Modular PCB enclosure

Abstract

The utility model discloses a modularization PCB shell belongs to PCB shell technical field, including the casing and set up the apron at the top of casing, the four legs of apron bottom all are fixedly connected with the fixed plate, and the bottom of fixed plate is provided with the sliding slot, and the sliding slot is fixedly connected with the limit rod, and the both ends outer wall of limit rod all movably sleeve and connect with the return spring, and the both ends outer wall of limit rod all movably sleeve and connect with the sliding block, and the bottom fixed connection of sliding block has the support column, and the bottom fixed connection of support column has the clamping ring, and the top four corners of casing all are provided with the recess, and the inner wall of recess is fixedly connected with the clamping post. This modularization PCB shell, through the reset spring, the clamping ring and the clamping of card column structure, realize apron and casing's quick disassembly, when maintaining, need not complicated tool, directly separate clamping ring and card column can open the shell, solved the traditional shell disassembly difficult problem, shortened the maintenance time and reduced the cost, and the guide pillar and the installation hole ensure that apron is accurate, and improve the dismounting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of PCB housing technology, specifically a modular PCB housing. Background Technology

[0002] The PCB enclosure, or printed circuit board enclosure, is a key component that protects and supports the printed circuit board (PCB). It plays an indispensable role in the stable operation of electronic devices, acting like "armor" to provide physical protection for the delicate internal circuitry. It effectively resists external mechanical shocks, vibrations, dust, moisture, and electromagnetic interference, preventing short circuits and component damage caused by external forces or environmental factors, thus ensuring the safety and reliability of electronic devices. In terms of material selection, PCB enclosures offer a wide variety of options. Metal materials such as aluminum alloys and stainless steel, with their high strength, good heat dissipation performance, and excellent electromagnetic shielding capabilities, are commonly used in industrial control and communication base station equipment with high protection and heat dissipation requirements. Plastic materials, due to their low cost, light weight, and ease of processing and molding, and the excellent insulation and flame retardancy of some engineering plastics, are widely used in consumer electronics and home appliances. Furthermore, the design of PCB enclosures must also consider both functionality and ease of use.

[0003] For example, patent CN112436302B discloses a modular electrical protection housing structure, including a housing body, which is composed of a front panel, left and right side panels, a bottom plate, and two upper and lower wiring assemblies. At least two adjacent upper wiring assemblies are provided between the left and right side panels and are connected by connecting strips. The upper and lower wiring assemblies are symmetrical. The bottom plate includes a bottom assembly, which is provided with a first side connecting part, a first inner surface connecting part, a first side connecting groove, and a first inner surface connecting groove. The upper and lower sides of the bottom assembly are provided with a first side connecting part and a first side connecting groove. The first inner surface connecting part and the first inner surface connecting groove are both located on the inner surface of the bottom assembly. The first side connecting groove is located on the left side of the first side connecting part, and the first inner surface connecting groove is located on the left side of the first inner surface connecting part. The two correspond one-to-one. However, when the existing device malfunctions and requires repair or replacement of some components, the non-removable or difficult-to-remove casing makes the repair operation inconvenient, increases repair costs and time, and the casing is difficult to adjust and expand flexibly according to the size and functional requirements of different PCB boards, resulting in poor versatility and inability to meet diverse market demands.

[0004] Therefore, in order to solve such problems, we propose a modular PCB enclosure. Utility Model Content

[0005] The purpose of this utility model is to provide a modular PCB housing to solve the problems mentioned in the background art. When the PCB board malfunctions and needs to be repaired or some components need to be replaced, the housing is not removable or is difficult to disassemble, which leads to inconvenience in maintenance operations, increases maintenance costs and time, and the housing is difficult to flexibly adjust and expand according to the size and functional requirements of different PCB boards, resulting in poor versatility and inability to meet diverse market demands.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a modular PCB housing, including a housing and a cover plate disposed on the top of the housing. A fixing plate is fixedly connected to each of the four feet at the bottom of the cover plate. A sliding groove is opened at the bottom of the fixing plate. A limit rod is fixedly connected in the sliding groove. A return spring is movably sleeved on the outer wall of each end of the limit rod. A slider is movably sleeved on the outer wall of each end of the limit rod. A support is fixedly connected to the bottom of the slider. A clamping ring is fixedly connected to the bottom of the support.

[0007] Furthermore, grooves are provided at the four corners of the top of the housing, and locking posts are fixedly connected to the inner walls of the grooves. The cover plate and the housing are connected to the locking posts by clamping rings.

[0008] Furthermore, a limiting groove is provided on the upper part of the inner wall on both sides of the housing. A double threaded rod is rotatably connected in the limiting groove. A toggle is fixedly connected to the right end of the double threaded rod. A limiting block adapted to the limiting groove is threaded on the double threaded rod. A support plate is fixedly connected between the limiting blocks.

[0009] Furthermore, protective springs are uniformly fixedly connected to the inner wall of the support plate, and a clamping plate is fixedly connected to the side of the protective springs away from the support plate.

[0010] Furthermore, ventilation slots are evenly provided on the top surface of the cover plate, and a filter screen is fixedly connected inside the ventilation slot. Handles are fixedly connected to both sides of the top surface of the cover plate.

[0011] Furthermore, guide posts are uniformly fixedly connected to both sides of the top of the housing, and mounting holes are uniformly opened on both sides of the cover plate, with the guide posts movably connected to the mounting holes.

[0012] Furthermore, side blocks are fixedly connected to both ends of the outer walls on both sides of the housing, and fixing bolts are threaded onto the side blocks.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the modular PCB shell adopts a novel structural design, the specific details of which are as follows:

[0014] (1) This modular PCB housing, through the innovative design of the return spring, clamping ring and locking post, constructs a quick engagement and disengagement mechanism between the cover plate and the housing. When the PCB board needs to be repaired or components need to be replaced, only external force needs to be applied to make the clamping ring disengage from the locking post groove, so that the cover plate and the housing can be separated without damage. The whole process does not require the use of complex tools such as screwdrivers, which greatly shortens the disassembly time. The guide posts on both sides of the top of the housing and the mounting holes on both sides of the cover plate form a precise guiding structure. During the installation process, the positioning effect of the guide posts inserted into the mounting holes can ensure that the four corner clamping rings and locking posts of the cover plate and the housing are quickly aligned, avoiding the installation jamming problem caused by the alignment deviation, further improving the convenience and efficiency of disassembly and assembly operations, and effectively reducing the increase in maintenance costs and time loss caused by the difficulty of disassembling traditional housings.

[0015] (2) The modular PCB housing, with its linkage design of double threaded rod, support plate and clamping plate, constructs a component clamping system with adaptive adjustment capability. By rotating the toggle, the double threaded rod is driven to rotate synchronously. Utilizing the reverse thread structure at both ends, the limit blocks on both sides move towards or away from each other along the limit groove, thereby pushing the support plate to adjust its position laterally. This allows the clamping plate spacing to accurately match the profiles of PCB boards or components of different sizes. During this process, the protective spring on the inner wall of the support plate plays an elastic buffering role. When the clamping plate contacts the component, the flexible clamping force generated by the spring compression can conform to the surface of the component through deformation, forming a stable fixing effect and avoiding damage to the component due to excessive clamping force. This further enhances the housing's adaptability to PCB boards of different sizes and functional requirements, improves its versatility, and meets diverse market demands.

[0016] Furthermore, the evenly spaced ventilation slots on the top surface of the cover, combined with the filter screen inside the ventilation slots, ensure air circulation and achieve good heat dissipation while effectively preventing dust and debris from entering the housing. This protects the PCB board and components from environmental factors such as dust and moisture, extending the service life of the equipment. The handle facilitates handling and moving the housing, improving ease of use. The side blocks at both ends of the outer walls on both sides of the housing, along with the fixing bolts, make it easy to fix the housing to other equipment or structures, ensuring the stability of the housing during use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the cover plate of this utility model;

[0020] Figure 4 This is an exploded view of the mounting components of this utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the fixing component of this utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of the shell of this utility model.

[0023] In the diagram: 1. Cover plate; 11. Filter screen; 12. Fixing plate; 121. Slide groove; 13. Limiting rod; 131. Return spring; 14. Sliding block; 15. Support column; 16. Clamping ring; 2. Housing; 21. Locking post; 3. Double threaded rod; 31. Actuating element; 32. Support plate; 33. Protective spring; 34. Clamping plate. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides the following technical solution: a modular PCB housing.

[0026] Example 1: A modular PCB housing uses components such as a reset spring 131, a clamping ring 16, and a locking post 21 to achieve a snap-fit ​​installation between the cover plate 1 and the housing 2. This avoids the problems of inconvenient maintenance operations, increased maintenance costs, and time caused by the non-removable or difficult-to-disassemble housing when the PCB board malfunctions and requires repair or replacement of components. Figure 1 - Figure 4 As shown, a modular PCB housing includes a housing 2 and a cover plate 1 disposed on the top of the housing 2. A fixing plate 12 is fixedly connected to each of the four corners at the bottom of the cover plate 1. A sliding groove 121 is formed at the bottom of the fixing plate 12, and a limiting rod 13 is fixedly connected within the sliding groove 121. A return spring 131 is movably sleeved on the outer wall of each end of the limiting rod 13. A slider 14 is movably sleeved on the outer wall of each end of the limiting rod 13. A support column 15 is fixedly connected to the bottom of the slider 14, and a clamping ring 16 is fixedly connected to the bottom of the support column 15. Grooves are formed at the four corners of the top of the housing 2, and locking posts 21 are fixedly connected to the inner wall of the grooves. The cover plate 1 and the housing 2 are engaged with the locking posts 21 via the clamping rings 16. Guide posts are evenly fixedly connected to both sides of the top of the housing 2. Mounting holes are evenly formed on both sides of the cover plate 1, and the guide posts are movably connected to the mounting holes.

[0027] Align the cover plate 1 with the top of the housing 2, ensuring the mounting holes on both sides of the cover plate 1 are precisely aligned with the guide posts on both sides of the top of the housing 2. Slowly lower the cover plate 1. As the cover plate 1 descends, the clamping rings 16 at its four bottom corners gradually approach the locking posts 21 at the four top corners of the housing 2. Since the limit rod 13 is movably sleeved with a return spring 131 and a slider 14, when the clamping ring 16 contacts the locking post 21, the inclined surface of the top surface of the locking post 21 will push the clamping ring 16 upward, causing the support column 15 and the slider 14 to slide synchronously along the limit rod 13, compressing the return spring 131 to store energy. When the clamping ring 16 moves into the locking groove of the locking post 21... When in position, the return spring 131 releases its elastic force, pushing the slider 14 and the clamping ring 16 to quickly return to their original positions, causing the inner flange of the clamping ring 16 to engage with the annular groove of the locking post 21, thus completing the locking installation of the cover plate 1 and the housing 2. When disassembling, the clamping ring 16 is pulled outward horizontally to overcome the elastic force of the return spring 131, slide upward along the limit rod 13 and disengage from the locking state of the locking post 21. Subsequently, by applying force through the handles on both sides of the top surface of the cover plate 1, the cover plate 1 is lifted vertically along the guide post. The sliding cooperation between the guide post and the mounting hole provides a stable guide for the disassembly process, ultimately achieving the rapid separation of the cover plate 1 and the housing 2.

[0028] Example 2: Unlike Example 1, this example utilizes the synergistic action of components such as the double-threaded rod 3, support plate 32, and clamping plate 34 to clamp and fix the components on both sides, preventing loosening. This prevents the casing from being difficult to flexibly adjust and expand according to the size and functional requirements of different PCB boards, resulting in poor versatility and an inability to meet diverse market demands. Figures 5-6 As shown, limit grooves are provided on the upper part of the inner walls on both sides of the housing 2. A double threaded rod 3 is rotatably connected in the limit groove. A toggle piece 31 is fixedly connected to the right end of the double threaded rod 3. A limit block adapted to the limit groove is threadedly connected to the double threaded rod 3. A support plate 32 is fixedly connected between the limit blocks. A protective spring 33 is evenly fixedly connected to the inner wall of the support plate 32. A clamping plate 34 is fixedly connected to the side of the protective spring 33 away from the support plate 32. Ventilation grooves are evenly provided on the top surface of the cover plate 1. A filter screen 11 is fixedly connected in the ventilation groove. A handle is fixedly connected to both sides of the top surface of the cover plate 1. Side blocks are fixedly connected to both ends of the outer walls on both sides of the housing 2. A fixing bolt is threadedly connected to the side block.

[0029] According to the size requirements of the PCB board or components, the rotating actuator 31 drives the double threaded rod 3 to rotate. The double threaded rod 3, through its two reverse threaded structures, forms a threaded transmission pair with the limiting blocks on both sides. The limiting blocks, constrained by the guiding grooves, can only translate axially along the double threaded rod 3. When the double threaded rod 3 rotates clockwise, the left limiting block moves axially to the right, and the right limiting block moves axially to the left, causing the support plate 32 to retract towards the center. Conversely, when the double threaded rod 3 rotates counterclockwise, the limiting blocks on both sides move in opposite directions, and the support plate 32 unfolds to both sides. During the movement of the support plate 32, its… The protective springs 33, evenly distributed on the inner wall, generate elastic thrust, which pushes the clamping plate 34 to move synchronously. When the clamping plate 34 contacts the component, the spring is compressed and deformed to form a flexible clamping force. This force is kept in dynamic balance through the elastic buffering effect of the spring. It can achieve a stable fixation by the close contact between the inner surface of the clamping plate 34 and the component, while avoiding damage to the surface of the component or deformation of the internal structure due to rigid compression. This mechanism realizes stepless adjustment of the spacing between the clamping plates 34 through the synergistic effect of mechanical transmission and elastic mechanics, and accurately adapts to multiple application scenarios from compact component groups to large PCB boards.

[0030] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular PCB housing, comprising a housing (2) and a cover plate (1) disposed on the top of the housing (2), characterized in that: Fixed plates (12) are fixedly connected to the four corners of the bottom of the cover plate (1). The bottom of the fixed plate (12) is provided with a sliding groove (121). A limit rod (13) is fixedly connected in the sliding groove (121). A return spring (131) is movably sleeved on the outer wall of both ends of the limit rod (13). A slider (14) is movably sleeved on the outer wall of both ends of the limit rod (13). A support column (15) is fixedly connected to the bottom of the slider (14). A clamping ring (16) is fixedly connected to the bottom of the support column (15).

2. A modular PCB housing according to claim 1, characterized in that: The shell (2) has grooves at the four corners of the top, and a locking post (21) is fixedly connected to the inner wall of the groove. The cover plate (1) and the shell (2) are engaged with the locking post (21) by a clamping ring (16).

3. A modular PCB housing according to claim 1, characterized in that: Limiting grooves are provided on the upper part of the inner walls on both sides of the housing (2). A double threaded rod (3) is rotatably connected in the limiting groove. A toggle piece (31) is fixedly connected to the right end of the double threaded rod (3). A limiting block adapted to the limiting groove is threaded on the double threaded rod (3). A support plate (32) is fixedly connected between the limiting blocks.

4. A modular PCB housing according to claim 3, characterized in that: Protective springs (33) are uniformly fixedly connected to the inner wall of the support plate (32), and a clamping plate (34) is fixedly connected to the side of the protective spring (33) away from the support plate (32).

5. A modular PCB housing according to claim 1, characterized in that: The top surface of the cover plate (1) is evenly provided with ventilation slots, and a filter screen (11) is fixedly connected inside the ventilation slots. Handles are fixedly connected to both sides of the top surface of the cover plate (1).

6. A modular PCB housing according to claim 1, characterized in that: The top two sides of the housing (2) are uniformly fixedly connected with guide posts, and the two sides of the cover plate (1) are uniformly provided with mounting holes, and the guide posts are movably connected to the mounting holes.

7. A modular PCB housing according to claim 1, characterized in that: Both ends of the outer walls on both sides of the housing (2) are fixedly connected to side blocks, and the side blocks are threaded with fixing bolts.

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