A durable frame for electric bicycles

Abstract

This utility model belongs to the field of vehicle frame technology, specifically relating to a durable electric bicycle frame, including a frame body, a power protection mechanism, a quick-connect mechanism, and a connection auxiliary mechanism. The power protection mechanism includes a protective plate and a reinforcing rod. The quick-connect mechanism includes a support tube and a snap-fit ​​rod. The connection auxiliary mechanism includes a drive ring and a damping gear ring. The power protection mechanism, through the combined design of the protective plate and the reinforcing rod, forms all-round protection for the power box. The protective plate covers the top of the power box, and the bottom protective plate enhances the bottom protection, together forming a complete protective cover structure. The snap-fit ​​rod and snap-fit ​​tube are used to achieve quick connection and disassembly between the protective plate and the mounting frame. By rotating the snap-fit ​​tube, the sealing frame pushes the locking spring block into the slot and locks it, forming a firm connection. When rotated in the opposite direction, the locking spring block retracts and disengages from the slot, achieving quick disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle frame technology, specifically relating to a durable frame for electric bicycles. Background Technology

[0002] In the design and manufacture of electric bicycles, the frame is a crucial component supporting the entire electric system. The effectiveness of battery protection directly impacts the overall safety, durability, and battery life of the vehicle. However, current technology still presents challenges in battery protection for many electric bicycles. Furthermore, well-designed protection systems often make battery replacement and maintenance cumbersome, negatively affecting the user experience and long-term convenience of electric bicycle use.

[0003] The battery of an electric bicycle is usually installed inside or under the frame. Due to the strong movement of electric bicycles and the vibrations on the road, the battery may be subjected to external impacts or vibrations. This is especially evident in some rudimentary frame designs that lack sufficient protection. During long-term riding, the battery may experience malfunctions such as damage to the battery casing, damage to the internal wiring, or short circuits, thus affecting the battery's lifespan and safety.

[0004] While many electric bicycle batteries on the market have some protective features, their installation and replacement processes are quite cumbersome. Many owners need to remove the battery mounting hardware, disconnect electrical connections, and disassemble the frame to successfully replace the battery. This process requires not only certain professional skills but may also necessitate specialized tools, making battery replacement extremely difficult in non-professional settings.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a durable frame for electric bicycles to solve the technical problems mentioned in the background art, such as poor battery protection and cumbersome battery replacement and maintenance in well-protected devices.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A durable electric bicycle frame includes a frame body, a power protection mechanism, a quick-connect mechanism, and a connection auxiliary mechanism. The power protection mechanism includes a protective plate and a reinforcing rod. A mounting frame is installed at the top of the frame body, and the reinforcing rod is installed between the mounting frame and the frame body. The protective plate is connected to the mounting frame via the quick-connect mechanism. A bottom protective plate is installed at the bottom of one end of the protective plate. The quick-connect mechanism includes a support tube and a locking rod. The support tube is fixedly installed at the bottom of the mounting frame, and a locking tube is rotatably mounted at one end of the support tube. A locking groove is formed on the inner wall of the locking tube. A locking spring block is installed on the outer wall of the locking rod. Initially, the locking spring block is away from the locking groove. A sealing frame is installed on the inner wall of the locking tube, and rotation of the sealing frame can push the locking spring block into the locking groove, sealing one end of the locking spring block within the groove.

[0008] Furthermore, the connecting auxiliary mechanism includes a driving ring and a damping toothed ring. The driving ring is installed at the bottom end of the side wall of the clamping tube, and an external toothed ring is installed at the bottom end of the driving ring. The damping toothed ring is rotatably mounted on the outer wall of the support tube. A double-headed toothed rod is meshed between the damping toothed ring and the external toothed ring. A damping spring is installed on the inner wall of the damping toothed ring. When the driving ring rotates, it causes the damping toothed ring to rotate stably, thereby causing the clamping tube to rotate stably on the support tube.

[0009] Furthermore, a power supply box is installed on the frame body, and a protection plate mounting plate is located at the top of the power supply box. The power supply box is used to store the electric bicycle's battery and related electrical components, and is a key component that needs to be protected.

[0010] Furthermore, a connecting plate is installed at the bottom of the outer wall of the support tube, and the connecting plate is fixedly installed at the bottom of the mounting frame, thereby enhancing the connection strength between the support tube and the mounting frame.

[0011] Furthermore, a limiting block is installed at one end of the snap-fit ​​rod, and one end of the limiting block is in contact with the top end of the protective plate. One end of the snap-fit ​​rod extends through the protective plate and engages with the support tube. One end of the snap-fit ​​rod is connected to the protective plate, and the other end extends into the support tube and engages with the snap-fit ​​tube, thereby realizing the quick connection between the protective plate and the mounting frame.

[0012] Furthermore, an installation box is installed on the protective plate, and a limiting block is installed inside the installation box. A mating box is installed on the protective plate, and the mating box is set parallel to and at the same height as the installation box, which facilitates the installation of the external seat cushion and foot pad.

[0013] Furthermore, a support plate is fixedly installed on the outer wall of the support tube, and the double-headed rack is rotatably set at the upper limit of the support plate. The support plate provides a fulcrum for the rotation of the double-headed rack, ensuring the stability of the gear transmission system.

[0014] Furthermore, an inner retaining ring is installed on the inner wall of the support tube, and a push-out spring is installed on the side wall of the snap-fit ​​rod. One end of the push-out spring is in contact with one end face of the inner retaining ring, providing appropriate elastic support to facilitate the pull-out of the snap-fit ​​rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) This utility model is equipped with a power protection mechanism. The power protection mechanism forms an all-round protection for the power box through the combination design of the protection plate and the reinforcing rod. The protection plate covers the top of the power box, and the bottom protection plate enhances the bottom protection, together forming a complete protective cover structure. The reinforcing rod connects the mounting frame and the frame body, providing additional structural support, preventing deformation caused by vibration, effectively preventing damage to the battery and electrical components from external impact, and greatly improving the safety of electric bicycle use and the reliability of the power system.

[0016] (2) This utility model is equipped with a quick connection mechanism, which adopts the method of locking rod and locking tube to realize quick connection and disassembly of the protection plate and the mounting frame. By rotating the locking tube, the sealing frame pushes the locking spring block into the slot and locks it to form a firm connection. When rotating in the opposite direction, the locking spring block retracts and disengages from the slot to realize quick disassembly. The cooperation between the inner retaining ring and the push-out spring provides appropriate elastic support and facilitates operation. This design greatly simplifies the installation and disassembly process of the protection device and improves maintenance efficiency and ease of use.

[0017] (3) The present invention is provided with a connecting auxiliary mechanism. The connecting auxiliary mechanism provides a stable and controllable power transmission system for the rotation of the locking tube through the precise cooperation of the driving ring, the external gear ring, the double-headed gear rod and the damping gear ring. The damping spring on the inner wall of the damping gear ring provides appropriate resistance, which effectively prevents the locking tube from rotating too fast or unstable. The double-headed gear rod with the upper limit rotation of the support plate ensures the stability of the gear transmission. This design makes the locking and unlocking process more stable and reliable, reduces mechanical wear, and extends the service life of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention from a bottom view. Figure 3 This is a structural schematic diagram of the installation method of the protective plate of this utility model; Figure 4 This is a schematic diagram of the quick-connect mechanism and the connection auxiliary mechanism of this utility model; Figure 5 This is a schematic diagram of the internal structure of the quick connection mechanism and the connection auxiliary mechanism of this utility model.

[0019] Explanation of key figure labels: 1. Frame body; 2. Protective plate; 3. Reinforcing rod; 4. Mounting frame; 5. Bottom protection plate; 6. Support tube; 7. Clip rod; 8. Clip tube; 9. Clip groove; 10. Sealing frame; 11. Drive ring; 12. Damping gear ring; 13. External gear ring; 14. Double-ended gear; 15. Damping spring; 16. Power supply box; 17. Connecting plate; 18. Limiting block; 19. Mounting box; 20. Mating box; 21. Support plate; 22. Inner retaining ring; 23. Push-out spring; 101. Locking spring block. Detailed Implementation

[0020] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example See appendix Figure 1-5 A durable electric bicycle frame includes a frame body 1, a power protection mechanism, a quick-connect mechanism, and a connection auxiliary mechanism; wherein, The power protection mechanism includes a protection plate 2 and a reinforcing rod 3. A mounting frame 4 is installed at the top end of the frame body 1. The reinforcing rod is installed between the mounting frame 4 and the frame body 1. The protection plate 2 is connected to the mounting frame 4 through a quick-connect mechanism. A bottom protection plate 5 is installed at the bottom end of one end of the protection plate 2. The quick-connect mechanism includes a support tube 6 and a snap-fit ​​rod 7. The support tube 6 is fixedly installed at the bottom end of the mounting frame 4. A snap-fit ​​tube 8 is installed at one end of the support tube 6 for limited rotation. A snap-fit ​​groove 9 is opened on the inner wall of the snap-fit ​​tube 8. A locking spring block 101 is installed on the outer wall of the snap-fit ​​rod 7. In the initial state, the locking spring block 101 is away from the snap-fit ​​groove 9. A sealing frame 10 is installed on the inner wall of the snap-fit ​​tube 8. The rotation of the sealing frame 10 can push the locking spring block 101 into the snap-fit ​​groove 9 and seal one end of the locking spring block 101 in the snap-fit ​​groove 9.

[0022] In this embodiment, the power protection mechanism provides protection and support for the power box 16 through the protective plate 2 and the reinforcing rod 3. During operation, the protective plate 2 is installed on top of the power box 16 on the frame body 1 and connected to the mounting frame 4 through a quick-connect mechanism to form a protective cover. The bottom protective plate 5 installed at the bottom of the protective plate 2 further enhances the protection of the power box 16. At the same time, the reinforcing rod 3 is installed between the mounting frame 4 and the frame body 1 to provide additional structural support, prevent the mounting frame 4 from deforming during vibration, and ensure that the protective plate 2 stably protects the power box 16. The quick-connect mechanism enables quick connection and disassembly of the protective plate 2 and the mounting frame 4. During operation, the snap-fit ​​rod 7 extends from the protective plate 2 and connects with the mounting frame 4. The support tube 6, fixed to the bottom of the mounting frame 4, is snapped in place. In the initial state, the locking spring block 101 on the outer wall of the snap-fit ​​rod 7 is away from the slot 9. When the snap-fit ​​rod 7 is inserted into the snap-fit ​​tube 8, the snap-fit ​​tube 8 is rotated so that the sealing bracket 10 on the inner wall pushes the locking spring block 101 into the slot 9 and seals one end of the locking spring block 101 in the slot 9, forming a firm locking connection. The inner retaining ring 22 on the inner wall of the support tube 6 cooperates with the push-out spring 23 on the side wall of the snap-fit ​​rod 7 to provide appropriate elastic support and positioning function. When disassembling, the snap-fit ​​tube 8 is rotated in the opposite direction so that the sealing bracket 10 leaves the locking spring block 101. The locking spring block 101 retracts under the action of elasticity and disengages from the slot 9, so the snap-fit ​​rod 7 can be pulled out.

[0023] In this embodiment, the connecting auxiliary mechanism includes a drive ring 11 and a damping toothed ring 12. The drive ring 11 is installed at the bottom end of the side wall of the clamping tube 8, and an external toothed ring 13 is installed at the bottom end of the drive ring 11. The damping toothed ring 12 is rotatably mounted on the outer wall of the support tube 6. A double-headed toothed rod 14 is meshed between the damping toothed ring 12 and the external toothed ring 13. A damping spring 15 is installed on the inner wall of the damping toothed ring 12. When the drive ring 11 rotates, it causes the damping toothed ring 12 to rotate stably, thereby causing the clamping tube 8 to rotate stably on the support tube 6. The connecting auxiliary mechanism provides smooth rotation through the cooperation of the drive ring 11 and the damping toothed ring 12. When the retaining tube 8 needs to be rotated, the drive ring 11 rotates together with the retaining tube 8. The outer toothed ring 13 at the bottom of the drive ring 11 drives the damping toothed ring 12 to rotate through the double-headed toothed rod 14. The damping spring 15 on the inner wall of the damping toothed ring 12 provides appropriate resistance, making the entire rotation process more stable and controllable, preventing the retaining tube 8 from rotating too fast or unstable, and ensuring that the locking spring block 101 can smoothly enter or disengage from the retaining groove 9.

[0024] In this embodiment, a power supply box 16 is installed on the frame body 1, a protective plate 2 is mounted on the top of the power supply box 16, a connecting plate 17 is installed on the bottom of the outer wall of the support tube 6, and the connecting plate 17 is fixedly installed on the bottom of the mounting frame 4. A limiting block 18 is installed on one end of the snap-fit ​​rod 7, and one end of the limiting block 18 is in contact with the top of the protective plate 2. One end of the snap-fit ​​rod 7 extends through the protective plate 2 and engages with the support tube 6. A mounting box 19 is installed on the protective plate 2, and the limiting block 18 is installed inside the mounting box 19. A mating box 20 is installed on the protective plate 2, and the mating box 20 is parallel and at the same height as the mounting box 19. A support plate 21 is fixedly installed on the outer wall of the support tube 6, and a double-headed toothed rod 14 is rotated at the upper limit of the support plate 21. An inner retaining ring 22 is installed on the inner wall of the support tube 6. A push-out spring 23 is installed on the side wall of the snap-fit ​​rod 7, and one end of the push-out spring 23 is in contact with one end face of the inner retaining ring 22. Place the protection plate 2 on top of the power supply box 16. The snap-fit ​​rod 7 passes through the mounting box 19 and mating box 20 on the protection plate 2. The limiting block 18 remains in contact with the top of the protection plate 2. Insert the snap-fit ​​rod 7 into the snap-fit ​​tube 8 on the support tube 6. The snap-fit ​​rod 7 is held in the appropriate position by the action of the push-out spring 23. Rotate the snap-fit ​​tube 8. At this time, the drive ring 11 rotates accordingly. The damping gear ring 12 rotates smoothly through the double-headed toothed rod 14. The sealing frame 10 in the snap-fit ​​tube 8 pushes the locking spring block 101 into the slot 9 and seals and locks it. After the connection is completed, the protection plate 2 and the bottom protection plate 5 form a comprehensive protection for the power supply box 16. The reinforcing rod 3 provides structural support and together protects the power supply box 16 from external impact and environmental influence. When disassembly is required, rotate the snap-fit ​​tube 8 in the opposite direction. The damping gear ring 12 provides smooth resistance. The sealing frame 10 leaves the locking spring block 101. The locking spring block 101 retracts and disengages from the slot 9. Then pull out the snap-fit ​​rod 7 to achieve quick disassembly.

[0025] In summary, when the power protection mechanism is required to operate, it provides protection and support to the power box 16 through the protection plate 2 and the reinforcing rod 3. During operation, the protection plate 2 is installed on the top of the power box 16 on the frame body 1 and is connected to the mounting frame 4 through a quick-connect mechanism to form a protective cover. The bottom protection plate 5 installed at the bottom of the protection plate 2 further enhances the protection of the power box 16. At the same time, the reinforcing rod 3 is installed between the mounting frame 4 and the frame body 1 to provide additional structural support, prevent the mounting frame 4 from deforming under vibration, and ensure that the protection plate 2 stably protects the power box 16.

[0026] When the quick-connect mechanism is in operation, it enables the quick connection and disassembly of the protective plate 2 and the mounting frame 4. During operation, the snap-fit ​​rod 7 extends through the protective plate 2 and snaps into the support tube 6 fixed at the bottom of the mounting frame 4. In the initial state, the locking spring block 101 on the outer wall of the snap-fit ​​rod 7 is away from the slot 9. When the snap-fit ​​rod 7 is inserted into the snap-fit ​​tube 8, rotating the snap-fit ​​tube 8 causes the sealing bracket 10 on the inner wall to push the locking spring block 101 into the slot 9 and seal one end of the locking spring block 101 in the slot 9, forming a firm locking connection. The inner retaining ring 22 on the inner wall of the support tube 6 cooperates with the push-out spring 23 on the side wall of the snap-fit ​​rod 7 to provide appropriate elastic support and positioning function. When disassembling, rotating the snap-fit ​​tube 8 in the opposite direction causes the sealing bracket 10 to leave the locking spring block 101. The locking spring block 101 retracts under the action of elasticity and disengages from the slot 9, allowing the snap-fit ​​rod 7 to be pulled out.

[0027] When the auxiliary mechanism is connected, it provides a smooth rotational motion through the cooperation of the drive ring 11 and the damping gear ring 12. When the retaining tube 8 needs to be rotated, the drive ring 11 rotates together with the retaining tube 8. The outer gear ring 13 at the bottom of the drive ring 11 drives the damping gear ring 12 to rotate through the double-headed gear 14. The damping spring 15 on the inner wall of the damping gear ring 12 provides appropriate resistance, making the entire rotation process more stable and controllable, preventing the retaining tube 8 from rotating too fast or unstable, and ensuring that the locking spring block 101 can smoothly enter or disengage from the retaining groove 9.

[0028] Place the protection plate 2 on top of the power supply box 16. The snap-fit ​​rod 7 passes through the mounting box 19 and mating box 20 on the protection plate 2. The limiting block 18 remains in contact with the top of the protection plate 2. Insert the snap-fit ​​rod 7 into the snap-fit ​​tube 8 on the support tube 6. The snap-fit ​​rod 7 is held in the appropriate position by the action of the push-out spring 23. Rotate the snap-fit ​​tube 8. At this time, the drive ring 11 rotates accordingly. The damping gear ring 12 rotates smoothly through the double-headed toothed rod 14. The sealing frame 10 in the snap-fit ​​tube 8 pushes the locking spring block 101 into the slot 9 and seals and locks it. After the connection is completed, the protection plate 2 and the bottom protection plate 5 form a comprehensive protection for the power supply box 16. The reinforcing rod 3 provides structural support and together protects the power supply box 16 from external impact and environmental influence. When disassembly is required, rotate the snap-fit ​​tube 8 in the opposite direction. The damping gear ring 12 provides smooth resistance. The sealing frame 10 leaves the locking spring block 101. The locking spring block 101 retracts and disengages from the slot 9. Then pull out the snap-fit ​​rod 7 to achieve quick disassembly.

[0029] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A durable frame for an electric bicycle, characterized in that, It includes the frame body, power protection mechanism, quick-connect mechanism, and connection auxiliary mechanism; among which, The power protection mechanism includes a protection plate and a reinforcing rod. A mounting frame is installed at the top end of the frame body. The reinforcing rod is installed between the mounting frame and the frame body. The protection plate is connected to the mounting frame via the quick-connect mechanism. A bottom protection plate is installed at the bottom end of one end of the protection plate. The quick-connect mechanism includes a support tube and a snap-fit ​​rod. The support tube is fixedly installed at the bottom end of the mounting frame. A snap-fit ​​tube is installed at one end of the support tube with a limited rotation. A snap-fit ​​groove is opened on the inner wall of the snap-fit ​​tube. A locking spring block is installed on the outer wall of the snap-fit ​​rod. In the initial state, the locking spring block is away from the snap-fit ​​groove. A sealing frame is installed on the inner wall of the snap-fit ​​tube. The rotation of the sealing frame can push the locking spring block into the snap-fit ​​groove and seal one end of the locking spring block in the snap-fit ​​groove.

2. The durable electric bicycle frame according to claim 1, characterized in that, The connecting auxiliary mechanism includes a drive ring and a damping toothed ring. The drive ring is installed at the bottom end of the side wall of the clamping tube, and an external toothed ring is installed at the bottom end of the drive ring. The damping toothed ring is rotatably mounted on the outer wall of the support tube. A double-headed toothed rod is meshed between the damping toothed ring and the external toothed ring. A damping spring is installed on the inner wall of the damping toothed ring. When the drive ring rotates, it causes the damping toothed ring to rotate stably, thereby causing the clamping tube to rotate stably on the support tube.

3. The durable electric bicycle frame according to claim 1, characterized in that, A power supply box is installed on the frame body, and the protection plate mounting plate is located at the top of the power supply box.

4. The durable electric bicycle frame according to claim 1, characterized in that, A connecting plate is installed at the bottom of the outer wall of the support tube, and the connecting plate is fixedly installed at the bottom of the mounting frame.

5. The durable electric bicycle frame according to claim 1, characterized in that, One end of the locking rod is equipped with a limiting block, and one end of the limiting block is in contact with the top end of the protective plate. One end of the locking rod extends through the protective plate and engages with the support tube.

6. The durable electric bicycle frame according to claim 5, characterized in that, An installation box is mounted on the protective plate, and the limiting block is installed inside the installation box. A mating box is mounted on the protective plate, and the mating box is set parallel to and at the same height as the installation box.

7. The durable electric bicycle frame according to claim 2, characterized in that, A support plate is fixedly installed on the outer wall of the support tube, and the double-headed toothed rod is set to rotate at the upper limit of the support plate.

8. The durable electric bicycle frame according to claim 1, characterized in that, An inner retaining ring is installed on the inner wall of the support tube, and a push-out spring is installed on the side wall of the snap-fit ​​rod, with one end of the push-out spring in contact with one end face of the inner retaining ring.

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