Handle stem quick-mounting structure and bicycle

Abstract

The utility model provides a stem quick-mounting structure, and relates to the technical field of bicycles, the stem quick-mounting structure comprises a stem and a vertical tube, an insertion end at the bottom of the stem is suitable for being inserted from a top opening of the vertical tube, a first clamping part is arranged on the side wall of the stem, and a guide slope is arranged at the end part of the insertion end of the stem; the positioning device is assembled on the vertical pipe, the positioning device comprises a second clamping part capable of moving in the radial direction of the vertical pipe and a bias pressure piece applying bias pressure towards the interior of the vertical pipe to the second clamping part, and the second clamping part is provided with an extending position extending into the vertical pipe and a retracting position moving outwards in the radial direction of the second clamping part to retreat from the interior of the vertical pipe; when the stem is inserted into the vertical pipe, the guide slope pushes the second clamping part to move from the extending position to the retracting position, and when the first clamping part is aligned with the second clamping part, the second clamping part moves from the retracting position to the extending position under the action of bias pressure of the bias pressure piece and is in clamping fit with the first clamping part. The defect that a handlebar stem and a vertical pipe are inconvenient to install in the prior art is overcome.

Description

Technical Field

[0001] This application relates to the field of bicycle technology, and more specifically, to a handlebar quick-release structure and a bicycle. Background Technology

[0002] Currently, bicycle stems are generally installed using two methods: threaded and threadless, both of which use screws for tightening. This means that tools are required to assist in the installation of the bicycle handlebar assembly. Without suitable tools, it is impossible to install the stem and seat tube.

[0003] As people demand increasingly easier and simpler assembly and disassembly of bicycles, the inconvenient structure between the stem and the seat tube has seriously impacted people's lives. Utility Model Content

[0004] The purpose of this application is to provide a quick-install stem structure and bicycle, which aims to solve the defects of the stem and seat tube in the related technology that are inconvenient to install.

[0005] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application.

[0006] According to a first aspect of this application, a quick-release mechanism includes:

[0007] The handlebar has a first quick-connect part on its side wall and an insertion end at its bottom.

[0008] A vertical tube with an opening at the top, wherein the insertion end of the handle is adapted to be inserted into the opening of the vertical tube;

[0009] A positioner, fitted onto the riser, the positioner including a second quick-connect portion movable radially along the riser and a biasing member applying a biasing force toward the interior of the riser to the second quick-connect portion, the second quick-connect portion having an extended position extending into the interior of the riser and a retracted position moving radially outward from the interior of the riser.

[0010] During the insertion of the stem into the vertical tube, when the first quick-connect part and the second quick-connect part are aligned, the second quick-connect part moves from the retracted position to the extended position under the biasing force of the biasing member and forms a quick-connect connection with the first quick-connect part.

[0011] In one exemplary embodiment of this application, the end of the insertion end is provided with a guide slope, and when the handle is inserted into the vertical tube, the guide slope pushes the second quick-connect part from the extended position to the retracted position.

[0012] In one exemplary embodiment of this application, the end face of the second quick-connect portion facing the stem is configured as a wedge-shaped surface that slopes downward toward the stem, the wedge-shaped surface being used to engage with the guide slope when the stem is inserted into the vertical tube.

[0013] In one exemplary embodiment of this application, the biasing member is an elastic member assembled on the side of the second quick-connect portion away from the handlebar stem, and the biasing force is an elastic force applied by the elastic member to the side of the second quick-connect portion away from the handlebar stem and toward the handlebar direction; the elastic member stores energy when the second quick-connect portion moves from the extended position to the retracted position, and releases energy when the second quick-connect portion is aligned with the first quick-connect portion, thereby pushing the second quick-connect portion from the retracted position to the extended position.

[0014] In one exemplary embodiment of this application, the locator further includes a locator body, which is fixedly mounted on the top of the vertical pipe. A sliding cavity for assembling the second quick-connect part is provided on one side of the locator body. The second quick-connect part is located in the sliding cavity and slidably connected to the locator body. A spring mounting cavity is provided on the side of the second quick-connect part away from the vertical pipe. The elastic element is configured as a compression spring, which is installed in the spring mounting cavity. One end of the compression spring abuts against the cavity wall of the spring mounting cavity near the vertical pipe, and the other end abuts against the closed plate on the side of the spring mounting cavity away from the vertical pipe.

[0015] In one exemplary embodiment of this application, the positioner further includes a pull rod, and a pull rod mounting cavity is provided inside the second quick-connect portion. The extension direction of the pull rod mounting cavity is consistent with the sliding direction of the second quick-connect portion. The pull rod is assembled in the pull rod mounting cavity, and one end of the pull rod away from the vertical tube extends out from the closed plate.

[0016] In one exemplary embodiment of this application, the positioner further includes a handle mounted on the end of the pull rod extending from the closure plate.

[0017] In one exemplary embodiment of this application, the handle is a flip-up handle, and the flip-up handle includes:

[0018] A connecting bracket is fixedly connected to the side of the locator body away from the first quick-connect part;

[0019] A flap, rotatably connected to the connecting frame, is provided with an operating part and a rotating shaft. The operating part is fixedly connected to one side of the rotating shaft. The circumferential sidewall of the rotating shaft abuts against the side of the connecting frame away from the positioner body. The rotation axis of the rotating shaft is perpendicular to the movement direction of the pull rod in the same horizontal plane. A hinge point is provided between the pull rod and the rotating shaft for hinged connection. The hinge point is located on the rotation axis of the rotating shaft. The distance from the rotation axis of the rotating shaft to one side wall and to the other side wall is unequal. When the rotating shaft rotates the side wall farther from the rotation axis toward the positioner body, the rotating shaft can drive the second quick-connect part to move away from the handlebar and compress the compression spring to store energy. When the rotating shaft rotates the side wall closer to the rotation axis toward the positioner body, the compression spring releases elastic potential energy, causing the second quick-connect part to move toward the handlebar.

[0020] A pin passes through the rotating shaft and the pull rod along the rotation axis of the rotating shaft and can be slidably connected to the connecting frame along the moving direction of the second quick-connect part.

[0021] In an exemplary embodiment of this application, the circumferential sidewall of the rotating shaft includes an inner moving region for moving the second quick-connect part toward the inside of the vertical pipe, and an outer moving region for moving the second quick-connect part toward the outside of the vertical pipe. The inner moving region and the outer moving region are located on the same arc surface. The distance from the rotation axis of the rotating shaft to the outer moving region is greater than the distance to the inner moving region. The rotation axis of the rotating shaft is located on its center line biased toward the inner moving region.

[0022] In one exemplary embodiment of this application, the locator further includes a safety component disposed between the operating part and the connecting frame for locking the flip plate; the safety component includes:

[0023] A safety bolt passes through the operating part and is rotatably connected to the operating part;

[0024] The safety nut is fixedly connected to the connecting bracket, and the safety bolt is threadedly connected to the safety nut.

[0025] In one exemplary embodiment of this application, the locator body includes a base and a base. The base is located below the base and is detachably connected to the base. The base has a through hole, through which the vertical tube passes. The circumferential sidewall of the vertical tube is provided with a third snap-fit ​​portion, and the base is provided with a fourth snap-fit ​​portion in the through hole. The base and the vertical tube are fixed relative to each other in the horizontal direction by the snap-fit ​​cooperation of the third snap-fit ​​portion and the fourth snap-fit ​​portion.

[0026] In one exemplary embodiment of this application, the first quick-connect portion is provided with a plurality of portions along the side wall of the handle.

[0027] In one exemplary embodiment of this application, the first quick-connect portion is a first snap-fit ​​portion, the second quick-connect portion is a second snap-fit ​​portion, and the first snap-fit ​​portion and the second snap-fit ​​portion form a snap-fit ​​engagement.

[0028] In one exemplary embodiment of this application, a shock-absorbing spring is installed at the bottom of the vertical tube, and after the stem and the vertical tube are quickly connected, the insertion end at the bottom of the stem abuts against the shock-absorbing spring.

[0029] According to a second aspect of this application, a bicycle is provided, comprising a stem quick-release structure as described in any of the preceding claims.

[0030] The exemplary embodiments of this application may have some or all of the following beneficial effects:

[0031] In a stem provided in the example embodiment of this application, by inserting the stem into the riser and sliding it along the length of the riser, the second locking part is in the extended position. When the bottom of the stem moves to the position of the second locking part, the stem continuously applies pressure to the second locking part. This pressure is greater than the biasing force applied to the second locking part by the biasing member, so the stem gradually retracts the second locking part to the retracted position, allowing the stem to continue sliding within the riser. When the first locking part and the second locking part on the stem are aligned, the stem loses pressure on the second locking part. At this time, the biasing member pushes the second locking part from the retracted position to the extended position through the biasing force, so that the second locking part and the first locking part form a locking engagement, thereby fixing the stem to the riser. According to the above structure, simply by directly inserting the stem into the riser, when the first locking part and the second locking part are aligned, the riser and the stem can be automatically fixed without the need for other auxiliary tools, thus providing convenience for the user in assembling the stem.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0034] Figure 1A schematic diagram of a quick-release structure according to an embodiment of this application is shown;

[0035] Figure 2 A cross-sectional view of a quick-assembly structure according to an embodiment of this application is shown;

[0036] Figure 3 It shows Figure 2 Enlarged view of section A;

[0037] Figure 4 An exploded view of the locator in an embodiment of this application is shown;

[0038] Figure 5 A partial schematic diagram of the connection structure between the base and the vertical tube in an embodiment of this application is shown.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Handle; 11. First locking part; 12. Guide slope; 2. Vertical tube; 21. Third locking part; 3. Positioner; 31. Second locking part; 32. Biasing component; 33. Positioner body; 331. Base; 332. Base; 3321. Fourth locking part; 34. Pull rod; 35. Handle; 4. Connecting frame; 41. Connecting plate; 42. Side plate; 421. Movable groove; 5. Flip plate; 51. Rotating shaft; 511. Inward movement area; 512. Outward movement area; 52. Operating part; 6. Pin; 7. Safety assembly; 71. Safety bolt; 72. Safety sleeve; 8. Shock-absorbing spring. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted. Furthermore, the drawings are merely illustrative of this application and are not necessarily drawn to scale.

[0042] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples in the accompanying drawings. It is understood that if the device of the icon is flipped so that it is upside down, the component described as "upper" will become the component described as "lower." When a structure is "upper" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0043] The terms “a,” “one,” “the,” and “at least one” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first” and “second” are used only as markers and are not a limitation on the number of objects.

[0044] like Figure 1 and Figure 2 As shown in the embodiment of this application, a quick-release stem structure is provided, including a stem 1 and a vertical tube 2. The insertion end at the bottom of the stem 1 is adapted to be inserted from the top opening of the vertical tube 2 and slidably connected to the vertical tube 2. A first snap-fit ​​part 11 is provided on the side wall of the stem 1, and a guide slope 12 is provided at the end of the insertion end of the stem 1.

[0045] like Figure 2 and Figure 3 As shown in the embodiment of this application, the quick-release structure of the handle also includes a positioner 3, which is assembled onto the vertical tube 2. The positioner 3 includes a second locking part 31 that can move radially along the vertical tube 2 and a biasing member 32 that applies a biasing force toward the interior of the vertical tube 2 to the second locking part 31. The second locking part 31 has an extended position that extends into the interior of the vertical tube 2 and a retracted position that moves radially outward and exits the interior of the vertical tube 2.

[0046] When the handle 1 is inserted into the vertical tube 2, the guide slope 12 pushes the second locking part 31 from the extended position to the retracted position. When the first locking part 11 and the second locking part 31 are aligned, the second locking part 31 moves from the retracted position to the extended position under the biasing force of the biasing member 32 and forms a locking engagement with the first locking part 11.

[0047] In this embodiment, the second locking portion 31, under the biasing force applied by the biasing member 32, initially stops at its extended position. When the handlebar 1 is inserted into the riser tube 2 and slides along its length, the guide ramp 12 at the bottom of the handlebar 1 begins to contact the second locking portion 31. As the handlebar 1 slides further, the force exerted by the handlebar 1 on the second locking portion 31 is greater than the biasing force exerted by the biasing member 32 on the second locking portion 31, forcing the second locking portion 31 to gradually retract from its extended position to its retracted position. This process allows the handlebar 1 to slide smoothly within the riser tube 2 until the first locking portion 11 on the handlebar 1 aligns with the second locking portion 31.

[0048] At this point, the stem 1 no longer applies pressure to the second locking part 31, and the biasing member 32 then pushes the second locking part 31 from the retracted position to the extended position through biasing force, forming a tight locking engagement with the first locking part 11. This locking action ensures a stable connection between the stem 1 and the vertical tube 2, achieving a fixed state for both.

[0049] The above structure ensures that the stem 1 is tightly connected to the riser 2 after insertion, preventing loosening or wobbling during use and thus improving safety. Furthermore, after inserting the stem 1 into the riser 2, the first locking part 11 and the second locking part 31 are aligned, securing the stem 1 to the riser 2 without the need for additional tools. This greatly simplifies the installation process and provides greater convenience for the user.

[0050] Furthermore, in this application, the side of the second engaging portion 31 facing the handlebar 1 is configured as a wedge-shaped surface. Specifically, the side of the second engaging portion 31 facing the handlebar 1 is configured to gradually slope towards the handlebar 1 from top to bottom. The wedge-shaped surface can engage with the guide slope 12 of the handlebar 1, allowing the pressure on the second engaging portion 31 to gradually increase smoothly when the handlebar 1 is inserted into the riser 2, thereby improving the stability and smoothness of contact between the handlebar 1 and the second engaging portion 31. It is worth noting that, to ensure good stability of the handlebar 1, when the first engaging portion 11 engages with the second engaging portion 31, the top and bottom of the wedge-shaped side of the second engaging portion 31 should both be located within the first engaging portion 11, ensuring good safety and stability for the handlebar 1.

[0051] In this embodiment, the biasing member 32 is configured as an elastic member, specifically a compression spring, which is mounted on the side of the second latching portion 31 away from the handlebar 1. Therefore, it can be understood that the biasing force provided by the compression spring is located on the side of the second latching portion 31 away from the handlebar 1; specifically, the biasing force is set as a spring force in the direction of the handlebar 1, and the biasing force applied by the biasing member 32 to the second latching portion 31 is a spring force. Of course, this configuration is not absolutely limited.

[0052] In this embodiment, the locator 3 further includes a locator body 33, which is securely mounted on the top of the vertical pipe 2. The locator body 33 not only assembles the second locking part 31 but also guides its movement, ensuring good stability and accuracy during movement. Specifically, a sliding cavity for assembling the second locking part 31 is provided on one side of the locator body 33, providing precise sliding space for the second locking part 31 and forming a sliding connection between the second locking part 31 and the locator body 33, ensuring smooth movement. Furthermore, a spring mounting cavity is provided through the second latching part 31 on the side away from the vertical tube 2 along its direction of movement. The spring mounting cavity is located at the end away from the vertical tube 2 and communicates with the sliding cavity. A sealing plate for sealing the sliding cavity is also provided in the positioner body 33. The sealing plate is located on the opening side of the spring mounting cavity and is fixedly connected to the positioner body 33. Its function is to seal the sliding cavity, prevent the internal components of the positioner body 33 from falling off, and provide a stable support point for the compression spring. The compression spring is installed in the spring mounting cavity, with one end close to the cavity wall of the spring mounting cavity on the side of the spring mounting cavity near the vertical tube 2, and the other end abutting against the sealing plate on the side of the spring mounting cavity away from the vertical tube 2. Through the spring mounting cavity provided inside the second latching part 31, the compression spring can be assembled inside the second latching part 31. Through the above structure, not only is the volume of the positioner body 33 reduced, but the overall structure is also more compact, maximizing space utilization.

[0053] like Figure 2 and Figure 3As shown in this embodiment, the positioner 3 further includes a pull rod 34, which drives the second locking part 31 to move away from the handlebar 1, thereby releasing the locking state between the first locking part 11 and the second locking part 31. Specifically, the second locking part 31 also has a pull rod mounting cavity inside, and the extension direction of the pull rod mounting cavity is consistent with the sliding direction of the second locking part 31. In this application, the pull rod mounting cavity is located on the side of the spring mounting cavity near the vertical tube 2, and the two are interconnected. More specifically, the circumferential sidewall of one end of the pull rod 34 is machined with a threaded structure, and the pull rod 34 is threadedly connected to the second locking part 31. Of course, the fixing method of the pull rod 34 and the second locking part 31 is not limiting. In other embodiments, the pull rod 34 and the second locking part 31 can also be fixed by various methods such as pasting, welding, and integral molding. The end of the pull rod 34 away from the vertical tube 2 passes through the spring mounting cavity, and then extends out from the inside of the positioner body 33 after passing through the closed plate. When the user needs to disassemble the stem 1, the user only needs to apply a force to the lever 34 in the direction away from the vertical tube 2 to make the second locking part 31 retract to the retracted position. At this time, the stem 1 can slide freely along the length of the vertical tube 2, thereby easily achieving the disassembly between the stem 1 and the vertical tube 2.

[0054] like Figure 3 and Figure 4 As shown in the embodiment of this application, the positioner 3 further includes a handle 35 installed at the end of the pull rod 34 that extends from the closed plate. The handle 35 allows the user to more easily apply force to the pull rod 34, thus providing a more convenient operating method. This application does not impose special limitations on the specific structure of the handle; for example, the handle 35 can be configured as a fixed handle and fixedly connected to the pull rod 34 in the horizontal direction. Pulling the fixed handle laterally will apply force to the pull rod 34.

[0055] A preferred embodiment of this application is that the handle is a flip-up handle, which includes:

[0056] The connecting frame 4 includes two side plates 42 and a connecting plate 41. The two side plates 42 are located on both sides of the connecting plate 41 and are integral with the connecting plate 41. The connecting plate 41 is located on the side of the locator body 33 away from the first snap-fit ​​part 11 and is fixedly connected to the locator body 33. Therefore, it can be understood that in this embodiment, the connecting plate 41 is the closed plate mentioned above, and the pull rod 34 extends through the connecting plate 41 and between the two side plates 42.

[0057] Flip plate 5 is rotatably connected to connecting frame 4. Specifically, flip plate 5 is provided with a rotating shaft part 51 and an operating part 52. The operating part 52 is fixedly connected to the rotating shaft part 51. The rotating shaft part 51 is rotatably connected between two side plates 42 in the horizontal direction. The circumferential side wall of the rotating shaft part 51 abuts against the connecting plate 41. A hinge point is provided between the pull rod 34 and the rotating shaft part 51 to realize a hinge structure. The hinge point is located on the rotation axis of the rotating shaft part 51. The distance from the rotation axis to one side wall of the rotating shaft part 51 is not equal to the distance to the other side wall.

[0058] The pin 6 passes through the rotating shaft 51 and the pull rod 34 along the rotation axis of the rotating shaft 51, and can be slidably connected to the side plate 42 along the direction of movement of the second locking part 31. Specifically, both side plates 42 are provided with movable grooves 421 along the direction of movement of the second locking part 31, and both ends of the pin 6 slide within the movable grooves 421.

[0059] Specifically, regarding the structure of the pivot section 51, the circumferential sidewall of the pivot section 51 includes an inwardly moving region 511 for moving the second engaging portion 31 inward toward the inside of the vertical tube 2, and an outwardly moving region 512 for moving the second engaging portion 31 outward toward the outside of the vertical tube 2. The inwardly moving region 511 and the outwardly moving region 512 have a smooth transition. The distance from the rotation axis of the pivot section 51 to the outwardly moving region 512 is greater than the distance to the inwardly moving region 511. Therefore, when the rotating part 515 is rotated, when the outwardly moving region 512 rotates to abut against the connecting frame 4, the pivot section 51 can use the pull rod 34 to drive the second engaging portion 31 away from the stem 1, thereby disengaging it from the first engaging portion 11. At this time, the compression spring can compress and store energy. When the inwardly moving region 511 of the pivot section 51 abuts against the connecting frame 4, the compression spring can release its elastic potential energy, causing the second engaging portion 31 to move toward the stem 1, thereby completing the engagement between the second engaging portion 31 and the first engaging portion 11. The following are two specific implementations of the specific structure of the rotating shaft 51:

[0060] In the first specific embodiment, the outer displacement region 512 and the inner displacement region 511 of the rotating shaft portion 51 form a cam shape, and the outer displacement region 512 is the protrusion of the cam. The rotation axis of the rotating shaft portion 51 is located at its own center.

[0061] In the second specific implementation, the outer displacement region 512 and the inner displacement region 511 of the rotating shaft portion 51 are located on the same arc surface, and the rotation axis of the rotating shaft portion 51 is located on its center line biased towards the inner displacement region 511.

[0062] The above description of the structure of the rotating shaft 51 is merely exemplary, and its specific structure is not limited to this. The ultimate effect that the rotating shaft 51 should achieve is that, during the process of the rotating part 51 rotating from the inner moving area 511 toward the locator body 33 to the outer moving area 512 toward the locator body 33, the distance between its rotation axis and the connecting frame 4 should gradually increase, thereby achieving the purpose of moving the second locking part 31 toward the outside of the vertical tube 2 by the pull rod 34. In this embodiment of the application, the structure of the above-mentioned method two is adopted. When the user needs to adjust the position of the stem 1, the user can easily adjust or disassemble the position of the stem 1 through simple and intuitive operation. Specifically, the user can rotate the operating part 52 to drive the rotating shaft part 51 to rotate. Since the rotation axis of the rotating shaft part 51 is biased towards the inward movement area 511, during the process of rotating the rotating shaft part 51 from the inward movement area 511 to the outward movement area 512, the reaction force when the outward movement area 512 abuts against the connecting frame 4 causes the hinge point to move away from the sliding cavity. The rotating shaft part 51 then drives the second locking part 31 away from the first locking part 11 through the pull rod 34, thereby releasing the fixed state between the handlebar 1 and the vertical tube 2, so that the height of the handlebar 1 can be adjusted or disassembled. When it is necessary to fix the handlebar 1 and the vertical tube 2, simply align the first locking part 11 and the second locking part 31 at a suitable height, rotate the rotating part 51 from the outward movement area 512 to the inward movement area 511, and the second locking part 31 will form a locking with the first locking part 11, thereby fixing the handlebar 1 and the vertical tube 2.

[0063] In this embodiment, when the operating part 52 is vertically downward, the inward moving area 511 of the rotating part 51 faces the locator body 33, and the outward moving area 512 faces upward; when the operating part 52 is horizontal, the inward moving area 511 of the rotating part 51 faces downward, and the outward moving area 512 faces the locator body 33. Therefore, it can be understood that when the operating part 52 is vertically downward, the handle 1 is in a locked state, and when the operating part 52 is horizontal, the handle 1 is in an unlocked state.

[0064] In this embodiment, to further enhance the safety of the stem 1 and the riser 2 in the fixed state, the quick-release stem structure of this application also includes a safety component 7. The safety component 7 is disposed between the operating part 52 and the connecting bracket 4 to lock the flip-up handle. Specifically, the safety component 7 includes a safety bolt 71 and a safety sleeve 72. Through the threaded engagement between the safety bolt 71 and the safety sleeve 72, the stability and safety of the first locking part 11 and the second locking part 31 in the locking state are greatly improved.

[0065] Specifically, the safety nut 72 is fixedly connected to the positioner body 33, the safety bolt 71 passes through the operating part 52 of the flip plate 5 and is rotatably connected to the flip plate 5, and the safety bolt 71 is threadedly connected to the safety nut 72, providing a safety guarantee for the handle 1.

[0066] When the stem 1 and the vertical tube 2 are in a fixed state, and the operating part 52 of the flip plate 5 is rotated to a vertically downward state, the safety bolt 71 and the safety sleeve 72 are just aligned. At this time, tightening the safety bolt 71 not only makes the operation simple, but also ensures that the flip plate 5 cannot rotate unexpectedly, thus providing a solid safety guarantee for the stem 1 in daily use and avoiding safety hazards caused by accidental slippage of the stem 1.

[0067] like Figure 4 and Figure 5 As shown in the embodiment of this application, the locator body 33 includes a base 331 and a base 332. The base 332 is located below the base 331, and the base 332 and the base 331 are detachably connected. In the current embodiment, the base and the base 332 are connected by bolts, but this is not a limitation.

[0068] Furthermore, to achieve relative fixation between the base 332 and the vertical tube 2 in the horizontal direction, a through hole is provided in the middle of the base 332, through which the top of the vertical tube 2 passes. A third locking part 21 is machined on the side wall of the vertical tube 2, and a fourth locking part 3321 is machined on the inner wall of the base 332 at the through hole. Through the locking engagement of the third locking part 21 and the fourth locking part 3321, the base 332 and the vertical tube 2 are relatively fixed in the horizontal direction. Specifically, the third locking part 21 is configured as a locking groove, which is located on the outer side wall of the vertical tube 2, and the fourth locking part 3321 is configured as a locking part that is adapted to engage with the locking groove. The locking part and the base 332 are an integral structure. Of course, this is not a limiting factor.

[0069] Furthermore, in order to achieve relative fixation between the base 332 and the vertical tube 2 in the vertical direction, nuts are threaded onto both the upper and lower sides of the base 332 on the vertical tube 2. By tightening the two nuts, the base 332 cannot move in the vertical direction, thereby effectively ensuring the stability of the base 332.

[0070] In this application, the first snap-fit ​​portion 11 may also be provided in multiple ways along the length of the vertical tube 2. This application does not impose any special restrictions on the specific number of the first snap-fit ​​portions 11, but it is worth noting that each first snap-fit ​​portion 11 should satisfy the condition that when the second snap-fit ​​portion 31 is snapped in, the top and bottom of the second snap-fit ​​portion 31 are both located inside the first snap-fit ​​portion 11.

[0071] In the embodiments of this application, the first engaging portion 11 is configured as a slot, while the second engaging portion 31 is correspondingly configured as a block, forming a snap-fit ​​engagement between the block and the slot. However, this snap-fit ​​structure is not the only option; in fact, the structures of the first engaging portion 11 and the second engaging portion 31 can have various variations. For example, in other embodiments, the first engaging portion 11 can be configured as a tooth structure, while the second engaging portion 31 is correspondingly configured as a tooth, achieving a stable snap-fit ​​engagement through the interlocking of the teeth. Furthermore, the first engaging portion 11 can also be configured as an annular slot, while the second engaging portion can adopt a bead structure, achieving snap-fit ​​fixation through the positioning of the bead in the annular slot.

[0072] like Figure 2 As shown in the embodiment of this application, the quick-release stem structure also includes a shock-absorbing spring 8. The shock-absorbing spring 8 is installed inside the vertical tube 2. After the stem 1 is inserted into the vertical tube 2, the bottom of the stem 1 abuts against the shock-absorbing spring 8. The shock-absorbing spring 8 not only supports the stem 1, but also absorbs shocks.

[0073] In this application embodiment, a bicycle is also provided, which includes the aforementioned stem quick-release structure.

[0074] Other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the embodiments thereof. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A quick-assembly structure, characterized in that, include: The handlebar (1) has a first quick-connect part (11) on its side wall and an insertion end at its bottom. The vertical tube (2) has an opening at the top, and the insertion end of the handle (1) is adapted to be inserted from the opening of the vertical tube (2); Positioner (3), assembled onto the vertical tube (2), the positioner (3) includes a second quick-connect part (31) movable radially along the vertical tube (2) and a biasing member (32) applying a biasing force toward the interior of the vertical tube (2) to the second quick-connect part (31), the second quick-connect part (31) having an extended position extending into the interior of the vertical tube (2) and a retracted position moving radially outward from the interior of the vertical tube (2); During the process of inserting the stem (1) into the vertical tube (2), when the first quick-connect part (11) and the second quick-connect part (31) are aligned, the second quick-connect part (31) moves from the retracted position to the extended position under the biasing force of the biasing member (32) and forms a quick-connect connection with the first quick-connect part (11).

2. The quick-assembly structure according to claim 1, characterized in that, The insertion end is provided with a guide slope (12). When the handle (1) is inserted into the vertical tube (2), the guide slope (12) pushes the second quick-connect part (31) from the extended position to the retracted position.

3. The quick-assembly structure according to claim 2, characterized in that, The end face of the second quick-connect part (31) facing the stem (1) is configured as a wedge-shaped surface that slopes from top to bottom toward the stem (1), and the wedge-shaped surface is used to cooperate with the guide slope (12) when the stem (1) is inserted into the vertical tube (2).

4. The quick-assembly structure according to claim 1, characterized in that, The biasing member (32) is an elastic member assembled on the side of the second quick-connect part (31) away from the stem (1). The biasing force is an elastic force applied by the elastic member to the side of the second quick-connect part (31) away from the stem (1) and toward the stem (1). The elastic member stores energy when the second quick-connect part (31) moves from the extended position to the retracted position, and releases energy when the second quick-connect part (31) is aligned with the first quick-connect part (11), thus pushing the second quick-connect part (31) to move from the retracted position to the extended position.

5. The quick-assembly structure according to claim 4, characterized in that, The locator (3) further includes a locator body (33), which is fixedly mounted on the top of the vertical pipe (2). A sliding cavity for mounting the second quick-connect part (31) is provided on one side of the locator body (33). The second quick-connect part (31) is located in the sliding cavity and is slidably connected to the locator body (33). A spring mounting cavity is provided on the side of the second quick-connect part (31) away from the vertical pipe (2). The elastic element is set as a compression spring. The compression spring is installed in the spring mounting cavity. One end of the compression spring abuts against the cavity wall of the spring mounting cavity near the vertical pipe (2), and the other end abuts against the closed plate on the side of the spring mounting cavity away from the vertical pipe (2).

6. The quick-assembly structure according to claim 5, characterized in that, The positioner (3) also includes a pull rod (34). The second quick-connect part (31) has a pull rod mounting cavity inside. The extension direction of the pull rod mounting cavity is consistent with the sliding direction of the second quick-connect part (31). The pull rod (34) is assembled in the pull rod mounting cavity and the end of the pull rod (34) away from the vertical tube (2) extends out from the closed plate.

7. The quick-assembly structure according to claim 6, characterized in that, The positioner (3) also includes a handle (35) mounted on one end of the pull rod (34) that extends from the end of the enclosure.

8. The quick-assembly structure according to claim 7, characterized in that, The handle (35) is a flip-up handle, and the flip-up handle includes: The connecting bracket (4) is fixedly connected to the side of the locator body (33) away from the first quick-connect part (11); A flap (5) is rotatably connected to the connecting frame (4). The flap (5) is provided with an operating part (52) and a rotating shaft part (51). The operating part (52) is fixedly connected to one side of the rotating shaft part (51). The circumferential sidewall of the rotating shaft part (51) abuts against the side of the connecting frame (4) away from the positioner body (33). The rotation axis of the rotating shaft part (51) is perpendicular to the movement direction of the pull rod (34) in the same horizontal plane. A hinge point for hinged connection between the pull rod (34) and the rotating shaft part (51) is provided. The hinge point is located on the rotation axis of the rotating shaft part (51). The rotation axis of the rotating shaft (51) has different distances from one side wall and the other side wall. When the rotating shaft (51) rotates the side wall farther from the rotation axis toward the positioner body (33), the rotating shaft (51) can drive the second quick-connect part (31) to move away from the stem (1) and compress the compression spring to store energy. When the rotating shaft (51) rotates the side wall closer to the rotation axis toward the positioner body (33), the compression spring releases elastic potential energy, causing the second quick-connect part (31) to move toward the stem (1). The pin (6) passes through the rotating shaft (51) and the pull rod (34) along the rotation axis of the rotating shaft (51) and can be slidably connected to the connecting frame (4) along the moving direction of the second quick-connect part (31).

9. A quick-assembly structure according to claim 8, characterized in that, The circumferential sidewall of the pivot (51) includes an inner moving region for moving the second quick-connect (31) toward the inside of the vertical tube (2) and an outer moving region for moving the second quick-connect (31) toward the outside of the vertical tube (2). The inner moving region and the outer moving region are located on the same arc surface. The distance from the axis of rotation of the pivot (51) to the outer moving region is greater than the distance to the inner moving region. The axis of rotation of the pivot (51) is located on its center line biased toward the inner moving region.

10. A quick-assembly structure according to claim 9, characterized in that, The locator (3) further includes a safety assembly (7) disposed between the operating part (52) and the connecting frame (4) for locking the flap (5); the safety assembly (7) includes: A safety bolt (71) passes through the operating part (52) and is rotatably connected to the operating part (52); The safety nut sleeve (72) is fixedly connected to the connecting bracket (4), and the safety bolt (71) is threadedly connected to the safety nut sleeve (72).

11. A quick-assembly structure according to claim 5, characterized in that, The locator body (33) includes a base (331) and a base (332). The base (332) is located below the base (331). The base (332) and the base (331) are detachably connected. The base (332) has a through hole through which the vertical tube (2) passes. The circumferential sidewall of the vertical tube (2) is provided with a third snap-fit ​​part (21). The base (332) is provided with a fourth snap-fit ​​part (3321) in the through hole. Through the snap-fit ​​cooperation of the third snap-fit ​​part (21) and the fourth snap-fit ​​part (3321), the base (332) and the vertical tube (2) are fixed relative to each other in the horizontal direction.

12. A quick-assembly structure according to any one of claims 1-11, characterized in that, The first quick-connect part (11) is provided with a plurality of parts along the side wall of the handle (1).

13. A quick-release structure according to any one of claims 1-11, characterized in that, The first quick-connect part is a first snap-fit ​​part, and the second quick-connect part is a second snap-fit ​​part, and the first snap-fit ​​part and the second snap-fit ​​part form a snap-fit ​​engagement.

14. A quick-release structure according to any one of claims 1-11, characterized in that, A shock-absorbing spring (8) is installed at the bottom of the vertical tube (2). After the handlebar (1) and the vertical tube (2) are quickly connected, the insertion end at the bottom of the handlebar (1) abuts against the shock-absorbing spring (8).

15. A bicycle, characterized in that, Includes a quick-release handle structure as described in any one of claims 1-14.

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