bicycle rim brake

Abstract

Bicycle rim brake (10) comprising: a first shaft (12) which defines a first pivot axis (A1), wherein the first shaft (12) includes a first fixed end part (32) which is / will be provided fixed with respect to a bicycle body (4); a second shaft (14) which defines a second pivot axis (A2), wherein the second shaft (14) includes a second fixed end part (34) which is / will be provided fixed with respect to the bicycle body (4); a first brake arm (16) which is / will be pivotably provided on the first shaft (12) with respect to the first pivot axis (A1); a second brake arm (18) which is / will be pivotably provided on the second shaft (14) with respect to the second pivot axis (A2); and a reinforcing element (64) which couples the first shaft (12) to the second shaft (14), wherein the reinforcing element (64) is provided such that the first brake arm (16) is at least partially further away from the first fixed end part (32) than the reinforcing element (64), and such that the second brake arm (18) is / will be arranged at least partially closer to the second fixed end part (34) than the reinforcing element (64).

Description

Cross-reference to related applications

[0001] This application claims priority from US patent application 14 / 820,575, filed on August 7, 2015. The entire disclosure of US patent application 14 / 820,575 is hereby fully incorporated by reference herein. Field of invention

[0002] The present invention relates to a bicycle rim brake. Background discussion

[0003] Cycling is becoming an increasingly popular form of recreation and transportation. It has also become a very popular competitive sport for both amateurs and professionals. Whether the bicycle is used for recreation, transportation, or competition, the bicycle industry has constantly improved various bicycle components. One bicycle component that has been extensively redesigned is the bicycle brake.

[0004] EP 2 340 987 A2 discloses a bicycle rim brake assembly comprising a bracket, first and second brake arms, a fastening element, and a preload element. The first brake arm is pivotally mounted on the bracket. The second brake arm is also pivotally mounted on the bracket. The fastening element has a support bracket section and a bicycle frame fastening section. The preload element is arranged on the fastening element.

[0005] EP 2 548 793 A2 discloses a bicycle brake arm, which essentially has a first branch and a second branch. The first branch comprises a cable fastening structure. The second branch extends from the first branch. The second branch comprises a brake pad fastening structure. At least one of the first and second branches contains an internal cavity. The at least one of the first and second branches has a cross-section in which the internal cavity is completely and continuously surrounded by an outer surface of the bicycle brake arm.

[0006] DE 18 90 527 U discloses a rim brake, in particular for bicycles, with a U-shaped support that can be attached to the vehicle frame, and two spring-loaded levers pivotably mounted on this support by separate bolts, one of whose lever arms each carries a brake shoe at the end and the other of whose U-shaped curved, overlapping lever arms are connected at their ends to a Bowden cable and are coupled to each other via a coupling cam and a coupling element that interacts positively with it.

[0007] The object of the present invention is to provide a reinforcing element for a bicycle rim brake which can absorb a force received from a second brake arm at a point that is further away from a second fixed end part of a second shaft, and absorb a force received from a first brake arm at a point that is closer to a first fixed end part of a first shaft, while still making the bicycle rim brake more compact. This object is achieved by the subject matter of main claim 1 and dependent claims 2 and 3. Preferred embodiments are defined in the dependent claims. Summary of the invention

[0008] According to a first aspect of the present invention, a bicycle rim brake comprises a first shaft, a second shaft, a first brake arm, a second brake arm, and a reinforcing element. The first shaft defines a first pivot axis. The first shaft includes a first fixed end part, which is / is provided in a fixed position relative to a bicycle body. The second shaft defines a second pivot axis. The second shaft includes a second fixed end part, which is / is provided in a fixed position relative to the bicycle body. The first brake arm is pivotably mounted on the first shaft with respect to the first pivot axis. The second brake arm is pivotably mounted on the second shaft with respect to the second pivot axis. The reinforcing element couples the first shaft to the second shaft.The reinforcing element is provided in such a way that the first brake arm is / will be arranged at least partially further away from the first fixed end part than the reinforcing element, and that the second brake arm is / will be arranged at least partially closer to the second fixed end part than the reinforcing element.

[0009] In the case of the bicycle rim brake, the reinforcement link is designed to couple the first axle to the second axle, thus improving the brake's strength with a simple structure. Furthermore, the reinforcement link is positioned so that the first brake arm is located at least partially further away from the first fixed end than the reinforcement link itself. Consequently, the reinforcement link can absorb the force acting on the first axle at a point further away from the first fixed end. This effectively improves both the strength and appearance of the bicycle rim brake. Additionally, the reinforcement link allows for a more compact design of the bicycle rim brake.

[0010] According to a further aspect of the present invention, a bicycle rim brake comprises a first shaft, a second shaft, a first brake arm, a second brake arm, and a reinforcing element. The first shaft defines a first pivot axis. The first shaft includes a first fixed end part, which is / is provided in a fixed position relative to a bicycle body. The second shaft defines a second pivot axis. The second shaft includes a second fixed end part, which is / is provided in a fixed position relative to the bicycle body. The first brake arm is pivotably mounted on the first shaft with respect to the first pivot axis. The first brake arm has a surface opposite the first fixed end part. The second brake arm is pivotably mounted on the second shaft with respect to the second pivot axis. The reinforcing element couples the first shaft to the second shaft.The reinforcing element is at least partially arranged between the first fixed end part of the first shaft and the opposite surface of the first brake arm, and the second brake arm is / will be arranged at least partially closer to the second fixed end part than the reinforcing element.

[0011] According to a further aspect of the present invention, a bicycle rim brake comprises a base member, a first shaft, a second shaft, a first brake arm, a second brake arm, and a reinforcing member. The base member includes a mounting groove. The first shaft is provided separately from the mounting shaft on the base member. The second shaft is provided separately from the mounting shaft and the first shaft on the base member. The first brake arm is designed to be pivotably mounted on the first shaft. The first brake arm includes a first contact part. The second brake arm is designed to be pivotably mounted on the second shaft. The second brake arm includes a second contact part, which is in contact with the first contact part. The reinforcing member couples the first shaft to the second shaft.The second shaft includes a second fixed end part, and the reinforcing element is provided in such a way that the second brake arm is / will be positioned at least partially closer to the second fixed end part than the reinforcing element.

[0012] In the case of the bicycle rim brake, another aspect is that the reinforcing element is designed to couple the first and second axles, thus improving the brake's rigidity with a simpler structure. Furthermore, because the second contact point of the second brake arm is designed to engage with the first contact point of the first brake arm, the first and second brake arms can move together. This simplifies the rim brake's design. Additionally, the reinforcing element allows for a more compact design.

[0013] Preferably, the first shaft includes a first fixed end part, which is / will be fixed to the base member. The first brake arm can have a surface opposite the first fixed end part. The reinforcing member can be / will be arranged, at least partially, between the first fixed end part of the first shaft and the surface opposite the first brake arm.

[0014] Preferably, the first shaft includes a first fixed end part, which is / will be fixed to the base element. The reinforcing element can be provided such that the first brake arm is / will be positioned at least partially further away from the first fixed end part than the reinforcing element.

[0015] Preferably, the second shaft includes a second fixed end part, which is / will be provided fixed with respect to the bicycle body.

[0016] Preferably, the bicycle rim brake further comprises a base element. The first shaft and the second shaft are preferably provided on the base element.

[0017] With this type of bicycle rim brake, it is easy to mount the brake to the bicycle frame via the base link. Preferably, the base link includes a mounting shaft, which is arranged separately or at a distance from the first and second shafts.

[0018] Preferably, the mounting shaft is arranged such that a first distance between the mounting shaft and the first shaft is essentially equal to a second distance between the mounting shaft and the second shaft when viewed from a parallel direction, parallel to the mounting shaft.

[0019] Preferably, the first brake arm includes a first mounting part for mounting a first friction element to the first brake arm. The second brake arm preferably includes a second mounting part for mounting a second friction element to the second brake arm. The mounting shaft can be located further away from the first mounting part than the first shaft. The mounting shaft can be located further away from the second mounting part than the second shaft.

[0020] Preferably, the second shaft includes a second head section and a second support section. The second support section can extend between the second fixed end section and the second head section to extendably support the second brake arm. The reinforcing element can include a second coupling section, which is / will be arranged between the second brake arm and the second head section.

[0021] With this type of bicycle rim brake, it is possible to connect the second coupling part of the reinforcing element to the second brake arm and the second head part of the second shaft. Accordingly, it is possible to effectively improve the strength of the bicycle rim brake.

[0022] Preferably, the second brake arm includes a recess. The second coupling part and the second head part can be / be positioned in the recess.

[0023] With this type of bicycle rim brake, it is possible to design the bicycle rim brake in a compact manner, while the bicycle rim brake includes the reinforcing element.

[0024] Preferably, the first brake arm includes a groove and the reinforcing element preferably includes a first coupling part which is / will be arranged in the groove.

[0025] With this type of bicycle rim brake, it is possible to position the first coupling part of the reinforcement element slightly further away from the first fixed end part.

[0026] Preferably, the first and second brake arms are designed such that a space is provided between them when viewed from a perpendicular direction, perpendicular to at least one of the first and second pivot axes. The reinforcing element can be located at least partially within this space. With such a bicycle rim brake, it is possible to make the brake more compact and improve its appearance, while the brake incorporates the reinforcing element. Preferably, the first brake arm includes an offset section that is positioned further from the bicycle body than the second brake arm when viewed from a perpendicular direction, perpendicular to at least one of the first and second pivot axes.The reinforcing element can be positioned between the offset part of the first brake arm and the second brake arm.

[0027] With this type of bicycle rim brake, it is possible to make the bicycle rim brake more compact, while the bicycle rim brake includes the reinforcing element.

[0028] Preferably, the first pivot axis and the second pivot axis are parallel to each other.

[0029] Preferably, the amplifying element comprises a first coupling part, a second coupling part, and an intermediate part. The first coupling part may include a first opening. The second coupling part may include a second opening. The intermediate part may be provided between the first and second coupling parts. The first wave may extend through the first opening. The second wave may extend through the second opening.

[0030] Preferably, the second coupling part is offset from a first level on which the first coupling part is / will be arranged.

[0031] With such a bicycle rim brake, it is possible to arrange the reinforcing element along the shapes of the first brake arm and the second brake arm.

[0032] Preferably, the first brake arm includes a wire attachment point to which an inner wire of a control cable is attached. The second brake arm may include an outer housing attachment point to which an outer housing of the control cable is attached. Brief description of the drawings

[0033] A more complete appreciation of the invention and many of its associated advantages will become immediately apparent once it is understood by reference to the following detailed description, when viewed in conjunction with the accompanying drawings. Fig. Figure 1 is a perspective front view of a bicycle rim brake according to a first embodiment. Fig. Figure 2 is a perspective rear view of the bicycle rim brake illustrated in Fig. 1. Fig. Figure 3 is a perspective exploded view of the bicycle rim brake illustrated in Fig. 1. Fig. Figure 4 is a cross-sectional view of the bicycle rim brake along line IV-IV of Fig. 5. Fig. 5 is a rear view of the bicycle rim brake illustrated in Fig. 1. Fig. Figure 6 is a perspective partial exploded view of the bicycle rim brake illustrated in Fig. 1. Fig. 7 is a front view of the bicycle rim brake illustrated in Fig. 1. Fig. Figure 8 is a perspective view of the first brake arm of the bicycle rim brake, illustrated in Fig. 1. Fig. Figure 9 is a cross-sectional view of the bicycle rim brake along line IX-IX of Fig. 7. Fig. Figure 10 is a cross-sectional view of the bicycle rim brake along line XX of Fig. 1. Fig. Figure 11 is a perspective exploded view of a bicycle rim brake according to a second embodiment. Descriptions of the embodiments

[0034] 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

[0035] Firstly, referring to the Fig. 1-3, a bicycle rim brake 10 according to a first embodiment comprises a first shaft 12, a second shaft 14, a first brake arm 16, and a second brake arm 18. The first shaft 12 defines a first pivot axis A1. The second shaft 14 defines a second pivot axis A2. The first brake arm 16 is pivotably mounted on the first shaft 12 with respect to the first pivot axis A1. The second brake arm 18 is pivotably mounted on the second shaft 14 with respect to the second pivot axis A2. In this embodiment, the first pivot axis A1 and the second pivot axis A2 are substantially parallel to each other. More specifically, the first pivot axis A1 and the second pivot axis A2 are parallel to each other. However, the first pivot axis A1 and the second pivot axis A2 cannot be parallel to each other.

[0036] The bicycle rim brake 10 comprises a first friction element 20 and a second friction element 22. The first brake arm 16 includes a first mounting part 24 for mounting the first friction element 20 to the first brake arm 16. The second brake arm 18 includes a second mounting part 26 for mounting the second friction element 22 to the second brake arm 18. The first mounting part 24 is arranged separately from the first shaft 12. The second mounting part 26 is arranged separately from the second shaft 14.

[0037] The first brake arm includes a wire fastening part 28 for attaching an inner wire 2a of a cable 2 to the first brake arm 16. The second brake arm 18 includes an outer height fastening part 30 for attaching an outer housing 2b of the control cable 2 to the second brake arm 18. Examples of the control cable 2 include a Bowden cable. A wire fastening structure (not shown) is provided on the wire fastening part 28. The wire fastening structure includes a nut that pivots on the wire fastening part 28 and a bolt that is screwed into the nut. Such a wire fastening structure is well known in the field of bicycles and is not explained in detail here for the sake of brevity. As in Fig. As shown in Figure 4, the first shaft 12 includes a first fixed end part 32, which is provided in a fixed position relative to a bicycle body 4. The second shaft 14 includes a second fixed end part 34, which is also provided in a fixed position relative to the bicycle body 4. In this embodiment, the bicycle rim brake 10 further comprises a base member 35, which is designed to be mounted on the bicycle body 4. The first shaft 12 and the second shaft 14 are provided on the base member 35.

[0038] The first fixed end part 32 of the first shaft 12 and the second fixed end part 34 of the second shaft 14 are attached to or fixed to the base link 35. More specifically, the bicycle rim brake 10 includes a first nut 36 and a second nut 38. The first nut 36 includes a first threaded hole 36a. The second nut 38 includes a second threaded hole 38a. The first fixed end part 32 includes external threads 32a, which engage with the first threaded hole 36a of the first nut 36. The second fixed end part 34 includes external threads 34a, which engage with the second threaded hole 38a of the second nut 38.

[0039] The first shaft 12 includes a first head part 40 and a first support part 42. The first support part 42 extends between the first fixed end part 32 and the first head part 40 to pivotally support the first brake arm 16. The first brake arm 16 is pivotally connected to the base member 35 via the first shaft 12 and the first nut 36. The first brake arm 16 has an opposing surface 16a, which is opposite the first fixed end part 32. The second shaft 14 includes a second head part 44 and a second support part 46. The second support part 46 extends between the second fixed end part 34 and the second head part 44 to pivotally support the second brake arm 18. The second brake arm 18 is pivotably coupled to the base member 35 via the second shaft 14 and the second nut 38.

[0040] In this embodiment, the bicycle body 4 includes a bicycle frame 4a and a front fork 4b, which is rotatably attached to the bicycle frame 4a. The base member 35 is designed to be mounted to one of the bicycle frames 4a and the front fork 4b. In this illustrated embodiment, the first fixed end part 32 and the second fixed end part 34 are fixed to the bicycle body 4a via the base member 35. However, the base member 35 can be omitted from the bicycle rim brake 10. In such an embodiment, the first fixed end part 32 and the second fixed end part 34 are fixed directly to the bicycle body 4.

[0041] In the present application, the following directional terms, such as front, rear, forward, backward, left, right, transverse, upward, and downward, as well as any similar directional terms, refer to directions determined based on a user (e.g., a rider) seated on a bicycle saddle (not shown) facing a handlebar (not shown). Accordingly, these terms, as used herein to describe the bicycle rim brake 10, should be interpreted relative to a bicycle equipped with the bicycle rim brake 10 being used in an upright riding position on a horizontal surface.

[0042] As in Fig. As shown in Figure 4, the base member 35 includes a mounting shaft 48, which is designed to be inserted into the bicycle body 4. In this embodiment, the mounting shaft 48 has a central axis A3. The base member 35 includes a base body 50. The base body 50 is mounted to the bicycle body 4 via the mounting shaft 48 in an assembly state in which the bicycle rim brake 10 is mounted to the bicycle body 4. More specifically, the base body 50 includes a mounting through-hole 52. The mounting shaft 48 includes a mounting head part 54 and a mounting shaft body 56. The mounting shaft body 56 includes a first shaft end 58 and a second shaft end 60, opposite the first shaft end 58. The mounting head part 54 is provided at the first shaft end 58.The base body 50 and the mounting head part 54 are designed to fit together in such a way that relative rotational movement between the base bodies 50 and the mounting head part 54 is prevented. The second shaft end 60 includes an external thread 60a. The base link 35 includes a locking element 61, which includes a threaded hole 61a. The external thread 60a of the mounting shaft 48 is designed to engage with the threaded hole 61a of the locking element 61. The base body 50 is coupled to the bicycle body 4 via the mounting shaft 48 and the locking element 61 by tightening the locking element 61.

[0043] The bicycle rim brake 10 comprises a first bearing unit 62 and a second bearing unit 63. The first bearing unit 62 is positioned between the first brake arm 16 and the base link 35 to pivotally support the first brake arm 16 relative to the first shaft 12 and the base link 35. The second bearing unit 63 is positioned between the second brake arm 18 and the base link 35 to pivotally support the second brake arm 18 relative to the second shaft 14 and the base link 35.

[0044] As in Fig. As can be seen in Figure 5, the first shaft 12 is arranged separately from the mounting shaft 48. The second shaft 14 is arranged separately from the mounting shaft 48 and the first shaft 12. The mounting shaft 48 is arranged separately from the first shaft 12 and the second shaft 14. The mounting shaft 48 is further away from the first mounting part 24 than the first shaft 12. The mounting shaft 48 is further away from the second mounting part 26 than the second shaft 14. The mounting shaft 48 is arranged such that a first distance L1 between the mounting shaft 48 and the first shaft 12 is substantially equal to a second distance L2 between the mounting shaft 48 and the second shaft 14 when viewed from a parallel direction D1 ( Fig. 4) considered parallel to a mounting shaft 48. In this embodiment, the first distance L1 is equal to the second distance L2. However, the first distance L1 can be different from the second distance L2. In this embodiment, as in Fig. As can be seen in Figure 4, the parallel direction D1 is parallel to the central axis A3 of the mounting shaft 48. The parallel direction D1 is parallel to the first pivot axis A1 and the second pivot axis A2.

[0045] As in Fig. As can be seen in Figure 6, the bicycle rim brake 10 includes a reinforcing element 64, which couples the first shaft 12 to the second shaft 14. As shown in Figure 6, the bicycle rim brake 10 includes a reinforcing element 64, which couples the first shaft 12 to the second shaft 14. Fig. As can be seen in Figure 4, the reinforcing element 64 is arranged such that the first brake arm 16 is positioned at least partially further from the first fixed end part 32 than the reinforcing element 64 is positioned at least partially between the first fixed end part 32 of the first shaft 12 and the opposite surface 16a of the first brake arm 16. The reinforcing element 64 is also arranged such that the second brake arm 18 is positioned at least partially closer to the second fixed end part 34 than the reinforcing element 64. In other words, the second brake arm 18 is positioned at least partially between the reinforcing element 64 and the second fixed end part 34 on the second shaft 14.

[0046] In this embodiment, the reinforcing element 64 is provided such that the first brake arm 16 is partially located further away from the first fixed end part 32 than the reinforcing element 64. The reinforcing element 64 is provided such that the second brake arm 18 is partially located closer to the second fixed end part 34 than the reinforcing element 64. However, the reinforcing element 64 can be provided such that the first brake arm 16 is completely located further away from the first fixed end part 32 than the reinforcing element 64. The reinforcing element 64 can be provided such that the second brake arm 18 is completely located closer to the second fixed end part 34 than the reinforcing element 64.

[0047] As in Fig. As shown in Figure 6, the amplifying element 64 includes a first coupling part 66, a second coupling part 68, and an intermediate part 70. The first coupling part 66 includes a first opening 66a. The second coupling part 68 includes a second opening 68a. The intermediate part 70 is located between the first coupling part 66 and the second coupling part 68. The first shaft 12 extends through the first opening 66a. The second shaft 14 extends through the second opening 68a.

[0048] In this embodiment, as in Fig. As can be seen in Figure 7, the intermediate part 70 has a bent or curved shape to prevent or avoid interaction between the reinforcing element 64 and a bicycle wheel 6. However, the shape of the reinforcing element 64 is not limited to this embodiment. The first brake arm 16 and the second brake arm 18 overlap at least partially with the reinforcing element 64 when viewed from the parallel direction D1 in a non-actuated state of the bicycle rim brake 10. Furthermore, the base element 35 overlaps at least partially with the reinforcing element 64 when viewed from the parallel direction D1.

[0049] As in the Fig. 4 and Fig. As shown in Figure 6, the bicycle rim brake 10 includes a first bushing 72, a second bushing 74, a third bushing 76, a fourth bushing 78, and a washer 79. The first bushing 72 is provided between the first shaft 12 and the first brake arm 16. The second bushing 74 is provided between the second shaft 14 and the second coupling part 68 of the reinforcement member 64. The third bushing 76 is provided between the first brake arm 16 and the first coupling part 66 of the reinforcement member 64. The fourth bushing 78 is provided between the second brake arm 18 and the second coupling part 68 of the reinforcement member 64. The washer 79 is provided between the first brake arm 16 and the second coupling part 66 of the reinforcement member 64. As shown in Figure 6. Fig. As can be seen in Figure 4, the bicycle rim brake 10 includes a fifth bushing 80 and a sixth bushing 81. The fifth bushing 80 is provided between the first shaft 12 and the first brake arm 16. The sixth bushing 81 is provided between the second shaft 14 and the second brake arm 18.

[0050] As in the Fig. 4 and Fig. As can be seen in Figure 8, the first brake arm 16 includes a groove 82. As shown in Figure 8. Fig. As can be seen in Figure 4, the first coupling part 66 is arranged in the groove 82. In this embodiment, the first coupling part 66 and the washer 79 are provided in the groove 82. The second coupling part 68 is provided between the second brake arm 18 and the second head part 44. As shown in the Fig. 4 and Fig. As can be seen in Figure 6, the second brake arm 18 includes a recess 84. The second coupling part 68 and the second head part 44 are arranged in the recess 84.

[0051] As in Fig. As can be seen in Figure 9, the first brake arm 16 and the second brake arm 18 are designed such that a space S1 is provided between the first brake arm 16 and the second brake arm 18 when an object approaches from a vertical direction (e.g., a direction D2 in the direction of the first brake arm 16 and the second brake arm 18). Fig. 7), viewed perpendicular to at least one of the first pivot axes A1 and the second pivot axes A2. The reinforcing element 64 is at least partially arranged in the space S1. In this embodiment, the reinforcing element 64 is partially arranged in the space S1. However, the reinforcing element can be / be arranged completely in the space S1.

[0052] As in Fig. As can be seen in Figure 4, the first brake arm 16 includes an offset part 86, which is positioned further from the bicycle body 4 than the second brake arm 18 when viewed from the perpendicular direction D2. The opposite surface of the offset part 86 is located at an outermost surface with respect to the first fixed end part 32 in the parallel direction D1. The reinforcing element 64 is positioned between the offset part 86 of the first brake arm 16 and the second brake arm 18. The second coupling part 68 is offset from a first plane P1 in which the first coupling part 66 is / will be positioned. The intermediate part 70 is positioned on the first plane P1. In this embodiment, the first plane P1 is defined in an axial center position of the first coupling part 66 and is perpendicular to the first pivot axis A1.

[0053] As in Fig. As can be seen in Figure 10, the first brake arm 16 includes a first contact part 88. The second brake arm 18 includes a second contact part 90, which is in contact with / comes into contact with the first contact part 88. As shown in Fig. As can be seen in Figure 8, the first brake arm 16 includes an arm body 92 and an intermediate link 94. The arm body 92 includes the first mounting part 24, the wire fastening part 28, and the groove 82. The intermediate link 94 is a separate link from the arm body 92.

[0054] As in Fig. As can be seen in Figure 4, the intermediate member 94 is pivotably mounted on the first shaft 12 with respect to the first pivot axis A1. The intermediate member 94 is closer to the first fixed end part 32 of the first shaft 12 than the arm body 92.

[0055] As in Fig. As shown in Figure 10, the intermediate element 94 includes the first contact part 88, an intermediate body 96, and a pin 98. The first contact part is rotatably attached to the intermediate body 96 about an axis of rotation A4 via the pin 98. Specifically, the first contact part 88 is provided as a roller. The second contact part 90 is provided as a cam surface. The first brake arm 16 includes an adjusting element 100. The arm body 92 includes an adjusting threaded hole 92a. The adjusting element 100 has an external thread 100a, which engages with the adjusting threaded hole 92a. The adjusting element 100 can contact the intermediate element 94. A rotation of the adjusting element 100 changes the position of the intermediate element 94 relative to the arm body 92 with respect to the first pivot axis A1.This changes a relative position between the first brake arm 16 and the second brake arm 18 into a state in which the first contact part 88 is in contact with the second contact part 90, changing a distance L3 which is defined between the first friction element 20 and the second friction element 22.

[0056] As in the Fig. 2 and Fig. As can be seen in Figure 4, the bicycle rim brake 10 includes a preload element 102, which is designed to preload the second brake arm 18 relative to the base element 35. As shown in Figure 4, the bicycle rim brake 10 includes a preload element 102, which is designed to preload the second brake arm 18 relative to the base element 35. Fig. As can be seen in Figure 4, the preload element 102 is mounted on the second shaft 14. As shown in Figure 4. Fig. As can be seen in Figure 3, the prestressing element 102 includes a wound body 104, a first end 106 and a second end 108. The wound body 104 is designed to withstand a prestressing force F1 ( Fig. 10) to generate. The first end 106 extends from the wound body 104. The second end 108 extends from the wound body 104. As in the Fig. 3 and Fig. As can be seen in Figure 4, the first end 106 engages with the base body 50 of the base member 35. In further detail, the first end 106 is inserted into a first fastening hole 50a of the base body 50. As shown in Figure 4, the first end 106 is inserted into a first fastening hole 50a of the base body 50. Fig. As can be seen in Figure 2, the first end 108 engages with the second brake arm 18 to apply the preload force F1 ( Fig. 10) to transfer to the second brake arm 18. The second end 108 is arranged in a recess (not shown) of the second brake arm 18. The recess faces the second friction element 22. A tension adjusting element is provided on at least one of the second brake arm 18 and the base element 35. In this embodiment, a tension adjusting element 110 is provided on the second brake arm 18 to change the position of the second end 108. The second brake arm 18 has an adjusting threaded hole 18a, which communicates with the recess. The tension adjusting element 110 has external threads 110a, which engage with the adjusting threaded hole 18a. The tension adjusting element 110 is in contact with the second end 108. A rotation of the tension adjusting element 110 changes the position of the second end 108 relative to the second brake arms 18. The preload force F1 ( Fig. 10) is modified according to the position of the second end 108. As in Fig. As can be seen in Figure 10, the preload force F1 is transmitted via the second contact part 90 and the first contact part 88 in that order, and the preload force F1 is applied to the first brake arm 16 as a preload force F2. Additionally or instead of the tension adjusting element 110, a tension adjusting element can be provided on the base element 35 in the same way as the tension adjusting element 110 and the adjusting threaded hole 18a.

[0057] The bicycle rim brake 10 includes the following features. (1) Since the reinforcing element 64 is designed to couple the first shaft 12 and the second shaft 14, it is possible to improve the strength of the bicycle rim brake 10 with a simple structure. Furthermore, the reinforcing element 64 is positioned such that the first brake arm 16 is located at least partially further from the first fixed end part 32 than the reinforcing element 64. Consequently, the reinforcing element 64 can absorb the force applied to the first shaft 12 at a point further from the first fixed end part 32 of the first shaft 12. This can effectively improve the strength and appearance of the bicycle rim brake 10. (2) The first coupling part 66 is designed to be / be arranged in the groove 82. Accordingly, it is easily possible to arrange the first coupling part 66 of the reinforcing element 64 at a position further away from the first fixed end part 32. (3) The reinforcing element 64 is provided such that the second brake arm 18 is arranged at least partially closer to the second fixed end part 34 than the reinforcing element 64. Accordingly, it is possible to make the bicycle rim brake 10 more compact and to improve the appearance of the bicycle rim brake 10 while the bicycle rim brake 10 incorporates the reinforcing element 64. (4) The coupling part 68 is designed to be positioned between the second brake arm 18 and the second head part 44. Accordingly, it is possible to couple the second coupling part 68 of the reinforcing element 64 to the second brake arm 18 and the second head part 44 of the second shaft 14. Accordingly, it is possible to effectively improve the strength of the bicycle rim brake 10. (5) The second coupling part 68 and the second head part 44 are arranged in the recess 84 of the second brake arm 18. Accordingly, it is possible to make the bicycle rim brake 10 more compact, while the bicycle rim brake 10 incorporates the reinforcing element 64. (6) The first brake arm 16 and the second brake arm 18 are designed such that the space between the first brake arm 16 and the second brake arm 18 is provided as a single unit when viewed from the vertical direction D2. The reinforcing element 64 is at least partially located in the space S1. Accordingly, it is possible to make the bicycle rim brake 10 more compact while the bicycle rim brake 10 incorporates the reinforcing element 64. (7) The reinforcing element 64 is arranged between the offset part 86, or offset part of the first brake arm 16, and the second brake arm 18. Accordingly, it is possible to make the bicycle rim brake 10 more compact while incorporating the reinforcing element 64. (8) The first shaft 12 and the second shaft 14 are provided on the base link 35. Accordingly, it is possible to easily attach the bicycle rim brake 10 to the bicycle body 4 via the base link 35. (9) The second coupling part 68 is offset from the first level P1, on which the first coupling part 66 is / will be arranged. Accordingly, it is possible to arrange the reinforcing element 64 along the shapes of the first brake arm 16 and the second brake arm 18. (10) Since the reinforcing element 64 is designed to couple the first shaft 12 and the second shaft 14, it is possible to improve the strength of the bicycle rim brake 10 with a simple structure. Furthermore, since the second contact part 90 of the second brake arm 18 is designed to come into contact with the first contact part 88 of the first brake arm 16, it is possible to move the first brake arm 16 and the second brake arm 18 together. This can simplify the structure of the bicycle rim brake 10. Second embodiment

[0058] A bicycle rim brake 210 according to a second embodiment is described below with reference to Fig. 11. The bicycle rim brake 210 has the same configuration as the bicycle rim brake 10, except for the reinforcing element 64 and its arrangement. Consequently, the elements that have essentially the same reference numerals as those in the preceding embodiment are designated with the same reference numerals and are not described and / or illustrated again in detail herefor the sake of brevity.

[0059] As in Fig.As shown in Figure 11, the bicycle rim brake 210 includes a reinforcing element 264. The reinforcing element 264 has essentially the same structure as the reinforcing element 64 in the first embodiment. The reinforcing element 264 comprises a first coupling part 266, a second coupling part 268, and an intermediate part 270. In this embodiment, the first coupling part 266 is offset from the intermediate part 270 and the second coupling part 268. The first coupling part 266, the second coupling part 268, and the intermediate part 270 have essentially the same structure as those of the first coupling part 66, the second coupling part 68, and the intermediate part 70 in the first embodiment; consequently, for the sake of brevity, they are not described or illustrated in detail here. In this embodiment, an arm body 292 of the first brake arm 216 has a groove for arranging the coupling part 266.The first coupling part 266 is arranged between the arm body 292 and the intermediate element 94, such that the first coupling part 266 is in contact with both, the arm body 292 and the intermediate element 94.

[0060] 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.

[0061] It will be apparent to a person skilled in the art of bicycles from this disclosure that the structures of the foregoing embodiments can be combined, at least partially.

Claims

Bicycle rim brake (10) comprising: a first shaft (12) defining a first pivot axis (A1), wherein the first shaft (12) includes a first fixed end part (32) which is / will be provided fixed with respect to a bicycle body (4); a second shaft (14) defining a second pivot axis (A2), wherein the second shaft (14) includes a second fixed end part (34) which is / will be provided fixed with respect to the bicycle body (4); a first brake arm (16) which is / will be provided pivotably on the first shaft (12) with respect to the first pivot axis (A1); a second brake arm (18) which is / will be provided pivotably on the second shaft (14) with respect to the second pivot axis (A2);and a reinforcing element (64) which couples the first shaft (12) to the second shaft (14), wherein the reinforcing element (64) is / is provided such that the first brake arm (16) is at least partially further away from the first fixed end part (32) than the reinforcing element (64), and such that the second brake arm (18) is / is arranged at least partially closer to the second fixed end part (34) than the reinforcing element (64). Bicycle rim brake (10) comprising: a first shaft (12) defining a first pivot axis (A1), wherein the first shaft (12) includes a first fixed end part (32) which is / will be provided fixed with respect to a bicycle body (4); a second shaft (14) defining a second pivot axis (A2), wherein the second shaft (14) includes a second fixed end part (34) which is / will be provided fixed with respect to the bicycle body (4); a first brake arm (16) which is / will be provided pivotably on the first shaft (12) with respect to the first pivot axis (A1), wherein the first brake arm (16) has an opposing surface (16a) which is opposite the first fixed end part (32); a second brake arm (18) which is / will be provided pivotably on the second shaft (14) with respect to the second pivot axis (A2);and a reinforcing element (64) which couples the first shaft (12) to the second shaft (14), wherein the reinforcing element (64) is / will be arranged at least partially between the first fixed end part (32) of the first shaft (12) and the opposite surface (16a) of the first brake arm (16), and such that the second brake arm (18) is / will be arranged at least partially closer to the second fixed end part (34) than the reinforcing element (64). Bicycle rim brake (10) comprising: a base member (35) which includes a mounting shaft (48); a first shaft (12) which is / is provided separately from the mounting shaft (48) on the base member (35); a second shaft (14) which is / is provided separately from the mounting shaft (48) and the first shaft (12) on the base member (35); a first brake arm (16) which is / is provided pivotably on the first shaft (12), wherein the first brake arm (16) includes a first contact part (88); a second brake arm (18) which is / is provided pivotably on the second shaft (14), wherein the second brake arm (18) includes a second contact part (90) which is / comes into contact with the first contact part (88);and a reinforcing element (64) which couples the first shaft (12) to the second shaft (14), wherein the second shaft (14) includes a second fixed end part (34), and wherein the reinforcing element (64) is / is provided such that the second brake arm (18) is / is arranged at least partially closer to the second fixed end part (34) than the reinforcing element (64). Bicycle rim brake (10) according to claim 3, in which the first shaft (12) includes a first fixed end part (32) which is / will be fixed to the base member (35); the first brake arm (16) has an opposite surface (16a) which is opposite to the first fixed end part (32); and the reinforcing member (64) is / will be arranged at least partially between the first fixed end part (32) of the first shaft (12) and the opposite surface (16a) of the first brake arm (16). Bicycle rim brake (10) according to claim 3, in which the first shaft (12) includes a first fixed end part (32) which is / will be fixed to the base member (35); the reinforcement member (64) is provided such that the first brake arm (16) is / will be arranged at least partially further from the first fixed end part (32) than the reinforcement member (64). Bicycle rim brake (10) according to claim 4 or 5, wherein the second shaft (14) includes a second fixed end part (34) which is / is provided fixed with respect to the bicycle body (4). Bicycle rim brake (10) according to claim 1 or 2, further comprising: a base member (35), wherein the first shaft (12) and the second shaft (14) are provided on the base member (35). Bicycle rim brake (10) according to claim 7, wherein the base member (35) includes a mounting shaft (48), the mounting shaft (48) being / being arranged separately from the first shaft (12) and the second shaft (14). Bicycle rim brake (10) according to one of claims 3 to 8, in which the mounting shaft (48) is arranged such that a first distance (L1) between the mounting shaft (48) and the first shaft (12) is essentially equal to a second distance (L2) between the mounting shaft (48) and the second shaft (14) when viewed from a parallel direction (D1) parallel to the mounting shaft (48). Bicycle rim brake (10) according to one of claims 3 to 9, wherein the first brake arm (16) includes a first mounting part (24) for mounting a first friction element (20) to the first brake arm (16); the second brake arm (18) includes a second mounting part (26) for mounting a second friction element (22) to the second brake arm (18); the mounting shaft (48) is further away from the first mounting part (24) than the first shaft (12); and the mounting shaft (48) is further away from the second mounting part (26) than the second shaft (14). Bicycle rim brake (10) according to claim 10, wherein the second shaft (14) includes: a second head part (44); and a second support part (46) which extends between the second fixed end part (34) and the second head part (44) in order to pivotably support the second brake arm (18); and the reinforcing member (64) includes a second coupling part (68) which is / will be arranged between the second brake arm (18) and the second head part (44). Bicycle rim brake (10) according to claim 11, in which the second brake arm (18) includes a recess (84); and the second coupling part (68) and the second head part (44) are / will be arranged in the recess (84). Bicycle rim brake (10) according to one of claims 1 to 12, wherein the first brake arm (16) includes a groove (82); and the reinforcing member (64) includes a first coupling part (66) which is / will be arranged in the groove (82). Bicycle rim brake (10) according to one of claims 1 to 13, in which the first brake arm (16) and the second brake arm (18) are designed such that a space (S1) is provided between the first brake arm (16) and the second brake arm (18) when viewed from a perpendicular direction (D2), perpendicular to at least one of the first pivot axis (A1) and the second pivot axis (A2); and the reinforcing member (64) is arranged at least partially in the space (S1). Bicycle rim brake (10) according to one of claims 1 to 14, wherein the first brake arm (16) includes an offset part (86) which is / will be arranged further from the bicycle body (4) than the second brake arm (18) when viewed from a vertical direction (D2), perpendicular to at least one of the first pivot axis (A1) and the second pivot axis (A2); and the reinforcing member (64) is / will be arranged between the offset part (86) of the first brake arm (16) and the second brake arm (18). Bicycle rim brake (10) according to one of claims 1 to 15, wherein the first pivot axis (A1) and the second pivot axis (A2) are essentially parallel to each other. Bicycle rim brake (10) according to one of claims 1 to 16, wherein the reinforcing element (64) comprises: a first coupling part (66) which includes a first opening (66a); a second coupling part (68) which includes a second opening (68a); an intermediate part (70) which is provided between the first coupling part (66) and the second coupling part (68); wherein the first shaft extends through the first opening (66a) and the second shaft extends through the second opening (68a). Bicycle rim brake (10) according to claim 17, in which the intermediate part (70) is / will be arranged on the first plane (P1) and / or the second coupling part (68) is / will be offset from a first plane (P1) on which the first coupling part (66) is / will be arranged. Bicycle rim brake (10) according to one of claims 1 to 18, wherein the first brake arm (16) includes a wire fastening part (28) for fastening an inner wire (2a) of a control cable (2) to the first brake arm (16); and the second brake arm (18) includes an outer housing fastening part (30) for fastening an outer housing (2b) of the control cable (2) to the second brake arm (18).

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