Foldable electric bicycle

Abstract

The utility model discloses a foldable electric bicycle which comprises a bicycle frame, the bicycle frame comprises a front bicycle frame body, a middle bicycle frame body and a rear bicycle frame body, wheels are arranged on the front bicycle frame body and the rear bicycle frame body, a height-adjustable seat is arranged on the middle bicycle frame body, and the rear bicycle frame body is rotationally arranged on the middle bicycle frame body and can be locked on the middle bicycle frame body; the connecting device is arranged at the joint of the front frame and the middle frame and used for connecting the front frame and the middle frame, the connecting device comprises a sleeve, a sliding block and an inserting block, an inserting hole is formed in the sleeve, the sliding block slides in the inserting hole, the inserting block is hinged to the sliding block, the sleeve is fixed to the front frame, and the inserting block is fixed to the middle frame. The inserting block is fixed to the middle frame, and the middle frame is sleeved with a threaded ring used for locking the inserting block.

Description

Technical Field

[0001] This application relates to the field of bicycle technology, and in particular to a foldable electric bicycle. Background Technology

[0002] With the acceleration of urbanization and the enhancement of people's environmental awareness, electric bicycles, as a green and convenient means of transportation, have been favored by more and more consumers.

[0003] Most existing electric bicycle frames adopt a fixed design. When they need to be carried or stored, their large size often becomes a burden for users, especially in scenarios such as public transportation transfers, indoor parking, or long-distance travel. Their large size makes them inconvenient to store and transport, and it is difficult to fit them into storage spaces such as trunks, thus limiting the scope of use of traditional electric bicycles.

[0004] Based on this, this application aims to propose a foldable electric bicycle to solve the above problems.

[0005] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0006] Based on this, this application provides a foldable electric bicycle to solve one of the aforementioned technical problems.

[0007] The technical solution adopted by this application to solve its technical problem is: a foldable electric bicycle, comprising: a frame, the frame including a front frame, a middle frame and a rear frame, wheels provided on the front frame and the rear frame, a height-adjustable seat provided on the middle frame, and the rear frame rotating on the middle frame and lockable on the middle frame; a connecting device, disposed at the connection point of the front frame and the middle frame, for connecting the front frame and the middle frame, including a sleeve, a sliding block and a plug-in block. The sleeve has a insertion hole, the sliding block slides in the insertion hole, the insertion block is hinged to the sliding block, the sleeve is fixed to the front frame, the insertion block is fixed to the intermediate frame, and a threaded ring for locking the insertion block is sleeved on the intermediate frame; when the insertion block is disengaged from the insertion hole, the front frame and the intermediate frame can rotate horizontally; when the insertion block is inserted into the insertion hole and locked by the threaded ring, the front frame and the intermediate frame are fixedly connected.

[0008] In some embodiments, a threaded sleeve is provided at the end of the sleeve, an internal thread is formed on the inner wall of the threaded sleeve, and an external thread is formed on the outer wall of the threaded ring. When the threaded ring and the threaded sleeve are threadedly connected, the insertion block is locked in the insertion hole.

[0009] In some embodiments, a regular hexagonal operating part is fixedly provided at one end of the threaded ring.

[0010] In some embodiments, the sliding block and the plug-in block are provided with mutually communicating limiting grooves, and a limiting block matching the limiting groove is fixedly provided in the plug-in hole, and the limiting block slides in the limiting groove.

[0011] In some embodiments, the sliding block and the plug block are hinged to each other by an intermediate member. One end of the intermediate member rotates on the plug block, and the other end rotates on the sliding block. The intermediate member can fit against the plug block and be inserted into the plug hole together with the plug block.

[0012] In some embodiments, the connecting device is made of iron, and a magnet is fixed to the end of the plug block near the sliding block, so that the sliding block can be attracted to the plug block by the magnet.

[0013] In some embodiments, the front frame and the intermediate frame are connected by two of the aforementioned connecting devices, and the front frame and the intermediate frame are provided with a plurality of reinforcing bars to improve the overall structural strength of the frame.

[0014] In some embodiments, a battery pack and a drive assembly are fixed on the intermediate frame. The drive assembly can drive the wheels to rotate via pedals on the drive assembly, and can also drive the wheels to rotate via a motor inside the drive assembly.

[0015] In some embodiments, the rear frame includes a first rear bracket and a second rear bracket. The first rear bracket is rotatable on the intermediate frame, and the second rear bracket is provided with a first connecting plate. A connecting rod extends upward from the top of the first connecting plate, and the top of the connecting rod is threaded.

[0016] In some embodiments, a second connecting plate is formed on the intermediate frame, and a locking hole matching the connecting rod is provided on the second connecting plate. After the connecting rod passes through the locking hole, the rear frame is locked by a nut threadedly engaging with the connecting rod.

[0017] The beneficial effects of this application are as follows: the front frame and the middle frame are connected by a connecting device. When the threaded ring and the threaded sleeve are engaged, the sliding block and the plug block are restricted in the sleeve, so that the front frame and the middle frame are rigidly connected and a certain structural strength is guaranteed. When the engagement between the threaded ring and the threaded sleeve is released, the plug block is moved out of the plug hole, and the middle frame and the front frame can be folded laterally through the intermediate part. The rear frame can be folded longitudinally through the first rear support. When in use, the rear frame can be locked on the middle frame. When folded, the volume of the electric bicycle is greatly reduced, and a certain structural strength is guaranteed when in use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of this application.

[0020] Figure 2 This is an exploded schematic diagram of the front frame and intermediate frame of the vehicle as described in this application.

[0021] Figure 3 This is a schematic diagram of the folded state of this application.

[0022] Figure 4 This is another schematic diagram of the folded state of this application.

[0023] Figure 5 This is a schematic diagram of the folding connection device of this application.

[0024] Explanation of reference numerals: 1. Front frame, 2. Intermediate frame, 3. Rear frame, 301. First rear support, 302. Second rear support, 4. Wheel, 5. Seat, 6. Connecting device, 601. Sleeve, 602. Sliding block, 603. Insertion block, 7. Insertion hole, 8. Threaded ring, 801. Operating part, 9. Threaded sleeve, 10. Limiting groove, 11. Limiting block, 12. Intermediate component, 13. Magnet, 14. Battery pack, 15. Drive assembly, 16. First connecting plate, 17. Second connecting plate, 18. Connecting rod, 19. Locking hole, 20. Nut, 21. Reinforcing rod. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0026] In the embodiments of this application, please refer to Figure 1-5As shown, this foldable electric bicycle mainly includes: a frame, which includes a front frame 1, a middle frame 2, and a rear frame 3. Wheels 4 are mounted on the front frame 1 and the rear frame 3. A height-adjustable seat 5 is mounted on the middle frame 2. The rear frame 3 rotates on the middle frame 2 and can be locked onto it. A connecting device 6 is disposed at the connection point of the front frame 1 and the middle frame 2, used to connect the front frame 1 and the middle frame 2. It includes a sleeve 601, a sliding block 602, and a plug-in block 603. A plug-in hole is formed inside the sleeve 601. 7. The sliding block 602 slides within the insertion hole 7, the insertion block 603 is hinged to the sliding block 602, the sleeve 601 is fixed to the front frame 1, the insertion block 603 is fixed to the intermediate frame 2, and a threaded ring 8 for locking the insertion block 603 is sleeved on the intermediate frame 2; when the insertion block 603 disengages from the insertion hole 7, the front frame 1 and the intermediate frame 2 can rotate horizontally; when the insertion block 603 is inserted into the insertion hole 7 and locked by the threaded ring 8, the front frame 1 and the intermediate frame 2 are fixedly connected.

[0027] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0028] like Figure 2 As shown, a threaded sleeve 9 is provided at the end of the sleeve 601. An internal thread is formed on the inner wall of the threaded sleeve 9, and an external thread is formed on the outer wall of the threaded ring 8. When the threaded ring 8 and the threaded sleeve 9 are threadedly connected, the insertion block 603 is locked in the insertion hole 7. When the threaded ring 8 and the threaded sleeve 9 are threadedly connected, the insertion block 603 and the sliding block 602 are locked in the insertion hole 7 in the sleeve 601, and the front frame 1 and the middle frame 2 are rigidly connected, so that the electric bicycle can be used normally and has a certain structural strength. When the threaded ring 8 and the threaded sleeve 9 are threadedly separated, the insertion block 603 can be pulled out of the insertion hole 7 and rotate relative to the sliding block 602. Thus, the front frame 1 and the middle frame 2 can rotate laterally relative to each other, while the sliding block 602 can only move within the insertion hole 7.

[0029] Specifically, a regular hexagonal operating part 801 is fixedly provided at one end of the threaded ring 8. The operating part 801 is used for the user to operate and rotate the threaded ring 8.

[0030] Furthermore, the sliding block 602 and the plug-in block 603 are provided with mutually communicating limiting grooves 10. A limiting block 11 matching the limiting groove 10 is fixedly provided in the plug-in hole 7. The limiting block 11 slides in the limiting groove 10. During assembly, the sliding block 602 must first be placed into the plug-in hole 7, and then the limiting block 11 is fixed in an appropriate position in the plug-in hole 7. The limiting block 11 is used to limit the position of the sliding block 602 and prevent the sliding block 602 from dislodging from the plug-in hole 7.

[0031] like Figure 3 As shown, the sliding block 602 and the plug-in block 603 are hinged together by an intermediate member 12. One end of the intermediate member 12 rotates on the plug-in block 603, and the other end rotates on the sliding block 602. The intermediate member 12 can fit against the plug-in block 603 and be inserted into the plug-in hole 7 together with the plug-in block 603. The intermediate member 12 prevents the front frame 1 and the middle frame 2 from interfering with each other when rotating or folding. The rotational connection between the intermediate member 12, the sliding block 602, and the plug-in block 603 has a certain strength, which can ensure the stability of the overall connection between the middle frame 2 and the front frame 1 after folding.

[0032] Specifically, the connecting device 6 is made of iron, and a magnet 13 is fixed to the end of the plug block 603 near the sliding block 602. The sliding block 602 can be attracted to the plug block 603 by the magnet 13. Therefore, the plug block 603 can be accurately spliced ​​with the sliding block 602 so that they can be re-inserted into the plug hole 7 together.

[0033] Furthermore, the front frame 1 and the intermediate frame 2 are connected by two connecting devices 6, and a number of reinforcing rods 21 are provided on the front frame 1 and the intermediate frame 2 to improve the overall structural strength of the frame.

[0034] like Figure 1 As shown, a battery pack 14 and a drive assembly 15 are fixed on the intermediate frame 2. The drive assembly 15 can drive the wheel 4 to rotate through the pedal on the drive assembly 15, and can also drive the wheel 4 to rotate through the motor inside the drive assembly 15. The battery pack 14 supplies power to the motor.

[0035] Furthermore, the rear frame 3 includes a first rear bracket 301 and a second rear bracket 302. The first rear bracket 301 rotates on the intermediate frame 2. The second rear bracket 302 is provided with a first connecting plate 16. A connecting rod 18 extends upward from the top of the first connecting plate 16. The top of the connecting rod 18 is threaded.

[0036] Furthermore, a second connecting plate 17 is formed on the intermediate frame 2. The second connecting plate 17 has a locking hole 19 that matches the connecting rod 18. After the connecting rod 18 passes through the locking hole 19, the rear frame 3 is locked by the threaded engagement of the nut 20 with the connecting rod 18. When the connecting rod 18 is disengaged from the locking hole 19 and the rear frame 3 can rotate relative to it, the nut 20 needs to be screwed back onto the connecting rod 18 to prevent the nut 20 from being lost.

[0037] like Figure 3-4 As shown, this electric bicycle can fold only the front frame 1 or fold both the front frame 1 and the rear frame 3 simultaneously. The rear frame 3 is folded by rotating it downwards. Both methods reduce the size occupied. The folding method can be selected according to usage habits and specific usage environment. When folding, the seat 5 can also be raised or lowered as needed. Specifically, when folding, first operate the operating part 801 of the screw ring 8 to disengage the screw ring 8 from the screw sleeve 9, then pull the front frame 1 to disengage the plug block 603 from the plug hole 7. The front frame 1 can then be rotated and folded horizontally. The rear frame 3 can be rotated and folded vertically by screwing the nut 20 to disengage the nut 20 from the connecting rod 18.

[0038] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A foldable electric bicycle, characterized in that, include: The vehicle frame includes a front frame, a middle frame, and a rear frame. Wheels are mounted on the front and rear frames. A height-adjustable seat is mounted on the middle frame. The rear frame rotates on the middle frame and can be locked onto the middle frame. A connecting device is provided at the connection between the front frame and the intermediate frame of the vehicle for connecting the front frame and the intermediate frame. It includes a sleeve, a sliding block and a plug-in block. The sleeve has a plug-in hole, the sliding block slides in the plug-in hole, and the plug-in block is hinged to the sliding block. The sleeve is fixed on the front frame, the plug-in block is fixed on the intermediate frame, and a threaded ring for locking the plug-in block is sleeved on the intermediate frame. When the plug block disengages from the plug hole, the front frame and the intermediate frame can rotate horizontally. When the plug block is inserted into the plug hole and locked by the threaded ring, the front frame and the intermediate frame are fixedly connected.

2. A foldable electric bicycle according to claim 1, characterized in that, A threaded sleeve is provided at the end of the sleeve, an internal thread is formed on the inner wall of the threaded sleeve, and an external thread is formed on the outer wall of the threaded ring. When the threaded ring and the threaded sleeve are threadedly connected, the insertion block is locked in the insertion hole.

3. A foldable electric bicycle according to claim 2, characterized in that, One end of the threaded ring is fixedly provided with a regular hexagonal operating part.

4. A foldable electric bicycle according to claim 1, characterized in that, The sliding block and the plug-in block are provided with mutually communicating limiting grooves, and a limiting block matching the limiting groove is fixedly installed in the plug-in hole, and the limiting block slides in the limiting groove.

5. A foldable electric bicycle according to claim 1, characterized in that, The sliding block and the plug-in block are hinged together by an intermediate member. One end of the intermediate member rotates on the plug-in block, and the other end rotates on the sliding block. The intermediate member can fit against the plug-in block and be inserted into the plug-in hole together with the plug-in block.

6. A foldable electric bicycle according to claim 1, characterized in that, The connecting device is made of iron, and a magnet is fixed to the end of the plug block near the sliding block. The sliding block can be attracted to the plug block by the magnet.

7. A foldable electric bicycle according to claim 1, characterized in that, The front frame and the intermediate frame are connected by two connecting devices, and several reinforcing bars are provided on the front frame and the intermediate frame to improve the overall structural strength of the frame.

8. A foldable electric bicycle according to claim 1, characterized in that, The intermediate frame is equipped with a battery pack and a drive assembly. The drive assembly can drive the wheels to rotate via foot pedals or via a motor inside the drive assembly.

9. A foldable electric bicycle according to claim 8, characterized in that, The rear frame includes a first rear bracket and a second rear bracket. The first rear bracket rotates on the intermediate frame. The second rear bracket is provided with a first connecting plate. A connecting rod extends upward from the top of the first connecting plate, and the top of the connecting rod is threaded.

10. A foldable electric bicycle according to claim 9, characterized in that, A second connecting plate is formed on the intermediate frame. The second connecting plate has a locking hole that matches the connecting rod. After the connecting rod passes through the locking hole, the rear frame is locked by a nut threadedly engaging with the connecting rod.

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