A quick release system

Abstract

The application relates to the technical field of photographic equipment, in particular to a quick release system which comprises a main body, a plurality of movable screw blocks with one end located in the main body and the other end protruding from the surface of the main body, the movable screw blocks are uniformly distributed around a central axis in a circumferential direction, the central axis is perpendicular to the surface of the main body, and the outside wall of one end of each movable screw block protruding from the surface of the main body is provided with a local thread; and the quick release system further comprises an opening and closing mechanism which connects the movable screw blocks and makes the movable screw blocks open or close around the central axis. The quick release system of the utility model is composed of only one single component, when the camera is repeatedly disassembled and assembled, the camera is separated from the main body as a whole, does not carry any other single part, is not easy to lose, and does not affect the holding feeling and weight of the camera.

Description

Technical Field

[0001] This application relates to the field of photographic equipment technology, and in particular to a quick-release system. Background Technology

[0002] Current mainstream camera quick-release systems consist of two core components: a quick-release plate connected to the camera body, and a base fixed to a support device such as a tripod or gimbal. The base typically features a standard Arca dovetail joint for a secure connection with external support devices like the tripod or gimbal; the quick-release plate, through various locking mechanisms, allows for rapid attachment and detachment from the base, enabling quick camera loading and unloading. Existing technologies improving the ease of quick-release primarily focus on refining the locking structure and operation methods of the quick-release system to enhance the efficiency of separation and locking.

[0003] While the dual-component quick-release system significantly improves camera mounting and dismounting efficiency, several problems have emerged in practical applications. Because the quick-release plate needs to be permanently fixed to the camera, and the base is connected to the support device, the quick-release plate is often removed along with the camera when it is disassembled. Firstly, the additional quick-release plate increases the camera's weight, affecting the grip and operational flexibility. Secondly, the quick-release plate is only connected to the camera with standard screws, which poses a risk of loosening and falling off during frequent shooting, and some users may intentionally disassemble it due to poor handling. Furthermore, the quick-release plate is small and easily lost once detached from the camera. More problematic is the inconsistency in interface standards among manufacturers' quick-release systems, making quick-release plates and bases from different manufacturers incompatible. If lost, users must purchase a matching model, greatly impacting the convenience and continuity of equipment use. Utility Model Content

[0004] Based on this, the present invention overcomes the problem that most quick-release systems consist of two parts, with the quick-release plate connected to the camera being used with the camera, affecting the user experience and being easily lost. The present invention provides a single-unit quick-release system. This quick-release system has only one component. When the camera is repeatedly disassembled and reassembled, the entire camera detaches from the main body without any other individual parts attached. This makes it less likely to be lost and does not affect the camera's grip or weight.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A quick-release system includes a main body, a plurality of movable screw blocks with one end located inside the main body and the other end protruding from the surface of the main body, the plurality of movable screw blocks being evenly distributed circumferentially around a central axis perpendicular to the surface of the main body, and each movable screw block having a partial thread on the outer side wall of the end protruding from the surface of the main body; and further includes an opening and closing mechanism that connects the plurality of movable screw blocks and causes them to open or close around the central axis.

[0006] In use, this invention is fixedly connected to an external support such as a gimbal or tripod. The camera and external support are connected via several movable screw blocks, one end of which protrudes from the main body and connects to the camera's standard screw hole. The quick-release operation of this invention utilizes the interaction between the opening / closing mechanism and the movable screw blocks to achieve rapid camera disassembly and connection: when the movable screw blocks are in a retracted state under the action of the opening / closing mechanism, the ends protruding from the main body form a closed profile, allowing for quick insertion or disengagement of the movable screw blocks into the camera's standard screw hole; the opening / closing mechanism abuts the movable screw blocks and opens them away from the central axis until an intermittent circular profile is formed. The partial threads on the outer walls of the movable screw blocks can then engage with or lock into the camera's standard screw hole, achieving rapid camera connection and disassembly.

[0007] This invention abandons the traditional dual-component architecture, featuring only a single component. The connection to the external support and the camera are all integrated into a single main body. This single-component design allows the camera to be completely detached during frequent assembly and disassembly without any additional individual parts. This reduces the risk of loss and does not affect the camera's grip or weight. The design eliminates the risk of lost parts and ensures the original feel of the camera when held, bringing a revolutionary change to quick-release technology for photographic equipment and significantly improving user experience and safety.

[0008] It should also be noted that traditional quick-release plates with integrated screws require a screwdriver to tighten them one turn at a time to secure them to the camera. The screws are small, making this process time-consuming, especially in harsh environments such as cold or windy weather, where tightening screws outdoors is quite difficult. This application eliminates the need for a separate screwdriver. After aligning and inserting the standard screw hole on the camera with the retractable movable screw block, the movable screw block can be opened around the central axis simply by adjusting the opening and closing mechanism, achieving quick engagement. Furthermore, it allows for quick operation in challenging shooting positions, such as wall-mounted or tilted camera positions, greatly improving convenience and practicality.

[0009] Furthermore, the opening and closing mechanism includes a spring-pressing mechanism that connects each of the movable screw blocks and retracts them toward the central axis, and a push-opening mechanism that movably abuts against a plurality of the movable screw blocks and opens them away from the central axis.

[0010] In this invention, a spring-pressing mechanism is used to abut against each movable screw block, continuously providing compressive force, which can maintain the function of the movable screw blocks retracting together. Meanwhile, a push-opening mechanism pushes open each movable screw block, causing each screw block to open away from the central axis against the force of the spring-pressing mechanism. Therefore, by using the cooperation of the spring-pressing mechanism and the push-opening mechanism, the opening, closing and retraction of several movable screw blocks can be realized.

[0011] Furthermore, each of the movable screw blocks has a guide protrusion at one end on the main body, and the main body has a guide groove for the guide protrusion to slide, the axis of the guide groove being perpendicular to the central axis. Since the movable screw blocks need to be frequently retracted and opened, and the size of the end of the movable screw block extending beyond the main body is small, it is necessary to ensure the precision and stability of its retraction and opening movement. The guide groove and guide protrusion on the main body cooperate to provide guidance and limitation, ensuring stable movement in the retraction and opening directions.

[0012] Furthermore, the spring-pressing mechanism includes a first spring connected at one end to the movable screw block and at the other end to the main body. When the movable screw blocks are in a retracted state, the first spring is in a compressed state. It should be noted that during the retraction of the movable screw blocks, the spring force of the first spring applies a pushing force to the movable screw blocks, enabling them to retract even when the opening mechanism is no longer in effect. When the ends of the movable screw blocks are brought together, the first spring remains compressed and continues to apply a pushing force to the movable screw blocks. This is to maintain the retracted state and ensure that the screws do not open or loosen during rapid insertion and removal from the camera, thus ensuring the effectiveness of rapid insertion and removal.

[0013] Furthermore, the opening mechanism includes a top block whose axis overlaps with the central axis. The end of the top block facing the movable screw block is the ejection end, and the end of the top block facing away from the movable screw block is the inclined end. The inner side of a plurality of movable screw blocks is provided with an inclined inner wall that cooperates with the outer wall of the ejection end. It also includes a movable block that is limited to moving within the main body, the movable block having a sloping protrusion corresponding to the slope of the sloping end, the sloping end slidingly abutting against the sloping protrusion; It also includes an adjusting rod with one end threadedly connected to the movable block and the other end extending to the outside of the main body, and the movable block is provided with a threaded hole that interacts with the adjusting rod.

[0014] It should be noted that this utility model utilizes the screw drive principle of the adjusting rod and the threaded hole. The adjusting rod can control the left and right movement of the movable block, thereby allowing the inclined protrusion on the movable block to slide relative to the inclined end of the top block. Since the top block is limited to the middle of several movable screw blocks and can only move up and down along its own axis, it will be pushed by the left and right movement of the inclined protrusion under the abutment of the inclined protrusion, thus pushing it upward on the central axis until the ejected end contacts the inner wall of the inclined surface of the movable screw block and pushes several movable screw blocks outward. Under the limiting action of the main body, several movable screw blocks open outward around the central axis and remain open under the abutment of the top block. At this time, the outer partial thread of the movable screw block can engage or mesh with the thread of the standard screw hole of the camera. The structure of the ejected end is not limited; it can be any one of cone, frustum, cylinder, rectangle, or sphere. As long as the outer wall of the ejected end and the inclined inner wall of the movable screw block are in balanced contact, the purpose of this application can be achieved.

[0015] Furthermore, the adjusting rod is provided with a knob handle at one end located outside the main body. The outer wall of the knob handle may also be provided with several anti-slip textures.

[0016] Furthermore, the opening mechanism also includes a tension adjusting nut, one end of which passes through the main body and movably abuts against the outer wall of the adjusting rod. The tension adjusting nut can movably abut against the outer side of the adjusting rod, allowing adjustment of the damping when the adjusting rod rotates, thus facilitating different users to adjust to their preferred operating feel.

[0017] Furthermore, the opening mechanism also includes two second springs symmetrically arranged on both sides of the adjusting rod. One end of the second spring is connected to the movable block, and the other end is connected to the main body. When several movable screw blocks are retracted, the second spring is in a compressed state. The function of the second spring in the direction of movement of the movable block is explained here: it mainly ensures the smoothness of the movable block's left and right movement and counteracts the slight displacement of the movable block caused by the rotation of the adjusting rod. When multiple movable screw blocks are retracted, the second spring is in a compressed state, continuously outputting restoring force. Subsequently, the adjusting rod rotates to push out the movable screw blocks. During this stage, the second spring remains compressed, maintaining the balance and stability of the movable block through its spring-loaded action, while reducing movement resistance, and gradually returning to its natural state as it is pushed out. When the adjusting rod rotates in the opposite direction to release the push-out, the second spring is compressed again due to the movement of the movable block, continuing to ensure smooth movement of the movable block by its spring-loaded characteristic, avoiding wobbling or displacement.

[0018] Furthermore, the opening mechanism also includes a guide plate located between the main body and the movable block. One end of the guide plate is limited to both sides of the intersection of the inclined end and the inclined protrusion, allowing the top block to move only on its axis.

[0019] It should be noted that the ejector end of the top block extends out of the surface of the main body and is located inside the several movable screw blocks. The inclined end of the top block slides and abuts against the inclined protrusion inside the main body. Therefore, the top block has a certain space for movement in the vertical direction. The inclined protrusion exerts a frictional force on the inclined end in the horizontal direction. Therefore, in order to prevent the top block from shifting or moving in the horizontal direction during the sliding process, a guide plate is set to reasonably limit the movement space of the top block, ensuring that the top block can only move on its axis, thereby ensuring the stable ejection of the top block and the uniform opening of the several movable screw blocks.

[0020] Furthermore, the main body is also provided with an Arca dovetail groove, and an anti-slip strip is provided on the surface of the protruding side of the movable screw block. Currently, most external support components such as gimbals or tripods on the market use Arca standard interfaces. By using the Arca dovetail groove of the main body to fix the connection with external support components such as gimbals or tripods, it can be adapted to most external support components, greatly improving the versatility of this utility model. The protruding side of the movable screw block is used for quick assembly and disassembly with the camera. The anti-slip strip on this side ensures friction between the camera end and the main body of this utility model, improving the stability of the connection.

[0021] Furthermore, the main body also has several hollowed-out areas. These hollowed-out areas reduce the overall weight of the application, achieving a lighter design that is easier for consumers to carry and use.

[0022] Compared with the prior art, the beneficial effects of this utility model are: (1) When this utility model is used, the main body is fixedly connected to an external support such as a gimbal or tripod, and the end of one of the movable screw blocks protruding from the surface of the main body is connected to the standard screw hole of the camera, thereby realizing the transfer between the camera and the external support. The quick-release operation of this utility model realizes the quick disassembly and connection of the camera through the action between the opening and closing mechanism and the movable screw blocks: when the movable screw blocks are in the retracted state under the action of the opening and closing mechanism, the end of one of the movable screw blocks protruding from the surface of the main body forms a closed contour. At this time, the ends of the movable screw blocks can be quickly inserted or disengaged from the standard screw hole of the camera; the opening and closing mechanism abuts the movable screw blocks and opens them away from the central axis until an intermittent circular contour is formed. The local threads on the outer side wall of the movable screw blocks can be inserted into the standard screw hole of the camera and mesh or engage with the internal thread of the standard screw hole, thereby realizing the quick connection and quick disassembly of the camera.

[0023] (2) This utility model abandons the traditional dual-component architecture and has only one single component. The connection with the external support and the connection mechanism with the camera are all concentrated on one main body. With only a single component design, the camera can be completely detached during frequent camera assembly and disassembly without any other individual parts attached. It is not easy to lose, and it will not affect the grip and weight of the camera. No extra parts need to be carried. This design not only eliminates the risk of losing parts from the root, but also ensures the original grip of the camera. It brings a revolutionary change to the quick-release technology of photography equipment and significantly improves the user's operating experience and safety.

[0024] (3) This utility model eliminates the need to carry a screwdriver and use it for tightening. After aligning and inserting the standard screw hole of the camera with the movable screw block of this application, the movable screw block can be opened around the central axis by adjusting the opening and closing mechanism to achieve rapid engagement. In addition, it can also be operated quickly in some tricky shooting positions, such as wall-mounted or tilted positions, which greatly improves convenience and practicality. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the open state of the movable screw block in one embodiment; Figure 2 for Figure 1 Top view; Figure 3 This is a three-dimensional structural diagram of the retracted state of the movable screw block in one embodiment; Figure 4 for Figure 3 Top view; Figure 5 for Figure 2 Sectional view at point AA; Figure 6 for Figure 4 Sectional view at point BB; Figure 7 This is a schematic diagram illustrating the engagement of the movable screw block and the top block in one embodiment; Figure 8 This is a schematic diagram of the interaction between the movable block and the guide plate in one embodiment.

[0026] 1-Main body, 11-Guide groove, 12-Aka dovetail groove, 13-Anti-slip strip, 15-Strip-shaped hollow, 16-Through hole, 2-Modible screw block, 21-Guide protrusion, 20-Inner wall of inclined surface, 3-Pressure spring mechanism, 4-Push-opening mechanism, 41-Push block, 411-Push-out end, 412-Inclined end, 42-Modible block, 421-Inclined protrusion, 43-Adjusting rod, 44-Knob handle, 45-Tightening adjustment nut, 46-Second spring, 47-Guide plate, 100-Intermittent circular contour, 200-Closed contour. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Example 1 like Figures 1 to 6 As shown, a quick-release system includes a main body 1, a plurality of movable screw blocks 2 with one end located inside the main body 1 and the other end protruding from the surface of the main body 1, the plurality of movable screw blocks 2 being evenly distributed circumferentially around a central axis, the central axis being perpendicular to the surface of the main body 1, and each movable screw block 2 having a partial thread on the outer side wall of the end protruding from the surface of the main body 1; it also includes an opening and closing mechanism that connects the plurality of movable screw blocks 2 and causes them to open or close around the central axis.

[0031] In this embodiment, the main body 1 is fixedly connected to an external support such as a gimbal or tripod, and one end of several movable screw blocks 2 protruding from the surface of the main body 1 is connected to the standard screw hole of the camera, thereby realizing the transfer between the camera and the external support.

[0032] In this embodiment, the quick-release operation achieves rapid disassembly and connection of the camera through the interaction between the opening and closing mechanism and several movable screw blocks 2: such as Figure 3 As shown, when the movable screw blocks 2 are in a retracted state under the action of the opening and closing mechanism, one end of the movable screw blocks 2 protrudes from the surface of the main body 1 to form a closed contour 200. At this time, the ends of the movable screw blocks 2 can be quickly inserted into or disengaged from the standard screw holes of the camera; as shown... Figure 2 As shown, the opening and closing mechanism abuts against several movable screw blocks 2 and opens them away from the central axis until an intermittent circular outline 100 is formed. The local threads on the outer side wall of the several movable screw blocks 2 can be inserted into the standard screw hole of the camera and engage or snap with the internal thread of the standard screw hole, thereby realizing the quick connection and quick disassembly of the camera.

[0033] like Figure 5 and Figure 6 As shown, the opening and closing mechanism includes a spring-pressing mechanism 3 that connects each movable screw block 2 and causes it to retract toward the central axis, and a push-opening mechanism 4 that has one end in contact with several movable screw blocks 2 and causes them to open away from the central axis.

[0034] In this embodiment, the spring-pressing mechanism 3 abuts against each movable screw block 2, continuously providing compression force, which can maintain the mutual closing of the movable screw blocks 2. Meanwhile, the opening mechanism 4 opens each movable screw block 2, causing each screw block to open away from the central axis against the action of the spring-pressing mechanism 3. Therefore, by using the cooperation of the spring-pressing mechanism 3 and the opening mechanism 4, the opening, closing and closing of several movable screw blocks 2 can be realized.

[0035] like Figure 1 and 7 As shown, each movable screw block 2 has a guide protrusion 21 at one end on the main body 1. The main body 1 has a guide groove 11 for the guide protrusion 21 to slide, and the axis of the guide groove 11 is perpendicular to the central axis. Since the movable screw block 2 needs to be frequently retracted and opened, and the size of the end of the movable screw block 2 extending out of the main body 1 is small, it is necessary to ensure that its retraction and opening movement is accurate and stable. The guide groove 11 and the guide protrusion 21 on the main body 1 cooperate to guide and limit the movement, so as to ensure its stable movement in the retraction and opening direction.

[0036] like Figure 5 and Figure 6As shown, the spring-pressing mechanism 3 includes a first spring connected at one end to the movable screw block 2 and at the other end to the main body 1. When the movable screw blocks 2 are in the retracted state, the first spring is in the compressed state. It should be noted that during the retraction of the movable screw blocks 2, the first spring exerts a pushing force on the movable screw blocks 2, enabling them to retract even when the opening mechanism 4 is no longer in effect. When the movable screw blocks 2 are retracted to the point where their ends abut together, the first spring remains in the compressed state and continues to exert a pushing force on the movable screw blocks 2. This is to maintain the retracted state and ensure that the screw blocks do not open or loosen during rapid insertion and removal from the camera, thus ensuring the effectiveness of rapid insertion and removal.

[0037] The advantages of this embodiment are as follows: This embodiment abandons the traditional dual-component architecture and has only a single component. The connection with the external support and the connection mechanism with the camera are all concentrated on a single main body 1. With only a single component design, the camera can be completely detached during frequent camera assembly and disassembly without any other individual parts attached. It is not easy to lose and will not affect the grip and weight of the camera. There is no need to carry any extra parts. This design not only eliminates the risk of losing parts from the root, but also ensures the original grip feel of the camera. It brings a revolutionary change to the quick-release technology of photographic equipment and significantly improves the user's operating experience and safety.

[0038] The advantages of this embodiment also include: Traditionally, the integrated screws on quick-release plates require a screwdriver to tighten them one turn at a time to secure them to the camera. The screws are small, and this process is time-consuming, especially in harsh environments such as cold or windy weather, where tightening screws outdoors is quite difficult. This application eliminates the need to carry a screwdriver; after aligning and inserting the standard screw hole of the camera with the retractable movable screw block 2, the movable screw block can be opened around the central axis simply by adjusting the opening and closing mechanism, achieving rapid engagement. Furthermore, it allows for quick operation in challenging shooting positions, such as wall-mounted or tilted camera positions, greatly improving convenience and practicality.

[0039] Example 2 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 5 and Figure 7 As shown, the opening mechanism 4 includes a top block 41 whose axis overlaps with the central axis. The end of the top block 41 facing the movable screw block 2 is the ejection end 411, and the end of the top block 41 facing away from the movable screw block 2 is the inclined end 412. The inner side of several movable screw blocks 2 is provided with an inclined inner wall 20 that cooperates with the outer wall of the ejection end 411. In this embodiment, the ejector end 411 is frustum-shaped, and the inner side of the movable screw block 2 is provided with an arc-shaped inclined inner wall that matches the outer wall of the frustum-shaped ejector end 411.

[0040] like Figure 5 and Figure 8 As shown, it also includes a movable block 42 that is limited to moving within the main body 1. The movable block 42 is provided with a slope protrusion 421 that corresponds to the slope of the slope end 412. The slope end 412 and the slope protrusion 421 slide against each other. like Figure 5 and Figure 6 As shown, it also includes an adjusting rod 43 with one end threadedly connected to the movable block 42 and the other end extending to the outside of the main body 1. The movable block 42 is provided with a threaded hole that interacts with the adjusting rod 43.

[0041] It should be noted that this embodiment utilizes the screw drive principle of the adjusting rod 43 and the threaded hole. The adjusting rod 43 can control the left and right movement of the movable block 42, thereby causing the inclined protrusion 421 on the movable block 42 to slide relative to the inclined end 412 of the top block 41. Since the top block 41 is limited to the middle of the movable screw blocks 2 and can only move up and down along its own axis, it will be pushed by the left and right movement of the inclined protrusion 421 under the abutment of the inclined protrusion 421, thus pushing it upward on the central axis until the ejected end 411 contacts the inclined inner wall 20 of the movable screw block 2 and pushes the movable screw blocks 2 outward. Under the limiting action of the main body 1, the movable screw blocks 2 open outward around the central axis and remain open under the abutment of the top block 41. At this time, the outer partial thread of the movable screw block 2 can be engaged or meshed with the thread of the standard screw hole of the camera.

[0042] like Figure 6 As shown, the adjusting rod 43 is also provided with a knob handle 44 at one end located outside the main body 1. The outer wall of the knob handle 44 may also be provided with several anti-slip textures.

[0043] like Figure 6 As shown, the opening mechanism 4 also includes a tension adjusting nut 45, one end of which passes through the main body 1 and movably abuts against the outer side wall of the adjusting rod 43. The tension adjusting nut 45 can movably abut against the outer side of the adjusting rod 43, and can adjust the damping when the adjusting rod 43 rotates, thereby making it convenient for different users to adjust to their own operating feel.

[0044] like Figure 5As shown, the opening mechanism 4 also includes two second springs 46 symmetrically arranged on both sides of the adjusting rod 43. One end of the second spring 46 is connected to the movable block 42, and the other end is connected to the main body 1. When several movable screw blocks 2 are retracted, the second spring 46 is in a compressed state. The function of the second spring 46 in the direction of movement of the movable block 42 is explained here: it mainly ensures the smoothness of the left and right movement of the movable block 42 and counteracts the slight displacement of the movable block 42 caused by the rotation of the adjusting rod 43. When multiple movable screw blocks 2 are retracted, the second spring 46 is in a compressed state, continuously outputting restoring force. Afterward, the adjusting rod 43 rotates to push out the movable screw blocks 2. During this stage, the second spring 46 remains compressed, maintaining the balance and stability of the movable block 42 through its spring-loaded action, while reducing movement resistance, and gradually returning to its natural state as it is pushed out. When the adjusting rod 43 rotates in the opposite direction to release the push-out, the second spring 46 is compressed again due to the movement of the movable block 42, continuing to ensure the smooth movement of the movable block 42 by virtue of its spring-loaded characteristic, avoiding wobbling or displacement.

[0045] like Figure 5 and Figure 8 As shown, the top opening mechanism 4 also includes a guide plate 47, which is located between the main body 1 and the movable block 42. One end of the guide plate 47 is limited to both sides of the junction of the inclined end 412 and the inclined protrusion 421, so that the top block 41 can only move on its axis.

[0046] It should be noted that the ejector end 411 of the top block 41 extends out of the surface of the main body 1 and is located inside the several movable screw blocks 2. The inclined end 412 of the top block 41 slides and abuts against the inclined protrusion 421 inside the main body 1. Therefore, the top block 41 has a certain space for movement in the vertical direction. The inclined protrusion 421 exerts a frictional force on the inclined end 412 in the horizontal direction. Therefore, in order to prevent the top block 41 from shifting or moving in the horizontal direction during the sliding process, a guide plate 47 is set to reasonably limit the movement of the top block 41, ensuring that the top block 41 can only move on its axis, thereby ensuring the stable ejection of the top block 41 and the even opening of the several movable screw blocks 2.

[0047] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0048] Example 3 This embodiment is similar to Embodiment 1, except that in this embodiment: like Figure 1 and Figure 3 As shown, the main body 1 is also provided with an Aca dovetail groove 12, and an anti-slip strip 13 is also provided on the surface of the protruding side of the movable screw block 2.

[0049] Currently, most external support components such as gimbals or tripods on the market use the Arca standard interface. The Arca dovetail groove 12 of the main body 1 is used for fixed connection with the external support component, making it compatible with most external support components and greatly improving the versatility of this embodiment. The protruding side of the movable screw block 2 is used for quick assembly and disassembly from the camera. An anti-slip strip 13 is provided on this side to ensure friction between the camera end and the main body 1 of this embodiment, improving connection stability.

[0050] In this embodiment, the main body 1 is also provided with several hollow areas. The hollow areas on the main body 1 are used to reduce the overall weight of this embodiment, achieving a lighter design that is easier for consumers to carry and use.

[0051] like Figure 1 and Figure 3 As shown, the hollow area includes a strip-shaped hollow 15 opened on one side of the main body. The main body 1 part on the side of the strip-shaped hollow 15 is a long and thin side. The strip-shaped hollow 15 forms a loop that can be used to hang ropes. like Figure 1 and Figure 3 As shown, the hollow area also includes several through holes 16 that pass through both sides of the main body 1. These through holes 16 avoid the movable screw block 2, the spring pressing mechanism 3, the opening mechanism 4 and the dovetail groove on the main body 1, in order to reduce the overall weight of the main body 1 and achieve a lightweight design.

[0052] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A quick-release system, characterized in that, The device includes a main body (1), a plurality of movable screw blocks (2) with one end located inside the main body (1) and the other end protruding from the surface of the main body (1), the plurality of movable screw blocks (2) being evenly distributed circumferentially around a central axis, the central axis being perpendicular to the surface of the main body (1), and each movable screw block (2) having a partial thread on the outer side wall of the end protruding from the surface of the main body (1); it also includes an opening and closing mechanism that connects the plurality of movable screw blocks (2) and causes them to open or close around the central axis.

2. The quick-release system according to claim 1, characterized in that, The opening and closing mechanism includes a spring-pressing mechanism (3) that connects each of the movable screw blocks (2) and causes them to converge toward the central axis, and a push-opening mechanism (4) that has one end in contact with a plurality of the movable screw blocks (2) and causes them to open away from the central axis.

3. The quick-release system according to claim 2, characterized in that, Each of the movable screw blocks (2) is provided with a guide protrusion (21) at one end on the main body (1). The main body (1) is provided with a guide groove (11) for the guide protrusion (21) to slide. The axis of the guide groove (11) is perpendicular to the central axis.

4. The quick-release system according to claim 2, characterized in that, The spring-pressing mechanism (3) includes a first spring with one end connected to the movable screw block (2) and the other end connected to the main body (1). When the movable screw blocks (2) are in a retracted state, the first spring is in a compressed state.

5. A quick-release system according to claim 2, characterized in that, The opening mechanism (4) includes a top block (41) whose axis overlaps with the central axis. One end of the top block (41) facing the movable screw block (2) is the ejection end (411), and the other end of the top block (41) facing away from the movable screw block (2) is the inclined end (412). The inner side of several movable screw blocks (2) is provided with an inclined inner wall (20) that cooperates with the outer wall of the ejection end (411). It also includes a movable block (42) that is limited to moving within the main body (1), the movable block (42) having a sloping protrusion (421) corresponding to the slope of the sloping end (412), the sloping end (412) slidingly abutting against the sloping protrusion (421); It also includes an adjusting rod (43) with one end threadedly connected to the movable block (42) and the other end extending to the outside of the main body (1), and the movable block (42) is provided with a threaded hole that interacts with the adjusting rod (43).

6. A quick-release system according to claim 5, characterized in that, The adjusting rod (43) is also provided with a knob handle (44) at one end located outside the main body (1).

7. A quick-release system according to claim 5, characterized in that, The opening mechanism (4) also includes a tension adjustment nut (45) with one end penetrating through the main body (1) and movably abutting against the outer side wall of the adjusting rod (43).

8. A quick-release system according to claim 5, characterized in that, The opening mechanism (4) also includes two second springs (46) symmetrically arranged on both sides of the adjusting rod (43). One end of the second spring (46) is connected to the movable block (42) and the other end is connected to the main body (1). When the movable screw blocks (2) are closed, the second spring (46) is in a compressed state.

9. A quick-release system according to claim 5, characterized in that, The top opening mechanism (4) also includes a guide plate (47), which is located between the main body (1) and the movable block (42). One end of the guide plate (47) is limited to both sides of the junction of the inclined end (412) and the inclined protrusion (421), so that the top block (41) can only move on its axis.

10. A quick-release system according to claim 1, characterized in that, The main body (1) is also provided with an Aka dovetail groove (12), and an anti-slip strip (13) is provided on the surface of the protruding side of the movable screw block (2); the main body (1) is also provided with several hollow areas.

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