A shell structure of a key type PCB circuit board

Abstract

The utility model discloses a kind of shell structures of key type PCB circuit board, including shell and cover rear end of shell rear cover piece, shell and rear cover piece are mutually locked and fixed, shell and rear cover piece cooperation form relatively closed mounting chamber, PCB circuit board is installed in the mounting chamber, the buckle window of shell side wall in the utility model allows and directly buckling joint installation with external device, without reserving screw hole, simplify installation process and reduce structural modification cost;Man-machine interaction window of shell front end surface provides intuitive operation interface, while power socket window and data interaction window on rear cover piece support quick plug and pull wiring and program upgrade, realize the plug and play compatible switching of key type PCB circuit board and PLC integrated controller;The standardized design of the utility model solves installation size difference, so that equipment upgrade iteration does not need to be rewired or modify box structure, significantly reduce after-sales maintenance complexity and time cost.

Description

Technical Field

[0001] This utility model relates to the field of electrical control technology for printing equipment, specifically to a housing structure for a button-type PCB circuit board. Background Technology

[0002] As common industrial printing equipment, screen printing machines and pad printing machines typically have a control system core consisting of a PCB circuit board that integrates a microprocessor, interface circuits, and operation buttons. During equipment upgrades and iterations, in order to balance functionality and cost, manufacturers often need to choose or switch between low-cost button-type PCB circuit boards and high-performance PLC integrated controllers. Although PLC integrated controllers have complete functions, they are expensive, increasing the price of the entire machine.

[0003] In the control system technologies of screen printing machines and pad printing machines, the existing control circuit board housing 100 structure is difficult to achieve plug-and-play compatibility and replacement with older versions of equipment or PLC integrated controllers due to its inconsistent installation method and size specifications.

[0004] When users attempt to replace their existing PLC controllers with lower-cost button-type PCBs, or switch controllers between different generations of equipment, they often encounter installation problems due to incompatibility in mechanical structures such as screw hole positions, dimensions, and interface opening locations. This necessitates modifications to the equipment enclosure structure or rewiring for upgrades, significantly increasing upgrade costs and the complexity and time required for after-sales maintenance.

[0005] Therefore, there is an urgent need for a standardized housing structure that can resolve installation differences and enable the quick and convenient replacement of different control circuit boards in the same installation space, thereby effectively solving the compatibility bottleneck in equipment iteration. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A housing structure for a button-type PCB circuit board, comprising: The housing and the rear cover are locked together and fixed to each other. The housing and the rear cover cooperate to form a relatively sealed mounting chamber, in which a PCB circuit board is installed. The housing has a snap-fit ​​window on its side wall, which is used for snap-fit ​​installation with external equipment. The front end face of the housing is provided with several human-computer interaction windows; The rear end face of the rear cover is provided with a power socket window and a data interaction window; The PCB circuit board is equipped with electronic module components that are respectively aligned and cooperate with the human-computer interaction window and the data interaction window.

[0008] As a further embodiment of this utility model: the human-machine interaction window includes a physical button through hole, an indicator light hole, and a digital tube display window that penetrate the front end of the housing; the electronic module component includes a micro switch that aligns with the physical button through hole, a digital tube display screen that aligns with the digital tube display window, and a running indicator light that aligns with the indicator light hole.

[0009] As a further embodiment of this utility model: the data interaction window includes a gold finger window and an I / O interface window that penetrate the back cover; the electronic module assembly includes a power terminal block socket that aligns with the power socket window, a gold finger slot that aligns with the gold finger window, and an I / O interface module that aligns with the I / O interface window; the I / O interface module is composed of several terminal blocks.

[0010] As a further embodiment of this utility model: the rear cover is provided with a first screw through hole, the housing is fixedly provided with a screw post that aligns with the first screw through hole, and the surfaces of the rear cover and the housing opposite each other are respectively provided with nested male and female steps.

[0011] As a further embodiment of this utility model: a support boss is provided at the corner of the inner bottom surface of the housing, and a second screw through hole is provided along the axis of the support boss to the front end face of the housing. The front end face of the housing is provided with a nut clamping groove that communicates with the second screw through hole. A clamping nut is installed in the nut clamping groove. The PCB circuit board is pre-set with screw mounting holes that align and cooperate with the second screw through hole.

[0012] As a further embodiment of this utility model: the inner wall of the housing is formed with a side reinforcement fixed to the inner bottom surface; the side of the screw post is fixed to the inner wall of the housing, and the rear end of the screw post is fixed to the inner bottom surface of the housing. The screw post and the side reinforcing bar are respectively located on both sides of the buckle window.

[0013] As a further embodiment of this utility model: the inner wall of the housing and the lower end of the screw post are respectively fixed with support rods; The support bar and the support boss are at the same height.

[0014] As a further embodiment of this utility model: the left and right end faces of the rear cover are provided with interface grooves, the I / O interface window is opened on the inner bottom surface of the interface groove, and plug-in spaces are preset on both sides of the I / O interface window.

[0015] As a further embodiment of this utility model: the rear cover is provided with bosses on both the left and right sides, and multiple arc-shaped reinforcing bars are fixedly installed on the inner side of the bosses, and the arc-shaped reinforcing bars are respectively aligned and cooperate with the screw posts and the side reinforcing bars.

[0016] As a further embodiment of this utility model: a plug step is fixed inside the power socket window, and the height of the plug step is adapted to the power terminal socket.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The housing structure of this utility model's button-type PCB circuit board forms a relatively sealed installation chamber through the interlocking of the housing and rear cover, effectively protecting the internal PCB circuit board. The snap-fit ​​window on the side wall of the housing allows for direct snap-fit ​​installation with external equipment without the need for pre-drilled screw holes, simplifying the installation process and reducing structural modification costs. The human-machine interface window on the front face of the housing provides an intuitive operating interface, while the power socket window and data interaction window on the rear cover support quick plug-and-play wiring and program upgrades, achieving plug-and-play compatibility between the button-type PCB circuit board and the PLC integrated controller. The standardized design of this utility model solves the problem of installation size differences, eliminating the need for rewiring or modification of the enclosure structure during equipment upgrades, significantly reducing the complexity and time cost of after-sales maintenance, while also ensuring stable operation of the circuit board, balancing functional flexibility and reliability while controlling manufacturing costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is another three-dimensional view of the structure of this utility model; Figure 3 This is a rear view of the present invention; Figure 4 This is an exploded view of the structure of this utility model; Figure 5 This is another exploded view of the structure of this utility model; Figure 6 This is a three-dimensional structural view of the shell in this utility model; Figure 7 This is another three-dimensional view of the shell structure in this utility model; Figure 8 This is a three-dimensional structural view of the PCB circuit board in this utility model; Figure 9 This is another three-dimensional view of the PCB circuit board in this utility model; Figure 10 This is a schematic diagram of the state during the installation process of this utility model; Figure 11 This is a perspective view of the buckle structure in one embodiment of this utility model; The reference numerals and names in the figure are as follows: Housing - 100, Rear Cover - 101, Mounting Chamber - 102, PCB Circuit Board - 103, Clip Window - 104, Human-Machine Interface Window - 105, Power Socket Window - 106, Data Interaction Window - 107, Electronic Module Assembly - 108, Physical Button Through Hole - 109, Indicator Light Hole - 110, Digital Tube Display Window - 111, Micro Switch - 112, Digital Tube Display - 113, Operation Indicator Light - 114, Gold Finger Window - 115, I / O Interface Window - 116, Power Terminal Block Socket - 117, Gold Finger Slot - 1 18, I / O interface module - 119, terminal block socket - 120, first screw through hole - 121, screw post - 122, male and female steps - 123, support boss - 124, second screw through hole - 125, nut clamp sleeve groove - 126, clamp sleeve nut - 127, screw mounting hole - 128, side reinforcement bar - 129, support bar - 130, interface groove - 131, plug-in space - 132, boss guard edge - 133, arc-shaped reinforcement bar - 134, plug step - 135, grille vent - 136, panel sticker - 137, clip - 138. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-11 A housing structure for a button-type PCB circuit board, comprising: The housing 100 and the rear cover 101 are provided at the rear end of the housing 100. The housing 100 and the rear cover 101 are locked together and fixed. The housing 100 and the rear cover 101 cooperate to form a relatively sealed installation chamber 102. The installation chamber 102 is equipped with a PCB circuit board 103. The housing 100 has a snap-fit ​​window 104 on its side wall, which is used for snap-fit ​​installation with external equipment. The front end face of the housing 100 is provided with a plurality of human-computer interaction windows 105; The rear end face of the rear cover 101 is provided with a power socket window 106 and a data interaction window 107. The PCB circuit board 103 is equipped with electronic module components 108 that are respectively aligned and cooperate with the human-machine interaction window 105 and the data interaction window 107. like Figure 1 and 2 As shown, the housing 100 structure of this utility model is easy to install and apply, and can be used with existing PLC integrated controllers. Screen printing equipment using old PCB circuit boards 103 can be upgraded through simple wiring. Replacement and installation are convenient and do not affect the upgrading and iteration of screen printing equipment. In particular, for the PLC integrated controller of our company's rocker screen printing machine, it achieves the universality of old and new models, plug and play, and requires no other operation. When the housing 100 structure of this utility model is installed and applied to a pad printing device, it can be applied to the pad printing device simply by connecting the corresponding control program through the gold finger slot 118, which is convenient for installation and application. The snap-fit ​​window 104 on the side wall of the housing 100 allows the entire controller module to be installed directly by snapping it with the standard window reserved on the equipment body without the need for traditional screws. This simplifies the installation process, reduces the processing requirements of the equipment body, and achieves "foolproof" installation. The human-machine interaction windows 105 on the front face of the housing 100 provide a precise display and operation channel for the physical buttons, indicator lights and digital tube display screen 113 on the PCB circuit board 103, ensuring the intuitiveness of user operation and the clarity of feedback. The rear cover 101 is provided with a power socket window 106 and a data interaction window 107. The power socket window 106 corresponds to a universal power terminal, while the data interaction window 107 provides an entry point for program upgrades and data communication. The standardized layout of these two windows makes the physical size and position of the external interface of the button-type PCB circuit board 103 of this structure and the traditional PLC integrated controller unified, thereby achieving convenient "plug and play" switching. Meanwhile, a relatively sealed mounting chamber 102 is formed between the housing 100 and the rear cover 101 to protect the internal PCB circuit board 103 from dust and foreign objects, and more effectively prevent the housing 100 from deforming due to installation stress or external impact, ensuring the long-term stability of the alignment of all interfaces and buttons. In summary, the housing 100 structure of the button-type PCB circuit board 103 of this utility model forms a relatively sealed installation chamber 102 through the interlocking of the housing 100 and the rear cover 101, effectively protecting the internal PCB circuit board 103. The snap-fit ​​window 104 on the side wall of the housing 100 allows direct snap-fit ​​installation with external equipment without the need for pre-drilled screw holes, simplifying the installation process and reducing structural modification costs. The human-machine interface window 105 on the front face of the housing 100 provides an intuitive operating interface, while the power socket window 106 and data interaction window 107 on the rear cover 101 support quick plug-and-play wiring and program upgrades, realizing plug-and-play compatible switching between the button-type PCB circuit board 103 and the PLC integrated controller. The standardized design of this utility model solves the problem of installation size differences, so that there is no need to rewire or modify the cabinet structure when upgrading and iterating the equipment, which significantly reduces the complexity and time cost of after-sales maintenance, while also helping to ensure the stable operation of the circuit board, taking into account both functional flexibility and reliability while controlling manufacturing costs.

[0021] In this embodiment of the present invention, the human-computer interaction window 105 includes a physical button through hole 109, an indicator light hole 110, and a digital tube display window 111 that penetrate the front end face of the housing 100. The electronic module assembly 108 includes a micro switch 112 that is aligned with the physical button through hole 109, a digital tube display screen 113 that is aligned with the digital tube display window 111, and a running indicator light 114 that is aligned with the indicator light hole 110. like Figure 4 As shown, by concretizing the human-computer interaction window 105 into a physical button through hole 109, indicator light hole 110 and digital tube display window 111 that penetrate the front face of the housing 100, and precisely aligning and cooperating with the micro switch 112, running indicator light 114 and digital tube display screen 113 on the PCB circuit board 103, a complete and reliable human-computer interaction channel is constructed. The physical button via 109 provides precise trigger guidance and protection for the micro switch 112, ensuring that each press action can be effectively triggered without misalignment. The indicator light hole 110 concentrates the light signal of the running indicator light 114 to avoid light scattering and improve the recognizability of the status indication. The digital tube display window 111 ensures that the characters on the digital tube display screen 113 can be clearly displayed without obstruction. This modular window layout and the alignment relationship of the internal components simplify the installation and positioning process of the PCB circuit board 103, and improve assembly efficiency and product consistency.

[0022] In this embodiment of the present invention, the data interaction window 107 includes a gold finger window 115 and an I / O interface window 116 that penetrate the rear cover 101. The electronic module assembly 108 includes a power terminal block socket 117 that aligns with the power socket window 106, a gold finger slot 118 that aligns with the gold finger window 115, and an I / O interface module 119 that aligns with the I / O interface window 116. The I / O interface module 119 is composed of a plurality of terminal blocks 120. like Figure 5 As shown, by setting a gold finger window 115 and an I / O interface window 116 on the back cover 101, and precisely aligning them with the gold finger slot 118 on the PCB circuit board 103 and the I / O interface module 119 composed of terminal block socket 120, a centralized and standardized external data and power connection system is constructed. The gold finger window 115 provides a convenient plug-in channel for memory chips that can be upgraded or expanded in terms of function. The I / O interface window 116 exposes all input / output terminals, allowing external device cables to be directly and quickly connected to the corresponding terminal sockets. The power socket window 106 ensures a stable power supply. The standardized layout of all interfaces provides a physical basis for the compatibility and interchangeability of different controllers, thereby significantly improving the convenience of equipment upgrades and maintenance.

[0023] In this embodiment of the utility model, the rear cover 101 is provided with a first screw through hole 121, and the housing 100 is fixed with a screw post 122 that is aligned and cooperates with the first screw through hole 121. The rear cover 101 and the housing 100 are respectively provided with nested male and female steps 123 on their opposite surfaces. like Figure 5 As shown, by providing a first screw through hole 121 on the rear cover 101, fixing a screw post 122 at the corresponding position in the housing 100, and providing nested male and female steps 123 on the opposite surfaces of the two, a high-precision positioning and locking mechanism is formed together. During assembly, the male and female steps 123 are first pre-positioned to ensure that the rear cover 101 and the housing 100 are completely aligned in three-dimensional space, effectively preventing misalignment and displacement. Then, the self-tapping screws pass through the first screw through hole 121 and are screwed into the screw post 122. The resulting locking force is borne by the evenly contacting male and female steps 123, thereby avoiding stress concentration at a single point. It effectively prevents interface misalignment or poor sealing caused by installation deviation. At the same time, the male and female step 123 structure disperses the locking stress, greatly enhancing the rigidity and stability of the mating surface of the housing 100, effectively resisting external impact and internal insertion and extraction forces, and preventing deformation of the housing 100.

[0024] In this embodiment of the utility model, a support boss 124 is provided at the corner of the inner bottom surface of the housing 100, and a second screw through hole 125 is provided along the axis of the support boss 124 to the front end face of the housing 100. The front end face of the housing 100 is provided with a nut clamping groove 126 that communicates with the second screw through hole 125. A clamping nut 127 is installed in the nut clamping groove 126. The PCB circuit board 103 is provided with a screw mounting hole 128 that aligns with the second screw through hole 125. like Figure 6 and 7 As shown, by setting support bosses 124 at the corners of the bottom surface inside the housing 100, and opening a second screw through hole 125 along its axis to the front end face of the housing 100, and opening a nut clamping groove 126 with built-in clamping nut 127 at the corresponding position on the front end face of the housing 100, together with the screw mounting hole 128 on the PCB circuit board 103, a stable fixing scheme for assembly from the front is formed. The support boss 124 first provides a precise support plane for the PCB circuit board 103, ensuring that the micro switch 112, display screen and other components on the PCB circuit board 103 maintain the correct relative height with each window on the front face of the housing 100. During assembly, the screw passes through the screw mounting hole 128 of the PCB circuit board 103 in sequence through the second screw through hole 125 and the nut clamping groove 126, and finally screws into the clamping nut 127 that is pre-embedded in the nut clamping groove 126, thereby firmly pressing the PCB circuit board 103 onto the support boss 124. The PCB circuit board 103 is positioned and reliably fixed, preventing button jamming or unclear display caused by inaccurate component height. At the same time, the "front-mounted" screw fastening solution simplifies the assembly and maintenance process while ensuring the stability of the connection.

[0025] In this embodiment of the present invention, the inner wall of the housing 100 is formed with a side reinforcement 129 fixed to the inner bottom surface; the side of the screw post 122 is fixed to the inner wall of the housing 100, and the rear end of the screw post 122 is fixed to the inner bottom surface of the housing 100. The screw post 122 and the side reinforcing bar 129 are respectively disposed on both sides of the buckle window 104; like Figure 6 As shown, by providing side reinforcing ribs fixed to the inner bottom surface on the inner wall of the housing 100, and fixing the side and rear end of the screw post 122 to the inner wall and inner bottom surface of the housing 100 respectively, and making the screw post 122 and the side reinforcing ribs located on both sides of the snap-on window 104 respectively, together forming a reinforced support frame for the snap-on 138 mounting point. When the latch 138 is tightened to secure the entire housing 100 to the external device, a lateral stress is generated that causes the sidewall of the housing 100 to be pressed inward. At this time, the screw posts 122 and the side reinforcing ribs located on both sides of the latch window 104 act as sturdy pillars, effectively resisting and dispersing the concentrated stress, and preventing excessive elastic or plastic deformation of the sidewall of the housing 100. This ensures that the clip 138 can be fully tightened to achieve a secure installation, while avoiding problems such as stress on the internal PCB circuit board 103 or misalignment of interfaces caused by deformation of the housing 100.

[0026] In this embodiment of the utility model, the inner wall of the housing 100 and the lower end of the screw post 122 are respectively fixed with support rods 130; The support rod 130 and the support boss 124 are at the same height; like Figure 6 As shown, by providing support ribs with the same height as the support boss 124 on the inner wall of the housing 100 and the lower end of the screw post 122, a complete and uniform support plane is formed. When the PCB circuit board 103 is secured to the support boss 124 by screws, these support ribs, which have a larger contact area inside, can provide synchronous and flat auxiliary support for the bottom surface of the circuit board and key stress areas (such as the areas near the screw post 122 and the side wall). It effectively prevents the PCB circuit board 103 from deflecting or twisting in the middle area when subjected to terminal insertion and extraction forces or external vibrations, improves the overall rigidity and stability of the circuit board installation, protects the electronic components on the board from mechanical stress damage, and ensures the long-term accuracy of the alignment between all electronic module components 108 and human-machine interface window 105.

[0027] In this embodiment of the present invention, the rear cover 101 is provided with interface grooves 131 on both the left and right ends, and I / O interface windows 116 are opened on the inner bottom surface of the interface grooves 131. Insertion and removal spaces 132 are preset on both sides of the I / O interface windows 116. like Figure 2 and 3 As shown, by providing interface grooves 131 on the left and right end faces of the rear cover 101 and opening the I / O interface window 116 on the inner bottom surface of the groove, while reserving sufficient plug-in space 132 on both sides of the window, an operating area optimized for external cable connection is constructed. When a user needs to connect or disconnect the terminals on the I / O interface module 119, the interface groove 131 provides the necessary longitudinal accommodation and lateral force application space for fingers or tools, so that the operation process is not hindered by the surrounding structure; effectively avoiding problems such as difficulty in plugging and unplugging terminals and poor connection caused by insufficient operating space. At the same time, the groove structure also plays a physical protection and guiding role for the dense interfaces.

[0028] In this embodiment of the utility model, the rear cover 101 is provided with protruding side plates 133 on both the left and right sides, and a plurality of arc-shaped reinforcing bars 134 are fixedly installed on the inner side of the protruding side plates 133. The arc-shaped reinforcing bars 134 are respectively aligned and cooperate with the screw post 122 and the side reinforcing bars 129. like Figure 2 and Figure 5 As shown, by providing bosses and baffles 133 on the left and right sides of the rear cover 101, and fixing multiple arc-shaped reinforcing bars 134 on their inner side, and making these arc-shaped reinforcing bars 134 precisely aligned and engaged with the screw posts 122 and the side reinforcing bars 129 in the housing 100, a reinforced structure for transmitting and dispersing stress across components is constructed. When the housing 100 is installed on the equipment through the side wall snap window 104 and the snap 138 is tightened, the compressive force generated will be transmitted through the side wall of the housing 100 to the internal screw post 122 and side reinforcement 129. At this time, the arc-shaped reinforcement 134 on the rear cover is directly opposite these two support points, and will directly guide and transmit part of the force borne by the boss edge 133 to these core support structures. The localized concentrated stress is effectively dispersed to the entire shell 100 structure, which enhances the overall rigidity and deformation resistance of the shell 100 assembly in the locking state of the snap 138; like Figure 10 As shown, the boss edge 133 effectively compensates for the tilting problem that occurs when the buckle 138 is installed due to the insufficient height of the main body of the housing 100 by adding extra height on the left and right sides of the rear cover 101. When the housing 100 is installed onto the equipment enclosure via the snap fastener 138, the boss flange 133 provides a higher support plane for the base of the snap fastener 138, ensuring that the snap fastener 138 can be locked in a nearly vertical position, thereby avoiding abnormal stress caused by excessive tilting of the snap fastener 138; preventing excessive local deformation of the housing 100, loose fastening, or even installation failure caused by tilting of the snap fastener 138, and significantly improving the stability of the housing 100 installed on the equipment enclosure.

[0029] In this embodiment of the utility model, a plug step 135 is fixedly provided inside the power socket window 106, and the height of the plug step 135 is adapted to the power terminal socket 117. like Figure 2 and5 As shown, by fixing a plug step 135, which is adapted to the height of the power terminal socket 117, inside the power socket window 106, a guiding and limiting mechanism is established for the insertion of the power plug. This stepped structure guides the power plug to engage with the socket at the correct angle and depth, and its specific height ensures the fit between the plug and socket contacts and eliminates misalignment between them. It effectively prevents poor contact, arcing due to improper plugging, or power reduction. At the same time, the physical structure of the steps also serves to prevent reverse plugging, fundamentally avoiding equipment damage caused by misoperation.

[0030] In this embodiment of the present invention, a plurality of through-hole grille ventilation holes 136 are provided on the upper and lower sides of the rear end face of the rear cover 101. like Figure 2 As shown, by opening multiple through-hole grille ventilation holes 136 on the rear cover 101, an air convection heat dissipation channel is constructed. When the electronic components (such as power modules or processors) on the PCB circuit board 103 inside the housing 100 are working, they generate heat, causing the internal air temperature to rise. The hot air rises naturally due to its lower density and is discharged through one of the grille ventilation holes 136. At the same time, the cooler external air is drawn in from the other grille ventilation hole 136, forming a continuous heat exchange cycle, which effectively prevents the accumulation of internal heat.

[0031] In this embodiment of the present invention, a panel sticker 137 is affixed to the front end of the housing 100. The panel sticker 137 is a control panel sticker 137 custom-printed from PVC or PC film. Functional markings that align with the human-machine interaction window 105 are printed on the panel sticker 137. like Figure 4 As shown, this improves the recognizability of different microswitches 112, enhances the convenience of operation for workers, and also provides a certain degree of protection for the electronic module assembly 108.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A housing structure for a button-type PCB circuit board, characterized in that, include: The housing (100) and the rear cover (101) covering the rear end of the housing (100) are locked together and fixed. The housing (100) and the rear cover (101) cooperate to form a relatively sealed installation chamber (102), and a PCB circuit board (103) is installed in the installation chamber (102). The housing (100) has a snap-fit ​​window (104) on its side wall, which is used for snap-fit ​​installation with external equipment; The front end face of the housing (100) is provided with several human-computer interaction windows (105). The rear end face of the rear cover (101) is provided with a power socket window (106) and a data interaction window (107). The PCB circuit board (103) is equipped with electronic module components (108) that are respectively aligned with the human-machine interaction window (105) and the data interaction window (107).

2. The housing structure of a button-type PCB circuit board according to claim 1, characterized in that, The human-machine interaction window (105) includes a physical button through hole (109), an indicator light hole (110), and a digital tube display window (111) that pass through the front end of the housing (100). The electronic module assembly (108) includes a micro switch (112) that is aligned with the physical button through hole (109), a digital tube display screen (113) that is aligned with the digital tube display window (111), and a running indicator light (114) that is aligned with the indicator light hole (110).

3. The housing structure of a button-type PCB circuit board according to claim 2, characterized in that, The data interaction window (107) includes a gold finger window (115) and an I / O interface window (116) that extend through the rear cover (101). The electronic module assembly (108) includes a power terminal block socket (117) that aligns with the power socket window (106), a gold finger slot (118) that aligns with the gold finger window (115), and an I / O interface module (119) that aligns with the I / O interface window (116). The I / O interface module (119) is composed of a plurality of terminal blocks (120).

4. The housing structure of a button-type PCB circuit board according to any one of claims 1-3, characterized in that, The rear cover (101) is provided with a first screw through hole (121), and the housing (100) is fixed with a screw post (122) that is aligned and engaged with the first screw through hole (121). The rear cover (101) and the housing (100) are respectively provided with nested male and female steps (123).

5. The housing structure of a button-type PCB circuit board according to any one of claims 1-3, characterized in that, The inner bottom surface of the housing (100) is provided with a support boss (124) at the corners, and a second screw through hole (125) is provided along the axis of the support boss (124) and extends to the front end face of the housing (100). The front end face of the housing (100) is provided with a nut clamping groove (126) that communicates with the second screw through hole (125). A clamping nut (127) is installed in the nut clamping groove (126). The PCB circuit board (103) is provided with a screw mounting hole (128) that is aligned and cooperates with the second screw through hole (125).

6. The housing structure of a button-type PCB circuit board according to claim 4, characterized in that, The inner wall of the housing (100) is formed with a side reinforcing bar (129) fixed to the inner bottom surface; the side of the screw post (122) is fixed to the inner wall of the housing (100), and the rear end of the screw post (122) is fixed to the inner bottom surface of the housing (100). The screw post (122) and the side reinforcing bar (129) are respectively located on both sides of the snap-fit ​​window (104).

7. The housing structure of a button-type PCB circuit board according to claim 6, characterized in that, The inner wall of the housing (100) and the lower end of the screw post (122) are respectively fixed with support rods (130); The support bar (130) and the support boss (124) are at the same height.

8. The housing structure of a button-type PCB circuit board according to any one of claims 1-3, characterized in that, The rear cover (101) has interface grooves (131) on both the left and right ends. An I / O interface window (116) is opened on the inner bottom surface of the interface groove (131). There are plug-in spaces (132) on both sides of the I / O interface window (116).

9. The housing structure of a button-type PCB circuit board according to claim 6, characterized in that, The rear cover (101) is provided with bosses (133) on both the left and right sides. Multiple arc-shaped reinforcing bars (134) are fixedly installed on the inner side of the bosses (133). The arc-shaped reinforcing bars (134) are respectively aligned and cooperate with the screw post (122) and the side reinforcing bars (129).

10. The housing structure of a button-type PCB circuit board according to any one of claims 1-3, characterized in that, The power socket window (106) is fixedly provided with a plug step (135), the height of which is adapted to the power terminal socket (117).

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