CN214064842U - Injection molding protective shell of driving power supply - Google Patents

Abstract

Drive power supply protective housing of moulding plastics, including lower casing and last lid, the inner chamber of casing is equipped with a PCB board and protruding being equipped with passes down the bellying of PCB board, go up the lid be equipped with work as the lid with down behind the body coupling with bellying interference fit's through-hole, the casing both sides are equipped with the line portion of crossing that the power cord passed down, in this application, pass the PCB board bellying and place in the inner chamber of casing down, and the bellying plays the effect of location PCB board, and line portion is crossed to the power cord card income, covers the last lid, and the bellying passes through-hole interference fit and accomplishes the installation, and the installation does not need the screw fixation, omits partial installation process, can install fast and improve production efficiency, and lower casing and last lid are protected the PCB board after the combination, and the PC shaping external mold of moulding plastics again makes the product percent of pass high.

Description

Injection molding protective shell of driving power supply

Technical Field

The utility model relates to a lamp area field especially relates to drive power supply protective housing of moulding plastics.

Background

In the field of lighting, the LED lamp strip has the characteristics of convenience in installation, economy, easiness in water prevention and the like, and is widely used. Due to the characteristics of the using environment of the illumination of the lamp decorations, the requirements on the lighting effect, the efficiency and the like of the product are not high. Therefore, the wider scheme is adopted, the use requirement can be met by using the high-voltage LED lamp strip and the common bridge rectifier circuit, and the LED bridge rectifier circuit has the characteristics of simplicity, reliability, economy, high cost performance and the like. The product is mainly used outdoors and in public places, the volume requirement on a driving power supply is not high, but the LED is also used in batches in household illumination along with the rise of the prior no-main-lamp illumination.

In the prior art, the PCB is small and thin, and if the injection molding of PP and glass fiber is directly adopted. Because the patch diode is thin and wide, when the patch diode passes through the high temperature (170-210 ℃) of an injection molding machine and the pressure of 50MPa (500Kg), about 15 percent of the patch diode can be cracked to cause short circuit, so that the injection molded product can not be disassembled and welded with the diode again, defective products can only be scrapped and processed, manpower and material resources are wasted, and because the size of components of the product is limited, the manual plug-in process is adopted, the production benefit is low, the width of the product is influenced, the width reaches 33mm, the mounting can not be carried out in a plurality of narrow gaps, and the space and the attractiveness are also influenced even if the mounting is carried out.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned problem, this technical scheme provides drive power supply protective housing of moulding plastics, and usable casing surrounds the PCB board before moulding plastics, just can't damage PCB board or diode and cause the short circuit like this in-process of moulding plastics.

In order to achieve the purpose, the technical scheme is as follows:

drive power supply protective housing of moulding plastics, including casing and last lid down, can dismantle the connection between casing and the last lid down, can dismantle the connection and be in order to protect inside circuit components and parts when lower casing and last lid assembly are moulded plastics in PCB board periphery, the inner chamber of casing is equipped with a PCB board and protruding being equipped with and passing down the bellying of PCB board, go up the lid be equipped with as last lid with down the casing connection back with bellying interference fit's through-hole, the casing both sides are equipped with the line portion of crossing that passes for the power cord down.

In this application, pass the bellying with the PCB board and place in the inner chamber of casing down, the bellying plays the effect of location PCB board, the power cord card goes into line portion of crossing, covers the lid last at last, the bellying passes through-hole interference fit and accomplishes the installation, the installation does not need the screw fixation, omits partial installation process, can install fast and improve production efficiency, lower casing and last lid combination back protect the PCB board, the PC shaping external mold of moulding plastics again makes the product percent of pass high.

In some embodiments, an input via hole for welding a power line is formed in one side of the PCB, an output via hole for welding the power line is formed in the other side of the PCB, and a plurality of side-by-side chip diodes are disposed between the input via hole and the output via hole.

In some embodiments, a through hole for glue filling is provided on a lower end surface of the lower housing opposite to the output via hole and the input via hole.

In some embodiments, the inner cavity of the lower shell is provided with a step for jacking up the PCB.

In some embodiments, the shape of the wire passing part on both sides is consistent with the shape of the power wire.

In some embodiments, a T-shaped partition portion is convexly disposed on an inner wall of the upper cover, and partition baffles are disposed outside the partition portion and respectively located between the two input vias and between the two output vias.

The application also provides an efficient manufacturing method of the LED lamp strip power supply based on the injection molding protective shell of the driving power supply, which comprises the following steps;

A. an input power line and an output power line are respectively welded on the input via hole and the output via hole on the two sides of the PCB;

B. the PCB board is arranged in the inner cavity of the lower shell through the bulge part, and then the input power line and the output power line on the two sides are respectively clamped in the wire passing parts on the two sides;

C. the upper cover body is arranged on the lower shell, and the through hole is in interference fit with the boss to realize fixation;

D. cutting pins welded by the input through holes and the output through holes and exceeding the through holes in the through holes of the lower shell, and injecting glue for sealing;

E. and plastic is injected on the peripheries of the lower shell and the upper cover body.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a bottom view of the lower housing of an embodiment of the present invention;

FIG. 2 is a top view of the lower housing of an embodiment of the present invention;

figure 3 is a lower housing side view of an embodiment of the present invention;

fig. 4 is a schematic diagram of a PCB board structure according to an embodiment of the present invention;

fig. 5 is a top view of the upper cover according to the embodiment of the present invention;

fig. 6 is a bottom view of the upper cover body according to the embodiment of the present invention;

fig. 7 is a side view of the upper cover according to the embodiment of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-7, the injection molding protection casing for the driving power supply includes a lower casing 1 and an upper cover 2, the inner cavity of the lower casing 1 is provided with a PCB 3 and a protruding portion 4 protruding through the PCB 3, the upper cover 2 is provided with a through hole 5 in interference fit with the protruding portion 4 after the upper cover 2 and the lower casing 1 are connected, and two sides of the lower casing 1 are provided with wire passing portions 6 for a power line to pass through.

Can know from fig. 4, the PCB board both sides are provided with two round holes, pass the boss with the round hole of PCB board and place in the inner chamber of casing down, the boss plays the effect of location PCB board, line portion is crossed to the power cord card income, cover the lid on last at last, the boss passes through-hole interference fit and accomplishes the installation, the installation does not need the screw fixation, omit partial installation process, can install fast and improve production efficiency, protect the PCB board after lower casing and the combination of last lid, the PC shaping external mold of moulding plastics again, produced pressure all acts on down on casing and last lid when moulding plastics like this, can not harm the PCB board, make the product percent of pass high.

In this embodiment, 3 one side of PCB board is equipped with input via hole 7 that is used for welding power supply line, and the opposite side is equipped with output via hole 8 that is used for welding power supply line input via hole 7 with be equipped with a plurality of side by side paster diode 9 between the output via hole 8, because current high-pressure bridge rectifier power uses the encapsulation of integration 4PIN plug-in components bridge rectifier form, and single chip integration is moulded plastics in an organic whole, and when heavy current passed through, the electric current was concentrated, and the temperature also concentrates together, and the temperature rise temperature is high, can't dispel the heat. The internal temperature reaches 130 ℃, long-term work, outside plastics of moulding plastics are ageing easy to drop, cause potential safety hazard and product damage, adopt 4 paster diodes to constitute bridge rectifier circuit in this application, and electrical property parameter and single bridge rectifier circuit are equal. Because 4 patch diodes are adopted, the volume of the product circuit PCB can be controlled within the range of 10 x 50mm, the width of the product can be controlled within 18mm, the product can be installed in most of the concealed grooves, the concealed parts can not be exposed, and the appearance is attractive. Because 4 patch diodes are arranged side by side, each diode electrode is directly contacted with a PCB circuit, the heat is divided into four parts, the heat dissipation is good, and the temperature rise is low (110 ℃ MAX). The electronic components are processed by adopting the paster, so that the automation can be realized, and the cost is low.

Preferably, the upper cover body and the lower shell are made of PBT (polybutylene terephthalate) and glass fiber, and are made of high-temperature (220 ℃) resistant and impact-resistant materials, the SMD diode PCB is protected firstly, and then the SMD diode PCB is subjected to injection molding to form an outer die.

In this embodiment, the lower terminal surface of casing 1 is relative down output via hole 8 with input via hole 7 is equipped with the through hole 10 that is used for the encapsulating, and the through hole can not set up at the top, because the pressure of moulding plastics can transmit for the diode through the solidification glue after setting up the injection glue liquid at the top, damages diode and PCB board, sets up the bottom of solidifying the PCB board in order to pour into the back into at the bottom, can seal also can fix this PCB board, and can also cut off unnecessary welding pin to guarantee location and firm in the product course of working, guarantee location and pressure balance.

In this embodiment, 1 inner chamber of lower casing is equipped with and is used for with step 11 of 3 liftings of PCB board, the step can be with PCB board jack-up certain height, and the glue solution can reach rapidly and fill up the both sides of inner chamber step after the injection glue solution, fixes the PCB board, guarantees location and the fastness in the product course of working.

In this embodiment, the shapes of the wire passing positions of the wire passing parts 6 on the two sides are consistent with the shape of the power line, in order to improve the generation efficiency and enable products to adapt to different input and output wires, wire outgoing parts with the same size are arranged at the two ends of the upper cover body and the lower cover body, the shape of the inner cavity of each outgoing part is consistent with the shape of the power line, so that the front and the back do not need to be distinguished during production and processing, the input and output wires with different models can be universal, the production efficiency is improved, and the quality of the products is controlled. The fixing grooves at the two ends of the outer mold injection molding mold are precisely designed, so that the product can meet the waterproof requirement.

In this embodiment, the protruding partition portion 12 that is the T-shape that is equipped with of the inner wall of upper cover body 2, the outside of partition portion 12 is for separating the washer 13, should separate the washer 13 and be located two respectively between the input via hole 7 and two between the output via hole 8, separate the washer and be located between two input via holes, after the upper cover body installation, separate the washer and separate the positive and negative power cord of input via hole, can play the effect of safe interval and also can guarantee that the product can not the short circuit when using or moulding plastics.

The application relates to an efficient manufacturing method of an LED lamp strip power supply based on the injection molding protective shell of the driving power supply, which comprises the following steps of;

A. an input power line and an output power line are respectively welded on an input via hole 7 and an output via hole 8 at two sides of the PCB 3;

B. the PCB 3 is arranged in the inner cavity of the lower shell 1 through the bulge 4, and then the input power line and the output power line on the two sides are respectively clamped in the wire passing parts 6 on the two sides;

C. the upper cover body 2 is arranged on the lower shell body 1, and the through hole 5 is in interference fit with the boss 4 to realize fixation;

D. cutting pins welded by the input via 7 and the output via 8 and exceeding the through hole 10 from the through hole 10 of the lower shell 1, and injecting glue for sealing;

E. plastic is injection molded around the outer peripheries of the lower case 1 and the upper lid 2.

The round hole and the bellying of manufacturing approach accessible PCB board that this application provided are fixed a position fast, along with being about to go up lid and lower casing interference fit fixed mounting, the installation does not need the screw fixation, omit partial installation process, can high efficiency produce, and pour into the glue solution from the through hole and seal and firm, so protect the PCB board after casing and last lid combination down, the PC shaping external mold of moulding plastics again, produced pressure all acts on casing and last lid down when moulding plastics like this, can not harm the PCB board, make the product qualification rate high, can reach the effect of high efficiency and high yields, whole product does not have the screw fixation, and can reach waterproof requirement, it is more convenient to install, time saving and labor saving. The product design is accurate reasonable, and little volume high power integrates the height, and the compatibility is strong, and is suitable for the convenience.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the scope of the present application, which is within the scope of the present application, except that the same or similar principles and basic structures as the present application may be used.

Claims (7)

1. Drive power supply protective housing of moulding plastics, its characterized in that: including casing (1) and last lid (2) down, the inner chamber of casing (1) is equipped with a PCB board (3) down, casing (1) down with can dismantle the connection with the cladding between last lid (2) mould plastics behind PCB board (3).

2. The injection molding protective shell of the driving power supply of claim 1, wherein: the lower casing (1) is convexly provided with a boss (4) which penetrates through the PCB (3), the upper cover body (2) is provided with a through hole (5) which is in interference fit with the boss (4) after the upper cover body (2) is connected with the lower casing (1), and the two sides of the lower casing (1) are provided with wire passing parts (6) which are used for a power line to penetrate through.

3. The injection molding protective shell of the driving power supply of claim 1, wherein: PCB board (3) one side is equipped with input via hole (7) that are used for the welding power cord, and the opposite side is equipped with output via hole (8) that are used for the welding power cord input via hole (7) with be equipped with a plurality of paster diode (9) side by side between output via hole (8).

4. The injection molding protective shell of the driving power supply of claim 3, wherein: the lower end face of the lower shell (1) is provided with a through hole (10) for glue filling relative to the output through hole (8) and the input through hole (7).

5. The injection molding protective shell of the driving power supply of claim 1, wherein: the inner cavity of the lower shell (1) is provided with a step (11) used for jacking up the PCB (3).

6. The injection molding protective shell of the driving power supply of claim 2, wherein: the shapes of the wire passing positions of the wire passing parts (6) on the two sides are consistent with the shape of the power line.

7. The injection molding protective shell of the driving power supply of claim 3, wherein: the inner wall of the upper cover body (2) is convexly provided with a T-shaped separating part (12), the outer side of the separating part (12) is provided with a separating baffle sheet (13), and the separating baffle sheet (13) is respectively positioned between the two input through holes (7) and between the two output through holes (8).

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