CN211267468U

CN211267468U - Insulating skeleton and power module

Info

Publication number: CN211267468U
Application number: CN202020050731.8U
Authority: CN
Inventors: 刘朝阳; 廖剑飞; 徐礼; 王颖曜
Original assignee: Changsha Guangyi Converting Technique Co ltd
Current assignee: Changsha Guangyi Converting Technique Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-08-14
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses an insulating framework, which comprises two end face fixing plates, more than one middle fixing plate and a plurality of fixing beams; a plurality of mortise holes are formed in each end face fixing plate and each middle fixing plate, and after the fixing beams penetrate through the mortise holes of the middle fixing plates, the two ends of each fixing beam are inserted into the mortise holes of the two end face fixing plates as tenons; fastening components are arranged between each end face fixing plate and the fixing beam as well as between each middle fixing plate and the fixing beam; and each fixed beam is provided with a mounting assembly for mounting a PCB. The utility model also discloses a power module, including the PCB board with as above insulating skeleton, the PCB board install in on the fixed beam. The utility model discloses an insulating skeleton and power module all have simple structure, intensity height and advantage such as reliable and stable.

Description

Insulating skeleton and power module

Technical Field

The utility model relates to a mainly relate to the power supply technology field, refer in particular to an insulating skeleton and power module.

Background

Currently, power supply products are following the trend of compactness and miniaturization, and the goal of reducing the size and volume of the products is mainly achieved by optimizing the module design of the products. Because the circle of the same area saves more space than the rectangle, so the shell and the module of the product are made into the circle to achieve the purpose of reducing the external dimension of the product, but the use of the circular PCB board in the electric product has the following disadvantages:

1) inconvenient support point that sets up in structural design: the components on the circuit board are usually in a rectangular block shape, and the components can occupy relatively space when being arranged on the circular PCB, so that the PCB is compact in design and layout, complex, less in middle margin and limited in position for arranging structural support points;

2) under the condition of compact layout of a PCB device, the PCB device is supported by a metal hexagonal stud, so that the requirement on electrical insulating property is difficult to meet; the support is realized by adopting the hexagonal stud, the hexagonal stud is made of metal materials due to the consideration of strength factors, and the hexagonal stud has larger cross section size and occupies space; meanwhile, the surface of the metal hexagonal stud needs to be covered with an insulating layer to improve the insulating property, but the defect of insufficient electrical insulating property is also caused when the metal hexagonal stud is used in a round PCB with a compact structure.

3) Finally, in the power module of the multi-level circular PCB, if the height of devices arranged on the PCB is high, the distance between levels is correspondingly increased to meet the requirement of electrical clearance, and the conventional support structure has the disadvantages of long span and small stressed cross section, which results in insufficient rigidity, weak structural strength and stability, and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in: to the technical problem that prior art exists, the utility model provides a simple structure, bulk strength height and reliable and stable insulating skeleton and power module.

In order to solve the technical problem, the utility model provides a technical scheme does:

an insulation framework comprises two end face fixing plates, more than one middle fixing plate and a plurality of fixing beams; a plurality of mortise holes are formed in each end face fixing plate and each middle fixing plate, and after the fixing beams penetrate through the mortise holes of the middle fixing plates, the two ends of each fixing beam are inserted into the mortise holes of the two end face fixing plates as tenons; fastening components are arranged between each end face fixing plate and the fixing beam as well as between each middle fixing plate and the fixing beam; and each fixed beam is provided with a mounting assembly for mounting a PCB.

As a further improvement of the above technical solution:

the mounting assembly comprises an insulating support plate, the insulating support plate is tightly attached to the back surface of the PCB, and the insulating support plate is mounted between the two end face fixing plates at intervals and is arranged in parallel with the end face fixing plates; and a connecting assembly is arranged between the insulating support plate and the fixed beam.

Open slots are formed in the peripheral sides of the insulating support plates, and the fixed beams are clamped in the open slots.

The connecting assembly comprises a first folded edge and a second folded edge, the first folded edge and the second folded edge are arranged perpendicularly to each other, and the first folded edge is attached to the outer side of the fixed beam and provided with a mounting hole for being mounted on the fixed beam in a matched mode with a fastener; the second flange is provided with a groove for being clamped on the fixed beam, and mounting holes are formed in the two sides of the groove for being matched with fasteners to mount the insulating support plate.

The fastening assembly between the middle fixing plate and the fixing beam comprises a first fastening piece, the first fastening piece comprises a first fastening plate and a second fastening plate which are bent to form mutually perpendicular, a mounting hole is formed in the first fastening plate and used for being mounted on the fixing beam in a matched mode with the fastening piece, and a nut is riveted on the second fastening plate and used for being mounted on the middle fixing plate in a matched mode with the fastening piece.

The mortise on each end face fixing plate and the mortise on the middle fixing plate are rectangular grooves, U-shaped grooves, C-shaped grooves or oval grooves, and the cross section of each fixing beam is in a shape matched with the mortise.

The mortise on each middle fixing plate forms an opening at the outer side.

The end face fixing plate and the middle fixing plate are circular in shape, and the fixing beams are uniformly arranged along the circumferential direction of the end face fixing plate and the middle fixing plate.

The utility model also discloses a power module, including the PCB board with as above insulating skeleton, the PCB board install in on the fixed beam.

As a further improvement of the above technical solution:

the PCB board pass through insulating backup pad install in on the fixed beam, insulating backup pad install in the back of PCB board, be provided with the support boss in the insulating backup pad for support the PCB board, it has the nut to inlay in the boss to support, be used for cooperateing with the fastener and fix the PCB board in the insulating backup pad.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses an insulating skeleton and power module through the cooperation between fixed beam and the mortise, forms the mortise and tenon structure, can inject the fixed beam and remove at different degrees of freedom (except axial direction), and the fixed beam of rethread fastening components restriction is at the ascending removal of axial direction to realize the injecing of fixed beam on each degree of freedom, overall structure is simple, intensity is high and reliable and stable.

The utility model discloses an insulating skeleton and power module sets up the insulating backup pad, can realize the electrical isolation effect between each layer PCB board, effectively increases creepage distance and insulating nature, reduces the interval between each layer PCB board; the insulating support plate is tightly attached and installed with the PCB, the structural strength of the PCB can be effectively improved, supporting points are conveniently arranged at the positions of the layout gaps of the PCB, and meanwhile, the insulating support plate is conveniently connected with the whole structure of the PCB and the fixed beam, so that the compactness and the structural strength of the whole structure are further improved.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the present invention in a front view according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the mounting assembly according to the present invention.

Fig. 4 is a schematic structural view of an end fixing plate according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of an intermediate fixing plate according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a first connecting member according to an embodiment of the present invention.

Fig. 7 is a schematic structural view of a second connecting member according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of the first fastening plate according to the embodiment of the present invention.

Fig. 9 is a schematic structural view of a second fastening plate according to an embodiment of the present invention.

The reference numbers in the figures denote: 1. an end face fixing plate; 2. a middle fixing plate; 3. b, mortise drilling; 4. a fixed beam; 5. mounting the component; 501. an insulating support plate; 5011. supporting the boss; 5012. an open slot; 502. a connecting assembly; 5021. a first connecting member; 5022. a second connecting member; 6. a fastening assembly; 601. a first fastener; 602. a second fastener; 7. and (7) a PCB board.

Detailed Description

The invention is further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 and 2, the insulating framework of the present embodiment includes two end fixing plates 1, more than one middle fixing plate 2, and a plurality of fixing beams 4; a plurality of mortise holes 3 are formed in each end face fixing plate 1 and the middle fixing plate 2, and after the plurality of fixing beams 4 penetrate through the mortise holes 3 of the middle fixing plate 2, two ends of each fixing beam are inserted into the mortise holes 3 of the two end face fixing plates 1 as tenons; fastening assemblies 6 are arranged between each end face fixing plate 1 and the middle fixing plate 2 and the fixing beam 4 and are used for fixing the end face fixing plates 1 and the middle fixing plates 2 and the fixing beam 4; the fixing beam 4 is provided with a mounting assembly 5 for mounting the PCB 7, and the PCB 7 is tightly mounted on the fixing beam 4. The utility model discloses an insulating skeleton is applied to power module, through the cooperation between fixed beam 4 and the mortise 3, forms mortise and tenon structure, can inject fixed beam 4 and remove at different degrees of freedom (except axial direction), and rethread fastening component 6 restricts fixed beam 4 and removes on the axial direction to realize fixed beam 4 injects on each degree of freedom, overall structure is simple, intensity is high and reliable and stable.

In the embodiment, the cross section of the fixed beam 4 is rectangular, the mortise 3 on each end face fixed plate 1 and the middle fixed plate 2 is a rectangular groove, and the structure is simple and easy to realize. Of course, in other embodiments, the mortise 3 may also be a U-shaped groove, a C-shaped groove, an oval-shaped groove, or other special-shaped grooves, and the cross section of the fixing beam 4 is in a shape matching the mortise 3. In a preferred scheme, the mortise 3 on each intermediate fixing plate 2 forms an opening at the outer side, as shown in the right mortise 3 in fig. 4, so that the fixing beam 4 can be conveniently disassembled and assembled. For example, after the end fixing plate 1 is detached, the corresponding fixing beam 4 can be directly detached from the opening on one side without detaching the PCB boards 7 of each layer.

In the embodiment, the end surface fixing plate 1 and the middle fixing plate 2 are both circular and matched with the circular PCB 7; the quantity of fixed beam 4 is four, and four fixed beam 4 evenly arrange along the circumferential direction of end fixed plate 1 and middle fixed plate 2, and the quantity of middle fixed plate 2 is two in addition, and even interval distribution is between two end fixed plate 1. Of course, in other embodiments, the end fixing plates 1 and the intermediate fixing plates 2 may also be rectangular, the number of the fixing beams 4 may also be two, three, five or more, the number of the intermediate fixing plates 2 may be one, three or more, and the number of the fixing beams 4 and the intermediate fixing plates 2 may be selected according to actual situations. In addition, the end face fixing plate 1, the middle fixing plate 2 and the fixing beam 4 are made of insulating materials, so that the insulation degree of the whole structure is improved, and the high electrical insulation requirement is met.

In this embodiment, the mounting assembly 5 includes a plurality of insulating support plates 501, each insulating support plate 501 is fastened and attached to the back of each PCB 7, and each insulating support plate 501 is uniformly installed between two end surface fixing plates 1 at intervals and arranged parallel to the end surface fixing plates 1; rectangular open slots 5012 are formed in the periphery of the PCB 7 and the insulation supporting plate 501 and located at the position of the fixed beam 4, so that the fixed beam 4 can be clamped conveniently. A fixing hole is arranged in the middle of each PCB 7, a supporting boss 5011 is designed at the corresponding position of the insulating supporting plate 501 and used for supporting the PCB 7, nuts are embedded in the supporting boss, and the PCB 7 is fastened on the insulating supporting plate 501 through screws. Wherein the thickness requirement of the insulating support plate 501 is larger than that of the PCB board 7; for the PCB 7 with devices on the reverse side, clearance grooves and holes can be designed at the corresponding positions of the insulating support plate 501. The arrangement of the insulating support plate 501 can realize the electrical isolation function among the PCB boards 7 of each layer, effectively increase the creepage distance and the insulativity and reduce the distance among the PCB boards 7 of each layer; insulating backup pad 501 and the laminating fastening installation of PCB board 7 can effectively improve PCB board 7's structural strength, also be convenient for set up the strong point in the place in PCB board 7 overall arrangement space, also be convenient for simultaneously insulating backup pad 501 and PCB board 7 overall structure and fixed beam 4 between be connected to overall structure's compactedness and structural strength have further been improved.

Further, a connecting assembly 502 is arranged between the insulating support plate 501 and the fixed beam 4, as shown in fig. 6, wherein the connecting assembly 502 includes a first connecting piece 5021, the first connecting piece 5021 includes a first folded edge and a second folded edge, the first folded edge and the second folded edge are arranged perpendicularly to each other to form an L shape, the first folded edge is attached to the outer side of the fixed beam 4 and is provided with a mounting hole for being mounted on the fixed beam 4 in a matching manner with a fastener (such as a screw, etc.); the second flange is provided with the recess, be used for the card to establish on fixed beam 4, the second hem is provided with the mounting hole in the both sides of recess, be used for with fastener (like screw and screw etc.) cooperation installation insulation support plate 501, wherein the second flange is located between PCB board 7 and insulation support plate 501, can play certain effect of supporting and bed hedgehopping, the thickness requirement of supporting boss 5011 simultaneously is unanimous with the thickness of second hem, be favorable to strengthening the rigidity of PCB board 7 and the electrical insulation nature between the upper and lower layer PCB board 7 and guarantee the planarization of PCB board 7 holding surface. Wherein the mounting hole of the first connector 5021 corresponding to the PCB 7 needs to be insulated. The connecting assembly 502 is simple in structure and easy to assemble and disassemble.

In addition, as shown in fig. 7, the connection assembly 502 may also be specifically a second connection piece 5022, which also includes a first folded edge and a second folded edge, the first folded edge and the second folded edge are arranged perpendicularly to each other to form an L shape, the first folded edge is attached to the upper side or the lower side of the fixed beam 4 and is provided with a mounting hole for being mounted on the fixed beam 4 in a matching manner with a fastener (such as a screw, etc.); the second flange is provided with a mounting hole for installing between the insulating support plate 501 and the PCB 7 with a fastener (such as a screw, etc.) in a matching manner, and the second flange can also play a certain supporting and heightening role and can also serve as a copper bar at the same time for conducting electricity, and of course, the corresponding mounting hole on the PCB 7 needs to be metallized.

As shown in fig. 8, in the present embodiment, the fastening assembly 6 between the middle fixing plate 2 and the fixing beam 4 includes a first fastening member 601, the structure of the first fastening member 601 is similar to that of the first connecting member 5021, and also includes a first fastening plate and a second fastening plate bent to be perpendicular to each other, the first fastening plate is provided with a mounting hole for being mounted on the fixing beam 4 in cooperation with a fastening member (such as a screw, etc.), the second fastening plate is provided with a groove for being snapped on the fixing beam 4, and the second fastening plate is riveted with nuts at two sides of the groove for being mounted on the middle fixing plate 2 in cooperation with a fastening member (such as a screw, etc.). As shown in fig. 9, the fastening assembly 6 between the end fixing plate 1 and the fixing beam 4 includes a second fastening member 602, which has a structure similar to that of the first fastening member 601 and also includes a first fastening plate and a second fastening plate bent to be perpendicular to each other, the first fastening plate is provided with a mounting hole for being mounted on the fixing beam 4 in cooperation with a fastening member (such as a screw, a screw bolt, etc.), and the second fastening plate is riveted with a nut for being mounted on the end fixing plate 1 in cooperation with the fastening member. The fastening assembly 6 is simple in structure and convenient to disassemble and assemble.

The utility model discloses still correspondingly disclose a power module, including PCB board 7 and as above insulating skeleton, wherein PCB board 7 is installed on fixed beam 4. Specifically, the PCB 7 is mounted on the fixing beam 4 through the insulating support plate 501, the insulating support plate 501 is mounted on the back surface of the PCB 7, a support boss 5011 is disposed on the insulating support plate 501 for supporting the PCB 7, and a nut is embedded in the support boss 5011 for cooperating with a fastener (such as a screw or a bolt) to fix the PCB 7 on the insulating support plate 501. The utility model discloses a power module has insulating skeleton as above equally the advantage, simple structure and intensity are high moreover.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.

Claims

1. An insulating framework is characterized by comprising two end face fixing plates (1), more than one middle fixing plate (2) and a plurality of fixing beams (4); a plurality of mortise holes (3) are formed in each end face fixing plate (1) and the middle fixing plate (2), and after a plurality of fixing beams (4) penetrate through the mortise holes (3) of the middle fixing plate (2), two ends of each fixing beam are inserted into the mortise holes (3) of the two end face fixing plates (1) as tenons; fastening assemblies (6) are arranged between each end face fixing plate (1) and the middle fixing plate (2) and the fixing beam (4); and each fixed beam (4) is provided with a mounting assembly (5) for mounting a PCB (7).

2. The insulating framework of claim 1, wherein the mounting assembly (5) comprises an insulating support plate (501), the insulating support plate (501) is tightly attached to the back surface of the PCB (7), and the insulating support plate (501) is mounted between the two end fixing plates (1) at intervals and arranged in parallel with the end fixing plates (1); and a connecting component (502) is arranged between the insulating supporting plate (501) and the fixed beam (4).

3. The insulating framework of claim 2, characterized in that the periphery of the insulating support plate (501) is provided with an open slot (5012), and the fixed beam (4) is clamped in the open slot (5012).

4. The insulating skeleton according to claim 3, characterized in that the connecting assembly (502) comprises a first flange and a second flange, the first flange and the second flange are arranged perpendicular to each other, the first flange is attached to the outer side of the fixed beam (4) and is provided with a mounting hole for being mounted on the fixed beam (4) in a matching manner with a fastener; the second flange is provided with a groove for clamping the fixing beam (4), and mounting holes are formed in the two sides of the groove for matching with fasteners to mount the insulating support plate (501).

5. An insulating skeleton according to any one of claims 1-4, characterized in that the fastening assembly (6) between the middle fixing plate (2) and the fixing beam (4) comprises a first fastening member (601), the first fastening member (601) comprises a first fastening plate and a second fastening plate which are bent to be perpendicular to each other, the first fastening plate is provided with a mounting hole for being mounted on the fixing beam (4) in a matching way with the fastening member, and the second fastening plate is riveted with a nut for being mounted on the middle fixing plate (2) in a matching way with the fastening member.

6. The insulating framework according to any one of claims 1 to 4, characterized in that the mortise (3) on each end fixing plate (1) and intermediate fixing plate (2) is a rectangular groove, a U-shaped groove, a C-shaped groove or an oval groove, and the cross section of the fixing beam (4) is in a shape matching the mortise (3).

7. An insulating skeleton according to claim 6, characterized in that the mortise hole (3) on each intermediate fixing plate (2) is open on the outside.

8. An insulating framework according to any one of claims 1-4, characterized in that the end fixing plates (1) and the intermediate fixing plates (2) are circular in shape, and the fixing beams (4) are uniformly arranged in the circumferential direction of the end fixing plates (1) and the intermediate fixing plates (2).

9. A power supply module, characterized in that it comprises a PCB board (7) and an insulating skeleton according to any one of claims 1-8, said PCB board (7) being mounted on said fixed beam (4).

10. The power supply module according to claim 9, wherein the PCB (7) is mounted on the fixing beam (4) through an insulating support plate (501), the insulating support plate (501) is mounted on the back surface of the PCB (7), a support boss (5011) is provided on the insulating support plate (501) for supporting the PCB (7), and a nut is embedded in the support boss (5011) for cooperating with a fastener to fix the PCB (7) on the insulating support plate (501).