Brake Caliper for Disk Brake

Abstract

The present invention relates to a brake caliper for a disc brake (1), including: a caliper body (2) configured to straddle a brake disc (3) for applying braking force to a vehicle. The brake disc (3) defines an axial direction (AA) oriented along or parallel to an axis of rotation (XX) of the brake disc (3), a radial direction (RR) perpendicular to the axial direction (AA), a circumferential direction (CC) perpendicular to the axial direction (AA) and the radial direction (RR), and a tangential direction (TT) locally perpendicular to the axial direction (AA) and the radial direction (RR) and tangent to the circumferential direction. The caliper body (2) includes at least one thrust device housing (4) containing a thrust device (5) configured to bias at least one brake pad (6) adjacent to the at least one brake pad (6); braking surfaces (7, 8) of the brake disc (3); and the thrust device (5) operably connected to a translating screw nut (9). The translational screw nut (9) is operably connected to the worm (10), which is operably connected to a gearbox (11). The worm (10) is rotatably supported by a screw thrust bearing (12) configured to rotatably support the worm (10) and apply an axial reaction force, i.e., a direct reaction force, to the worm (10) primarily along the axial direction (AA). At least a portion of the pressure gearbox (11) disposed near and operably connected to the worm (10) applies a radial reaction force, i.e., a direct reaction force, generally along the radial direction (RR), to the reduction gear (11) and thus to the at least one portion of the reduction gear (11). Here, the screw thrust bearing and the gearbox thrust bearing are the same thrust bearing (12).

Description

Technical Field

[0001] The present invention relates to a disc brake caliper and a disc brake including the caliper.

[0002] Hereinafter, the disc brake caliper and the disc brake assembly will be described with reference to the rotation axis of the disc itself indicated by the reference sign X-X that defines the axial direction. The axial direction means any direction A-A directed parallel to the rotation axis of the brake disc. Further, the radial direction means any direction orthogonal to the rotation axis X-X and incident thereon. Also, the circumferential direction C-C means a circumference orthogonal to the axial direction and the radial direction.

[0003] In addition, the tangential direction T-T means a direction that is temporally orthogonal to the axial direction A-A and the radial direction R-R.

Background Art

[0004] In vehicles, particularly disc brakes, the brake caliper is arranged across the outer peripheral edge of the brake disc. The brake caliper typically includes a body having two elongated elements called side portions that are arranged to face both brake surfaces of the disc. There are friction pads between each side portion of the caliper and the brake surface of the brake disc. At least one of the side portions of the caliper has a cylinder configured to accommodate a piston and is actuated by any suitable known method (e.g., hydraulic or electromechanical piston) to apply a thrust action to the pads, bring them into contact with the brake surface of the disc, and apply a braking action to the vehicle.

[0005] The brake caliper is typically constrained to a support structure that remains fixed to the vehicle, such as a spindle of a vehicle suspension.

[0006] In a typical arrangement, one of the two side portions has two or more attachment portions of the caliper body to a support structure (for example, a support structure providing through holes), and these portions are configured to receive screws for fixing the caliper, which are received in screw holes provided at both ends of the caliper support.

[0007] Such a side portion is called an attachment side portion or a vehicle side elongated element.

[0008] The other portion is called a non-attachment side portion or a wheel side elongated element.

[0009] In a typical caliper body structure, the side portions facing the brake surfaces of the disc are connected to each other by an element like a bridge arranged across the disc, called a bridge.

[0010] As described above, in a disc brake caliper, due to the action of at least one piston, the brake pads on both sides are pressed against the brake surfaces on both sides of the brake band by the associated brake disc.

[0011] This piston is usually housed in a cylinder of the caliper body and is actuated by brake fluid pressurized by a brake pump (usually the pedal of an automobile and the lever of a motorcycle).

[0012] There are also known brake calipers in which one or more pistons are electromechanically driven, for example, by the rotation of a worm housed in a piston body and rotated by an electric motor or more generally by a ratio motor.

[0013] Such a solution is known from US Patent No. 6,607,059 B1 by SKF Engineering and Research Center B.V. In one embodiment, this document discloses a servo motor connected to a ball screw disposed inside a piston body. The worm is rotationally supported by a first thrust bearing disposed therein, and the transmission shaft is connected thereto to a planetary gear disk of a planetary gear mechanism disposed on top of the electric motor. This planetary gear device is supported by a second thrust bearing at the end of the drive shaft on the opposite side of the piston.

[0014] Therefore, this solution is very cumbersome, especially because it extends quite a bit axially.

[0015] A solution to this problem is disclosed in US Patent No. 7,021,415 B2 by Stoneridge Control Devices, Inc. and also in International Publication WO2015151052 by Brembo Brakes S.p.A. These documents disclose an electric brake system and an actuator. The actuator includes a motor with a motor shaft and a gear train coupled to the motor shaft, the gears having at least one mechanical output from the actuator. The gear train includes a gear coupled to a drive shaft, a driven gear coupled to a driven gear, and a planetary gear set coupled to a driven wheel. These documents describe a configuration for arranging the gear train as widely as possible in the circumferential direction to reduce the axial installation area of the assembly.

[0016] Other such solutions are known from US Patent No. 8,051,957 B2, International Publication WO2011076299 A1, International Publication WO2015151052 A1, International Publication WO2016005867 A2, US Patent Application Publication No. 2005 / 03496 A1, and US Patent Application Publication No. 2008 / 271553 A1.

[0017] However, in all of these solutions, since the piston assembly, the worm nut screw, and the gear box are mainly arranged side by side, the axial load on the caliper cannot be reduced.

[0018] Therefore, there is still a strong need for a caliper of a type with a small axial dimension, equipped with a thrust device that operates via a screw nut screw.

[0019] This requirement is strongly felt not only in motorcycles, where the axial dimension of the caliper is a major constraint on the desired reduction in the size of the vehicle itself, but especially on its maneuverability.

Summary of the Invention

[0020] These and other objects are achieved by the caliper according to claim 1 and the brake according to claim 10.

[0021] Some advantageous embodiments are the subject of the dependent claims.

[0022] This solution can significantly reduce the axial dimension of the caliper by integrating the components of the caliper.

[0023] According to the proposed solution, the components of the gear box are at least partially key-coupled with the components of the thrust device, and in particular axially, the size of the assembly can be significantly reduced.

[0024] Tests performed with the solution have revealed that the achieved reduction in the axial dimension was not obtained in any of the previously known solutions.

[0025] Rather, due to the needs revealed by these known solutions, that is, to propose a modular solution that allows the gearbox to be easily and simply separated from the caliper body, the known solutions propose an increasingly cumbersome assembly in the axial direction due to the sophisticated desire to separate the components of the thrust device from the components of the gearbox or the reduction motor.

[0026] In particular, the design of the worm and gearbox support is illustrated in order to eliminate the motion transmission component from the gearbox to the worm for directly transmitting motion from the gearbox to the worm using a worm support bearing.

[0027] Furthermore, thanks to the proposed solution, it is possible to reduce the number of components forming the caliper. In particular, in this proposed solution, the support bearing of the worm also incorporates the function of the support bearing of the gearbox or the proximal part of the gearbox, and it is possible to further eliminate the number of components that enable the attachment of the gearbox support bearing.

[0028] These solutions can also greatly simplify the assembly stage of the caliper.

Brief Description of the Drawings

[0029] Further features and advantages of the present invention will become apparent from the following description of its preferred embodiments, given by way of non-limiting example, with reference to the accompanying drawings.

[0030] Figure 1 is a circumferential view of a brake caliper according to the present invention.

[0031] Figure 2 shows a cross-section along the radial axial plane of the caliper of Figure 1.

[0032] Figure 3 shows an enlarged detail of the cross-section of Figure 2, where the support bearing of the worm and the end of the gearbox are highlighted.

[0033] Figure 4 shows a cross-sectional view of the caliper of FIG. 1 taken along line IV-IV of FIG. 1.

[0034] Figure 5 is an enlarged view of the details of FIG. 4, with the worm support bearing and the end of the gear box highlighted. Description of the Preferred Embodiment

[0035] According to a general embodiment, the brake caliper of the disc brake 1 comprises a caliper body 2 configured to be arranged across the brake disc 3 to apply a braking action to the vehicle.

[0036] The brake disc 3 defines an axial direction A-A directed along or parallel to the rotation axis X-X of the brake disc 3, a radial direction R-R orthogonal to the axial direction A-A, a circumferential direction C-C orthogonal to the axial direction A-A and the radial direction R-R, and a tangential direction T-T locally orthogonal to the axial direction A-A and the radial direction R-R and in contact with the circumferential direction C-C.

[0037] The caliper body 2 includes at least one thrust device housing 4 that houses a thrust device 5 (thrust device) configured to bias at least one brake pad 6 to bring the at least one brake pad 6 into contact with the brake surfaces 7, 8 of the brake disc 3.

[0038] The thrust device 5 is operably connected to a translation screw nut 9 and is operably connected to a worm 10. The translation screw nut 9 is operably connected to the worm 10. The worm 10 is operably connected to a speed reducer or gear box indicated by 11.

[0039] The worm 10 is rotatably supported by a screw thrust bearing 12 configured to support the worm 10 in a rotatable manner and apply an axial reaction force, that is, a direct reaction mainly along the axial direction A-A, to the worm 10.

[0040] At least a part of the pressure gear box 11 disposed near the worm 10 and operably connected is rotatably supported by at least one gear box thrust bearing 12. The gear box thrust bearing 12 supports at least one part of the reduction gear 11 in a rotatable manner and applies a radial reaction force mainly along the radial direction R-R to at least one part of the reduction gear 11.

[0041] Advantageously, the screw thrust bearing and the gear box thrust bearing are the same thrust bearing 12. In other words, the screw thrust bearing and the gear box thrust bearing are the same thrust bearing 12.

[0042] For example, by providing a single thrust bearing 12 for performing the functions of both the worm support bearing and the gear box support bearing, the need to simplify the structure of this assembly and reduce its axial dimension is solved.

[0043] According to a more general embodiment, the brake caliper of the disc brake 1 includes a caliper body 2 configured to be disposed across the brake disc 3 to apply a braking action to the vehicle.

[0044] The brake disc 3 defines an axial direction A-A directed along or parallel to the rotation axis X-X of the brake disc 3, a radial direction R-R orthogonal to the axial direction A-A, a circumferential direction C-C orthogonal to both the axial direction A-A and the radial direction R-R, and a tangential direction T-T locally orthogonal to the axial direction A-A and the radial direction R-R and in contact with the circumferential direction C-C.

[0045] The caliper body 2 includes at least one thrust device housing 4 that houses a thrust device 5 configured to bias at least one brake pad 6 to bring the at least one brake pad 6 into contact with the brake surfaces 7, 8 of the brake disk.

[0046] The thrust device 5 is operably connected to a translation screw nut 9 that is operably connected to a worm 10. The translation screw nut 9 is operably connected to the worm 10. The worm 10 is operably connected to a gear box 11.

[0047] The worm 10 is rotatably supported by a screw thrust bearing 12 configured to support the worm 10 in a rotatable manner and apply an axial reaction force, i.e., a direct reaction mainly along the axial direction A - A, to the worm 10.

[0048] At least a part of the pressure gear box 11 disposed near the worm 10 and operably connected to the worm 10 is rotatably supported by at least one gear box thrust bearing 12. The gear box thrust bearing 12 is configured to support at least one part of the reduction gear 11 in a rotatable manner and apply a radial reaction force (i.e., a direct reaction mainly along the radial direction RR) to the at least one part of the reduction gear 11.

[0049] The thrust bearing 12 includes at least one inner bearing ring or radially inner swivel ring 14, 15.

[0050] The gear box 11 includes a planetary gear 20.

[0051] The planetary gear 20 includes a fixed gear or internally toothed body 17 that cooperates with at least one planetary gear 18, and the at least one planetary gear 18 is rotatably supported around at least one planetary gear pin 21.

[0052] The at least one planetary gear pin 21 is operably connected to the at least one radially inner swivel ring 15, and the action of the gearbox 11 is transmitted to the worm 10 by the at least one radially inner swivel ring 15.

[0053] According to one embodiment, the worm 10 is rotatably supported only by the thrust bearing 12.

[0054] According to one embodiment, the thrust bearing 12 is an inclined bearing configured to support both a load directed along the axial direction A-A and a load directed along the radial direction R-R.

[0055] According to one embodiment, the worm 10 is a recirculating ball worm.

[0056] According to one embodiment, the thrust bearing 12 includes at least one radially inner swivel ring 14, 15.

[0057] According to one embodiment, the gearbox 11 includes at least one planetary gear 20.

[0058] The planetary gear 20 includes a fixed gear or an internally toothed body 17 that cooperates with at least one planetary gear 18, and the at least one planetary gear 18 is rotatably supported around at least one planetary gear pin 21.

[0059] The at least one planetary gear pin 21 is operably connected to the at least one radially inner swivel ring 15.

[0060] According to one embodiment, the at least one radially inner swivel ring 15 includes at least a pin housing 23, and the at least one pin housing 23 receives the at least one planetary gear pin 21.

[0061] According to one embodiment, the at least one radially inner swivel ring 14, 15 is connected to the worm 10.

[0062] According to one embodiment, the worm 10 comprises a screw shank 22. The at least one radially inner swivel ring 14, 15 is connected to the screw shank 22, and the at least one radially inner swivel ring 14, 15 transmits the action of the gearbox 11 to the worm 10.

[0063] According to one embodiment, the worm 10 comprises a screw shank 22. The at least one radially inner swivel ring 14, 15 is keyed to the screw shank 22, and the action of the gearbox 11 is transmitted to the worm 10 via the at least one radially inner swivel ring 14, 15.

[0064] According to one embodiment, the gearbox 11 includes at least one planetary gear 20.

[0065] The planetary gear 20 includes a fixed gear or an internally toothed body 17 that cooperates with at least one planetary gear 18, and the at least one planetary gear 18 is rotatably supported around at least one planetary gear pin 21.

[0066] The at least one planetary gear pin 21 is supported by a planetary carrier disk.

[0067] The at least one radially inner swivel ring 15 is integral with the planetary carrier disk.

[0068] According to one embodiment, the thrust bearing 12 comprises at least one outer bearing ring or radially outer swivel ring 13.

[0069] According to one embodiment, the radially outer swivel ring 13 is connected to a first outer swivel ring housing 16 which is provided at least partially on the caliper body 2.

[0070] According to one embodiment, the gearbox 11 comprises a fixed gear or internal tooth body 17 which cooperates with a rotating gear or planetary gear 18. The fixed gear or internal tooth body 17 is connected to the caliper body 2. The radially outer swivel ring 13 is connected to a second outer swivel ring housing 19 which is provided at least partially on the fixed gear or internally toothed body 17.

[0071] According to one embodiment, the thrust bearing 12 includes at least one radially inner swivel ring 14, 15.

[0072] At least one radially inner swivel ring 14, 15 is integral with the worm 10.

[0073] According to one embodiment, the worm 10 comprises a screw shank 22. The at least one radially inner swivel ring 14, 15 is integral with the screw shank 22, and the action of the gearbox 11 is transmitted to the worm 10 via the at least one radially inner swivel ring 14, 15.

[0074] According to one embodiment, the at least one radially inner swivel ring 14, 15 has a first inner swivel ring 14 and a second inner swivel ring 15 arranged side by side with each other.

[0075] According to one embodiment, the second inner swivel ring 15 is operably connected to the gearbox 11.

[0076] According to one embodiment, the gearbox 11 includes at least one planetary gear 20.

[0077] The second inner swivel ring 15 includes at least one pin housing 23, and the at least one pin housing 23 receives at least one planetary gear pin 21 that rotatably supports at least one planetary gear 18 of the planetary gear 20.

[0078] According to one embodiment, the gearbox 11 is part of a ratio motor 24 that includes an electric motor 25 operably connected to the gearbox 11.

[0079] According to one embodiment, the brake caliper 1 is an electrically actuated caliper.

[0080] According to one embodiment, the thrust device housing 4 has an insertion opening 26 that opens towards the gearbox 11 and enables insertion of the thrust device 5 and / or the translation nut 9 and the worm 10 into the pin device housing 4.

[0081] According to one embodiment, the thrust device 5 includes an internal chamber 28 of the thrust device.

[0082] The internal chamber 28 of the thrust device houses the translation screw 9 and the worm 10.

[0083] According to one embodiment, a support ring 29 is inserted between the thrust device 5 and the translation screw 9. Here, the translation nut 9 rests on the stationary ring 29 so as to include the clearance between the thrust device 5 and the translation nut 9.

[0084] According to one embodiment, the translation nut 9 includes at least one snap - coupling device 30.

[0085] According to one embodiment, the snap - coupling device 30 connects the translation nut screw 9 by snapping it to the thrust device 5.

[0086] According to one embodiment, the worm 10 includes a screw thrust head 27 configured to cooperate directly or indirectly with the thrust device 5.

[0087] According to one embodiment, a limit stop disk 31 is provided intervening between the thrust device 5 and the screw thrust head 27.

[0088] According to one embodiment, the limit stop disk 31 is shaped as a spherical cap 32.

[0089] The present invention further relates to a disk brake 33 related to the brake disk 3, including a caliper according to any one of the above embodiments.

[0090] Those skilled in the art can make many changes and configurations to the above embodiments, or replace them with other elements that are functionally equivalent to meet accidental needs without departing from the scope of the appended claims.

[0091] According to one embodiment, the thrust device 5 includes a holding device 34 that can prevent the rotation of the thrust device 5 within the housing of the thrust device 4.

[0092] According to one embodiment, the brake caliper 1 includes a caliper body 2 configured to straddle the disk 3, and the caliper body 2

[0093] a first elongated portion 105 configured to face the first brake surface 106 of the brake disk 3, and

[0094] a second elongated portion 107 configured to face the second brake surface 108 of the brake disk 3, which is on the opposite side of the first elongated portion 105 and on the opposite side of the first brake surface 106, and

[0095] The first elongated portion 105 and the second elongated portion 107 have at least one bridge 109 connecting them and arranged across the disk 3.

[0096] The brake caliper 1 further comprises at least one pair of opposing brake pads including a first brake pad 110 and a second brake pad 120.

[0097] Each brake pad 110, 120 of the at least one pair of opposing brake pads comprises the following.

[0098] Friction materials 111, 121, and

[0099] Support plates 112, 122 for supporting the friction materials 111, 121.

[0100] Each support plate 112, 122 of each brake pad 110, 120 comprises plate backs 113, 223 facing the respective elongated portions of the elongated portions 105, 107 of the caliper body 2.

[0101] The brake caliper 1 further comprises

[0102] At least one thrust device 5 configured to apply a thrust action to the plate back 113 so as to be adjacent to the first brake pad 110 of the pair of brake pads with respect to the brake surface 106 of the opposing brake surfaces 106, 108 of the disk 3.

[0103] At least one detection device 115 configured to detect a bias force directed in the axial direction X-X.

[0104] The detection device 115 of the brake caliper 1 is directly or indirectly inserted between the plate back 123 of the second brake pad 120 of the pair of brake pads and the elongated portion 107 of the caliper body 2. This avoids providing the thrust device 5 inserted between the detection device 115 and the plate back 123 of the second brake pad 120 of the pair of brake pads.

Explanation of Signs

[0105] 1: Brake caliper for disc brake 2: Caliper body 3: Brake disc 4: Thrust device housing 5: Thrust device (e.g., piston) 6: Brake pad 7: Brake surface 8: Brake surface 9: Translation nut screw 10: Worm (e.g., recirculating ball screw) 11: Reducer or gearbox 12: Thrust bearing 13: Radially outer swivel ring or outer bearing ring 14: First radially inner swivel ring or first inner bearing ring 15: Planet gear pin or second radially inner swivel ring supporting the second inner bearing ring 17: Fixed gear or internally toothed body or ring gear 18: Planet gear 19: Second outer swivel ring housing 20: Planet gear 21: Planet gear pin 22: Screw shank 23: Pin housing 24: Ratio motor 25: Electric motor 26: Insertion opening 27: Screw thrust head 28: Thrust device internal chamber 29: X-X Support Ring / Brake Disk Rotation Axis 30: Snap Coupling Device 31: Limit Stop Disk 32: Spherical Cap 33: Disk Brake 34: Holding Device (e.g., Anti-Rotation Device) 105: First Elongated Portion 106: First Brake Surface 107: Second Elongated Portion 108: Second Brake Surface 109: At Least One Bridge 110: First Brake Pad 120: Second Brake Pad 111: Friction Material 121: Friction Material 112: Support Plate 122: Support Plate 113: Plate Bag 123: Plate Bag 115: Axial Bias Detection Device A-A: Axial Direction Parallel to the Rotation Axis R-R: Radial Direction Orthogonal to the Rotation Axis C-C: Circumferential Direction Orthogonal to the Axial and Radial Directions T-T: Tangential Direction Orthogonal to the Radial and Axial Directions in Time

Claims

1. A brake caliper (1) for a disc brake, comprising a caliper body (2) configured to apply a braking action to a vehicle across a brake disc (3), wherein the brake disc (3) has an axial direction (A - A) oriented along or parallel to the axis of rotation (X - X) of the brake disc (3), a radial direction (R - R) orthogonal to the axial direction (A - A), a circumferential direction (C - C) orthogonal to both the axial direction (A - A) and the radial direction (R - R), a tangential direction (T - T) locally orthogonal to the axial direction (A - A) and the radial direction (R - R) and tangential to the circumferential direction, the caliper body (2) comprising at least one thrust device housing (4) that houses a thrust device (5) configured to bias at least one brake pad (6) to contact a brake surface (7, 8) of the brake disc (3), the thrust device (5) being operatively connected to a translational screw nut (9) that is functionally connected to a worm (10), the translational screw nut (9) being operatively connected to the worm (10), the worm (10) being operatively connected to a gearbox (11), the worm (10) being rotatably supported by a screw thrust bearing configured to support the worm (10) in a rotatable manner and apply an axial reaction force, i.e., a direct reaction mainly along the axial direction, at least a part of the gearbox (11) disposed near the worm (10) and operatively connected to the worm being rotatably supported by at least one gearbox thrust bearing, the gearbox thrust bearing being configured to rotatably support at least a part of the gearbox (11) and apply a reaction force in the radial direction (R - R), i.e., a direct reaction, along the radial direction (R - R) to at least a part of the gearbox (11), the screw thrust bearing and the gearbox thrust bearing being the same thrust bearing (12), the gearbox (11) comprising a planetary gear mechanism (20). The planetary gear mechanism (20) includes a fixed gear or an internally toothed body (17) cooperating with at least one planetary gear (18), The at least one planetary gear (18) is rotatably supported about at least one planetary gear pin, At least one planetary gear pin (21) is supported by a planetary carrier disk, A brake caliper (1), wherein at least one radially inner swivel ring (14, 15) is integral with the planetary carrier disk.

2. The worm (10) is rotatably supported only by the thrust bearing (12), and / or The thrust bearing (12) is an inclined bearing configured to support both a load directed in the axial direction (A - A) and a load directed in the radial direction (R - R), and / or The caliper according to claim 1, wherein the worm (10) is a recirculating ball worm.

3. The thrust bearing (12) includes at least one radially inner swivel ring (14, 15), and / or The at least one planetary gear pin (21) is operably connected to the at least one radially inner swivel ring (14, 15), and / or The at least one radially inner swivel ring (14, 15) includes at least a pin housing (23), and the at least one pin housing (23) receives the at least one planetary gear pin (21), and / or The at least one radially inner swivel ring (14, 15) is connected to the worm (10), and / or The worm (10) includes a screw shank (22), and the at least one radially inner swivel ring (14, 15) is connected to the screw shank (22) so that the action of the gearbox (11) is transmitted to the worm (10) by the at least one radially inner swivel ring (14, 15), and / or The caliper according to claim 1 or 2, wherein the worm (10) includes a screw shank (22), and the at least one radially inner swivel ring (14, 15) is keyed to the screw shank (22) so that the operation of the gearbox (11) is transmitted to the worm (10) via the at least one radially inner swivel ring (14, 15).

4. The at least one radially inner swivel ring (14, 15) is integral with the worm (10) and / or The at least one radially inner swivel ring (14, 15) is integral with the screw shank (22) such that the action of the gearbox (11) is transmitted to the worm (10) by the at least one radial inner swivel and / or The at least one radially inner swivel ring (14, 15) has a first inner swivel ring (14) and a second inner swivel ring (15) arranged side by side with each other, The second inner swivel ring (15) is operatively connected to the gearbox (11) and / or The second inner swivel ring (15) includes at least one pin housing (23), and the at least one pin housing (23) receives at least one planet gear pin (21) that rotatably supports the at least one planet gear (18) of the planetary gear mechanism (20). The caliper according to claim 3.

5. The gearbox (11) is part of a ratio motor (24) that includes an electric motor (25) operatively connected to the gearbox (11) and / or The brake caliper (1) is an electrically actuated caliper. The caliper according to any one of claims 1 to 4.

6. The thrust device housing (4) has an insertion opening (26), The insertion opening (26) opens towards the gearbox (11) and enables insertion of the thrust device (5) and / or the translational screw nut (9) into the thrust device housing (4) of the worm (10) and / or The thrust device (5) has a thrust device inner chamber (28), The thrust device inner chamber (28) houses the translational screw nut (9) and the worm (10). The caliper according to any one of claims 1 to 5.

7. A support ring (29) is inserted between the thrust device (5) and the translational screw nut (9), The translational screw nut (9) rests on the support ring (29) and / or The translational screw nut (9) includes at least one snap coupling device (30), The snap coupling device (30) connects by snapping the translational screw nut (9) onto the thrust device (5) and / or the worm (10) comprises a screw thrust head (27) configured to cooperate directly or indirectly with the thrust device (5), a limit stop disk (31) is inserted between the thrust device (5) and the screw thrust head (27), the limit stop disk (31) is in the form of a spherical cap (32), a caliper according to any one of claims 1 to 6.

8. A disk brake (33) comprising a caliper according to any one of claims 1 to 7 and a brake disk (3).

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