a is configured to be elastically deformable and have an annular shape in a free state. Each of the pair of spring arm portions 36a and 36b is inserted through an inner side of the damping member 9a. In addition, the damping member 9a is attached to the balance spring 8 in a state in which a crossing portion 43 that is an obstruction portion, which is provided between portions of the damping member 9a through which the pair of spring arm portions 36a and 36b are inserted and which obstructs the passage of the coil portion 35a through the inner side of the damping member 9a, is disposed on a radially outer side of the coil portion 35a.SELECTED DRAWING: Figure 5
【課題】コイル部の巻き数が少ない場合にも、バランスばねに制振部材を取り付けることができる、バランスばねに対する制振部材の取付構造を実現する。【解決手段】バランスばね8を、コイル部35aと、1対のばね腕部36a、36bとを有するものとし、制振部材9aを、弾性変形可能で、自由状態で環状に構成されたものとする。制振部材9aの内側に1対のばね腕部36a、36bのそれぞれを挿通し、かつ、制振部材9aのうちで1対のばね腕部36a、36bが挿通した部分の間に備えられた、制振部材9aの内側をコイル部35aが通過することに対して障害となる障害部である交差部43を、コイル部35aの径方向外側に配置した状態で、制振部材9aをバランスばね8に対して取り付ける。【選択図】図5
MOUNTING STRUCTURE FOR DAMPING MEMBER ON BALANCE SPRING AND STEERING COLUMN DEVICE
バランスばねに対する制振部材の取付構造及びステアリングコラム装置
2023-06-14
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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