Parking brake operating device
AssigneeAisin Seiki Kabushiki Kaisha
InventorTakeo Yamazaki
Life of this patent
Estimating the term…
Abstract
A parking brake operating device in which a member having two cams and spring are disposed outside a handle by coaxially securing a sleeve to one end of a plunger, and by providing in the handle a shaft member for insertion into the sleeve as to be supported, cam surfaces on the expanding portion at the end of the shaft member and at the opposite position on the end surface on the handle side of the sleeve, and in the sleeve a spring for pressing these cam surfaces. This structure enables a rotatable connection of the handle with the plunger only when the handle is pulled such that actuation of the parking brake is maintained even when the handle is turned when mistakenly touched by the hands or legs while the parking brake is actuated.
Claims11
A parking brake operating device comprising:
- a plunger mounted on a car body such as to be slidable in the axial direction thereof and rotatable around the axis thereof;
- a handle attached to one end of said plunger such as to be slidable in the axial direction of said plunger and rotatable around the axis of said plunger;
- a parking brake actuating cable which is connected to the other end of said plunger such that a parking brake will be actuated when a driver pulls said plunger in the act of pulling said handle;
- a locking mechanism which inhibits said plunger from returning due to a reaction force of said brake when said plunger is pulled by said driver and which releases said inhibition by a rotation of said plunger;
- a ring cam surface facing in the direction opposite to the handle pulling force provided on said plunger;
- a ring cam surface corresponding to said cam surface provided on said handle;
- a spring for retaining said handle at a predetermined angular position in relation to said plunger by pressing said cam surfaces, thereby to connect said handle with said plunger for unitary rotation only when said handle is pulled;
- a sleeve coaxially fixed on said one end of plunger;
- and a shaft member provided on said handle for inserting into said sleeve so as to be supported;
- said cam surfaces being provided on an expanded portion at the end of said shaft member and at the opposite position of the end surface on the handle side of said sleeve and said spring being disposed in said sleeve.
Dependencies are inferred from the claim text.