Self-locking coupling

Abstract

The utility model provides a kind of self-locking coupling, including first shaft sleeve and second shaft sleeve, the side end surface of second shaft sleeve is equipped with installation recess, the inside of installation recess is equidistantly distributed and is equipped with four female lock pieces, the side end surface of first shaft sleeve is installed with female lock piece radial correspondence and has daughter lock piece, the female lock piece includes rotating frame, the end of rotating frame is installed with locking hook, the daughter lock piece includes butt joint column.The self-locking coupling, after butt joint column is inserted into the inside of mounting frame after butt joint after first shaft sleeve and second shaft sleeve butt joint, butt joint column is extruded after locking hook, then rotating frame falls, locking hook is inserted into the inside of clamping groove, locking hook will butt joint column be fixed in the inside of installation recess, the clamping of locking hook and butt joint column, operation needs to be butt joint and can be completed, can be connected quickly by self-locking, it is easy to operate and save time.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and in particular to a self-locking coupling. Background Technology

[0002] Couplings are key components in mechanical transmission systems that connect two shafts or a shaft and a rotating component. Their main functions are to transmit torque and motion, and to compensate for axial, radial, and angular relative displacements caused by manufacturing, installation, thermal expansion, or load deformation. Some couplings (flexible couplings) can also mitigate impacts and absorb vibrations. Certain couplings can serve as safety devices, protecting against overloads. Slow coupling installation not only wastes time and money but may also indicate poor installation quality due to rushed or fatigued work, posing a potential threat to the long-term stable operation of equipment. Therefore, the installation speed of couplings should be increased. Utility Model Content

[0003] The purpose of this invention is to provide a self-locking coupling that can be quickly locked and installed.

[0004] This utility model provides a self-locking coupling, including a first bushing and a second bushing. The second bushing has an installation groove on its side end face. Four female locking members are installed in the installation groove in a circumferentially equidistant manner. A female locking member is installed on the side end face of the first bushing, radially corresponding to the female locking member. The female locking member includes a rotating frame, and a locking hook is installed at the end of the rotating frame. The female locking member includes a docking post, and a snap-fit ​​groove is opened on the outer wall of the docking post. After the first bushing and the second bushing are docked, the docking post pushes the rotating frame to rotate. After the locking hook falls down, it snaps into the snap-fit ​​groove. The docking post and the rotating frame are connected and fixed. The first bushing and the second bushing complete a self-locking connection.

[0005] As a further optimization, the female lock component includes a mounting bracket, which is installed inside the mounting groove. The rotating bracket is movably connected to the mounting bracket via a connecting shaft. The rotating bracket rotates on the mounting bracket, and a pressing component is installed at one end of the rotating bracket where a locking hook is mounted.

[0006] As a further optimization, the sub-locking component includes a connecting frame, which is installed on the side end face of the first bushing. A docking post is installed on the outer end of the connecting frame, and clamping plates are installed on both ends of the outer wall of the docking post. A docking groove is opened on the side of the mounting frame near the sub-locking component. When the docking post is inserted into the docking groove, the clamping plates clamp the two side walls of the mounting frame.

[0007] As a further optimization, a limiting component is installed on the outer wall of the connecting shaft. The limiting component includes a limiting frame and a limiting rod. The limiting rod is installed on the outer wall of the connecting shaft, the limiting frame is installed on the side wall of the mounting bracket, and the limiting rod is engaged with the inner wall of the limiting frame.

[0008] As a further optimization, a control component is installed on the outer wall of the first bushing. The control component includes an actuating plate, which is installed on the upper surface of the rotating frame away from the locking hook. The actuating plate passes through the first bushing via an actuating groove and slides inside the actuating groove.

[0009] As a further optimization, the cross-section where the locking hook engages with the locking groove is a flat surface.

[0010] As a further optimization, the outer surface of the locking hook is an inclined surface.

[0011] As a further optimization, the lever plate is made of stainless steel.

[0012] This utility model provides a self-locking coupling through improvements, which has the following improvements and advantages compared with the prior art: In this self-locking coupling, after the first and second bushings are mated, the mating post is inserted into the interior of the mounting bracket. After the mating post is pressed through the locking hook, the rotating bracket falls, and the locking hook is inserted into the snap-fit ​​groove. The locking hook fixes the mating post inside the mounting groove. The connection is completed after the locking hook and the mating post are snapped together and the male and female locking parts are locked. The first and second bushings, which are the main body of the coupling, are self-lockingly connected. The operation can be completed by simply mating. It can achieve quick connection through self-locking, which is simple and saves time. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the coupling connection of this utility model; Figure 3 This utility model Figure 2 An enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure of the sub-lock and the mother lock after locking. Figure 5 This utility model Figure 3 Enlarged structural diagram at point B (limiting component); Figure 6 This is a schematic diagram showing the distribution of the female locking component inside the first bushing of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1-First bushing, 2-Second bushing, 21-Mounting groove, 3-Main lock, 31-Mounting bracket, 32-Connecting shaft, 33-Rotating bracket, 34-Locking hook, 4-Pressing assembly, 41-Mounting plate, 42-Compression spring, 5-Sub-lock, 51-Connecting bracket, 52-Clamping plate, 53-Snap-fit ​​groove, 54-Matching post, 55-Matching groove, 6-Limiting assembly, 61-Limiting rod, 62-Limiting frame, 7-Control assembly, 71-Actuating plate, 72-Actuating groove. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] In the description of this utility model, it should be understood that the terms "first" and "second" 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Please see Figure 1-6 As illustrated, this utility model provides a technical solution for a self-locking coupling, including a first bushing 1 and a second bushing 2. The first bushing 1 and the second bushing 2 are the two main bodies of the coupling, which connect two shafts after mating. A mounting groove 21 is provided on the side end face of the second bushing 2 for mounting female locking components 3. Four female locking components 3 are equidistantly distributed in a circular pattern inside the mounting groove 21. A male locking component 5 is installed radially corresponding to the female locking components 3 on the side end face of the first bushing 1. The male locking component 5 is aligned with the female locking component 3. After connection and locking, the two bushings are self-locked together. The female locking component 3 includes a rotating frame 33, a locking hook 34 is installed on the rotating frame 33, and a locking hook 34 is installed at the end of the rotating frame 33. The female locking component 5 includes a docking post 54, and a snap-fit ​​groove 53 is opened on the outer wall of the docking post 54. After the first bushing 1 and the second bushing 2 are docked, the docking post 54 pushes the rotating frame 33 to rotate. After the locking hook 34 falls down, it snaps into the snap-fit ​​groove 53. The docking post 54 and the rotating frame 33 are connected and fixed. The first bushing 1 and the second bushing 2 complete the self-locking connection.

[0020] refer to Figure 2 , Figure 3 and Figure 4 After the first bushing 1 and the second bushing 2 are connected, the first bushing 1 drives the connecting column 54 to press the rotating frame 33 to rise. After the connecting column 54 is pressed past the locking hook 34, the rotating frame 33 falls down, and the locking hook 34 is engaged in the inside of the snap-fit ​​groove 53. The locking hook 34 fixes the connecting column 54 in the inside of the mounting groove 21. The snap-fit ​​between the locking hook 34 and the connecting column 54 locks the male locking piece 5 and the female locking piece 3, thereby connecting the first bushing 1 and the second bushing 2. The operation process only requires connecting the first bushing 1 and the second bushing 2 to complete the installation. The coupling can be installed quickly by means of self-locking.

[0021] like Figures 2 to 4As shown, the state of the female locking component 3 can be seen. The female locking component 3 includes a mounting bracket 31, which is the load-bearing structure of the female locking component 3. The mounting bracket 31 is installed inside the mounting groove 21. The rotating bracket 33 is movably connected to the mounting bracket 31 through a connecting shaft 32. The connecting shaft 32 allows the rotating bracket 33 to rotate on the mounting bracket 31. The rotating bracket 33 has a locking hook 34 installed at one end and a pressing component 4 installed at the other end. The pressing component 4 applies a pressing force to the rotating bracket 33, increasing the force of the locking hook 34 and the docking post 54.

[0022] like Figures 2 to 4 As shown, the state of the sub-locking component 5 and the state after the female locking component 3 and the sub-locking component 5 are connected can be understood. The sub-locking component 5 includes a connecting frame 51, which is used to load the docking post 54. The docking post 54 is engaged with the locking hook 34. The connecting frame 51 is installed on the side end face of the first bushing 1. The docking post 54 is installed on the outer end of the connecting frame 51. Clamping plates 52 are installed on both ends of the outer wall of the docking post 54. The clamping plates 52 move with the docking post 54. After the docking post 54 is engaged with the locking hook 34, the two clamping plates 52 clamp the docking post 54. The mounting bracket 31 is held by the wall. The mounting bracket 31 has a docking groove 55 on the side near the sub-locking member 5. The docking groove 55 allows the docking post 54 to dock. When the docking post 54 is inserted into the docking groove 55, the clamping plate 52 clamps the two side walls of the mounting bracket 31. After the sub-locking member 5 docks with the locking hook 34 through the docking post 54, the first bushing 1 and the second bushing 2 are connected and fixed. After the clamping plate 52 clamps the mounting bracket 31, it limits the axial diameter. When the first bushing 1 and the second bushing 2 rotate, they can rotate synchronously.

[0023] To prevent excessive downward movement of the rotating frame 33, a limiting component 6 is used to limit it. The limiting component 6 is installed on the outer wall of the connecting shaft 32. The limiting component 6 includes a limiting frame 62 and a limiting rod 61. The limiting rod 61 is installed on the outer wall of the connecting shaft 32, and the limiting frame 62 is installed on the side wall of the mounting frame 31. The limiting rod 61 is engaged with the inner wall of the limiting frame 62. After the limiting rod 61 is engaged with the inside of the limiting frame 62, it limits the connecting shaft 32, thereby preventing the rotating frame 33 from falling excessively due to gravity.

[0024] When it is necessary to release the locking state, the control component 7 is used for operation. The control component 7 is installed on the outer wall of the first bushing 1. The control component 7 includes a lever plate 71. The lever plate 71 is installed on the upper surface of the rotating frame 33 away from the locking hook 34. The lever plate 71 passes through the first bushing 1 through the lever groove 72. The lever plate 71 slides inside the lever groove 72. When the lever plate 71 is operated, after sliding inside the lever groove 72, the lever plate 71 can control the rotating frame 33 to rotate. When the rotating frame 33 is raised, it drives the locking hook 34 to stop engaging with the docking post 54.

[0025] To ensure a tight lock, the locking hook 34 and the locking groove 53 are connected by a flat surface. The flat surface makes a tighter contact and is less prone to slippage compared to the curved surface.

[0026] Provided that the docking post 54 can be smoothly squeezed through the locking hook 34, the outer side of the locking hook 34 is an inclined surface. When the inclined surface contacts the arc surface of the docking post 54, it can pass smoothly and then engage with the locking groove 53.

[0027] To increase the service life of the externally exposed lever plate 71, the lever plate 71 is made of stainless steel, which can resist external oxidation and rust.

[0028] Working process: After the first bushing 1 and the second bushing 2 are connected, the first bushing 1 drives the connecting post 54 to insert into the interior of the mounting groove 21 and into the interior of the connecting slot 55. The connecting post 54 presses the rotating frame 33 to lift it up. The rotating frame 33 rotates under the action of the connecting shaft 32. After the connecting post 54 passes the locking hook 34, the compression spring 42 in the pressing assembly 4 pushes the locking hook 34 downward, and the locking hook 34 is engaged in the interior of the locking slot 53. At this time, the locking hook 34 and the connecting post 54 are locked and fixed, and the first bushing 1 and the second bushing 2 are connected and fixed. The clamping plate 52 clamps the two side walls of the mounting frame 31. The sub-locking part 5 completes the connection and fixation of the first bushing 1 and the second bushing 2 after docking with the docking post 54 and the locking hook 34. After the clamping plate 52 clamps the mounting frame 31, it limits the axial diameter. When the first bushing 1 and the second bushing 2 rotate, they can rotate synchronously. When disassembly is required, the lever plate 71 can control the rotation of the rotating frame 33. When the rotating frame 33 rises, it drives the locking hook 34 to stop engaging with the docking post 54, stopping the connection between the first bushing 1 and the second bushing 2. At this time, the coupling can be separated.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-locking coupling, characterized in that, The assembly includes a first bushing (1) and a second bushing (2). The second bushing (2) has an installation groove (21) on its side end face. Four female locking pieces (3) are installed in the installation groove (21) in a circumferentially equidistant arrangement. The first bushing (1) has a female locking piece (5) installed radially corresponding to the female locking piece (3). The female locking piece (3) includes a rotating frame (33). The end of the rotating frame (33) is equipped with a locking hook (34). The female locking piece (5) includes a docking post (54). The outer wall of the docking post (54) has a snap-fit ​​groove (53). After the first bushing (1) and the second bushing (2) are docked, the docking post (54) pushes the rotating frame (33) to rotate. After the locking hook (34) falls down, it snaps into the snap-fit ​​groove (53). The docking post (54) and the rotating frame (33) are connected and fixed. The first bushing (1) and the second bushing (2) complete a self-locking connection.

2. The self-locking coupling according to claim 1, characterized in that, The female locking component (3) includes a mounting bracket (31), which is installed inside the mounting groove (21). The rotating bracket (33) is movably connected to the mounting bracket (31) via a connecting shaft (32). The rotating bracket (33) rotates on the mounting bracket (31). One end of the rotating bracket (33) with a locking hook (34) is equipped with a pressing component (4).

3. A self-locking coupling according to claim 2, characterized in that, The sub-lock (5) includes a connecting frame (51), which is installed on the side end face of the first bushing (1). A docking post (54) is installed on the outer end of the connecting frame (51). Clamping plates (52) are installed on both ends of the outer wall of the docking post (54). A docking groove (55) is opened on the side of the mounting frame (31) near the sub-lock (5). When the docking post (54) is inserted into the docking groove (55), the clamping plates (52) clamp the two side walls of the mounting frame (31).

4. A self-locking coupling according to claim 2, characterized in that, A limiting component (6) is installed on the outer wall of the connecting shaft (32). The limiting component (6) includes a limiting frame (62) and a limiting rod (61). The limiting rod (61) is installed on the outer wall of the connecting shaft (32), the limiting frame (62) is installed on the side wall of the mounting bracket (31), and the limiting rod (61) is engaged with the inner wall of the limiting frame (62).

5. A self-locking coupling according to claim 1, characterized in that, A control component (7) is installed on the outer wall of the first bushing (1). The control component (7) includes a lever plate (71). The lever plate (71) is installed on the upper surface of the rotating frame (33) away from the locking hook (34). The lever plate (71) passes through the first bushing (1) through the lever groove (72). The lever plate (71) slides inside the lever groove (72).

6. A self-locking coupling according to claim 1, characterized in that, The locking hook (34) engages with the snap-fit ​​groove (53) on a flat surface.

7. A self-locking coupling according to claim 6, characterized in that, The outer surface of the locking hook (34) is an inclined surface.

8. A self-locking coupling according to claim 5, characterized in that, The lever plate (71) is made of stainless steel.

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