Telescoping folding bicycle

Abstract

This invention relates to a telescopic folding bicycle, comprising: a frame including a main beam tube, a front fork, and a rear fork; the main beam tube includes a first portion and a second portion that are nested together; the front fork is connected to the first portion; the rear fork is connected to the second portion; the front fork is used to mount the front wheel; and the rear fork is used to mount the rear wheel. The first portion can switch between a forward-extended first position and a rearward-retracted second position relative to the second portion, thereby allowing the telescopic folding bicycle to switch between an unfolded state and a folded state. Since the main beam tube includes the nested first and second portions, when folding the telescopic folding bicycle, simply switching the first portion from the first position to the second position relative to the second portion is sufficient. When the first portion is in the second position relative to the first portion, the size of the main beam tube is smaller, thus making the overall size of the telescopic folding bicycle smaller.

Description

Technical Field

[0001] This invention relates to a telescopic folding bicycle. Background Technology

[0002] Bicycles, also known as pedal bikes or bicycles, are typically two-wheeled land vehicles. They serve not only as an environmentally friendly mode of transportation for getting around, but also as fitness equipment for exercise and outings, making them an important tool for daily life.

[0003] Typically, some bicycles have an unfolded and a folded configuration. When unfolded, they are convenient for riding, and when folded, they are smaller in size for easy storage.

[0004] However, traditional bicycles still have a large size when folded, which makes them inconvenient to store. Summary of the Invention

[0005] Therefore, it is necessary to address the problem that traditional bicycles are still bulky when folded, causing inconvenience for storage, and to provide a telescopic folding bicycle that can reduce the size when folded for easier storage.

[0006] A telescopic folding bicycle, the telescopic folding bicycle comprising:

[0007] The frame includes a main beam tube, a front fork, and a rear fork. The main beam tube includes a first part and a second part that are sleeved together. The front fork is connected to the first part, and the rear fork is connected to the second part. The front fork is used to mount the front wheel, and the rear fork is used to mount the rear wheel. The first part includes a first connecting portion, a first folding device, and a second connecting portion. The first connecting portion is sleeved with the second part, and the second connecting portion is connected to the first connecting portion through the first folding device. The front fork is connected to the second connecting portion.

[0008] The first part is capable of switching between a first position of forward extension and a second position of backward retraction relative to the second part, so that the telescopic folding bicycle can switch between an unfolded state and a folded state.

[0009] The aforementioned telescopic folding bicycle, since the main beam tube includes a first part and a second part that are nested together, can be folded by switching the first part from a first position to a second position relative to the second part. When the first part is in the second position relative to the first part, the size of the main beam tube is smaller, which makes the overall size of the telescopic folding bicycle smaller and easier to store.

[0010] In one embodiment, the second part includes a first tube and a second tube that are sleeved together, the rear fork is connected to the first tube, and the first connecting part is sleeved to the second tube.

[0011] The first tube can switch between a third position extending backward and a fourth position retracting forward relative to the second tube, so that the telescopic folding bicycle can switch between the unfolded state and the folded state; or the first tube is hinged to the second tube, so that the telescopic folding bicycle can switch between the unfolded state and the folded state.

[0012] In one embodiment, the second tube includes a main body and a mounting part. The main body is connected to the first part and the first tube, and the mounting part is connected to the main body and used to mount the pedal. The frame also includes a support rod, which includes a first support part and a second support part. The first support part is connected to the rear fork, and the second support part is connected to the mounting part. The first support part and the second support part are hinged together.

[0013] When the telescopic folding bicycle is in the unfolded state, the first support part and the second support part are connected and supported between the rear fork and the mounting part; when the telescopic folding bicycle is in the folded state, the first support part and the second support part rotate and fold.

[0014] In one embodiment, the support rod further includes a screwing part, and the first support part and the second support part have an engagement part on their respective sides facing each other, and the screwing part passes through the first support part and the second support part;

[0015] When the telescopic folding bicycle is in the unfolded state, the first support part and the second support part engage, and the screwing part fixes the first support part and the second support part; when the telescopic folding bicycle switches from the unfolded state to the folded state, the screwing part is screwed to operate the engagement part of the first support part and the second support part to separate and cause them to rotate relative to each other.

[0016] In one embodiment, the frame further includes a riser and a rear seat, the riser being used to mount a saddle, and the rear seat and the rear fork being connected to the second part;

[0017] When the telescopic folding bicycle is in the unfolded state, the vertical tube passes through the first part and the second part; when the telescopic folding bicycle is in the folded state, the vertical tube is detached from the first part and the second part and installed on the rear seat.

[0018] In one embodiment, the frame further includes a seat tube for mounting handlebars, the seat tube being mounted on the second connection portion.

[0019] In one embodiment, the riser includes a third connecting part, a second folding device, and a fourth connecting part. The third connecting part is connected to the second connecting part, and the fourth connecting part is connected to the third connecting part through the second folding device and is used to install handlebars.

[0020] When the telescopic folding bicycle is in the folded state, the fourth connecting part is folded to the third connecting part via the second folder.

[0021] In one embodiment, the telescopic folding bicycle further includes a front wheel and a rear wheel, the front wheel being mounted on the front fork and the rear wheel being mounted on the rear fork;

[0022] When the telescopic folding bicycle is in the folded state, the front wheel and the rear wheel are coaxially arranged, and the handlebars are clamped between the front wheel and the rear wheel.

[0023] In one embodiment, the telescopic folding bicycle further includes a first quick-release element, which is mounted on the outermost of the first part and the second part; the first quick-release element is used to lock or unlock the connection between the first part and the second part.

[0024] In one embodiment, the telescopic folding bicycle further includes a caster assembly connected to the first or second portion and movable relative to the frame to switch between a fifth and a sixth position, enabling it to contact the ground to support the telescopic folding bicycle or to detach from the ground. Attached Figure Description

[0025] Figure 1 This is an isometric view of a telescopic folding bicycle in its unfolded state, according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1 Another axonometric view of the telescopic folding bicycle shown;

[0027] Figure 3 for Figure 1 A partial exploded view of the telescopic folding bicycle shown;

[0028] Figure 4 for Figure 1 The image shown is an axonometric view of a telescopic folding bicycle in an intermediate state between its unfolded and folded states.

[0029] Figure 5 for Figure 1 The image shown is an axonometric view of a telescopic folding bicycle in its folded state.

[0030] Figure 6 for Figure 4 Another axonometric view of the telescopic folding bicycle shown;

[0031] Figure 7 for Figure 5 Another isometric view of the telescopic folding bicycle shown.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1000. Telescopic folding bicycle; 100. Frame; 10. Main beam tube; 11. Second part; 111. First tube body; 1111. Second deformation slit; 112. Second tube body; 1121. Main body; 1122. Mounting part; 1123. First deformation slit; 1124. Assembly part; 12. First part; 121. First connecting part; 122. First folding mechanism; 123. Second connecting part; 20. Front fork; 30. Rear fork; 40. Support rod; 41. First 42. Support section; 43. Twisting section; 44. Engaging section; 50. Vertical tube; 60. Rear seat; 61. Snap ring; 70. Third quick release part; 80. Vertical tube; 81. Third connecting part; 82. Second folding device; 83. Fourth connecting part; 200. Front wheel; 300. Rear wheel; 401. First operating handle; 500. Pedal; 600. Sprocket; 701. Second operating handle; 800. Saddle; 900. Handlebar; 1100. Swivel wheel assembly. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] See Figure 1 An embodiment of the present invention provides a telescopic folding bicycle 1000, including a frame 100, a front wheel 200 and a rear wheel 300. The frame 100 includes a main beam tube 10, a front fork 20 and a rear fork 30, both of which are connected to the main beam tube 10. The front wheel 200 is connected to the front fork 20, and the rear wheel 300 is connected to the rear fork 30.

[0041] The main beam tube 10 includes a first part 12 and a second part 11 that are nested together. The front fork 20 is connected to the first part 12, and the rear fork 30 is connected to the second part 11. The first part 12 can switch between a first position that is extended forward and a second position that is retracted backward relative to the second part 11, so that the telescopic folding bicycle 1000 can switch between an unfolded state and a folded state.

[0042] It should be noted that "forward" means that if the rear wheel 300 is fixed, and the first part 12 is extended relative to the second part 11, the front wheel 200 will move in the first direction in the forward direction, which is considered forward. "Backward" means that if the rear wheel 300 is fixed, and the first part 12 is retracted relative to the second part 11, the front wheel 200 will move in the first direction in the reverse direction, which is considered backward. It should also be noted that the length of the main beam tube 10 of the telescopic folding bicycle 1000 is greater in the unfolded state than in the folded state.

[0043] The telescopic folding bicycle 1000 provided in this application embodiment includes a main beam tube 10 comprising a first part 12 and a second part 11 that are nested together. When folding the telescopic folding bicycle 1000, the first part 12 can be switched from a first position to a second position relative to the second part 11. When the first part 12 is in the second position relative to the second part 11, the size of the main beam tube 10 is smaller, thereby making the overall volume of the telescopic folding bicycle 1000 smaller and facilitating the storage of the telescopic folding bicycle 1000.

[0044] In some embodiments, the first portion 12 is fitted inside the second portion 11. The second portion 11 includes a first tube 111 and a second tube 112 that are fitted together, with the rear fork 30 connected to the first tube 111 and the first portion 12 fitted to the second tube 112. The first tube 111 can switch between a rearwardly extended third position and a forward-retracted fourth position relative to the second tube 112, allowing the telescopic folding bicycle 1000 to switch between an unfolded state and a folded state. With this configuration, when the telescopic folding bicycle 1000 needs to switch from an unfolded state to a folded state, the first tube 111 is operated to switch from the third position to the fourth position, and the first portion 12 is operated to switch from the first position to the second position, further reducing the volume of the telescopic folding bicycle 1000 when folded, making it easier to store.

[0045] In other embodiments, the first tube 111 and the second tube 112 may be hinged to allow the telescopic folding bicycle to switch between an unfolded state and a folded state.

[0046] In one specific embodiment, the second tube 112 is sleeved within the first tube 111, and the first portion 12 is sleeved within the second tube 112. To prevent wear of the tubes during expansion and contraction, the main beam tube 10 further includes a first bushing and a second bushing. The first bushing is disposed between the first tube 111 and the second tube 112, and the second bushing is disposed between the first portion 12 and the second tube 112. Specifically, the first bushing is fixedly connected to the first tube 111, and the second bushing is fixedly connected to the second tube 112.

[0047] It is conceivable that, although in this specific embodiment the main beam pipe 10 includes three interlocking parts (first pipe body 111, second pipe body 112 and first part 12), in other embodiments the number of interlocking main beam pipes 10 is not limited.

[0048] In some embodiments, the telescopic folding bicycle 1000 further includes a first quick-release element mounted on the second tube 112, which is used to lock or unlock the connection between the second tube 112 and the first portion 12. Specifically, see [reference needed]. Figure 1 and Figure 2The second tube 112 includes a main body 1121 and a mounting part 1122 connected to each other. The main body 1121 is connected to the first tube 111 and the first part 12, and the mounting part 1122 is connected to the main body 1121. The telescopic folding bicycle 1000 also includes a pedal 500 and a sprocket 600, both of which are mounted on the mounting part 1122. The mounting part 1122 has a first deformable slit 1123. The first quick-release component includes a first through-hole and a first operating handle 401. The first through-hole passes through the first deformable slit 1123, and the first operating handle 401 is connected to the first through-hole. By operating the first operating handle 401, the size of the first deformable slit 1123 can be changed, thereby locking or unlocking the second tube 112 and the first part 12.

[0049] The telescopic folding bicycle 1000 also includes a second quick-release mechanism, which is mounted on the first tube 111 and used to lock or unlock the first tube 111 and the second tube 112. The first tube 111 has a second deformable slit 1111. The second quick-release mechanism includes a second through-part and a second operating handle 701. The second through-part passes through the second deformable slit 1111, and the second operating handle 701 is connected to the second through-part. By operating the second operating handle 701, the size of the second deformable slit 1111 can be changed, thereby locking or unlocking the first tube 111 and the second tube 112.

[0050] In some embodiments, see Figure 1 and Figure 3 The frame 100 also includes a support rod 40, which includes a first support portion 41 and a second support portion 42. The first support portion 41 is connected to the rear fork 30, and the second support portion 42 is connected to the mounting portion 1122. The first support portion 41 and the second support portion 42 are hinged together. (See reference...) Figure 1 When the telescopic folding bicycle 1000 is in the unfolded state, the first support part 41 and the second support part 42 are connected and supported between the rear fork 30 and the mounting part 1122, thereby supporting the telescopic folding bicycle 1000. (See reference...) Figure 4 and Figure 5 When the telescopic folding bicycle 1000 is in the folded state, the first support part 41 and the second support part 42 rotate and fold to facilitate the storage of the telescopic folding bicycle 1000.

[0051] Further reading Figure 3The support rod 40 also includes a screwing part 43. The first support part 41 and the second support part 42 have interlocking parts 44 on their respective sides facing each other. The screwing part 43 passes through the first support part 41 and the second support part 42. When the telescopic folding bicycle 1000 is in the unfolded state, the interlocking parts 44 of the first support part 41 and the second support part 42 engage, and the screwing part 43 fixes the first support part 41 and the second support part 42. When the telescopic folding bicycle 1000 switches from the unfolded state to the folded state, the screwing part 43 is screwed, creating a gap between the first support part 41 and the second support part 42. Operating the first support part 41 and the second support part 42 causes the interlocking parts 44 to separate, and the two parts to rotate relative to each other, thus completing the folding process.

[0052] It should be noted that the screwing part 43 passes through the second support part 42 and is threadedly connected to the first support part 41. When the telescopic bicycle 1000 does not need to be folded, the screwing part 43 is threadedly fixed to the first support part 41; when the telescopic bicycle 1000 needs to be folded, the screwing part 43 is screwed to create a gap between the first support part 41 and the second support part 42, and then an external force is applied to separate the engaging part 44 of the first support part 41 and the second support part 42, so that the first support part 41 and the second support part 42 can be rotated relative to each other to fold the bicycle.

[0053] In some embodiments, see Figure 1 The frame 100 also includes a vertical tube 50 and a rear seat 60. The telescopic folding bicycle 1000 also includes a saddle 800, which is mounted on the vertical tube 50. The rear seat 60 and the rear fork 30 are both connected to the first tube 111. When the telescopic folding bicycle 1000 is in the unfolded state, the vertical tube 50 passes through the first part 12 and the second tube 112 to facilitate the fixation of the first part 12 and the second tube 112. (See reference...) Figure 6 and Figure 7 When the telescopic folding bicycle 1000 is in the folded state, the vertical tube 50 is detached from the second tube body 112 and the first part 12 and installed on the rear seat 60.

[0054] Specifically, the second tube body 112 is provided with an assembly part 1124, and the assembly part 1124 is provided with a third quick-release piece 70. When the vertical tube 50 passes through the assembly part 1124, the third quick-release piece 70 can lock the vertical tube 50. At the same time, the third quick-release piece 70 facilitates the disassembly of the vertical tube 50. More specifically, when the telescopic folding bicycle 1000 is in the folded state, in order to facilitate the placement of the vertical tube 50, the rear seat 60 is provided with a retaining ring 61, and the vertical tube 50 is secured by the retaining ring 61.

[0055] In some embodiments, see Figure 1The frame 100 also includes a seat tube 80, and the telescopic folding bicycle 1000 also includes handlebars 900. The first part 12 includes a first connecting part 121, a first folding mechanism 122, and a second connecting part 123. The first connecting part 121 is sleeved with the second tube body 112, and the second connecting part 123 is connected to the first connecting part 121 via the first folding mechanism 122. Specifically, the second connecting part 123 is hinged to the first connecting part 121 via the first folding mechanism 122. The front fork 20 and the seat tube 80 are both mounted on the second connecting part 123. When the telescopic folding bicycle 1000 is in the folded state, the second connecting part 123 folds with the first connecting part 121 via the second folding mechanism 82. That is, when the telescopic folding bicycle 1000 is folded, the first part 12 itself can fold to further reduce the volume of the telescopic folding bicycle 1000 for easy storage.

[0056] See Figure 2 The riser 80 includes a third connecting part 81, a second folding mechanism 82, and a fourth connecting part 83. The third connecting part 81 is connected to the second connecting part 82, and the fourth connecting part 83 is connected to the third connecting part 81 via the second folding mechanism 82. Specifically, the fourth connecting part 83 is hinged to the third connecting part 81 via the second folding mechanism 82, and the handlebar 900 is mounted on the fourth connecting part 83. When the telescopic folding bicycle 1000 is in the folded state, the fourth connecting part 83 folds with the third connecting part 81 via the second folding mechanism 82, so that the handlebar 900 folds, further reducing the volume of the telescopic folding bicycle 1000 when folded.

[0057] Further reading Figure 5 and Figure 7 When the telescopic folding bicycle 1000 is in the folded state, the front wheel 200 and the rear wheel 300 are coaxially arranged, and the handlebars 900 and the saddle 800 are clamped between the front wheel 200 and the rear wheel 300, making the telescopic folding bicycle 1000 smaller in size when folded.

[0058] In some embodiments, the telescopic folding bicycle 1000 further includes a caster wheel assembly 1100, which is connected to the first portion 12 or the second portion 11. Specifically, the caster wheel assembly 1100 is connected to the mounting portion 1122 and can switch between a fifth position and a sixth position relative to the mounting portion 1122 to either contact the ground to support the telescopic folding bicycle 1000 or to separate it from the ground. Thus, when the telescopic folding bicycle 1000 is in the folded state, operating the caster wheel assembly 1100 to switch from the sixth position to the fifth position allows it to contact the ground, facilitating movement of the telescopic folding bicycle 1000. When the telescopic folding bicycle 1000 is in the unfolded state, operating the caster wheel assembly 1100 to switch from the sixth position to the fifth position does not allow the caster wheel assembly 1100 to contact the ground, thus not interfering with the normal operation of the telescopic folding bicycle 1000.

[0059] The telescopic folding bicycle 1000 provided in this embodiment of the invention can be switched from an unfolded state to a folded state using the following operation method:

[0060] Operate the third quick-release mechanism 70 to remove the vertical tube 50 and the saddle 800. The vertical tube 50 is then secured in the retaining ring 61 on the rear seat 60. Operate the first quick-release mechanism, the second quick-release mechanism, and the screwing part 43 to retract the second tube 112 within the first tube 111, and the first connecting part 121 retracts within the second tube 112. Operate the first folding mechanism 122 and the second folding mechanism 82 to fold the handlebars 900 and the front wheel 200.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A telescopic folding bicycle, the telescopic folding bicycle comprising: A frame (100) includes a main beam tube (10), a front fork (20) and a rear fork (30), characterized in that the main beam tube (10) includes a first part (12) and a second part (11) that are sleeved together, the front fork (20) is connected to the first part (12), the rear fork (30) is connected to the second part (11), the front fork (20) is used to assemble a front wheel (200), and the rear fork (30) is used to assemble a rear wheel (300); the first part (12) includes a first connecting part (121), a first folding device (122) and a second connecting part (123), the first connecting part (121) is sleeved with the second part (11), the second connecting part (123) is connected to the first connecting part (121) through the first folding device (122), and the front fork (20) is connected to the second connecting part (123); The first part (12) is capable of switching between a forward-extended first position and a rearward-retracted second position relative to the second part (11), so that the telescopic folding bicycle can switch between an unfolded state and a folded state. The second part (11) includes a second tube body (112), and the first connecting part (121) is sleeved with the second tube body (112); the second tube body (112) includes a main body (1121) and a mounting part (1122), the main body (1121) is connected to the first part (12), and the mounting part (1122) is connected to the main body (1121) and used to install pedals (500); the frame (100) also includes a support rod (40), the support rod (40) includes a first support part (41) and a second support part (42), the... The first support part (41) is connected to the rear fork (30), and the second support part (42) is connected to the mounting part (1122). The first support part (41) and the second support part (42) are hinged together. When the telescopic folding bicycle is in the unfolded state, the first support part (41) and the second support part (42) are connected and supported between the rear fork (30) and the mounting part (1122). When the telescopic folding bicycle is in the folded state, the first support part (41) and the second support part (42) rotate and fold.

2. The telescopic folding bicycle according to claim 1, characterized in that, The second part (11) includes a first tube (111) and a second tube (112) that are sleeved together, the rear fork (30) is connected to the first tube (111), the first connecting part (121) is sleeved to the second tube (112); the main body (1121) is connected to the first tube (111); The first tube (111) is capable of switching between a third position of rearward extension and a fourth position of forward retraction relative to the second tube (112) so that the telescopic folding bicycle can switch between the unfolded state and the folded state; or the first tube (111) is hinged to the second tube (112) so that the telescopic folding bicycle can switch between the unfolded state and the folded state.

3. The telescopic folding bicycle according to claim 1, characterized in that, The support rod (40) also includes a screwing part (43), and the first support part (41) and the second support part (42) are provided with an engagement part (44) on the side facing each other. The screwing part (43) passes through the first support part (41) and the second support part (42). When the telescopic folding bicycle is in the unfolded state, the first support part (41) and the second support part (42) engage with each other through the engagement part (44), and the screwing part (43) fixes the first support part (41) and the second support part (42); when the telescopic folding bicycle switches from the unfolded state to the folded state, the screwing part (43) is screwed to operate the engagement part (44) of the first support part (41) and the second support part (42) to separate and cause them to rotate relative to each other.

4. The telescopic folding bicycle according to claim 1, characterized in that, The frame (100) also includes a vertical tube (50) and a rear seat (60), the vertical tube (50) being used to mount a saddle (800), and the rear seat (60) and the rear fork (30) being connected to the second part (11); When the telescopic folding bicycle is in the unfolded state, the vertical tube (50) passes through the first part (12) and the second part (11); when the telescopic folding bicycle is in the folded state, the vertical tube (50) is detached from the first part (12) and the second part (11) and installed on the rear seat (60).

5. The telescopic folding bicycle according to claim 1, characterized in that, The frame (100) also includes a riser (80) for mounting the handlebars (900), which is mounted on the second connecting part (123).

6. The telescopic folding bicycle according to claim 5, characterized in that, The riser (80) includes a third connecting part (81), a second folding device (82) and a fourth connecting part (83). The third connecting part (81) is connected to the second connecting part (123), and the fourth connecting part (83) is connected to the third connecting part (81) through the second folding device (82) and is used to install the handlebar (900). When the telescopic folding bicycle is in the folded state, the fourth connecting part (83) is folded with the third connecting part (81) through the second folder (82).

7. The telescopic folding bicycle according to claim 5, characterized in that, The telescopic folding bicycle also includes a front wheel (200) and a rear wheel (300), the front wheel (200) being mounted on the front fork (20) and the rear wheel (300) being mounted on the rear fork (30); When the telescopic folding bicycle is in the folded state, the front wheel (200) and the rear wheel (300) are coaxially arranged, and the handlebar (900) is clamped between the front wheel (200) and the rear wheel (300).

8. The telescopic folding bicycle according to claim 1, characterized in that, The telescopic folding bicycle also includes a first quick-release component, which is installed on the outer side of the first part (12) and the second part (11), and is used to lock or unlock the connection between the first part (12) and the second part (11).

9. The telescopic folding bicycle according to claim 1, characterized in that, The telescopic folding bicycle also includes a caster assembly (1100) connected to the first part (12) or the second part (11) and movable relative to the frame (100) to switch between a fifth position and a sixth position, so as to be able to contact the ground to support the telescopic folding bicycle or to separate from the ground.

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