An anti-theft saddle tube mechanism

Abstract

This application relates to an anti-theft saddle tube mechanism, belonging to the field of bicycle structural technology. It includes a saddle tube component, a locking component, and a protective sleeve. The lower end of the saddle tube component is slidably connected to a connecting tube, which is fitted onto the outer periphery of the saddle tube component. The saddle tube component has a limiting groove recessed into it, extending along its length. The upper end of the limiting groove is spaced apart from the upper end face of the saddle tube component, and the lower end is also spaced apart from the lower end face. The locking component is connected to a connecting hole, with its first end extending into the limiting groove and slidingly engaging with it. The second end of the locking component is engaged with the outside of the connecting tube, and the locking component and connecting tube are detachably connected. One end of the protective sleeve is sandwiched between the second end of the locking component and the connecting tube, and the second end of the protective sleeve surrounds the outer periphery of the second end of the locking component. The protective sleeve selectively restricts the disassembly of the locking component. This application can improve the problem of poor anti-theft performance of saddle tubes.

Description

Technical Field

[0001] This application relates to the field of bicycle structural technology, and in particular to an anti-theft saddle tube mechanism. Background Technology

[0002] In modern transportation systems, bicycles, with their numerous advantages such as environmental friendliness, convenience, and flexibility, occupy an important position in various fields including short-distance urban travel, fitness, and leisure. With technological advancements and improved living standards, the design and performance of various bicycle components are gradually being optimized. Among these, the saddle tube, as the structure connecting the frame and seat, allows for seat height adjustment through its relative sliding and limiting action with the frame.

[0003] Currently, there are several common traditional methods for connecting the seatpost to the frame. A common method is bolt tightening, where bolts are drilled in the frame, passed through the corresponding holes in the seatpost, and tightened, relying on the thread force of the bolts to maintain the seatpost's position. Another common method is clip-on clamping, where movable clips, such as those driven by a manual wrench, are installed on the frame to hold the seatpost in place, thus achieving a secure connection.

[0004] However, the traditional bolt tightening and clip clamping methods lack effective anti-theft features, and the saddle tube can be easily disassembled and stolen by others, causing unnecessary property losses to the vehicle owner.

[0005] Among the aforementioned technologies, there is a drawback: the anti-theft performance of the saddle tube is poor. Utility Model Content

[0006] In order to improve the problem of poor anti-theft performance of saddle tubes, this application provides an anti-theft saddle tube mechanism.

[0007] The anti-theft saddle tube mechanism provided in this application adopts the following technical solution:

[0008] An anti-theft saddle post mechanism is provided on a vehicle frame. The frame includes a connecting tube with a connecting hole. The mechanism includes a saddle post component, the lower end of which is slidably connected to the connecting tube. The connecting tube is fitted around the outer periphery of the saddle post component. The saddle post component has a limiting groove recessed into it, extending along its length. The upper end of the limiting groove is spaced apart from the upper surface of the saddle post component, and the lower end of the limiting groove is spaced apart from the lower surface of the saddle post component. A locking element is connected to the connecting hole, with its first end extending into the limiting groove and slidingly engaging with the limiting groove. The second end of the locking element is engaged with the outside of the connecting pipe, and the locking element is detachably connected to the connecting pipe. A protective sleeve has one end sandwiched between the second end of the locking element and the connecting pipe, and its second end surrounding the outer periphery of the second end of the locking element. The protective sleeve is used to selectively restrict the disassembly of the locking element.

[0009] By adopting the above technical solution, the connecting tube of the frame can be sleeved on the outer periphery of the saddle tube. The connecting hole on the connecting tube is used to install the locking component. The limiting groove on the saddle tube extends along its length and slides with the first end of the locking component, so that the saddle tube can slide stably in the connecting tube and limit the range of movement of the saddle tube, so as to realize the adjustment of the extension length of the saddle tube. One end of the protective sleeve is clamped between the second end of the locking component and the connecting tube, and the second end surrounds the outer periphery of the second end of the locking component, which can selectively restrict the disassembly of the locking component, so that the locking component can only be disassembled with the use of special tools. Combined with the setting that the two ends of the limiting groove are not through, the saddle tube cannot be pulled out without special tools, thus playing an anti-theft role and making the mechanism safer during use.

[0010] Optionally, the locking member includes a head and a screw. The head is located at one end of the screw and includes a connecting portion and a plurality of mounting petals. One side of the connecting portion is connected to the end of the screw. The first ends of the plurality of mounting petals are circumferentially spaced around the outer periphery of the connecting portion, and the second ends of the plurality of mounting petals extend radially away from the connecting portion.

[0011] By adopting the above technical solution, the screw of the locking component is used to connect with the connecting pipe to fix the locking component on the connecting pipe; the connecting part of the head connects the screw to the mounting petal to ensure the integrity of the structure; the mounting petal, which is circumferentially spaced around the outer periphery of the connecting part and extends radially outward at the second end, can make the second end of the locking component more firmly locked to the outside of the connecting pipe, enhancing the locking effect; at the same time, the protective sleeve has a better protective effect on this special structure locking component, making it impossible to disassemble the locking component without the use of special tools, so that when the locking component is pulled out, it will be blocked by the lower end of the limiting groove, thus achieving anti-theft performance.

[0012] Optionally, the protective sleeve includes a protrusion and a protective portion. The protrusion is disposed near a first end of the protective sleeve, and the protective portion is disposed near a second end of the protective sleeve. The protrusion surrounds the outer periphery of the second end of the locking member, allowing the second end of the locking member to rotate within the protrusion. The protective portion covers the side of the second end of the locking member away from the screw, and the diameter of the protrusion is larger than the maximum diameter of the protective portion.

[0013] By adopting the above technical solution, the protrusion of the protective sleeve allows the second end of the locking component to rotate within the protrusion, ensuring that the locking component can be operated flexibly and protecting its rotation from external interference to a certain extent; the protective part is placed on the side of the second end of the locking component away from the screw, which increases the difficulty for external objects to directly contact the second end of the locking component, preventing others from easily disassembling the locking component and playing an anti-theft role; the diameter of the protrusion is larger than the maximum diameter of the protective part. This structural design can not only ensure the protective effect of the protective part on the second end of the locking component, but also enhance the overall strength, and make the overall layout of the protective sleeve reasonable, effectively protecting without taking up too much space.

[0014] Optionally, the second end of the protective sleeve is provided with an opening, the maximum length of which is less than the maximum length of the second end of the locking member, and the second end of the protective sleeve and the second end of the locking member are spaced apart by a preset distance along the length direction of the screw.

[0015] By adopting the above technical solution, the second end of the protective sleeve is provided with an opening, and the maximum length of the opening is less than the maximum length of the second end of the locking component. This can prevent circumferential contact and rotation of the locking component at the second end of the locking component to a certain extent. At the same time, it can also increase the difficulty for external tools to insert into the second end of the locking component to achieve disassembly, thereby enhancing the anti-theft performance of the mechanism. Along the length direction of the screw, the second end of the protective sleeve and the second end of the locking component are set at a preset distance, which not only ensures that the protective sleeve has a certain protective space for the second end of the locking component, but also avoids excessive interference between the protective sleeve and the locking component, which would affect the normal rotation operation of the locking component. This further improves the convenience of use and anti-theft performance of the saddle tube mechanism.

[0016] Optionally, the shape of the opening is irregular.

[0017] By adopting the above technical solution, the irregular shape of the opening at the second end of the protective sleeve increases the difficulty for external tools to fit the opening, preventing others from easily using tools to contact and disassemble the locking parts through the opening, thereby achieving a better anti-theft effect for the anti-theft saddle tube mechanism.

[0018] Optionally, the saddle tube is shaped to match the connecting tube, and the cross-section of the saddle tube includes a maximum length value and a minimum length value, wherein the maximum length value is greater than the minimum length value.

[0019] By adopting the above technical solution, the shapes of the saddle tube and the connecting tube are matched, enabling better assembly and connection between the two. The cross-section of the saddle tube has a maximum length value and a minimum length value, with the maximum length value being greater than the minimum length value. This irregular shape makes the saddle tube less prone to rotation and lateral swaying within the connecting tube of the frame, improving the stability of the saddle tube 2, and also enhancing the overall strength and reliability of the saddle tube mechanism.

[0020] Optionally, the locking element is a screw, and the connecting hole is a threaded hole.

[0021] By adopting the above technical solution, the locking component is set as a screw, and the connecting hole is set as a threaded hole. The screw and the threaded hole cooperate to conveniently and firmly install the locking component on the connecting tube, so that the first end of the locking component can stably extend into the limiting groove of the saddle tube component, so as to realize the relative limiting of the saddle tube component and the frame connecting tube.

[0022] Optionally, the saddle tube is provided with a reinforcing part, which is located below the limiting groove.

[0023] By adopting the above technical solution, the reinforcing part of the saddle tube is located below the limiting groove, which can enhance the structural strength of the part of the saddle tube located below the limiting groove, improve the ability of this area to resist external deformation, make the saddle tube more stable and reliable during use, avoid damage caused by force when the saddle tube is pulled out, thereby extending the service life of the saddle tube and better cooperating with the locking part to realize the anti-theft function of the saddle tube.

[0024] Optionally, it also includes a slider, which is slidably connected to the limiting groove. The locking member is detachably connected to the slider, so that the slider can be clamped between the locking member and the limiting groove. The slider is used to space the sidewalls of the locking member and the limiting groove.

[0025] By adopting the above technical solution, a sliding component is set and slidably connected to the limiting groove. The locking component and the sliding component are detachably connected. The sliding component is clamped between the locking component and the limiting groove, which can separate the side wall of the locking component and the limiting groove, avoid the locking component directly contacting the side wall of the limiting groove to avoid friction and wear, extend the service life of the locking component and the limiting groove, and at the same time reduce the noise caused by friction and improve the user experience.

[0026] Optionally, the slider is made of polytetrafluoroethylene.

[0027] By adopting the above technical solution, the sliding component is made of polytetrafluoroethylene (PTFE). PTFE has good self-lubricating properties, which can reduce the friction between the sliding component and the limiting groove and locking component, making the sliding of the saddle tube component in the connecting pipe smoother. At the same time, it can reduce wear between components and extend service life. In addition, PTFE has stable chemical properties and can resist a certain degree of corrosion, improving the durability of the sliding component in different environments and ensuring the normal use of the anti-theft saddle tube mechanism.

[0028] In summary, this application includes at least the following beneficial technical effects:

[0029] The connecting tube of the frame can be sleeved on the outer circumference of the saddle tube. The connecting hole on the connecting tube is used to install the locking component. The limiting groove on the saddle tube extends along its length and slides with the first end of the locking component, allowing the saddle tube to slide stably within the connecting tube and limiting its range of movement, so as to adjust the extension length of the saddle tube. One end of the protective sleeve is clamped between the second end of the locking component and the connecting tube, and the second end surrounds the outer circumference of the second end of the locking component, which can selectively restrict the disassembly of the locking component, so that the locking component can only be disassembled with the use of special tools. Combined with the setting that the two ends of the limiting groove are not through, the saddle tube cannot be pulled out without special tools, thus playing an anti-theft role and making the mechanism safer during use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the anti-theft saddle tube mechanism according to an embodiment of this application.

[0031] Figure 2 This is an exploded view of the anti-theft saddle tube mechanism according to an embodiment of this application.

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0033] Figure 4 This is a front view of the anti-theft saddle tube mechanism according to an embodiment of this application.

[0034] Figure 5 yes Figure 4 Cross-sectional view at point BB.

[0035] Figure 6 This is a schematic diagram of the engagement of the locking member and the sliding member in an embodiment of this application.

[0036] Figure 7 This is a schematic diagram of the protective sleeve according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 11. Connecting pipe; 111. Connecting hole;

[0039] 2. Saddle tube fitting; 21. Limiting groove; 22. Reinforcing part; 23. Mounting base;

[0040] 3. Locking element; 31. Head; 311. Connecting part; 312. Mounting flap; 32. Screw;

[0041] 4. Protective sleeve; 41. Protrusion; 42. Protective part; 421. Opening;

[0042] 5. Sliding components;

[0043] 6. Plunger components. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be further described in detail below. In this embodiment, unless otherwise specified, "connection", "linking", and "fixing" are interpreted broadly, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection, and interaction between two components, etc., and can be understood according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, in the description of this embodiment, terms such as "above," "below," "left," and "right," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are used only for ease of description and simplification of operation. They 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. Unless otherwise stated, directional terms such as "inner" and "outer" used in this application refer to the outline of the corresponding component itself.

[0046] like Figure 1 , Figure 2 and Figure 3As shown in the figure, this application discloses an anti-theft saddle tube mechanism (hereinafter referred to as the "mechanism"). The mechanism is mounted on the frame and includes a saddle tube component 2, a locking component 3, and a protective sleeve 4.

[0047] like Figure 2 , Figure 3 and Figure 4 As shown, the frame includes a connecting tube 11 with a connecting hole 111. The upper end of the connecting tube 11 is open, and the lower end of the saddle tube 2 slides through the connecting tube 11, with the connecting tube 11 fitted around the outer periphery of the saddle tube 2. A mounting piece is connected to the upper end of the saddle tube 2 for mounting the seat. The saddle tube 2 has a limiting groove 21, which is recessed into the saddle tube 2 and extends along its length. The upper end of the limiting groove 21 is spaced apart from the upper surface of the saddle tube 2, and the lower end of the limiting groove 21 is spaced apart from the lower surface of the saddle tube 2, thus enabling limiting through both ends of the limiting groove 21.

[0048] like Figure 2 , Figure 3 and Figure 5 As shown, the connecting hole 111 and the limiting groove 21 are correspondingly provided. The locking member 3 is connected to the connecting hole 111, so that the first end of the locking member 3 extends into the limiting groove 21. The first end of the locking member 3 slides in the limiting groove 21, so that the saddle tube 2 can slide stably within the connecting tube 11 and limit the range of movement of the saddle tube 2, so as to realize the adjustment of the extension length of the saddle tube 2. The second end of the locking member 3 is locked to the outside of the connecting tube 11. The locking member 3 and the connecting tube 11 are detachably connected, so that the saddle tube 2 can be disassembled by removing the locking member 3.

[0049] One end of the protective sleeve 4 is clamped between the second end of the locking member 3 and the connecting pipe 11, and the second end of the protective sleeve 4 surrounds the outer periphery of the second end of the locking member 3. The protective sleeve 4 is used to selectively restrict the disassembly of the locking member 3, so that the locking member 3 can only be disassembled with a special tool. At the same time, the way the two ends of the limiting groove 21 are not through-holes ensures that the saddle tube 2 cannot be pulled out without a special tool to remove the locking member 3, thus playing an anti-theft role and making the mechanism safer during use. It is understood that the connecting pipe 11 and the saddle tube 2 are fixed together by a locking mechanism. The specific structure of the locking mechanism includes, but is not limited to, a manual wrench-driven locking mechanism, and existing structures can be used as needed.

[0050] like Figure 2 , Figure 3 and Figure 5As shown, optionally, the shape of the saddle tube 2 matches that of the connecting tube 11, enabling better assembly and connection between the two. The cross-section of the saddle tube 2 includes a maximum length value and a minimum length value, with the maximum length value being greater than the minimum length value. This makes the cross-section of the saddle tube 2 non-circular, thus making it less prone to rotation and lateral swaying within the connecting tube 11 of the frame. This improves the stability of the saddle tube 2 and also enhances the overall strength and reliability of the saddle tube mechanism.

[0051] like Figure 2 , Figure 3 and Figure 5 As shown, optionally, the saddle tube component 2 is provided with a reinforcing part 22, which is located below the limiting groove 21. This reinforcing part 22 enhances the structural strength of the portion of the saddle tube component 2 located below the limiting groove 21, improves the resistance of this area to external deformation, makes the saddle tube more stable and reliable during use, avoids damage caused by forceful removal of the saddle tube component 2, thereby extending the service life of the saddle tube and better cooperating with the locking component 3 to achieve the anti-theft function of the saddle tube. The reinforcing part 22 can be made of a higher strength material or a reinforcing block, and its specific form is not limited.

[0052] like Figure 2 , Figure 3 and Figure 6 As shown, optionally, the locking member 3 includes a head 31 and a screw 32. The head 31 is located at one end of the screw 32. The screw 32 of the locking member 3 is used to connect with the connecting pipe 11 to fix the locking member 3 on the connecting pipe 11. The head 31 is used to achieve the snap-fit ​​with the connecting pipe 11. Specifically, the head 31 includes a connecting portion 311 and a plurality of mounting petals 312. One side of the connecting portion 311 is connected to the end of the screw 32. The first ends of the plurality of mounting petals 312 are circumferentially spaced around the outer periphery of the connecting portion 311. The connecting portion 311 of the head 31 connects the screw 32 to the mounting petals 312 to ensure the integrity of the structure. The second ends of the plurality of mounting petals 312 extend radially away from the connecting portion 311, so that the second end of the locking member 3 is more firmly snapped onto the outside of the connecting pipe 11, enhancing the locking effect. At the same time, the protective sleeve 4 provides better protection for the locking part 3 with this special structure, making it impossible to disassemble the locking part 3 without the use of special tools. As a result, when the locking part 3 is pulled out, it will be blocked by the lower end of the limiting groove 21, thus achieving anti-theft performance.

[0053] like Figure 2 , Figure 3 and Figure 7As shown, optionally, the protective sleeve 4 includes a protrusion 41 and a protective portion 42. The protrusion 41 is disposed near the first end of the protective sleeve 4, and the protective portion 42 is disposed near the second end of the protective sleeve 4. The protrusion 41 and the protective portion 42 are connected, such that the end of the protrusion 41 away from the protective portion 42 forms the first end of the protective sleeve 4, and the end of the protective portion 42 away from the protrusion 41 forms the second end of the protective sleeve 4. The protrusion 41 surrounds the outer periphery of the second end of the locking member 3, allowing the second end of the locking member 3 to rotate within the protrusion 41, ensuring that the locking member 3 can be operated flexibly and protecting its rotation from external interference to a certain extent. The protective portion 42 covers the side of the second end of the locking member 3 away from the screw 32, increasing the difficulty for external objects to directly contact the second end of the locking member 3, preventing others from easily disassembling the locking member 3, and playing an anti-theft role. The diameter of the protrusion 41 is larger than the maximum diameter of the protective part 42. This structural design can not only ensure the protective effect of the protective part 42 on the second end of the locking member 3, but also enhance the overall strength through the bending at the connection.

[0054] like Figure 2 , Figure 3 and Figure 7 As shown, optionally, the second end of the protective sleeve 4 has an opening 421. The maximum length of the opening 421 is less than the maximum length of the second end of the locking member 3. This can, to a certain extent, prevent circumferential contact and rotation of the locking member 3 at its second end. It also increases the difficulty for external tools to insert into the second end of the locking member 3 for disassembly, thus enhancing the anti-theft performance of the mechanism. Along the length of the screw 32, the second end of the protective sleeve 4 and the second end of the locking member 3 are spaced at a preset distance. This ensures that the protective sleeve 4 provides sufficient protective space for the second end of the locking member 3 while avoiding excessive interference between the protective sleeve 4 and the locking member 3, which would affect the normal rotation of the locking member 3. This further improves the ease of use and anti-theft performance of the mechanism. Specifically, the size of the preset distance can be set as needed.

[0055] like Figure 2 , Figure 3 and Figure 7 As shown, optionally, the irregular shape of the opening 421 increases the difficulty for external tools to fit into the opening 421, preventing others from easily using tools to access and disassemble the locking member 3 through the opening 421, thereby achieving a better anti-theft effect of the anti-theft saddle tube mechanism. The mechanism also includes a plunger 6, the shape of which is consistent with the shape of the opening 421, used to seal the opening 421. This reduces the risk of the locking member 3 accidentally falling off, while also reducing the risk of rainwater and impurities entering the protective sleeve 4, thus improving reliability.

[0056] Specifically, in other embodiments, the locking element 3 can be a screw, and the connecting hole 111 can be a threaded hole. The screw and the threaded hole cooperate to conveniently and securely install the locking element 3 onto the connecting pipe 11, so that the first end of the locking element 3 can stably extend into the limiting groove 21 of the saddle tube 2, so as to achieve relative positioning between the saddle tube 2 and the frame connecting pipe 11.

[0057] like Figure 2 , Figure 3 and Figure 6 As shown, optionally, the mechanism also includes a sliding member 5. The sliding member 5 is slidably connected to the limiting groove 21, and the locking member 3 is detachably connected to the sliding member 5, allowing the sliding member 5 to be clamped between the locking member 3 and the limiting groove 21. The sliding member 5 serves to separate the sidewalls of the locking member 3 and the limiting groove 21, preventing the locking member 3 from directly contacting the sidewalls of the limiting groove 21 and causing friction and wear, thus extending the service life of the locking member 3 and the limiting groove 21. It also reduces noise caused by friction, improving the user experience. Specifically, the sliding member 5 is made of polytetrafluoroethylene (PTFE). PTFE has good self-lubricating properties, which can reduce the friction between the sliding member 5 and the limiting groove 21 and the locking member 3, making the sliding of the saddle tube 2 within the connecting tube 11 smoother, while also reducing wear between components and extending service life.

[0058] Understandably, the mechanism also includes necessary structures for connection, support, drive, positioning, limiting, sealing and control functions to enable the mechanism to operate normally; the shape, size, material and number of each part of the mechanism can be determined as needed to achieve the corresponding functions.

[0059] The implementation principle of an anti-theft saddle tube mechanism in this application embodiment is as follows: The connecting tube 11 of the frame is sleeved on the outer periphery of the saddle tube 2. The connecting hole 111 on the connecting tube 11 is used to install the locking member 3. The limiting groove 21 provided on the saddle tube 2 extends along the length direction and slides with the first end of the locking member 3, so that the saddle tube 2 can slide stably in the connecting tube 11. The length of the limiting groove 21 limits the range of movement of the saddle tube 2, so as to realize the adjustment of the extension length of the saddle tube 2. One end of the protective sleeve 4 is clamped between the second end of the locking member 3 and the connecting tube 11, and the second end surrounds the outer periphery of the second end of the locking member 3. It can selectively restrict the disassembly of the locking member 3, so that the locking member 3 can only be disassembled when using special tools. At the same time, the setting of the two ends of the limiting groove 21 not being through, so that the saddle tube 2 cannot be pulled out without special tools to remove the locking member 3, thereby playing an anti-theft role and making the mechanism safer during use.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An anti-theft saddle tube mechanism, mounted on a vehicle frame, the frame including a connecting tube (11), the connecting tube (11) having a connecting hole (111), characterized in that, include: A saddle tube (2) is provided, the lower end of which is slidably connected to the connecting tube (11). The connecting tube (11) is used to be sleeved on the outer periphery of the saddle tube (2). The saddle tube (2) is provided with a limiting groove (21). The limiting groove (21) is recessed on the saddle tube (2). The limiting groove (21) extends along the length direction of the saddle tube (2). The upper end of the limiting groove (21) is spaced apart from the upper end face of the saddle tube (2). The lower end of the limiting groove (21) is spaced apart from the lower end face of the saddle tube (2). A locking member (3) is connected to the connecting hole (111), such that the first end of the locking member (3) extends into the limiting groove (21), the first end of the locking member (3) slides in cooperation with the limiting groove (21), and the second end of the locking member (3) is locked outside the connecting pipe (11). The locking member (3) and the connecting pipe (11) are detachably connected. A protective sleeve (4) is provided at one end between the second end of the locking member (3) and the connecting pipe (11). The second end of the protective sleeve (4) surrounds the outer periphery of the second end of the locking member (3). The protective sleeve (4) is used to selectively restrict the disassembly of the locking member (3).

2. The anti-theft saddle tube mechanism according to claim 1, characterized in that, The locking member (3) includes a head (31) and a screw (32). The head (31) is located at one end of the screw (32). The head (31) includes a connecting part (311) and a plurality of mounting petals (312). One side of the connecting part (311) is connected to the end of the screw (32). The first ends of the plurality of mounting petals (312) are circumferentially spaced on the outer periphery of the connecting part (311), and the second ends of the plurality of mounting petals (312) extend radially away from the connecting part (311).

3. The anti-theft saddle tube mechanism according to claim 2, characterized in that, The protective sleeve (4) includes a protrusion (41) and a protective part (42). The protrusion (41) is located near the first end of the protective sleeve (4), and the protective part (42) is located near the second end of the protective sleeve (4). The protrusion (41) surrounds the outer periphery of the second end of the locking member (3), allowing the second end of the locking member (3) to rotate within the protrusion (41). The protective part (42) covers the side of the second end of the locking member (3) away from the screw (32). The diameter of the protrusion (41) is larger than the maximum diameter of the protective part (42).

4. The anti-theft saddle tube mechanism according to claim 2, characterized in that, The second end of the protective sleeve (4) is provided with an opening (421). The maximum length of the opening (421) is less than the maximum length of the second end of the locking member (3). Along the length direction of the screw (32), the second end of the protective sleeve (4) and the second end of the locking member (3) are spaced apart by a preset distance.

5. The anti-theft saddle tube mechanism according to claim 4, characterized in that, The opening (421) has an irregular shape.

6. The anti-theft saddle tube mechanism according to claim 1, characterized in that, The shape of the saddle tube (2) matches that of the connecting tube (11), and the cross-section of the saddle tube (2) includes a maximum length value and a minimum length value, wherein the maximum length value is greater than the minimum length value.

7. The anti-theft saddle tube mechanism according to claim 1, characterized in that, The locking element (3) is a screw, and the connecting hole (111) is a threaded hole.

8. The anti-theft saddle tube mechanism according to claim 1, characterized in that, The saddle tube (2) is provided with a reinforcing part (22), which is located below the limiting groove (21).

9. The anti-theft saddle tube mechanism according to claim 1, characterized in that, It also includes a sliding member (5), which is slidably connected to the limiting groove (21). The locking member (3) is detachably connected to the sliding member (5), so that the sliding member (5) can be clamped between the locking member (3) and the limiting groove (21). The sliding member (5) is used to separate the side wall of the locking member (3) and the limiting groove (21).

10. The anti-theft saddle tube mechanism according to claim 9, characterized in that, The sliding element (5) is made of polytetrafluoroethylene.

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