Brake handle, handlebar assembly and vehicle

Abstract

The application relates to a brake handle, a handlebar assembly and a vehicle. The brake handle comprises a shell, a handle body and a transmission part; the handle body is located outside the shell and is hinged to the shell through a connecting piece; the transmission part is arranged in the shell and is provided with a winding reel; the transmission part is in transmission cooperation with the handle body, so that when the handle body rotates, the transmission part can drive the winding reel to rotate; the transmission cooperation position of the transmission part and the handle body is adjustable, so as to adjust the pinch distance of the handle body and the handlebar. Before the vehicle drives, a driver can adjust the transmission cooperation position of the transmission part and the handle body according to the size of the driver's hand, so as to adjust the pinch distance of the handle body and the handlebar, so that the pinch distance of the handle body and the handlebar is matched with the size of the hand, the driver can easily pinch the brake handle, and the needs of different drivers for the most suitable pinch distance can be met.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a brake lever, handlebar assembly, and vehicle. Background Technology

[0002] Brake levers are essential components of vehicles such as electric bikes and bicycles, used to reduce speed or bring the vehicle to a stop. During operation, drivers typically engage the brake levers to adjust speed in real-time to cope with different road conditions. However, due to differences in hand size, the ease of gripping the brake lever varies among drivers, which can negatively impact the user experience for some, especially those with smaller or larger hands. Summary of the Invention

[0003] Therefore, it is necessary to provide a brake lever, a handlebar assembly, and a vehicle to address the aforementioned technical problems.

[0004] A brake lever includes: a housing, a lever body, and a transmission component;

[0005] The handle body is located outside the housing and is hinged to the housing via a connector;

[0006] The transmission component is disposed within the housing and is provided with a winding reel. The transmission component is in transmission cooperation with the handlebar body so that when the handlebar body rotates, the transmission component can drive the winding reel to rotate. The transmission cooperation position between the transmission component and the handlebar body is adjustable to adjust the gripping distance between the handlebar body and the handlebar.

[0007] In one embodiment, the transmission component includes a rotatable first transmission wheel, a rotatable second transmission wheel, and a transmission belt tensioned between the first transmission wheel and the second transmission wheel. The transmission belt is in transmission engagement with the handle body, and the transmission engagement surface between the transmission belt and the handle body is arranged along the rotation direction of the handle body.

[0008] The winding reel is mounted on the shaft of the first transmission wheel.

[0009] In one embodiment, the first drive wheel and / or the second drive wheel are gears, and the drive belt is a toothed drive belt that meshes with the gear.

[0010] In one embodiment, a support portion is further provided inside the housing to support the transmission belt so that the transmission mating surface between the transmission belt and the handle body moves in the rotation direction of the handle body.

[0011] In one embodiment, the handle body is provided with an outer tube and an inner shaft at one end near the housing. The inner shaft is slidably disposed on the outer tube until it cooperates with the outer tube to clamp or release the transmission component.

[0012] In one embodiment, the outer tube has a clamping part at one end extending into the housing, and the inner shaft has a pressing part at one end extending into the housing. A clamping cavity for clamping the transmission component is provided between the clamping part and the pressing part.

[0013] In one embodiment, a first limiting portion is provided at the end of the inner shaft away from the housing, and the outer tube has a limiting hole that cooperates with the first limiting portion, the limiting hole being provided along the sliding direction of the inner shaft.

[0014] In one embodiment, the brake handle further includes a second limiting part and a threaded sleeve. The second limiting part is fixed to the outer tube and abuts against the outer wall of the housing. The threaded sleeve is threadedly connected to the outer tube. When the inner shaft and the outer tube clamp the transmission component, the first limiting part abuts against the space between the second limiting part and the threaded sleeve.

[0015] In one embodiment, the brake handle further includes a protective sleeve, which is movably fitted onto one end of the outer tube located outside the housing. The threaded sleeve, the first limiting portion, and the second limiting portion are located inside the protective sleeve, wherein the protective sleeve can slide onto the handle body to expose the threaded sleeve.

[0016] In one embodiment, the brake lever further includes an elastic element disposed between the housing and the winding spool, the elastic element being used to provide a resetting force to the winding spool.

[0017] A handlebar assembly comprising a handlebar and a brake lever as described in any of the preceding claims, the housing of the brake lever being disposed on the handlebar.

[0018] A vehicle includes a frame, wheels, brake cables, and a handlebar assembly as described above, wherein the wheels and the handlebar assembly are mounted on the frame, one end of the brake cable engages with the wheel, and the other end of the brake cable is connected to a spool of the handlebar assembly.

[0019] Before driving, the driver can adjust the transmission mechanism and grip position of the handlebar body according to their hand size using the aforementioned brake lever, handlebar assembly, and vehicle. This adjusts the grip distance between the handlebar body and the handlebar, ensuring the grip distance matches the driver's hand size and facilitates a comfortable grip on the brake lever. Therefore, the brake lever of this application features an adjustable grip distance between the handlebar body and the handlebar, meeting the needs of different drivers for the optimal grip distance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a handlebar assembly provided in an embodiment of this application.

[0021] Figure 2 This is a three-dimensional structural diagram of a handlebar assembly that shows the internal structure of the housing, provided as an embodiment of this application.

[0022] Figure 3 This is a top view of a handlebar assembly that shows the internal structure of the housing, provided as an embodiment of this application.

[0023] Figure 4 This is a three-dimensional structural diagram of a handlebar assembly provided in an embodiment of this application, including some of its components.

[0024] Figure 5 for Figure 4 A magnified view of a portion at point A.

[0025] Figure 6 This is a schematic diagram of the internal structure of a shell provided in an embodiment of this application.

[0026] Figure 7 This is a schematic diagram of the structure of the end of the handle body near the housing provided in an embodiment of this application, with the transmission component not clamped.

[0027] Figure 8 This is an exploded view of the end of the handle body near the housing, as provided in an embodiment of this application.

[0028] Figure 9 This is a structural schematic diagram of a handle body from another angle, provided as an embodiment of this application.

[0029] Figure 10 for Figure 9 The provided cross-sectional view of the handle body in the BB direction.

[0030] The labels in the attached diagram are explained as follows:

[0031] 10. Brake lever; 100. Housing; 100a. Clearance hole; 110. Connector; 120. Support part; 130. Mounting post; 140. Fixing bracket; 200. Handle body; 210. Outer tube; 211. Clamping part; 210a. Limiting hole; 220. Inner shaft; 221. Pressing part; 222. First limiting part; Q. Clamping cavity; 300. Transmission component; 310. First transmission wheel; 320. Second transmission wheel; 330. Transmission belt; 330a. Transmission part; 400. Second limiting part; 500. Screw sleeve; 600. Protective sleeve; 600a. Large diameter cavity; 600b. Small diameter cavity; 700. Elastic component; 800. Winding reel; 20. Handlebar; 30. Brake cable. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] See Figures 1 to 3 One embodiment of this application provides a brake handle 10, which includes a housing 100, a handle body 200, and a transmission member 300. The handle body 200 is located outside the housing 100 and is hinged to the housing 100 via a connector 110. The transmission member 300 is disposed inside the housing 100 and has a winding reel 800. The transmission member 300 is in a transmission engagement with the handle body 200 so that when the handle body 200 rotates, the transmission member 300 can drive the winding reel 800 to rotate. It should be noted that, in order to show the transmission member 300 inside the housing 100, Figure 2 and Figure 3 The casing 100 in the middle has been decapped.

[0039] The brake lever 10 can be used in electric vehicles, bicycles, tricycles, and other vehicles, primarily to reduce vehicle speed or stop the vehicle. The housing 100 of the brake lever 10 is mounted on the handlebars 20 of the vehicle, and the winding spool 800 of the transmission component 300 is used to wind the brake cable 30. During normal vehicle operation, the driver holds the handlebars 20. When it is necessary to reduce vehicle speed or stop the vehicle, the driver places their palm on the handlebars 20 and grips the handlebar body 200 of the brake lever 10. The handlebar body 200 rotates around the housing 100 via the connector 110. At this time, the transmission component 300, through its transmission cooperation with the handlebar body 200, also drives the winding spool 800 to rotate. During rotation, the winding spool 800 winds the brake cable 30, thereby achieving the purpose of reducing vehicle speed or stopping the vehicle.

[0040] The transmission engagement position between the transmission component 300 and the handlebar body 200 is adjustable to adjust the grip distance between the handlebar body 200 and the handlebar 20. Before driving, the driver can adjust the transmission engagement position between the transmission component 300 and the handlebar body 200 according to their hand size to adjust the grip distance between the handlebar body 200 and the handlebar 20, making the grip distance between the handlebar body 200 and the handlebar 20 suitable for their hand size, facilitating the driver's grip on the brake lever 10. Therefore, the brake lever 10 of this application, with its adjustable grip distance between the handlebar body 200 and the handlebar 20, can meet the needs of different drivers for the optimal grip distance.

[0041] See Figure 5 In some embodiments of this application, the transmission component 300 includes a rotatable first transmission wheel 310, a rotatable second transmission wheel 320, and a transmission belt 330 tensioned between the first transmission wheel 310 and the second transmission wheel 320. The transmission belt 330 is in transmission engagement with the handle body 200, and the transmission engagement surface between the transmission belt 330 and the handle body 200 is arranged along the rotation direction of the handle body 200. The winding reel 800 is disposed on the shaft of the first transmission wheel 310. When the handle body 200 rotates, the transmission belt 330 moves synchronously with the handle body 200. During the movement, the transmission belt 330 drives the first transmission wheel 310 and the second transmission wheel 320 to rotate, and the winding reel 800 on the shaft of the first transmission wheel 310 also rotates accordingly. It should be noted that... Figure 5 for Figure 4 A partial square diagram at point A.

[0042] It should be noted that the handlebar body 200 can engage with any position on the transmission mating surface of the transmission belt 330, thereby achieving the purpose of adjusting the grip distance between the handlebar body 200 and the handlebar 20. Since the rotation direction of the handlebar body 200 is arc-shaped, the transmission mating surface of the transmission belt 330 is also arc-shaped.

[0043] Among them, see Figure 5 The first transmission wheel 310 and / or the second transmission wheel 320 are gears, and the transmission belt 330 is a toothed transmission belt 330 that meshes with the gears. The effective transmission of the transmission component 300 can be ensured through the cooperation between the toothed transmission belt 330 and the gears.

[0044] See Figure 5 The housing 100 also includes a support portion 120, which supports the transmission belt 330 so that the transmission mating surface between the transmission belt 330 and the handle body 20 moves in the rotation direction of the handle body 20. The support portion 120 also guides the transmission of the transmission belt 330.

[0045] Considering the positional distribution of the transmission belt 330, specifically the portion of the transmission belt 330 located between the first transmission wheel 310 and the second transmission wheel 320, as shown below... Figure 6 The diagram shows two drive sections 330a arranged side-by-side, and two support sections 120 correspondingly. One support section 120 abuts against one drive section 330a, and the other support section 120 abuts against the other drive section 330a. It is understood that the first drive section 330a and the second drive section 330a are not fixed parts of the drive belt 330, but rather change as the drive belt 330 moves.

[0046] The support part 120 can be set along the rotation direction of the handle body 200, and can be set in the housing 100 by welding, integral molding or other methods.

[0047] In some embodiments of this application, see Figure 7 , Figure 8 and Figure 10 The handle body 200 has an outer tube 210 and an inner shaft 220 at one end near the housing 100. The inner shaft 220 is slidably mounted on the outer tube 210 until it engages with the outer tube 210 to clamp or release the transmission component 300. It should be noted that... Figure 10 for Figure 8 The provided brake handle 10 is shown in cross-sectional view in the BB direction.

[0048] Specifically, the inner shaft 220 cooperates with the outer tube 210 to clamp or unclamp the transmission belt 330 of the transmission component 300. When adjusting the grip distance between the handlebar body 200 and the handlebar 20, the inner shaft 220 can be slid along the outer tube 210 until the clamping of the transmission belt 330 is released. Then, the handlebar body 200 is rotated in the rotation direction. After the handlebar body 200 is rotated to a suitable transmission engagement position, the inner shaft 220 is slid along the outer tube 210 until it engages with the outer tube 210 to clamp the transmission belt 330. It should be noted that when the clamping of the transmission belt 330 is released, the transmission belt 330 does not move synchronously with the handlebar body 200; only when the transmission belt 330 is clamped does it move synchronously with the handlebar body 200.

[0049] See Figure 7 , Figure 8 and Figure 10 The outer tube 210 has a clamping part 211 at one end extending into the housing 100, and the inner shaft 220 has a pressing part 221 at one end extending into the housing 100. A clamping cavity Q for clamping the transmission component 300 is provided between the clamping part 211 and the pressing part 221. By cooperating with the clamping part 211 and the pressing part 221 to clamp the transmission belt 330 of the transmission component 300, the clamping area of ​​the transmission belt 330 can be increased, ensuring a firm connection between the handle body 200 and the transmission belt 330, and guaranteeing effective transmission between the two.

[0050] It should be noted that, see Figure 6 The housing 100 has a clearance hole 100a on the side wall near the handle body 200, through which the outer tube 210 and the inner shaft 220 extend into the housing 100. The clearance hole 100a can be provided along the rotation direction of the handle body 200.

[0051] Optionally, the insertion depth of the clamping part 211 within the housing 100 is greater than the insertion depth of the pressing part 221 within the housing 100. That is, the clamping part 211 abuts against the toothed surface of the transmission belt 330, and the pressing part 221 abuts against the smooth surface of the transmission belt 330. This arrangement of the positional relationship between the clamping part 211 and the pressing part 221 facilitates locking or unlocking of the transmission belt 330.

[0052] The clamping part 211 can be Figure 8 The inverted "U"-shaped frame shown has one vertical section connected to the outer tube 210 by welding, snap-fitting, or integral molding, while the other vertical section abuts against the toothed surface of the transmission belt 330. It should be noted that the thickness of the other vertical section of the "U"-shaped frame is very small and does not affect the abutment of the support part 120 against the transmission belt 330.

[0053] See Figure 8 and Figure 10The inner shaft 220 has a first limiting part 222 at the end away from the housing 100, and the outer tube 210 has a limiting hole 210a that cooperates with the first limiting part 222. The limiting hole 210a is arranged along the sliding direction of the inner shaft 220. Through the cooperation of the first limiting part 222 and the limiting hole 210a, the inner shaft 220 can slide along a preset direction, which facilitates locking or unlocking of the transmission belt 330.

[0054] The first limiting part 222 can be plate-shaped, and there can be multiple first limiting parts 222 (e.g., 2, 3, 4 or more), and the first limiting parts 222 are evenly distributed along the axial direction of the inner shaft 220. The number and position distribution of the limiting holes 210a are the same as those of the first limiting part.

[0055] Further, see Figure 7 , Figure 8 and Figure 10 The brake handle 10 also includes a second limiting part 400 and a threaded sleeve 500. The second limiting part 400 is fixed on the outer tube 210 and abuts against the outer wall of the housing 100. The threaded sleeve 500 is threadedly connected to the outer tube 210. When the inner shaft 220 and the outer tube 210 clamp the transmission component 300, the first limiting part 222 abuts against the second limiting part 400 and the threaded sleeve 500. When adjusting the gripping distance between the handlebar body 200 and the handlebar 20, first loosen the sleeving 500, then pull the first limiting part 222 outward, and the clamping part 221 will also move outward until the clamping of the transmission belt 330 is released. Then rotate the handlebar body 200 in the rotation direction. After the handlebar body 200 is rotated to the appropriate transmission engagement position, tighten the sleeving 500. At this time, the first limiting part 222 abuts against the second limiting part 400 and the sleeving 500, and the clamping part 221 and the clamping part 211 cooperate to clamp the transmission belt 330.

[0056] The side wall of the housing 100 near the second limiting part 400 is arranged along the rotation direction of the handle body 200. This ensures that the second limiting part 400 always abuts against the housing 100 during the rotation of the handle body 200, thereby ensuring that the transmission belt 330 is always clamped and can move synchronously with the handle body 200.

[0057] Furthermore, see Figure 7 , Figure 8 and Figure 10The brake lever 10 also includes a protective sleeve 600, which is movably fitted onto the end of the outer tube 210 located outside the housing 100. The threaded sleeve 500, the first limiting part 222, and the second limiting part 400 are located inside the protective sleeve 600. The protective sleeve 600 can slide onto the lever body 200 to expose the threaded sleeve 500. When adjusting the grip distance of the brake lever 10, the protective sleeve 600 can be moved away from the housing 100 to slide onto the lever body 200, exposing the threaded sleeve 500. Then, the threaded sleeve 500 and the first limiting part 222 can be adjusted accordingly. After the grip distance is adjusted, the protective sleeve 600 can be fitted onto the outside of the outer tube 210.

[0058] The 600 protective sleeve can be made of rubber, which facilitates deformation. (See also...) Figure 10 The protective sleeve 600 has a large-diameter cavity 600a and a small-diameter cavity 600b that are connected. The diameter of the large-diameter cavity 600a is larger than the diameter of the small-diameter cavity 600b. The small-diameter cavity 600b is used to accommodate the screw sleeve 500, the first limiting part 222 and the second limiting part 400. After deformation, the large-diameter cavity 600a can be fitted onto the outside of the handle body 200.

[0059] See Figure 3 and Figure 6 In some embodiments of this application, the brake lever 10 further includes an elastic element 700 disposed between the housing 100 and the winding reel 800. The elastic element 700 is used to provide a resetting force to the winding reel 800. When the winding reel 800 winds the brake cable 30 for braking, the elastic element 700 deforms; when the rider stops gripping the brake lever 10, the elastic element 700 resets and drives the winding reel 800 to rotate, thereby resetting the brake cable 30 and the lever body 200.

[0060] Optionally, see Figure 6 The housing 100 is provided with a mounting post 130, and the elastic element 700 is connected to the mounting post 130 and the winding disc 800.

[0061] See Figure 7 In this application, the connector 110 can be an inverted "L"-shaped structure, with the horizontal part of the "L"-shaped structure hinged to the housing 100 and the vertical part connected to the outer tube 210. The horizontal part can extend into the housing 100 and span the transmission belt 330, the clamping part 211 and the pressing part 221.

[0062] In this application, the housing 100 includes an upper cover and a lower cover that are connected to each other, and the transmission component is disposed in the space enclosed by the upper cover and the lower cover. The lower cover is provided with a fixing bracket 140, and the housing 100 is mounted on the handlebars 20 of the vehicle via the fixing bracket 140.

[0063] The top cover and the bottom shell can be connected by screws, clips, welding, or other methods.

[0064] On the other hand, embodiments of this application also provide a handlebar assembly, such as Figure 1 and Figure 2 As shown, the handlebar assembly includes a handlebar 20 and a brake lever 10 as described in any of the above claims, with a housing 100 of the brake lever 10 disposed on the handlebar 20.

[0065] Before driving, the driver can adjust the transmission engagement position between the transmission component 300 and the handlebar body 200 according to the size of their hands, thereby adjusting the grip distance between the handlebar body 200 and the handlebar 20. This ensures that the grip distance between the handlebar body 200 and the handlebar 20 is compatible with the size of the hand, making it easier for the driver to grip the brake lever 10. Therefore, the brake lever 10 of this application has an adjustable grip distance between the handlebar body 200 and the handlebar 20, which can meet the needs of different drivers for the optimal grip distance.

[0066] On the other hand, this application also provides a vehicle, which includes a frame, wheels, brake cable 30 and handlebar assembly as described above. The wheels and handlebar assembly are mounted on the frame, one end of the brake cable 30 is engaged with the wheel, and the other end of the brake cable 30 is connected to the cable reel 800 of the handlebar assembly.

[0067] Before driving, the driver can adjust the transmission engagement position between the transmission component 300 and the handlebar body 200 according to the size of their hands, thereby adjusting the grip distance between the handlebar body 200 and the handlebar 20. This ensures that the grip distance is compatible with the size of the hand, making it easier for the driver to grip the brake lever 10. Therefore, the vehicle of this application features an adjustable grip distance between the handlebar body 200 and the handlebar 20, which can meet the needs of different drivers for the optimal grip distance.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A brake lever, characterized in that, include: Housing, handle body and transmission components; The handle body is located outside the housing and is hinged to the housing via a connector; The transmission component is disposed within the housing, and a winding reel is provided on the transmission component. The transmission component is in transmission engagement with the handlebar body, so that when the handlebar body rotates, the transmission component can drive the winding reel to rotate. The transmission engagement position between the transmission component and the handlebar body is adjustable to adjust the gripping distance between the handlebar body and the handlebar. The transmission component includes a rotatable first transmission wheel, a rotatable second transmission wheel, and a transmission belt tensioned between the first and second transmission wheels. The transmission belt is in transmission engagement with the handlebar body, and the transmission engagement surface between the transmission belt and the handlebar body is arranged along the rotation direction of the handlebar body. The winding reel is disposed on the shaft of the first transmission wheel.

2. The brake lever according to claim 1, characterized in that, The first transmission wheel and / or the second transmission wheel are gears, and the transmission belt is a toothed transmission belt that meshes with the gear.

3. The brake lever according to claim 1, characterized in that, The housing is also provided with a support portion, which is used to support the transmission belt so that the transmission mating surface between the transmission belt and the handle body moves in the rotation direction of the handle body.

4. The brake lever according to claim 1, characterized in that, The handle body is provided with an outer tube and an inner shaft at one end near the housing. The inner shaft is slidably mounted on the outer tube until it cooperates with the outer tube to clamp or release the transmission component.

5. The brake lever according to claim 4, characterized in that, The outer tube has a clamping part at one end that extends into the housing, and the inner shaft has a pressing part at one end that extends into the housing. There is a clamping cavity between the clamping part and the pressing part for clamping the transmission component.

6. The brake lever according to claim 4, characterized in that, The inner shaft is provided with a first limiting part at one end away from the housing, and the outer tube has a limiting hole that cooperates with the first limiting part. The limiting hole is provided along the sliding direction of the inner shaft.

7. The brake lever according to claim 6, characterized in that, The brake handle also includes a second limiting part and a threaded sleeve. The second limiting part is fixed to the outer tube and abuts against the outer wall of the housing. The threaded sleeve is threadedly connected to the outer tube. When the inner shaft and the outer tube clamp the transmission component, the first limiting part abuts against the space between the second limiting part and the threaded sleeve.

8. The brake lever according to claim 7, characterized in that, The brake handle also includes a protective sleeve, which is movably fitted onto one end of the outer tube located outside the housing. The threaded sleeve, the first limiting part, and the second limiting part are located inside the protective sleeve, wherein the protective sleeve can slide onto the handle body to expose the threaded sleeve.

9. The brake lever according to any one of claims 1 to 8, characterized in that, The brake lever also includes an elastic element disposed between the housing and the winding reel, the elastic element being used to provide a resetting force to the winding reel.

10. A handlebar assembly, characterized in that, The handlebar assembly includes a handlebar and a brake lever as described in any one of claims 1 to 9, wherein the housing of the brake lever is disposed on the handlebar.

11. A vehicle, characterized in that, The vehicle includes a frame, wheels, brake cables, and a handlebar assembly as described in claim 10. The wheels and the handlebar assembly are mounted on the frame. One end of the brake cable engages with the wheel, and the other end of the brake cable is connected to the spool of the handlebar assembly.

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