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 position-adjustable between a pre-chamber of the piston cylinder device and another chamber of the piston cylinder device. Thereby, the valve body is position-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 position-adjusted valve body, the motor force can be transmitted to the primary piston through mechanical contact between at least one force transmission component in contact with 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 for a piston cylinder device and a piston cylinder device that enable pressure adjustment between a first chamber and a pre - combustion chamber even in a rapid position - adjustment movement of a first piston component directed towards the first chamber in a direction away from the pre - combustion chamber, based on at least one of its pressure - adjustment grooves or at least one of its pressure - adjustment paths. Thereby, an inconvenient negative pressure in the pre - combustion chamber that acts against a desired rapid position - adjustment movement of the first piston component directed towards the first chamber and away from the pre - combustion chamber is reliably prevented. This contributes to enhancing the effect of each piston cylinder device when braking a vehicle equipped with such a piston cylinder device. Therefore, the present invention described herein improves the riding comfort and the safety standards of the vehicle utilizing the present invention. As will be further described in more detail below, the present invention also reduces the risk of air flowing into a brake circuit hydraulically connected to each piston cylinder device, the risk of dirt being sucked into a 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 - adjustment 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 - adjustment groove is structured on at least one inner surface of the housing using an extrusion process. Thus, at least one pressure - adjustment groove can be incorporated into the housing "directly" / with (almost) no additional cost with respect to the operations of housing production during housing manufacture. Therefore, forming at least one pressure - adjustment groove in the housing hardly increases its manufacturing cost at all.

[0007] As a preferred development form, the first piston component may have at least one guide part, and this guide part projects into at least one guide groove structured on at least one inner surface of the housing, each of which extends from at least the pre - combustion chamber to at least the first chamber. At least one pressure - regulating groove is structured on at least one inner surface of the housing as a tapered part of at least one guide groove. Thereby, the formation of at least one pressure - regulating groove can be carried out in a common working step together with the formation of at least one guide groove, so that the additional cost for the work to be performed to form 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 of an electric brake pressure generating device that can be incorporated or has been incorporated into a hydraulic device of a vehicle brake system. Therefore, the present invention described herein can be used in various ways. However, it should be pointed out that the usability for the housing described herein should be interpreted only as an example.

[0009] In a preferred embodiment of the piston - cylinder device according to the present invention, the piston - cylinder device is a master brake cylinder or an electric brake pressure generating device that can be incorporated or has been incorporated into a hydraulic device of a vehicle brake system. Therefore, the piston - cylinder device according to the present invention having at least one pressure - regulating path instead of at least one pressure - regulating groove may also be used in various ways. However, also in this case, the usability for the piston - cylinder device listed here should be interpreted only as an example.

[0010] The above advantages are also guaranteed when a corresponding manufacturing method for a housing for a piston cylinder device of a vehicle braking system or a manufacturing method for a piston cylinder device of a vehicle braking system is implemented. It is clearly pointed out here that the manufacturing methods listed can also be further developed and formed according to the above embodiments of the housing or the piston cylinder device.

Brief Description of the Drawings

[0011]

Figure 1a

Figure 1b

Figure 1c

Figure 1d

Figure 1e

Figure 1f

Figure 2

Figure 3

Embodiments 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 through 1f show schematic overall and partial views of one embodiment of a piston cylinder device or its housing.

[0014] The piston cylinder device schematically shown in Figures 1a through 1f may be used in a vehicle braking system. It is clearly pointed out that the usability of the piston cylinder device described below is not limited to a specific type of vehicle braking system. The vehicle / automobile equipped with this vehicle braking system is also not limited to a special vehicle type / 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 inside the piston cylinder device. In a preferred form, 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 inside the housing 14. Additionally, the piston cylinder device has a first piston component 16, and this first piston component is arranged between the pre - combustion chamber 10 and the first chamber 12 such that the first chamber 12 is located on the first side of the first piston component 16, while the pre - combustion chamber 10 is located on the second side of the first piston component 16, which is directed away from the first side. Further, the first piston component 16 is arranged in the piston cylinder device in a position - adjustable manner such that the first piston component 16 can move towards the first chamber 12 in a position - adjusting movement in the direction away from the pre - combustion chamber 10. At this time, the volume of the first chamber 12 can be reduced / is reduced by the position - adjusting movement of the first piston component 16. Further, the direction from the pre - combustion chamber 10 towards the first chamber 12 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 in the first chamber 12 such that the reset force of the first return spring 20 acts against a position adjustment movement in the braking direction 18 that can be initiated. A suitable possibility for initiating the position adjustment movement of the first piston component 16 in the braking direction 18 will be explained in detail below.

[0017] Furthermore, as can be seen from FIG. 1a, in addition to the first piston component 16, the piston cylinder device further comprises a second piston component 22 and possibly also a third piston component 24. The second piston component 22 is arranged to be position 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 arranged to be position adjustable between the second chamber 26 and the third chamber 28. The second piston component 22 may in particular be a rod-shaped piston 22, whereas the third piston component 24 may be configured as a floating piston 24. The rod-shaped piston 22 is 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, 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 position adjustment movement can be brought into mechanical contact with the second piston component 22, whereby at least one force for initiating the position adjustment 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 position adjustable / positioned together with the first piston component 16 moved in its braking direction 18 by the position adjustment movement, and at this time, at least one force for initiating the position adjustment movement of the first piston component 16 is 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 should be clearly pointed out that at least one compact force transmission component should not be understood as a liquid material and a gas material. Therefore, the force transmission between the first piston component 16 and the second piston component 22 is not (substantially) carried out via a pressure increase.

[0019] For example, in the illustrated embodiment, the first piston component 16 has a sliding plate 16a to which a spindle 16b is fixed (see FIG. 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 and interlocks with a spindle nut 34, and this spindle nut 34 converts the rotational movement of the electric motor 36 into a translational position adjustment movement of the first piston component 16. For this purpose, the spindle nut 34 is held within the housing 14 of the piston cylinder device using a bearing 38, for example, in particular a ball bearing 38. The spindle nut 34 and the bearing 38 block the movement of the gaseous and / or liquid medium present in the first chamber 12 from the first chamber 12 to the precombustion chamber 10, particularly during a relatively rapid position adjustment movement of the first piston component 16 in the braking direction 18, thereby delaying or preventing the desired pressure adjustment between the precombustion chamber 10 and the first chamber 12 in the conventional manner. This results in the conventional form, during the operation of a device according to the prior art, an inconvenient negative pressure often occurring in the precombustion chamber 10, thereby generating an opposing pressure that resists the desired rapid position adjustment movement of the first piston component 16 in the braking direction 18.

[0020] In order to eliminate the drawbacks of the prior art devices described above, the piston-cylinder device described herein has at least one pressure regulating path 40 (see FIGS. 1c to 1f), which pressure regulating path 40 is arranged in contact with and / or inside the piston-cylinder device such that during the positioning movement of the first piston component 16 in the braking direction 18, at least one gaseous and / or liquid medium in the first chamber 12 can be moved / moved through at least one pressure regulating circuit 40 from the first chamber 12 into the pre-chamber 10. Thereby, at least one pressure regulating path 40 prevents an inconvenient compression of at least one gaseous and / or liquid medium present in the first chamber 12 as well as an inconvenient negative pressure in the pre-chamber 10 even during a relatively rapid positioning movement of the first piston component 16 in the braking direction 18. Even if there is grease on the first piston component 16, at least one pressure regulating path 40 ensures that at least one medium moves advantageously from the first chamber 12 into the pre-chamber 10 during the rapid positioning movement of the first piston component 16 in the braking direction 18. Thus, the required relatively rapid positioning movement of the first piston component 16 in the braking direction 18 is not blocked at all / hardly by the counter pressure, so that the piston-cylinder device described herein can also (together) cause a highly dynamic braking of a vehicle / automobile equipped with a respective vehicle braking system based on at least one pressure regulating path 40 of this piston-cylinder device. Thereby, at least one pressure regulating path 40 provided in contact with and / or inside the piston-cylinder device improves the efficiency of the piston-cylinder device, which contributes to an improvement in the driving comfort and safety standards of a vehicle / automobile equipped with this piston-cylinder device.

[0021] At least one pressure regulating path 40 is in each case one pressure regulating path without a valve in a suitable form. Thereby, the need to "actuate" at least one pressure regulating path 40 is omitted in order to advantageously initiate the movement of at least one medium from the first chamber 12 into the pre-chamber 10.

[0022] Furthermore, a configuration in which at least one pressure regulating passage 40 is provided in contact with and / or inside the piston cylinder device enables careful operation with less wear of the piston cylinder device. The at least one pressure regulating passage 40 prevents an 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 at least one pressure regulating passage 40 also significantly reduces the conventional risk of a pressure load being applied to at least one seal 42 that guides the second piston component 22. As a result, the seal lip of the at least one seal 42 is handled more appropriately and carefully during operation of the piston cylinder device. This also reduces the conventional risk of air entering 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 operation of the piston cylinder device using the at least one pressure regulating passage 40. Similarly, the piston cylinder device or another component of the vehicle brake system that cooperates with this piston cylinder device, such as a microcontroller (ECU, electronic control unit), particularly at least one seal and / or a pressure regulating element (DAE) of the microcontroller, is better protected against damage caused by pressure loads by the configuration of the at least one pressure regulating passage 40. The at least one pressure regulating passage 40 also has the effect of resisting the inconvenient suction of moisture into the piston cylinder device from its surroundings.

[0023] As can be recognized in FIGS. 1c to 1f, at least one pressure adjustment path 40 may be structured, in particular as at least one pressure adjustment 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 the surface on which the first piston component 16 is adjustably arranged or arranged such that the first piston component 16 slides along the at least one inner surface 48 during its adjustment movement in the braking direction 18. By configuring at least one pressure adjustment groove 46 such that each at least one pressure adjustment groove 46 extends at least from the pre-chamber 10 to the first chamber 12, during the adjustment movement of the first piston component 16 in the braking direction 18, at least one medium present in the first chamber 12 can be ensured to be movable / moved from the first chamber 12 into the pre-chamber 10 through at least one pressure adjustment groove 46. As can be seen from the comparison of FIGS. 1b and 1c, in this case, neither the spindle nut 34 nor the bearing 38 or, in some cases, the grease present, acts against the required movement of at least one gaseous and / or liquid medium. As shown by the arrow 50 and the dashed line 52 in FIG. 1f, at least one medium present in the first chamber 12, for example air, can leak out from the first chamber 12 into the pre-chamber 10 through at least one pressure adjustment groove 46 during the adjustment movement of the first piston component 16 in the braking direction 18. This prevents an inconvenient negative pressure in the pre-chamber 10 or an inconvenient compression of the medium in the first chamber 12. Thereby, at least one pressure adjustment groove 46 enables a sufficiently early negative pressure correction even during a relatively rapid adjustment movement of the first piston component 16 in the braking direction 18.

[0024] At least one pressure adjustment groove 46 structured on at least one inner surface 48 of the housing 14 provides an inexpensive possibility for achieving negative pressure correction, especially over the entire housing length of the housing. As can be seen from FIGS. 1a to 1f, the basic functionality of the piston cylinder device is not changed by the configuration of at least one pressure adjustment groove 46 for negative pressure correction. Thus, at least one pressure adjustment 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 adjustment groove 46 is structured on at least one inner surface 48 of the housing 14 by an extrusion process. This enables an inexpensive configuration of at least one pressure adjustment groove 46 in the housing 14, which is incorporated into the manufacture of the housing 14. As can be recognized in FIGS. 1a and 1b, at least one pressure adjustment groove 46 may also be formed in the housing part 14a, which together with at least one other housing part 14b constitutes the housing 14 of the piston cylinder device. The housing 14 or the housing part 14a can have its basic shape (inner and outer shape) produced, for example, by an aluminum rod compression molding method. Then at least one pressure adjustment groove 46 may be structured on at least one inner surface 48 of the housing 14 / housing part 14a by an extrusion process, whereby at least one pressure adjustment groove is directly attached to the housing cross-section of the housing 14 / housing part 14a. It is not necessary to provide additional housing components in the housing 14 for realizing at least one pressure adjustment groove 46. Thus, no separate manufacturing step or component is required to form at least one pressure adjustment groove 46 in the piston cylinder device at a later time.

[0026] Since no other component is required to form at least one pressure adjustment groove 46, the formation of at least one pressure adjustment groove 46 neither increases the component variety of the piston cylinder device nor raises the assembly cost. However, the formation of at least one pressure adjustment groove 46 increases the mounting density of the piston cylinder device and helps to 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 carried out together / 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. In order to prevent an inconvenient rotational movement of the first piston component 16 even during a rapid position adjustment movement of the first piston component 16, the first piston component 16 often has at least one guide portion 56. At least one guide portion 56 of the first piston component 16 may be configured as a sliding portion / slide portion 56 in particular. 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 an anti-rotation means of the first piston component 16. The guiding of the first piston component 16 is usually carried out via at least one guide groove 54, into which at least one guide portion 56 projects respectively. At least one guide groove 54 may be structured on at least one inner surface 48 of the housing 14 such that each of them extends from at least the pre-combustion chamber 10 to at least the first chamber 12. In this case, configuring at least one pressure adjustment groove 46 and at least one guide groove 54 together / simultaneously is possible in an inexpensive way by structuring at least one pressure adjustment groove 46 as a tapered portion of at least one guide groove 54 on at least one inner surface 48 of the housing 14. Structuring at least one pressure adjustment groove 46 as a tapered portion of at least one guide groove 54 may be interpreted as that at least one pressure adjustment groove 46 is structured on the housing 14 on the side of the adjacent guide groove 54 directed in a direction away from the first piston component 16, wherein the first groove width b1 of each pressure adjustment groove 46 is smaller than the second groove width b2 of the adjacent guide groove 54 (see Fig. 1d).

[0028] However, it should be pointed out that the configuration of at least one pressure adjustment path 40 as at least one pressure adjustment groove 46 is merely optional. The above advantages are also guaranteed when, for example, at least one pressure adjustment path 40 extends through at least one other component of the piston cylinder device as the housing 14. At least one pressure adjustment path 40 extending through at least one other component of the piston cylinder device as the housing 14 also enables effective pressure adjustment and is generally inexpensive to implement during the manufacture of the piston cylinder device. For example, at least one pressure adjustment path 40 may be interpreted as at least one pressure adjustment path extending through the first piston component 16. Such a form of pressure adjustment path 40 also contributes advantageously to the rapid pressure adjustment between the first chamber 12 and the pre-combustion chamber 10 of the piston cylinder device, especially during the dynamic operation of the piston cylinder device.

[0029] In the embodiments of FIGS. 1a to 1f, the piston cylinder device is, for example, a master brake cylinder, particularly a master brake cylinder of a brake-by-wire brake system. Accordingly, the housing 14 of the piston cylinder device may be referred to as a master brake cylinder housing. However, it should be made clear that the configuration of the master brake cylinder shown schematically in FIG. 1a, particularly for a brake-by-wire brake system, is to be interpreted as an example only. Also, the configuration of the first piston component 16 with the spindle 16b, the conversion of the rotational movement of the rotating electric motor 36 into a translational position adjustment movement 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 shown schematically in FIG. 1a are also to be interpreted as examples only.

[0030] In an alternative embodiment, the first piston component 16 may be the valve body (Boost Body) of an electromechanical / electric braking booster device of a piston-cylinder device, which valve body is pre-connected to a braking operation element, for example, in particular, the master brake cylinder of the piston-cylinder device to which the brake pedal is connected. Similarly, the first piston component 16 may be construed as a driver braking force transmission component, to which only the driver braking force applied to the braking operation element / brake pedal can be transmitted, but not the motor force of the electric motor. Accordingly, the piston-cylinder device may be a master brake cylinder "without a braking booster device".

[0031] Alternatively, the piston-cylinder device may be an electric braking pressure generating device that can be incorporated into or is incorporated into the hydraulic device of a vehicle braking system. In this case, the housing of the piston-cylinder device may be referred to as the housing 14 of an electric braking pressure generating device that can be incorporated into or is incorporated into the hydraulic device of a vehicle braking system. Accordingly, at least one force that initiates the position adjustment 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 braking operation element / brake pedal.

[0032] FIG. 2 shows a flowchart for explaining an embodiment of a manufacturing method for a housing for a piston-cylinder device of a vehicle braking system.

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

[0034] In method step S1, a pre-combustion chamber is configured (subsequently) in contact with and / or inside the housing. Further, in method step S2, a first chamber is formed (subsequently) inside the housing. Method steps S1 and S2 may be carried out in any order, overlapping in time or carried out simultaneously. In this case, the pre-combustion chamber and the first chamber are arranged opposite to each other such that a first piston component can be arranged in an adjustable position in contact with and / or inside the housing, wherein the first chamber is located on a first side of the first piston component and the pre-combustion chamber is formed on a second side of the first piston component directed away from the first side. Further, when carrying out method steps S1 and S2, the adjustability of the position of the first piston component is ensured such that the volume of the first chamber can be reduced / is reduced by a position adjustment movement of the first piston component directed from the pre-combustion chamber towards the first chamber. Further, at least one second piston component can also be arranged in an adjustable position inside the housing, wherein at least one force initiating a position adjustment movement directed from the pre-combustion chamber towards the first 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 at least one compact force transmission component arranged between the first piston component and the second piston component and the second piston component.

[0035] The manufacturing method described herein also has method step S3, in which at least one pressure adjustment groove, each extending from at least the pre-combustion chamber to at least the first chamber, is structured on at least one inner surface of the housing, such that during the positioning movement of the first piston component directed towards the first chamber in a direction away from the pre-combustion chamber, at least one gaseous and / or liquid medium present in the first chamber can be moved / moved through at least one pressure adjustment groove from the first chamber into the pre-combustion chamber. At least one pressure adjustment groove may in particular be structured on at least one inner surface of the housing by an extrusion process, and thus method step S3 may be carried out simultaneously with method steps S1 and S2 in a suitable form. In a suitable form, in method step S3, at least one guide groove, each extending from at least the pre-combustion chamber to at least the first chamber, is also structured on at least one inner surface of the housing for at least one guide part of the first piston component. This is done such that after the first piston component is arranged, at least one guide part of the first piston component projects into at least one guide groove respectively. In this case, in a suitable form, at least one pressure adjustment groove is structured on at least one inner surface of the housing as a tapered portion of at least one guide groove respectively.

[0036] Figure 3 shows a flowchart for explaining an 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 manufacturing the above piston cylinder device, but is not limited to such a configuration.

[0038] In method step S10, the pre - combustion chamber is configured in contact with and / or inside the piston - cylinder device. Additionally, in method step S11, a first chamber is formed within the piston - cylinder device. Then, as method step S12, a first piston component is arranged in a position - adjustable manner in contact with and / or inside the piston - cylinder device, wherein the first chamber is located on a first side of the first piston component, and the pre - combustion chamber is located on a second side of the first piston component facing away from this first side. In contrast, the volume of the first chamber is reduced by the position - adjusting movement of the first piston component directed towards the first chamber in a direction away from the pre - combustion chamber. Further, in method step S13, at least one second piston component is positioned in a position - adjustable manner within the piston - cylinder device, and at least one force initiating a position - adjusting movement directed towards the first chamber in a direction away from the pre - combustion chamber 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 at least one compact force - transmission component arranged between the first piston component and the second piston component and the second piston component.

[0039] This manufacturing method additionally further has method step S14, in which at least one pressure - regulating passage is configured in contact with and / or inside the piston - cylinder device, whereby during the position - adjusting movement of the first piston component directed towards the first chamber in a direction away from the pre - combustion chamber, at least one gaseous and / or liquid medium present in the first chamber is caused to move from the first chamber through at least one pressure - regulating passage into the pre - combustion chamber. Thereby, the piston - cylinder device manufactured using the manufacturing method described herein meets the aforementioned advantages already explained. Method steps S10 to S14 are carried out in an arbitrary order and may optionally be carried out overlapping in time.

Explanation of reference numerals

[0040] 10 Pre - combustion chamber 12 First chamber 14 Housing 14a, 14b Housing parts 16 First piston component 16a Component, sliding plate 16b Component, spindle 18 Braking direction 20 Return spring 22 Second piston component, rod - shaped piston 24 Third piston component, floating piston 26 Second chamber 28 Third chamber 30 Second return spring 32 Third return spring 34 Spindle nut 36 Electric motor 38 Bearing, ball bearing 40 Pressure - regulating passage 42 Seal 44 Housing seal 46 Pressure - regulating groove 48 Inner surface 54 Guide groove 56 Guide part, sliding part, slide part 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, having 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), wherein a first piston component (16) is arranged or can be arranged in a position-adjustable manner in contact with and / or inside the housing (14), and in this case, the first chamber (12) is located on a first side of the first piston component (16), the pre-combustion chamber (10) is located on a second side of the first piston component (16) directed in a direction away from the first side, and the volume of the first chamber (12) can be reduced by a position-adjustment movement of the first piston component (16) directed in a direction away from the pre-combustion chamber (10) towards the first chamber (12), at least one second piston component (22) is arranged or can be arranged in a position-adjustable manner inside the housing (14), and in this case, at least one force for initiating a position-adjustment movement directed from the pre-combustion chamber (10) towards the first chamber (12) can be 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 at least one compact force transmission component arranged between the first piston component (16) and the second piston component (22) and the second piston component (22), in the form of, At least one pressure adjustment groove (46) structured on at least one inner surface (48) of the housing (14) is provided. Each of the pressure adjustment grooves (46) extends at least from the pre-combustion chamber (10) to at least the first chamber (12). 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 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 adjustment grooves (46) into the pre-combustion chamber (10). A housing (14) for a piston cylinder device of a vehicle brake system, characterized by the above.

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

3. The first piston component (16) has at least one guide part (56). Each of the guide parts (56) projects into at least one guide groove (54) structured on at least one of the inner surfaces (48) of the housing (14) and extending at least from the pre-combustion chamber (10) to at least the first chamber (12). Each of at least one of the pressure adjustment grooves (46) is structured on at least one of the inner surfaces (48) of the housing (14) as a tapered part of at least one of the guide grooves (54). The housing (14) according to claim 1 or 2.

4. The housing (14) according to any one of claims 1 to 3, wherein the housing (14) is a master brake cylinder housing or a housing of an electric brake pressure generating device that can be incorporated or is incorporated into a hydraulic device of the vehicle brake system.

5. A piston cylinder device for a vehicle brake system, a pre-combustion chamber (10) formed in contact with and / or inside the piston cylinder device, a first chamber (12) formed inside the piston cylinder device, a first piston component (16), and has a first piston component (16) which is arranged in a position-adjustable manner in contact with and / or inside the piston cylinder device, wherein 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) which is directed in a direction away from the first side, and the volume of the first chamber (12) can be reduced by a position-adjusting movement of the first piston component (16) in a direction away from the pre-combustion chamber (10) and towards the first chamber (12), furthermore, the piston cylinder device has at least one second piston component (22) which is arranged in a position-adjustable manner inside the piston cylinder device, and at least one force for initiating a position-adjusting movement directed from the pre-combustion chamber (10) away and towards the first chamber (12) can be 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 at least one compact force transmission component arranged between the first piston component (16) and the second piston component (22) and the second piston component (22). In the piston cylinder device for the vehicle brake system, at least one pressure adjustment path (40) is configured in contact with and / or inside the piston cylinder device, and at least one gaseous and / or liquid medium present in the first chamber (12) during a position-adjusting movement of the first piston component (16) directed from the pre-combustion chamber (10) away and towards the first chamber (12) can move from the first chamber (12) through at least one of the pressure adjustment paths (40) into the pre-combustion chamber (10). A piston cylinder device for a vehicle brake system, characterized in that. Claim 6 The piston cylinder device according to claim 5, wherein the piston cylinder device is a master brake cylinder or an electric brake pressure generating device that can be incorporated into or is incorporated into a hydraulic device of a vehicle brake system.

7. A method for manufacturing a housing (14) for a piston cylinder device of a vehicle brake system, comprising the following steps, namely: Forming a pre-combustion chamber (10) in contact with and / or inside the housing (14) (step S1); Forming a first chamber (12) inside the housing (14) (step S2), The pre-combustion chamber (10) and the first chamber (12) are arranged opposite to each other such that a first piston component (16) can be arranged in a position-adjustable manner in contact with and / or inside the housing (14). At this time, the first chamber (12) is located on a first side of the first piston component (16), the pre-combustion chamber (10) is located on a second side of the first piston component (16) directed in a direction away from the first side, and the volume of the first chamber (12) can be reduced by a position-adjustment movement of the first piston component (16) directed in a direction away from the pre-combustion chamber (10) towards the first chamber (12); At least one second piston component (22) can be arranged in a position-adjustable manner inside the housing (14), and at least one force for initiating a position-adjustment movement directed from the pre-combustion chamber (10) towards the first chamber (12) can be 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 at least one compact force transmission component arranged between the first piston component (16) and the second piston component (22) and the second piston component (22); In the manufacturing method, Structuring at least one pressure regulating groove (46) on at least one inner surface (48) of the housing (14), each of which extends at least from the pre - combustion chamber (10) and at least to the first chamber (12), such that during the positioning movement of the first piston component (16) directed towards 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). A method for manufacturing a housing (14) for a piston - cylinder device of a vehicle brake system, characterized by having step (S3).

8. The manufacturing method according to claim 7, 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) using an extrusion process.

9. For at least one guide portion (56) of the first piston component (16), structuring at least one guide groove (54) on at least one of the inner surfaces (48) of the housing (14), each of which extends at least from the pre - combustion chamber (10) and at least to the first chamber (12), such that after the arrangement of the first piston component (16), at least one of the guide portions (56) of the first piston component (16) projects into at least one of the guide grooves (54). At this time, at least one of the pressure regulating grooves (46) is structured in at least one of the inner surfaces (48) of the housing (14) as a tapered portion of at least one of the guide grooves (54). The manufacturing method according to claim 7 or 8.

10. In a method for manufacturing a piston - cylinder device for a vehicle brake system, the following steps, namely, Forming a pre - combustion chamber (10) in contact with and / or inside the piston - cylinder device (step S10); Forming a first chamber (12) in the piston - cylinder device (step S11); A first piston component (16) is disposed in a position-adjustable manner in contact with and / or inside the piston cylinder device, 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) directed away from the first side. The volume of the first chamber (12) is reduced by a position-adjustment movement of the first piston component (16) directed towards the first chamber (12) in a direction away from the pre-combustion chamber (10) (step S12). At least one second piston component (22) is disposed in a position-adjustable manner within the piston cylinder device, such that at least one force initiating a position-adjustment movement directed from the pre-combustion chamber (10) towards the first chamber (12) 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 at least one compact force-transmission component disposed between the first piston component (16) and the second piston component (22) and the second piston component (22) (step S13). in a manufacturing method having: characterized in that it has a step (S14) of forming at least one pressure adjustment path (40) in contact with and / or inside the piston cylinder device, such that during a position-adjustment movement of the first piston component (16) directed from the pre-combustion chamber (10) towards the first chamber (12), at least one gaseous and / or liquid medium present in the first chamber (12) is moved from the first chamber (12) into the pre-combustion chamber (10) through at least one of the pressure adjustment paths (40), a manufacturing method for a piston cylinder device for a vehicle brake system.

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