An electric control box with waterproof mortise and tenon sealing structure

Abstract

This utility model provides an electrical control box with a tenon-and-mortise waterproof sealing structure, including a sealing box body, a plug-in component, a U-shaped upper sealing cover, a U-shaped lower sealing cover, and a sealing ring. The U-shaped upper and lower sealing covers are joined together by a tenon-and-mortise structure to form a detachable tenon-and-mortise joint. The middle part of the detachable tenon-and-mortise joint forms a loading and unloading cavity for accommodating the plug-in component. The detachable tenon-and-mortise joint surrounds and engages the plug-in component to fix its front end. The sealing ring is clamped between the sealing box body and the detachable tenon-and-mortise joint to seal the contact surface between them. The sealing box body and the detachable tenon-and-mortise joint are detachably connected by fastening screws. This electrical control box with a tenon-and-mortise waterproof sealing structure can improve the waterproof sealing effect of the electrical control box by changing its structural shape while ensuring high ease of disassembly.

Description

Technical Field

[0001] This utility model relates to the field of electrical control boxes, specifically, to an electrical control box with a tenon-and-mortise waterproof sealing structure. Background Technology

[0002] The current market demands high waterproofing for the electrical control assemblies of pure electric air conditioners, especially the control boxes, with requirements for IP67 or higher, as well as numerous functions and high integration. Existing control boxes fall into several categories: First, they meet waterproofing requirements but have limited functionality (few connector pins). Second, they offer many functions but are not waterproof. Third, they offer many functions and meet waterproofing requirements but lack integration. Fourth, they offer many functions, meet waterproofing requirements, and have good integration, but assembly often involves completely sealing the connectors and covers together with sealant. This makes assembly cumbersome and inconvenient for subsequent repairs and replacement of damaged circuit boards. Repairs often require replacing the connectors and covers together, and connectors with more functions are typically expensive, resulting in significant cost waste.

[0003] Utility model patent CN210725668U discloses an easily detachable waterproof controller structure, including an upper shell and a lower shell. The upper shell has a connector slot, and a connector with a shape matching the slot is installed within the slot. A connector fixing frame is provided between the bottom of the connector and the top of the lower shell, and the connector is connected to the fixing frame. A waterproof ring is provided between the upper and lower shells. The connector slot is trapezoidal, and the connector includes a trapezoidal connector snap-fit ​​block disposed in the slot. A waterproof ring fitting block, also trapezoidal, is provided on the connector snap-fit ​​block. This easily detachable waterproof controller structure uses a connector assembly method, achieving waterproofing by tightly pressing the waterproof ring together with the upper and lower shells. It is also convenient for disassembly and maintenance and has a relatively simple manufacturing process. However, the disclosed structure relies solely on the waterproof ring for waterproofing, and the sealing effect needs improvement. Utility Model Content

[0004] In order to improve the waterproof sealing effect of the electrical control box by changing its structural shape while ensuring that the electrical control box has high disassembly convenience, the technical solution adopted by this utility model is: an electrical control box with a tenon and mortise waterproof sealing structure, including a sealing box body, a plug-in component, a U-shaped upper sealing cover, a U-shaped lower sealing cover and a sealing ring. The upper U-shaped sealing cover and the lower U-shaped sealing cover are joined together by a tenon and mortise structure to form a detachable tenon and mortise joint. The middle part of the detachable tenon and mortise joint forms a loading and unloading cavity for accommodating the plug-in component. The detachable tenon and mortise joint is used to surround and snap the plug-in component to fix the front end of the plug-in component. The sealing ring is sandwiched between the sealing box body and the detachable tenon joint, and is used to seal the contact surface between the sealing box body and the detachable tenon joint. The main body of the sealed box and the detachable tenon joint are detachably connected by fastening screws.

[0005] Beneficial effects: By splicing the U-shaped upper sealing cover and the U-shaped lower sealing cover together with a mortise and tenon structure to form a detachable mortise and tenon splice, the waterproof sealing effect of the electrical control box can be improved by changing the structural shape of the electrical control box while ensuring that the electrical control box has a high degree of ease of disassembly.

[0006] Based on the above, the U-shaped upper sealing cover is provided with a pair of first tenons and a pair of first tenons. The pair of first tenons are symmetrically arranged with respect to the center line of the U-shaped upper sealing cover, and the pair of first tenons are symmetrically arranged with respect to the center line of the U-shaped upper sealing cover. The U-shaped lower sealing cover is provided with a pair of second tenons and a pair of second tenons. The pair of second tenons are symmetrically arranged with respect to the center line of the U-shaped lower sealing cover, and the pair of second tenons are symmetrically arranged with respect to the center line of the U-shaped lower sealing cover. The first mortise and the second tenon are joined together to form one set of the mortise and tenon structure. The second mortise and the first tenon are joined together to form another set of the mortise and tenon structure. The two sets of mortise and tenon structures are arranged vertically and vertically.

[0007] Beneficial effects: By setting two sets of mortise and tenon structures, the number of mortise and tenon structures is increased. On the one hand, the number of mating surfaces is increased, and on the other hand, the contact area between the upper U-shaped sealing cap and the lower U-shaped sealing cap is increased, thereby improving the waterproof performance.

[0008] Based on the above, a holding block is provided on the inner side of each pair of first tenons, and the holding block cooperates with the inner side of the second tenon to hold the second tenon.

[0009] Beneficial effects: By setting up the holding block, the second tenon can be held in place, thereby improving the structural strength and stability, and thus improving the waterproof performance.

[0010] Based on the above, grooves are respectively provided on the inner side of the upper U-shaped sealing cover and the inner side of the lower U-shaped sealing cover. The grooves on the upper U-shaped sealing cover and the grooves on the lower U-shaped sealing cover can be connected to each other to form an annular groove. The annular groove is used to snap one end of the plug-in assembly.

[0011] Beneficial effects: The annular groove design can lock one end of the plug-in component in place, preventing it from shaking and increasing its stability and installation firmness.

[0012] Based on the above, the first tenon and the second mortise are also connected by fastening screws.

[0013] Based on the above, the first tenon is a semi-convex tenon with an open outer side, and the inner wall and bottom surface of the semi-convex tenon form the twentieth mating surface, the twenty-first mating surface, the eighth mating surface, the fifth mating surface, and the nineteenth mating surface, respectively. The second tenon is a semi-convex tenon that mates with the semi-convex tenon groove. The side wall and bottom surface of the semi-convex tenon form the sixteenth mating surface, the fifteenth mating surface, the fourteenth mating surface, the thirteenth mating surface, and the seventeenth mating surface, respectively. The twentieth mating surface is in contact with the thirteenth mating surface; The twenty-first mating surface is in contact with the fifteenth mating surface; The eighth mating surface is in contact with the sixteenth mating surface; The nineteenth mating surface is in contact with the seventeenth mating surface; The fifth mating surface is in contact with the fourteenth mating surface.

[0014] Beneficial effects: By designing the first mortise as a semi-convex mortise and the second tenon as a semi-convex tenon, the number of mating surfaces between the first mortise and the second tenon is increased, making the mating surfaces curved, thereby improving the waterproof performance.

[0015] Based on the above, the first tenon is an L-shaped tenon, and the upper surface and sidewall of the L-shaped tenon respectively form a first mating surface, a second mating surface, a third mating surface, a fourth mating surface, a seventh mating surface, and a sixth mating surface; The second mortise is an L-shaped mortise that mates with the L-shaped tenon. The sidewalls and top surface of the L-shaped mortise form the tenth mating surface, the eleventh mating surface, the twelfth mating surface, the ninth mating surface, the eighteenth mating surface, and the twenty-second mating surface, respectively. The first mating surface is in contact with the tenth mating surface; The sixth mating surface is in contact with the eleventh mating surface; The second mating surface is in contact with the twelfth mating surface; The third mating surface is in contact with the ninth mating surface; The fourth mating surface is in contact with the twenty-second mating surface; The seventh mating surface is in contact with the eighteenth mating surface.

[0016] Beneficial effects: By designing the second mortise as an L-shaped mortise and the first tenon as an L-shaped tenon, the number of mating surfaces between the second mortise and the first tenon is increased, making the mating surfaces curved, thereby improving the waterproof performance.

[0017] Based on the above, the edges of the upper U-shaped sealing cover and the lower U-shaped sealing cover are respectively provided with sealing ring mounting grooves, which are used to install the sealing rings.

[0018] Beneficial effect: It can use the sealing ring mounting groove to position the sealing ring and prevent the sealing ring from deviating.

[0019] Based on the above, the inner side of the sealing box body is provided with a slide for engaging the other end of the plug-in assembly, and the edge of the sealing box body is provided with a sealing ring assembly protrusion; the outer wall of the sealing box body is provided with fixing feet, and the inner side wall of the sealing box body is provided with screw holes.

[0020] Beneficial effects: The slide rail can limit the inner end of the plug-in component, increasing installation stability and firmness.

[0021] Based on the above, the plug-in assembly includes a plug and a circuit board connected to the plug. The circuit board is disposed within the cavity of the sealing box body, and the plug is snapped onto the detachable tenon and mortise joint.

[0022] This utility model has substantial features and advancements compared to existing technologies. Specifically, this utility model provides an electrical control box with a tenon-and-mortise waterproof sealing structure. By analyzing the structure of existing electrical control boxes and combining the assembly relationship between the sealing cover and the plug-in components, the sealing cover is designed as a U-shaped upper sealing cover and a U-shaped lower sealing cover structure that can be assembled and disassembled. A first tenon, a second tenon, a first mortise, and a second mortise are respectively provided on the U-shaped upper sealing cover and the U-shaped lower sealing cover to form a tenon-and-mortise mating structure. This allows dozens of mating surfaces to be formed at the contact surface between the U-shaped upper sealing cover and the U-shaped lower sealing cover, thereby increasing the sealing performance between the U-shaped upper sealing cover and the U-shaped lower sealing cover and improving the waterproof performance of the electrical control box.

[0023] Furthermore, compared to other sealed electrical control boxes that use sealant to bond the connector components, sealing cover, and circuit board together, this electrical control box is easier to disassemble. For later maintenance, the corresponding parts can be replaced as needed without involving the replacement of other related parts, thereby saving material and labor costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall assembly structure of an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0025] Figure 2 This is a schematic diagram of the plug-in circuit board assembly structure in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0026] Figure 3 This is a schematic diagram of the sealing ring structure in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0027] Figure 4 This is a schematic diagram of the assembly structure of the U-shaped lower sealing cover and the plug-in circuit board assembly in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0028] Figure 5 This is a schematic diagram of the U-shaped upper sealing cover structure in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0029] Figure 6 This is a schematic diagram of the U-shaped lower sealing cover structure in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0030] Figure 7 and Figure 8 This is a schematic diagram of the assembly structure of the U-shaped upper sealing cover and the U-shaped lower sealing cover in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0031] Figure 9 This is a schematic diagram of the main structure of the sealing box in an electrical control box with a tenon-and-mortise waterproof sealing structure provided by this utility model.

[0032] In the diagram: 1. Sealing box body; 2. U-shaped upper sealing cover; 3. Insertion assembly; 4. U-shaped lower sealing cover; 5. Fastening screw; 6. Circuit board; 7. Insertion component; 8. Sealing ring fixing hole; 9. Sealing ring; 10. Nineteenth mating surface; 11. Sealing ring mounting groove; 12. First mating surface; 13. Second mating surface; 14. Third mating surface; 15. Fourth mating surface; 16. First tenon; 17. Groove; 18. Fifth mating surface; 19. Sixth mating surface; 20. Seventh mating surface; 21. Eighth mating surface; 22. First mortise; 23. 24. Ninth mating surface; 25. Tenth mating surface; 26. Eleventh mating surface; 27. Twelfth mating surface; 28. Thirteenth mating surface; 29. ​​Fourteenth mating surface; 20. Fifteenth mating surface; 31. Sixteenth mating surface; 32. Seventeenth mating surface; 33. Eighteenth mating surface; 34. Loading / unloading cavity; 35. Slide rail; 36. Sealing ring assembly protrusion; 37. Fixing foot; 38. Second tenon; 39. Second mortise; 40. Holding block; 41. Twentieth mating surface; 42. Twenty-first mating surface; 43. Twenty-second mating surface; 44. Screw hole. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0034] Example 1 This embodiment provides an electrical control box with a tenon-and-mortise waterproof sealing structure, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, it includes a sealing box body 1, a plug-in assembly 3, a U-shaped upper sealing cover 2, a U-shaped lower sealing cover 4, and a sealing ring 9.

[0035] The U-shaped upper sealing cover 2 and the U-shaped lower sealing cover 4 are joined together by a mortise and tenon structure to form a detachable mortise and tenon joint. The middle part of the detachable mortise and tenon joint forms a loading and unloading cavity 33 to accommodate the plug-in component 3. The detachable mortise and tenon joint is used to surround and engage the plug-in component 3 to fix the front end of the plug-in component 3.

[0036] The sealing ring 9 is sandwiched between the sealing box body 1 and the detachable tenon joint, and is used to seal the contact surface between the sealing box body 1 and the detachable tenon joint.

[0037] The main body 1 of the sealed box and the detachable tenon and mortise joint are detachably connected by fastening screws 5.

[0038] Specifically, such as Figure 5 and Figure 6 As shown, the U-shaped upper sealing cover 2 is provided with a pair of first tenons 22 and a pair of first tenons 16. The pair of first tenons 22 are symmetrically arranged with respect to the center line of the U-shaped upper sealing cover 2, and the pair of first tenons 16 are symmetrically arranged with respect to the center line of the U-shaped upper sealing cover 2.

[0039] The U-shaped lower sealing cover 4 is provided with a pair of second tenons 38 and a pair of second tenons 37. The pair of second tenons 38 are symmetrically arranged with respect to the center line of the U-shaped lower sealing cover 4, and the pair of second tenons 37 are symmetrically arranged with respect to the center line of the U-shaped lower sealing cover 4.

[0040] The first mortise 22 and the second tenon 37 are joined to form a set of mortise and tenon structures. The second mortise 38 and the first tenon 16 are joined to form another set of mortise and tenon structures, and the two sets of mortise and tenon structures are arranged vertically and vertically. The first tenon 16 and the second mortise 38 are also connected by fastening screws 5.

[0041] Specifically, in this embodiment, the first tenon 22 is a semi-convex tenon with an open outer side. The inner wall and bottom surface of the semi-convex tenon form the twentieth mating surface 40, the twenty-first mating surface 41, the eighth mating surface 21, the fifth mating surface 18, and the nineteenth mating surface 10, respectively.

[0042] The second tenon 37 is a semi-convex tenon that mates with the semi-convex tenon groove. The side wall and bottom surface of the semi-convex tenon form the sixteenth mating surface 30, the fifteenth mating surface 29, the fourteenth mating surface 28, the thirteenth mating surface 27, and the seventeenth mating surface 31, respectively.

[0043] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the twentieth mating surface 40 is in contact with the thirteenth mating surface 27. The twenty-first mating surface 41 is in contact with the fifteenth mating surface 29. The eighth mating surface 21 is in contact with the sixteenth mating surface 30. The nineteenth mating surface 10 is in contact with the seventeenth mating surface 31. The fifth mating surface 18 is in contact with the fourteenth mating surface 28.

[0044] The first tenon 16 is an L-shaped tenon, and the upper surface and sidewall of the L-shaped tenon form a first mating surface 12, a second mating surface 13, a third mating surface 14, a fourth mating surface 15, a seventh mating surface 20, and a sixth mating surface 19, respectively.

[0045] The second mortise 38 is an L-shaped mortise that mates with the L-shaped tenon. The sidewalls and top surfaces of the L-shaped mortise form the tenth mating surface 24, the eleventh mating surface 25, the twelfth mating surface 26, the ninth mating surface 23, the eighteenth mating surface 32, and the twenty-second mating surface 42, respectively.

[0046] The first mating surface 12 is in contact with the tenth mating surface 24. The sixth mating surface 19 is in contact with the eleventh mating surface 25. The second mating surface 13 is in contact with the twelfth mating surface 26. The third mating surface 14 is in contact with the ninth mating surface 23. The fourth mating surface 15 is in contact with the twenty-second mating surface 42. The seventh mating surface 20 is in contact with the eighteenth mating surface 32.

[0047] Specifically, the plug-in assembly 3 includes a plug-in component 7 and a circuit board 6 connected to the plug-in component 7. The circuit board 6 is disposed within the cavity of the sealing box body 1, and the plug-in component 7 is snapped onto the detachable tenon and mortise joint component.

[0048] Example 2 This embodiment provides an electrical control box with a tenon and mortise waterproof sealing structure. The main difference from embodiment 1 is that in this embodiment, a holding block 39 is provided on the inner side of a pair of first tenons 22. The holding block 39 cooperates with the inner side of the second tenon 37 to hold the second tenon 37.

[0049] Example 3 This embodiment provides an electrical control box with a tenon-and-mortise waterproof sealing structure. The main difference from embodiment 1 is that, in this embodiment, grooves 17 are respectively provided on the inner side of the U-shaped upper sealing cover 2 and the inner side of the U-shaped lower sealing cover 4. The grooves on the U-shaped upper sealing cover and the grooves on the U-shaped lower sealing cover can be connected to each other to form an annular groove. The annular groove is used to snap one end of the plug-in component 3.

[0050] Example 4 This embodiment provides an electrical control box with a tenon and mortise waterproof sealing structure. The main difference from embodiment 1 is that in this embodiment, the edges of the U-shaped upper sealing cover 2 and the U-shaped lower sealing cover 4 are respectively provided with sealing ring mounting grooves 11, and the sealing ring mounting grooves 11 are used to install the sealing ring 9.

[0051] The inner side of the sealing box body 1 is provided with a slide 34 for engaging the other end of the plug-in assembly 3. The edge of the sealing box body 1 is provided with a sealing ring assembly protrusion 35. A fixing foot 36 is provided on the outer wall of the sealing box body 1. Screw holes 43 are respectively provided on the inner wall of the sealing box body 1, the U-shaped upper sealing cover 2, and the U-shaped lower sealing cover 4. A sealing ring 9 has a sealing ring fixing hole 8 corresponding to the screw holes 43. The sealing box body 1, the U-shaped upper sealing cover 2, the U-shaped lower sealing cover 4, and the sealing ring 9 are assembled together by fastening screws.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An electric control box with a waterproof mortise and tenon sealing structure, characterized in that: Includes the main body of the sealing box, the plug-in assembly, the upper U-shaped sealing cover, the lower U-shaped sealing cover, and the sealing ring; The upper U-shaped sealing cover and the lower U-shaped sealing cover are joined together by a tenon and mortise structure to form a detachable tenon and mortise joint. The middle part of the detachable tenon and mortise joint forms a loading and unloading cavity for accommodating the plug-in component. The detachable tenon and mortise joint is used to surround and snap the plug-in component to fix the front end of the plug-in component. The sealing ring is sandwiched between the sealing box body and the detachable tenon joint, and is used to seal the contact surface between the sealing box body and the detachable tenon joint. The main body of the sealed box and the detachable tenon joint are detachably connected by fastening screws.

2. The electric control box with waterproof mortise and tenon sealing structure according to claim 1, characterized in that: The U-shaped upper sealing cover is provided with a pair of first tenons and a pair of first tenons. The pair of first tenons are symmetrically arranged with respect to the center line of the U-shaped upper sealing cover, and the pair of first tenons are symmetrically arranged with respect to the center line of the U-shaped upper sealing cover. The U-shaped lower sealing cover is provided with a pair of second tenons and a pair of second tenons. The pair of second tenons are symmetrically arranged with respect to the center line of the U-shaped lower sealing cover, and the pair of second tenons are symmetrically arranged with respect to the center line of the U-shaped lower sealing cover. The first mortise and the second tenon are joined together to form one set of the mortise and tenon structure. The second mortise and the first tenon are joined together to form another set of the mortise and tenon structure. The two sets of mortise and tenon structures are arranged vertically and vertically.

3. The electric control box with waterproof mortise and tenon sealing structure according to claim 2, characterized in that: A holding block is provided on the inner side of each of the first tenons, and the holding block cooperates with the inner side of the second tenon to hold the second tenon.

4. The electric control box with waterproof mortise and tenon sealing structure according to claim 1 or 2 or 3, characterized in that: The inner sides of the upper U-shaped sealing cover and the lower U-shaped sealing cover are respectively provided with grooves. The grooves on the upper U-shaped sealing cover and the grooves on the lower U-shaped sealing cover can be connected to form an annular groove. The annular groove is used to snap one end of the plug-in assembly.

5. The electric control box with waterproof mortise and tenon sealing structure according to claim 2 or 3, characterized in that: The first tenon and the second mortise are also connected by fastening screws.

6. The electric control box with waterproof mortise and tenon sealing structure according to claim 2 or 3, characterized in that: The first tenon is a semi-convex tenon with an open outer side. The inner wall and bottom surface of the semi-convex tenon form the twentieth mating surface, the twenty-first mating surface, the eighth mating surface, the fifth mating surface, and the nineteenth mating surface, respectively. The second tenon is a semi-convex tenon that mates with the semi-convex tenon groove. The side wall and bottom surface of the semi-convex tenon form the sixteenth mating surface, the fifteenth mating surface, the fourteenth mating surface, the thirteenth mating surface, and the seventeenth mating surface, respectively. The twentieth mating surface is in contact with the thirteenth mating surface; The twenty-first mating surface is in contact with the fifteenth mating surface; The eighth mating surface is in contact with the sixteenth mating surface; The nineteenth mating surface is in contact with the seventeenth mating surface; The fifth mating surface is in contact with the fourteenth mating surface.

7. The electric control box with waterproof mortise and tenon sealing structure according to claim 2 or 3, characterized in that: The first tenon is an L-shaped tenon, and the upper surface and sidewall of the L-shaped tenon respectively form a first mating surface, a second mating surface, a third mating surface, a fourth mating surface, a seventh mating surface, and a sixth mating surface; The second mortise is an L-shaped mortise that mates with the L-shaped tenon. The sidewalls and top surface of the L-shaped mortise form the tenth mating surface, the eleventh mating surface, the twelfth mating surface, the ninth mating surface, the eighteenth mating surface, and the twenty-second mating surface, respectively. The first mating surface is in contact with the tenth mating surface; The sixth mating surface is in contact with the eleventh mating surface; The second mating surface is in contact with the twelfth mating surface; The third mating surface is in contact with the ninth mating surface; The fourth mating surface is in contact with the twenty-second mating surface; The seventh mating surface is in contact with the eighteenth mating surface.

8. An electrical control box with a tenon-and-mortise waterproof sealing structure according to claim 1, 2, or 3, characterized in that: The edges of the upper U-shaped sealing cover and the lower U-shaped sealing cover are respectively provided with sealing ring mounting grooves, which are used to install the sealing rings.

9. The electric control box with waterproof mortise and tenon sealing structure according to claim 8, characterized in that: The inner side of the sealing box body is provided with a slide for engaging the other end of the plug-in assembly, and the edge of the sealing box body is provided with a sealing ring assembly protrusion; the outer wall of the sealing box body is provided with fixing feet, and the inner side wall of the sealing box body is provided with screw holes.

10. The electric control box with waterproof mortise and tenon sealing structure according to claim 1 or 2 or 3, characterized in that: The plug-in assembly includes a plug and a circuit board connected to the plug. The circuit board is disposed within the cavity of the sealing box body, and the plug is snapped onto the detachable tenon and mortise joint.

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