Electromechanical brake force booster for a vehicle brake system - Patents.com

Abstract

The present invention relates to an electromechanical brake force booster for a vehicle braking system, comprising an electric motor (12), at least one linearly adjustable piston component (14), a power train arrangement (16) via which the electric motor (12) is coupled to the at least one linearly adjustable piston component (14) such that a motor force of the electric motor (12) is transferable via the power train arrangement (16) onto the at least one linearly adjustable piston component (14), a power train housing component (18) at least partially surrounding the power train arrangement (16), and at least one tie rod (20), the tie rod (20) being connected to the at least one linearly adjustable piston component (14). The present invention relates to an electromechanical brake force booster for a vehicle brake system, comprising: a piston component (14) that is linearly adjusted by a transmitted motor force; and at least one tie rod (20) that is constrained so as to be guided by the at least one tie rod (20). The electromechanical brake force booster relates to an electromechanical brake force booster for a vehicle brake system, comprising: an intermediate plate (22, 44), which is manufactured as a separate component from the power train housing component (18), and the at least one tie rod (20) is attached to the intermediate plate (22, 44), and the intermediate plate (22, 44) is attached to the power train housing component (18).

Description

[Technical field]

[0001] The present invention relates to an electromechanical brake force booster for a vehicle brake system. The present invention also relates to a brake system for a vehicle. Furthermore, the present invention relates to a manufacturing method for an electromechanical brake force booster for a vehicle brake system. [Background technology]

[0002] Known from the prior art, for example from DE 10 200 43 511 A1, are electromechanical brake force boosters which respectively comprise an electric motor, a power train device and a linearly adjustable piston component, which is adjustable by a motor force of the electric motor transmitted via the power train device. Electromechanical brake force boosters of this type typically further comprise a power train housing component of the power train device and at least one tie rod guiding the linearly adjustable piston component. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] DE 102018211549 Summary of the Invention

[0004] The invention provides an electromechanical brake force booster for a vehicle braking system with the features of claim 1, a brake system for a vehicle with the features of claim 9 and a manufacturing method for an electromechanical brake force booster for a vehicle braking system with the features of claim 10. Effect of the Invention

[0005] The invention provides an electromechanical brake force booster, in which the conventional need for mounting at least one tie rod on the housing bottom of a powertrain housing component is omitted, due to the fact that each electromechanical brake force booster is equipped with an intermediate plate. The introduction of the intermediate plate into the electromechanical brake force booster according to the invention results in a decoupling of the respective position of the at least one tie rod with respect to the vehicle wall, to which the electromechanical brake force booster is mounted by means of at least one screw fastened to the housing bottom of the powertrain housing component. Due to the decoupling achieved according to the invention of the respective position of the at least one tie rod with respect to the vehicle wall, the position of the electromechanical brake force booster according to the invention can be selected with (almost) 360° (degrees) of orientation freedom, depending on the availability of assembly space available for mounting the electromechanical brake force booster on the vehicle wall. As will become additionally clear on the basis of the following description, by introducing an intermediate plate into the electromechanical brake booster according to the invention, the component variations of the powertrain housing components of the electromechanical brake booster, which are necessary for equipping a large number of different vehicle / automobile types with the electromechanical brake booster, are significantly reduced. Furthermore, if the electromechanical brake booster according to the invention is equipped with exactly two tie rods which are attached to the intermediate plate, a symmetrical arrangement of the electric motor with respect to both tie rods is possible.

[0006] In an advantageous embodiment of the electromechanical brake force booster, at least a part of the intermediate plate forms a motor bearing shield for the electric motor. The intermediate plate can thereby also be used to integrate the function of the motor bearing shield. Due to this multifunctionality of the intermediate plate, it can be omitted to equip the described embodiment of the electromechanical brake force booster with an "additional motor bearing shield".

[0007] For example, the intermediate plate may be attached to the powertrain housing component by at least one rivet connection, at least one screw connection, at least one welded connection and / or at least one clinch connection. A number of high retention strength techniques can thereby be used to attach the intermediate plate to the powertrain housing component, which can be easily and inexpensively implemented.

[0008] Preferably, at least one screw is attached to the housing bottom of the powertrain housing component on the side facing away from the intermediate plate, by means of which the electromechanical brake force booster can be attached or is attached to the vehicle wall. Since the respective position of the at least one tie rod is decoupled from the at least one mounting opening punched through the housing bottom of the at least one screw due to the additional provision of the electromechanical brake force booster intermediate plate to the electromechanical brake force booster, the conventional need to adapt the punch press used to form the at least one mounting opening of the at least one screw with respect to the respective desired position of the at least one tie rod is omitted. This reduces the manufacturing costs for the powertrain housing component including the at least one screw and eliminates the conventional downtime during the production of the powertrain housing component.

[0009] In another advantageous embodiment of the electromechanical brake force booster, at least one tie rod, a first tie rod and a second tie rod, are attached to the intermediate plate, the first tie rod and the second tie rod running parallel to one another with a maximum distance of 80 mm or less. Due to the inventive attachment of the two tie rods to the powertrain housing component, the tie rods can be arranged closer to one another. The provision of the electromechanical brake force booster with an electromechanical brake force booster intermediate plate can thereby be used to save assembly space.

[0010] If one end of the at least one tie rod facing away from the intermediate plate is attached to a flange of the main brake cylinder, the flange of the main brake cylinder can have a maximum diameter of 80 mm or less in a spatial direction perpendicular to the at least one tie rod, which can be used to save material in the main brake cylinder housing formed with the flange of the main brake cylinder.

[0011] Preferably, a motor housing, which at least partially surrounds the electric motor, is attached to the intermediate plate, which can thereby also be used for mounting the motor housing.

[0012] In another advantageous embodiment of the electromechanical brake force booster, a cover which at least partially surrounds the at least one linearly adjustable piston component and the at least one tie rod is attached to the intermediate plate, the cover having a maximum diameter of less than or equal to 100 mm in a spatial direction oriented perpendicular to the at least one tie rod. The advantageous provision of the electromechanical brake force booster described herein with an electromechanical brake force booster intermediate plate allows for smaller spacing between the tie rods and therefore also the use of a cover with a reduced diameter compared to the prior art, so that assembly space can be saved in the described embodiment of the electromechanical brake force booster.

[0013] The aforementioned advantages are also ensured in a braking system for a vehicle equipped with an electromechanical brake force booster of this kind, which may be, for example, a brake-by-wire braking system or a servo braking system.

[0014] Furthermore, the implementation of a corresponding manufacturing method for an electromechanical brake force booster for a vehicle brake system also provides the above-mentioned advantages. It should be explicitly noted that the manufacturing method can be further developed according to the above-mentioned embodiment of the electromechanical brake force booster.

[0015] Further features and advantages of the invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings. [Brief description of the drawings]

[0016] [Figure 1a] FIG. 1 is a schematic diagram of a first embodiment of an electromechanical brake force booster; [Figure 1b] FIG. 1 is a schematic diagram of a first embodiment of an electromechanical brake force booster; [Figure 1c] FIG. 1 is a schematic diagram of a first embodiment of an electromechanical brake force booster; [Figure 1d] FIG. 1 is a schematic diagram of a first embodiment of an electromechanical brake force booster; [Figure 2a] FIG. 4 is a schematic diagram of a second embodiment of an electromechanical brake force booster; [Figure 2b] FIG. 4 is a schematic diagram of a second embodiment of an electromechanical brake force booster; [Diagram 3] 3 is a flow chart illustrating an embodiment of a manufacturing method for an electromechanical brake force booster for a vehicle braking system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] 1a to 1d show a schematic diagram of a first embodiment of an electromechanical brake force booster.

[0018] The electromechanical brake force booster as shown diagrammatically in Fig. 1a to 1d can be used in a braking system of a vehicle / automobile. The braking system can be, for example, a servo brake system. In a servo brake system, a brake operating element (not shown), for example a brake pedal, is mechanically coupled to the electromechanical brake force booster, such that a driver braking force exerted on the brake operating element can be "inputted" into a main brake cylinder 10, in which a brake pressure build-up can be triggered by the driver braking force. The electric motor 12 of the electromechanical brake force booster can in this case be used to jointly increase the brake pressure build-up triggered by the driver braking force in the main brake cylinder 10 by the motor force of the electric motor 12, so that the driver is power-assisted when braking a vehicle / automobile equipped with a servo brake system. Alternatively, the braking system can be a brake-by-wire brake system. In a brake-by-wire brake system, the driver only brakes in the simulator by means of his driver brake force, whereas the brake pressure build-up in the main brake cylinder 10 is caused only by the motor force of the electric motor 12 of the electromechanical brake force booster. The basic type of electromechanical brake force booster described here can easily be selectively adapted to a servo brake system or a brake-by-wire brake system by only minor conversion of a few components of the electromechanical brake force booster. The general structure of the electromechanical brake force booster described below, as well as its manufacturing process and the assembly process to be carried out in order to assemble the electromechanical brake force booster in a vehicle / automobile, are (almost) independent of whether this electromechanical brake force booster is subsequently used selectively for a servo brake system or for a brake-by-wire brake system.

[0019] The main brake cylinder 10 may alternatively be understood as the main brake cylinder 10 of an electromechanical brake force booster or as the main brake cylinder 10 attached to the electromechanical brake force booster as a component manufactured separately from the electromechanical brake force booster. It should be further noted that the applicability of the electromechanical brake force booster is not limited to a particular vehicle type / automobile type of the vehicle / automobile that will subsequently be equipped with the electromechanical brake force booster.

[0020] The electromechanical brake force booster additionally comprises at least one linearly adjustable piston component 14, e.g. a valve body, to the electric motor 12 of the electromechanical brake force booster. Furthermore, the electromechanical brake force booster comprises a transmission device 16, via which the electric motor 12 is coupled to the linearly adjustable at least one piston component 14, in such a way that, during operation of the electric motor 12, the motor force of the electric motor 12 can be / is transmitted via the transmission device 16 onto the linearly adjustable at least one piston component 14. The piston component 14 is linearly adjustable, in particular by the transmitted motor force of the electric motor 12, in the direction towards the main brake cylinder 10, such that a brake pressure build-up can / is triggered in the main brake cylinder 10 by means of the linearly adjusted piston component 14.

[0021] As can be seen in Fig. 1a, a powertrain housing component 18 at least partially surrounds the powertrain arrangement 16. Fig. 1a also shows at least one tie rod 20, to which at least one linearly adjustable piston component 14 is restrained in such a way that the piston component 14, which is linearly adjusted by the transmitted motor force, is guided by the at least one tie rod 20. Each of the at least one tie rod 20 may also be understood as a tie anchor. The electromechanical brake force booster of Figs. 1a to 1d furthermore comprises an intermediate plate 22, to which the at least one tie rod 20 is attached. The intermediate plate 22 is furthermore attached to the powertrain housing component 18. As a result, a mechanical contact exists between the at least one tie rod 20 and the intermediate plate 22 and between the intermediate plate 22 and the powertrain housing component 18. However, it should be noted that the intermediate plate 22 is understood to be a component that is manufactured separately from the powertrain housing component 18 .

[0022] By mounting the at least one tie rod 20 on the intermediate plate 22, the conventional need for mounting the at least one tie rod 20 directly on the housing bottom of the powertrain housing component 18, i.e. for mounting the at least one tie rod 20 in mechanical contact with the housing bottom of the powertrain housing component 18, is omitted. This allows the powertrain housing component 18 to be manufactured without punching at least one tie rod opening for mounting the at least one tie rod 20 on the housing bottom of the powertrain housing component 18. Whereas the prior art still requires punching at least one tie rod opening in the powertrain housing component 18 by means of a punch press, this need is omitted in the electromechanical brake force booster of Figures 1a to 1d. This is advantageous since the powertrain housing component 18 can be arranged in different orientations when assembling the electromechanical brake force booster to different vehicle types, depending on the available assembly space. (The orientation of the powertrain housing component 18 selected during the assembly of the electromechanical brake force booster is itself usually predetermined by the availability of sufficient assembly space for the electric motor 12.) The omission of the conventional need to punch at least one tie rod opening for mounting at least one tie rod 20 in the powertrain housing component 18 also omits the conventional need to adapt the punch press used for this depending on the vehicle type that will subsequently be equipped with the electromechanical brake force booster, and thus the downtime of the tools used in production. Furthermore, the component variations of the powertrain housing component 18 required in the prior art, such as multiple component families with geometrically different variations, are omitted. The omission of the component variations "mirror" / "non-mirror" that were previously required also contributes to the reduction of the component variations of the powertrain housing component 18 of the electromechanical brake force booster described here.The reduction of the component variations also makes it possible to reduce process variations in the production line. The production line can also be utilized more efficiently, since the previously occurring downtimes of the tools are omitted. Since the number of tool changes in the production line is additionally significantly reduced, the tools can also be constructed less complex and therefore less expensive. Previously occurring costs for the variation management are also omitted. Furthermore, the complexity of the production line can be reduced by reducing the component variations. This has a positive impact both on the service life of the production line and on the initial investment of the production line. All the advantages described here contribute to cost savings in the manufacture of the powertrain housing component 18, compared to which the "additional costs" of the intermediate plate 22 are negligible.

[0023] The intermediate plate 22 can be attached to the powertrain housing component 18, for example, by at least one rivet connection 24, at least one screw connection, at least one welded connection and / or at least one clinch connection. This allows a large number of easily configurable and high-retention connection types to be available for attaching the intermediate plate 22 to the powertrain housing component 18. The intermediate plate 22 may have a flat / planar shape. However, it should be noted that the shape of the intermediate plate 22 shown in FIG. 1a as a flat / planar plate should be interpreted as exemplary only. The surface extent of the intermediate plate 22 may be such that the intermediate plate 22 attached to the powertrain housing component 18 completely covers the recess / receiving opening of the powertrain device 16 formed in the powertrain housing component 18. For example, the intermediate plate 22 may be formed with a central opening 22a such that the motor force of the electric motor 12 can be transmitted onto the linearly adjustable at least one piston component 14 of the powertrain arrangement 16 via at least one component that passes through the central opening 22a of the intermediate plate 22. Optionally, the driver braking force can also be transmitted in a direction towards the primary brake cylinder 10 via a force transmitting component, such as an input rod, that passes through the central opening 22a of the intermediate plate 22.

[0024] FIG. 1b shows the electromechanical brake force booster after the components thereof shown separately in FIG. 1a are assembled. It can be seen that the electromechanical brake force booster comprises at least one screw 26, which is attached to the housing bottom of the powertrain housing component 18 on the side facing away from the intermediate plate 22. The at least one screw 26 can be, for example, a pin screw (stud) in each case. The at least one screw 26 can be used to attach the electromechanical brake force booster to a vehicle wall (not shown) of the vehicle / motor vehicle when assembling the electromechanical brake force booster to a vehicle / motor vehicle to be constructed with the electromechanical brake force booster. The respective position of the at least one screw 26 in the at least one mounting opening punched through the housing bottom of the powertrain housing component 18 is / can be selected relatively freely.

[0025] As can also be seen in Fig. 1b, a motor housing 28, which at least partially surrounds the electric motor 12, can be attached to the intermediate plate 22. The motor housing 28 is / can be attached to the intermediate plate 18, preferably to the side of the intermediate plate 18 facing away from the powertrain housing component 18, for example by means of at least one rivet connection 29, at least one screw connection, at least one welded connection and / or at least one clinch connection.

[0026] FIG. 1c shows a cross-sectional view of a part of the electromechanical brake force booster of FIG. 1b. As can be seen from FIG. 1c, at least a part of the intermediate plate 22 can form the motor bearing shield / A bearing shield of the electric motor 12. The function of the motor bearing shield / A bearing shield formed as an individual component can thereby be ensured by the intermediate plate 22. By using the intermediate plate 22, the motor bearing shield / A bearing shield, which would otherwise be formed as an individual component, can therefore be omitted (without any part replacing it). As can be seen from FIG. 1c, the intermediate plate 22 can also be formed with a further opening 22b passing through it, through which the planet carrier 30 passes. An epicyclic transmission 32, which is arranged in the motor housing 28, can be arranged on the planetary carrier 30, whereas a drive gear 34 of the planetary carrier 30 is located on the side of the intermediate plate 22 that is directed away from the epicyclic transmission 32. The drive gear 34 can furthermore be arranged on the housing bottom of the transmission housing component 18 by means of a bearing carrier 36. The components 30 to 36 shown in Fig. 1c should however be interpreted as exemplary only.

[0027] The electromechanical brake force booster, as shown diagrammatically in Figures 1a to 1d, comprises, as at least one tie rod 20 of the electromechanical brake force booster, exactly two tie rods 20, which are attached to an intermediate plate 22. Due to the attachment of the two tie rods 20 to the intermediate plate 22, the necessity of observing a minimum distance of at least 100 mm (millimeters) between the two tie rods 20 is omitted, which is necessary if, as before, the tie rods are attached to the housing bottom of the powertrain housing component 18. The maximum distance between the two tie rods 20 can therefore be less than 100 mm (millimeters). For example, the two tie rods 20 of the electromechanical brake force booster described here can run parallel to one another with a maximum distance of less than or equal to 80 mm (millimeters), in particular with a maximum distance of less than or equal to 75 mm (millimeters), in particular with a maximum distance of less than or equal to 70 mm (millimeters).

[0028] As will become apparent on the basis of the following description, reducing the maximum spacing between two tie rods 20 can be utilized to reduce the required assembly space of an electromechanical brake force booster device formed with the tie rods 20.

[0029] A reduction in the maximum distance between the two tie rods 20 of the electromechanical brake force booster can be used, for example, to make the main brake cylinder housing 38 of the main brake cylinder 10 more compact. In particular, the flanges 38a of the main brake cylinder housing 38 of the main brake cylinder 10, to which one end of the tie rod 20 is respectively attached, which is directed away from the intermediate plate 22, can be made smaller. For example, the main brake cylinder 10 of the electromechanical brake force booster can be made with a flange 38a of the main brake cylinder housing 38 of the main brake cylinder 10, which has, in a spatial direction oriented perpendicular to the tie rod 20, a maximum diameter of 80 mm (millimeters) or less, for example a maximum diameter of 75 mm (millimeters) or less, in particular a maximum diameter of 70 mm (millimeters) or less. The associated material savings in the main brake cylinder housing 38 reduce the manufacturing costs of the main brake cylinder housing 38 and facilitate the assembly of the main brake cylinder 10. Since the maximum extent of the flange 38a of the main brake cylinder housing 38 perpendicular to the tie rods 20 is (substantially) predetermined by the maximum spacing between the tie rods 20, the reduction in the maximum diameter of the flange 38a of the main brake cylinder housing 38 made possible by the advantageous reduction in the maximum spacing between the tie rods 20 does not entail any disadvantages.

[0030] 1a to 1d also show a cover 40, which at least partially surrounds the at least one linearly adjustable piston component 14 and the tie rod 20 and is attached to the intermediate plate 22. Due to the reduced maximum distance between the tie rods 20, the cover 40 can also be made smaller. In particular, the cover 40 can have a maximum diameter of 100 mm (millimeters) or less, for example a maximum diameter of 90 mm (millimeters) or less, in particular a maximum diameter of 80 mm (millimeters) or less in a spatial direction oriented perpendicular to the tie rods 20. In the case of the cover 40, a dead volume that is often unused in the past in the envelope 42 that at least partially surrounds the at least one linearly adjustable piston component 14 and the tie rod 20 is thereby omitted. Instead, the design of the cover 40 can be optimized and made in such a way that in the case of the electromechanical brake force booster described here, there is (almost) no unused dead volume in the cover 40. This leads to further assembly space savings in the electromechanical brake force booster. At the same time, relatively little material can be used for the cover 40, which reduces the manufacturing costs of the cover 40. Optionally, the cover 40 can be formed with a sealing portion 40a, which liquid-tightly seals the intermediate gap that exists between the cover 40 and the intermediate plate 22.

[0031] For comparison, Fig. 1d shows an envelope 42 of a conventional electromechanical brake force booster, which at least partially encloses at least one linearly adjustable piston component of the conventional electromechanical brake force booster and its tie rod. The envelope 42 of the conventional electromechanical brake force booster is projected onto the cover 40 of the electromechanical brake force booster of Figs. 1a to 1d. It can be seen on the basis of this comparison that the assembly space required of the electromechanical brake force booster of Figs. 1a to 1d is also significantly reduced due to the advantageously small size of the cover 40 of the electromechanical brake force booster. Furthermore, the small size of the cover 40 makes it easier to arrange the control electronic system 43 on the side of the motor housing 28 facing away from the intermediate plate 22.

[0032] 2a and 2b show a schematic diagram of a second embodiment of an electromechanical brake force booster.

[0033] In the case of the electromechanical brake force booster of Fig. 2a and 2b, the intermediate plate 44 is configured as a U-profile (carrier) 44. The U-profile 44 is smaller and more flexurally rigid than the intermediate plate 22 of the previous embodiment. The recess / receiving opening formed in the powertrain housing component 18 of the powertrain arrangement 16 is only partially covered by the U-profile 44 attached to the powertrain housing component 18. A central opening 44a may also be formed in the U-profile 44, so that the motor force of the electric motor 12 can be transmitted via at least one component of the powertrain arrangement 16 passing through the central opening 44a onto the at least one linearly adjustable piston component 14, and possibly also the driver braking force can be transmitted via a force transmitting component passing through the central opening 44a in the direction towards the main brake cylinder 10.

[0034] The cover 40 (not shown) is preferably formed such that the cover 40 overhangs the U-profile 44, i.e., the U-profile 44 is located within the volume enclosed by the cover 40. This obviates the need for a seal between the cover 40 and the U-profile 44.

[0035] For further properties and characteristics as well as advantages of the electromechanical brake force booster device which is partially shown diagrammatically in FIGS. 2a and 2b, reference is made to the description of the embodiment of FIGS. 1a to 1d.

[0036] FIG. 3 shows a flow chart illustrating an embodiment of a manufacturing method for an electromechanical brake force booster for a vehicle braking system.

[0037] All the electromechanical brake boosters described above can be produced by implementing the manufacturing method described below, however, it should be noted that the feasibility of this manufacturing method is not limited to the production of the electromechanical brake boosters described above.

[0038] In a method step S1 of the manufacturing method, an electric motor of the subsequent electromechanical brake force booster is coupled via a gear device to at least one linearly adjustable piston component of the subsequent electromechanical brake force booster, such that when the electric motor is subsequently operated, the motor force of the electric motor is transmitted via the gear device onto the at least one linearly adjustable piston component. The gear device is at least partially enclosed by a gear housing component in a method step S2. Furthermore, the at least one linearly adjustable piston component is constrained in a method step S3 to at least one tie rod such that at least the piston component that is linearly adjusted by the transmitted motor force is guided by the at least one tie rod.

[0039] The manufacturing method also comprises method steps S4 and S5. In method step S4, at least one tie rod is attached to an intermediate plate, which is manufactured as a separate component from the powertrain housing component. Additionally, the intermediate plate is attached to the powertrain housing component in method step S5. The implementation of method steps S4 and S5 results in the advantages already explained above. Method steps S1 to S5 may be implemented in any order, simultaneously or with a time overlap. [Explanation of symbols]

[0040] 10 Main brake cylinder 12 Electric motor 14 Piston Components 16 Power transmission device 18 Power transmission housing components 20 Tie rod 22 Intermediate Plate 22a Central opening 22b Another opening 24 Rivet joint 26 Screws 28 Motor housing 29 Rivet joint 30 Planet Carrier 32 Planetary gear 34 Drive gear 36 Bearing support (bearing carrier) 38 Main brake cylinder housing 38a flange 40 Cover 40a Sealing part 42 Envelope 43 Control Electronic System 44 Intermediate plate, U-profile (carrier) 44a central opening S1 Method Steps S2 Method Steps S3 Method Steps S4 Method Steps S5 Method Steps

Claims

1. 1. An electromechanical brake force booster for a vehicle braking system, comprising: An electric motor (12); At least one linearly adjustable piston component (14); a power train device (16) via which the electric motor (12) is coupled to at least one linearly adjustable piston component (14) such that, during operation of the electric motor (12), a motor force of the electric motor (12) can be transmitted via the power train device (16) onto the at least one linearly adjustable piston component (14); a powertrain housing component (18) at least partially enclosing said powertrain assembly (16); At least one tie rod (20), to which at least one linearly adjustable piston component (14) is constrained such that the piston component (14) that is linearly adjusted by the transmitted motor force is guided by the at least one tie rod (20); Equipped with In an electromechanical brake force booster, an intermediate plate (22, 44), said intermediate plate (22, 44) being manufactured as a separate component from said power train housing component (18), at least one of said tie rods (20) being attached to said intermediate plate (22, 44), and said intermediate plate (22, 44) being attached to said power train housing component (18); An electromechanical brake force booster for a vehicle braking system, comprising:

2. 2. The electromechanical brake force booster of claim 1, wherein at least a portion of the intermediate plate (22, 44) forms a motor bearing shield for the electric motor (12).

3. 3. An electromechanical brake force booster according to claim 1 or 2, wherein the intermediate plate (22, 44) is attached to the power train housing component (18) by at least one rivet connection (24), at least one screw connection, at least one welded connection and / or at least one clinch connection.

4. 4. An electromechanical brake force booster according to claim 1, wherein at least one screw (26) is attached to the housing bottom of the transmission housing component (18) on a side facing away from the intermediate plate (22, 44), by means of which the electromechanical brake force booster can be or is attached to a vehicle wall.

5. 5. The electromechanical brake force booster according to claim 1, wherein a first tie rod (20) and a second tie rod (20) as the at least one tie rod (29) are attached to the intermediate plate (22, 44), and the first tie rod (20) and the second tie rod (20) extend parallel to each other with a maximum distance of 80 mm or less.

6. 6. An electromechanical brake force booster according to claim 1, wherein at least one of the tie rods (20) has an end thereof facing away from the intermediate plate (22, 44) attached to a flange (38a) of a main brake cylinder (10), and the flange (38a) of the main brake cylinder (10) has a maximum diameter of less than or equal to 80 mm in a spatial direction oriented perpendicular to the at least one tie rod (20).

7. 7. An electromechanical brake force booster according to any one of claims 1 to 6, characterized in that a motor housing (28) at least partially enclosing the electric motor (12) is attached to the intermediate plate (22, 44).

8. 8. An electromechanical brake force booster according to claim 1, wherein a cover (40) at least partially enclosing the at least one linearly adjustable piston component (14) and the at least one tie rod (20) is attached to the intermediate plate (22, 44), and the cover (40) has a maximum diameter in a spatial direction oriented perpendicular to the at least one tie rod (20) of less than or equal to 100 mm.

9. A vehicle brake system comprising an electromechanical brake force booster according to any one of claims 1 to 8, said brake system being a brake-by-wire brake system or a servo brake system.

10. A manufacturing method for an electromechanical brake force booster for a vehicle brake system, comprising the steps of: a step (S1) of coupling an electric motor (12) of the subsequent electromechanical brake force booster via a power train device (16) to at least one linearly adjustable piston component (14) of the subsequent electromechanical brake force booster such that when the electric motor (12) is subsequently operated, a motor force of the electric motor (12) is transmitted via the power train device (16) onto the at least one linearly adjustable piston component (14); at least partially enclosing (S2) the powertrain device (16) with a powertrain housing component (18); a step (S3) of constraining at least one of the linearly adjustable piston components (14) to at least one tie rod (20) such that the piston component (14) that is linearly adjusted at least by the transmitted motor force is guided by the at least one tie rod (20); Including, In the manufacturing method, attaching (S4) at least one of the tie rods (20) to an intermediate plate (22, 44) that is manufactured as a separate component from the powertrain housing component (18); attaching (S5) the intermediate plate (22, 44) to the powertrain housing component (18); 1. A manufacturing method for an electromechanical brake force booster for a vehicle brake system, comprising:

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