DE1655280C - Hydraulically actuated pulse generator for generating a switching pulse when a predetermined pressure difference occurs between two pressure medium circuits connected to the pulse generator, in particular the two brake circuits of a dual-circuit brake system - Google Patents

Description

655 280
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u. "/ - ι.- ί-hlaes" hot on the

Direction of the resulting compressive force either via the corresponding, _n igniter housing ah

via the fixed piston stop 14 and the responding fixed Ans α t? , _K o! Bcns

impact disc is at Bias ^ "J _{urch a} 16 or over the solid Kolbenan- The switching pin. 9
impact 13 and the stop disk 15 is tensioned. biaxially shifted " ^{nü D} _s * _ruiin
The other end of the centering spring is supported by 5 switch oaer connected to it

1 sheet of drawings

Claims (14)

1 2 This design of the centering _{device is really} expensive. The present invention ^{1 att} - ' ^ntans P ^rucll: | _{therefore it is} based on the task of providing the impetus to further simplify according to the main patent without Hydraulically operated pulse generator to ensure that its function is adversely affected,
/ creation of a. Switching pulse when a This object is achieved according to the invention vorbestimnr.en pressure difference between two releases that the spring force of a preloaded the pulse generator connected pressure medium centering spring is exerted between the two circles, in particular the two brake circuits is arranged and slowly displaceable stops a dual-circuit brake system, in which in an io the over these slow-moving stops in Cylinder housing a spring force in the middle position of the piston to the approximately m The same distance on the piston and on the Zy piston is held in a floating position is provided that abin the cylinder housing handheld housing provided fixed stops divided into two pressure chambers, each supported by au. one of the two pressure medium circuits is connected are, in which the pulse generator also shows two longitudinal drawings and is in the following beversehiebliche Stops are provided that wrote in: the position of the piston through the spring force. In the drawing, the cylinder housing is indicated by 1. equals' / g each in contact with a piston on the piston with 2, the centering spring with 3 and the The fixed stop located today and designated by 5 and 6 on one of the two pressure chambers. On the Fixed stop piston 2 located in the cylinder housing, two sealing rings 7 and 8 are arranged, are held, according to main patent 1 655 279, which has the middle piston part opposite the two characterized in that the Fe pressure spaces 5 and 6 seal. The middle, double force of a pretensioned centering spring is exerted on the two sealing rings 7 and 8, which is located between the two longitudinal parts and has an annular groove of conical transverse stops (15 and 16) cut into which is a switching pin 9, which is arranged in a drilling and which is guided over this longitudinal displacement of the cylinder housing 1, engages borrowed stops in the central position of the piston and "when the piston 2 is in its central position, (2) approximately in the same Distance each rests on the bottom of the annular groove 10, so that when there is an axial displacement of the piston 2 on the piston (2) and on the cylinder housing (1) 30 from the intended fixed: 13 and groove 10 is lifted out. 14). In the pressure chamber 6 of the pulse generator are between the fixed stops 11 and 12 on the cylinder housing 1 and the fixed stops 13 and 14 35 to the piston 2 the centering spring 3 and the two opposite the piston 2 and the cylinder housing 1 slowly sliding stop disks 15 and 16 arranged so that the centering spring 3 on the one side over the stop washer 15 to the 40 beat 11 and 13 and on the other side over The invention relates to a hydraulically the stop disk 16 on the stops 12 and actuatable pulse generator for generating a switching 14 is supported. The two pressure chambers 5 and 6 are pulsed when a predetermined pressure connection (not shown) occurs to the two brake circuits of a dual-circuit brake system connected to the pressure medium circuits, for example the two pressure medium circuits connected to the pulse generator, especially 45 brake circuits of a dual-circuit brake system. The two piston ends 19 and 20 of the collage, in which in a cylinder housing a by bens2 represent with the end walls of the cylinder spring force held in the central position, floating housing two end stops, so that the piston arranged piston is provided that the cylinder with Deflection due to a pressure difference is only subdivided into two pressure chambers by the handset housing, each of which can be moved the required path in one or the other direction to one of the two pressure medium circuits and which are thereby revealed in which pulse generator also two occurring volume losses stay low
Longitudinally displaceable stops are provided, which are the pressures in the normal operating case in the central position of the piston due to the spring force, the two pressure medium circuits are approximately equal, so at the same time in contact with one on the piston 55 of the piston 2 through the centering fields 3 in a co-located fixed stop as well as one held in the cylindrical position. Low operational pressure regulator housing The fixed stop is held, fluctuations are made possible by the arrangement of the according to main patent 1 655 279. tensioned centering spring 3 balanced. An off-die Centering device of the hydraulically actuated steering of the piston 2 from its central position can Baren pulse generator according to the main patent is only 60 if the pressure difference from two pre-tensioned centering springs, the resulting compressive force in each case is greater than the pre-tensioning between one fixed and one longitudinal displacement force of the centering spring. chen stop are arranged, wherein in the middle reaches the pressure difference between the two position of the piston, however, the two slowly shifting pressure medium circles have a value that is multipli stops of the associated centering springs 65 is adorned with the cross-sectional area of the piston 2 at the same time in contact with a force on the piston that is greater than the pretensioning force of the Zen situation fixed stop and a stop trierfeder3, the piston 2 is from its Mittelim Cylinder housing are held. shifted position, the centering spring 3 depending on