Brake caliper for a disc brake of a vehicle and brake caliper housing for a brake caliper

Abstract

Brake caliper housing (1) for one brake caliper (100), comprising: a first housing part (11) having a bore (15) for guiding a piston (3) along an axial direction (A); a second housing part (12) which is arranged opposite the first housing part (12) with respect to the axial direction (A), such that a passage (10) through which a rotatable brake disc (210) can pass is defined between the first housing part (11) and the second housing part (12); and at least one spar (13, 14) extending along the axial direction (A) across the passage (10) and coupling the first and second housing parts (11, 12) to each other; wherein at least one spar (13, 14) is connected to at least one of the housing parts (11, 12) by means of a fastening bolt (4) which extends along a circumferential direction (C) which is transverse to the axial direction (A), wherein the first housing part (11) has a first spar (13) extending along the axial direction (A) towards the second housing part (12), and the second housing part (12) has a second spar (14) extending along the axial direction (A) towards the first housing part (11), wherein the first and second spars (13, 14) are arranged one after the other with respect to the circumferential direction (C), wherein the first spar (13) is detachably attached to the second housing part (12) and the second spar (14) is detachably attached to the first housing part (11), wherein the first housing part (11) has a first main section (11A) in which the bore (15) is formed, wherein the at least one spar (13, 14) projects from the first main section (11A) in the axial direction (A), and wherein the first spar (13) is formed integrally with the first main section (11A).

Description

TECHNICAL AREA

[0001] The present invention relates to a brake caliper for a disc brake of a vehicle such as an automobile, a bus, a truck, a motorcycle or the like, and a caliper housing for a brake caliper. BACKGROUND

[0002] A friction brake for a vehicle typically comprises a disc coupled to a rotating portion of the vehicle's axle that carries the wheel, and a caliper coupled to a stationary portion of the axle. The caliper includes a caliper housing and a friction unit that is guided within the carrier parallel to an axis of rotation of the disc. The friction units are located on opposite sides of the disc and are usually coupled to different sections of the caliper housing, which are connected to each other by a bridge extending radially outside the disc.

[0003] In a floating caliper disc brake, the caliper housing is guided so that it can slide axially along a carrier that is fixed to the stationary part of the axle. A piston is guided in a bore of a first housing section of the caliper housing to move the friction unit towards the disc. The other friction unit is typically fixed to a second housing section of the caliper housing. The caliper housing of a floating brake is typically a one-piece casting.

[0004] US Patent 4,072,216 A discloses a floating brake caliper having a caliper housing composed of a first and a second housing part. The first and second housing parts are arranged adjacent to each other with respect to an axial direction parallel to an axis of rotation of a brake disc.

[0005] The first and second housing parts are detachably connected to each other by bolts that extend in the axial direction and also serve as guide pins for the sliding mounting of the saddle housing.

[0006] US 3 195 687 A describes another brake caliper whose housing is divided into several housing parts, the housing parts being connected to each other by bolts extending in a circumferential direction.

[0007] Further brake calipers with multi-part housings are disclosed in US 3 134 459 A, FR 74065 E and DE 1793584 U. REVELATION OF THE INVENTION

[0008] One of the objectives of the present invention is to provide improved solutions for a caliper housing of a brake caliper for a disc brake.

[0009] The present invention provides a brake caliper housing according to claim 1, a brake caliper housing with the features of claim 7, and a brake caliper according to claim 8. Further embodiments of the present invention are the subject of the dependent claims and the following description with reference to the drawings.

[0010] According to a first aspect of the invention, a brake caliper housing for a brake caliper comprises a first housing part having a bore for guiding a piston along an axial direction, a second housing part arranged opposite the first housing part with respect to the axial direction, such that a passage through which a rotatable brake disc can pass is defined between the first housing part and the second housing part, and at least one link extending along the axial direction across the passage. The at least one link couples the first housing part and the second housing part and is detachably connected to at least one of the housing parts by means of a fastening bolt extending along a circumferential direction transverse to the axial direction.

[0011] According to a second aspect of the invention, a brake caliper for a disc brake of a vehicle comprises a brake caliper housing according to the first aspect of the invention, a first friction unit which is movably guided in the first housing part along the axial direction, a second friction unit which is coupled to the second housing part, and a piston which is guided in the bore of the first housing part and is designed to move the first friction unit along the axial direction.

[0012] One of the ideas of the present invention is to detachably couple the first and second housing parts to one another by means of a fastening element extending in the circumferential direction. At least one beam or bridge is provided, which spans the passage between the housing parts. The beam is detachably connected to at least one of the housing parts by means of a bolt fastening element, which may be, for example, a screw or the like.

[0013] When high brake pressure is applied via the piston, a bending moment acts on the caliper arm, with one bending axis being essentially parallel to the circumferential direction. Therefore, the mounting bolt extends essentially parallel to the circumferential direction, and consequently, bending moments acting on the mounting bolt are reduced. This improves the mechanical stiffness of the brake caliper housing.

[0014] A further advantage of the invention is that, due to the multi-part design of the saddle housing, the bore of the first housing part is easily accessible along the axial direction, which simplifies machining the bore and mounting the saddle. Furthermore, casting the first and second housing parts is facilitated because the geometry of the individual housing parts is less complex.

[0015] According to some embodiments, the brake caliper housing can have a first axial guide structure, e.g., in the form of guide holes extending in the axial direction, which are designed to receive a second guide structure, so that the brake caliper housing can be guided movably in the axial direction. According to another embodiment, the brake caliper can have a carrier that incorporates the second guide structure, e.g., in the form of guide pins that are received in the first guide structure of the housing. Furthermore, the carrier can have a coupling interface designed to connect the carrier to a stationary part of an axle of the vehicle, e.g., a steering knuckle. That is, the brake caliper can be a floating brake caliper.

[0016] According to the invention, at least one stanchion is formed integrally with one of the first or the second housing part and is detachably connected to the other of the first or the second housing part by means of the fastening bolt. This results in a multi-part brake caliper housing with a minimum number of parts to be assembled.

[0017] According to the invention, the first housing part has a first spar extending along the axial direction towards the second housing part, and the second housing part has a second spar extending along the axial direction towards the first housing part, wherein the first and second spars are arranged one after the other with respect to the circumferential direction, which is transverse to the axial direction, and wherein the first spar is detachably attached to the second housing part and the second spar is detachably attached to the first housing part. For example, the first spar and the second spar can be spaced apart from each other with respect to the circumferential direction or can be positioned directly adjacent to each other in the circumferential direction. It is also possible for the first and second spars to be in contact with each other.In general, providing at least one support leg per housing component further improves the mechanical stability of the brake caliper housing. This reduces the number of natural frequencies of the brake caliper housing, which helps to reduce squealing noises that can occur during braking due to vibrations in the brake caliper and disc.

[0018] The first housing part has a first main section in which the bore is formed, and the at least one spar, e.g., the first spar, can project from the first main section in the axial direction. The optional first guide structure can, for example, also be formed in the first main section. The first main section can, for example, generally have the form of a block. The at least one spar can be positioned in an outer end region of the first main section with respect to a radial direction, the radial direction extending transversely to the circumferential and axial directions.

[0019] According to some embodiments, the second spar can be attached directly to the first spar. That is, the one or more fastening bolts can extend in or through the first and second spars to couple the first and second housing sections. Additionally or alternatively, the second spar can be attached directly to the first main section. Therefore, at least one fastening bolt can also extend in or through the second spar and in or through the first main section.

[0020] According to the present invention, the first spar is formed integrally with the first main section, e.g. by a casting process.

[0021] According to some embodiments, the second housing part can have a second main section with a plate-shaped support for holding a friction unit, and at least one arm can project axially from the second main section. If the brake caliper is designed as a floating caliper, the second friction unit can be fixed to the second housing section. Providing the second main section of the second housing part with a plate-shaped support allows for more uniform support of the second friction unit compared to a conventional one-piece caliper housing design with spaced fingers for supporting the friction unit. Furthermore, the plate-shaped support is more stable than the fingers and has fewer natural frequencies. This significantly reduces squealing noises that can occur due to vibrations during braking.

[0022] According to some embodiments, the first spar can be directly attached to the second spar. That is, the one or more fastening bolts can extend in or through the first and second spars to couple the first and second housing sections. Additionally or alternatively, the first spar can be directly attached to the second main section. Therefore, at least one fastening bolt can also extend in or through the first spar and in or through the second main section.

[0023] According to some embodiments, the second spar can be formed integrally with the second main section, e.g. by a casting process.

[0024] According to some embodiments, the first housing part and the second housing part can be made of different materials, particularly different metals. For example, it may be possible to make the first housing part of gray cast iron and the second housing part of steel or aluminum. Using different materials for the first and second housing parts can further increase mechanical stability and provides more flexibility in adjusting the vibration behavior of the brake caliper housing.

[0025] According to some embodiments, at least one fastening bolt can include a damping mass, e.g., in the form of a washer, an elastic damping material filled into a cavity in the bolt's shaft, an additional element formed integrally with the bolt, or the like. This can further improve the vibration behavior of the brake caliper housing.

[0026] The features and advantages described herein with respect to one aspect of the invention are also disclosed for the other aspects and vice versa.

[0027] With regard to directions and axes, in particular directions and axes relating to the course of physical structures, the course of an axis, direction or structure “along” another axis, direction or structure is understood to mean that these, in particular the tangents resulting at a respective point of the structures, each run at an angle of less than 45 degrees, preferably less than 30 degrees and in particular preferably parallel to each other.

[0028] With regard to directions and axes, in particular directions and axes relating to the course of physical structures, the course of an axis, direction or structure "perpendicular" to another axis, direction or structure shall be understood to mean that these, in particular the tangents resulting at a respective point of the structures, each run at an angle of greater than or equal to 45 degrees, preferably greater than or equal to 60 degrees and particularly preferably perpendicular to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] For a more complete understanding of the present invention and its advantages, reference is now made to the following description in conjunction with the accompanying drawings. The invention is explained in more detail below with reference to exemplary embodiments shown in the schematic figures of the drawings. These show: Fig. 1 A schematic cross-sectional view of a disc brake with a brake caliper according to an embodiment of the invention. Fig. 2 A schematic top view of a brake caliper housing according to an embodiment of the invention. Fig. 3 A schematic top view of a brake caliper housing according to a further embodiment of the invention. Fig. 4 A schematic top view of a brake caliper housing according to a further embodiment of the invention. Fig. 5 a schematic top view of a brake caliper housing according to a further embodiment of the invention.

[0030] In the figures, identical reference symbols denote identical elements, unless otherwise specified. DETAILED DESCRIPTION OF EXAMPLES OF EXECUTION

[0031] Fig. Figure 1 schematically shows a disc brake 300 of a vehicle. The disc brake 300 can be used, for example, in a car, a bus, a truck, a motorcycle, or the like. As shown in Fig. As shown schematically in Figure 1, the brake 300 comprises a brake caliper 100 and a disc 210.

[0032] The brake disc 210 is not described in detail below. As in Fig. As shown schematically in Figure 1, the disc 210 can generally have a circular shape and comprises friction surfaces 210a, 210b positioned opposite each other. The disc 210 is designed to be coupled to a wheel of the vehicle and is rotatable about the axis of rotation A210.

[0033] The brake caliper 100 is in Fig. Figure 1 is shown in a simplified and schematic way. As shown, the brake caliper 100 has a caliper housing 1, a pair of friction pads 2A, 2B and a piston 3.

[0034] The caliper housing 1 comprises a first housing part 11, a second housing part 12, and a bridge that includes at least one strut 13, 14. A simplified top view of the brake caliper housing 1 is shown in Fig. 2 shown.

[0035] As in the Fig. 1 and Fig. As shown in Figure 2, the first housing part 11 and the second housing part 12 are positioned opposite each other or spaced apart with respect to an axial direction A, which can be parallel to the axis of rotation A210 of the disk 210. A passage 10 is formed between the first and second housing parts 11, 12, through which the disk 210 extends. The passage 10 can be limited by the bridge with respect to a radial direction R, which is transverse to the axial direction A.

[0036] As in the Fig. 1 and Fig. As shown schematically in Figure 2, the first housing part 11 comprises a first main section 11A, which can, for example, be essentially block-shaped. The first housing part 11 further has a guide structure in the form of a cylindrical bore 15 for guiding the piston 3, which is formed in the first main section 11A. A central axis A3 of the bore 15 extends in the axial direction A. As shown in Figure 2, the first housing part 11 comprises a first main section 11A, which can be formed in the first main section 11A. The first main section 11 has a guide structure in the form of a cylindrical bore 15 for guiding the piston 3, which is formed in the first main section 11A. A central axis A3 of the bore 15 extends in the axial direction A. Fig. As shown in Figure 2, the first housing part 11 comprises a first spar 13. The first spar 13 is formed integrally with the first main section 11A. As shown in Figure 2, the first housing part 11 comprises a first spar 13. The first spar 13 is formed integrally with the first main section 11A. Fig. As shown schematically in Figure 2, the first spar 13 projects from the first main section 11 along the axial direction A and extends towards the second housing part 12. That is, the first spar 13 extends across the opening 10. As shown in Figure 2, the first spar 13 projects across the opening 10. Fig. As shown schematically in Figure 1, the first spar 13 can be positioned in an upper or outer end region of the first main section 11A with respect to the radial direction R. In general, the first spar 13 can be designed as an elongated component extending along the axial direction A.

[0037] The second housing part 12 shows, as in the Fig. 1 and Fig. Figure 2 schematically shows a second main section 12A, which generally extends along the radial direction R. Furthermore, the second main section 12A can have a continuous extension in a circumferential direction C, which extends transversely to the radial direction R and the axial direction A. For example, the second main section 12A can have a plate-shaped support part 12B. As further shown in Fig. As shown in Figure 2, the second housing part 12 has a second spar 14 that projects from the second main section 12A and extends along the axial direction A towards the first housing part 11. That is, the second spar 14 also extends across the opening 10. The second spar 12 is formed integrally with the second main section 12A. As shown in Fig. As shown schematically in Figure 1, the second spar 14 can be positioned in an upper or outer end region of the second main section 12A with respect to the radial direction R. In general, the second spar 14 can be designed as an elongated component extending along the axial direction A.

[0038] The first housing part 11 and the second housing part 12 can be made of the same material or of different materials. For example, the first housing part 11 can be made of gray cast iron and the second housing part 12 can be made of steel, aluminum, or another material. Alternatively, both housing parts 11 and 12 can be made of gray cast iron.

[0039] As in Fig. As shown schematically in Figure 2, the first spar 13 and the second spar 14 are arranged one after the other with respect to the circumferential direction C; for example, the first and second spars 13, 14 can be spaced apart from each other. Generally, the spars 13, 14 can extend substantially parallel to each other. The spars 13, 14 are fastened to one another using several fastening bolts 4. The fastening bolts 4 can, for example, be screws having an external thread. However, the invention is not limited thereto. Generally, the fastening bolts 4 have a shank 40 and optionally a head 41, which is provided at one end of the shank 40. In the example of Figure 2, the first spar 13 and the second spar 14 are arranged sequentially with respect to the circumferential direction C. Fig. 2 Two screws are provided as fastening bolts 4, each screw having a shaft 40 with an external thread and a head 41.

[0040] As in Fig. As shown in Figure 2, the stiles 13 and 14 can be directly attached to each other. In this case, the bolts 4 directly connect both stiles 13 and 14. For example, the first stile 13 can have a first through-hole 131 and a first fastening hole 132, e.g., in the form of a threaded hole. As shown in Figure 2, the bolts 4 connect the first through-hole 131 and the first fastening hole 132. Fig. As shown in Figure 2 as an example, the first through-hole 131 and the first fastening hole 132 are positioned apart from each other in the axial direction A. For example, the first through-hole 131 can be positioned in an area that overlaps with the first main section 11A, and the first fastening hole 132 can be positioned in an end region of the first spar 13 that faces the second housing part 12.

[0041] The second spar 14 can have a second through hole 141 and a second fastening hole 142, e.g. in the form of a threaded hole. As in Fig. As shown in Figure 2 as an example, the second through-hole 141 and the second fastening hole 142 are positioned apart from each other in the axial direction A. For example, the second through-hole 142 can be positioned in a first end region of the second spar 14 facing the second main section 12A, and the second fastening hole 142 can be positioned in a second end region of the second spar 14 facing the first housing part 11.

[0042] As in Fig. As shown schematically in Figure 2, a bolt 4 can extend through the first through-hole 131 of the first beam 13 and be fixed in the second mounting hole 142 of the second beam 14, e.g., screwed in. In this case, the head 41 of the bolt 4 is supported by the first beam 13. Furthermore, another bolt 4 can extend through the second through-hole 141 of the second beam 14 and be fixed in the first mounting hole 132 of the first beam 14, e.g., screwed in. In this case, the head 41 of the bolt 4 is also supported by the second beam 14. Optionally, since the beams 13 are spaced apart from each other in the circumferential direction C, a spacer 44 can be provided between the beams 14. For example, the spacer 44 can be implemented as a sleeve through which the bolt 4 extends, which is fixed in the first fastening hole 132 of the first spar 13, as in Fig. 2 shown schematically. Alternatively, the first spar 13 can also be supported on the second main section 12A of the second housing part 12. Fig. Figure 2 merely shows by way of example that the second spar 14 can be supported on the first main section 11A of the first housing part 11, e.g. by a rib 11C which projects in the radial direction R from the first main section 11A.

[0043] Therefore, the first and second housing parts 11, 12 are coupled to each other via the first and second spars 13, 14, which are connected by the bolts 4. As in Fig. As can be seen in Figure 2, the bolts 4 extend in the circumferential direction C. In other words, a clamping force acts to couple the spars 13, 14 in the circumferential direction C.

[0044] It should be noted that, instead of directly coupling the spars 13, 14 to each other via bolts 4, it is also possible to attach the first spar 13 to the second housing part 12, e.g., to the second main section 12A, using a bolt 4, and to attach the second spar 14 to the first housing part 11, e.g., to the first main section 11A, using another bolt 4. In general, at least one spar 13, 14 is provided which is connected to at least one of the housing parts 11, 12 by means of a fastening bolt 4 extending along the circumferential direction C, which is transverse to the axial direction A.

[0045] As in Fig. Figure 2, shown only schematically, shows that the saddle housing 1 can be movably mounted on a support 7. The support 7 can be mounted on a steering knuckle or, more generally, on the axle of the vehicle. The saddle housing 1 can be movably guided on the support 7 along the axial direction A. For example, the support 7 can have guide pins 71 that engage with guide holes 72 formed in the first housing part 11, e.g., in the main section 11A of the first housing part 11, so that the first housing part 11 is slidably guided by the pins 71.

[0046] With renewed reference to Fig. In the example of Figure 1, the friction units 2A and 2B are positioned on opposite sides of the passage 10 and are coupled to the saddle housing 1, for example, via corresponding clamps (not shown). Generally, at least one of the friction units 2A or 2B is coupled to the saddle housing 1 in such a way that it can be moved by the piston 3 along the axial direction A. Fig. 1. A first friction unit 2A is movably guided along the axial direction A in the first housing part 11, and a second friction unit 2B is fixedly attached to the second housing part 12. For example, the first friction unit 2A can be movably guided on the first main section 11A, and the second friction unit 2A can be fixedly attached to the second main section 12A, in particular to the support part 12B of the second main section 12A.

[0047] Generally, as in Fig. Figure 1 schematically shows that each friction unit 2A, 2B comprises a carrier plate 21, which is made of a rigid material and forms a mechanically stiff support, and a friction layer 22 arranged on the carrier plate 21. The friction layer 22 is made of a friction material and is designed to be pressed against the friction surface 210a, 210b of the brake disc 210 in order to generate a frictional force for braking the disc 210.

[0048] The piston 3 is guided in the first housing part 11 such that it is movable along the axial direction A in order to move the first friction unit 2A along the axial direction A. As shown in Fig. As shown schematically in Figure 1, the piston 3 is guided in the bore 15. The piston 3 can be moved towards and away from the passage 10 by applying hydraulic pressure to a rear end 32 of the piston 3. However, the invention is not limited to this. The piston 3 can also be moved using an electric actuator, such as a motor, or by means of electromagnetic force. A contact end 31 of the piston 3 is provided to be in contact with, or to come into contact with, the first friction unit 2A, in particular with the carrier plate 21 of the first friction unit 2A.

[0049] In the example of Fig. 1 the saddle housing 1 can be attached to a carrier 7 ( Fig. 2) be mounted such that it is movable along the axial direction A, as explained above. When the piston 3 moves the first friction unit 2A into contact with the friction surface 210a of the disc 210, an axial displacement of the caliper housing 1 occurs, which moves the second friction unit 2B into contact with the oppositely located friction surface 210b of the disc 210. Consequently, a frictional force is generated between the friction units 2A, 2B and the disc 210, which brakes the disc 210. A movement of the piston 3 in the opposite direction generally causes the friction units 2A, 2B to be lifted off the friction surfaces 210a, 210b. The brake caliper 100 can therefore be a floating brake caliper.

[0050] When the friction units 2A, 2B are pressed against the friction surfaces 210a, 210b by the piston 3, a bending moment acts on the bridge 10 about an axis that is substantially parallel to the circumferential direction C. Since the mounting bolts 4 are aligned along the circumferential direction C, the bending moment does not act as a bending moment on the mounting bolts 4. Furthermore, since the saddle housing 1 is composed of the first and second housing parts 11, 12, which are detachably fastened to one another by the mounting bolts 4, the bore 15 is easily accessible for machining, and the second housing part 12 can be provided with a plate-shaped support part 12B. That is, the mechanical stiffness of the second housing part 12 is increased, and the second friction unit 2B is supported over its entire surface.This reduces the deformation of the caliper housing 1 during braking and achieves a more even pressure distribution in the second friction unit 2B, which helps to reduce squealing noises during braking.

[0051] Fig. Figure 3 shows another saddle housing 1, which extends from the saddle housing. Fig. 2 differs in the configuration of the fastening bolts 4. In Fig. In section 3, three fastening bolts 4 are provided instead of two. However, the number of fastening bolts 4 is not limited to three, but can also be two or more than three. Furthermore, the heads 41 of all three fastening bolts 4 are supported on the second spar 14.

[0052] As in Fig. As shown in Figure 3, the first spar 13 can be provided with a number of first fastening holes 132, corresponding to the number of fastening bolts 4. The second spar 14 can also be provided with a number of second through holes 141, corresponding to the number of fastening bolts 4. As shown in Fig. As shown in Figure 3 as an example, the first fastening holes 132 and the second through holes 141 can each be arranged between the first main section 11A and the second main section 12A. Each fastening bolt 4 extends through a second through hole 142 of the second spar 14 and is secured in the first fastening hole 132 of the first spar 13, e.g., screwed in. The head 132 of each bolt 4 is supported by the second spar 14. Optionally, spacers 44 can be provided between the spars 13 and 14. For example, the spacers 44 can be implemented as sleeves through which the bolts 4 extend, as shown in Figure 3. Fig. 3 shown schematically. Alternatively, the first spar 13 can also be supported on the second main section 12A of the second housing part 12 and / or the second spar 14 can be supported on the first main section 11A of the first housing part 11.

[0053] Fig. Figure 4 shows another saddle housing 1, which extends from the saddle housing. Fig. 3 differs only in that the first spar 13 has two first fastening holes 132 and one first through hole 131, which is arranged between the first fastening holes 132 with respect to the axial direction A, instead of three first fastening holes 132, and the second spar 14 has two second through holes 141 and one second fastening hole 132, which is arranged between the second through holes 141 with respect to the axial direction A. Accordingly, the fastening bolts 4 secured in the first fastening holes 132 of the first spar 13 are supported with their heads 41 on the second spar 14, and one fastening bolt 4 is secured to the second fastening hole 142 of the second spar 14 and its head 41 is supported on the first spar 13.

[0054] Although Fig. Figure 4 shows an alternating support of the heads 41 on the first and second spars 13, 14; the invention is not limited thereto. Generally, at least one spar 13, 14 is provided which couples the first and the second housing parts 11, 12 and which is connected to at least one of the housing parts 11, 12 by means of a fastening bolt 4 extending along the circumferential direction C.

[0055] The Fig. 2, Fig. 3 to Fig. Figure 4 shows an exemplary brake caliper housing 1 in which the first and second arms 13, 14 are arranged spaced apart from each other in the circumferential direction. However, the invention is not limited to this. For example, the first arm 13 and the second arm 14 can also touch or abut each other, as shown in Figure 4. Fig. Figure 5 shows schematically. In general, the first spar 13 and the second spar 14 are arranged sequentially with respect to the circumferential direction C. Regarding the arrangement of the fastening bolts 4, the following applies. Fig. 5 of the configuration Fig. 2.

[0056] Although specific embodiments have been illustrated and described herein, it is obvious to those skilled in the art that a variety of alternative and / or equivalent implementations exist. It is understood that the embodiments are merely examples and are not intended to limit the scope, applicability, or design in any way. Rather, the foregoing summary and detailed description provide those skilled in the art with a suitable plan for implementing at least one embodiment, and it is understood that various modifications to the function and arrangement of elements described in an embodiment may be made. Reference symbol list 1 carrier plate 2 friction unit 2A first friction unit 2B second friction unit 3 pistons 4 fastening bolts 7 carriers 10 rounds 11 first housing part 11A first main section of the first housing part 12 second housing part 12A second main section of the second housing part 12B Support section of the second housing part 13 first spar 14 second spar 15 bore 21 Carrier plate 22 Friction layer 31 Contact end of the piston 32 rear end of the piston 40 shaft 41 head 44 spacer 71 guide pins 72 guide holes 100 brake calipers 131 first through holes 132 first mounting holes 141 second through holes 142 second mounting holes 210 disc 210a, b Friction surfaces of the disc 300 disc brake A axial direction A3 Center axis of the bore A210 axis of rotation of the disc C Circumferential direction R radial direction

Claims

Brake caliper housing (1) for a brake caliper (100), comprising: a first housing part (11) having a bore (15) for guiding a piston (3) along an axial direction (A); a second housing part (12) arranged opposite the first housing part (12) with respect to the axial direction (A), such that a passage (10) through which a rotatable brake disc (210) can pass is defined between the first housing part (11) and the second housing part (12); and at least one spar (13, 14) extending along the axial direction (A) across the passage (10) and coupling the first and second housing parts (11, 12) to each other; wherein the at least one spar (13, 14) is connected to at least one of the housing parts (11, 12) by means of a fastening bolt (4) extending along a circumferential direction (C) that is transverse to the axial direction (A), wherein the first housing part (11) has a first spar (13),which extends along the axial direction (A) towards the second housing part (12), and the second housing part (12) has a second spar (14) extending along the axial direction (A) towards the first housing part (11), wherein the first and second spars (13, 14) are arranged sequentially with respect to the circumferential direction (C), wherein the first spar (13) is detachably attached to the second housing part (12) and the second spar (14) is detachably attached to the first housing part (11), wherein the first housing part (11) has a first main section (11A) in which the bore (15) is formed, wherein the at least one spar (13, 14) projects from the first main section (11A) in the axial direction (A), and wherein the first spar (13) is formed integrally with the first main section (11A). Brake caliper housing (1) according to claim 1, insofar as dependent on claim 2, wherein the second spar (14) is attached directly to the first spar (13) and / or directly to the first main section (11A). Brake caliper housing (1) according to claim 1 or 2, wherein the second housing part (12) has a second main section (12A) with a plate-shaped support part (12B) for holding a friction unit (2), wherein the at least one spar (13, 14) projects from the second main section (12A) in the axial direction (A). Brake caliper housing (1) according to claim 3, wherein the first spar (13) is attached directly to the second spar (14) and / or directly to the second main section (12A). Brake caliper housing (1) according to claim 3 or 4, wherein the second spar (14) is formed integrally with the second main section (12A). Brake caliper housing (1) according to one of the preceding claims, wherein the first housing part (11) and the second housing part (12) are made of different materials. Brake caliper housing (1) for a brake caliper (100), comprising: a first housing part (11) having a bore (15) for guiding a piston (3) along an axial direction (A); a second housing part (12) arranged opposite the first housing part (12) with respect to the axial direction (A), such that a passage (10) through which a rotatable brake disc (210) can pass is defined between the first housing part (11) and the second housing part (12); and at least one spar (13, 14) extending along the axial direction (A) across the passage (10) and coupling the first and second housing parts (11, 12) to each other; wherein the at least one spar (13, 14) is connected to at least one of the housing parts (11, 12) by means of a fastening bolt (4) extending along a circumferential direction (C) that is transverse to the axial direction (A), wherein the first housing part (11) has a first spar (13),which extends along the axial direction (A) towards the second housing part (12), and the second housing part (12) has a second spar (14) extending along the axial direction (A) towards the first housing part (11), wherein the first and second spars (13, 14) are arranged one after the other with respect to the circumferential direction (C), wherein the first spar (13) is detachably attached to the second housing part (12) and the second spar (14) is detachably attached to the first housing part (11), wherein the second housing part (12) has a second main section (12A) with a plate-shaped support part (12B) for holding a friction unit (2), wherein the at least one spar (13, 14) projects from the second main section (12A) in the axial direction (A), wherein the second spar (14) is formed integrally with the second main section (12A). is., Brake caliper (200) for a disc brake (300) of a vehicle, comprising: a brake caliper housing (1) according to one of claims 1 to 6 or according to claim 7; a first friction unit (2A) which is movably guided in the first housing part (11) along the axial direction; a second friction unit (2B) which is coupled to the second housing part (12); and a piston (3) which is guided in the bore (15) of the first housing part (11) and is designed to move the first friction unit (2A) along the axial direction (A).

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