DD209150A1 - ARRANGEMENT OF A UNIT FOR SECONDARY BRAKE AND COUPLING, ESPECIALLY FOR MOTOR VEHICLES - Google Patents

Abstract

This invention relates to an arrangement of special hydraulic slave cylinders for secondary operation of brake and clutch, especially for motor vehicles, wherein any hydraulic transmitter unit serves pressure generator and a partially elastic conduit system is a connection to the slave cylinders. The known technical solutions involve rigid connections for transmission with shafts and levers or cables whose efficiencies lead to such lossy quantities in the transmission system that the operators assume considerably higher values than stipulated in international regulations. In addition, at least a high assembly effort is required, which usually requires an intervention in the actual hydraulic clutch or brake system required. This invention is free of these disadvantages, since the clutch and brake by means of hydraulic slave cylinder without intervention in the actual brake or clutch system, with unchanged operator forces, are to be operated. These slave cylinders are due to their adjustable length universally installed in the Gestaenge of the brake and clutch system and it is possible, depending on the application to arrange the appropriate train or impression cylinder.

Description

Arrangement of a unit for the second operation of the brake and clutch, in particular for motor vehicles

Field of application of the invention

The invention relates to an arrangement of special hydraulic lehmerzylindern for secondary operation of brake and. Coupling, in particular for motor vehicles, wherein any hydraulic transmitter unit serves as a pressure generator and a partially elastic line system represents a connection "to the cylinders Lehsierzylindern,"

The abovementioned arrangement serves to enable the secondary actuation of a vehicle clutch and brake, z, B, in the context of a junior education *

This is important because with the increasing traffic density on our roads, there is a need to be able to exert an effective influence on brake and clutch-related malpositions.

Characteristic of the known technical solutions

Solutions are known in which the power transmission through a rigid connection (shaft) or cables 'is done' Prinzipmäßig 'are' the: cables laid by 180 °; causing _.rdaß; the low cable efficiencies to such lossy magnitudes in the transmission system result in the actuation forces assuming significantly higher values than laid down in international regulations.

The transmission of forces by means of a rigid shaft is associated with a high monthly outlay and can not be realized in every case. "Restrictive conditions often result in too little space and the arrangement of other units in the relevant unit.

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Furthermore, solutions in which IM control valves or sensor-Heinner cylinder units, which are particularly used to support the actuating forces, are known »

Often these "units are only suitable for purely hydraulic systems and an intervention in the brake and clutch system unavoidable"

DE-OS 28 05 4-19 describes a device for actuating a clutch in the output of a drive unit in a motor vehicle, characterized by a linkage or cable characterized in that in the transmission means a hydraulic unit combined to form a unit is turned on.

This described design has the following decisive disadvantages »An application is only possible with a mechanical transmission unit to the encoder cylinder.

Since adaptation to any type of motor vehicle is required, the device does not have a universal character »

The installation of the system is connected to a high installation cost, which has enormous Hüstseiten consequence * The unit is an intervention in the coupling system inevitable, so that when removing an unconditional restoration of the original state is required, otherwise the coupling system remains inoperative,

Furthermore, in the PS 63c 19/01 1 787 066 a multiple pedal arrangement, preferably described for apprenticeship., Mounted in a Fußhebelwerk..Seilzüge in two additional pedals and on the other hand. the vehicle-Ahrzeugspritzwand are attached. The cable sheaths are supported on the main pedals.

This multi-pedal arrangement with cables has several ITachteile,

The low cable efficiencies in the transmission system lead to such lossy people, which require very high operating forces «

The arrangement is not applicable in every case, since the installation of ssil is prevented by units located in the installation space,

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In addition, the laying of cables represents restrictive and disabling conditions in the Fussrauia.

Object of the invention

The aim of the invention is to provide a second operating device, in particular for motor vehicle clutches and brakes, wherein clutch and brake with the help of! Hydraulic Uehmeraylinder without intervention in the actual brake or clutch system, with unchanged operating forces, su are actuate.

Explanation of the essence of the invention

The invention has for its object to provide an independent secondary control device, in particular for Kraftfahrζeugkupplungen and brakes, clutch and Br erase without intervention in the actual system with unchanged operator forces using hydraulic transmission elements to operate *

According to the invention the object is achieved in that special .hydraulic Kehserzylinder that in the.-. Pressure- or drawbar - by- brake and. The coupling of the motor vehicle is switched on, or z, B »are directly preceded by the master cylinder * The hydraulic ratio of the slave cylinder is adapted to the path-force relationships at the outgoing, returning point and the values for the actuating forces correspond to ¹ international requirements,

The loan cylinders are more desirably designed so that they can be used without special training or aids in ^:? Any motor vehicle can be scaffolded, provided that mechanical linkages are present as transmission elements for disengaging the clutch and the brake. The hydraulic pressure built up in the transmitter unit propagates towards the driver cylinders and acts upon the piston (s) thereof. , which move away from their stop in the towing cylinder * Power is transmitted to the release points via the push rods or push rods screwed into the pistons of the iTehmerzylindsr

on the ends of fork heads are fixed with which the complete slave cylinder are mounted instead of the train or push rods located on the vehicle. In the event of failure of the hydraulic system in the second operating system, the actuator cylinders, whose pistons immediately return to their stop in the housing, act like the vehicle's own train or pressure linkage, so that the brake and clutch of the vehicle remain fully functional,

Ausführungsbe! Games

The invention will be explained in more detail below with reference to three exemplary embodiments.

Pig «1: Clutch cylinder for pressure linkage for disengaging brake and clutch,

Pig, 2: slave cylinder for drawbar to disengage brake and clutch ».

Pig, 3: Ifiehmersylinder, the master cylinder upstream, to disengage the brake,

According to Pig »1 is in a ITehmerzylindergehäuse 1 which has a fork 9, a piston 8 is guided with a push rod 3, on the threaded end of a clevis 4 is adjustably arranged, which has a nut 5 for fixing the length adjustment, '. Sin protection bellows 2, which is mounted on the JETehaerzy lower housing 1 and guided on the pressure rod 3, prevents dirt and - foreign body entry into the cylinder bore »via a port 6, the lehmerzylinder 1 is filled with a hydraulic medium and built up the working pressure. With the screw 7 venting the jtfehserZylinders 1 is possible, the ITahiaerzylindsr 1 with its fork 9 and dam Gabelkopf instead of-Yerbindungsdruckgestänge that releases brake or clutch on the vehicle * *.

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S ¹ Ig, 2 shows a ITehmersylinder to the housing 1 a screw plug 10 is fixed, which leads a piston 8 with a piston rod 3, on the threaded end of a clevis 4 is arranged adjustable, which has a nut 5 for fixing the length adjustment,

A protective bellows 2, which is mounted on the screw plug 10 and guided on the piston rod 3, protects against the entry of external media.

A second length adjustment is by the rod 6, which is screwed on the one hand in the Ifehmerzylinder 1 and on the other hand carries on its threaded end a clevis 4, which in turn is secured by a nut 5, as the rod 6 in the cylinder 1, against rotation,

The slave cylinder 1 is filled via a connection 9 with a hydraulic medium and the working pressure is built up. By opening the screw 7 it is possible to ventilate the cylinder 1

The hauler cylinder 1 is equipped with its fork heads 4 instead of Verbindungszuggestänge which releases the brake or clutch on the vehicle *, * _; .

A. Compression spring 11 pushes after actuation of the lifting-rzylinders 1 piston 8 with piston rod 3 in the starting lags, stop piston 8 to screw plug 10 back

FIG. 3 shows an ITaker cylinder in whose housing 1, which has a fork 7, a piston 2 with a push rod 3 is guided.

About a terminal 6 of the looper cylinder 1 is pleased with a HydraulilGüeüiusr and the working pressure built, by opening the screw 5 is a venting of Siehmerzylindsrs 1 possible ·

The lehsierzylinder 1 is mounted ssiner fork 7 instead of a push rod with fork head of a standard main br eisszy Linders, wherein the push rod 3 of the Uehaersylinders 1 is supported in the piston of the standard master cylinder and the Schutsbalg 4 estimates from external influences.

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The arrangement of special Lehmerzylindem for secondary actuation of the brake and clutch of a motor vehicle is simple and with little installation and time in each standard motor vehicle, which Zug- or pressure linkage has as transmission elements for brake and clutch, on and ausrüstbar "

Further advantages are that in case of failure of the hydraulic system in the secondary control system, the ITehmerzylinder act as the train own train or pressure rod, so that the brake and clutch of the vehicle are not affected-The high efficiency achieved by hydraulic action allows low operating forces "

Claims (4)

Erfindungsansprücfae 1, Rehmerzylinder entspreciiend Pig, 1, characterized in that its housing (1) a fork (9) and a clevis (4) on the thread of a piston rod (3) "adjustably arranged for fixing length adjustment preferably a nut (5 ) and that the hauler cylinder with the fork (9) and the clevis (4) instead of rom connection pressure rod for brake and clutch can be fitted to a motor vehicle, 2, slave cylinder according to Fig, 2, characterized in that its housing (1) has a rod (6) and a piston (8) with a piston rod (3), on the threaded ends fork heads (4) are adjustably arranged, for fixing 'the Length adjustment preferably have a nut (5) and that the iTehmerzylinder with the clevis EN (4) can be fitted instead of the Verbindungszuggestänge for brake and clutch on a motor vehicle, 3, Hehmerzylinder according to Fig .. 3 characterized in that its housing (1) has a fork (7) and a piston (2) with a piston rod (3) and that the JTe hm he cylinder with the fork (7) Place a push rod with clevis of a standard master cylinder is mounted, with the piston rod (3) of the Ifehmer cylinder in the Kol ben of the standard master cylinder is supported *. 4, Uehmerzylinder after- point 1 and following.dadurch that they can be fitted without intervention in the vehicle: brake or clutch system without additional aids and · welding with conventional connecting and securing elements and that in case of failure of the hydraulic la secondary control system clutch and. Brake of the vehicle will not be affected functionally. For this .. ^, Rarely drawings