A folding handlebar for a bicycle

Abstract

A bicycle folding handle, it includes left handle, left connecting rod, right handle, right connecting rod, folding joint, handlebar tube connecting device; folding joint and commercially available 0-180 degree fishing chair back gear adjuster structure is same; through the folding joint locking mechanism operating lever head connection screw A, folding joint and handlebar tube connecting device are connected, handlebar tube connecting device pipe A is used for and handlebar tube connection; The left handle is installed on the left side of the left connecting rod, and then the right side of the left connecting rod is connected with the rotating arm A of the folding joint, and the right handle is installed on the right side of the right connecting rod, and then the left side of the right connecting rod is connected with the rotating arm B of the folding joint; The bicycle folding handle, folding structure is simple, the minimum size in left and right directions after folding, and the state after completely unfolding and completely folding can be locked. Simple and fast operation.

Description

Technical Field

[0001] This utility model belongs to the field of folding bicycle technology, specifically relating to a bicycle folding handlebar. Background Technology

[0002] Folding bicycles are already very popular. However, due to strict requirements on the total length, height, and width of items carried on subways and high-speed trains, folding bicycles need to be folded and packed in boxes or bags for easy transport. Therefore, bicycle manufacturers have carefully designed various components, including the handlebars, to make them as small as possible when folded. However, the folding handlebars are not yet at their smallest size in the left and right directions, generally between 10cm and 15cm. The left and right handlebars have separate folding joints, requiring them to be folded separately, which involves more movement. Furthermore, the folded handlebars are not locked in place, causing them to wobble and making them inconvenient to carry. Summary of the Invention

[0003] This utility model provides a bicycle folding handlebar to solve the technical problems of existing technologies, such as large lateral dimensions after folding, complex folding structure, numerous operation steps, slow and inconvenient operation, and wobbling handlebars without locking after folding. The folding mechanism is simple, requires fewer folding and locking actions, is quick to operate, has a locking mechanism after folding, and has a small lateral dimension after folding.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a bicycle folding handlebar, which includes a left handlebar, a left connecting rod, a right handlebar, a right connecting rod, a folding joint, and a handlebar stem connecting device; The folding joint has the same structure as commercially available 0-180 degree fishing chair backrest gear adjusters; the 0-180 degree fishing chair backrest gear adjuster includes two identical gear folding parts A and B, as well as a locking mechanism A; gear folding part A has a gear disk A at the head of the rotating arm A, and gear folding part B has a gear disk B at the head of the rotating arm B. The rotating arms A and B are a section of round tube, connecting two objects and allowing folding and rotation between them. Gear disk A... The teeth of gear A and gear B are interlocked around their outer circumference. A spring is also provided between gear A and gear B within the teeth of gear A and gear B. Locking mechanism A uses an eccentric cam design, with a structure and principle similar to the locking mechanism of a known bicycle seatpost clamp. It includes a locking mechanism operating lever, which has the same structure as a known bicycle seatpost clamp quick-release lever. A screw A is connected to the head of the locking mechanism operating lever. Screw A passes through the central connecting hole A of gear A and the central connecting hole B of gear B and is then fixed with a nut. When the locking mechanism operating lever is released, the spring separates the teeth of gear A and gear B. To adjust the folding angle between gear folding component A and gear folding component B, rotate rotating arm A or rotating arm B, and then lock using the locking mechanism operating lever. The folding joint of this application also has additional locking holes A and B on gear B, used to lock the position when the folding joint is fully extended and fully folded, and when the stem connecting device is connected. The stem connector is used to connect the folding joint and the stem. It consists of a cylindrical section A and a cylindrical tube A perpendicularly connected. The cylindrical tube A connects to the bicycle stem. The center of the cylindrical section A consists of a screw hole A at the head and a hexagonal hole A at the tail. It also includes a spring pin. When assembling the stem connector and the folding joint, the screw A at the head of the locking mechanism operating lever passes through the central connecting holes A and B of the gear disk A and then is inserted into the screw hole A. The nut is then inserted into the hexagonal hole A and fixed to the screw A. The head of the cylindrical section A is a semi-cylinder for a flat connection between the head of the cylindrical section A and the gear folding component B. Parallel to the axis of the cylindrical section A, a circular hole for the spring pin is provided on the circular surface for installing the spring pin. After the folding joint and the stem connector are assembled, when the folding joint is fully extended, the head of the spring pin is inserted into the locking hole B to lock the fully extended state; when the folding joint is fully folded, the head of the spring pin is inserted into the locking hole A to lock the fully folded state. To change the folding joint from fully extended to fully folded, first release the locking mechanism lever, then pull the pull ring at the end of the spring pin. The head of the spring pin will then leave the locking hole B. Rotating arm B will rotate downwards and release the spring pin. When rotating arm B rotates 90 degrees, the head of the spring pin will insert into the locking hole A under the action of the spring. Then, rotating arm A will rotate downwards 90 degrees, locking the locking mechanism lever to lock the mechanism in the fully folded state. The locking mechanism can also be restored to the fully extended state and locked. The left handlebar is installed on the left side of the left connecting rod, and the operation is the same as for bicycle handlebars. Then, insert the rotating arm A of the gear folding component A into the right side of the left connecting rod and secure it with screws through the fixing hole A on the rotating arm A. The right handlebar is installed on the right side of the right connecting rod. Then, insert the rotating arm B of the gear folding component B into the left side of the right connecting rod and secure it with screws through the fixing hole B on the rotating arm B. This completes the installation of the entire bicycle folding handlebar.

[0005] The beneficial effects of this utility model are: 1. The entire folding joint has only a few parts, the folding structure is simple, and it has locking mechanisms when fully unfolded and fully folded.

[0006] 2. Simple and quick operation. For example, when the folding joint is fully folded and locked, to change the folding state of the folding joint to fully folded, simply release the locking mechanism operating lever, then pull the spring pin. Rotating arm B rotates downward and releases the spring pin. When rotating arm B rotates 90 degrees, the spring pin inserts into the locking hole B under the action of the spring. Then, after rotating arm A rotates downward 90 degrees, the locking mechanism operating lever is tightened, locking the locking mechanism in the fully folded state. Similarly, the locking mechanism can also be restored to the fully unfolded state and locked.

[0007] 3. The minimum dimension when folding left and right is the sum of the diameters of rotating arm A and rotating arm B. Attached Figure Description

[0008] Figure 1 A diagram showing the folding joint fully folded without the locking mechanism lever installed.

[0009] Figure 2 A diagram showing the locking mechanism lever when the folding joint is fully folded.

[0010] Figure 3 A diagram showing the folding joint folded 90 degrees with the locking mechanism lever in the front position.

[0011] Figure 4 A schematic diagram of gear folding component A and gear folding component B of the folding joint is shown, with the concave and convex teeth of gear disk A and gear disk B of the folding joint displayed.

[0012] Figure 5 A schematic diagram of the front view of the riser connection device.

[0013] Figure 6 A schematic diagram of the side and back view when the riser connection device is not equipped with a spring pin.

[0014] Figure 7 A schematic diagram from the side and back view when the riser connector is equipped with a spring pin.

[0015] Figure 8 A diagram showing the folding joint fully extended at 180 degrees without the spring pin installed.

[0016] Figure 9 A diagram showing the folding joint fully folded and fitted with a spring pin.

[0017] In the diagram: 1. Rotating arm A, 2. Gear disk A, 3. Rotating arm B, 4. Gear disk B, 5. Fixing hole A, 6. Fixing hole B, 7. Locking hole A, 8. Locking hole B, 9. Locking mechanism operating lever, 10. Connecting hole B, 11. Connecting hole A, 12. Teeth of gear disk B, 13. Teeth of gear disk A, 14. Semi-cylinder, 15. Circular tube A 16. Spring pin round hole, 17. Hexagonal hole A, 18. Screw hole A, 19. Cylindrical A, 20. Spring pin tail pull ring, 21. Spring pin head, 22. Screw A. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-9 The present invention will be further illustrated by the embodiments.

[0019] See Example 1 Figures 1-9 It includes a left handle, a left connecting rod, a right handle, a right connecting rod, a folding joint, and a handlebar stem connection device; The folding joint has the same structure as commercially available 0-180 degree fishing chair backrest gear adjusters; the 0-180 degree fishing chair backrest gear adjuster includes two identical gear folding parts A and B, and a locking mechanism A; gear folding part A has a gear disk A2 at the head of the rotating arm A1, and gear folding part B has a gear disk B4 at the head of the rotating arm B3. The rotating arm A1 and rotating arm B3 are a section of round tube, which connects two objects and allows them to fold and rotate. The concave and convex teeth on the outer circumference of gear disk A2 and gear disk B4 interlock, and the concave and convex teeth 13 of gear disk A and 12 of gear disk B interlock. A spring is also provided between 4; the locking mechanism A adopts an eccentric cam design, and its structural principle is the same as that of the known bicycle seat post clamp locking mechanism. It includes a locking mechanism operating rod 9, which has the same structure as the known bicycle seat post clamp quick release rod. The head of the locking mechanism operating rod 9 is connected to a screw A 22. The screw A 22 passes through the center connecting hole A 11 of the gear disk A 2 and the center connecting hole B 10 of the gear disk B 4 and is then connected and fixed with a nut. When the locking mechanism operating rod 9 is released, the spring separates the concave and convex teeth 13 of the gear disk A and the concave and convex teeth 12 of the gear disk B. When it is necessary to adjust the folding angle between the gear folding component A and the gear folding component B, rotate the rotating arm A 1 or the rotating arm B 3, and then lock it through the locking mechanism operating rod 9; In this embodiment, the folding joint is additionally provided with locking holes A 7 and B 8 on the gear disk B 4, which are used to lock the position when the folding joint is fully unfolded and fully folded, and when the stem connecting device is connected. The stem connector is used to connect the folding joint and the stem. It consists of a cylindrical section A 19 and a cylindrical tube A 15 connected vertically. The cylindrical tube A 15 connects to the bicycle stem. The center of the cylindrical section A 19 is formed by a screw hole A at the head of the cylindrical section A 19 and a hexagonal hole A 17 at the tail of the cylindrical section A 19. It also includes a spring pin. When assembling the stem connector and the folding joint, the screw A 22 at the head of the locking mechanism operating lever 9 passes through the connecting hole A 11 in the center of the gear disk A 2 and the connecting hole B 10 in the center of the gear disk B 4, and then is inserted into the screw hole A. The nut is inserted into the hexagonal hole A 17 and then connected and fixed with the screw A 22. The head of the cylindrical section A 19 is a semi-cylinder 14, which is used for the flat connection between the head of the cylindrical section A 19 and the gear folding component B; and the cylindrical section A 19 19 14. 19. The axis is parallel, and a spring pin hole 16 is provided on the circular surface for installing the spring pin. After the folding joint and the riser connecting device are assembled, when the folding joint is fully unfolded, the spring pin head 21 is inserted into the locking hole B 8 to lock the fully unfolded state; when the folding joint is fully folded, the spring pin head 21 is inserted into the locking hole A 7 to lock the fully folded state. To change the folding joint from fully extended to fully folded, first release the locking mechanism operating lever 9, then pull the spring pin tail ring 20. At this time, the spring pin head 21 leaves the locking hole B8, the rotating arm B3 rotates downward and releases the spring pin. When the rotating arm B3 rotates 90 degrees, the spring pin head 21 inserts into the locking hole A7 under the action of the spring. Then, after the rotating arm A1 rotates downward 90 degrees, the locking mechanism operating lever 9 is locked, locking the locking mechanism in the fully folded state. Similarly, the locking mechanism can also be restored to the fully extended state and locked. The left handlebar is installed on the left side of the left connecting rod, and the operation is the same as the bicycle handlebar installation. Then, the rotating arm A1 of the gear folding component A is inserted into the right side of the left connecting rod, and the connection is fixed by screws through the fixing hole A5 on the rotating arm A1. The right handlebar is installed on the right side of the right connecting rod, and the rotating arm B3 of the gear folding component B is inserted into the left side of the right connecting rod, and the connection is fixed by screws through the fixing hole B6 on the rotating arm B3. This completes the installation of the entire bicycle folding handlebar.

[0020] The accompanying drawings and embodiments illustrate the principles and design features of this patent, which can be easily replicated by those skilled in the art. This patent is characterized by its simple operation, practicality, and reliability. Mass production and distribution to consumers will reduce the folded size of folding bicycles and improve their portability, thus possessing considerable economic value.

[0021] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this invention and implement it accordingly. They should not be used to limit the scope of protection of this invention. All modifications made according to the spirit and essence of the main technical solution of this invention should be covered within the scope of protection of this invention.

Claims

1. A bicycle folding handlebar, characterized in that: It includes a left handle, a left connecting rod, a right handle, a right connecting rod, a folding joint, and a handlebar connecting device; The folding joint has the same structure as commercially available 0-180 degree fishing chair backrest gear adjusters; the 0-180 degree fishing chair backrest gear adjuster includes two identical gear folding parts A and B, as well as a locking mechanism A; gear folding part A has a gear disk A at the head of the rotating arm A, and gear folding part B has a gear disk B at the head of the rotating arm B. The rotating arms A and B are a section of round tube, connecting two objects and allowing folding and rotation between them. Gear disk A... The teeth of gear A and gear B are interlocked around their outer circumference. A spring is also installed between gear A and gear B within the teeth of gear A and gear B. Locking mechanism A uses an eccentric cam design, with a structure and principle similar to the known locking mechanism of a bicycle seatpost clamp. It includes a locking mechanism operating lever, which has the same structure as the known quick-release lever of a bicycle seatpost clamp. A screw A is connected to the head of the locking mechanism operating lever. Screw A passes through the central connecting hole A of gear A and the central connecting hole B of gear B and is then fixed to a nut. When the locking mechanism operating lever is released, the spring separates the teeth of gear A and gear B. To adjust the folding angle between gear folding component A and gear folding component B, rotate rotating arm A or rotating arm B, and then lock using the locking mechanism operating lever. The folding joint is additionally provided with locking holes A and B on the gear disk B, which are used to lock the position when the folding joint is fully extended and fully folded, and when the riser connecting device is connected. The stem connector is used to connect the folding joint and the stem. It consists of a cylindrical section A and a cylindrical tube A connected perpendicularly. The cylindrical tube A is used to connect to the bicycle stem. The center of the cylindrical section A is composed of a screw hole A at the head and a hexagonal hole A at the tail. It also includes a spring pin. When assembling the stem connector and the folding joint, the screw A at the head of the locking mechanism operating lever passes through the central connecting hole A of gear plate A and the central connecting hole B of gear plate B, and then is inserted into the screw hole A. The nut is inserted into the hexagonal hole A and then connected and fixed with the screw A. The head of the cylindrical section A is a semi-cylinder used for the flat connection between the head of the cylindrical section A and the gear folding component B. Parallel to the axis of the cylindrical section A, a spring pin hole is provided on the circular surface for installing the spring pin. After the folding joint and the stem connector are assembled, when the folding joint is fully extended, the head of the spring pin is inserted into the locking hole B to lock the fully extended state. When the folding joint is fully folded, the head of the spring pin is inserted into the locking hole A to lock the fully folded state. To change the folding joint from fully extended to fully folded, first release the locking mechanism lever, then pull the pull ring at the end of the spring pin. The head of the spring pin will then leave the locking hole B. Rotating arm B will rotate downwards and release the spring pin. When rotating arm B rotates 90 degrees, the head of the spring pin will insert into the locking hole A under the action of the spring. Then, rotating arm A will rotate downwards 90 degrees, locking the locking mechanism lever to lock the mechanism in the fully folded state. The locking mechanism can also be restored to the fully extended state and locked. The left handlebar is installed on the left side of the left connecting rod, and the operation is the same as for bicycle handlebars. Then, insert the rotating arm A of the gear folding component A into the right side of the left connecting rod and secure it with screws through the fixing hole A on the rotating arm A. The right handlebar is installed on the right side of the right connecting rod. Then, insert the rotating arm B of the gear folding component B into the left side of the right connecting rod and secure it with screws through the fixing hole B on the rotating arm B. This completes the installation of the entire bicycle folding handlebar.

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