Telescopic rod structure and bicycle

Abstract

The utility model provides a telescopic rod structure and a bicycle. The telescopic rod structure comprises a lower pipe, an upper pipe, a clamping part, a control module, a shock-proof axis and a shock-proof body. The upper pipe is inserted into the lower pipe from the first end of the lower pipe and moves relative to the lower pipe, and a containing space is defined by the upper pipe and the lower pipe. The clamping part is positioned in the accommodating space and is linked with the upper pipe; the control module is located in the containing space and comprises an abutting piece, and the abutting piece is selectively clamped with different clamping parts so as to change the height of the upper pipe relative to the lower pipe. One end of the shock-proof axis is connected with the control module and extends towards the second end of the lower pipe along the axis. The shock absorption body is located between the control module and the second end of the lower pipe. When at least one of the upper pipe and the lower pipe is affected by external force, the upper pipe, the control module and the shock-proof axis move relative to the lower pipe along the axis, and the shock-proof body is compressed for shock absorption. Therefore, the anti-vibration device has the anti-vibration capability.

Description

Technical Field

[0001] The utility model relates to a telescopic rod structure and a bicycle, and in particular to a height-adjustable telescopic rod structure and a bicycle. Background Art

[0002] Generally speaking, a bicycle is equipped with a telescopic rod to adjust the height of, for example, a seat cushion or handlebars. Existing telescopic rods may include an upper tube and a lower tube, and the length of the telescopic rod can be changed by adjusting the distance between the upper tube and the lower tube. Existing telescopic rods may include a fluid-type height adjustment mechanism, which may include a tube body, wherein the tube body contains a fluid such as air, oil, or both oil and gas, and a piston and a valve are provided to change the relative position of the piston in the tube body, thereby changing the relative height of the upper tube and the lower tube. When the user wants to lower the height of the telescopic rod, the valve is opened and force is applied to press down on the upper tube to lower the upper tube relative to the lower tube; conversely, when the user wants to raise the height of the telescopic rod, the valve is opened to allow the upper tube to rise relative to the lower tube, and then the user limits the upper tube with hands or body parts to raise the upper tube to a predetermined height.

[0003] However, this type of fluid-based height adjustment mechanism is relatively expensive. To reduce costs, some industry players have developed mechanical height adjustment mechanisms. However, these mechanical height adjustment mechanisms lack compressible gas, resulting in poor shock absorption. Therefore, improving the telescopic rod structure with this mechanical height adjustment mechanism to provide shock absorption has become a goal for relevant industry players. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a telescopic rod structure and a bicycle, which can have shock-absorbing capabilities through structural configuration.

[0005] According to one embodiment of the present invention, a telescopic rod structure is provided, comprising a lower tube, an upper tube, at least two engaging portions, a control module, a shock-absorbing shaft, and a shock-absorbing body. The lower tube comprises opposite first and second ends. The upper tube is inserted into the lower tube from the first end thereof and is adapted to move relative to the lower tube. The upper tube and the lower tube define a housing space. The engaging portion is located within the housing space and interlocks with the upper tube, the engaging portions being arranged along the axis of the upper tube. The control module is located within the housing space and comprises a stopper that selectively engages with different engaging portions to adjust the height of the upper tube relative to the lower tube. One end of the shock-absorbing shaft is connected to the control module and extends along the axis toward the second end of the lower tube. The shock-absorbing body is located between the control module and the second end of the lower tube. When the stopper engages with one of the engaging portions, the upper tube is restrained by the control module. When at least one of the upper tube and the lower tube is subjected to external force, the upper tube, the control module, and the shock-absorbing shaft move along the axis relative to the lower tube, compressing the shock-absorbing body to provide shock absorption.

[0006] In this way, by engaging the control module with the upper tube at different positions, especially by adjusting the engagement relationship and engagement position between the push-up member and the engagement portion, the height of the upper tube relative to the lower tube can be adjusted, and the structural configuration of the upper tube, the control module and the shock absorber axis can be moved relative to the lower tube to compress the shock absorber, so that a shock-absorbing effect can be achieved through the shock absorber when vibration occurs.

[0007] The telescopic rod structure according to the aforementioned embodiment may further include a shock-absorbing bottom plug connected to the other end of the shock-absorbing axis, wherein the shock-absorbing body is located between the shock-absorbing bottom plug and the second end of the lower tube.

[0008] According to the telescopic rod structure of the aforementioned embodiment, a shock-absorbing area can be formed between the shock-absorbing bottom plug and the second end of the lower tube. The size of the shock-absorbing area can be adjusted to change the preload of the shock-absorbing body.

[0009] The telescopic rod structure according to the aforementioned embodiment may further include a liner and a return spring. The liner is sleeved around the shock absorber axis and includes an upper flange, which is adjacent to the control module. The return spring is sleeved around the liner and abuts between the upper flange and the shock absorber bottom plug.

[0010] The telescopic rod structure according to the aforementioned embodiment may further include a shock-absorbing tube, which is located between the control module and the second end of the lower tube, and the other end of the shock-absorbing axis is displaceably inserted into the shock-absorbing tube.

[0011] According to the telescopic rod structure of the aforementioned embodiment, it may further include a locking tube, the locking portion is recessed in the inner circumferential surface of the locking tube, the locking tube includes a locking tail plug, the locking tail plug is locked in the tail end of the locking tube, and the control module further includes a valve tube for limiting the top member, the valve tube is connected to one end of the shock absorber axis, the shock absorber body is sleeved on the shock absorber axis and presses between the valve tube and the locking tail plug.

[0012] The telescopic rod structure according to the aforementioned embodiment may further include a liner and a return spring. The liner is sleeved outside the shock-absorbing tube and includes an upper flange that abuts against the locking tail plug. The return spring is sleeved outside the liner and located between the upper flange and the second end of the lower tube.

[0013] According to the telescopic rod structure of the aforementioned embodiment, the shock-absorbing axis includes a first section and a second section, the first section is connected to the valve tube, the second section is connected to the first section, the first diameter of the first section is larger than the second diameter of the second section, and the second section is used to insert the shock-absorbing tube.

[0014] The telescopic rod structure according to the aforementioned embodiment may further include a shock absorber tube and a return spring. The shock absorber tube is located below the shock absorber axis and is displaceably inserted into the shock absorber axis. The return spring is sleeved around the shock absorber tube and the shock absorber axis and is located between the control module and the second end of the lower tube. The shock absorber axis includes a first section and a second section, the first section being connected to the control module, and the second section being connected to the first section. The first diameter of the first section is greater than the second diameter of the second section to form a top contact surface. The shock absorber body is sleeved around the shock absorber tube and is located between the top contact surface and the second end of the lower tube.

[0015] According to another embodiment of the present invention, a bicycle is provided, comprising a frame and two wheels. The frame comprises a telescopic rod structure, which comprises a lower tube, an upper tube, a control module, a shock absorber axis, and a shock absorber body. The lower tube comprises a first end and a second end, which are opposite to each other. The upper tube is inserted into the lower tube from the first end of the lower tube and is configured to move relative to the lower tube, with the upper tube and the lower tube defining a housing space. The control module is located in the housing space and is selectively positioned at different positions on the upper tube to change the height of the upper tube relative to the lower tube. One end of the shock absorber axis is connected to the control module and extends along the axis of the upper tube toward the second end of the lower tube. The shock absorber body is located between the control module and the second end of the lower tube. The two wheels are mounted on the frame. When the control module is positioned on the upper tube, if at least one of the upper tube and the lower tube is affected by an external force, the upper tube, the control module, and the shock absorber axis move along the axis relative to the lower tube, compressing the shock absorber body to provide shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram of a telescopic rod structure according to a first embodiment of the present invention is shown;

[0017] Figure 2 Draw Figure 1 An exploded schematic diagram of the telescopic rod structure of the first embodiment;

[0018] Figure 3 Draw Figure 1 A schematic cross-sectional view of the telescopic rod structure of the first embodiment;

[0019] Figure 4 Draw Figure 1 A partially enlarged cross-sectional schematic diagram of the telescopic rod structure of the first embodiment;

[0020] Figure 5 Draw Figure 1 Another schematic cross-sectional view of the telescopic rod structure of the first embodiment;

[0021] Figure 6 Draw Figure 1 Another schematic cross-sectional view of the telescopic rod structure of the first embodiment;

[0022] Figure 7FIG2 is an exploded view of a telescopic rod structure according to a second embodiment of the present invention;

[0023] Figure 8 Draw Figure 7 A schematic cross-sectional view of the telescopic rod structure of the second embodiment;

[0024] Figure 9 FIG2 is an exploded view of a telescopic rod structure according to a third embodiment of the present invention;

[0025] Figure 10 Draw Figure 9 A schematic cross-sectional view of the telescopic rod structure of the third embodiment;

[0026] Figure 11 A perspective view of a bicycle according to a fourth embodiment of the present invention is shown;

[0027] Figure 12 A perspective schematic diagram of a telescopic rod structure connected to a vertical rod according to a fifth embodiment of the present invention is shown;

[0028] Figure 13 Draw Figure 12 A partial cross-sectional view of the telescopic rod structure connected to the vertical rod of the fifth embodiment; and

[0029] Figure 14 A perspective schematic diagram of a bicycle according to a sixth embodiment of the present invention is shown. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention with reference to the accompanying drawings. For clarity, many practical details will be included in the following description. However, the reader should understand that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some conventional structures and components are depicted in a simplified schematic manner; and repeated components may be represented using the same or similar numbers.

[0031] Furthermore, terms such as "first," "second," and "third" are used herein to describe different elements or components and do not limit the elements / components themselves. Therefore, a "first element / component" could also be referred to as a "second element / component." Furthermore, the combinations of elements / components / mechanisms / modules described herein are not generally known, conventional, or existing in the art. Whether a combination of elements / components / mechanisms / modules is easily accomplished by a person skilled in the art cannot be determined based on the existing nature of the elements / components / mechanisms / modules themselves.

[0032] See also Figure 1 and Figure 2 ,in Figure 1FIG. 1 is a perspective diagram of a telescopic rod structure 100 according to a first embodiment of the present invention. Figure 2 Draw Figure 1 An exploded schematic diagram of the telescopic rod structure 100 of the first embodiment. The telescopic rod structure 100 includes a lower tube 110, an upper tube 120, a control module 150, a shock-absorbing axis 161, and a shock-absorbing body 170. The lower tube 110 includes a first end 111 and a second end 112 opposite to each other. The upper tube 120 is inserted into the interior of the lower tube 110 from the first end 111 of the lower tube 110 and is used to move relative to the lower tube 110. The upper tube 120 and the lower tube 110 define a receiving space. The control module 150 is located in the receiving space, and the control module 150 is selectively limited to different positions of the upper tube 120 to change the height of the upper tube 120 relative to the lower tube 110. One end of the shock-absorbing axis 161 is connected to the control module 150 and is arranged along the axis X1 (marked at Figure 3 ) extends toward the second end 112 of the lower tube 110. The shock absorber 170 is located between the control module 150 and the second end 112 of the lower tube 110. When the control module 150 is restrained on the upper tube 120, if at least one of the upper tube 120 or the lower tube 110 is affected by an external force, the upper tube 120, the control module 150, and the shock absorber axis 161 move relative to the lower tube 110 along the axis X1 of the upper tube 120, compressing the shock absorber 170 to provide shock absorption.

[0033] Thus, by engaging the control module 150 with the upper tube 120 at different positions, the height of the upper tube 120 relative to the lower tube 110 can be adjusted. Furthermore, the upper tube 120, the control module 150, and the shock-absorbing shaft 161 can move relative to the lower tube 110 to compress the shock-absorbing body 170. This allows the shock-absorbing body 170 to provide a shock-absorbing effect when vibration occurs. Details of the telescopic rod structure 100 will be described later.

[0034] See also Figure 3 and Figure 4 , and see also Figure 2 ,in Figure 3 Draw Figure 1 A cross-sectional view of the telescopic rod structure 100 of the first embodiment, Figure 4 Draw Figure 1 A partially enlarged cross-sectional view of the telescopic rod structure 100 of the first embodiment. Both the lower tube 110 and the upper tube 120 are hollow tubular structures. The upper tube 120, located at one end away from the lower tube 110, can be equipped with a connecting assembly for attaching to a bicycle seat cushion. The lower tube 110 may also include an oil seal and a lower tube plug 113. The oil seal 114 fits over the outer side of the first end 111, and the lower tube plug 113 is connected to the second end 112 of the lower tube 110.

[0035] The telescopic rod structure 100 may include at least two engaging portions 141 located within the receiving space and interlocked with the upper tube 120. These engaging portions 141 are arranged along the axis X1. Specifically, the telescopic rod structure 100 may include an engaging tube 140. In addition to the engaging portions 141, the engaging tube 140 may also include an engaging tube body 143 and an engaging tail plug 142. The engaging tube body 143 may be made of metal, with the engaging portions 141 recessed within its inner circumference. One end of the engaging tube body 143 (equivalent to the top end of the engaging tube 140) is lockable to the end of the upper tube 120 adjacent to the connecting element, while the engaging tail plug 142 is lockable to the other end of the engaging tube body 143 (equivalent to the tail end of the engaging tube 140) distal to the connecting element.

[0036] The control module 150 can be located in the accommodating space and include a stopper 152. The stopper 152 can selectively engage with different ones of the engaging portions 141 to adjust the height of the upper tube 120 relative to the lower tube 110. When the stopper 152 engages with one of the engaging portions 141, the upper tube 120 can be restrained within the control module 150. This allows the height of the upper tube 120 to be adjusted based on the engagement relationship and engagement position of the stopper 152 and the engaging portion 141. Specifically, the control module 150 can further include a valve tube 151. The valve tube 151 is located within the engaging tube 140 and serves to limit the stopper 152. The valve tube 151 can be connected to one end of the shock absorber shaft 161. The valve tube 151 may include a valve tube body 1512 and four receiving holes 1511. The four receiving holes 1511 radially extend through the valve tube body 1512 to communicate with the interior of the valve tube body 1512. The four receiving holes 1511 are spaced apart around the axis X1 and accommodate four abutting members 152, thereby limiting the position of the abutting members 152. One end of the valve tube body 1512 may protrude from the engaging tail plug 142 when the valve tube body 1512 is moved to the lowest position of the engaging tube 140. Furthermore, the control module 150 may further include a valve tube bushing 155 and an elastic ring 156. The valve tube body 1512 may have a partially reduced diameter to form a stepped surface. The elastic ring 156 is fitted over the reduced diameter portion of the valve tube body 1512 and can abut between the engaging tail plug 142 and the stepped surface when the valve tube body 1512 is moved to the lowest position of the engaging tube 140. The valve tube bushing 155 can be sleeved into the bushing groove on the outer wall of the valve tube body 1512 .

[0037] The control module 150 may further include a control valve 153 and a control spring 154. The control valve 153 is hollow, with an annular groove 1531 recessed on its outer wall to accommodate the four receiving holes 1511. The control spring 154 is positioned within the valve tube 151 and sleeved over the radially tapered end of the control valve 153. The abutment 152 may have a bead structure, but is not limited thereto.

[0038] like Figure 2 and Figure 3As shown, the telescopic rod structure 100 may include a shock-absorbing shaft assembly 160. In addition to a shock-absorbing shaft 161, the shock-absorbing shaft assembly 160 may also include a shock-absorbing bottom plug 162. The shock-absorbing bottom plug 162 is connected to the other end of the shock-absorbing shaft 161. Specifically, the shock-absorbing shaft 161 is a rod-shaped structure with threads at both ends. Therefore, one end of the shock-absorbing shaft 161 can be locked to the valve tube 151 of the control module 150, and the other end can be locked to the shock-absorbing bottom plug 162.

[0039] The shock absorber 170 can be positioned between the lower surface of the shock absorber bottom plug 162 and the lower tube end plug 113. Furthermore, a shock absorber zone can be formed between the shock absorber bottom plug 162 and the second end 112 of the lower tube 110. The size of the shock absorber zone can be adjusted to change the preload of the shock absorber 170. In the first embodiment, the preload of the shock absorber 170 can be adjusted by changing the position of the lower tube end plug 113. For example, when the lower tube end plug 113 is facing upward, the shock absorber zone is reduced, the preload is high, and the damping is firmer; conversely, when the lower tube end plug 113 is facing downward, the shock absorber zone is increased, the preload is low, and the damping is softer. In other embodiments, the size of the shock absorber zone can be adjusted using other methods, not limited to the above. The shock absorber 170 can be elastic and, in the first embodiment, be a cylindrical spring. In other embodiments, it can be made of, for example, a foam material structure or a rubber material structure, without limitation.

[0040] In the first embodiment, the telescopic rod structure 100 may further include a liner 190 and a return spring 180. The liner 190 is sleeved around the shock absorber shaft 161 and includes an upper flange 191, which is adjacent to the control module 150. The return spring 180 is sleeved around the liner 190 and abuts between the upper flange 191 and the shock absorber bottom plug 162. Specifically, the liner 190 is connected to the bottom of the locking tail plug 142 via the upper flange 191 and is located between the locking tail plug 142 and the shock absorber bottom plug 162. The placement of the liner 190 within the return spring 180 helps prevent buckling of the return spring 180 when compressed.

[0041] Furthermore, the telescopic rod structure 100 may further include a cable 130 , which is positioned within the control valve 153 and can pass through the shock absorber shaft 161 , the shock absorber bottom plug 162 , and the lower tube tail plug 113 to connect to an external operating unit. Therefore, when the cable 130 is pulled, the control valve 153 can be controlled.

[0042] See also Figure 5 , and see also Figures 2 to 4 ,in Figure 5 Draw Figure 1 Another cross-sectional view of the telescopic rod structure 100 of the first embodiment. Figure 3 As shown, the push member 152 is located in the receiving hole 1511 and is engaged with the engaging portion 141 below. Figure 4As shown, when the line body 130 is pulled downward, the control valve 153 moves downward, causing the push member 152 to enter the annular groove 1531 and move away from the lower engaging portion 141. In this way, the engaging tube body 143 is not restricted, and the upper tube 120 is also not restricted and can move relative to the lower tube 110. Figure 5 As shown, when the upper tube 120 is lowered relative to the lower tube 110 so that the upper engaging portion 141 and the resisting member 152 are aligned, the resisting member 152 can be engaged with the upper engaging portion 141 to position the upper tube 120. At this time, the engaging tail plug 142 can compress the return spring 180. In this way, the relative height between the upper tube 120 and the lower tube 110 can be adjusted. Figure 5 In this state, if the wire body 130 is pulled again to disengage the push member 152 from the upper engaging portion 141, the restoring force of the return spring 180 can push the upper tube 120 upward, so that the push member 152 is aligned with the lower engaging portion 141 again.

[0043] See also Figure 6 , and see also Figure 3 ,in Figure 6 Draw Figure 1 Another cross-sectional view of the telescopic rod structure 100 of the first embodiment. Figure 3 and Figure 6 As shown, when an external force is generated, the upper tube 120 can link the control module 150 and the shock absorber shaft assembly 160 to move downward, so that the shock absorber bottom plug 162 will press against and compress the shock absorber body 170, thereby achieving a shock-absorbing effect.

[0044] See also Figure 7 and Figure 8 ,in Figure 7 FIG2 shows an exploded view of a telescopic rod structure 200 according to a second embodiment of the present invention. Figure 8 Draw Figure 7 A cross-sectional view of a telescopic rod structure 200 according to a second embodiment. The telescopic rod structure 200 is similar to the telescopic rod structure 100 according to the first embodiment, and only the differences are described below, while the similarities are not repeated.

[0045] The shock-absorbing shaft assembly 260 of the telescopic rod structure 200 includes a shock-absorbing shaft core 261 and a shock-absorbing tube 263 . The shock-absorbing tube 263 is located between the control module and the second end of the lower tube 210 , particularly below the shock-absorbing shaft core 261 and for the shock-absorbing shaft core 261 to be movably inserted.

[0046] Specifically, the shock absorber axis 261 may include a first section 2611 and a second section 2612. The first section 2611 is connected to the valve tube 251 of the control module, and the second section 2612 is connected to the first section 2611. The first diameter of the first section 2611 is greater than the second diameter of the second section 2612 to form a top surface 2613.

[0047] The shock absorber tube 263 may include a screw ring 2631 and a shock absorber tube body 2632. The shock absorber tube body 2632 is screwed onto the screw ring 2631, and the opening of the screw ring 2631 is smaller than the opening of the shock absorber tube body 2632. The second section 2612 may include a radially expanded stopper. During manufacturing, the second section 2612 may be first inserted into the screw ring 2631, and then the stopper may be formed by riveting, for example. Alternatively, a separate stopper may be connected, and the two ends of the shock absorber tube body 2632 may be locked to the screw ring 2631 and the lower tube end plug 213, respectively. In this way, the shock absorber shaft 261 can move within the shock absorber tube body 2632.

[0048] The return spring 280 can be mounted on the outside of the shock absorber tube 263 and the shock absorber shaft 261, and positioned between the control module and the second end of the lower tube 210, specifically abutting between the locking plug 242 and the lower tube plug 213 of the lower tube 210. The shock absorber body 270 can be mounted on the outside of the shock absorber tube 263 and positioned between the top surface 2613 and the second end of the lower tube 210, specifically abutting between the top surface 2613 and the lower tube plug 213. In this way, when an external force is generated, the shock absorber shaft 261 can move within the shock absorber tube 263, causing the top surface 2613 to compress the shock absorber body 270, thereby achieving a shock-absorbing effect.

[0049] See also Figure 9 and Figure 10 ,in Figure 9 FIG. 1 is an exploded view of a telescopic rod structure 300 according to a third embodiment of the present invention. Figure 10 Draw Figure 9 A cross-sectional view of a telescopic rod structure 300 according to a third embodiment is shown. The telescopic rod structure 300 is similar to the telescopic rod structure 100 according to the first embodiment, and only the differences are described below, while the similarities are not repeated.

[0050] The telescopic rod structure 300 may include a shock-absorbing tube 363, located between the control module and the second end of the lower tube 310. The valve tube 351 of the control module is connected to one end of the shock-absorbing shaft 361, and the other end of the shock-absorbing shaft 361 is displaceably inserted into the shock-absorbing tube 363. Specifically, the structure of the shock-absorbing shaft 361 may be similar to the shock-absorbing shaft 261 of the second embodiment, including a first section 3611 and a second section 3612. The second section 3612 is inserted into the shock-absorbing tube 363, and the details are not further described.

[0051] like Figure 9 and Figure 10As shown, the telescopic rod structure 300 may include a bushing 390, a return spring 380, and a shock absorber 370. The bushing 390 is sleeved over the shock absorber tube 363 and includes an upper flange 391 that abuts the locking plug 342. The return spring 380 is sleeved over the bushing 390 and positioned between the upper flange 391 and the second end of the lower tube 310, specifically abutting between the upper flange 391 and the lower tube plug 313. The shock absorber 370 is sleeved over the shock absorber shaft 361 and abuts between the valve tube 351 and the locking plug 342. Specifically, in the third embodiment, the bushing 390 directly abuts the locking plug 342, while the first section 3611 of the shock absorber shaft 361 is positioned within the locking tube 340. This allows the shock absorber 370 to also be positioned within the locking tube 340. Since the second section 3612 of the shock-absorbing shaft 361 protrudes from the engaging tail plug 342 and can move in the shock-absorbing tube 363 , when an external force is generated, the valve tube 351 will directly compress the shock-absorbing body 370 to achieve a shock-absorbing effect.

[0052] See also Figure 11 ,in Figure 11 A perspective schematic diagram of a bicycle 400 according to a fourth embodiment of the present invention is shown. Bicycle 400 includes a frame 410, a seat 420, and two wheels 430. Frame 410 includes a telescopic rod structure 411. The seat 420 is mounted on the top tube, and the wheels 430 are mounted on the frame 410. Telescopic rod structure 411 may be the telescopic rod structures 100, 200, and 300 of the first to third embodiments, and details are omitted here.

[0053] See also Figure 12 and Figure 13 ,in Figure 12 FIG. 1 is a perspective diagram showing a telescopic rod structure 500 connected to a vertical rod B1 according to a fifth embodiment of the present invention. Figure 13 Draw Figure 12 A partial cross-sectional view of a telescopic rod structure 500 of the fifth embodiment connected to a vertical rod B1. The telescopic rod structure 500 may include an upper tube 520 and a lower tube 510. The lower tube 510 is insertable into the bicycle's head tube, while the upper tube 520 is removably connected to the vertical rod B1. The remaining structure of the telescopic rod structure 500 is similar to the telescopic rod structures 100, 200, and 300 of the first to third embodiments, and the details are not repeated here.

[0054] See also Figure 14 ,in Figure 14A perspective schematic diagram of a bicycle 600 according to a sixth embodiment of the present invention is shown. Bicycle 600 includes a frame 610, handlebars 640, and a vertical bar 650. Frame 610 includes a telescopic rod structure 611, which is inserted into the head tube of frame 610 and connected to vertical bar 650. Handlebars 640 can be inserted through vertical bar 650, thereby providing shock absorption for the bicycle's head tube. Other details similar to those of the previous embodiment are not repeated here.

[0055] As can be seen from the above embodiments, the structure in which the upper tube, control module, and shock absorber axis can be moved relative to the lower tube allows the shock absorber to be compressed, thereby achieving a vibration-absorbing effect. Furthermore, the size of the shock absorber's shock absorption area can be adjusted, further achieving a damping effect of adjusting the firmness or softness.

[0056] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0057]

Explanation of symbols

[0058] 100,200,300,411,500,611: telescopic rod structure

[0059] 110, 210, 310, 510: Down tube

[0060] 111: First End

[0061] 112: Second end

[0062] 113,213,313: Lower pipe tail plug

[0063] 120,520:top tube

[0064] 130: Line

[0065] 140,340: snap-on tube

[0066] 141: snap fit

[0067] 142,242,342: snap-on tail plug

[0068] 143: snap-fit ​​tube

[0069] 150: Control Module

[0070] 151,251,351: valve tube

[0071] 1511: Accommodation hole

[0072] 1512: Valve tube body

[0073] 152: Retaining piece

[0074] 153: Control valve

[0075] 1531: Ring groove

[0076] 154: Control spring

[0077] 155: Valve pipe bushing

[0078] 156: Elastic ring

[0079] 160,260: shock absorber shaft group

[0080] 161,261,361: shock absorber axis

[0081] 162: shock absorber bottom plug

[0082] 170,270,370: shock absorber

[0083] 180,280,380:Return spring

[0084] 190,390: Liner

[0085] 191,391: Upper flange

[0086] 2611,3611: first paragraph

[0087] 2612,3612: Second paragraph

[0088] 2613: Top surface

[0089] 263,363: shock absorber tube

[0090] 2631:Screw ring

[0091] 2632: shock absorber tube

[0092] 400,600:Bicycle

[0093] 410,610: Frame

[0094] 420: Seat cushion

[0095] 430:Wheel

[0096] 640:Handle

[0097] 650,B1: vertical bar

[0098] X1: axis.

Claims

1. A telescopic rod structure, characterized in that: Include: a lower tube comprising opposite first and second ends; an upper tube, inserted into the lower tube from the first end thereof and adapted to move relative to the lower tube, wherein the upper tube and the lower tube define an accommodating space; At least two engaging portions are located in the accommodating space and are linked to the upper tube, and the at least two engaging portions are arranged along the axis of the upper tube; a control module located in the accommodating space and comprising a resisting member, wherein the resisting member can selectively engage with different ones of the at least two engaging portions to change the height of the upper tube relative to the lower tube; a shock-absorbing axis, one end of which is connected to the control module and extends along the axis toward the second end of the lower tube; and a shock-absorbing body, located between the control module and the second end of the lower tube; When the push member is engaged with the engaging portion, the upper tube is limited to the control module. When at least one of the upper tube and the lower tube is affected by external force, the upper tube, the control module and the shock absorber axis move along the axis relative to the lower tube, compressing the shock absorber to perform shock absorption.

2. The telescopic rod structure according to claim 1, characterized in that: Also includes: A shock absorber bottom plug is connected to the other end of the shock absorber axis; The shock-absorbing body is located between the shock-absorbing bottom plug and the second end of the lower tube.

3. The telescopic rod structure according to claim 2, characterized in that: A shock-absorbing area is formed between the shock-absorbing bottom plug and the second end of the lower tube. The size of the shock-absorbing area is used to be adjusted to change the preload of the shock-absorbing body.

4. The telescopic rod structure according to claim 2, characterized in that: Also includes: a liner, sleeved on the shock-absorbing shaft and comprising an upper flange, wherein the upper flange is adjacent to the control module; and A return spring is sleeved on the outside of the liner and abuts between the upper flange and the shock-absorbing bottom plug.

5. The telescopic rod structure according to claim 1, characterized in that: It also includes a shock-absorbing tube, which is located between the control module and the second end of the lower tube. The other end of the shock-absorbing axis is displaceably inserted into the shock-absorbing tube.

6. The telescopic rod structure according to claim 5, characterized in that: It also includes a locking tube, the at least two locking parts are recessed in the inner circumference of the locking tube, the locking tube includes a locking tail plug, and the locking tail plug is locked at the tail end of the locking tube. The control module also includes a valve tube for limiting the push-up member, the valve tube is connected to the one end of the shock absorber axis, and the shock absorber body is sleeved on the shock absorber axis and pushes against the valve tube and the locking tail plug.

7. The telescopic rod structure according to claim 6, characterized in that: Also includes: a liner, sleeved on the shock-absorbing tube, the liner comprising an upper flange abutting against the locking tail plug; and The return spring is sleeved on the outside of the liner and is located between the upper flange and the second end of the lower tube.

8. The telescopic rod structure according to claim 7, characterized in that: The shock absorber axis includes a first section and a second section. The first section is connected to the valve tube, and the second section is connected to the first section. The first diameter of the first section is greater than the second diameter of the second section, and the second section is used to insert the shock absorber tube.

9. The telescopic rod structure according to claim 1, characterized in that: Also includes: a shock-absorbing tube, located below the shock-absorbing axis and for the shock-absorbing axis to be displaceably inserted; and A return spring, sleeved on the shock-absorbing tube and the shock-absorbing axis and located between the control module and the second end of the lower tube; The shock absorber axis includes a first section and a second section, the first section is connected to the control module, and the second section is connected to the first section. The first diameter of the first section is greater than the second diameter of the second section to form a top contact surface. The shock absorber body is sleeved outside the shock absorber tube and is located between the top contact surface and the second end of the lower tube.

10. A bicycle, characterized in that: Include: The frame includes a telescopic rod structure, which includes: a lower tube comprising opposite first and second ends; an upper tube, inserted into the lower tube from the first end thereof and adapted to move relative to the lower tube, wherein the upper tube and the lower tube define an accommodating space; A control module is located in the accommodating space, and the control module is selectively limited to different positions of the upper tube to change the height of the upper tube relative to the lower tube; a shock-absorbing axis, one end of which is connected to the control module and extends along the axis of the upper tube toward the second end of the lower tube; and a shock absorber located between the control module and the second end of the down tube; and two wheels, mounted on the frame; In which, when the control module is limited to the upper tube, when at least one of the upper tube and the lower tube is affected by external force, the upper tube, the control module and the shock absorber axis move along the axis relative to the lower tube, compressing the shock absorber to perform shock absorption.

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