Noise reduction mechanism of bicycle transmission assistance system

Abstract

The utility model discloses a noise reduction mechanism of a bicycle transmission power assisting system, which comprises a bicycle body, the bicycle body comprises a main frame and a transmission suite, an auxiliary frame is arranged on the main frame, and a power assisting mechanism is arranged in the auxiliary frame; the power assisting mechanism comprises a sound insulation cover connected to the auxiliary frame in a penetrating mode, mute bearings are arranged on the two sides of the sound insulation cover in a penetrating mode, the same transmission shaft is arranged on the two mute bearings, the two ends of the transmission shaft are connected with transmission suites, and the transmission shaft is fixedly sleeved with a driven bevel gear. The utility model relates to the technical field of bicycle power assisting. According to the noise reduction mechanism of the bicycle transmission power assisting system, the power assisting mechanism is integrally arranged in the auxiliary frame, so that the noise problem caused in the working process of the power assisting mechanism can be effectively reduced, the noise reduction effect is achieved, meanwhile, the resistance borne in the riding process is smaller, and riding is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle power assist, in particular to a noise reduction mechanism of a bicycle transmission power assist system. Background Art

[0002] Power-assisted bicycle is a new type of two-wheeled vehicle, a type of bicycle. It uses batteries as an auxiliary power source, is equipped with a motor, and has a power assist system. It is a new type of transportation tool that can integrate human riding and motor assistance.

[0003] Publication number CN 207697936 U discloses a power-assist system and a bicycle having the same, wherein the power-assist system includes: a fixed seat for fixed connection with a bicycle frame; a driving unit, which is arranged on the fixed seat; a transmission assembly, one end of which is connected to the driving unit, and the other end of which is connected to the wheel axle of the bicycle. Through the technical solution provided by its practical new type, the power-assist system can be installed on an ordinary frame through a simple structure, thereby reducing the manufacturing cost of the bicycle; and can provide good power to the wheels during power-assist drive, thereby bringing about a better riding effect. Therefore, its practical new type of technical solution can solve the problem in the prior art that the riding effect and cost of a bicycle equipped with a power-assist system cannot be taken into account at the same time.

[0004] However, the bicycle power-assist system has the following shortcomings: the bicycle power-assist system is installed under the seat, and is large in size and directly exposed to the outside world, which causes the user to experience large wind noise during riding and also increases resistance, resulting in low user comfort and poor experience.

[0005] Therefore, the utility model provides a noise reduction mechanism for a bicycle transmission power-assisting system to solve the above-mentioned problem. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a noise reduction mechanism for a bicycle transmission power-assisting system, which solves the above-mentioned problems.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a noise reduction mechanism of a bicycle transmission power-assisting system, comprising a bicycle body, the bicycle body comprising a main frame and a transmission kit, an auxiliary frame being arranged on the main frame, and a power-assisting mechanism being arranged in the auxiliary frame;

[0008] The power-assisting mechanism includes a soundproof cover connected through the auxiliary frame, and silent bearings are arranged through both sides of the soundproof cover. The same transmission shaft is arranged on the two silent bearings, and both ends of the transmission shaft are connected to the transmission kit. A driven bevel gear is fixedly sleeved on the transmission shaft, and a driving motor is fixedly connected in the auxiliary frame. A rotating shaft is fixedly connected to the output shaft of the driving motor, a coupling is arranged at one end of the rotating shaft, and a connecting shaft is arranged at one end of the coupling. One end of the connecting shaft rotates and extends into the soundproof cover, and one end of the connecting shaft is fixedly connected to an active bevel gear, and the active bevel gear meshes with the driven bevel gear.

[0009] Preferably, two support plates are fixedly connected inside the auxiliary frame, and the corresponding support plates are rotatably connected to the rotating shaft, and the corresponding support plates are rotatably connected to the connecting shaft. The rotating shaft and the connecting shaft can be supported by the provided support plates, making their rotation more stable.

[0010] Preferably, a battery is fixedly connected inside the auxiliary frame, and the battery is electrically connected to the drive motor. The drive motor can be powered by the arranged battery, facilitating its normal operation.

[0011] Preferably, a patch is fixedly connected inside the auxiliary frame, the patch is in contact with the battery, one end of the patch is fixedly connected to a heat-conducting rod, one end of the heat-conducting rod extends into the main frame, and the heat in the auxiliary frame can be transferred to the main frame through the arranged patch and heat-conducting rod, thereby preventing the internal temperature of the auxiliary frame from being too high and affecting the normal operation of the drive motor.

[0012] Preferably, one end of the heat conducting rod is fixedly connected to a heat dissipation column, and the outer wall fixed sleeve of the heat dissipation column is provided with a plurality of annular heat dissipation fins. The heat dissipation column and annular heat dissipation fins can increase the heat dissipation area of ​​the heat conducting rod, thereby improving the heat dissipation efficiency.

[0013] Preferably, an inspection plate is provided on the outer wall of the auxiliary frame, and the inspection plate is connected to the auxiliary frame by a plurality of screws. The inspection plate can facilitate the inspection and maintenance of internal components of the auxiliary frame, which is convenient for later use.

[0014] Preferably, an oil filling pipe is connected through the auxiliary frame, and the bottom end of the oil filling pipe extends into the sound insulation cover. The oil filling pipe can be used to inject lubricating oil into the driving bevel gear and the driven bevel gear to facilitate transmission.

[0015] Preferably, the main frame is made of aluminum alloy, and the auxiliary frame is made of aluminum alloy. By providing the main frame and auxiliary frame made of aluminum alloy, the overall weight of the bicycle body can be reduced and the heat dissipation effect can be improved.

[0016] Beneficial Effects

[0017] The utility model provides a noise reduction mechanism for a bicycle transmission power-assisting system. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The noise reduction mechanism of the bicycle transmission power-assisting system can effectively reduce the noise problem caused by its working process by integrating the power-assisting mechanism inside the auxiliary frame, thereby achieving a noise reduction effect. At the same time, the resistance encountered during riding is smaller, making riding more convenient.

[0019] (2) The noise reduction mechanism of the bicycle power transmission system can reduce the overall weight of the bicycle body by providing a main frame and an auxiliary frame made of aluminum alloy, while improving the heat dissipation effect. The heat in the auxiliary frame can be transferred to the main frame through the provided patches and heat conducting rods, thereby preventing the internal temperature of the auxiliary frame from being too high and affecting the normal operation of the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the auxiliary vehicle frame of the utility model;

[0022] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the sound insulation cover in the utility model;

[0023] Figure 4 It is a relevant assembly diagram of the patch and the heat conducting rod in the utility model.

[0024] In the figure: 1. Bicycle body; 2. Main frame; 3. Transmission kit; 4. Auxiliary frame; 5. Sound insulation cover; 6. Silent bearing; 7. Transmission shaft; 8. Driven bevel gear; 9. Driving motor; 10. Rotating shaft; 11. Coupling; 12. Connecting shaft; 13. Active bevel gear; 14. Support plate; 15. Battery; 16. SMD; 17. Heat conducting rod; 18. Heat dissipation column; 19. Annular heat dissipation fin; 20. Inspection panel; 21. Oil filling pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] See also Figure 1 , Figure 2 and Figure 3 A noise reduction mechanism of a bicycle transmission power-assisting system comprises a bicycle body 1, the bicycle body 1 comprises a main frame 2 and a transmission kit 3, the transmission kit 3 adopts a chain transmission mode, which is an existing mature technology and is not described in detail, the main frame 2 is provided with an auxiliary frame 4, and the auxiliary frame 4 is provided with a power-assisting mechanism;

[0028] The power-assisting mechanism includes a soundproof cover 5 connected through the auxiliary frame 4, and silent bearings 6 are arranged on both sides of the soundproof cover 5. The same transmission shaft 7 is arranged on the two silent bearings 6. Both ends of the transmission shaft 7 are connected to the transmission kit 3. A driven bevel gear 8 is fixedly sleeved on the transmission shaft 7. A driving motor 9 is fixedly connected to the auxiliary frame 4, and a rotating shaft 10 is fixedly connected to the output shaft of the driving motor 9. A coupling 11 is arranged at one end of the rotating shaft 10, and a connecting shaft 12 is arranged at one end of the coupling 11. One end of the connecting shaft 12 rotates and extends into the soundproof cover 5, and one end of the connecting shaft 12 is fixedly connected to an active bevel gear 13, and the active bevel gear 13 is meshed with the driven bevel gear 8.

[0029] Embodiment 2:

[0030] See also Figures 1 to 4 This embodiment provides a technical solution based on the first embodiment: two support plates 14 are fixedly connected in the auxiliary frame 4, and the corresponding support plates 14 are rotatably connected to the rotating shaft 10, and the corresponding support plates 14 are rotatably connected to the connecting shaft 12; a battery 15 is fixedly connected in the auxiliary frame 4, and the battery 15 is electrically connected to the driving motor 9; a patch 16 is fixedly connected in the auxiliary frame 4, and the patch 16 is in contact with the battery 15. The patch 16 is made of aluminum alloy, and one end of the patch 16 is fixedly connected to a heat-conducting rod 17, which is made of aluminum alloy, and one end of the heat-conducting rod 17 extends to the main frame 2 Inside; one end of the heat-conducting rod 17 is fixedly connected to a heat dissipation column 18, the heat dissipation column 18 is made of aluminum alloy, and the outer wall of the heat dissipation column 18 is fixedly sleeved with a plurality of annular heat dissipation fins 19; the annular heat dissipation fins 19 are made of aluminum alloy, and the outer wall of the annular heat dissipation fins 19 is in contact with the inner wall of the main frame 2, and the outer wall of the auxiliary frame 4 is provided with an inspection plate 20, and the inspection plate 20 is connected to the auxiliary frame 4 by a plurality of screws; an oil filling pipe 21 is connected through the auxiliary frame 4, and the bottom end of the oil filling pipe 21 extends into the sound insulation cover 5; the main frame 2 is made of aluminum alloy, and the auxiliary frame 4 is made of aluminum alloy.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction mechanism for a bicycle power transmission system, comprising a bicycle body (1), characterized in that: The bicycle body (1) comprises a main frame (2) and a transmission kit (3); an auxiliary frame (4) is arranged on the main frame (2); and a power-assisting mechanism is arranged in the auxiliary frame (4); The power-assisting mechanism comprises a soundproof cover (5) connected to the auxiliary vehicle frame (4), both sides of the soundproof cover (5) are provided with silent bearings (6), the two silent bearings (6) are provided with a same transmission shaft (7), both ends of the transmission shaft (7) are connected to the transmission kit (3), a driven bevel gear (8) is fixedly sleeved on the transmission shaft (7), a driving motor (9) is fixedly connected inside the auxiliary vehicle frame (4), a rotating shaft (10) is fixedly connected to the output shaft of the driving motor (9), a coupling (11) is provided at one end of the rotating shaft (10), a connecting shaft (12) is provided at one end of the coupling (11), one end of the connecting shaft (12) is rotatably extended into the soundproof cover (5), one end of the connecting shaft (12) is fixedly connected to an active bevel gear (13), and the active bevel gear (13) is meshed with the driven bevel gear (8).

2. The noise reduction mechanism of a bicycle power transmission system according to claim 1, characterized in that: Two support plates (14) are fixedly connected inside the auxiliary vehicle frame (4), and the corresponding support plates (14) are rotatably connected to the rotating shaft (10), and the corresponding support plates (14) are rotatably connected to the connecting shaft (12).

3. The noise reduction mechanism of a bicycle power transmission system according to claim 1, characterized in that: A storage battery (15) is fixedly connected inside the auxiliary vehicle frame (4), and the storage battery (15) is electrically connected to the drive motor (9).

4. The noise reduction mechanism of a bicycle power transmission system according to claim 1, characterized in that: A patch (16) is fixedly connected inside the auxiliary vehicle frame (4), the patch (16) is in contact with the storage battery (15), one end of the patch (16) is fixedly connected to a heat conducting rod (17), and one end of the heat conducting rod (17) extends into the main vehicle frame (2).

5. The noise reduction mechanism of a bicycle power transmission system according to claim 4, characterized in that: One end of the heat-conducting rod (17) is fixedly connected to a heat-dissipating column (18), and the outer wall of the heat-dissipating column (18) is fixedly sleeved with a plurality of annular heat-dissipating fins (19).

6. The noise reduction mechanism of a bicycle power transmission system according to claim 1, characterized in that: An inspection plate (20) is provided on the outer wall of the auxiliary vehicle frame (4), and the inspection plate (20) is connected to the auxiliary vehicle frame (4) via a plurality of screws.

7. The noise reduction mechanism of a bicycle power transmission system according to claim 1, characterized in that: An oil filling pipe (21) is connected through the auxiliary vehicle frame (4), and the bottom end of the oil filling pipe (21) extends into the sound insulation cover (5).

8. The noise reduction mechanism of a bicycle power transmission system according to claim 1, characterized in that: The main vehicle frame (2) is made of aluminum alloy, and the auxiliary vehicle frame (4) is made of aluminum alloy.

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