Adjustable pedal transmission mechanism of electric bicycle

Abstract

The utility model relates to the technical field of electric bicycles, and discloses an adjustable pedal transmission mechanism of an electric bicycle, which comprises a first chain link, a connecting rod is rotatably connected in the first chain link, a buffer component is arranged in the first chain link, a second chain link is sleeved on the outer surface of the connecting rod, and the buffer component is arranged in the second chain link. And the outer surface, located on the side wall of the second chain link, of the connecting rod is sleeved with a connecting piece, the outer surface of the connecting rod is fixedly connected with a fixing frame, and a dismounting mechanism is arranged in the fixing frame. According to the chain, through the arrangement of the first chain link, the second chain link, the connecting piece, the fixing frame, the push plate, the disassembling block and the positioning spring, the effect of rapidly disassembling and replacing the first chain link, the second chain link and the connecting piece is achieved, and the situation that tools need to be used for assistance in the disassembling process, and consequently the disassembling and maintaining efficiency is reduced is avoided; and the working efficiency of chain disassembly and maintenance is improved.

Description

An adjustable pedal transmission mechanism for electric bicycles Technical Field

[0001] This utility model relates to the field of electric bicycle technology, and in particular to an adjustable pedal transmission mechanism for electric bicycles. Background Technology

[0002] An electric bicycle is a vehicle that uses a battery as an auxiliary power source and is based on a regular bicycle but is equipped with a motor, controller, battery, throttle, brake lever, and other control components and a display instrument system. The transmission mechanism is a component or mechanism that transmits power from one part of a machine to another, causing the machine or machine parts to move or operate.

[0003] The existing technology has the following drawbacks: the transmission mechanism of existing electric bicycles is usually a chain. During use, some chains become loose or have abnormal tension due to wear, stretching, etc. The loosened chain needs to be disassembled and repaired. The chain disassembly process requires force, which hinders the disassembly process in outdoor areas where there are no suitable tools, thereby reducing the efficiency of chain disassembly and replacement. To solve the above problems, an adjustable pedal transmission mechanism for electric bicycles is proposed. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides an adjustable pedal transmission mechanism for electric bicycles, aiming to improve the problem of inconvenient chain disassembly in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable pedal transmission mechanism for an electric bicycle, comprising a first chain link, a connecting rod rotatably connected inside the first chain link, a buffer assembly provided inside the first chain link, a second chain link sleeved on the outer surface of the connecting rod, a connecting piece sleeved on the side wall of the second chain link on the outer surface of the connecting rod, a fixing frame fixedly connected to the outer surface of the connecting rod, and a disassembly mechanism provided inside the fixing frame;

[0006] The disassembly mechanism includes a push plate, which is slidably connected inside the fixed frame. The side wall of the push plate is elastically connected to the inner side wall of the fixed frame through a positioning spring. A disassembly block is fixedly connected to the side wall of the push plate.

[0007] As a further description of the above technical solution:

[0008] The buffer assembly includes a limiting rod, which is fixedly connected inside the first link. A buffer block is slidably connected to the outer surface of the limiting rod. A buffer rod is hinged to the side wall of the buffer block. A protective plate is hinged to the end of the buffer rod. The side wall of the buffer block is elastically connected to the inner side wall of the first link through a buffer spring.

[0009] As a further description of the above technical solution:

[0010] The disassembly block is slidably connected to the side wall of the fixed frame.

[0011] As a further description of the above technical solution:

[0012] The connector has a disassembly hole on its side wall, and the disassembly block is inserted into the disassembly hole.

[0013] As a further description of the above technical solution:

[0014] The second link and the connector both have connecting holes inside that are adapted to the size of the connecting rod.

[0015] As a further description of the above technical solution:

[0016] The top of the connecting hole has a connecting groove that matches the size of the fixing frame.

[0017] As a further description of the above technical solution:

[0018] The push plate has a movable block on its side wall, which is slidably connected to the side wall of the fixed frame.

[0019] As a further description of the above technical solution:

[0020] The protective plate is arc-shaped, and its inner sidewall is in contact with the outer surface of the connecting rod.

[0021] As a further description of the above technical solution;

[0022] The first link has a buffer groove inside, and the limiting rod is fixedly connected inside the buffer groove.

[0023] As a further description of the above technical solution:

[0024] Both the buffer rod and the buffer block are slidably connected inside the buffer groove.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, the arrangement of the first chain link, the second chain link, the connector, the fixing frame, the push plate, the disassembly block and the positioning spring achieves the effect of quick disassembly and replacement between the first chain link, the second chain link and the connector, avoiding the need to use tools for assistance during the disassembly process, which would slow down the disassembly and maintenance efficiency, and thus improving the work efficiency of chain disassembly and maintenance.

[0027] 2. In this utility model, the connection rod, protective plate, buffer rod, buffer block, limit rod and buffer spring are designed to protect the connection rod and prevent it from wearing out due to vibration during long-term use, thereby improving the safety of the connection rod during use. Attached Figure Description

[0028] Figure 1 is a three-dimensional structural diagram of the first link, the second link, and the connecting member of an adjustable pedal transmission mechanism for an electric bicycle proposed in this utility model.

[0029] Figure 2 is a cross-sectional view of the first link of an adjustable pedal transmission mechanism for an electric bicycle proposed in this utility model.

[0030] Figure 3 is an enlarged schematic diagram of the internal structure of part A in Figure 2 of an adjustable pedal transmission mechanism for an electric bicycle proposed in this utility model.

[0031] Figure 4 is an enlarged schematic diagram of the internal structure of part B in Figure 2 of an adjustable pedal transmission mechanism for an electric bicycle proposed in this utility model.

[0032] Legend:

[0033] 1. First link; 2. Second link; 3. Connector; 4. Connecting rod; 5. Disassembly mechanism; 51. Push plate; 52. Disassembly block; 53. Positioning spring; 6. Buffer assembly; 61. Protective plate; 62. Buffer rod; 63. Buffer block; 64. Limiting rod; 65. Buffer spring; 7. Fixing frame. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Referring to Figures 1-3, one embodiment of this utility model is provided: an adjustable pedal transmission mechanism for an electric bicycle, including a first chain link 1, a connecting rod 4 rotatably connected inside the first chain link 1, and a second chain link 2 sleeved on the outer surface of the connecting rod 4. The connecting rod 4 ensures a stable connection between the first chain link 1 and the second chain link 2. A connecting member 3 is sleeved on the side wall of the second chain link 2 on the outer surface of the connecting rod 4. Both the second chain link 2 and the connecting member 3 have connecting holes that are adapted to the size of the connecting rod 4. The connecting holes allow the connecting rod 4 to pass through the second chain link 2 and the connecting member 3, thus satisfying the connection between the second chain link 2, the connecting member 3, and the first chain link 1.

[0036] Furthermore, a fixing frame 7 is fixedly connected to the outer surface of the connecting rod 4. A connecting groove adapted to the size of the fixing frame 7 is opened at the top of the connecting hole. The setting of the connecting groove allows the connecting rod 4 to pass through the connecting hole and drive the fixing frame 7 to pass through the second link 2 and the connector 3. At the same time, the fixing frame 7 is limited to the side wall of the connector 3 to ensure a stable connection between the first link 1, the second link 2 and the connector 3. A buffer component 6 is provided inside the first link 1, and a disassembly mechanism 5 is provided inside the fixing frame 7.

[0037] Referring to Figures 2-3, the disassembly mechanism 5 includes a push plate 51, which is slidably connected inside the fixed frame 7. A movable block is provided on the side wall of the push plate 51. The movable block passes through and is slidably connected to the side wall of the fixed frame 7. Pushing the movable block to slide inside the fixed frame 7 causes the push plate 51 to slide inside the fixed frame 7. The side wall of the push plate 51 is elastically connected to the inner side wall of the fixed frame 7 through a positioning spring 53. Pushing the push plate 51 compresses the positioning spring 53, causing the positioning spring 53 to deform. When resetting, the rebound of the positioning spring 53 causes the push plate 51 to slide and reset.

[0038] Furthermore, a disassembly block 52 is fixedly connected to the side wall of the push plate 51. The disassembly block 52 passes through and is slidably connected to the side wall of the fixed frame 7. By pushing the push plate 51, the disassembly block 52 is driven to slide inside the fixed frame 7. The side wall of the connector 3 is provided with a disassembly hole, and the disassembly block 52 is inserted into the disassembly hole. The disassembly hole is provided to ensure a stable connection between the disassembly block 52 and the connector 3, thereby improving the stability of the connection between the connecting rod 4 and the connector 3.

[0039] Referring to Figures 2-4, the buffer assembly 6 includes a limiting rod 64, which is fixedly connected inside the first link 1. A buffer groove is provided inside the first link 1, and the limiting rod 64 is fixedly connected inside the buffer groove. The buffer groove ensures that the limiting rod 64 is stably connected inside the first link 1. A buffer block 63 is slidably connected to the outer surface of the limiting rod 64, and a buffer rod 62 is hinged to the side wall of the buffer block 63. Both the buffer rod 62 and the buffer block 63 are slidably connected inside the buffer groove. During the sliding of the buffer block 63 on the outer surface of the limiting rod 64, the buffer rod 62 is driven to slide stably inside the buffer groove.

[0040] Furthermore, a protective plate 61 is hinged to the end of the buffer rod 62. The protective plate 61 is arc-shaped, and its inner sidewall is in contact with the outer surface of the connecting rod 4. The arc-shaped protective plate 61 contacts the outer surface of the connecting rod 4, thus providing a protective and buffering effect for the connecting rod 4. The sidewall of the buffer block 63 is elastically connected to the inner sidewall of the first link 1 through a buffer spring 65. During the sliding process of the buffer block 63 on the outer surface of the limiting rod 64, it compresses the buffer spring 65, causing the buffer spring 65 to deform. When resetting, the rebound of the buffer spring 65 drives the buffer block 63 to slide and reset.

[0041] Working principle: In use, when the first link 1 and the second link 2 become worn and loose, requiring the removal of excess first link 1 and second link 2 to tighten the chain, the push plate 51 is pushed to compress the positioning spring 53, which in turn drives the disassembly block 52 into the fixed frame 7. Then, the connecting rod 4 is rotated to make the fixed frame 7 rotate to the position of the limit groove, and the connecting piece 3 is pulled out from the inside of the connecting rod 4. Then, the second link 2 is slid out from the outer surface of the connecting rod 4, which satisfies the disassembly between the second link 2 and the connecting piece 3, improving the efficiency of chain disassembly and maintenance.

[0042] When the first link 1 and the second link 2 vibrate during use, the vibration of the first link 1 and the second link 2 pulls the connecting rod 4. When the connecting rod 4 is pulled, it squeezes the protective plate 61. After the protective plate 61 is pushed, it drives the buffer rod 62 to move. The moving buffer rod 62 drives the buffer block 63 to slide on the outer surface of the limiting rod 64. During the sliding process, the buffer block 63 squeezes the buffer spring 65. After being squeezed, the buffer spring 65 deforms and plays a buffering role on the moving buffer block 63, thereby improving the safety of the connecting rod 4 during use and improving the stability of the connection between the first link 1 and the second link 2.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable pedal transmission mechanism for an electric bicycle, comprising a first chain link (1), characterized in that: The first link (1) is rotatably connected to a connecting rod (4), and a buffer assembly (6) is provided inside the first link (1). The outer surface of the connecting rod (4) is sleeved with a second link (2). The outer surface of the connecting rod (4) is sleeved with a connecting piece (3) on the side wall of the second link (2). The outer surface of the connecting rod (4) is fixedly connected to a fixing frame (7). The fixing frame (7) is provided with a disassembly mechanism (5). The disassembly mechanism (5) includes a push plate (51). The push plate (51) is slidably connected inside the fixing frame (7). The side wall of the push plate (51) is elastically connected to the inner side wall of the fixing frame (7) through a positioning spring (53). The side wall of the push plate (51) is fixedly connected to a disassembly block (52).

2. The adjustable pedal transmission mechanism for an electric bicycle according to claim 1, characterized in that: The buffer assembly (6) includes a limiting rod (64), which is fixedly connected inside the first link (1). A buffer block (63) is slidably connected to the outer surface of the limiting rod (64). A buffer rod (62) is hinged to the side wall of the buffer block (63). A protective plate (61) is hinged to the end of the buffer rod (62). The side wall of the buffer block (63) is elastically connected to the inner side wall of the first link (1) through a buffer spring (65).

3. The adjustable pedal transmission mechanism for an electric bicycle according to claim 1, characterized in that: The disassembly block (52) is slidably connected through and to the side wall of the fixed frame (7).

4. The adjustable pedal transmission mechanism for an electric bicycle according to claim 1, characterized in that: The side wall of the connector (3) is provided with a disassembly hole, and the disassembly block (52) is inserted into the disassembly hole.

5. The adjustable pedal transmission mechanism for an electric bicycle according to claim 1, characterized in that: The second link (2) and the connector (3) both have connecting holes that are compatible with the size of the connecting rod (4).

6. The adjustable pedal transmission mechanism for an electric bicycle according to claim 5, characterized in that: The top of the connecting hole is provided with a connecting groove that matches the size of the fixing frame (7).

7. The adjustable pedal transmission mechanism for an electric bicycle according to claim 1, characterized in that: The push plate (51) has a movable block on its side wall, which is slidably connected to the side wall of the fixed frame (7).

8. The adjustable pedal transmission mechanism for an electric bicycle according to claim 2, characterized in that: The protective plate (61) is arc-shaped, and the inner wall of the protective plate (61) is in contact with the outer surface of the connecting rod (4).

9. The adjustable pedal transmission mechanism for an electric bicycle according to claim 2, characterized in that: The first link (1) has a buffer groove inside, and the limiting rod (64) is fixedly connected inside the buffer groove.

10. An adjustable pedal transmission mechanism for an electric bicycle according to claim 2, characterized in that: The buffer rod (62) and the buffer block (63) are both slidably connected inside the buffer groove.

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