Locking buckle for turnover mechanism

Abstract

The utility model belongs to the technical field of locking connecting pieces, and particularly relates to a locking buckle for a turnover mechanism. The wheel with the rotation center not coincident with the geometric center is installed on the rotating shaft, the rotating shaft is fixed to the part II, the handle controls the eccentric wheel to rotate around the rotation center, and the rotating shaft on the rotation center is fixedly connected with the part II, so that the position of the rotating shaft is fixed; in other words, relative movement of the tail end of the handle and the pull ring is downward movement, the locking hook is driven to rotate around the hinge shaft at the end of the locking hook, the other end, away from the hinge shaft, of the locking hook rotates downward and is connected with the wedge-shaped groove in the end of the component I in a buckled mode, and locking of the rotating connection relation of the component I and the component II is achieved. And due to the self-locking performance of the eccentric wheel, the eccentric wheel can be automatically kept at the locking position when rotating to the locking position. The two parts are effectively connected, and the reliability of connection in the opening and closing state is fully guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of locking connectors, and in particular relates to a locking buckle for a flip mechanism. Background Art

[0002] With the development of science and technology, people have put forward more demands on the functions of products. The products used must not only meet various functions, but also have the characteristics of convenience, lightness, safety and applicability. In this context, flipping mechanisms are widely used in products from all walks of life, such as flip folding ladders, folding doors and windows, and in mechanical processing. Usually, a simple connection method can achieve the flipping function, but in some special and important fields, such as boarding ladders, the requirements for flipping mechanisms are higher. Common locking structures include threaded locking, bevel locking, etc. These locking mechanisms have many defects, such as complex design, too many intermediate links, short service life, easy jamming during use, lack of protection mechanism, etc., and are prone to breakage and falling off during use, which increases the risk of operation and easily causes accidents.

[0003] The above information disclosed in the above background technology section is only used to enhance the understanding of the background technology of the technology described in this article. Therefore, the background technology may contain certain information that does not form the prior art known in this country to those skilled in the art. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the utility model proposes a locking buckle for a flip mechanism. It has a simple structure, convenient operation, large clamping force and very good self-locking performance. Through the self-locking performance of the eccentric wheel, the flip mechanism has a high-strength clamping force in the locked state of the locking buckle, which can effectively ensure the safety during the operation.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A locking buckle for a flip mechanism, used for locking parts I and II at the hinge, both parts I and II are rod-shaped structures, and their connection is rotatably connected through a hinge axis. When parts I and II are on the same straight line, the locking buckle locks the rotational connection relationship between parts I and II, and is characterized by comprising:

[0007] A locking hook, which is arranged on the upper part of component I and component II, one end of which is hingedly connected to the end of component II that is rotatably connected, and the end of component I is provided with a wedge-shaped groove that is buckled with the locking hook;

[0008] A lower pull ring, the lower pull ring is connected to the locking hook through a connecting piece, and the upper end of the connecting piece is fixed to the middle part of the locking hook;

[0009] The eccentric rotating mechanism is arranged at the lower end of the lower pull ring and is connected to the lower part of the component II through a rotating shaft (rotationally connected).

[0010] The locking hook includes an integrally formed rotating part, a connecting part and a clamping part; the rotating part is hingedly connected to the end of component II for rotation, and the clamping part is a downwardly arranged protrusion, which is clamped and matched with the wedge-shaped groove at the end of component I.

[0011] The connecting piece includes an internal threaded sleeve and a countersunk screw. A countersunk screw hole is opened in the middle of the connecting part. The countersunk screw is installed in the countersunk screw hole. One end of the threaded sleeve is threadedly connected to the countersunk screw, and the other end is threadedly connected to the upper end of the eccentric rotating mechanism.

[0012] The lower pull ring comprises an integrally formed pull ring and a rod, the upper part of the rod is provided with an external thread matched with the internal thread sleeve, and the middle part of the pull ring is provided with a circular hole.

[0013] The eccentric rotating mechanism includes a handle and an eccentric wheel; a double circular ring structure is provided at the end of the handle, a mounting groove is provided in the middle of the double circular arc structure, the eccentric wheel is embedded in the mounting groove, the pull ring at the lower end of the lower pull ring is inserted in the double circular ring structure and sleeved on the eccentric wheel, an eccentric through hole is provided in the eccentric wheel, a rotating shaft is installed in the eccentric through hole, and both ends of the rotating shaft are fixedly connected to component II.

[0014] Rotating shaft caps are riveted at both ends of the rotating shaft.

[0015] The cross-sectional shape of the eccentric wheel is a combination of a large semicircular arc and a straight line, and the shape of the mounting groove is adapted to the shape of the eccentric wheel.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] In general, compared with the prior art, the utility model provides a locking buckle for a flip mechanism. The eccentric structure principle is adopted, by installing a wheel whose rotation center and geometric center do not coincide on the rotating shaft, the rotating shaft is fixed on component II, and the handle controls the eccentric wheel to rotate around the rotation center. Since the rotating shaft on the rotation center is fixedly connected to component II, the position of the rotating shaft is fixed, that is, the relative movement of the end of the handle and the pull ring is to move downward, driving the locking hook to rotate around the hinge shaft at its end, and the other end of the locking hook away from the hinge shaft rotates downward, and is buckled and connected with the end wedge groove of component I, so as to realize the locking of the rotation connection relationship between component I and component II. Due to the self-locking performance of the eccentric wheel, when the eccentric wheel rotates to the locking position, it will automatically remain in this position. It has the characteristics of simple use, safe and reliable structure, and convenient operation. It can be operated without additional tools, and the tightness can be adjusted arbitrarily according to the use requirements, so that the two parts are effectively connected and the reliability of the connection in the opening and closing state is fully guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the locking buckle on the flip mechanism in the utility model;

[0020] Figure 2 It is a structural schematic diagram of the locking buckle in the utility model;

[0021] Figure 3 It is an exploded schematic diagram of the locking buckle in the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the locking hook in the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the lower pull ring in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the deflection wheel in the utility model;

[0025] Figure 7 It is a structural schematic diagram of the handle in the utility model. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0027] In the flip mechanism, component I1 and component II2 are usually in the form of a rod-shaped structure, which are connected by a hinge axis for rotation. In the prior art, the locking mechanism often cannot effectively prevent the relative rotation of component I1 and component II2 when they are in the same linear position, resulting in safety hazards during use. The utility model aims to provide a mechanism that can reliably lock component I1 and component II2 to improve the safety and stability of their use.

[0028] This embodiment provides a locking buckle for a flip mechanism, see Figure 1 , used to lock the parts Ⅰ1 and Ⅱ2 at the hinge, and can lock the rotational connection between parts Ⅰ1 and Ⅱ2 when they are in the same straight line, so as to prevent them from relative rotation;

[0029] See also Figure 2 , 3 The specific structure of the locking buckle 3 is composed of a locking hook 4, a lower pull ring 5, and an eccentric rotating mechanism 7 that drives the lower pull ring 5 to move downward.

[0030] The specific implementation is as follows:

[0031] Locking hook 4: The locking hook 4 is arranged on the upper part of component I1 and component II2, one end of which is connected to the hinge of component II2, and the other end of which is provided with a protrusion 405 engaged with a wedge-shaped groove 404 on component I. Function: When component I1 and component II2 are in the same straight line, the locking hook 4 can effectively lock their rotation relationship to prevent relative rotation.

[0032] The lower pull ring 5 is connected to the locking hook 4 through a connecting piece 6, and the upper end of the connecting piece 6 is fixed to the middle of the locking hook 4. When component I1 and component II2 are in the same straight line, the locking hook 4 is pulled downward by the lower pull ring 5, and the locking hook 4 rotates around the hinge axis at its end. The other end of the locking hook 4 away from the hinge axis rotates downward and is engaged with the end wedge groove 404 of component I1 to achieve locking of the rotational connection relationship between component I1 and component II2.

[0033] The eccentric rotating mechanism 7 is arranged at the lower end of the lower pull ring 5 and is rotatably connected to the lower part of the component II 2 through the rotating shaft 707 .

[0034] The working principle of the utility model is as follows:

[0035] Locking process: When parts I1 and II2 are aligned and in the same straight line, the user can manually or mechanically operate the lower pull ring 5 to pull it downward. The downward movement of the lower pull ring 5 will transmit force through the connecting member 6, causing the locking hook 4 to rotate around the hinge axis. At this time, the other end of the locking hook 4 rotates downward and engages with the wedge-shaped groove 404 of part I1 to form a fixed connection, preventing relative rotation between parts I1 and II2.

[0036] Unlocking process: To release the locked state, the user only needs to operate the eccentric rotating mechanism 7 to move the lower pull ring 5 upward. The upward movement of the lower pull ring 5 will return the locking hook 4 to the unlocked state, thereby allowing parts I1 and II2 to rotate freely.

[0037] The utility model provides a new locking buckle 3 solution through a simple and effective structural design, which can realize locking on the rotation connection when the component I1 and the component II2 are in the same straight line, and has good safety and operability. By implementing this solution, the performance of the flip mechanism can be significantly improved to meet the needs of different industries.

[0038] In a specific embodiment, the locking hook 4 is integrally formed of TC4 titanium alloy, has high strength and good corrosion resistance, and meets the strength requirements of the flip mechanism.

[0039] See also Figure 4 , including the following components:

[0040] Rotating part 401: The end portion that is rotatably connected to component II2 is hingedly connected to ensure flexible rotation.

[0041] Connecting portion 402: connects the rotating portion 401 and the clamping portion 403 to provide a stable connection structure.

[0042] Snap-fit ​​portion 403: A downwardly disposed protrusion 405 portion, the shape of which is designed to match the wedge-shaped groove 404 at the end of component I1 to ensure secure locking.

[0043] When the components I1 and II2 are in the same straight line, the user applies a downward pulling force through the lower pull ring 5. The movement of the lower pull ring 5 causes the connecting member 6 to drive the locking hook 4 to move downward. The rotating portion 401 of the locking hook 4 rotates around the hinge axis, and the protrusion 405 of the clamping portion 403 rotates downward and enters the wedge-shaped groove 404 of the component I1, forming a firm lock.

[0044] The user operates the eccentric rotating mechanism 7 to move the lower pull ring 5 upward, thereby releasing the force on the locking hook 4. After the downward pulling force is released, the locking hook 4 returns to its original position due to the action of gravity and the reaction force of the internal spring, and the protrusion 405 of the clamping portion 403 partially disengages from the wedge-shaped groove 404 of the component I1, allowing the components I1 and II2 to resume free rotation.

[0045] In a specific embodiment, the connector 6 includes an internal threaded sleeve 601, an internal hexagonal nut and a countersunk screw 602, both of which are made of 316L stainless steel to ensure excellent corrosion resistance and strength. The specific structure is as follows:

[0046] Internal thread sleeve 601: This sleeve is a long hexagonal nut with a standard internal thread for easy threaded connection with other components. Its shape is designed to be hexagonal, so it is easy to tighten and disassemble with a wrench.

[0047] Countersunk screw 602: The countersunk screw 602 is a hexagonal large flat head screw, and its head is designed to be in a countersunk shape, which can be completely embedded in the countersunk screw hole 603, ensuring that the surface of the connecting part 402 is flat and avoiding protruding parts that affect the appearance and use.

[0048] Countersunk screw hole 603: A countersunk screw hole 603 is provided in the middle of the connecting portion 402, and the hole diameter and depth are precisely designed to fit the size of the countersunk screw 602 to ensure a secure fit.

[0049] Connection method:

[0050] The countersunk screw 602 is installed on the connecting part 402 through the countersunk screw hole 603, and is tightened by a wrench in the middle to ensure that it does not loosen during use. One end of the threaded sleeve is threadedly connected to the countersunk screw 602 to form a tight mechanical connection; the other end is threadedly connected to the upper end of the eccentric rotating mechanism 7. This design ensures that torque and motion can be effectively transmitted during the eccentric rotation process.

[0051] In a specific embodiment, see Figure 5 The lower pull ring 5 includes an integrally formed pull ring 501 and a rod 502 . The upper portion of the rod 502 is provided with an external thread that matches the internal thread sleeve 601 . A circular hole 503 is provided in the middle portion of the pull ring 501 .

[0052] In a specific embodiment, see Figure 6 , 7 The eccentric rotating mechanism 7 includes a handle 701 and an eccentric wheel 702, and its specific structure and function are as follows:

[0053] Handle 701 is made of titanium alloy, which has excellent strength and corrosion resistance, ensuring that it can withstand large torque during operation. Handle 701 adopts a streamlined and smooth design to improve the adaptability and comfort during operation and reduce hand fatigue. The streamlined design is not only beautiful, but also effectively reduces air resistance and improves operating efficiency. During the operation of the flip mechanism, the design of handle 701 enables it to achieve the purpose of locking, ensuring the stability and safety of the device when in use.

[0054] The eccentric wheel 702 is also made of TC4 titanium alloy, which meets the requirements of the turning mechanism for strength and wear resistance and can operate stably under high load. An eccentric through hole 706 is provided in the eccentric wheel 702 to allow the rotating shaft 707 to rotate freely, thereby realizing the function of eccentric rotation.

[0055] A double circular ring structure 703 is provided at the end of the handle 701, and a mounting groove 704 is provided in the middle of the double circular arc structure, and the eccentric wheel 702 is embedded in the mounting groove 704 to ensure the fixation and stability of the eccentric wheel 702. The lower end pull ring 501 of the lower pull ring 5 is inserted in the double circular ring structure 703 and sleeved on the eccentric wheel 702, so that the eccentric wheel 702 can effectively transmit force during operation, ensuring the smooth operation of the flip mechanism.

[0056] A rotating shaft 707 is installed in the eccentric through hole 706, and both ends of the rotating shaft 707 are fixedly connected to the component II 2 to ensure the stability and reliability of the entire eccentric rotation mechanism. The design of the rotating shaft 707 enables the eccentric wheel 702 to rotate freely during operation, thereby achieving the required eccentric movement.

[0057] In a specific implementation, the structure and function of the rotating shaft 707 are as follows:

[0058] The rotating shaft 707 is made of TC4 titanium alloy to ensure its durability and strength under high-intensity and high-load conditions, meeting the performance requirements of the flip mechanism. The rotating shaft 707 is designed as an integrated structure to enhance the overall stability and reliability.

[0059] The rotating shaft cap 705 is also made of TC4 titanium alloy and riveted to the rotating shaft 707 to ensure that it will not loosen during operation. The riveted design effectively improves the connection strength between the rotating shaft cap 705 and the rotating shaft 707, prevents loosening under high load or intense movement, and ensures the safety and stability of the flip mechanism.

[0060] In a specific embodiment, the cross-sectional shape of the eccentric wheel 702 is a combination of a large semicircular arc and a straight line, and the shape of the mounting groove 704 is adapted to the shape of the eccentric wheel 702 to achieve power transmission between the eccentric wheel 702 and the double arc structure. When the eccentric wheel 702 rotates, the double arc structure can be driven to rotate.

[0061] Working principle and use:

[0062] This locking buckle 3 adopts the principle of eccentric structure, by installing a wheel whose rotation center and geometric center do not coincide on the rotating shaft 707, the rotating shaft 707 is fixed on the component II2, and the handle 701 controls the eccentric wheel 702 to rotate around the rotation center. Since the rotating shaft 707 on the rotation center is fixedly connected to the component II2, the position of the rotating shaft 707 is fixed, that is, the relative movement of the end of the handle 701 and the pull ring 501 is to move downward, driving the locking hook 4 to rotate around the hinge axis at its end, and the other end of the locking hook 4 away from the hinge axis rotates downward, and is buckled and connected with the end wedge groove 404 of the component I1, so as to realize the locking of the rotation connection relationship between the component I1 and the component II2. Due to the self-locking performance of the eccentric wheel 702, when the eccentric wheel 702 rotates to the locking position, it will automatically remain in this position. It has the characteristics of simple use, safe and reliable structure, and convenient operation. It can be operated without additional tools, and the tightness can be adjusted arbitrarily according to the use requirements, so that the two components are effectively connected and the reliability of the connection in the opening and closing state is fully guaranteed.

[0063] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A locking buckle for a flip mechanism, used for locking a component I (1) and a component II (2) at a hinged joint, wherein the component I (1) and the component II (2) are both rod-shaped structures, and the joints thereof are rotatably connected via a hinge axis. When the component I (1) and the component II (2) are on the same straight line, the locking buckle (3) locks the rotatable connection relationship between the component I (1) and the component II (2). It is characterized in that include: A locking hook (4), the locking hook (4) being arranged on the upper part of the component I (1) and the component II (2), one end of which is hingedly connected to the end of the component II (2) for rotation, and the end of the component I (1) is provided with a wedge-shaped groove (404) for buckling with the locking hook (4); A lower pull ring (5), the lower pull ring (5) is connected to the locking hook (4) via a connecting piece (6), and the upper end of the connecting piece (6) is fixed to the middle of the locking hook (4); The eccentric rotating mechanism (7) is arranged at the lower end of the lower pull ring (5) and is rotatably connected to the lower part of the component II (2) through a rotating shaft (707).

2. A locking buckle for a flip mechanism according to claim 1, characterized in that: The locking hook (4) comprises an integrally formed rotating portion (401), a connecting portion (402) and a clamping portion (403); the rotating portion (401) is hingedly connected to the end of the component II (2) for rotational connection, and the clamping portion (403) is a downwardly disposed protrusion (405), which is clamped and matched with a wedge-shaped groove (404) at the end of the component I (1).

3. A locking buckle for a flip mechanism according to claim 2, characterized in that: The connecting member (6) comprises an internal threaded sleeve (601) and a countersunk screw (602); a countersunk screw hole (603) is provided in the middle of the connecting portion (402); the countersunk screw (602) is installed in the countersunk screw hole (603); one end of the internal threaded sleeve (601) is threadedly connected to the countersunk screw (602); and the other end is threadedly connected to the upper end of the eccentric rotating mechanism (7).

4. A locking buckle for a flip mechanism according to claim 3, characterized in that: The lower pull ring (5) comprises an integrally formed pull ring (501) and a rod (502), the upper portion of the rod (502) is provided with an external thread matched with the internal thread sleeve (601), and a circular hole (503) is provided in the middle of the pull ring (501).

5. A locking buckle for a flip mechanism according to claim 4, characterized in that: The eccentric rotating mechanism (7) comprises a handle (701) and an eccentric wheel (702); a double circular ring structure (703) is arranged at the end of the handle (701); a mounting groove (704) is arranged in the middle of the double circular arc structure; the eccentric wheel (702) is embedded in the mounting groove (704); a pull ring (501) at the lower end of the lower pull ring (5) is inserted in the double circular ring structure (703) and sleeved on the eccentric wheel (702); an eccentric through hole (706) is arranged in the eccentric through hole (706); a rotating shaft (707) is installed in the eccentric through hole (706); and both ends of the rotating shaft (707) are fixedly connected to component II (2).

6. A locking buckle for a flip mechanism according to claim 4, characterized in that: The two ends of the rotating shaft (707) are riveted with rotating shaft caps (705).

7. A locking buckle for a flip mechanism according to claim 5, characterized in that: The cross-sectional shape of the eccentric wheel (702) is a combination of a large semicircular arc and a straight line, and the shape of the mounting groove (704) is adapted to the shape of the eccentric wheel (702).

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