A modular power supply module, dimming power supply and its glue filling process

Abstract

The present invention provides a modular power supply module, a dimming power supply, and a glue-filling process therefor, comprising a first housing cavity housing the power supply module, a first elastic seal nested in a first notch, and forming an interference fit with the outer surface of the external wiring port of the power supply module through the first elastic seal; a first slotted hole extending through the closed end and the bottom shell on the same vertical axis, and a second elastic seal sleeved between the first slotted holes, forming an interference fit with the outer surface of the second elastic seal; one end of the second elastic seal communicates with the inner cavity of the first housing, and the other end abuts against the surface of the first welding port to form a vertical sealed channel. The present invention, through the modular power supply module, limits the glue-filling operation to the independent power supply module, thereby improving the production and maintenance efficiency of the dimming power supply, and enhancing the product yield and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of dimming power supplies, and in particular to a power supply module with a modular structure, a dimming power supply and a glue-filling process thereof. Background Art

[0002] In the current structural design and manufacturing of dimming power supplies, the power module and control panel components of products such as knob-panel dimming power supplies are often integrally formed, and the control panel components and power module are not assembled separately during manufacturing. This integrated dimming power supply design securely connects the control panel (including the PCB control board, knob encoder, and display) with the power module (including the high-frequency transformer, rectifier bridge, MOSFET, and other components) within a single enclosed housing. This seemingly simple design streamlines the assembly process, but in reality, it presents multiple technical risks.

[0003] The production and maintenance efficiency of existing integrated dimming power supply products is low. During the production process, the integrated structure requires that the power module, which includes high-voltage side components such as the AC / DC conversion unit and transformer, and the control module, which includes low-voltage side components such as the knob encoder and MCU control board, be assembled in the same process. This requires synchronized operation of the high and low voltage components. However, high-voltage and low-voltage components often have different requirements for the production environment and test equipment. During synchronized operation, process parameters must be frequently switched, resulting in a lengthy process chain and low production efficiency during actual processing. At the same time, the integrated structural design increases the burden of systematic disassembly during product maintenance. For example, if only a faulty knob encoder needs to be replaced, the entire power supply glue module must be disassembled, including manually peeling off the cured glue layer and removing the high-voltage wiring. This makes maintenance work time-consuming and labor-intensive, and increases product downtime losses.

[0004] Because the power module itself has heat dissipation requirements, it needs to be glued during manufacturing to improve the heat dissipation, moisture resistance, and insulation strength of the dimming power supply. However, when the power module is glued under the existing one-piece molding structure design, there is an unavoidable risk of contamination in parts that do not require glue, such as the button panel. During the glue filling operation, the flowing glue can easily penetrate the panel area through the tiny gap at the junction of the control panel and the power module, resulting in glue residue in the control panel. The solidified glue remaining in the panel joints will form visible stains, affecting the product appearance and customer experience; what's more, the residual glue may cause serious functional defects such as the knob shaft core of the knob panel to become stuck and the transparent film of the display to be contaminated, resulting in a decrease in the yield rate and reliability of the knob panel dimming power supply product.

[0005] Therefore, there is an urgent need for a modular structure design power supply module, dimming power supply and its glue filling process that can avoid the above problems. Summary of the Invention

[0006] In order to solve the common problems in the prior art, the purpose of the present invention is to provide a modular power supply module, a dimming power supply and a glue filling process thereof. The invention realizes rapid disassembly and assembly through the modular and split structural design of the power supply module and the control panel, and limits the glue filling operation to the independent power supply module, thereby completely eliminating the possibility of colloid contamination of the panel, thereby achieving the effect of improving the production and maintenance efficiency of the dimming power supply, and improving the product yield and reliability.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0008] A power supply module with a modular structure includes a power supply module for supplying power to a dimming power supply, and also includes a first shell, the first shell is a semi-enclosed shell with an open end, the power supply module is accommodated in its cavity, a bottom shell cover is provided on the open end below the first shell, and a bottom shell is provided above the closed end opposite to the open end, and a control circuit board is provided above the bottom shell; a first through-notch is provided on the side wall of the first shell, and a first elastic seal is nested in the first notch, which forms an interference fit with the outer surface of the external wiring port of the power module through the first elastic seal; the closed end and the bottom shell are respectively provided with a through-first slot on the same vertical axis, and the position of the first slot corresponds to the position of the first welding port of the control circuit board; a second elastic seal is inserted between the closed end and the first slot on the bottom shell, and forms an interference fit with the outer surface of the second elastic seal, the second elastic seal is a hollow structure, one end of which is connected to the inner cavity of the first shell, and the other end abuts against the surface of the first welding port, thereby forming a vertical sealed channel for the dimming power supply module.

[0009] A further solution is that the first shell is a double-layer shell structure with an inner and outer shell, the inner shell is a semi-enclosed cavity with one end open, and the outer shell is coaxially sleeved on the radial outside of the inner shell and completely covers the circumferential side of the inner shell; the sides of the inner shell and the outer shell are respectively provided with the first notches in the same radial direction to form a cable channel; the bottom shell cover covers the open end of the inner shell to form a closed chamber.

[0010] A further solution is that a first fastener is provided on the bottom shell cover, and the first fastener is detachably connected to the outer shell to achieve pre-sealing of the power module.

[0011] First fixing holes are also provided at corresponding positions of the bottom shell cover and the bottom of the shell, and corresponding fasteners are used to fix them through the first fixing holes to achieve secondary sealing of the power module after the glue-filled colloid solidifies.

[0012] A further solution is that the first elastic sealing member adopts a silicone strip, and a double-lip sealing groove is provided on the edge contour of the silicone strip, and an interference fit is formed with the edge of the notch on the outer shell through the double-lip sealing groove; a first notch is opened at the end of the silicone strip, and the concentrated stress generated during the interference fit is dispersed through the first notch to prevent the silicone strip from curling or bursting.

[0013] A further solution is that a plurality of mounting notches are provided on the edge of the bottom shell, and a plurality of mounting holes are provided around the four sides. The mounting holes include at least a plurality of oblong holes. The oblong holes provide free expansion and contraction space for the fixed structure along the length direction when the temperature changes, so as to prevent the accumulation of thermal stress from causing deformation or cracking of the fixed structure.

[0014] A further solution is that the power module includes a power circuit board and a connection circuit board, and second welding ports are provided at corresponding positions on one side of the power circuit board and the connection circuit board, and electrical connection is achieved at the second welding ports through a welding plug.

[0015] The corresponding pins are welded to the first welding port of the control circuit board by soldering, thereby forming an electrical connection and structural fixation.

[0016] A further solution is that a plurality of mounting posts are provided on the bottom shell for fixing the mounting post mounting holes of the control circuit board; an insulating sheet is attached between the bottom shell and the control circuit board for electrically isolating the electronic components on the control circuit board from the metal parts on the bottom shell.

[0017] A further solution is to further include a knob encoder, which is electrically connected to the control circuit board and has a rotating column at its upper end for connecting to a knob panel assembly of a dimming power supply.

[0018] It also includes an inner cover, which is provided with a first through hole matching the thickness of the rotating column. The inner cover is sleeved on the bottom shell through the first through hole to achieve dustproof sealing of the control circuit board and the knob encoder.

[0019] A modular dimming power supply comprises: a power supply module of the modular structure and a knob panel assembly, wherein the power supply module and the knob panel assembly are separately arranged, and the knob panel assembly comprises a knob cap, an upper cover and an installation panel installed in sequence from top to bottom, the knob cap is installed on the installation panel through a second through hole provided on the upper cover, a third through hole is provided on the installation panel, and a docking hole is provided on the inner wall of the knob cap and is located on the same vertical axis as the second through hole. The power supply module and the knob panel assembly can be separately installed by passing the rotating column through the second through hole and then pressing it into the docking hole in a tight pressing installation manner.

[0020] A glue potting process for a modular dimming power supply, applied to the modular dimming power supply, comprises:

[0021] S1: A first elastic seal is embedded in the first notch of the bottom shell of the power module, and a lateral sealing layer is formed by pressing the first elastic seal against the surface of the external terminal of the power circuit board; and a second elastic seal is sleeved between the first shell in the power module and the first slot on the bottom shell, and a vertical sealing layer is formed by pressing the second elastic seal against the connecting circuit board.

[0022] S2: injecting glue liquid from the open end of the first shell to perform glue filling operation.

[0023] S3: After the glue filling is completed, the bottom shell cover is buckled and installed on the outer shell to achieve pre-sealing.

[0024] S4: The injected colloid is solidified and tested for defects.

[0025] S5: Use fasteners to perform secondary fixation on the bottom shell cover and the outer shell, and use a tight pressing installation method to press the rotating column of the knob encoder into the docking hole of the knob panel assembly to achieve separate installation of the power module and the knob panel assembly.

[0026] It can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The power module of the present invention adopts a multiple dynamic sealing design. A lateral sealing layer is formed by the double-lip sealing design of the U-shaped groove on the side wall, and a bottom sealing layer is formed by pressing the first shell, the long slot hole on the bottom shell and the connecting circuit board through a silicone sleeve, thereby ensuring that the glue does not overflow or seep downward during glue pouring. In addition, by pre-installing the sealing structure of the power module, the glue does not overflow during glue pouring while maintaining a safe creepage distance.

[0028] 2. The multiple modules of the present invention can be quickly disassembled and assembled, from the plug-in installation of the bottom shell cover, the L-shaped detachable connection between the circuit boards, and the use of rotating columns to tightly connect the power module and the knob panel. During maintenance, modules can be easily replaced without desoldering or violent disassembly, greatly improving maintenance efficiency.

[0029] 3. The present invention isolates external impacts through the inner shell / outer shell double-layer structure. The bottom shell cover is pre-sealed through the plug-in part and then fixed with screws for the second time, solving the problem of gap regeneration caused by thermal expansion and contraction during glue curing, and ensuring long-term sealing stability.

[0030] 4. The power module and knob panel assembly of the dimming power supply of the present invention are designed to be installed separately, which can limit the glue filling operation to the independent power module, thereby completely eliminating the possibility of colloid contamination of the panel, thereby improving the production and maintenance efficiency of the dimming power supply, and improving the product yield and reliability.

[0031] 5. The coaxial slots at the closed end of the first housing and the bottom housing of this invention form a vertical channel for directional flow of the adhesive. Through this vertical sealed channel, the adhesive flows along the designed path, precisely filling the interface area. Compared with traditional integral glue filling, this reduces adhesive waste and eliminates problems such as glue seeping into screw holes and connectors, causing functional failure.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural diagram of a power supply module according to an embodiment of a modular power supply module of the present invention.

[0034] Figure 2 This is a structural diagram of the first shell and bottom shell of an embodiment of a modular power module of the present invention.

[0035] Figure 3 This is a cross-sectional view of the first shell and bottom shell of an embodiment of a modular power module of the present invention.

[0036] Figure 4 This is a structural diagram of an inner and outer double-layer shell in an embodiment of a modular power module of the present invention.

[0037] Figure 5 It is a structural diagram of the bottom shell cover in an embodiment of a power module with a modular structure of the present invention.

[0038] Figure 6 This is a structural diagram of the bottom shell in an embodiment of a modular power module of the present invention.

[0039] Figure 7 This is a structural diagram of a U-shaped silicone strip in an embodiment of a modular power module of the present invention.

[0040] Figure 8 This is a structural diagram of a power module in an embodiment of a modular power module of the present invention.

[0041] Figure 9 This is a structural diagram of a control circuit board in an embodiment of a modular power module of the present invention.

[0042] Figure 10 This is a split structure diagram of a modular dimming power supply embodiment of the present invention.

[0043] Figure 11 This is a structural diagram of the knob panel assembly in an embodiment of a modular dimming power supply of the present invention.

[0044] Figure 12 This is a structural diagram of a knob cap in an embodiment of a modular dimming power supply of the present invention.

[0045] Figure 13 This is a flow chart of the glue filling process of a modular dimming power supply of the present invention.

[0046] The parts list in the attached figure is as follows:

[0047] 10: first shell; 11: outer shell; 12: inner shell; 13: first notch;

[0048] 20: Power module; 21: Power circuit board; 22: Connection circuit board; 23: Welding plug; 24: Second welding port; 25: Second fastener; 26: External wiring port;

[0049] 30: bottom shell cover; 31: first fastener; 32: first fixing hole; 33: fastener;

[0050] 40: bottom shell; 41: first slot; 42: oblong hole; 43: insulating sheet; 44: mounting notch;

[0051] 50: Control circuit board; 51: First welding port; 52: Knob encoder; 53: Mounting post mounting hole;

[0052] 60: first elastic sealing member; 61: double-lip sealing groove; 62: first notch;

[0053] 70: second elastic sealing member;

[0054] 80: inner cover; 81: first through hole;

[0055] 90: third elastic sealing member;

[0056] 100: power module;

[0057] 200: knob panel assembly;

[0058] 210: knob cap; 211: docking hole;

[0059] 220: Upper cover; 221: Second through hole

[0060] 230: mounting panel; 231: third through hole;

[0061] 240: Nut. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0063] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0064] See also Figure 1-3 The present invention provides a power supply module with a modular structure, including a power supply module 20 for supplying power to a dimming power supply, and also including a first shell 10. The first shell 10 is a semi-enclosed shell with an open end, and the power supply module 20 is accommodated in its cavity. A bottom shell cover 30 is provided on the open end below the first shell 10, and a bottom shell 40 is provided above the closed end opposite to the open end. A control circuit board 50 is provided above the bottom shell 40; a first notch 13 is provided on the side wall of the first shell 10, and a first elastic seal 60 is nested in the first notch 13, which forms an interference fit with the outer surface of the external wiring port 26 of the power supply module 20 through the first elastic seal 60. The closed end and the bottom shell 40 are respectively provided with a first slotted hole 41 on the same vertical axis, and the position of the first slotted hole 41 corresponds to the position of the first welding port 51 of the control circuit board 50; a second elastic seal 70 is sleeved between the closed end and the first slotted hole 41 on the bottom shell 40, and forms an interference fit with the outer surface of the second elastic seal 70. The second elastic seal 70 is a hollow structure, one end of which is communicated with the inner cavity of the first shell 10, and the other end abuts against the surface of the first welding port 51, thereby forming a vertical sealing channel for the dimming power supply module 100, and guiding the directional flow of the colloid during the glue filling operation through the vertical sealing channel.

[0065] Specifically, the external wiring port 26 of this embodiment includes two independently arranged electrical wiring terminals, which are used to maintain a safe distance of the primary electrical clearance of the power module 20. A third elastic seal 90 is provided in the gap between the two electrical wiring terminals. The third elastic seal 90 is interference fit with the surface of the electrical wiring terminal formed by the gap, so that the power module 20 is partially sealed.

[0066] Specifically, the third elastic sealing member 90 in this embodiment is a rubber sealing plug.

[0067] Specifically, in this embodiment, the first slotted hole 41 is preferably a long slotted hole. By properly designing the size and shape of the long slotted hole, stress concentration can be reduced and the hole diameter can be expanded to disperse the load pressure.

[0068] The slotted hole dimensions, combined with the elastic deformation characteristics of the second elastic seal 70, create radial or axial contact pressure, effectively filling tiny gaps and creating a continuous seal. Furthermore, the slotted hole structure allows the second elastic seal 70 to plastically deform in response to pressure fluctuations, adapting to dynamic sealing requirements. Furthermore, the rubber material used in the second elastic seal 70 provides a buffering effect against temperature and pressure fluctuations, reducing the risk of colloid leakage caused by vibration or pressure fluctuations.

[0069] See also Figure 4 In this embodiment, the first shell 10 is an inner and outer double-layer shell structure, wherein the inner shell 12 is a semi-enclosed cavity with one end open, and the outer shell 11 is coaxially sleeved on the radial outside of the inner shell 12 and completely covers the circumferential side of the inner shell 12; the side surfaces of the inner shell 12 and the outer shell 11 are respectively provided with first notches 13 in the same radial direction to form a cable channel; the bottom of the outer shell 11 is provided with a first plug-in portion for installing a bottom shell cover 30, and the bottom shell cover 30 covers the open end of the inner shell 12 to form a closed chamber.

[0070] Specifically, the coordinated design of the inner and outer shells in this embodiment allows the inner and outer shells to be made of different materials, such as the inner shell 12 is made of an insulating member and the outer shell 11 is made of a metal member, which can simultaneously meet the insulation performance, structural strength and other requirements of the power module 100.

[0071] See also Figure 5 In this embodiment, a first fastener 31 is provided on the bottom shell cover 30, and the bottom shell cover 30 is detachably connected to the outer shell 11 through the first fastener 31 to achieve pre-sealing.

[0072] Specifically, in this embodiment, a double-lip sealing groove is provided on the bottom shell cover 30 , and the groove depth of the double-lip sealing groove is matched with the lower edge of the shell 11 .

[0073] Among them, first fixing holes 32 are respectively provided at corresponding positions on the bottom of the shell 11 and the bottom shell cover 30, and corresponding fasteners 33 are used to fix through the first fixing holes 32 to achieve secondary sealing of the power module 100 after the glue-filled colloid solidifies, thereby avoiding the regeneration of gaps due to thermal expansion and contraction during the colloid solidification process.

[0074] Specifically, the design of the bottom shell cover 30 in this embodiment is only a preferred solution, not the only solution. For example, the bottom shell cover 30 and the outer shell 11 are fixed only by screws, or the bottom shell cover 30 is not provided with any fixing parts. During the glue filling operation, the bottom shell cover 30 is in close contact with the outer shell 11 through the liquid glue, and can be fixed to the outer shell 11 after the glue solidifies.

[0075] See also Figure 6 In this embodiment, a plurality of mounting notches 44 are provided on the edge of the bottom shell 40, and a plurality of mounting holes are provided around the bottom shell 40. The mounting holes include at least a plurality of oblong holes 42. The oblong holes 42 provide free expansion and contraction space for the fixed structure along the length direction when the temperature changes, so as to prevent the accumulation of thermal stress from causing deformation or cracking of the fixed structure.

[0076] Specifically, the bottom shell 40 of this embodiment has different types of mounting holes, which can meet the needs of different assembly scenarios to the greatest extent. For example, oblong holes 42 are commonly used in Europe for dimming power supply assembly.

[0077] See also Figure 7 In this embodiment, the first elastic seal 60 is a silicone strip. A double-lip sealing groove 61 is provided on the edge profile of the silicone strip, which is tightly coupled with the edge of the first notch 13 on the housing 11 through the double-lip sealing groove 61; a first notch 62 is opened at the end of the silicone strip, and the concentrated stress generated during the interference fit is dispersed through the first notch 62 to prevent the silicone strip from curling or bursting.

[0078] Specifically, the preferred solution of this embodiment is that the first notch 13 is a U-shaped groove, and the closely connected first elastic seal 60 uses a matching U-shaped silicone rubber. The U-shaped silicone rubber sealing strip has high temperature resistance from -60°C to 200°C, chemical stability against acids, alkalis and organic solvents, and elastic deformation capacity with a compression permanent deformation rate of less than 20%. Its U-shaped structural design can achieve a tight fit with a contact surface pressure of 0.15-0.3MPa, and combined with the surface hydrophobic properties, it effectively prevents medium penetration.

[0079] Among them, the edge of the U-shaped silicone strip is provided with a double-lip sealing groove 61, the groove depth of which matches the edge of the U-shaped groove of the shell 11, and combined with the hook design of the U-shaped groove of the shell 11, it can achieve IP65 sealing level dust and water resistance.

[0080] Specifically, the first notch 62 of the present embodiment is formed by cutting a right-angled notch from the end of the U-shaped silicone strip. The length of the first notch 62 is smaller than the width of the strip, which can avoid curling caused by stress concentration during assembly, and at the same time reserve a 0.5mm thermal expansion margin. Compared with the complete silicone strip that may have problems such as curling, there is no need to fix it with glue for the second time.

[0081] See also Figure 8 In this embodiment, the power module 20 includes a power circuit board 21 and a connecting circuit board 22. A second welding port 24 is provided at a corresponding position on one side of the power circuit board 21 and the connecting circuit board 22, and an electrical connection is made at the second welding port 24 through a welding plug 23.

[0082] The corresponding pins are welded to the first welding port 51 of the control circuit board 50 by welding the welding plug 23 to form an electrical connection and structural fixation.

[0083] Specifically, the power circuit board 21 of this embodiment includes a multi-layer circuit board arrangement, and the multi-layer circuit boards are layered and fixed in the vertical direction by second fasteners 25 .

[0084] Specifically, this embodiment performs encapsulation through the vertical channel formed by the first slot 41 and the second elastic seal 70, so as to achieve directional filling of the colloid without leakage, prevent silica gel from overflowing during encapsulation, and ensure a safe distance between the circuit board and the metal parts of the bottom shell 40.

[0085] Specifically, in this embodiment, mounting post mounting holes 53 are provided on the control circuit board 50 and the inner cover 80 at positions corresponding to the screw mounting posts, so as to be fixed to the bottom shell 40 by being simultaneously sleeved by the screw mounting posts.

[0086] See also Figure 2 In this embodiment, a plurality of mounting posts are provided on the bottom shell 40 for fixing the mounting post mounting holes 53 of the control circuit board 50; an insulating sheet 43 is attached between the bottom shell 40 and the control circuit board 50 for electrically isolating the electronic components on the control circuit board 50 from the metal parts on the bottom shell 40.

[0087] See also Figure 9 In this embodiment, a knob encoder 52 is also included. The knob encoder 52 is electrically connected to the control circuit board 50, and a rotating column is provided at the upper end thereof to connect to the knob panel assembly 200 of the dimming power supply.

[0088] It also includes an inner cover 80 , which has a first through hole 81 that matches the thickness of the rotating column. The inner cover 80 is sleeved on the bottom shell through the first through hole 81 to achieve dust-proof sealing of the control circuit board 50 and the knob encoder 52 .

[0089] Specifically, the power module 100 of this embodiment is used for a dimming power supply with a knob panel, which is a preferred embodiment, but not the only application scenario. For example, the power module 100 can also be used in combination with operating end modules such as a touch screen dimming power supply, a button dimming power supply, an intelligent system dimming power supply, a remote control dimming power supply, and a voice-controlled dimming power supply. By electrically connecting the operating ends of the dimming power supplies with different operating modes mentioned above to the corresponding functional pins of the control circuit board 50 in the power module 100, and fixing the operating ends on the bottom shell 40, they can be modularly combined into a variety of dimming power supplies.

[0090] Among them, the operating end modules of the above-mentioned touch screen dimming power supply, button dimming power supply, intelligent system dimming power supply, remote control dimming power supply and voice control dimming power supply are: touch screen, physical button, equipment equipped with intelligent system, remote control device and voice control device.

[0091] See also Figure 10-12 The present invention provides a modular dimming power supply, comprising the modular power supply module 100 and the knob panel assembly 200. The power supply module 100 and the knob panel assembly 200 are separately arranged, and the knob panel assembly 200 comprises a knob cap 210, an upper cover 220 and an installation panel 230 installed in sequence from top to bottom. The knob cap 210 is installed on the installation panel 230 through a second through hole 221 provided on the upper cover 220. The installation panel 230 is provided with a third through hole 231. The inner wall of the knob cap 210 is provided with a docking hole 211 which is on the same vertical axis as the second through hole 221. The size of the docking hole 211 is matched with the thickness of the rotating column. The power module 100 and the knob panel assembly 200 can be separately installed by adopting a tight pressing installation method to sequentially pass the rotating column through the first through hole 81, the third through hole 231 and the second through hole 221 and press it into the docking hole 211.

[0092] Specifically, this embodiment uses a coaxial mounting hole design of the knob device mounting panel 230 and the knob cap 210, and provides a rotating column coupled thereto at the upper end of the knob encoder 52, so that the knob encoder can be quickly installed on the mounting panel 230 and the knob cap 210 through a nut 240 in a convenient and tight installation manner, avoiding the risk of damaging the circuit board caused by traditional installation only on the circuit board, as well as the problems of complicated installation and increased cost caused by screw fixing.

[0093] See also Figure 13 The present invention provides a glue potting process for a modular dimming power supply, which is applied to the modular dimming power supply, including:

[0094] S1: The first notch 13 of the bottom shell 40 in the power module 100 is embedded in the first elastic seal 60, and a lateral sealing layer is formed by pressing the first elastic seal 60 and the external wiring port 26 of the power circuit board 21; and the second elastic seal 70 is sleeved between the first shell 10 in the power module 100 and the first slot 41 of the bottom shell 40, and a vertical sealing layer is formed by pressing the second elastic seal 70 and the connecting circuit board 22.

[0095] Specifically, the lateral sealing layer in this embodiment ensures that the glue does not overflow during glue pouring, the direction of the long slot hole is parallel to the main expansion direction of the circuit board, and a thermal deformation compensation space is reserved, and the bottom sealing layer can prevent the glue from seeping downward.

[0096] It can be seen that the present invention pre-assembles the sealing structure of the power module 100 to ensure that the glue does not overflow during the glue filling and maintains a safe creepage distance.

[0097] Specifically, this embodiment also includes a rubber material preparation and degassing process, using two-component organic silica gel accurately weighed in proportion, preheated to the target temperature, and then mechanically stirred until uniform, and then vacuum degassing to eliminate bubbles.

[0098] S2: injecting glue from the open end of the first shell 10 to perform glue filling operation.

[0099] Specifically, this embodiment adopts a stepped glue filling method for the glue filling operation, and the glue is injected from the open end at an angle of 45°. After the glue is filled to 50% of the height of the cavity for the first time, it is left to stand for a period of time to penetrate the gap, and then the glue is filled for the second time to 90% of the height, and the surface tension of the U-shaped silicone strip is used to prevent side overflow.

[0100] S3: After the glue filling is completed, the bottom shell cover 30 is buckled and installed on the outer shell 11 to achieve pre-sealing.

[0101] Specifically, in this embodiment, after the glue is poured, the bottom shell cover 30 is pre-locked with a buckle, and then the screws are tightened twice in diagonal order. The pre-sealing is used to prevent the glue from overflowing from the open end due to thermal expansion or gravity.

[0102] S4: The injected colloid is solidified and tested for defects.

[0103] Specifically, this embodiment performs step-curing according to different temperatures, such as pre-curing at 60°C±5°C for 1 hour, and then fully curing at 85°C±5°C for 2 hours.

[0104] Specifically, this embodiment is aged at room temperature for 24 hours after curing to release stress. It is then subjected to colloid defect tests such as X-ray scanning, weighing verification, and dielectric strength testing to obtain test results such as the void ratio of the colloid, the error in the amount of glue filling, and the dielectric strength. It is evaluated whether the required glue filling effect is achieved. If so, the next step is executed.

[0105] S5: The bottom shell cover 30 and the outer shell 11 are fixed for a second time by screws, and the rotating column of the knob encoder 52 is pressed into the docking hole 211 of the knob panel assembly 200 by a tight installation method, so as to realize the separate installation of the power module 100 and the knob panel assembly 200.

[0106] Specifically, in this embodiment, the knob panel assembly 200 is installed after the glue is poured, which avoids the problem that the traditional flowing glue can easily invade the panel area through the tiny gap at the junction of the control panel and the power module 20, thereby causing glue residue in the control panel. It also eliminates the possibility that the solidified glue remaining at the panel joint will form visible stains that affect the product appearance and customer experience, and the possibility that the residual glue will cause the knob shaft of the knob panel to get stuck, the transparent film of the display screen to be contaminated, and other serious functional defects. As a result, the yield and reliability of the knob panel dimming power supply product are greatly improved.

[0107] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A power supply module with a modular structure, comprising a power supply module for supplying power to a dimming power supply, characterized in that: Also includes: The first shell, the first shell is a semi-closed shell with an open end, and the power module is accommodated in its cavity, and a bottom shell cover is provided on the open end below the first shell, and a bottom shell is provided above the closed end opposite to the open end, and a control circuit board is provided above the bottom shell; a first through slot is provided on the side wall of the first shell, and a first elastic seal is nested on the first slot, which forms an interference fit with the outer surface of the external wiring port of the power module through the first elastic seal; the closed end and the bottom shell are respectively provided with a through first slot hole on the same vertical axis, and the position of the first slot hole corresponds to the position of the first welding port of the control circuit board; a second elastic seal is provided between the closed end and the first slot hole on the bottom shell, and forms an interference fit with the outer surface of the second elastic seal, and the second elastic seal is a hollow structure, one end of which is connected to the inner cavity of the first shell, and the other end abuts against the surface of the first welding port, thereby forming a vertical sealing channel for the dimming power module.

2. The modular power supply module according to claim 1, characterized in that: The first shell is a double-layer shell structure with inner and outer layers, the inner shell is a semi-enclosed cavity with one end open, and the outer shell is coaxially sleeved on the radial outside of the inner shell and completely covers the circumferential side of the inner shell; the sides of the inner shell and the outer shell are respectively provided with the first notches in the same radial direction to form a cable channel; the bottom shell cover covers the open end of the inner shell to form a closed chamber.

3. The modular power supply module according to claim 2, characterized in that: The bottom shell cover is provided with a first fastener, which is detachably connected to the outer shell through the first fastener to achieve pre-sealing of the power module; First fixing holes are also provided at corresponding positions of the bottom shell cover and the bottom of the shell, and corresponding fasteners are used to fix them through the first fixing holes to achieve secondary sealing of the power module after the potting colloid solidifies.

4. The modular power supply module according to claim 3, characterized in that: The first elastic sealing member is a silicone strip, and a double-lip sealing groove is provided on the edge profile of the silicone strip, through which an interference fit is formed with the edge of the notch on the outer shell; a first notch is provided at the end of the silicone strip, and the concentrated stress generated during the interference fit is dispersed through the first notch to prevent the silicone strip from curling or bursting.

5. The modular power supply module according to claim 1, characterized in that: The edge of the bottom shell is provided with a plurality of mounting notches, and a plurality of mounting holes are respectively provided around it. The mounting holes include at least a plurality of oblong holes. The oblong holes provide free expansion and contraction space of the fixed structure along the length direction when the temperature changes, so as to prevent the accumulation of thermal stress from causing deformation or cracking of the fixed structure.

6. The modular power supply module according to claim 1, characterized in that: The power module includes a power circuit board and a connection circuit board. The power circuit board and the connection circuit board are provided with second welding ports at corresponding positions on one side thereof, and are electrically connected at the second welding ports via a welding plug. The corresponding pins are welded to the first welding port of the control circuit board by soldering, thereby forming an electrical connection and structural fixation.

7. The modular power supply module according to claim 6, characterized in that: The bottom shell is provided with a plurality of mounting posts for fixing the mounting post mounting holes of the control circuit board; an insulating sheet is attached between the bottom shell and the control circuit board for electrically isolating the electronic components on the control circuit board from the metal parts on the bottom shell.

8. The modular power supply module according to claim 7, characterized in that: It also includes a knob encoder, which is electrically connected to the control circuit board and has a rotating column at its upper end for connecting to a knob panel assembly of a dimming power supply; It also includes an inner cover, which is provided with a first through hole matching the thickness of the rotating column. The inner cover is sleeved on the bottom shell through the first through hole to achieve dustproof sealing of the control circuit board and the knob encoder.

9. A dimming power supply with a modular structure, characterized in that: include: The power supply module and knob panel assembly of a modular structure as described in any one of claims 1-8, the power supply module and the knob panel assembly are separately arranged, the knob panel assembly includes a knob cap, an upper cover and an installation panel installed in sequence from top to bottom, the knob cap is installed on the installation panel through a second through hole provided on the upper cover, a third through hole is provided on the installation panel, and a docking hole is provided on the inner wall of the knob cap and is on the same vertical axis as the second through hole. The power module and the knob panel assembly can be installed separately by adopting a tight pressing installation method to pass the rotating column through the second through hole and then press it into the docking hole.

10. A glue-filling process for a modular dimming power supply, characterized in that: The dimming power supply with a modular structure as claimed in claim 9 comprises: S1: A first elastic seal is embedded in a first notch of a bottom shell of a power module, and the first elastic seal is pressed against the surface of an external terminal of a power circuit board to form a lateral sealing layer; a second elastic seal is sleeved between the first shell of the power module and the first slot on the bottom shell, and the second elastic seal is pressed against the connection circuit board to form a vertical sealing layer; S2: injecting glue liquid from the open end of the first shell to perform glue filling operation; S3: After the glue filling is completed, the bottom shell cover is snapped on the outer shell to achieve pre-sealing; S4: solidify the injected colloid and perform defect testing; S5: Use fasteners to perform secondary fixation on the bottom shell cover and the outer shell, and use a tight pressing installation method to press the rotating column of the knob encoder into the docking hole of the knob panel assembly to achieve separate installation of the power module and the knob panel assembly.

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