DE102013215310A1 - Storage chamber valve - Google Patents

Abstract

The invention relates to a storage chamber valve (1) having a storage chamber (5) and a storage piston (10) movably guided in the storage chamber (5) and a passage (46) arranged in a valve body (40), via which the storage chamber (5) a closing element (20) in a closed position seals a valve seat (44) arranged at the edge of the passage (46), wherein an opening device (60) passes through the passage (46) and passes from the accumulator piston (10 ) is movable, which at the opening device (60) generates an actuating force, wherein a stroke of the accumulator piston (10) via the opening device (60) causes an opening stroke of the closing element (20). According to the invention, a common housing (30) designed as a sleeve is provided which surrounds at least the valve body (40), the closing element (20) and the storage chamber (5) with the accumulator piston (10).

Description

State of the art

The invention relates to a storage chamber valve according to the preamble of independent claim 1.

Storage chamber valves are known from the prior art in which a closing element or sealing body of a spring-assisted closed valve is moved from a valve seat or sealing seat into an open position by a pin connected to a storage chamber piston as soon as the storage chamber volume falls below a threshold value, i. the storage chamber piston approaches a stop arranged in the region of the sealing seat.

In the known constructions of storage chamber valves, the sealing body of a spring-assisted closed valve is moved into the open position by a pin fixedly connected to the storage chamber piston as soon as the storage chamber volume falls below a threshold value, i. the storage chamber piston approaches an upper stop. To close the valve seat in a base braking or partial braking, the driver operates the brake pedal. As a result, the piston of the master cylinder is displaced and a volume of fluid is displaced into the brake pipe. In an ESP (Electronic Stability Program) with the storage chamber valve, the accumulator piston is pushed down and the accumulator chamber valve moves from a normally open position to a closed position. Now (only) the driver can build up brake pressure. The significant amount of brake pedal travel up to this point will be perceived by the driver as a free travel without much counterforce and / or braking action; This may be uncomfortable and undesirable for the driver.

The significantly large brake pedal travel acts mainly due to the relatively large diameter of the accumulator piston, which corresponds approximately to the order of the diameter of the master cylinder, and a translation of the brake pedal. As a result of the directly proportional connection of the accumulator piston stroke to the pin stroke of the accumulator chamber valve, a rather large, actually undesirable volume intake is generated in the frequent case of basic braking.

From the patent US 7,543,896 B2 For example, a hydraulically controlled storage chamber valve is known in which a spring-loaded ball seat valve is opened via a plunger in the accumulator piston. This is done at a specified for the system balance of power between spring biasing force and hydraulically effective force. The actuation of the ball seat valve via a cylindrical metallic plunger, which is pressed into the accumulator piston. The accumulator piston also receives a sealing ring and a guide ring. Between the accumulator piston and the closure lid, which is connected via a Halteverstemmung with the pump housing, there is a correspondingly biased compression spring. The spring force acts against the hydraulically acting force on the accumulator piston and, in the event of an excess of the spring force, causes the accumulator piston-tappet combination to be displaced in the opening direction of the accumulator chamber valve. The ball is moved by the plunger from the seat and opened the storage chamber valve. Due to the tapered shape of the plunger tip, the ball is pressed from the seat side against a cylindrical wall of a filter.

In the published patent application DE 42 02 388 A1 For example, a hydraulic brake system for a motor vehicle is described. The brake system described comprises a hydraulically controlled storage chamber valve with a biased by a first compression spring closing element which seals a valve seat in a valve body, and a plunger which is connected to a loaded by a second compression spring accumulator piston and the closing element presses out of the valve seat, if between the spring biasing forces and a hydraulically effective force is a specified balance of forces. In these constructions of storage chamber valves, the sealing body of the spring-assisted closed valve is moved into the open position by a pin connected to the accumulator piston as soon as the accumulator chamber volume falls below a threshold value, ie the accumulator piston approaches the stop.

Disclosure of the invention

The storage chamber valve according to the invention with the features of independent claim 1 has the advantage that adjustment processes are made possible by the merger of storage chamber valve and storage chamber in a common module housing, through which a narrowing of the functional tolerances can already be achieved in the component assembly. In addition, embodiments of the storage chamber valve according to the invention allow for use in a hydraulic brake system of a motor vehicle due to the multi-stage design of the opening device of the storage chamber valve advantageously a reduction in volume and thus also a Pedalwegverlängerung in the basic braking. The common module housing accommodates a valve body which is axially displaceable, adjustable and finally fixable, for example by laser welding. By this displaceability of the valve body, the closing point of the corresponding sealing element or closing element can be adjusted, for example, with respect to a storage piston position, a storage spring force and a spring force of a spring element of an opening device.

Embodiments of the present invention provide a storage chamber valve having a storage chamber and a storage piston movably guided in the storage chamber and a passage arranged in a valve body, via which the storage chamber is connected to a first fluid connection. In this case, a closing element in a closed position seals a valve seat arranged at the edge of the feedthrough. An opening element passes through the passage and is movable by the accumulator piston, which generates an actuating force on the opening element, wherein a stroke of the accumulator piston via the opening element causes an opening stroke of the closing element. According to the invention, a common housing designed as a sleeve is provided which surrounds at least the valve body, the closing element and the storage chamber with the accumulator piston.

The measures and refinements recited in the dependent claims advantageous improvements of the independent claim 1 storage chamber valve are possible.

It is particularly advantageous that the at least one spring element can be pre-stressed by the stroke of the accumulator piston and can generate an additional opening force acting on the closing element during the opening process. Here, the at least one spring element via the opening element causes a defined additional partial stroke in the opening direction of the closing element when the accumulator piston has reached its defined upper stop. Here, during a closing operation, the closing element is movable over the predetermined additional partial stroke against the force of the at least one spring element substantially without volume change from an open position toward the closed position, wherein the additional partial stroke is dependent on the adjustable distance of the opening element to the accumulator piston in the open position. For example, before the movement of the opening element, the accumulator piston can first pretension the at least one spring element and then move the opening element with the at least one spring element until it reaches its defined upper stroke stop. Although the opening force exerted by the at least one spring element is small compared to the opening force through the accumulator piston, it only occurs in the open state of the accumulator chamber valve, i. in the pressure-balanced state at lower acting fluid forces to wear, and ensures an additional opening stroke of the closing element for more flow. Thus, the total stroke of the closing element is formed from a first partial stroke with participation of the accumulator piston, the opening element and the closing element and the additional partial stroke with participation of the at least one spring element, the opening element and the closing element.

In the open state of the storage chamber valve with the closing element in the open position and with almost empty storage chamber and the accumulator piston on the upper stroke stop, is the closing element, due to a triggered by the driver via a brake pedal braking, with increasing master cylinder pressure and acting on the closing element fluid force first Spring force of the at least one spring element overcome, so that the closing element is moved over the additional partial stroke with low volume absorption in the closed position. After the additional partial stroke has been completed, the opening element reaches the accumulator piston so that the further closing movement over the first partial stroke is moved in the closing direction while the accumulator piston is moved via the closing element and the opening element with a relatively large volume intake until the closing element rests sealingly in the valve seat. Due to the multi-stage design of the opening device of the storage chamber valve advantageously results in the reduction of Pedalwegverlängerung because during the closing movement of the closing element by the master brake cylinder pressure set by the large accumulator piston is moved shortly before the closed position of the storage chamber valve. The volume intake and the pedal travel extension are correspondingly low.

In an advantageous embodiment of the storage chamber valve according to the invention, the closing element can be guided tiltably on the valve seat, wherein the closing element has a guide contour on which a support of the opening element triggers a corresponding tilting moment. This special form of the sealing element or closing element serves to simplify the opening movement of the sealing element or closing element. The opening element, for example, dives almost centrically into a guide opening of the sealing element or closing element, so that the resulting force-action lines are very close or identical. In a further stroke movement of the opening element, the support of the opening element slides along the oblique guide contour, so that there is a distance between the force lines of action and a Torque is generated which rolls the sealing element or closing element out of the valve seat about a pivot point. Upon a further stroke movement of the opening element and / or a pressure equalization above or below the sealing element or closing element, the sealing element or closing element lifts off from the valve seat and releases a correspondingly larger flow cross-section. The described rolling movement of the sealing element or closing element is considered to be favorable at the moment of opening in terms of power requirement for opening. Alternatively, the sealing element or closing element can be supported during the rolling movement on an additional guide element, which is arranged, for example, on a filter.

In a further advantageous embodiment of the storage chamber valve according to the invention, the valve body can be received axially displaceable in the region of a first edge in the housing, wherein the valve body is fixed fluid-tight at a predetermined position on the housing and the housing terminates at the first edge. The valve body can be fixed in a fluid-tight manner, for example by sealing in and / or by caulking in the housing designed as a sleeve. The valve body may for example be designed as a hat-shaped sleeve with implementation in which the closing element is guided and whose open end is covered with a filter. The designed as a hat-shaped sleeve valve body may preferably be prepared in a deep-drawing process. The filter can for example be pressed into the open end of the hat-shaped sleeve.

In a further advantageous embodiment of the storage chamber valve according to the invention, the housing can be completed in the region of a second edge of a storage cover on which a storage spring of the accumulator piston is supported.

In a further advantageous embodiment of the storage chamber valve according to the invention, the at least one spring element can be guided in a receiving opening in the accumulator piston and the opening element can be moved substantially axially in the direction of the closing element. Alternatively, the at least one spring element can be fastened to the valve body and have at least one extension, which is stretched further than the opening element in the direction of the storage piston. About this tail, the at least one spring element can be biased in an advantageous manner from the accumulator piston before the memory piston actuates the opening element.

In a further advantageous embodiment of the storage chamber valve according to the invention, the housing designed as a sleeve can be at least partially assembled in a receiving bore or on a fluid block.

Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. In the drawings, like reference numerals designate components that perform the same or analog functions.

Brief description of the drawings

1 shows a schematic sectional view of a first embodiment of a storage chamber valve according to the invention.

2 shows a schematic representation of a filter for the storage chamber valve according to the invention 1 ,

3 shows a schematic detail 1 for adjustability of the additional opening force for the storage chamber valve according to the invention 1 ,

4 to 6 each show a snapshot of the closing element and the opening element during the opening movement of the storage chamber valve according to the invention 1 ,

7 shows a representation of an alternative embodiment of the closing element and the opening element for a storage chamber valve according to the invention.

8th shows a schematic sectional view of a second embodiment of a storage chamber valve according to the invention.

Embodiments of the invention

How out 1 to 8th can be seen, the illustrated embodiments include a storage chamber valve according to the invention 1 . 1B one storage chamber each 5 , one in the storage chamber 5 movably guided accumulator piston 10 and one in a valve body 40 . 40A arranged execution 46 . 46A over which the storage chamber 5 with a first fluid connection 6.1 connected is. A closing element 20 . 20A seals in a closed position one at the edge of the implementation 46 . 46A arranged valve seat 44 . 44A from, with an opening device 60 . 60A . 60B the implementation 46 . 46A engages and from the accumulator piston 10 . 10B is movable, which at the opening device 60 . 60A . 60B generates an actuating force F1. A stroke of the accumulator piston 10 . 10B effected via the opening device 60 . 60A . 60B an opening stroke of the closing element 20 . 20A , According to the invention is a common as a sleeve executed housing 30 provided, which at least the valve body 40 . 40A , the closing element 20 . 20A and the storage chamber 5 with the accumulator piston 10 . 10B surrounds.

How out 1 to 8th can be seen further, takes the common designed as a sleeve housing 30 the valve body 40 . 40A on, which axially displaceable in the region of a first edge in the housing 30 is included and the case 30 at the first edge. This allows a position of the valve body 40 . 40A within the housing designed as a sleeve 30 can be specified and set. When reaching a desired position on the housing 30 can the valve body 40 . 40A For example, by laser welding fluid-tight to the housing 30 be fixed. By this displacement of the valve body 40 . 40A may be a closing point of the corresponding closing element 20 . 20A or sealing element with respect to a position of the accumulator piston 10 . 10B , a force of a memory spring 16 and a force of a spring element 64 . 64B the opening device 60 . 60A . 60B be set. In the illustrated embodiments, the valve body 40 . 40A as a hat-shaped sleeve with implementation 46 . 46A executed, in which the closing element 20 . 20A is guided and whose open end with a filter 50 is covered. The filter 50 is as a flat filter with a frame 52 and several bars 54 executed, which is a filter grid 56 wear. The filter 50 filters the operating medium arriving from a master cylinder. The filter 50 is about the frame, for example 52 in the open of designed as a hat-shaped sleeve valve body 40 . 40A pressed.

How out 1 to 8th can be further seen, is the closing element 20 . 20A a sealing contour 22 . 22A and a guide hole 24 . 24A on. Inside the guide hole 24 . 24A is a leadership contour 26 . 26A formed, which with a support 63 . 63A . 63B of the opening element 62 . 62A . 62B corresponds. The closing element 20 . 20A is tiltable around a pivot 28 at the valve seat 44 . 44A guided. This dissolves the edition 63 . 63A . 63B of the opening element 62 . 62A . 62B over the inner guide contour 26 . 26A of the closing element 20 . 20A a corresponding tilting moment about the fulcrum 28 out. The special form of the closing element 20 . 20A advantageously allows a simplification of the opening movement of the storage chamber valve 1 . 1B which is described below with reference to 4 to 6 is described. The opening element 62 . 62A . 62B for the closing element 20 . 20A or sealing element is by the spring element 64 . 64A essentially loaded axially.

The storage piston 10 . 10B is with a seal 14 . 14B Mistake. In addition, on the storage piston 10 . 10B not shown guide rings for improved guidance in the housing designed as a sleeve 30 be provided. On a "dry" side of the accumulator piston 10 . 10B the memory spring acts 16 , which are attached to a storage lid 18 supported, which in the region of a second edge in the housing designed as a sleeve 30 is attached. The storage piston 10 . 10B goes with relaxing memory spring 16 against a stop 32 , which in the illustrated embodiments in the case designed as a sleeve 30 is formed. Alternatively, the stop can be formed by one or more additional components. The storage piston 10 . 10B beats already at the stop 32 on, when the closing element 20 . 20A or sealing element of the storage chamber valve 1 straight from the valve seat 44 . 44A or sealing seat in the valve body 40 . 40A has lifted off and the storage chamber valve 1 . 1B is open. That means the storage piston 10 . 10B at a rather high pressure difference strikes, but even before the closing element 20 . 20A or sealing element has reached its maximum opening stroke. The remaining opening stroke, ie at rather low pressure differences, is caused by the spring element 64 . 64B the opening device 60 . 60A . 60B generated. This opening function serves to reduce the Pedalwegverlängerung, because during a closing movement of the closing element 20 . 20A or sealing element by a set by the driver master cylinder pressure of the accumulator piston 10 . 10B , with the compared to the closing element 20 . 20A relatively large area, only shortly before the closed position of the storage chamber valve 1 . 1B is moved. During a closing process is the closing element 20 . 20A over the predetermined additional partial stroke h1, h2, h3 against the force of the at least one spring element 64 . 64B movable substantially without change in volume from an open position in the closed position, wherein the additional partial stroke h1, h2, h3 of the adjustable distance of the opening element 62 . 62A . 62B to the accumulator piston 10 . 10B is dependent in the open position. The volume intake and the pedal travel extension are correspondingly low.

How out 1 to 7 it can be seen further, the opening element 62 . 62A in a first embodiment of the storage chamber valve according to the invention 1 axially movable in a receptacle 12 of the accumulator piston 10 added. In the radial direction are guide or degrees of freedom of the opening element 62 . 62A predetermined so that on the one hand the closing element 20 . 20A or sealing element as well as possible and accurate at the correct location in the region of a guide opening 24 . 24A is taken and on the other hand, the opening movement can be performed well.

To this relatively precise tuning of the effect of the two pressure springs involved 16 . 64 to reach, the distances h1, h2 above and below one on the opening element 62 arranged Abstützstegs 66 coordinated. Both distances h1, h2 are, for example, in the order of magnitude of the stroke of the closing element 20 . 20A or sealing element. After adjusting the lifting and spring force ratios of the opening element 62 in the storage piston 10 becomes a support disk 13 on the accumulator piston 10 fixed for example by laser welding. Alternatively, the support disk 13 by other suitable connection methods, such as caulking on the accumulator piston 10 or in the recording 12 be fixed.

The following will be with reference to 4 to 6 the movements of the closing element 20 . 20A or sealing element and the opening element 62 . 62A during the opening movement of the storage chamber valve according to the invention 1 . 1B described.

How out 4 it can be seen, the opening element emerges 62 with the edition 63 in the guide hole 24 of the closing element 20 almost centrally, wherein the action lines of the opening force (operating force) F1 and a closing force F2 (fluid force) are very close to each other or identical. How out 5 can be seen further, the edition slides 63 of the opening element 62 in a further stroke movement of the opening element 62 along a guide slope 26 along the guided contour. This results in a distance of the two power lines F1, F2, so that a torque is generated, which is the closing element 20 or sealing element from the valve seat 44 around the fulcrum 28 circulated. How out 6 can be further seen, lifts the closing element 20 or sealing element in a further stroke movement of the opening element 62 and / or a pressure equalization above or below the closing element 20 or sealing element from the valve seat 44 and releases a correspondingly larger flow cross-section. The described rolling movement of the closing element 20 or sealing element can be regarded as favorable in terms of power requirement for opening at the moment of opening. Alternatively, the closing element 20 or sealing element in the rolling movement in addition to the wall of the valve body designed as a hat-shaped sleeve 40 support.

How out 7 can be seen, the power transmission to trigger the tilting movement via a guide cone 26A executed inner guide contour can be realized. This dips the opening element 62A with the edition 63A in the guide hole 24A of the closing element 20A eccentric one, with the support 63A of the opening element 62A in a further stroke movement of the opening element 62A along the as a guide cone 26A running guide contour towards the center slides up to the closing element 20A or sealing element in a further stroke movement of the opening element 62A and / or a pressure equalization above or below the closing element 20A or sealing element from the valve seat 44A lifts and releases a correspondingly larger flow cross-section.

How out 8th it can be seen further, the opening device 60B in a second embodiment of the storage chamber valve according to the invention 1 not from the accumulator piston 10B added. In contrast to the first embodiment, the opening element 62B via an actuating element 67B and a fixture 65B on spatially fixed as a hat-shaped sleeve running valve body 40 attached. Alternatively, the opening element 62B on other parts of the storage chamber valve 1B for example, on the sleeve designed as a housing 30 be attached. Analogous to the first embodiment, the second embodiment of the storage chamber valve according to the invention is effective 1B also at least two different actuating forces, wherein the at least one spring element 64B through the stroke of the accumulator piston 10B is biased and during the opening process on the closing element 20 acting additional opening force generated. The at least one spring element 64B effected via the actuating element 67B and the opening element 62B a defined additional partial stroke in the opening direction of the closing element 20 when the accumulator piston 10B ) its defined upper stop 32 has reached.

How out 8th can be seen further, which has at least one spring element 64B at least one tail, which further than the actuating element 67B or the opening element 62B in the direction of actuating means 11B of the accumulator piston 10B stretched. In the illustrated embodiment sin the actuating means 11B of the accumulator piston 10B executed as a curvature, which is the at least one spring element 64B pretension and the actuator 67B or the opening element 62B emotional. Thus, the storage piston opens 10B the storage chamber valve 1B against high pressures with a small or limited Speicherolbenhub and the at least one spring element 64B moves the closing element 20 or sealing element against low pressures or with already open storage chamber valve 1B continue to the maximum open position. The at least one spring element 64B is designed so elastic that the actuator 67B the opening device 60B at high pressures or closing forces on the accumulator piston 10 applies and thus is no longer elastic. At low pressures or closing forces and if the storage piston 10 at the stop 32 is applied, the elastic acts at least one spring element 64B the opening device 60B again and moves the closing element 20 or sealing element to the additional opening stroke h3 further in the opening direction, so that the storage chamber valve 1B still open.

In the illustrated embodiments, the completed with the inner parts of the valve sleeve 30 in a receiving hole 4 a fluid block 2 or pump housing mounted and at two sealing points 7 . 8th sealed. At a first sealing point 7 between the first fluid port 6.1 for the master cylinder and a second fluid port 6.2 for a pump suction side is the housing designed as a sleeve 30 for example, by Dichteinpressen with the fluid block 2 connected. In the region of the second edge in the housing designed as a sleeve 30 is the case 30 at a second sealing point 8th for example with the fluid block 2 caulked. Alternatively, the case designed as a sleeve 30 of the storage chamber valve 1 . 1B not completely from the fluid block 2 or pump housing to be enclosed, but partially or completely outside of the fluid block 2 or pump housing lie. The case designed as a sleeve 30 then forms the outer storage enclosure. The sealing and fastening is then carried out accordingly.

As is ensured by guiding elements and / or flow conditions of the medium that the closing element 20 . 20A always back in the valve seat 44 . 44a passes, there securely seals and contact with the opening element 52 holds, no contact spring is provided in the illustrated embodiments, which is the closing element 20 . 20A always back in the valve seat 44 . 44A , In alternative embodiments, not shown, of the storage chamber valve according to the invention 1 . 1B In each case, such a soft, weakly biased closing acting contact spring can be provided, which on the closing element 20 . 20A or sealing element attacks.

The designed as a hat-shaped sleeve valve body 40 can be produced, for example, by machining or as a deep-drawn part. The case designed as a sleeve 30 Can also be made by machining or as a deep-drawn part. In addition, the sleeve designed as a housing 30 be constructed of several items with similar low radial deviations as the one-piece variant. The closing element 20 . 20A or sealing element can be produced by machining or as a plastic injection-molded part.

Embodiments of the storage chamber valve according to the invention can be used, for example, as hydraulically controlled storage chamber valves in a hydraulic brake system of a motor vehicle.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 7543896 B2 [0005]
• DE 4202388 A1 [0006]

Claims (10)

Storage chamber valve with a storage chamber ( 5 ) and one in the storage chamber ( 5 ) movably guided accumulator piston ( 10 . 10B ) and one in a valve body ( 40 . 40A ) ( 46 . 46A ) over which the storage chamber ( 5 ) with a first fluid connection ( 6.1 ), wherein a closing element ( 20 . 20A ) in a closed position one at the edge of the implementation ( 46 . 46A ) arranged valve seat ( 44 . 44A ), wherein an opening device ( 60 . 60A . 60B ) the implementation ( 46 . 46A ) and from the storage piston ( 10 . 10B ) is movable, which at the opening device ( 60 . 60A . 60B ) generates an actuating force (F1), wherein a stroke of the accumulator piston ( 10 . 10B ) via the opening device ( 60 . 60A . 60B ) an opening stroke of the closing element ( 20 . 20A ), characterized by a common housing designed as a sleeve ( 30 ), which at least the valve body ( 40 . 40A ), the closing element ( 20 . 20A ) and the storage chamber ( 5 ) with the accumulator piston ( 10 . 10B ) surrounds. Storage chamber valve according to claim 1, characterized in that at least one spring element ( 64 . 64B ) by the stroke of the accumulator piston ( 10 . 10B ) is biased and during the opening operation on the closing element ( 20 . 20A ) generates additional opening force, wherein the at least one spring element ( 64 . 64B ) via the opening element ( 62 . 62A . 62B ) a defined additional partial stroke in the opening direction of the closing element ( 20 . 20A ) causes, when the accumulator piston ( 10 . 10B ) its defined upper stop ( 32 ) has reached. Storage chamber valve according to claim 2, characterized in that during a closing operation, the closing element ( 20 . 20A ) over the predetermined additional partial stroke against the force of the at least one spring element ( 64 . 64B ) is movable substantially without change in volume from an open position in the closed position, wherein the additional partial stroke of the adjustable distance of the opening element ( 62 . 62A . 62B ) to the accumulator piston ( 10 . 10B ) in the open position is dependent. Storage chamber valve according to one of claims 1 to 3, characterized in that the closing element ( 20 . 20A ) on the valve seat ( 44 . 44A ) is guided tiltably, wherein the closing element ( 20 . 20A ) a guide contour ( 26 . 26A ), on which a support ( 63 . 63A . 63B ) of the opening element ( 62 . 62A . 62B ) triggers a corresponding tilting moment. Storage chamber valve according to one of claims 1 to 4, characterized in that the valve body ( 40 . 40A ) axially displaceable in the region of a first edge in the housing ( 30 ), wherein the valve body ( 40 . 40A ) at a predetermined position on the housing ( 30 ) is fixed fluid-tight and the housing ( 30 ) at the first edge. Storage chamber valve according to claim 5, characterized in that the valve body ( 40 . 40A ) as a hat-shaped sleeve with passage ( 46 . 46A ) is executed, in which the closing element ( 20 . 20A ) and its open end with a filter ( 50 ) is covered. Storage chamber valve according to one of claims 1 to 6, characterized in that the housing ( 30 ) in the region of a second edge of a storage lid ( 18 ) is completed, on which a memory spring ( 16 ) of the accumulator piston ( 10 . 10B ) is supported. Storage chamber valve according to one of claims 2 to 7, characterized in that the at least one spring element ( 64 ) in a receiving opening ( 12 ) in the accumulator piston ( 10 ) is guided and the opening element ( 62 62A ) substantially axially in the direction of the closing element ( 20 . 20A ) emotional. Storage chamber valve according to one of claims 2 to 7, characterized in that the at least one spring element ( 64B ) on the valve body ( 40 ) and has at least one extension, which is wider than the opening element ( 62B ) in the direction of storage piston ( 10B ) is stretched. Storage chamber valve according to one of claims 1 to 9, characterized in that the housing designed as a sleeve ( 30 ) at least partially in a receiving bore ( 4 ) or is permanently mountable on a fluid block.

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