CN211151797U

CN211151797U - DCDC voltage converter

Info

Publication number: CN211151797U
Application number: CN201922242825.5U
Authority: CN
Inventors: 陈可璜; 邵志勇; 胡兆利
Original assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Current assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-07-31
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a DCDC voltage converter, which comprises an upper shell, a PCB board, a lower shell and a plurality of studs for leading in and leading out a power supply, wherein the upper shell is connected with the lower shell up and down, and the PCB board is arranged in a cavity enclosed by the upper shell and the lower shell; one end of each stud is matched with the lower shell respectively to form a rotation stopping structure, the other end of each stud penetrates through the PCB and the upper shell respectively and is in threaded connection with a nut, each stud is in electrical contact with the PCB respectively, and a waterproof rubber pad is matched between each stud and the upper shell respectively. The utility model discloses a it replaces exerted fixed bolster to fix each double-screw bolt to only change the structure, adopts waterproof cushion to replace the casting glue to seal the clearance between double-screw bolt and the epitheca, and assembly process is simple, and can not influence the wholeness and the aesthetic property of product.

Description

DCDC voltage converter

Technical Field

The present invention relates to a voltage converter, and more particularly to a DCDC voltage converter.

Background

At present, the existing DCDC voltage converter adopts three studs to lead in and out a power supply, and the studs are fixed by adopting the following structure: arranging a plastic fixing support, fixing the fixing support outside a shell of the DCDC voltage converter, embedding a metal plate on the fixing support, and electrically connecting the metal plate with an internal PCB (printed Circuit Board); the stud is fixed on the fixed support and is electrically connected with the metal plate, and the fixed support and the shell are sealed and sealed by pouring sealant for water prevention. The process of the structure is complex, the pouring sealant needs to be baked at high temperature, and the fixing frame is exposed outside the shell, which affects the integrity and the aesthetic property of the product,

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem that prior art exists, provide one kind and adopt simple structure can realize the fixed and waterproof DCDC voltage converter of double-screw bolt.

The utility model provides a technical scheme that its technical problem adopted is: a DCDC voltage converter comprises an upper shell, a PCB, a lower shell and a plurality of studs for leading in and leading out a power supply, wherein the upper shell and the lower shell are connected up and down; one end of each stud is matched with the lower shell respectively to form a rotation stopping structure, the other end of each stud penetrates through the PCB and the upper shell respectively and is in threaded connection with a nut, each stud is in electrical contact with the PCB respectively, and a waterproof rubber pad is matched between each stud and the upper shell respectively.

Furthermore, the rotation stopping structure comprises a non-circular rotation stopping bushing and a non-circular boss arranged at one end of the stud, and the rotation stopping bushing is positioned on the lower shell and is sleeved with the boss of the stud.

Furthermore, the number of the rotation stopping bushings is a plurality, and the rotation stopping bushings are in one-to-one correspondence with the studs; the rotation stopping bushings are arranged on a first positioning plate, and the first positioning plate is positioned on the lower shell; and each stud is electrically contacted with a copper foil area arranged on the periphery of the first through hole for the stud to pass through on the PCB through the boss of each stud.

Furthermore, a positioning groove is formed in the top surface of the lower shell, and the first positioning plate is embedded into the positioning groove; and/or the rotation stopping bushes and the first positioning plate are integrally formed.

Furthermore, the number of the waterproof rubber mats is a plurality, and the waterproof rubber mats correspond to the studs one by one; the upper shell is provided with a plurality of second through holes which correspond to the studs one to one, and the waterproof rubber pads are respectively matched between the corresponding studs and the second through holes and are in interference fit with the corresponding studs and the second through holes.

Furthermore, the plurality of waterproof rubber pads are arranged on a second positioning plate, the second positioning plate is positioned on the inner side of the upper shell, and the plurality of waterproof rubber pads are respectively sleeved into the plurality of through holes one by one in an upward manner.

Furthermore, the waterproof rubber pads and the second positioning plate are integrally formed.

The isolating frame is fixed outside the upper shell and provided with a plurality of isolating grooves in one-to-one correspondence with the studs, the other ends of the studs respectively penetrate through the isolating frame upwards to enter the corresponding isolating grooves, and nuts on the other ends of the studs are respectively positioned in the corresponding isolating grooves.

Furthermore, the isolation frame is provided with a plurality of mounting lugs, and each mounting lug is locked with the upper shell by a screw respectively.

Furthermore, epitheca, inferior valve are the metal material, spline bush, waterproof cushion are insulating material.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. because each double-screw bolt one end has the structure of splines with the inferior valve cooperation respectively, the PCB board and epitheca are passed respectively to each double-screw bolt other end to threaded connection has the nut, and each double-screw bolt respectively with PCB board electric contact, each double-screw bolt respectively and the epitheca between the cooperation have waterproof cushion, make the utility model discloses a structure of splines can replace exerted fixed bolster to fix each double-screw bolt, adopts waterproof cushion can replace the casting glue to seal the clearance between double-screw bolt and the epitheca promptly, thereby reaches assembly process simple, does not influence the wholeness of product and aesthetic property's effect.

2. The rotation stopping structure preferably comprises the non-circular rotation stopping bushing and a non-circular boss part arranged at one end of the stud, and the structure is particularly simple and convenient to assemble.

3. The rotation stopping bushings are arranged on the top surface of the first positioning plate, the positioning grooves can be formed under the first positioning plate, so that the rotation stopping bushings are very simple to position and convenient to operate, and the rotation stopping bushings are prevented from being scattered and easily lost before assembly.

4. The waterproof rubber mats are arranged on the second positioning plate, the second positioning plate is located on the inner side of the upper shell, the second positioning plate can be used for positioning the waterproof rubber mats, the waterproof rubber mats are prevented from falling off accidentally, and the waterproof rubber mats are prevented from being scattered and easily lost before being assembled.

5. The isolation frame can isolate the studs, so that mutual interference of wire harnesses connected to the studs is avoided, short circuit is prevented, the wire harnesses are limited, the wire harnesses are prevented from swinging due to vibration in the using process, and the wire harnesses are prevented from swinging for a long time to cause looseness.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiments.

Drawings

FIG. 1 is an exploded schematic view of the present invention;

fig. 2 is a schematic perspective view (partially shown) of the present invention;

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

Detailed Description

In an embodiment, please refer to fig. 1 to fig. 3, a DCDC voltage converter of the present invention includes an upper casing 1, a PCB 2, a lower casing 3, and a plurality of studs 4 for leading in and leading out a power source, wherein the upper casing 1 is connected to the lower casing 3 up and down, and the PCB 2 is disposed in a cavity enclosed by the upper casing 1 and the lower casing 3; one end of each stud 4 is respectively matched with the lower shell 3 to form a rotation stopping structure, the other end of each stud 4 respectively upwards penetrates through the PCB 2 and the upper shell 1 in sequence, the other end of each stud 4 is connected with a nut 5 in a threaded manner, each stud 4 is respectively in electrical contact with the PCB 2, and a waterproof rubber pad 6 is matched between each stud 4 and the upper shell 1.

In this embodiment, the rotation stopping structure includes a non-circular rotation stopping bush 7 and a non-circular boss 41 disposed at one end of the stud 4, and the rotation stopping bush 7 is positioned on the lower shell 3 and is sleeved with the boss 41 of the stud 4. The rotation-stopping bush 7 and the boss 41 of the stud 4 are polygonal, specifically, regular hexagonal, but not limited thereto. The stud 4 and its boss 41 may be implemented by a bolt with a non-circular head. Each stud 4 is electrically contacted with a copper foil area (not shown in the figure) arranged on the periphery of a first through hole for the stud to pass through on the PCB 2 through a boss 41 of the stud. Specifically, when the stud 4 is locked by the nut 5, the stud 4 is pulled up (within the height range of the rotation stopping bush 7), so that the top surface of the boss 41 of the stud contacts with the copper foil area arranged on the periphery of the bottom end of the first through hole for the stud to pass through on the PCB 2, thereby realizing the electrical matching between the stud and the PCB.

In this embodiment, the number of the rotation stopping bushes 7 is several, and the rotation stopping bushes 7 correspond to the studs 4 one by one; the rotation preventing bushes 7 are disposed on a first positioning plate 71, and the rotation preventing bushes 7 are integrally formed with the first positioning plate 71, but not limited thereto. The first positioning plate 71 is positioned on the lower shell 3, specifically, a positioning groove 31 is formed in the top surface of the lower shell 3, and the first positioning plate 71 is embedded in the positioning groove 31.

In this embodiment, the number of the waterproof rubber mats 6 is several, and the waterproof rubber mats 6 correspond to the studs 4 one by one; the upper shell 1 is provided with a plurality of second through holes 11 which correspond to the studs 4 one to one, and the waterproof rubber pads 6 are respectively matched between the corresponding studs 4 and the second through holes 11 and are in interference fit with the corresponding studs 4 and the second through holes 11.

In this embodiment, the plurality of waterproof rubber pads 6 are disposed on a second positioning plate 61, and specifically, the plurality of waterproof rubber pads 6 and the second positioning plate 61 are integrally formed, but not limited thereto. The second positioning plate 61 is located on the inner side of the upper shell 1, and the plurality of waterproof rubber mats 6 are respectively sleeved into the plurality of through holes 11 one by one.

In this embodiment, the utility model discloses it is right still including being used for the isolation frame 8 that keeps apart between a plurality of double-screw bolts 4, this isolation frame 8 is fixed outside epitheca 1, specifically, this isolation frame 8 is equipped with a plurality of installation lugs 81, each installation lug 81 respectively with screw 9 with epitheca 1 locking. The isolation frame 8 is provided with a plurality of isolation grooves 82 corresponding to the studs 4 one by one, and one side of each isolation groove 82 close to the edge of the upper shell 1 is respectively provided with an opening for a wire harness connected with the studs 4 to pass through. The other end of each stud 4 respectively penetrates through the isolation frame 8 upwards to enter the corresponding isolation groove 82, and the nut 5 on the other end of each stud 4 is respectively positioned in the corresponding isolation groove 82.

In this embodiment, the upper casing 1 and the lower casing 3 are made of metal, and the top surface of the upper casing 1 is provided with a plurality of first heat dissipation fins 12, and the plurality of first heat dissipation fins 12 are distributed at intervals and are parallel to each other; the bottom surface of the lower shell 3 is provided with a plurality of second heat dissipation fins 32, and the plurality of second heat dissipation fins 32 are distributed at intervals and are parallel to each other. The rotation stopping bush 7 and the first positioning plate 71 thereof, the waterproof rubber mat 6 and the second positioning plate 61 thereof are made of insulating materials. So, the heat that makes the component work on the PCB board 2 produce can distribute away through metal material's epitheca 1, inferior valve 3 fast, simultaneously, utilizes splines bush 7 and its first locating plate 71 to keep apart stud 4 and inferior valve 3, utilizes waterproof cushion 6 and second locating plate 61 to keep apart stud 4 and epitheca 1.

In this embodiment, the number of the studs 4 is specifically three, two studs are respectively used for power supply positive input and power supply positive output, and the other stud is used as a common ground terminal for power supply positive input and voltage positive output. The three studs 4 are respectively in electrical contact with a copper foil area for power supply positive input, a copper foil area for power supply positive output and a copper foil area for grounding on the PCB 2 through the bosses 41.

When the DCDC voltage converter of the utility model is assembled, the first positioning plate 71 is embedded into the positioning groove 31 of the lower shell 3, and then the bosses 41 of the studs 4 are respectively sleeved into the corresponding rotation stopping bushes 7; then, respectively sleeving the waterproof rubber mats 6 upwards into corresponding through holes 11 of the upper shell 1, respectively penetrating the other ends of the studs 4 upwards through the PCB 2, the waterproof rubber mats 6 and the isolation frame 8 in sequence, and screwing the nuts 5; finally, the upper case 1 and the lower case 3 are locked with screws.

The utility model discloses a DCDC voltage converter, its adoption the structure of splining replaces exerted fixed bolster to fix each double-screw bolt 4, adopts waterproof cushion 6 to replace the casting glue to seal the clearance between double-screw bolt 4 and epitheca 1, can bare-handed assembly, and the assembly is simple, swift, and can not influence the wholeness and the aesthetic property of product. The isolation frame 8 can isolate the studs 4 from each other, so that mutual interference of the wire harnesses connected to the studs 4 is avoided, short circuit is prevented, the wire harnesses are limited, the wire harnesses are prevented from swinging due to vibration in the using process, and looseness caused by long-term swinging of the wire harnesses is avoided.

The above embodiments are only used to further illustrate the DCDC voltage converter of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification of the above embodiments by the technical entity of the present invention all fall into the protection scope of the technical solution of the present invention.

Claims

The DCDC voltage converter comprises an upper shell, a PCB (printed Circuit Board), a lower shell and a plurality of studs for leading in and leading out a power supply, wherein the upper shell and the lower shell are connected up and down, and the PCB is arranged in a cavity enclosed by the upper shell and the lower shell; the method is characterized in that: one end of each stud is matched with the lower shell respectively to form a rotation stopping structure, the other end of each stud penetrates through the PCB and the upper shell respectively and is in threaded connection with a nut, each stud is in electrical contact with the PCB respectively, and a waterproof rubber pad is matched between each stud and the upper shell respectively.
2. The DCDC voltage converter of claim 1, wherein: the rotation stopping structure comprises a non-circular rotation stopping bushing and a non-circular boss arranged at one end of the stud, and the rotation stopping bushing is positioned on the lower shell and is sleeved with the boss of the stud.
3. The DCDC voltage converter of claim 2, wherein: the number of the rotation stopping bushings is a plurality, and the rotation stopping bushings correspond to the studs one by one; the rotation stopping bushings are arranged on a first positioning plate, and the first positioning plate is positioned on the lower shell; and each stud is electrically contacted with a copper foil area arranged on the periphery of the first through hole for the stud to pass through on the PCB through the boss of each stud.
4. The DCDC voltage converter of claim 3, wherein: the top surface of the lower shell is provided with a positioning groove, and the first positioning plate is embedded into the positioning groove; and/or the rotation stopping bushes and the first positioning plate are integrally formed.
5. The DCDC voltage converter of claim 1, wherein: the number of the waterproof rubber mats is a plurality, and the waterproof rubber mats correspond to the studs one by one; the upper shell is provided with a plurality of second through holes which correspond to the studs one to one, and the waterproof rubber pads are respectively matched between the corresponding studs and the second through holes and are in interference fit with the corresponding studs and the second through holes.
6. The DCDC voltage converter of claim 5, wherein: the waterproof rubber pads are arranged on a second positioning plate, the second positioning plate is positioned on the inner side of the upper shell, and the waterproof rubber pads are respectively sleeved into the through holes one by one.
7. The DCDC voltage converter of claim 6, wherein: the waterproof rubber pads and the second positioning plate are integrally formed.
8. The DCDC voltage converter of claim 1, wherein: the isolation frame is fixed outside the upper shell and provided with a plurality of isolation grooves in one-to-one correspondence with the studs, the other ends of the studs respectively penetrate through the isolation frame upwards to enter the corresponding isolation grooves, and nuts on the other ends of the studs are respectively positioned in the corresponding isolation grooves.
9. The DCDC voltage converter of claim 8, wherein: the isolation frame is provided with a plurality of mounting lugs, and each mounting lug is locked with the upper shell by a screw respectively.
10. The DCDC voltage converter of claim 2, wherein: the upper shell and the lower shell are made of metal materials, and the rotation stopping lining and the waterproof rubber mat are made of insulating materials.