Modularized air switch installation structure

Abstract

The invention provides a modularized air switch mounting structure, which comprises a guide rail main body, an air switch and a buckle structure, and is characterized in that the air switch can be locked on the guide rail main body through the buckle structure; the guide rail main body comprises clamping outer plates, a conductive groove and a mounting part, an opening is formed in the front side of the conductive groove, and L-shaped clamping outer plates are integrally formed on the upper side and the lower side of the opening and the conductive groove and are used for mounting an air switch; mounting parts are integrally formed on the upper and lower sides of the rear side of the conductive groove respectively; a plurality of mounting holes are formed in the mounting part and are used for mounting the guide rail main body through bolts; a conductive structure is mounted in the conductive groove; the outer side wall of the air switch is provided with a power connection assembly matched with the conductive structure. The power connection assembly is electrically connected with an electrical element in the air switch; when the plurality of air switches are installed on the guide rail main body, the plurality of air switches can be directly connected to the conductive structure through the power connection assembly, thereby realizing mutual cooperation among the air switches.

Description

Technical Field

[0001] This invention relates to the field of air switches, and more particularly to a modular air switch mounting structure. Background Technology

[0002] Air circuit breakers, also known as low-voltage circuit breakers, are an indispensable core protection component in low-voltage power distribution systems. They are mainly used to provide protection against overload, short circuit, and undervoltage. They are widely used in industrial plants, commercial complexes, data centers, residential communities, and other scenarios. With the continuous growth of global electricity demand, the market has placed higher demands on the installation efficiency, electrical reliability, safety of use, and modular expandability of air circuit breakers.

[0003] like Figure 1 As shown, the traditional installation method of air circuit breakers mainly uses standard rails and wire connections. That is, the air circuit breaker is mechanically fixed by snapping it into the rail using the buckle structure on the back, and then the wiring terminals of the air circuit breaker are connected to the busbar or adjacent switches by wires to complete the construction of the electrical circuit. This method has been used for decades, but its inherent defects have gradually become a bottleneck restricting the upgrading of power distribution systems.

[0004] Traditional circuit breaker electrical connections rely on manual wiring. First, the insulation layer of the wires must be stripped, and the stripped length must be controlled. Too long, and it will expose the wires; too short, and it will have poor contact. Then, the wires are inserted into the circuit breaker terminals. The phase sequence must be matched, such as L1, L2, L3, N, etc., as incorrect wiring is easy to occur. Finally, the terminal screws are tightened with a screwdriver, and the torque must be controlled. Too much torque will damage the wires or terminals; too little will cause them to loosen. For example, it takes a skilled electrician 5-10 minutes to complete the wiring of a 16A circuit breaker. If a distribution cabinet needs to install 20 circuit breakers, the wiring time will be 1.5-3 hours, accounting for more than 60% of the entire installation process. In addition, the wires of multiple circuit breakers are tangled together, which not only affects the aesthetics of the cabinet interior but also increases the difficulty of later debugging. Summary of the Invention

[0005] To address the problems of extremely low installation efficiency and high wiring complexity of existing air switches, this invention provides a modular air switch installation structure.

[0006] The modular air switch mounting structure provided by this invention adopts the following technical solution:

[0007] A modular air switch mounting structure includes a guide rail body, an air switch, and a snap-fit ​​structure. The air switch can be locked onto the guide rail body via the snap-fit ​​structure. The guide rail body includes a snap-fit ​​outer plate, a conductive groove, and a mounting part. The conductive groove has an opening on its front side, and L-shaped snap-fit ​​outer plates are integrally formed with the upper and lower sides of the opening for mounting the air switch. The upper and lower sides of the rear side of the conductive groove are integrally formed with mounting parts. The mounting part has several mounting holes inside for mounting the guide rail body with bolts. A conductive structure is installed inside the conductive groove. A power connection component that mates with the conductive structure is installed on the outer wall of the air switch. The power connection component is electrically connected to the electrical components inside the air switch.

[0008] Among them, when a number of the air switches are installed on the guide rail body, they can be directly connected to the conductive structure through the power connection component to realize the mutual cooperation between the various air switches;

[0009] Furthermore, the conductive structure includes an insulating pad, insulating spacers, and conductive strips. An insulating pad that conforms to the inner contour of the conductive groove is disposed inside the conductive groove. At least five insulating spacers are integrally formed on the outer side wall of the insulating pad. A conductive strip is fixedly connected between each insulating spacer. The conductive strip is connected to the control circuit of the application and is used to conduct electricity in conjunction with the power connection component.

[0010] Furthermore, the insulating pad and insulating spacer are made of resin material;

[0011] Furthermore, the cross-section of the insulating spacer is wedge-shaped, and a dovetail groove is formed between every two insulating spacers. The conductive strip is wedge-shaped and is fixed within the dovetail groove. The height of the conductive strip is higher than the height of the insulating spacer.

[0012] Furthermore, the power connection assembly includes a junction box and a conversion box; the junction box and conversion box are bolted to the outer wall of the air switch, wherein the junction box is used to electrically connect to the electrical components in the air switch via wires; a retaining block is bolted to the outer wall of the conversion box; used to insert into the conductive groove when installing the air switch; shortening the distance between the conversion box and the air switch; the conversion box and the retaining block have the same number of through holes corresponding to the positions of the conductive strips; a conductive copper ring connected to the wires in the junction box is embedded in the through holes; the conductive copper ring has internal threads and is threaded to a power connection bolt; when the power connection bolt is screwed in, the air switches are electrically connected through the power connection bolt and the conductive strip;

[0013] Furthermore, a rubber strip is provided between the portions of each conductive strip that extend out of the insulating spacer; the rubber strip is attached to the outer surface of the insulating spacer and is flush with the top of the conductive strip; a side sealing plate is integrally formed on the back of the card block corresponding to each rubber strip, and each through hole is provided between two side sealing plates, the two side sealing plates and the two rubber strips are relatively sealed to form a sealed space for the connection point between the electrical bolt and the conductive strip;

[0014] Furthermore, the air switch has a mating block with the same outline as the locking block and the side sealing plate installed inside by bolts, which is used to simultaneously insert into the conductive groove;

[0015] Furthermore, the conductive strip has a bimetallic composite structure, including a base layer and a conductive layer; the base layer is snapped between the insulating spacers; the conductive layer is used for the conductivity of the connecting bolt; the base layer can be made of steel or alloy steel; the conductive layer is made of copper.

[0016] Furthermore, the outer wall of the conversion box is provided with the same number of sealing grooves at the positions corresponding to the through holes. Each sealing groove is detachably connected to a sealing cover, which is used to seal the box after the power connection bolt is screwed in, preventing accidental contact and potential safety hazards.

[0017] In summary, the beneficial effects of the present invention are as follows:

[0018] This invention achieves a wireless electrical connection between the air switch and the rail through the design of the connection components and conductive structure, reducing installation time to 1-2 minutes per unit. Furthermore, the "wedge-shaped conductive strip + threaded connection bolt" design ensures high stability and adjustability of the conductive contact. Multiple sealing designs, including insulating pads, rubber strips, and sealing caps, provide dust and water protection and prevent accidental electric shock. The standardized rail and improved connection components are compatible with different models of existing air switches, supporting rapid expansion; adding an air switch only requires inserting it into the rail and tightening the bolts. Finally, the wireless design provides installation space for other intelligent components, reduces electromagnetic interference, and lays the foundation for intelligent features of the air switch, such as remote monitoring and fault warning.

[0019] In summary, this invention, through comprehensive innovation in the mechanical design, electrical connection, and safety protection of traditional air switch installation structures, solves the core problems restricting industry development and provides a brand-new solution for the high efficiency and intelligence of low-voltage power distribution systems. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation structure of an air switch in the prior art;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a side view of the overall structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of the mounting rail of the present invention;

[0024] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of part A in the middle;

[0025] Figure 6 This is a schematic diagram of the improved structure of the air switch of the present invention;

[0026] Figure 7 This is a schematic diagram of the electrical connection between the air switch and the mounting rail of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of part B;

[0028] Figure 9 This is a schematic diagram of the installation of the sealing cap of the present invention.

[0029] As shown in the figure: 1-Mounting bracket, 12-Snap-fit ​​part, 13-Air switch, 14-Snap-fit ​​structure, 2-Snap-fit ​​outer plate, 21-Conductive groove, 22-Mounting part, 23-Mounting hole, 3-Conductive structure, 31-Insulating pad, 32-Insulating spacer, 33-Conductive strip, 331-Base layer, 332-Conductive layer, 34-Rubber strip, 4-Junction box, 5-Conversion box, 51-Snap block, 511-Side sealing plate, 512-Sealed space, 52-Matching block, 6-Through hole, 61-Connecting bolt, 62-Connecting copper ring, 7-Sealing groove, 71-Sealing cover. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-9 The present invention will be further described in detail below:

[0031] This invention discloses a modular air switch mounting structure, such as... Figure 1-4 As shown, a modular air switch mounting structure includes a guide rail body, an air switch 13, and a snap-fit ​​structure. The air switch 13 can be locked onto the guide rail body via the snap-fit ​​structure. The guide rail body includes a snap-fit ​​outer plate 2, a conductive groove 21, and a mounting part 22. The conductive groove 21 has an opening on its front side, and L-shaped snap-fit ​​outer plates 2 are integrally formed on the upper and lower sides of the opening with the conductive groove 21 for mounting the air switch 13. The upper and lower sides of the rear side of the conductive groove 21 are integrally formed with mounting parts 22. The mounting part 22 has several mounting holes 23 inside for mounting the guide rail body with bolts. A conductive structure 3 is installed inside the conductive groove 21. A power connection component that cooperates with the conductive structure 3 is installed on the outer wall of the air switch 13. The power connection component is electrically connected to the electrical components inside the air switch 13.

[0032] Among them, when a number of air switches 13 are installed on the guide rail body, they can be directly connected to the conductive structure 3 through the power connection component to realize the mutual cooperation between the various air switches 13.

[0033] In the above embodiment, the overall structure consists of three main modules: the guide rail body, the air switch 13, and the snap-fit ​​structure. The air switch 13 is installed in a standardized manner through the guide rail and snap-fit, while the electrical connection is modularized through the connection components and the conductive structure 3. The L-shaped snap-fit ​​outer plate 2 is located on the upper and lower sides of the opening at the front of the conductive groove 21, guiding the air switch 13 into the guide rail and locking it with the snap-fit ​​structure. The conductive groove 21 is a hollow structure used to accommodate the conductive structure 3 and also serves as an insertion channel for the connection components, ensuring accurate electrical connections. The mounting part 22 is located at the rear of the conductive groove 21 and is bolted to the wall or cabinet. The main body is fixed, providing mechanical support for the entire structure. The air switch 13 is connected to the conductive structure 3 inside the main body of the guide rail through the power connection component. No additional wires are required, and the air switch 13, conductive structure 3, and control circuit are directly electrically connected. Multiple air switches 13 can be connected in parallel or series through the conductive structure 3. In this embodiment, there is no need to lay wires on site to connect the air switches 13, avoiding problems such as messy wires and wiring errors, reducing construction difficulty and later maintenance costs. The snap-fit ​​outer plate 2 of the guide rail body and the power connection component adopt a standardized design, which is compatible with different models of existing technology air switches 13, and has strong expandability.

[0034] like Figure 5As shown, the conductive structure 3 includes an insulating pad 31, insulating spacers 32, and conductive strips 33. An insulating pad 31, conforming to the internal contour of the conductive groove 21, is disposed inside the conductive groove 21. At least five insulating spacers 32 are integrally formed on the outer wall of the insulating pad 31, and a conductive strip 33 is fixedly connected between each insulating spacer 32. The conductive strip 33 is connected to the applied control circuit and is used to conduct electricity in conjunction with the connection assembly. The insulating pad 31 and insulating spacers 32 are made of resin material. The cross-section of the insulating spacer 32 is wedge-shaped. The structure consists of a dovetail groove between every two insulating spacers 32, and a wedge-shaped conductive strip 33 fixed within the dovetail groove. The height of the conductive strip 33 is higher than that of the insulating spacers 32. In this embodiment, the insulating pad 31 is completely fitted to the inner contour of the conductive groove 21, with a thickness ranging from 1mm to 5mm, isolating the conductive structure 3 from the guide rail body to prevent leakage. It also provides an installation base for the insulating spacers 32. The insulating spacers 32 are made of resin material, such as epoxy resin, and are integrally molded onto the insulating pad 31. The insulating spacer 32 is used to separate adjacent conductive strips 33 to avoid short circuits. It is fixed by a wedge-shaped dovetail groove. The cross-section of the insulating spacer 32 is wedge-shaped, and adjacent spacers form a dovetail groove. The conductive strip 33 also adopts a wedge structure. After being inserted into the dovetail groove, due to the "self-locking effect" of the wedge, the conductive strip 33 will become increasingly tighter, achieving a secure connection without additional fasteners. The height of the conductive strip 33 is higher than the insulating spacer 32, ranging from 0.5 to 1 mm. This ensures that the connecting components can directly contact the conductive strip 33, guaranteeing the reliability of the electrical connection. In this embodiment, the resin insulating pad 31 and spacer have high insulation resistance and arc resistance, effectively preventing leakage between the conductive strip 33 and the guide rail body, improving electrical safety. The design of the dovetail groove and wedge-shaped conductive strip 33 solves the problem of the conductive strip 33 being "easy to loosen and poorly contacted," ensuring that the conductive strip 33 will not fall off even with long-term vibration. The design of the conductive strip 33 being higher than the insulating spacer 32 avoids the risk of the connecting bolt 61 contacting the insulating material, ensuring the continuity of current transmission.

[0035] like Figure 6-8As shown, the power connection assembly includes a junction box 4 and a conversion box 5. The junction box 4 and conversion box 5 are bolted to the outer wall of the air switch 13. The junction box 4 is used to electrically connect to the electrical components in the air switch 13 via wires. A retaining block 51 is bolted to the outer wall of the conversion box 5. It is used to insert into the conductive groove 21 when installing the air switch 13 to shorten the distance between the conversion box 5 and the air switch 13. The conversion box 5 and the retaining block 51 have the same number of through holes 6 at the positions corresponding to the conductive strip 33. A conductive copper ring 62 connected to the wires in the junction box 4 is embedded in the through hole 6. The conductive copper ring 62 has an internal thread, and the thread connects to the conductors in the junction box 4. A grounding bolt 61 is connected; when the grounding bolt 61 is screwed in, the various air switches 13 are electrically connected through the grounding bolt 61 and the conductive strip 33; in this embodiment, the junction box 4 is installed on the outer wall of the air switch 13 and connects the core electrical components of the air switch 13, such as contacts and trip units, through internal wires, serving as a transition interface between the "internal circuit of the air switch 13" and the "external conductive structure 3"; the conversion box 5 connects the junction box 4 and the card block 51, and has through holes 6 inside; the number of through holes 6 is the same as that of the conductive strip 33; it is used to accommodate the conductive copper ring 62 and the grounding bolt 61; the function of the conversion box 5 is to convert the wire connection of the junction box 4 into the mechanical and electrical connection of the grounding bolt 61. Air connection; the locking block 51 is installed on the outside of the conversion box 5, and its shape matches the conductive groove 21; slightly smaller than the inner diameter of the conductive groove 21, it is used to insert into the conductive groove 21 to realize the positioning of the air switch 13 on the guide rail and shorten the distance between the connecting bolt 61 and the conductive strip 33; reducing contact resistance; the conductive copper ring 62 is embedded in the through hole 6, one end is welded to the wire of the junction box 4, and the other end has an internal thread; it cooperates with the connecting bolt 61. After the connecting bolt 61 is screwed into the internal thread of the conductive copper ring 62, it moves downward until it contacts the conductive strip 33. At this time, the current path is: internal components of the air switch 13, wires of the junction box 4, conductive copper ring 62, connecting bolt 61, conductive Strip 33, control circuit, multiple air switches 13 are electrically connected through conductive strip 33; in this embodiment, electrical connection is achieved through the contact between the connecting bolt 61 and the conductive strip 33, replacing the traditional wire connection method, completely solving problems such as messy wires, wiring errors, and loose terminals, and reducing construction time; the thread design of the connecting bolt 61 allows users to adjust the screwing depth, thereby controlling the contact pressure between the connecting bolt 61 and the conductive strip 33, ensuring minimal contact resistance and reducing heat generation; the design of the locking block 51 inserting into the conductive groove 21 ensures that the positions of the connecting bolt 61 and the conductive strip 33 are completely aligned, avoiding misalignment that leads to poor contact and improving installation accuracy;

[0036] like Figure 6-8As shown, a rubber strip 34 is provided between the portions of each conductive strip 33 extending out of the insulating spacer 32; the rubber strip 34 is attached to the outer surface of the insulating spacer 32 and is flush with the top of the conductive strip 33; a side sealing plate 511 is integrally formed on the back of the latch block 51 corresponding to each rubber strip 34, and each through hole 6 is provided between two side sealing plates 511. The two side sealing plates 511 and the two rubber strips 34 are relatively sealed, forming a sealed space 51 for the connection point between the connecting bolt 61 and the conductive strip 33. 2; Inside the air switch 13, a mating block 52 with the same outline as the locking block 51 and the side sealing plate 511 is installed by bolts, for simultaneous insertion into the conductive groove 21; In this embodiment, a rubber strip 34 is installed on the surface of the insulating spacer 32 between the conductive strips 33, with a height flush with the conductive strips 33, and is made of oil-resistant nitrile rubber, for filling the gap between the conductive strips 33 and the insulating spacer 32; The side sealing plate 511 is integrally formed on the back of the locking block 51, and its position corresponds to the rubber strip 34. When the locking block 51 is inserted... When inserted into the conductive groove 21, the side sealing plate 511 compresses the rubber strip 34, forming a sealed space 512. The contours of the mating block 52, the locking block 51, and the side sealing plate 511 are completely consistent. Installed inside the air switch 13, it forms an integral insertion structure with the locking block 51 and the side sealing plate 511 when inserted into the conductive groove 21, enhancing the mechanical stability of the air switch 13 on the guide rail. At the same time, it further compresses the rubber strip 34, improving the sealing effect. The design of the sealed space 512 in this embodiment can effectively prevent dust and moisture from entering the contact point, avoiding the problem of increased contact resistance caused by dust or short circuit caused by moisture. It is suitable for humid and dusty environments such as industrial workshops and basements. The elastic deformation of the rubber strip 34 can absorb the impact force when the air switch 13 is inserted, and at the same time alleviate the impact of long-term vibration on the contact bolt 61 and the conductive strip 33. The integral insertion design of the mating block 52, the locking block 51, and the side sealing plate 511 improves the fixing strength of the air switch 13 on the guide rail, avoiding the risk of the air switch 13 falling off due to accidental contact.

[0037] like Figure 6-8As shown, the conductive strip 33 has a bimetallic composite structure, including a base layer 331 and a conductive layer 332. The base layer 331 is snapped between the insulating spacers 32. The conductive layer 332 is used for the conductivity of the connecting bolt 61. The base layer 331 can be made of steel or alloy steel. The conductive layer 332 is made of copper. In this embodiment, the base layer 331 is made of steel or alloy steel, such as Q235 steel or 304 stainless steel, which has high mechanical strength and wear resistance. It is used to snap into the dovetail groove of the insulating spacer 32 to ensure the fixed stability of the conductive strip 33. The conductive layer 332 is made of copper, such as T2 copper, which has high conductivity and good oxidation resistance. It is used to connect with the connecting bolt. The 61-point contact ensures efficient current transmission. The base layer 331 and the conductive layer 332 are combined through hot rolling or explosive bonding processes to form a bimetallic structure of steel and copper, balancing mechanical strength and electrical performance. This solves the problems of "low strength of pure copper" or "poor conductivity of pure steel" in traditional conductive strips 33, and the bimetallic structure extends the service life of the conductive strip 33. The cost of steel and alloy steel is much lower than that of copper. The bimetallic structure can reduce the material cost of the conductive strip 33 while maintaining high conductivity. Moreover, when the connecting bolt 61 abuts against the conductive layer 332, the characteristics of copper will form a groove on its surface, which has a certain limiting effect on the position of the connecting bolt 61.

[0038] like Figure 9 As shown, the outer wall of the converter box 5 has the same number of sealing grooves 7 corresponding to the through hole 6. Each sealing groove 7 has a detachable sealing cover 71 inside, which is used to seal the through hole 61 after it is screwed in, preventing accidental contact from causing a safety hazard. In this embodiment, the sealing cover 71 is made of insulating material, such as ABS plastic, and is fixed in the sealing groove 7 of the converter box 5 by snap-fit ​​or threaded connection. The gap between the sealing groove 7 and the sealing cover 71 is used to seal the through hole 6, that is, the exposed head of the through hole 61. After the through hole 61 is screwed in, the head may be exposed in the converter box 5. The sealing cover 71 can completely cover it to prevent accidental contact by personnel, especially non-professionals, and also prevent dust from entering the through hole 6. The design of the insulating sealing cover 71 completely isolates the head of the through hole 61 from the outside, effectively preventing the safety hazard of "accidental contact leading to electric shock".

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The various components mentioned in this invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A modular air switch mounting structure, comprising a guide rail body (1), an air switch (13), and a snap-fit ​​structure (14), wherein the air switch (13) can be locked onto the guide rail body (1) via the snap-fit ​​structure (14); characterized in that; The guide rail body (1) includes a snap-fit ​​outer plate (2), a conductive groove (21), and a mounting part (22). The conductive groove (21) has an opening on its front side, and L-shaped snap-fit ​​outer plates (2) are integrally formed with the conductive groove (21) on the upper and lower sides of the opening for mounting the air switch (13). The upper and lower sides of the rear side of the conductive groove (21) are integrally formed with mounting parts (22). The mounting part (22) has several mounting holes (23) inside for mounting the guide rail body (1) with bolts. A conductive structure (3) is installed inside the conductive groove (21). A power connection component that cooperates with the conductive structure (3) is installed on the outer wall of the air switch (13). The power connection component is electrically connected to the electrical components inside the air switch (13). Among them, when a number of the air switches (13) are installed on the guide rail body (1), they can be directly connected to the conductive structure (3) through the power connection component to realize the mutual cooperation between the various air switches (13).

2. The modular air switch mounting structure according to claim 1, characterized in that... The conductive structure (3) includes an insulating pad (31), an insulating spacer (32), and a conductive strip (33). The conductive groove (21) is provided with an insulating pad (31) that fits the inner contour of the conductive groove (21). At least five insulating spacers (32) are integrally formed on the outer wall of the insulating pad (31). A conductive strip (33) is fixedly connected between each insulating spacer (32). The conductive strip (33) is connected to the control circuit of the application and is used to conduct electricity in conjunction with the power connection component.

3. A modular air switch mounting structure according to claim 2, characterized in that... The insulating pad (31) and insulating spacer (32) are made of resin material.

4. A modular air switch mounting structure according to claim 2, characterized in that... The insulating spacer (32) has a wedge-shaped cross section, and a dovetail groove is formed between every two insulating spacers (32). The conductive strip (33) has a wedge-shaped structure and is fixed in the dovetail groove. The height of the conductive strip (33) is higher than the height of the insulating spacer (32).

5. A modular air switch mounting structure according to claim 2, characterized in that... The power connection assembly includes a junction box (4) and a conversion box (5); the junction box (4) and the conversion box (5) are bolted to the outer wall of the air switch (13), wherein the junction box (4) is used to electrically connect to the electrical components in the air switch (13) through wires inside; the outer wall of the conversion box (5) is bolted to a locking block (51) for inserting into the conductive groove (21) when installing the air switch (13) to shorten the distance between it and the air switch (13); the conversion box (5) and the locking block (51) have the same number of through holes (6) at the positions corresponding to the conductive strip (33); the through holes (6) are embedded with conductive copper rings (62) connected to the wires in the junction box (4); the conductive copper rings (62) have internal threads inside and are threaded to the power connection bolts (61); when the power connection bolts (61) are screwed in, the air switches (13) are electrically connected through the power connection bolts (61) and the conductive strips (33).

6. A modular air switch mounting structure according to claim 2, characterized in that... A rubber strip (34) is provided between the portions of each conductive strip (33) extending out of the insulating spacer (32); the rubber strip (34) is attached to the outer surface of the insulating spacer (32) and is flush with the top of the conductive strip (33); a side sealing plate (511) is integrally formed on the back of the card block (51) corresponding to each rubber strip (34), and each through hole (6) is provided between two side sealing plates (511), the two side sealing plates (511) and the two rubber strips (34) are relatively sealed to form a sealed space (512) for the connection point between the power connection bolt (61) and the conductive strip (33).

7. A modular air switch mounting structure according to claim 6, characterized in that... The air switch (13) has a mating block (52) with the same outline as the card block (51) and the side sealing plate (511) installed inside by bolts, which is used to simultaneously insert into the conductive groove (21).

8. A modular air switch mounting structure according to claim 5, characterized in that... The conductive strip (33) is a bimetallic composite structure, including a base layer (331) and a conductive layer (332); the base layer (331) is snapped between the insulating spacers (32); the conductive layer (332) is used for the conductivity of the live bolt (61); the base layer (331) can be steel or alloy steel; the conductive layer (332) is made of copper.

9. A modular air switch mounting structure according to claim 5, characterized in that... The outer wall of the conversion box (5) is provided with the same number of sealing grooves (7) corresponding to the through hole (6). Each sealing groove (7) is detachably connected to a sealing cover (71) for sealing after the power connection bolt (61) is screwed in, so as to prevent accidental contact and potential safety hazards.

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