Housing with buckle

Abstract

The utility model discloses a buckle-type housing, which comprises a front housing assembly, a rear housing assembly and a PCB assembly arranged between the front housing assembly and the rear housing assembly. The front shell assembly comprises a front shell, a female rubber core, a female terminal, a female rubber core sealing ring, a cover, a nut and a front shell sealing ring. The rear shell assembly comprises a rear shell, a light guide column and a label; the front shell and the rear shell are connected through a buckle structure, the buckle structure comprises a front shell buckle arranged on the front shell and a rear shell clamping hole formed in the rear shell, and the front shell buckle is clamped into the rear shell clamping hole to fix the front shell assembly and the rear shell assembly; the front shell sealing ring is installed in a front shell sealing groove of the front shell, and a front shell sealing rib on the front shell sealing ring is in interference fit with an inner cavity of the rear shell. Rapid disassembly and assembly are realized through the buckles and the clamping holes, the sealing rings and the positioning columns are in interference fit to ensure waterproofness and strength, the assembly error rate is reduced through the fool-proof design of the front shell and the rear shell, the tin blocking plate prevents tin overflow, the stability is enhanced through the label of the light guide column, the service life is prolonged, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of housing devices for PCB components, and more specifically, to a housing with a snap-fit ​​design. Background Technology

[0002] With the widespread application of electronic devices in complex environments such as photovoltaic power generation, higher requirements are being placed on the protection performance and service life of these devices. Taking photovoltaic inverters as an example, their communication and acquisition modules need to be exposed to high temperatures, high altitudes, and strong sunlight for extended periods. Traditional protective structures are prone to failure due to insufficient sealing or component aging. Once a failure occurs, maintenance personnel must venture into harsh environments to perform replacements, significantly increasing maintenance costs and safety risks. In existing technologies, equipment casings are mostly bolted or integrated designs, which, while providing basic protection, suffer from cumbersome disassembly and assembly, and repeated opening and closing can easily damage the structure, making it difficult to meet the maintenance needs of long-life equipment.

[0003] Current photovoltaic equipment generally adheres to the EU's 25-year service life standard, but conventional casing designs are prone to issues such as seal failure and poor terminal contact during long-term use. Some improvement solutions attempt to enhance protection by adding sealing rings or reinforcing structures, but this reduces the efficiency of module replacement. Achieving rapid assembly and disassembly while ensuring reliable casing sealing has become a key technical challenge in balancing equipment lifespan and maintenance costs. Existing technologies have not effectively resolved the contradiction between protective performance and convenient maintenance, necessitating an innovative design that balances structural strength, waterproof sealing, and rapid replacement capabilities. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a snap-fit ​​shell, which can overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0006] A snap-fit ​​housing;

[0007] The snap-fit ​​housing includes a front shell assembly, a rear shell assembly, and a PCB assembly disposed between the two. The front shell assembly includes a front shell, a female core, a female terminal, a female core sealing ring, a cover, a nut, and a front shell sealing ring. The rear shell assembly includes a rear shell, a light guide post, and a label. The front shell and rear shell are connected by a snap-fit ​​structure, which includes a front shell snap on the front shell and a rear shell snap hole on the rear shell. The front shell snap is inserted into the rear shell snap hole to fix the front shell assembly and the rear shell assembly. The front shell sealing ring is installed in the front shell sealing groove of the front shell, and the front shell sealing rib on the front shell sealing ring is interference-fitted with the inner cavity of the rear shell. The female core is positioned by a female core positioning post that cooperates with the front shell positioning groove on the front shell and is fixed in the glued groove of the front shell with glue. The PCB assembly includes a PCB board, the edges of which slide into the rear shell PCB board slots of the rear shell, and the antenna passes through the antenna hole of the rear shell and is sealed by the antenna sealing ring.

[0008] Furthermore, the female terminal is inserted into the female core insertion hole of the female core, the female terminal locking point is interference-fitted with the female core insertion hole, and the female terminal is provided with a female terminal solder baffle to prevent solder from flowing into the female terminal insertion area during soldering.

[0009] Furthermore, the inner hole of the cover is fitted over the female terminal tail tube and is limited by the inner ring of the nut and the outer ring of the female rubber core. The female rubber core is provided with a female rubber core limiting plane to prevent the nut from falling off.

[0010] Furthermore, the front shell assembly and the rear shell assembly are provided with a foolproof structure, including a front shell foolproof block and a rear shell foolproof groove, which can only be assembled when the two are aligned.

[0011] Furthermore, a front shell buckle limiting block is provided at the bottom of the front shell buckle to limit the pressing stroke and prevent the buckle from breaking.

[0012] Furthermore, the light guide post is interference-fitted with the light guide post hole of the rear shell through the light guide post reinforcing rib, and the inner hole of the label presses against the round head of the light guide post to enhance fixation.

[0013] Furthermore, the front of the rear shell is provided with a tactile reinforcing rib, and the left and right sides are provided with tactile grooves to improve the operating friction.

[0014] Furthermore, the front of the rear shell is provided with an insertion arrow to indicate the insertion direction.

[0015] The beneficial effects of this utility model are as follows: Through the optimized and improved design of the snap-fit ​​shell structure, the front shell assembly and the rear shell assembly can be quickly locked and separated by snaps and holes. The interference fit of the sealing ring and the positioning post ensures waterproof performance and structural strength, effectively improving the protection level and disassembly efficiency of the equipment in harsh environments. At the same time, the foolproof design of the front and rear shells reduces the assembly error rate, the solder baffle of the female terminal avoids the risk of solder overflow, and the double fixation of the light guide post and the label enhances the stability of the components, thereby achieving the purpose of extending the service life of the equipment and reducing maintenance costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view exploded view of a snap-fit ​​outer shell according to an embodiment of the present utility model;

[0018] Figure 2 This is a second-view exploded view of a snap-fit ​​outer shell according to an embodiment of the present utility model;

[0019] Figure 3 This is a third-view exploded view of a snap-fit ​​outer shell according to an embodiment of the present utility model;

[0020] Figure 4 This is a fourth-view exploded view of a snap-fit ​​outer shell according to an embodiment of the present utility model;

[0021] In the diagram: 1. Rear shell assembly; 2. PCB assembly; 3. Front shell assembly; 4. PVC core sealing ring; 5. Cover; 6. PVC core; 7. Nut; 8. Female terminal; 9. Front shell sealing ring; 10. Rear shell; 11. Antenna sealing ring; 12. Light guide post; 13. Label; 14. Rear shell PCB board slot; 15. Rear shell PCB board slot chamfer; 16. Rear shell antenna hole; 17. Rear shell light guide post hole; 18. Light guide post outer ring; 19. Light guide post reinforcing rib; 20. Light guide post round head; 21. Label inner hole; 22. Rear shell slot; 23. Antenna socket outer ring; 24. Rear shell anti-fooling groove; 25. Antenna sealing ring inner ring; 26. 1. PCB board edge; 27. Front shell sealing rib; 28. Front shell sealing ring inner frame; 29. ​​Front shell PCB board slot; 30. Front shell PCB board slot chamfer; 31. Front shell buckle; 32. Front shell sealing groove; 33. Front shell buckle limit block; 34. Front shell anti-fooling block; 35. Cover inner hole; 36. Nut inner ring; 37. Female terminal solder cup opening; 38. Female terminal tail tube; 39. Female terminal locking point; 40. Female terminal solder baffle; 41. Female terminal mating area; 42. Female core insertion hole; 43. Female core outer ring; 44. Female core positioning post; 45. Female core limiting plane; 46. Front shell; 47. PCB board; 48. Antenna. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0023] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0024] like Figure 1-4 As shown in the embodiment of this utility model, a snap-fit ​​housing includes a front housing assembly 3, a rear housing assembly 1, and a PCB assembly 2 disposed between the two. The front housing assembly 3 includes a front housing 46, a female core 6, a female terminal 8, a female core sealing ring 4, a cover 5, a nut 7, and a front housing sealing ring 9. The rear housing assembly 1 includes a rear housing 10, a light guide post 12, and a label 13. The front housing 46 and the rear housing 10 are connected by a snap-fit ​​structure, which includes a front housing snap-fit ​​31 disposed on the front housing 46 and a rear housing snap-fit ​​hole 22 disposed on the rear housing 10. The front housing snap-fit ​​31 snaps into the rear housing snap-fit ​​hole 22. Hole 22 is used to fix the front shell assembly 3 and the rear shell assembly 1; the front shell sealing ring 9 is installed in the front shell sealing groove 32 of the front shell 46, and the front shell sealing rib 27 on the front shell sealing ring 9 is interference-fitted with the inner cavity of the rear shell 10; the female glue core 6 is positioned by the female glue core positioning post 44 cooperating with the front shell positioning groove on the front shell 46, and is fixed in the glue application groove of the front shell 46 by glue; the PCB assembly 2 includes a PCB board 47, the edges 26 of the PCB board on both sides of which slide into the rear shell PCB board slot 14 of the rear shell 10, and the antenna 48 passes through the rear shell antenna hole 16 and is sealed by the antenna sealing ring 11.

[0025] According to an embodiment of the present utility model, in a specific embodiment, the female terminal 8 is inserted into the female core insertion hole 42 of the female core 6, the female terminal locking point 39 is interference-fitted with the female core insertion hole 42, and the female terminal 8 is provided with a female terminal solder baffle 40 to prevent solder from flowing into the female terminal mating area 41 during soldering.

[0026] According to an embodiment of the present utility model, in a specific embodiment, the inner hole 35 of the cover 5 is sleeved on the outside of the female terminal tail tube 38, and is limited by the inner ring 36 of the nut 7 and the outer ring 43 of the female rubber core. The female rubber core 6 is provided with a female rubber core limiting plane 45 to prevent the nut 7 from falling off.

[0027] According to an embodiment of the present utility model, in a specific embodiment, the front shell assembly 3 and the rear shell assembly 1 are provided with a foolproof structure, including a front shell foolproof block 34 and a rear shell foolproof groove 24, which can be assembled only when the two are aligned.

[0028] According to an embodiment of the present invention, a snap-on housing is provided at the bottom of the front housing snap 31 in a specific embodiment, which is used to limit the pressing stroke to prevent the snap from breaking.

[0029] According to an embodiment of the present invention, in a specific embodiment, the light guide post 12 is interference-fitted with the light guide post hole 17 of the rear shell through the light guide post reinforcing rib 19, and the label inner hole 21 of the label 13 presses the round head 20 of the light guide post to enhance fixation.

[0030] According to an embodiment of the present invention, a snap-on housing is provided. In a specific embodiment, the front of the back shell 10 is provided with a tactile reinforcing rib, and the left and right sides are provided with tactile grooves to improve the operating friction.

[0031] According to an embodiment of the present invention, a snap-fit ​​outer shell is provided on the front of the rear shell 10 in a specific embodiment, for indicating the insertion direction.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0033] In practical use, the snap-on housing according to this utility model includes a front shell assembly 3, a PCB assembly 2 and a rear shell assembly 1.

[0034] The front shell assembly 3 includes a female rubber core sealing ring 4, a female rubber core 6, a female terminal 8, a cover 5, a nut 7, a front shell rubber core, and a front shell sealing ring 9; the PCB assembly 2 includes a PCB board 47 and chips and electronic components; the rear shell assembly 1 includes a rear shell 10, a light guide column 12, and a label 13.

[0035] First, the sealing ring 4 is fitted onto the female core 6. The sealing ring 4 provides waterproofing after the device to which it is inserted is connected. After the sealing ring 4 is installed, the female terminal 8 is inserted into the corresponding socket of the female core 6. The female terminal 8 is designed with a female terminal locking point 39, which is in an interference fit with the female core socket 42. Under the action of the interference fit, the female terminal 8 has a certain holding force to ensure that the female terminal 8 is not easily pulled out. The female terminal 8 is designed with a female terminal solder cup 37, through which the wire is soldered to provide a connection with the socket on the PCB board 47.

[0036] To prevent solder from flowing into the mating area of ​​the female terminal 8 during soldering, a female terminal solder baffle 40 is designed on the female terminal 8. The female terminal solder baffle 40 can prevent solder from flowing downward, thereby ensuring that the mating area is not affected by poor contact caused by solder flow.

[0037] After the female terminal 8 and the female core 6 are assembled, the cover 5 is then assembled. The inner hole 35 of the cover passes through the tail tube 38 of the female terminal to complete the assembly of the cover 5. The cover 5 can further improve the verticality of the female terminal 8 after assembly. In addition, it can reduce the gap between the female terminal 8 and the female core 6, thereby ensuring that the glue does not easily leak to the head of the female core 6 after applying glue, thus avoiding the quality problem of not being able to fit together.

[0038] After the cover 5 is assembled, the inner ring 36 of the nut is inserted into the outer ring 43 of the female core. The female core limiting plane 45 on the female core 6 can prevent the nut 7 from falling off the female core 6. When the nut 7 contacts the female core limiting plane 45, the assembly of the nut 7 is completed. After the nut 7 is assembled, the entire assembled product (with the female terminal 8 and female core 6 inserted, and the cover 5 and nut 7 installed) is put into the front shell 46.

[0039] To ensure that the assembly position of the mother core 6 and the front shell 46 is not misaligned, the mother core 6 is designed with a mother core positioning post 44 and the front shell 46 is designed with a front shell positioning groove. Assembly can only be completed when the mother core positioning post 44 and the front shell positioning groove are in the same direction; otherwise, assembly cannot be completed. In addition to the foolproof function, the mother core positioning post and the front shell positioning groove also have a positioning function.

[0040] After the entire assembled product is assembled with the front shell 46, glue is injected into the glued groove of the front shell 46. After the glue cures, the semi-finished product with the female terminal 8, female glue core 6 and cover 5 inserted can become a whole with the front shell 46. Under the action of the glue adhesive force, it has good structural strength and high waterproof performance.

[0041] After the mother core 6 is assembled with the front shell 46, the front shell sealing ring 9 is inserted into the front shell 46, and the inner frame 28 of the front shell sealing ring is fitted into the front shell sealing groove 32 to complete the assembly of the front shell sealing ring 9.

[0042] The front housing sealing ring 9 is designed with a front housing sealing rib 27. The front housing sealing rib 27 is interference-fitted with the inner cavity of the rear housing 10. Because the front housing sealing ring 9 has good elasticity and toughness, it can ensure that there is no gap after assembly with the inner cavity of the rear housing 10 under the interference fit, thus ensuring good sealing performance. After the front housing sealing ring 9 is assembled, the installation of the entire front housing assembly 3 is completed.

[0043] Next, the entire PCB board assembly 2 is inserted into the rear shell 10. The PCB board assembly 2 slides into the rear shell 10 through the PCB board edges 26 on both sides of the PCB board 47 and the rear shell PCB board slots 14 on both sides of the rear shell 10. After sliding in, the antenna 48 also passes through the antenna hole 16 of the rear shell. To facilitate the installation of the PCB board assembly 2, the front shell 46 and the rear shell PCB board slot 14 are respectively designed with a front shell PCB board slot chamfer 30 and a rear shell PCB board slot chamfer 15. The front shell PCB board slot chamfer 30 and the rear shell PCB board slot chamfer 15 have good guiding function.

[0044] To ensure waterproofing at the antenna hole, an antenna sealing ring is installed on the antenna 48. The inner ring 25 of the antenna sealing ring is fitted onto the outer ring 23 of the antenna socket to complete the assembly of the antenna sealing ring. After the antenna sealing ring is assembled, it will press against the inside of the antenna hole 16 on the rear shell. Due to the good elasticity and toughness of the antenna sealing ring itself, it can also have good protective capabilities after assembly.

[0045] After the PCB assembly 2 is inserted into the back shell 10, the front shell assembly 3 is then completely installed into the back shell 10. To ensure the assembly quality of the front and back shell assemblies, the front and back shell assemblies are designed with anti-foolproof functions. The front shell is designed with a front shell anti-foolproof block 34, and the back shell 10 is designed with a back shell anti-foolproof groove 24. Assembly can only be completed when the anti-foolproof block and the anti-foolproof groove are facing the same direction; otherwise, normal assembly is not possible.

[0046] To ensure quick and easy assembly of the front and rear shells, a front shell clip 31 is designed on the front shell, and a rear shell clip hole 22 is designed on the rear shell 10. After the front and rear shells are assembled, the front shell clip 31 on the front shell will lock into the rear shell clip hole 22 on the rear shell 10. When it is necessary to remove and replace the PCB assembly 2, simply press down on the front shell clip 31 on the front shell to remove the entire PCB assembly 2. To ensure the repeated pressing strength of the front shell clip 31, a front shell clip limiting block 33 is designed under the front shell clip 31. When the front shell clip 31 is pressed down, it will touch the front shell clip limiting block 33. After touching it, the front shell clip 31 will not press down further, thereby reducing or avoiding the phenomenon of the front shell clip 31 breaking due to excessive pressing.

[0047] After the front shell assembly 3, PCB assembly 2 and rear shell assembly 1 are installed, the light guide post 12 is installed on the rear shell 10. The outer ring 18 of the light guide post passes through the light guide post hole 17 of the rear shell. The light guide post 12 is designed with a light guide post reinforcing rib 19. The light guide post reinforcing rib 19 and the light guide post hole 17 of the rear shell are in an interference fit. Under the interference fit, the light guide post reinforcing rib 19 and the light guide post hole 17 of the rear shell will generate a holding force. Under the action of the holding force, the light guide post 12 is not easy to fall off.

[0048] To further enhance the assembly strength of the light guide post 12 and the back cover 10, an adhesive label 13 is attached to the light guide post 12. The round head 20 of the light guide post passes through the inner hole 21 of the label. Because the label 13 itself has a certain adhesive force, a certain adhesive force will be formed between the label 13 and the back cover after it is attached. The inner hole 21 of the label will also press down on the round head 20 of the light guide post. Under the double protection, the light guide post 12 has a strong fixing force.

[0049] To further enhance the ergonomics of the product during use, the back cover 10 features a tactile reinforcement rib on the front and tactile grooves on the left and right sides. When holding the back cover 10 with bare hands, the friction increases when the fingers come into contact with the tactile reinforcement rib and tactile grooves, thereby improving the feel of bare-hand operation and the insertion and removal force. To reduce the difficulty of operating the product, the back cover 10 also features an insertion arrow on the front to remind users of the insertion direction.

[0050] In summary, by utilizing the above-mentioned technical solution of this utility model and through the optimized and improved design of the snap-fit ​​housing structure, the front housing assembly and the rear housing assembly can be quickly locked and separated through snaps and holes. The interference fit of the sealing ring and the positioning post ensures waterproof performance and structural strength, effectively improving the protection level and disassembly efficiency of the equipment in harsh environments. At the same time, the foolproof design of the front and rear housings reduces the assembly error rate, the solder baffle of the female terminal avoids the risk of solder overflow, and the double fixation of the light guide post and the label enhances the stability of the components, thereby achieving the purpose of extending the service life of the equipment and reducing maintenance costs.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A snap-fit ​​housing, characterized in that, The assembly includes a front shell assembly (3), a rear shell assembly (1), and a PCB assembly (2) disposed between the two. The front shell assembly (3) includes a front shell (46), a female core (6), a female terminal (8), a female core sealing ring (4), a cover (5), a nut (7), and a front shell sealing ring (9). The rear shell assembly (1) includes a rear shell (10), a light guide post (12), and a label (13). The front shell (46) and the rear shell (10) are connected by a snap-fit ​​structure, which includes a front shell snap-fit ​​(31) disposed on the front shell (46) and a rear shell snap-fit ​​hole (22) disposed on the rear shell (10). The front shell snap-fit ​​(31) is inserted into the rear shell snap-fit ​​hole (22) to fix the front shell assembly. The components (3) and the rear shell assembly (1); the front shell sealing ring (9) is installed in the front shell sealing groove (32) of the front shell (46), and the front shell sealing rib (27) on the front shell sealing ring (9) is interference-fitted with the inner cavity of the rear shell (10); the mother glue core (6) is positioned by the mother glue core positioning post (44) and the front shell positioning groove on the front shell (46), and is fixed in the glued groove of the front shell (46) by glue; the PCB assembly (2) includes a PCB board (47), the edges (26) of the PCB board on both sides slide into the rear shell PCB board slot (14) of the rear shell (10), and the antenna (48) passes through the rear shell antenna hole (16) and is sealed by the antenna sealing ring (11).

2. A snap-on case according to claim 1, wherein The female terminal (8) is inserted into the female core insertion hole (42) of the female core (6). The female terminal locking point (39) is interference-fitted with the female core insertion hole (42). The female terminal (8) is provided with a female terminal solder baffle (40) to prevent solder from flowing into the female terminal mating area (41) during soldering.

3. A snap-on case according to claim 1, wherein The inner hole (35) of the cover (5) is fitted outside the female terminal tail tube (38) and is limited by the inner ring (36) of the nut (7) and the outer ring (43) of the female rubber core. The female rubber core (6) is provided with a female rubber core limiting plane (45) to prevent the nut (7) from falling off.

4. A snap-on case according to claim 1, wherein The front shell assembly (3) and the rear shell assembly (1) are provided with anti-foolproof structures, including a front shell anti-foolproof block (34) and a rear shell anti-foolproof groove (24), which can be assembled only when the two are aligned.

5. A snap-on case according to claim 1, wherein The bottom of the front shell buckle (31) is provided with a front shell buckle limiting block (33) to limit the pressing stroke and prevent the buckle from breaking.

6. A snap-on case according to claim 1, wherein The light guide post (12) is press-fitted with the light guide post hole (17) of the back shell through the light guide post reinforcing rib (19), and the inner hole (21) of the label (13) presses the round head (20) of the light guide post to enhance fixation.

7. A snap-on case according to claim 1, wherein The front of the rear shell (10) is provided with a tactile reinforcing rib, and the left and right sides are provided with a tactile groove to improve the operating friction.

8. A snap-on case according to claim 1, wherein The front of the rear shell (10) is provided with an insertion arrow to indicate the insertion direction.

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