Fastening assembly and fastening device of a ceiling machine drain

Abstract

The application provides a fastening assembly and a fastening device of a ceiling machine drain pipe formed by the fastening assembly, wherein the fastening assembly is used for fastening a pipe fitting and comprises a fastening coil formed by winding a wire, a first connecting piece and a second connecting piece located at the side of the fastening coil, the first connecting piece and the second connecting piece are respectively located at the starting end and the ending end of the fastening coil, and a fastening piece connected with the first connecting piece and the second connecting piece respectively and capable of moving the first connecting piece and the second connecting piece towards each other or away from each other. The application can avoid the fastening instability phenomenon caused by the size deviation of the pipe fitting, improve the pipe fitting assembly efficiency and assembly stability, and avoid the defects of non-fastening or forced disengagement of the pipe fitting after assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of drainage pipe fastening structure, and in particular to fastening components and fastening devices for the drainage pipes of ceiling machines formed therefrom. Background Technology

[0002] The ceiling-mounted air conditioner comes pre-installed with a drain nozzle, and the drain pipe is shipped as a packaged accessory. During after-sales installation, the drain pipe is inserted into the drain nozzle for assembly. The drain nozzle is made of injection-molded material, and the drain pipe connector is made of TPE material; the two are connected by an interference fit. For ease of installation, the interference fit needs to be designed to be moderate; if it is too tight, the drain pipe will be difficult to insert into the drain nozzle.

[0003] However, dimensional fluctuations are inevitable during the production of injection-molded parts' drain nozzles. When the drain nozzle is too small, the drain pipe becomes loose after insertion, making it prone to detachment. In existing technology, the drain nozzle and drain pipe are only connected by an interference fit. When the drain pipe is subjected to external force, it can easily detach from the drain nozzle, leading to leakage. Therefore, a fastening device that can be automatically adjusted during assembly is needed. Utility Model Content

[0004] To overcome the problems existing in the related technologies, one of the objectives of this utility model is to provide a fastening component that can avoid the phenomenon of unstable fastening caused by the deviation of pipe size, improve the assembly efficiency and assembly stability of pipes, and avoid the defects of pipes not being fastened or coming off under force after assembly.

[0005] A fastening assembly for fastening pipe fittings, comprising:

[0006] A fastening coil made of wound wire;

[0007] A first connector and a second connector are located on the side of the fastening coil, with the first connector and the second connector located at the start end and the end end of the fastening coil, respectively.

[0008] A fastener that connects a first connector and a second connector respectively, and the fastener is capable of moving the first connector and the second connector toward each other or toward each other.

[0009] The fastening coil is sleeved on the outside of the pipe fitting. When the fastener moves the first and second connecting pieces closer together, because the first and second connecting pieces are located on opposite sides of the fastening coil, the length of the wire winding the fastening coil increases, which in turn increases the inner diameter of the fastening coil, thus loosening the pipe fitting. When the fastener moves the first and second connecting pieces away from each other, because the first and second connecting pieces are located on opposite sides of the fastening coil, the length of the wire winding the fastening coil decreases, which in turn decreases the inner diameter of the fastening coil, thus fastening the pipe fitting. This application has a simple structural design, which can avoid the unstable fastening phenomenon caused by the pipe fitting size deviation, improve the assembly efficiency and stability of the pipe fitting, and avoid the defects of the pipe fitting not being fastened or coming off under force after assembly.

[0010] In a preferred embodiment of this invention, the fastener includes an adjusting plate and a bolt. The adjusting plate is fixedly connected to the second connecting member. The adjusting plate is provided with a fastening through hole, and the bolt passes through the fastening through hole and abuts against the first connecting member.

[0011] In this application, the adjusting plate is fixedly connected to the second connecting member, and the bolt passes through the fastening through hole in the adjusting plate and abuts against the first connecting member. When the bolt rotates, it can drive the second connecting member to move relative to the first connecting member through the adjusting plate. The direction of bolt rotation can be used to bring the first and second connecting members closer together or further apart. This application can use the adjusting plate to fix multiple second connecting members, and is suitable for structures with multiple fastening coils and multiple first and second connecting members. At the same time, the adjusting plate provides a convenient way to fix the second connecting member and the bolt; the connection between the second connecting member and the bolt can be achieved simply by welding or bonding the adjusting plate and the second connecting member together.

[0012] In a preferred embodiment of this invention, there are two fastening coils, which are stacked on top of each other and are made of the same wire.

[0013] When there is only one fastening coil, it can only fasten the pipe at a specific location, resulting in excessive fastening stress. When there are multiple fastening coils, the process of winding the fastening assembly is more complicated. This application prefers to wind the wire into two fastening coils, which can not only avoid stress concentration, but also improve the fastening stability of the pipe.

[0014] In a preferred embodiment of this invention, the first connector is located in the middle of the wire, and the first connector is a boss extending away from the fastening coil.

[0015] When there are two fastening coils, since the fastening coils are wound from the same wire, one fastening coil is wound on the first half and the other on the second half of the wire. Simultaneously, a first connector and a second connector are required at the beginning and end of each fastening coil. Preferably, this application bends the middle section of the wire into a boss extending towards the fastening coil, which also serves as the first connector for the two first fasteners. The boss structure can be an extension plane perpendicular to the plane of the fastening coil. By placing the first connectors of the two first fastening coils in the middle of the wire, the first connectors are formed synchronously during the winding process, improving the winding efficiency of the fastening assembly.

[0016] In a preferred embodiment of this utility model, there are two second connectors arranged side by side, and the two second connectors are respectively located at both ends of the wire. The second connector is a hook extending toward the boss.

[0017] When there are two fastening coils, since the fastening coils are wound from the same wire, that is, one fastening coil is wound on the first half and the second half of the wire respectively. At the same time, a first connector and a second connector are required at the start and end of each fastening coil. Preferably, the two ends of the wire are formed into two second connectors corresponding to the fastening coils. Since the first connector is a planar structure perpendicular to the plane where the fastening coil is located, this application further sets the two second connectors as hooks that are parallel and extend toward the boss. Through the structural design of the hooks and the boss, the start and end of the fastening coil can be integrated in a relatively close position, which facilitates the control of the start and end of the fastening coil by the fastener.

[0018] In a preferred embodiment of this invention, the fastener includes an adjusting plate and a bolt. The adjusting plate is fixedly connected to the hooks, and the adjusting plate is provided with a fastening through hole located between the two hooks. The bolt passes through the fastening through hole and abuts against the boss.

[0019] In this application, the adjusting plate is provided with a fastening through hole. The bottom of the bolt passes through the fastening through hole and abuts against the boss. The middle position of the screw is connected to the fastening through hole by a thread. The adjusting plate containing the fastening through hole is fixedly connected to the hook. When the bolt rotates, the relative position of the thread and the adjusting plate changes, thereby changing the distance between the hook and the boss. This application uses the adjusting plate to fix the bolt and the hook, and the rotation of the bolt can also change the distance between the boss and the hook, making operation convenient and simple.

[0020] In a preferred embodiment of this invention, the adjusting plate is further provided with two fixing through holes, which are located on both sides of the fastening through hole, and the two hooks are respectively fixed inside the two fixing through holes.

[0021] In this application, the adjusting plate is provided with a fixing through hole, the inner diameter of which is adapted to the outer diameter of the hook, and the two can be fixed together by welding or bonding. The two fixing through holes simultaneously achieve the synchronous fixing of the second connecting parts corresponding to the two fastening coils, namely the hooks, ensuring that the two fastening coils in this application retract synchronously.

[0022] In a preferred embodiment of this invention, the bolt includes a connecting portion and a threaded portion, the threaded portion being threadedly connected to the fastening through hole; the connecting portion abuts against the boss via a washer.

[0023] The boss has a first connecting through hole, and the washer has a second connecting through hole. The outer diameter of the connecting part is smaller than the outer diameter of the threaded part, and the inner diameter of the second connecting through hole is smaller than the outer diameter of the threaded part. The connecting part passes through the second connecting through hole and the first connecting through hole in sequence.

[0024] In this application, the connecting part does not need to be threaded on the outside and can have a smooth outer diameter. The threaded part has external threads on the outside, and the fastening through hole has internal threads. Since the boss is formed by winding wire, it is necessarily a hollow structure with a first connecting through hole formed by bending wire. To achieve better abutment and fixation between the bolt and the boss, this application snaps the connecting part into the first connecting through hole, ensuring a stable abutment between the bottom of the bolt and the boss. To prevent the boss from deforming under the bolt force, a washer is provided on the side of the boss near the hook, and a second connecting through hole is provided in the washer. The outer diameter of the connecting part is smaller than the outer diameter of the threaded part, and the inner diameters of the second and first connecting through holes are adapted to the outer diameter of the connecting part, both being smaller than the outer diameter of the threaded part; ensuring that the connecting part passes through the second and first connecting through holes in sequence and abuts the boss firmly. To achieve better fixation, this application also provides a transition part between the connecting part and the threaded part. The transition part can be a frustum-shaped structure, and the washer is snapped into the bottom of the transition part. Through the structural design of the threaded part, transition part and connecting part, a stable connection between the bolt and the adjusting plate, as well as a stable contact between the bolt and the washer and the boss, can be achieved, which facilitates the subsequent adjustment of the distance between the bolt and the boss and the hook.

[0025] The second objective of this application is to provide a fastening device for the drain pipe of a ceiling-mounted air conditioner, including a fastening assembly as described above. By using the fastening assembly described above to fasten the drain pipe and drain nozzle of the ceiling-mounted air conditioner, when the drain pipe is fitted onto the drain nozzle, the fasteners drive the first and second connecting parts closer together, and by fixing the position of the fasteners, the drain pipe opening is secured. This solves the problems in the prior art where the drain pipe is not securely fastened after assembly and is easily dislodged under stress.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model provides a fastening assembly for fastening pipe fittings. Specifically, it includes a fastening coil, a first connector, a second connector, and a fastener. The fastening coil, the first connector, and the second connector are integrally formed and wound from the same wire. The first connector and the second connector are located at the starting and ending ends of the fastening coil, respectively. The fastener connects the first connector and the second connector, and the fastener can move the first connector and the second connector closer to or further away from each other. The fastening coil is sleeved on the outside of the pipe fitting. When the fastener moves the first connector and the second connector closer, since the first connector and the second connector are located on opposite sides of the fastening coil, the inner diameter of the fastening coil increases, thus loosening the pipe fitting. When the fastener moves the first connector and the second connector further away, since the first connector and the second connector are located on opposite sides of the fastening coil, the inner diameter of the fastening coil decreases, thus fastening the pipe fitting. The structural design of this application is simple, which can avoid the phenomenon of unstable fastening caused by the size deviation of the pipe fittings, improve the assembly efficiency and assembly stability of the pipe fittings, and avoid the defects of the pipe fittings not being fastened or coming off under force after assembly.

[0028] This application also provides a fastening device for the drain pipe of a ceiling air conditioner. The fastening components described above are used to fasten the drain pipe and drain nozzle of the ceiling air conditioner. When the drain pipe is fitted onto the drain nozzle, the fasteners drive the first connecting piece and the second connecting piece to move closer to each other. By fixing the position of the fasteners, the opening of the drain pipe is fastened, which solves the problems of the drain pipe not being fastened after assembly and being easy to come loose under force in the prior art. Attached Figure Description

[0029] Figure 1 This is a side view of the fastening coil in an embodiment of this application;

[0030] Figure 2 This is a top view of the fastening coil in an embodiment of this application;

[0031] Figure 3 This is a front view of the adjustment plate in an embodiment of this application;

[0032] Figure 4 This is a reverse view of the adjustment plate in an embodiment of this application;

[0033] Figure 5 This is a side view of the bolt in an embodiment of this application;

[0034] Figure 6 This is a top view of the bolt in an embodiment of this application;

[0035] Figure 7This is a schematic diagram of the gasket structure in an embodiment of this application;

[0036] Figure 8 This is a top view of the fastening assembly in an embodiment of this application;

[0037] Figure 9 This is a side view of the fastening assembly in an embodiment of this application;

[0038] Figure 10 This is a bottom view of the fastening assembly in an embodiment of this application;

[0039] Figure 11 This is an assembly diagram of the fastening components used to fasten the drain pipe in the embodiments of this application.

[0040] Figure label:

[0041] 11. Fastening coil; 12. Boss; 121. First connecting through hole; 13. Hook; 21. Adjusting plate; 211. Fixing through hole; 212. Fastening through hole; 31. Bolt; 311. Threaded part; 312. Connecting part; 313. Transition part; 314. Fixing surface; 41. Washer; 42. Second connecting through hole; 51. Drain pipe. Detailed Implementation

[0042] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0043] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] Example 1

[0046] like Figures 1-10 As shown, this application provides a fastening assembly for fastening pipe fittings, comprising:

[0047] A fastening coil 11 made of wire;

[0048] A first connector and a second connector are located on the side of the fastening coil 11, with the first connector and the second connector located at the starting end and the ending end of the fastening coil 11, respectively.

[0049] A fastener that connects a first connector and a second connector respectively, and the fastener is capable of moving the first connector and the second connector toward each other or toward each other.

[0050] This application provides a fastening assembly for securing pipe fittings. Specifically, it includes a fastening coil 11, a first connector, a second connector, and fasteners. The fastening coil 11, the first connector, and the second connector are integrally formed and are all wound from the same wire. In practice, the wire can be made of steel wire. By bending the steel wire, the fastening coil 11 and the first and second connectors located at the starting and ending ends of the fastening coil 11 are formed. The inner diameter of the fastening coil 11 is adapted to the pipe fitting, specifically, it can be slightly larger than the outer diameter of the pipe fitting.

[0051] The first connector and the second connector are located at the starting and ending ends of the fastening coil 11, respectively. In actual operation, there can be one, two, or more fastening coils 11, all of which can be achieved by bending the wire. Regardless of the number of fastening coils 11, the starting and ending ends of each fastening coil 11 need to be wound with the first connector and the second connector. When there are two or more fastening coils 11, multiple first connectors are located at the same position on the side of the fastening coil 11, and multiple second connectors are located at the same position on the side of the fastening coil 11. In this way, it can be ensured that the fastener can connect all the first and second fasteners at the same time, thereby synchronously driving multiple fastening coils 11 to loosen or tighten.

[0052] The fasteners connect the first connector and the second connector respectively, and the fasteners can drive the first connector and the second connector to move toward or away from each other.

[0053] The fastening coil 11 is sleeved on the outside of the pipe fitting. When the fastener moves the first and second connecting pieces closer together, since the first and second connecting pieces are located on opposite sides of the fastening coil 11, the length of the wire winding the fastening coil 11 increases, which in turn increases the inner diameter of the fastening coil 11, thus loosening the pipe fitting. When the fastener moves the first and second connecting pieces away from each other, since the first and second connecting pieces are located on opposite sides of the fastening coil 11, the length of the wire winding the fastening coil 11 decreases, which in turn decreases the inner diameter of the fastening coil 11, thus fastening the pipe fitting. This application has a simple structural design, which can avoid the unstable fastening phenomenon caused by the pipe fitting size deviation, improve the assembly efficiency and assembly stability of the pipe fitting, and avoid the defects of the pipe fitting not being fastened or coming off under force after assembly.

[0054] Example 2

[0055] like Figures 1-10 As shown, this application provides a fastening assembly for fastening pipe fittings, comprising:

[0056] A fastening coil 11 made of wire;

[0057] A first connector and a second connector are located on the side of the fastening coil 11, respectively at the starting end and the ending end of the fastening coil 11.

[0058] A fastener that connects a first connector and a second connector respectively, and the fastener is capable of moving the first connector and the second connector toward each other or toward each other.

[0059] Furthermore, the fastener includes an adjusting plate 21 and a bolt 31. The adjusting plate 21 is fixedly connected to the second connecting member. The adjusting plate 21 is provided with a fastening through hole 212. The bolt 31 passes through the fastening through hole 212 and abuts against the first connecting member.

[0060] In this application, the adjusting plate 21 is fixedly connected to the second connecting member, and the bolt 31 passes through the fastening through hole 212 in the adjusting plate 21 and abuts against the first connecting member. When the bolt 31 rotates, the bolt 31 can drive the second connecting member to move relative to the first connecting member through the adjusting plate 21; the direction of rotation of the bolt 31 can achieve the movement of the first connecting member and the second connecting member closer or further apart. This application can achieve the fixing of multiple second connecting members by means of the adjusting plate 21, and is applicable to the structure of multiple fastening coils 11 and multiple first connecting members and second connecting members. At the same time, the adjusting plate 21 provides a convenient way to fix the second connecting member and the bolt 31. The connection between the second connecting member and the bolt 31 can be achieved simply by welding or bonding the adjusting plate 21 and the second connecting member together.

[0061] Furthermore, there are two fastening coils 11, which are stacked and are made of the same wire.

[0062] When there is only one fastening coil 11, it can only fasten the pipe at a specific location, resulting in excessive fastening stress. When there are multiple fastening coils 11, the process of winding the fastening assembly is more complicated. This application prefers to wind the wire into two fastening coils 11, which can avoid stress concentration and improve the fastening stability of the pipe.

[0063] When the fastening coil 11 in this application is used to fasten the drain pipe 51, the fastening components are required to have high strength and be not easily deformed under stress. Since there is a risk of contact with water, they must not rust or corrode. Taking all factors into consideration, ML15 carbon structural steel is selected as the material for this wire.

[0064] Furthermore, the first connector is located in the middle of the wire, and the first connector is a boss 12 extending in a direction away from the fastening coil 11.

[0065] When there are two fastening coils 11, since the fastening coils 11 are wound from the same wire, one fastening coil 11 is wound on the first half and the other on the second half of the wire. Simultaneously, a first connector and a second connector are required at the beginning and end of each fastening coil 11. Preferably, this application bends the middle position of the wire into a boss 12 extending towards the fastening coil 11. This boss 12 also serves as the first connector for the two first fasteners. The boss 12 structure can be an extending plane perpendicular to the plane containing the fastening coil 11. By placing the first connectors of the two first fastening coils 11 at the middle position of the wire, the first connectors are formed synchronously during the winding process, improving the winding efficiency of the fastening assembly.

[0066] Furthermore, there are two second connectors arranged side by side, and the two second connectors are located at the two ends of the wire respectively. The second connector is a hook 13 extending toward the boss 12.

[0067] When there are two fastening coils 11, since the fastening coils 11 are wound from the same wire, that is, one fastening coil 11 is wound on the first half and the second half of the wire respectively. At the same time, a first connector and a second connector are required at the starting end and the ending end of each fastening coil 11. Preferably, the two ends of the wire are formed into two second connectors corresponding to the fastening coils 11. Since the first connector is a planar structure perpendicular to the plane where the fastening coil 11 is located, this application further sets the two second connectors as hooks 13 that are parallel and extend toward the boss 12. Through the structural design of the hooks 13 and the boss 12, the starting end and the ending end of the fastening coil 11 can be integrated in a relatively close position, which facilitates the control of the starting end and the ending end of the fastening coil 11 by the fastener.

[0068] Furthermore, the fastener includes an adjusting plate 21 and a bolt 31. The adjusting plate 21 is fixedly connected to the hook 13. The adjusting plate 21 is provided with a fastening through hole 212, which is located between the two hooks 13. The bolt 31 passes through the fastening through hole 212 and abuts against the boss 12.

[0069] In this application, the adjusting plate 21 is provided with a fastening through hole 212. The bottom of the bolt 31 passes through the fastening through hole 212 and abuts against the boss 12. The middle position of the screw is connected to the fastening through hole 212 by a thread. The adjusting plate 21, where the fastening through hole 212 is located, is fixedly connected to the hook 13. When the bolt 31 rotates, the relative position of the thread and the adjusting plate 21 changes, thereby changing the distance between the hook 13 and the boss 12. This application uses the adjusting plate 21 to fix the bolt 31 and the hook 13, and the rotation of the bolt 31 can also change the distance between the boss 12 and the hook 13, making the operation convenient and simple.

[0070] Furthermore, the adjusting plate 21 is also provided with two fixing through holes 211, which are located on both sides of the fastening through hole 212, and the two hooks 13 are respectively fixed inside the two fixing through holes 211.

[0071] In this application, the adjusting plate 21 is provided with a fixing through hole 211. The inner diameter of the fixing through hole 211 is adapted to the outer diameter of the hook 13, and the two can be fixed together by welding or bonding. The two fixing through holes 211 simultaneously realize the synchronous fixing of the second connecting parts corresponding to the two fastening coils 11, namely the hooks 13, ensuring that the two fastening coils 11 retract synchronously in this application.

[0072] Furthermore, the bolt 31 includes a connecting portion 312 and a threaded portion 311, the threaded portion 311 being threadedly connected to the fastening through hole 212; the connecting portion 312 abutting against the boss 12 via a washer 41; the boss 12 having a first connecting through hole 121, and the washer 41 having a second connecting through hole 42, the outer diameter of the connecting portion 312 being smaller than the outer diameter of the threaded portion 311, and the inner diameter of the second connecting through hole 42 being smaller than the outer diameter of the threaded portion 311; the connecting portion 312 sequentially passes through the second connecting through hole 42 and the first connecting through hole 121.

[0073] In this application, the connecting part 312 does not need to be threaded on the outside and can have a smooth outer diameter. The threaded part 311 has external threads on the outside and internal threads on the inside of the fastening through hole 212. Since the boss 12 is formed by winding wire, the boss 12 is necessarily a hollow structure with a first connecting through hole 121 formed by bending wire. In order to achieve better abutment and fixation between the bolt 31 and the boss 12, this application snaps the connecting part 312 into the first connecting through hole 121 to ensure a stable abutment between the bottom of the bolt 31 and the boss 12. In order to prevent the boss 12 from deforming under the force of the bolt 31, a washer 41 is provided on the side of the boss 12 near the hook 13. The washer 41 has a second connecting through hole 42. The outer diameter of the connecting portion 312 is smaller than the outer diameter of the threaded portion 311. The inner diameters of the second connecting through hole 42 and the first connecting through hole 121 are adapted to the outer diameter of the connecting portion 312, both being smaller than the outer diameter of the threaded portion 311. This ensures that the connecting portion 312 passes through the second connecting through hole 42 and the first connecting through hole 121 in sequence, and firmly abuts against the boss 12. To achieve better fixation, a transition portion 313 is also provided between the connecting portion 312 and the threaded portion 311. The transition portion 313 can be configured as a frustum-shaped structure, with the washer 41 snapped into the bottom of the transition portion 313. Through the structural design of the threaded portion 311, the transition portion 313, and the connecting portion 312, a stable connection between the bolt 31 and the adjusting plate 21, as well as a stable abutment between the bolt 31 and the washer 41 and the boss 12, can be achieved, facilitating subsequent adjustment of the distance between the bolt 31 and the boss 12 and the hook 13.

[0074] Example 3

[0075] like Figures 1-10 As shown, this application provides a fastening assembly for fastening pipe fittings, including a fastening coil 11, a first connector and a second connector, and fasteners, wherein the fastening coil 11, the first connector and the second connector are integrally formed and are all wound from the same wire.

[0076] Specifically, the wire is made of ML15 carbon steel. For example... Figure 1 and Figure 2 As shown, there are two fastening coils 11. The first connector is a boss 12 extending away from the fastening coil 11, and the boss 12 is located in the middle of the wire. The second connector is a hook 13 extending towards the boss 12, and the two hooks 13 are located at the two ends of the wire, respectively.

[0077] Fasteners include adjusting plate 21 and bolt 31, such as Figure 3 and Figure 4As shown, the adjusting plate 21 has two fixing through holes 211 at both ends, and a fastening through hole 212 is provided between the two fixing through holes 211. Two hooks 13 pass through the corresponding fixing through holes 211 and are welded to them. The fastening through hole 212 has an internal thread adapted to the bolt 31. The adjusting plate 21 has inwardly folded edges around its perimeter to increase overall strength; the folded edge width is approximately 2mm. Figure 4 As shown, ensure that the adjusting plate 21 does not deform after tightening. In this application, the distance between the hook 13 and the fastening coil 11 matches the distance from the fixing through hole 211 to the edge, ensuring that the adjusting plate 21 is snapped between the hook 13 and the fastening coil 11.

[0078] like Figure 7 As shown, the washer 41 has a second connecting through hole 42. The diameter of the second connecting through hole 42 is slightly larger than the diameter of the connecting part 312 but smaller than the diameter of the transition part 313, which just blocks the washer 41 at the position of the transition part 313, thus playing a blocking role. The outer diameter of the washer 41 is only 2mm larger than the inner diameter to avoid size discrepancies and insufficient strength, which could lead to deformation under stress.

[0079] like Figure 6 As shown, the top of the bolt 31 is provided with a fixing surface 314, and the fixing surface 314 is designed with a hexagonal nut structure, which has good force bearing and can be easily driven in.

[0080] like Figure 5 As shown, bolt 31 includes a connecting portion 312, a transition portion 313, and a threaded portion 311. The threaded portion 311 is connected to the fastening through hole 212 via threads. The diameter of the threaded portion 311 is approximately 6 mm. The thickness of the threaded portion 311 determines the strength of bolt 31, ensuring that it will not deform after fixing. The length of the threaded portion 311 is determined based on the actual tightening effect, ensuring that it can be tightened. The outer surface of the connecting portion 312 is smooth, and the length of the connecting portion 312 is approximately 5 mm, with a diameter of approximately 4 mm. The transition portion 313 is beveled, where a washer 41 is installed. The washer 41 is inserted from the bottom of bolt 31. The diameter of the second connecting through hole 42 in the washer 41 is slightly larger than the diameter of the connecting portion 312 but smaller than the diameter of the bevel in the transition portion 313, just enough to stop the washer 41 at this point, thus serving as a blocking function.

[0081] like Figures 8-10As shown, in this application, the connecting part 312 abuts against the boss 12 via a washer 41. Since the boss 12 is formed by winding wire, it is necessarily a hollow structure with a first connecting through hole 121 formed by bending wire. In this application, the connecting part 312 is snapped into the first connecting through hole 121 to ensure a stable abutment between the bottom of the bolt 31 and the boss 12. The washer 41 is provided with a second connecting through hole 42. The outer diameter of the connecting part 312 is smaller than the outer diameter of the threaded part 311, and the inner diameter of the second connecting through hole 42 is smaller than the outer diameter of the transition part 313. The connecting part 312 passes through the second connecting through hole 42 and the first connecting through hole 121 in sequence.

[0082] When bolt 31 is tightened, the bottom of bolt 31 is fixedly abutted against boss 12. At the same time, bolt 31 drives adjusting plate 21 and hook 13 to move away from boss 12, causing fastening coil 11 to contract and thus fasten the pipe fitting. When bolt 31 is loosened, the bottom of bolt 31 is fixedly abutted against boss 12. At the same time, bolt 31 drives adjusting plate 21 and hook 13 to move closer to boss 12, thus loosening fastening coil 11.

[0083] The fastening method of the fastening assembly of this application includes: fitting a fastening coil 11 on the outside of the pipe fitting; using a fastener to drive the first connector and the second connector to move away from each other; causing the inner diameter of the fastening coil 11 to shrink, thereby achieving fastening of the pipe fitting.

[0084] Specifically, first take out the adjustment plate 21, align the two fixing through holes 211 in the adjustment plate 21 with the two hooks 13, and then snap the adjustment plate 21 into the two hooks 13.

[0085] Insert bolt 31 into the fastening through hole 212 from the front of the adjusting plate 21, and tighten bolt 31. When bolt 31 passes through the fastening through hole 212, place washer 41 on the side of boss 12 near hook 13, and continue to tighten bolt 31 so that bolt 31 passes through the second connecting through hole 42 in washer 41. The connecting part 312 and the transition part 313 in bolt 31 are engaged in the second connecting through hole 42 in washer 41.

[0086] The fastening coil 11 is snapped onto the outside of the drain pipe 51. The bolt 31 is tightened with a tool. When the bolt 31 is tightened, the washer 41 limits the transition part 313 in the bolt 31. As the thread of the bolt 31 is tightened, the distance between the adjusting plate 21 and the washer 41 increases, that is, the distance between the adjusting plate 21 and the boss 12 increases. Since the hook 13 and the adjusting plate 21 are fixed together, the distance between the hook 13 and the boss 12 increases, thereby achieving the contraction of the fastening coil 11.

[0087] This application is simple and convenient to operate, and can avoid the phenomenon of unstable fastening caused by the size deviation of the pipe fittings, improve the assembly efficiency and assembly stability of the pipe fittings, and avoid the defects of the pipe fittings not being fastened or coming off under force after assembly.

[0088] Example 4

[0089] like Figure 11 As shown, this application provides a fastening device for the drain pipe 51 of a hoist, including the fastening assembly in Embodiment 3. The fastening assembly is used to fix the drain pipe 51 and the drain nozzle in the hoist. When it is necessary to fix the drain pipe 51 and the drain nozzle, first take out the adjusting plate 21, align the two fixing through holes 211 in the adjusting plate 21 with the two hooks 13, and then snap the adjusting plate 21 into the two hooks 13.

[0090] Insert bolt 31 into the fastening through hole 212 from the front of the adjusting plate 21, and tighten bolt 31. When bolt 31 passes through the fastening through hole 212, place washer 41 on the side of boss 12 near hook 13, and continue to tighten bolt 31 so that bolt 31 passes through the second connecting through hole 42 in washer 41. The connecting part 312 and the transition part 313 in bolt 31 are engaged in the second connecting through hole 42 in washer 41.

[0091] Secure the fastening coil 11 to the outside of the drain pipe 51.

[0092] The drain pipe 51 is fitted onto the drain nozzle, and the bolt 31 is tightened using a tool. As the bolt 31 is tightened, the washer 41 limits the transition portion 313 within the bolt 31. As the threads of the bolt 31 are continuously screwed in, the distance between the adjusting plate 21 and the boss 12 continuously increases, thereby increasing the distance between the boss 12 and the hook 13, achieving coil contraction, and ultimately securing the drain pipe 51. This solves the problems of the drain pipe 51 not being securely fastened after assembly and easily coming loose under stress in the prior art.

[0093] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0094] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0095] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0096] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fastening assembly for fastening pipe fittings, characterized in that, include: A fastening coil (11) made of wire; A first connector and a second connector are located on the side of the fastening coil (11), the first connector and the second connector being located at the starting end and the ending end of the fastening coil (11), respectively; A fastener that connects a first connector and a second connector respectively, and the fastener is capable of moving the first connector and the second connector toward each other or toward each other.

2. A fastening assembly according to claim 1, characterized in that, The fastener includes an adjusting plate (21) and a bolt (31). The adjusting plate (21) is fixedly connected to the second connecting member. The adjusting plate (21) is provided with a fastening through hole (212). The bolt (31) passes through the fastening through hole (212) and abuts against the first connecting member.

3. A fastening assembly according to claim 1, characterized in that, There are two fastening coils (11), which are stacked and are made of the same wire.

4. A fastening assembly according to claim 3, characterized in that, The first connector is located in the middle of the wire and is a boss (12) extending away from the fastening coil (11).

5. A fastening assembly according to claim 4, characterized in that, The second connector consists of two parallel connectors, with each connector located at one end of the wire. The second connector is a hook (13) extending toward the boss (12).

6. A fastening assembly according to claim 5, characterized in that, The fastener includes an adjusting plate (21) and a bolt (31). The adjusting plate (21) is fixedly connected to the hook (13). The adjusting plate (21) is provided with a fastening through hole (212), which is located between the two hooks (13). The bolt (31) passes through the fastening through hole (212) and abuts against the boss (12).

7. A fastening assembly according to claim 6, characterized in that, The adjusting plate (21) is also provided with two fixing through holes (211), which are located on both sides of the fastening through hole (212), and the two hooks (13) are respectively fixed inside the two fixing through holes (211).

8. A fastening assembly according to claim 6, characterized in that, The bolt (31) includes a connecting part (312) and a threaded part (311), the threaded part (311) being threadedly connected to the fastening through hole (212); the connecting part (312) abuts against the boss (12) through a washer (41); The boss (12) is provided with a first connecting through hole (121), and the washer (41) is provided with a second connecting through hole (42). The outer diameter of the connecting part (312) is smaller than the outer diameter of the threaded part (311), and the inner diameter of the second connecting through hole (42) is smaller than the outer diameter of the threaded part (311). The connecting part (312) passes through the second connecting through hole (42) and the first connecting through hole (121) in sequence.

9. A fastening device for a ceiling-mounted machine drain pipe (51), characterized in that, Includes a fastening assembly as described in any one of claims 1-8.

Images