bicycle rim brake

Abstract

Bicycle rim brake (10, 210), including: a first brake arm (12) which is designed to pivot about a first pivot axis (A1) and which includes a first assembly section (20) on which a first friction element (16) is to be mounted, and a first driver (24) which is arranged spaced apart from the first assembly section (20); a second brake arm (14) which is designed to pivot about a second pivot axis (A2) which is different from the first pivot axis (A1), and which includes a second assembly section (22) to which a second friction element (18) is to be mounted, and a second driver (26) which is arranged at a distance from the second assembly section (22); and a pivotable cam element (28) configured to pivot about a third pivot axis (A3) which differs from the first pivot axis (A1) and the second pivot axis (A2) in order to guide the first driver (24) and the second driver (26) such that the first brake arm (12) pivots about the first pivot axis (A1) and the second brake arm (14) pivots about the second pivot axis (A2), where the third pivot axis (A3) is parallel to the first pivot axis (A1) and parallel to the second pivot axis (A2), and wherein the pivotable cam element (28) comprises a first cam surface (28a) configured to guide the first driver (24) and a second cam surface (28b) configured to guide the second driver (26).

Description

AREA OF INVENTION

[0001] The present invention relates to a bicycle rim brake. STATE OF THE ART

[0002] Cycling is becoming an increasingly popular form of recreation as well as a means of transportation. Furthermore, cycling has become a very popular competitive sport for both amateurs and professionals. Whether the bicycle is used for recreation, transportation, or competition, the bicycle industry is constantly improving the various components of the bicycle. One bicycle component that has recently undergone extensive redesign is the rim brake.

[0003] Bicycle rim brakes are known from the state of the art in US 2014 / 0 262 631 A1, EP 2 551 178 A1, DE 38 25 394 A1 and DE 10 2011 007 652 A1.

[0004] US Patent 2014 / 0262631A1 discloses a bicycle rim brake with a first brake arm, a second brake arm, and a pivoting drive element. The first brake arm is configured to pivot about a first pivot axis. The first brake arm includes a first mounting section on which a first friction element is to be mounted and a first drive lug spaced apart from the first mounting section. The second brake arm is configured to pivot about a second pivot axis, which differs from the first pivot axis. The second brake arm includes a second mounting section on which a second friction element is to be mounted and a second drive lug spaced apart from the second mounting section. The pivoting drive element is configured to pivot about a third pivot axis, such that the first brake arm pivots about the first pivot axis and the second brake arm pivots about the second pivot axis.The drive element has two surfaces, each designed to push a driver outwards.

[0005] The object of the present invention is to reduce the size of the bicycle rim brake and to expand the design possibilities of the bicycle rim brake compared to a comparable rim brake.

[0006] To solve the problem, a bicycle rim brake with the features of independent claim 1 is proposed. Preferred embodiments are defined in dependent claims 2 to 18.

[0007] Furthermore, to solve the problem, a bicycle rim brake with the features of independent claim 19 is proposed. SUMMARY OF THE INVENTION

[0008] According to a first aspect of the present invention, a bicycle rim brake comprises a first brake arm, a second brake arm, and a pivotable cam element. The first brake arm is configured to pivot about a first pivot axis. The first brake arm comprises a first mounting section on which a first friction element is to be mounted, and a first drive element spaced apart from the first mounting section. The second brake arm is configured to pivot about a second pivot axis, which differs from the first pivot axis. The second brake arm comprises a second mounting section on which a second friction element is to be mounted, and a second drive element spaced apart from the second mounting section.The pivoting cam element is designed to pivot about a third pivot axis, distinct from the first and second pivot axes, to guide the first and second drivers such that the first brake arm pivots about the first pivot axis and the second brake arm pivots about the second pivot axis. Furthermore, the third pivot axis is parallel to both the first and second pivot axes. The pivoting cam element also comprises a first cam surface designed to guide the first driver and a second cam surface designed to guide the second driver.

[0009] In the bicycle rim brake according to the first aspect, the pivoting cam element is designed to pivot about a third pivot axis, which differs from the first and second pivot axes. This third pivot axis guides the first and second brake arms, causing the first brake arm to pivot about the first pivot axis and the second brake arm to pivot about the second pivot axis. Thus, the pivoting motion of the cam element can be converted into the pivoting motion of the first and second brake arms. Consequently, it is possible to reduce the size of the bicycle rim brake and / or expand its design possibilities compared to, for example, a similar rim brake that incorporates a structure designed to convert the linear motion of a cam element into pivoting motions of brake arms.

[0010] Furthermore, it is possible to reduce the size of the pivoting cam element by modifying the first and second cam surfaces. This can further reduce the size of the bicycle rim brake and / or further expand the design possibilities of the bicycle rim brake.

[0011] According to a preferred embodiment, the bicycle rim brake is designed such that the first cam surface is provided on a side opposite the second cam surface relative to the third pivot axis.

[0012] In this aspect of the bicycle rim brake, both sides of the pivoting cam element can be used as cam surfaces, allowing the size of the pivoting cam element to be further reduced. Accordingly, it is possible to further reduce the size of the bicycle rim brake and / or further expand its design possibilities.

[0013] According to a preferred embodiment, the bicycle rim brake is designed such that the first cam surface has a profile that differs from the profile of the second cam surface.

[0014] With this aspect of the bicycle rim brake, it is possible to position the third pivot axis in different locations relative to the first and second drive lugs. Accordingly, it is possible to further reduce the size of the bicycle rim brake and / or further expand its design possibilities.

[0015] According to a preferred embodiment, the bicycle rim brake is designed such that the pivotable cam element is provided between the first driver and the second driver.

[0016] With this aspect of bicycle rim brakes, it is possible to utilize the space between the first and second drive lugs. Accordingly, it is possible to further reduce the size of the bicycle rim brake and / or further expand its design possibilities.

[0017] According to a preferred embodiment, the bicycle rim brake is designed such that the third pivot axis is provided between the first driver and the second driver.

[0018] With this aspect of bicycle rim brakes, it is possible to utilize the space between the first and second drive lugs. Accordingly, it is possible to further reduce the size of the bicycle rim brake and / or further expand its design possibilities.

[0019] According to a preferred embodiment, the bicycle rim brake is designed such that the third pivot axis is provided in a region defined between the first pivot axis and the second pivot axis.

[0020] With this aspect of bicycle rim brakes, it is possible to utilize the area defined between the first pivot axis and the second pivot axis. Accordingly, it is possible to further reduce the size of the bicycle rim brake and / or further expand its design possibilities.

[0021] According to a preferred embodiment, the bicycle rim brake is designed such that the first driver is rotatable about a first axis of rotation and the second driver is rotatable about a second axis of rotation.

[0022] In the case of a bicycle rim brake, because the first drive pin is rotatable around the first axis of rotation, it is possible to achieve smooth relative movement between the first drive pin and the pivoting cam element. Since the second drive pin is rotatable around the second axis of rotation, it is also possible to achieve smooth relative movement between the second drive pin and the pivoting cam element. This can result in smooth braking action of the bicycle rim brake.

[0023] In a preferred embodiment, the bicycle rim brake is designed such that the first drive element is located on the opposite side of the first mounting section relative to the first pivot axis. The second drive element is located on the opposite side of the second mounting section relative to the second pivot axis.

[0024] With this aspect of bicycle rim brakes, it is possible to utilize a gap around the opposite side of the first mounting section in the first brake arm. Similarly, it is possible to utilize a gap around the opposite side of the second mounting section in the second brake arm. Accordingly, it is possible to further reduce the size of the bicycle rim brake and / or further expand its design possibilities.

[0025] According to a preferred embodiment, the bicycle rim brake further comprises a base element on which the first brake arm is pivotably mounted about the first pivot axis, and on which the second brake arm is pivotably mounted about the second pivot axis.

[0026] From this perspective, it is possible to treat the bicycle rim brake as a single component.

[0027] According to a preferred embodiment, the bicycle rim brake further comprises an intermediate element via which an actuating force is transmitted to the pivotable cam element.

[0028] In the case of the bicycle rim brake, according to this aspect, it is possible to transfer the actuating force to the pivoting cam element via a simple structure.

[0029] According to a preferred embodiment, the bicycle rim brake is designed such that the intermediate element is designed to be coupled to the pivotable cam element in order to pivot together with the pivotable cam element about the third pivot axis.

[0030] In the case of the bicycle rim brake, according to this aspect, it is possible to transfer the actuating force to the pivoting cam element by pivoting the intermediate element.

[0031] According to a preferred embodiment, the bicycle rim is designed such that the intermediate element includes a cable attachment section to which a steering cable can be attached.

[0032] With this aspect of the bicycle rim brake, it is possible to operate the bicycle rim brake via the steering cable.

[0033] According to a preferred embodiment, the bicycle rim brake further comprises a hydraulic cylinder, which includes a cylinder bore, and a piston, which is movably provided in the cylinder bore. The piston is designed to be coupled to the intermediate element.

[0034] From this perspective, with bicycle rim brakes, it is possible to operate the bicycle rim brake via a hydraulic fluid.

[0035] According to a preferred embodiment, the bicycle rim brake further comprises a first coupling element and a second coupling element. The first coupling element is configured to couple the first brake arm to a bicycle frame, such that the first brake arm pivots relative to the bicycle frame about the first pivot axis. The second coupling element is configured to couple the second brake arm to the bicycle frame, such that the second brake arm pivots relative to the bicycle frame about the second pivot axis.

[0036] With regard to bicycle rim brakes, this aspect makes it possible to easily mount the bicycle rim brakes on the bicycle frame.

[0037] In a preferred embodiment, the bicycle rim brake is designed such that the first brake arm comprises a first base part, a first arm body, and a first adjustment device. The first drive element is attached to the first base part. The first arm body comprises the first mounting section and is coupled to the first base part to pivot about the first pivot axis relative to the first base part. The first adjustment device is configured to adjust the orientation of the first arm body relative to the first base part about the first pivot axis.

[0038] With this aspect of the bicycle rim brake, it is possible to adjust a clearance between the first friction element and a bicycle rim of a bicycle wheel in a rest state in which the first friction element is positioned in a rest position.

[0039] In a preferred embodiment, the bicycle rim brake is designed such that the second brake arm comprises a second base part, a second arm body, and a second adjustment device. The second drive lug is attached to the second base part. The second arm body comprises the second mounting section and is coupled to the second base part to pivot about the second pivot axis relative to the second base part. The second adjustment device is designed to adjust the orientation of the second arm body relative to the second base part about the second pivot axis.

[0040] With this aspect of the bicycle rim brake, it is possible to adjust a clearance between the first friction element and a bicycle rim of a bicycle wheel in a resting state in which the second friction element is positioned in a resting position.

[0041] According to a preferred embodiment, the bicycle rim brake further comprises an arm preloading element which is designed to exert a preload force on the first arm body and the second arm body such that the first mounting section and the second mounting section move away from each other.

[0042] With this aspect of the bicycle rim brake, it is possible to position the first brake arm in a first rest position and the second brake arm in a second rest position.

[0043] According to a preferred embodiment, the bicycle rim brake further comprises an arm preloading element which is designed to exert a preload force on the first brake arm and the second brake arm such that the first mounting section and the second mounting section move away from each other.

[0044] With this aspect of the bicycle rim brake, it is possible to position the first brake arm in a first rest position and the second brake arm in a second rest position.

[0045] According to a further aspect of the present invention, a bicycle rim brake comprises a first brake arm, a second brake arm, and a pivotable actuating element. The first brake arm is configured to pivot about a first pivot axis and includes a first mounting section on which a first friction element is to be mounted. The second brake arm is configured to pivot about a second pivot axis, which differs from the first pivot axis. The second brake arm includes a second mounting section on which a second friction element is to be mounted. The pivotable actuating element is configured to pivot in a first pivot direction about a third pivot axis, which differs from the first and second pivot axes, such that the first brake arm pivots about the first pivot axis and the second brake arm pivots about the second pivot axis.The third pivot axis is located in a region defined between the first and second pivot axes. Furthermore, the third pivot axis is parallel to both the first and second pivot axes.

[0046] In this design of the bicycle rim brake, the pivoting actuating element is configured to pivot in a first direction around a third pivot axis, which differs from the first and second pivot axes. This means that the first brake arm pivots around the first pivot axis and the second brake arm pivots around the second pivot axis. The third pivot axis is parallel to both the first and second pivot axes and is located within a range defined between them. This allows for the utilization of the area between the first and second pivot axes. Consequently, it is possible to reduce the size of the bicycle rim brake and / or further expand its design possibilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The invention and many of its accompanying advantages will be better understood by reference to the following detailed description in conjunction with the accompanying drawings, in which: Fig. 1 is a side view of a bicycle frame equipped with a bicycle rim brake according to a first embodiment; Fig. 2 a perspective representation of the in Fig. The bicycle rim brake shown in 1 is; Fig. 3 another perspective representation of the in Fig. The bicycle rim brake shown in 1 is; Fig. 4 a cross-sectional view of the bicycle rim brake along line IV-IV from Fig. 2 is; Fig. 5 a perspective view of a swiveling cam element of the in Fig. The bicycle rim brake shown in 1 is; Fig. 6 a cross-sectional view of the bicycle rim brake along line VI-VI from Fig. 2 is; Fig. 7 another side view of the in Fig. The bicycle rim brake shown in point 1 is; and Fig. Figure 8 shows a side view of a bicycle frame equipped with a bicycle rim brake according to a second embodiment. DESCRIPTION OF THE EXECUTION FORMS

[0048] The embodiments are now described with reference to the attached drawings, where similar reference numerals denote corresponding or identical elements across the different drawings. First embodiment

[0049] If we refer to at the beginning... Fig. In a first embodiment, a bicycle rim brake 10 is designed to be mounted on a bicycle frame 2. The bicycle rim brake 10 is mounted on a front fork 3 of the bicycle frame 2 and is designed to exert a braking force on a bicycle wheel 4, which is rotatably attached to the front fork 3. While the bicycle rim brake 10 is a front bicycle rim brake in the illustrated embodiment, structures of the bicycle rim brake 10 can be applied to a rear rim brake if required and / or desired.

[0050] In the present application, the following directional terms "front", "back", "forward", "backward", "left", "right", "across", "upward", and "downward", as well as all other similar directional terms, refer to those directions determined based on a user (e.g., a rider) who, for example, is seated facing a bicycle handlebar (not shown) on a bicycle saddle (not shown). Accordingly, these terms, as used to describe the bicycle rim brake 10, should be interpreted relative to the bicycle equipped with the bicycle rim brake 10 as being used in an upright riding position on a horizontal surface.

[0051] As in the Fig. As shown in Figures 1 to 3, the bicycle rim brake 10 comprises a first brake arm 12 and a second brake arm 14. The first brake arm 12 is designed to pivot about a first pivot axis A1. The second brake arm 14 is designed to pivot about a second pivot axis A2, which differs from the first pivot axis A1. In the embodiment shown, the first pivot axis A1 is parallel to the second pivot axis A2.

[0052] As in Fig. As shown in Figure 1, the bicycle rim brake 10 further comprises a first friction element 16 and a second friction element 18. The first friction element 16 is mounted on the first brake arm 12 to be in contact with a bicycle rim 5 of the bicycle wheel 4. The second friction element 18 is mounted on the second brake arm 14 to be in contact with the bicycle rim 5 of the bicycle wheel 4. More precisely, the first brake arm 12 includes a first mounting section 20 to which the first friction element 16 is to be mounted. The second brake arm 14 includes a second mounting section 22 to which the second friction element 18 is to be mounted.

[0053] As in Fig. As shown in Figure 3, the first brake arm 12 comprises a first driver 24, which is arranged at a distance from the first mounting section 20. The second brake arm 14 comprises a second driver 26, which is arranged at a distance from the second mounting section 22. In the embodiment shown, the first driver 24 is located opposite the first mounting section 20 in the first brake arm 12. The second driver 26 is located opposite the second mounting section 22 in the second brake arm 14.

[0054] As in Fig. As shown in Figure 3, the bicycle rim brake 10 includes a pivoting cam element 28. The pivoting cam element 28 can also be referred to as a pivoting actuating element. The pivoting actuating element is configured to pivot about a third pivot axis A3, such that the first brake arm 12 pivots about the first pivot axis A1 and the second brake arm 14 pivots about the second pivot axis A2. The pivoting cam element 28 is configured to pivot about the third pivot axis A3 in order to guide the first driver 24 and the second driver 26 such that the first brake arm 12 pivots about the first pivot axis A1 and the second brake arm 14 pivots about the second pivot axis A2. The third pivot axis A3 differs from the first pivot axis A1 and the second pivot axis A2.While in the embodiment shown the third pivot axis A3 is parallel to the first pivot axis A1 and the second pivot axis A2, the third pivot axis A3 can be non-parallel to the first pivot axis A1 and the second pivot axis A2.

[0055] As in Fig. As shown in Figure 1, the pivotable cam element 28 is configured to pivot about the third pivot axis A3 in order to pivot the first brake arm 12 about the first pivot axis A1, so that the first friction element 16 moves between a first rest position P11 and a second actuated position P12. The pivotable cam element 28 is configured to pivot about the third pivot axis A3 in order to pivot the second brake arm 14 about the second pivot axis A2, so that the second friction element 18 moves between a second rest position P21 and a second actuated position P22.

[0056] As in Fig. As shown in Figure 4, the pivotable cam element 28 is designed to pivot about the third pivot axis A3 in order to guide the first driver 24 such that the first brake arm 12 pivots about the first pivot axis A1 between a first rest position P31 and a second actuated position P32. The pivotable cam element 28 is designed to pivot about the third pivot axis A3 in order to guide the second driver 26 such that the second brake arm 14 pivots about the second pivot axis A2 between a second rest position P41 and a second actuated position P42. The first rest position P31 of the first brake arm 12 corresponds to the first rest position P11 ( Fig. 1) of the first friction element 16. The first actuated position P32 of the first brake arm 12 corresponds to the first actuated position P12 ( Fig. 1) of the first friction element 16. The second rest position P41 of the second brake arm 14 corresponds to the second rest position P21 ( Fig. 1) of the second friction element 18. The second actuated position P42 of the second brake arm 14 corresponds to the second actuated position P22 ( Fig. 1) of the second friction element 18.

[0057] In the present application, the term “rest position,” as used herein, refers to a position in which a movable part, such as the first brake arm 12, the second brake arm 14, the first friction element 16, and the second friction element 18, remains stationary in a state in which the movable part is not actuated by the user. The term “actuated position,” as used herein, refers to a position in which the movable part has been actuated by the user to perform the actuation of the bicycle component.

[0058] As in the Fig. As shown in Figures 1 to 3, the bicycle rim brake 10 further comprises a base element 30 on which the first brake arm 12 is pivotally mounted about the first pivot axis A1, and on which the second brake arm 14 is pivotally mounted about the second pivot axis A2. Since the bicycle rim brake 10 also comprises the base element 30, it is possible to treat the bicycle rim brake 10 as a single component. However, the base element 30 can be omitted from the bicycle rim brake 10 if required and / or desired.

[0059] As in the Fig. 2 and Fig. As shown in Figure 3, the bicycle rim brake 10 further comprises a first coupling element 32 and a second coupling element 34. The first coupling element 32 is designed to connect the first brake arm 12 to the bicycle frame 2 ( Fig. 1) to couple so that the first brake arm 12 is relative to the bicycle frame 2 ( Fig. 1) pivots about the first pivot axis A1. The second coupling element 34 is formed, attaching the second brake arm 14 to the bicycle frame 2 ( Fig. 1) to couple, so that the second brake arm 14 is relative to the bicycle frame 2 ( Fig. 1) pivots about the second pivot axis A2. Since the bicycle rim brake 10 comprises the first coupling element 32 and the second coupling element 34, it is possible to easily mount the bicycle rim brake 10 to the bicycle frame 2. However, at least one of the first coupling element 32 and the second coupling element 34 of the bicycle rim brake 10 can be omitted if required and / or desired.

[0060] In the illustrated embodiment, the first coupling element 32 couples the first brake arm 12 to the base element 30 in order to pivot relative to the base element 30 about the first pivot axis A1. The second coupling element 34 couples the second brake arm 14 to the base element 30 in order to pivot relative to the base element 30 about the second pivot axis A2.

[0061] As in Fig. As shown in Figure 3, the first coupling element 32 comprises a first threaded part 32a. The second coupling element 34 comprises a second threaded part 34a. The first threaded part 32a is threaded to a first brake mounting part (not shown) of the front fork 3 ( Fig. 1) in engagement. The second threaded part 34a is threaded to a second brake mounting part (not shown) of the front fork 3 ( Fig. 1) during the procedure.

[0062] As in Fig. As shown in Figure 3, the bicycle rim brake 10 further comprises an additional base element 36 on which the first brake arm 12 is pivotably mounted about the first pivot axis A1, and on which the second brake arm 14 is pivotably mounted about the second pivot axis A2. In the illustrated embodiment, the first coupling element 32 couples the first brake arm 12 to the base element 30 and the additional base element 36 so that it pivots relative to the base element 30 about the first pivot axis A1. The second coupling element 34 couples the second brake arm 14 to the base element 30 and the additional base element 36 so that it pivots relative to the base element 30 about the second pivot axis A2. The first brake arm 12 is positioned between the base element 30 and the additional base element 36 in an axial direction D1 parallel to the first pivot axis A1.The second brake arm 14 is positioned between the base element 30 and the additional base element 36 in the axial direction D1. The first drive element 24, the second drive element 26, and the pivoting cam element 28 are positioned between the base element 30 and the additional base element 36 in the axial direction D1. The additional base element 36 can be omitted from the bicycle rim brake 10 if required and / or desired.

[0063] As in Fig. As shown in Figure 4, the pivoting cam element 28 comprises a first cam surface 28a and a second cam surface 28b. The first cam surface 28a is configured to guide the first driver 24. The second cam surface 28b is configured to guide the second driver 26. The first cam surface 28a has a curved shape and is in contact with the first driver 24. The second cam surface 28b also has a curved shape and is in contact with the second driver 26. Since the pivoting cam element 28 comprises the first cam surface 28a and the second cam surface 28b, it is possible to reduce the size of the pivoting cam element 28 by modifying the first cam surface 28a and the second cam surface 28b. This can further reduce the size of the bicycle rim brake 10 and / or further expand the design possibilities of the bicycle rim brake 10.

[0064] In the embodiment shown, as in Fig. As shown in Figure 4, the first cam surface 28a is located on the opposite side of the second cam surface 28b relative to the third pivot axis A3. The third pivot axis A3 is situated between the first cam surface 28a and the second cam surface 28b. Accordingly, both sides of the pivotable cam element 28 can be used as cam surfaces, allowing for a further reduction in the size of the pivotable cam element 28. This makes it possible to further reduce the size of the bicycle rim brake 10 and / or to further expand its design possibilities. However, the arrangements of the first cam surface 28a and the second cam surface 28b are not limited to the embodiment shown.

[0065] As in Fig. As can be seen in Figure 4, the first cam surface 28a has a profile that differs from the profile of the second cam surface 28b. This makes it possible to position the third pivot axis A3 at different locations relative to the first drive 24 and the second drive 26. Accordingly, it is possible to further reduce the size of the bicycle rim brake 10 and / or further expand its design possibilities. However, the profile of the first cam surface 28a can be the same as the profile of the second cam surface 28b, if required and / or desired.

[0066] As in Fig. As shown in Figure 4, the pivotable cam element 28 is positioned between the first drive element 24 and the second drive element 26. The third pivot axis A3 is positioned between the first drive element 24 and the second drive element 26. This allows for the utilization of the space between the first drive element 24 and the second drive element 26. Consequently, it is possible to further reduce the size of the bicycle rim brake 10 and / or to further expand its design possibilities. However, the arrangements of the pivotable cam element 28 and the third pivot axis A3 are not limited to the embodiment shown.

[0067] As in Fig. As shown in Figure 4, the third pivot axis A3 is located in a region AR1 defined between the first pivot axis A1 and the second pivot axis A2. More precisely, the first pivot axis A1 is spaced from the second pivot axis A2 in a transverse direction D2. The region AR1 is defined between the first pivot axis A1 and the second pivot axis A2 in the transverse direction D2. Since the third pivot axis A3 is located in a region AR1 defined between the first pivot axis A1 and the second pivot axis A2, it is possible to utilize the area defined between the first pivot axis A1 and the second pivot axis A2. Accordingly, it is possible to further reduce the size of the bicycle rim brake 10 and / or to further expand the design possibilities of the bicycle rim brake 10. However, the arrangement of the third pivot axis A3 is not limited to the embodiment shown.

[0068] As in Fig. As shown in Figure 4, the first driver 24 is rotatable about a first axis of rotation A4. The second driver 26 is rotatable about a second axis of rotation A5. In the illustrated embodiment, the first axis of rotation A4 is parallel to the second axis of rotation A5. The first axis of rotation A4 and the second axis of rotation A5 are parallel to the first pivot axis A1, the second pivot axis A2, and the third pivot axis A3. The first driver 24 has a tubular shape. The second driver 26 also has a tubular shape. Because the first driver 24 is rotatable about the first axis of rotation A4, it is possible to make the relative movement between the first driver 24 and the pivotable cam element 28 smooth. Because the second driver 26 is rotatable about the second axis of rotation A5, it is possible to make the relative movement between the second driver 26 and the pivotable cam element 28 smooth. This can make the actuation of the bicycle rim brake 10 smooth.

[0069] As in Fig. As shown in Figure 4, the first driver 24 is located on the opposite side of the first assembly section 20 relative to the first pivot axis A1. The first brake arm 12 comprises a first base part 38 and a first arm body 40. The first driver 24 is attached to the first base part 38. The first driver 24 is rotatable relative to the first base part 38 about the first pivot axis A4. The first arm body 40 comprises the first assembly section 20 and is coupled to the first base part 38 to pivot relative to the first base part 38 about the first pivot axis A1.

[0070] As in Fig. As shown in Figure 4, the second driver 26 is located on the opposite side of the second mounting section 22 relative to the second pivot axis A2. The second brake arm 14 comprises a second base part 42 and a second arm body 44. The second driver 26 is attached to the second base part 42. The second driver 26 is rotatable relative to the second base part 42 about the second pivot axis A5. The second arm body 44 comprises the second mounting section 22 and is coupled to the second base part 42 to pivot relative to the second base part 42 about the second pivot axis A2.

[0071] Since the first drive element 24 is located on the opposite side of the first mounting section 20 relative to the first pivot axis A1, it is possible to utilize a gap around the opposite side of the first mounting section 20 in the first brake arm 12. Similarly, since the second drive element 26 is located on the opposite side of the second mounting section 22 relative to the second pivot axis A2, it is possible to utilize a gap around the opposite side of the second mounting section 22 in the second brake arm 14. Accordingly, it is possible to further reduce the size of the bicycle rim brake 10 and / or further expand the design possibilities of the bicycle rim brake 10.

[0072] As in Fig. As shown in Figure 4, the first brake arm 12 includes a first adjusting device 46. The first adjusting device 46 is configured to adjust the orientation of the first arm body 40 relative to the first base part 38 about the first pivot axis A1. In the embodiment shown, the first adjusting device 46 includes a screw. The first arm body 40 includes a first threaded hole 40a. The first adjusting device 46 engages with the first threaded hole 40a via a thread. One end of the first adjusting device 46 can be brought into contact with the first base part 38.

[0073] The rotation of the first adjusting device 46 relative to the first base part 38 changes a linear position of the first adjusting device 46 relative to the first arm body 40 along a center line CL1 of the first threaded hole 40a. The change in the linear position of the first adjusting device 46 relative to the first arm body 40 changes a pivot position of the first arm body 40 relative to the first base part 38 about the first pivot axis A1. Thus, the orientation of the first arm body 40 relative to the first base part 38 is adjusted by using the first adjusting device 46. Since the first brake arm 12 comprises the first base part 38, the first arm body 40, and the first adjusting device 46, it is possible to easily adjust a clearance between the first friction element 16 and the bicycle rim 5 of the bicycle wheel 4 in a rest state, in which the first friction element 16 is in the first rest position P11 ( Fig. 1) is positioned.

[0074] As in Fig. As shown in Figure 4, the second brake arm 14 includes a second adjusting device 48. The second adjusting device 48 is configured to adjust the orientation of the second arm body 44 relative to the second base part 42 about the second pivot axis A2. In the illustrated embodiment, the first adjusting device 46 includes a screw. The second arm body 44 includes a second threaded hole 44a. The second adjusting device 48 engages with the second threaded hole 44a via a thread. One end of the second adjusting device 48 can be brought into contact with the second base part 42.

[0075] The rotation of the second adjusting device 48 relative to the second base part 42 changes a linear position of the second adjusting device 48 relative to the second arm body 44 along a center line CL2 of the second threaded hole 44a. The change in the linear position of the second adjusting device 48 relative to the second arm body 44 changes a pivot position of the second arm body 44 relative to the second base part 42 about the second pivot axis A2. Thus, the orientation of the second arm body 44 relative to the second base part 42 is adjusted by using the second adjusting device 48. Since the second brake arm 14 comprises the second base part 42, the second arm body 44, and the second adjusting device 48, it is possible to easily adjust a clearance between the second friction element 18 and the bicycle rim 5 of the bicycle wheel 4 in a rest state, in which the second friction element 18 is in the second rest position P21 ( Fig. 1) is positioned.

[0076] As in Fig. As shown in Figure 1, the bicycle rim brake 10 further comprises an intermediate element 50 through which an actuating force F1 is transmitted to the pivotable cam element 28. The intermediate element 50 is designed to be coupled to the pivotable cam element 28 in order to pivot together with the pivotable cam element 28 about the third pivot axis A3. In the embodiment shown, the intermediate element 50 comprises a cable attachment section 52 to which a control cable 6 is attached. More precisely, one end of an inner wire 6a of the control cable 6 is attached to the cable attachment section 52. Possible examples for the control cable 6 include a Bowden cable.

[0077] As in the Fig. 1 and Fig. As shown in Figure 3, the base element 30 comprises an outer sheath receiving section 54, which is configured to receive an outer sheath 6b of the control cable 6. The outer sheath receiving section 54 includes a receiving hole 54a in which one end of the outer sheath 6b is provided.

[0078] Since the bicycle rim brake 10 further comprises the intermediate element 50, it is possible to transmit the actuating force F1 to the pivoting cam element 28 via a simple structure. Because the intermediate element 50 is designed to be coupled to the pivoting cam element 28 in order to pivot together with the pivoting cam element 28 about the third pivot axis A3, it is possible to transmit the actuating force F1 to the pivoting cam element 28 by pivoting the intermediate element 50. Since the intermediate element 50 includes the cable attachment section 52, it is possible to actuate the bicycle rim brake 10 via the control cable 6.

[0079] As in Fig. As shown in Figure 3, the bicycle rim brake 10 further comprises a pivot axle shaft 56, which is designed to pivotally mount the pivotable cam element 28. As shown in Figure 3, the bicycle rim brake 10 also includes a pivot axle shaft 56, which is designed to pivotally mount the pivotable cam element 28. Fig. As shown in Figure 5, the pivot shaft 56 extends from the pivotable cam element 28 relative to the pivotable cam element 28 along the third pivot axis A3 to both sides. The pivot shaft 56 defines the third pivot axis A3. The pivotable cam element 28 is provided as a single, unified element with the pivot shaft 56. However, the pivotable cam element 28 can also be a separate element from the pivot shaft 56.

[0080] As in Fig. As shown in Figure 6, the base element 30 includes a bearing hole 30a. The pivot shaft 56 extends through the bearing hole 30a in the axial direction D1. The additional base element 36 includes an additional bearing hole 36a. The pivot shaft 56 extends through the additional bearing hole 36a. The bicycle rim brake 10 further includes a bearing ring 58 and an additional bearing ring 60. The bearing ring 58 is located in the bearing hole 30a of the base element 30 and is positioned between the pivot shaft 56 and the base element 30. The additional bearing ring 60 is located in the additional bearing hole 36a of the additional base element 36 and is positioned between the pivot shaft 56 and the additional base element 36. The swivel shaft 56 is pivotably mounted on the base element 30 and the additional base element 36 via the bearing ring 58 and the additional bearing ring 60.

[0081] The intermediate element 50 is designed to be coupled to the pivot shaft 56. The intermediate element 50 is designed to pivot relative to the base element 30, together with the pivotable cam element 28 and the pivot shaft 56, about the third pivot axis A3. The bicycle rim brake 10 further comprises a fastening element 62, such as a screw. The intermediate element 50 is attached to the pivot shaft 56 via the fastening element 62.

[0082] As in Fig. As shown in Figure 7, the bicycle rim brake 10 further comprises an arm preload element 64. The arm preload element 64 is configured to exert a preload force F2 on the first brake arm 12 and the second brake arm 14 such that the first mounting section 20 and the second mounting section 22 move away from each other. The arm preload element 64 is configured to exert the preload force F2 on the first arm body 40 and the second arm body 44 such that the first mounting section 20 and the second mounting section 22 move away from each other. The arm preload element 64 comprises a first end 64a and a second end 64b. The first arm body 40 comprises a first hole 40b. The second arm body 44 comprises a second hole 44b. The first end 64a of the arm preload element 64 is provided in the first hole 40b of the first arm body 40. The second end 64b of the arm preload element 64 is provided in the second hole 44b of the second arm body 44.Since the bicycle rim brake 10 also includes the arm preload element 64, it is possible to position the first brake arm 12 in the first rest position P31 and to position the second brake arm 14 at the second rest position P41.

[0083] As in Fig. As can be seen in Figure 1, when the inner wire 6a of the control cable 6 is pulled, the intermediate element 50 pivots relative to the base element 30 about the third pivot axis A3 in a first pivot direction D31. The pivotable cam element 28 pivots together with the intermediate element 50 relative to the base element 30 about the third pivot axis A3 in the first pivot direction D31. This pivoting movement of the pivotable cam element 28 moves the first driver 24 and the second driver 26 away from each other. Thus, the first brake arm 12 pivots relative to the base element 30 about the first pivot axis A1 from the first rest position P31 to the first actuated position P32 ( Fig. 4). Similarly, the second brake arm 14 pivots relative to the base element 30 about the second pivot axis A2 from the second rest position P41 to the second actuated position P42 ( Fig. 4) towards. The pivoting movement of the first brake arm 12 and the second brake arm 14 causes the first friction element 16 and the second friction element 18 to grip the bicycle rim 5 ( Fig. 1) clamp them, thereby exerting braking force on the bicycle wheel 4.

[0084] When the inner wire 6a of the control cable 6 is released, the preload force F2 of the arm preload element 64 ( Fig. 7) the first friction element 16 returns to the first rest position P11, and returns the second friction element 18 to the second rest position P21. Thus, the first friction element 16 and the second friction element 18 move away from the bicycle rim 5. At this point, the first drive element 24 and the second drive element 26 approach each other, causing the pivoting cam element 28 to pivot relative to the base element 30 about the third pivot axis A3 in a second pivot direction D32, which is opposite to the first pivot direction D31. This returns the pivoting cam element 28 and the intermediate element 50 to their respective starting positions ( Fig. 1 and Fig. 4) back.

[0085] In the bicycle rim brake 10, the pivoting cam element 28 is designed to pivot about the third pivot axis A3, which differs from the first pivot axis A1 and the second pivot axis A2, in order to guide the first driver 24 and the second driver 26 such that the first brake arm 12 pivots about the first pivot axis A1 and the second brake arm 14 pivots about the second pivot axis A2. Thus, it is possible to convert the pivoting movement of the pivoting cam element 28 into the pivoting movement of the first brake arm 12 and the pivoting movement of the second brake arm 14. Accordingly, it is possible to reduce the size of the bicycle rim brake 10 and / or to expand the design possibilities of the bicycle rim brake 10 compared, for example, with a comparable rim brake that includes a structure designed to convert the linear movement of a cam element into pivoting movements of brake arms.

[0086] Furthermore, in the bicycle rim brake 10, the pivoting actuating element is designed to pivot about the third pivot axis A3, which differs from the first pivot axis A1 and the second pivot axis A2, so that the first brake arm 12 pivots about the first pivot axis A1 and the second brake arm 14 pivots about the second pivot axis A2. The third pivot axis A3 is located in a region defined between the first pivot axis A1 and the second pivot axis A2. This makes it possible to utilize the area defined between the first pivot axis A1 and the second pivot axis A2. Accordingly, it is possible to further reduce the size of the bicycle rim brake 10 and / or to further expand the design possibilities of the bicycle rim brake 10. Second embodiment

[0087] A bicycle rim brake 210 according to a second embodiment is described below with reference to Fig. 8 described. The bicycle rim brake 210 has essentially the same construction as the bicycle rim brake 10, with the exception of the base element 30 and the intermediate element 50. Thus, elements that have essentially the same function as those in the first embodiment are numbered the same here and, for the sake of brevity, are not described and / or illustrated again in detail.

[0088] As in Fig. As shown in Figure 8, the bicycle rim brake 10 further comprises a base element 230 on which the first brake arm 12 is pivotably mounted about the first pivot axis A1, and on which the second brake arm 14 is pivotably mounted about the second pivot axis A2. Unlike the base element 30 according to the first embodiment, the outer casing receiving section 54 is omitted from the base element 230.

[0089] The bicycle rim brake 210 further comprises a hydraulic cylinder 270 and a piston 272. The hydraulic cylinder 270 includes a cylinder bore 274. The piston 272 is movably mounted in the cylinder bore 274. In the embodiment shown, the hydraulic cylinder 270 is mounted on the base element 230, instead of the outer casing receiving section 54 according to the first embodiment. A fluid chamber 276 is defined by the hydraulic cylinder 270 and the piston 272. A fluid chamber 276 is in fluid communication with a main chamber of a brake actuation device (not shown) via a hydraulic hose 7. Since the bicycle rim brake 210 comprises the hydraulic cylinder 270 and the piston 272, it is possible to actuate the bicycle rim brake 210 via a hydraulic fluid.

[0090] As in Fig.As shown in Figure 8, the bicycle rim brake 210 further comprises an intermediate element 250, via which the actuating force F1 is transmitted to the pivotable cam element 28. Unlike the intermediate element 50 in the first embodiment, the cable attachment section 52 is omitted from the intermediate element 250.

[0091] The piston 272 is designed to be coupled to the intermediate element 250. In the illustrated embodiment, the bicycle rim brake 210 further comprises a piston rod 278, a piston preload element 280, and a stop element 282. The piston rod 278 is effectively coupled to the piston 272. The intermediate element 250 comprises a coupling pin 284, which has a threaded hole 284a. The piston rod 278 comprises a threaded bolt 278a. The threaded bolt 278a engages with the threaded hole 284a via a thread. The rotation of the piston rod 278 changes the distance between the piston 272 and the coupling pin 284, which allows adjustment of the relative position between the piston 272 and the intermediate element 250.

[0092] The movement of the piston 272 is transmitted to the intermediate element 250 via the piston rod 278 and the coupling pin 284. The piston preload element 280 is movably mounted in the cylinder bore 274. The stop element 282 is attached to the hydraulic cylinder 270 to support one end of the piston preload element 280. The stop element 282 is annular in shape. The piston rod 278 extends through an opening 282a in the stop element 282.

[0093] With the bicycle rim brake 210 it is possible to achieve essentially the same advantageous effects as with the bicycle rim brake 10 according to the first embodiment.

[0094] In the present application, the term "comprehensive" and its derivatives, as used herein, are intended to be open terms that indicate the presence of the specified features, elements, components, groups, numbers, and / or steps, but do not exclude the presence of other, unspecified features, elements, components, groups, numbers, and / or steps. This concept also applies to words with similar meanings, for example, the terms "exhibit," "include," and their derivatives.

[0095] The ordinal numbers, such as "first" and "second," used in this application are merely designations and have no other meaning, such as indicating a specific order or the like. Furthermore, the term "first element" does not in itself imply the existence of a "second element," and the term "second element" does not in itself imply the existence of a "first element."

[0096] The term “pair of”, as used here, can encompass training in which the pair of elements has different forms or structures from each other, in addition to training in which the pair of elements has the same forms or structures.

Claims

[1] Bicycle rim brake (10, 210), comprising: a first brake arm (12) which is designed to pivot about a first pivot axis (A1) and which includes a first assembly section (20) on which a first friction element (16) is to be mounted, and a first driver (24) which is arranged spaced apart from the first assembly section (20); a second brake arm (14) which is designed to pivot about a second pivot axis (A2) which is different from the first pivot axis (A1), and which includes a second assembly section (22) to which a second friction element (18) is to be mounted, and a second driver (26) which is arranged at a distance from the second assembly section (22); and a pivotable cam element (28) configured to pivot about a third pivot axis (A3) which differs from the first pivot axis (A1) and the second pivot axis (A2) in order to guide the first driver (24) and the second driver (26) such that the first brake arm (12) pivots about the first pivot axis (A1) and the second brake arm (14) pivots about the second pivot axis (A2), where the third pivot axis (A3) is parallel to the first pivot axis (A1) and parallel to the second pivot axis (A2), and wherein the pivotable cam element (28) comprises a first cam surface (28a) configured to guide the first driver (24) and a second cam surface (28b) configured to guide the second driver (26). [2] Bicycle rim brake (10, 210) according to claim 1, wherein the first cam surface (28a) is provided relative to the third pivot axis (A3) on a side opposite the second cam surface (28b). [3] Bicycle rim brake (10, 210) according to one of claims 1 to 2, wherein the first cam surface (28a) has a profile that differs from a profile of the second cam surface (28b). [4] Bicycle rim brake (10, 210) according to one of claims 1 to 3, wherein the pivotable cam element (28) is provided between the first driver (24) and the second driver (26). [5] Bicycle rim brake (10, 210) according to one of claims 1 to 4, wherein the third pivot axis (A3) is provided between the first driver (24) and the second driver (26). [6] Bicycle rim brake (10, 210) according to one of claims 1 to 5, wherein the third pivot axis (A3) is provided in a region (AR1) defined between the first pivot axis (A1) and the second pivot axis (A2). [7] Bicycle rim brake (10, 210) according to one of claims 1 to 6, wherein the first driver (24) is rotatable about a first axis of rotation (A4), and the second driver (26) is rotatable about a second axis of rotation (A5). [8] Bicycle rim brake (10, 210) according to one of claims 1 to 7, wherein the first driver (24) is provided relative to the first pivot axis (A1) on an opposite side of the first assembly section (20), and the second driver (26) is provided relative to the second pivot axis (A2) on an opposite side of the second assembly section (22). [9] Bicycle rim brake (10, 210) according to one of claims 1 to 8, further comprising: a base element (30, 230) on which the first brake arm (12) is pivotably mounted about the first pivot axis (A1), and on which the second brake arm (14) is pivotably mounted about the second pivot axis (A2). [10] Bicycle rim brake (10, 210) according to one of claims 1 to 9, further comprising: an intermediate element (50, 250) via which an actuating force (F1) is to be transmitted to the pivotable cam element (28). [11] Bicycle rim brake (10, 210) according to claim 10, wherein the intermediate element (50, 250) is designed to be coupled to the pivotable cam element (28) in order to pivot together with the pivotable cam element (28) about the third pivot axis (A3). [12] Bicycle rim brake (10, 210) according to one of claims 10 or 11, wherein the intermediate element (50) comprises a cable attachment section (52) to which a control cable (6) is to be attached. [13] Bicycle rim brake (10, 210) according to one of claims 10 to 12, further comprising: a hydraulic cylinder (270) comprising a cylinder bore (274); and a piston (272) which is movably provided in the cylinder bore (274), wherein the piston (272) is designed to be coupled to the intermediate element (250). [14] Bicycle rim brake (10, 210) according to one of claims 1 to 13, further comprising: a first coupling element (32) configured to couple the first brake arm (12) to a bicycle frame (2) such that the first brake arm (12) pivots relative to the bicycle frame (2) about the first pivot axis (A1); and a second coupling element (34) which is designed to couple the second brake arm (14) to the bicycle frame (2) so that the second brake arm (14) pivots relative to the bicycle frame (2) about the second pivot axis (A2). [15] Bicycle rim brake (10, 210) according to one of claims 1 to 14, wherein the first brake arm (12) comprises a first base part (38) to which the first driver (24) is attached, a first arm body (40) comprising the first assembly section (20) and coupled to the first base part (38) to pivot about the first pivot axis (A1) relative to the first base part (38), and a first adjustment device (46) which is configured to adjust the orientation of the first arm body (40) relative to the first base part (38) about the first pivot axis (A1). [16] Bicycle rim brake (10, 210) according to claim 15, wherein the second brake arm (14) includes a second base part (42) to which the second driver (26) is attached, a second arm body (44) which includes the second assembly section (22) and is coupled to the second base part (42) in order to pivot relative to the second base part (42) about the second pivot axis (A2), and a second adjusting device (48) which is configured to adjust the orientation of the second arm body (44) relative to the second base part (42) about the second pivot axis (A2). [17] Bicycle rim brake (10, 210) according to claim 16, further comprising: an arm preloading element (64) which is configured to exert a preload force (F2) on the first arm body (40) and the second arm body (44) such that the first assembly section (20) and the second assembly section (22) move away from each other. [18] Bicycle rim brake (10, 210) according to one of claims 1 to 17, further comprising: an arm preload element (64) which is configured to exert a preload force (F2) on the first brake arm (12) and the second brake arm (14) such that the first assembly section (20) and the second assembly section (22) move away from each other. [19] Bicycle rim brake (10, 210), comprising: a first brake arm (12) designed to pivot about a first pivot axis (A1) and comprising a first mounting section (20) on which a first friction element (16) is to be mounted; a second brake arm (14) configured to pivot about a second pivot axis (A2) that differs from the first pivot axis (A1), and comprising a second mounting section (22) on which a second friction element (18) is to be mounted; and a pivotable actuating element configured to pivot in a first pivot direction (D31) about a third pivot axis (A3) which differs from the first pivot axis (A1) and the second pivot axis (A2), such that the first brake arm (12) pivots about the first pivot axis (A1) and the second brake arm (14) pivots about the second pivot axis (A2), wherein the third pivot axis (A3) is provided in a region defined between the first pivot axis (A1) and the second pivot axis (A2), and where the third pivot axis (A3) is parallel to the first pivot axis (A1) and parallel to the second pivot axis (A2).

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