Bicycle stand pipe with built-in locking mechanism based on folding bicycle

Abstract

The utility model relates to the technical field of bicycles, and discloses a bicycle stand pipe with a built-in locking mechanism based on a folding bicycle, the bicycle stand pipe comprises a lower stand pipe seat, a rotating block is fixedly connected to the outer wall of the lower stand pipe seat, an upper stand pipe seat is rotatably connected to the outer wall of the rotating block, and an outer groove is formed in the outer wall, away from the rotating block, of the lower stand pipe seat; the outer wall of the outer groove is rotationally connected with a rotating connecting shaft, the outer wall of the rotating connecting shaft is in threaded connection with a locking rod, the outer wall of the upper vertical pipe base is provided with a clamping groove corresponding to the locking rod, the outer wall of the locking rod is fixedly connected with a rotating cover, the outer wall of the upper vertical pipe base is provided with a buckle assembly, and the outer wall of the rotating cover is provided with a fixing groove matched with the buckle assembly. The locking rod on the bicycle folding vertical pipe can be limited and controlled, the locking rod is prevented from shaking or moving under a non-subjective condition, the use stability of the bicycle vertical pipe is improved, meanwhile, the folding vertical pipe of the bicycle is stably fixed, and the safety of the folding bicycle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of bicycles, and in particular to a bicycle seat tube with a built-in locking mechanism based on a folding bicycle. Background Art

[0002] Riding a bicycle is not only environmentally friendly, but also exercises the rider's legs during the ride, which is beneficial to people's health. However, when the distance is long and you need to take the subway or bus, the bicycle is not easy to carry because of its large structure. Therefore, there are also folding bicycles. Folding bicycles are a category of bicycles. Generally, folding bicycles have a frame folding joint and a seat tube folding joint.

[0003] In response to the above-mentioned related technologies, the inventor believes that although the stems of existing folding bicycles use a folder for folding, they lack a certain locking mechanism. As a result, the stems are easily shaken when folded for a long time. At the same time, the locking rod of the folding stem can fall off under unintentional conditions, reducing the safety of riding the folding bicycle. Therefore, a bicycle stem with a built-in locking mechanism based on a folding bicycle is proposed to solve the above-mentioned problems.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0005] In order to solve the above problems, the present application provides a bicycle seat tube with a built-in locking mechanism based on a folding bicycle.

[0006] The present application provides a bicycle seat tube with a built-in locking mechanism for a folding bicycle, which adopts the following technologies:

[0007] A bicycle stem with a built-in locking mechanism based on a folding bicycle comprises a lower stem tube seat, an outer wall of the lower stem tube seat is fixedly connected to a rotating block, an outer wall of the rotating block is rotatably connected to an upper stem tube seat, an outer wall of the lower stem tube seat facing away from the rotating block is provided with an outer groove, an outer wall of the outer groove is rotatably connected to a rotating connecting shaft, an outer wall of the rotating connecting shaft is threadedly connected to a locking rod, an outer wall of the upper stem tube seat is provided with a clamping groove corresponding to the locking rod, an outer wall of the locking rod is fixedly connected to a rotating cover, an outer wall of the upper stem tube seat is provided with a buckle assembly, and an outer wall of the rotating cover is provided with a fixing groove adapted to the buckle assembly.

[0008] Preferably, a locking block is slidably sleeved on the outer wall of the locking rod, and a locking groove adapted to the locking block is formed on the outer wall of the upper riser seat.

[0009] Preferably, the snap assembly includes a limit box, which is fixedly connected to the outer wall of the upper riser seat, and the inner wall of the limit box is slidably connected to a square plate, a spring is provided between the square plate and the limit box, and the spring is fixedly connected to the square plate and the limit box, the outer wall of the square plate is fixedly connected to a pull rod, and the pull rod is sleeved in the spring and rotates through the limit box to the outside, and the outer wall of the square plate away from the pull rod is fixedly connected to the limit block.

[0010] Preferably, the outer wall of the lower riser seat is provided with a sealing groove adapted to the upper riser seat.

[0011] Preferably, the end of the limit block is designed to be trapezoidal.

[0012] In summary, this application has the following beneficial technical effects:

[0013] The lower stem seat and the upper stem seat are provided so that the lower stem seat is docked with the sealing groove on the upper stem seat, and the locking rod is driven to correspond to the slot by rotating the rotating connecting shaft, so that the locking rod is driven to rotate by rotating the rotating cover, so that the rotating cover moves downward, and at the same time the locking block is caused to correspond to the locking slot, so that the rotating cover completes the fixation between the locking block and the locking slot, and the locking rod is prevented from being separated from the slot by the locking block and the locking slot, and the rotating cover is further fixed by the provided buckle assembly and the fixing slot, so as to prevent the locking rod from rotating due to shaking. As a result, compared with the existing technology, the locking rod on the folding stem of the bicycle can be limited and controlled to prevent it from being shaken or moving due to non-subjective adjustment, thereby improving the stability of the bicycle stem in use, and at the same time firmly fixing the folding stem of the bicycle, thereby improving the safety of the folding bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of an embodiment of the application;

[0015] Figure 2 is a schematic diagram of a three-dimensional top view of the structure of an embodiment of the application;

[0016] Figure 3 This is a cross-sectional view of the internal structure of the limit box of the embodiment of the application;

[0017] Figure 4 for Figure 3 A magnified schematic diagram of the structure in the middle.

[0018] Explanation of the accompanying reference numerals: 1. Lower riser seat; 2. Sealing groove; 3. Outer groove; 4. Rotating connecting shaft; 5. Locking rod; 6. Locking block; 7. Rotating cover; 8. Upper riser seat; 9. Rotating block; 12. Slot; 13. Locking groove; 14. Limit box; 15. Limit block; 16. Square plate; 17. Pull rod; 18. Spring; 19. Fixing groove. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-4 This application is described in further detail.

[0020] The embodiment of the present application discloses a bicycle seat tube with a built-in locking mechanism based on a folding bicycle. Figure 1-4 , a bicycle stem with a built-in locking mechanism based on a folding bicycle, includes a lower stem tube seat 1, characterized in that: the outer wall of the lower stem tube seat 1 is fixedly connected to a rotating block 9, the outer wall of the rotating block 9 is rotatably connected to the upper stem tube seat 8, and the upper stem tube seat 8 is docked with the lower stem tube seat 1 to achieve the folding of the bicycle stem, and the outer wall of the lower stem tube seat 1 away from the rotating block 9 is provided with an outer groove 3, the outer wall of the outer groove 3 is rotatably connected to a rotating connecting shaft 4, and the outer wall of the rotating connecting shaft 4 is threadedly connected to a locking rod 5, and the outer wall of the upper stem tube seat 8 is provided with a card groove 12 corresponding to the locking rod 5, and the rotating connecting shaft 4 is rotated to drive the rotating connecting shaft 4 to engage with the card groove 12, thereby facilitating the fixation between the upper stem tube seat 8 and the lower stem tube seat 1, and the outer wall of the locking rod 5 is fixed The locking rod 5 is screwed to the rotating shaft 4 by rotating the rotating cover 7, so that the rotating cover 7 drives the locking rod 5 to rotate, and then the rotating cover 7 is moved downward, so that the rotating cover 7 fits against the outer wall of the upper standpipe seat 8, and the lower standpipe seat 1 and the upper standpipe seat 8 are fixed. The outer wall of the upper standpipe seat 8 is provided with a snap assembly, and the outer wall of the rotating cover 7 is provided with a fixing groove 19 adapted to the snap assembly. When the rotating cover 7 moves downward, it is engaged with the snap assembly through the fixing groove 19, so that when the standpipe vibrates and shakes, the locking rod 5 shakes and cannot drive the rotating cover 7 to rotate by limiting the rotating cover 7, thereby improving the fixing stability between the upper standpipe seat 8 and the lower standpipe seat 1, and avoiding loosening between the rotating cover 7 and the upper standpipe seat 8.

[0021] The outer wall of the locking rod 5 is slidably sleeved with a locking block 6, and the outer wall of the upper stem seat 8 is provided with a locking groove 13 adapted to the locking block 6. When the locking rod 5 corresponds to the slot 12, the locking block 6 is slid and moved to engage with the locking groove 13. Then, when the rotating cover 7 moves downward to fix the lower stem seat 1 and the upper stem seat 8, it also fixes the locking block 6 and the locking groove 13. The fixation of the locking block 6 and the locking groove 13 can limit the locking rod 5, prevent the locking rod 5 from disengaging from the slot 12, and improve the stability of the bicycle stem.

[0022] The snap assembly includes a limit box 14, which is fixedly connected to the outer wall of the upper standpipe seat 8, and a square plate 16 is slidably connected to the inner wall of the limit box 14. A spring 18 is provided between the square plate 16 and the limit box 14. The elastic force of the spring 18 can drive the square plate 16 to rebound, and the spring 18 is fixedly connected to the square plate 16 and the limit box 14. A pull rod 17 is fixedly connected to the outer wall of the square plate 16, and the pull rod 17 is sleeved in the spring 18 and rotated through the limit box 14 to the outside, and the square plate 16 is away from the outer side of the pull rod 17. The wall is fixedly connected to the limit block 15. When the rotating cover 7 rotates and moves downward, the pull rod 17 is pulled to make the pull rod 17 drive the square plate 16 to retract, so that the square plate 16 drives the limit block 15 to retract. When the fixed groove 19 provided on the rotating cover 7 corresponds to the limit block 15, the pull on the pull rod 17 is released, so that the spring 18 drives the square plate 16 to rebound, so that the square plate 16 drives the limit block 15 to engage with the fixed groove 19, thereby completing the fixation of the rotating cover 7 and preventing the rotating cover 7 from rotating.

[0023] The outer wall of the lower riser seat 1 is provided with a sealing groove 2 adapted to the upper riser seat 8 . The sealing groove 2 can improve the sealing between the upper riser seat 8 and the lower riser seat 1 , thereby reducing internal maintenance costs.

[0024] The end of the limiting block 15 is designed to be trapezoidal, so as to be easily engaged with the fixing groove 19 .

[0025] The implementation principle of the bicycle stem with a built-in locking mechanism based on the folding bicycle in the embodiment of the present application is as follows: first, the upper stem seat 8 is folded by docking the sealing groove 2 on the lower stem seat 1, and then the rotating connecting shaft 4 is rotated to drive the locking rod 5 to engage with the card groove 12, and the locking block 6 located on the rotating cover 7 is slid and moved to engage with the locking groove 13 on the upper stem seat 8, and then the rotating cover 7 is rotated to drive the locking rod 5 to rotate, ensuring that the locking rod 5 and the outer groove 3 rotate, and then the rotating cover 7 is moved downward to make the rotating cover 7 contact with the surface of the locking block 6, ensuring that the rotating cover 7 improves the locking The fit between the tightening block 6 and the locking groove 13 is improved. At the same time, when the rotating cover 7 rotates and moves downward, by pulling the pull rod 17, the pull rod 17 drives the square plate 16 to shrink, so that the square plate 16 drives the limit block 15 to shrink, so that the fixing groove 19 opened on the rotating cover 7 corresponds to the limit block 15, thereby loosening the pull rod 17, and the square plate 16 rebounds through the elastic force of the spring 18, so that the square plate 16 drives the limit block 15 to engage with the fixing groove 19. It is worth noting that when the rotating cover 7 moves downward to the bottom to fix the locking block 6, the fixing groove 19 on the rotating cover 7 just corresponds to the limit block 15, thereby completing the fixation between the lower standpipe seat 1 and the upper standpipe seat 8.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0027] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0029] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bicycle stem with a built-in locking mechanism for a folding bicycle, comprising a lower stem seat (1), characterized in that: The outer wall of the lower vertical pipe seat (1) is fixedly connected to a rotating block (9), the outer wall of the rotating block (9) is rotatably connected to the upper vertical pipe seat (8), the outer wall of the lower vertical pipe seat (1) away from the rotating block (9) is provided with an outer groove (3), the outer wall of the outer groove (3) is rotatably connected to a rotating connecting shaft (4), the outer wall of the rotating connecting shaft (4) is threadedly connected to a locking rod (5), the outer wall of the upper vertical pipe seat (8) is provided with a clamping groove (12) corresponding to the locking rod (5), the outer wall of the locking rod (5) is fixedly connected to a rotating cover (7), the outer wall of the upper vertical pipe seat (8) is provided with a snap assembly, and the outer wall of the rotating cover (7) is provided with a fixing groove (19) adapted to the snap assembly.

2. The bicycle seat tube with a built-in locking mechanism for a folding bicycle according to claim 1, characterized in that: The outer wall of the locking rod (5) is slidably sleeved with a locking block (6), and the outer wall of the upper riser seat (8) is provided with a locking groove (13) adapted to the locking block (6).

3. The bicycle seat tube with a built-in locking mechanism for a folding bicycle according to claim 1, characterized in that: The snap assembly includes a limit box (14), the limit box (14) is fixedly connected to the outer wall of the upper riser seat (8), the inner wall of the limit box (14) is slidably connected to a square plate (16), a spring (18) is provided between the square plate (16) and the limit box (14), and the spring (18) is fixedly connected to the square plate (16) and the limit box (14), the outer wall of the square plate (16) is fixedly connected to a pull rod (17), and the pull rod (17) is sleeved in the spring (18) and rotated through the limit box (14) to the outside, and the outer wall of the square plate (16) away from the pull rod (17) is fixedly connected to the limit block (15).

4. The bicycle seat tube with a built-in locking mechanism for a folding bicycle according to claim 1, characterized in that: The outer wall of the lower riser seat (1) is provided with a sealing groove (2) adapted to the upper riser seat (8).

5. The bicycle seat tube with a built-in locking mechanism for a folding bicycle according to claim 3, characterized in that: The end of the limit block (15) is designed to be trapezoidal.

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