CN215500008U

CN215500008U - DC-to-DC power module capable of preventing cold solder joint

Info

Publication number: CN215500008U
Application number: CN202122057714.4U
Authority: CN
Inventors: 张峻浩
Original assignee: Guangzhou Dingyuan Electronic Technology Co ltd
Current assignee: Guangzhou Dingyuan Electronic Technology Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-01-11
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses a DC-to-DC power supply module capable of preventing cold solder joint, and relates to the technical field of electronic engineering. The power module protection device comprises a protection shell, a power module main body and a top cover, wherein protection grooves are formed in two ends of the upper side of the protection shell, the power module main body is inserted into the protection shell, insertion pins are fixedly welded to two sides of the power module main body, the top cover is fixedly clamped at the upper end of the protection shell, and positioning blocks are fixedly arranged on two sides of the bottom end of the top cover. According to the utility model, through the protective shell, the power module main body and the top cover, the problems that the conventional DC-DC power module has high false soldering probability due to the fact that pins are prone to unevenness, has poor stability on the surface of a printed board, is easy to loosen after being used for a long time, causes poor contact of a circuit, does not have a protection device in the process of transportation and storage, is possibly damaged due to collision, and is possibly affected by damp and oxidized pins due to humid environment, so that the welding and the normal use of electronic equipment are influenced are solved.

Description

DC-to-DC power module capable of preventing cold solder joint

Technical Field

The utility model belongs to the technical field of electronic engineering, and particularly relates to a Direct Current (DC) to Direct Current (DC) power module for preventing cold joint.

Background

The DC-to-DC power supply module is a power supply device which can be directly attached to a printed circuit board and is characterized in that the power supply device can provide power for an application-specific integrated circuit, a digital signal processor, a microprocessor, a memory, a field programmable gate array and other digital or analog loads, generally speaking, the module is called a load point power supply system or a use point power supply system, and the DC-to-DC power supply module has small volume; the reliability is high; outputting the stabilized voltage; the cost performance is high; various input and output voltages; an input filter is arranged inside; low electromagnetic compatibility characteristics; the DC-DC power module is usually composed of a main body and pins, the pins are the wiring led out from an internal circuit of an integrated circuit (chip) and connected with a peripheral circuit, all the pins form an interface of the chip, and in the process of installing the DC-DC power module on the circuit, a welding machine is usually needed to weld metal materials such as soft soldering and the like between the tail end of the pin and a bonding pad on a printed board to form a welding spot together, so that the DC-DC power module is connected with the circuit to achieve the purpose of boosting or reducing the voltage in the circuit, but the DC-DC power module still has the following defects in actual use:

1. in the welding process of the conventional DC-DC power supply module, due to the fact that the tail end of a pin is not flat and a certain angle exists between the tail end of the pin and a printed board, a cold joint condition possibly exists in the welding process, meanwhile, the stability of the DC-DC power supply module at the upper end of the printed board is poor, welding spots can fall off after long-time use, the contact of the DC-DC power supply module is poor, the normal use of electronic equipment is affected, and even a circuit can be burnt out due to short circuit;

2. the existing DC-DC power supply module does not have a protection device in the process of storage and transportation, the damage of electronic elements inside the DC-DC power supply module can be caused by collision, the service life of the DC-DC power supply module is shortened, and in the process of transportation and storage, the pin surface can be affected with damp and oxidized due to environmental moisture, so that the condition of insufficient soldering of the pin in welding can be caused, and the quality of the DC-DC power supply module is reduced.

Therefore, the existing DC-to-DC power module for preventing cold solder joint cannot meet the requirement in practical use, so that an improved technology is urgently needed in the market to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a DC-to-DC power supply module capable of preventing cold joint, which solves the problems that the existing DC-to-DC power supply module has high cold joint probability due to the fact that pins are prone to be uneven, the stability of the surface of a printed board is poor, the existing DC-to-DC power supply module is prone to loosening after long-time use to cause poor contact of a circuit, the DC-to-DC power supply module does not have a protection device in the transportation and storage processes, the damage is possibly caused by collision, and the pins are likely to be affected by damp and oxidized due to the fact that the environment is wet to affect the welding and the normal use of electronic equipment through a protection shell, a power supply module main body and a top cover.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a DC-to-DC power supply module capable of preventing cold joint, which comprises a protective shell, a power supply module main body and a top cover, wherein protective grooves are formed at two ends of the upper side of the protective shell, the power supply module main body can be protected through the protective shell, the power supply module main body is prevented from being damaged due to shaking in the processes of storage and transportation, short pipe pins at two ends of the power supply module main body can be positioned and protected through the protective grooves, cold joint easily caused by collision and deformation of the short pipe pins is avoided, the power supply module main body is inserted into the inner side of the protective shell, inserting pins are welded and fixed at two sides of the power supply module main body, the inserting pins can be inserted into the inner side of a bonding pad on the surface of a printed board for fixing, the increase of the probability of cold joint caused by uneven short pipe pins is avoided, the stability of the power supply module main body on the upper side of the printed board is improved, and the service life of the power supply module main body is prolonged, the upper end of the protective shell is fixedly connected with the top cover in a clamping mode, the two sides of the bottom end of the top cover are fixedly provided with the positioning blocks, the upper side of the power module main body can be protected through the top cover, the damage to the power module main body caused by shaking is avoided, the service life of the short tube pin fixing device is prolonged, the upper side of the short tube pin can be extruded and fixed through the positioning blocks, the probability that the short tube pin deforms due to extrusion shaking in the transportation and storage processes is reduced, the flatness of the tail end of the short tube pin is guaranteed, and the welding efficiency is improved.

Furthermore, a lower fixing groove is formed in the center of the upper side of the protective shell, a shock pad is fixedly bonded to the bottom end of the inner side of the lower fixing groove, clamping grooves are formed in two ends of the upper side of the protective shell, pressing ports are formed in two sides of the protective shell, the clamping grooves and the pressing ports are communicated in a penetrating mode, the bottom end of the power module main body can be fixedly connected in an inserting mode through the lower fixing groove, damage caused by shaking in transportation and storage is avoided, stress can be released when the protective shell is collided through the shock pad, damage to electronic elements inside the power module main body due to stress is avoided, the service life of the protective shell is prolonged, a top cover can be fixed to the upper side of the protective shell in a clamping mode through the clamping grooves, the power module main body on the inner side is protected, metal parts of the power module main body are prevented from being affected with damp and oxidized, and deformation caused by scratches and collision on the surface of the power module is avoided.

Further, the protection groove is located between the lower fixing groove and the clamping groove of the protection shell, a slot is formed in the bottom end of the inner side of the protection groove, a damping ring is fixedly bonded in the slot, positioning protection can be conducted on two ends of the power module main body through the protection groove, the situation that the power module main body is shaken in the protection shell to cause deformation is avoided, the insertion pins can be fixedly inserted through the slot and the damping ring, meanwhile, the damping protection is conducted, the damage deformation of the power module main body is avoided, and the service life of the power module main body is prolonged.

Furthermore, short pins are welded and fixed on two sides of the power module main body, the plug pins are welded at the bottom ends of the short pins, the power module main body is inserted into the inner side of the lower fixing groove of the protective shell, the short pipe pin is inserted into the inner side of the protective groove, the insertion pin is inserted into the inner side of the damping ring of the protective shell, the stability of the power module main body on the upper side of the printed board can be improved by inserting the inserting pins into the inner side of the bonding pads, the loosening of the power module main body caused by poor stability after long-time use is avoided, the short pins are jointed on the upper side of the bonding pad to connect the circuit, the inserting pins can ensure the short pins and the bonding pad to be stably jointed, the probability of false welding caused by the uneven tail end of the short pins is reduced, the high-quality product rate of the power module main body is improved, can protect the short pipe foot when transportation and storage through the protection groove, reduce the probability that leads to the terminal unevenness of short pipe foot owing to colliding with.

Furthermore, clamping plates are fixed on two sides of the bottom end of the top cover, an upper fixing groove is formed in the bottom end of the top cover, the positioning block is located between the clamping plates and the upper fixing groove, the top cover can be clamped and fixed on the upper side of the protective shell through the clamping plates, the power supply module main body is protected through the upper fixing groove, the upper side of the short pipe pin is extruded and fixed through the clamping plates, the stability of the power supply module main body on the inner side of the short pipe pin fixing device is guaranteed, the short pipe pin can be always kept in a flat state on the inner side of the short pipe pin fixing device, the short pipe pin with uneven tail ends can be corrected at the same time, the later-period welding efficiency is improved, and the false welding probability is reduced.

Further, the top cap is fixed in the protective housing upside through the cardboard joint, the cardboard joint is inboard in the draw-in groove of protective housing, the last fixed slot of top cap is laminated in power module main part upside, the locating piece is laminated in the nozzle stub foot upside of power module main part, and top cap and protective housing can avoid power module main part because wet and lead to the surface to produce the oxide and influence subsequent welding, can make the top cap break away from the protective housing upside fast through pressing down the cardboard, open and close the convenience.

The utility model has the following beneficial effects:

1. the utility model solves the problems that the prior DC-DC power supply module is likely to have insufficient soldering in the welding process due to the fact that the tail end of the pin is not flat and a certain angle exists between the tail end of the pin and the printed board in the welding process, and the stability of the DC-DC power supply module at the upper end of the printed board is poor, welding spots can fall off after long-time use to cause poor contact of the DC-DC power supply module, the normal use of electronic equipment is influenced, and even the circuit is likely to be burnt out due to short circuit by arranging the power supply module main body, the stability of the power supply module main body at the upper side of the printed board can be greatly improved by inserting the inserting pins into the inner side of the welding plate, the loosening after long-time use is avoided, the inserting pins can be simultaneously connected with the welding plate, the connection efficiency of the power supply module main body and the printed board is ensured, and the short pin can be corrected, and the probability of insufficient soldering is reduced.

2. The utility model solves the problems that the prior DC-DC power supply module has no protection device in the process of storage and transportation, electronic elements in the DC-DC power supply module are damaged due to collision, the service life of the DC-DC power supply module is shortened, the pin surface is affected with damp and oxidized due to environmental humidity in the process of transportation and storage, and the condition of insufficient soldering is caused in the welding process of the pin, the quality of the DC-DC power supply module is reduced, the power supply module main body can be protected by the protection shell and the top cover, the damage caused by collision is avoided, the poor contact caused by oxidation of the short pin and the plugging pin due to damp is avoided, meanwhile, the short pin can be extruded and fixed by the protection groove and the positioning block, and the increase of the insufficient soldering probability caused by deformation in the process of transportation is avoided, meanwhile, the uneven short pins can be corrected, so that the inner sides of the power module are kept flat, and the quality of the power module main body is improved.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a structural effect diagram of the present invention;

FIG. 2 is a block diagram of the protective case of the present invention;

fig. 3 is a cross-sectional view of the protective case of the present invention;

FIG. 4 is a block diagram of the power module body of the present invention;

fig. 5 is a structural view of the top cover of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a protective shell; 101. a lower fixing groove; 102. a card slot; 103. a protective groove; 104. a pressing port; 105. a shock pad; 106. a slot; 107. a shock-absorbing ring; 2. a power module body; 201. short pins; 202. inserting pins; 3. a top cover; 301. clamping a plate; 302. an upper fixing groove; 303. and (5) positioning the blocks.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-5, the utility model is a DC-to-DC power module for preventing cold joint, comprising a protective case 1, a power module main body 2 and a top cover 3, wherein two ends of the upper side of the protective case 1 are provided with protective grooves 103, the power module main body 2 can be protected by the protective case 1, damage to the power module main body 2 caused by shaking during storage and transportation can be avoided, short pins 201 at two ends of the power module main body 2 can be positioned and protected by the protective grooves 103, cold joint easily caused by collision and deformation of the short pins 201 can be avoided, the power module main body 2 is inserted into the inner side of the protective case 1, insertion pins 202 are fixed to two sides of the power module main body 2 by welding, the insertion pins 202 can be inserted into the inner side of a bonding pad on the surface of a printed board for fixing, increase of cold joint probability caused by uneven short pins 201 can be avoided, and stability of the power module main body 2 on the upper side of the printed board can be improved, the joint of 1 upper end of protective housing is fixed with

top cap

3, 3 bottom both sides of top cap are fixed with locating piece 303, can protect 2 upsides of power module main part through top cap 3, avoid owing to rock the damage that leads to power module main part 2, can extrude fixedly to short pipe foot 201 upside through locating piece 303, reduce short pipe foot 201 and rock the probability that leads to the deformation owing to the extrusion when transportation and storage, guarantee the terminal roughness of short pipe foot 201.

As shown in fig. 1-3, a lower fixing groove 101 is formed in the center of the upper side of the protective shell 1, a shock pad 105 is fixedly bonded to the bottom end of the inner side of the lower fixing groove 101, clamping grooves 102 are formed in the two ends of the upper side of the protective shell 1, pressing ports 104 are formed in the two sides of the protective shell 1, the clamping grooves 102 are communicated with the pressing ports 104 in a penetrating manner, a protection groove 103 is formed between the lower fixing groove 101 and the clamping grooves 102 of the protective shell 1, a slot 106 is formed in the bottom end of the inner side of the protection groove 103, a shock absorbing ring 107 is fixedly bonded in the slot 106, the bottom end of the power module main body 2 can be fixedly connected through the lower fixing groove 101 in an inserting manner, damage caused by shaking in transportation and storage can be avoided, stress can be released when the shock absorbing pad 105 is collided, damage to electronic elements inside the power module main body 2 caused by stress can be avoided, the top cover 3 can be fixed to the upper side of the protective shell 1 in a clamping manner through the clamping grooves 102, protect inboard power module main part 2, avoid its metal part to wet the oxidation, avoid its surface to produce the mar and collide with the deformation that leads to, can carry out location protection to power module main part 2 both ends through protection groove 103, avoid its rocking in protecting sheathing 1 to lead to warping, can peg graft fixedly through slot 106 and shock attenuation ring 107 to grafting pin 202, carry out shock attenuation protection simultaneously and avoid its damage to warp.

As shown in fig. 1 and 4, short pins 201 are welded and fixed on two sides of a power module main body 2, an insertion pin 202 is welded at the bottom end of the short pin 201, the power module main body 2 is inserted into the inner side of a lower fixing groove 101 of a protective shell 1, the short pin 201 is inserted into a protective groove 103, the insertion pin 202 is inserted into the inner side of a damping ring 107 of the protective shell 1, the insertion pin 202 is inserted into the inner side of a pad to improve the stability of the power module main body 2 on the upper side of a printed board, the power module main body 2 is prevented from being loosened due to poor stability after long-time use, the short pin 201 is attached to the upper side of the pad to connect a circuit, the insertion pin 202 can ensure the stable attachment of the short pin 201 and the pad, the probability of false welding caused by the uneven tail end of the short pin 201 is reduced, and the short pin 201 can be protected during transportation and storage through the protective groove 103, the probability of unevenness of the tail end of the short pin 201 caused by collision is reduced.

As shown in fig. 1 and 5, two sides of the bottom end of the top cover 3 are fixed with clamping plates 301, the bottom end of the top cover 3 is provided with an upper fixing groove 302, a positioning block 303 is positioned between the clamping plates 301 and the upper fixing groove 302, the top cover 3 is fixed on the upper side of the protective casing 1 through the clamping plates 301, the clamping plates 301 are clamped on the inner side of the clamping grooves 102 of the protective casing 1, the upper fixing groove 302 of the top cover 3 is attached on the upper side of the power module main body 2, the positioning block 303 is attached on the upper side of the short tube pins 201 of the power module main body 2, the top cover 3 can be clamped and fixed on the upper side of the protective casing 1 through the clamping plates 301, the power module main body 2 is protected through the upper fixing groove 302, the clamping plates 301 can extrude and fix the upper side of the short tube pins 201, the stability of the power module main body 2 on the inner side of the utility model is ensured, the short tube pins 201 can be kept in a flat state on the inner side of the utility model all the time, and the short tube pins 201 with uneven tail end can be corrected at the same time, reduce the rosin joint probability, top cap 3 and protective housing 1 can avoid power module main part 2 to influence subsequent welding because the surface produces the oxide owing to weing, can make top cap 3 break away from protective housing 1 upside fast through pressing cardboard 301 that the pressure port 104 is inboard.

One specific application of this embodiment is: inserting a produced power module main body 2 into the inner side of a lower fixing groove 101, inserting an inserting pin 202 into the inner side of a damping ring 107 for damping protection to avoid damage in the storage and transportation process, inserting a short pin 201 into the inner side of a protection groove 103 for positioning protection, clamping a top cover 3 into the inner side of a clamping groove 102 through a clamping plate 301, attaching an upper fixing groove 302 to the upper side of the power module main body 2 to ensure the stability of the power module main body 2 at the inner side of the utility model and avoid damage caused by shaking, pressing a positioning block 303 on the upper side of the short pin 201 to correct the tail end of the short pin 201 to keep the tail end smooth, avoiding the increase of false welding probability caused by the uneven tail end during welding, fixing the position of the short pin 201 at the inner side of the utility model through the protection groove 103 and the positioning block 303 to avoid deformation and damage caused by shaking, and protecting the surface of the power module main body 2 through a protection shell 1 and a top cover 3, the short pin 201 and the plug pin 202 are prevented from generating an oxide layer due to wetting, the problem of poor contact after welding due to the oxide layer is avoided, the high-quality product rate of the utility model is improved, the shock absorption pad 105 can release stress when the short pin 201 and the plug pin 202 are collided, the service life of the power module main body 2 is prolonged, when the power module is required to be used, the top cover 3 can be separated from the upper side of the protective shell 1 by pressing the clamping plate 301 on the inner side of the pressing opening 104, the power module is convenient to open and close, the plug pin 202 of the power module main body 2 is plugged into the inner side of the pad, the stability of the power module main body 2 at the upper end of a printed board can be greatly improved, the power module main body 2 is prevented from loosening after long-time use, meanwhile, the plug pin 202 can enable the power module main body 2 and the pad to be stably connected, and the probability of false welding due to the fact that the short pin 201 is uneven is greatly reduced.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.

Claims

1. The utility model provides a prevent DC of rosin joint changes DC power module, includes protective housing (1), power module main part (2) and top cap (3), its characterized in that: protection groove (103) have been seted up at protective housing (1) upside both ends, protective housing (1) inboard is pegged graft and is had power module main part (2), power module main part (2) both sides welded fastening has grafting pin (202), protective housing (1) upper end joint is fixed with top cap (3), top cap (3) bottom both sides are fixed with locating piece (303).

2. The DC-to-DC power supply module for preventing cold joint as claimed in claim 1, wherein a lower fixing groove (101) is formed in the center of the upper side of the protection casing (1), a shock absorbing pad (105) is fixed to the bottom end of the inner side of the lower fixing groove (101) in an adhering manner, clamping grooves (102) are formed at two ends of the upper side of the protection casing (1), pressing ports (104) are formed at two sides of the protection casing (1), and the clamping grooves (102) and the pressing ports (104) are communicated with each other in a penetrating manner.

3. The DC-to-DC power supply module for preventing cold joint as claimed in claim 1, wherein the protection groove (103) is located between a lower fixing groove (101) and a clamping groove (102) of a protective shell (1), a slot (106) is formed at the bottom end of the inner side of the protection groove (103), and a damping ring (107) is adhesively fixed in the slot (106).

4. The DC-to-DC power supply module for preventing cold joint as claimed in claim 1, wherein short pins (201) are welded and fixed on two sides of the power supply module body (2), the plug pins (202) are welded at the bottom ends of the short pins (201), the power supply module body (2) is plugged inside a lower fixing groove (101) of the protective shell (1), the short pins (201) are plugged inside a protective groove (103), and the plug pins (202) are plugged inside a damping ring (107) of the protective shell (1).

5. The DC-to-DC power supply module for preventing cold joint as claimed in claim 1, wherein clamping plates (301) are fixed to two sides of the bottom end of the top cover (3), an upper fixing groove (302) is formed in the bottom end of the top cover (3), and the positioning block (303) is located between the clamping plates (301) and the upper fixing groove (302).

6. The DC-DC power supply module for preventing cold joint as claimed in claim 1, wherein the top cover (3) is fixed on the upper side of the protective casing (1) by a clamping plate (301), the clamping plate (301) is clamped inside the clamping groove (102) of the protective casing (1), the upper fixing groove (302) of the top cover (3) is attached to the upper side of the power supply module main body (2), and the positioning block (303) is attached to the upper side of the short pin (201) of the power supply module main body (2).