JPS6180160U

JPS6180160U -

Info

Publication number: JPS6180160U
Application number: JP16526084U
Authority: JP
Priority date: 1984-10-31
Filing date: 1984-10-31
Publication date: 1986-05-28

Description

[Brief explanation of the drawing]

第１図は、本考案の実施例であるブレーキブー
スタの要部断面図であり、第２図は、そのブース
タ全体の正面断面図である。第３図〜第５図は、
それぞれ第１図における可動体の側面図、正面図
および裏面図であり、第６図は、同じブースタを
第１図とは異なつた作動状態で示す要部断面図で
ある。１２…シエル、１４…パワーピストン、２０…
低圧室、２２…高圧室、２４…プランジヤバルブ
、２６…プツシユロツド、３４…制御弁、４０…
リアクシヨンレバー、４１…第一案内面、４２，
４４，４６…支持部、４８…第二案内面、５０…
可動体。 FIG. 1 is a sectional view of essential parts of a brake booster according to an embodiment of the present invention, and FIG. 2 is a front sectional view of the entire booster. Figures 3 to 5 are
They are a side view, a front view, and a back view of the movable body in FIG. 1, respectively, and FIG. 6 is a sectional view of a main part showing the same booster in an operating state different from that in FIG. 1. 12...Ciel, 14...Power Piston, 20...
Low pressure chamber, 22... High pressure chamber, 24... Plunger valve, 26... Push rod, 34... Control valve, 40...
Reaction lever, 41...first guide surface, 42,
44, 46...Support part, 48...Second guide surface, 50...
Movable body.

Claims

[Claims for Utility Model Registration] The power is provided in such a way that an airtight chamber formed within the shell is divided into a low pressure chamber and a high pressure chamber, and is activated by the pressure difference between the low pressure chamber and the high pressure chamber. a piston, an input member that is fitted into a center hole of the power piston so as to be relatively movable in the axial direction and is connected to a brake operating member to receive a brake operating force; and a relative relationship between the input member and the power piston. a control valve that controls the pressure difference between the high pressure chamber and the low pressure chamber based on movement; an output member that is provided so as to be movable relative to the power piston and the input member in the axial direction; and an input member, and a reaction lever whose intermediate portion is supported by the output member from the opposite side, and the brake operating force input to the input member by the assisting action of the power piston is applied to the reaction lever. In the brake booster, the force is multiplied and transmitted to the output member according to a lever ratio determined by the distance between supporting positions of the levers, a movable body is interposed between the power piston and the reaction lever, and the power pistons are and a reaction lever are provided with opposing guide surfaces that guide the power piston in the radial direction while pinching the movable body, and these guide surfaces are used to control the input power, although the movable body is not moved at all times. When the member moves forward by a certain amount or more with respect to the power piston and the reaction lever is rotated by a certain angle or more about the movable body as a fulcrum, the distance between the guide surfaces becomes wider toward the input member, and the distance between the two guide surfaces becomes wider toward the input member. A brake booster characterized in that the movable body is moved toward the input member by a clamping action of a guide surface.