Bicycle seat tube assembly

Abstract

The invention provides a bicycle seat tube assembly. The bicycle seat tube assembly comprises an outer tube, an inner tube, a lifting assembly and a control assembly. The inner tube is movably disposed within the outer tube. The lifting assembly is assembled in the inner pipe, the lifting assembly is provided with a valve body and a valve piece, and the valve piece is used for controlling opening and closing of the valve body. The control assembly is assembled on the outer pipe and is provided with a cable, a mounting seat, a pull handle and a push handle, the inner side of the mounting seat is provided with two opposite inner walls, the two inner walls are respectively provided with an inclined orientation groove, the pull handle is pivoted on the mounting seat through a rotating shaft, one end of the pull handle is connected to one end of the cable, the other end of the pull handle abuts against the push handle, and the cable is connected with the cable. And the two positioning parts of the push handle are respectively arranged in the orientation grooves of the mounting seat. Therefore, the push handle slides up and down along the directional groove, and the valve body is controlled to be opened and closed by pushing and abutting against the valve piece of the lifting assembly.

Description

Technical Field

[0001] This disclosure relates to the field of bicycle technology, and more particularly to a bicycle seatpost assembly, which, through a special structural design, allows the seatpost lifting adjustment valve to be opened or closed more smoothly, thereby improving the ease of operation. Background Technology

[0002] To adjust the height of bicycle saddles, adjustable seatposts have been developed. Currently, the simplest method is to use a quick-release mechanism to secure the seatpost. When height adjustment is needed, the quick-release handle is released, allowing the inner tube of the seatpost to be pulled up or down, thus changing the seatpost's height. Alternatively, a cable-operated or electronic control device can be used to control the seatpost's pneumatic or hydraulic valve. When the valve is open, downward pressure is applied to the saddle to lower the seatpost, or the seatpost automatically returns to its original height.

[0003] Patent publication M619009 discloses a pneumatic height adjustment structure for a bicycle seatpost. Pulling the cable causes an upward displacement of the linkage assembly, pushing the actuating end of the top shaft. This causes the pushing end of the top shaft to push the valve rod upward, thus opening the valve and adjusting the height of the seatpost. Patent publication I638740 discloses a bicycle seatpost lifting device. By moving a control lever on the bicycle handlebars, a pusher block pushes an eccentric plate to create a displacement. The actuating end of the pusher pin compresses the spring, causing the valve plate to move away from the valve opening, thereby adjusting the seat height.

[0004] These patents describe designs that use ropes to pull linkage mechanisms. When the linkage is activated, it first deflects outward and then moves upward, forming an arc-shaped action path. Because the valve stem continuously abuts against the linkage, interference, or jamming, occurs when the linkage deflects outward. This means that the force pulling the rope cannot be linearly transmitted to the valve stem. Therefore, during operation, the rider needs to pull the rope with considerable force to compensate for the outward deflection of the linkage. However, this method easily causes wear on the rope and linkage, requiring even greater force to activate the linkage in the future. Therefore, the inventors considered how to provide a control mechanism that avoids interference and achieves linear force transmission. Summary of the Invention

[0005] Given the numerous drawbacks of existing bicycle seatposts, the main objective of this disclosure is to provide a bicycle seatpost assembly that allows the control mechanism to transmit power linearly, facilitating rider adjustment of saddle height.

[0006] To achieve the aforementioned main objectives, this disclosure provides a bicycle seatpost assembly, comprising an outer tube, an inner tube, a lifting assembly, and a control assembly. The inner tube is vertically movable within the outer tube. The lifting assembly, assembled within the inner tube, has a valve body and a valve element, the valve element being used to control the opening and closing of the valve body. The control assembly, assembled within the outer tube, has a cable, a mounting base, a pull handle, and a push handle. The inner side of the mounting base has two opposing inner walls, each with an oblique directional groove. The head end of the directional groove forms an angle greater than 90° with the bottom side of the mounting base. The pull handle is pivotally mounted on the mounting base via a rotating shaft, with one end of the pull handle connected to one end of the cable, and the other end abutting against the push handle. Two positioning parts of the push handle are respectively disposed in the directional grooves of the mounting base, allowing the push handle to slide upward along the head end of the directional groove at an angle greater than 90°, so that the top surface of the push handle pushes against the valve element of the lifting assembly.

[0007] Through the above technical features, the rider can easily control the opening or closing of the valve body of the lifting component during actual operation. Since the control component is equipped with a directional groove, and the directional groove is set at an angle on the mounting base, this inclined design corresponds to the action path of the pull handle driving the push handle, so that the outward deflection arc amplitude generated by the pull handle abutting the end of the push handle is corrected into a straight displacement. This directional groove design can avoid interference in the action path of the control component.

[0008] Preferably, the pull handle of the control component has a groove, and the push handle has a protrusion. The pull handle receives the protrusion through the groove to abut against the push handle. In this way, the groove of the pull handle can help to fix the push handle, prevent the push handle from shifting, and also allow the force of the pull handle to be more completely transmitted to the push handle when it is in motion.

[0009] Preferably, the included angle is greater than 90°, and can be up to 105°. Thus, the included angle is in the range of 90° to 105°, and at least greater than 90°. If the included angle is greater than 105°, it will be more difficult to apply force, while if it is less than 95°, there will still be interference problems.

[0010] Preferably, the included angle gradually decreases from the beginning to the end of the directional groove. In this way, as the tilt angle decreases, the final segment of the push handle's movement path gradually becomes vertically upward and pushes against the valve.

[0011] Preferably, the directional groove of the control component has a first directional section and a second directional section connected to the first directional section. The first directional section has an angle greater than 90° with the bottom side of the mounting base, while the second directional section has an angle equal to 90° with respect to the bottom side of the mounting base. This allows the push handle to gradually transition from oblique to linear displacement during movement, enabling it to directly push the valve upwards at the end of the displacement. The pushing force is perpendicular to the contact surface between the push handle and the valve, thus more completely transmitting the force to the valve.

[0012] Preferably, the mounting base, pull handle, and push handle of the control component are made of plastic. This reduces the manufacturing cost of the control component and achieves a lightweight effect.

[0013] Preferably, the control assembly's handle has two hooks and a slot between the two hooks, and one end of the cable has a knot. The cable passes through the slot, causing the knot to engage with the two hooks of the handle. In this way, the rope is secured to the handle via the knot, ensuring that the rope remains firmly attached to the hooks of the handle even during long-term use.

[0014] To achieve the aforementioned main objectives, another embodiment of this disclosure provides a bicycle seatpost assembly, which includes an outer tube, an inner tube, a lifting assembly, and a control assembly. The inner tube is vertically movable within the outer tube. The lifting assembly is assembled within the inner tube and has a valve body and a valve element, the valve element being used to control the opening and closing of the valve body. The control assembly is mounted on the outer tube and includes a cable, a mounting base, a pull handle, and a push handle. The inner side of the mounting base has two opposing inner walls, each with a positioning part. The push handle has two oblique directional grooves, with the head end of each groove forming an angle greater than 90° with a horizontal axis. The pull handle is pivotally mounted on the mounting base via a rotating shaft, with one end of the pull handle connected to one end of the cable and the other end abutting against the push handle. The two positioning parts of the mounting base are respectively positioned in the directional grooves of the push handle, allowing the push handle to slide upward along the two positioning parts at an angle greater than 90°, so that the top surface of the push handle pushes against the valve of the lifting assembly.

[0015] The directional groove of this other bicycle seatpost assembly is located on the push handle, while the positioning part is located on the mounting base. This also corrects the outward deflection arc caused by the pull handle abutting against one end of the push handle into a straight displacement, so as to avoid interference in the action path of the control components.

[0016] Detailed construction, features, assembly, and usage of the bicycle seatpost assembly provided in this disclosure will be described in the subsequent detailed description of embodiments. However, those skilled in the art should understand that such detailed descriptions and the specific embodiments listed in this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure. Attached Figure Description

[0017] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a perspective view of a bicycle seatpost assembly according to an embodiment of the present disclosure, including the handlebar portion;

[0019] Figure 2 This is an exploded perspective view of the bicycle seatpost assembly according to an embodiment of the present disclosure, with a partial enlargement of the pull handle and push handle;

[0020] Figure 3 This is a perspective view of the control components according to an embodiment of the present disclosure, showing the combination of the mounting base, pull handle, and push handle of the first embodiment;

[0021] Figure 4 This is a cross-sectional view of the mounting base of the control component according to an embodiment of the present disclosure, showing the obliquely arranged directional groove of the first embodiment;

[0022] Figure 5 This is a cross-sectional view of the lifting assembly and control assembly according to an embodiment of the present disclosure, showing the valve closing position;

[0023] Figure 6 This is a cross-sectional view of the lifting assembly and control assembly according to an embodiment of the present disclosure, showing the valve opening position;

[0024] Figure 7 This is a cross-sectional view of the lifting assembly and control assembly according to an embodiment of the present disclosure, showing an implementation of the second directional section of the directional groove;

[0025] Figure 8 This is a perspective view of a pull handle according to an embodiment of the present disclosure, showing the appearance of a pull handle according to a second embodiment; and

[0026] Figure 9 This is a perspective view of the mounting base according to an embodiment of the present disclosure, showing the positioning portion of the mounting base according to the second embodiment.

[0027] The meanings of the reference numerals in the above figures are as follows:

[0028] 10. Bicycle seatpost assembly;

[0029] 20. Outer tube;

[0030] 30. Inner tube;

[0031] 31. Seat cushion fixing base;

[0032] 40. Lifting assembly;

[0033] 41. Valve body;

[0034] 42. Valves;

[0035] 50. Control components;

[0036] 51. Cable;

[0037] 511. bun;

[0038] 512. Control lever;

[0039] 513. Fasteners;

[0040] 52. Mounting bracket;

[0041] 521. Inner wall;

[0042] 522. Oriented channel;

[0043] 5221. Head end;

[0044] 5222, tail end;

[0045] 523. The connecting part;

[0046] 524. Through hole;

[0047] 525. First Orientation Segment;

[0048] 526. Second Orientation Section;

[0049] 527. Positioning section;

[0050] 53. Pull handle;

[0051] 531. Hook;

[0052] 532. Grooving;

[0053] 533, Groove

[0054] 54. Push handle;

[0055] 541. Bump;

[0056] 542. Positioning section;

[0057] 543. Positioning groove;

[0058] 55. Rotation axis;

[0059] 60. Handlebars; and

[0060] 70. Horizontal axis. Detailed Implementation

[0061] First, it should be noted that in the embodiments and accompanying drawings described below, the same reference numerals denote the same or similar elements or their structural features. It should be observed that the elements and structures in the drawings are for illustrative purposes and are not drawn to scale or in quantity; features of different embodiments may be combined and applied together if feasible in practice. Second, when referring to an element disposed on another element, it means that the aforementioned element is directly disposed on the other element, or indirectly disposed on the other element, or that one or more other elements are disposed between the two elements. Conversely, when referring to an element "directly" disposed on another element, it means that no other elements are disposed between the two elements.

[0062] Please see Figures 1 to 4 The bicycle seatpost assembly 10 disclosed herein mainly includes an outer tube 20, an inner tube 30, a lifting assembly 40, and a control assembly 50.

[0063] The inner tube 30 is inserted inside the outer tube 20. A seat fixing base 31 is assembled at the top of the inner tube 30, and the bottom is assembled with the outer tube 20. The inner tube 30 can be adjusted to move up and down when the lifting component 40 is turned on, so that the inner tube 30 can move up and down along the outer tube 20.

[0064] The lifting assembly 40 is installed in the inner tube 30. The lifting assembly 40 has a valve body 41 and a valve element 42. The valve body 41 is installed inside the inner tube 30. The top end of the valve element 42 can be moved up and down through the valve body 41. The valve element 42 is used to control the opening and closing of the valve body 41. The valve body 41 has an oil chamber (not shown in the figure) or an air chamber (not shown in the figure) for fluid flow. At least two oil chambers or air chambers are provided. When the valve body 41 is open, the fluid is allowed to flow in different oil chambers or air chambers to change the height of the inner tube 30.

[0065] The control assembly 50 is located on the outer tube 20. The control assembly 50 has a cable 51, a mounting base 52, a pull handle 53 and a push handle 54.

[0066] One end of the cable 51 has a bun 511, and the other end has a control lever 512. The control lever 512 is pivotally mounted on a fastener 513, which is then fixed to the handlebar 60. The rider can operate the control lever 512 with his / her fingers.

[0067] The inner side of the mounting base 52 has two opposing inner walls 521, forming a space between the two inner walls 521 to accommodate the pull handle 53 and the push handle 54. A directional groove 522 is provided on each of the two inner walls 521. The directional groove 522 extends from the bottom side of the inner wall 521 to the top side of the inner wall 521 and is inclined at an angle relative to the bottom side of the mounting base 52, so that the directional groove 522 is obliquely arranged on the inner wall 521. Thus, the head end of the directional groove 522 has an included angle θ greater than 90° to 105° with the bottom side of the mounting base 52 (e.g., ...). Figure 4 As shown, as the directional groove 522 extends from the head end 5221 to the tail end 5222, the angle of inclination gradually decreases. The top of the mounting base 52 has a locking part 523 and a through hole 524 that passes through the locking part 523. The mounting base 52 is connected to the inner side of the bottom end of the outer tube 20 through the locking part 523, so that the bottom end of the valve 42 passes through the through hole 524 and abuts against the push handle 54.

[0068] The pull handle 53 is pivotally mounted on the mounting base 52 via a rotating shaft 55. One end of the pull handle 53 has two hooks 531 and a through groove 532 between the two hooks 531. The cable 51 passes through the through groove 532 of the pull handle 53, allowing the coil 511 to be engaged with the two hooks 531, so that the cable 51 remains securely fixed to the pull handle 53 when pulled. The other end of the pull handle 53 abuts against the push handle 54. This end can be directly formed into a flat surface to abut against the push handle 54, or it can be fixed to the push handle 54 by means of a pin. Next, in this embodiment, the pull handle 53 forms a groove 533, and the push handle 54 forms a protrusion 541 corresponding to the groove 533 of the pull handle 53. The protrusion 541 is accommodated in the groove 533. The groove 533 of the pull handle 53 helps to fix the push handle 54, preventing the push handle 54 from shifting during operation. It also allows the force of the pull handle 53 to be transmitted to the push handle 54 more completely. Furthermore, it eliminates the need to provide additional holes for pin fixing on the pull handle 53 and the push handle 54, thus reducing the assembly process.

[0069] A positioning portion 542 is formed on each side of the push handle 54. The two positioning portions 542 are respectively disposed in the two directional grooves 522 of the mounting base 52, so that the push handle 54 can slide along the directional grooves 522 within the mounting base 52, and the top surface of the push handle 54 abuts against the valve member 42 of the lifting assembly 40. In addition, the mounting base 52, pull handle 53 and push handle 54 of the control assembly 50 in this embodiment are all made of plastic and manufactured by injection molding. Thus, compared with the control assembly 50 made of metal, the use of plastic material can significantly reduce the manufacturing cost of the control assembly 50 and achieve a lightweight effect, making it suitable for use in related parts of bicycles.

[0070] Please continue reading. Figure 5 and Figure 6 When the rider wants to adjust the seat height, the rider presses the control lever 512 on the handlebar 60. The control lever 512 drives the cable 51, causing the cable 51 to be pulled, which in turn pulls the hub 511. Since the pull handle 53 is pivotally connected to the mounting base 52 via the rotating shaft 55, forming a lever mechanism with the rotating shaft 55 as the fulcrum, the pull handle 53 deflects downward due to the movement of the hub 511. The end of the pull handle 53 that abuts against the push handle 54 deflects upward, causing the push handle 54 to rise. The directional groove 522 of the mounting base 52 restricts the movement path of the push handle 54. Thus, the push handle 54 moves along the directional groove 522 via two positioning parts 542. The shape of the directional groove 522 is designed as an oblique straight line. When the push handle 54 is lifted upward, the oblique directional groove 522 provides a smooth movement path, so that the outward deflection arc generated by the pull handle 53 abutting against one end of the push handle 54 is corrected into a straight displacement. Thus, the pull handle 53 and the push handle 54 can avoid interference during movement, and the force of the rope being pulled is transmitted more directly and linearly to the valve 42 of the lifting assembly 40, so that the valve 42 can be easily pushed.

[0071] As the push handle 54 moves along the directional groove 522 to its highest point, the movement path of the push handle 54 changes to an upward displacement due to the gradually decreasing angle between the directional groove 522 and the mounting base 52. The angle can be reduced, for example, from 105° to 95°. If the angle is greater than 105°, it will be more difficult to apply force, while if it is less than 95°, there will still be interference problems. When the push handle 54 reaches its highest point, its top surface directly pushes the valve 42 of the lifting assembly 40. The valve 42 moves upward within the valve body 41, making the two oil chambers or air chambers within the valve body 41 connected. At this time, the valve body 41 is in the open state, and the inner tube 30 can move up and down relative to the outer tube 20. In this way, the rider can directly apply downward pressure to the seat (not shown in the figure) during riding to lower the seat height. If the rider leaves the seat, the seat will automatically rise back to its original height.

[0072] When the seat is adjusted to the appropriate height, the rider releases the control lever 512 on the handlebar 60, releasing the traction force on the cable 51. The fluid in the valve body 41 of the lifting assembly 40 presses down the valve 42, making the two oil chambers or air chambers inside the valve body 41 disconnected. At this time, the valve body 41 is in the closed valve state, and the inner tube 30 is fixed and cannot move up and down. The valve 42 pushes the push handle 54 back, and the push handle 54 moves downward obliquely along the directional groove 522. As the push handle 54 moves, the protrusion 541 of the push handle 54 presses down the groove 533 of the pull handle 53, causing the pull handle 53 to deflect through the rotating shaft 55 pivoted on the mounting base 52. The end of the pull handle 53 that abuts against the push handle 54 deflects downward, while the end of the pull handle 53 with the bun 511 deflects upward. The adjusted seat height is then fixed.

[0073] In addition, besides the inclined first directional segment 525, the directional groove 522 of the mounting base 52 of the control component 50 can also form a second directional segment 526 at the top of the first directional segment 525, such as... Figure 7 As shown, the first directional section has an angle θ1 greater than 90° with the bottom side of the mounting base, for example, 105°, while the second directional section has an angle θ2 equal to 90° with respect to the bottom side of the mounting base. The second directional section 526 is located on the top side of the inner wall 521. Since the push handle 54 mainly pushes the valve 42 of the lifting assembly 40 upward, the second directional section 526 is added to the tail end of the directional groove 522. This allows the push handle 54 to move in a completely upward direction as the first directional section 525 moves obliquely. This allows the push handle 54 to directly push the valve 42 upward at the tail end of the movement, making the pushing force perpendicular to the contact surface between the push handle 54 and the valve 42, which helps to transmit the force to the valve 42 more completely.

[0074] The bicycle seatpost assembly 10 described above is the form of the first embodiment. Furthermore, this disclosure provides a second embodiment, which differs from the first embodiment in that the control component 50 is used. The structures of the outer tube 20, inner tube 30, and lifting component 40 in the second embodiment are the same as those in the first embodiment, and therefore will not be described again.

[0075] Please see Figure 8 and Figure 9 In the second embodiment, the control component 50 has two positioning portions 527 respectively disposed on the two inner walls 521 of the mounting base 52. The positioning portions 527 are elongated protrusions, and the two positioning grooves 543 are respectively disposed on both sides of the push handle 54. The head end of the directional groove 543 has an included angle θ greater than 90° to 105° with a horizontal axis. Since a protrusion 541 is formed at the bottom of the push handle 54, the horizontal axis 70 of the imaginary line is used as the baseline of the included angle θ. The two directional grooves 543 of the push handle 54 are respectively fitted onto the two positioning portions 527 of the mounting base 52, so that when the push handle 54 moves with the pull handle 53, the directional grooves 543 can slide along the positioning portions 527 in the mounting base 52 to push the valve member 42 of the lifting component 40 to perform the valve opening action, or to make the valve member 42 of the lifting component 40 press down the push handle 54 to perform the valve closing action.

[0076] The second embodiment also uses an inclined design to limit the movement path of the pull handle 53 and the push handle 54, so that the outward deflection arc caused by the pull handle 53 abutting against one end of the push handle 54 is corrected into a straight displacement. The design of the directional groove 543 of the push handle 54 can also prevent interference in the movement path of the control component 50.

[0077] In summary, the bicycle seatpost assembly provided in this disclosure has at least the following advantages compared to the prior art:

[0078] 1. The bicycle seatpost assembly 10 disclosed herein has a directional groove 522 (543) provided on the mounting base 52 or push handle 54 of the control component 50, and the directional groove 522 (543) is inclined at an angle, so that the action path of the pull handle 53 driving the push handle 54 is smoother, effectively improving the phenomenon that the pull handle 53 and the push handle 54 will deflect outward at the beginning of the stroke, so that the pull handle 53 and the push handle 54 will not interfere with each other on the action path, so that the force can be completely transmitted to the valve 42, thereby reducing the force required for the rider to operate the control component 50.

[0079] 2. The bicycle seatpost assembly 10 disclosed herein controls the opening and closing of the valve body 41 of the lifting assembly 40 via the control component 50. When the valve body 41 is open, the rider can adjust the height of the inner tube 30 to change the height of the seat. In this way, the rider can quickly adjust the seat to a comfortable height and ride the bicycle in a correct and efficient posture.

[0080] Finally, it must be stated again that the constituent elements disclosed in the above embodiments are merely illustrative examples and are not intended to limit the scope of this case. Substitutions or variations of other equivalent elements should also be covered by the protection scope of this case.

Claims

1. A bicycle seatpost assembly, characterized in that, include: One outer tube; An inner tube is installed inside the outer tube and can be moved vertically. A lifting assembly is installed in the inner tube. The lifting assembly has a valve body and a valve element, the valve element controlling the opening and closing of the valve body; and A control component is assembled on the outer tube. The control component has a cable, a mounting base, a pull handle, and a push handle. The inner side of the mounting base has two opposing inner walls, and each of the two inner walls is provided with an oblique directional groove. The head end of the directional groove has an angle greater than 90° with the bottom side of the mounting base. The pull handle is pivotally mounted on the mounting base via a rotating shaft, and one end of the pull handle is connected to one end of the cable. The other end of the pull handle abuts against the push handle. Two positioning parts on both sides of the push handle are respectively provided in the directional groove of the mounting base, so that the push handle slides upward along the head end of the directional groove at an angle greater than 90°, and the top surface of the push handle pushes against the valve of the lifting component.

2. The bicycle seatpost assembly according to claim 1, characterized in that, The control assembly has a pull handle with a groove and a push handle with a protrusion, the pull handle receiving the protrusion through the groove to abut against the push handle.

3. The bicycle seatpost assembly according to claim 1, characterized in that, The included angle is greater than 90°, with a maximum of 105°.

4. The bicycle seatpost assembly according to claim 1 or 3, characterized in that, The included angle gradually decreases from the beginning to the end of the directional groove.

5. The bicycle seatpost assembly according to claim 1, characterized in that, The directional groove of the control component has a first directional section and a second directional section connected to the first directional section. The first directional section has an angle greater than 90° with the bottom side of the mounting base, while the second directional section has an angle equal to 90° with respect to the bottom side of the mounting base.

6. The bicycle seatpost assembly according to claim 1, characterized in that, The mounting base, pull handle, and push handle of the control component are made of plastic.

7. The bicycle seatpost assembly according to claim 1, characterized in that, The control assembly has a handle with two hooks and a slot between the two hooks. One end of the cable has a bun, which passes through the slot so that the bun engages with the two hooks of the handle.

8. A bicycle seatpost assembly, characterized in that, include: One outer tube; An inner tube is installed inside the outer tube and can be moved vertically. A lifting assembly is installed in the inner tube. The lifting assembly has a valve body and a valve element, the valve element controlling the opening and closing of the valve body; and A control component is assembled on the outer tube. The control component has a cable, a mounting base, a pull handle, and a push handle. The inner side of the mounting base has two opposing inner walls, each with a positioning part. The push handle has two oblique directional grooves, with the head end of the directional groove having an angle greater than 90° with a horizontal axis. The pull handle is pivotally mounted on the mounting base via a rotating shaft, with one end of the pull handle connected to one end of the cable and the other end of the pull handle abutting against the push handle. The two positioning parts of the mounting base are respectively provided in the directional grooves of the push handle, allowing the push handle to slide upward along the two positioning parts at an angle greater than 90°, so that the top surface of the push handle pushes against the valve of the lifting component.

9. The bicycle seatpost assembly according to claim 8, characterized in that, The control assembly has a pull handle with a groove and a push handle with a protrusion, the pull handle receiving the protrusion through the groove to abut against the push handle.

10. The bicycle seatpost assembly according to claim 8, characterized in that, The included angle is greater than 90°, with a maximum of 105°.

11. The bicycle seatpost assembly according to claim 8, characterized in that, The mounting base, pull handle, and push handle of the control component are made of plastic.

12. The bicycle seatpost assembly according to claim 8, characterized in that, The control assembly has a handle with two hooks and a slot between the two hooks. One end of the cable has a bun, which passes through the slot so that the bun engages with the two hooks of the handle.

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