Housing for a piston cylinder device, piston cylinder device for a vehicle brake system, and method for manufacturing a piston cylinder device.

Abstract

The present invention relates to a housing (14) for a piston cylinder device of a vehicle brake system, wherein at least one pressure regulating groove (46) structured on at least one inner surface of the housing (14) is provided, and the pressure regulating groove (46) extends from at least the prechamber (10) to at least the first chamber (12), respectively. At this time, during the position adjustment movement of the first piston component (16) directed towards the first chamber (12) in a direction away from the prechamber (10), at least one gaseous and / or liquid medium present in the first chamber (12) can move from the first chamber (12) into the prechamber (10) through at least one of the pressure regulating grooves (46). Similarly, the present invention relates to a piston cylinder device for a vehicle brake system, which piston cylinder device has at least one pressure regulating path (40), and this pressure regulating path (40) is in contact with and / or configured inside the piston cylinder device. At this time, during the position adjustment movement of the first piston component (16), at least one medium can move from the first chamber (12) into the prechamber (10) through at least one pressure regulating path (40).

Description

Technical Field

[0001] The present invention relates to a housing for a piston cylinder device of a vehicle brake system and a piston cylinder device for a vehicle brake system. The present invention also relates to a method for manufacturing a housing for a piston cylinder device of a vehicle brake system and a method for manufacturing a piston cylinder device for a vehicle brake system.

Background Art

[0002] Patent Document 1 discloses a piston cylinder device for a vehicle brake system. In this piston cylinder device, a valve body is disposed so as to be positionally adjustable between a pre-chamber of the piston cylinder device and another chamber of the piston cylinder device. Thereby, the valve body is positionally adjustable so as to separate from the pre-chamber and at least partially enter the other chamber by using the motor force of an electric motor transmitted to the valve body via a spindle transmission device. By using this positionally adjusted valve body, the motor force can be transmitted to the primary piston through mechanical contact between at least one force transmission component contacting the valve body and the primary piston of the master brake cylinder.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] The present invention provides a housing for a piston cylinder device of a vehicle brake system having the features of claim 1, a piston cylinder device for a vehicle brake system having the features of claim 5, a method for manufacturing a housing for a piston cylinder device of a vehicle brake system having the features of claim 7, and a method for manufacturing a piston cylinder device for a vehicle brake system having the features of claim 10.

Advantages of the Invention

[0005] The present invention provides a housing and piston cylinder device for a piston cylinder device that enables pressure adjustment between the first chamber and the pre-combustion chamber even in rapid repositioning movements of a first piston component directed toward the first chamber in a direction away from the pre-combustion chamber, based on at least one pressure adjustment groove or at least one pressure adjustment path thereof. This ensures that an undesirable negative pressure in the pre-combustion chamber acting against the desired rapid repositioning movement of the first piston component directed toward the first chamber away from the pre-combustion chamber is prevented. This contributes to enhancing the effectiveness of each piston cylinder device during braking of a vehicle equipped with such a piston cylinder device. Therefore, the present invention described herein improves driving comfort and the safety standards of vehicles utilizing the present invention. As described in more detail below, the present invention also reduces the risk of air entering the brake circuit hydraulically connected to each piston cylinder device, the risk of dirt being drawn into the vehicle brake system equipped with each piston cylinder device, the risk of damage to the seal element of each piston cylinder device, the risk of damage to the pressure regulating element of each piston cylinder device, and the risk of damage to the microcontroller and / or the seal of the microcontroller of each piston cylinder device.

[0006] According to a preferred embodiment of the housing for a piston cylinder device, at least one pressure regulating groove is structured on at least one inner surface of the housing using an extrusion process. Thus, at least one pressure regulating groove can be incorporated into the housing "directly" / during housing manufacturing, with (almost) no additional cost in relation to the housing manufacturing work. Therefore, forming at least one pressure regulating groove in the housing does not increase its manufacturing cost at all / hardly at all.

[0007] In a preferred development, the first piston component may have at least one guide portion, each protruding into at least one guide groove, each starting from at least a pre-combustion chamber and extending to at least a first chamber, which is structured on at least one inner surface of the housing, and at least one pressure regulating groove, each tapering off of at least one guide groove, is structured on at least one inner surface of the housing. This allows the formation of at least one pressure regulating groove to be carried out in a common work step together with the formation of at least one guide groove, so the additional cost to be incurred for forming at least one pressure regulating groove can be ignored.

[0008] The housing according to the present invention may be, for example, a master brake cylinder housing, or a housing for an electrically operated brake pressure generator that can be incorporated into or is incorporated within a hydraulic device of a vehicle brake system. Therefore, the present invention described herein can be used in a variety of ways. However, it should be noted that the applicability for the housing described herein should be interpreted as illustrative only.

[0009] In a preferred embodiment of the piston cylinder device according to the present invention, the piston cylinder device is either a master brake cylinder or an electrically operated brake pressure generator that can be incorporated into or is incorporated within a hydraulic device of a vehicle brake system. Therefore, a piston cylinder device according to the present invention having at least one pressure adjustment path instead of at least one pressure adjustment groove may also be used in a variety of applications. However, even in this case, the applicability of the piston cylinder device described herein should be interpreted as illustrative only.

[0010] The aforementioned advantages are also guaranteed when a corresponding manufacturing method for a housing for a piston cylinder device of a vehicle brake system or a manufacturing method for a piston cylinder device of a vehicle brake system is implemented. It should be made clear that the manufacturing methods described herein may also be further developed and formed in accordance with the above embodiments of the housing or piston cylinder device. [Brief explanation of the drawing]

[0011] [Figure 1a] These are schematic overall and partial diagrams of a piston cylinder device or its housing according to one embodiment. [Figure 1b] These are schematic overall and partial diagrams of a piston cylinder device or its housing according to one embodiment. [Figure 1c] These are schematic overall and partial diagrams of a piston cylinder device or its housing according to one embodiment. [Figure 1d] These are schematic overall and partial diagrams of a piston cylinder device or its housing according to one embodiment. [Figure 1e] These are schematic overall and partial diagrams of a piston cylinder device or its housing according to one embodiment. [Figure 1f] These are schematic overall and partial diagrams of a piston cylinder device or its housing according to one embodiment. [Figure 2] This is a flowchart illustrating one embodiment of a manufacturing method for a housing for a piston cylinder device of a vehicle brake system. [Figure 3] This is a flowchart illustrating one embodiment of a manufacturing method for a piston cylinder device for a vehicle brake system. [Modes for carrying out the invention]

[0012] Other features and advantages of the present invention will be described below with reference to the drawings.

[0013] Figures 1a to 1f show schematic overall and partial views of one embodiment of a piston cylinder device or its housing.

[0014] The piston cylinder devices schematically shown in Figures 1a to 1f may be used in vehicle brake systems. It should be clearly stated that the applicability of the piston cylinder devices described below is not limited to specific types of vehicle brake systems. Vehicles / automobiles equipped with this vehicle brake system are not limited to any particular vehicle / automobile type.

[0015] The piston cylinder device has at least one pre-combustion chamber 10 formed in contact with and / or inside the piston cylinder device, and a first chamber 12 formed within the piston cylinder device. Preferably, the pre-combustion chamber 10 is formed in contact with and / or inside the housing 14 of the piston cylinder device, and the first chamber 12 is formed within the housing 14. Additionally, the piston cylinder device has a first piston component 16, which is positioned between the pre-combustion chamber 10 and the first chamber 12 such that the first chamber 12 is located on a first side of the first piston component 16, and the pre-combustion chamber 10 is located on a second side of the first piston component 16, oriented away from the first side. Furthermore, the first piston component 16 is positioned within the piston cylinder device so as to be movable toward the first chamber 12 by a positional adjustment movement in a direction away from the pre-combustion chamber 10, and in this case, the volume of the first chamber 12 can be reduced by the positional adjustment movement of the first piston component 16. Furthermore, the direction toward the first chamber 12 from the pre-combustion chamber 10 is called the braking direction 18 of the first piston component 16.

[0016] The first piston component 16 is supported, for example, by a first return spring 20 located in the first chamber 12, such that the resetting force of the first return spring 20 acts against the braking direction 18 of the first piston component 16, and a preferred possibility for initiating a position adjustment movement of the first piston component 16 directed in the braking direction 18 is described in detail below.

[0017] Furthermore, as can be seen from Figure 1a, the piston cylinder device includes, in addition to the first piston component 16, a second piston component 22 and optionally a third piston component 24. The second piston component 22 is positioned to be adjustable between the first chamber 12 and the second chamber 26. Accordingly, if the piston cylinder device is provided with a third piston component 24, the third piston component 24 may be positioned to be adjustable between the second chamber 26 and the third chamber 28. The second piston component 22 may be a rod-type piston 22 in particular, while the third piston component 24 can be configured as a floating piston 24. The rod-type piston 22 may be supported by the floating piston 24 using a second return spring 30, or, if the piston cylinder device does not have a floating piston 24, it may be supported by the inner wall of the housing 14. If a floating piston is provided, the floating piston 24 may be supported by the inner wall of the housing 14 using a third return spring 32.

[0018] As can be seen from FIG. 1b, the first piston component 16 moved in the braking direction 18 by the positioning movement can be brought into mechanical contact with the second piston component 22, whereby at least one force for initiating the positioning movement of the first piston component 16 can be transmitted to the second piston component 22 via the mechanical contact between the first piston component 16 and the second piston component 22. Optionally, at least one compact force transmission component arranged between the first piston component 16 and the second piston component 22 is also positionable / positioned together with the first piston component 16 moved in its braking direction 18 by the positioning movement, wherein at least one force for initiating the positioning movement of the first piston component 16 can be transmitted to the second piston component 22 via the mechanical contact between the first piston component 16, at least one force transmission component, and the second piston component 22. It is expressly pointed out that at least one compact force transmission component should not be understood as a liquid material and a gaseous material. Thus, the force transmission between the first piston component 16 and the second piston component 22 does not take place (substantially) via a pressure increase.

[0019] For example, the first piston component 16 has a sliding plate 16a to which the spindle 16b is fixed in the illustrated embodiment (see Figure 1b). However, the configuration possibilities of the first piston component 16 are not limited to components 16a and 16b. In particular, in the illustrated embodiment, the spindle 16b of the first piston component 16 meshes with and is interlocked with a spindle nut 34, which converts the rotational motion of the electric motor 36 into a translational positional motion of the first piston component 16. For this purpose, the spindle nut 34 is held in place within the housing 14 of the piston cylinder device using a bearing 38, for example, a ball bearing 38 in particular. The spindle nut 34 and bearing 38 are typical examples of components for a piston cylinder device that, in particular during the relatively rapid positional movement of the first piston component 16 in the braking direction 18, block the movement of gaseous and / or liquid media present in the first chamber 12 from the first chamber 12 to the pre-combustion chamber 10, thereby conventionally delaying or preventing the desired pressure adjustment between the pre-combustion chamber 10 and the first chamber 12. This conventionally, during the operation of the device according to the prior art, an undesirable negative pressure often occurs in the pre-combustion chamber 10, thereby generating a counter-pressure that resists the desired rapid positional movement of the first piston component 16 in the braking direction 18.

[0020] To eliminate the drawbacks of the conventional devices described above, the piston cylinder device described herein has at least one pressure regulation path 40 (see Figures 1c to 1f), which is configured adjacent to and / or inside the piston cylinder device so that, during the repositioning movement of the first piston component 16 directed in the braking direction 18, at least one gaseous and / or liquid medium in the first chamber 12 can move from the first chamber 12 to the pre-combustion chamber 10 through at least one pressure regulation circuit 40. As a result, the at least one pressure regulation path 40 prevents undesirable compression of the gaseous and / or liquid medium present in the first chamber 12, and at the same time prevents undesirable negative pressure in the pre-combustion chamber 10, even during the relatively rapid repositioning movement of the first piston component 16 in the braking direction 18. Even when grease is present in the first piston component 16, at least one pressure regulation path 40 ensures that at least one medium conveniently moves from the first chamber 12 to the pre-combustion chamber 10 during the rapid repositioning movement of the first piston component 16 in the braking direction 18. Thus, the required relatively rapid repositioning movement of the first piston component 16 in the braking direction 18 is not obstructed at all / almost by the opposing pressure, so the piston cylinder device described herein can also produce high dynamic braking of a vehicle / automobile equipped with its respective vehicle brake system, based on at least one pressure regulation path 40 of the piston cylinder device. In this way, at least one pressure regulation path 40 provided in contact with and / or inside the piston cylinder device improves the efficiency of the piston cylinder device, which contributes to improved driving comfort and safety standards of a vehicle / automobile equipped with this piston cylinder device.

[0021] At least one pressure regulating path 40 is preferably a valveless pressure regulating path 40. This eliminates the need to "activate" at least one pressure regulating path 40 to suitably initiate the movement of at least one medium from the first chamber 12 to the pre-combustion chamber 10.

[0022] Furthermore, a configuration in which at least one pressure adjustment path 40 is provided in contact with and / or inside the piston cylinder device enables careful operation with less wear of the piston cylinder device. At least one pressure adjustment path 40 prevents inconvenient compression of at least one medium present in the first chamber 12, particularly during a relatively rapid positioning movement of the first piston component 16 in the braking direction 18. Thus, the conventional risk of a pressure load being applied to at least one seal 42 that guides the second piston component 22 is also significantly reduced by at least one pressure adjustment path 40. Thereby, the seal lip of at least one seal 42 is handled more appropriately and carefully during the operation of the piston cylinder device. This also reduces the conventional risk of air intrusion into at least one hydraulic brake circuit (not shown) connected to the piston cylinder device. At least one housing seal 44 of the housing 14 of the piston cylinder device is also better protected against damage based on the reduced (almost zero frequency) occurrence frequency of pressure peaks during the operation of the piston cylinder device using at least one pressure adjustment path 40. Similarly, another component of the piston cylinder device or a vehicle brake system cooperating with this piston cylinder device, such as a microcontroller (ECU, electronic control unit), particularly at least one seal and / or a pressure adjustment element (DAE) of the microcontroller, is better protected against damage caused by pressure loads by the configuration of at least one pressure adjustment path 40. At least one pressure adjustment path 40 also has the effect of resisting the inconvenient suction of moisture into the piston cylinder device from its surroundings.

[0023] As can be seen in Figures 1c to 1f, at least one pressure regulating path 40 may be structured in particular as at least one pressure regulating groove 46 on at least one inner surface 48 of the housing 14. The at least one inner surface 48 of the housing 14 may be interpreted as a surface on which the first piston component 16 can be positioned or positioned in a positionally adjustable manner, in particular, so that the first piston component 16 slides along the at least one inner surface 48 during its positional adjustment movement in the braking direction 18. The at least one pressure regulating groove 46 is configured such that each of the at least one pressure regulating groove 46 starts at least from the pre-combustion chamber 10 and extends to at least the first chamber 12, thereby ensuring that at least one medium present in the first chamber 12 is movable / moved from the first chamber 12 through the at least one pressure regulating groove 46 into the pre-combustion chamber 10 during the positional adjustment movement of the first piston component 16 directed in the braking direction 18. As can be seen by comparing Figures 1b and 1c, in this case, neither the spindle nut 34 nor the bearing 38 or any present grease acts against the required movement of at least one gaseous and / or liquid medium. As shown by arrows 50 and dashed line 52 in Figure 1f, at least one medium present in the first chamber 12, such as air, can leak out of the first chamber 12 into the pre-combustion chamber 10 via at least one pressure regulating groove 46 during the repositioning movement of the first piston component 16 in the braking direction 18. This prevents undesirable negative pressure in the pre-combustion chamber 10 or undesirable compression of the medium in the first chamber 12. Thus, at least one pressure regulating groove 46 allows for sufficiently early negative pressure correction even during relatively rapid repositioning movements of the first piston component 16 in the braking direction 18.

[0024] The at least one pressure regulating groove 46 structured on at least one inner surface 48 of the housing 14 provides an inexpensive possibility for achieving negative pressure compensation, particularly over the entire length of the housing. As can be seen from Figures 1a to 1f, the basic functionality of the piston cylinder device is not altered by the configuration of the at least one pressure regulating groove 46 for negative pressure compensation. Thus, the at least one pressure regulating groove 46 acts to increase the efficiency of the piston cylinder device without impairing the function of the piston cylinder device.

[0025] In a preferred form, at least one pressure regulating groove 46 is structured by an extrusion process on at least one inner surface 48 of the housing 14. This allows for an inexpensive configuration of at least one pressure regulating groove 46 in the housing 14, which is incorporated into the manufacture of the housing 14. As can be seen in Figures 1a and 1b, at least one pressure regulating groove 46 may also be formed in housing portion 14a, which, together with at least one other housing portion 14b, constitutes the housing 14 of the piston cylinder device. The housing 14 or housing portion 14a may be manufactured in its basic form (inner and outer shape) by, for example, an aluminum rod compression molding method. Then, at least one pressure regulating groove 46 may be structured by an extrusion process on at least one inner surface 48 of the housing 14 / housing portion 14a, thereby mounting at least one pressure regulating groove directly to the housing cross-section of the housing 14 / housing portion 14a. It is not necessary to provide additional housing components in the housing 14 to realize at least one pressure regulating groove 46. Therefore, no additional manufacturing step or component is required to later form at least one pressure regulating groove 46 in the piston cylinder device.

[0026] Since no other components are required to constitute at least one pressure regulating groove 46, the configuration of at least one pressure regulating groove 46 does not increase the component diversity of the piston cylinder device or increase assembly costs. However, the configuration of at least one pressure regulating groove 46 helps to increase the mounting density of the piston cylinder device and ensure the competitiveness of this piston cylinder device.

[0027] Furthermore, the configuration of at least one pressure adjustment groove 46 in the housing 14 may be done together with / simultaneously with the configuration of at least one guide groove 54 for guiding at least one guide portion 56 of the first piston component 16. To prevent undesirable rotational movement of the first piston component 16 even during rapid positional adjustment movements of the first piston component 16, the first piston component 16 often has at least one guide portion 56. The at least one guide portion 56 of the first piston component 16 may be configured in particular as a sliding portion 56. The at least one guide portion 56 of the first piston component 16 and at least one guide groove 54 cooperating with this guide portion 56 may be called a rotation prevention means for the first piston component 16. Guiding of the first piston component 16 is usually done via at least one guide groove 54, into which at least one guide portion 56 each protrudes. At least one guide groove 54 may be structured on at least one inner surface 48 of the housing 14 such that it each starts from at least the pre-combustion chamber 10 and extends to at least the first chamber 12. In this case, configuring at least one guide groove 54 and at least one pressure regulating groove 46 together / simultaneously is possible in an inexpensive way by having at least one pressure regulating groove 46 structured on at least one inner surface 48 of the housing 14 as a tapered portion of at least one guide groove 54. Configuring at least one pressure regulating groove 46 as a tapered portion of at least one guide groove 54 may be interpreted as having at least one pressure regulating groove 46 structured on the side of each adjacent guide groove 54, oriented away from the first piston component 16, such that the first groove width b1 of each pressure regulating groove 46 is smaller than the second groove width b2 of the adjacent guide groove 54 (see Figure 1d).

[0028] However, it should be noted that the configuration of the at least one pressure regulating path 40, each as at least one pressure regulating groove 46, is merely arbitrary. The advantages are also guaranteed, for example, if the at least one pressure regulating path 40 extends through at least one other component of the piston cylinder device, such as the housing 14. The at least one pressure regulating path 40 extending through at least one other component of the piston cylinder device, such as the housing 14, also enables effective pressure regulation and can usually be implemented inexpensively during the manufacture of the piston cylinder device. For example, the at least one pressure regulating path 40 may be interpreted as at least one pressure regulating path extending through the first piston component 16. Such a form of pressure regulating path 40 also contributes favorably to rapid pressure regulation between the first chamber 12 and the pre-combustion chamber 10 of the piston cylinder device, particularly during the dynamic operation of the piston cylinder device.

[0029] In the embodiments shown in Figures 1a to 1f, the piston cylinder device is, for example, a master brake cylinder, particularly a master brake cylinder for a brake-by-wire brake system. Therefore, the housing 14 of the piston cylinder device may be called the master brake cylinder housing. However, it should be made clear that the configuration of the master brake cylinder, particularly for a brake-by-wire brake system, schematically shown in Figure 1a, should be interpreted as an example only. Furthermore, the configuration of the first piston component 16 with the spindle 16b, the conversion of the rotational motion of the electric motor 36 into translational positional motion of the first piston component 16 by the spindle nut 34, and the connection between the electric motor 36 and the spindle nut 34 via the worm shaft 58 schematically shown in Figure 1a should also be interpreted as an example only.

[0030] In an optional embodiment, the first piston component 16 may be a boost body of an electromechanical / electric brake booster in the piston cylinder device, which is pre-connected to a brake operating element, for example, the master brake cylinder of the piston cylinder device to which the brake pedal is connected. Similarly, the first piston component 16 may be interpreted as a driver braking force transmission component, which can only transmit the driver braking force applied to the brake operating element / brake pedal, but not the motor force of an electric motor. Thus, the piston cylinder device may be a master brake cylinder "without a brake booster".

[0031] Selectively, the piston cylinder device may be an electrically operated brake pressure generator that can be incorporated into or is incorporated within the hydraulic system of the vehicle brake system. In this case, the housing of the piston cylinder device may be referred to as the housing 14 of the electrically operated brake pressure generator that can be incorporated into or is incorporated within the hydraulic system of the vehicle brake system. Thus, at least one force that initiates the positional movement of the first piston component 16 in the braking direction 18 may be the motor force of the electric motor 36 of the piston cylinder device and / or the driver braking force applied to the brake operating element / brake pedal.

[0032] Figure 2 shows a flowchart illustrating one embodiment of a manufacturing method for a housing for a piston cylinder device of a vehicle brake system.

[0033] The housing 14 or housing portion 14a of the piston cylinder device described below can be manufactured, for example, using the manufacturing method described below. However, the feasibility of this manufacturing method is not limited thereto.

[0034] In method step S1, a pre-combustion chamber is configured (later) in contact with and / or inside the housing. Furthermore, in method step S2, a first chamber is formed (later) inside the housing. Method steps S1 and S2 may be performed in any order, overlapping in time, or simultaneously. In this case, the pre-combustion chamber and the first chamber are positioned relative to each other such that the first piston component can be repositionably placed in contact with and / or inside the housing, with the first chamber located on the first side of the first piston component and the pre-combustion chamber formed on the second side of the first piston component, oriented away from the first side. Furthermore, when performing method steps S1 and S2, the repositionability of the first piston component is ensured so that the volume of the first chamber can be reduced / reduced by the repositioning movement of the first piston component oriented toward the first chamber in a direction away from the pre-combustion chamber. Furthermore, at least one second piston component can also be positioned within the housing in an adjustable manner, wherein at least one force that initiates an adjustable movement toward the first chamber in a direction away from the pre-combustion chamber can be transmitted to the second piston component via mechanical contact between the first piston component and the second piston component, or via mechanical contact between the first piston component and the second piston component, and at least one compact force transmission component positioned between the first and second piston components.

[0035] The manufacturing method described herein also includes method step S3, in which at least one pressure regulating groove is structured on at least one inner surface of the housing, each starting from at least a pre-combustion chamber and extending at least to a first chamber, so that at least one gaseous and / or liquid medium present in the first chamber can move from the first chamber through at least one pressure regulating groove into the pre-combustion chamber during the repositioning movement of the first piston component oriented toward the first chamber in a direction away from the pre-combustion chamber. The at least one pressure regulating groove may be structured on at least one inner surface of the housing, particularly by an extrusion process, and thus method step S3 may be carried out in a preferred form simultaneously with method steps S1 and S2. In a preferred form, in method step S3, at least one guide groove is also structured on at least one inner surface of the housing for at least one guide portion of the first piston component, each starting from at least a pre-combustion chamber and extending at least to a first chamber. This is done after positioning the first piston component such that at least one guide portion of the first piston component each protrudes into at least one guide groove. In this case, at least one pressure regulating groove is preferably structured on at least one inner surface of the housing as a tapered portion of at least one guide groove.

[0036] Figure 3 shows a flowchart illustrating one embodiment of a manufacturing method for a piston cylinder device for a vehicle brake system.

[0037] The manufacturing method described herein is preferably suitable for producing the piston cylinder device described above, but is not limited to this configuration.

[0038] In method step S10, the pre-combustion chamber is configured adjacent to and / or inside the piston cylinder device. Additionally, in method step S11, a first chamber is formed inside the piston cylinder device. Then, as method step S12, the first piston component is positioned adjustable adjacent to and / or inside the piston cylinder device, with the first chamber located on the first side of the first piston component and the pre-combustion chamber located on the second side of the first piston component, oriented away from this first side, wherein the volume of the first chamber is reduced by the adjustment movement of the first piston component, which is oriented toward the first chamber away from the pre-combustion chamber. Furthermore, in method step S13, at least one second piston component is positioned in a position-adjustable manner within the piston cylinder device, at which time at least one force is transmitted to the second piston component via mechanical contact between the first piston component and the second piston component, or via mechanical contact between the first piston component and the second piston component, and at least one compact force transmission component positioned between the first piston component and the second piston component.

[0039] This manufacturing method further comprises a method step S14, in which at least one pressure regulating path is configured adjacent to and / or inside the piston cylinder device, thereby causing at least one gaseous and / or liquid medium present in the first chamber to move from the first chamber through the at least one pressure regulating path to the pre-combustion chamber during the positional adjustment movement of the first piston component, which is directed toward the first chamber in a direction away from the pre-combustion chamber. Thus, a piston cylinder device manufactured using the manufacturing method described herein satisfies the aforementioned advantages already described. Method steps S10 to S14 may be carried out in any order and may, in some cases, overlap in time. [Explanation of Symbols]

[0040] 10 Pre-combustion chamber 12. The first room 14 Housing 14a, 14b Housing section 16 First piston component 16a Component, sliding plate 16b Components, spindle 18 Braking direction 20 Return Spring 22 Second piston component, rod-shaped piston 24. Third piston component, floating piston 26. The second room 28 The third room 30. Second return spring 32. Third return spring 34 Spindle Nut 36 Electric motor 38 Bearings, Ball Bearings 40 Pressure regulation path 42 Seals 44 Housing seal 46 Pressure adjustment groove 48 Inner surface 54 Guide grooves 56 Guide section, sliding section, sliding section b1 First groove width b2 Second groove width S1, S2, S3, S10, S11, S12, S13, S14 Method Steps

Claims

1. A housing (14) for a piston cylinder device of a vehicle brake system, It has a pre-combustion chamber (10) formed in contact with and / or inside the housing (14), and a first chamber (12) formed inside the housing (14), A first piston component (16) is positioned in contact with and / or inside the housing (14) in an adjustable manner, wherein the first chamber (12) is located on the first side of the first piston component (16), and the pre-combustion chamber (10) is located on the second side of the first piston component (16) oriented away from the first side, and the volume of the first chamber (12) is reduced by the positional adjustment movement of the first piston component (16) oriented toward the first chamber (12) in a direction away from the pre-combustion chamber (10). At least one second piston component (22) is positionably positioned or positioned within the housing (14), wherein at least one force is transmitted to the second piston component (22) via mechanical contact between the first piston component (16) and the second piston component (22), or via mechanical contact between the first piston component (16) and the second piston component (22) and at least one compact force transmission component positioned between the first piston component (16) and the second piston component (22). In terms of form, The housing (14) is provided with at least one structured pressure regulating groove (46) on at least one inner surface (48), each of which extends at least from the pre-combustion chamber (10) to at least the first chamber (12), wherein during the positional adjustment movement of the first piston component (16), which is directed toward the first chamber (12) in a direction away from the pre-combustion chamber (10), at least one gaseous and / or liquid medium present in the first chamber (12) can move from the first chamber (12) through at least one of the pressure regulating grooves (46) into the pre-combustion chamber (10). The first piston component (16) has at least one guide portion (56), the guide portion (56) protruding into at least one guide groove (54) structured in the at least one inner surface (48) of the housing (14), each starting from at least the pre-combustion chamber (10) and extending at least to the first chamber (12), and at least one pressure regulating groove (46) structured in the at least one inner surface (48) of the housing (14) as a tapered portion of at least one of the guide grooves (54), Housing (14) for a piston cylinder device of a vehicle brake system.

2. The housing (14) according to claim 1, wherein at least one of the pressure regulating grooves (46) is structured on at least one of the inner surfaces (48) of the housing (14) by an extrusion process.

3. The housing (14) according to claim 1 or 2, wherein the housing (14) is a master brake cylinder housing or a housing for an electrically operated brake pressure generator that can be incorporated into or is incorporated within the hydraulic device of the vehicle brake system.

4. A method for manufacturing a housing (14) for a piston cylinder device of a vehicle brake system, comprising the following steps, namely: Step (S1) of forming a pre-combustion chamber (10) in contact with and / or inside the housing (14), The method includes the step (S2) of forming a first chamber (12) within the housing (14), The pre-combustion chamber (10) and the first chamber (12) are positioned relative to each other such that the first piston component (16) is adjustable in position to be in contact with and / or inside the housing (14), wherein the first chamber (12) is located on the first side of the first piston component (16), and the pre-combustion chamber (10) is located on the second side of the first piston component (16), directed away from the first side, and the volume of the first chamber (12) is reduced by the adjustment movement of the first piston component (16), which is directed towards the first chamber (12) in a direction away from the pre-combustion chamber (10). At least one second piston component (22) is positionably positioned within the housing (14), and at least one force that initiates a positional adjustment movement directed toward the first chamber (12) in a direction away from the pre-combustion chamber (10) is transmitted to the second piston component (22) via mechanical contact between the first piston component (16) and the second piston component (22), or via mechanical contact between the first piston component (16) and the second piston component (22) and at least one compact force transmission component positioned between the first piston component (16) and the second piston component (22). In the manufacturing method, The present invention features a step (S3) of structuring at least one pressure regulating groove (46) on at least one inner surface (48) of the housing (14), each starting at least from the pre-combustion chamber (10) and extending at least to the first chamber (12), thereby allowing at least one gaseous and / or liquid medium present in the first chamber (12) to move from the first chamber (12) through at least one of the pressure regulating grooves (46) into the pre-combustion chamber (10) during the positional movement of the first piston component (16), which is directed toward the first chamber (12) in a direction away from the pre-combustion chamber (10). For at least one guide portion (56) of the first piston component (16), at least one guide groove (54) is structured in at least one inner surface (48) of the housing (14), each starting at least from the pre-combustion chamber (10) and extending at least to the first chamber (12), so that after the first piston component (16) is positioned, at least one guide portion (56) of the first piston component (16) each protrudes into at least one guide groove (54), in which case at least one pressure regulating groove (46) is structured in at least one inner surface (48) of the housing (14) as a tapered portion of at least one guide groove (54). A method for manufacturing a housing (14) for a piston cylinder device of a vehicle brake system.

5. The manufacturing method according to claim 4, wherein at least one of the pressure regulating grooves (46) is structured on at least one of the inner surfaces (48) of the housing (14) by an extrusion process.

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