A quick-release device

Abstract

This application provides a quick-release device. The quick-release device includes: a pipe clamp consisting of a pair of locking members, a base, and a substrate mounted on the base; a receiving space is formed inside the substrate; a notch is opened on the substrate, and the pair of locking members are disposed on both sides of the notch; the locking members have mounting grooves including arcuate concave surfaces; a pair of quick-release wrenches, one end of which is provided with a first through hole and a cam with an involute convex surface, the first through hole and the base circle of the cam being coaxially arranged; multiple fastening components and a pair of rotating shafts inserted into the first through hole; the cam is assembled into the mounting groove through the fastening components, the involute convex surface abutting against the arcuate concave surface; when the quick-release wrench rotates about the rotating shaft in a direction away from the substrate, the receiving space has a first dimension in the radial direction of the substrate; when the quick-release wrench rotates about the rotating shaft in a direction closer to the substrate, the receiving space has a second dimension in the radial direction of the substrate, smaller than the first dimension. This quick-release device can increase the preload force while providing a simple disassembly and assembly process.

Description

Technical Field

[0001] This utility model relates to a quick-release device, and more particularly to a quick-release device for a drone power sleeve. Background Technology

[0002] Currently, drone power kits on the market (drone power kits refer to power system kits that provide the power required for drone flight and can be used to ensure that drones can achieve stable flight and mission execution) have carbon tubes (carbon tubes are used as the frame of drone power kits, motor mounting bases and ESC load-bearing structures), and the aforementioned carbon tubes need to be installed and removed using quick-release devices to improve the efficiency of carbon tube installation and removal.

[0003] In traditional quick-release devices, bolt pre-tightening is usually used to increase the clamping force of the device on the carbon tube. However, this method requires the use of a screwdriver for pre-tightening every time the carbon tube is removed or installed, making the removal and installation process of traditional quick-release devices quite cumbersome. Utility Model Content

[0004] The quick-release device provided by this utility model aims to solve at least some of the defects of existing quick-release devices applicable to drone power sleeves.

[0005] This utility model provides a quick-release device. The quick-release device includes: A pipe clamp, the pipe clamp comprising a base, a base body, and a pair of locking elements; The base is in the shape of a hollow cylinder, and an internal space is formed inside the base. The base is placed on the base. The base has a notch, and the notch and the base are arranged opposite each other in the radial direction of the base; A pair of locking members are respectively disposed on opposite sides of the notch in a first direction, and both of the locking members protrude from the outer cylindrical surface of the base; The locking member has a mounting groove on the side opposite to the notch in the first direction, and the mounting groove has a concave arc surface. A pair of quick-release wrenches, one end of which is provided with a first through hole and a cam with an involute convex surface, and the first through hole and the base circle of the cam are coaxially arranged; A pair of rotating shafts and a plurality of fastening components, wherein the rotating shafts are inserted into the first through hole, and at least a portion of the fastening components can pass through the quick-release wrench, the rotating shafts and the locking member, such that the cam of the quick-release wrench is fitted into the mounting groove of the locking member, at which time the involute convex surface abuts against the arc concave surface; The quick-release wrench can rotate about the pivot in a direction toward or away from the base. When the quick-release wrench rotates about the pivot in a direction away from the base, the receiving space has a first dimension in the radial direction of the base. When the quick-release wrench rotates about the pivot towards the base, the protrusions of the pair of quick-release wrenches force the pair of locking members to close together, so that the receiving space has a second dimension in the radial direction of the base, and the second dimension is smaller than the first dimension; The first direction is orthogonal to the thickness direction of the base and the axial direction of the substrate.

[0006] In some embodiments, the base, the substrate, and the pair of locking members are an integral structure.

[0007] In some embodiments, the notch communicates with the receiving space in the radial direction of the substrate, and the notch extends through both axially opposite ends of the substrate.

[0008] In some embodiments, the substrate is provided with a pair of engaging grooves on the opposite outer cylindrical surfaces on both sides in the first direction, and both of the engaging grooves penetrate through the opposite ends of the substrate in its axial direction. The quick-release wrench has an engagement protrusion at the end away from the cam that matches the engagement groove.

[0009] In some embodiments, when the quick-release wrench is rotated about the pivot in a direction away from the base, the engaging protrusion and the engaging groove disengage from each other. When the quick-release wrench rotates around the pivot towards the base, the engaging protrusion and the engaging groove engage with each other.

[0010] In some embodiments, the quick-release wrench has a contact portion, and the cam and the engaging protrusion are respectively disposed at the two ends of the contact portion; The fitting part has a shape adapted to the outer cylindrical surface of the substrate. When the engaging protrusion is engaged in the engaging groove, the fitting part is tightly attached to the outer cylindrical surface of the substrate.

[0011] In some embodiments, the quick-release wrench is provided with a plurality of first mounting through holes, the rotating shaft is provided with a plurality of second mounting through holes, and the mounting groove is provided with a plurality of third mounting through holes; The axial direction of the first mounting through hole is orthogonal to the axial direction of the second mounting through hole, the axial direction of the second mounting through hole is orthogonal to the axial direction of the rotating shaft, and the axial direction of the third mounting through hole is parallel to the first direction.

[0012] In some embodiments, when the quick-release wrench is connected to the locking member, the first mounting through hole, the second mounting through hole, and the third mounting through hole are coaxially arranged.

[0013] In some embodiments, the fastening component includes: A double-ended bolt, the double-ended bolt comprising a base shank and two threaded portions; The two threaded portions are respectively disposed at the two ends of the base rod in its axial direction; Two round-headed nuts are respectively disposed on the two threaded portions.

[0014] In some embodiments, the fitting portion is provided with a plurality of openings, and each of the openings corresponds to a first mounting through hole; The threaded portion passes through the third mounting through hole, the second mounting through hole, and the first mounting through hole until it enters the opening; The round-headed nut is installed from the opening to the threaded portion.

[0015] At least one beneficial effect of the quick-release device provided in this utility model embodiment is that the quick-release device adopts a double-sided quick-release wrench design to increase the deformation at the notch on the base, thereby increasing the degree of inward shrinkage of the base and thus increasing the pre-tightening force of the quick-release device; at the same time, the quick-release device adopts a double-sided quick-release wrench design to replace the traditional quick-release device design of using a screwdriver to pre-tighten the bolts, making the quick-release device have a simpler disassembly and assembly process. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are designated as the same elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 A schematic diagram of the structure of the quick-release device and carbon tube provided in this embodiment of the utility model; Figure 2 An exploded view of the quick-release device and carbon tube provided in this embodiment of the utility model; Figure 3 This is an exploded view of the quick-release device provided in an embodiment of the present utility model; Figure 4 A schematic diagram of the pipe clamp provided in an embodiment of this utility model; Figure 5 A schematic diagram of the structure of the quick-release wrench provided in an embodiment of this utility model (I); Figure 6A schematic diagram (II) of the structure of the quick-release wrench provided in the embodiment of this utility model.

[0018] Figure label: 100. Quick-release device; 1. Pipe clamp; 11. Base; 12. Base body; 13. Locking element; 121. Accommodating space; 122. Notch; 123. Engaging groove; 131. Mounting slot; 1311. Arc concave surface; 1312. Third mounting through hole; 2. Quick-release wrench; 21. Cam; 22. Engaging protrusion; 23. Fitting part; 201. First through hole; 202. First mounting through hole; 211. Involute convex surface; 231. Opening; 3. Rotating shaft; 301. Second mounting through hole; 4. Fastening component; 41. Double-ended bolt; 42. Round head nut; 411. Base rod; 412. Threaded part; 200. Carbon nanotubes. Detailed Implementation

[0019] The present invention will now be described in detail with reference to specific embodiments. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0020] It should be noted that, unless otherwise expressly specified and limited, the terms "radial," "axial," "first direction," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. The terms "installation," "fitting," "connection," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixing" can be bolt fixing, snap-fit ​​fixing, or glue fixing. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature. "A plurality" or "several" means two or more. In addition, "and / or" includes any and all combinations of one or more of the related listed items. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] In this embodiment, the specific shape, structure, and size of the "quick-release device" are not limited. Those skilled in the art can selectively use any suitable implementation method according to actual needs.

[0022] Figure 1 A schematic diagram of the structure of the quick-release device and carbon tube provided in this embodiment of the present invention. Figure 2 This is an exploded view of the quick-release device and carbon nanotube provided in an embodiment of the present invention. Figure 3 An exploded view of the quick-release device provided in an embodiment of this utility model. Figure 4 This is a schematic diagram of the pipe clamp provided in an embodiment of the present utility model. Figure 5 A schematic diagram (I) of the quick-release wrench provided in the embodiment of this utility model. Figure 6 A schematic diagram (II) of the structure of the quick-release wrench provided in the embodiment of this utility model.

[0023] In the following description, such as Figures 1-6 As shown, the following situations exist: the axial direction of the base 12 and the axial direction of the carbon tube 200 are set as the X direction, the first direction and the axial direction of the third mounting through hole 1312 are set as the Y direction, the thickness direction of the base 11 is set as the Z direction, the side where the base 11 is located is set as "above", the side where the locking member 13 is located is set as "below", the direction of the quick-release wrench 2 around the pivot 3 towards the base 12 is set as "upward", the direction of the quick-release wrench 2 around the pivot 3 away from the base 12 is set as "downward", the inner diameter of the accommodating space 121 decreasing is set as "inward contraction", and the process of the accommodating space 121 returning to its initial position is set as "outward expansion". Among them, the X direction, Y direction and Z direction are orthogonal to each other, and the initial position is the position where the locking member 13 has not been squeezed by the quick-release wrench 2 or the position where the quick-release wrench 2 is released downward to the position where the radius of curvature of the involute convex surface 211 is the smallest.

[0024] Please see Figures 1-6 The quick-release device 100 is used to quickly install and remove carbon tubes in the power sleeve of a drone; in other words, the carbon tubes in the power sleeve of a drone can be installed and removed efficiently using this quick-release device 100.

[0025] A drone power kit is a power system suite that provides the power required for drone flight. It can include modules such as energy, drive, control and transmission to ensure that the drone can achieve stable flight and mission execution. Specifically, the drone power kit is the core subsystem of the drone and can directly affect the drone's performance (e.g., endurance, payload and stability).

[0026] Carbon fiber tubes are carbon fiber tubes made of carbon fiber composite materials. They have high strength, lightweight, corrosion resistance, and high temperature resistance, and are commonly used as frame or support structures in UAV power kits.

[0027] In some embodiments, combined with Figures 1-6 It is understood that the quick-release device 100 mentioned above includes: a pipe clamp 1, a pair of quick-release wrenches 2, a pair of rotating shafts 3, and multiple fastening components 4.

[0028] The pipe clamp 1 includes a base 11, a base body 12, and a pair of locking elements 13.

[0029] The substrate 12 is made of an elastic material, which allows the deformation of the substrate 12 during inward contraction or outward expansion to be elastic deformation, thereby preventing the substrate 12 from breaking during inward contraction or outward expansion.

[0030] In addition, the substrate 12 is in the shape of a hollow cylinder, and a receiving space 121 is formed inside the substrate 12. The substrate 12 is disposed on the base 11. Furthermore, at least a portion of the carbon nanotube 200 is clamped in the receiving space 121.

[0031] When the inner wall of the accommodating space 121 forms an interference fit with the outer cylindrical surface of the carbon tube 200, the carbon tube 200 is fixedly assembled on the quick-release device 100.

[0032] When the inner wall of the accommodating space 121 forms a clearance fit with the outer cylindrical surface of the carbon tube 200, the carbon tube 200 can be removed from the quick-release device 100.

[0033] In addition, a notch 122 is provided on the base 12, and the notch 122 and the base 11 are arranged opposite each other in the radial direction of the base 12.

[0034] It should be noted that a pair of locking members 13 are respectively disposed on the opposite two sides of the notch 122 in the Y direction, and both of the locking members 13 protrude from the outer cylindrical surface of the base 12.

[0035] It is understood that the locking member 13 has a mounting groove 131 on the side opposite to the notch 122 in the Y direction, and the mounting groove 131 has an arc concave surface 1311.

[0036] Specifically, one end of the quick-release wrench 2 is provided with a first through hole 201 and a cam 21 with an involute convex surface 211, and the first through hole 201 and the base circle of the cam 21 are coaxially arranged.

[0037] An involute convex surface is a convex surface designed with an involute curve, which is a curve formed by the trajectory of any point on a straight line when it rolls purely along a base circle. Of course, an involute convex surface can also be simply understood as an arc surface with a gradually increasing radius of curvature.

[0038] The involute convex surface 211 can press the arc concave surface 1311 as the radius of curvature increases, thereby forcing a pair of locking parts 13 to close together; specifically, as the quick-release wrench 2 rotates around the pivot 3 toward the direction of approaching the base 12, the radius of curvature of the involute convex surface 211 gradually increases.

[0039] The base circle of a cam is a circle with the center of rotation of the cam as its center and the radius of the point on the theoretical profile curve of the cam that is the least distant from the center of rotation (i.e., the minimum radial distance). In short, the base circle of a cam is the circle with the smallest radius on the cam.

[0040] Specifically, the rotating shaft 3 is inserted into the first through hole 201, and at least a portion of the fastening component 4 can pass through the quick-release wrench 2, the rotating shaft 3 and the locking component 13, so that the cam 21 of the quick-release wrench 2 is fitted into the mounting groove 131 of the locking component 13, thereby connecting the quick-release wrench 2 with the locking component 13. At this time, the involute convex surface 211 abuts against the arc concave surface 1311.

[0041] During the assembly of the quick-release wrench 2, the cam 21 of the quick-release wrench 2 is first assembled into the mounting groove 131 of the locking member 13, while the involute convex surface 211 abuts against the arc concave surface 1311. Then, the rotating shaft 3 is inserted into the first through hole 201 of the quick-release wrench 2. Finally, the quick-release wrench 2 and the rotating shaft 3 are fixed together on the locking member 13 by the fastening member 4. Inserting the rotating shaft 3 into the first through hole 201 allows the cam 21 and the rotating shaft 3 to form an eccentric mechanism. This allows the involute convex surface 211 of the cam 21 to squeeze or press the arc concave surface 1311 of a pair of locking members 13, thereby causing the pair of locking members 13 to drive the notch 122 to close together, thereby causing the accommodating space 121 to contract inward to achieve a clamping effect.

[0042] To further explain, the quick-release wrench 2 can rotate about the pivot 3 in a direction close to or away from the base 12. When the quick-release wrench 2 rotates about the pivot 3 in a direction away from the base 12, the receiving space 121 has a first dimension in the radial direction of the base 12.

[0043] It should be noted that when the quick-release wrench 2 rotates about the pivot 3 toward the base 12, the protrusions of the pair of quick-release wrenches 2 can force the pair of locking members 13 to close together, so that the receiving space 121 has a second dimension in the radial direction of the base 12, and the second dimension is smaller than the first dimension.

[0044] A pair of quick-release wrenches 2 can bring a pair of locking elements 13 together, thereby forcing the base 12 to contract inward and thus hold the carbon tube 200 placed in the receiving space 121.

[0045] Traditional quick-release devices typically use bolt pre-tightening to increase the clamping force on the carbon tube. However, this design requires users to use a screwdriver for pre-tightening every time they install or remove the carbon tube, making the operation of traditional quick-release devices cumbersome. However, this quick-release device 100 only requires fine-tuning the pre-tightening force between the round-head nut 42 and the double-ended bolt 41 to be suitable for carbon tubes within a certain tolerance range, thus avoiding insufficient clamping force due to large carbon tube tolerances. Furthermore, after adjusting the pre-tightening force between the round-head nut 42 and the double-ended bolt 41, the user can directly use the quick-release wrench 2 to disassemble and install the carbon tube 200, thereby simplifying the operation process of this quick-release device 100.

[0046] The quick-release device 100 adopts a double-sided quick-release wrench design (a pair of locking members 13 are respectively set on the opposite two sides of the notch 122 in the Y direction, and a pair of quick-release wrenches 2 are respectively set on a pair of locking members 13, this design is called the double-sided quick-release wrench design) to increase the deformation at the notch 122, thereby increasing the degree of inward contraction of the base 12, and thus increasing the preload of the quick-release device 100.

[0047] When carbon fiber tubes are installed using traditional quick-release devices, two to three or more devices are required. This results in operators having to open and close the device two to three times each time they install or remove the tube, leading to low installation and removal efficiency. However, since this quick-release device 100 only requires one device to install the carbon fiber tube 200, and it only has two quick-release wrenches 2, the installation of the carbon fiber tube 200 using this device does not require repeated opening and closing, thus improving the installation and removal efficiency of the carbon fiber tube 200 using this quick-release device 100.

[0048] In some embodiments, such as Figure 4 As shown, the base 11, the base body 12 and a pair of locking parts 13 are an integral structure.

[0049] In some embodiments, combined with Figures 1-4 It can be seen that the notch 122 is connected to the receiving space 121 in the radial direction of the base 12, and the notch 122 passes through the two opposite ends of the base 12 in the X direction.

[0050] In some embodiments, according to Figures 1-6 It can be seen that a pair of engaging grooves 123 are provided on the outer cylindrical surfaces of the two opposite sides in the Y direction of the substrate 12, and the pair of engaging grooves 123 both penetrate through the two opposite ends of the substrate 12 in the X direction.

[0051] Understandably, the end of the quick-release wrench 2 away from the cam 21 is provided with an engaging protrusion 22 that matches the engaging groove 123.

[0052] In some embodiments, please continue reading Figures 1-6 When the quick-release wrench 2 rotates around the pivot 3 in a direction away from the base 12 (or when the quick-release wrench 2 is released downwards), the engaging protrusion 22 and the engaging groove 123 disengage from each other.

[0053] To further explain, when the quick-release wrench 2 rotates around the pivot 3 toward the base 12 (or when the quick-release wrench 2 closes upward), the engaging protrusion 22 and the engaging groove 123 engage with each other to prevent the quick-release wrench 2 from coming loose.

[0054] In some embodiments, such as Figures 1-6 As shown, the quick-release wrench 2 has a contact portion 23, and the cam 21 and the engaging protrusion 22 are respectively disposed at the two ends of the contact portion 23.

[0055] In this application example, the fitting part 23 has a shape that is adapted to the outer cylindrical surface of the base 12. When the engaging protrusion 22 is engaged in the engaging groove 123, the fitting part 23 is tightly attached to the outer cylindrical surface of the base 12.

[0056] To make it easier for users to use traditional quick-release devices, designers typically design one side as a traditional quick-release wrench and the other side as a nut pre-tightening mechanism. Traditional quick-release wrenches are usually quite long and thin. While this design saves effort, the long and thin traditional quick-release wrench increases aerodynamic drag during drone flight, thus affecting the drone's flight performance. However, in this quick-release device 100, both quick-release wrenches 2 are integrated into the outer cylindrical surface of the base 12, which makes the quick-release device 100 smaller in size and avoids adding extra aerodynamic drag.

[0057] In some embodiments, according to Figures 1-6 It can be seen that the quick-release wrench 2 is provided with multiple first mounting through holes 202, the rotating shaft 3 is provided with multiple second mounting through holes 301, and the mounting groove 131 is provided with multiple third mounting through holes 1312.

[0058] Specifically, the axial direction of the first mounting through hole 202 is orthogonal to the axial direction of the first through hole 201, the axial direction of the second mounting through hole 301 is orthogonal to the axial direction of the rotating shaft 3, and the third mounting through hole 1312 passes through the locking member 13 on both opposite sides in the Y direction.

[0059] In some embodiments, by Figures 1-6 It can be seen that when the quick-release wrench 2 is connected to the locking member 13, the first mounting through hole 202, the second mounting through hole 301 and the third mounting through hole 1312 are coaxially arranged.

[0060] In some embodiments, refer to Figure 3 It can be seen that the fastening component 4 includes: a double-ended bolt 41 and two round-headed nuts 42.

[0061] The double-ended bolt 41 includes a base shank 411 and two threaded portions 412.

[0062] In addition, two threaded portions 412 are respectively provided at the two ends of the base rod 411 in its axial direction.

[0063] In addition, two round-headed nuts 42 are respectively provided on two threaded portions 412.

[0064] After the quick-release wrench 2 is closed upwards, a pair of locking parts 13 close together, which causes the receiving space 121 to shrink inwards, but at this time the round head nut 42 can still fit well with the first mounting through hole 202.

[0065] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 The fitting part 23 is provided with a plurality of openings 231, and each opening 231 corresponds to a first mounting through hole 202.

[0066] It should be noted that the threaded portion 412 passes through the third mounting through hole 1312, the second mounting through hole 301 and the first mounting through hole 202 until it enters the opening 231.

[0067] Understandably, the round head nut 42 is installed from the opening 231 to the threaded portion 412, and the user can properly pre-tighten both sides of the double-ended bolt 41 using the two round head nuts 42.

[0068] The opening 231 is designed to facilitate the installation of the round head nut 42 or to facilitate the user to pre-tighten the round head nut 42. At the same time, the opening 231 also facilitates the user to remove the round head nut 42.

[0069] In the embodiments of this application, there is no requirement for the order in which the pair of quick-release wrenches 2 close upwards; in other words, the pair of quick-release wrenches 2 can close simultaneously or not at the same time.

[0070] In summary, the quick-release device provided in this embodiment of the invention employs a double-sided quick-release wrench design to increase deformation at the notch on the base, thereby increasing the degree of inward contraction of the base and thus increasing the pre-tightening force of the quick-release device. Simultaneously, the use of a double-sided quick-release wrench design replaces the traditional quick-release device's use of a screwdriver to pre-tighten the bolts, resulting in a simpler assembly and disassembly process. Therefore, the quick-release device provided in this embodiment of the invention possesses a certain degree of novelty compared to traditional quick-release devices.

[0071] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and all of these fall within the protection scope of the present invention.

Claims

1. A quick-release device, characterized in that, include: A pipe clamp, the pipe clamp comprising a base, a base body, and a pair of locking elements; The base is in the shape of a hollow cylinder, and an internal space is formed inside the base. The base is placed on the base. The base has a notch, and the notch and the base are arranged opposite each other in the radial direction of the base; A pair of locking members are respectively disposed on opposite sides of the notch in a first direction, and both of the locking members protrude from the outer cylindrical surface of the base; The locking member has a mounting groove on the side opposite to the notch in the first direction, and the mounting groove has a concave arc surface. A pair of quick-release wrenches, one end of which is provided with a first through hole and a cam with an involute convex surface, and the first through hole and the base circle of the cam are coaxially arranged; A pair of rotating shafts and a plurality of fastening components, wherein the rotating shafts are inserted into the first through hole, and at least a portion of the fastening components can pass through the quick-release wrench, the rotating shafts and the locking member, such that the cam of the quick-release wrench is fitted into the mounting groove of the locking member, at which time the involute convex surface abuts against the arc concave surface; The quick-release wrench can rotate about the pivot in a direction toward or away from the base. When the quick-release wrench rotates about the pivot in a direction away from the base, the receiving space has a first dimension in the radial direction of the base. When the quick-release wrench rotates about the pivot towards the base, the protrusions of the pair of quick-release wrenches force the pair of locking members to close together, so that the receiving space has a second dimension in the radial direction of the base, and the second dimension is smaller than the first dimension; The first direction is orthogonal to the thickness direction of the base and the axial direction of the substrate.

2. The quick-release device according to claim 1, characterized in that, The base, the substrate, and the pair of locking elements are an integral structure.

3. The quick-release device according to claim 1, characterized in that, The notch communicates with the receiving space in the radial direction of the substrate, and the notch extends through the two opposite ends of the substrate in its axial direction.

4. The quick-release device according to claim 1, characterized in that, The base has a pair of engaging grooves on its two opposite outer cylindrical surfaces in the first direction, and both of the engaging grooves pass through the two opposite ends of the base in its axial direction. The quick-release wrench has an engagement protrusion at the end away from the cam that matches the engagement groove.

5. The quick-release device according to claim 4, characterized in that, When the quick-release wrench rotates around the pivot in a direction away from the base, the engaging protrusion and the engaging groove disengage from each other. When the quick-release wrench rotates around the pivot towards the base, the engaging protrusion and the engaging groove engage with each other.

6. The quick-release device according to claim 5, characterized in that, The quick-release wrench has a contact portion, and the cam and the engaging protrusion are respectively disposed at the two ends of the contact portion; The fitting part has a shape adapted to the outer cylindrical surface of the substrate. When the engaging protrusion is engaged in the engaging groove, the fitting part is tightly attached to the outer cylindrical surface of the substrate.

7. The quick-release device according to claim 6, characterized in that, The quick-release wrench is provided with multiple first mounting through holes, the rotating shaft is provided with multiple second mounting through holes, and the mounting groove is provided with multiple third mounting through holes; The axial direction of the first mounting through hole is orthogonal to the axial direction of the second mounting through hole, the axial direction of the second mounting through hole is orthogonal to the axial direction of the rotating shaft, and the axial direction of the third mounting through hole is parallel to the first direction.

8. The quick-release device according to claim 7, characterized in that, When the quick-release wrench is connected to the locking member, the first mounting through hole, the second mounting through hole and the third mounting through hole are coaxially arranged.

9. The quick-release device according to claim 7, characterized in that, The fastening components include: A double-ended bolt, the double-ended bolt comprising a base shank and two threaded portions; The two threaded portions are respectively disposed at the two ends of the base rod in its axial direction; Two round-headed nuts are respectively disposed on the two threaded portions.

10. The quick-release device according to claim 9, characterized in that, The fitting part is provided with a plurality of openings, and each of the openings corresponds to a first mounting through hole; The threaded portion passes through the third mounting through hole, the second mounting through hole, and the first mounting through hole until it enters the opening; The round-headed nut is installed from the opening to the threaded portion.

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