Modularized waterproof bus duct

Abstract

The invention discloses a modularized waterproof bus duct which comprises a bus duct body and further comprises a sealing plate arranged on the side face of the bus duct body and used for being connected with other cables. The connecting mechanism is arranged on the outer side of the sealing plate and is used for connecting and fixing the bus duct; and the waterproof top plate is arranged at the top of the bus duct, the width of the waterproof top plate is greater than that of the bus duct, and the waterproof top plate is used for waterproofing the bus duct. According to the modularized waterproof bus duct, the sealing plates are arranged, so that the modularized waterproof bus duct can be conveniently butted with other cables, and meanwhile, the sealing performance of the side surfaces of the bus duct is improved; the connection and fixation of the bus duct can be quickly completed by means of the connection mechanism, the stability after installation is ensured, and the subsequent loosening risk is reduced; the waterproof top plate whose width is larger than that of the bus duct can effectively enlarge the top waterproof coverage range and comprehensively block water vapor penetration.

Description

Technical Field

[0001] This invention relates to the field of busbar technology, specifically a modular waterproof busbar. Background Technology

[0002] Busbar trunking, as a key piece of equipment in power transmission systems, is widely used in industrial plants, high-rise buildings, and other locations. Its installation stability and waterproof performance directly affect the safety and reliability of power transmission. In practical applications, existing busbar trunking systems lack dedicated sealing structures for the side cable connections, often relying on simple cover plates. This not only makes cable connection operations cumbersome but also results in poor sealing after connection, making it prone to moisture infiltration. Furthermore, the busbar trunking system as a whole lacks convenient and stable connection and fixing mechanisms, leading to difficulties in installation and positioning. During subsequent use, it is susceptible to loosening due to vibration and other factors, affecting the stability of power transmission.

[0003] Furthermore, the existing top waterproof structure design of busbar trunking is unreasonable. The width of the waterproof components is usually the same as that of the busbar trunking body, which cannot effectively shield the side connection parts of the busbar trunking. Rainwater can easily flow along the side of the busbar trunking to the connection gaps and seep into the interior. Moreover, the traditional waterproof structure does not consider the compatibility with the connection components, which can easily lead to interference between the waterproof components and the fixed structure, further weakening the waterproof effect. In severe cases, it can cause short circuits in the internal circuit of the busbar trunking, causing safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a modular waterproof busbar trunking to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular waterproof busbar trunking, comprising a busbar trunking, and further comprising: A sealing plate, which is located on the side of the busbar trunking, is used to connect the remaining cables; A connecting mechanism, located on the outside of the sealing plate, is used to connect and fix the busbar trunking. A waterproof top plate is installed on top of the busbar trunking, and the width of the waterproof top plate is greater than the width of the busbar trunking, for waterproofing the busbar trunking.

[0006] Preferably, a connecting plate is provided on the outer side of the busbar trunking, and a connector is provided at the end of the connecting plate; The sealing plate has grooves at both the top and bottom ends, and the size and shape of the grooves match the connector.

[0007] Preferably, the inner wall of the sealing plate is provided with a buckle, and the side of the buckle near the sealing plate is provided with a support arm for connecting the sealing plate and the buckle.

[0008] Preferably, the connecting end of the connecting mechanism is provided with a sliding groove, and a tensile spring is provided in the sliding groove, with one end of the tensile spring connected to a connecting member.

[0009] Preferably, the connector is inserted into the slide groove, and the slide groove limits the position of the connector.

[0010] Preferably, the waterproof top plate is provided with an adapter plate, which is used to ensure that drainage is blocked due to the connection mechanism.

[0011] Preferably, the bottom of the waterproof roof plate is provided with a support surface, and a connecting rod is provided on the support surface; The connecting plate has a through hole, through which the connecting rod passes.

[0012] Preferably, the connecting rod has a locking hole, and a connecting rod is connected to the locking hole. The connecting rod is used to lock the connecting rod.

[0013] Preferably, a limiting block is connected to the end of the plug rod, and the limiting block is used to limit the position of the plug rod.

[0014] Preferably, the waterproof top plate and the adapter plate are provided with snap-fit ​​grooves, which are used to accommodate the connecting mechanism.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This modular waterproof busbar trunking, by setting a sealing plate, can easily connect with other cables, while improving the sealing performance of the side of the busbar trunking; the connection mechanism can quickly complete the connection and fixation of the busbar trunking, ensuring the stability after installation and reducing the risk of loosening later; with a waterproof top plate wider than the busbar trunking, the top waterproof coverage area can be effectively expanded, completely blocking water vapor infiltration, while avoiding interference between the waterproof structure and connecting parts, significantly improving the overall waterproof effect, thereby ensuring the safety and reliability of power transmission in the busbar trunking, and effectively solving the problems of inconvenient cable connection, weak fixation and poor waterproof performance of existing busbar trunking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 3 This is an exploded structural diagram of the connecting mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram showing the separation of the waterproof roof plate and the busbar trough of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the bottom structure of the waterproof roof plate of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram at point D.

[0017] In the diagram: 1. Busbar trunking; 11. Connecting plate; 12. Connector; 2. Sealing plate; 21. Buckle; 3. Connecting mechanism; 31. Slide groove; 32. Connector; 33. Tensile spring; 4. Waterproof top plate; 41. Adapter plate; 42. Support surface; 43. Connecting rod; 431. Locking hole; 44. Plug-in rod; 441. Limiting block; 45. Through hole; 46. Snap-in groove. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 The present invention provides a technical solution: a modular waterproof busbar trunking, including a busbar trunking 1, and further comprising: The sealing plate 2 is located on the side of the busbar trough 1 and is used to connect other cables. The outer side of the busbar trough 1 is provided with a connecting plate 11. The sealing plate 2 is also used to protect the side of the busbar trough 1 from rain. The end of the connecting plate 11 is provided with a connector 12. The connector 12 is used to allow the sealing plate 2 to slide and insert into the outer side of the busbar trough 1. The upper and lower ends of the sealing plate 2 are provided with grooves, and the size and shape of the grooves match the connector 12. This ensures that the connector 12 can slide and insert into the sealing plate 2. After the connection is stable, water will not enter the interior of the busbar trough 1. The inner wall of the sealing plate 2 is provided with a buckle 21. The buckle 21 is used to clamp the cables and ensure the stable connection of other cables. The side of the buckle 21 near the sealing plate 2 is provided with a support arm for connecting the sealing plate 2 and the buckle 21.

[0020] During installation, align the grooves at the top and bottom of the sealing plate 2 with the connector 12 at the end of the connecting plate 11 on the outside of the busbar trough 1. The sealing plate 2 is then slidably inserted into the outside of the busbar trough 1 through the cooperation of the grooves and the connector 12. After the insertion is stable, the sealing plate 2 provides rain protection to the side of the busbar trough 1 and is also used to connect other cables. During the cable connection process, the buckle 21 on the inner wall of the sealing plate 2 engages the cables. The sealing plate 2 and the buckle 21 are connected by the support arm.

[0021] The connecting mechanism 3, located on the outside of the sealing plate 2, is used to connect and fix the busbar trough 1. The connecting end of the connecting mechanism 3 has a groove 31, which connects to the connector 32 and the tension spring 33, and also limits the connection of the connector 32. The connector 32 can be limited within the groove 31. The tension spring 33 is located within the groove 31 and pulls the connector 32, thus limiting its position. One end of the tension spring 33 is connected to the connector 32, which is inserted into the groove 31. The groove 31 limits the connection of the connector 32, allowing it to be pulled and engaged according to the shape of the externally connected component during use. The tension spring 33 then pulls the connector 32, stabilizing the connection to the busbar trough 1.

[0022] The connecting mechanism 3 is located on the outside of the sealing plate 2 and is used to connect and fix the busbar trough 1. The sliding groove 31 at the connecting end of the connecting mechanism 3 is connected to the connector 32 and the tensile spring 33 respectively, and limits the connector 32. One end of the tensile spring 33 is connected to the connector 32. The connector 32 is inserted into the sliding groove 31. In use, the connector 32 is pulled and locked according to the shape of the external connected component. At this time, the tensile spring 33 pulls the connector 32 to complete the limiting of the connector 32, thereby stabilizing the connection of the busbar trough 1.

[0023] The grooves at the top and bottom ends of the sealing plate 2 are aligned with the connector 12 at the end of the connecting plate 11 on the outside of the busbar trough 1, so that the sealing plate 2 is slidably inserted into the outside of the busbar trough 1 through the cooperation of the groove and the connector 12. The buckle 21 of the sealing plate 2 and the inner wall are connected by the support arm. When the cable is connected, the buckle 21 clamps the cable. The connecting mechanism 3 located on the outside of the sealing plate 2 is connected to the connector 32 and the tensile spring 33 through the sliding groove 31 at the connecting end. The connector 32 is inserted into the sliding groove 31, and the sliding groove 31 limits the connector 32. When in use, the connector 32 is pulled and the external component is clamped. The tensile spring 33 pulls the connector 32 to achieve the limit, thereby stabilizing the connection of the busbar trough 1.

[0024] A waterproof top plate 4 is installed on top of the busbar trough 1. The waterproof top plate 4 blocks the top of the busbar trough 1, preventing dripping water from directly entering the interior of the busbar trough 1 from the top and causing a short circuit. The width of the waterproof top plate 4 is greater than the width of the busbar trough 1, effectively waterproofing the entire top area of ​​the busbar trough 1. An adapter plate 41 is provided on the waterproof top plate 4. Since the connecting mechanism 3 and the sealing plate 2 are connected, the adapter plate 41 is provided to prevent the connecting mechanism 3 from blocking the flow of water droplets. This mitigates the diversion caused by the chute 31 and ensures that drainage is not blocked by the connecting mechanism 3. A support surface 42 is provided at the bottom of the waterproof top plate 4. The support surface 42, in conjunction with the connecting plate 11, supports the waterproof top plate 4, thus completing the initial connection. The support surface 42 also helps the connecting plate 11 to position the connecting rod 43, ensuring that it can be inserted into the through hole 45. A connecting rod 43 is provided on the support surface 42, and a through hole 45 is provided on the connecting plate 11. The stabilizing connecting rod 43 is inserted into the through hole 45. The connecting rod 43 passes through the through hole 45. A locking hole 431 is provided on the connecting rod 43. A plug-in rod 44 is connected in the locking hole 431. The plug-in rod 44 is used to lock the connecting rod 43. A limit block 441 is connected to the end of the plug-in rod 44. When the plug-in rod 44 is inserted into the locking hole 431, it can prevent the connecting rod 43 from falling off. The limit block 441 is used to limit the connecting rod 43. A snap-fit ​​groove 46 is provided on the waterproof top plate 4 and the adapter plate 41. The snap-fit ​​groove 46 is used to accommodate the connecting mechanism 3.

[0025] A waterproof top plate 4 is installed on top of the busbar trough 1 to prevent water droplets from entering the busbar trough 1. The width of the waterproof top plate 4 is greater than the width of the busbar trough 1 to achieve waterproofing of the busbar trough 1. The adapter plate 41 on the waterproof top plate 4 alleviates the obstruction of drainage by the connecting mechanism 3. The snap-fit ​​groove 46 on the waterproof top plate 4 and the adapter plate 41 accommodates the connecting mechanism 3. The support surface 42 at the bottom of the waterproof top plate 4 cooperates with the connecting plate 11 to achieve support and positioning, ensuring that the connecting rod 43 on the support surface 42 is inserted into the through hole 45 of the connecting plate 11. After the connecting rod 43 passes through the through hole 45, the locking hole 431 on the connecting rod 43 connects to the plug rod 44. The plug rod 44 locks the connecting rod 43. The limiting block 441 at the end of the plug rod 44 prevents the connecting rod 43 from disengaging, thereby limiting the connection rod 43.

[0026] The grooves at the top and bottom ends of the sealing plate 2 are aligned with the connector 12 at the end of the connecting plate 11 on the outside of the busbar trough 1. The sealing plate 2 is slidably inserted into the outside of the busbar trough 1 through the cooperation of the grooves and the connector 12. The buckle 21 of the sealing plate 2 and the inner wall are connected by a support arm. When the cable is connected, the buckle 21 clamps the cable. The connecting mechanism 3 located on the outside of the sealing plate 2 is connected to the connector 32 and the tensile spring 33 through the sliding groove 31 at the connecting end. The connector 32 is inserted into the sliding groove 31, and the sliding groove 31 limits the connector 32. When in use, the connector 32 is pulled and clamped to the external component. The tensile spring 33 pulls the connector 32 to lock the external component. The current limit position stabilizes the connection of the busbar trough 1; the waterproof top plate 4 is set on the top of the busbar trough 1, and the snap-fit ​​groove 46 on the waterproof top plate 4 and the adapter plate 41 accommodates the connecting mechanism 3. The adapter plate 41 alleviates the situation where the connecting mechanism 3 blocks the drainage. The support surface 42 at the bottom of the waterproof top plate 4 cooperates with the connecting plate 11 to achieve support and positioning, so that the connecting rod 43 on the support surface 42 passes through the through hole 45 of the connecting plate 11. The locking hole 431 on the connecting rod 43 connects to the plug rod 44. The plug rod 44 locks the connecting rod 43. The limiting block 441 at the end of the plug rod 44 prevents the connecting rod 43 from disengaging and achieves the limit position.

[0027] In embodiment 1, a sealing plate 2 is located on the side of the busbar trough 1 for connecting other cables. A connecting plate 11 is provided on the outer side of the busbar trough 1, and the sealing plate 2 also provides rain protection for the side of the busbar trough 1. A connector 12 is installed at the end of the connecting plate 11. The connector 12 is used for the sealing plate 2 to slide and insert onto the outer side of the busbar trough 1. The upper and lower ends of the sealing plate 2 have grooves, and the size and shape of the grooves are adapted to the connector 12 to ensure that the connector 12 and the sealing plate 2 can slide and insert stably. After insertion, water flow can be prevented from entering the interior of the busbar trough 1. A buckle 21 is provided on the inner wall of the sealing plate 2. The buckle 21 is used to clamp the cables to ensure the stability of the connection of other cables. A support arm is provided on the side of the buckle 21 near the sealing plate 2. The support arm is used to connect the sealing plate 2 and the buckle 21.

[0028] During installation, align the grooves at both ends of the sealing plate 2 with the connector 12 at the end of the connecting plate 11 on the outside of the busbar trough 1, allowing the sealing plate 2 to slide into the outside of the busbar trough 1 through the cooperation of the grooves and the connector 12. After stable insertion, the sealing plate 2 can provide rain protection for the side of the busbar trough 1 and is also used to connect other cables. During cable connection, the clips 21 on the inner wall of the sealing plate 2 engage the cables, and the sealing plate 2 and the clips 21 are connected by the support arm.

[0029] In embodiment two, the connecting mechanism 3 is located on the outside of the sealing plate 2 and is used to connect and fix the busbar trough 1. The connecting end of the connecting mechanism 3 has a sliding groove 31, which connects the connector 32 and the tensile spring 33, and also has a limiting function for the connector 32, allowing the connector 32 to be limited within the sliding groove 31. The tensile spring 33 is installed inside the sliding groove 31, and is used to pull the connector 32, thereby limiting its position. One end of the tensile spring 33 is connected to the connector 32, which is inserted into the sliding groove 31 and limited by the sliding groove 31. In use, the connector 32 can be pulled and engaged according to the shape of the external connected component. At this time, the tensile spring 33 will exert a pulling force on the connector 32, thereby achieving a stable connection of the busbar trough 1.

[0030] The connecting mechanism 3 is located on the outside of the sealing plate 2, and its core function is to connect and fix the busbar trough 1. The sliding groove 31 at the connecting end of the connecting mechanism 3 is connected to the connector 32 and the tensile spring 33 respectively, and can limit the connection of the connector 32; one end of the tensile spring 33 is connected to the connector 32, and the connector 32 is inserted into the sliding groove 31. During use, the connector 32 can be pulled according to the shape of the external connected component to complete the locking. At this time, the tensile spring 33 will pull the connector 32 to realize the limiting of the connector 32, and ultimately ensure the stability of the busbar trough 1 connection.

[0031] In embodiment three, a waterproof top plate 4 is installed on top of the busbar trough 1 to block the top area of ​​the busbar trough 1, preventing dripping water droplets from directly entering the busbar trough 1 from the top and causing a short circuit. The width of the waterproof top plate 4 is greater than the width of the busbar trough 1, covering the entire top area of ​​the busbar trough 1 and achieving a waterproof effect. An adapter plate 41 is provided on the waterproof top plate 4. Since the connecting mechanism 3 is connected to the sealing plate 2, the adapter plate 41 is specially provided to avoid the connecting mechanism 3 blocking the flow of water droplets, thereby alleviating the diversion problem caused by the sliding groove 31 blocking water droplets and ensuring that the presence of the connecting mechanism 3 does not affect drainage.

[0032] The bottom of the waterproof roof plate 4 is provided with a support surface 42, which can cooperate with the connecting plate 11 to support the waterproof roof plate 4 and complete the initial connection. At the same time, the support surface 42 can also cooperate with the connecting plate 11 to achieve positioning, ensuring that the connecting rod 43 on the support surface 42 can be accurately inserted into the through hole 45 opened in the connecting plate 11. After the connecting rod 43 passes through the through hole 45, a plug rod 44 is connected in the locking hole 431 opened therein, which is used to lock the connecting rod 43. The end of the plug rod 44 is connected to a limit block 441, which can prevent the connecting rod 43 from falling off when the plug rod 44 is inserted into the locking hole 431, and the limit block 441 is used to limit the connecting rod 43. In addition, the waterproof roof plate 4 and the adapter plate 41 are provided with a snap-fit ​​groove 46, which is used to accommodate the connecting mechanism 3.

[0033] A waterproof top plate 4 is installed on top of the busbar trough 1. Its core function is to prevent water droplets from entering the busbar trough 1. Its width is greater than the width of the busbar trough 1, which can effectively waterproof the busbar trough 1. The adapter plate 41 on the waterproof top plate 4 can alleviate the obstruction of drainage by the connecting mechanism 3. The snap-fit ​​groove 46 on the waterproof top plate 4 and the adapter plate 41 is used to accommodate the connecting mechanism 3. The support surface 42 at the bottom of the waterproof top plate 4 cooperates with the connecting plate 11 to provide support and positioning, ensuring that the connecting rod 43 on the support surface 42 is accurately inserted into the through hole 45 of the connecting plate 11. After the connecting rod 43 passes through the through hole 45, it is connected to the plug rod 44 through the locking hole 431 on it. The plug rod 44 locks the connecting rod 43. The limiting block 441 at the end of the plug rod 44 can prevent the connecting rod 43 from disengaging, thereby limiting the connection rod 43.

[0034] When using the modular waterproof busbar trunking, align the grooves at the top and bottom of the sealing plate 2 with the connector 12 at the end of the connecting plate 11 on the outside of the busbar trunking 1. The sealing plate 2 is then slidably inserted into the outside of the busbar trunking 1 through the cooperation of the grooves and connector 12. The buckle 21 of the sealing plate 2 and the inner wall is connected by a support arm. When connecting cables, the buckle 21 engages the cables. The connecting mechanism 3 located on the outside of the sealing plate 2 connects the connector 32 and the tensile spring 33 respectively through the sliding groove 31 at the connecting end. The connector 32 is inserted into the sliding groove 31, which limits the position of the connector 32. During use, the connector 32 is pulled to engage the external components, and the tensile spring... 33 Pulling the connector 32 achieves the limit, thereby stabilizing the connection of the busbar trough 1; the waterproof top plate 4 is set on the top of the busbar trough 1, and the snap-fit ​​groove 46 on the adapter plate 41 accommodates the connecting mechanism 3. The adapter plate 41 alleviates the situation where the connecting mechanism 3 blocks the drainage. The support surface 42 at the bottom of the waterproof top plate 4 cooperates with the connecting plate 11 to achieve support and positioning, so that the connecting rod 43 on the support surface 42 passes through the through hole 45 of the connecting plate 11. The locking hole 431 on the connecting rod 43 connects to the plug rod 44. The plug rod 44 locks the connecting rod 43. The limiting block 441 at the end of the plug rod 44 prevents the connecting rod 43 from disengaging and achieves the limit.

[0035] A waterproof top plate 4 is installed on top of the busbar trough 1 to prevent water droplets from entering the busbar trough 1. The width of the waterproof top plate 4 is greater than the width of the busbar trough 1 to achieve waterproofing of the busbar trough 1. The adapter plate 41 on the waterproof top plate 4 alleviates the obstruction of drainage by the connecting mechanism 3. The snap-fit ​​groove 46 on the waterproof top plate 4 and the adapter plate 41 accommodates the connecting mechanism 3. The support surface 42 at the bottom of the waterproof top plate 4 cooperates with the connecting plate 11 to achieve support and positioning, ensuring that the connecting rod 43 on the support surface 42 is inserted into the through hole 45 of the connecting plate 11. After the connecting rod 43 passes through the through hole 45, the locking hole 431 on the connecting rod 43 connects to the plug rod 44. The plug rod 44 locks the connecting rod 43. The limiting block 441 at the end of the plug rod 44 prevents the connecting rod 43 from disengaging, thereby limiting the connection rod 43.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular waterproof busbar trunking system, comprising a busbar trunking system (1), characterized in that, Also includes: A sealing plate (2) is provided on the side of the busbar trough (1) for connecting the remaining cables; A connecting mechanism (3) is provided on the outside of the sealing plate (2) for connecting and fixing the busbar (1); A waterproof top plate (4) is provided on the top of the busbar trough (1). The width of the waterproof top plate (4) is greater than the width of the busbar trough (1) and is used to waterproof the busbar trough (1).

2. The modular waterproof busbar trunking according to claim 1, characterized in that: The busbar trunking (1) is provided with a connecting plate (11) on its outer side, and the end of the connecting plate (11) is provided with a connector (12). The sealing plate (2) has grooves at both the upper and lower ends, and the size and shape of the grooves match the connector (12).

3. The modular waterproof busbar trunking according to claim 2, characterized in that: The inner wall of the sealing plate (2) is provided with a buckle (21), and the buckle (21) is provided with a support arm on the side near the sealing plate (2) for connecting the sealing plate (2) and the buckle (21).

4. A modular waterproof busbar trunking according to claim 1 or 3, characterized in that: The connecting end of the connecting mechanism (3) is provided with a sliding groove (31), and a tensile spring (33) is provided in the sliding groove (31). One end of the tensile spring (33) is connected to a connector (32).

5. A modular waterproof busbar trunking according to claim 4, characterized in that: The connector (32) is inserted into the slide (31), and the slide (31) limits the position of the connector (32).

6. A modular waterproof busbar trunking according to claim 1, characterized in that: The waterproof top plate (4) is provided with an adapter plate (41) which is used to ensure that drainage is blocked due to the connection mechanism (3).

7. A modular waterproof busbar trunking according to claim 2, characterized in that: The bottom of the waterproof top plate (4) is provided with a support surface (42), and a connecting rod (43) is provided on the support surface (42). The connecting plate (11) has a through hole (45), and the connecting rod (43) passes through the through hole (45).

8. A modular waterproof busbar trunking according to claim 1 or 7, characterized in that: The connecting rod (43) has a locking hole (431) and a connecting rod (44) is connected in the locking hole (431). The connecting rod (44) is used to lock the connecting rod (43).

9. A modular waterproof busbar trunking according to claim 8, characterized in that: The end of the plug rod (44) is connected to a limiting block (441), which is used to limit the plug rod (44).

10. A modular waterproof busbar trunking according to claim 6, characterized in that: The waterproof top plate (4) and the adapter plate (41) are provided with snap-fit ​​grooves (46), which are used to accommodate the connecting mechanism (3).

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