A lightweight and fast electric-assisted bicycle

Abstract

This utility model relates to the field of electric-assist bicycle technology and discloses a lightweight and fast electric-assist bicycle, including a frame. The frame has a battery box inside for accommodating and installing batteries. The surface of the battery box is provided with a removable sealing cover. A sealing groove is formed on the inner wall edge of the battery box. A first sealing element is glued to the bottom side of the sealing cover. A second sealing element is glued to the bottom side of the sealing cover and inside the first sealing element. The battery box is provided with a fastening assembly for securing the battery. By fastening the sealing cover to the surface of the battery box, the first and second sealing elements are respectively embedded in the sealing groove and the battery compartment inside the battery box, thereby achieving double sealing, improving the sealing effect, preventing rainwater from seeping into the battery compartment and damaging the battery, and also playing a dustproof role, preventing dust from affecting the battery contact connection and causing poor contact.

Description

Technical Field

[0001] This utility model relates to the field of electric-assisted bicycle technology, specifically to a lightweight and fast electric-assisted bicycle. Background Technology

[0002] Electric-assisted bicycles are a new type of transportation that combines human pedaling with electric assistance. Their core feature is that the motor provides assistance only when the rider actively pedals, combining the flexibility of traditional bicycles with the labor-saving advantages of electric bicycles.

[0003] Existing electric-assist bicycles require batteries to drive the motor. To extend the bicycle's range, two batteries are typically used alternately. However, during long-term outdoor riding, the battery compartment is exposed to the elements and is easily affected by rainwater, which can lead to poor contact at the battery connection points and affect the electric assist effect. Therefore, further improvements are needed. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides the following technical solution: a lightweight and fast electric-assisted bicycle, comprising a frame, a seat fixedly mounted in the middle of the frame, a handlebar frame fixedly mounted at the front end of the frame, handlebars fixedly mounted at both ends of the handlebar frame, a front fork fixedly mounted at the bottom front end of the frame, a battery box for accommodating and installing batteries inside the frame, and a battery compartment inside the battery box, a removable sealing cover on the surface of the battery box, a sealing groove on the inner edge of the battery box located outside the battery compartment, a first sealing element glued to the bottom side of the sealing cover and tightly embedded in the sealing groove, a second sealing element glued to the bottom side of the sealing cover located inside the first sealing element and tightly embedded in the battery compartment, a slot on the top inner wall of the battery box, and a fastening assembly for securely installing the battery inside the battery box.

[0005] As an optimization, the sealing cover has sliding grooves at both ends corresponding to the slots, and the sliding grooves are provided with locking pins for positioning and installing the sealing cover.

[0006] As an optimization, the locking pin includes a locking block that is slidably inserted into the slide groove. A compression spring is fixedly installed between the locking block and the bottom wall of the slide groove. A through groove is opened on the top side of the sealing cover corresponding to the slide groove. A pull plate is fixedly installed on the top side of the locking block, and the pull plate is slidably connected in the through groove.

[0007] As an optimization, the fastening mounting assembly includes a rotating shaft rotatably connected to the bottom of the battery box, a threaded sleeve fixedly installed inside the battery box and corresponding to the battery box location, the bottom of the rotating shaft having a threaded portion, and the threaded portion being screwed into the threaded sleeve, the bottom of the rotating shaft being rotatably connected to a support, a connecting rod being hinged inside the support, and a pusher being hinged at the other end of the connecting rod to push the battery to a fastened and fixed position.

[0008] As an optimization, the pusher includes a push-pull rod that is inserted through the battery compartment, and one end of the push-pull rod is hinged to one end of the connecting rod. A pressing plate is fixedly installed at the end of the push-pull rod that is inserted into the battery compartment, and the pressing plate is slidably connected inside the battery compartment.

[0009] As an optimization, a shaft is fixedly installed at the bottom of the battery box corresponding to the connecting rod, and a limiting groove is opened through the middle of the connecting rod, and the shaft is slidably connected inside the limiting groove.

[0010] As an optimization, a knob is fixedly mounted on the top of the rotating shaft, and the knob is located on the outer surface of the battery box.

[0011] The beneficial effects of this utility model are:

[0012] This lightweight and fast electric-assist bicycle uses a sealing cover to attach to the surface of the battery box. This allows the first and second seals to be embedded in the sealing groove and battery compartment of the battery box, respectively, thus achieving a double seal. This improves the sealing effect, prevents rainwater from seeping into the battery compartment and damaging the battery, and also serves as a dustproof measure to prevent dust from affecting the battery contact connection and causing poor contact.

[0013] This lightweight and fast electric-assist bicycle allows the threaded part to rotate inside the threaded sleeve by turning the knob counterclockwise. This rotation, via the support, causes the connecting rod to shift to the right, pushing the compression plate closer to the battery through the push-pull rod. This compression then secures the battery in the battery compartment. Similarly, turning the knob clockwise removes the battery from its tight position, making it easy and quick to remove. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the battery box structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the sealing cap structure of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the battery box structure of this utility model;

[0018] Figure 5 This utility model Figure 4 Enlarged schematic diagram of a local structure at point A;

[0019] Figure 6 This is a schematic diagram of the fastening and installation structure of this utility model.

[0020] In the diagram: 1. Frame; 2. Seat; 3. Handlebar frame; 4. Handlebar; 5. Fork; 6. Battery box; 7. Sealing cover; 8. First seal; 9. Second seal; 10. Slot; 11. Fastening assembly; 12. Block; 13. Compression spring; 14. Through slot; 15. Pull plate; 16. Shaft; 17. Threaded sleeve; 18. Threaded part; 19. Support; 20. Connecting rod; 21. Push-pull rod; 22. Extrusion plate; 23. Shaft; 24. Limiting groove. Detailed Implementation

[0021] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] 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.

[0023] Please see Figure 1-3A lightweight and fast electric-assist bicycle includes a frame 1, a seat 2 fixedly mounted in the middle of the frame 1, a handlebar frame 3 fixedly mounted at the front end of the frame 1, handlebars 4 fixedly mounted at both ends of the handlebar frame 3, a front fork 5 fixedly mounted at the bottom front end of the frame 1, a battery box 6 for accommodating and installing batteries inside the frame 1, and a battery compartment inside the battery box 6, with a removable sealing cover 7 on the surface of the battery box 6, a sealing groove formed on the inner edge of the battery box 6 and outside the battery compartment, and a double sealing element 8 glued to the bottom side of the sealing cover 7, the double sealing element 8 being tightly embedded in the sealing groove, and the bottom side of the sealing cover 7 and A second sealing element 9 is glued and bonded inside the first sealing element 8, and the second sealing element 9 is tightly embedded in the battery compartment. A slot 10 is provided on the top inner wall of the battery box 6. A fastening assembly 11 for fastening the battery is provided inside the battery box 6. By fastening the sealing cover 7 to the surface of the battery box 6, the first sealing element 8 and the second sealing element 9 are respectively embedded in the sealing groove and the battery compartment of the battery box 6, thereby achieving double sealing, improving the sealing effect, preventing rainwater from seeping into the battery compartment and damaging the battery, and also playing a dustproof role, preventing dust from affecting the battery contact connection and causing poor contact.

[0024] Please see Figure 4-5 The sealing cover 7 has sliding grooves at both ends corresponding to the slots 10, and the sliding grooves are equipped with locking pins for positioning and installing the sealing cover 7. The locking pins include a locking block 12 that slides into the sliding groove. A compression spring 13 is fixedly installed between the locking block 12 and the bottom wall of the sliding groove. A through groove 14 is opened on the top side of the sealing cover 7 corresponding to the sliding groove. A pull plate 15 is fixedly installed on the top side of the locking block 12 and is slidably connected in the through groove 14. The compression spring 13 will drive the locking block 12 into the slot 10, thereby limiting the installation of the double seal 9. By moving the pull plate 15, the locking block 12 can be moved out of the slot 10, and the sealing cover 7 can be removed. The disassembly and installation are convenient and quick.

[0025] Please see Figure 6 The fastening and mounting assembly 11 includes a rotating shaft 16 rotatably connected to the bottom of the battery box 6. A knob is fixedly mounted on the top of the rotating shaft 16 and is located on the outer surface of the battery box 6. A threaded sleeve 17 is fixedly mounted inside the battery box 6 and corresponding to the location of the battery box 6. The bottom of the rotating shaft 16 has a threaded portion 18, which is screwed into the threaded sleeve 17. A support 19 is rotatably connected to the bottom of the rotating shaft 16. A connecting rod 20 is hinged inside the support 19. The other end of the connecting rod 20 is hinged to a fastening pusher for fastening the battery. By rotating the rotating shaft 16, the threaded portion 18 rotates inside the threaded sleeve 17, which drives the support 19 to move downward. This, in turn, drives the fastening pusher through the connecting rod 20 to push the battery upward until the battery is fastened in the battery compartment of the battery box 6.

[0026] Please see Figure 6 The pusher includes a push-pull rod 21 that is inserted through the battery compartment, and one end of the push-pull rod 21 is hinged to one end of the connecting rod 20. The end of the push-pull rod 21 inserted into the battery compartment is fixedly installed with a pressing plate 22, and the pressing plate 22 is slidably connected in the battery compartment. By transmitting the push-pull rod 21 through the connecting rod 20, the pressing plate 22 can be pushed to slide along the inner wall of the battery compartment, thereby pressing against the battery to fasten it.

[0027] Please see Figure 6 A shaft 23 is fixedly installed at the bottom of the battery box 6 corresponding to the connecting rod 20. A limiting groove 24 is opened through the middle of the connecting rod 20, and the shaft 23 is slidably connected inside the limiting groove 24. The shaft 23 is used as a fulcrum to support the connecting rod 20, so that when the connecting rod 20 is deflected by force, it moves and deflects around the shaft 23 as the axis, thus stably pushing and pulling the push-pull rod 21.

[0028] When in use, first put the battery into the battery compartment of the battery box 6, and then turn the knob counterclockwise to drive the threaded part 18 to rotate inside the threaded sleeve 17. This will cause the connecting rod 20 to shift to the right through the support 19, so that the push-pull rod 21 will push the extrusion plate 22 closer to the battery, thereby extruding the battery and making the battery stably installed in the battery compartment.

[0029] Next, the sealing cover 7 is placed inside the battery box 6. At this time, the locking block 12 will be pressed and move into the sliding groove, while compressing the compression spring 13. So after the sealing cover 7 is fully embedded in the top of the battery box 6, the compression spring 13 will drive the locking block 12 to reset and insert into the slot 10, thus achieving the installation and positioning function. When it is necessary to replace the battery, simply move the pull plate 15 to remove the locking block 12 from the slot 10, and the sealing cover 7 can be removed. Then, turn the knob clockwise to remove the battery.

[0030] In summary, this lightweight and fast electric-assist bicycle, by attaching the sealing cover 7 to the surface of the battery box 6, allows the first sealing element 8 and the second sealing element 9 to be respectively embedded in the sealing groove and battery compartment of the battery box 6, thereby achieving double sealing, improving the sealing effect, preventing rainwater from seeping into the battery compartment and damaging the battery, and also playing a dustproof role, preventing dust from affecting the battery contact connection and causing poor contact.

[0031] By turning the knob counterclockwise, the threaded part 18 will rotate inside the threaded sleeve 17, which will then cause the connecting rod 20 to shift to the right through the support 19. This will push the compression plate 22 closer to the battery through the push-pull rod 21, thereby squeezing the battery and making it stably installed in the battery compartment. Similarly, turning the knob clockwise will loosen the battery's tightness and allow it to be removed quickly and easily.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0034] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A lightweight and fast electric-assisted bicycle, comprising a frame (1), a seat (2) fixedly mounted in the middle of the frame (1), a handlebar frame (3) fixedly mounted at the front end of the frame (1), handlebars (4) fixedly mounted at both ends of the handlebar frame (3), a front fork (5) fixedly mounted at the bottom of the front end of the frame (1), a battery box (6) for accommodating and installing batteries inside the frame (1), and a battery compartment inside the battery box (6), and a removable sealing cover (7) provided on the surface of the battery box (6), characterized in that: A sealing groove is provided on the inner wall edge of the battery box (6) and on the outside of the battery compartment. A first sealing element (8) is glued to the bottom side of the sealing cover (7) and the first sealing element (8) is tightly embedded in the sealing groove. A second sealing element (9) is glued to the bottom side of the sealing cover (7) and inside the first sealing element (8) and the second sealing element (9) is tightly embedded in the battery compartment. A slot (10) is provided on the top inner wall of the battery box (6). A fastening assembly (11) for fastening the battery is provided inside the battery box (6).

2. A portable and fast electric assist bicycle according to claim 1, characterized in that: The sealing cover (7) has sliding grooves at both ends corresponding to the slots (10), and the sliding grooves are provided with locking pins for positioning and installing the sealing cover (7).

3. A portable and fast electric assist bicycle according to claim 2, characterized in that: The locking pin includes a locking block (12) that is slidably inserted into the slide groove. A compression spring (13) is fixedly installed between the locking block (12) and the bottom wall of the slide groove. A through groove (14) is provided on the top side of the sealing cover (7) corresponding to the slide groove. A pull plate (15) is fixedly installed on the top side of the locking block (12), and the pull plate (15) is slidably connected in the through groove (14).

4. The portable and fast electric assist bicycle according to claim 1, characterized in that: The fastening assembly (11) includes a rotating shaft (16) rotatably connected to the bottom of the battery box (6). A threaded sleeve (17) is fixedly installed inside the battery box (6) and corresponding to the battery box (6). The bottom of the rotating shaft (16) has a threaded portion (18), and the threaded portion (18) is screwed into the threaded sleeve (17). The bottom of the rotating shaft (16) is rotatably connected to a support (19). A connecting rod (20) is hinged inside the support (19). The other end of the connecting rod (20) is hinged to a pusher for fastening and positioning the battery.

5. A portable and fast electric assist bicycle according to claim 4, characterized in that: The pusher includes a push-pull rod (21) that is inserted through the battery compartment, and one end of the push-pull rod (21) is hinged to one end of the connecting rod (20). A pressing plate (22) is fixedly installed on one end of the push-pull rod (21) inserted into the battery compartment, and the pressing plate (22) is slidably connected in the battery compartment.

6. The portable and fast electric assist bicycle according to claim 4, characterized in that: A shaft (23) is fixedly installed at the bottom of the battery box (6) at the corresponding position of the connecting rod (20). A limiting groove (24) is opened through the middle of the connecting rod (20), and the shaft (23) is slidably connected inside the limiting groove (24).

7. The portable and fast electric assist bicycle according to claim 4, characterized in that: A knob is fixedly mounted on the top of the rotating shaft (16), and the knob is located on the outer surface of the battery box (6).

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