Rapid handlebar stem adjusting structure and bicycle

Abstract

The utility model provides a rapid handlebar adjusting structure and relates to the technical field of bicycles. The rapid handlebar adjusting structure comprises a handlebar and a vertical pipe, and the inserting end of the bottom of the handlebar is suitable for being inserted from a top opening of the vertical pipe; a first tooth structure is arranged on the side wall of the stem in the vertical direction; the quick stem adjusting structure further comprises a positioner assembled on the vertical pipe, the positioner comprises a position positioning block and a locking structure, the position positioning block can reciprocate in the radial direction of the vertical pipe, and first clamping teeth are arranged at the end, facing the stem, of the position positioning block. The locking structure is arranged to be capable of applying locking force to the side, away from the handlebar stem, of the position positioning block. When the stem is inserted into the expected position of the vertical pipe, the locking structure can apply locking force to the position positioning block to enable the position positioning block to move towards the stem, and the first clamping teeth and the first tooth structure are in clamping fit, so that the stem cannot move in the vertical direction of the vertical pipe. The defect that the height of the stem and the height of the vertical pipe are inconvenient to adjust in the prior art is overcome.

Description

Technical Field

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

[0002] The stem and seat tube of a bicycle are key components for controlling steering. The stem, also known as the handlebars, connects the handlebars to the fork, while the seat tube is the tubular structure on the upper part of the fork that secures the stem. Stems are typically made of aluminum alloy or carbon fiber, making them lightweight and durable. In everyday use, the stem height is usually adjusted to suit the rider's needs, providing optimal handling and comfort.

[0003] In traditional designs, the stem and riser are usually connected by screws and wedge nuts. While this method provides sufficient stability, it requires tools to adjust the stem height. Without suitable tools, the stem height cannot be adjusted. Therefore, traditional designs suffer from the drawback of inconvenient height adjustment between the stem and riser. Utility Model Content

[0004] The purpose of this application is to provide a quick stem adjustment structure and bicycle, aiming to solve the defects of inconvenient stem and seat height adjustment in related technologies.

[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-adjustment stem structure is provided, comprising a stem and a riser, wherein an insertion end at the bottom of the stem is adapted to be inserted from a top opening of the riser;

[0007] The side wall of the handlebar has a first tooth structure in the vertical direction;

[0008] The stem quick adjustment structure also includes a positioner mounted on the vertical tube. The positioner includes a position positioning block and a locking structure. The position positioning block is configured to reciprocate radially along the vertical tube. The end of the position positioning block facing the stem is provided with a first locking tooth. The locking structure is configured to apply a locking force to the side of the position positioning block away from the stem.

[0009] When the stem is inserted into the intended position of the vertical tube, the locking structure can apply the locking force to the positioning block, causing the positioning block to move toward the stem and the first locking tooth to engage with the first tooth structure, so that the stem cannot move vertically in the vertical tube.

[0010] In one exemplary embodiment of this application, the side wall of the handlebar is further provided with a second tooth structure in the vertical direction, and the second tooth structure is offset from the first tooth structure in the circumferential direction of the side wall of the handlebar.

[0011] The positioner also includes an indicator position positioning block and a biasing member that cooperate with the second tooth structure. The indicator position positioning block is configured to move radially toward the stem and away from the stem along the vertical tube. The end of the indicator position positioning block facing the stem is provided with a second locking tooth. The biasing member is configured to apply a biasing force to the side of the indicator position positioning block away from the stem.

[0012] The position indicator block extends into the vertical tube under the biasing force of the biasing member. When the stem overcomes the biasing force and inserts into the vertical tube, the second tooth structure of the stem engages with the second locking tooth of the position indicator block to emit a positioning indication sound.

[0013] In one exemplary embodiment of this application, the positioning indicator sound is configured such that when the positioning indicator sound is emitted, the tip / groove of the first tooth of the position positioning block is aligned with the groove / tip of the first tooth structure of the handle in the direction of movement of the position positioning block.

[0014] In one exemplary embodiment of this application, the first tooth structure and the second tooth structure are tooth structures integrally machined on the side wall of the stem.

[0015] In one exemplary embodiment of this application, the locking structure is located on the side of the position positioning block away from the handlebar stem. The locking structure includes a protruding portion and a non-protruding portion. The locking structure has a locked position and an unlocked position. In the locked position, the protruding portion faces the position positioning block and applies the locking force to push the position positioning block toward the handlebar stem so that the first locking tooth engages with the first tooth structure. In the unlocked position, the non-protruding portion faces the position positioning block and there is a movable gap between the non-protruding portion and the position positioning block, and the position positioning block can move within the movable gap.

[0016] In one exemplary embodiment of this application, the locking structure includes a rotating part and an operating part. The rotating part and the operating part are fixedly connected or integrally formed. The rotation axis of the rotating part is perpendicular to the moving direction of the position positioning block in the same horizontal plane. The protruding part and the non-protruding part are both disposed on the circumferential sidewall of the rotating part. The operating part is used to operate the rotating part to rotate.

[0017] In one exemplary embodiment of this application, the biasing member is a compression spring assembled on the side of the indicating position positioning block away from the handlebar, and the biasing force is the elastic force applied by the compression spring to the side of the indicating position positioning block away from the handlebar and toward the handlebar direction.

[0018] In an exemplary embodiment of this application, the locator further includes a locator body, which is fixedly sleeved on the top of the vertical tube. A first sliding cavity for assembling the position positioning block is provided on one side of the locator body. The position positioning block is reciprocally disposed in the first sliding cavity. The locking structure is installed on the locator body on the side of the position positioning block away from the handlebar.

[0019] The locator body has a second sliding cavity offset from the first sliding cavity in the circumferential direction. The indicating position positioning block is reciprocally disposed in the second sliding cavity. The compression spring is assembled on the side of the indicating position positioning block away from the handlebar. One end of the compression spring abuts against the end of the indicating position positioning block away from the handlebar, and the other end abuts against the closed plate on the side of the second sliding cavity away from the handlebar.

[0020] In one exemplary embodiment of this application, the locator further includes a safety component disposed between the operating part and the locator body for locking the operating part to the locked position.

[0021] In one exemplary embodiment of this application,

[0022] The operating part is a flip-out handle. When the handle is flipped to the horizontal position, the handle and the rotating part are in the unlocked position. When the handle is flipped to the vertical position, the handle and the rotating part are in the locked position. The handle is provided with a through hole.

[0023] The insurance component includes:

[0024] A safety nut is fixedly mounted on the positioner body, and the position of the safety nut is aligned with the through hole on the handle when it is flipped to the vertical position;

[0025] A safety bolt, when the handle is flipped to the vertical position, passes through the through hole of the handle and is tightened into the safety nut to lock the handle onto the positioner body.

[0026] In one exemplary embodiment of this application, the cross-section of the handle is adapted to the cross-section of the cavity inside the vertical tube and both are non-circular.

[0027] In one exemplary embodiment of this application, the side wall of the handle and the cavity wall of the vertical tube are provided with at least a pair of positioning edges for aligning the two in the circumferential direction at a preset position.

[0028] In one exemplary embodiment of this application, the locator body further includes a base and a base. The first sliding cavity and the second sliding cavity are both formed on the base. The base is located below the base and is detachably connected to the base. The base has a through hole adapted to the shape of the outer wall of the vertical tube. The vertical tube passes through the through hole. A first positioning part is provided on the circumferential side wall of the vertical tube. The base has a second positioning part in the through hole that is adapted to engage with the first positioning part. Through the engaging cooperation between the first positioning part and the second positioning part, the base and the vertical tube are relatively fixed in the horizontal direction.

[0029] 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.

[0030] According to a second aspect of this application, a bicycle is provided, comprising a stem quick-adjustment structure as described in any of the preceding claims.

[0031] The exemplary embodiments of this application may have some or all of the following beneficial effects:

[0032] In the stem quick-adjustment structure provided in the example embodiment of this application, the stem is inserted into the riser and slid along the length of the riser until a certain position of the first tooth structure on the stem aligns with the first tooth on the positioning block. Then, a locking structure causes the positioning block to move towards the first tooth structure until the two are tightly engaged. In the engaged state, the locking structure effectively restricts further movement of the positioning block, ensuring a stable connection between the positioning block and the first tooth structure, thereby fixing the stem to the positioner. Given the fixed connection between the positioner body and the riser, this operation directly achieves a stable lock between the stem and the riser. Simply releasing the locking structure allows the stem to slide freely. While sliding the stem, another position of the first tooth structure can be aligned with the positioning block again. At this point, the locking structure is used again to re-engage and fix the positioning block to the first tooth structure, thus easily adjusting the stem height. This structure simplifies the stem height adjustment process, eliminating the need for additional tools and providing users with flexible adjustment of the height between the stem and the riser.

[0033] 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

[0034] 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.

[0035] Figure 1 This paper shows an overall schematic diagram of a quick-adjustment stem structure according to an embodiment of the present application;

[0036] Figure 2 A cross-sectional view of a quick-adjustment structure for the handlebars is shown in an embodiment of this application;

[0037] Figure 3 It shows Figure 2 Enlarged view of section A;

[0038] Figure 4 A partial schematic diagram of the connection relationship between the handle and the vertical tube in an embodiment of this application is shown;

[0039] Figure 5 A partial schematic diagram of the installation relationship between the base and the vertical tube in an embodiment of this application is shown.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Stem; 11. First tooth structure; 12. Second tooth structure; 2. Vertical tube; 21. First positioning part; 3. Position positioning block; 31. First locking tooth; 4. Locking structure; 41. Protrusion; 42. Non-protrusion; 43. Rotating part; 44. Operating part; 5. Indicating position positioning block; 51. Second locking tooth; 6. Biasing component; 7. Positioner body; 71. Base; 72. Base; 721. Second positioning part; 8. Safety assembly; 81. Safety nut; 82. Safety bolt; 9. Shock-absorbing spring. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] like Figure 1 and Figure 2 As shown in the embodiment of this application, a quick-adjustment 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. The side wall of the stem 1 is provided with a first tooth structure 11 in the vertical direction.

[0046] The stem quick adjustment structure also includes a positioner mounted on the vertical tube 2. The positioner includes a position positioning block 3 and a locking structure 4. The position positioning block 3 is configured to reciprocate along the radial direction of the vertical tube 2. The position positioning block 3 has a first locking tooth 31 at one end facing the stem 1. The locking structure 4 is configured to apply a locking force to the side of the position positioning block 3 away from the stem 1.

[0047] When the handlebar 1 is inserted into the intended position of the vertical tube 2, the locking structure 4 can apply the locking force to the position positioning block 3, causing the position positioning block 3 to move toward the handlebar 1 and the first locking tooth 31 to engage with the first tooth structure 11, so that the handlebar 1 cannot move vertically in the vertical tube 2.

[0048] In this embodiment, the handlebar 1 can slide along the length of the vertical tube 2, allowing it to be adjusted to the desired position according to the user's needs. During adjustment, the locking structure 4 does not apply a locking force to the positioning block 3. Therefore, when the first tooth structure 11 on the handlebar 1 and the first locking tooth 31 on the positioning block 3 come into contact at their tips, the positioning block 3 can move flexibly in a direction away from the first tooth structure 11, ensuring smooth adjustment of the handlebar 1. Once the user adjusts the handlebar 1 to the desired position, the locking structure 4 applies a locking force to the side of the positioning block 3 away from the handlebar 1, causing the positioning block 3 to move towards the first tooth structure 11 and engage with it, achieving a stable fixation. At this point, a relatively fixed state is formed between the handlebar 1 and the vertical tube 2, ensuring stability and safety for the user during use.

[0049] The above structure ensures good stability between the adjusted stem 1 and the vertical tube 2, preventing loosening or wobbling during use and thus improving the safety of the stem 1. Furthermore, the user can use the locking structure 4 to engage the position positioning block 3 with different positions of the first tooth structure 11, thereby adjusting the height between the stem 1 and the vertical tube 2. This eliminates the need for auxiliary tools when adjusting the stem 1, simplifying the adjustment process and providing greater convenience for the user.

[0050] In this embodiment, to improve the damping feel during the sliding process of the stem 1, and thus assist the user in accurately aligning the groove of the first tooth structure 11 with the tooth tip of the positioning block 3, a second tooth structure 12 is also provided vertically on the side wall of the stem 1. The second tooth structure 12 is offset from the first tooth structure 11 in the circumferential direction of the side wall of the stem 1. In this application, the first tooth structure 11 and the second tooth structure 12 are positioned opposite each other on both sides of the stem 1, but this is not a limitation. However, it is worth noting that the dimensions of the first tooth structure 11 and the second tooth structure 12 should be exactly the same, and their tooth tips should be aligned in the circumferential direction of the stem 1, and their tooth grooves should also be aligned in the circumferential direction of the stem 1.

[0051] Furthermore, the positioner also includes an indicating position positioning block 5 and a biasing member 6 that cooperate with the second tooth structure 12. The indicating position positioning block 5 can move radially towards the handlebar 1 along the riser tube 2, and can also move away from the handlebar 1. The end of the indicating position positioning block 5 facing the handlebar 1 is provided with a second locking tooth 51, which engages and adapts with the second tooth structure 12. The biasing member 6 can apply a biasing force to the side of the indicating position positioning block 5 away from the handlebar 1, so that the indicating position positioning block 5 can extend into the interior of the riser tube 2 under the biasing force applied by the biasing member 6.

[0052] When the stem 1 is inserted into the riser tube 2, as the tips of the second tooth structure 12 and the tips of the second locking teeth 51 gradually align, the force exerted by the second tooth structure 12 on the position indicator block 5 on the stem 1 exceeds the biasing force of the biasing member 6, causing the position indicator block 5 to move away from the stem 1. When the tips of the second locking teeth 51 are precisely aligned with the tooth grooves, the position indicator block 5 can move towards the stem 1 under the biasing force, achieving the engagement of the second locking teeth 51 and the second tooth structure 12. This process initially fixes the stem 1 and triggers a "click" positioning indicator sound, providing the operator with intuitive auditory feedback.

[0053] Therefore, when the user hears a crisp "click" sound while adjusting the stem 1, it means that the tip of the first tooth structure 11 and the groove of the first locking tooth 31 have been aligned in the direction of movement. At the same time, the groove of the first tooth structure 11 and the joint of the first locking tooth 31 are also aligned in the direction of movement. This ensures accurate positioning and convenient operation.

[0054] Furthermore, the friction between the second locking tooth 51 and the second tooth structure 12 creates a damping sensation when the stem 1 slides within the vertical tube 2. When the second locking tooth 51 and the second tooth structure 12 are engaged, the stem 1 achieves a preliminary fixing effect. Even without applying external force, the stem 1 can maintain a stable state, providing convenience for the user to adjust the position positioning block 3, thereby simplifying and optimizing the fixing operation of the stem 1.

[0055] In this embodiment, the first tooth structure 11 and the second tooth structure 12 are integrally machined onto the side wall of the stem 1. This method not only ensures precise alignment of the first tooth structure 11 and the second tooth structure 12 on the circumferential surface of the stem 1, but also simplifies the machining process of the stem 1, improving production efficiency and cost-effectiveness. Of course, this is not limiting; the first tooth structure 11 and the second tooth structure 12 can also be fixed to the side wall of the stem 1 in other ways, such as by welding to firmly install the rack with the first tooth structure 11 and the second tooth structure 12 onto the side wall of the stem 1.

[0056] In this application, the locking structure 4 is located on the side of the position positioning block 3 opposite to the first tooth structure 11. By changing the state of the locking structure 4 through intuitive and convenient operation, the position positioning block 3 can be fixed and unlocked. The locking structure 4 includes a protrusion 41 and a non-protrusion 42; the locking structure 4 also has a locked position and an unlocked position.

[0057] Specifically, in the locked position, the protrusion 41 is located on the side facing the position positioning block 3, applying a locking force to the position positioning block 3 and pushing it to move towards the handlebar 1, ensuring that the first locking tooth 31 and the first tooth structure 11 achieve a stable locking engagement, and preventing the position positioning block 3 from moving, thereby achieving the locked state. In the unlocked position, the non-protrusion 42 is located on the side facing the position positioning block 3, forming a movable gap between the two, allowing the position positioning block 3 to move freely within the movable gap.

[0058] Therefore, once the user adjusts the stem 1 to the desired position, they only need to adjust the protrusion 41 to face the position positioning block 3. At this time, the position positioning block 3 is locked, and the first locking tooth 31 and the first tooth structure 11 are engaged, thus fixing the stem 1. When the user needs to adjust the height of the stem 1 or disassemble the stem 1, they only need to adjust the non-protrusion 42 to face the position positioning block 3. At this time, the position positioning block 3 will be unlocked. When the user slides the stem 1, the tip of the first tooth structure 11 gradually abuts against the tooth joint of the first locking tooth 31, which automatically moves the position positioning block 3 towards the movable gap, allowing the stem 1 to move smoothly.

[0059] Furthermore, the locking structure 4 includes a rotating part 43 and an operating part 44, which are tightly connected in a relatively fixed manner to ensure operational stability and reliability. The connection between the rotating part 43 and the operating part 44 can be achieved through various methods, such as bonding or welding, or by using integrated processing technology to fuse them into a single unit, ensuring structural robustness and ease of operation. The rotation axis of the rotating part 43 is perpendicular to the movement direction of the positioning block 3 on the horizontal plane, ensuring that the rotating part 43 can precisely control the movement of the positioning block 3 when rotating. Both the protruding part 41 and the non-protruding part 42 are provided on the circumferential sidewall of the rotating part 43.

[0060] In actual operation, the user only needs to hold the operating part 44 to easily rotate the rotating part 43. When the protrusion 41 of the rotating part 43 rotates to face the positioning block 3, it can precisely push the positioning block 3 towards the first tooth structure 11, causing the first locking tooth 31 to tightly engage with the first tooth structure 11, achieving a stable fixing effect. At this time, the positioning block 3 is locked and cannot move freely, thus ensuring a firm connection between the stem 1 and the vertical tube 2. Conversely, when the non-protrusion 42 of the rotating part 43 rotates to face the positioning block 3, a gap is formed between the positioning block 3 and the non-protrusion 42, allowing the positioning block 3 to move freely between the first tooth structure 11 and the non-protrusion 42, thus easily releasing the fixing of the positioning block 3 and unlocking it. This allows the stem 1 to be height-adjusted along the length of the vertical tube 2, providing the user with great convenience and flexibility.

[0061] In this embodiment, when the operating part 44 is rotated to the vertically downward position, the protrusion 41 is positioned precisely on the side facing the positioning block 3. This state clearly indicates that the stem 1 is in a locked state, ensuring a stable connection between the stem 1 and the vertical tube 2, providing a safe and reliable guarantee for the user. Conversely, when the operating part 44 is rotated to the horizontal state, the non-protrusion 42 turns towards the positioning block 3, at which point the stem 1 is in an unlocked state, allowing the user to easily adjust the height of the stem 1 according to personal needs, adding more flexibility and comfort to the user experience. It is worth noting that the above operating method is not the only option; users can explore more personalized operating modes according to their actual needs and habits to achieve the best user experience.

[0062] In this embodiment, the biasing element 6 is configured as a compression spring, and the indicating position positioning block 5 has a spring mounting cavity on the side opposite to the stem 1, with the compression spring assembled within the spring mounting cavity. Therefore, it can be understood that the biasing force provided by the compression spring is located on the side of the indicating position positioning block 5 away from the stem 1. Specifically, the biasing force is set as a spring force towards the stem 1, and the biasing force applied by the biasing element 6 to the indicating position positioning block 5 is a spring force. Of course, this configuration is not absolutely limited.

[0063] In this embodiment, the locator further includes a locator body 7, which is fixed relative to the top of the vertical tube 2, ensuring the stability and reliability of the overall structure. The handlebar 1 passes through the locator body 7 and is slidably connected to the locator body 7 along the vertical direction, allowing the handlebar 1 to slide freely in the vertical direction. The locator body 7 has a first sliding cavity and a second sliding cavity inside, which are offset from each other in the circumferential direction.

[0064] The positioning block 3 is located in the first sliding cavity and can slide back and forth within the first sliding cavity. The locking structure 4 is installed on the positioner body 7 on the side of the positioning block 3 facing away from the handlebar 1. The first sliding cavity provides precise sliding space for the positioning block 3, forming a sliding connection between the positioning block 3 and the positioner body 7, ensuring its smooth movement.

[0065] The position indicator block 5 is located within the second sliding cavity and can reciprocate within it. A sealing plate for blocking the second sliding cavity is also provided in the positioner body 7. The sealing plate is located on the side of the compression spring away from the position indicator block 5 and is fixedly connected to the positioner body 7. Its function is to seal the second sliding cavity, preventing the second position indicator block and compression spring from falling off. Simultaneously, one end of the compression spring abuts against the end of the position indicator block 5 away from the handlebar stem 1, and the other end abuts against the sealing plate on the side of the second sliding cavity away from the handlebar stem 1. The sealing plate provides a stable support point for the compression spring. The second sliding cavity provides precise sliding space for the position indicator block 5, forming a sliding connection between the position indicator block 5 and the positioner body 7, ensuring smooth movement.

[0066] In this embodiment, in order to further improve the safety of the stem 1 and the upright tube 2 in the fixed state and prevent instability caused by the accidental rotation of the locking structure 4, the stem quick adjustment structure in this application also includes a safety component 8; the safety component 8 includes a safety sleeve 81 and a safety bolt 82. Through the threaded engagement between the safety sleeve 81 and the safety bolt 82, the stability and safety of the position positioning block 3 and the first tooth structure 11 in the snap-fit ​​state are improved.

[0067] Furthermore, the operating part 44 is regarded as a flip-up handle. When the handle is flipped to the horizontal position, the handle and the rotating part 43 are in the unlocked position. When the handle is flipped to the vertical position, the handle and the rotating part 43 are in the locked position. The handle is provided with a through hole.

[0068] Specifically, the safety nut 81 is fixedly connected to the positioner body 7, the safety bolt 82 passes through the through hole on the handle and is rotatably connected to the handle, and the safety bolt 82 is threadedly connected to the safety nut 81, providing a safety guarantee for the stem 1.

[0069] When the stem 1 and the vertical tube 2 are in a fixed state, and the operating part 44 of the locking structure 4 is rotated to a vertical state, the safety bolt 82 and the safety sleeve 81 are aligned. At this time, tightening the safety bolt 82 is not only simple to operate, but also ensures that the locking structure 4 cannot be rotated accidentally, 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.

[0070] In this embodiment, the cross-section of the stem 1 is adapted to the cross-section of the cavity inside the riser 2, and both are non-circular. This avoids the first tooth structure 11 and / or the second tooth structure 12 of the stem 1 from shifting relative to the first locking tooth 31 and / or the second locking tooth 51 due to rotation during installation, thereby improving the accuracy of the position of the stem 1 and the riser 2 during installation.

[0071] To further ensure the accuracy of the position of the handle 1 when inserted into the vertical tube 2, at least one pair of positioning edges are provided on the side wall of the handle 1 and the cavity wall of the vertical tube 2 for aligning the two in a preset position in the circumferential direction. It is understood that when the positioning edge of the handle 1 is aligned with the positioning edge of the vertical tube 2 and inserted, the first tooth structure 11 is positioned towards the position positioning block 3, while the second tooth structure 12 is positioned towards the position indicating positioning block 5. In this embodiment, the cross-section of the handle 1 and the cross-section of the cavity inside the vertical tube 2 are both set as square structures with chamfered sides. However, this is not limiting; the cross-section of the handle 1 and the cross-section of the cavity inside the vertical tube 2 can also be semi-circular, polygonal, or irregular, etc.

[0072] In this embodiment, the locator body 7 includes a base 71 and a base 72. The base 72 is located below the base 71, and the base 72 and the base 71 are detachably connected. In the current embodiment, the base 71 and the base 72 are connected by bolts, but this is not a limitation.

[0073] Furthermore, to achieve relative fixation between the base 72 and the vertical tube 2 in the horizontal direction, a through hole is provided in the middle of the base 72, through which the top of the vertical tube 2 passes. A first positioning part is machined on the side wall of the vertical tube 2, and a second positioning part is machined on the inner wall of the base 72 at the through hole. The base 72 and the vertical tube 2 are relatively fixed in the horizontal direction through the snap-fit ​​engagement of the first positioning part and the second positioning part. Specifically, the first positioning part is configured as a snap-fit ​​groove located on the outer side wall of the vertical tube 2, and the second positioning part is configured as a snap-fit ​​part that engages with the snap-fit ​​groove. The snap-fit ​​part and the base 72 are an integral structure. Of course, this is not a limiting factor.

[0074] Furthermore, in order to achieve relative fixation between the base 72 and the vertical tube 2 in the vertical direction, nuts are threaded onto both the upper and lower sides of the base 72 on the vertical tube 2. By tightening the two nuts, the base 72 cannot move in the vertical direction, thereby effectively ensuring the stability of the base 72.

[0075] In this embodiment of the application, the quick adjustment structure of the stem also includes a shock-absorbing spring 9. The shock-absorbing spring 9 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 9. The shock-absorbing spring 9 not only supports the stem 1, but also absorbs shocks.

[0076] In this embodiment of the application, a bicycle is also provided, which includes the aforementioned stem quick-adjustment structure.

[0077] 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-adjustment structure for the handlebar, characterized in that, Includes a stem (1) and a riser (2), wherein the insertion end at the bottom of the stem (1) is adapted to be inserted from the top opening of the riser (2); The side wall of the handle (1) is provided with a first tooth structure (11) in the vertical direction; The stem quick adjustment structure also includes a positioner mounted on the vertical tube (2). The positioner includes a position positioning block (3) and a locking structure (4). The position positioning block (3) is configured to reciprocate along the radial direction of the vertical tube (2). The position positioning block (3) has a first locking tooth (31) at one end facing the stem (1). The locking structure (4) is configured to apply a locking force to the side of the position positioning block (3) away from the stem (1). When the stem (1) is inserted into the intended position of the vertical tube (2), the locking structure (4) can apply the locking force to the position positioning block (3) to move the position positioning block (3) toward the stem (1) and the first locking tooth (31) engages with the first tooth structure (11) so that the stem (1) cannot move vertically in the vertical tube (2).

2. The quick-adjustment structure for the handlebar according to claim 1, characterized in that, The side wall of the handlebar (1) is also provided with a second tooth structure (12) in the vertical direction. The second tooth structure (12) is offset from the first tooth structure (11) in the circumferential direction of the side wall of the handlebar (1). The positioner also includes an indicator position positioning block (5) and a biasing member (6) that cooperate with the second tooth structure (12). The indicator position positioning block (5) is configured to move radially toward the stem (1) and away from the stem (1) along the vertical tube (2). The end of the indicator position positioning block (5) facing the stem (1) is provided with a second locking tooth (51). The biasing member (6) is configured to apply biasing force to the side of the indicator position positioning block (5) away from the stem (1). The position indicator block (5) extends into the vertical tube (2) under the biasing force of the biasing member (6). When the handlebar (1) overcomes the biasing force and inserts into the vertical tube (2), the second tooth structure (12) of the handlebar (1) cooperates with the second locking tooth (51) of the position indicator block (5) to emit a positioning indication sound.

3. The quick-adjustment structure for the handlebar according to claim 2, characterized in that, The positioning indicator sound is set such that when the positioning indicator sound is emitted, the tip / groove of the first tooth (31) of the position positioning block (3) is aligned with the groove / tip of the first tooth structure (11) of the stem (1) in the moving direction of the position positioning block (3).

4. The quick-adjustment structure for the handlebar according to claim 3, characterized in that, The first tooth structure (11) and the second tooth structure (12) are tooth structures integrally machined on the side wall of the stem (1).

5. A quick-adjustment stem structure according to any one of claims 2-4, characterized in that, The locking structure (4) is located on the side of the position positioning block (3) away from the stem (1). The locking structure (4) includes a protrusion (41) and a non-protrusion (42). The locking structure (4) has a locked position and an unlocked position. In the locked position, the protrusion (41) faces the position positioning block (3) and applies the locking force to push the position positioning block (3) toward the stem (1) so that the first locking tooth (31) engages with the first tooth structure (11). In the unlocked position, the non-protrusion (42) faces the position positioning block (3) and there is a movable gap between the non-protrusion (42) and the position positioning block (3). The position positioning block (3) can move within the movable gap.

6. The quick-adjustment structure for the handlebar according to claim 5, characterized in that, The locking structure (4) includes a rotating part (43) and an operating part (44). The rotating part (43) and the operating part (44) are fixedly connected or integral. The rotation axis of the rotating part (43) is perpendicular to the moving direction of the position positioning block (3) in the same horizontal plane. The protruding part (41) and the non-protruding part (42) are both provided on the circumferential sidewall of the rotating part (43). The operating part (44) is used to operate the rotating part (43) to rotate.

7. The quick-adjustment structure for the handlebar according to claim 6, characterized in that, The biasing element (6) is a compression spring mounted on the side of the indicating position positioning block (5) away from the stem (1), and the biasing force is the elastic force applied by the compression spring to the side of the indicating position positioning block (5) away from the stem (1) and toward the stem (1).

8. The quick-adjustment structure for the handlebar according to claim 7, characterized in that, The locator also includes a locator body (7), which is fixedly sleeved on the top of the vertical tube (2). A first sliding cavity for assembling the position positioning block (3) is opened on one side of the locator body (7). The position positioning block (3) is reciprocally disposed in the first sliding cavity. The locking structure (4) is installed on the locator body (7) on the side of the position positioning block (3) away from the handlebar (1). The locator body (7) has a second sliding cavity at a position offset from the first sliding cavity in the circumferential direction. The indicating position positioning block (5) is reciprocally disposed in the second sliding cavity. The compression spring is assembled on the side of the indicating position positioning block (5) away from the handlebar (1). One end of the compression spring abuts against the end of the indicating position positioning block (5) away from the handlebar (1), and the other end abuts against the closed plate on the side of the second sliding cavity away from the handlebar (1).

9. The quick-adjustment structure for the handlebar according to claim 8, characterized in that, The locator also includes a safety component (8) disposed between the operating part (44) and the locator body (7) for locking the operating part (44) to the locked position.

10. A quick-adjustment structure for the handlebar according to claim 9, characterized in that, The operating part (44) is a flip-out handle. When the handle is flipped to the horizontal position, the handle and the rotating part (43) are in the unlocked position. When the handle is flipped to the vertical position, the handle and the rotating part (43) are in the locked position. The handle is provided with a through hole. The insurance component (8) includes: A safety nut (81) is fixedly mounted on the positioner body (7), and the position of the safety nut (81) is aligned with the through hole on the handle when it is flipped to the vertical position; The safety bolt (82) is screwed into the safety sleeve (81) through the through hole of the handle when the handle is flipped to the vertical position, so as to lock the handle onto the positioner body (7).

11. A quick-adjustment stem structure according to any one of claims 1-4, characterized in that, The cross-section of the stand (1) is adapted to the cross-section of the cavity inside the vertical tube (2) and both are non-circular.

12. The quick-adjustment structure for the handlebar according to claim 11, characterized in that, The side wall of the handle (1) and the cavity wall of the vertical tube (2) are provided with at least a pair of positioning edges for aligning the two in a preset position in the circumferential direction.

13. The quick-adjustment structure for the handlebar according to claim 8, characterized in that, The locator body (7) also includes a base (71) and a base (72). The first sliding cavity and the second sliding cavity are both formed on the base (71). The base (72) is located below the base (71). The base (72) is detachably connected to the base (71). The base (72) has a through hole that matches the shape of the outer wall of the vertical tube (2). The vertical tube (2) passes through the through hole. The circumferential side wall of the vertical tube (2) is provided with a first positioning part (21). The base (72) has a second positioning part (22) in the through hole that is compatible with the first positioning part (21). Through the engagement of the first positioning part (21) and the second positioning part (22), the base (72) and the vertical tube (2) are fixed relative to each other in the horizontal direction.

14. A quick-adjustment stem structure according to any one of claims 1-4, characterized in that, A shock-absorbing spring (9) 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 (9).

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

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