Low-thickness small-size direct-current power converter with filtering function

Abstract

The utility model discloses a low-thickness and small-size direct-current power converter with a filtering function, which comprises a shell, a cover plate, a direct-current conversion assembly, a filtering anti-interference assembly, a switching printed board and a switching power strip, and is characterized in that the switching printed board is parallel to the cover plate and is arranged between the cover plate and the direct-current conversion assembly; a plurality of contact pins of the direct current conversion assembly are respectively connected with a plurality of corresponding welding holes in the switching printed board in a welding mode, a filtering anti-interference printed board of the filtering anti-interference assembly is perpendicular to the switching printed board and is close to the direct current conversion assembly, and a plurality of L-shaped contact pins are sequentially installed on the switching power strip in the length direction of the switching power strip. One ends of the plurality of L-shaped pins are respectively connected with the plurality of corresponding welding holes on the switching printed board in a welding manner, and the other ends of the plurality of L-shaped pins are respectively connected with the plurality of corresponding welding holes on the filtering anti-interference printed board in a welding manner. According to the utility model, the thickness and the volume of the whole product are reduced, and the electrical industry development requirement of miniaturization of electronic products is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a direct current power converter, especially a low thickness and small volume direct current power converter with filtering function. BACKGROUND

[0002] The direct current power converter is also called DC-DC converter, is the circuit or electromechanical device of electric energy conversion, can convert the direct current (DC) power supply into the direct current (or approximate direct current) power supply of different voltage, its power range can be from very small (small battery) to very big (high voltage power conversion).

[0003] In order to filter power signal to meet the application requirement, usually add filter circuit in direct current power converter to make it have filtering function. The traditional direct current power converter with filtering function, because need to increase filtering function in converter front end, increase anti-interference and drop ripple function in rear end, so not only need to weld direct current conversion element on printed board, but also need to assemble and weld a large number of filter, anti-interference component in its front end and rear end, thereby lead to the whole converter to have the disadvantages of large volume, high thickness, cannot be applied in the occasion needing low thickness and small volume, and the small type of electronic product is one of the important needs of the development of electrical industry. UTILITY MODEL CONTENT

[0004] The utility model discloses a direct current power converter with filtering function, which can solve the problems of large volume and high thickness of the conventional direct current power converter.

[0005] The utility model discloses a direct current power converter with filtering function, which can solve the problems of large volume and high thickness of the conventional direct current power converter.

[0006] The low-thickness and small-volume DC power converter with filtering function comprises a shell, a cover plate, a DC conversion assembly for DC conversion, and a filtering and anti-interference assembly for front-end filtering and back-end anti-interference and ripple reduction processing. The cover plate is installed at the open end of the shell. The DC conversion assembly and the filtering and anti-interference assembly are respectively installed in the shell and electrically connected with each other. The filtering and anti-interference assembly comprises a filtering and anti-interference printed board and filtering and anti-interference elements installed on the filtering and anti-interference printed board. The low-thickness and small-volume DC power converter with filtering function further comprises a switching printed board and a switching socket strip arranged in the shell. The switching printed board is parallel to the cover plate and arranged between the cover plate and the DC conversion assembly. The plurality of pins of the DC conversion assembly are respectively welded to the plurality of corresponding welding holes on the switching printed board. The filtering and anti-interference printed board is perpendicular to the switching printed board and close to the DC conversion assembly. The switching socket strip is sequentially provided with a plurality of "L"-shaped pins along the length direction thereof. One end of the plurality of "L"-shaped pins is respectively welded to the plurality of corresponding welding holes on the switching printed board. The other end of the plurality of "L"-shaped pins is respectively welded to the plurality of corresponding welding holes on the filtering and anti-interference printed board.

[0007] Preferably, in order to improve the insulation performance, a first insulation board is arranged between the switching printed board and the DC conversion assembly, and a second insulation board is arranged between the switching printed board and the cover plate.

[0008] Preferably, in order to facilitate external connection and good grounding effect, the low-thickness and small-volume DC power converter with filtering function further comprises two grounding metal plates and two wedge-shaped locking rods. The two grounding metal plates are respectively arranged on the inner walls of the opposite sides of the shell and are connected by conductive adhesive. The two grounding metal plates are respectively in close contact with the grounding ends of the switching printed board. The closed end of the shell is provided with four power pins and one grounding pin. The four power pins respectively pass through the corresponding through holes of the two grounding metal plates and are respectively connected by insulators. The four power pins are respectively welded to the corresponding welding holes on the switching printed board. The grounding pin passes through one of the grounding metal plates and is electrically connected. The side of the grounding metal plate close to the filtering and anti-interference printed board is provided with a clamping groove. The opposite sides of the filtering and anti-interference printed board close to the edges are respectively provided with grounding metal surfaces and are respectively arranged in the clamping grooves of the two grounding metal plates. The two wedge-shaped locking rods are respectively arranged in the clamping grooves of the two grounding metal plates and make the two grounding metal surfaces of the filtering and anti-interference printed board in close contact with the groove walls of the corresponding clamping grooves.

[0009] As preferred, in order to limit the filter anti-interference printed board by the adapter socket, one side of the adapter socket is provided with an inverted "L" shaped slot and the corresponding edge of the filter anti-interference printed board is placed in the inverted "L" shaped slot.

[0010] The utility model has the advantages that:

[0011] The utility model discloses a low thickness and small volume DC power converter with filtering function, which comprises a filter anti-interference printed board, a DC conversion assembly, an adapter printed board and an adapter socket. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the three-dimensional structure schematic diagram of the low thickness and small volume DC power converter with filtering function before assembly of the utility model;

[0013] Figure 2 is the three-dimensional structure schematic diagram of the low thickness and small volume DC power converter with filtering function after partial assembly of the utility model;

[0014] Figure 3 is the three-dimensional structure schematic diagram of the low thickness and small volume DC power converter with filtering function after removing the shell, cover plate and second insulating plate of the utility model;

[0015] Figure 4 is the three-dimensional structure schematic diagram of the filter anti-interference assembly and adapter socket of the low thickness and small volume DC power converter with filtering function of the utility model;

[0016] Figure 5 is the three-dimensional structure schematic diagram of the adapter socket of the low thickness and small volume DC power converter with filtering function of the utility model;

[0017] Figure 6 is the front view structure schematic diagram of the adapter socket of the low thickness and small volume DC power converter with filtering function of the utility model;

[0018] Figure 7 is Figure 6 A-A sectional view enlarged view in the utility model. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings:

[0020] As Figures 1-7As shown in the low thickness small volume DC power converter with filtering function, the shell 19, the cover plate 1, the DC conversion assembly 7 for carrying out DC conversion and the filtering anti-interference assembly for front-end filtering and rear-end anti-interference and ripple reduction are provided, the cover plate 1 is installed at the opening end of the shell 19, the DC conversion assembly 7 and the filtering anti-interference assembly are respectively installed in the shell 19 and are electrically connected with each other, the filtering anti-interference assembly comprises the filtering anti-interference printed board 12 and the filtering anti-interference element 14 installed on the filtering anti-interference printed board 12, the low thickness small volume DC power converter with filtering function further comprises the adapter printed board 3 and the adapter plug strip 10 arranged in the shell 19, the adapter printed board 3 is parallel to the cover plate 1 and is arranged between the cover plate 1 and the DC conversion assembly 7, the plurality of pin needles 8 of the DC conversion assembly 7 are respectively welded and connected with the plurality of corresponding welding holes 4 on the adapter printed board 3, the filtering anti-interference printed board 12 is perpendicular to the adapter printed board 3 and is close to the DC conversion assembly 7, the plurality of "L" shaped pin needles 9 are sequentially installed on the adapter plug strip 10 along the length direction of the adapter plug strip 10, one end of the plurality of "L" shaped pin needles 9 is respectively welded and connected with the plurality of corresponding welding holes 4 on the adapter printed board 3, and the other end of the plurality of "L" shaped pin needles 9 is respectively welded and connected with the plurality of corresponding welding holes 13 on the filtering anti-interference printed board 12.

[0021] As Figures 1-7 shown, the utility model discloses the following more optimal specific structure:

[0022] In order to improve the insulation performance, the first insulating plate 5 is installed between the adapter printed board 3 and the DC conversion assembly 7, and the second insulating plate 2 is installed between the adapter printed board 3 and the cover plate 1.

[0023] In order to realize the external function and good grounding effect, the low thickness small volume DC power converter with filtering function further comprises two grounding metal plates 17 and wedge-shaped locking rods 11, the two grounding metal plates 17 are respectively installed on the inner walls of opposite sides of the shell 19 and are connected by conductive adhesive, the two grounding metal plates 17 are respectively in close contact with the grounding end of the adapter printed board 3, the closed end of the shell 19 is provided with four power supply pins 18 (namely one positive and one negative incoming line end pin and one positive and one negative outgoing line end pin) and one grounding pin 16, the four power supply pins 18 respectively pass through the corresponding through holes on the two grounding metal plates 17 and are connected by insulators, the four power supply pins 18 are respectively welded to the corresponding welding holes 4 on the adapter printed board 3, the grounding pin 16 passes through one of the two grounding metal plates 17 and is in electrical contact, one side of the grounding metal plate 17 close to the filtering anti-interference printed board 12 is provided with a clamping groove 15, the opposite sides of the filtering anti-interference printed board 12 close to the edges are respectively provided with grounding metal surfaces (not shown in the figure, preferably copper-clad surfaces) and are respectively placed in the clamping grooves 15 of the two grounding metal plates 17, and the two wedge-shaped locking rods 11 are respectively placed in the clamping grooves 15 of the two grounding metal plates 17 and make the two grounding metal surfaces of the filtering anti-interference printed board 12 in close contact with the groove walls of the corresponding clamping grooves 15.

[0024] In order to limit the filtering anti-interference printed board 12 by the adapter socket strip 10, one side of the adapter socket strip 10 is provided with an inverted “L” shaped groove (not marked in the figure) and the corresponding edges of the filtering anti-interference printed board 12 are placed in the inverted “L” shaped groove.

[0025] Figure 1 The “U” shaped grooves 6 provided on both ends of the first insulating plate 5 and used for the plurality of pins 8 of the DC conversion assembly 7 are also shown, which are conventional adaptive structures.

[0026] As shown in Figures 1-7 application, one positive and one negative two power supply ends of a power supply device are respectively connected with the corresponding two incoming line end power supply pins 18, the other two power supply pins 18 are used as outgoing line ends, the grounding pin 16 is connected with a grounding wire, power supply signals are sequentially filtered, DC converted, anti-interference and ripple processed and then transmitted from the outgoing line ends to power consuming devices, so that the functions of DC power voltage conversion, filtering, anti-interference and ripple reduction are realized to meet the application requirements.

[0027] The above embodiments are only preferred embodiments of the present application and are not a limitation on the technical solutions of the present application, and any technical solutions that can be realized on the basis of the above embodiments without creative labor should be considered to fall within the protection scope of the patent of the present application.

Claims

1. A low-thickness small-volume DC power converter with filtering function, comprising a shell, a cover plate, a DC conversion assembly for DC conversion, and a filtering anti-interference assembly for front-end filtering and back-end anti-interference and ripple reduction processing, the cover plate being installed at an open end of the shell, the DC conversion assembly and the filtering anti-interference assembly being respectively installed in the shell and electrically connected with each other, the filtering anti-interference assembly comprising a filtering anti-interference printed board and filtering anti-interference elements installed on the filtering anti-interference printed board, characterized in that: The low-thickness small-volume DC power converter with filtering function further comprises a transfer printed board and a transfer socket strip arranged in the shell, the transfer printed board is parallel to the cover plate and arranged between the cover plate and the DC conversion assembly, the pins of the DC conversion assembly are respectively welded to the corresponding welding holes on the transfer printed board, the filtering anti-interference printed board is perpendicular to the transfer printed board and close to the DC conversion assembly, and the transfer socket strip is sequentially provided with a plurality of "L"-shaped pins along the length direction of the transfer socket strip, one end of the "L"-shaped pins is respectively welded to the corresponding welding holes on the transfer printed board, and the other end of the "L"-shaped pins is respectively welded to the corresponding welding holes on the filtering anti-interference printed board.

2. The low profile, low height, DC power converter with filtering capability of claim 1, wherein: The first insulating plate is arranged between the transfer printed board and the DC conversion assembly, and the second insulating plate is arranged between the transfer printed board and the cover plate.

3. The low-thickness small-volume DC power converter with filtering function according to claim 1 or 2, characterized in that: The low-thickness small-volume DC power converter with filtering function further comprises two grounding metal plates and wedge-shaped locking rods, the two grounding metal plates are respectively arranged on the inner walls of the opposite sides of the shell and are connected by conductive adhesive, the two grounding metal plates are respectively in close contact with the grounding ends of the transfer printed board, the closed end of the shell is provided with four power pins and one grounding pin, the four power pins respectively pass through the corresponding through holes of the two grounding metal plates and are respectively connected by insulators, the four power pins are respectively welded to the corresponding welding holes on the transfer printed board, the grounding pin passes through one of the grounding metal plates and is in electrical contact, one side of the grounding metal plate close to the filtering anti-interference printed board is provided with a clamping groove, the opposite sides of the filtering anti-interference printed board close to the edges are respectively provided with grounding metal surfaces and are respectively arranged in the clamping grooves of the two grounding metal plates, and the two wedge-shaped locking rods are respectively arranged in the clamping grooves of the two grounding metal plates and make the two grounding metal surfaces of the filtering anti-interference printed board in close contact with the groove walls of the corresponding clamping grooves.

4. The low-thickness small-volume DC power converter with filtering function according to claim 1 or 2, characterized in that: One side of the transfer socket strip is provided with an inverted "L"-shaped groove, and the corresponding edge of the filtering anti-interference printed board is arranged in the inverted "L"-shaped groove.

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