A coupler

Abstract

The application discloses a coupler installed on a device table, comprising a main body provided with an electrode ring and a fixing ring, the main body is provided with a radially protruding pressing part, the main body is adapted to pass through the installation hole of the device table and is screw-locked with the fixing ring located below the device table through a rotating buckle structure, so that the pressing part is pressed towards the upper surface of the device table; the rotating buckle structure comprises a protruding part and a guide clamping groove matched with each other, one of the protruding part and the guide clamping groove is arranged on the outer side wall of the main body, and the other is arranged on the inner side wall of the fixing ring, and the two ends of the guide clamping groove in the circumferential direction are provided with guide inclined surfaces inclined in the same direction, and the guide inclined surfaces are configured to guide the protruding part to rotate into and be clamped in the guide clamping groove when the main body and the fixing ring rotate relatively. The screw-locking of the main body and the fixing ring is realized through the rotating buckle structure, the installation and fixing of the coupler on the device table can be completed without tools, the installation and maintenance process is greatly simplified, and the operation cost is reduced.

Description

Technical Field

[0001] This application relates to the field of coupler technology, and specifically to a coupler. Background Technology

[0002] Couplers, as key components for achieving electrical connections, are widely used in small household appliances such as tea bar machines, coffee machines, and water dispensers. Their main function is to achieve circuit conduction through the connection of upper and lower couplers, providing power to the heating, control, and other modules of the equipment. In equipment such as tea bar machines, couplers are usually installed on the equipment tabletop to connect utensils such as kettles placed on the table.

[0003] Existing technologies for coupler installation present several problems: Traditional couplers often use screws for fixing, securing the main body to the equipment platform with multiple screws. This method requires specialized tools such as screwdrivers, making the installation process cumbersome and time-consuming. Furthermore, when repairing or replacing the coupler, the equipment top cover must be removed before unscrewing the fixing screws, which is complex and prone to secondary damage such as stripped screws and broken studs, significantly increasing maintenance costs and time. During long-term use, factors such as vibration, temperature changes, or external impacts can cause the coupler to loosen, leading to poor electrical contact. This can lead to equipment malfunctions such as power outages, overheating, and even short circuits, posing serious safety hazards. During use, liquid spills are inevitable in equipment like tea bar machines. Traditional couplers lack an effective sealing structure between the coupler and the equipment surface, or the seals are not securely fixed, allowing liquid to easily seep into the equipment through installation gaps, damaging circuit components and affecting the equipment's lifespan. Furthermore, the strong and weak current wire harnesses connected by the coupler often lack dedicated limiting structures, resulting in tangled and messy wiring. This not only increases assembly difficulty but may also cause instability due to strong and weak current interference. The messy wiring also complicates later maintenance and increases troubleshooting time. Utility Model Content

[0004] The purpose of this application is to overcome the defects of existing couplers, such as cumbersome installation, insufficient stability, and poor sealing, and to provide a coupler that achieves the technical effects of quick disassembly and assembly, stable connection, and reliable sealing through the design of a rotating snap-fit ​​structure and auxiliary structures such as sealing gaskets.

[0005] The technical solution adopted in this application is as follows: A coupler, mounted on a device table, includes a main body with an electrode ring and a retaining ring. The main body has a radially protruding clamping part. The main body is adapted to pass through a mounting hole in the device table and is screwed and locked with the retaining ring located below the device table via a rotating snap-fit ​​structure, so that the clamping part presses against the upper surface of the device table. The rotating snap-fit ​​structure includes a cooperating protrusion and a guide groove. One of the protrusion and the guide groove is located on the outer side wall of the main body, and the other is located on the inner side wall of the retaining ring. The guide groove has guide inclined surfaces inclined in the same direction at both ends in its circumferential direction. The guide inclined surfaces are configured such that when the main body and the retaining ring rotate relative to each other, they can guide the protrusion to screw into and engage with the guide groove.

[0006] In this technical solution, the main body and the fixing ring are screwed and locked together through a rotating snap-fit ​​structure. The coupler can be installed and fixed on the equipment table without tools, which greatly simplifies the installation and maintenance process and reduces operating costs. At the same time, the guide slopes at both ends of the guide slot mean that the coupler does not need to be precisely aligned during installation. The protrusion can be automatically guided into the snap-fit ​​position during relative rotation, ensuring that the protrusion screws in smoothly and snaps in accurately, improving assembly efficiency and reliability. This structural design effectively reduces the installation difficulty and can achieve screw-fit locking even with a certain deviation, while ensuring reliable pressing of the clamping part on the equipment table.

[0007] The guide slot is provided with a stop surface, which is used to abut against the protrusion when the protrusion slides into the guide slot, so as to restrict the protrusion from continuing to rotate.

[0008] In this technical solution, by setting a stop surface in the guide slot, a clear endpoint positioning is provided for the rotation assembly process, which can accurately limit the rotation stroke of the protrusion, avoid structural damage or poor sealing due to excessive rotation, and at the same time provide clear positioning feedback for assembly, ensuring reliable locking of the rotation buckle structure.

[0009] The rotating buckle structure also includes a limiting structure, which includes a limiting recess on the protrusion and a limiting protrusion in the guide groove; when the protrusion is engaged in the guide groove, the limiting protrusion is engaged in the limiting recess to achieve circumferential limiting.

[0010] In this technical solution, circumferential positioning is achieved through the cooperation of the limiting recess and the limiting protrusion. After rotation into place, a circumferential locking function is provided, effectively preventing reverse rotation of the main body and the fixing ring due to vibration or accidental external forces during use. This prevents the rotating buckle structure from loosening, significantly improving the structural stability of the coupler after installation. Furthermore, the "click" sound produced by the cooperation of the limiting recess and the limiting protrusion allows installers to clearly perceive the assembly status through touch or hearing, improving installation accuracy and user experience.

[0011] The protrusion is located on the inner side wall of the fixing ring, and the guide groove is located on the outer side wall of the main body; the guide groove is surrounded by a rib protruding from the outer side wall of the main body, the inner wall of one end of the rib forms the stop surface, and the guide slope is formed at both ends of the rib.

[0012] In this technical solution, the guide groove is formed by the protruding ribs, which also form a stop surface and a guide slope. This simplifies the processing technology of the rotating buckle structure, enhances the structural strength, and ensures the smoothness of the screw-in process of the protrusion and the stability of the snap-fit.

[0013] The number of the rotating buckle structures is at least two, and all rotating buckle structures are evenly distributed along the circumference.

[0014] In this technical solution, the rotating buckle structure is set to at least two and evenly distributed around the circumference, so that the force on the main body and the fixing ring is more balanced, avoiding the problem of poor sealing or structural deformation caused by stress concentration on one side, as well as the structural damage caused by local stress concentration. At the same time, it improves the overall connection strength, prevents the coupler from falling off when a single structure fails, and extends the service life.

[0015] The coupler also includes a sealing gasket, which is fitted onto the main body and located below the clamping part. When the clamping part is pressed against the upper surface of the equipment table, the sealing gasket is compressed between the clamping part and the equipment table.

[0016] In this technical solution, by adding a sealing gasket and compressing the sealing gasket during clamping, the gap between the clamping part and the equipment table surface can be filled, the sealing performance of the coupler can be improved, and liquid or dust can be prevented from entering the equipment. At the same time, the elasticity of the sealing gasket can be used to enhance the friction between the main body and the table surface, further improving the installation stability.

[0017] The end face of the pressing part that contacts the sealing gasket is provided with a first anti-slip structure, and the top surface of the fixing ring that contacts the equipment table is provided with a second anti-slip structure; the first and second anti-slip structures are configured to generate rotational resistance when the sealing gasket is compressed, so as to prevent the rotational buckle structure from loosening.

[0018] In this technical solution, the first and second anti-slip structures generate rotational resistance when the sealing gasket is compressed. In particular, under the action of the rebound force generated after the sealing gasket is compressed, the anti-slip structure can generate greater frictional resistance, which can effectively resist the tendency of the rotating buckle structure to loosen unexpectedly, avoid the coupler from becoming circumferentially loose under long-term use or vibration environment, and reduce the risk of poor contact or equipment failure caused by loosening.

[0019] Both the first and second anti-slip structures have multiple circumferentially distributed spiral anti-slip ribs.

[0020] In this technical solution, the spiral structure effectively enhances the contact friction with the sealing gasket or the tabletop, thereby improving the rotational resistance. In particular, for the first anti-slip structure, the spiral anti-slip ribs not only provide excellent anti-slip performance, but their special spiral direction can also generate axial force during rotation, further compressing the sealing gasket and forming a self-tightening effect. This design greatly enhances the anti-loosening effect.

[0021] The bottom of the outer wall of the fixing ring is provided with multiple circumferentially spaced cable slots for limiting and isolating cables respectively.

[0022] In this technical solution, the cable slots at the bottom of the fixing ring are used to classify, limit, and isolate the cables, preventing them from becoming tangled and making it easier to quickly identify them during later maintenance. At the same time, it can separate the arrangement of strong and weak current cables, reduce electromagnetic interference, lower the risk of short circuits, and improve the safety of equipment use.

[0023] The outer circumferential surface of the fixing ring is shaped into a polygonal structure with multiple planes.

[0024] In this technical solution, the outer circumference of the fixed ring is designed as a polygonal structure, providing a stable point of force for manual rotation. This design allows operators to easily apply force, avoids the slippage that may occur on a circular surface, and improves assembly efficiency and ease of use. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 An exploded view of the coupler provided in the embodiments of this application; Figure 2 A cross-sectional view of the main body and the fixing ring in the state of being screwed and locked on the equipment table, as provided in the embodiment of this application; Figure 3 A schematic diagram of the structure provided in an embodiment of this application, showing the main body and the fixing ring in a separated state; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the fixing ring provided in an embodiment of this application; Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0026] List of components and reference numerals: 1. Equipment work surface; 2. Main body, 21. Pressing part, 211. First anti-slip structure, 22. Guide groove, 23. Raised rib, 231. Guide slope, 232. Stop surface, 24. Limiting protrusion; 3. Fixing ring, 31. Protrusion, 311. Limiting recess, 32. Second anti-slip structure, 33. Cable slot; 4. Sealing gasket. Detailed Implementation

[0027] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0029] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0032] In the embodiments of this application, reference is made to Figures 1 to 6 This application provides a coupler. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the coupler is installed on the equipment platform 1 and includes a main body 2 with an electrode ring and a fixing ring 3. The main body 2 has a radially protruding pressing part 21. The main body 2 is adapted to pass through the mounting hole of the equipment platform 1 and is locked with the fixing ring 3 located below the equipment platform 1 by a rotating buckle structure, so that the pressing part 21 presses against the upper surface of the equipment platform 1. The rotating buckle structure includes a protrusion 31 and a guide groove 22 that cooperate with each other. One of the protrusion 31 and the guide groove 22 is located on the outer side wall of the main body 2 and the other is located on the inner side wall of the fixing ring 3. The guide groove 22 has guide inclined surfaces 231 that are inclined in the same direction at both ends in its circumferential direction. The guide inclined surfaces 231 are configured such that when the main body 2 and the fixing ring 3 rotate relative to each other, they can guide the protrusion 31 to screw into and engage in the guide groove 22.

[0034] It should be noted that the specific application of the coupler in this application is not limited. For example, it can be applied to tea bar machines, as well as water dispensers, coffee machines, and other equipment. Based on this, this application does not specifically limit the specific form of the equipment tabletop 1. Taking its application in a tea bar machine as an example, an equipment tabletop 1 can be provided on the top of the tea bar machine. This equipment tabletop 1 is usually made of materials such as metal, plastic, or glass, and serves as a platform that constitutes the appearance of the tea bar machine and is used to hold water buckets or teaware. A mounting hole is provided on the equipment tabletop 1 for installing the coupler of this solution. In addition, the accompanying drawings only show an embodiment in which the protrusion 31 is located on the inner side wall of the fixing ring 3 and the guide groove 22 is located on the outer side wall of the main body 2. In embodiments not shown, the positions of the protrusion 31 and the guide groove 22 can be interchanged, that is, the protrusion 31 is located on the outer side wall of the main body 2 and the guide groove 22 is located on the inner side wall of the fixing ring 3.

[0035] Figure 3 The image shows the main body 2 and the fixing ring 3 in a separated state. Figure 2 The image shows the main body 2 and the fixing ring 3 in a screw-locked state, clamped and fixed on the upper and lower sides of the equipment platform 1, respectively. This application abandons the traditional screw fixing method; during assembly, simply passing the main body 2 through the mounting hole on the platform and rotating it relative to the fixing ring 3 completes the fixing. In actual installation, the operation process can be selected according to site conditions; for example, keeping the fixing ring 3 stationary while rotating only the main body 2, keeping the main body 2 stationary while rotating only the fixing ring 3, or rotating both the main body 2 and the fixing ring 3 relative to each other simultaneously. The entire installation operation requires no tools and can be performed by hand, greatly simplifying the installation and maintenance process and reducing operating costs.

[0036] The radially protruding clamping part 21 of the main body 2 presses against the table surface during screwing, ensuring a tight lock between the coupler and the table surface through pressure, thus improving the loosening problem caused by inconsistent screw tightness in traditional installations. In the rotating snap-fit ​​structure, the matching design of the protrusion 31 and the guide groove 22, along with the guide slopes 231 at both ends of the guide groove 22, allows the protrusion 31 to smoothly slide into and precisely engage along the slopes during rotation, avoiding assembly misalignment and effectively reducing installation difficulty. Even with some deviation, screwing and locking can be achieved smoothly, while ensuring reliable clamping of the clamping part 21 against the equipment table surface 1. In particular, because the guide slopes 231 at both ends of the guide groove 22 are inclined in the same direction, Figure 4 In the shown state, the guide ramp 231 on the right is the main guide surface, and its inclination angle is precisely matched with the screwing trajectory of the protrusion 31. During assembly, the protrusion 31 can smoothly slide into the guide slot 22 along the ramp without repeated alignment. However, if the operator manually rotates the fixing ring 3 or the main body 2, and the protrusion 31 misses the guide slot 22 due to operational deviation, then... Figure 4In the state shown, the guide slope 231 on the left can play a supplementary role. The protrusion 31 will continue to slide along the supplementary guide surface with the rotation stroke and enter the next round of engagement stroke. There is no need to rotate in the opposite direction to adjust the position. It is especially suitable for schemes with multiple circumferential rotating buckle structures. Under the guidance of the guide slope 231 on the left, the protrusion 31 can quickly and smoothly rotate toward the next guide slot 22.

[0037] As a preferred embodiment of this application, such as Figure 3 and Figure 4 As shown, a stop surface 232 is provided in the guide groove 22. This stop surface abuts against the protrusion 31 when it slides into the guide groove 22, thus restricting further rotation of the protrusion 31. In actual assembly, this stop effect suddenly increases the rotational resistance, providing clear mechanical installation feedback. This allows operators to judge whether the assembly is in place without relying on experience, ensuring assembly consistency for each product. Simultaneously, it effectively prevents deformation and damage to the protrusion 31 or guide groove 22 due to excessive rotation. The rigid contact between the stop surface 232 and the protrusion 31 also shares some of the radial force, preventing slow loosening of the rotating snap-fit ​​structure due to long-term stress.

[0038] In a preferred embodiment, such as Figure 4 and Figure 6 As shown, the rotating snap-fit ​​structure also includes a limiting structure, which includes a limiting recess 311 on the protrusion 31 and a limiting protrusion 24 in the guide groove 22. When the protrusion 31 is engaged in the guide groove 22, the limiting protrusion 24 engages in the limiting recess 311 to achieve circumferential limiting. Those skilled in the art will understand that during the transportation or daily use of the tea bar machine, it is difficult to avoid transportation bumps and water pump vibrations, which can easily cause the rotating snap-fit ​​structure to loosen on its own. Therefore, by having the protrusion 31 engage in the guide groove 22 to provide a circumferential locking function, it can effectively prevent the main body 2 and the fixing ring 3 from rotating in the opposite direction due to vibration or accidental external force during use, preventing the rotating snap-fit ​​structure from loosening and significantly improving the structural stability of the coupler after installation. Moreover, the "click" sound produced by the engagement of the limiting recess 311 and the limiting protrusion 24 allows the installer to clearly perceive the assembly status through touch or hearing, improving the accuracy of installation and the user experience.

[0039] Furthermore, such as Figure 4As shown, in the embodiment where the protrusion 31 is located on the inner wall of the fixing ring 3 and the guide groove 22 is located on the outer wall of the main body 2, the guide groove 22 is formed by a rib 23 protruding from the outer wall of the main body 2. The inner wall of one end of the rib 23 forms a stop surface 232, and the guide slope 231 is formed at both ends of the rib 23. Preferably, the rib 23 can be designed as an L-shaped structure, which can naturally form the guide groove 22. Moreover, after the protrusion 31 is screwed into the guide groove 22, the bottom edge of the L-shaped structure restricts the axial displacement of the protrusion 31 along the fixing ring 3, and the side edge forms the stop surface 232, restricting the protrusion 31 from continuing to rotate in the screwing direction. Therefore, by forming the guide groove 22 with the rib 23 and forming the stop surface 232 and the guide slope 231, the processing technology of the rotary buckle structure is simplified, the structural strength is enhanced, and the smoothness of the screwing process of the protrusion 31 and the stability of the snap-fit ​​are ensured.

[0040] In a preferred embodiment of this application, the number of rotating snap-fit ​​structures is at least two, and all rotating snap-fit ​​structures are evenly distributed circumferentially. For example, when there are two rotating snap-fit ​​structures, they can be arranged circumferentially spaced 180° apart; when there are three rotating snap-fit ​​structures, they can be arranged circumferentially spaced 120° apart. This design makes the force on the main body 2 and the fixing ring 3 more balanced, avoiding problems such as poor sealing or structural deformation caused by stress concentration on one side, and avoiding structural damage caused by local stress concentration. At the same time, it improves the overall connection strength, prevents the coupler from falling off when a single structure fails, and extends the service life.

[0041] As a preferred embodiment of this application, such as Figure 1 and Figure 2 As shown, the coupler also includes a sealing gasket 4, which is fitted onto the main body 2 and located below the clamping part 21. When the clamping part 21 presses against the upper surface of the equipment table 1, the sealing gasket 4 is compressed between the clamping part 21 and the equipment table 1. Compared to directly pressing the clamping part 21 against the upper surface of the equipment table 1, the addition of the sealing gasket 4 not only fills the gap between the clamping part 21 and the equipment table 1, improving the coupler's sealing performance and preventing liquid or dust from entering the equipment, but also utilizes the elasticity of the sealing gasket 4 to enhance the friction between the main body 2 and the table, further improving installation stability. The sealing gasket 4 is preferably made of silicone rubber, whose good flexibility can also buffer the close contact between the main body 2 and the fixing ring 3, avoiding stress concentration that could cause cracks or even damage.

[0042] Furthermore, such as Figure 3 and Figure 5As shown, a first anti-slip structure 211 is provided on the end face of the pressing part 21 that contacts the sealing gasket 4, and a second anti-slip structure 32 is provided on the top surface of the fixing ring 3 that contacts the equipment table surface 1. The first anti-slip structure 211 and the second anti-slip structure 32 are configured to generate rotational resistance when the sealing gasket 4 is compressed, so as to resist the loosening of the rotating buckle structure. Under the action of the rebound force generated after the sealing gasket 4 is compressed, the anti-slip structure can generate greater frictional resistance, which can effectively resist the tendency of the rotating buckle structure to loosen unexpectedly, avoid the coupler from circumferential loosening under long-term use or vibration environment, and reduce the risk of poor contact or equipment failure caused by loosening. Moreover, the first anti-slip structure 211 is in direct contact with the sealing gasket 4. When the sealing gasket 4 is compressed, the first anti-slip structure 211 will embed into the upper surface of the sealing gasket 4, generating significant rotational resistance. This resistance can continuously resist the tendency of loosening caused by vibration during long-term use of the equipment, which is especially suitable for scenarios such as tea bar machines that require frequent placement of kettles and scenarios where water pumps vibrate during water pumping.

[0043] In a preferred embodiment, both the first anti-slip structure 211 and the second anti-slip structure 32 consist of multiple circumferentially distributed spiral anti-slip ribs. The first anti-slip structure 211, being a spiral anti-slip rib, can be tightly embedded in the upper surface of the sealing gasket 4. The second anti-slip structure 32, also a spiral anti-slip rib, makes line contact with the bottom surface of the equipment platform 1 rather than surface contact, generating greater pressure per unit area and enhancing friction. Preferably, the spiral directions of the first anti-slip structure 211 and the second anti-slip structure 32 are opposite, and the spiral direction of the first anti-slip structure 211 is opposite to the rotational locking direction of the main body 2, while the spiral direction of the second anti-slip structure 32 is opposite to the rotational locking direction of the fixing ring 3. This further increases the resistance to reverse rotation and greatly enhances the anti-loosening effect.

[0044] In addition to the spiral anti-slip ribs, in other embodiments, the first anti-slip structure 211 and the second anti-slip structure 32 can also adopt other suitable structures, such as circumferentially spaced convex structures, radially extending strip anti-slip ribs, etc., or texture structures formed by surface roughening treatment.

[0045] As a preferred embodiment of this application, such as Figure 1 and Figure 5 As shown, the bottom of the outer wall of the fixing ring 3 has multiple circumferentially spaced cable slots 33 for respectively limiting and isolating cables. During actual assembly, high-voltage cables and low-voltage cables can be inserted into different slots to achieve physical isolation and separate arrangement, reducing electromagnetic interference, lowering the risk of short circuits, and improving equipment safety. The circumferentially spaced distribution of multiple cable slots 33 ensures that the cable bundle is arranged orderly along the outer periphery of the fixing ring 3, avoiding the tangling problem of traditional cable bundling methods, and allowing for quick identification of cable functions during maintenance.

[0046] As a preferred embodiment of this application, such as Figure 5 As shown, the outer circumference of the fixing ring 3 is formed into a polygonal structure with multiple planes, such as a hexagonal structure, an octagonal structure, etc. Compared with a circular outer circumference, each plane of the polygonal structure can serve as a force-bearing surface. During assembly, the contact area between the fingers and the planes increases, significantly improving friction and preventing slippage during rotation, thus improving assembly efficiency and ease of use.

[0047] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0048] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0049] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A coupler, mounted on a device platform, comprising a main body with an electrode ring and a fixing ring, characterized in that, The main body is provided with a radially protruding pressing part. The main body is adapted to pass through the mounting hole of the equipment table and is locked with the fixing ring located below the equipment table through a rotating buckle structure, so that the pressing part presses against the upper surface of the equipment table. The rotating buckle structure includes a protrusion and a guide groove that cooperate with each other. One of the protrusion and the guide groove is located on the outer side wall of the main body, and the other is located on the inner side wall of the fixing ring. The guide groove has guide inclined surfaces that are inclined in the same direction at both ends in its circumferential direction. The guide inclined surfaces are configured such that when the main body and the fixing ring rotate relative to each other, they can guide the protrusion to rotate into and engage with the guide groove.

2. The coupler according to claim 1, characterized in that, The guide slot is provided with a stop surface, which is used to abut against the protrusion when the protrusion slides into the guide slot, so as to restrict the protrusion from continuing to rotate.

3. The coupler according to claim 2, characterized in that, The rotating buckle structure also includes a limiting structure, which includes a limiting recess on the protrusion and a limiting protrusion in the guide groove; when the protrusion is engaged in the guide groove, the limiting protrusion is engaged in the limiting recess to achieve circumferential limiting.

4. The coupler according to claim 3, characterized in that, The protrusion is located on the inner side wall of the fixing ring, and the guide groove is located on the outer side wall of the main body; the guide groove is surrounded by a rib protruding from the outer side wall of the main body, the inner wall of one end of the rib forms the stop surface, and the guide slope is formed at both ends of the rib.

5. The coupler according to any one of claims 1 to 4, characterized in that, The number of the rotating buckle structures is at least two, and all rotating buckle structures are evenly distributed along the circumference.

6. The coupler according to claim 1, characterized in that, It also includes a sealing gasket, which is fitted onto the main body and located below the pressing part. When the pressing part is pressed against the upper surface of the equipment table, the sealing gasket is compressed between the pressing part and the equipment table.

7. The coupler according to claim 6, characterized in that, The end face of the pressing part that contacts the sealing gasket is provided with a first anti-slip structure, and the top surface of the fixing ring that contacts the equipment table is provided with a second anti-slip structure; the first and second anti-slip structures are configured to generate rotational resistance when the sealing gasket is compressed, so as to prevent the rotational buckle structure from loosening.

8. The coupler according to claim 7, characterized in that, Both the first and second anti-slip structures have multiple circumferentially distributed spiral anti-slip ribs.

9. The coupler according to claim 1, characterized in that, The bottom of the outer wall of the fixing ring is provided with multiple circumferentially spaced cable slots for limiting and isolating cables respectively.

10. The coupler according to claim 1, characterized in that, The outer circumferential surface of the fixing ring is shaped into a polygonal structure with multiple planes.

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