Seat tube lifting adjusting structure of bicycle

Abstract

The utility model provides a seat tube lifting adjusting structure of a bicycle. The seat tube lifting adjusting structure comprises an outer tube, an inner tube, an adjusting valve and a control assembly. The control assembly comprises a cable, a mounting base, a first movable handle and a second movable handle, the mounting base is arranged at the bottom end of the outer pipe, the first movable handle is pivoted to the mounting base through a rotating shaft, one end of the cable is clamped to one end of the first movable handle, and one end of the second movable handle is pivoted to the other end of the first movable handle through a connecting shaft; the top face of the second movable handle abuts against the bottom end of the valve unit, the connecting shaft is located on the outer side of the installation base, and the positioning pin and the rotating shaft are both located on the inner side of the connecting shaft. Therefore, opening and closing of the adjusting valve can be controlled by pulling the first movable handle and the second movable handle through the cable, and a rider can adjust the height of the inner pipe.

Description

Technical Field

[0001] The utility model relates to an adjustment structure, in particular to a seat tube lifting adjustment structure for a bicycle, which controls the opening and closing of a seat tube valve unit through a connecting rod mechanism. When the control valve unit is opened, the rider can adjust the height of the bicycle seat. Background Art

[0002] In the field of bicycles, there are many different styles designed to suit different terrains. To meet the needs of the terrain, components such as the frame, wheel set, and transmission system are all configured differently. The height of the bicycle seat is also very important for the rider. When facing different terrains, the riding posture must also be adjusted accordingly to achieve a more efficient and comfortable riding experience. Adjusting the bicycle seat to the correct height helps the rider to ride the bicycle in the correct posture, which can reduce the pressure on the rider's knees, waist, and wrists. Therefore, the height of the bicycle seat is particularly important during long rides.

[0003] To adjust the height of the saddle, bicycles use a dropper seatpost. Currently, the simplest method is to use a quick-release mechanism to secure the seatpost. When the height needs to be adjusted, simply pull the quick-release handle to raise or lower the seatpost. Alternatively, a remote or electronic control can be used to control the seatpost's air or oil valve. When the valve opens, it applies downward pressure to the saddle, lowering the seatpost or automatically returning it to its original height.

[0004] Patent publication number TWM521029U, previously filed by the applicant, provides a remotely controlled seatpost operation method. By pressing a control handle, tension is applied to a cable, which in turn causes a linkage mechanism to open and close an adjustment valve. While this patent does achieve height adjustment for a bicycle seatpost, the bulk of the linkage mechanism's mounting area results in a larger seatpost assembly. Therefore, the applicant sought to develop a seatpost lift adjustment mechanism that could reduce its size, thereby increasing space flexibility. Utility Model Content

[0005] In view of the fact that the above-mentioned existing bicycle seat tube lifting and adjusting structure still has many shortcomings in actual implementation, the applicant has made improvements based on his rich professional knowledge and years of practical experience, and has developed the present utility model accordingly.

[0006] The main purpose of the utility model is to provide a bicycle seat tube lifting and adjustment structure. A control assembly can control the opening and closing of the adjustment valve, so that the rider can adjust the height of the bicycle seat by raising and lowering the inner tube. By changing the relative positions of the shaft and pin of the control assembly, the volume of the fixed structure providing the shaft and pin for mounting the control assembly can be reduced, thereby making the bicycle seat tube more flexible in design.

[0007] In order to achieve the above-mentioned implementation objectives, the seat tube lifting and adjusting structure of the bicycle of the present invention includes an outer tube; an inner tube movably inserted into the outer tube; an adjusting valve having a telescopic unit and a valve unit, the telescopic unit being assembled in the inner tube, the valve unit being inserted into the telescopic unit and extending into the outer tube, the valve unit controlling the opening and closing of the telescopic unit so that the inner tube can be displaced relative to the outer tube; and a control assembly including a cable, a mounting seat, a first movable handle and a second movable handle, the mounting seat being arranged at the bottom end of the outer tube and having a positioning pin, the first movable handle being pivotally mounted on the mounting seat via a rotating shaft, and one end of the first movable handle being clamped with one end of the cable, one end of the second movable handle being pivotally mounted to the other end of the first movable handle via a connecting shaft, the top surface of the second movable handle being in contact with the bottom end of the valve unit, the second movable handle having a positioning groove, the positioning groove being slidably sleeved on the positioning pin of the mounting seat, and the connecting shaft being located on the outside of the mounting seat so that the positioning pin and the rotating shaft are both located on the inside of the connecting shaft.

[0008] In one embodiment of the present invention, the cable of the control assembly is clamped to one end of the first movable handle via a ball head.

[0009] In one embodiment of the present invention, one end of the first movable handle has a hook portion, which further includes two claw members and a through groove formed between the two claw members, so that the cable is passed through the through groove, and the ball head of the cable is clamped in the hook portion of the first movable handle.

[0010] In one embodiment of the present invention, the mounting base of the control component also has a accommodating space to accommodate the first movable handle and the second movable handle, and the accommodating space runs through both sides of the mounting base, so that the two ends of the first movable handle protrude to the outside of the mounting base, and one side of the second movable handle also protrudes to the outside of the mounting base.

[0011] In one embodiment of the present invention, the second movable handle also has a connecting portion and a pushing portion connected to the top side of the connecting portion, the connecting portion has a positioning groove, and the edge side of the connecting portion is pivotally provided with the first movable handle through a connecting shaft, and the top surface of the pushing portion abuts against the bottom end of the valve unit.

[0012] In one embodiment of the present invention, the positioning slot of the second movable handle is arc-shaped.

[0013] In one embodiment of the present invention, the positioning slot of the second movable handle is in the shape of a straight bar.

[0014] In one embodiment of the present invention, the positioning groove of the second movable handle can slidably sleeve the positioning pin and the rotating shaft of the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0016] Figure 1 This is the overall appearance diagram of the utility model;

[0017] Figure 2 It is a combined sectional view of the utility model;

[0018] Figure 3 This is a partial appearance diagram of the utility model;

[0019] Figure 4 A size comparison diagram of the present invention and the prior art;

[0020] Figure 5 It is a partial cross-sectional view of the regulating valve of the present invention when it is closed;

[0021] Figure 6 It is a partial cross-sectional view of the regulating valve of the utility model when it is opened;

[0022] Figure 7 A partial cross-sectional view of a closed regulating valve according to another embodiment of the present invention; and

[0023] Figure 8 This is a partial cross-sectional view of an open regulating valve according to another embodiment of the present invention.

[0024] In the above drawings, the meanings of the reference numerals are as follows:

[0025] 1. External control;

[0026] 2. Inner tube;

[0027] 3. Adjusting valve;

[0028] 31. Telescopic unit;

[0029] 32. Valve unit;

[0030] 4. Control components;

[0031] 41. Cable;

[0032] 411, ball head;

[0033] 412, control lever;

[0034] 413. Fasteners;

[0035] 42. Mounting seat;

[0036] 421, positioning pin;

[0037] 422. Accommodation space;

[0038] 423, snap-fit ​​portion;

[0039] 424, perforation;

[0040] 43. First movable handle;

[0041] 431, hook claw;

[0042] 432, claw parts;

[0043] 433, wear groove;

[0044] 44. Second movable handle;

[0045] 441, junction;

[0046] 442, push part;

[0047] 443, positioning groove;

[0048] 45. Rotation axis;

[0049] 46. ​​Connecting shaft;

[0050] 5. Driver's stand;

[0051] 6. Control components; and

[0052] 7. External control. DETAILED DESCRIPTION

[0053] First, it should be noted that throughout this specification, including the following embodiments and claims, directional terms are based on the directions in the accompanying drawings. Furthermore, in the following embodiments and drawings, identical component numbers represent identical or similar components or structural features.

[0054] See also Figures 1 to 3 and Figure 5 The seat tube lifting and adjusting structure of the bicycle of the present invention mainly comprises an outer tube 1, an inner tube 2, an adjustment valve 3, and a control assembly 4. The inner tube 2 is inserted into the outer tube 1 and can be raised and lowered when the adjustment valve 3 is opened, so that the inner tube 2 moves up and down along the outer tube 1.

[0055] The regulating valve 3 comprises a telescopic unit 31 and a valve unit 32. The telescopic unit 31 is assembled with the inner tube 2 and actuates synchronously with the inner tube 2. The valve unit 32 extends into the outer tube 1 and is movably disposed within the telescopic unit 31 so that a portion of the top end of the valve unit 32 is disposed within the inner tube 2.

[0056] The control assembly 4 includes a cable 41 , a mounting base 42 , a first movable handle 43 , and a second movable handle 44 .

[0057] One end of the cable 41 has a ball head 411 , and the other end is connected to a control rod 412 . The control rod 412 is pivoted on a fastener 413 , which is fixed to the handlebar 5 . The rider can operate the control rod 412 with his fingers.

[0058] The mounting seat 42 has a positioning pin 421, a receiving space 422 extending through both sides of the mounting seat 42, a snap-fitting portion 423 provided at the top of the mounting seat 42, and a through-hole 424 extending through the snap-fitting portion 423. The snap-fitting portion 423 is snap-fitted to the bottom end of the inner side of the outer tube 1, so that the bottom end of the valve unit 32 of the regulating valve 3 is inserted into the through-hole 424 of the mounting seat 42, and the bottom end of the valve unit 32 protrudes to the outside of the outer tube 1.

[0059] One end of the first movable handle 43 has a hook portion 431, which is composed of two claw members 432 and a through slot 433 formed between the two claw members 432. The cable 41 can pass through the through slot 433, allowing the ball head 411 to be clamped in the hook portion 431 of the first movable handle 43, and the first movable handle 43 is accommodated in the accommodating space 422 of the mounting seat 42. A rotating shaft 45 is set at a position approximately in the center of the first movable handle 43, and the first movable handle 43 is pivotally connected to the mounting seat 42 through the rotating shaft 45, and the two ends of the first movable handle 43 will protrude to the outside of the mounting seat 42.

[0060] The second movable handle 44 has a coupling portion 441, a pushing portion 442 arranged on the top side of the coupling portion 441 and a positioning groove 443 arranged on the coupling portion 441. A connecting shaft 46 is provided at one end or one side of the coupling portion 441. The second movable handle 44 is pivotally connected to the first movable handle 43 through the connecting shaft 46. The positions where the second movable handle 44 and the first movable handle 43 are provided with the connecting shaft 46 will protrude to the outside of the mounting seat 42, and the top surface of the pushing portion 442 of the second movable handle 44 abuts against the bottom end of the valve unit 32, and the positioning groove 443 is then provided with the positioning pin 421 of the mounting seat 42.

[0061] The first movable handle 43 of the present invention is pivotally connected to the safety seat by the rotating shaft 45, and the positioning pin 421 of the positioning groove 443 of the second movable handle 44 is both assembled with the mounting seat 42. However, the first movable handle 43 and the second movable handle 44 are not restricted by the accommodating space 422 of the mounting seat 42, so the position of the connecting shaft 46 is located outside the mounting seat 42. In this way, the rotating shaft 45 and the positioning pin 421 are both set on the inside of the connecting shaft 46. Through this configuration, the width of the second movable handle 44 can be reduced, and the valve unit 32 can be pushed with a shorter displacement stroke, which means that the volume of the control assembly 4 will also be reduced. Figure 4As shown, a comparison diagram of the dimensions of this embodiment and the prior art is shown, which measures the height of the control assembly 4 on the outside of the outer tube 1 and the height of the control assembly 6 on the outside of the outer tube 7. The dimensions of the prior art are 33.8 mm, while the dimensions of this embodiment are 24.1 mm. It can be seen that the height of the control assembly 4 of this embodiment can be reduced by about 30% compared to the prior art. Therefore, the small size of the control assembly 4 of the present invention makes the bicycle seat tube more flexible in design.

[0062] Please continue reading Figure 5 and Figure 6 When the rider wants to adjust the height of the seat, the rider presses the control lever 412 on the handlebar frame 5. The control lever 412 pulls the cable 41, and the ball head 411 at one end of the cable 41 is pulled downward. The hook portion 431 of the first movable handle 43 is driven by the ball head 411, causing the first movable handle 43 to deflect through the rotating shaft 45 pivotally connected to the mounting seat 42. The end of the connecting shaft 46 between the first movable handle 43 and the second movable handle 44 is lifted upward, driving the second movable handle 44 to move upward as a whole. The positioning pin 421 and the positioning slot 443 are used to limit the movement path of the second movable handle 44. Therefore, the positioning pin 421 does not move, and the second movable handle 44 moves along the shape of the positioning slot 443.

[0063] In this embodiment, the positioning slot 443 of the second movable handle 44 is designed to be arcuate. When the second movable handle 44 is raised, the arcuate positioning slot 443 provides a smoother movement path, preventing the second movable handle 44 from getting stuck during movement. When the second movable handle 44 reaches its highest point, the positioning pin 421 abuts the bottom end of the positioning slot 443, and the top surface of the pushing portion 442 of the second movable handle 44 pushes against the valve unit 32 of the adjustment valve 3. The valve unit 32 then linearly moves along the telescopic unit 31, opening the passage within the telescopic unit 31. At this point, the inner tube 2 can linearly move relative to the outer tube 1. In this way, the rider can directly apply downward pressure to the seat (not shown) to lower the seat height during riding, or the rider can automatically raise the seat to its original height when leaving the seat.

[0064] When the seat is adjusted to a suitable height, the rider releases the control lever 412 on the rider frame 5, releasing the force of the cable 41 pulling the ball head 411. At this time, the telescopic unit 31 pushes back the valve unit 32, so that the bottom end of the valve unit 32 pushes against the top surface of the pushing portion 442 of the second movable handle 44. The second movable handle 44 then moves downward along the shape of the positioning groove 443. The first movable handle 43 is deflected by the rotating shaft 45 pivotally connected to the mounting seat 42. One end of the connecting shaft 46 provided between the first movable handle 43 and the second movable handle 44 sinks, so that the hook portion 431 of the first movable handle 43 is lifted upward to close the passage of the telescopic unit 31, and the rider can fix the adjusted seat height.

[0065] Also, please continue to read Figure 7 and Figure 8 The positioning groove 443 of the second movable handle 44 is designed to be a straight bar, and the positioning groove 443 will simultaneously cover the positioning pin 421 of the mounting seat 42 and the rotating shaft 45. When the cable 41 is pulled, the first movable handle 43 is deflected through the rotating shaft 45, and the end of the first movable handle 43 and the second movable handle 44 provided with the connecting shaft 46 will be lifted upward, and drive the second movable handle 44 to move upward as a whole. At this time, the positioning pin 421 and the rotating shaft 45 will not produce linear displacement, and the second movable handle 44 will move along the shape of the positioning groove 443, and the pushing portion 442 of the second movable handle 44 will push against the valve unit 32 of the adjustment valve 3, allowing the rider to adjust the seat height.

[0066] From the above description, it can be seen that compared with the prior art, the present invention has the following advantages:

[0067] 1. The present invention's seat tube lift adjustment mechanism utilizes a control assembly to control the opening and closing of an adjustment valve, allowing the inner tube to be raised and lowered. This allows the rider to quickly adjust the seat to a comfortable height and maintain a correct riding posture.

[0068] 2. The seat post adjustment mechanism of the present invention features a connecting shaft located outside the mounting base, while the locating pin and rotating shaft are located inside the mounting base. This placement of the locating pin and rotating shaft inside the connecting shaft reduces the overall volume of the control assembly, allowing for greater flexibility in seat post design.

[0069] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be employed, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be employed without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. A bicycle seat tube lifting and adjusting structure, characterized in that: include: One external tube; an inner tube movably disposed inside the outer tube; an adjusting valve comprising a telescopic unit and a valve unit, the telescopic unit being assembled with the inner tube, the valve unit being movably disposed through the telescopic unit and extending into the outer tube, the valve unit controlling the opening and closing of the telescopic unit to cause the inner tube to move relative to the outer tube; and A control component includes a cable, a mounting seat, a first movable handle and a second movable handle. The mounting seat is arranged at the bottom end of the outer tube and has a positioning pin. The first movable handle is pivoted to the mounting seat through a rotating shaft, and one end of the first movable handle is clamped with one end of the cable. One end of the second movable handle is pivoted to the other end of the first movable handle through a connecting shaft. The top surface of the second movable handle abuts the bottom end of the valve unit. The second movable handle has a positioning groove, which can be slidably mounted on the positioning pin of the mounting seat, and the connecting shaft is located on the outside of the mounting seat, so that the positioning pin and the rotating shaft are both located on the inside of the connecting shaft.

2. The bicycle seat tube lifting and adjusting structure according to claim 1, characterized in that: The cable of the control assembly is clamped to one end of the first movable handle through a ball head.

3. The bicycle seat tube lifting and adjusting structure according to claim 2, characterized in that: One end of the first movable handle has a hook portion, which also includes two claws and a through groove formed between the two claws, so that the cable is passed through the through groove, and the ball head of the cable is clamped in the hook portion of the first movable handle.

4. The bicycle seat tube lifting and adjusting structure according to claim 1, characterized in that: The mounting base of the control component also has a accommodating space to accommodate the first movable handle and the second movable handle, and the accommodating space runs through both sides of the mounting base, so that the two ends of the first movable handle protrude to the outside of the mounting base, and one side of the second movable handle also protrudes to the outside of the mounting base.

5. The bicycle seat tube lifting and adjusting structure according to claim 1, characterized in that: The second movable handle also has a connecting portion and a pushing portion connected to the top side of the connecting portion. The connecting portion has the positioning groove, and the edge side of the connecting portion pivotally mounts the first movable handle through the connecting shaft, and the top surface of the pushing portion abuts against the bottom end of the valve unit.

6. The bicycle seat tube lifting and adjusting structure according to claim 1 or 5, characterized in that: The positioning groove of the second movable handle is in an arc shape.

7. The bicycle seat tube lifting and adjusting structure according to claim 1 or 5, characterized in that: The positioning groove of the second movable handle is in the shape of a straight bar.

8. The bicycle seat tube lifting and adjusting structure according to claim 7, characterized in that: The positioning groove of the second movable handle can be slidably sleeved with the positioning pin of the mounting seat and the rotating shaft.

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