Electric derailleur

Abstract

The utility model provides an electric derailleur, which is arranged on a frame of a bicycle and comprises a fixed part, a movable part, a first connecting rod, a second connecting rod, four pivots and a battery body, the fixing part is used for being attached to a frame of a bicycle; the movable part moves relative to the fixed part; the first connecting rod is pivotally connected with the fixed part and the movable part; the second connecting rod is pivotally connected with the fixed part and the movable part, and the fixed part, the movable part, the first connecting rod and the second connecting rod are pivotally connected to form a four-connecting-rod structure which is used for enabling the movable part to move relative to the fixed part; the pivots are respectively positioned between the fixed part and the second connecting rod, between the second connecting rod and the movable part, between the movable part and the first connecting rod, and between the first connecting rod and the fixed part, and one pivot is provided with a battery cavity; the battery body is arranged in the battery cavity.

Description

Technical Field

[0001] This application relates to the rear derailleur of a bicycle; in particular, it refers to an electric derailleur. Background Technology

[0002] Traditional electric derailleurs are typically attached directly to the external surface of a four-bar linkage. While this design is simple, it exposes the battery assembly, making it susceptible to damage from foreign objects or impacts. Furthermore, this design increases the overall size of the derailleur, negatively impacting the bicycle's appearance and maneuverability.

[0003] Therefore, designing an electric derailleur that can not only effectively reduce the impact of external impacts on the battery, but also improve structural stability and optimize volume configuration is an urgent problem to be solved. Utility Model Content

[0004] The technical problem to be solved by this application is to provide an electric derailleur that can effectively reduce the impact of external impacts on the battery.

[0005] To achieve the above objectives, this application provides an electric derailleur for mounting on a bicycle frame, comprising: a fixed part for attachment to the bicycle frame; a movable part for movement relative to the fixed part; a first link pivotally connecting the fixed part and the movable part; a second link pivotally connecting the fixed part and the movable part; wherein the fixed part, the movable part, the first link, and the second link are pivotally connected in a four-bar linkage structure to allow the movable part to move relative to the fixed part; four pivots are respectively located between the fixed part and the second link, between the second link and the movable part, between the movable part and the first link, and between the first link and the fixed part, wherein one of the pivots has a battery cavity; and a battery unit disposed in the battery cavity.

[0006] The advantage of this application is that the battery body is housed in the battery cavity of one of the pivots, thereby achieving effective integration of the battery body and effectively reducing the impact of external impacts on the battery body.

[0007] The other effects and embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a perspective view of an electric derailleur according to a preferred embodiment of this application;

[0010] Figure 2 This is a top view of the electric derailleur of the preferred embodiment described above;

[0011] Figure 3 This is a perspective view of the electric derailleur of the preferred embodiment described above from another angle.

[0012] Figure 4 This is a perspective view of the electric derailleur of the preferred embodiment described above from another angle.

[0013] Figure 5 This is a partial exploded view of the electric derailleur of the preferred embodiment described above.

[0014] Figure 6 This is another exploded view of the electric derailleur of the preferred embodiment described above;

[0015] Figure 7 for Figure 3 Enlarged view of circled area B;

[0016] Figure 8 for Figure 4 Enlarged view of circled area C;

[0017] Figure 9 for Figure 2 A sectional view along the AA direction;

[0018] Figure 10 for Figure 9 Enlarged view of circled area D.

[0019] Symbol Explanation

[0020] 100: Electric derailleur; 10: Fixing part

[0021] 12: First pivot ring; 14: Second pivot ring

[0022] 20: Movable part; 30: First link

[0023] 32: Third pivot ring; 34: Fourth pivot ring

[0024] 40: Second link; 50: Pivot

[0025] 52: First pivot; 522: Battery cavity

[0026] 5222: Opening; 524: Positioning section

[0027] 54: Second pivot 60: Battery cell

[0028] 62: Battery casing 622: End cap

[0029] 6222: Terminal opening; 64: Battery body

[0030] 70: Control module; 72: Housing

[0031] 722: Perforation; 74: Circuit Board

[0032] 742: Contact point; 76: Charging interface

[0033] 80: Derailleur section; 90: Positioning component

[0034] 91: Stopping component Detailed Implementation

[0035] In the embodiments described below, the positional relationships include: up, down, left, and right. Unless otherwise specified, they are all based on the direction shown by the components in the diagram.

[0036] Please refer to Figure 1 As shown, a preferred embodiment of this application discloses an electric derailleur 100 for mounting on a bicycle frame (not shown). The electric derailleur 100 includes a fixed part 10, a movable part 20, a first link 30, a second link 40, four pivots 50, a battery unit 60, a control module 70, a derailleur part 80, and a plurality of positioning members 90.

[0037] Please cooperate. Figure 1 and Figure 2 The fixed part 10, movable part 20, first link 30, and second link 40 are pivotally connected to form a four-bar linkage. One end of the fixed part 10 is attached to the bicycle frame to provide a stable mounting point for the electric derailleur 100. The movable part 20 is movable relative to the fixed part 10 to achieve gear shifting. The two ends of the first link 30 are pivotally connected to the fixed part 10 and the movable part 20, respectively. The two ends of the second link 40 are pivotally connected to the fixed part 10 and the movable part 20, respectively, to allow the movable part 20 to move relative to the fixed part 10. The second link 40 is closer to the frame than the first link 30.

[0038] like Figure 3 As shown, more specifically, the fixing part 10 has a first pivot ring 12 and a second pivot ring 14 coaxially arranged at one end adjacent to the first connecting rod 30, with the first pivot ring 12 located above the second pivot ring 14.

[0039] like Figure 3As shown, the first connecting rod 30 has a third pivot ring 32 and a fourth pivot ring 34 coaxially arranged at one end near the fixed part 10. The third pivot ring 32 is located above the fourth pivot ring 34. The third pivot ring 32 is located above the first pivot ring 12, and the second pivot ring 14 is located above the fourth pivot ring 34.

[0040] like Figure 1 As shown, four pivots 50 are respectively located between the fixed part 10 and the second link 40, between the second link 40 and the movable part 20, between the movable part 20 and the first link 30, and between the first link 30 and the fixed part 10. In this way, these pivots 50 can provide rotational support between the links, ensuring the stability and flexibility of the overall mechanism's movement.

[0041] like Figure 1 , Figure 5 , Figure 6 and Figure 9 As shown, the pivots 50 are a first pivot 52 and three second pivots 54. The first pivot 52 is defined as a tubular structure having a battery cavity 522, and each of the second pivots 54 is a rod-shaped structure.

[0042] like Figure 3 and Figure 9 As shown, the first pivot 52 is located between the first connecting rod 30 and the fixed part 10, and the first pivot 52 is disposed in the first pivot ring 12, the second pivot ring 14, the third pivot ring 32 and the fourth pivot ring 34, thereby achieving stable support and flexible rotational connection.

[0043] In this embodiment, the first pivot 52 is located between the first link 30 and the fixed part 10. In other embodiments, the first pivot 52 may also be located between the fixed part 10 and the second link 40, between the second link 40 and the movable part 20, or between the movable part 20 and the first link 30, to adapt to different mechanism requirements.

[0044] like Figure 6 and Figure 9 As shown, the first pivot 52 includes a battery cavity 522 and a positioning part 524. The battery cavity 522 is formed inside the first pivot 52, and has an opening 5222 for accommodating a battery unit 60. This not only provides support and rotation functions between the first link 30 and the fixing part 10, but also achieves effective integration of the battery unit 60, thereby simplifying the mechanism structure, improving space utilization efficiency, and effectively reducing the impact of external impacts on the battery unit 60.

[0045] like Figures 7 to 9 As shown, the positioning part 524 is a protruding ring disposed on the outer surface of the first pivot 52, and the positioning part 524 is disposed above the third pivot ring 32.

[0046] like Figure 9 As shown, the battery unit 60 includes a battery housing 62 and a battery body 64. The battery housing 62 is housed in the battery cavity 522 of the first pivot 52, and the battery body 64 is housed within the battery housing 62. Figures 7 to 9 As shown, one end of the battery casing 62 has an end cap 622 protruding from an opening 5222 in the battery cavity 522. Figure 10 As shown, the end cap 622 has a terminal opening 6222 located on the bottom surface of the end cap 622, allowing one terminal (not shown) of the battery body 64 to be exposed, enabling electrical connection with an external circuit. This provides robust protection for the battery body 64 while ensuring stable connection to the external circuit and convenient operation.

[0047] like Figure 4 , Figure 7 and Figure 8 As shown, the control module 70 includes a housing 72, a circuit board 74, and a charging interface 76. The housing 72 extends along the extension direction of the first connecting rod 30, and one end of the housing 72 is disposed above the positioning portion 524 of the first pivot 52. One end of the housing 72 has a through hole 722, in which the end cap 622 of the battery housing 62 is fixed. This secures the control module 70 to the battery unit 60.

[0048] like Figures 8 to 10 As shown, the outer casing 72 covers the circuit board 74, and one end of the circuit board 74 is provided with a contact 742 for electrical connection with the terminal of the battery body 64. By positioning the circuit board 74 at one end of the battery cell 60, the current conduction path is shortened, effectively reducing current loss and further improving the electrical energy transmission efficiency and overall system performance.

[0049] like Figure 8 and Figure 9 As shown, one end of the charging interface 76 is connected to the end of the circuit board 74 away from the contact 742, and the other end of the charging interface 76 protrudes outward through the housing 72 to charge external devices. By positioning the charging interface 76 near the battery cell 60, the current transmission distance is effectively shortened, thereby reducing current loss and further improving charging efficiency and system performance.

[0050] like Figure 1 and Figure 2 As shown, the derailleur 80 is pivotally connected to the movable part 20 and can move relative to the fixed part 10 with the movable part 20. By moving the movable part 20 and the derailleur 80 relative to the fixed part 10, one chain (not shown) of the bicycle can move from one sprocket (not shown) to another sprocket (not shown), thereby achieving smooth gear shifting.

[0051] like Figure 6 , Figure 8 and Figure 9 As shown, the positioning elements 90 are arranged around the battery unit 60. Each positioning element 90 sequentially passes through the third pivot ring 32 of the first link 30, the positioning portion 524 of the first pivot 52, and the housing 72 of the control module 70. This securely connects the first pivot 52, the first link 30, and the control module 70, and maintains a fixed position of the first pivot 52 and the control module 70 relative to the first link 30; that is, the first pivot 52 and the control module 70 are positioned on the first link 30. Furthermore, this ensures that the control module 70 maintains a fixed position relative to the battery unit 60 during use of the electric derailleur 100, thereby achieving stable power supply from the battery unit 60 to the control module 70 and ensuring the accuracy and stability of signal transmission.

[0052] In this embodiment, there are two positioning elements 90. In other embodiments, there may be one or more positioning elements 90.

[0053] like Figure 6 and Figure 9 As shown, in this embodiment, the first pivot 52 has a stop 91, which is attached to an outer side of the first pivot 52 and located on the bottom side of the fourth pivot ring 34 of the first connecting rod 30, to limit the displacement of the first pivot 52 relative to the fourth pivot ring 34. Through the cooperation of the stop 91 and the positioning part 524, the first pivot 52 is prevented from displacing relative to the fixing part 10 and the first connecting rod 30 along the longitudinal axis of the first pivot 52, thereby achieving a more stable pivoting connection between the fixing part 10 and the first connecting rod 30 via the first pivot 52. In other embodiments, the position of the stop 91 can be adjusted along the longitudinal axis of the first pivot 52 and can be located on the bottom side of the first pivot ring 12, the second pivot ring 14, or the third pivot ring 32 to limit the displacement of the first pivot 52 relative to the first pivot ring 12, the second pivot ring 14, or the third pivot ring 32. By cooperating with the stop 91 and the positioning part 524, displacement of the first pivot 52 relative to the fixed part 10 and the first connecting rod 30 along the longitudinal axis of the first pivot 52 can be prevented, further ensuring the stability of the overall structure.

[0054] In this embodiment, the first pivot 52 is located between the first link 30 and the fixed part 10, and the control module 70 and the movable part 20 are fixed to each other. In other embodiments, the control module 70 may also be fixed to the fixed part 10. In yet another embodiment, when the first pivot 52 is located between the fixed part 10 and the second link 40, between the second link 40 and the movable part 20, or between the movable part 20 and the first link 30, the control module 70 is relatively fixed to the fixed part 10, the movable part 20, the first link 30, or the second link 40 of the adjacent first pivot 52.

[0055] In summary, the electric derailleur 100 of this application, by housing the battery unit 60 through the battery cavity 522 of the first pivot 52, not only achieves effective integration of the battery unit 60 but also effectively reduces the impact of external impacts on the battery unit 60. With the circuit board 74 located at one end of the battery unit 60 and the charging interface 76 located adjacent to the battery unit 60, the current transmission distance is effectively shortened, thereby reducing current loss and further improving charging efficiency and system performance.

[0056] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of this application, and are not intended to limit the implementation methods of the technology of this application in any way. Any person skilled in the art may make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in this application, but these should still be regarded as the technology or embodiments that are substantially the same as those of this application.

Claims

1. An electric derailleur for mounting on a bicycle frame, characterized in that, The electric derailleur includes: A fixing part for attaching to the frame of the bicycle; A movable part for moving relative to the fixed part; A first link pivotally connects the fixed part and the movable part; A second link pivotally connects the fixed part and the movable part; wherein the fixed part, the movable part, the first link and the second link are pivotally connected to form a four-bar linkage structure, which is used to move the movable part relative to the fixed part; Four pivots are respectively located between the fixed part and the second link, between the second link and the movable part, between the movable part and the first link, and between the first link and the fixed part, wherein one of the pivots has a battery cavity; and A battery body is disposed in the battery cavity.

2. The electric derailleur according to claim 1, characterized in that, The pivot having the battery cavity is defined as a first pivot, which is located between the fixed part and the second link, or between the first link and the fixed part.

3. The electric derailleur according to claim 1, characterized in that, The pivot having the battery cavity is defined as a first pivot, the first pivot being a tubular structure and having the battery cavity inside, the battery cavity having an opening.

4. The electric derailleur according to claim 1, characterized in that, It includes a control module electrically connected to the battery body; the pivot having the battery cavity is defined as a first pivot; the control module is fixed relative to the fixed part, the movable part, the first link or the second link adjacent to the first pivot.

5. The electric derailleur according to claim 4, characterized in that, The control module includes a housing, a circuit board, and a charging interface. The housing covers the circuit board, which is electrically connected to the battery body. One end of the charging interface is connected to the circuit board, and the other end passes through the housing and protrudes outward.

6. The electric derailleur according to claim 5, characterized in that, The first pivot is located between the first link and the fixed part, and the first pivot and the control module are positioned on the first link.

7. The electric derailleur according to claim 5, characterized in that, The system includes a battery unit; the battery unit includes a battery housing and a battery body, the battery housing is housed in the battery cavity of the first pivot, and the battery body is housed in the battery housing; wherein, one end of the battery housing has an end cap protruding from an opening in the battery cavity; the housing of the control module has a through hole; wherein the end cap of the battery housing is fixed in the through hole.

8. The electric derailleur according to claim 7, characterized in that, The end cap has a terminal opening to expose one terminal of the battery body; the circuit board includes a contact for connecting to the terminal of the battery body.

9. The electric derailleur according to claim 6, characterized in that, The fixing part has a first pivot ring and a second pivot ring coaxially arranged at one end of the first connecting rod; the first connecting rod has a third pivot ring and a fourth pivot ring coaxially arranged at one end of the fixing part; wherein the first pivot is disposed in the first pivot ring, the second pivot ring, the third pivot ring and the fourth pivot ring.

10. The electric derailleur according to claim 9, characterized in that, The first pivot has a positioning part located between the third pivot ring of the first link and the control module; the electric derailleur includes at least one positioning element for fixing the control module to the first link.

11. The electric derailleur according to claim 9, characterized in that, The first pivot has a stop for limiting displacement of the first pivot relative to the first pivot ring, the second pivot ring, the third pivot ring, or the fourth pivot ring.

Images