Locking quick-release device

Abstract

The utility model provides a locking quick release device, which comprises a locking piece, two groups of rotary telescopic mechanisms and a handle driving mechanism, and the locking piece comprises a holding ring and connecting parts arranged at the two ends of the holding ring; the two groups of rotary telescopic mechanisms are respectively arranged on the outer sides of the two connecting parts, each group of rotary telescopic mechanism comprises a locking piece and a linkage piece, the locking piece is connected to the connecting part, an inclined plane structure is arranged in the locking piece, the linkage piece is movably arranged in the locking piece, and a moving part matched with the inclined plane structure is arranged on the linkage piece; the handle driving mechanism is used for driving the two linkage pieces to rotate synchronously, and when the linkage pieces rotate, the moving parts of the linkage pieces force the linkage pieces to move in the axial direction through the slope structures on the locking pieces. According to the utility model, through the ingenious structural design of the locking piece and the linkage piece, the linkage piece rotates and moves upwards along with the axial direction, so that locking or quick release is realized; the two parts are movably connected, so that the disassembly and assembly are convenient, and the maintenance or replacement is convenient; the whole structure is simple, parts are few, assembly is very convenient, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical locking and quick-release technology, and in particular to a locking and quick-release device. Background Technology

[0002] In existing technologies, quick-release locking mechanisms are widely used for adjusting the height of bicycle saddle uprights and connecting and fixing other telescopic tubes. For example, the clamping quick-release device disclosed in Chinese Utility Model Patent CN210852732U includes a wrench, a C-shaped clamp, and a mounting shaft. The two mounting lugs of the C-shaped clamp are slidably fitted onto the mounting shaft. The wrench has one or two fixing parts, and an ejector assembly is provided between the fixing parts and the mounting lugs. The ejector assembly includes a first slider, a second slider, and at least two rolling elements. The rolling elements are cylindrical or frustum-shaped. The second slider is positioned and installed on the mounting lug; the first slider is positioned and installed on the fixing part. A receiving groove and a spiral groove are provided on the surfaces of the first slider and the second slider, and the rolling elements are confined within the receiving groove. When the wrench is turned, the wrench can drive the first slider to rotate, and at the same time drive the rolling elements to rotate around the mounting shaft in the spiral groove, thereby realizing the function of clamping or releasing the tubes inside the C-shaped clamp. However, its structure is complex, and the large number of parts leads to inconvenient assembly and high production costs. Summary of the Invention

[0003] To overcome the above-mentioned defects, this utility model provides a locking quick-release device with a simplified structure, convenient assembly and high cost-effectiveness, so as to solve the problems of complex structure, inconvenient assembly and high production cost in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is to provide a locking quick-release device, including:

[0005] The locking device includes a retaining ring, both ends of which are provided with connecting portions;

[0006] The rotating telescopic mechanism is provided in two sets, which are symmetrically arranged on the outside of the two connecting parts. Each set of rotating telescopic mechanisms includes a locking member and a linkage member. The locking member is connected to the connecting part and has an inclined surface structure inside. The linkage member is movably disposed inside the locking member and has a moving part that cooperates with the inclined surface structure. When the linkage member rotates, its moving part forces the linkage member to move axially through the inclined surface structure on the locking member.

[0007] The handle drive mechanism is configured to drive two linkages to rotate synchronously and has a tightened state and an open state. When in the tightened state, the two linkages approach each other to apply pressure to the two connecting parts, causing the two connecting parts to come together and tighten the retaining ring. When in the open state, the two linkages move away from each other to release the pressure on the two connecting parts, causing the two connecting parts to move away from each other and achieve quick disassembly.

[0008] As a further improvement of this utility model, the locking member includes a mounting part and a first mating hole disposed on the side facing the connecting part and communicating with the mounting part. The mounting part is provided with the inclined structure, which has a low point position and a high point position. A sliding surface that gradually slopes towards the outside of the locking member is formed between the low point position and the high point position.

[0009] The linkage component is movably disposed on the mounting part and includes a linkage body. The linkage body is provided with a pressing part and a moving part. The pressing part is movably connected to the first mating hole. The moving part is arranged radially along the linkage body and supported on the inclined structure so that when the linkage component rotates, it reciprocates on the sliding surface, driving the pressing part to extend or retract axially into the first mating hole, so as to apply or release pressure on the connection part.

[0010] As a further improvement of this utility model, two limiting parts are symmetrically arranged radially on the inner peripheral wall of the mounting part, and the two limiting parts are respectively arranged on the inclined structure, and the two inclined structures are arranged in opposite directions.

[0011] The linkage body is a cylindrical structure and is coaxially arranged with the locking member; the moving part is also a cylindrical structure and is configured as two, with the two moving parts arranged symmetrically along the radial direction of the linkage body; at the same time, the two moving parts are respectively supported on the two inclined structures.

[0012] As a further improvement of this utility model, each of the inclined structures has an arc-shaped groove at its high point that is adapted to the outer peripheral surface of the moving part, and the arc-shaped groove and the sliding surface form an arc transition; when the handle drive mechanism completes the quick release movement state, the moving part is limited to the arc-shaped groove.

[0013] As a further improvement of this utility model, steel sleeves are fitted onto the two moving parts.

[0014] As a further improvement of this utility model, the linkage component is further provided with:

[0015] A rotating platform is located on the side of the linkage body away from the pressing part, and the outer peripheral wall of the rotating platform is movably connected to the inner peripheral wall of the mounting part.

[0016] The second mating hole is coaxially arranged with the first mating hole and passes through the linkage component;

[0017] Two sliding parts are configured, and the two sliding parts are symmetrically arranged on both sides of the second mating hole along the radial direction of the rotary table.

[0018] As a further improvement of this utility model, the locking member is provided with two positioning bosses on the side facing the connecting part, and the two positioning bosses are symmetrically arranged radially along the first mating hole.

[0019] The connecting part is provided with:

[0020] A positioning groove is opened vertically on the outer side of the connecting part. The positioning boss is engaged in the positioning groove to restrict the rotation of the locking member about its axis. At the same time, the inner end face of the first mating hole abuts against the outer side of the connecting part.

[0021] The third mating hole is coaxially arranged with the first mating hole and passes through both of the connecting parts.

[0022] As a further improvement of this utility model, the handle drive mechanism includes:

[0023] The handle has a U-shaped structure, with symmetrical shaft blocks arranged on its two free ends. The two shaft blocks are provided with sliding holes that are adapted to the sliding part, and the sliding part is movably connected to the sliding holes.

[0024] A rotating shaft is coaxially arranged with the rotating telescopic mechanism, and its two ends pass symmetrically through the third mating hole, the first mating hole and the second mating hole in sequence, and are respectively fixedly connected to the two shaft blocks to restrict the axial movement of the locking member.

[0025] As a further improvement of this utility model, the rotating shaft is made of locking screws, and limit caps are respectively provided at both ends of its axial direction. The outer side of the shaft block is recessed with a groove for accommodating the limit caps, and the bottom of the groove is provided with a fourth mating hole for the rotating shaft to pass through.

[0026] As a further improvement of this utility model, the locking fastener is also provided with a guide portion, which is integrally formed on the retaining ring along the axial direction of the retaining ring, and a threaded positioning hole is provided on the guide portion along the radial direction of the retaining ring.

[0027] The beneficial effects of this utility model are as follows: through the ingenious structural design of the locking and linkage components, the locking component is forced to move axially when the linkage component rotates by the inclined surface structure on the locking component, thereby achieving locking or quick release; in addition, the two adopt a movable connection method, which is simple in structure, easy to disassemble and assemble, convenient for maintenance or replacement, and reduces production costs; the overall structure of this device is simple, with few parts, and very convenient to assemble, and it is connected and limited by a rotating shaft, which improves production efficiency and reduces production costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is an exploded structural diagram of the present invention;

[0030] Figure 3 This is a front view and a cross-sectional view along the AA direction of the locking component of this utility model.

[0031] Figure 4 This is a schematic diagram of the structure of the locking fastener of this utility model;

[0032] Figure 5 This is a schematic diagram of another embodiment of the linkage component of this utility model.

[0033] Referring to the accompanying drawings, the following explanations are provided:

[0034] 1. Locking fastener; 101. Clamping ring; 102. Connecting part; 1021. Positioning groove;

[0035] 1022. Third mating hole; 103. Guide part; 104. Threaded positioning hole; 2. Rotary telescopic mechanism; 201. Locking part; 2011. Mounting part; 2012. First mating hole; 2013. Inclined surface structure; 20131. Arc groove; 20132. Arc transition; 2014. Sliding surface; 2015. Limiting part; 2016. Positioning boss; 202. Linkage part; 2021. Linkage body; 2022, pressing part; 2023, moving part; 2024, rotating table; 2025, second mating hole; 2026, sliding part; 3, handle drive mechanism; 301, handle; 3011, shaft block; 3012, sliding hole; 3013, countersunk groove; 3014, fourth mating hole; 302, rotating shaft; 3021, limit cap; 4, steel sleeve; 5, outer tube; 6, telescopic inner tube. Detailed Implementation

[0036] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] This utility model provides a locking quick-release device for adjusting the height of bicycle saddle uprights and connecting and fixing other telescopic tubes. (See reference...) Figure 1 This embodiment provides an application scenario where a telescopic tube includes an outer tube 5 and a telescopic inner tube 6 inserted inside the outer tube. A locking quick-release device is provided on the outer tube 5 to tighten or loosen the outer tube 5, thereby achieving connection fixation or height adjustment between the telescopic inner tube 6 and the outer tube 5.

[0038] See Figures 1 to 4 The present invention provides an embodiment of a locking quick-release device, which consists of three parts: a locking component 1, a rotating telescopic mechanism 2, and a handle drive mechanism 3. This simplifies the components, makes the device easy to assemble and disassemble, and thus reduces production costs.

[0039] Among them, the locking fastener 1 is made of a material with elastic deformation capability, such as metal or plastic material depending on the scenario and cost requirements; it includes a retaining ring 101, and both ends of the retaining ring 101 are provided with connecting parts 102. The retaining ring 101 is used to be fitted onto the outer tube 5. The two connecting parts 102 can change the size of the gap under the action of external force so that the retaining ring 101 clamps or loosens the outer tube 5.

[0040] Two sets of rotary telescopic mechanisms 2 are provided, symmetrically arranged on the outer sides of the two connecting parts 102, respectively, to apply external force to the two connecting parts to change the distance between them. Each set of rotary telescopic mechanisms 2 includes a locking member 201 and a linkage member 202. The locking member 201 is connected to the connecting part 102 and has an inclined surface structure 2013 inside it. The linkage member 202 is movably disposed inside the locking member 201 and has a moving part 2023 that cooperates with the inclined surface structure 2013, so that when the linkage member 202 rotates, its moving part 2023 passes through the locking member 201. The inclined structure 2013 on the upper part forces the linkage 202 to move axially; the handle drive mechanism 3 is configured to drive the two linkages 202 to rotate synchronously and has a tightened state and an open state; wherein, when in the tightened state, the two linkages 202 rotate and move closer to apply pressure to the two connecting parts 102, so that the two connecting parts 102 come together to tighten the retaining ring 101; when in the open state, the two linkages 202 rotate and move away to release the pressure on the two connecting parts 102, so that the two connecting parts 102 move away from each other, thereby achieving quick disassembly.

[0041] Furthermore, the locking member 201 has an overall cylindrical structure, including a mounting portion 2011 and a first mating hole 2012 disposed on the side facing the connecting portion 102 and communicating with the mounting portion 2011. An inclined structure 2013 is disposed within the mounting portion 2011, having a low point and a high point, with a sliding surface 2014 gradually inclined outwards towards the locking member 201 between the low point and the high point. The linkage member 202 is movably disposed within the mounting portion 2011. The linkage body 2021 includes a pressing part 2022 and a moving part 2023. The pressing part 2022 is movably connected to the first mating hole 2012. The moving part 2023 is arranged radially along the linkage body 2021 and supported on the inclined structure 2013 so that when the linkage member 202 rotates, it reciprocates on the sliding surface 2014, driving the pressing part 2022 to extend or retract axially into the first mating hole 2012, so as to apply or release pressure on the connecting part 102. Understandably, the moving part 2023 has a locked state from a high point to a low point, and a quick-release state from a low point to a high point. In the locked state, the linkage 202 rotates, causing the moving part 2023 on it to move from a high point to a low point along the sliding surface 2014. At this time, the pressing part 2022 extends out of the first mating hole 2012 and applies pressure to the connecting part 102 to reduce the gap between them, so that the retaining ring 101 clamps the outer tube 5. Conversely, the linkage 202 rotates back to its original position, the moving part 2023 reaches the quick-release state, releases the external force on the two connecting parts 102, and loosens the retaining ring 101 from the outer tube 5.

[0042] The rotary telescopic mechanism of this embodiment uses a clever structural design for the locking and linkage components. When the linkage component rotates, the inclined structure on the locking component forces the locking component to move axially, thereby achieving locking or quick release. In addition, the two adopt an movable connection method, which is simple in structure and easy to disassemble and assemble, so as to facilitate maintenance or replacement, thereby reducing production costs.

[0043] Furthermore, two limiting parts 2015 are symmetrically arranged radially on the inner peripheral wall of the mounting part 2011, and inclined structures 2013 are respectively arranged between the two limiting parts 2015, and the two inclined structures 2013 are arranged in opposite directions; the linkage body 2021 is a cylindrical structure and is coaxially arranged with the locking member 201; the moving part 2023 is also a cylindrical structure and is configured as two, and the two moving parts 2023 are symmetrically arranged radially along the linkage body 2021; at the same time, the two moving parts 2023 are respectively supported on the two inclined structures 2013. At the high point of each inclined structure 2013, there is a recessed arc-shaped groove 20131 that matches the outer peripheral surface of the moving part 2023. The arc-shaped groove 20131 and the sliding surface 2014 form an arc-shaped transition 20132. When the handle drive mechanism 3 completes the quick-release movement, the moving part 2023 is limited to the arc-shaped groove 20131. At this time, the linkage needs to be subjected to a certain external force to disengage from the arc-shaped groove, ensuring the stability of the quick-release state. The arc-shaped transition 20132 reduces the resistance to the movement of the moving part 2023.

[0044] In another embodiment, see Figure 5 To improve the service life of the linkage component, a steel sleeve 4 is fitted onto the moving part 2023. This steel sleeve 4 is movably connected to the moving part 2023. When the linkage component 202 rotates, the steel sleeve rolls on the sliding surface 2014, thereby reducing friction between the linkage component and the locking component, thus extending its service life. Understandably, if the steel sleeve 4 is fitted, the diameter of the moving part will be correspondingly reduced to accommodate the axial upward movement distance of the linkage component.

[0045] Of course, depending on the application scenario, the service life of the linkage can also be extended by adding lubricating oil to the locking parts or by using existing suitable materials and coating technologies, thereby further improving the reliability of the rotary telescopic mechanism.

[0046] Furthermore, the locking member 201 has two positioning bosses 2016 on the side facing the connecting part 102. The two positioning bosses 2016 are arranged symmetrically along the radial direction of the first mating hole 2012 for docking assembly with the connecting part.

[0047] The connecting part 102 is provided with a positioning groove 1021 and a third mating hole 1022. The positioning groove 1021 is opened on the outer side of the connecting part 102 in the vertical direction (i.e., the axial direction of the telescopic tube). The positioning boss 2016 is engaged in the positioning groove 1021 to restrict the rotation of the locking member 201 around its axial direction. At the same time, the inner end face of the first mating hole 2012 abuts against the outer side of the connecting part 102. This mating method facilitates the quick docking or disengagement of the locking member 201 with the locking fastener 1, realizing convenient assembly and disassembly. The third mating hole 1022 is coaxially arranged with the first mating hole 2012 and passes through the two connecting parts 102.

[0048] Furthermore, the linkage 202 is also provided with a rotary table 2024, a second mating hole 2025, and a sliding part 2026. The rotary table 2024 is located on the side of the linkage body 2021 opposite to the pressing part 2022, and the outer peripheral wall of the rotary table 2024 is movably connected to the inner peripheral wall of the mounting part 2011. That is, the outer diameter of the rotary table 2024 matches the inner diameter of the mounting part 2011 to ensure the stability of the rotation and movement of the linkage 202. The second mating hole 2025 is coaxially arranged with the first mating hole 2012 and passes through the linkage 202. Two sliding parts 2026 are configured, and the two sliding parts 2026 are symmetrically arranged on both sides of the second mating hole 2025 along the radial direction of the rotary table 2024. This structure facilitates positioning with the handle.

[0049] Furthermore, the handle drive mechanism 3 includes a handle 301 and a rotating shaft 302. The handle 301 has a U-shaped structure, with shaft blocks 3011 symmetrically arranged on its two free ends. The two shaft blocks 3011 are provided with sliding holes 3012 that are adapted to the sliding part 2026. The sliding part 2026 is movably connected to the sliding holes 3012. That is, when the linkage moves axially, the sliding part 2026 rotates and moves within the sliding holes 3012, thereby causing the linkage to rotate around the axis of the locking member, avoiding eccentricity and rotational jamming, and ensuring the normal and stable operation of the linkage. The rotating shaft 302 is coaxially arranged with the rotating telescopic mechanism 2, and its two ends symmetrically pass through the third mating hole 1022, the first mating hole 2012 and the second mating hole 2025 in sequence, and are respectively fixedly connected to the two shaft blocks 3011 to restrict the axial movement of the locking member 201.

[0050] Furthermore, the rotating shaft 302 uses a locking screw, with limit caps 3021 at both ends along its axial direction. The outer side of the shaft block 3011 is recessed with a countersunk groove 3013 for accommodating the limit caps 3021. The bottom of the countersunk groove 3013 is provided with a fourth mating hole 3014 for the rotating shaft 302 to pass through. The locking screw is assembled from male and female screws. The female screw has a pin for passing through each mating hole, and the end facing away from the limit cap 3021 has an internal thread. The end of the male screw facing away from the limit cap 3021 has an external thread. The male screw is screwed onto the female screw to form a rotating shaft. The installation is very quick and effectively improves assembly efficiency by locking the male screw.

[0051] Furthermore, in order to facilitate the fastener being fitted onto the telescopic tube, the fastener 1 is also provided with a guide portion 103. The guide portion 103 is integrally formed on the retaining ring 101 along the axial direction of the retaining ring 101. A threaded positioning hole 104 is provided on the guide portion 103 along the radial direction of the retaining ring 101, and a screw (not shown) is connected to the threaded positioning hole. The inner end of the screw presses against the wall of the telescopic tube to position the fastener on the telescopic tube.

[0052] In summary, the locking and quick-release device provided by this utility model, through the ingenious structural design of the locking and linkage components, forces the locking component to move axially when the linkage component rotates, thereby achieving locking or quick release. Furthermore, the two components are connected in a movable manner, resulting in a simple structure, convenient assembly and disassembly, facilitating maintenance or replacement and reducing production costs. The overall structure of this device is simple, assembly is very convenient, and it uses a rotating shaft for connection and positioning, improving production efficiency.

[0053] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A locking quick release device, characterized in that, The utility model relates to a locking device for a fastener, comprising: a locking device (1) comprising a clasp (101) with two ends each provided with a connecting part (102); a rotating telescopic mechanism (2) provided with two groups, two groups of the rotating telescopic mechanism (2) are respectively arranged on the outer side of two connecting parts (102) symmetrically, each group of rotating telescopic mechanism (2) comprises a locking part (201) and a linkage (202), the locking part (201) is connected to the connecting part (102), and a slope structure (2013) is arranged in the locking part (201), the linkage (202) is movably arranged in the locking part (201), and a moving part (2023) is arranged on the linkage (202) and matched with the slope structure (2013), so that when the linkage (202) rotates, the moving part (2023) forces the linkage (202) to move in the axial direction through the slope structure (2013) on the locking part (201); a handle driving mechanism (3) configured to drive two linkages (202) to rotate synchronously and having a tightening state and an opening state; wherein when in the tightening state, two linkages (202) are close to each other to apply pressure to two connecting parts (102), so that two connecting parts (102) are close to each other to tighten the clasp (101), and when in the opening state, two linkages (202) are far away from each other to release the pressure on two connecting parts (102), so that two connecting parts (102) are far away from each other to realize quick disassembly.

2. The locking quick release device of claim 1, wherein: The locking part (201) comprises a mounting part (2011) and a first matching hole (2012) arranged on the side of the connecting part (102) and communicated with the mounting part (2011), the slope structure (2013) is arranged in the mounting part (2011), the slope structure (2013) has a low point position and a high point position, and a sliding surface (2014) gradually inclined towards the outside of the locking part (201) is formed between the low point position and the high point position; The linkage (202) is movably arranged in the mounting part (2011) and comprises a linkage main body (2021), the linkage main body (2021) is provided with a pressing part (2022) and a moving part (2023), the pressing part (2022) is movably connected with the first matching hole (2012), and the moving part (2023) is arranged along the radial direction of the linkage main body (2021) and supported on the slope structure (2013), so that when the linkage (202) rotates, the moving part (2023) reciprocates on the sliding surface (2014), drives the pressing part (2022) to extend or retract in the axial direction in the first matching hole (2012), and applies or releases the pressure on the connecting part (102).

3. The locking quick release device of claim 2, wherein: Two limiting parts (2015) are symmetrically arranged on the inner circumferential wall of the mounting part (2011) along the radial direction, two limiting parts (2015) are respectively arranged in the slope structure (2013), and two slope structures (2013) are arranged in different directions. The linkage main body (2021) is a cylindrical structure and is coaxially arranged with the locking piece (201); the moving part (2023) is also a cylindrical structure and is configured as two, the two moving parts (2023) are symmetrically arranged along the radial direction of the linkage main body (2021); meanwhile, the two moving parts (2023) are respectively supported on the two inclined surface structures (2013).

4. The quick release locking device of claim 3, wherein: The high point position of each inclined surface structure (2013) is concavely provided with an arc-shaped groove (20131) matched with the outer circumferential surface of the moving part (2023), and the arc-shaped groove (20131) and the sliding surface (2014) are arc-shaped transition (20132); when the handle driving mechanism (3) completes the quick release movement state, the moving part (2023) is limited in the arc-shaped groove (20131).

5. The locking quick release device of claim 4, wherein: The two moving parts (2023) are sleeved with a steel sleeve (4).

6. The locking quick release device of claim 4, wherein, The linkage piece (202) is further provided with: A rotating table (2024) is arranged on the side of the linkage main body (2021) away from the pressing part (2022), and the outer circumferential wall of the rotating table (2024) is movably connected with the inner circumferential wall of the mounting part (2011); A second matching hole (2025) is coaxially arranged with the first matching hole (2012) and penetrates through the linkage piece (202); The slide-fitting part (2026) is configured as two, and the two slide-fitting parts (2026) are symmetrically arranged on the two sides of the second matching hole (2025) along the radial direction of the rotating table (2024).

7. The locking quick release device of claim 6, wherein: The locking piece (201) is provided with two positioning bosses (2016) on the side facing the connecting part (102), and the two positioning bosses (2016) are symmetrically arranged along the radial direction of the first matching hole (2012); The connecting part (102) is provided with: A positioning groove (1021) is opened on the outer side of the connecting part (102) in the vertical direction, the positioning boss (2016) is clamped in the positioning groove (1021) to limit the rotation of the locking piece (201) around its axis, and meanwhile, the inner side end surface of the first matching hole (2012) abuts against the outer side surface of the connecting part (102); A third matching hole (1022) is coaxially arranged with the first matching hole (2012) and penetrates through the two connecting parts (102).

8. The quick release locking device of claim 7, wherein, The handle driving mechanism (3) comprises: A handle (301) in a U-shaped structure, two free ends of which are symmetrically provided with shaft blocks (3011), and the two shaft blocks (3011) are provided with slide-fitting holes (3012) matched with the slide-fitting parts (2026), and the slide-fitting parts (2026) are movably connected with the slide-fitting holes (3012); A rotating shaft (302) is coaxially arranged with the rotating telescopic mechanism (2), and the two axial ends are respectively fixedly connected with the two shaft blocks (3011) after sequentially and symmetrically penetrating through the third matching hole (1022), the first matching hole (2012) and the second matching hole (2025), so as to limit the axial movement of the locking piece (201).

9. The locking quick release device of claim 8, wherein: The rotating shaft (302) is selected with a lock screw, and the axial two ends of the rotating shaft (302) are respectively provided with a limiting cap (3021). The outer side of the shaft block (3011) is concavely provided with a sunken groove (3013) for accommodating the limiting cap (3021), and the groove bottom of the sunken groove (3013) is provided with a fourth matching hole (3014) for the rotating shaft (302) to pass through.

10. The locking quick release device of claim 1, wherein: The locking piece (1) is further provided with a guide portion (103) which is integrally formed on the clamping ring (101) along the axial direction of the clamping ring (101). The guide portion (103) is provided with a threaded positioning hole (104) penetrating through the guide portion (103) along the radial direction of the clamping ring (101).

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