Modular cabinet power supply assembly structure and modular cabinet power supply

Abstract

The utility model discloses a modular cabinet power supply assembly structure and modular cabinet power supply, including power supply main body shell and function module shell, one side lateral wall of power supply main body shell is module installation area, is provided with U shape installation slot and buckle card slot at module installation area, is equipped with rectangular lug in buckle card slot, function module shell is provided with U shape limit post and cantilevered buckle at one side lateral wall corresponding module installation area, U shape limit post is adapted to be inserted into U shape installation slot, and cantilevered buckle is inserted into buckle card slot and is connected with rectangular lug clamping, the utility model not only has solved the complex, big, inconvenient operation of existing modular cabinet power supply connection structure, still has greatly promoted the connection stability through double fixed design, has further strengthened the practicality and market competitiveness of product, has the technical innovativeness and value.

Description

Technical Field

[0001] This utility model relates to power supply assembly structure, and more particularly to a modular cabinet power supply assembly structure machine and a modular cabinet power supply, which falls within the scope of electrical equipment assembly structure design. Background Technology

[0002] In the current modular cabinet power supply product field, to meet users' needs for expanded power functions (such as multi-port output, USB fast charging, overload protection, etc.), products typically adopt a "main body + module" combined design. That is, the main body provides basic power supply functions, and different functional modules can be connected to or detached from the main body as needed. However, the connection structure of existing products has the following obvious defects: 1) Complex connection structure: To achieve stable fastening between the main body and the module, existing modular products generally rely on special connectors with snap-fit ​​structures (such as customized plug-in terminals and multiple sets of snap-fit ​​components). Such connectors not only require separate mold design and production, but also require corresponding installation space to be reserved inside the main body and the module, resulting in a complicated assembly process and increased production and manufacturing costs as well as difficulty in later maintenance.

[0003] 2) High space occupancy: Existing snap-fit ​​structures are all integrated near the circuit area inside the module. In order to avoid interference with the circuit board and electronic components, the volume of the module shell needs to be increased, resulting in an overall large module size. This makes it impossible to make full use of the limited space inside the cabinet, and also affects the refinement and simplicity of the product's appearance.

[0004] 3) Poor disassembly convenience: The buckle structure of some products is hidden in the splicing gap between the module and the main body. Disassembly requires the use of tools (such as a flathead screwdriver) to pry it open, which can easily cause wear on the shell or breakage of the buckle, reducing the product's service life and user experience.

[0005] 4) Insufficient connection stability: Existing products mostly rely on a single buckle or connector for fixation, lacking auxiliary limiting structures. With long-term use or affected by cabinet vibration, modules are prone to loosening, resulting in poor conductive contact and affecting the normal use of the power supply function. In summary, the existing modular cabinet power supply connection and assembly structure can no longer meet the market demand for "low cost, small size, easy operation, and high stability". An innovative assembly structure of the main body and modules is needed to solve the above problems. Utility Model Content

[0006] To address the shortcomings of the aforementioned technologies, this utility model provides a modular cabinet power supply assembly structure and a modular cabinet power supply.

[0007] To solve the above technical problems, the technical solution adopted by this utility model is: a modular cabinet power supply assembly structure, including a power supply main body shell and a functional module shell, one side wall of the power supply main body shell is set as a module installation area, and a U-shaped installation groove and a buckle groove are provided in the module installation area, and a rectangular protrusion is provided in the buckle groove. The functional module housing is equipped with a U-shaped limiting post and a cantilever buckle on the side wall corresponding to the module installation area. The U-shaped limiting post is inserted into the U-shaped mounting groove, and the cantilever buckle is inserted into the buckle groove and engaged with the rectangular protrusion plate.

[0008] Preferably, two U-shaped mounting slots are provided, and the two U-shaped mounting slots are symmetrically distributed on the left and right sides of the module mounting area; Two U-shaped limiting posts are also provided, and the distance between the two U-shaped limiting posts is the same as the distance between the two U-shaped mounting grooves.

[0009] Preferably, the U-shaped limiting post is integrally formed with the functional module housing and has the same shape as the U-shaped mounting groove.

[0010] Preferably, the cantilever buckle has a free end and a fixed end; The fixed end is vertically connected to the outer shell of the functional module, and the center of the fixed end is flush with the center of the U-shaped limiting post; The free end extends away from the outer shell of the functional module, and an arc-shaped snap-fit ​​protrusion is formed on the inner side of the end.

[0011] Preferably, the height of the arc-shaped fastening protrusion is the same as the height of the rectangular protrusion. Furthermore, the side of the arc-shaped fastening protrusion furthest from the functional module housing is designed as an inclined contact surface, and the other side is designed as an inclined guide surface.

[0012] Preferably, the rectangular protrusion is arranged perpendicular to the inner wall of the power supply body housing.

[0013] A modular cabinet power supply includes the aforementioned modular cabinet power supply assembly structure.

[0014] Preferably, the power supply housing includes a power supply top cover and a power supply bottom cover that is fastened to the bottom of the power supply top cover, and a power supply PCB board is integrated inside the power supply housing.

[0015] Preferably, the functional module housing includes a functional module top cover and a functional module bottom cover that is fastened to the bottom of the functional module top cover, and a functional module PCB board is integrated inside the functional module housing.

[0016] Preferably, the power supply main PCB board has a female header integrated at one end near the functional module housing, and the functional module PCB board has pin headers that match the specifications of the female header.

[0017] This utility model discloses a modular cabinet power supply assembly structure, which is suitable for embedded modular cabinet power supplies that require flexible combination and convenient disassembly. It can be widely used in power supply and functional module expansion in scenarios such as household cabinets and commercial display cabinets, and has the following advantages: 1) Simplified connection structure: No need to rely on dedicated connectors. By designing an integrated snap-fit ​​structure on the module shell, the functional module and the power supply body can be directly connected and snapped together, reducing the number of parts and lowering production and assembly costs.

[0018] 2) Reduce module size: The snap-fit ​​structure and U-shaped limiting structure are both set on the outer wall of the module shell to avoid occupying the internal circuit space. The overall size of the module can be reduced while ensuring normal function, thereby improving the utilization rate of cabinet space.

[0019] 3) Improved ease of operation and transmission stability: The snap-fit ​​structure is a highly elastic single-group cantilever snap-fit, which can install and remove the module by means of the snap-fit ​​itself without the need for finger pressing or tools; the U-shaped limiting structure simplifies the operation steps, and the power and signal transmission is achieved by conventional pin headers and sockets to ensure the stability of the integrated transmission function.

[0020] 4) Optimize product appearance and stability: The integrated design of external wall single cantilever buckle + double U-shaped limit reduces splicing gaps and exposed parts, simplifies appearance lines, and improves the product's appearance; at the same time, the double fixation of buckle and limit enhances the connection between functional modules and power supply body, and avoids loosening after long-term use. Attached Figure Description

[0021] Figure 1 This is a perspective view of the modular cabinet power supply of this utility model.

[0022] Figure 2 for Figure 1 A stereoscopic view from another perspective.

[0023] Figure 3 for Figure 1 Exploded view.

[0024] Figure 4 This is a schematic diagram of the modular cabinet power supply assembly structure of this utility model.

[0025] Figure 5 for Figure 4 The main view.

[0026] Figure 6 for Figure 4A schematic diagram of the structure of the upper cover of the power supply unit.

[0027] Figure 7 This is a schematic diagram of the power supply main body shell and functional module shell before assembly.

[0028] Figure 8 This is a schematic diagram showing the assembly state of the power supply main body shell and the functional module shell of this utility model.

[0029] Figure 9 This is a cross-sectional view of the power supply main body shell and functional module shell of this utility model during assembly.

[0030] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point A in the middle.

[0031] In the diagram: 1. Power supply main body top cover; 2. Functional module top cover; 3. Power supply main body bottom shell; 4. Functional module bottom shell; 5. Power supply main body PCB board; 6. Functional module PCB board; 7. Pin header; 8. Female header; 9. Screw; 10. U-shaped limiting post; 11. Cantilever buckle; 11a. Free end; 11b. Fixed end; 12. U-shaped slot; 13. Rectangular protrusion plate. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] Example 1 This embodiment discloses a modular cabinet power supply assembly structure, which is an assembly structure for the power supply body and functional modules. The core innovation is: based on the outer shell of the power supply body, a double U-shaped mounting groove and a rectangular protruding plate at the buckle groove are set, and based on the outer shell of the functional module, a double U-shaped limiting post and a single cantilever buckle structure are designed. The double U-shaped limiting post and the double U-shaped mounting groove are adapted to be plugged in to achieve lateral fixation, and the single cantilever buckle and the rectangular protruding plate are engaged to achieve simple and quick unlocking and locking of the power supply body and functional modules.

[0034] The specific structural settings are as follows: For the power supply body casing, such as Figure 3 , Figure 4 , Figure 5 As shown, it has a rectangular box-shaped structure, with one side wall of the power supply body shell set as the module installation area; like Figure 6 As shown, within the module installation area, there are two parallel U-shaped mounting slots 12 and a snap-fit ​​slot located in the middle of the two U-shaped mounting slots. Two U-shaped mounting slots 12 are symmetrically distributed on the left and right sides of the module mounting area, with the slot openings facing the insertion direction of the functional module shell. The groove body of the U-shaped mounting slot is a U-shaped groove with a depth of about 6mm and a width that matches the diameter of the U-shaped limiting post of the functional module (error ±0.1mm). The inner wall of the U-shaped mounting slot is smooth and is used to cooperate with the U-shaped limiting post of the functional module to achieve insertion guidance and lateral limiting, preventing the module from shifting to the left or right.

[0035] A snap-fit ​​slot is provided in the middle of the two U-shaped mounting slots. A rectangular protrusion 13 (similar to a baffle structure) is provided in the snap-fit ​​slot. The rectangular protrusion 13 is perpendicular to the inner wall of the power supply body shell, with a height of 2-3mm (i.e., snap-fit ​​depth) and a width of 10-15mm. The rectangular protrusion serves as a snap-fit ​​point and is used to cooperate with the cantilever snap-fit ​​of the functional module shell to achieve lateral fixation.

[0036] The outer shell of the functional module is made of ABS engineering plastic through one-piece injection molding. The key design features are double U-shaped limiting posts and a single set of cantilever buckles on the outer wall. On one side of the outer wall of the functional module housing (the side corresponding to the power supply main body installation area), two U-shaped limiting posts are symmetrically arranged, similar to the U-shaped mounting slot 12. The distance between the two U-shaped limiting posts is exactly the same as the distance between the two U-shaped mounting slots on the power supply main body housing, ensuring accurate alignment during insertion and avoiding jamming.

[0037] The U-shaped limiting post 10 is integrally formed with the functional module shell without any additional splicing. The limiting post is a U-shaped column structure with a hollow interior. The opening faces the same direction as the module insertion direction. The diameter of the post is compatible with the width of the U-shaped mounting groove of the power supply body, and the length is consistent with the depth of the U-shaped mounting groove (about 6mm). This ensures that the post can be completely embedded in the groove after insertion, achieving stable limiting.

[0038] At the very center of the two U-shaped limiting posts 10, near the module insertion end, a single set of cantilever buckles 11 is provided. The cantilever buckles are integrally formed with the functional module shell, and their positions correspond one-to-one with the middle rectangular protrusion 13 (buckle slot) of the power supply body shell. like Figure 9 As shown, the cantilever buckle has an "L"-shaped cantilever structure, including a free end 11a and a fixed end 11b, and the whole has a high elastic deformation capability. The fixed end 11b is vertically connected to the outer wall of the functional module housing, with a length of 8-10mm and a thickness of 1.2-1.8mm (balancing strength and deformation flexibility). The center of the fixed end is flush with the center of the U-shaped limiting post to ensure balanced force during assembly. The free end 11a extends away from the functional module housing, and an arc-shaped fastening protrusion is provided on the inner side of the end (the side facing the module housing). The height of the protrusion matches the height (2-3mm) of the rectangular protrusion of the power supply body. like Figure 10 As shown, the side of the arc-shaped buckle protrusion away from the outer shell of the functional module is set as an inclined contact surface, and the other side is set as an inclined guide surface; the angle between the contact surface and the vertical plane of the rectangular protrusion is 45 degrees, which realizes the buckle fixation and easy disassembly. The guide surface cooperates with the transition surface of the rectangular protrusion to guide the buckle deformation.

[0039] The cantilever buckle is made of the same material as the functional module shell. Utilizing the high elasticity of ABS plastic, it can naturally deform towards the module shell when squeezed by external force, and quickly return to its original position after the external force is removed. Unlocking and locking can be achieved without manual pressing.

[0040] Therefore, for the modular cabinet power assembly structure disclosed in this embodiment, since the limiting posts and buckles are all set on the outer wall, the utilization rate of the internal circuit space of the module shell is greatly improved. Compared with existing products, its width can be reduced by 7-12mm and the overall volume is reduced by 8%-15%, realizing the size optimization design of the module shell.

[0041] Example 2 This embodiment discloses a modular cabinet power supply, such as Figure 1 and Figure 2 As shown, it includes two main parts: the power supply body and the functional module. The power supply body and the functional module are assembled using the assembly structure of the "power supply body shell double U-shaped mounting groove + middle rectangular convex plate" and the "functional module shell double U-shaped limiting post + single cantilever buckle" collaborative design disclosed in Implementation 1.

[0042] The power supply body casing includes a power supply body top cover 1 and a power supply body bottom cover 3 that is fastened to the bottom of the power supply body top cover 1. Furthermore, a power supply body PCB board 5 is integrated inside the power supply body casing.

[0043] The main power supply PCB board 5 provides basic power supply functions, including power supply circuits, wiring terminals, etc., and integrates a busbar 8 at one end near the functional module housing.

[0044] Place the power supply PCB board 5 into the power supply top cover 1, then fasten and fix the power supply bottom shell 3 onto the power supply top cover 1 to cover the power supply PCB board 5. Then use two screws 9 to further fix the power supply top cover and bottom shell to complete the assembly of the power supply body.

[0045] Similarly, the functional module housing includes a functional module top cover 2 and a functional module bottom cover 4 that is fastened to the bottom of the functional module top cover 2, and a functional module PCB board 6 is integrated inside the functional module housing.

[0046] The functional module PCB board 6 provides different expansion functions, and can integrate USB charging circuit, overload protection circuit, etc., and has a pin header 7 that matches the specifications of the header 8 at one end near the power supply body shell. The pin header and the female header are connected to enable power and signal transmission between the functional module and the power supply body.

[0047] Place the functional module PCB board 6 into the functional module top cover 2, and then fasten and fix the functional module bottom shell 4 onto the functional module top cover 2 to cover and press the functional module PCB board 6, thus completing the assembly of the functional module.

[0048] Finally, align the two U-shaped limiting posts 10 on the outer wall of the functional module cover 2 with the two U-shaped slots 12 on the power supply body cover 1 and push them in at a constant speed until the pin header 7 contacts the pin header 8, and the cantilever buckle 11 engages with the rectangular protrusion 13 to complete the assembly of the entire product.

[0049] Regarding the innovative design elements such as the "power supply body double U-shaped mounting groove + middle rectangular protrusion" and the "functional module double U-shaped limiting post + single cantilever buckle," Figure 7 , Figure 8 and Figure 9 As shown, the optimized assembly and disassembly process includes the following: (a) Installation process: No manual operation of the cantilever buckle or U-shaped limiting post is required. Simply align the double U-shaped limiting post of the functional module housing with the double U-shaped mounting groove of the power supply body housing and push it in at a constant speed along the groove direction. (1.1) Limiting and guiding: The U-shaped limiting post is first inserted into the U-shaped mounting groove and slides along the groove depth to realize the upper and lower limit and insertion guidance of the functional module shell, preventing displacement. At the same time, the pin header of the functional module gradually approaches the pin header of the power supply body. (1.2) Deformation of cantilever buckle and connection of pins: Continue to push in the functional module. When the arc-shaped buckle protrusion of the cantilever buckle contacts the middle rectangular protrusion of the power supply body, the guide surface of the protrusion fits with the transition surface of the protrusion. After being squeezed, the free end of the buckle naturally deforms towards the module shell. At the same time, the pins are inserted into the pin header to complete the connection of power and signal transmission. (1.3) Fastening and fixing: Continue pushing until the U-shaped limiting post is fully embedded in the U-shaped mounting groove (depth of about 6mm). At this time, the arc-shaped fastening protrusion of the buckle passes over the rectangular protrusion, the external squeezing force disappears, the buckle automatically returns to its original position, and the inclined surface of the buckle protrusion and the vertical surface of the rectangular protrusion achieve fastening and fixing. No additional operation is required in the whole process.

[0050] (II) Disassembly process: No need for finger pressing or tool assistance; simply pull the functional module outwards. (2.1) Cantilever buckle unlocking and pin separation: Under the action of tension, the arc-shaped buckle protrusion is squeezed by the vertical surface of the rectangular convex groove, which causes the free end to deform naturally towards the outer shell of the functional module, and the arc-shaped buckle protrusion is freed from the constraint of the rectangular convex plate; at the same time, the pin is pulled out from the pin nut, and the transmission is disconnected. (2.2) Limit exit: Continue to pull the function module, and the U-shaped limit post slides out along the direction of the U-shaped mounting groove until it is completely separated from the U-shaped mounting groove body; (2.3) Functional module removal: After the cantilever buckle and the U-shaped limiting post are both detached from the power supply body, the functional module can be removed as a whole, achieving disassembly without intervention.

[0051] In summary, this new design, through the coordinated design of "double U-shaped mounting grooves + central rectangular protrusions" for the power supply body and "double U-shaped limiting posts + single cantilever buckles" for the functional modules, combined with conventional pin headers and sockets to achieve basic transmission, has the following significant advantages compared to existing technologies: (1) The structure is simpler and the cost is further reduced: No special connectors are required. Connection and transmission are achieved through integrated limit posts, buckles and conventional pin headers and sockets. The number of parts is reduced by more than 15% compared with existing products, and the maintenance risk caused by multiple component failures is reduced.

[0052] (2) Smaller size and stronger space adaptability: The compact layout of the outer wall avoids occupying the internal circuit space. The overall size of the module is 10%-20% smaller than that of existing products, which can be adapted to smaller cabinet embedded spaces (such as installation positions with a width of less than 60mm), especially suitable for customized small cabinet scenarios.

[0053] (3) Improved ease of operation and stability of use: Ease of operation: Installation and disassembly only require one action of "pushing in / pulling", without tools or pressing, reducing the operation time to 3 / 5 of existing products, and can be easily operated by non-professionals; Connection stability: Double U-shaped limiting posts achieve vertical and horizontal limiting, while the middle buckle achieves horizontal fixation. The double constraint can effectively resist cabinet vibration or accidental collision, reduce the module loosening rate, and extend the product's service life.

[0054] (4) Simpler appearance and upgraded user experience: The appearance features a double U-shaped limiting column, a single cantilever buckle and an integrated design of the functional module shell. The pin header and socket are hidden in the installation area with no exposed splicing gaps. The product has smooth lines and conforms to the minimalist aesthetics of modern kitchen cabinets and appliances. In summary, this new design not only solves the problems of complex, bulky, and inconvenient operation of existing modular cabinet power connection structures, but also significantly improves connection stability through a dual-fixing design, further enhancing the product's practicality and market competitiveness, demonstrating technological innovation and value.

[0055] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A modular cabinet power supply assembly structure, comprising a power supply main body shell and a functional module shell, characterized in that: One side wall of the power supply body shell is set as a module installation area. A U-shaped installation groove (12) and a buckle groove are provided in the module installation area. A rectangular protrusion (13) is provided in the buckle groove. The functional module housing is provided with a U-shaped limiting post (10) and a cantilever buckle (11) on the side wall corresponding to the module installation area. The U-shaped limiting post (10) is adapted to be inserted into the U-shaped mounting groove (12), and the cantilever buckle (11) is inserted into the buckle groove and engaged with the rectangular protrusion (13).

2. The modular cabinet power supply assembly structure according to claim 1, characterized in that: Two U-shaped mounting slots (12) are provided, and the two U-shaped mounting slots (12) are symmetrically distributed on the left and right sides of the module mounting area; Two U-shaped limiting posts (10) are also provided, and the distance between the two U-shaped limiting posts (10) is the same as the distance between the two U-shaped mounting grooves (12).

3. The modular cabinet power supply assembly structure according to claim 2, characterized in that: The U-shaped limiting post (10) is integrally formed with the outer shell of the functional module and has the same shape as the U-shaped mounting groove (12).

4. The modular cabinet power supply assembly structure according to claim 3, characterized in that: The cantilever buckle (11) has a free end (11a) and a fixed end (11b). The fixed end (11b) is vertically connected to the outer shell of the functional module, and the center of the fixed end (11b) is flush with the center of the U-shaped limiting post (10); The free end (11a) extends away from the outer shell of the functional module, and an arc-shaped fastening protrusion is formed on the inner side of the end.

5. The modular cabinet power supply assembly structure according to claim 4, characterized in that: The height of the arc-shaped fastening protrusion is the same as the height of the rectangular protrusion (13); Furthermore, the side of the arc-shaped fastening protrusion furthest from the outer shell of the functional module is set as an inclined contact surface, and the other side is set as an inclined guide surface.

6. The modular cabinet power supply assembly structure according to claim 5, characterized in that: The rectangular protrusion (13) is set perpendicular to the inner wall of the power supply body shell.

7. A modular cabinet power supply, characterized in that: It includes the modular cabinet power supply assembly structure as described in any one of claims 1-6.

8. The modular cabinet power supply according to claim 7, characterized in that: The power supply body housing includes a power supply body top cover (1) and a power supply body bottom cover (3) that is fastened to the bottom of the power supply body top cover (1). A power supply body PCB board (5) is integrated inside the power supply body housing.

9. The modular cabinet power supply according to claim 8, characterized in that: The functional module housing includes a functional module top cover (2) and a functional module bottom cover (4) that is fastened to the bottom of the functional module top cover (2). A functional module PCB board (6) is integrated inside the functional module housing.

10. The modular cabinet power supply according to claim 9, characterized in that: The power supply main PCB board (5) has a header (8) integrated at one end near the functional module shell, and the functional module PCB board (6) has a header (7) that matches the specifications of the header (8).

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